CN105552978A - Charging circuit, rechargeable cell, and user terminal - Google Patents
Charging circuit, rechargeable cell, and user terminal Download PDFInfo
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Abstract
本发明提供一种充电电路，用于为可充电电池充电，所述充电电路包括充电芯片、保护电路及电池保护板，所述充电芯片及保护电路均设置于所述电池保护板上，所述电池保护板设置于所述可充电电池内，所述充电芯片与所述保护电路电性连接，所述保护电路与所述可充电电池的电芯电性连接，所述充电芯片用于为所述电芯提供充电电压和充电电流，所述保护电路用于为所述电芯提供过充电或过放电保护。本发明还提供一种可充电电池及用户终端。所述充电电路可以减小充电芯片与电芯之间的线路损耗电压，提升充电效率。
The present invention provides a charging circuit for charging a rechargeable battery. The charging circuit includes a charging chip, a protection circuit and a battery protection board. Both the charging chip and the protection circuit are arranged on the battery protection board. The battery protection board is set in the rechargeable battery, the charging chip is electrically connected to the protection circuit, the protection circuit is electrically connected to the cell of the rechargeable battery, and the charging chip is used for The battery core provides charging voltage and charging current, and the protection circuit is used to provide overcharge or overdischarge protection for the battery core. The invention also provides a rechargeable battery and a user terminal. The charging circuit can reduce the line loss voltage between the charging chip and the battery cell, and improve the charging efficiency.
Description
技术领域technical field
本发明涉及快速充电领域，尤其涉及一种充电电路、可充电电池及用户终端。The invention relates to the field of fast charging, in particular to a charging circuit, a rechargeable battery and a user terminal.
背景技术Background technique
在现有的智能手机、平板电脑等用户终端的充电电路中，充电芯片大都设置于主板上，充电芯片的输出端通过主板上的PCB走线与电池连接器连接，电池连接器再通过电池电极及电池内部的FPC与电池保护板上的电池保护电路连接，进而通过保护电路与电芯连接，如图1所示。这种充电电路结构由于充电芯片与电芯之间存在较大的路径阻抗，当充电芯片工作于恒流输出模式时，由于是大电流输出，导致在该路径两端形成较大的线路损耗电压。然而，充电芯片是通过检测其输出端电压是否达到预设电压阈值来切换恒压输出模式，由于所述线路损耗电压的存在，使得充电芯片的输出电压实际上为电芯电压与所述线路损耗电压之和，导致充电芯片过早进入恒压输出模式，充电时间延长。例如，恒流输出模式下所述线路损耗电压为0.45V，则当所述电芯电压上升至3.9V时，所述充电芯片的输出电压达到预设电压阈值4.35V，进而切换为恒压输出模式，而在恒压输出模式下，由于充电电流逐渐下降，导致充电速度较慢。因此，现有的充电电路中，由于线路损耗电压较大，使得充电芯片过早地进入恒压输出模式，导致充电时间延长。In existing charging circuits for user terminals such as smartphones and tablet computers, the charging chip is mostly set on the main board, and the output end of the charging chip is connected to the battery connector through the PCB trace on the main board, and the battery connector is connected to the battery through the battery electrode. And the FPC inside the battery is connected to the battery protection circuit on the battery protection board, and then connected to the battery cell through the protection circuit, as shown in Figure 1. Due to the large path impedance between the charging chip and the battery cell in this charging circuit structure, when the charging chip works in the constant current output mode, due to the large current output, a large line loss voltage is formed at both ends of the path. . However, the charging chip switches the constant voltage output mode by detecting whether the output terminal voltage reaches the preset voltage threshold. Due to the existence of the line loss voltage, the output voltage of the charging chip is actually the cell voltage and the line loss voltage. The sum of the voltage causes the charging chip to enter the constant voltage output mode prematurely, and the charging time is prolonged. For example, in the constant current output mode, the line loss voltage is 0.45V, then when the cell voltage rises to 3.9V, the output voltage of the charging chip reaches the preset voltage threshold of 4.35V, and then switches to constant voltage output mode, while in the constant voltage output mode, the charging speed is slower due to the gradual decrease of the charging current. Therefore, in the existing charging circuit, due to the large line loss voltage, the charging chip enters the constant voltage output mode prematurely, resulting in prolonged charging time.
