技术领域Technical Field
本公开涉及无线充电技术领域，尤其涉及一种无线充电方法、装置、终端及存储介质。The present disclosure relates to the technical field of wireless charging, and in particular to a wireless charging method, device, terminal and storage medium.
背景技术Background technique
随着无线充电技术厂商和线圈厂商的努力，越来越多的智能设备，包括很多可穿戴设备和移动智能终端开始应用无线充电技术。就市场而言，无线充电联盟(wirelesspower consortium，WPC)已经得到了很广泛的应用。With the efforts of wireless charging technology manufacturers and coil manufacturers, more and more smart devices, including many wearable devices and mobile smart terminals, are beginning to use wireless charging technology. In terms of the market, the Wireless Power Consortium (WPC) has been widely used.
在智能设备进行无线充电时，智能设备也支持无线反充技术；例如，使用手机进行无线充电，而该手机也可以其它智能设备比如手表、耳机等进行无线充电。当进行反充时，如果发射端与接收端之间存在金属异物等，则存在较大的安全隐患。When a smart device is wirelessly charged, it also supports wireless reverse charging technology; for example, when a mobile phone is wirelessly charged, the mobile phone can also be wirelessly charged by other smart devices such as watches and headphones. When reverse charging is performed, if there is metal foreign matter between the transmitter and the receiver, there is a great safety hazard.
发明内容Summary of the invention
本公开提供一种充电方法、装置、终端及存储介质。The present disclosure provides a charging method, a device, a terminal and a storage medium.
根据本公开实施例的第一方面，提供一种无线充电装置，应用于第一终端，所述无线充电装置，包括：充电电路及品质因子Q值检测模组；其中，According to a first aspect of an embodiment of the present disclosure, a wireless charging device is provided, which is applied to a first terminal. The wireless charging device includes: a charging circuit and a quality factor Q value detection module; wherein:
所述充电电路包括：线圈；The charging circuit comprises: a coil;
所述Q值检测模组，与所述线圈连接，用于在所述充电电路发射无线信号时，通过检测所述线圈上的放电参数确定出Q值。The Q value detection module is connected to the coil and is used to determine the Q value by detecting the discharge parameters on the coil when the charging circuit transmits a wireless signal.
上述方案中，所述Q值检测模组，包括：In the above solution, the Q value detection module includes:
检测电路，与所述线圈连接，用于检测所述线圈发射无线信号时的放电参数；A detection circuit, connected to the coil, for detecting discharge parameters when the coil transmits a wireless signal;
转换电路，与所述检测电路的输出端连接，用于根据所述放电参数确定出所述Q值。A conversion circuit is connected to the output end of the detection circuit and is used to determine the Q value according to the discharge parameter.
上述方案中，在一些实施例中，所述检测电路，包括：In the above scheme, in some embodiments, the detection circuit includes:
至少一个开关管；其中，所述开关管与所述线圈连接；At least one switch tube; wherein the switch tube is connected to the coil;
所述控制模组，还与所述开关管连接，用于向所述开关管发送第一控制信号，以控制所述开关管导通，或者，向所述开关管发送第二控制信号，以控制所述开关管关断；The control module is also connected to the switch tube, and is used to send a first control signal to the switch tube to control the switch tube to be turned on, or send a second control signal to the switch tube to control the switch tube to be turned off;
所述Q值检测模组，用于在进入到所述工作状态后，当所述开关管关断时，检测所述线圈发射所述无线信号的所述放电参数，并确定出所述Q值；或者，当所述开关管处于导通时，停止检测所述线圈的所述放电参数。The Q value detection module is used to detect the discharge parameters of the wireless signal transmitted by the coil and determine the Q value when the switch tube is turned off after entering the working state; or, when the switch tube is turned on, stop detecting the discharge parameters of the coil.
上述方案中，所述无线充电装置，还包括：In the above solution, the wireless charging device further includes:
控制模组，与所述Q值检测模组连接，用于发送使能所述Q值检测模组的使能信号；A control module, connected to the Q value detection module, used to send an enable signal to enable the Q value detection module;
所述Q值检测模组，用于在所述使能信号的使能下进入到检测所述Q值的工作状态。The Q value detection module is used to enter a working state of detecting the Q value when enabled by the enable signal.
上述方案中，所述检测电路，用于在所述充电电路发射第一脉冲信号时，通过检测所述线圈上的放电参数确定出第一Q值；In the above solution, the detection circuit is used to determine the first Q value by detecting the discharge parameters on the coil when the charging circuit transmits the first pulse signal;
所述控制模组，与所述转换电路的输出端连接，用于基于所述第一Q值与预定的阈值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物。The control module is connected to the output end of the conversion circuit, and is used to determine whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal based on the first Q value and a predetermined threshold.
上述方案中，所述检测电路，用于在所述充电电路发射所述第二脉冲信号时，通过检测所述线圈上的放电参数确定第二Q值；In the above solution, the detection circuit is used to determine the second Q value by detecting the discharge parameters on the coil when the charging circuit transmits the second pulse signal;
所述装置，还包括：The device further comprises:
通信模组，用于接收第二终端基于所述第二脉冲信号返回的参考Q值；A communication module, configured to receive a reference Q value returned by the second terminal based on the second pulse signal;
所述控制模组，与所述通信模组连接，用于基于所述第二Q值及所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。The control module is connected to the communication module, and is used to determine whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal based on the second Q value and the reference Q value.
根据本公开实施的第二方面，提供一种无线充电处理方法，应用于第一终端，所述第一终端包括充电电路及品质因子Q值检测模组，所述充电电路包括：线圈；所述方法包括：According to a second aspect of the present disclosure, a wireless charging processing method is provided, which is applied to a first terminal, wherein the first terminal includes a charging circuit and a quality factor Q value detection module, wherein the charging circuit includes: a coil; the method includes:
获取所述Q值检测模组在所述充电电路发送无线信号时检测所述线圈上的放电参数得到的Q值；Acquire a Q value obtained by the Q value detection module detecting a discharge parameter on the coil when the charging circuit sends a wireless signal;
根据所述Q值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物。According to the Q value, it is determined whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal.
上述方案中，所述方法还包括：In the above solution, the method further comprises:
生成使能Q值检测模组的使能信号；其中，所述使能信号，用于触发所述Q值检测模组进入检测Q值的工作状态。Generate an enable signal for enabling the Q value detection module; wherein the enable signal is used to trigger the Q value detection module to enter a working state of detecting the Q value.
上述方案中，所述获取所述Q值检测模组在所述充电电路发送无线信号时检测所述线圈上的放电参数得到的Q值，包括：In the above solution, the Q value detection module obtains the Q value by detecting the discharge parameter on the coil when the charging circuit sends the wireless signal, including:
采集所述线圈在第一时刻的第一电压及在第二时刻的第二电压；Collecting a first voltage of the coil at a first moment and a second voltage of the coil at a second moment;
基于所述第一电压、所述第二电压及所述第二时刻与所述第一时刻之间的时间间隔，获得所述线圈的电感与所述线圈上电阻的阻抗比值；Obtaining an impedance ratio of the inductance of the coil to the resistance on the coil based on the first voltage, the second voltage, and a time interval between the second moment and the first moment;
基于所述阻抗比值及所述线圈的工作频率，获得所述Q值。The Q value is obtained based on the impedance ratio and the operating frequency of the coil.
上述方案中，所述获取所述Q值检测模组在所述充电电路发送无线信号时检测所述线圈上的放电参数得到的Q值，包括：In the above solution, the Q value detection module obtains the Q value by detecting the discharge parameter on the coil when the charging circuit sends the wireless signal, including:
获取所述Q值检测模组在所述充电电路发送第一脉冲信号时，检测所述线圈上的放电参数得到的第一Q值；Acquire a first Q value obtained by the Q value detection module by detecting a discharge parameter on the coil when the charging circuit sends a first pulse signal;
所述根据所述Q值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物，包括：The determining, according to the Q value, whether there is a foreign object interfering with wireless charging within a predetermined range of the first terminal includes:
基于所述第一Q值与预定的阈值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物。Based on the first Q value and a predetermined threshold, it is determined whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal.
上述方案中，所述基于所述第一Q值与预定的阈值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物，包括：In the above solution, determining whether there is a foreign object interfering with wireless charging within a predetermined range of the first terminal based on the first Q value and a predetermined threshold value includes:
若所述第一Q值小于或等于所述阈值，确定所述第一终端的预定范围内存在干扰无线充电的异物；If the first Q value is less than or equal to the threshold, it is determined that there is a foreign object interfering with wireless charging within a predetermined range of the first terminal;
或者，or,
若所述第一Q值大于所述阈值，确定所述第一终端的预定范围内不存在干扰无线充电的异物。If the first Q value is greater than the threshold, it is determined that there is no foreign object interfering with wireless charging within a predetermined range of the first terminal.
上述方案中，所述方法还包括：In the above solution, the method further comprises:
响应于所述第一终端的预定范围内不存在干扰无线充电的异物，控制所述充电电路发射第二脉冲信号；In response to the absence of foreign objects interfering with wireless charging within a predetermined range of the first terminal, controlling the charging circuit to transmit a second pulse signal;
其中，所述第二脉冲信号用于唤醒所述第二终端，所述第二脉冲信号的周期大于所述第一脉冲信号的周期。The second pulse signal is used to wake up the second terminal, and a period of the second pulse signal is greater than a period of the first pulse signal.
上述方案中，所述获取所述Q值检测模组在所述充电电路发送无线信号时检测所述线圈上的放电参数得到的Q值，包括：In the above solution, the Q value detection module obtains the Q value by detecting the discharge parameter on the coil when the charging circuit sends the wireless signal, including:
获取所述Q值检测模组在所述充电电路发送第二脉冲信号时，检测所述线圈上的放电参数得到的第二Q值；Acquire a second Q value obtained by the Q value detection module by detecting a discharge parameter on the coil when the charging circuit sends a second pulse signal;
所述方法还包括：The method further comprises:
接收所述第二终端基于所述第二脉冲信号返回的参考Q值；receiving a reference Q value returned by the second terminal based on the second pulse signal;
基于所述第二Q值与所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。Based on the second Q value and the reference Q value, it is determined whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal.
上述方案中，所述基于所述第二Q值与所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物，包括：In the above solution, determining whether there is a foreign object interfering with wireless charging between the first terminal and the second terminal based on the second Q value and the reference Q value includes:
若所述第二Q值大于或等于预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间不存在干扰无线充电的异物；If the second Q value is greater than or equal to the reference Q value of a predetermined multiple, it is determined that there is no foreign object interfering with wireless charging between the first terminal and the second terminal;
或者，or,
若所述第二Q值小于所述预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间存在干扰无线充电的异物。If the second Q value is less than the reference Q value of the predetermined multiple, it is determined that there is a foreign object interfering with wireless charging between the first terminal and the second terminal.
上述方案中，所述方法还包括：In the above solution, the method further comprises:
生成去使能信号；其中，所述去使能信号，用于触发所述Q值检测模组退出检测Q值的工作状态。Generate a disable signal; wherein, the disable signal is used to trigger the Q value detection module to exit the working state of detecting the Q value.
上述方案中，所述方法还包括：In the above solution, the method further comprises:
若在预定时间内未接收到所述第二终端发送的参考Q值，获取所述第一终端的发送功率及所述第二终端的接收功率；If the reference Q value sent by the second terminal is not received within a predetermined time, obtaining the transmit power of the first terminal and the receive power of the second terminal;
基于所述发送功率及所述接收功率的差值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。Based on the difference between the transmission power and the reception power, it is determined whether there is a foreign object interfering with wireless charging between the first terminal and the second terminal.
