Battery protection board and battery
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2026-08-14
AI Technical Summary
[0003]在相关技术中，电池保护板的第一区域（例如硬性电路板）上设置有多个功能模块，多个功能模块分别与电池保护板的第二区域（例如柔性电路板）上的电池连接器通过信号线电连接，因此，从第一区域到第二区域（即硬性电路板到柔性电路板），除从电芯正极（B+）到电池连接器正极（P+）、以及电芯负极（B-）到电池连接器负极（P-）的两个主电流路径（大电流走线）之外，还存在多个信号线占据电池保护板的布局空间，进而导致主电流路径布局空间小，不利于大电流通流、散热
[0015]本申请实施例提供一种电池保护板，该电池保护板包括防伪芯片、第一保护装置和电池连接器，防伪芯片设置于电池保护板的第一区域，防伪芯片包括控制模块、防伪模块和通断模块，控制模块分别与电池连接器的控制信号端、防伪模块以及通断模块的控制端电连接，通断模块的第一端与第一保护装置的电源端电连接，通断模块的第二端与电芯的负极极耳电连接，电池连接器设置于电池保护板的第二区域，电池连接器的正极与电芯的正极极耳电连接，电池连接器的负极通过第一保护装置与电芯的负极极耳电连接，该第二区域为电池保护板上与上述第一区域不同的区域，第一保护装置设置于第一区域。采用本申请的方案，只需要通过电池连接器的控制信号端向控制模块发送防伪通讯指令，即可获取防伪模块的防伪数据，只需要通过电池连接器的控制信号端向控制模块发送关断指令，即可通过通断模块实现对第一保护装置的控制，不需要在电池连接器与防伪模块之间、以及电池连接器与第一保护装置之间分别单独布置信号线，能够减少电池保护板第一区域与电池保护板第二区域之间信号线的数量，进而减少信号线对电池保护板布局空间的占用，增大从电芯正极到电池连接器正极、以及电芯负极到电池连接器负极两个主电流路径的布局空间，以利于大电流通流、降内阻、散热。
Smart Images
Figure CN224637245U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to a battery protection board and a battery. Background Technology
[0002] With the rapid development of mobile terminal battery technology, large-capacity batteries bring about a continuous increase in the demand for charging and discharging current, which puts forward more stringent technical requirements for temperature rise control under high current conditions.
[0003] In related technologies, a number of functional modules are provided on the first area of the battery protection board (e.g., a rigid circuit board). These functional modules are electrically connected to the battery connector on the second area of the battery protection board (e.g., a flexible circuit board) via signal lines. Therefore, from the first area to the second area (i.e., from the rigid circuit board to the flexible circuit board), in addition to the two main current paths (high current traces) from the positive terminal of the battery cell (B+) to the positive terminal of the battery connector (P+) and from the negative terminal of the battery cell (B-) to the negative terminal of the battery connector (P-), there are also multiple signal lines occupying the layout space of the battery protection board. This results in a small layout space for the main current paths, which is not conducive to high current flow and heat dissipation. Utility Model Content
[0004] This application discloses a battery protection board and a battery that can increase the layout space of the main current path.
[0005] In a first aspect, embodiments of this application disclose a battery protection board, comprising: an anti-counterfeiting chip, a first protection device, and a battery connector, wherein: the anti-counterfeiting chip is disposed in a first region of the battery protection board, the anti-counterfeiting chip includes a control module, an anti-counterfeiting module, and a switching module, the control module is electrically connected to the control signal terminal of the battery connector, the anti-counterfeiting module, and the control terminal of the switching module, respectively, the first terminal of the switching module is electrically connected to the power supply terminal of the first protection device, and the second terminal of the switching module is electrically connected to the negative terminal tab of the battery cell; the battery connector is disposed in a second region of the battery protection board, the positive terminal of the battery connector is electrically connected to the positive terminal tab of the battery cell, and the negative terminal of the battery connector is electrically connected to the negative terminal tab of the battery cell through the first protection device, wherein the second region is a region on the battery protection board different from the first region; the first protection device is disposed in the first region.