发明内容Contents of the invention
鉴于现有技术中存在的问题，本发明提供一种充电电路，通过将充电芯片设置到电池保护板上，以减小充电芯片与电芯之间的线路损耗电压，缩短充电时间，提升充电效率。In view of the problems existing in the prior art, the present invention provides a charging circuit. By setting the charging chip on the battery protection board, the line loss voltage between the charging chip and the battery core can be reduced, the charging time can be shortened, and the charging efficiency can be improved. .
另，本发明还提供一种应用所述充电电路的可充电电池。In addition, the present invention also provides a rechargeable battery using the charging circuit.
另，本发明还提供一种应用所述充电电路或所述可充电电池的用户终端。In addition, the present invention also provides a user terminal using the charging circuit or the rechargeable battery.
一种充电电路，用于为可充电电池充电，所述充电电路包括充电芯片、保护电路及电池保护板，所述充电芯片及保护电路均设置于所述电池保护板上，所述电池保护板设置于所述可充电电池内，所述充电芯片与所述保护电路电性连接，所述保护电路与所述可充电电池的电芯电性连接，所述充电芯片用于为所述电芯提供充电电压和充电电流，所述保护电路用于为所述电芯提供过充电或过放电保护。A charging circuit for charging a rechargeable battery, the charging circuit includes a charging chip, a protection circuit and a battery protection board, the charging chip and the protection circuit are all arranged on the battery protection board, and the battery protection board Set in the rechargeable battery, the charging chip is electrically connected to the protection circuit, the protection circuit is electrically connected to the battery cell of the rechargeable battery, and the charging chip is used for charging the battery cell A charging voltage and a charging current are provided, and the protection circuit is used to provide overcharging or overdischarging protection for the battery cell.
其中，所述充电芯片包括恒流输出模式和恒压输出模式，当所述充电芯片工作于恒流输出模式时，所述充电芯片与所述电芯之间形成线路损耗电压，所述充电芯片的输出电压为所述电芯的电压与所述线路损耗电压之和，当所述充电芯片的输出电压达到预设阈值电压时，所述充电芯片由恒流输出模式转换为恒压输出模式。Wherein, the charging chip includes a constant current output mode and a constant voltage output mode, when the charging chip works in the constant current output mode, a line loss voltage is formed between the charging chip and the battery core, and the charging chip The output voltage of the charging chip is the sum of the voltage of the battery cell and the line loss voltage. When the output voltage of the charging chip reaches a preset threshold voltage, the charging chip switches from the constant current output mode to the constant voltage output mode.
其中，所述充电芯片与所述保护电路相互间隔地设置于所述电池保护板上，所述充电芯片通过所述保护电路与所述电芯电性连接。Wherein, the charging chip and the protection circuit are arranged on the battery protection board at a distance from each other, and the charging chip is electrically connected to the battery cell through the protection circuit.
其中，所述保护电路集成于所述充电芯片内，所述充电芯片直接与所述电芯电性连接。Wherein, the protection circuit is integrated in the charging chip, and the charging chip is directly electrically connected with the battery cell.
一种可充电电池，包括充电芯片、保护电路、电池保护板及电芯，所述充电芯片及保护电路均设置于所述电池保护板上，所述电池保护板设置于所述可充电电池内，所述充电芯片与所述保护电路电性连接，所述保护电路与所述电芯电性连接，所述充电芯片用于为所述电芯提供充电电压和充电电流，所述保护电路用于为所述电芯提供过充电或过放电保护。A rechargeable battery, including a charging chip, a protection circuit, a battery protection board, and a battery cell, the charging chip and the protection circuit are all arranged on the battery protection board, and the battery protection board is arranged in the rechargeable battery , the charging chip is electrically connected to the protection circuit, the protection circuit is electrically connected to the battery core, the charging chip is used to provide charging voltage and charging current for the battery core, and the protection circuit is used for To provide overcharge or overdischarge protection for the battery cell.
其中，所述充电芯片包括恒流输出模式和恒压输出模式，当所述充电芯片工作于恒流输出模式时，所述充电芯片与所述电芯之间形成线路损耗电压，所述充电芯片的输出电压为所述电芯的电压与所述线路损耗电压之和，当所述充电芯片的输出电压达到预设阈值电压时，所述充电芯片由恒流输出模式转换为恒压输出模式。Wherein, the charging chip includes a constant current output mode and a constant voltage output mode, when the charging chip works in the constant current output mode, a line loss voltage is formed between the charging chip and the battery core, and the charging chip The output voltage of the charging chip is the sum of the voltage of the battery cell and the line loss voltage. When the output voltage of the charging chip reaches a preset threshold voltage, the charging chip switches from the constant current output mode to the constant voltage output mode.
