CN110879361A - A method, device and electronic device for estimating remaining power of a battery - Google Patents
A method, device and electronic device for estimating remaining power of a batteryDownload PDFInfo
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Abstract
Description
Translated fromChinese技术领域technical field
本申请实施例涉及充放电技术领域，具体涉及一种电池的剩余电量的估计方法、装置和电子设备。The embodiments of the present application relate to the technical field of charging and discharging, and in particular, to a method, apparatus, and electronic device for estimating the remaining power of a battery.
背景技术Background technique
目前常见的电量估计算法包括电荷累计法与开路电压法。电荷累积法实现简单，但是容易积累误差；开路电压法对电池电量的判断比较准确，但条件限制比较多。At present, the common power estimation algorithms include charge accumulation method and open circuit voltage method. The charge accumulation method is simple to implement, but it is easy to accumulate errors; the open-circuit voltage method is more accurate in judging the battery power, but there are many conditions.
针对石墨型负极锂离子电池来说，将这两种方法进行结合可以降低一定的误差，但是对于混合石墨和硅负极材料的电池来说，石墨负极和硅负极在充放电循环过程中老化衰减的速度不一致，从而导致电池的性能老化也不一致。若对于老化后的电池继续以电池的开路电压-剩余电量的第一次充放电曲线关系图来进行剩余电量的估计，其结果会出现大幅度误差的情况，从而导致估计的电池的剩余电量不准确。For graphite-type anode lithium-ion batteries, combining these two methods can reduce certain errors, but for batteries with mixed graphite and silicon anode materials, the graphite anode and silicon anode deteriorate during charge-discharge cycles. Inconsistent speeds, resulting in inconsistent battery performance aging. If the battery's open-circuit voltage - the first charge-discharge curve relationship between the battery's open-circuit voltage and the remaining capacity continues to be used to estimate the remaining capacity of the aged battery, a large error will occur in the result, resulting in the estimated remaining capacity of the battery being inaccurate. precise.
发明内容SUMMARY OF THE INVENTION
本申请提供一种电池的剩余电量的估计方法、装置和电子设备，可以减小对电子设备的电池电量估计的误差，从而可以提高对电池的剩余电量的估计的准确性。The present application provides a method, apparatus and electronic device for estimating the remaining power of a battery, which can reduce the error of estimating the battery power of the electronic device, thereby improving the accuracy of estimating the remaining power of the battery.
第一方面，提供一种电池的剩余电量的估计方法，所述方法应用于含硅基极材料负极的锂离子电池，所述方法包括：在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系；根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。In a first aspect, a method for estimating the remaining capacity of a battery is provided, the method is applied to a lithium-ion battery containing a negative electrode of a silicon base material, and the method includes: during use of the battery, from a preset open circuit The target correspondence that matches the current number of charge-discharge cycles of the battery is selected from the correspondence between voltage and remaining power; the current remaining power of the battery is determined according to the current open circuit voltage of the battery and in combination with the target correspondence.
第二方面，提供一种电池的剩余电量的估计装置，所述装置应用于含硅基极材料负极的锂离子电池，所述装置包括：选择单元，用于在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系；确定单元，用于根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。In a second aspect, a device for estimating the remaining power of a battery is provided. The device is applied to a lithium-ion battery containing a negative electrode of a silicon base material. The device includes: a selection unit for, during use of the battery, From the preset open-circuit voltage-remaining power correspondence, select a target correspondence that matches the current number of charge-discharge cycles of the battery; a determining unit is configured to combine the target correspondence according to the current open-circuit voltage of the battery The relationship determines the current remaining charge of the battery.
第三方面，提供一种电子设备，所述电子设备包括含硅基极材料负极的锂离子电池，所述电子设备包括：处理器，用于在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系；根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。In a third aspect, an electronic device is provided, the electronic device includes a lithium-ion battery with a negative electrode containing a silicon base material, the electronic device includes: a processor for, during use of the battery, from a preset Selecting a target correspondence that matches the current number of charge-discharge cycles of the battery from the open-circuit voltage-remaining power correspondence; determining the current remaining power of the battery according to the battery's current open-circuit voltage and in combination with the target correspondence .
第四方面，提供一种计算机可读存储介质，用于存储计算机程序，所述计算机程序使得计算机执行上述第一方面或其各实现方式中任一项所述的方法。In a fourth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to execute the method described in any one of the above-mentioned first aspect or its implementation manners.
第五方面，提供一种计算机程序产品，其特征在于，包括计算机程序指令，该计算机程序指令使得计算机执行上述第一方面或其各实现方式中任一项所述的方法。In a fifth aspect, a computer program product is provided, which is characterized in that it includes computer program instructions, the computer program instructions cause a computer to execute the method described in any one of the above-mentioned first aspect or its implementation manners.
本申请实施例提供的电池的剩余电量的估计方法，由于在确定电池当前的剩余电量前，先确定与该电池当前充放电循环次数相匹配的开路电压-剩余电量的对应关系，再基于确定的目标对应关系确定电池当前的剩余电量，可以减小对电子设备的电池电量估计的误差，从而可以提高对电池的剩余电量的估计的准确性。In the method for estimating the remaining power of the battery provided by the embodiment of the present application, before determining the current remaining power of the battery, the corresponding relationship between the open circuit voltage and the remaining power that matches the current number of charge and discharge cycles of the battery is determined, and then based on the determined The target correspondence determines the current remaining power of the battery, which can reduce the error in estimating the battery power of the electronic device, thereby improving the accuracy of estimating the remaining power of the battery.
附图说明Description of drawings
图1是本申请实施例提供的含硅负极电池在首次与老化500次后的开路电压-剩余电量的曲线关系图；FIG. 1 is a graph showing the relationship between the open circuit voltage and the remaining power of the silicon-containing negative electrode battery provided by the embodiment of the present application after being aged for the first time and after 500 times of aging;
图2是本申请一实施例提供的电池的剩余电量的估计方法；FIG. 2 is a method for estimating the remaining power of a battery provided by an embodiment of the present application;
图3是本申请另一实施例提供的电池的剩余电量的估计方法；FIG. 3 is a method for estimating the remaining power of a battery provided by another embodiment of the present application;
图4是本申请一实施例提供的电池的剩余电量的估计装置；FIG. 4 is a device for estimating the remaining power of a battery provided by an embodiment of the present application;
图5是本申请一实施例提供的电子设备；5 is an electronic device provided by an embodiment of the present application;
图6是本申请一个实施例提供的有线充电系统的示意结构图；6 is a schematic structural diagram of a wired charging system provided by an embodiment of the present application;
图7是本申请另一个实施例提供的有线充电系统的示意结构图；FIG. 7 is a schematic structural diagram of a wired charging system provided by another embodiment of the present application;
图8是本申请一个实施例提供的无线充电系统的示意性结构图；FIG. 8 is a schematic structural diagram of a wireless charging system provided by an embodiment of the present application;
图9是本申请另一实施例提供的无线充电系统的示意性结构图；FIG. 9 is a schematic structural diagram of a wireless charging system provided by another embodiment of the present application;
图10是本申请又一实施例提供的无线充电系统的示意性结构图；FIG. 10 is a schematic structural diagram of a wireless charging system provided by another embodiment of the present application;
图11是本申请再一实施例提供的无线充电系统的示意性结构图。FIG. 11 is a schematic structural diagram of a wireless charging system provided by yet another embodiment of the present application.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
为了更加清楚地理解本申请，以下将介绍几种电量估计算法，便于后续理解本申请的方案。但应理解，以下介绍的内容仅仅是为了更好的理解本申请，不应对本申请造成特别限定。In order to understand the present application more clearly, several power estimation algorithms will be introduced below to facilitate the subsequent understanding of the solution of the present application. However, it should be understood that the content introduced below is only for a better understanding of the present application, and should not be specifically limited to the present application.