[0006] Optionally, the system further includes a first temperature detection device, the control module being electrically connected to the first temperature detection device, the first temperature detection device being disposed in the first area, and the first temperature detection device being used to detect temperature data of the first detection area of the battery cell.
[0007] Optionally, the anti-counterfeiting chip further includes a temperature acquisition module. The control module is electrically connected to the temperature acquisition module. The temperature acquisition module is electrically connected to the first temperature detection device through the first pin of the anti-counterfeiting chip. The temperature acquisition module is used to process the temperature data detected by the first temperature detection device.
[0008] Optionally, it further includes a second temperature detection device, which is disposed in the first area. The temperature acquisition module is electrically connected to the second temperature detection device through the second pin of the anti-counterfeiting chip. The second temperature detection device is used to detect the temperature data of the second detection area of the battery cell. The temperature acquisition module is also used to process the temperature data detected by the second temperature detection device. The second detection area of the battery cell is an area on the battery cell that is different from the first detection area of the battery cell.
[0009] Optionally, the anti-counterfeiting chip further includes a cell voltage sampling module. The control module is electrically connected to the cell voltage sampling module. The first sampling terminal of the cell voltage sampling module is electrically connected to the first tab of the cell through the third pin of the anti-counterfeiting chip. The second sampling terminal of the cell voltage sampling module is electrically connected to the second tab of the cell through the fourth pin of the anti-counterfeiting chip. The first tab is a positive tab, and the second tab is a negative tab.
[0010] Optionally, if the battery cell further includes a third tab, the third sampling terminal of the battery cell voltage sampling module is electrically connected to the third tab through the fifth pin of the anti-counterfeiting chip, wherein the third tab is a positive tab or a negative tab.
[0011] Optionally, the third pin has a withstand voltage greater than 12V.
[0012] Optionally, the first end of the switching module is electrically connected to the power supply terminal of the first protection device through the sixth pin of the anti-counterfeiting chip, the power supply terminal of the first protection device is electrically connected to the first tab through the first resistor, the second end of the switching module is electrically connected to the fourth pin, and the fourth pin is electrically connected to the second tab through the second resistor.
[0013] Optionally, it also includes a second protection device, which is disposed in the first area and is electrically connected to the first protection device and the battery cell, respectively.
[0014] Secondly, embodiments of this application disclose a battery, including a battery cell and the battery protection board described in the first aspect, wherein the battery cell is electrically connected to the battery protection board.
[0015] This application provides a battery protection board, which includes an anti-counterfeiting chip, a first protection device, and a battery connector. The anti-counterfeiting chip is disposed in a first area of the battery protection board and includes a control module, an anti-counterfeiting module, and a switching module. The control module is electrically connected to the control signal terminal of the battery connector, the control terminal of the anti-counterfeiting module, and the control terminal of the switching module. The first terminal of the switching module is electrically connected to the power supply terminal of the first protection device, and the second terminal of the switching module is electrically connected to the negative terminal tab of the battery cell. The battery connector is disposed in a second area of the battery protection board. The positive terminal of the battery connector is electrically connected to the positive terminal tab of the battery cell, and the negative terminal of the battery connector is electrically connected to the negative terminal tab of the battery cell through the first protection device. The second area is a different area from the first area on the battery protection board, and the first protection device is disposed in the first area. By adopting the solution of this application, it is only necessary to send an anti-counterfeiting communication command to the control module through the control signal terminal of the battery connector to obtain the anti-counterfeiting data of the anti-counterfeiting module. It is only necessary to send a shutdown command to the control module through the control signal terminal of the battery connector to control the first protection device through the on / off module. It is not necessary to arrange signal lines separately between the battery connector and the anti-counterfeiting module, and between the battery connector and the first protection device. This can reduce the number of signal lines between the first area and the second area of the battery protection board, thereby reducing the space occupied by the signal lines on the layout of the battery protection board. It can increase the layout space of the two main current paths from the positive terminal of the cell to the positive terminal of the battery connector, and from the negative terminal of the cell to the negative terminal of the battery connector, so as to facilitate high current flow, reduce internal resistance, and heat dissipation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the first type of battery protection board disclosed in the embodiments of this application;
[0017] Figure 2 This is a schematic diagram of the structure of an anti-counterfeiting chip disclosed in an embodiment of this application;
[0018] Figure 3 This is a schematic diagram of the structure of the second type of battery protection board disclosed in the embodiments of this application;
[0019] Figure 4 This is a schematic diagram of the structure of the third type of battery protection board disclosed in the embodiments of this application;
[0020] Figure 5 This is a schematic diagram of the structure of the fourth type of battery protection board disclosed in the embodiments of this application;
[0021] Figure 6 This is a schematic diagram of the structure of the fifth type of battery protection board disclosed in the embodiments of this application.