其中，所述充电芯片与所述保护电路相互间隔设置于所述电池保护板上，所述充电芯片通过所述保护电路与所述电芯电性连接。Wherein, the charging chip and the protection circuit are spaced apart from each other on the battery protection board, and the charging chip is electrically connected to the battery cell through the protection circuit.
其中，所述保护电路集成于所述充电芯片内，所述充电芯片直接与所述电芯电性连接。Wherein, the protection circuit is integrated in the charging chip, and the charging chip is directly electrically connected with the battery cell.
一种用户终端，包括可充电电池和充电电路，所述充电电路包括充电芯片、保护电路及电池保护板，所述充电芯片及保护电路均设置于所述电池保护板上，所述电池保护板设置于所述可充电电池内，所述充电芯片与所述保护电路电性连接，所述保护电路与所述可充电电池的电芯电性连接，所述充电芯片用于为所述电芯提供充电电压和充电电流，所述保护电路用于为所述电芯提供过充电或过放电保护。A user terminal, including a rechargeable battery and a charging circuit, the charging circuit includes a charging chip, a protection circuit and a battery protection board, the charging chip and the protection circuit are all arranged on the battery protection board, and the battery protection board Set in the rechargeable battery, the charging chip is electrically connected to the protection circuit, the protection circuit is electrically connected to the battery cell of the rechargeable battery, and the charging chip is used for charging the battery cell A charging voltage and a charging current are provided, and the protection circuit is used to provide overcharging or overdischarging protection for the battery cell.
一种用户终端，包括可充电电池，所述可充电电池包括充电芯片、保护电路、电池保护板及电芯，所述充电芯片及保护电路均设置于所述电池保护板上，所述电池保护板设置于所述可充电电池内，所述充电芯片与所述保护电路电性连接，所述保护电路与所述电芯电性连接，所述充电芯片用于为所述电芯提供充电电压和充电电流，所述保护电路用于为所述电芯提供过充电或过放电保护。A user terminal, including a rechargeable battery, the rechargeable battery includes a charging chip, a protection circuit, a battery protection board and a battery cell, the charging chip and the protection circuit are all arranged on the battery protection board, and the battery protection The board is set in the rechargeable battery, the charging chip is electrically connected to the protection circuit, the protection circuit is electrically connected to the battery cell, and the charging chip is used to provide charging voltage for the battery cell and charging current, the protection circuit is used to provide overcharge or overdischarge protection for the battery cell.
所述充电电路通过将充电芯片设置到电池保护板上，从而可以有效减小在恒流输出模式下充电芯片与可充电电池的电芯之间的线路损耗电压，缩短恒压输出模式的充电时间，提升充电效率。The charging circuit can effectively reduce the line loss voltage between the charging chip and the battery cell of the rechargeable battery in the constant current output mode by setting the charging chip on the battery protection board, and shorten the charging time in the constant voltage output mode , to improve charging efficiency.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1是现有技术中充电电路的结构示意图。FIG. 1 is a schematic structural diagram of a charging circuit in the prior art.
图2是本发明第一实施例的充电电路的结构示意图。FIG. 2 is a schematic structural diagram of a charging circuit according to a first embodiment of the present invention.
图3是本发明第一实施例的充电电路的另一结构示意图。FIG. 3 is another structural schematic diagram of the charging circuit of the first embodiment of the present invention.
图4是本发明第二实施例的可充电电池的结构示意图。FIG. 4 is a schematic structural diagram of a rechargeable battery according to a second embodiment of the present invention.
图5是本发明第二实施例的可充电电池的另一结构示意图。FIG. 5 is another structural schematic diagram of the rechargeable battery according to the second embodiment of the present invention.