目前常见的电量估计算法包括电荷累计法(也可以称为安时积分法)与开路电压法。电荷累计法，即实时测量电池的主回路电流，并将其对时间进行积分，充电过程为负，放电过程为正。放电过程，用初始电量减去电流对时间的积分结果，得到当前电量；充电过程，用初始电量加上电流对时间的积分结果，得到当前电量。这种方法比较简单，但是这种方法，由于系统电流的波动性很大，而电流采样是间隔一段时间进行一次采样，从而采样值与一段时间的平均值并不一定近似，长时间的累积造成比较明显的误差，并且误差不是电荷累计法自己能够消除的。因此，电荷累计法的实际应用必须与其他方法相结合，解决初值和累积误差的问题。At present, the common power estimation algorithms include the charge accumulation method (also known as the ampere-hour integration method) and the open-circuit voltage method. The charge accumulation method is to measure the main circuit current of the battery in real time and integrate it with time. The charging process is negative and the discharging process is positive. In the discharging process, the current electric quantity is obtained by subtracting the integral result of current against time from the initial electric quantity; in the charging process, the current electric quantity is obtained by adding the initial electric quantity and the integral result of current versus time. This method is relatively simple, but in this method, due to the large fluctuation of the system current, and the current sampling is performed at intervals of a period of time, the sampling value is not necessarily similar to the average value of a period of time, and the long-term accumulation causes The error is relatively obvious, and the error cannot be eliminated by the charge accumulation method itself. Therefore, the practical application of the charge accumulation method must be combined with other methods to solve the problems of initial value and accumulated error.
开路电压法，利用电池的开路电压(Open Circuit Voltage，OCV)与电池的荷电状态(State Of Charge，SOC)(也可以称为荷电量或剩余电量)有明确单调的对应关系，若获得准确的开路电压就可以推算出电池电量。因此可以离线测量得到不同温度下不同SOC下的开路电压值，形成表格。电池在被安装到设备中后，每当出现停止供电状态，就可以调用表格数据，根据测量得到的开路电压判断电池荷电状态。这种方法对电池电量的判断比较准确，但条件限制比较多，即必须在回路断开的情况下且电池静置一段时间后，这个要求使得在线测量不可能实现。The open circuit voltage method uses the open circuit voltage (OCV) of the battery to have a clear and monotonic correspondence with the state of charge (SOC) of the battery (also known as the amount of charge or remaining power). The open circuit voltage of the battery can be calculated. Therefore, the open circuit voltage values under different SOCs at different temperatures can be obtained offline, and a table is formed. After the battery is installed in the device, whenever the power supply is stopped, the table data can be called, and the state of charge of the battery can be judged according to the measured open-circuit voltage. This method is more accurate in judging the battery power, but there are many conditions, that is, the circuit must be disconnected and the battery must be left for a period of time, this requirement makes online measurement impossible.
目前也有将开路电压法和安时积分法结合在一起预计电池的电量，具体的，先应用安时积分法不断更新实时的电量情况，然后再在相对静止的时候读取电池的开路电压，利用开路电压与剩余电量的对应关系，对剩余电量进行更新。At present, the open-circuit voltage method and the ampere-hour integration method are combined to estimate the battery power. Specifically, the ampere-hour integration method is used to continuously update the real-time power status, and then the open-circuit voltage of the battery is read when it is relatively static. The corresponding relationship between the open circuit voltage and the remaining power, and the remaining power is updated.
然而这样的方式针对石墨型负极锂离子电池来说，可以降低一定的误差。硅负极锂离子电池的理论容量远远大于石墨，因此目前有越来越多的硅负极锂离子电池得以应用，从而可以有效地提升锂离子电池的能量密度。但是由于硅负极材料在充放电过程中会出现膨胀问题，因此，目前大部分都是将石墨和硅混合作为负极进行使用。However, this method can reduce certain errors for graphite-type negative electrode lithium-ion batteries. The theoretical capacity of lithium-ion batteries with silicon anodes is much larger than that of graphite, so more and more lithium-ion batteries with silicon anodes are currently being used, which can effectively improve the energy density of lithium-ion batteries. However, due to the expansion problem of silicon anode materials during the charging and discharging process, most of them are currently mixed with graphite and silicon as the anode.
虽然将石墨和硅混合作为负极进行使用可以提升能量密度，可由此带来的问题是，石墨负极和硅负极在充放电循环过程中老化衰减的速度不一致，从而导致电池的老化性能也不一致，最终出现含硅负极的锂离子电池的OCV-SOC曲线随着老化等使用环境变化而不同，如图1所示为含硅负极电池在首次与老化500次后的OCV-SOC的曲线关系图。Although the use of graphite and silicon as a negative electrode can improve the energy density, the problem is that the aging and decay rates of the graphite negative electrode and the silicon negative electrode during the charge-discharge cycle are inconsistent, resulting in inconsistent aging performance of the battery. The OCV-SOC curve of a lithium-ion battery with a silicon-containing negative electrode varies with the use of the environment such as aging. Figure 1 shows the relationship between the OCV-SOC curve of the silicon-containing negative electrode battery for the first time and after 500 times of aging.
从图1中可以看出，如果使用OCV-SOC曲线关系图来进行剩余电量的估计会出现老化后结果出现大幅度误差的情况，从而导致估计的电池电量不准确。As can be seen from Figure 1, if the OCV-SOC curve relationship is used to estimate the remaining power, there will be a large error in the results after aging, resulting in inaccurate estimated battery power.
因此，本申请实施例提供一种电池的剩余电量的估计方法，可以减小对电子设备的电池电量估计的误差，使得对电池的电量估计更加准确。Therefore, the embodiments of the present application provide a method for estimating the remaining power of the battery, which can reduce the error of estimating the battery power of the electronic device, and make the estimation of the battery power more accurate.
本申请实施例可以应用于充电设备或电子设备，本申请实施例中的充电设备或电子设备可以是指终端，该“终端”可包括但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal CommunicationSystem，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的个人数字助理(Personal DigitalAssistant，PDA)；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。在某些实施例中，电子设备可指移动终端是设备或手持终端设备，如手机、pad等。在某些实施例中，本申请实施例提及的电子设备可以是指芯片系统，在该实施例中，电子设备的电池可以属于或也可以不属于该芯片系统。The embodiments of the present application may be applied to charging equipment or electronic equipment. The charging equipment or electronic equipment in the embodiments of the present application may refer to terminals, and the "terminal" may include, but is not limited to, satellite or cellular phones; cellular radio phones may be combined with data Personal Communication System (PCS) terminals with processing, facsimile, and data communication capabilities; may include radiotelephones, pagers, Internet/Intranet access, Web browsers, memo pads, calendars, and/or Global Positioning Systems System, GPS) receivers Personal Digital Assistants (PDAs); and conventional laptop and/or palm receivers or other electronic devices including radiotelephone transceivers. In some embodiments, the electronic device may refer to a mobile terminal as a device or a handheld terminal device, such as a mobile phone, a pad, and the like. In some embodiments, the electronic device mentioned in the embodiments of the present application may refer to a chip system, and in this embodiment, the battery of the electronic device may or may not belong to the chip system.
