技术领域Technical field
本申请涉及扩展坞技术领域，尤其涉及一种扩展坞及其供电方法。The present application relates to the technical field of docking stations, and in particular to a docking station and a power supply method thereof.
背景技术Background technique
扩展坞(Docking station)又称端口复制器(Port Replicator)，通常作为笔记本电脑的外置设备，其通过复制或扩展笔记型计算机的端口，使笔记本电脑与多个配件或外置设备(如电源适配器、网线、鼠标、外置键盘、SSD、U盘、SD卡、TF卡、打印机、外置显示器)进行一站式连接。A docking station, also known as a port replicator, is usually used as an external device for a laptop computer. It duplicates or expands the ports of the laptop computer so that the laptop computer can communicate with multiple accessories or external devices (such as power supplies). Adapter, network cable, mouse, external keyboard, SSD, U disk, SD card, TF card, printer, external monitor) for one-stop connection.
目前，USBC口扩展坞的接口众多（至少都在15个接口以上），所有接口通常由一个或多个电源芯片供电。然而，USBC口扩展坞功耗非常大，其空载功耗普遍在10W以上，而大多数笔记本电脑的采用45W标压，在笔记本电脑接入PD（Power Delivery）适配器的情况下，被显卡、内存、硬盘和屏幕等组件分走大部分功率后，电源芯片勉强能维持扩展坞的供电功率。但是，在未接入PD适配器而仅将扩展坞接入到笔记本电脑的情况下，扩展坞的供电功率明显不足，导致U盘或显示接口等外设难以载入数据，从而导致无法使用外设数据。Currently, USBC port docking stations have many interfaces (at least 15 or more interfaces), and all interfaces are usually powered by one or more power chips. However, the power consumption of the USBC port docking station is very high, and its no-load power consumption is generally above 10W, while most laptops use a standard voltage of 45W. When the laptop is connected to a PD (Power Delivery) adapter, it is consumed by the graphics card, After components such as memory, hard drive, and screen take away most of the power, the power chip can barely maintain the power supply of the docking station. However, when the PD adapter is not connected and the docking station is only connected to the laptop, the power supply of the docking station is obviously insufficient, making it difficult for peripherals such as USB flash drives or display interfaces to load data, resulting in the inability to use the peripherals. data.
发明内容Contents of the invention
本申请提供了一种扩展坞及其供电方法，以解决扩展坞在未接入PD适配器的情况下供电功率不足的技术问题。This application provides a docking station and a power supply method thereof to solve the technical problem of insufficient power supply of the docking station when a PD adapter is not connected.
为了解决上述技术问题，第一方面，本申请提供了一种扩展坞，包括单片机、电芯、PD芯片、外设芯片、第一MOS管、第一DCDC和第二DCDC；In order to solve the above technical problems, in the first aspect, this application provides a docking station, which includes a microcontroller, a battery core, a PD chip, a peripheral chip, a first MOS tube, a first DCDC and a second DCDC;
单片机分别与第一DCDC和PD芯片电连接；The microcontroller is electrically connected to the first DCDC and PD chips respectively;
PD芯片、第二DCDC和第一MOS管之间相互电连接；The PD chip, the second DCDC and the first MOS transistor are electrically connected to each other;
第一DCDC还分别与电芯和外设芯片电连接；The first DCDC is also electrically connected to the battery core and the peripheral chip respectively;
第二DCDC还与外设芯片电连接。The second DCDC is also electrically connected to the peripheral chip.
上述扩展坞通过内置电芯和第一DCDC，并通过PD芯片触发单片机控制电芯的充放电状态，控制第一DCDC的电压转换，实现在无PD适配器接入的情况下，能够采用内置电芯对扩展坞的各个模块和外接设备进行供电，有效解决扩展坞供电功率不足的问题。The above-mentioned docking station uses the built-in battery core and the first DCDC, and triggers the microcontroller through the PD chip to control the charging and discharging state of the battery core, and controls the voltage conversion of the first DCDC, so that the built-in battery core can be used without a PD adapter. Provide power to each module of the docking station and external devices, effectively solving the problem of insufficient power supply of the docking station.
在其中的一个实施例中，还包括第三DCDC、第二MOS管和第三MOS管；In one of the embodiments, it also includes a third DCDC, a second MOS transistor and a third MOS transistor;
第三DCDC分别与单片机、电芯和第二MOS管电连接；The third DCDC is electrically connected to the microcontroller, battery core and second MOS tube respectively;
第二MOS管还与单片机电连接；The second MOS tube is also electrically connected to the microcontroller;
第三MOS管与PD芯片电连接，第三MOS管、第一MOS管和第二DCDC之间相互电连接。The third MOS transistor is electrically connected to the PD chip, and the third MOS transistor, the first MOS transistor and the second DCDC are electrically connected to each other.
本实施例扩展坞通过设置第二MOS管和第二DCDC，以能够在PD适配器接入的情况下，提供为电芯充电的充电通路，通过设置第三MOS管，以提供为外设芯片和外接设备供电的供电通路。In this embodiment, the docking station is provided with a second MOS transistor and a second DCDC to provide a charging path for charging the battery core when the PD adapter is connected, and a third MOS transistor is provided to provide a charging path for peripheral chips and The power supply path for external equipment.
在其中的一个实施例中，还包括第四DCDC，第四DCDC分别与电芯、单片机和快充接口电连接。In one of the embodiments, a fourth DCDC is further included, and the fourth DCDC is electrically connected to the battery core, the microcontroller and the fast charging interface respectively.