具体实施方式detailed description
下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图2，本发明实施例提供一种充电电路100，用于为可充电电池200充电，所述充电电路100包括充电芯片110、保护电路130及电池保护板150，所述充电芯片110及保护电路130均设置于所述电池保护板150上，所述电池保护板150设置于所述可充电电池200内，所述充电芯片110与所述保护电路130电性连接，所述保护电路130与所述可充电电池200的电芯270电性连接，所述充电芯片110用于为所述电芯270提供充电电压和充电电流，所述保护电路130用于为所述电芯270提供过充电或过放电保护。Please refer to FIG. 2 , an embodiment of the present invention provides a charging circuit 100 for charging a rechargeable battery 200, the charging circuit 100 includes a charging chip 110, a protection circuit 130 and a battery protection board 150, the charging chip 110 and The protection circuit 130 is arranged on the battery protection board 150, the battery protection board 150 is arranged in the rechargeable battery 200, the charging chip 110 is electrically connected to the protection circuit 130, and the protection circuit 130 It is electrically connected with the cell 270 of the rechargeable battery 200, the charging chip 110 is used to provide charging voltage and charging current for the cell 270, and the protection circuit 130 is used to provide the cell 270 with an overvoltage. charging or over-discharging protection.
所述充电电路100还包括主板170，所述主板170可以是手机、平板电脑等用户终端的电路板，所述充电芯片110与所述主板170电性连接，以从所述主板170获取电源电压。可以理解，所述主板170上可包括充电接口(如USB接口，图未示)，所述充电芯片110与所述充电接口电性连接，以从所述充电接口获取电源电压。The charging circuit 100 also includes a main board 170, the main board 170 may be a circuit board of a user terminal such as a mobile phone, a tablet computer, etc., the charging chip 110 is electrically connected to the main board 170 to obtain a power supply voltage from the main board 170 . It can be understood that the motherboard 170 may include a charging interface (such as a USB interface, not shown in the figure), and the charging chip 110 is electrically connected to the charging interface to obtain a power supply voltage from the charging interface.
所述充电芯片110包括恒流输出模式和恒压输出模式，当所述充电芯110片工作于恒流输出模式时，所述充电芯片110与所述电芯270之间形成线路损耗电压，所述充电芯片110的输出电压为所述电芯270的电压与所述线路损耗电压之和，当所述充电芯片110的输出电压达到预设阈值电压时，所述充电芯片110由恒流输出模式转换为恒压输出模式。The charging chip 110 includes a constant current output mode and a constant voltage output mode. When the charging core 110 works in the constant current output mode, a line loss voltage is formed between the charging chip 110 and the battery core 270, so The output voltage of the charging chip 110 is the sum of the voltage of the battery cell 270 and the line loss voltage. When the output voltage of the charging chip 110 reaches a preset threshold voltage, the charging chip 110 will switch from the constant current output mode Convert to constant voltage output mode.
具体地，在所述恒流输出模式下，所述充电芯片110以恒定的大电流为所述电芯270充电。由于充电电流较大，导致所述充电芯片110与所述电芯270之间形成线路损耗电压。同时，随着充电时间的持续，所述电芯270的电压不断升高。所述充电芯片110的输出电压为所述电芯270的电压与所述线路损耗电压之和。在充电过程中，所述充电芯片110检测其输出电压是否达到预设阈值电压，当所述充电芯片110检测到其输出电压达到预设阈值电压时，所述充电芯110片由恒流输出模式转换为恒压输出模式。在恒压输出模式下，所述充电芯片110以恒定的电压为所述电芯270充电，同时，所述充电芯片110输出电流逐渐减小至一预设下限值时完成充电。其中，所述预设电压阈值为所述可充电电池200的充电限制电压。在本实施例中，由于所述充电芯片110设置于所述电池保护板150上，使得所述充电芯片110与所述电芯270之间的连接线路较短。因此，在所述充电芯片110工作于恒流输出模式下时，所述充电芯片110与所述电芯270之间的线路损耗电压较小，进而使得所述充电芯片110可以较长时间地处于恒流输出模式，以大电流为所述电芯270充电，而较短时间地处于恒压输出模式，以缩短充电时间，提升充电效率。Specifically, in the constant current output mode, the charging chip 110 charges the battery cell 270 with a constant high current. Due to the large charging current, a line loss voltage is formed between the charging chip 110 and the battery cell 270 . At the same time, as the charging time continues, the voltage of the battery cell 270 increases continuously. The output voltage of the charging chip 110 is the sum of the voltage of the battery cell 270 and the line loss voltage. During the charging process, the charging chip 110 detects whether its output voltage reaches a preset threshold voltage. Convert to constant voltage output mode. In the constant voltage output mode, the charging chip 110 charges the battery cell 270 with a constant voltage, and meanwhile, the charging is completed when the output current of the charging chip 110 gradually decreases to a preset lower limit. Wherein, the preset voltage threshold is the charging limit voltage of the rechargeable battery 200 . In this embodiment, since the charging chip 110 is disposed on the battery protection board 150 , the connection line between the charging chip 110 and the battery cell 270 is relatively short. Therefore, when the charging chip 110 is working in the constant current output mode, the line loss voltage between the charging chip 110 and the battery cell 270 is small, so that the charging chip 110 can be in the constant current output mode for a long time. In the constant current output mode, the battery cell 270 is charged with a large current, and is in the constant voltage output mode for a short time, so as to shorten the charging time and improve the charging efficiency.