另外，充电设备或电子设备还可以包括其他有充电需求的设备，例如手机、移动电源(如充电宝、旅充等)、电动汽车、笔记本电脑、无人机、平板电脑、电子书、电子烟、智能电子设备和小型电子产品等。智能电子设备例如可以包括手表、手环、智能眼镜和扫地机器人等。小型电子产品例如可以包括无线耳机、蓝牙音响、电动牙刷和可充电无线鼠标等。In addition, charging devices or electronic devices may also include other devices that require charging, such as mobile phones, mobile power sources (such as power banks, travel chargers, etc.), electric vehicles, laptops, drones, tablet computers, e-books, and electronic cigarettes , smart electronic devices and small electronic products, etc. Smart electronic devices may include, for example, watches, wristbands, smart glasses, and cleaning robots. Small electronic products may include, for example, wireless earphones, Bluetooth speakers, electric toothbrushes, and rechargeable wireless mice.
下面结合图2，对本申请实施例提供的电池的剩余电量的估计方法进行详细说明。The method for estimating the remaining power of the battery provided by the embodiment of the present application will be described in detail below with reference to FIG. 2 .
如图2所示为本申请实施例提供的电池的剩余电量估计的方法200，该方法200应用于含硅基极材料负极的锂离子电池，该方法200可以包括步骤210-220。FIG. 2 shows a
210，在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系。210. In the process of using the battery, select a target corresponding relationship that matches the current number of charge-discharge cycles of the battery from a preset open-circuit voltage-remaining power corresponding relationship.
本申请实施例中，预设的开路电压-剩余电量的对应关系可以包括电池的多次充放电循环次数的对应关系。例如，可以包括电池的500次的每一次的充放电循环下所对应的开路电压-剩余电量的对应关系。In this embodiment of the present application, the preset open-circuit voltage-remaining power corresponding relationship may include a corresponding relationship between the number of times of charging and discharging cycles of the battery. For example, the corresponding relationship between the open circuit voltage and the remaining capacity of the battery under each of the 500 charge-discharge cycles of the battery may be included.
具体地，在使用电池的过程中，若该电池的当前充放电循环次数是第1次，可以从预设的第1次充放电的开路电压-剩余电量的对应关系中选择目标对应关系；若该电池的当前充放电循环次数是第10次，可以从预设的第10次充放电的开路电压-剩余电量的对应关系中选择目标对应关系。Specifically, in the process of using the battery, if the current number of charge-discharge cycles of the battery is the first time, the target correspondence can be selected from the preset corresponding relationship between the open-circuit voltage and the remaining power of the first charge-discharge; The current number of charge-discharge cycles of the battery is the 10th, and the target correspondence can be selected from the preset correspondence between the open-circuit voltage of the 10th charge-discharge and the remaining power.
220，根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。220. Determine the current remaining power of the battery according to the current open circuit voltage of the battery and in combination with the target correspondence.
本申请实施例中，在选择与电池当前的充放电循环次数相匹配的目标对应关系后，可以根据电池当前的开路电压以及选择的目标对应关系确定电池当前的剩余电量。例如，可以在对电池充放电一段时间后，确定电池当前的开路电压，结合所选择的目标对应关系确定电池当前的剩余电量。In the embodiment of the present application, after selecting a target correspondence that matches the current number of charge-discharge cycles of the battery, the current remaining power of the battery can be determined according to the current open circuit voltage of the battery and the selected target correspondence. For example, after charging and discharging the battery for a period of time, the current open circuit voltage of the battery can be determined, and the current remaining power of the battery can be determined in combination with the selected target correspondence.
本申请实施例提供的电池的剩余电量的估计方法，由于在确定电池当前的剩余电量前，先确定与该电池的当前充放电循环次数相匹配的开路电压-剩余电量的对应关系，再基于确定的目标对应关系确定电池当前的剩余电量，可以减小对电子设备的电池的剩余电量估计的误差，从而可以提高对电池的剩余电量的估计的准确性。In the method for estimating the remaining power of the battery provided by the embodiment of the present application, before determining the current remaining power of the battery, the corresponding relationship between the open circuit voltage and the remaining power that matches the current number of charge and discharge cycles of the battery is determined, and then based on the determination The target correspondence relationship of , determines the current remaining power of the battery, which can reduce the error of estimating the remaining power of the battery of the electronic device, thereby improving the accuracy of estimating the remaining power of the battery.
可选地，在一些实施例中，所述根据所述电池当前的开路电压，结合所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量，包括：根据所述当前的开路电压，结合所述目标对应关系，利用安时积分法和/或开路电压法，确定所述电池当前的剩余电量。Optionally, in some embodiments, the determining the current remaining power of the battery according to the current open circuit voltage of the battery, in combination with the current open circuit voltage of the battery, and in combination with the target correspondence, includes: according to the The current open circuit voltage, combined with the target corresponding relationship, uses the ampere-hour integration method and/or the open circuit voltage method to determine the current remaining power of the battery.
本申请实施例中，可以利用安时积分法和/或开路电压法，结合所选择的目标对应关系，确定电池当前的剩余电量。例如，可以先对电池充放电一段时间后且当电池处于静置状态时，获取电池的当前开路电压，再结合所确定的目标对应关系，确定当前开路电压所对应的当前剩余电量。In the embodiment of the present application, the ampere-hour integration method and/or the open-circuit voltage method may be used to determine the current remaining power of the battery in combination with the selected target correspondence. For example, after charging and discharging the battery for a period of time and when the battery is in a stationary state, the current open circuit voltage of the battery can be obtained, and then combined with the determined target correspondence, the current remaining power corresponding to the current open circuit voltage can be determined.
可选地，在一些实施例中，所述根据所述电池当前的开路电压，结合所述电池当前的开路电压，结合所述目标对应关系，利用安时积分法和开路电压法，确定所述电池当前的剩余电量，包括：当对所述电池进行充/放电第一时长时，获取当前预测电量，所述当前预测电量为
本申请实施例中，若电池的额定容量为5000mAh，电池的充放电循环次数是第一次，假设电池的初始开路电压为4.4V，初始电量为100％，以电流I1对电池进行放电一段时间，例如，以0.4C(即放电电流为2A)的放电倍率对电池放电15min，此时电池的剩余电量为
在确定对电池放电15min后的电池的电量后，可以继续以0.4C的放电倍率对电池放电15min，此时电池的剩余电量为
类似地，可以继续以相同间隔的时间，相同的计算方法确定电池在不同放电时长下的当前的剩余电量，直到将电池的电量放电完成。Similarly, the same calculation method may continue to determine the current remaining capacity of the battery under different discharge durations at the same interval until the battery is fully discharged.
应理解的是，上述过程中的数值仅为举例说明，还可以为其他数值，例如对电池放电的时长间隔，放电倍率，电池的额定容量等，本申请对此不作具体限定。It should be understood that the numerical values in the above process are only examples, and may also be other numerical values, such as the time interval for discharging the battery, the discharge rate, the rated capacity of the battery, etc., which are not specifically limited in this application.
可选地，在一些实施例中，所述静置状态包括以下状态中的至少一种：所述电池从所述第一时长的结束时刻开始算起往后的时长大于或等于第二时长，所述电池的持续电流小于或等于第一预设阈值，所述电池的电压对时间的导数小于或等于第二预设阈值。Optionally, in some embodiments, the resting state includes at least one of the following states: the duration of the battery from the end time of the first duration is greater than or equal to the second duration, The continuous current of the battery is less than or equal to the first preset threshold, and the derivative of the voltage of the battery with respect to time is less than or equal to the second preset threshold.