根据本公开实施例的第三方面，提供一种终端，包括：According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:
处理器；processor;
用于存储处理器可执行指令的存储器；a memory for storing processor-executable instructions;
其中，所述处理器被配置为：用于执行所述可执行指令时，实现本公开任意实施例所述的无线充电处理方法。Wherein, the processor is configured to: implement the wireless charging processing method described in any embodiment of the present disclosure when executing the executable instructions.
根据本公开实施例的第四方面，提供一种计算机可读存储介质，所述可读存储介质存储有可执行程序，其中，所述可执行程序被处理器执行时实现本公开任意实施例的所述的无线充电处理方法。According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores an executable program, wherein when the executable program is executed by a processor, the wireless charging processing method of any embodiment of the present disclosure is implemented.
本公开的实施例提供的技术方案可以包括以下有益效果：The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:
在本公开实施例中，提供一种无线充电装置，所述无线充电装置包括：充电电路及品质因子Q值检测模组；其中，所述充电电路包括：线圈；所述Q值检测模组，与所述线圈连接，用于在所述充电电路发射无线信号时，通过检测所述线圈上的放电参数确定出Q值。如此，由于本公开实施例的Q值检测是通过与线圈连接的Q值检测模组，直接检测线圈上的充电参数而确定出Q值，无需考虑无线充电装置上不同线圈的感抗或者其他物体的阻抗等，从而能够准确检测出Q值。且，由于提高了检测Q值的准确性，也能够提高异物检测的准确性，如大大降低由于Q值检测不准确而导致实际存在异物但没有检测出存在异物的情况发生，从而提高了无线充电的安全性。In an embodiment of the present disclosure, a wireless charging device is provided, the wireless charging device comprising: a charging circuit and a quality factor Q value detection module; wherein the charging circuit comprises: a coil; the Q value detection module is connected to the coil, and is used to determine the Q value by detecting the discharge parameters on the coil when the charging circuit transmits a wireless signal. In this way, since the Q value detection of the embodiment of the present disclosure is to determine the Q value by directly detecting the charging parameters on the coil through the Q value detection module connected to the coil, there is no need to consider the inductive reactance of different coils on the wireless charging device or the impedance of other objects, etc., so that the Q value can be accurately detected. Moreover, since the accuracy of detecting the Q value is improved, the accuracy of foreign object detection can also be improved, such as greatly reducing the situation where the actual presence of foreign objects is not detected due to inaccurate Q value detection, thereby improving the safety of wireless charging.
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
图1是一种基于功率损耗检测异物的示意图。FIG. 1 is a schematic diagram of detecting foreign objects based on power loss.
图2是根据一示例性实施例示出的一种无线充电装置的示例图。Fig. 2 is an exemplary diagram showing a wireless charging device according to an exemplary embodiment.
图3是根据一示例性实施例示出的一种无线充电装置的框图。Fig. 3 is a block diagram showing a wireless charging device according to an exemplary embodiment.
图4是根据一示例性实施例示出的一种无线充电装置的框图。Fig. 4 is a block diagram showing a wireless charging device according to an exemplary embodiment.
图5是根据一示例性实施例示出的一种放电参数波形的示例图。Fig. 5 is an exemplary diagram showing a discharge parameter waveform according to an exemplary embodiment.
图6是根据一示例性实施例示出的一种无线充电装置的框图。Fig. 6 is a block diagram showing a wireless charging device according to an exemplary embodiment.
图7是根据一示例性实施例示出的一种无线充电方法的流程图。Fig. 7 is a flow chart showing a wireless charging method according to an exemplary embodiment.
图8是根据一示例性实施例示出的一种无线充电方法的流程图。Fig. 8 is a flow chart showing a wireless charging method according to an exemplary embodiment.
图9是根据一示例性实施例示出的一种无线充电方法的流程图。Fig. 9 is a flow chart showing a wireless charging method according to an exemplary embodiment.
图10是根据一示例性实施例示出的一种无线充电方法的流程图。Fig. 10 is a flow chart showing a wireless charging method according to an exemplary embodiment.
图11是根据一示例性实施例示出的一种无线充电方法的流程图。Fig. 11 is a flow chart showing a wireless charging method according to an exemplary embodiment.
图12是根据一种包含无线反向充电的快捷键的用户界面示意图。FIG. 12 is a schematic diagram of a user interface including a shortcut key for wireless reverse charging.
图13是根据一示例性实施例示出的一种包含无线充电装置的终端的流程图。Fig. 13 is a flow chart showing a terminal including a wireless charging device according to an exemplary embodiment.
具体实施方式Detailed ways
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.
如图1所示，公开了基于功率损耗检测异物的方法包括：获取无线充电装置发射端的发送功率PPT，以及无线充电装置接收端的接收功率PPR；基于所述PPT及PPR的差值确定无线充电装置发射端与无线充电装置接收端之间是否存在干扰无线充电的异物。例如，若-500mW<PPT-PPR<0mW，则确定不存在异物；若PPT-PPR≤-500mW，则确定存在异物。As shown in FIG1 , a method for detecting foreign objects based on power loss is disclosed, including: obtaining the transmission power PPT of the transmitter of the wireless charging device and the receiving power PPR of the receiver of the wireless charging device; determining whether there is a foreign object that interferes with wireless charging between the transmitter of the wireless charging device and the receiver of the wireless charging device based on the difference between the PPT and the PPR . For example, if -500mW<PPT -PPR <0mW, it is determined that there is no foreign object; if PPT -PPR ≤-500mW, it is determined that there is a foreign object.
然而，该种基于功率损耗的检测异物的方法，一方面，由于不同接收端的线圈不同、线圈周围环境不同、发送端和接收端线圈耦合不同、发送端与接收端的线圈的位置不同以及负载电流不同等，都会导致对异物检测需要不同的参数，加大了检测的困难；另一方面，由于接收端及发送端存在功率损耗Ploss，例如线圈中存在功率损耗、整流电路存在功率损耗等，发送端的发送功率与接收端的接收功率需要进行补充，从而也会导致对异物的检测的不准确性。However, this method of detecting foreign objects based on power loss, on the one hand, requires different parameters for foreign object detection due to different coils at different receiving ends, different environments around the coils, different couplings between the transmitting and receiving ends, different positions of the coils at the transmitting and receiving ends, and different load currents, which increases the difficulty of detection; on the other hand, due to power loss Ploss at the receiving and transmitting ends, such as power loss in the coils and power loss in the rectifier circuit, the transmitting power of the transmitting end and the receiving power of the receiving end need to be supplemented, which also leads to inaccurate detection of foreign objects.
基于此，本公开实施例提供了一种基于Q值检测模组检测Q值的方法，该方法是直接检测发送端线圈上放电参数，基于放电参数确定Q值，不需要考虑到上述不同接收端的线圈不同以及功率损耗等的原因；从而能够确定出精确的Q值。且基于此确定的Q值，用来确定发送端的预定范围内是否存在异物，或者接收端与发送端之间是否存在异物，能够大大提高确定是否异物的准确性，大大减少是否存在异物的误判。Based on this, the disclosed embodiment provides a method for detecting the Q value based on the Q value detection module. The method directly detects the discharge parameters on the transmitting end coil and determines the Q value based on the discharge parameters. There is no need to consider the above-mentioned differences in the coils of different receiving ends and the power loss, etc.; thus, an accurate Q value can be determined. And based on the determined Q value, it is used to determine whether there is a foreign object within a predetermined range of the transmitting end, or whether there is a foreign object between the receiving end and the transmitting end, which can greatly improve the accuracy of determining whether there is a foreign object and greatly reduce the misjudgment of whether there is a foreign object.
如图2所示，本公开实施例提供一种无线充电装置，所述无线充电装置包括：As shown in FIG. 2 , an embodiment of the present disclosure provides a wireless charging device, the wireless charging device comprising:
充电电路11及品质因子Q值检测模组12；其中，The charging circuit 11 and the quality factor Q value detection module 12; wherein,
所述充电电路包括：线圈111；The charging circuit comprises: a coil 111;
所述Q值检测模组12，与所述线圈111连接，用于在所述充电电路11发射无线信号时，通过检测所述线圈111上的放电参数确定出Q值。The Q value detection module 12 is connected to the coil 111 and is used to determine the Q value by detecting the discharge parameters on the coil 111 when the charging circuit 11 transmits a wireless signal.
本公开实施例所提供的无线充电装置，应用在第一终端中。这里，所述第一终端可以为任意一个可接收射频信号的电子设备；所述第一终端也可以为包含无线充电接收器的终端。所述第一终端包括但不限于：手机、平板电脑或可穿戴式设备等移动终端，还可以为其它能够接收无线充电的固定设备。The wireless charging device provided in the embodiment of the present disclosure is applied in a first terminal. Here, the first terminal can be any electronic device that can receive radio frequency signals; the first terminal can also be a terminal including a wireless charging receiver. The first terminal includes but is not limited to: mobile terminals such as mobile phones, tablet computers or wearable devices, and can also be other fixed devices that can receive wireless charging.
在本公开实施例中，所述无线充电装置可用于正向充电或反向供电；当所述无线充电装置应于正向充电时，所述充电电路发射无线信号，所述无线充电装置为接收端；当所述无线充电装置应于反向供电时，所述充电电路接收无线信号，所述无线充电装置为发送端。这里，所述充电装置接收或发射无线信号，通过线圈发生电磁感应，以接收或发射无线信号。In the disclosed embodiment, the wireless charging device can be used for forward charging or reverse power supply; when the wireless charging device is used for forward charging, the charging circuit transmits a wireless signal, and the wireless charging device is a receiving end; when the wireless charging device is used for reverse power supply, the charging circuit receives a wireless signal, and the wireless charging device is a transmitting end. Here, the charging device receives or transmits a wireless signal, and electromagnetic induction occurs through a coil to receive or transmit a wireless signal.
如此，本公开实施例通过在无线充电装置中设置一个Q值检测模组，可以通过Q值检测模组直接检测线圈的充电参数而确定出Q值，提供了一种Q值检测的方法。In this way, the embodiment of the present disclosure provides a Q value detection module in the wireless charging device, and can directly detect the charging parameters of the coil through the Q value detection module to determine the Q value, thereby providing a Q value detection method.
且，由于本公开实施例的Q值检测是通过与线圈连接的Q值检测模组，直接检测线圈上的充电参数而确定出Q值，无需考虑无线充电装置上不同线圈的感抗或者其他物体的阻抗等，从而能够准确检测出该无线充电装置的Q值。Moreover, since the Q value detection of the embodiment of the present disclosure is carried out by directly detecting the charging parameters on the coil through the Q value detection module connected to the coil, there is no need to consider the inductive reactance of different coils on the wireless charging device or the impedance of other objects, etc., thereby being able to accurately detect the Q value of the wireless charging device.
且，由于提高了检测Q值的准确性，也能够提高异物检测的准确性，如大大降低由于Q值检测不准确而导致实际存在异物但没有检测出存在异物的情况发生，从而提高了无线充电的安全性。Moreover, since the accuracy of detecting the Q value is improved, the accuracy of foreign object detection can also be improved. For example, the situation where the actual presence of foreign objects is not detected due to inaccurate Q value detection is greatly reduced, thereby improving the safety of wireless charging.