例如，假设所述可充电电池200的容量为3000mAh，充电限制电压为4.35V。当以1.5C的充电电流为所述可充电电池200充电时，所述充电芯片110首先以1.5C的恒定电流为所述可充电电池200充电，当所述可充电电池200的电芯270的电压和所述线路损耗电压之和上升至所述充电限制电压4.35V时，所述充电芯片110切换至恒压输出模式，以恒定的输出电压(即4.35V)为所述可充电电池200充电，同时所述充电芯片110逐渐减小输出电流，直至所述输出电流减小至一预设下限值(如100mA)时，完成对所述可充电电池200的充电。For example, suppose the capacity of the rechargeable battery 200 is 3000mAh, and the charging limit voltage is 4.35V. When charging the rechargeable battery 200 with a charging current of 1.5C, the charging chip 110 first charges the rechargeable battery 200 with a constant current of 1.5C. When the sum of the voltage and the line loss voltage rises to the charging limit voltage 4.35V, the charging chip 110 switches to the constant voltage output mode to charge the rechargeable battery 200 with a constant output voltage (ie 4.35V). , and at the same time, the charging chip 110 gradually reduces the output current until the output current decreases to a preset lower limit (such as 100mA), and the charging of the rechargeable battery 200 is completed.
在本实施例中，所述充电芯片110与所述保护电路130相互间隔地设置于所述电池保护板150上，所述充电芯片110通过所述保护电路130与所述电芯270电性连接。In this embodiment, the charging chip 110 and the protection circuit 130 are arranged on the battery protection board 150 at a distance from each other, and the charging chip 110 is electrically connected to the battery cell 270 through the protection circuit 130 .
请参阅图3，本发明第一实施例还提供另一种结构的充电电路100’。在所述充电电路100’中，所述保护电路130集成于所述充电芯片110内，所述充电芯片110直接与所述电芯270电性连接。可以理解，所述充电电路100’的各组成部分的功能与所述充电电路100相同，此处不再赘述。Referring to Fig. 3, the first embodiment of the present invention also provides another charging circuit 100'. In the charging circuit 100', the protection circuit 130 is integrated in the charging chip 110, and the charging chip 110 is directly electrically connected to the battery cell 270. It can be understood that the functions of the components of the charging circuit 100' are the same as those of the charging circuit 100, and will not be repeated here.
请参阅图4，本发明第二实施例提供一种可充电电池200，包括充电芯片210、保护电路230、电池保护板250及电芯270，所述充电芯片210及保护电路230均设置于所述电池保护板250上，所述电池保护板250设置于所述可充电电池200内，所述充电芯片210与所述保护电路230电性连接，所述保护电路230与所述电芯270电性连接，所述充电芯片210用于为所述电芯270提供充电电压和充电电流，所述保护电路230用于为所述电芯270提供过充电或过放电保护。Please refer to FIG. 4 , the second embodiment of the present invention provides a rechargeable battery 200, including a charging chip 210, a protection circuit 230, a battery protection board 250 and a battery cell 270, and the charging chip 210 and the protection circuit 230 are all arranged on the On the battery protection board 250, the battery protection board 250 is set in the rechargeable battery 200, the charging chip 210 is electrically connected to the protection circuit 230, and the protection circuit 230 is electrically connected to the battery cell 270. The charging chip 210 is used to provide charging voltage and charging current for the battery cell 270, and the protection circuit 230 is used to provide overcharge or overdischarge protection for the battery cell 270.