以电池从所述第一时长的结束时刻开始算起往后的时长大于或等于第三时长为例进行说明。若电池的额定容量为5000mAh，电池的充放电循环次数是第一次，假设电池的初始开路电压为4.4V，初始电量为100％，以电流I1对电池进行放电一段时间，例如，以0.4C(即放电电流为2A)的放电倍率对电池放电15min，此时电池的剩余电量为
类似地，在对电池放电15min后停止对电池进行放电，若电池的持续电流小于或等于第一预设阈值，例如，电池的电流小于或等于20mA，则可以获取电池的开路电压，结合所选择的开路电压-剩余电量的目标对应关系，确定电池当前的剩余电量。Similarly, stop discharging the battery after discharging the battery for 15 minutes. If the continuous current of the battery is less than or equal to the first preset threshold, for example, the current of the battery is less than or equal to 20mA, the open-circuit voltage of the battery can be obtained. Combined with the selected The target correspondence between the open-circuit voltage and the remaining charge determines the current remaining charge of the battery.
类似地，在对电池放电15min后停止对电池进行放电，若电池的电压对时间的导数小于与或等于第二预设阈值，例如，电池的电压对时间的导数小于与或等于5V/s，则可以获取电池的开路电压，再结合所选择的开路电压-剩余电量的目标对应关系，确定电池当前的剩余电量。Similarly, stop discharging the battery after discharging the battery for 15 minutes, if the derivative of the voltage of the battery with respect to time is less than or equal to the second preset threshold, for example, the derivative of the voltage of the battery with respect to time is less than or equal to 5V/s, Then, the open circuit voltage of the battery can be obtained, and then combined with the selected target correspondence relationship between the open circuit voltage and the remaining power, the current remaining power of the battery can be determined.
可选地，在一些实施例中，如图3所示，所述方法200还可以包括步骤230-240。Optionally, in some embodiments, as shown in FIG. 3 , the
230，获取所述目标对应关系下所述电池当前的剩余电量对应的当前开路电压。230. Acquire a current open circuit voltage corresponding to the current remaining power of the battery under the target corresponding relationship.
240，根据所述当前开路电压更新所述电池的内阻，所述内阻为R1＝(OCV1-U1)/I1，其中，OCV1表示所述当前开路电压，U1表示对所述电池在当前使用过程中的测量电压，I1表示对所述电池在当前使用过程中的测量电流。240. Update the internal resistance of the battery according to the current open circuit voltage, where the internal resistance is R1=(OCV1-U1)/I1, where OCV1 represents the current open circuit voltage, and U1 represents the current use of the battery The measured voltage in the process, I1 represents the measured current of the battery in the current use process.
本申请实施例中，在确定电池的当前的剩余电量后，基于所确定的目标对应关系获取与当前剩余电量对应的当前开路电压，再基于当前开路电压与测量电压和测量电流更新电池的内阻。In the embodiment of the present application, after the current remaining power of the battery is determined, the current open-circuit voltage corresponding to the current remaining power is obtained based on the determined target correspondence, and then the internal resistance of the battery is updated based on the current open-circuit voltage, the measured voltage and the measured current. .
具体地，假设电池的额定容量为5000mAh，当前剩余电量为60％，结合所选择的开路电压-剩余电量的目标对应关系，可以确定电池当前的开路电压。若所选择的开路电压-剩余电量的目标对应关系中与剩余电量为60％对应的开路电压为3.5V，则将3.5V作为电池当前的开路电压。通过获取电池的测量电压和测量电流，结合OCV＝U+I*R，可以更新电池的内阻。Specifically, assuming that the rated capacity of the battery is 5000mAh and the current remaining power is 60%, the current open-circuit voltage of the battery can be determined in combination with the selected target correspondence between the open circuit voltage and the remaining power. If the open-circuit voltage corresponding to 60% of the remaining power in the selected target correspondence relationship between the open-circuit voltage and the remaining power is 3.5V, then 3.5V is taken as the current open-circuit voltage of the battery. By obtaining the measured voltage and current of the battery, combined with OCV=U+I*R, the internal resistance of the battery can be updated.
在下一次使用电池的过程中，除了利用上述提到的安时积分法和开路电压法确定当前的剩余电量法，还可以利用下文所介绍的方法确定，具体参见下文。In the process of using the battery next time, in addition to using the above-mentioned ampere-hour integration method and open-circuit voltage method to determine the current remaining power method, the method described below can also be used to determine, see below for details.
本申请实施例中，也可以通过电池的测量电压和电流以及更新后的电池的内阻来确定电池当前的剩余电量。具体地，若电池的额定容量为5000mAh，环境温度为20℃，第100次进行放电，假设电池的初始开路电压为4.4V，初始电量为100％，以电流I对电池进行放电一段时间，例如，以0.4C(即放电电流为2A)的放电倍率对电池放电15min，对电池进行测量，从而获取电池的测量电压和电流，根据公式OCV＝U+I*R得到电池在放电15min后的开路电压，结合所选择的开路电压-剩余电量的目标对应关系确定与电池当前的开路电压所对应的当前剩余电量。In the embodiment of the present application, the current remaining power of the battery can also be determined by the measured voltage and current of the battery and the updated internal resistance of the battery. Specifically, if the rated capacity of the battery is 5000mAh, the ambient temperature is 20°C, and the 100th discharge is performed, assuming that the initial open-circuit voltage of the battery is 4.4V and the initial capacity is 100%, the battery is discharged with the current I for a period of time, for example , discharge the battery for 15min at a discharge rate of 0.4C (that is, the discharge current is 2A), measure the battery to obtain the measured voltage and current of the battery, and obtain the open circuit of the battery after 15min of discharge according to the formula OCV=U+I*R voltage, combined with the selected target correspondence relationship between the open circuit voltage and the remaining charge, to determine the current remaining charge corresponding to the current open circuit voltage of the battery.
可以理解的是，在电池老化或低温环境下，电池的内阻会增加，由于本申请实施例在确定电池当前的开路电压时，所使用的电池内阻是更新后的内阻，进一步提高电池的剩余电量估计的准确性。It can be understood that the internal resistance of the battery will increase under the aging or low temperature environment of the battery. Since the internal resistance of the battery used is the updated internal resistance when determining the current open circuit voltage of the battery in the embodiments of the present application, the battery can be further improved. the accuracy of the remaining power estimation.
可选地，在一些实施例中，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同温度所对应的开路电压-剩余电量的对应关系；和/或，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同充放电倍率所对应的开路电压-剩余电量的对应关系。Optionally, in some embodiments, the preset open-circuit voltage-remaining power correspondence includes open-circuit voltage-remaining power correspondences corresponding to different temperatures under the same number of charge-discharge cycles; and/or, The preset open-circuit voltage-remaining power correspondence includes the open-circuit voltage-remaining power correspondences corresponding to different charge-discharge rates under the same number of charge-discharge cycles.
本申请实施例中，预设的开路电压-剩余电量的对应关系中可以包括在同一充放电循环次数下，不同温度所对应的开路电压-剩余电量的对应关系，例如，电池的充放电循环次数为第一次，温度分别在-10℃、10℃、30℃以及50℃下的开路电压-剩余电量的对应关系；预设的开路电压-剩余电量的对应关系中可以包括同一充放电循环次数下，不同充放电倍率所对应的开路电压-剩余电量的对应关系，例如，电池的充放电循环次数为第一次，充放电倍率分别为0.01C、0.03C、0.1C以及1C的开路电压-剩余电量的对应关系。In this embodiment of the present application, the preset open-circuit voltage-remaining power correspondence may include the open-circuit voltage-remaining power corresponding to different temperatures under the same number of charge-discharge cycles, for example, the number of charge-discharge cycles of the battery For the first time, the corresponding relationship between the open circuit voltage and the remaining power at temperatures of -10°C, 10°C, 30°C and 50°C; the preset open circuit voltage-remaining power correspondence can include the same number of charge-discharge cycles. Below, the corresponding relationship between the open circuit voltage and the remaining power corresponding to different charge and discharge rates, for example, the number of charge and discharge cycles of the battery is the first time, and the charge and discharge rates are respectively 0.01C, 0.03C, 0.1C and 1C open circuit voltage- The corresponding relationship of the remaining power.