在一些实施例中，如图3所示，所述充电电路110包括：谐振子电路110，所述谐振子电路，包括：线圈Ls及谐振电容Cs；所述谐振电容与所述线圈111串联；In some embodiments, as shown in FIG3 , the charging circuit 110 includes: a resonant subcircuit 110 , the resonant subcircuit includes: a coil Ls and a resonant capacitor Cs; the resonant capacitor is connected in series with the coil 111 ;
所述Q值检测模组12，与所述谐振子电路110连接，用于在所述充电电路11发送无线信号时，通过检测所述谐振子电路110的放电参数确定出Q值。The Q value detection module 12 is connected to the resonant subcircuit 110 , and is used to determine the Q value by detecting the discharge parameters of the resonant subcircuit 110 when the charging circuit 11 sends a wireless signal.
这里，所述线圈Ls可认为是上述实施例中的线圈111。Here, the coil Ls may be considered as the coil 111 in the above embodiment.
在实际应用中，若线圈与谐振电容集成在一个芯片中，当Q值检测模组用于检测线圈与谐振电容组成的谐振子电路时，无需再额外增加导线用来连接线圈。In practical applications, if the coil and the resonant capacitor are integrated into one chip, when the Q value detection module is used to detect the resonant subcircuit composed of the coil and the resonant capacitor, there is no need to add additional wires to connect the coil.
如图4所示，在一些实施例中，所述无线充电装置，还包括：As shown in FIG. 4 , in some embodiments, the wireless charging device further includes:
控制模组13，与所述Q值检测模组12连接，用于发送使能所述Q值检测模组12的使能信号；A control module 13, connected to the Q value detection module 12, and configured to send an enable signal for enabling the Q value detection module 12;
所述Q值检测模组12，用于在所述使能信号的使能下进入到检测所述Q值的工作状态。The Q value detection module 12 is used to enter a working state of detecting the Q value when enabled by the enable signal.
这里，所述控制模组可以控制所述Q值检测模组的工作状态，例如，所述控制模组向所述Q值检测模组发送使能信号时，用于控制所述Q值检测模组进入检测所述Q值的工作状态；又如，所述控制模组向所述Q值检测模组发送去使能信号时，用于控制所述Q值检测模组退出检测Q值的检测状态。Here, the control module can control the working state of the Q-value detection module. For example, when the control module sends an enable signal to the Q-value detection module, it is used to control the Q-value detection module to enter the working state of detecting the Q value; for example, when the control module sends a disable signal to the Q-value detection module, it is used to control the Q-value detection module to exit the detection state of detecting the Q value.
在本公开实施例中，所述控制模组发送使能信号给所述Q值检测模组的使能端，该使能端被所述使能信号激活，所述Q值检测模组进入检测所述Q值的工作状态。In the embodiment of the present disclosure, the control module sends an enable signal to the enable end of the Q value detection module, the enable end is activated by the enable signal, and the Q value detection module enters a working state of detecting the Q value.
如此，在本公开实施例中，可以在Q值检测模组需要检测Q值时，才使能所述Q值检测模组，从而使得Q值检测模组能够进入到检测Q值的工作状态。如此，本公开实施例无需使得Q值检测模组一直处于工作状态，进而能够节省无线充电装置的功耗。Thus, in the embodiment of the present disclosure, the Q value detection module can be enabled only when the Q value detection module needs to detect the Q value, so that the Q value detection module can enter the working state of detecting the Q value. Thus, the embodiment of the present disclosure does not need to keep the Q value detection module in the working state all the time, thereby saving the power consumption of the wireless charging device.
在一些应用场景中，当所述Q值检测模组基于使能信号进入到工作状态时，并非一直用于检测所述线圈的放电参数确定出Q值，仅当所述线圈发射无线信号时，才检测所述线圈的放电参数确定出Q值。In some application scenarios, when the Q value detection module enters the working state based on the enable signal, it is not always used to detect the discharge parameters of the coil to determine the Q value. The discharge parameters of the coil are detected to determine the Q value only when the coil transmits a wireless signal.
例如，请再次参见图4，在一些实施例中，所述Q值检测模组12，包括：For example, referring to FIG. 4 again, in some embodiments, the Q value detection module 12 includes:
检测电路121，与所述线圈111连接，用于检测所述线圈111发射无线信号时的放电参数；A detection circuit 121, connected to the coil 111, for detecting discharge parameters when the coil 111 transmits a wireless signal;
转换电路122，与所述检测电路121的输出端连接，用于根据放电参数确定出所述Q值。The conversion circuit 122 is connected to the output end of the detection circuit 121 and is used to determine the Q value according to the discharge parameters.
这里，所述检测电路，还包括：至少一个开关管。基于所述开关管的导通与否，控制所述Q值检测模组是否检测所述线圈的放电参数确定出Q值。Here, the detection circuit further includes: at least one switch tube. Based on whether the switch tube is turned on or off, the Q value detection module is controlled to detect the discharge parameters of the coil to determine the Q value.
示例性的，请参照图4，所述检测电路121，包括至少一个开关管1211；其中，所述开关管1211与所述线圈111连接；Exemplarily, referring to FIG. 4 , the detection circuit 121 includes at least one switch tube 1211 ; wherein the switch tube 1211 is connected to the coil 111 ;
所述控制模组13，还与所述开关管1211连接，用于向所述开关管1211发送第一控制信号，以控制所述开关管1211导通，或者，向所述开关管1211发送第二控制信号，以控制所述开关管1211关断；The control module 13 is also connected to the switch tube 1211, and is used to send a first control signal to the switch tube 1211 to control the switch tube 1211 to be turned on, or send a second control signal to the switch tube 1211 to control the switch tube 1211 to be turned off;
所述Q值检测模组12，用于在进入到所述工作状态后，当所述开关管1211关断时，检测所述线圈111发射所述无线信号的所述放电参数，并确定出所述Q值；或者，当所述开关管1211处于导通时，停止检测所述线圈的所述放电参数。The Q value detection module 12 is used to detect the discharge parameters of the wireless signal transmitted by the coil 111 and determine the Q value after entering the working state when the switch tube 1211 is turned off; or, when the switch tube 1211 is turned on, stop detecting the discharge parameters of the coil.
在实际应用中，所述开关管可以为两个，如图4所示，所述无线充电装置，还包括第一电源14；In practical applications, there may be two switch tubes, as shown in FIG4 , the wireless charging device further includes a first power source 14;
所述充电电路，还包括：谐振电容Cs；所述谐振电容Cs与所述线圈111连接；The charging circuit further includes: a resonant capacitor Cs; the resonant capacitor Cs is connected to the coil 111;
所述检测电路121：包括：两个开关管1211；其中，一个开关管1211连接在所述谐振电容Cs与所述第一电源14之间；另一个开关管1211的一端连接线圈111，另一端接地；The detection circuit 121 includes two switch tubes 1211 ; one of the switch tubes 1211 is connected between the resonant capacitor Cs and the first power supply 14 ; one end of the other switch tube 1211 is connected to the coil 111 , and the other end is grounded;
所述控制模组，还与两个所述开关管1211连接，用于向所述开关管1211发送第一控制信号，以控制所述开关管1211导通，或者，向所述开关管1211发送第二控制信号，以控制所述开关管1211关断；The control module is also connected to the two switch tubes 1211, and is used to send a first control signal to the switch tubes 1211 to control the switch tubes 1211 to be turned on, or send a second control signal to the switch tubes 1211 to control the switch tubes 1211 to be turned off;
在所述开关管1211导通时，所述第一电源给所述谐振电容Cs供电；在所述开关管1211断开时，所述线圈111基于所述谐振电容Cs的放电发射无线信号；When the switch tube 1211 is turned on, the first power supply supplies power to the resonant capacitor Cs; when the switch tube 1211 is turned off, the coil 111 transmits a wireless signal based on the discharge of the resonant capacitor Cs;
所述Q值检测模组12，用于在进入到所述工作状态后，当所述开关管1211关断时，检测所述线圈111发射所述无线信号的所述放电参数，并确定出所述Q值；或者，当所述开关管1211处于导通时，停止检测所述线圈111的所述放电参数。The Q value detection module 12 is used to detect the discharge parameters of the wireless signal transmitted by the coil 111 and determine the Q value after entering the working state when the switch tube 1211 is turned off; or, when the switch tube 1211 is turned on, stop detecting the discharge parameters of the coil 111.
这里，所述第一电源14用于在Q值检测模组进入工作状态时，给所述充电电路供电。在一实施例中，所述第一电源为5V电源。Here, the first power supply 14 is used to supply power to the charging circuit when the Q value detection module enters the working state. In one embodiment, the first power supply is a 5V power supply.
在一实施例中，如图4所示，在线圈111与所述开关管1211之间，还包括：谐振电容Cs。In one embodiment, as shown in FIG. 4 , a resonant capacitor Cs is further included between the coil 111 and the switch tube 1211 .
这里，所述开关管可以为任意具备导通或关断功能的元器件。例如，所述开关管可以为金属-氧化物半导体场效应晶体管(Metal-Oxide-Semiconductor Field-EffectTransistor，MOSFET)。Here, the switch tube may be any component with a turn-on or turn-off function. For example, the switch tube may be a metal-oxide-semiconductor field-effect transistor (MOSFET).
这里，在所述Q值检测模组基于使能信号进入工作状态时，当所述开关管断开时，所述检测电路用于检测所述线圈发射无线信号时的放电参数；当所述开关管导通时，所述检测电路不能检测所述线圈上的放电参数。Here, when the Q value detection module enters the working state based on the enable signal, when the switch tube is disconnected, the detection circuit is used to detect the discharge parameters when the coil transmits a wireless signal; when the switch tube is turned on, the detection circuit cannot detect the discharge parameters on the coil.
这里，所述控制模组通常控制所述充电装置的整体操作，例如控制所述开关管的导通与否等操作。所述控制模组可以为包括一个或多个处理器来执行指令，以完成相应的操作。Here, the control module generally controls the overall operation of the charging device, such as controlling whether the switch tube is turned on or off, etc. The control module may include one or more processors to execute instructions to complete corresponding operations.
这里，所述控制模组也可以为具有信号处理能力的控制电路；所述控制电路可以包括控制芯片或控制器等。Here, the control module may also be a control circuit with signal processing capability; the control circuit may include a control chip or a controller, etc.
这里，所述放电参数可以为电压值；所述检测电路，可用于检测所述线圈或所述谐振子电路的电压值。如此，所述检测电路可包含一个用于检测电压的电压计。Here, the discharge parameter may be a voltage value, and the detection circuit may be used to detect the voltage value of the coil or the resonant subcircuit. Thus, the detection circuit may include a voltmeter for detecting voltage.
这里，所述转换电路可以包含一个模拟数字转换器(ADC)转换器。所述ADC转换器用于将模拟电信号转换为数字信号。在本公开实施例中，当检测电压获取到电信号的放电参数时，可将电信号的放电参数转换成数字的放电参数进行计算，以确定出Q值。Here, the conversion circuit may include an analog-to-digital converter (ADC). The ADC converter is used to convert an analog electrical signal into a digital signal. In the embodiment of the present disclosure, when the detection voltage obtains the discharge parameter of the electrical signal, the discharge parameter of the electrical signal can be converted into a digital discharge parameter for calculation to determine the Q value.
如此，在公开实施例中，可以通过检测电路直接检测线圈上的放电参数，以及通过转换电路基于放电参数确定出Q值，能够提高检测Q值的精确度。Thus, in the disclosed embodiment, the discharge parameters on the coil can be directly detected by the detection circuit, and the Q value can be determined based on the discharge parameters by the conversion circuit, thereby improving the accuracy of detecting the Q value.