本实施例扩展坞通过设置第四DCDC，以实现电芯作为充电宝为用电设备充电，丰富扩展坞的使用场景。In this embodiment, the docking station is provided with a fourth DCDC to enable the battery core to be used as a power bank to charge electrical equipment, thereby enriching the usage scenarios of the docking station.
在其中的一个实施例中，还包括电芯电量采样模块和温度检测模块，电芯电量采样模块分别与单片机和电芯电连接，温度检测模块分别与单片机和电芯电连接。In one embodiment, it also includes a battery core power sampling module and a temperature detection module. The battery core power sampling module is electrically connected to the microcontroller and the battery core respectively, and the temperature detection module is electrically connected to the microcontroller and the battery core respectively.
一种扩展坞的供电方法，包括：A power supply method for a docking station, including:
基于PD芯片检测扩展坞的接入状态；Detect the access status of the docking station based on the PD chip;
当接入状态为扩展坞接入Host端时，通过PD芯片验证Host端的电压信号；When the access status is that the docking station is connected to the Host, the voltage signal of the Host is verified through the PD chip;
若电压信号满足预设电压条件，则触发单片机进入放电工作状态，并通过PD芯片使能第一MOS管和第二DCDC，以控制第一MOS管和第二DCDC传输Host端的电源电流至外设供电通路，外设供电通路设有外设芯片和外接设备；If the voltage signal meets the preset voltage condition, the microcontroller is triggered to enter the discharge working state, and the first MOS transistor and the second DCDC are enabled through the PD chip to control the first MOS transistor and the second DCDC to transmit the power supply current of the Host end to the peripheral device. Power supply path, the peripheral power supply path is equipped with peripheral chips and external devices;
通过单片机使能第一DCDC，以控制第一DCDC传输电芯电流至外设供电通路。The first DCDC is enabled through the microcontroller to control the first DCDC to transmit the cell current to the peripheral power supply path.
在其中的一个实施例中，基于PD芯片检测扩展坞的接入状态之后，还包括：In one of the embodiments, after detecting the access status of the docking station based on the PD chip, the method further includes:
当接入状态为扩展坞接入PD适配器时，触发单片机进入充电工作状态；When the access state is that the docking station is connected to the PD adapter, the microcontroller is triggered to enter the charging state;
通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第三DCDC至电芯。The second MOS transistor is enabled through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter to the battery core through the third DCDC.
在其中的一个实施例中，基于PD芯片检测扩展坞的接入状态之后，还包括：In one of the embodiments, after detecting the access status of the docking station based on the PD chip, the method further includes:
当接入状态为扩展坞同时接入Host端和PD适配器时，触发单片机进入边充边放工作状态，并通过PD芯片使能第一MOS管、第三MOS管和第二DCDC，以控制第一MOS管传输PD适配器的电源电流经第三MOS管至Host端，以及经第二DCDC至外设供电通路；When the access state is that the docking station is connected to the Host side and the PD adapter at the same time, the microcontroller is triggered to enter the charging and discharging working state, and the first MOS tube, the third MOS tube and the second DCDC are enabled through the PD chip to control the third MOS tube. One MOS transistor transmits the power supply current of the PD adapter to the Host terminal through the third MOS transistor, and to the peripheral power supply path through the second DCDC;
通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第四DCDC至电芯；The second MOS transistor is enabled through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter to the battery core through the fourth DCDC;
通过所述单片机使能所述第一DCDC，以控制所述第一DCDC传输所述电芯电流至所述外设供电通路。The first DCDC is enabled by the microcontroller to control the first DCDC to transmit the cell current to the peripheral power supply path.
在其中的一个实施例中，供电方法还包括：In one embodiment, the power supply method further includes:
当扩展坞的快充接口接入用电设备时，触发单片机与用电设备进行协议验证；When the fast charging interface of the docking station is connected to a powered device, the microcontroller is triggered to perform protocol verification with the powered device;
若协议验证成功，则通过单片机使能第四DCDC，以控制第四DCDC将电芯电流转换后经快充接口传输至用电设备。If the protocol verification is successful, the fourth DCDC is enabled through the microcontroller to control the fourth DCDC to convert the cell current and transmit it to the electrical device through the fast charging interface.
在其中的一个实施例中，供电方法还包括：In one embodiment, the power supply method further includes:
当扩展坞接入PD适配器且扩展坞的快充接口接入用电设备时，激活单片机，并通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第四DCDC至电芯；When the docking station is connected to the PD adapter and the fast charging interface of the docking station is connected to a powered device, the microcontroller is activated, and the second MOS transistor is enabled through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter through the fourth DCDC to the cell;
通过单片机使能第四DCDC，以控制第四DCDC将电芯电流转换后经快充接口传输至用电设备。The fourth DCDC is enabled through the microcontroller to control the fourth DCDC to convert the cell current and transmit it to the electrical equipment through the fast charging interface.
在其中的一个实施例中，供电方法还包括：In one embodiment, the power supply method further includes:
通过温度检测模块对电芯进行温度采样，并将采样信号传输至单片机；The temperature of the battery core is sampled through the temperature detection module, and the sampling signal is transmitted to the microcontroller;
通过单片机对采样信号进行模数转换，以识别电芯的温度值；Perform analog-to-digital conversion of the sampling signal through a microcontroller to identify the temperature value of the battery core;
若温度值大于预设阈值，则通过单片机控制电芯停止工作。If the temperature value is greater than the preset threshold, the microcontroller controls the battery core to stop working.
