Battery and electronic device

Abstract

The utility model provides a battery and electronic equipment. The battery comprises a battery protection plate and a battery cell, a connection area is arranged on the preset side surface of the battery cell; the battery protection board comprises a first daughter board, and a connecting end is arranged on the first side face of the first daughter board. The connecting end is fixed to the connecting area; the first side surface of the first daughter board is parallel to the preset side surface of the battery cell. According to the embodiment, by reducing the occupied space of the battery protection plate, the size of the battery cell can be increased, namely the capacity of the battery cell can be increased.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of batteries, and in particular to a battery and an electronic device. BACKGROUND

[0002] The battery power of an electronic device is composed of a cell and a protection plate. The tab of the cell and the welding point of the protection plate are welded together to provide protection for the cell.

[0003] The existing protection plate is provided with a power loop, a protection unit and a power detection unit. Taking the protection unit as an example, the protection unit of the existing protection plate is provided with two sections of protection circuit. The protection voltage threshold or the current threshold of each section of protection circuit is different to meet the protection requirements of the battery in different use scenarios.

[0004] In actual application, when there is a demand to increase the capacity of the battery, the size of the cell is increased, which reduces the size of the protection plate, resulting in an impact on the heat dissipation of the protection plate. CONTENT OF THE UTILITY MODEL

[0005] The present disclosure provides a battery and an electronic device to solve the above technical problems.

[0006] According to a first aspect of the present disclosure, a battery is provided, which comprises a battery protection plate and a cell. A preset side of the cell is provided with a connection area. The battery protection plate comprises a first sub-plate, a first side of the first sub-plate is provided with a connection end. The connection end is fixed to the connection area. The first side of the first sub-plate is arranged in parallel with the preset side of the cell.

[0007] Optionally, the first side of the first sub-plate is further provided with a preset device of a first protection circuit, and the preset device is located within a space formed by the first side, the preset side and the connection end.

[0008] Optionally, the preset device comprises at least one of a temperature sampling resistor, a current sampling resistor and a protection switch device.

[0009] Optionally, the packaging size of the preset device is less than or equal to a preset size.

[0010] Optionally, the first sub-plate comprises an FPC plate and a first support plate. The FPC plate is provided with a connection line and a preset device. The first support plate is used to support the FPC plate attached thereto.

[0011] Optionally, the battery protection plate further comprises a second sub-plate. The second sub-plate is arranged on one side of the first sub-plate and extends away from the cell, and the plane in which the second sub-plate is arranged is different from the plane in which the first sub-plate is arranged.

[0012] Optionally, when the number of the second sub-boards is one, the second sub-board is provided with a third connecting end and a fourth connecting end; the third connecting end is used for electrically connecting the first protection circuit of the battery protection board and the main board respectively; and the fourth connecting end is used for electrically connecting the first protection circuit of the battery protection board and the main board respectively.

[0013] Optionally, when the number of the second sub-boards is two, the two second sub-boards are arranged on the two sides of the first sub-board in the length direction respectively; a first second sub-board is provided with a third connecting end, which is used for electrically connecting the first protection circuit of the battery protection board and the main board respectively; and a second second sub-board is provided with a fourth connecting end, which is used for electrically connecting the first protection circuit of the battery protection board and the main board respectively.

[0014] Optionally, a U-shaped bending part is arranged between the second sub-board and the first sub-board; the first sub-board comprises a first adhering part; a first side edge of the U-shaped bending part adheres to the first adhering part of the first sub-board, and the first side edge of the U-shaped bending part coincides with or is parallel to the plane where the first sub-board is located.

[0015] Optionally, a U-shaped bending part is arranged between the second sub-board and the first sub-board; the second sub-board comprises a second adhering part, the second adhering part of the second sub-board adheres to a second side edge of the U-shaped bending part, and the included angle between the second sub-board and the second side edge is within a preset range.

[0016] Optionally, the second sub-board is provided with other devices in the first protection circuit except for a preset device.