示例性的，请再次参见图3，本公开实施例提供一种无线充电装置，所述无线充电装置包括：充电电路11、Q值检测模组12、控制模组13及第一电源14；Exemplarily, please refer to FIG. 3 again. The embodiment of the present disclosure provides a wireless charging device, which includes: a charging circuit 11, a Q value detection module 12, a control module 13 and a first power supply 14;
所述充电电路11，包括：The charging circuit 11 comprises:
谐振子电路110；其中，所述谐振子电路110，包括线圈Ls以及谐振电容Cs；所述线圈Ls与所述谐振电容Cs串联连接；A resonant subcircuit 110; wherein the resonant subcircuit 110 comprises a coil Ls and a resonant capacitor Cs; the coil Ls and the resonant capacitor Cs are connected in series;
所述Q值检测模组12，包括：The Q value detection module 12 includes:
检测电路121，包括：第一开关管Q1、第一开关管Q2及检测子电路1212；其中，所述第一开关管Q1连接在所述谐振电容Cs与所述第一电源14之间；所述第二开关管Q2一端所述线圈Ls，另一端接地；所述检测子电路1212的输入端与所述谐振子电路110连接，用于在所述第一开关管Q1及所述第二开关管Q2断开时，检测所述谐振子电路上的放电参数；The detection circuit 121 includes: a first switch tube Q1, a first switch tube Q2 and a detection sub-circuit 1212; wherein the first switch tube Q1 is connected between the resonant capacitor Cs and the first power supply 14; one end of the second switch tube Q2 is connected to the coil Ls, and the other end is grounded; the input end of the detection sub-circuit 1212 is connected to the resonant sub-circuit 110, and is used to detect the discharge parameters on the resonant sub-circuit when the first switch tube Q1 and the second switch tube Q2 are disconnected;
转换电路122，与所述检测子电路1212的输出端连接，用于根据所述放电参数确定出Q值；The conversion circuit 122 is connected to the output end of the detection subcircuit 1212 and is used to determine the Q value according to the discharge parameter;
所述控制模组13，与所述Q值检测模组的使能端连接，用于向所述Q值检测模组发送使能所述Q值检测模组的使能信号；The control module 13 is connected to the enable terminal of the Q value detection module, and is used to send an enable signal to the Q value detection module to enable the Q value detection module;
所述控制模组13，还与所述第一开关管Q1及第二开关管Q2连接，用于控制所述第一开关管Q1及所述第二开关管Q2的开关状态。The control module 13 is also connected to the first switch tube Q1 and the second switch tube Q2, and is used to control the switching states of the first switch tube Q1 and the second switch tube Q2.
在上述示例中，所述Q值检测模组也可以只用于检测所述线圈上的放电参数。例如，所述检测子电路1212的输入端与所述线圈Ls的两端连接，用于检测所述线圈Ls上的电压。In the above example, the Q value detection module may also be used only to detect the discharge parameters on the coil. For example, the input end of the detection subcircuit 1212 is connected to both ends of the coil Ls to detect the voltage on the coil Ls.
在上述示例中，所述Q值检测模组的工作流程为：In the above example, the workflow of the Q value detection module is:
第一步：控制模组13，向Q值检测模组12发送使能信号后，所述Q值检测模组12基于所述使能信号进入工作状态；Step 1: After the control module 13 sends an enable signal to the Q value detection module 12, the Q value detection module 12 enters a working state based on the enable signal;
第二步：第一电源14给所述无线充电装置供电；所述控制模组13向第一开关管Q1及第二开关管Q2发送第一控制信号；所述第一开关管Q1及所述第二开关管Q2导通，所述第一电源14给谐振电容Cs电容充电；充电时间为T_c；Step 2: The first power source 14 supplies power to the wireless charging device; the control module 13 sends a first control signal to the first switch tube Q1 and the second switch tube Q2; the first switch tube Q1 and the second switch tube Q2 are turned on, and the first power source 14 charges the resonant capacitor Cs; the charging time is T_c;
在上述第二步时，所述Q值检测模组虽然被使能，但是由于第一电源14给所述Cs电容充电，所述线圈Ls并不能发射无线信号，所述Q值检测模组，不能用于检测所述线圈的放电参数确定出Q值。In the second step, although the Q value detection module is enabled, the coil Ls cannot transmit a wireless signal because the first power supply 14 charges the Cs capacitor. The Q value detection module cannot be used to detect the discharge parameters of the coil to determine the Q value.
第三步，在T_c时间结束时，所述控制模组13向所述第一开关管Q1及第二所述第二开关管Q2发送第二控制信号；所述第一开关管Q1和所述第二开关管Q2断开时，所述线圈Ls与所述谐振电容Cs自由振荡；在发生自由振荡时间内，采集时间间隔ΔT内的Ls与Cs两端的电压Vcoil；至少采集该ΔT内两个采样点的Vcoil；并基于Vcoil，计算出Q值。In the third step, when the T_c time ends, the control module 13 sends a second control signal to the first switch tube Q1 and the second switch tube Q2; when the first switch tube Q1 and the second switch tube Q2 are disconnected, the coil Ls and the resonant capacitor Cs oscillate freely; during the free oscillation time, the voltage Vcoil across Ls and Cs within the time interval ΔT is collected; at least the Vcoil of two sampling points within the ΔT is collected; and based on Vcoil, the Q value is calculated.
在一可选实施例中，如图5所示，采集第一时刻T1的第一电压Vth1，以及第二时刻T2第二时刻Vth2；此时时间间隔ΔT＝T2-T1；如此，可由计算出L/R：In an optional embodiment, as shown in FIG5 , the first voltage Vth1 at the first time T1 and the second voltage Vth2 at the second time T2 are collected; at this time, the time interval ΔT=T2-T1; thus, Calculate L/R:
其中，所述 Among them, the
如此；可计算出Q值：In this way, the Q value can be calculated:
其中，所述W为工作频率；所述L为线圈电感，所述R为放置在所述第一终端上物体的电阻。 Wherein, W is the operating frequency; L is the coil inductance; and R is the resistance of the object placed on the first terminal.
在实际应用中，由于不知道实际放置在第一终端上物体的R的阻抗，以及很难准确确定出第一终端上线圈L的感抗，从而无法通过来计算出准确的Q值。而本公开实施例，可以通过采样线圈发送无线信号时的电压值，通过计算出采集该电压值的时间间隔，从而算出L/R的比值；从而能够基于计算出比较准确的Q值。如此，本公开实施例，可以大大提高计算所述Q值的准确性。In practical applications, since the impedance of the object R actually placed on the first terminal is unknown and it is difficult to accurately determine the inductive reactance of the coil L on the first terminal, it is impossible to To calculate the accurate Q value. In the embodiment of the present disclosure, the voltage value when the sampling coil sends the wireless signal can be used to calculate the time interval for collecting the voltage value, thereby calculating the L/R ratio; thus, the L/R ratio can be calculated based on the voltage value when the sampling coil sends the wireless signal. A relatively accurate Q value is calculated. In this way, the embodiment of the present disclosure can greatly improve the accuracy of calculating the Q value.
如图4所示，在一些实施例中，所述检测电路121，用于在所述充电电路发射第一脉冲信号时，通过检测所述线圈111上的放电参数确定出第一Q值；As shown in FIG. 4 , in some embodiments, the detection circuit 121 is used to determine a first Q value by detecting a discharge parameter on the coil 111 when the charging circuit transmits a first pulse signal;
所述控制模组13，与所述转换电路122的输出端连接，用于基于所述第一Q值与预定的阈值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物。The control module 13 is connected to the output end of the conversion circuit 122, and is used to determine whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal based on the first Q value and a predetermined threshold.
此处的干扰无线充电的异物可以为各种金属物体或者包含金属的物体。例如，所述异物可以为含金属的钥匙、铁片等。The foreign objects that interfere with wireless charging here may be various metal objects or objects containing metal. For example, the foreign objects may be keys containing metal, iron sheets, etc.
在本公开实施例中，通过确定第一终端的Q值来确定第一终端的预定范围内是否存在干扰无线充电的异物，无需考虑第一终端的线圈与其它终端的线圈的对齐问题，也无需考虑与其它终端的功率损耗问题，从而能够大大提高检测异物的准确性，大大降低误判的概率。In the embodiment of the present disclosure, by determining the Q value of the first terminal, it is determined whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal. There is no need to consider the alignment of the coil of the first terminal with the coils of other terminals, nor is there any need to consider the power loss problem with other terminals. This can greatly improve the accuracy of detecting foreign objects and greatly reduce the probability of misjudgment.
请再次参见图4，在一些实施例中，所述检测电路121，用于在所述充电电路发射所述第二脉冲信号时，通过检测所述线圈上111的放电参数确定第二Q值；Please refer to FIG. 4 again. In some embodiments, the detection circuit 121 is used to determine the second Q value by detecting the discharge parameter of the coil 111 when the charging circuit transmits the second pulse signal;
所述装置，还包括：The device further comprises:
通信模组15，用于接收第二终端基于所述第二脉冲信号返回的参考Q值；The communication module 15 is used to receive a reference Q value returned by the second terminal based on the second pulse signal;
所述控制模组13，与所述通信模组15连接，用于基于所述第二Q值及所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。The control module 13 is connected to the communication module 15, and is used to determine whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal based on the second Q value and the reference Q value.
这里，所述第二脉冲信号，用于唤醒所述第二终端。所述第二脉冲信号的周期大于所述第一脉冲信号的周期。Here, the second pulse signal is used to wake up the second terminal. The period of the second pulse signal is greater than the period of the first pulse signal.
这里，所述第二终端在所述第一终端的预定范围内；所述第二终端能够基于所述第一终端发送的无线信号进行充电。Here, the second terminal is within a predetermined range of the first terminal; and the second terminal can be charged based on a wireless signal sent by the first terminal.
在本公开实施例中，可以基于所述第二终端返回的参考Q值，以及检测第一终端的线圈发射无线信号的Q值，来确定第一终端与第二终端之间是否存在干扰无线充电的异物；如此，能够减少存在异物的误判情况发生，从而能够提高无线充电的安全性。In the embodiment of the present disclosure, it is possible to determine whether there are foreign objects that interfere with wireless charging between the first terminal and the second terminal based on the reference Q value returned by the second terminal and the Q value of the wireless signal transmitted by the coil of the first terminal; in this way, the occurrence of misjudgment of the presence of foreign objects can be reduced, thereby improving the safety of wireless charging.