上述扩展坞的供电方法，能够满足仅有Host端接入、仅有PD适配器接入、同时有Host端和PD适配器、快充接口有用电设备接入以及PD适配器接入的同时快充接口有用电设备接入等多种应用场景的使用需求，既解决了在无PD适配器接入情况下供电功率不足的问题，提高扩展坞的续航能力，降低Host端的电量消耗，还实现了扩展坞的更多用途，丰富了扩展坞的应用场景。The power supply method of the above-mentioned docking station can meet the requirements of only the Host terminal being connected, only the PD adapter being connected, both the Host terminal and the PD adapter being connected, the fast charging interface being connected with a powered device, and the PD adapter being connected to the simultaneous fast charging interface. It meets the usage requirements of various application scenarios such as the access of electrical equipment. It not only solves the problem of insufficient power supply without PD adapter access, improves the battery life of the docking station, reduces the power consumption of the host side, but also realizes the expansion of the docking station. More uses enrich the application scenarios of the docking station.
附图说明Description of the drawings
图1为本申请一实施例示出的扩展坞的电路结构示意图；Figure 1 is a schematic circuit structure diagram of a docking station according to an embodiment of the present application;
图2为本申请另一实施例示出的扩展坞的电路结构示意图；Figure 2 is a schematic circuit structure diagram of a docking station according to another embodiment of the present application;
图3为本申请又一实施例示出的扩展坞的电路结构示意图；Figure 3 is a schematic circuit structure diagram of a docking station according to another embodiment of the present application;
图4为本申请再一实施例示出的扩展坞的电路结构示意图；Figure 4 is a schematic circuit structure diagram of a docking station according to yet another embodiment of the present application;
图5为本申请一实施例示出的扩展坞的供电方法的流程示意图；Figure 5 is a schematic flowchart of a power supply method for a docking station according to an embodiment of the present application;
图6为本申请另一实施例示出的扩展坞的供电方法的流程示意图；Figure 6 is a schematic flowchart of a power supply method for a docking station according to another embodiment of the present application;
图7为本申请又一实施例示出的扩展坞的供电方法的流程示意图。FIG. 7 is a schematic flowchart of a power supply method for a docking station according to 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清楚、完整地描述，显然，所描述的实施例仅仅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作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 clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元件被称作“直接在”另一元件“上”时，不存在中间元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的”。It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only."
请参见图1，本实施例示出的一种扩展坞的电路结构示意图，其中图中箭头方向为电流传输方向。该扩展坞包括单片机、电芯、PD芯片、外设芯片、第一MOS管、第一DCDC和第二DCDC；Please refer to FIG. 1 , which is a schematic diagram of the circuit structure of a docking station shown in this embodiment, in which the direction of the arrow in the figure is the direction of current transmission. The docking station includes a microcontroller, a battery core, a PD chip, a peripheral chip, a first MOS tube, a first DCDC and a second DCDC;
单片机分别与第一DCDC和PD芯片电连接；The microcontroller is electrically connected to the first DCDC and PD chips respectively;
PD芯片、第二DCDC和第一MOS管之间相互电连接；The PD chip, the second DCDC and the first MOS transistor are electrically connected to each other;
第一DCDC还分别与电芯和外设芯片电连接；The first DCDC is also electrically connected to the battery core and the peripheral chip respectively;
第二DCDC还与外设芯片电连接。The second DCDC is also electrically connected to the peripheral chip.
在本实施例中，单片机用于控制扩展坞各个电路元件的工作状态；PD（PowerDelivery）芯片用于根据Host端（如电脑等计算机设备）和PD适配器的接入情况触发单片机进入相应的工作状态，以及控制Host端和PD适配器对扩展坞供电的连接通路；电芯作为扩展坞的内置电源；外设芯片用于与外接设备（如U盘、读卡器和鼠标等）通信和供电；金氧半场效晶体管（Metal-Oxide-Semiconductor Field-Effect Transistor, MOS管）用于接收PD芯片或单片机的高电平或低电平，以控制通路的导通情况；直流-直流转换器（DC-to-DCconverter，DCDC）用于直流电压转换，以将电源电压转换为满足供电/充电需求的工作电压。In this embodiment, the microcontroller is used to control the working status of each circuit element of the docking station; the PD (PowerDelivery) chip is used to trigger the microcontroller to enter the corresponding working status based on the access status of the Host (such as a computer device such as a computer) and the PD adapter. , as well as the connection path that controls the Host end and PD adapter to supply power to the docking station; the battery core serves as the built-in power supply of the docking station; the peripheral chip is used to communicate and supply power to external devices (such as U disks, card readers, mice, etc.); gold Metal-Oxide-Semiconductor Field-Effect Transistor (MOS tube) is used to receive the high or low level of the PD chip or microcontroller to control the conduction of the path; DC-DC converter (DC -to-DCconverter (DCDC) is used for DC voltage conversion to convert the power supply voltage into an operating voltage that meets power supply/charging needs.