[0017] Optionally, the battery further comprises a communication interface arranged on the battery protection board; the communication interface is electrically connected with the first protection circuit and the external main board respectively.

[0018] According to a second aspect of the present disclosure, an electronic device is provided, comprising a main board and a battery as described in any one of the first aspect; the main board comprises a second protection circuit, the second protection circuit is electrically connected with the battery; the second protection circuit and the first protection circuit of the battery serve as two-stage protection circuits of the battery.

[0019] Optionally, the main board further comprises a power management module and a communication interface; the power management module is electrically connected with the first protection circuit and the second protection circuit respectively, and the communication interface of the main board is electrically connected with the communication interface of the battery;

[0020] The power management module is configured to acquire the cell parameter of the battery through the communication interface, and control the first protection circuit and / or the second protection circuit to switch to a disconnected state according to the cell parameter and a preset protection threshold, so as to protect the battery.

[0021] Optionally, the main board further comprises a first charge pump and a second charge pump; the first charge pump and the second charge pump are electrically connected with the first protection circuit of the battery protection board respectively.

[0022] Optionally, the main board further comprises a current limiting circuit; the current limiting circuit is electrically connected with the first protection circuit of the battery and the first charge pump of the main board respectively; the current limiting circuit is configured to balance the charging current of the battery protection board and the main board.

[0023] Optionally, the electronic device further comprises a middle frame and a back shell; the battery is fixed to the middle frame by means of double-sided adhesive tape; or, the battery is fixed to the middle frame by means of bolts; or, the battery is fixed by means of the back shell.

[0024] The technical scheme provided by the embodiment of the present disclosure can include the following beneficial effects:

[0025] The battery provided by the embodiment comprises a battery protection board and a cell; a connection area is arranged on a preset side of the cell; the battery protection board comprises a first sub-board, a connection end is arranged on a first side of the first sub-board; the connection end is fixed to the connection area; and the first side of the first sub-board is arranged in parallel with the preset side of the cell. In this way, the connection end of the first sub-board can be fixed to the connection area on the preset side of the cell, and the first side of the first sub-board and the preset side of the cell are arranged in parallel, which not only reduces the occupied space of the battery protection board, but also forms a space for accommodating devices in the thickness direction of the connection end, further reducing the occupied space of the battery protection board, in other words, by reducing the occupied space of the battery protection board, the size of the cell can be increased, i.e. the capacity of the cell can be increased.

[0026] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A block diagram of a battery according to an embodiment of the present disclosure.

[0028] Figure 2 A schematic view of a preset side of a cell according to an embodiment of the present disclosure.

[0029] Figure 3 A schematic view of a battery protection board according to an embodiment of the present disclosure.

[0030] Figure 4 A schematic diagram of a battery protection plate according to an embodiment of the present disclosure.

[0031] Figure 5 A schematic diagram of a battery protection plate according to an embodiment of the present disclosure.

[0032] Figure 6 A schematic diagram of a battery protection plate according to an embodiment of the present disclosure.

[0033] Figure 7 A schematic diagram of a battery protection plate according to an embodiment of the present disclosure.

[0034] Figure 8 A block diagram of an electronic device according to an embodiment of the present disclosure.

[0035] Figure 9 A block diagram of an electronic device according to an embodiment of the present disclosure.

[0036] Figure 10 A block diagram of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail herein below with reference to the accompanying drawings. In the following description, the same drawings refer to the same or similar elements. The following exemplary embodiments described in the exemplary embodiments do not represent all the embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of the present disclosure as detailed in the appended claims.

[0038] To solve the above technical problems, the embodiments of the present disclosure provide a battery and an electronic device, which can be applied to electronic devices provided with a battery, such as a smart phone, a tablet computer, a smart watch, a smart bracelet, etc.

[0039] The inventive concept of the embodiment of the present disclosure is that: first, the number of first protection circuits of the battery protection plate is reduced from two protection circuits to one protection circuit, and the first protection circuit is arranged on the battery protection plate and the second protection circuit is arranged on the mainboard. In this way, the first protection circuit and the second protection circuit are used as two protection circuits of the battery, but the size of the battery protection plate can be reduced because the battery protection plate only has the first protection circuit. Second, the relative position of the battery protection plate and the battery cell is adjusted. When the connecting end of the battery protection plate is attached to the tab of the battery cell, the battery protection plate extends along the battery cell, and the preset side of the battery protection plate is parallel to the battery cell, so that the space occupied by the battery protection plate is adjusted from the width size to the thickness size, and the occupied space of the battery protection plate is reduced. The size of the battery protection plate is reduced by the above-mentioned method, which is beneficial to increase the size of the battery cell and improve the capacity of the battery cell.

[0040] It should be noted that the first protection circuit and the second protection circuit of the battery can be used in the case of having a protection function (such as overvoltage protection, undervoltage protection, overcurrent protection or underrun protection), and the corresponding scheme falls within the protection scope of the present disclosure under the condition of guaranteeing the safety requirements.

[0041] Referring to Figure 1 , the present disclosure provides a battery 10, comprising: a battery protection plate 11 and a battery cell Cell. The preset side of the battery cell Cell is provided with a connecting area; the battery protection plate 11 comprises a first sub-plate 111, and the first side of the first sub-plate 111 is provided with a connecting end; the connecting end is fixed to the connecting area; and the first side of the first sub-plate is parallel to the preset side of the battery cell Cell.

[0042] It should be noted that, continuing to refer to Figure 1 , in the coordinate system xyz, the length of the battery cell Cell in the x-axis direction is regarded as the width, the length in the y-axis direction is regarded as the length, and the length in the z-axis direction is regarded as the thickness; the length of the first sub-plate 111 in the x-axis direction is regarded as the length, the length in the z-axis direction is regarded as the width, and the length in the y-axis direction is regarded as the thickness.

[0043] In an embodiment, looking from the positive direction of the y-axis to the negative direction of the y-axis, that is, the length direction of the battery cell Cell, referring to Figure 2 , the battery cell Cell is provided with a connecting area B+ and a connecting area B-, which are used as the positive electrode and the negative electrode of the battery cell Cell respectively. It can be understood that the connecting area B+ and the connecting area B- are respectively provided with conductive materials, such as copper, nickel, gold or silver, or a mixture, which are used as tabs.

[0044] In an embodiment, looking from the negative direction of the y-axis to the positive direction of the y-axis, that is, the thickness direction of the first sub-plate 111, referring to Figure 3The first side of the first sub-board 111 includes a first connection end A+ and a second connection end A- as used for connecting with the positive electrode and the negative electrode of the battery cell Cell.

[0045] In combination Figures 1-3 It can be known that when the first connection end A+ and the second connection end A- are fixed into the connection area B+ and the connection area B- respectively, the first side of the first sub-board 111 is parallel to the preset side of the battery cell Cell when the battery 10 is viewed from above. Further, in the length direction (y-axis direction) of the battery cell Cell, the space occupied by the first sub-board 111 is less than (or equal to) the sum of the thickness of the first sub-board 111 and the thickness of the connection end. Compared with the space occupied by the first sub-board 111 in the related art, which is the sum of the width of the first sub-board 111 and the length of the electrode tab of the battery cell Cell, the space occupied by the first sub-board 111 in the length direction of the battery cell Cell can be reduced, which is conducive to increasing the length of the battery cell Cell and further increasing the capacity of the battery cell Cell.

[0046] Continuing to refer to Figure 1 and Figure 3 The first side of the first sub-board 111 is further provided with preset devices of the first protection circuit, such as at least one of a temperature sampling resistor NTC, a current sampling resistor (or a precision resistor), and a protection switch device. The temperature sampling resistor NTC can collect the temperature of the battery cell or the battery. The current sampling resistor Rs can sample the charge and discharge current of the battery cell Cell. The protection switch device MOS can control the conduction or disconnection of the charge and discharge circuit.

[0047] It should be noted that in some possible examples, the packaging size of the preset device is less than or equal to the preset size, for example, the preset size is 1.5 mm*1.5 mm*0.1 mm in length* width* thickness, and the size of the preset size can be selected according to the specific scene, and the corresponding scheme falls within the protection scope of the present disclosure.

[0048] In the embodiment, the above-mentioned preset device is arranged on the first side of the first sub-board 111, and when the first side forms a space opposite to the preset side of the battery cell Cell, the preset device can be located in the space. It can be understood that the preset device actually occupies the space formed by the thickness of the connection end of the first sub-board 111, that is, the existence of the preset device does not increase the space occupied by the first sub-board 111, but the space can be saved on the second side (i.e., the back of the first side) of the first sub-board 111. In addition, in the embodiment, by reducing the packaging size of the preset device, the space occupied by the preset device can be reduced, which is conducive to reducing the thickness of the connection end of the first sub-board 111.

[0049] In an embodiment, the first sub-board 111 can be implemented by a PCB board, and the mechanical hardness of the PCB board can meet the use requirements of the battery 10. In another embodiment, referring toFigure 4 The first sub-board 111 can include an FPC board 1111 and a first support board 1112. The FPC board 1111 is provided with connecting lines and preset devices. The first support board 1112 is used to support the FPC board 1111 attached thereto. It can be understood that the first support board 1112 can ensure that the FPC board 1111 can be bent to a certain extent and has sufficient mechanical stress, thereby meeting the needs of subsequent assembly.

[0050] In an embodiment, continuing to refer to Figure 1 The battery protection board 10 further includes a second sub-board 112. The second sub-board 112 is arranged on one side of the first sub-board 111 and extends away from the direction of the battery cell Cell, and the plane where the second sub-board 112 is located is different from the plane where the first sub-board 111 is located. In combination with the xyz coordinate system shown in Figure 1 The plane where the first sub-board 111 (length and width) is located is parallel or approximately parallel to the xoz plane, and the plane where the second sub-board 112 (length and width) is located is parallel or approximately parallel to the xoy plane. Therefore, the plane where the first sub-board 111 is located is different from the plane where the second sub-board 112 is located. It should be noted that, taking the example that the plane where the first sub-board 111 (length and width) is located is parallel or approximately parallel to the xoz plane, parallel means that the included angle between the two planes is 0, and approximately parallel means that the included angle between the two planes is within [-10, +10] degrees, and the arrangement of the second sub-board 112 is the same. The parallel or approximately parallel arrangement of the first sub-board 111 and the second sub-board 112 can ensure that only a small amount of space is occupied, and can also meet the needs of actual assembly.

[0051] In an embodiment, the number of second sub-boards 112 can be one. Referring to Figure 5 The second sub-board 111 is provided with a third connecting end P1 and a fourth connecting end P2. The first connecting end P1 is used for electrical connection with the first protection circuit and the main board of the battery protection board 11, respectively. The second connecting end P2 is used for electrical connection with the first protection circuit and the main board of the battery protection board 11, respectively. The battery protection board 11 of the embodiment can be suitable for scenarios where the charging and discharging current of the battery cell is small and the heat dissipation amount is small.

[0052] In an embodiment, the number of second sub-boards 112 can be two. Referring to Figure 6 When the number of second sub-boards 112 is two, the two second sub-boards are respectively arranged on both sides of the first sub-board 111 in the length direction (i.e., the x-axis direction); the first second sub-board 1121 is arranged on the left side of the first sub-board 111 in the length direction, and the second second sub-board 1122 is arranged on the right side of the first sub-board 111 in the length direction. Figure 6The third connection end P1 is arranged on the second sub-board, and the third connection end P1 is electrically connected with the first protection circuit and the main board of the battery protection board 11 respectively. The fourth connection end P2 is arranged on the second sub-board, and the fourth connection end P2 is electrically connected with the first protection circuit and the main board of the battery protection board 11 respectively. In this way, in the embodiment, the devices of the first protection circuit are arranged on two second sub-boards, so that the size of each second sub-board 112 can be reduced, and the heat dissipation efficiency is improved after the devices are dispersed, which is suitable for the scene with large charging and discharging current of the battery cell.

[0053] It should be noted that in the embodiment, the devices of the battery protection board 11 can be divided into preset devices arranged on the first sub-board 111, and other devices except the preset devices arranged on the second sub-board 112, so as to disperse the devices. For example, the power meter, the protection switch device, the resistor or the capacitor of the first protection circuit are arranged on the second sub-board 112. In some possible examples, when the protection switch device is arranged on the second sub-board 112, the protection switch device can be processed as a SIP module, and then the SIP module is attached to the substrate or the FPC. In addition, the devices on the second sub-board 112 can be injection molded, so as to improve the mechanical strength of the second sub-board 112.

[0054] In an embodiment, referring to Figure 7 The battery protection board 11 further includes a U-shaped bending part 113 arranged between the second sub-board and the first sub-board. The first sub-board 111 includes a first attachment part, and the first side of the U-shaped bending part 113 is attached to the first attachment part of the first sub-board 111, and the first side of the U-shaped bending part 113 coincides with or is parallel to the plane where the first sub-board 111 is located. In some examples, the included angle between the first sub-board 111 and the second sub-board 112 is within a preset range. The preset range can be

-10, +10

[0055] In an embodiment, the battery 10 further includes a communication interface arranged on the battery protection board; the communication interface is electrically connected with the first protection circuit and the external main board respectively. For example, the communication interface can be an I 2 C bus, and the like, and in the case of being capable of realizing data transmission, the corresponding scheme falls within the protection scope of the present disclosure.

[0056] On the basis of the battery provided in the embodiments of the present disclosure, the embodiments of the present disclosure further provide an electronic device, referring to Figure 8 , comprising the mainboard 20 and the battery 10 described above; the mainboard 20 comprises a second protection circuit 21, and the second protection circuit 21 is electrically connected with the battery 10; the second protection circuit 21 and the first protection circuit of the battery 10 serve as two protection circuits of the battery 10, thereby meeting the regulatory requirements.

[0057] In an embodiment, referring to Figure 9 , the mainboard 20 further comprises a power management module 22 and a communication interface 23; the power management module 22 is electrically connected with the first protection circuit 13 and the second protection circuit 21 respectively, and the communication interface 23 of the mainboard 20 is electrically connected with the communication interface of the battery 10; the power management module 22 is used to acquire the cell parameter of the battery 10 through the communication interface 23, and control the first protection circuit 13 and / or the second protection circuit 21 to switch to the open state according to the cell parameter 10 and the preset protection threshold, so as to protect the battery 10.

[0058] In an embodiment, continuing to refer to Figure 9 , the mainboard 20 further comprises a first charge pump 24 and a second charge pump 25; the first charge pump 24 and the second charge pump 25 are electrically connected with the first protection circuit 13 of the battery protection board 11 respectively.

[0059] In an embodiment, continuing to refer to Figure 9 , the mainboard 20 further comprises a current limiting circuit 26; the current limiting circuit 26 is electrically connected with the first protection circuit 13 of the battery 10 and the first charge pump 24 of the mainboard 20 respectively; the current limiting circuit 26 is used to balance the charging current of the battery protection board 11 and the mainboard 20. In this way, in the embodiment, by balancing the charging current between the battery 10 and the mainboard 20, the problem that the devices (such as the power meter / protective switch device, etc.) of the second sub-board 112 are seriously heated due to large internal resistance is alleviated, and the effect of protecting the second sub-board 112 is achieved.

[0060] In an embodiment, continuing to refer to Figure 9 , the electronic device further comprises a middle frame and a rear shell; the battery 10 is fixed to the middle frame in a double-sided adhesive tape manner; or the battery is fixed to the middle frame in a bolt manner; or the battery is fixed in a rear shell top pressing manner.

[0061] On the basis that the electronic device has the battery described above, referring to Figure 10 , the electronic device 1000 can comprise one or more of the following components: a processing component 1002, a memory 1004, a power supply component 1006, a multimedia component 1008, an audio component 1010, an input / output (I / O) interface 1012, a sensor component 1014, a communication component 1016, and an image acquisition component 1018.

[0062] The processing component 1002 generally controls the overall operations of the electronic device 1000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1002 can include one or more processors 1020 to execute computer program. Further, the processing component 1002 can include one or more modules to facilitate the interaction between the processing component 1002 and other components. For example, the processing component 1002 can include a multimedia module to facilitate the interaction between the multimedia component 1008 and the processing component 1002. In an example, the processing component can include a processor configured to perform the antenna control method described above.

[0063] The memory 1004 is configured to store various types of data to support operations of the electronic device 1000. Examples of these data include computer programs configured to operate on the electronic device 1000, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1004 can be implemented by any type of volatile or non-volatile memory devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0064] The multimedia component 1008 includes a screen providing an output interface between the electronic device 1000 and a target object. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive input information from a target object. The touch panel includes one or more touch sensors to sense a touch, a slide and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or a sliding action, but also detect duration and pressure related to the touching or sliding action.

[0065] The audio component 1010 is configured to output and / or input audio file information. For example, the audio component 1010 includes a microphone (MIC) configured to receive external audio file information when the electronic device 1000 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio file information can be further stored in the memory 1004 or transmitted via the communication component 1016. In some embodiments, the audio component 1010 also includes a speaker configured to output audio file information.

[0066] The I / O interface 1012 provides an interface between the processing component 1002 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. In an example, the I / O interface 1012 includes the aforementioned buttons.

[0067] The sensor component 1014 includes one or more sensors configured to provide various state assessments of the electronic device 1000. For example, the sensor component 1014 can detect an open / closed position of the electronic device 1000, relative positioning of components, such as a display screen and a keypad of the electronic device 1000, a change in position of the electronic device 1000 or a component, presence or absence of a target object in contact with the electronic device 1000, orientation or acceleration / deceleration of the electronic device 1000, and a change in temperature of the electronic device 1000.

[0068] The communication component 1016 is configured to facilitate wired or wireless communication between the electronic device 1000 and other devices. The electronic device 1000 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof, for example. In an example embodiment, the communication component 1016 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 1016 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technology.

[0069] In an example embodiment, the electronic device 1000 can be implemented using one or more application-specific integrated circuits (ASICs), digital information processors (DSPs), digital information processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements.

[0070] Other embodiments of the disclosure will be apparent to those of ordinary skill in the art having the benefit of the present disclosure upon consideration of the specification and practice of the disclosure disclosed. The disclosure is intended to cover any variations, uses or adaptations of the disclosure using its general principles or its specific details. The specification and examples are to be regarded as illustrative only and not restrictive on the true scope and spirit of the disclosure, which is to be determined by the following claims.

[0071] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings and that various modifications and changes can be made therein without departing from the scope thereof. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A battery, characterized by, The battery comprises a battery protection plate and a battery cell; a preset side of the battery cell is provided with a connecting area; the battery protection plate comprises a first sub-plate, a first side of the first sub-plate is provided with a connecting end; the connecting end is fixed to the connecting area; the first side of the first sub-plate is arranged in parallel with the preset side of the battery cell.

2. The battery of claim 1, wherein, The first side of the first sub-plate is further provided with preset devices of a first protection circuit, and the preset devices are located in a space formed by the first side, the preset side and the connecting end.

3. The battery of claim 2, wherein, The preset devices comprise at least one of a temperature sampling resistor, a current sampling resistor and a protection switch device.

4. The battery of claim 3, wherein, The packaging size of the preset devices is less than or equal to a preset size.

5. The battery of claim 3, wherein, The first sub-plate comprises an FPC plate and a first support plate; the FPC plate is provided with connecting lines and preset devices; the first support plate is used for supporting the FPC plate attached thereto.

6. The battery according to any one of claims 1 to 5, characterized in that, The battery protection plate further comprises a second sub-plate; the second sub-plate is arranged on one side of the first sub-plate and extends away from the battery cell, and a plane where the second sub-plate is located is different from a plane where the first sub-plate is located.

7. The battery of claim 6, wherein, When the number of the second sub-plates is one, the second sub-plate is provided with a third connecting end and a fourth connecting end; the third connecting end is used for electrically connecting the first protection circuit and a main plate of the battery protection plate respectively; the fourth connecting end is used for electrically connecting the first protection circuit and the main plate of the battery protection plate respectively.

8. The battery of claim 6, wherein, When the number of the second sub-plates is two, the two second sub-plates are arranged on two sides of the first sub-plate in a length direction respectively; a first second sub-plate is provided with a third connecting end, and the third connecting end is used for electrically connecting the first protection circuit and the main plate of the battery protection plate respectively; a second second sub-plate is provided with a fourth connecting end, and the fourth connecting end is used for electrically connecting the first protection circuit and the main plate of the battery protection plate respectively.

9. The battery according to claim 7 or 8, characterized in that, A U-shaped bending part is arranged between the second sub-plate and the first sub-plate; the first sub-plate comprises a first attaching part; a first side edge of the U-shaped bending part is attached to the first attaching part of the first sub-plate, and the first side edge of the U-shaped bending part coincides with or is parallel to a plane where the first sub-plate is located.

10. The battery according to claim 7 or 8, characterized in that, A U-shaped bending part is arranged between the second sub-plate and the first sub-plate; the second sub-plate comprises a second attaching part, the second attaching part of the second sub-plate is attached to a second side edge of the U-shaped bending part, and an included angle between the second sub-plate and the second side edge is within a preset range.

11. The battery of claim 6, wherein, The second sub-plate is provided with devices other than the preset devices in the first protection circuit.

12. The battery of claim 1, wherein, The battery further comprises a communication interface arranged on the battery protection plate; the communication interface is electrically connected with the first protection circuit and an external main plate respectively.

13. An electronic device, comprising: The battery comprises a main plate and the battery as claimed in any one of claims 1 to 12; the main plate comprises a second protection circuit, the second protection circuit is electrically connected with the battery; the second protection circuit and the first protection circuit of the battery serve as two protection circuits of the battery.

14. The electronic device of claim 13, wherein, The mainboard further comprises a power management module and a communication interface; the power management module is electrically connected with the first protection circuit and the second protection circuit respectively, and the communication interface of the mainboard is electrically connected with the communication interface of the battery; The power management module is used for acquiring the cell parameter of the battery through the communication interface, and controlling the first protection circuit and / or the second protection circuit to switch to the off state according to the cell parameter and a preset protection threshold, so as to protect the battery.

15. The electronic device of claim 14, wherein, The mainboard further comprises a first charge pump and a second charge pump; the first charge pump and the second charge pump are electrically connected with the first protection circuit of the battery protection board respectively.

16. The electronic device of claim 15, wherein, The mainboard further comprises a current limiting circuit; the current limiting circuit is electrically connected with the first protection circuit of the battery and the first charge pump of the mainboard respectively; the current limiting circuit is used for balancing the charging current of the battery protection board and the mainboard.

17. The electronic device of claim 13, wherein, The electronic device further comprises a middle frame and a back shell; the battery is fixed to the middle frame by means of double-sided adhesive tape; or the battery is fixed to the middle frame by means of bolts; or the battery is fixed by means of the back shell pressing from the top.

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