以下结合上述任意无线充电装置实施例提供了一个具体的无线充电装置示例，如图6所示，所述无线充电装置，包括：The following provides a specific example of a wireless charging device in combination with any of the above wireless charging device embodiments. As shown in FIG6 , the wireless charging device includes:
充电电路11、Q值检测模组12、控制模组13、第一电源14、通信模组15、第二电源16、整流电路17；其中，Charging circuit 11, Q value detection module 12, control module 13, first power supply 14, communication module 15, second power supply 16, rectifier circuit 17; wherein,
所述充电电路11，包括：谐振子电路110；所述谐振子电路110包括：线圈Ls及谐振电容Cs；所述充电电路11与所述整流电路17连接；The charging circuit 11 includes: a resonant subcircuit 110; the resonant subcircuit 110 includes: a coil Ls and a resonant capacitor Cs; the charging circuit 11 is connected to the rectifier circuit 17;
所述整流电路17，连接在所述充电电路11与所述第二电源16之间；所述整流电路包括第三开关管Q3、第四开关管Q4、第五开关管Q5及第六开关管Q6；The rectifier circuit 17 is connected between the charging circuit 11 and the second power source 16; the rectifier circuit includes a third switch tube Q3, a fourth switch tube Q4, a fifth switch tube Q5 and a sixth switch tube Q6;
所述Q值检测模组12，包括：检测电路121及转换电路122；其中，所述检测电路121，包括：第一开关管Q1、第二开关管Q2；所述检测电路121的输入端与所述谐振子电路110连接，所述检测电路121的输出端与所述转换电路122连接；其中，所述第一开关管Q1连接在所述谐振电容Cs与第一电源16之间；所述第二开关管Q2一端连接线圈Ls，另一端接地；The Q value detection module 12 includes: a detection circuit 121 and a conversion circuit 122; wherein the detection circuit 121 includes: a first switch tube Q1 and a second switch tube Q2; the input end of the detection circuit 121 is connected to the resonant subcircuit 110, and the output end of the detection circuit 121 is connected to the conversion circuit 122; wherein the first switch tube Q1 is connected between the resonant capacitor Cs and the first power supply 16; one end of the second switch tube Q2 is connected to the coil Ls, and the other end is grounded;
所述控制模组13，分别与所述第一开关管Q1及所述第二开关管Q2连接；所述控制模组还分别与所述Q值检测模组12的使能端、所述转换电路122的输出端连接；The control module 13 is connected to the first switch tube Q1 and the second switch tube Q2 respectively; the control module is also connected to the enable terminal of the Q value detection module 12 and the output terminal of the conversion circuit 122 respectively;
所述通信模组16，与所述控制模组13连接。The communication module 16 is connected to the control module 13 .
这里，当无线充电装置用于正向充电时，所述充电电路接收无线信号，所述整流电路将交流信号转换为直流信号，给所述第二电源供电；当无线充电装置用于反向供电时，所述整流电路将所述第二电源提供的直流信号转换为交流信号，再经所述充电电路向外界发射无线信号进行放电。Here, when the wireless charging device is used for forward charging, the charging circuit receives the wireless signal, and the rectifier circuit converts the AC signal into a DC signal to supply power to the second power supply; when the wireless charging device is used for reverse power supply, the rectifier circuit converts the DC signal provided by the second power supply into an AC signal, and then transmits a wireless signal to the outside world through the charging circuit for discharge.
这里，所述Q值检测模组，用于采集所述充电电路在发射无线信号时线圈上的放电参数，例如，电压；并基于所述放电参数确定出Q值。Here, the Q value detection module is used to collect the discharge parameters, such as voltage, on the coil of the charging circuit when transmitting a wireless signal; and determine the Q value based on the discharge parameters.
这里，所述控制模组，用于控制所述无线充电装置的整体操作。例如，所述控制模组，用于控制所述第一开关管及第二开关管的导通与关断，或者用于控制所述Q值检测模组进入检测Q值的工作状态或退出检测Q值的控制状态；以及用于基于Q值，确定是否存在干扰无线充电的异物或者第二设备等。Here, the control module is used to control the overall operation of the wireless charging device. For example, the control module is used to control the on and off of the first switch tube and the second switch tube, or to control the Q value detection module to enter the working state of detecting the Q value or exit the control state of detecting the Q value; and to determine whether there is a foreign object or a second device that interferes with wireless charging based on the Q value.
这里，所述整流电路的Q3、Q4、Q5及Q6均可以为MOS管；其中，Q3、Q4、Q5及Q6的整流电路构成全桥整流电路。Here, Q3, Q4, Q5 and Q6 of the rectifier circuit can all be MOS tubes; wherein the rectifier circuit of Q3, Q4, Q5 and Q6 constitutes a full-bridge rectifier circuit.
在一实施例中，所述控制模组为MCU控制。In one embodiment, the control module is controlled by MCU.
在一实施例中，所述整流电路与所述第二电源之间还包括：至少一个MOS管；用于调节所述整流电路的输出电压。例如，如图6中所示的MOS管Q7。In one embodiment, the rectifier circuit and the second power supply further include: at least one MOS transistor for adjusting the output voltage of the rectifier circuit, for example, the MOS transistor Q7 shown in FIG6 .
在一实施例中，所述无线充电装置还包括内部供电模组，所述内部供电模组，用于给无线充电装置的各个模组或电路供电。当然，在其它实施例中，给无线充电装置的各个模组或电路供电，也可以采用外部电源进行供电。In one embodiment, the wireless charging device further comprises an internal power supply module, and the internal power supply module is used to supply power to each module or circuit of the wireless charging device. Of course, in other embodiments, each module or circuit of the wireless charging device may also be supplied with power by an external power supply.
在本公开实施例中，可以基于Q值检测模组给检测线圈上的放电参数，从而确定出Q值，如此，不需要知道线圈的感抗及线圈上是否存在物体的电阻，从而能够准确的计算出Q值。且，本公开实施例还可以基于Q值，确定第一终端的预定范围内是否存在异物，无需考虑第一终端与其他接收设备的线圈的相对位置、无需考虑无线信号在第一终端与其他接收设备之间传输的功率损耗，能够大大提高检测异物的准确性，减少是否存在异物的误判，从而提高了无线充电的安全性。In the embodiment of the present disclosure, the Q value can be determined based on the discharge parameters of the detection coil given by the Q value detection module. In this way, it is not necessary to know the inductive reactance of the coil and the resistance of the object on the coil, so that the Q value can be accurately calculated. Moreover, the embodiment of the present disclosure can also determine whether there is a foreign object within the predetermined range of the first terminal based on the Q value, without considering the relative position of the coils of the first terminal and other receiving devices, and without considering the power loss of the wireless signal transmitted between the first terminal and other receiving devices. It can greatly improve the accuracy of detecting foreign objects, reduce the misjudgment of whether there is a foreign object, and thus improve the safety of wireless charging.
这里需要指出的是：以下一种无线充电方法的描述，与上述一种无线充电装置的描述对应的。对于本公开中的无线充电方法实施例未披露的技术细节，请参照本公开所述的无线充电装置实施例的描述，此处不做详细阐述说明。It should be noted here that the following description of a wireless charging method corresponds to the description of the above-mentioned wireless charging device. For technical details not disclosed in the wireless charging method embodiment of the present disclosure, please refer to the description of the wireless charging device embodiment described in the present disclosure, and no detailed explanation is given here.
图7是根据一示例性实施例示出的一种无线充电方法的流程图，如图7所示，所述方法包括以下步骤：FIG. 7 is a flow chart of a wireless charging method according to an exemplary embodiment. As shown in FIG. 7 , the method includes the following steps:
步骤S31：获取所述Q值检测模组在所述充电电路发送无线信号时检测所述线圈上的放电参数得到的Q值；Step S31: obtaining a Q value obtained by the Q value detection module detecting a discharge parameter on the coil when the charging circuit sends a wireless signal;
步骤S32：根据所述Q值，确定所述第一终端的预定范围内是否存在干扰无线充电的异物。Step S32: determining, based on the Q value, whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal.
本公开实施例所提供的无线充电方法，应用于第一终端；其中，所述第一终端包括充电电路及品质因子Q值检测模组，所述充电电路包括：线圈。The wireless charging method provided in the embodiment of the present disclosure is applied to a first terminal; wherein the first terminal includes a charging circuit and a quality factor Q value detection module, and the charging circuit includes: a coil.
这里，所述第一终端可以为任意一个可接收射频信号的电子设备；所述第一终端也可以为包含无线充电接收器的终端。所述第一终端包括但不限于：手机、平板电脑或可穿戴式设备等移动终端，还可以为其它能够接收无线充电的固定设备。Here, the first terminal can be any electronic device that can receive radio frequency signals; the first terminal can also be a terminal that includes a wireless charging receiver. The first terminal includes but is not limited to: mobile terminals such as mobile phones, tablet computers or wearable devices, and can also be other fixed devices that can receive wireless charging.
这里，所述步骤S31，包括：Here, the step S31 includes:
采集所述线圈在第一时刻的第一电压及在第二时刻的第二电压；Collecting a first voltage of the coil at a first moment and a second voltage of the coil at a second moment;
基于所述第一电压、所述第二电压及所述第二时刻与所述第一时刻之间的时间间隔，获得所述线圈的电感与所述线圈上电阻的阻抗比值；Obtaining an impedance ratio of the inductance of the coil to the resistance on the coil based on the first voltage, the second voltage, and a time interval between the second moment and the first moment;
基于所述阻抗比值及所述线圈的工作频率，获得所述Q值。The Q value is obtained based on the impedance ratio and the operating frequency of the coil.
如此，在本公开实施例，可以通过采样线圈发送无线信号时的电压，通过计算出采集该电压值的时间间隔，从而算出线圈的电感与线圈上电阻(即第一终端上物体的电阻)的阻抗比值；从而能够基于计算出比较准确的Q值；从而可以大大提高计算所述Q值的准确性。Thus, in the disclosed embodiment, the voltage when the sampling coil sends a wireless signal can be measured, and the time interval for collecting the voltage value can be calculated, thereby calculating the impedance ratio of the inductance of the coil to the resistance on the coil (i.e., the resistance of the object on the first terminal); thereby, a relatively accurate Q value can be calculated based on the calculation; thereby, the accuracy of calculating the Q value can be greatly improved.
当然，在其它实施例中，采集所述线圈上的电压值，可以采集多个时间段内的电压值，例如，采集T1的第一电压、T2的第二电压、T3的第三电压、……、Tn的第N电压；如此，可以根据该些电压中任意两个电压，及该两个电压之间的时间间隔均可计算出阻抗比值；再根据多个阻抗比值的平均值，计算出Q值；从而能够进一步提高Q值的准确性。Of course, in other embodiments, the voltage value on the coil may be collected, and the voltage values within multiple time periods may be collected, for example, the first voltage of T1, the second voltage of T2, the third voltage of T3, ..., the Nth voltage of Tn may be collected; in this way, the impedance ratio may be calculated based on any two of these voltages and the time interval between the two voltages; and the Q value may be calculated based on the average value of the multiple impedance ratios; thereby further improving the accuracy of the Q value.
这里，所述无线信号包括：第一脉冲信号或第二脉冲信号。在实际应用中，所述第一脉冲信号，用于检测是否存在干扰无线充电的异物；所述第二脉冲信号，用于唤醒第二终端。其中，所述第二终端为所述第一终端预定范围内的终端，所述第二终端能够基于所述第一终端发射的无线信号进行充电。Here, the wireless signal includes: a first pulse signal or a second pulse signal. In practical applications, the first pulse signal is used to detect whether there is a foreign object that interferes with wireless charging; the second pulse signal is used to wake up the second terminal. The second terminal is a terminal within a predetermined range of the first terminal, and the second terminal can be charged based on the wireless signal transmitted by the first terminal.
在一实施例中，所述第一脉冲信号，为短脉冲能量(Analog ping)的无线信号；所述第二脉冲信号，为长脉冲能量(Digital ping)的无线信号。这里，所述第一脉冲信号所携带的能量小于所述第二脉冲信号所携带的能量。In one embodiment, the first pulse signal is a wireless signal with short pulse energy (analog ping), and the second pulse signal is a wireless signal with long pulse energy (digital ping). Here, the energy carried by the first pulse signal is less than the energy carried by the second pulse signal.
此处的干扰无线充电的异物可以为各种金属物体或者包含金属的物体。例如，所述异物可以为含金属的钥匙、铁片等。The foreign objects that interfere with wireless charging here may be various metal objects or objects containing metal. For example, the foreign objects may be keys containing metal, iron sheets, etc.