[0022] Figure label:
[0023] 110 - First area of battery protection board, 120 - Second area of battery protection board, 130 - Anti-counterfeiting chip, 131 - Control module, 132 - Anti-counterfeiting module, 133 - On / off module, 134 - Temperature acquisition module, 135 - Cell voltage sampling module, 140 - First protection device, 150 - Battery connector, 160 - Cell, 170 - First temperature detection device, 180 - Second protection device. Detailed Implementation
[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0026] This application discloses a battery protection board and a battery. Figure 1 This is a schematic diagram of the structure of a battery protection board disclosed in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of an anti-counterfeiting chip disclosed in an embodiment of this application.
[0027] like Figure 1 and Figure 2As shown, the battery protection board disclosed in this application includes: an anti-counterfeiting chip 130, a first protection device 140, and a battery connector 150. The anti-counterfeiting chip 130 is disposed in the first region 110 of the battery protection board. The anti-counterfeiting chip 130 includes a control module 131, an anti-counterfeiting module 132, and a switching module 133. The control module 131 is electrically connected to the control signal terminal of the battery connector 150, the control terminal of the anti-counterfeiting module 132, and the control terminal of the switching module 133. The first terminal of the switching module 133 is connected to the power supply of the first protection device 140. The second terminal of the on / off module 133 is electrically connected to the negative terminal tab of the battery cell; the battery connector 150 is disposed in the second region 120 of the battery protection board, the positive terminal of the battery connector 150 is electrically connected to the positive terminal tab of the battery cell 160, and the negative terminal of the battery connector 150 is electrically connected to the negative terminal tab of the battery cell 160 through the first protection device 140. The second region 120 is a region on the battery protection board that is different from the first region 110; the first protection device 140 is disposed in the first region 110.
[0028] In this application, as Figure 1 and Figure 2 As shown, the control module 131 is electrically connected to the control signal terminal of the battery connector 150 via the SWI pin of the anti-counterfeiting chip 130. The SWI pin is connected to the port of the entire device (i.e., the electronic device equipped with a battery including the aforementioned battery protection board) via the battery connector 150. In this application, the first area 110 of the battery protection board can be a rigid circuit board, and the second area 120 of the battery protection board can be a flexible circuit board.
[0029] It should be noted that the first protection device 140 in this application consists of a battery protection chip, a charging MOSFET, and a discharging MOSFET. The negative terminal of the battery connector 150 is electrically connected to the negative terminal tab of the battery cell 160 through the charging MOSFET and the discharging MOSFET. In addition, the first region 110 of the battery protection board can be electrically connected to the second region 120 of the battery protection board.
[0030] In this application, when the device sends an anti-counterfeiting communication command to the control module 131 of the anti-counterfeiting chip 130 via the control signal terminal of the battery connector 150, the control module 131 obtains the anti-counterfeiting data of the anti-counterfeiting module 132 and sends it to the device; when the device sends a shutdown command to the control module 131 of the anti-counterfeiting chip 130 via the control signal terminal of the battery connector 150, the control module 131 controls the first and second terminals of the on / off module 133 to close, the power supply terminal of the first protection device 140 is short-circuited with the negative electrode tab of the battery cell 160, the voltage of the power supply terminal of the first protection device 140 is insufficient to turn on the MOS transistor controlling charging and discharging in the first protection device 140, the charging path is shut off, and the battery is prohibited from charging.