可选地，当无Host端和无PD适配器接入时，单片机和PD芯片处于休眠状态，由电芯释放静态电流，保证扩展坞的供电续航能力。当接入Host端时，除电芯释放电能外，第一MOS管与Host端电连接，以接收Host端传输的供电电流或者向Host端传输充电电流；PD芯片与Host端通信连接，以对Host端进行充放电协议验证。当接入PD适配器时，PD芯片与PD适配器通信连接，以对PD适配器进行充电协议验证。Optionally, when no Host and no PD adapter are connected, the microcontroller and PD chip are in a dormant state, and the battery core releases static current to ensure the power supply endurance of the docking station. When connected to the Host terminal, in addition to the battery cell releasing electric energy, the first MOS tube is electrically connected to the Host terminal to receive the power supply current transmitted by the Host terminal or transmit the charging current to the Host terminal; the PD chip is connected to the Host terminal for communication. The Host side performs charge and discharge protocol verification. When the PD adapter is connected, the PD chip communicates with the PD adapter to verify the charging protocol of the PD adapter.
可选地，第一DCDC的输出端和第二DCDC的输出端分别设置有大功率二极管，以利用大功率二极管的隔离作用，防止第一DCDC和第二DCDC之间的电压微差串扰。Optionally, the output terminals of the first DCDC and the second DCDC are respectively provided with high-power diodes to utilize the isolation effect of the high-power diodes to prevent voltage differential crosstalk between the first DCDC and the second DCDC.
本实施例通过内置电芯和第一DCDC，并通过PD芯片触发单片机控制电芯的充放电状态，控制第一DCDC的电压转换，实现在无PD适配器接入的情况下，能够采用内置电芯对扩展坞的各个模块和外接设备进行供电，有效解决扩展坞供电功率不足的问题。In this embodiment, the built-in battery core and the first DCDC are used, and the PD chip triggers the microcontroller to control the charging and discharging state of the battery core, and controls the voltage conversion of the first DCDC, so that the built-in battery core can be used without a PD adapter. Provide power to each module of the docking station and external devices, effectively solving the problem of insufficient power supply of the docking station.
如图2示出的另一实施例提供的扩展坞的电路结构示意图。应理解，与图1实施例相同的部分，请参见图1实施例的相关描述，在此不再赘述。该扩展坞还包括第三DCDC、第二MOS管和第三MOS管；Figure 2 is a schematic diagram of the circuit structure of a dock provided by another embodiment. It should be understood that for parts that are the same as those in the embodiment of FIG. 1 , please refer to the relevant description of the embodiment of FIG. 1 and will not be described again here. The docking station also includes a third DCDC, a second MOS tube and a third MOS tube;
第三DCDC分别与单片机、电芯和第二MOS管电连接；The third DCDC is electrically connected to the microcontroller, battery core and second MOS tube respectively;
第二MOS管还与单片机电连接；The second MOS tube is also electrically connected to the microcontroller;
第三MOS管与PD芯片电连接，第三MOS管、第一MOS管和第二DCDC之间相互电连接。The third MOS transistor is electrically connected to the PD chip, and the third MOS transistor, the first MOS transistor and the second DCDC are electrically connected to each other.
在本实施例中，由单片机分别控制第二MOS管的导通情况和第三DCDC的电压转换情况，以实现电芯的充电控制；由PD芯片分别控制第三MOS管和第一MOS管的导通情况以及第二DCDC的电压转换情况，以实现外设芯片的供电控制。In this embodiment, the microcontroller controls the conduction status of the second MOS transistor and the voltage conversion status of the third DCDC to realize charging control of the battery core; the PD chip controls the conduction status of the third MOS transistor and the first MOS transistor respectively. The conduction status and the voltage conversion status of the second DCDC are used to realize the power supply control of the peripheral chip.
通过设置第二MOS管和第二DCDC，以能够在PD适配器接入的情况下，提供为电芯充电的充电通路，提高电芯的续航能力；通过设置第三MOS管，以能够在PD适配器接入的情况下，提供为外设芯片和外接设备供电的供电通路。By setting the second MOS tube and the second DCDC, it is possible to provide a charging path for charging the battery core when the PD adapter is connected, thereby improving the endurance of the battery core; by setting the third MOS tube, it is possible to provide a charging path for the battery core when the PD adapter is connected. When connected, it provides a power supply path for peripheral chips and external devices.
如图3示出的又一实施例提供的扩展坞的电路结构示意图。应理解，与图1实施例相同的部分，请参见图1实施例的相关描述，在此不再赘述。该扩展坞还包括第四DCDC，第四DCDC分别与电芯、单片机和快充接口电连接。Figure 3 shows a schematic circuit structure diagram of a docking station provided by yet another embodiment. It should be understood that for parts that are the same as those in the embodiment of FIG. 1 , please refer to the relevant description of the embodiment of FIG. 1 and will not be described again here. The docking station also includes a fourth DCDC, which is electrically connected to the battery core, the microcontroller and the fast charging interface respectively.
在本实施例中，快充接口是扩展坞为用电设备（如手机、平板电脑和智能手环等移动终端）提供的充电接口。当扩展坞的快充接口与用电设备的充电接口对接时，由单片机控制第四DCDC的电压转换情况，以向用电设备传输满足用电设备充电功率的电能。本实施例实现电芯作为充电宝为用电设备充电，丰富扩展坞的使用场景。In this embodiment, the fast charging interface is a charging interface provided by the docking station for power-consuming devices (such as mobile terminals such as mobile phones, tablet computers, and smart bracelets). When the fast charging port of the docking station is connected to the charging port of the electrical device, the microcontroller controls the voltage conversion of the fourth DCDC to transmit power to the electrical device that meets the charging power of the electrical device. In this embodiment, the battery core can be used as a power bank to charge electrical equipment, enriching the usage scenarios of the docking station.