所述充电芯片210包括恒流输出模式和恒压输出模式，当所述充电芯210片工作于恒流输出模式时，所述充电芯片2110与所述电芯270之间形成线路损耗电压，所述充电芯片210的输出电压为所述电芯270的电压与所述线路损耗电压之和，当所述充电芯片210的输出电压达到预设阈值电压时，所述充电芯片210由恒流输出模式转换为恒压输出模式。The charging chip 210 includes a constant current output mode and a constant voltage output mode. When the charging core 210 works in the constant current output mode, a line loss voltage is formed between the charging chip 2110 and the battery core 270, so The output voltage of the charging chip 210 is the sum of the voltage of the battery cell 270 and the line loss voltage. When the output voltage of the charging chip 210 reaches a preset threshold voltage, the charging chip 210 will switch from the constant current output mode Convert to constant voltage output mode.
在本实施例中，所述充电芯片210与所述保护电路230相互间隔设置于所述电池保护板250上，所述充电芯片210通过所述保护电路230与所述电芯270电性连接。In this embodiment, the charging chip 210 and the protection circuit 230 are arranged on the battery protection board 250 at intervals, and the charging chip 210 is electrically connected to the battery cell 270 through the protection circuit 230 .
可以理解，所述可充电电池200的各组成部分的功能与本发明第一实施例所述的充电电路100的各组成部分相同，具体可参照本发明第一实施例中的描述，此处不再赘述。It can be understood that the functions of the various components of the rechargeable battery 200 are the same as those of the various components of the charging circuit 100 described in the first embodiment of the present invention. For details, refer to the description in the first embodiment of the present invention. Let me repeat.
请参阅图5，本发明第二实施例还提供另一种结构的可充电电池200’。在所述可充电电池200’中，所述保护电路230集成于所述充电芯片210内，所述充电芯片210直接与所述电芯270电性连接。可以理解，所述可充电电池200’的各组成部分的功能与所述可充电电池200相同，此处不再赘述。Referring to Fig. 5, the second embodiment of the present invention also provides another structure of a rechargeable battery 200'. In the rechargeable battery 200', the protection circuit 230 is integrated in the charging chip 210, and the charging chip 210 is directly electrically connected to the battery cell 270. It can be understood that the functions of the components of the rechargeable battery 200' are the same as those of the rechargeable battery 200, and will not be repeated here.
此外，本发明还提供一种用户终端，包括可充电电池和充电电路。其中，所述可充电电池为普通可充电电池，如锂电池。所述充电电路与本发明第一实施例所述的充电电路100具有相同的功能和结构，具体可参照本发明第一实施例中的描述，此处不再赘述。In addition, the present invention also provides a user terminal, including a rechargeable battery and a charging circuit. Wherein, the rechargeable battery is an ordinary rechargeable battery, such as a lithium battery. The charging circuit has the same function and structure as the charging circuit 100 described in the first embodiment of the present invention. For details, please refer to the description in the first embodiment of the present invention, which will not be repeated here.
此外，本发明还提供另一种用户终端，包括可充电电池。其中，所述可充电电池与本发明第二实施例所述的可充电电池200具有相同的功能和结构，具体可参照本发明第二实施例中的描述，此处不再赘述。In addition, the present invention also provides another user terminal including a rechargeable battery. Wherein, the rechargeable battery has the same function and structure as the rechargeable battery 200 described in the second embodiment of the present invention. For details, please refer to the description in the second embodiment of the present invention, which will not be repeated here.
所述充电电路100通过将充电芯片110设置到所述电池保护板150上，从而可以有效减小在恒流输出模式下充电芯片110与可充电电池的电芯270之间的线路损耗电压，缩短恒压输出模式的充电时间，提升充电效率。The charging circuit 100 can effectively reduce the line loss voltage between the charging chip 110 and the battery cell 270 of the rechargeable battery in the constant current output mode by setting the charging chip 110 on the battery protection board 150, and shorten Charging time in constant voltage output mode improves charging efficiency.
以上所揭露的仅为本发明的优选实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。What is disclosed above is only a preferred embodiment of the present invention, and certainly cannot limit the scope of rights of the present invention with this. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above embodiments, and make according to the claims of the present invention The equivalent changes still belong to the scope covered by the invention.
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