在实际应用中，若第一终端的预定范围内存在金属异物时，而由于Q值检测不准确，可能出现没有存在金属异物的误判；如此，若第一终端发射无线信号给第二终端供电，所述金属异物会发热，会给第一终端及第二终端的无线充电带来很大干扰，以及给第一终端和第二终端带来一定程度的损耗。In actual applications, if there is a metal foreign object within the predetermined range of the first terminal, due to inaccurate Q value detection, an erroneous judgment that there is no metal foreign object may occur; in this case, if the first terminal transmits a wireless signal to power the second terminal, the metal foreign object will generate heat, which will cause great interference to the wireless charging of the first terminal and the second terminal, and cause a certain degree of loss to the first terminal and the second terminal.
而在本公开实施例中，可以根据Q值检测模组直接检测线圈上的放电参数确定出Q值，其能够提高确定Q值的准确性。且，由于提高了检测Q值的准确性，从而也能大大提高检测异物的准确性，大大减少了由于检测的Q值不准确而导致实际存在异物但没有检测到存在异物的情况发生，能够提高无线充电的安全性。In the embodiment of the present disclosure, the Q value can be determined by directly detecting the discharge parameters on the coil according to the Q value detection module, which can improve the accuracy of determining the Q value. Moreover, since the accuracy of detecting the Q value is improved, the accuracy of detecting foreign objects can also be greatly improved, which greatly reduces the situation where the foreign objects are actually present but not detected due to inaccurate Q value detection, and can improve the safety of wireless charging.
在一些实施例中，所述方法还包括：In some embodiments, the method further comprises:
生成使能Q值检测模组的使能信号；其中，所述使能信号，用于触发所述Q值检测模组进入检测Q值的工作状态。Generate an enable signal for enabling the Q value detection module; wherein the enable signal is used to trigger the Q value detection module to enter a working state of detecting the Q value.
在另一些实施例中，所述方法还包括：In some other embodiments, the method further comprises:
生成去使能信号；其中，所述去使能信号，用于触发所述Q值检测模组退出检测Q值的工作状态。Generate a disable signal; wherein, the disable signal is used to trigger the Q value detection module to exit the working state of detecting the Q value.
在本公开实施例中，可以在Q值检测模组需要检测Q值时，才使能所述Q值检测模组，以使得Q值检测模组进入工作状态；以及在Q值检测模组无需检测Q值时，去使能所述Q值检测模组，以使得Q值检测模组退出工作状态。如此，无需使得Q值检测模组一直处于检测Q值的工作状态，能够节省无线充电装置的功耗。In the disclosed embodiment, the Q value detection module can be enabled only when the Q value detection module needs to detect the Q value, so that the Q value detection module enters the working state; and when the Q value detection module does not need to detect the Q value, the Q value detection module is disabled, so that the Q value detection module exits the working state. In this way, there is no need to keep the Q value detection module in the working state of detecting the Q value, which can save the power consumption of the wireless charging device.
这里，可以理解的是，所述Q值检测模组进入检测Q值的工作状态后，可以用于检测线圈的放电参数，也可以不用于检测线圈的放电参数。例如，所述Q值检测模组进入检测Q值的工作状态后，仅当所述线圈发射无线信号时，才检测所述线圈的放电参数，以确定出Q值。Here, it can be understood that after the Q value detection module enters the working state of detecting the Q value, it can be used to detect the discharge parameters of the coil, or it can not be used to detect the discharge parameters of the coil. For example, after the Q value detection module enters the working state of detecting the Q value, the discharge parameters of the coil are detected to determine the Q value only when the coil transmits a wireless signal.
这里，所述使能信号，仅用于使能所述Q值检测模组进入工作状态；所述去使能信号，仅用于使能所述Q值检测模组退出所述工作状态。Here, the enable signal is only used to enable the Q value detection module to enter the working state; the disable signal is only used to enable the Q value detection module to exit the working state.
如图8所示，在一些实施例中，所述步骤S31，包括：As shown in FIG. 8 , in some embodiments, step S31 includes:
步骤S311：获取所述Q值检测模组在所述充电电路发送第一脉冲信号时，检测所述线圈上的放电参数得到的第一Q值；Step S311: acquiring a first Q value obtained by the Q value detection module detecting a discharge parameter on the coil when the charging circuit sends a first pulse signal;
所述步骤S32，包括：The step S32 comprises:
步骤S321：基于所述第一Q值与预定的阈值，确定所述第一终端的预定范围内是否存在干扰无线充电干扰异物。Step S321: Based on the first Q value and a predetermined threshold, determine whether there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal.
其中，所述步骤S321，包括：Wherein, the step S321 includes:
若所述第一Q值小于或等于所述阈值，确定所述第一终端的预定范围内存在干扰无线充电的异物；If the first Q value is less than or equal to the threshold, it is determined that there is a foreign object interfering with wireless charging within a predetermined range of the first terminal;
或者，or,
若所述第一Q值大于所述阈值，确定所述第一终端的预定范围内不存在干扰无线充电的异物。If the first Q value is greater than the threshold, it is determined that there is no foreign object interfering with wireless charging within a predetermined range of the first terminal.
这里，Q值的大小与线圈的感抗呈正相关，Q值的大小与电阻的阻抗。如此，在本公开实施例中，通过设置一个预定阈值；基于检测到的Q值与阈值进行比较，可以确定出当前第一终端的预定范围内是存在异物还是存在第二终端。Here, the magnitude of the Q value is positively correlated with the inductive reactance of the coil, and the magnitude of the Q value is positively correlated with the impedance of the resistor. Thus, in the embodiment of the present disclosure, by setting a predetermined threshold value, based on the comparison between the detected Q value and the threshold value, it can be determined whether there is a foreign object or a second terminal within the predetermined range of the current first terminal.
该第二终端，即为接收设备，可以接收所述第一终端发送的无线信号。The second terminal, namely a receiving device, can receive the wireless signal sent by the first terminal.
在一些应用场景中，若第一终端预定范围内存在干扰无线充电的异物后，继续发送第一脉冲信号，用于继续进行检测Q值；直到确定出预定范围内存在第二终端后，才转换成发射第二脉冲信号。In some application scenarios, if there is a foreign object that interferes with wireless charging within a predetermined range of the first terminal, the first pulse signal continues to be sent to continue detecting the Q value; until it is determined that there is a second terminal within the predetermined range, it is converted to transmitting the second pulse signal.
例如，请再次参见图9，在一些实施例中，所述方法还包括：For example, referring to FIG. 9 again, in some embodiments, the method further includes:
步骤S33：响应于所述第一终端的预定范围内不存在干扰无线充电的异物，控制所述充电电路发射第二脉冲信号；Step S33: In response to the absence of foreign objects interfering with wireless charging within a predetermined range of the first terminal, controlling the charging circuit to transmit a second pulse signal;
其中，所述第二脉冲信号用于唤醒所述第二终端，所述第二脉冲信号的周期大于所述第一脉冲信号的周期。The second pulse signal is used to wake up the second terminal, and a period of the second pulse signal is greater than a period of the first pulse signal.
在本公开实施例中，若确定第一终端的预定范围存在第二终端，可以发射第二脉冲信号，以用于唤醒第二终端。且，在本公开实施例中，可以通过发射的第二脉冲信号，进一步判断出所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。In the embodiment of the present disclosure, if it is determined that there is a second terminal within the predetermined range of the first terminal, a second pulse signal may be transmitted to wake up the second terminal. In addition, in the embodiment of the present disclosure, it is possible to further determine whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal through the transmitted second pulse signal.
如图10所述所示，在一些实施例中，所述步骤S31，包括：As shown in FIG. 10 , in some embodiments, step S31 includes:
步骤S312：获取所述Q值检测模组在所述充电电路发送第二脉冲信号时，检测所述线圈上的放电参数得到的第二Q值；Step S312: acquiring a second Q value obtained by the Q value detection module detecting a discharge parameter on the coil when the charging circuit sends a second pulse signal;
所述方法还包括：The method further comprises:
步骤S34：接收所述第二终端基于所述第二脉冲信号返回的参考Q值；Step S34: receiving a reference Q value returned by the second terminal based on the second pulse signal;
步骤S35：基于所述第二Q值与所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。Step S35: Based on the second Q value and the reference Q value, determine whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal.
这里，所述第二终端为第一类充电协议的终端；其中，所述第一充电协议包括但不限于：私有充电协议或者扩展功率规范(Extend Power Profile，EPP)协议。Here, the second terminal is a terminal of the first type of charging protocol; wherein the first charging protocol includes but is not limited to: a private charging protocol or an Extended Power Profile (EPP) protocol.
这里，所述第一类充电协议的终端，支持发送参考Q值。Here, the terminal of the first type of charging protocol supports sending a reference Q value.
在本公开实施例中，第一终端可以采用带内通信的方式接收所述第二终端返回的参考Q值，或者，采用带外通信的方式接收所述第二终端返回的参考Q值。这里，带内通信的方式是：将参考Q值携带到无线信号中进行传输；带外通信的方式是：采用无线网络或者蓝牙等直接传输参考Q值。In the embodiment of the present disclosure, the first terminal may receive the reference Q value returned by the second terminal by in-band communication, or may receive the reference Q value returned by the second terminal by out-band communication. Here, the in-band communication method is: carrying the reference Q value into a wireless signal for transmission; the out-band communication method is: directly transmitting the reference Q value by wireless network or Bluetooth.
其中，所述步骤S35，包括：Wherein, the step S35 comprises:
若所述第二Q值大于或等于预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间不存在干扰无线充电的异物；If the second Q value is greater than or equal to the reference Q value of a predetermined multiple, it is determined that there is no foreign object interfering with wireless charging between the first terminal and the second terminal;
或者，or,
若所述第二Q值小于所述预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间存在干扰无线充电的异物。If the second Q value is less than the reference Q value of the predetermined multiple, it is determined that there is a foreign object interfering with wireless charging between the first terminal and the second terminal.
这里，所述预定倍数可以为大于或等于0.7的数值。在一实施例中，所述预定倍数为0.8。如此，通过预定倍数的设置，考虑了周围环境对Q值中阻抗值的影响，因此能够进一步提高实际检测异物的准确度。Here, the predetermined multiple can be a value greater than or equal to 0.7. In one embodiment, the predetermined multiple is 0.8. In this way, by setting the predetermined multiple, the influence of the surrounding environment on the impedance value in the Q value is taken into account, so the accuracy of actual detection of foreign matter can be further improved.
在上述实施例中，设置的预定的阈值往往也是小于参考Q值的。In the above embodiments, the predetermined threshold is often set to be smaller than the reference Q value.
在本公开实施例中，若第二终端可以上报其参考Q值，可以基于在第一终端检测到的Q值与第二终端上报的参考Q值，将检测的Q值与实际上报的参考值进行比较，以判断出第一终端与第二终端之间是否存在异物；如此，能够大大提高异物检测的准确性。In the embodiment of the present disclosure, if the second terminal can report its reference Q value, the detected Q value can be compared with the actually reported reference value based on the Q value detected at the first terminal and the reference Q value reported by the second terminal to determine whether there is a foreign object between the first terminal and the second terminal; in this way, the accuracy of foreign object detection can be greatly improved.