如图4示出的再一实施例提供的扩展坞的电路结构示意图。应理解，与图1至3实施例相同的部分，请参见图1至3实施例的相关描述，在此不再赘述。该扩展坞还包括电芯电量采样模块和温度检测模块，电芯电量采样模块分别与单片机和电芯电连接，温度检测模块分别与单片机和电芯电连接。Figure 4 is a schematic diagram of the circuit structure of a dock provided by yet another embodiment. It should be understood that for parts that are the same as those in the embodiment of FIGS. 1 to 3 , please refer to the relevant description of the embodiment of FIGS. 1 to 3 and will not be described again here. The docking station also includes a battery power sampling module and a temperature detection module. The battery power sampling module is electrically connected to the microcontroller and the battery core respectively, and the temperature detection module is electrically connected to the microcontroller and the battery core respectively.
在本实施例中，温度检测模块用于检测电芯温度，保证电芯在合适温度范围内工作；电芯电量采样模块用于检测电芯电量，以及时了解扩展坞的电量情况。In this embodiment, the temperature detection module is used to detect the temperature of the battery core to ensure that the battery core operates within a suitable temperature range; the battery power sampling module is used to detect the power of the battery core to understand the power status of the docking station in a timely manner.
请参照图5，图5为本申请实施例提供的一种扩展坞的供电方法的流程示意图。本申请实施例的扩展坞的供电方法可应用于计算机设备，该计算机设备包括但不限于智能手机、笔记本电脑、平板电脑、桌上型计算机、物理服务器和云服务器等设备。如图1所示，本实施例的扩展坞的供电方法包括步骤S101至步骤S104，详述如下：Please refer to FIG. 5 , which is a schematic flowchart of a power supply method for a dock provided by an embodiment of the present application. The power supply method of the docking station in the embodiment of the present application can be applied to computer equipment, which includes but is not limited to smartphones, laptops, tablets, desktop computers, physical servers, cloud servers and other equipment. As shown in Figure 1, the power supply method of the docking station in this embodiment includes steps S101 to S104, which are detailed as follows:
步骤S101，基于PD芯片检测扩展坞的接入状态；Step S101, detect the access status of the docking station based on the PD chip;
步骤S102，当接入状态为扩展坞接入Host端时，通过PD芯片验证Host端的电压信号；Step S102, when the access status is that the docking station is connected to the Host end, verify the voltage signal of the Host end through the PD chip;
步骤S103，若电压信号满足预设电压条件，则触发单片机进入放电工作状态，并通过PD芯片使能第一MOS管和第二DCDC，以控制第一MOS管和第二DCDC传输Host端的电源电流至外设供电通路，外设供电通路设有外设芯片和外接设备；Step S103, if the voltage signal meets the preset voltage condition, the microcontroller is triggered to enter the discharge working state, and the first MOS transistor and the second DCDC are enabled through the PD chip to control the power supply current of the transmission host end of the first MOS transistor and the second DCDC. To the peripheral power supply path, the peripheral power supply path is equipped with peripheral chips and external devices;
步骤S104，通过单片机使能第一DCDC，以控制第一DCDC传输电芯电流至外设供电通路。Step S104: Enable the first DCDC through the microcontroller to control the first DCDC to transmit the cell current to the peripheral power supply path.
在本步骤中，PD芯片可以通过UFP CC端口分别与Host端和PD适配器通信，从而可以通过检测UFP CC端口的接入情况，检测扩展坞的接入状态。应理解，在未接入Host端和PD适配器的情况下，PD芯片处于休眠状态；当有Host端或PD适配器接入时，PD芯片才被激活。In this step, the PD chip can communicate with the Host and the PD adapter respectively through the UFP CC port, so that the access status of the docking station can be detected by detecting the access status of the UFP CC port. It should be understood that the PD chip is in a dormant state when the Host and PD adapter are not connected; the PD chip is activated only when the Host or PD adapter is connected.
示例性地，如图4所示，当扩展坞的上行端接入Host端时，PD芯片通过UFP CC与Host端进行充放电协议验证；若PD芯片检测到Host端电压正确，通过GPIO1拉高输出高电平至第一MOS管，第一MOS管的集电极与发射极导通，第二DCDC进入工作状态；Host端的电源电流通过第一MOS管传输至第二DCDC，经第二DCDC电压转换后输出5V直流电流，再传输至各个外设芯片和各个外接设备供电；同时，PD芯片通过I2C-2告知单片机：“上行端已接入，请停止休眠进入放电工作状态”，单片机通过GPIO-F使能第一DCDC，将电芯电源电流转换为5V直流电流，输出至各个外设芯片和各个外接设备供电，第一DCDC和第二DCDC的5V直流电流叠加可以解决Docking带载能力不足的问题。For example, as shown in Figure 4, when the upstream end of the docking station is connected to the Host end, the PD chip performs charge and discharge protocol verification with the Host end through UFP CC; if the PD chip detects that the Host end voltage is correct, it pulls it high through GPIO1 Output a high level to the first MOS tube, the collector and emitter of the first MOS tube are connected, and the second DCDC enters the working state; the power supply current at the host end is transmitted to the second DCDC through the first MOS tube, and passes through the second DCDC voltage After conversion, a 5V DC current is output, and then transmitted to each peripheral chip and each external device for power supply; at the same time, the PD chip notifies the microcontroller through I2C-2: "The upstream end has been connected, please stop sleeping and enter the discharge working state." The microcontroller uses GPIO -F enables the first DCDC, converts the cell power supply current into 5V DC current, and outputs it to each peripheral chip and each external device for power supply. The superposition of the 5V DC current of the first DCDC and the second DCDC can solve the problem of insufficient Docking load capacity. The problem.