可选地，在一些实施例中，所述在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系，包括：在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且环境温度相匹配的目标对应关系；和/或，在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且充放电倍率相匹配的目标对应关系。Optionally, in some embodiments, in the process of using the battery, a target corresponding to the current number of charge and discharge cycles of the battery is selected from a preset open-circuit voltage-remaining power correspondence relationship. relationship, including: in the process of using the battery, selecting a target corresponding relationship that matches the current number of charge and discharge cycles of the battery and the ambient temperature from the preset open-circuit voltage-remaining power corresponding relationship; and/or , in the process of using the battery, select a target corresponding relationship that matches the current number of charge-discharge cycles and charge-discharge rate of the battery from the preset open-circuit voltage-remaining power corresponding relationship.
本申请实施例中，在使用电池的过程中，若该电池的当前充放电循环次数是第1次，环境温度为10℃，则可以从预设的多个开路电压-剩余电量的对应关系中选择充放电循环次数为第1次且环境温度为10℃的开路电压-剩余电量的对应关系作为目标对应关系；若该电池的当前充放电循环次数是第10次，充放电倍率为0.01C，则可以从预设的多个开路电压-剩余电量的对应关系中选择充放电循环次数为第10次且充放电倍率为0.01C的开路电压-剩余电量的对应关系作为目标对应关系。In the embodiment of the present application, in the process of using the battery, if the current number of charge-discharge cycles of the battery is the first and the ambient temperature is 10° C., the corresponding relationship between multiple preset open-circuit voltages and remaining power can be obtained. Select the open-circuit voltage-remaining capacity relationship with the first charge-discharge cycle and an ambient temperature of 10°C as the target correspondence; if the current charge-discharge cycle of the battery is the 10th, and the charge-discharge rate is 0.01C, Then, the corresponding relationship between the open circuit voltage and the remaining battery capacity with the 10th charge-discharge cycle number and the charge-discharge rate of 0.01C can be selected as the target correspondence relationship from the preset multiple open-circuit voltage-remaining battery capacity corresponding relationships.
上文介绍了可以从预设的开路电压-剩余电量的对应关系中选择目标对应关系，下文将具体介绍预设的开路电压-剩余电量的对应关系的形成。The above describes that the target correspondence can be selected from the preset open-circuit voltage-remaining power correspondence. The following will specifically describe the formation of the preset open-circuit voltage-remaining power correspondence.
以对电池的放电过程为例，本申请实施例中，可以先在室温条件下，例如20℃，通过放电倍率例如0.01C对电池从起始电压到截止电压进行放电，假设起始电压为4.4V，截止电压为3V。在这一过程中，可以记录电池的不同开路电压所对应的剩余容量，从而可以得到电池的开路电压与剩余容量的关系。然后再将剩余容量除以电池的最大容量值或电池的设计容量，从而可以得到环境温度为20℃且放电倍率为0.01C的情况下的电池的开路电压与剩余电量的对应关系。Taking the discharge process of the battery as an example, in the embodiment of the present application, the battery can be discharged from the starting voltage to the cut-off voltage at room temperature, such as 20° C., at a discharge rate such as 0.01C, assuming that the starting voltage is 4.4. V, the cut-off voltage is 3V. In this process, the remaining capacity corresponding to different open circuit voltages of the battery can be recorded, so that the relationship between the open circuit voltage and the remaining capacity of the battery can be obtained. Then divide the remaining capacity by the maximum capacity value of the battery or the designed capacity of the battery, so as to obtain the corresponding relationship between the open circuit voltage and the remaining capacity of the battery when the ambient temperature is 20°C and the discharge rate is 0.01C.
类似地，可以在环境温度不变且放电倍率不变的情况下，即环境温度仍然为20℃，放电倍率仍然为0.01C，得到电池在不同的放电循环次数下的开路电压与剩余电量的对应关系。Similarly, when the ambient temperature is constant and the discharge rate is unchanged, that is, the ambient temperature is still 20°C and the discharge rate is still 0.01C, the open-circuit voltage of the battery under different discharge cycles and the remaining capacity can be obtained. relation.
类似地，也可以在放电倍率不变的情况下，环境温度每次增加或减少5℃，通过上述类似的方法可以得到不同温度下的电池的开路电压与剩余电量的对应关系。Similarly, when the discharge rate remains unchanged, the ambient temperature can be increased or decreased by 5°C each time, and the corresponding relationship between the open circuit voltage and the remaining capacity of the battery at different temperatures can be obtained by the above-mentioned similar method.
可以理解的是，在放电倍率不变的情况下，环境温度可以不是等间隔的增加或减少，例如，第一次环境温度可以从20℃增加至25℃，第二次环境温度可以从25℃增加至28℃，第三次环境温度可以从28℃增加至30℃等，本申请对此不作具体限定。It can be understood that under the condition that the discharge rate remains unchanged, the ambient temperature may not increase or decrease at equal intervals. For example, the first ambient temperature can be increased from 20°C to 25°C, and the second ambient temperature can be increased from 25°C. When the temperature is increased to 28°C, the third ambient temperature may be increased from 28°C to 30°C, etc., which is not specifically limited in this application.
类似地，还可以在环境温度不变的情况下，放电倍率每次增加0.01C，通过上述类似的方法可以得到不同放电倍率下的电池的开路电压与剩余电量的对应关系。Similarly, the discharge rate can be increased by 0.01C each time when the ambient temperature remains unchanged, and the corresponding relationship between the open-circuit voltage and the remaining capacity of the battery under different discharge rates can be obtained by the above-mentioned similar method.
可以理解的是，在环境温度不变的情况下，放电倍率可以不是等间隔的增加，例如，第一次放电倍率可以从0.01C增加至0.15C，第二次放电倍率可以从0.15C增加至0.25C，第三次放电倍率可以从0.25C增加至0.05C等，本申请对此不作具体限定。It can be understood that under the condition of constant ambient temperature, the discharge rate may not be increased at equal intervals. For example, the first discharge rate may be increased from 0.01C to 0.15C, and the second discharge rate may be increased from 0.15C to 0.15C. 0.25C, the third discharge rate can be increased from 0.25C to 0.05C, etc., which is not specifically limited in this application.
应理解，上述数值仅为举例说明，还可以为其他数值，不应对本申请造成特别限定。It should be understood that the above numerical values are only examples, and other numerical values may also be used, which should not limit the present application.
上文结合图1-图3，详细描述了本申请的方法实施例，下面结合图4-图11，详细描述本申请的装置实施例，装置实施例与方法实施例相互对应，因此未详细描述的部分可以参见前面各方法实施例。The method embodiments of the present application are described in detail above with reference to FIGS. 1 to 3 , and the device embodiments of the present application are described in detail below with reference to FIGS. 4 to 11 . The device embodiments and method embodiments correspond to each other, so they are not described in detail. For the part, please refer to the previous method embodiments.