在一些应用场景中，若确定出第一终端与第二终端之间不存在异物，则可以进入功率传输阶段；此处的功率传输阶段，为第一终端发送无线信号给第二终端进行充电的阶段。或者，若确定出第一终端与第二终端之间存在异物，则确定第一终端转换发送第一脉冲信号；此时可以不进行Q值检测。In some application scenarios, if it is determined that there is no foreign object between the first terminal and the second terminal, the power transmission stage can be entered; the power transmission stage here is the stage in which the first terminal sends a wireless signal to the second terminal for charging. Alternatively, if it is determined that there is a foreign object between the first terminal and the second terminal, it is determined that the first terminal converts and sends the first pulse signal; at this time, Q value detection may not be performed.
在一些实施例中，所述方法还包括：In some embodiments, the method further comprises:
若在预定时间内未接收到所述第二终端发送的参考Q值，获取所述第一终端的发送功率及所述第二终端的接收功率；If the reference Q value sent by the second terminal is not received within a predetermined time, obtaining the transmit power of the first terminal and the receive power of the second terminal;
基于所述发送功率及所述接收功率的差值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。Based on the difference between the transmission power and the reception power, it is determined whether there is a foreign object interfering with wireless charging between the first terminal and the second terminal.
这里所述第二终端为第二类充电协议的终端；其中，所述第二充电协议包括但不限于：基础功率规范(Basic Power Profile，BPP)协议。Here, the second terminal is a terminal of the second type of charging protocol; wherein the second charging protocol includes but is not limited to: Basic Power Profile (BPP) protocol.
这里，所述第二类充电协议的终端，不支持发送参考Q值。Here, the terminal of the second type of charging protocol does not support sending a reference Q value.
其中，所述基于所述发送功率及所述接收功率的差值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物，包括：Wherein, determining whether there is a foreign object interfering with wireless charging between the first terminal and the second terminal based on the difference between the transmit power and the receive power includes:
若所述发送功率及所述接收功率的差值，大于或等于预定损耗功率，确定所述第一终端与所述第二终端之间存在干扰充电的异物；If the difference between the transmission power and the reception power is greater than or equal to a predetermined power loss, it is determined that there is a foreign object interfering with charging between the first terminal and the second terminal;
或者，or,
若所述发送功率及所述接收功率的差值，小于所述预定损耗功率，确定所述第一终端与所述第二终端之间不存在干扰充电的异物。If the difference between the transmission power and the reception power is less than the predetermined power loss, it is determined that there is no foreign object interfering with charging between the first terminal and the second terminal.
在本公开实施例中，由于第二终端不具备发送参考Q值的能力，或者由于其它原因导致所述第一终端在预定时间内接收到第二终端发送的参考Q值，则可以基于功率的损耗，来进行异物的检测。如此，本公开实施例，也可以在第一终端未收到第二终端上报参考Q值的情况下，仍能通过功耗损耗来检测第一终端和第二终端之间的是否存在干扰无线充电的异物，从而使得针对不支持上报的第二终端，也能检测其与第一终端之间是否存在异物。In the embodiment of the present disclosure, since the second terminal does not have the ability to send a reference Q value, or due to other reasons, the first terminal receives the reference Q value sent by the second terminal within a predetermined time, foreign objects can be detected based on power loss. In this way, in the embodiment of the present disclosure, even if the first terminal does not receive the reference Q value reported by the second terminal, it can still detect whether there is a foreign object between the first terminal and the second terminal that interferes with wireless charging through power consumption loss, so that even for the second terminal that does not support reporting, it can also detect whether there is a foreign object between it and the first terminal.
以下结合上述任意无线充电装置实施例提供了一个具体的无线充电方法示例，所述无线充电方法应用于第一终端，所述第一终端包括：充电电路及品质因子Q值检测模组，所述充电电路包括：线圈。如图11所示，所述方法包括以下步骤：The following provides a specific wireless charging method example in combination with any of the above wireless charging device embodiments, the wireless charging method is applied to a first terminal, the first terminal includes: a charging circuit and a quality factor Q value detection module, the charging circuit includes: a coil. As shown in FIG11 , the method includes the following steps:
步骤51：若检测到作用于第一终端的用户界面UI的触发操作，启动所述第一终端的无线反向充电状态；Step 51: if a triggering operation acting on the user interface UI of the first terminal is detected, the wireless reverse charging state of the first terminal is started;
这里，用户点击所述第一终端的UI上的无线反向充电的快捷键，例如，如图12所示，点击UI上的“无线反向充电”按键；所述第一终端会检测到作用于所述UI上的触发操作，从而启动所述第一终端的无线充电状态。Here, the user clicks the wireless reverse charging shortcut key on the UI of the first terminal, for example, as shown in FIG. 12 , clicks the “Wireless Reverse Charging” button on the UI; the first terminal detects the trigger operation on the UI, thereby starting the wireless charging state of the first terminal.
步骤52：发射第一脉冲信号，以检测所述第一终端的预定范围内是否存在异物；Step 52: transmitting a first pulse signal to detect whether there is a foreign object within a predetermined range of the first terminal;
此处的第一脉冲信号，为短脉冲无线信号。The first pulse signal here is a short pulse wireless signal.
在一可选实施例中，所述第一终端发射第一脉冲的无线充电信号；所述Q值检测模组，获取所述线圈发射第一脉冲信号的放电参数，基于所述放电参数确定第一Q值；并基于所述第一Q值，确定所述第一终端的预定范围内是否存在干扰无线充电信号的异物。In an optional embodiment, the first terminal transmits a first pulse wireless charging signal; the Q value detection module obtains discharge parameters of the coil transmitting the first pulse signal, and determines a first Q value based on the discharge parameters; and based on the first Q value, determines whether there is a foreign object that interferes with the wireless charging signal within a predetermined range of the first terminal.
例如，若所述第一Q值小于或等于设定的阈值，确定所述第一终端的预定范围内存在所述异物；响应于所述第一终端的预定范围内存在异物，确定所述第一终端继续发射所述第一脉冲信号。For example, if the first Q value is less than or equal to a set threshold, it is determined that the foreign object exists within a predetermined range of the first terminal; in response to the presence of a foreign object within the predetermined range of the first terminal, it is determined that the first terminal continues to transmit the first pulse signal.
又如，若所述第一Q值大于所述阈值，确定所述第一终端的预定范围内不存在干扰无线充电的异物；响应于所述第一终端的预定范围内不存在干扰无线充电的异物，确定所述第一终端转换发射第二脉冲信号。For another example, if the first Q value is greater than the threshold, it is determined that there is no foreign object interfering with wireless charging within a predetermined range of the first terminal; in response to the fact that there is no foreign object interfering with wireless charging within the predetermined range of the first terminal, it is determined that the first terminal switches to transmitting a second pulse signal.
此处的所述第二脉冲信号，为长脉冲无线信号。The second pulse signal here is a long pulse wireless signal.
这里，所述第二脉冲信号的周期大于所述第一脉冲信号的周期。Here, a period of the second pulse signal is greater than a period of the first pulse signal.
步骤S53：发射第二脉冲信号，以检测所述第一终端与所述第二终端之间是否存在异物。Step S53: transmitting a second pulse signal to detect whether there is a foreign object between the first terminal and the second terminal.
在一可选实施例中，所述第一终端发射第二脉冲信号，若接收到所述第二终端基于所述第二脉冲信号返回的参考Q值，所述Q值检测模组，获取所述第一脉冲信号的放电参数，基于所述放电参数确定第二Q值；基于所述第二Q值与所述参考Q值，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。In an optional embodiment, the first terminal transmits a second pulse signal. If a reference Q value returned by the second terminal based on the second pulse signal is received, the Q value detection module obtains the discharge parameters of the first pulse signal, and determines the second Q value based on the discharge parameters; based on the second Q value and the reference Q value, it is determined whether there is foreign matter that interferes with wireless charging between the first terminal and the second terminal.
此处的第二终端为满足第一类充电协议的终端，所述第一充电协议的终端，支持发送参考Q值。The second terminal here is a terminal that meets the first type of charging protocol, and the terminal of the first charging protocol supports sending a reference Q value.
例如，若所述第二Q值大于或等于预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间不存在干扰无线充电的异物；响应于所述第一终端与所述第二终端之间不存在所述异物，确定所述第一终端进入功率传输阶段；其中，在所述功率传输阶段，所述第一终端向所述第二终端发射无线充电信号，以用于给所述第二终端供电。For example, if the second Q value is greater than or equal to a predetermined multiple of the reference Q value, it is determined that there is no foreign object interfering with wireless charging between the first terminal and the second terminal; in response to the absence of the foreign object between the first terminal and the second terminal, it is determined that the first terminal enters the power transmission stage; wherein, in the power transmission stage, the first terminal transmits a wireless charging signal to the second terminal for powering the second terminal.
又如，若所述第二Q值小于所述预定倍数的所述参考Q值，确定所述第一终端与所述第二终端之间存在干扰无线充电的异物；响应于所述第一终端与所述第二终端之间不存在所述异物，确定所述第一终端重新发送第一脉冲信号，并停止Q值的检测。For another example, if the second Q value is less than the predetermined multiple of the reference Q value, it is determined that there is a foreign object interfering with wireless charging between the first terminal and the second terminal; in response to the absence of the foreign object between the first terminal and the second terminal, it is determined that the first terminal resends the first pulse signal and stops detecting the Q value.
这里，若所述第一终端与所述第二终端之间的异物移出，所述第一终端的所述Q值检测模组继续进行Q值的检测。Here, if the foreign object between the first terminal and the second terminal is removed, the Q value detection module of the first terminal continues to detect the Q value.
在另一可选实施例中，所述第一终端发射第二脉冲信号，若未接收到所述第二终端基于所述第二脉冲信号返回的参考Q值，获取所述第一终端的发送功率以及第二终端的接收功率；基于所述发送功率及所述接收功率，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物。In another optional embodiment, the first terminal transmits a second pulse signal, and if the reference Q value returned by the second terminal based on the second pulse signal is not received, the first terminal obtains the transmission power of the first terminal and the reception power of the second terminal; based on the transmission power and the reception power, it is determined whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal.
这里，通过发送功率及接收功率，确定所述第一终端与所述第二终端之间是否存在干扰无线充电的异物，是在所述第一终端进入功率传输阶段进行的。Here, determining whether there is a foreign object that interferes with wireless charging between the first terminal and the second terminal by sending power and receiving power is performed when the first terminal enters the power transmission stage.
例如，若所述发送功率及所述接收功率的差值，大于或等于预定损耗功率，确定所述第一终端与所述第二终端之间存在所述异物。For example, if the difference between the transmission power and the reception power is greater than or equal to the predetermined power loss, it is determined that the foreign object exists between the first terminal and the second terminal.
又如，若所述发送功率及所述接收功率的差值，小于所述预定损耗功率，确定所述第一终端与所述第二终端之间不存在所述异物。For another example, if the difference between the transmission power and the reception power is less than the predetermined power loss, it is determined that the foreign object does not exist between the first terminal and the second terminal.
在本公开实施例中，可以基于Q值检测模组之间检测线圈上的放电参数获得Q值，从而提高了Q值的检测准确性。In the disclosed embodiment, the Q value may be obtained based on the discharge parameters on the detection coils between the Q value detection modules, thereby improving the detection accuracy of the Q value.
在本公开实施例中，由于提高了Q值检测的准确性，从而大大降低了由于检测Q值不准确而导致的存在干扰无线充电的误判，大大降低了实际存在异物而误判不存在异物导致的无线充电的危险，提高了无线充电的安全性。In the embodiments of the present disclosure, since the accuracy of Q value detection is improved, the misjudgment of the presence of interference with wireless charging due to inaccurate Q value detection is greatly reduced, the risk of wireless charging caused by misjudging the absence of foreign objects when there are actually foreign objects is greatly reduced, and the safety of wireless charging is improved.