如图6所示，图6为本申请实施例示出的另一种扩展坞的供电方法的流程示意图。在图1所示实施例的基础上，步骤S101之后，还包括：As shown in FIG. 6 , FIG. 6 is a schematic flowchart of another power supply method for a docking station according to an embodiment of the present application. Based on the embodiment shown in Figure 1, after step S101, it also includes:
步骤S201，当接入状态为扩展坞接入PD适配器时，触发单片机进入充电工作状态；Step S201, when the access state is that the docking station is connected to the PD adapter, trigger the microcontroller to enter the charging working state;
步骤S202，通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第三DCDC至电芯。Step S202: Enable the second MOS transistor through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter to the battery core through the third DCDC.
在本实施例中，示例性地，如图4所示，当PD芯片检测到有PD适配器接入而被激活，PD芯片通过DFP CC与PD适配器进行充电协议验证；若PD适配器的电压正确，则PD芯片通过I2C-2告知单片机：“外部有PD适配器接入,请停止休眠进入充电状态”，单片机通过GPIO-D拉高，输出高电平至第二MOS管，第二MOS管的集电极与发射极导通，PD芯片通过GPIO3拉高输出高电平至第三MOS管，第三MOS管的集电极与发射极导通；PD适配器的电源电流通过第二MOS管和第三MOS管分成两路：一路通过第二MOS管传输至第三DCDC，经第三DCDC转换为3.6-4.2V直流给电芯充电；另一路通过第三MOS管传输至第一MOS管和第二DCDC，此时PD芯片GPIO1拉低，使第三MOS管和第二DCDC截止。In this embodiment, for example, as shown in Figure 4, when the PD chip detects that a PD adapter is connected and is activated, the PD chip performs charging protocol verification with the PD adapter through the DFP CC; if the voltage of the PD adapter is correct, Then the PD chip informs the microcontroller through I2C-2: "There is an external PD adapter connected, please stop sleeping and enter the charging state." The microcontroller pulls it high through GPIO-D and outputs a high level to the second MOS tube. The set of the second MOS tube The electrode and the emitter are connected, the PD chip pulls up the output high level to the third MOS tube through GPIO3, and the collector of the third MOS tube is connected to the emitter; the power supply current of the PD adapter passes through the second MOS tube and the third MOS tube. The tube is divided into two channels: one channel is transmitted to the third DCDC through the second MOS tube, and is converted into 3.6-4.2V DC by the third DCDC to charge the battery; the other channel is transmitted to the first MOS tube and the second DCDC through the third MOS tube. , at this time, the PD chip GPIO1 is pulled low, causing the third MOS tube and the second DCDC to be cut off.
如图7所示，图7为本申请实施例示出的另一种扩展坞的供电方法的流程示意图。在图1所示实施例的基础上，步骤S101之后，还包括：As shown in FIG. 7 , FIG. 7 is a schematic flowchart of another power supply method for a docking station according to an embodiment of the present application. Based on the embodiment shown in Figure 1, after step S101, it also includes:
当接入状态为扩展坞同时接入Host端和PD适配器时，触发单片机进入边充边放工作状态，并通过PD芯片使能第一MOS管、第三MOS管和第二DCDC，以控制第一MOS管传输PD适配器的电源电流经第三MOS管至Host端，以及经第二DCDC至外设供电通路；When the access state is that the docking station is connected to the Host side and the PD adapter at the same time, the microcontroller is triggered to enter the charging and discharging working state, and the first MOS tube, the third MOS tube and the second DCDC are enabled through the PD chip to control the third MOS tube. One MOS transistor transmits the power supply current of the PD adapter to the Host terminal through the third MOS transistor, and to the peripheral power supply path through the second DCDC;
通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第四DCDC至电芯；The second MOS transistor is enabled through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter to the battery core through the fourth DCDC;
通过单片机使能第一DCDC，以控制第一DCDC传输电芯电流至外设供电通路。The first DCDC is enabled through the microcontroller to control the first DCDC to transmit the cell current to the peripheral power supply path.
