Battery protection components and batteries

Abstract

This utility model relates to the field of battery technology, specifically to a battery protection component and a battery. The battery includes a cell and a battery protection component. The battery protection component includes a first flexible plate, a first electronic device, a first rigid plate, and a second rigid plate. The first electronic device is disposed on the first flexible plate. The first and second rigid plates are connected to both ends of the first flexible plate. A groove is formed between the first rigid plate, the first flexible plate, and the second rigid plate. The first electronic device is distributed within the groove. The first rigid plate is connected to the positive electrode of the cell, and the second rigid plate is connected to the negative electrode of the cell. This battery protection component reduces the overall thickness, thereby reducing the overall packaging space occupied by the battery, which is beneficial for the ultra-thin design requirements of mobile phones, computers, and other electronic devices that incorporate this battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery protection component and a battery. Background Technology

[0002] To meet user demand, electronic products such as mobile phones and tablets are being developed with fast charging technology. The maximum current carrying capacity of these products during charging can now reach 12A or higher.

[0003] To enable fast charging of electronic product batteries, batteries typically employ a dual-connector output terminal design, allowing simultaneous charging via two connectors (i.e., each connector is designed with a positive and a negative power terminal). Correspondingly, battery protection components are often designed as a dual flexible printed circuit (FPC) structure, where flexible boards are soldered to both ends of a rigid printed circuit board (PCB), and electronic components are placed on both sides of the PCB.

[0004] However, the battery protection components provided by the relevant technologies require a large amount of space, which in turn results in a large overall packaging space occupied by the battery with the battery protection components, which is not conducive to the ultra-thin requirements of electronic devices such as mobile phones and tablets. Utility Model Content

[0005] The purpose of this utility model is to provide a battery protection component and a battery. The battery protection component can be used in the battery, and the overall thickness of the battery protection component is reduced so as to reduce the overall packaging space occupied by the battery, which is beneficial to the ultra-thin design requirements of mobile phones, computers and other electronic devices that are equipped with the battery.

[0006] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides a battery protection component, comprising: First flexible plate; The first electronic device is disposed on the first flexible plate; The first rigid plate is connected to one end of the first flexible plate; A second rigid plate is connected to the end of the first flexible plate away from the first rigid plate; wherein... A groove is formed between the first rigid plate, the first flexible plate, and the second rigid plate; a first electronic device is disposed within the groove.

[0007] In an optional embodiment, the battery protection assembly further includes a second electronic device disposed on the side of the first flexible plate opposite to the first electronic device.

[0008] In an optional implementation, the height of the first electronic device is greater than the height of the second electronic device; Both the first rigid plate and the second rigid plate have an assembly side. The first flexible plate is connected to the assembly side of the first rigid plate and the assembly side of the second rigid plate, and the side of the first flexible plate connected to the assembly side forms a groove together with the first rigid plate and the second rigid plate.

[0009] In an optional embodiment, the battery protection assembly further includes a third electronic device, which is disposed on at least one of the mounting sides of the first rigid plate and the second rigid plate.

[0010] In an optional embodiment, at least one of the first electronic device, the second electronic device, and the third electronic device has an adhesive layer or a plastic sealant layer attached to its exterior.

[0011] In an optional embodiment, the first flexible plate has a stress relief zone, and neither the first electronic device nor the second electronic device is disposed in the stress relief zone.

[0012] In an alternative embodiment, the first electronic device is spaced apart from or bonded to at least one of the first rigid plate and the second rigid plate.

[0013] In an alternative embodiment, the first electronic device is electrically connected to at least one of the first rigid plate and the second rigid plate via a signal line.

[0014] In an alternative embodiment, at least one of the first rigid plate and the second rigid plate is connected to a structural member for connection with the battery cell.

[0015] In an optional embodiment, the battery protection assembly further includes a second flexible plate and a third flexible plate, wherein the second flexible plate is connected to the end of the first rigid plate away from the first flexible plate, and the third flexible plate is connected to the end of the second rigid plate away from the first flexible plate; wherein, The second flexible board is connected to a first output terminal, which is connected to one of a power positive PIN and a power negative PIN. The third flexible board is connected to a second output terminal, which is connected to either the positive power PIN or the negative power PIN.

[0016] Secondly, this utility model provides a battery, including a battery cell and a battery protection component according to any of the foregoing embodiments; a first rigid plate is connected to the positive electrode of the battery cell, and a second rigid plate is connected to the negative electrode of the battery cell.

[0017] The beneficial effects of the battery protection component provided in this embodiment of the present invention include: the battery protection component provided in this embodiment of the present invention connects a first rigid plate and a second rigid plate to both ends of the first flexible plate, so that a groove is formed between the first rigid plate, the first flexible plate and the second rigid plate, and the first electronic device disposed on the first flexible plate is located in the groove, thereby reducing the overall thickness of the battery protection component, that is, reducing the space occupied by the battery protection component.

[0018] The battery provided in this embodiment of the present invention has all the beneficial effects of the aforementioned battery protection component, such as: reducing the space occupied by the battery protection component; this helps to reduce the overall packaging space occupied by the battery, so that the electronic device configured with the battery can achieve an ultra-thin structural design; moreover, the space saved by the battery protection component can be converted into an increase in the volume of the battery cell, which helps to increase the battery capacity. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the battery protection component in an embodiment of the present invention from a first-view perspective; Figure 2 This is a schematic diagram of the battery protection component in an embodiment of the present invention from a second perspective; Figure 3 This is a schematic diagram of the battery protection component in an embodiment of the present invention from a third-person perspective; Figure 4 This is an exploded view of the battery protection component in an embodiment of the present invention.

[0021] Icons: 010 - Battery protection assembly; 100 - First flexible plate; 101 - Groove; 102 - Stress relief area; 110 - First electronic component; 120 - Second electronic component; 210 - First rigid plate; 220 - Second rigid plate; 230 - Third electronic component; 240 - Assembly side; 250 - Structural component; 251 - Notch; 310 - Second flexible plate; 311 - First output end; 320 - Third flexible plate; 321 - Second output end. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0028] In order to enable fast charging, electronic devices (such as mobile phones and tablets) provided by related technologies usually design the battery protection components of the battery configuration as a dual-connector output structure, so as to charge the battery simultaneously using two connector outputs (that is, each connector is designed with a positive and a negative power terminal). The battery protection components corresponding to this structure include two flexible boards (FPCs) and one rigid board (PCB). The two flexible boards are respectively soldered to both ends of the rigid board, and electronic components are set on both sides of the rigid board.

[0029] The inventors discovered that the battery protection components provided by the related technologies not only occupy a large space, resulting in a large packaging space required for the entire battery, which is not conducive to the ultra-thin design of electronic devices, but also have the problem of unreasonable wiring of signal lines and power lines, reducing space utilization.

[0030] To address the aforementioned issues, this embodiment provides a novel battery protection component structure for batteries. This component has a reduced overall thickness, thereby decreasing the overall packaging space occupied by the battery. This facilitates the ultra-thin design requirements of electronic devices such as mobile phones and computers that incorporate this battery. Furthermore, the space saved by the battery protection component can be converted into increased cell volume, thereby increasing battery capacity. Simultaneously, it optimizes wiring and improves space utilization. The battery protection component and battery of this embodiment will be described in detail below with reference to the accompanying drawings.

[0031] The battery in this embodiment includes a battery cell and a battery protection component, wherein the battery protection component is connected to the battery cell.

[0032] Please refer to Figure 1 and Figure 2 The battery protection assembly 010 includes a first flexible plate 100, a first electronic device 110, a first rigid plate 210, and a second rigid plate 220. The first electronic device 110 is disposed on the first flexible plate 100, and the first rigid plate 210 and the second rigid plate 220 are respectively connected to the two ends of the first flexible plate 100. A groove 101 is formed between the first rigid plate 210, the first flexible plate 100, and the second rigid plate 220, and the first electronic device 110 is disposed in the groove 101.

[0033] By placing the first electronic component 110 within a groove 101 formed between the first rigid plate 210, the first flexible plate 100, and the second rigid plate 220, the thickness of the battery protection assembly 010 can be effectively reduced, thereby reducing the space occupied by the battery protection assembly 010. This helps to reduce the overall packaging space occupied by the battery, enabling the electronic device containing the battery to achieve an ultra-thin structural design.

[0034] Optionally, the first electronic device 110 is electrically connected to the first rigid board 210 and the second rigid board 220 via signal lines. Only signal lines are used between the first electronic device 110, the first rigid board 210, and the second rigid board 220, and power lines are not used, which helps to form a more reasonable wiring layout and improves space utilization.

[0035] Of course, in other embodiments, the first electronic device 110 may be electrically connected to the first rigid board 210 or the second rigid board 220 only via signal lines.

[0036] Alternatively, please refer to Figure 1 , Figure 2 and Figure 3 The battery protection assembly 010 also includes a second electronic device 120, which is disposed on the side of the first flexible plate 100 opposite to the first electronic device 110. The thickness of the flexible plate is typically thinner than that of the rigid plate. Further disposing of the second electronic device 120 on the side of the first flexible plate 100 opposite to the first electronic device 110 still helps ensure that the battery protection assembly 010 has a relatively thin thickness, thereby reducing the packaging space occupied by the battery and facilitating the ultra-thin design of electronic devices such as mobile phones and tablets.

[0037] Optionally, the first electronic device 110 and the second electronic device 120 include, but are not limited to, a protection IC, a power meter IC, and a temperature sensor.

[0038] Alternatively, please refer to Figure 1 and Figure 4 The height D1 of the first electronic device 110 is greater than the height D2 of the second electronic device 120. Both the first rigid plate 210 and the second rigid plate 220 have mounting sides 240. The first flexible plate 100 is connected to the mounting sides 240 of both the first rigid plate 210 and the second rigid plate 220. The side of the first flexible plate 100 connected to the mounting sides 240, together with the first rigid plate 210 and the second rigid plate 220, forms a groove 101. This arrangement allows the taller first electronic device 110 to be housed within the groove 101, ensuring that the battery protection assembly 010 has a relatively thin overall structure.

[0039] Optionally, the first flexible plate 100 has a stress relief area 102, while the first electronic device 110 and the second electronic device 120 are not disposed in the stress relief area 102. This arrangement facilitates stress relief for the first flexible plate 100, thereby improving the problem of easy damage to the first flexible plate 100 and helping to extend the service life of the battery protection assembly 010.

[0040] For example, the battery protection assembly 010 includes two first electronic devices 110 and two second electronic devices 120. The two first electronic devices 110 are disposed at intervals on one side of the first flexible plate 100, and the two second electronic devices 120 are disposed at intervals on the other side of the first flexible plate 100. The two first electronic devices 110 and the two second electronic devices 120 are distributed in a one-to-one correspondence. The portion of the first flexible plate 100 between the two first electronic devices 110 is a stress relief area 102, that is, the portion of the first flexible plate 100 between the two second electronic devices 120 is a stress relief area 102.

[0041] Optionally, the first electronic device 110 and the second electronic device 120 are both connected to the first flexible plate 100 by welding.

[0042] It should be understood that the second electronic device 120 is not necessary; that is, in other embodiments, the second electronic device 120 may not be provided on the side of the first flexible plate 100 away from the first electronic device 110.

[0043] Alternatively, please refer to Figure 1 and Figure 4 The battery protection assembly 010 also includes a third electronic device 230. The third electronic device 230 is provided on the mounting side 240 of both the first rigid plate 210 and the second rigid plate 220. By providing the third electronic device 230 only on the mounting sides 240 of the first and second rigid plates 210, the problem of increased thickness of the battery protection assembly 010 due to the inclusion of electronic devices can be mitigated. In other words, it ensures that the battery protection assembly 010 maintains a relatively thin structural design, thereby reducing the packaging space occupied by the battery and facilitating the ultra-thin design of electronic devices such as mobile phones and tablets.

[0044] Optionally, the third electronic device 230 includes, but is not limited to, MOS (i.e., MOSFET, Metal-Oxide-Semiconductor Field-Effect Transistor) and precision resistors (e.g., current sensing resistors, voltage sampling divider resistors, reference voltage resistors, signal conditioning resistors, etc.).

[0045] Optionally, the third electronic device 230 is connected to the corresponding first rigid plate 210 by welding.

[0046] Optionally, the third electronic device 230 is connected to the corresponding second rigid plate 220 by soldering.

[0047] It should be understood that the third electronic device 230 is not necessary; that is, in other embodiments, the third electronic device 230 is not provided on the mounting side 240 of at least one of the first rigid plate 210 and the second rigid plate 220.

[0048] Optionally, at least one of the first electronic device 110, the second electronic device 120, and the third electronic device 230 is fixed by applying adhesive or plastic sealing, that is, at least one of the first electronic device 110, the second electronic device 120, and the third electronic device 230 has an adhesive layer or a plastic sealing layer on its exterior.

[0049] For example, the bottom of at least one of the first electronic device 110, the second electronic device 120 and the third electronic device 230 can be filled and fixed with glue; or, at least one of the first electronic device 110, the second electronic device 120 and the third electronic device 230 can be plastic-sealed and fixed to the corresponding flexible board or rigid board by a plastic sealing process.

[0050] Optionally, the first electronic device 110 and at least one of the first rigid plate 210 and the second rigid plate 220 are spaced apart.

[0051] For example, two first electronic devices 110 are disposed on the first flexible plate 100, one of which is disposed adjacent to the first rigid plate 210 and is spaced apart from the first rigid plate 210, and the other is disposed adjacent to the second rigid plate 220 and is spaced apart from the second rigid plate 220.

[0052] Of course, in other embodiments, the first electronic device 110 is connected to at least one of the first rigid plate 210 and the second rigid plate 220 by adhesive (i.e., bonding).

[0053] For example, two first electronic devices 110 are disposed on the first flexible plate 100. One first electronic device 110 is spaced apart from the first rigid plate 210, and the first electronic device 110 and the first rigid plate 210 are fixed together by adhesive in the gap between them. The other first electronic device 110 is spaced apart from the second rigid plate 220. Alternatively, two first electronic devices 110 are disposed on the first flexible plate 100. One first electronic device 110 is spaced apart from the first rigid plate 210, and the other first electronic device 110 is spaced apart from the second rigid plate 220. The first electronic device 110 and the second rigid plate 220 are fixed together by adhesive in the gap between them. Alternatively, in other embodiments, two first electronic devices 110 are disposed on the first flexible plate 100, one of which is spaced apart from the first rigid plate 210, and the first electronic device 110 and the first rigid plate 210 are fixed together by adhesive in the gap between the first electronic device 110 and the first rigid plate 210; the other first electronic device 110 is spaced apart from the second rigid plate 220, and the first electronic device 110 and the second rigid plate 220 are fixed together by adhesive in the gap between the first electronic device 110 and the second rigid plate 220.

[0054] Alternatively, please refer to Figure 3Both the first rigid plate 210 and the second rigid plate 220 are connected to structural members 250 for connecting to the battery cell. The structural member 250 connected to the first rigid plate 210 is connected to one of the positive and negative terminals of the battery cell, and the structural member 250 connected to the second rigid plate 220 is connected to the other of the positive and negative terminals of the battery cell.

[0055] Optionally, the thickness direction of the first rigid plate 210 and the second rigid plate 220 ( Figure 1 The side of the direction of the middle arrow ab) is the assembly side 240, and the width direction of the first rigid plate 210 and the second rigid plate 220 ( Figure 3 A structural component 250 is connected to the side of the battery cell (in the direction of the middle arrow cd). When assembling the battery protection assembly 010 onto the battery cell, the battery protection assembly 010 can be spliced ​​to the end of the battery cell along the width direction of the first rigid plate 210 and the second rigid plate 220, and the first rigid plate 210 and the second rigid plate 220 can be electrically connected to the battery cell through their respective connecting structural components 250. This ensures the ease of operation of connecting the first rigid plate 210 and the second rigid plate 220 to the battery cell, and also ensures a thinner overall battery structure design.