如图4所示，为本申请实施例提供的一种电池的剩余电量的估计装置400，该装置400可以应用于含硅基极材料负极的锂离子电池，该装置400可以包括选择单元410和确定单元420。As shown in FIG. 4 , a
选择单元410，用于在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系。The
确定单元420，用于根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。The determining
可选地，在一些实施例中，所述确定单元420进一步用于：根据所述电池当前的开路电压，结合所述目标对应关系，利用安时积分法和/或开路电压法，确定所述电池当前的剩余电量。Optionally, in some embodiments, the determining
可选地，在一些实施例中，所述装置400还可以包括：第一获取单元，用于当对所述电池进行充/放电第一时长时，获取当前预测电量，所述当前预测电量为
可选地，在一些实施例中，所述静置状态包括以下状态中的至少一种：所述电池从所述第一时长的结束时刻开始算起往后的时长大于或等于第二时长，所述电池的持续电流小于或等于第一预设阈值，所述电池的电压对时间的导数小于或等于第二预设阈值。Optionally, in some embodiments, the resting state includes at least one of the following states: the duration of the battery from the end time of the first duration is greater than or equal to the second duration, The continuous current of the battery is less than or equal to the first preset threshold, and the derivative of the voltage of the battery with respect to time is less than or equal to the second preset threshold.
可选地，在一些实施例中，所述装置还包括：第二获取单元，用于获取所述目标对应关系下所述电池当前的剩余电量对应的当前开路电压；更新单元，用于根据所述当前开路电压更新所述电池的内阻，所述内阻为R1＝(OCV1-U1)/I1，其中，OCV1表示所述当前开路电压，U1表示对所述电池在当前使用过程中的测量电压，I1表示对所述电池在当前使用过程中的测量电流。Optionally, in some embodiments, the device further includes: a second obtaining unit, configured to obtain the current open-circuit voltage corresponding to the current remaining power of the battery under the target correspondence; an updating unit, configured to The current open circuit voltage updates the internal resistance of the battery, and the internal resistance is R1=(OCV1-U1)/I1, where OCV1 represents the current open circuit voltage, and U1 represents the measurement of the battery in the current use process voltage, I1 represents the current measured for the battery during its current use.
可选地，在一些实施例中，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同温度所对应的开路电压-剩余电量的对应关系；和/或，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同充放电倍率所对应的开路电压-剩余电量的对应关系。Optionally, in some embodiments, the preset open-circuit voltage-remaining power correspondence includes open-circuit voltage-remaining power correspondences corresponding to different temperatures under the same number of charge-discharge cycles; and/or, The preset open-circuit voltage-remaining power correspondence includes the open-circuit voltage-remaining power correspondences corresponding to different charge-discharge rates under the same number of charge-discharge cycles.
可选地，在一些实施例中，所述选择单元410进一步用于：在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且环境温度相匹配的目标对应关系；和/或，在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且充放电倍率相匹配的目标对应关系。Optionally, in some embodiments, the
如图5所示，为本申请实施例提供的一种电子设备500，该电子设备500可以包括含硅基极材料负极的锂离子电池，该电子设备500可以包括处理器510。As shown in FIG. 5 , an
处理器510，用于在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数相匹配的目标对应关系；根据所述电池当前的开路电压，结合所述目标对应关系确定所述电池当前的剩余电量。The
可选地，在一些实施例中，所述处理器510进一步用于：根据所述当前的开路电压，结合所述目标对应关系，利用安时积分法和/或开路电压法，确定所述电池当前的剩余电量。Optionally, in some embodiments, the
可选地，在一些实施例中，所述处理器510进一步用于：当对所述电池进行充/放电第一时长时，获取当前预测电量，所述当前预测电量为
可选地，在一些实施例中，所述静置状态包括以下状态中的至少一种：所述电池从所述第一时长的结束时刻开始算起往后的时长大于或等于第二时长，所述电池的持续电流小于或等于第一预设阈值，所述电池的电压对时间的导数小于或等于第二预设阈值。Optionally, in some embodiments, the resting state includes at least one of the following states: the duration of the battery from the end time of the first duration is greater than or equal to the second duration, The continuous current of the battery is less than or equal to the first preset threshold, and the derivative of the voltage of the battery with respect to time is less than or equal to the second preset threshold.
可选地，在一些实施例中，所述处理器510进一步用于：获取所述目标对应关系下所述电池当前的剩余电量对应的当前开路电压；根据所述当前开路电压更新所述电池的内阻，所述内阻为R1＝(OCV1-U1)/I1，其中，OCV1表示所述当前开路电压，U1表示对所述电池在当前使用过程中的测量电压，I1表示对所述电池在当前使用过程中的测量电流。Optionally, in some embodiments, the
可选地，在一些实施例中，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同温度所对应的开路电压-剩余电量的对应关系；和/或，所述预设的开路电压-剩余电量的对应关系中包括同一充放电循环次数下不同充放电倍率所对应的开路电压-剩余电量的对应关系。Optionally, in some embodiments, the preset open-circuit voltage-remaining power correspondence includes open-circuit voltage-remaining power correspondences corresponding to different temperatures under the same number of charge-discharge cycles; and/or, The preset open-circuit voltage-remaining power correspondence includes the open-circuit voltage-remaining power correspondences corresponding to different charge-discharge rates under the same number of charge-discharge cycles.
可选地，在一些实施例中，所述处理器510进一步用于：在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且环境温度相匹配的目标对应关系；和/或，在使用所述电池的过程中，从预设的开路电压-剩余电量的对应关系中选择与所述电池当前的充放电循环次数且充放电倍率相匹配的目标对应关系。Optionally, in some embodiments, the
本申请实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为执行上述电量估计方法200中的任何一种方法。Embodiments of the present application further provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute any one of the foregoing
本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机程序，所述计算机程序包括程序指令，当所述程序指令被计算机执行时，使所述计算机执行上述电量估计方法200中的任何一种方法。Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, causes The computer executes any one of the above-described
本申请实施例的方案可以应用在有线充电过程中，也可以应用在无线充电过程中，本申请实施例对此不做具体限定。The solutions in the embodiments of the present application may be applied in the wired charging process or in the wireless charging process, which are not specifically limited in the embodiments of the present application.
下面结合图6-图7，对本申请实施例应用的有线充电过程进行描述。The wired charging process applied in the embodiments of the present application will be described below with reference to FIGS. 6 to 7 .
图6是本申请实施例提供的一种充电系统的示意性结构图。该充电系统包括电源提供装置10、电池管理电路20和电池30。电池管理电路20可用于对电池30进行管理。其中，本申请实施例中的电子设备500可以包括电池管理电路20和电池30。FIG. 6 is a schematic structural diagram of a charging system provided by an embodiment of the present application. The charging system includes a
本申请实施例中的电池30可以为上文提到的电池，在该电池30使用的过程中，可以根据该电池30当前的开路电压，结合所选择的目标对应关系，确定该电池30当前的剩余电量。The
作为一个示例，电池管理电路20可以对电池30的充电过程进行管理，比如选择充电通道、控制充电电压和/或充电电流等；作为另一个示例，电池管理电路20可以对电池30的电芯进行管理，如均衡电池30中的电芯的电压等。As an example, the
电池管理电路20可以包括第一充电通道21和通信控制电路23。The
第一充电通道21可用于接收电源提供装置10提供的充电电压和/或充电电流，并将充电电压和/或充电电流加载在电池30的两端，为电池30进行充电。The
电源提供装置10可以是上文描述的输出电压可调的电源提供装置，但本申请实施例对电源提供装置20的类型不做具体限定。例如，该电源提供装置20可以是适配器和移动电源(power bank)等专门用于充电的设备，也可以是电脑等能够提供电源和数据服务的其他设备。The
本申请实施例提供的电池管理电路能够对电池进行直充，换句话说，本申请实施例提供的电池管理电路是支持直充架构的电池管理电路，在直充架构中，直充通道上无需设置变换电路，从而能够降低待充电设备在充电过程的发热量。The battery management circuit provided by the embodiment of the present application can directly charge the battery. In other words, the battery management circuit provided by the embodiment of the present application is a battery management circuit that supports a direct charging architecture. A conversion circuit is provided, so that the heat generation of the device to be charged during the charging process can be reduced.