[0031] Using the solution of this application, it is not necessary to separately arrange signal lines between the battery connector 150 and the anti-counterfeiting module 132, and between the battery connector 150 and the first protection device 140. The corresponding function can be realized simply by sending the corresponding command to the control module 131 through the control signal terminal of the battery connector 150. This can reduce the number of signal lines between the first area 110 and the second area 120 of the battery protection board, thereby reducing the space occupied by the signal lines on the layout of the battery protection board and increasing the layout space of the two main current paths from the positive terminal (B+) of the cell 160 to the positive terminal (P+) of the battery connector 150 and from the negative terminal (B-) of the cell 160 to the negative terminal (P-) of the battery connector 150, so as to facilitate high current flow, reduce internal resistance and heat dissipation.
[0032] This application provides a battery protection board, which includes an anti-counterfeiting chip 130, a first protection device 140, and a battery connector 150. The anti-counterfeiting chip 130 is disposed in a first region 110 of the battery protection board and includes a control module 131, an anti-counterfeiting module 132, and a switching module 133. The control module 131 is electrically connected to the control signal terminal of the battery connector 150, the control terminal of the anti-counterfeiting module 132, and the control terminal of the switching module 133. The first terminal of the switching module 133 is connected to the first protection device. The power supply terminal of 140 is electrically connected, the second terminal of the switching module 133 is electrically connected to the negative terminal tab of the battery cell 160, the battery connector 150 is disposed in the second area 120 of the battery protection board, the positive terminal of the battery connector 150 is electrically connected to the positive terminal tab of the battery cell 160, and the negative terminal of the battery connector 150 is electrically connected to the negative terminal tab of the battery cell 160 through the first protection device 140. The second area 120 is a different area from the first area 110 on the battery protection board, and the first protection device 140 is disposed in the first area 110. Using the solution of this application, it is only necessary to send an anti-counterfeiting communication command to the control module 131 through the control signal terminal of the battery connector 150 to obtain the anti-counterfeiting data of the anti-counterfeiting module 132. It is only necessary to send a shutdown command to the control module 131 through the control signal terminal of the battery connector 150 to control the first protection device 140 through the on / off module 133. It is not necessary to arrange signal lines separately between the battery connector 150 and the anti-counterfeiting module 132, and between the battery connector 150 and the first protection device 140. This can reduce the number of signal lines between the first area 110 and the second area 120 of the battery protection board, thereby reducing the space occupied by the signal lines on the layout of the battery protection board. It can increase the layout space of the two main current paths from the positive terminal of the cell 160 to the positive terminal of the battery connector 150 and from the negative terminal of the cell 160 to the negative terminal of the battery connector 150, so as to facilitate high current flow, reduce internal resistance and heat dissipation.
[0033] In one implementation, such as Figure 1 As shown, the battery protection board may further include a first temperature detection device 170. The control module 131 is electrically connected to the first temperature detection device 170. The first temperature detection device 170 is disposed in the first region 110. The first temperature detection device 170 is used to detect the temperature data of the first detection region of the battery cell 160.
[0034] For example, the first temperature detection device 170 in this application can be a thermistor, such as a negative temperature coefficient (NTC) thermistor. Furthermore, the first temperature detection device 170 can also be other structures capable of temperature detection, and this application does not specifically limit its application in this regard.
[0035] When the whole machine sends a cell temperature sampling command to the control module 131 of the anti-counterfeiting chip 130 through the control signal terminal of the battery connector 150, the control module 131 obtains the temperature data of the first detection area of the cell 160 detected by the first temperature detection device 170 and sends it to the whole machine.