在本公开实施例中，还可以通过第二终端，及无线充电的接收设备，上报的参考Q值，来进一步准确判断出所述第一终端和所述第二终端是否存在干扰无线充电的异物。或者，若第二终端无法上报参考Q值，或由于其它原因导致所述第一终端没有接收到第二终端上报的参考Q值时，还可以在功率传输阶段，基于功率损耗检测异物的方式进行异物的检测，从而能够全方面的检测所述第一终端和所述第二终端之间是否存在所述异物。In the disclosed embodiment, the reference Q value reported by the second terminal and the wireless charging receiving device can be used to further accurately determine whether there are foreign objects that interfere with wireless charging between the first terminal and the second terminal. Alternatively, if the second terminal cannot report the reference Q value, or the first terminal does not receive the reference Q value reported by the second terminal due to other reasons, the foreign object detection method based on power loss detection can be used during the power transmission stage, so as to fully detect whether there is the foreign object between the first terminal and the second terminal.
本公开实施例还提供一种终端，包括：The present disclosure also provides a terminal, including:
用于存储处理器可执行指令的存储器；a memory for storing processor-executable instructions;
其中，所述处理器被配置为：用于执行所述可执行指令时，实现本公开任意实施例所述的无线充电方法。Wherein, the processor is configured to: implement the wireless charging method described in any embodiment of the present disclosure when executing the executable instructions.
所述存储器可包括各种类型的存储介质，该存储介质为非临时性计算机存储介质，在通信设备掉电之后能够继续记忆存储其上的信息。The memory may include various types of storage media, which are non-transitory computer storage media that can continue to memorize information stored thereon after the communication device loses power.
所述处理器可以通过总线等与存储器连接，用于读取存储器上存储的可执行程序，例如，实现如图7-图11所示的方法的至少其中之一。The processor may be connected to the memory via a bus or the like, and is used to read an executable program stored in the memory, for example, to implement at least one of the methods shown in FIG. 7 to FIG. 11 .
图13是根据一示例性实施例示出的一种包括无线充电装置的终端800的框图。例如，终端800可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。13 is a block diagram of a terminal 800 including a wireless charging device according to an exemplary embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
参照图13，终端800可以包括以下一个或多个组件：处理组件802，存储器804，电力组件806，多媒体组件808，音频组件810，输入/输出(I/O)的接口812，传感器组件814，以及通信组件816。13 , the terminal 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input/output (I/O) interface 812 , a sensor component 814 , and a communication component 816 .
处理组件802通常控制终端800的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。The processing component 802 generally controls the overall operation of the terminal 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.
存储器804被配置为存储各种类型的数据以支持在设备800的操作。这些数据的示例包括用于在终端800上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the terminal 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
电力组件806为终端800的各种组件提供电力。电力组件806可以包括电源管理系统，一个或多个电源，及其他与为终端800生成、管理和分配电力相关联的组件。Power component 806 provides power to various components of terminal 800. Power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.
多媒体组件808包括在所述终端800和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件808包括一个前置摄像头和/或后置摄像头。当设备800处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。The multimedia component 808 includes a screen that provides an output interface between the terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
音频组件810被配置为输出和/或输入音频信号。例如，音频组件810包括一个麦克风(MIC)，当终端800处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the terminal 800 is in an operation mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.
I/O接口812为处理组件802和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。I/O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
传感器组件814包括一个或多个传感器，用于为终端800提供各个方面的状态评估。例如，传感器组件814可以检测到设备800的打开/关闭状态，组件的相对定位，例如所述组件为终端800的显示器和小键盘，传感器组件814还可以检测终端800或终端800一个组件的位置改变，用户与终端800接触的存在或不存在，终端800方位或加速/减速和终端800的温度变化。传感器组件814可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件814还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the terminal 800. For example, the sensor assembly 814 can detect the open/closed state of the device 800, the relative positioning of the components, such as the display and keypad of the terminal 800, and the sensor assembly 814 can also detect the position change of the terminal 800 or a component of the terminal 800, the presence or absence of contact between the user and the terminal 800, the orientation or acceleration/deceleration of the terminal 800 and the temperature change of the terminal 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
通信组件816被配置为便于终端800和其他设备之间有线或无线方式的通信。终端800可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件816还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。The communication component 816 is configured to facilitate wired or wireless communication between the terminal 800 and other devices. The terminal 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
在示例性实施例中，终端800可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。In an exemplary embodiment, terminal 800 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above methods.
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器804，上述指令可由终端800的处理器820执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of the terminal 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.
本公开的实施例还提供了一种计算机可读存储介质，所述可读存储介质存储有可执行程序，其中，所述可执行程序被处理器执行时实现本公开任意实施例所述的无线充电方法。例如，实现如图7-图11所示的方法的至少其中之一。The embodiments of the present disclosure further provide a computer-readable storage medium, wherein the computer-readable storage medium stores an executable program, wherein the executable program, when executed by a processor, implements the wireless charging method described in any embodiment of the present disclosure, for example, implementing at least one of the methods shown in FIG. 7 to FIG. 11 .
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010706519.7ACN113972703B (en) | 2020-07-21 | 2020-07-21 | Wireless charging method, device, terminal and storage medium |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010706519.7ACN113972703B (en) | 2020-07-21 | 2020-07-21 | Wireless charging method, device, terminal and storage medium |
| Publication Number | Publication Date |
|---|---|
| CN113972703A CN113972703A (en) | 2022-01-25 |
| CN113972703Btrue CN113972703B (en) | 2024-07-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010706519.7AActiveCN113972703B (en) | 2020-07-21 | 2020-07-21 | Wireless charging method, device, terminal and storage medium |
| Country | Link |
|---|---|
| CN (1) | CN113972703B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825653A (en)* | 2021-06-21 | 2022-07-29 | 长城汽车股份有限公司 | Wireless charging control method, control device and vehicle |
| CN115296448B (en)* | 2022-10-09 | 2023-02-28 | 深圳英集芯科技股份有限公司 | Control method for automatic alignment of wireless charging coil and electronic equipment |
| CN117129763A (en)* | 2023-04-24 | 2023-11-28 | 荣耀终端有限公司 | Stylus offset detection method and electronic device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211598A (en)* | 2020-02-12 | 2020-05-29 | 华为技术有限公司 | Wireless charging circuit, wireless charging method, wireless charging equipment and wireless charging system |
| CN111208357A (en)* | 2020-02-17 | 2020-05-29 | 珠海智融科技有限公司 | Q value detection circuit and working method thereof |
| CN111381107A (en)* | 2020-06-01 | 2020-07-07 | 成都市易冲半导体有限公司 | Wireless charging high-precision Q value detection method and circuit |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6019581B2 (en)* | 2011-12-26 | 2016-11-02 | ソニー株式会社 | Detection device, detection system, power transmission device, non-contact power transmission system, and detection method |
| US9178361B2 (en)* | 2012-09-27 | 2015-11-03 | ConvenientPower, Ltd. | Methods and systems for detecting foreign objects in a wireless charging system |
| US11070095B2 (en)* | 2016-07-01 | 2021-07-20 | Lg Innotek Co., Ltd. | Method for detecting foreign material, and device and system therefor |
| CN106685029A (en)* | 2017-01-11 | 2017-05-17 | 天地（常州）自动化股份有限公司 | Wireless charging device and metal foreign substance detection method thereof |
| CN107947395B (en)* | 2017-11-10 | 2020-09-01 | 维沃移动通信有限公司 | Detection method for metal foreign matter and wireless charger |
| CN207705830U (en)* | 2017-12-15 | 2018-08-07 | 北京联盛德微电子有限责任公司 | A kind of wireless charging device of holding load identification |
| CN107947286A (en)* | 2017-12-15 | 2018-04-20 | 北京联盛德微电子有限责任公司 | A kind of wireless charging device of holding load identification and its recognition methods |
| CN108923552A (en)* | 2018-07-27 | 2018-11-30 | 浙江泰米电子科技有限公司 | A kind of wireless charging foreign bodies detection circuit and method |
| CN109167421A (en)* | 2018-11-07 | 2019-01-08 | 天合汽车零部件（苏州）有限公司 | A kind of vehicle-mounted wireless charging device based on touch function |
| KR20200056618A (en)* | 2018-11-15 | 2020-05-25 | 엘지전자 주식회사 | Wireless charger |
| CN111313569A (en)* | 2018-12-11 | 2020-06-19 | 恩智浦美国有限公司 | Q Factor Determination of Foreign Object Detection Circuit in Wireless Charging System |
| JP2019097383A (en)* | 2019-01-09 | 2019-06-20 | ソニー株式会社 | Power reception device and power transmission system |
| KR102625272B1 (en)* | 2019-01-14 | 2024-01-12 | 엘지전자 주식회사 | Wireless power transfer appratus |
| CN110492625B (en)* | 2019-08-05 | 2023-08-01 | Oppo广东移动通信有限公司 | Wireless charging foreign object detection method and device, electronic equipment, storage medium |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211598A (en)* | 2020-02-12 | 2020-05-29 | 华为技术有限公司 | Wireless charging circuit, wireless charging method, wireless charging equipment and wireless charging system |
| CN111208357A (en)* | 2020-02-17 | 2020-05-29 | 珠海智融科技有限公司 | Q value detection circuit and working method thereof |
| CN111381107A (en)* | 2020-06-01 | 2020-07-07 | 成都市易冲半导体有限公司 | Wireless charging high-precision Q value detection method and circuit |
| Publication number | Publication date |
|---|---|
| CN113972703A (en) | 2022-01-25 |
| Publication | Publication Date | Title |
|---|---|---|
| CN113972703B (en) | Wireless charging method, device, terminal and storage medium | |
| KR102337009B1 (en) | Wireless charging method and terminal | |
| EP3910354B1 (en) | Power supply on-off detection circuit, method, apparatus and storage medium | |
| WO2017071093A1 (en) | Electronic device control method and apparatus | |
| CN105433904A (en) | Sleep state detection method, device and system | |
| CN106712219A (en) | Charging protection method and device | |
| CN104320542A (en) | Method and device for sending reminding message | |
| CN110875769A (en) | Wireless communication device and antenna switching method | |
| CN107942148A (en) | antenna detection method, device and terminal | |
| CN106572268A (en) | Information display method and device | |
| CN106325454B (en) | Power supply control device and method and electronic equipment | |
| CN109818433A (en) | Wireless charging system and charging alignment method, device and storage medium | |
| US11205906B2 (en) | Charging processing method, terminal device and storage medium | |
| CN106374565A (en) | Control method, device and system for wireless power supply | |
| CN105954706A (en) | Intelligent device positioning method and device | |
| CN105389225A (en) | Touch screen reporting point processing method and apparatus | |
| CN114552683B (en) | Detection circuit, wireless charging device, terminal equipment, control method and device | |
| CN106774802A (en) | The reminding method of terminal power, device and terminal | |
| JP2017524215A (en) | Message transmission method, apparatus, program, and recording medium | |
| CN113972728B (en) | A wireless charging method, device, terminal and storage medium | |
| CN114614518A (en) | Charging control method and device, electronic device and storage medium | |
| CN112565521B (en) | Information processing method, device, terminal and storage medium | |
| CN115118805B (en) | Test equipment, method, device and storage medium | |
| CN105554715A (en) | Method, device and system for intercepting junk information | |
| US11079210B2 (en) | Sensing distance to terminal |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |