Battery and electronic device

Abstract

The present disclosure provides a battery and an electronic device, and belongs to the technical field of electronics. The battery comprises a battery cell, a flexible circuit board, a first circuit packaging module and a second circuit packaging module; the flexible circuit board is located at one end of the battery cell and is electrically connected with the battery cell; the first circuit packaging module and the second circuit packaging module are both electrically connected with the flexible circuit board, the first circuit packaging module is used for packaging a first battery protection circuit, and the second circuit packaging module is used for packaging a second battery protection circuit. By using the present disclosure, the volume of the battery cell can be effectively increased, so as to improve the capacity of the battery.

Description

Technical Field

[0001] This disclosure relates to the field of electronic technology, and more specifically to a battery and an electronic device. Background Technology

[0002] Batteries are one of the most important components in electronic devices, used to power various devices within them.

[0003] A battery typically consists of a cell and a protection circuit board. The protection circuit board is fixed to the end of the cell and electrically connected to the tabs on the cell. The protection circuit board also contains multiple protection devices required by the battery protection circuit to protect the cell from overcharging and over-discharging.

[0004] Electronic devices typically have battery mounting slots for fixing batteries in place. However, the size of these slots also limits the size of the batteries. Furthermore, the protection circuit board and the multiple protection devices mounted on it require a significant amount of space within the battery mounting slot, thus reducing the available space for the battery cells and consequently decreasing the battery capacity. Utility Model Content

[0005] This disclosure provides a battery and an electronic device that can solve the technical problems existing in the related art. The technical solution is as follows:

[0006] On one hand, this disclosure provides a battery, which includes a battery cell, a flexible circuit board, a first circuit packaging module, and a second circuit packaging module;

[0007] The flexible circuit board is located at one end of the battery cell and is electrically connected to the battery cell;

[0008] Both the first circuit packaging module and the second circuit packaging module are electrically connected to the flexible circuit board. The first circuit packaging module is used to package a section of battery protection circuit, and the second circuit packaging module is used to package two sections of battery protection circuit.

[0009] In the technical solution provided in this disclosure, on the one hand, a first-stage battery protection circuit and a second-stage battery protection circuit are respectively encapsulated in a first circuit encapsulation module and a second circuit encapsulation module. These two encapsulation modules replace multiple scattered protection devices in related technologies, thereby reducing the volume of battery protection-related components. On the other hand, since there is no longer a need to provide strong support for multiple scattered protection devices, a flexible circuit board is used to replace the protection circuit board in related technologies, further reducing the volume of battery protection-related components. Through these two structural aspects, the volume of battery protection-related components is reduced, thereby reducing the space occupied by battery protection-related components in the battery mounting slot of the electronic device. While maintaining the overall battery size, the volume of the battery cell can be effectively increased, thereby improving the battery capacity.

[0010] In some possible implementations, the flexible circuit board includes a central portion, a first connecting portion, and a second connecting portion, wherein the central portion is electrically connected to the battery cell, and the first connecting portion and the second connecting portion are respectively connected to both ends of the central portion;

[0011] The first circuit package module is located on one side of the first connection portion and is electrically connected to the first connection portion;

[0012] The second circuit package module is located on one side of the second connection portion and is electrically connected to the second connection portion.

[0013] In the technical solution provided in this disclosure, the first circuit packaging module and the second circuit packaging module are respectively disposed on the first connection part and the second connection part, ensuring that there is enough space in the center to accommodate the current-carrying copper foil, thereby ensuring that the battery cell can perform high-power charging and discharging, thus improving the battery performance. In addition, the center also has enough space to be electrically connected to multiple tabs, reducing the battery's internal resistance, increasing the battery's charging and discharging speed, and further improving the battery's performance.

[0014] In some possible implementations, the battery cell has a plurality of positive tabs and a plurality of negative tabs, all of which are electrically connected to the central portion.

[0015] In the technical solution provided in this disclosure, multiple positive tabs and multiple negative tabs are used to reduce the internal resistance of the battery, increase the charging and discharging speed of the battery, and further improve the performance of the battery.

[0016] In some possible implementations, the battery further includes a positive nickel plate and a negative nickel plate;

[0017] The positive nickel plate is located on the side of the central part closer to the positive electrode tab, and is electrically connected to the central part and the plurality of positive electrode tabs;

[0018] The negative electrode nickel sheet is located on the side of the central part closer to the negative electrode tab, and is electrically connected to the central part and the plurality of negative electrode tabs.

[0019] In the technical solution provided in this disclosure, the electrical connection between the central part and the positive and negative electrodes is achieved through positive and negative nickel plates, and the connection structure is stable.

[0020] In some possible implementations, the plurality of positive tabs and the plurality of negative tabs are all welded to the central portion.

[0021] In the technical solution provided in this disclosure, since it is not necessary to provide strong support for multiple scattered protection devices as in related technologies, the electrical connection is achieved directly by welding the positive and negative tabs to the center, replacing the method of achieving electrical connection through nickel sheets. This reduces the volume of battery protection-related components and, relatively speaking, increases the volume of the battery cell, thereby increasing the battery capacity.

[0022] In some possible implementations, the first circuit package module or the second circuit package module is also used to package a power detection circuit.

[0023] In the technical solution provided in this disclosure, the battery may further include a power detection circuit to detect the power level of the battery cell and perform operations such as battery charging and discharging control based on the power level, thereby improving the safety during battery use. Furthermore, by encapsulating the power detection circuit within a first or second circuit packaging module, its space occupation is minimized, achieving improved battery performance while ensuring high battery capacity requirements are met.

[0024] In some possible implementations, the first circuit package module includes a first control chip, at least one first semiconductor switching device, and at least one first passive device, wherein the first control chip, the first semiconductor switching device, and the first passive device are electrically connected and are all electrically connected to the flexible circuit board.

[0025] The second circuit package module includes a second control chip, at least one second semiconductor switch device, and at least one second passive device. The second control chip, the second semiconductor switch device, and the second passive device are electrically connected and are all electrically connected to the flexible circuit board.

[0026] In the technical solution provided in this disclosure, the first circuit packaging module realizes the first stage of battery protection through the first control chip, the first semiconductor switching device and the first passive device, and the second circuit packaging module realizes the second stage of battery protection through the second control chip, the second semiconductor switching device and the second passive device, thereby satisfying the two-stage protection mechanism of the battery and improving the safety of the battery.

[0027] In some possible implementations, the flexible circuit board has a positive charging / discharging line and a negative charging / discharging line, the positive charging / discharging line being electrically connected to the positive tab of the battery cell, and the negative charging / discharging line being electrically connected to the negative tab of the battery cell.

[0028] The first semiconductor switching device is electrically connected to the positive electrode charging / discharging line to turn the positive electrode charging / discharging line on or off; the second semiconductor switching device is electrically connected to the negative electrode charging / discharging line to turn the negative electrode charging / discharging line on or off; or,

[0029] The first semiconductor switching device is electrically connected to the negative electrode charging and discharging line and is used to turn the negative electrode charging and discharging line on or off. The second semiconductor switching device is electrically connected to the positive electrode charging and discharging line and is used to turn the positive electrode charging and discharging line on or off.

[0030] In the technical solution provided in this disclosure, the positive electrode charging and discharging line and the negative electrode charging and discharging line can be turned on or off by using a first semiconductor switching device and a second semiconductor switching device, thereby achieving charging and discharging protection for the battery.

[0031] On the other hand, this disclosure also provides an electronic device comprising a battery as described in any of the preceding claims.

[0032] In the technical solution provided in this disclosure, on the one hand, a first-stage battery protection circuit and a second-stage battery protection circuit are respectively encapsulated in a first circuit encapsulation module and a second circuit encapsulation module in the battery. These two encapsulation modules replace multiple scattered protection devices in related technologies, thereby reducing the volume of battery protection-related components. On the other hand, since there is no longer a need to provide strong support for multiple scattered protection devices, a flexible circuit board is used to replace the protection circuit board in related technologies, further reducing the volume of battery protection-related components. Through these two structural aspects, the volume of battery protection-related components is reduced, thereby reducing the space occupied by battery protection-related components in the battery mounting slot of the electronic device. While maintaining the overall battery size, the volume of the battery cell can be effectively increased, thereby increasing the battery capacity and improving the performance of the electronic device.

[0033] In some possible implementations, the electronic device further includes a motherboard, a first connector, and a second connector;

[0034] The first connector is located on the side of the flexible circuit board away from the first circuit packaging module and is electrically connected to the flexible circuit board and the motherboard. The orthographic projection of the first connector on the flexible circuit board at least partially overlaps with the orthographic projection of the first circuit packaging module on the flexible circuit board.

[0035] The second connector is located on the side of the flexible circuit board away from the second circuit packaging module and is electrically connected to the flexible circuit board and the motherboard. The orthographic projection of the second connector on the flexible circuit board at least partially overlaps with the orthographic projection of the second circuit packaging module on the flexible circuit board.

[0036] In the technical solution provided in this disclosure, while the battery is electrically connected to the motherboard through the first connector, the first circuit packaging module can also support the first connector, thereby improving the connection stability between the first connector and the flexible circuit board and the motherboard.

[0037] Similarly, while the battery is electrically connected to the motherboard via the second connector, the second circuit packaging module can also support the second connector, thereby improving the connection stability between the second connector and the flexible circuit board and the motherboard.

[0038] In some possible implementations, when the flexible circuit board has a positive charging / discharging line and a negative charging / discharging line, the first connector is electrically connected to both the positive charging / discharging line and the negative charging / discharging line, and the second connector is electrically connected to both the positive charging / discharging line and the negative charging / discharging line.

[0039] In the technical solution provided in this disclosure, both the first connector and the second connector can be connected to the positive and negative terminals of the battery cell to achieve high-power charging and discharging, thereby improving the performance of the battery.

[0040] In some possible implementations, when the flexible circuit board has a positive charging / discharging line and a negative charging / discharging line, the first connector is electrically connected to the positive charging / discharging line, and the second connector is electrically connected to the negative charging / discharging line; or,

[0041] The first connector is electrically connected to the negative electrode charging and discharging circuit, and the second connector is electrically connected to the positive electrode charging and discharging circuit.

[0042] In the technical solution provided in this disclosure, the battery achieves electrical connection between its positive and negative terminals and the motherboard through a first connector and a second connector, thereby realizing the charging and discharging control of the battery. Furthermore, since the first and second connectors are only electrically connected to one of the positive and negative charging / discharging lines respectively, the wiring layout on the flexible circuit board is simplified, facilitating manufacturing. Simultaneously, more space is left on the flexible circuit board for installing overcurrent copper foil or connecting multiple tabs, thus ensuring that the battery cell can perform high-power charging and discharging, reducing the battery's internal resistance, increasing the charging and discharging speed, and further improving battery performance.

[0043] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0044] This disclosure provides a battery in which, on the one hand, a first-stage battery protection circuit and a second-stage battery protection circuit are respectively encapsulated in a first circuit encapsulation module and a second circuit encapsulation module. These two encapsulation modules replace multiple scattered protection devices in related technologies, thereby reducing the size of the battery protection-related components. On the other hand, since there is no longer a need to provide strong support for multiple scattered protection devices, a flexible circuit board is used instead of the protection circuit board in related technologies, further reducing the size of the battery protection-related components. Through these two structural aspects, the size of the battery protection-related components is reduced, thereby reducing the space occupied by the battery protection-related components in the battery mounting slot of the electronic device. While maintaining the overall battery size, the volume of the battery cell can be effectively increased, thereby improving the battery capacity.

[0045] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a battery according to an embodiment of the present disclosure;

[0048] Figure 2 This is a schematic diagram of the structure of a battery according to an embodiment of the present disclosure;

[0049] Figure 3 This is a schematic diagram of the structure of a battery according to an embodiment of the present disclosure;

[0050] Figure 4 This is a schematic diagram of the structure of a battery according to an embodiment of the present disclosure;

[0051] Figure 5 This is a schematic diagram of the circuit topology of a single-stage battery protection circuit, a two-stage battery protection circuit, and a power detection circuit shown in an embodiment of this disclosure;

[0052] Figure 6 This is a schematic diagram of the structure of a battery according to an embodiment of the present disclosure;

[0053] Figure 7 This is a schematic diagram of the structure of an electronic device shown in an embodiment of this disclosure;

[0054] Figure 8 This is a schematic diagram of the structure of a battery as shown in an embodiment of this disclosure.

[0055] Legend

[0056] 1. Battery;

[0057] 11. Battery cell; 111. Positive tab; 112. Negative tab;

[0058] 12. Flexible circuit board; 121. Center part; 122. First connecting part; 123. Second connecting part; 124. Positive electrode charging and discharging circuit; 125. Negative electrode charging and discharging circuit;

[0059] 13. First circuit packaging module; 131. First control chip; 132. First semiconductor switching device; 133. First passive device;

[0060] 14. Second circuit packaging module; 141. Second control chip; 142. Second semiconductor switching device; 143. Second passive device;

[0061] 15. Positive electrode nickel sheet;

[0062] 16. Nickel negative electrode sheet;

[0063] 2. Motherboard;

[0064] 3. First connector;

[0065] 4. Second connector. Detailed Implementation

[0066] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0067] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0068] This disclosure provides a battery, see [link to relevant documentation]. Figure 1 The battery 1 includes a cell 11, a flexible circuit board 12, a first circuit encapsulation module 13, and a second circuit encapsulation module 14. The flexible circuit board 12 is located at one end of the cell 11 and is electrically connected to the cell 11. The first circuit encapsulation module 13 and the second circuit encapsulation module 14 are both electrically connected to the flexible circuit board 12. The first circuit encapsulation module 13 is used to encapsulate a section of battery protection circuit, and the second circuit encapsulation module 14 is used to encapsulate two sections of battery protection circuit.

[0069] In practice, cell 11 is used to realize the charging and discharging functions of the battery.

[0070] The flexible circuit board 12 is typically located at the top of the battery cell 11 and is electrically connected to the battery cell 11. It is used to carry the electrical connections between various components in the battery's protection circuit. It can be of any reasonable shape and can be configured according to requirements. Furthermore, in order to achieve electrical connections between various components, the flexible circuit board 12 can be configured as double-layered or multi-layered.

[0071] The first circuit packaging module 13 is used to encapsulate a section of battery protection circuit, which plays a protective role during battery operation to prevent overcharging or over-discharging of the battery.

[0072] Similarly, the second circuit packaging module 14 is used to package a two-stage battery protection circuit, which adds a layer of circuit protection on the basis of the first-stage battery protection circuit to prevent the battery from overcharging or over-discharging during operation.

[0073] With the above structure, on the one hand, in this battery, a first-stage battery protection circuit and a second-stage battery protection circuit are respectively encapsulated in the first circuit encapsulation module 13 and the second circuit encapsulation module 14. These two encapsulation modules replace multiple scattered protection devices in related technologies, thereby reducing the volume of battery protection-related components.

[0074] On the other hand, since there is no need to provide strong support for multiple scattered protection devices, the use of flexible circuit board 12 to replace the protection circuit board (printed circuit board) in the related technology further reduces the size of battery protection-related components.

[0075] By reducing the size of the battery protection components through the above two structural aspects, the space occupied by the battery protection components in the battery mounting slot of the electronic device is reduced. While keeping the overall battery size unchanged, the volume of the cell 11 can be effectively increased, thereby improving the battery capacity.

[0076] In some possible implementations, the first circuit package module 13 or the second circuit package module 14 is also used to package a power detection circuit.

[0077] In practice, the battery may also include a power detection circuit to detect the power level of the cell 11 and perform operations such as battery charging and discharging control based on the power level, thereby improving the safety of the battery during use. Furthermore, by encapsulating the power detection circuit within the first circuit packaging module 13 or the second circuit packaging module 14, the space occupied by the power detection circuit is minimized, ensuring high battery capacity requirements are met while simultaneously improving battery performance.

[0078] In this embodiment, the power detection circuit and a first-stage battery protection circuit can be packaged together in a first circuit packaging module, or the power detection circuit and a second-stage battery protection circuit can be packaged together in a second circuit packaging module. The specific configuration can be chosen based on the space occupied after packaging and the actual wiring arrangement on the flexible circuit board 12; this embodiment does not impose any limitations on this.

[0079] See also some possible implementations. Figure 1 The flexible circuit board 12 includes a central portion 121, a first connecting portion 122, and a second connecting portion 123.

[0080] See Figure 1The central part 121 may have a flat plate structure for electrical connection with the battery cell 11.

[0081] The first connecting portion 122 and the second connecting portion 123 are respectively connected to both ends of the central portion 121. The first circuit package module 13 is located on one side of the first connecting portion 122 and is electrically connected to the first connecting portion 122. The second circuit package module 14 is located on one side of the second connecting portion 123 and is electrically connected to the second connecting portion 123.

[0082] The first connecting portion 122 may include a bent portion and a flat portion. The bent portion is used to connect the first connecting portion 122 and the center portion 121, and the flat portion of the first connecting portion 122 is used to connect to the first circuit package module 13.

[0083] Similarly, the second connecting portion 123 may include a bent portion and a flat portion, the bent portion being used to connect the second connecting portion 123 and the center portion 121, and the flat portion of the second connecting portion 123 being used to connect to the second circuit package module 14.

[0084] In this way, by respectively setting the first circuit packaging module 13 and the second circuit packaging module 14 on the first connecting portion 122 and the second connecting portion 123, it is ensured that the central portion 121 has sufficient space to accommodate the current-carrying copper foil, thereby ensuring that the battery cell 11 can perform high-power charging and discharging, thus improving battery performance. Furthermore, the central portion 121 also has sufficient space to electrically connect with multiple tabs, reducing the battery's internal resistance, increasing the battery's charging and discharging speed, and further improving battery performance.

[0085] In some possible implementations, cell 11 may have a positive tab 111 and a negative tab 112, see [reference needed] Figure 1 Both the positive electrode 111 and the negative electrode 112 are electrically connected to the center 121 of the flexible circuit board 12, and the electrical connection between the battery cell 11 and the first circuit packaging module 13 and the second circuit packaging module 14 is realized through the center 121.

[0086] Or see Figure 2 The battery cell 11 can have multiple positive tabs 111 and multiple negative tabs 112, all of which are electrically connected to the central portion 121. That is, through the above structure, the central portion 121 has sufficient space to electrically connect with the multiple positive tabs 111 and multiple negative tabs 112, thereby reducing the battery's internal resistance, increasing the battery's charging and discharging speed, and further improving the battery's performance.

[0087] See also some possible implementations. Figure 3The electrical connection structure between the tabs and the flexible circuit board 12 can be as follows: the battery 1 further includes a positive nickel plate 15 and a negative nickel plate 16. The positive nickel plate 15 is located on the side of the central portion 121 near the positive tab 111 and is electrically connected to the central portion 121 and the plurality of positive tabs 111. The negative nickel plate 16 is located on the side of the central portion 121 near the negative tab 112 and is electrically connected to the central portion 121 and the plurality of negative tabs 112.

[0088] In this way, the positive nickel plate 15 and the negative nickel plate 16 achieve electrical connection between the central part 121 and the positive electrode tab 111 and the negative electrode tab 112, and the connection structure is stable.

[0089] Or see Figure 2 Multiple positive tabs 111 and multiple negative tabs 112 are welded to the central part 121.

[0090] In implementation, since it is not necessary to provide strong support for multiple scattered protection devices as in related technologies, electrical connection can be achieved directly by welding the positive tab 111, negative tab 112 and center part 121 (e.g., ultrasonic welding), replacing the method of achieving electrical connection through nickel sheets. This reduces the volume of battery protection-related components and, relatively speaking, increases the volume of the battery cell, thereby increasing the battery capacity.

[0091] See also some possible implementations. Figure 4 The structure of the first circuit packaging module 13 in this embodiment of the present disclosure can be as follows: the first circuit packaging module 13 includes a first control chip 131, at least one first semiconductor switch device 132 and at least one first passive device 133, the first control chip 131, the first semiconductor switch device 132 and the first passive device 133 are electrically connected and are all electrically connected to the flexible circuit board 12.

[0092] In practice, the first control chip 131 can judge the charging and discharging status of the battery through the power circuit composed of the battery cell 11 and the first passive device 133. If overcharging or over-discharging occurs, the first control chip 131 can control the first semiconductor switching device 132 to disconnect, thereby realizing the charging and discharging protection of the battery.

[0093] Similarly, see Figure 4 The second circuit package module 14 may include a second control chip 141, at least one second semiconductor switch device 142 and at least one second passive device 143. The second control chip 141, the second semiconductor switch device 142 and the second passive device 143 are electrically connected and are all electrically connected to the flexible circuit board 12.

[0094] In practice, the second control chip 141 can judge the charging and discharging status of the battery through the power circuit composed of the battery cell 11 and the second passive device 143. If overcharging or over-discharging occurs, the second control chip 141 can control the second semiconductor switching device 142 to disconnect, thereby realizing the charging and discharging protection of the battery.

[0095] In this way, the above structure achieves two-stage battery protection, meets the two-stage protection mechanism of the battery, and improves the safety of the battery.

[0096] It is understandable that if the first circuit packaging module 13 only encapsulates a section of the battery protection circuit, then the first control chip 131 is a control chip for a section of the battery protection circuit. If the first circuit packaging module 13 encapsulates both a section of the battery protection circuit and a power detection circuit, then the first control chip 131 is an integrated control chip for both a section of the battery protection circuit and the power detection circuit.

[0097] Similarly, if the second circuit package module 14 only encapsulates the two-stage battery protection circuit of the battery, then the second control chip 141 is the control chip of the two-stage battery protection circuit. If the second circuit package module 14 encapsulates both the two-stage battery protection circuit and the power detection circuit of the battery, then the second control chip 141 is an integrated control chip of the two-stage battery protection circuit and the power detection circuit.

[0098] In this embodiment, the circuit topology of the first-stage battery protection circuit, the second-stage battery protection circuit, and the power detection circuit can be any reasonable structure, for example, see [link to relevant documentation]. Figure 5 , Figure 5 A possible topology is shown, in which a battery cell 11 (i.e., Cell), a first control chip 131 and a second control chip 141 are shown. The second control chip 141 is an integrated control chip for a two-stage battery protection circuit and a power detection circuit. Multiple first passive devices 133 include precision resistors Rs1, C2, R3, and R4. Multiple first semiconductor switching devices 132 include Q1 and Q2. Multiple second passive devices 143 include C3, R5, R6, R7, R8, R9, and R10. Multiple second semiconductor switching devices 142 include Q3 and Q4.

[0099] In some possible implementations, the flexible circuit board 12 has a positive charging and discharging line 124 and a negative charging and discharging line 125. The positive charging and discharging line 124 is electrically connected to the positive tab 111 of the battery cell 11, and the negative charging and discharging line 125 is electrically connected to the negative tab 112 of the battery cell 11.

[0100] See Figure 6The first semiconductor switching device 132 is electrically connected to the positive electrode charging and discharging line 124 and is used to turn the positive electrode charging and discharging line 124 on or off. The second semiconductor switching device 142 is electrically connected to the negative electrode charging and discharging line 125 and is used to turn the negative electrode charging and discharging line 125 on or off.

[0101] Or see Figure 5 The first semiconductor switching device 132 (Q1 and Q2) is electrically connected to the negative electrode charging and discharging line 125 and is used to turn on or off the negative electrode charging and discharging line 125. The second semiconductor switching device 142 (Q3 and Q4) is electrically connected to the positive electrode charging and discharging line 124 and is used to turn on or off the positive electrode charging and discharging line 124.

[0102] In practice, the positive electrode charging and discharging line 124 and the negative electrode charging and discharging line 125 can be switched on or off by the first semiconductor switching device 132 and the second semiconductor switching device 142, thereby achieving charging and discharging protection for the battery.

[0103] Of course, as needed, the first semiconductor switching device 132 and the second semiconductor switching device 142 can be electrically connected to the positive electrode charging and discharging line 124, or the first semiconductor switching device 132 and the second semiconductor switching device 142 can be electrically connected to the negative electrode charging and discharging line 125. This embodiment of the present disclosure does not limit this.

[0104] This disclosure also provides an electronic device, which includes any of the batteries 1 described above.

[0105] See also some possible implementations. Figure 7 The electronic device also includes a motherboard 2, a first connector 3, and a second connector 4.

[0106] The first connector 3 is located on the side of the flexible circuit board 12 away from the first circuit packaging module 13, and is electrically connected to the flexible circuit board 12 and the motherboard 2. The orthographic projection of the first connector 3 on the flexible circuit board 12 at least partially overlaps with the orthographic projection of the first circuit packaging module 13 on the flexible circuit board 12.

[0107] In implementation, see Figure 7 The first connector 3 and the first circuit packaging module 13 can be located on opposite sides of the first connection portion 122 of the flexible circuit board 12. In this way, while the battery is electrically connected to the motherboard 2 through the first connector 3, the first circuit packaging module 13 can also support the first connector 3, thereby improving the connection stability between the first connector 3 and the flexible circuit board 12 and the motherboard 2.

[0108] Similarly, the second connector 4 is located on the side of the flexible circuit board 12 away from the second circuit packaging module 14, and is electrically connected to the flexible circuit board 12 and the motherboard 2. The orthographic projection of the second connector 4 on the flexible circuit board 12 at least partially overlaps with the orthographic projection of the second circuit packaging module 14 on the flexible circuit board 12.

[0109] In implementation, see Figure 7 The second connector 4 and the second circuit packaging module 14 can be located on opposite sides of the second connection portion 123 of the flexible circuit board 12, respectively. In this way, while the battery is electrically connected to the motherboard 2 through the second connector 4, the second circuit packaging module 14 can also support the second connector 4, thereby improving the connection stability between the second connector 4 and the flexible circuit board 12 and the motherboard 2.

[0110] In some possible implementations, when the flexible circuit board 12 has a positive charging and discharging line 124 and a negative charging and discharging line 125, the first connector 3 is electrically connected to both the positive charging and discharging line 124 and the negative charging and discharging line 125, and the second connector 4 is electrically connected to both the positive charging and discharging line 124 and the negative charging and discharging line 125.

[0111] In implementation, see Figure 6 , Figure 6 One possible connection structure is shown, in which both the first circuit package module 13 and the second circuit package module 14 are provided with a positive terminal and a negative terminal.

[0112] The positive terminal P1+ and negative terminal P1- of the first circuit packaging module 13 can be electrically connected to the first connector 3, thereby realizing the electrical connection between the first connector 3 and the positive charging and discharging line 124 and the negative charging and discharging line 125. Then, through the positive nickel sheet 15 and the negative nickel sheet 16, the electrical connection between the connector 3 and the positive tab 111 and the negative tab 112 of the battery cell 11 is realized.

[0113] The positive terminal P2+ and negative terminal P2- of the second circuit packaging module 14 can be electrically connected to the second connector 4, thereby realizing the electrical connection between the second connector 4 and the positive charging and discharging line 124 and the negative charging and discharging line 125. Then, through the positive nickel sheet 15 and the negative nickel sheet 16, the electrical connection between the connector 4 and the positive tab 111 and the negative tab 112 of the battery cell 11 is realized.

[0114] With the above structure, the first connector 3 and the second connector 4 can be electrically connected to the positive and negative terminals of the battery cell 11 to achieve high-power charging and discharging, thereby improving the battery performance.

[0115] Alternatively, when the flexible circuit board 12 has a positive charging / discharging line 124 and a negative charging / discharging line 125, the first connector 3 is electrically connected to the positive charging / discharging line 124 and the second connector 4 is electrically connected to the negative charging / discharging line 125; or, the first connector 3 is electrically connected to the negative charging / discharging line 125 and the second connector 4 is electrically connected to the positive charging / discharging line 124.

[0116] In implementation, see Figure 8 , Figure 8 One possible connection structure is shown. The first circuit package module 13 has a positive terminal P+, which can be electrically connected to the first connector 3, thereby realizing the electrical connection between the first connector 3 and the positive charging and discharging line 124, and further realizing the electrical connection between the first connector 3 and the positive nickel sheet 15 and the positive tab 111 of the battery cell 11.

[0117] The second circuit packaging module 14 has a negative terminal P-, which can be electrically connected to the second connector 4, thereby realizing the electrical connection between the second connector 4 and the negative charging and discharging line 125, and further realizing the electrical connection between the second connector 4 and the negative nickel sheet 16 and the negative tab 112 of the battery cell 11.

[0118] Through the above structure, the battery achieves electrical connection between its positive and negative terminals and the mainboard 2 via the first connector 3 and the second connector 4, thereby realizing the charging and discharging control of the battery. Furthermore, since the first connector 3 and the second connector 4 are only electrically connected to one of the positive charging / discharging line 124 and the negative charging / discharging line 125 respectively, the wiring layout on the flexible circuit board 12 is simplified, facilitating manufacturing. At the same time, more space is left on the flexible circuit board 12 for installing overcurrent copper foil or connecting multiple tabs, thus ensuring that the battery cell 11 can perform high-power charging and discharging, reducing the battery's internal resistance, increasing the charging and discharging speed, and further improving the battery's performance.

[0119] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0120] This disclosure provides a battery in which, on the one hand, a first-stage battery protection circuit and a second-stage battery protection circuit are respectively encapsulated in a first circuit encapsulation module 13 and a second circuit encapsulation module 14. These two encapsulation modules replace multiple scattered protection devices in related technologies, thereby reducing the volume of the battery protection-related components. On the other hand, since there is no longer a need to provide strong support for multiple scattered protection devices, a flexible circuit board 12 replaces the protection circuit board in related technologies, further reducing the volume of the battery protection-related components. Through these two structural aspects, the volume of the battery protection-related components is reduced, thereby reducing the space occupied by the battery protection-related components in the battery mounting slot of the electronic device. While maintaining the overall battery size, the volume of the cell 11 can be effectively increased, thereby improving the battery capacity.

[0121] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A battery, characterized in that, The battery (1) includes a cell (11), a flexible circuit board (12), a first circuit packaging module (13), and a second circuit packaging module (14); The flexible circuit board (12) is located at one end of the battery cell (11) and is electrically connected to the battery cell (11); Both the first circuit encapsulation module (13) and the second circuit encapsulation module (14) are electrically connected to the flexible circuit board (12). The first circuit encapsulation module (13) is used to encapsulate a section of battery protection circuit, and the second circuit encapsulation module (14) is used to encapsulate two sections of battery protection circuit.