[0036] Using the solution of this application, it is not necessary to arrange a separate signal line between the first temperature detection device 170 and the battery connector 150. The corresponding function can be achieved by sending the cell temperature sampling command to the control module 131 through the control signal terminal of the battery connector 150. This can reduce the number of signal lines between the first area 110 and the second area 120 of the battery protection board, thereby reducing the space occupied by the signal lines on the layout of the battery protection board and increasing the layout space of the two main current paths from the positive terminal (B+) of the cell 160 to the positive terminal (P+) of the battery connector 150 and from the negative terminal (B-) of the cell 160 to the negative terminal (P-) of the battery connector 150, so as to facilitate high current flow, reduce internal resistance and heat dissipation.
[0037] In one implementation, such as Figure 2 As shown, the anti-counterfeiting chip 130 also includes a temperature acquisition module 134. The control module 131 is electrically connected to the temperature acquisition module 134. The temperature acquisition module 134 is electrically connected to the first temperature detection device 170 through the first pin NTC of the anti-counterfeiting chip 130. The temperature acquisition module 134 is used to process the temperature data detected by the first temperature detection device 170.
[0038] In this application, the temperature acquisition module 134 is used to acquire the temperature data detected by the first temperature detection device 170, convert the temperature data from an analog signal to a digital signal, and send it to the control module 131 when the control module 131 receives the cell temperature sampling command sent by the whole machine.
[0039] In one implementation, the battery protection board may further include a second temperature detection device, which is disposed in the first region 110. The temperature acquisition module 134 is electrically connected to the second temperature detection device through the second pin of the anti-counterfeiting chip 130. The second temperature detection device is used to detect the temperature data of the second detection region of the battery cell. The temperature acquisition module 134 is also used to process the temperature data detected by the second temperature detection device. The second detection region of the battery cell is a region on the battery cell that is different from the first detection region of the battery cell.
[0040] It should be noted that the specific structure of the second temperature detection device is similar to that of the first temperature detection device 170, and will not be repeated here. This application uses the first and second temperature detection devices to detect temperature data in two different areas of the battery cell 160.
[0041] In the case of including a larger number of temperature detection devices for detecting the temperature data of the battery cell 160, the anti-counterfeiting chip 130 can be equipped with more temperature detection pins respectively connected to the temperature detection devices and the temperature acquisition module 134. The temperature detection pins correspond one-to-one with the temperature detection devices, and multiple temperature detection pins can be connected to one temperature acquisition module 134. The temperature acquisition module 134 is used to convert the temperature data detected by each temperature detection device from analog signals to digital signals.
[0042] In one implementation, such as Figure 2 As shown, the anti-counterfeiting chip 130 may further include a cell voltage sampling module 135. The control module 131 is electrically connected to the cell voltage sampling module 135. The first sampling terminal of the cell voltage sampling module 135 is electrically connected to the first tab of the cell 160 through the third pin P1 of the anti-counterfeiting chip 130. The second sampling terminal of the cell voltage sampling module 135 is electrically connected to the second tab of the cell 160 through the fourth pin N1 of the anti-counterfeiting chip 130. The first tab is a positive tab, and the second tab is a negative tab.
[0043] When the device sends a cell voltage sampling command to the control module 131 of the anti-counterfeiting chip 130 through the control signal terminal of the battery connector 150, the control module 131 obtains the voltage of the first and second tabs of the cell 160 through the cell voltage sampling module 135 and transmits it to the device. The solution of this application eliminates the need for separate signal lines between the battery connector 150 and the first tab of the battery cell 160, and between the battery connector 150 and the second tab of the battery cell 160. Instead, the voltage of the first and second tabs can be obtained simply by sending a cell voltage sampling command to the control module 131 via the control signal terminal of the battery connector 150. This reduces the number of signal lines between the first region 110 and the second region 120 of the battery protection board, thereby reducing the space occupied by the signal lines on the battery protection board layout. It also increases the layout space for the two main current paths: from the positive terminal (B+) of the battery cell 160 to the positive terminal (P+) of the battery connector 150, and from the negative terminal (B-) of the battery cell 160 to the negative terminal (P-) of the battery connector 150, which facilitates high current flow, reduces internal resistance, and improves heat dissipation.
[0044] In one implementation, such as Figure 2 As shown, when the battery cell 160 also includes a third tab, the third sampling terminal of the battery cell voltage sampling module 135 is electrically connected to the third tab through the fifth pin P2 of the anti-counterfeiting chip 130, wherein the third tab is a positive tab or a negative tab.
[0045] When the battery cell 160 is a three-tab battery cell (two positive and one negative three-tab battery cell or one positive and two negative three-tab battery cell), the anti-counterfeiting chip 130 can be provided with a fifth pin P2. The third sampling terminal of the battery cell voltage sampling module 135 is electrically connected to the third tab of the battery cell 160 through the fifth pin P2 to obtain the voltage of the third tab and send it to the whole machine through the control module 131.
[0046] In this application, the third pin P1 can also function as a power pin, providing power to the anti-counterfeiting chip 130 so that the anti-counterfeiting chip 130 can generate a reference power supply for the battery cell voltage sampling module 135, ensuring AD sampling accuracy. In one implementation, the withstand voltage of the third pin P1 can be greater than 12V, and the withstand voltage of the fifth pin P2 can also be greater than 12V.
[0047] It should be noted that, as Figure 2 As shown, the anti-counterfeiting chip 130 also includes a power negative input pin GND, and the connection method of GND is determined according to actual needs.
[0048] In one implementation, such as Figure 3As shown, the first end of the switching module 133 is electrically connected to the power supply terminal VDD of the first protection device 140 through the sixth pin CNT of the anti-counterfeiting chip 130. The power supply terminal VDD of the first protection device 140 is electrically connected to the first tab B+ through the first resistor R2. The second end of the switching module 133 is electrically connected to the fourth pin N1. The fourth pin N1 is electrically connected to the second tab B- through the second resistor R11.
[0049] The entire device sends a shutdown command to the control module 131 of the anti-counterfeiting chip 130 through the SWI pin of the anti-counterfeiting chip 130. After receiving the shutdown command, the control module 131 controls the first and second terminals of the on / off module 133 to close, so that the sixth pin CNT and the fourth pin N1 are shorted. After the sixth pin CNT and the fourth pin N1 are shorted, the VDD voltage of the battery protection chip U2 is = Vcell (cell voltage) * R2 / (R2 + R11). By adjusting the resistance values of R2 and R11, the VDD voltage of the battery protection chip U2 is insufficient to open Q2, thus achieving the function of preventing battery charging.
[0050] In one implementation, such as Figure 4 and Figure 5 As shown, the battery protection board may further include a second protection device 180, which is disposed in the first region 110. The second protection device 180 is electrically connected to the first protection device 140 and the battery cell 160 respectively, so as to achieve dual protection for the battery cell 160.
[0051] like Figure 5 As shown, in the single-cell bipolar single-connector solution, the anti-counterfeiting chip U3, which integrates the temperature acquisition module 134, cell voltage sampling module 135, on / off module 133, anti-counterfeiting module 132, and control module 131, is used. There is only one signal line between the first area 110 and the second area 120 of the battery protection board, which facilitates high current flow, reduced internal resistance, and heat dissipation in the second area 120 of the battery protection board. Furthermore, according to... Figure 5 The scheme shown involves the entire device sending a shutdown command to the control module 131 via the SWI pin of the anti-counterfeiting chip 130. The control module 131 controls the on / off module 133 to short-circuit the CNT pin and N1 pin of the anti-counterfeiting chip 130. Through the voltage divider of R2 and R11, the VDD voltage of U2 = VDD*(R2 / (R2+R11)) < VDU (over-discharge protection voltage of U2), and U2 enters over-discharge protection. Then, the voltage of the charger and the cell voltage at the output end are controlled to V(P+ / P-)-V(B+ / B-)≤0.2V, thereby shutting off the charging path. After the battery and motherboard are assembled, the battery is shut off and the leakage current of the motherboard is tested.
[0052] like Figure 6 As shown, in the single-cell three-pole dual-connector scheme, the anti-counterfeiting chip 130, which integrates the temperature acquisition module 134, cell voltage sampling module 135, on / off module 133, anti-counterfeiting module 132 and control module 131, is used. There is only one signal line between the first area 110 and the second area 120 of the battery protection board, which is beneficial for the high current flow, reduced internal resistance and heat dissipation of the second area 120 of the battery protection board.