在本实施例中，示例性地，如图4所示，当扩展坞的上行端接入Host端且接入PD适配器时，PD芯片通过DFP CC与PD适配器协议验证成功，且通过UFP CC与Host协议验证成功，则PD芯片的GPIO1和GPIO3拉高，以导通第一MOS管、第三MOS管和第二DCDC；PD适配器的电源电流由第三MOS管传输至第二DCDC，以为各个外设芯片和外接设备供电，以及由第三MOS管传输至第一MOS管为Host端充电。同时PD芯片通过I2C-2告知单片机：“上行端Host和下行端PD适配器已接入，请进入边充边放工作状态”，单片机GPIO-F拉高输出高电平至第一DCDC，第一DCDC将电芯电流转换为5V输出至各个外设芯片和外接设备；单片机GPIO-D拉高输出高电平至第二MOS管，电源电流还由第二MOS管传输至第三DCDC，经第三DCDC转换为3.6-4.2V直流给电芯充电。此时电芯边充电边放电，电芯将电芯充放电线路多余的电量存储起来。In this embodiment, for example, as shown in Figure 4, when the upstream end of the docking station is connected to the Host end and the PD adapter, the PD chip is successfully verified through the DFP CC and PD adapter protocols, and is successfully verified through the UFP CC and PD adapter protocols. If the Host protocol is successfully verified, GPIO1 and GPIO3 of the PD chip are pulled high to turn on the first MOS tube, the third MOS tube and the second DCDC; the power supply current of the PD adapter is transmitted from the third MOS tube to the second DCDC to connect each The peripheral chips and external devices are powered, and the third MOS transistor is transmitted to the first MOS transistor to charge the Host terminal. At the same time, the PD chip notifies the microcontroller through I2C-2: "The upstream host and the downstream PD adapter have been connected, please enter the charging and discharging working state." The microcontroller GPIO-F pulls the output high level to the first DCDC, and the first DCDC converts the cell current into 5V and outputs it to various peripheral chips and external devices; the single-chip microcomputer GPIO-D pulls the output high level to the second MOS tube, and the power supply current is also transmitted from the second MOS tube to the third DCDC. Three DCDC are converted into 3.6-4.2V DC to charge the battery cells. At this time, the battery core is charging and discharging at the same time, and the battery core stores the excess power in the battery core charging and discharging circuit.
在图5至7实施例的基础上，在其他一些实施例中，供电方法还包括：Based on the embodiments in Figures 5 to 7, in some other embodiments, the power supply method further includes:
当扩展坞的快充接口接入用电设备时，触发单片机与用电设备进行协议验证；When the fast charging interface of the docking station is connected to a powered device, the microcontroller is triggered to perform protocol verification with the powered device;
若协议验证成功，则通过单片机使能第四DCDC，以控制第四DCDC将电芯电流转换后经快充接口传输至用电设备。If the protocol verification is successful, the fourth DCDC is enabled through the microcontroller to control the fourth DCDC to convert the cell current and transmit it to the electrical device through the fast charging interface.
在本实施例中，快充接口可以为基于PD快充协议的USBA接口。当用户无法使用充电器对手机或IPAD等移动终端充电（快充接口用电设备）时，扩展坞的快充接口可以使扩展坞当作充电宝使用。示例性地，如图4所示，当有移动终端接入扩展坞的快充接口时，激活单片机，通过D+/D-与单片机进行协议验证成功后，单片机通过GPIO-E拉高输出高电平至第四DCDC，电芯电流由第四DCDC转换为18W输出至移动终端充电。In this embodiment, the fast charging interface may be a USBA interface based on the PD fast charging protocol. When the user cannot use the charger to charge mobile terminals such as mobile phones or IPADs (power devices with fast charging interfaces), the fast charging interface of the docking station can enable the docking station to be used as a power bank. For example, as shown in Figure 4, when a mobile terminal is connected to the fast charging interface of the docking station, the microcontroller is activated. After successful protocol verification with the microcontroller through D+/D-, the microcontroller pulls up the output high power through GPIO-E. Level to the fourth DCDC, the cell current is converted from the fourth DCDC to 18W and output to the mobile terminal for charging.
在图5至7实施例的基础上，在其他一些实施例中，供电方法还包括：Based on the embodiments in Figures 5 to 7, in some other embodiments, the power supply method further includes:
当扩展坞接入PD适配器且扩展坞的快充接口接入用电设备时，激活单片机，并通过单片机使能第二MOS管，以控制第二MOS管传输PD适配器的电源电流经第四DCDC至电芯；When the docking station is connected to the PD adapter and the fast charging interface of the docking station is connected to a powered device, the microcontroller is activated, and the second MOS transistor is enabled through the microcontroller to control the second MOS transistor to transmit the power supply current of the PD adapter through the fourth DCDC to the cell;
通过单片机使能第四DCDC，以控制第四DCDC将电芯电流转换后经快充接口传输至用电设备。The fourth DCDC is enabled through the microcontroller to control the fourth DCDC to convert the cell current and transmit it to the electrical equipment through the fast charging interface.
在本实施例中，对于用户移动终端和扩展坞均没电，且只有一个PD适配器时，可以将PD适配器接入扩展坞，移动终端再接入到扩展坞的快充接口，以实现同时对移动终端和扩展坞充电。示例性地，如图4所示，当PD适配器接入扩展坞时，PD芯片被激活，PD芯片通过DFP CC与PD适配器进行协议验证，通过I2C-2激活单片机；协议验证成功后，PD芯片通过GPIO3拉高输出高电平至第三MOS管，单片机通过GPIO-D拉高输出高电平至第二MOS管；PD适配器的电源电流通过MOS2和MOS3分成两路；一路通过第三MOS管传输至第一MOS管和第二DCDC，此时PD芯片的GPIO1拉低，第一MOS管和第二DCDC截止；另一路通过第二MOS传输至第三DCDC，第三DCDC输出电芯适应的电压，为电芯的充放电线路充电；单片机拉高GPIO-E输出高电平至第四DCDC，第四DCDC将电芯充放电线路电源转换为18W输出至移动终端。In this embodiment, when both the user's mobile terminal and the docking station are out of power and there is only one PD adapter, the PD adapter can be connected to the docking station, and the mobile terminal can then be connected to the fast charging interface of the docking station to realize simultaneous charging. Mobile terminal and docking station charging. For example, as shown in Figure 4, when the PD adapter is connected to the docking station, the PD chip is activated, the PD chip performs protocol verification with the PD adapter through DFP CC, and activates the microcontroller through I2C-2; after the protocol verification is successful, the PD chip Pull the output high level to the third MOS tube through GPIO3, and the microcontroller pulls the output high level to the second MOS tube through GPIO-D; the power supply current of the PD adapter is divided into two channels through MOS2 and MOS3; one channel passes through the third MOS tube It is transmitted to the first MOS tube and the second DCDC. At this time, the GPIO1 of the PD chip is pulled low, and the first MOS tube and the second DCDC are cut off; the other channel is transmitted to the third DCDC through the second MOS, and the third DCDC output cell adapts voltage to charge the charging and discharging circuit of the battery cell; the microcontroller pulls up the GPIO-E output high level to the fourth DCDC, and the fourth DCDC converts the power supply of the charging and discharging circuit of the battery cell into 18W and outputs it to the mobile terminal.