2. The battery according to claim 1, characterized in that, The flexible circuit board (12) includes a central part (121), a first connecting part (122) and a second connecting part (123). The central part (121) is electrically connected to the battery cell (11). The first connecting part (122) and the second connecting part (123) are respectively connected to the two ends of the central part (121). The first circuit package module (13) is located on one side of the first connection part (122) and is electrically connected to the first connection part (122); The second circuit package module (14) is located on one side of the second connection part (123) and is electrically connected to the second connection part (123).

3. The battery of claim 2, wherein, The battery cell (11) has multiple positive tabs (111) and multiple negative tabs (112), and the multiple positive tabs (111) and the multiple negative tabs (112) are electrically connected to the central part (121).

4. The battery of claim 3, wherein, The battery (1) also includes a positive nickel plate (15) and a negative nickel plate (16); The positive electrode nickel sheet (15) is located on the side of the central part (121) near the positive electrode tab (111) and is electrically connected to the central part (121) and the plurality of positive electrode tabs (111); The negative electrode nickel sheet (16) is located on the side of the central portion (121) near the negative electrode tab (112) and is electrically connected to the central portion (121) and the plurality of negative electrode tabs (112).

5. The battery of claim 3, wherein, The plurality of positive tabs (111) and the plurality of negative tabs (112) are all welded to the central part (121).

6. The battery according to claim 1, characterized in that, The first circuit packaging module (13) or the second circuit packaging module (14) is also used to package a power detection circuit.

7. The battery according to any one of claims 1-6, characterized in that, The first circuit package module (13) includes a first control chip (131), at least one first semiconductor switch device (132) and at least one first passive device (133). The first control chip (131), the first semiconductor switch device (132) and the first passive device (133) are electrically connected and are all electrically connected to the flexible circuit board (12). The second circuit package module (14) includes a second control chip (141), at least one second semiconductor switch (142) and at least one second passive device (143). The second control chip (141), the second semiconductor switch (142) and the second passive device (143) are electrically connected and are all electrically connected to the flexible circuit board (12).

8. The battery according to claim 7, characterized in that, The flexible circuit board (12) has a positive charging and discharging line (124) and a negative charging and discharging line (125). The positive charging and discharging line (124) is electrically connected to the positive tab (111) of the battery cell (11), and the negative charging and discharging line (125) is electrically connected to the negative tab (112) of the battery cell (11). The first semiconductor switch (132) is electrically connected to the positive electrode charging / discharging line (124) for turning the positive electrode charging / discharging line (124) on or off; the second semiconductor switch (142) is electrically connected to the negative electrode charging / discharging line (125) for turning the negative electrode charging / discharging line (125) on or off; or, The first semiconductor switch (132) is electrically connected to the negative electrode charging and discharging line (125) and is used to turn on or off the negative electrode charging and discharging line (125). The second semiconductor switch (142) is electrically connected to the positive electrode charging and discharging line (124) and is used to turn on or off the positive electrode charging and discharging line (124).

9. An electronic device, comprising: The electronic device includes the battery (1) as described in any one of claims 1-8.

10. The electronic device of claim 9, wherein, The electronic device also includes a motherboard (2), a first connector (3), and a second connector (4); The first connector (3) is located on the side of the flexible circuit board (12) away from the first circuit packaging module (13) and is electrically connected to the flexible circuit board (12) and the motherboard (2). The orthographic projection of the first connector (3) on the flexible circuit board (12) at least partially overlaps with the orthographic projection of the first circuit packaging module (13) on the flexible circuit board (12). The second connector (4) is located on the side of the flexible circuit board (12) away from the second circuit packaging module (14) and is electrically connected to the flexible circuit board (12) and the motherboard (2). The orthographic projection of the second connector (4) on the flexible circuit board (12) at least partially overlaps with the orthographic projection of the second circuit packaging module (14) on the flexible circuit board (12).

11. The electronic device of claim 10, wherein, When the flexible circuit board (12) has a positive charging and discharging line (124) and a negative charging and discharging line (125), the first connector (3) is electrically connected to both the positive charging and discharging line (124) and the negative charging and discharging line (125), and the second connector (4) is electrically connected to both the positive charging and discharging line (124) and the negative charging and discharging line (125).

12. The electronic device of claim 10, wherein, When the flexible circuit board (12) has a positive charging / discharging line (124) and a negative charging / discharging line (125), the first connector (3) is electrically connected to the positive charging / discharging line (124), and the second connector (4) is electrically connected to the negative charging / discharging line (125); or, The first connector (3) is electrically connected to the negative electrode charging and discharging line (125), and the second connector (4) is electrically connected to the positive electrode charging and discharging line (124).

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