[0053] This application also discloses a battery, including a battery cell 160 and the aforementioned battery protection board, wherein the battery cell 160 is electrically connected to the battery protection board.
[0054] It should be noted that the specific connection method between cell 160 and the battery protection board is the same as described above, and will not be repeated here.
[0055] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.
[0056] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A battery protection board, characterized in that, include: The components include an anti-counterfeiting chip, a first protective device, and a battery connector, among which: The anti-counterfeiting chip is disposed in the first area of the battery protection board. The anti-counterfeiting chip includes a control module, an anti-counterfeiting module, and a switching module. The control module is electrically connected to the control signal terminal of the battery connector, the anti-counterfeiting module, and the control terminal of the switching module. The first terminal of the switching module is electrically connected to the power supply terminal of the first protection device, and the second terminal of the switching module is electrically connected to the negative electrode tab of the battery cell. The battery connector is disposed in the second region of the battery protection board. The positive terminal of the battery connector is electrically connected to the positive terminal tab of the battery cell, and the negative terminal of the battery connector is electrically connected to the negative terminal tab of the battery cell through the first protection device. The second region is a region on the battery protection board that is different from the first region. The first protective device is installed in the first area.
2. The battery protection board according to claim 1, characterized in that, It also includes a first temperature detection device, the control module is electrically connected to the first temperature detection device, the first temperature detection device is disposed in the first area, and the first temperature detection device is used to detect the temperature data of the first detection area of the battery cell.
3. The battery protection board according to claim 2, characterized in that, The anti-counterfeiting chip also includes a temperature acquisition module. The control module is electrically connected to the temperature acquisition module. The temperature acquisition module is electrically connected to the first temperature detection device through the first pin of the anti-counterfeiting chip. The temperature acquisition module is used to process the temperature data detected by the first temperature detection device.
4. The battery protection board according to claim 3, characterized in that, It also includes a second temperature detection device, which is disposed in the first area. The temperature acquisition module is electrically connected to the second temperature detection device through the second pin of the anti-counterfeiting chip. The second temperature detection device is used to detect the temperature data of the second detection area of the battery cell. The temperature acquisition module is also used to process the temperature data detected by the second temperature detection device. The second detection area of the battery cell is an area on the battery cell that is different from the first detection area of the battery cell.
5. The battery protection board according to claim 1, characterized in that, The anti-counterfeiting chip also includes a cell voltage sampling module. The control module is electrically connected to the cell voltage sampling module. The first sampling terminal of the cell voltage sampling module is electrically connected to the first tab of the cell through the third pin of the anti-counterfeiting chip. The second sampling terminal of the cell voltage sampling module is electrically connected to the second tab of the cell through the fourth pin of the anti-counterfeiting chip. The first tab is the positive tab, and the second tab is the negative tab.
6. The battery protection board according to claim 5, characterized in that, In the case where the battery cell also includes a third tab, the third sampling terminal of the battery cell voltage sampling module is electrically connected to the third tab through the fifth pin of the anti-counterfeiting chip, wherein the third tab is a positive tab or a negative tab.
7. The battery protection board according to claim 5, characterized in that, The third pin has a withstand voltage greater than 12V.
8. The battery protection board according to claim 5, characterized in that, The first end of the switching module is electrically connected to the power supply terminal of the first protection device through the sixth pin of the anti-counterfeiting chip. The power supply terminal of the first protection device is electrically connected to the first tab through the first resistor. The second end of the switching module is electrically connected to the fourth pin, and the fourth pin is electrically connected to the second tab through the second resistor.
9. The battery protection board according to claim 1, characterized in that, It also includes a second protection device, which is disposed in the first area and is electrically connected to the first protection device and the battery cell respectively.
10. A battery, characterized in that, It includes a battery cell and a battery protection board as described in any one of claims 1 to 9, wherein the battery cell is electrically connected to the battery protection board.