可选地，在一些实施例中，如图7所示，电池管理电路20还可包括第二充电通道24。第二充电通道24上设置有升压电路25。在电源提供装置10通过第二充电通道24为电池30充电的过程中，升压电路25可用于接收电源提供装置10提供的初始电压，将初始电压升压至目标电压，并基于目标电压为电池30充电，其中初始电压小于电池30的总电压，目标电压大于电池30的总电压；通信控制电路23还可用于控制第一充电通道21和第二充电通道24之间的切换。Optionally, in some embodiments, as shown in FIG. 7 , the
假设该电池30包括多节电芯，该第二充电通道24能够兼容普通的电源提供装置为该电池30进行充电，解决了普通电源提供装置无法为多节电池进行充电的问题。Assuming that the
对于包含多节电芯的电池30来说，电池管理电路20还可以包括均衡电路22，参见上文的描述，该均衡电路22可用于在电池的充电过程和/或放电过程中均衡多节电芯的电压。For a
下面结合图8-图11，对本申请实施例应用的无线充电过程进行描述。The wireless charging process applied by the embodiments of the present application will be described below with reference to FIG. 8 to FIG. 11 .
传统的无线充电技术一般将电源提供装置(如适配器)与无线充电装置(如无线充电底座)相连，并通过该无线充电装置将电源提供装置的输出功率以无线的方式(如电磁波)传输至待充电设备，对待充电设备进行无线充电。该待充电设备可以为上文中的电子设备。The traditional wireless charging technology generally connects a power supply device (such as an adapter) with a wireless charging device (such as a wireless charging base), and transmits the output power of the power supply device wirelessly (such as electromagnetic waves) to the waiting device through the wireless charging device. Charging device, wirelessly charging the device to be charged. The device to be charged may be the electronic device described above.
按照无线充电原理不同，无线充电方式主要分为磁耦合(或电磁感应)、磁共振以及无线电波三种方式。目前，主流的无线充电标准包括QI标准、电源实物联盟(powermatters alliance，PMA)标准、无线电源联盟(alliance forwireless power，A4WP)。QI标准和PMA标准均采用磁耦合方式进行无线充电。A4WP标准采用磁共振方式进行无线充电。According to different wireless charging principles, wireless charging methods are mainly divided into three methods: magnetic coupling (or electromagnetic induction), magnetic resonance and radio waves. At present, the mainstream wireless charging standards include the QI standard, the powermatters alliance (PMA) standard, and the alliance for wireless power (A4WP). Both the QI standard and the PMA standard use magnetic coupling for wireless charging. The A4WP standard uses magnetic resonance for wireless charging.
下面结合图8，对一实施例的无线充电方式进行介绍。The wireless charging method of an embodiment will be described below with reference to FIG. 8 .
如图8所示，无线充电系统包括电源提供装置110、无线充电信号的发射装置120以及充电控制装置130，其中发射装置120例如可以是无线充电底座，充电控制装置130可以指本申请实施例中的充电设备300或电子设备500。As shown in FIG. 8 , the wireless charging system includes a
电源提供装置110与发射装置120连接之后，会将电源提供装置110的输出电压和输出电流传输至发射装置120。After the
发射装置120可以通过内部的无线发射电路121将电源提供装置110的输出电压和输出电流转换成无线充电信号(例如，电磁信号)进行发射。例如，该无线发射电路121可以将电源提供装置110的输出电流转换成交流电，并通过发射线圈或发射天线将该交流电转换成无线充电信号。The transmitting
充电控制装置130可以通过无线接收电路131接收无线发射电路121发射的无线充电信号，并将该无线充电信号转换成无线接收电路131的输出电压和输出电流。例如，该无线接收电路131可以通过接收线圈或接收天线将无线发射电路121发射的无线充电信号转换成交流电，并对该交流电进行整流和/或滤波等操作，将该交流电转换成无线接收电路131的输出电压和输出电流。The charging
若无线接收电路131的输出电压并不适合直接加载到电池133两端，则是需要先经过充电控制装置130内的变换电路132进行恒压和/或恒流控制，以得到充电控制装置130内的电池133所预期的充电电压和/或充电电流。If the output voltage of the
变换电路132可用于对无线接收电路131的输出电压进行变换，以使得变换电路132的输出电压和/或输出电流满足电池133所预期的充电电压和/或充电电流的需求。The
图9是本申请实施例提供的充电系统的另一示意图。请参见图9，无线充电信号的发射装置220还可以包括充电接口223，充电接口223可用于与外部的电源提供装置210相连。无线发射电路221还可用于根据电源提供装置210的输出电压和输出电流，生成无线充电信号。FIG. 9 is another schematic diagram of a charging system provided by an embodiment of the present application. Referring to FIG. 9 , the wireless charging
第一通信控制电路222还可以在无线充电的过程中，调整无线发射电路221从电源提供装置210的输出功率中抽取的功率量，以调整无线发射电路221的发射功率，使得无线发射电路发射的功率能够满足电池的充电需求。例如，电源提供装置210也可以直接输出较大的固定功率(如40W)，第一通信控制电路222可以直接调整无线发射电路221从电源提供装置210提供的固定功率中抽取的功率量。The first
本申请实施例对电源提供装置210的类型不做具体限定。例如，电源提供装置210可以为适配器、移动电源(power bank)、车载充电器或电脑等设备。The embodiment of the present application does not specifically limit the type of the
本申请实施例对充电接口223的类型不做具体限定。可选地，在一些实施例中，该充电接口223可以为USB接口。该USB接口例如可以是USB 2.0接口，micro USB接口，或USBTYPE-C接口。可选地，在另一些实施例中，该充电接口223还可以是lightning接口，或者其他任意类型的能够用于充电的并口和/或串口。The embodiment of the present application does not specifically limit the type of the charging
可选地，第一通信控制电路222调整无线充电信号的发射功率可以指，第一通信控制电路222通过调整无线发射电路221的输入电压和/或输入电流来调整无线充电信号的发射功率。例如，第一通信控制电路可以通过增大无线发射电路的输入电压来增大无线发射电路的发射功率。Optionally, adjusting the transmission power of the wireless charging signal by the first
可选地，如图9所示，待充电设备230还包括第一充电通道233，通过该第一充电通道233可将无线接收电路231的输出电压和/或输出电流提供给电池232，对电池232进行充电。Optionally, as shown in FIG. 9 , the device to be charged 230 further includes a
可选地，第一充电通道233上还可以设置电压转换电路239，该电压转换电路239的输入端与无线接收电路231的输出端电连接，用于对无线接收电路231的输出电压进行恒压和/或恒流控制，以对电池232进行充电，使得电压转换电路239的输出电压和/或输出电流与电池当前所需的充电电压和/或充电电流相匹配。Optionally, a
本申请实施例对第二通信控制电路235向第一通信控制电路222发送指示信息的方式不做具体限定。This embodiment of the present application does not specifically limit the manner in which the second
例如，第二通信控制电路235可以定期向第一通信控制电路222发送指示信息。或者，第二通信控制电路235可以仅在电池的电压达到充电截止电压，或者电池的充电电流达到充电截止电流的情况下，再向第一通信控制电路222发送指示信息。For example, the second
可选地，无线充电信号的接收装置还可包括检测电路234，该检测电路234可以检测电池232的电压和/或充电电流，第二通信控制电路235可以根据电池232的电压和/或充电电流，向第一通信控制电路222发送指示信息，以指示第一通信控制电路222调整无线发射电路221的发射功率对应的输出电压和输出电流。Optionally, the wireless charging signal receiving apparatus may further include a