在图5至7实施例的基础上，在其他一些实施例中，供电方法还包括：Based on the embodiments in Figures 5 to 7, in some other embodiments, the power supply method further includes:
通过温度检测模块对电芯进行温度采样，并将采样信号传输至单片机；The temperature of the battery core is sampled through the temperature detection module, and the sampling signal is transmitted to the microcontroller;
通过单片机对采样信号进行模数转换，以识别电芯的温度值；Perform analog-to-digital conversion of the sampling signal through a microcontroller to identify the temperature value of the battery core;
若温度值大于预设阈值，则通过单片机控制电芯停止工作。If the temperature value is greater than the preset threshold, the microcontroller controls the battery core to stop working.
在本实施例中，温度检测模块包括温度传感器（NTC）和PCM电芯保护板。由于扩展坞充电和放电都会使电芯发热，电芯温度过高会导致扩展坞爆炸等安全风险，所以本实施例通过温度检测模块对电芯温度进行监控和对扩展坞电路保护，以保证电芯在适合温度范围内工作。示例性地，若电芯温度过高，NTC（温度传感器）温敏电阻会随着温度过高而变小，温度检测模块将采样值送到单片机，由单片机的内部A/D转换程序对采样值进行处理，得知电芯具体温度过高。此时，单片机通过控制PCM电芯保护板，使用电线路停止工作，进而使电芯的工作也截止；当NTC检测到电芯温度降到可以工作的合适温度时，单片机通过PCM电芯保护板，打开电芯工作线路。In this embodiment, the temperature detection module includes a temperature sensor (NTC) and a PCM cell protection board. Since charging and discharging of the docking station will cause the battery core to heat up, and excessive temperature of the battery core will lead to safety risks such as explosion of the docking station, so this embodiment uses a temperature detection module to monitor the temperature of the battery core and protect the circuit of the docking station to ensure battery life. The core operates within a suitable temperature range. For example, if the battery core temperature is too high, the NTC (temperature sensor) temperature-sensitive resistor will become smaller as the temperature is too high. The temperature detection module will send the sampled value to the microcontroller, and the internal A/D conversion program of the microcontroller will sample the value. The value is processed and it is found that the specific temperature of the battery core is too high. At this time, the microcontroller controls the PCM battery core protection board and uses the electrical circuit to stop working, thereby stopping the work of the battery core; when the NTC detects that the battery core temperature drops to a suitable temperature for operation, the microcontroller controls the PCM battery core protection board through the PCM battery core protection board. , open the battery working circuit.
可选地，如图4所示，当电量按键按下被单片机的GPIO-B检测到后，单片机通过电芯电量采样线路，对电芯电量进行采样并送到单片机，由单片机内部A/D转换程序处理后，发给GPIO-A，驱动LCD显示出具体的数字值电量。Optionally, as shown in Figure 4, when the power button is pressed and detected by the GPIO-B of the microcontroller, the microcontroller samples the battery power through the battery power sampling circuit and sends it to the microcontroller. The internal A/D of the microcontroller After the conversion program is processed, it is sent to GPIO-A to drive the LCD to display the specific digital value of electricity.
在本申请所提供的几个实施例中，可以理解的是，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意的是，在有些作为替换的实现方式中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。In several embodiments provided in this application, it can be understood that each box in the flowchart or block diagram may represent a module, program segment, or part of the code, and the module, program segment, or part of the code includes One or more executable instructions used to implement specified logical functions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved.
所述功能如果以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .
以上所述的具体实施例，对本申请的目的、技术方案和有益效果进行了进一步的详细说明，应当理解，以上所述仅为本申请的具体实施例而已，并不用于限定本申请的保护范围。特别指出，对于本领域技术人员来说，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific embodiments of the present application and are not intended to limit the scope of protection of the present application. . It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311382579.8ACN117572949A (en) | 2023-10-24 | 2023-10-24 | Docking station and power supply method thereof |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311382579.8ACN117572949A (en) | 2023-10-24 | 2023-10-24 | Docking station and power supply method thereof |
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| CN117572949Atrue CN117572949A (en) | 2024-02-20 |
| Application Number | Title | Priority Date | Filing Date |
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| CN202311382579.8APendingCN117572949A (en) | 2023-10-24 | 2023-10-24 | Docking station and power supply method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119200805A (en)* | 2024-08-22 | 2024-12-27 | 深圳市海盈智联实业有限公司 | A method and system for monitoring power supply of an expansion dock |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119200805A (en)* | 2024-08-22 | 2024-12-27 | 深圳市海盈智联实业有限公司 | A method and system for monitoring power supply of an expansion dock |
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