图10是本申请实施例提供的充电系统的的另一示例。图10的实施例对应的无线充电信号的发射装置220并非从电源提供装置210获取电能，而是直接将外部输入的交流电(如市电)转换成上述无线充电信号。FIG. 10 is another example of the charging system provided by the embodiment of the present application. The wireless
如图10所示，无线充电信号的发射装置220还可包括电压转换电路224和电源提供电路225。电源提供电路225可用于接收外部输入的交流电(如市电)，并根据交流电生成电源提供电路225的输出电压和输出电流。例如，电源提供电路225可以对交流电进行整流和/或滤波，得到直流电或脉动直流电，并将该直流电或脉动直流电传输至电压转换电路224。As shown in FIG. 10 , the wireless charging
电压转换电路224可用于接收电源提供电路225的输出电压，并对电源提供电路225的输出电压进行转换，得到电压转换电路224的输出电压和输出电流。无线发射电路221还可用于根据电压转换电路224的输出电压和输出电流，生成无线充电信号。The
可选地，在一些实施例中，无线充电信号的发射装置220可以支持第一无线充电模式和第二无线充电模式，无线充电信号的发射装置220在第一无线充电模式下对待充电设备的充电速度快于无线充电信号的发射装置220在第二无线充电模式下对待充电设备的充电速度。换句话说，相较于工作在第二无线充电模式下的无线充电信号的发射装置220来说，工作在第一无线充电模式下的无线充电信号的发射装置220充满相同容量的待充电设备中的电池的耗时更短。Optionally, in some embodiments, the wireless charging
参见图11，在本公开的一实施例中，待充电设备230还包括：第二充电通道236。第二充电通道236可为导线。在第二充电通道236上可设置变换电路237，用于对无线接收电路231输出的直流电进行电压控制，得到第二充电通道236的输出电压和输出电流，以对电池232进行充电。Referring to FIG. 11 , in an embodiment of the present disclosure, the device to be charged 230 further includes: a
在一个实施例中，变换电路237可用于降压电路，并且输出恒流和/或恒压的电能。换句话说，该变换电路237可用于对电池的充电过程进行恒压和/或恒流控制。In one embodiment, the
当采用第二充电通道236对电池232进行充电时，无线发射电路221可采用恒定发射功率发射电磁信号，无线接收电路231接收电磁信号后，由变换电路237处理为满足电池232充电需求的电压和电流并输入电池232，实现对电池232的充电。应理解，在一些实施例中，恒定发射功率不一定是发射功率完全保持不变，其可在一定的范围内变动，例如，发射功率为7.5W上下浮动0.5W。When using the
可选地，第二通信控制电路235还可用于控制第一充电通道233和第二充电通道236之间的切换。例如，如图11所示，第一充电通道233上可以设置开关238，第二通信控制电路235可以通过控制该开关238的导通与关断控制第一充电通道233和第二充电通道236之间的切换。上文指出，在某些实施例中，无线充电信号的发射装置220可以包括第一无线充电模式和第二无线充电模式，且无线充电信号的发射装置220在第一无线充电模式下对待充电设备230的充电速度快于无线充电信号的发射装置220在第二无线充电模式下对待充电设备230的充电速度。当无线充电信号的发射装置220使用第一无线充电模式为待充电设备230内的电池充电时，待充电设备230可以控制第一充电通道233工作；当无线充电信号的发射装置220使用第二无线充电模式为待充电设备230内的电池充电时，待充电设备230可以控制第二充电通道236工作。Optionally, the second
可选地，无线充电信号的发射装置220可以与待充电设备230之间进行通信，以协商无线充电信号的发射装置220与待充电设备230之间的充电模式。Optionally, the
除了上文描述的通信内容外，无线充电信号的发射装置220中的第一通信控制电路222与待充电设备230中的第二通信控制电路235之间还可以交互许多其他通信信息。在一些实施例中，第一通信控制电路222和第二通信控制电路235之间可以交互用于安全保护、异常检测或故障处理的信息，如电池232的温度信息，进入过压保护或过流保护的指示信息等信息，功率传输效率信息(该功率传输效率信息可用于指示无线发射电路221和无线接收电路231之间的功率传输效率)。In addition to the communication content described above, many other communication information can also be exchanged between the first
在本申请的实施例中，第二通信控制电路的功能可由待充电设备230的应用处理器实现，由此，可以节省硬件成本。或者，也可由独立的控制芯片实现，由独立的控制芯片实现可提高控制的可靠性。In the embodiment of the present application, the function of the second communication control circuit may be implemented by the application processor of the device to be charged 230, thereby saving hardware costs. Alternatively, it can also be implemented by an independent control chip, which can improve the reliability of control.
可选地，本申请实施例可以将无线接收电路232与电压转换电路239均集成在同一无线充电芯片中，这样可以提高待充电设备集成度，简化待充电设备的实现。例如，可以对传统无线充电芯片的功能进行扩展，使其支持充电管理功能。Optionally, in this embodiment of the present application, both the
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如固态硬盘(Solid State Disk，SSD))等。In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center The transmission is carried out to another website site, computer, server or data center by wire (eg coaxial cable, optical fiber, Digital Subscriber Line, DSL) or wireless (eg infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, Digital Video Disc (DVD)), or semiconductor media (eg, Solid State Disk (SSD)), etc. .
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
当用于本申请中时，虽然术语“第一”、“第二”等可能会在本申请中使用以描述各设备，但这些设备不应受到这些术语的限制。这些术语仅用于将一个设备与另一个设备区别开。比如，在不改变描述的含义的情况下，第一设备可以叫做第二设备，并且同样地，第二设备可以叫做第一设备，只要所有出现的“第一设备”一致重命名并且所有出现的“第二设备”一致重命名即可。第一设备和第二设备都是设备，但可以不是相同的设备。When used in this application, although the terms "first," "second," etc. may be used in this application to describe various devices, these devices should not be limited by these terms. These terms are only used to distinguish one device from another. For example, without changing the meaning of the description, a first device could be called a second device, and likewise, a second device could be called a first device, so long as all occurrences of "first device" are consistently renamed and all occurrences of "first device" are renamed consistently The "second device" can be renamed consistently. The first device and the second device are both devices, but may not be the same device.
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
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| CN117154905A (en)* | 2023-11-01 | 2023-12-01 | 深圳市中正磁能科技有限公司 | SOC power management system and control method |
| CN117154905B (en)* | 2023-11-01 | 2024-03-08 | 深圳市中正磁能科技有限公司 | SOC power management system and control method |
| CN118688657A (en)* | 2024-08-21 | 2024-09-24 | 浙江欣旺达电子有限公司 | Silicon battery discharge terminal voltage compensation method, device, equipment and storage medium |
| CN118688657B (en)* | 2024-08-21 | 2025-01-07 | 浙江欣旺达电子有限公司 | Silicon battery discharge end voltage compensation method, device, equipment and storage medium |
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