[0056] Optionally, the width direction of the first rigid plate 210 and the second rigid plate 220 ( Figure 3 A notch 251 is provided on the side of the arrow (in the direction of the middle arrow cd), and structural components 250 are distributed within the notch 251.

[0057] Optionally, the structural component 250 can be connected to the first rigid plate 210 and the second rigid plate 220 by welding.

[0058] Of course, in other embodiments, the structural member 250 may be connected only to the first rigid plate 210 or the second rigid plate 220 to be electrically connected to the battery cell through the structural member 250.

[0059] Optionally, the electrical connection between the structural component 250 and the battery cell can be made by means including but not limited to contact connection and plug-in connection.

[0060] Alternatively, please refer to Figure 2The battery protection assembly 010 also includes a second flexible plate 310 and a third flexible plate 320, both used to connect to the host of the electronic device. The second flexible plate 310 is connected to the end of the first rigid plate 210 away from the first flexible plate 100, and the third flexible plate 320 is connected to the end of the second rigid plate 220 away from the first flexible plate 100. The second flexible plate 310 is connected to a first output terminal 311, which is connected to one of a positive power PIN and a negative power PIN. The third flexible plate 320 is connected to a second output terminal 321, which is connected to the other of a positive power PIN and a negative power PIN. This arrangement allows the power wiring to connect to the first output terminal 311 connected to the second flexible plate 310 and the second output terminal 321 connected to the third flexible plate 320, improving the wiring layout and increasing the efficient use of space.

[0061] To further ensure that the battery protection assembly 010 has a thinner structural design, the second flexible plate 310 is connected to the assembly side 240 of the first rigid plate 210, while the third flexible plate 320 is connected to the assembly side 240 of the second rigid plate 220.

[0062] Optionally, at least one of the first output terminal 311 and the second output terminal 321 may also be configured with a signal PIN.

[0063] Of course, a signal PIN is not necessary. In some implementations, neither the first output terminal 311 nor the second output terminal 321 is provided with a signal PIN.

[0064] It should be noted that the first flexible board 100, the second flexible board 310 and the third flexible board 320 are all FPCs; the first rigid board 210 and the second rigid board 220 are both PCBs.

[0065] It should also be noted that the connection methods between the first rigid plate 210 and the first flexible plate 100 and the second flexible plate 310, and the connection methods between the second rigid plate 220 and the first flexible plate 100 and the third flexible plate 320, include but are not limited to solder paste reflow soldering, thermoforming, laser welding, and ACF conductive adhesive connection.

[0066] In summary, the battery protection component 010 of this utility model connects a first rigid plate 210 and a second rigid plate 220 to both ends of the first flexible plate 100, so that a groove 101 is formed between the first rigid plate 210, the first flexible plate 100 and the second rigid plate 220, and the first electronic device 110 disposed on the first flexible plate 100 is located in the groove 101. This reduces the overall thickness of the battery protection component 010, that is, reduces the space occupied by the battery protection component 010. The overall packaging space occupied by the battery with the battery protection component 010 is reduced, so that the electronic device configured with the battery can achieve an ultra-thin structural design. Moreover, the space saved by the battery protection component 010 can be converted into an increase in the volume of the battery cell, which is beneficial to increasing the battery capacity.

[0067] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A battery protection component, characterized in that, include: First flexible plate (100); A first electronic device (110) is disposed on the first flexible plate (100); A first rigid plate (210) is connected to one end of the first flexible plate (100); A second rigid plate (220) is connected to the end of the first flexible plate (100) away from the first rigid plate (210); wherein, A groove (101) is formed between the first rigid plate (210), the first flexible plate (100) and the second rigid plate (220); the first electronic device (110) is disposed in the groove (101).

2. The battery protection assembly according to claim 1, characterized in that, The battery protection assembly also includes a second electronic device (120), which is disposed on the side of the first flexible plate (100) opposite to the first electronic device (110).

3. The battery protection assembly according to claim 2, characterized in that, The height of the first electronic device (110) is greater than the height of the second electronic device (120); Both the first rigid plate (210) and the second rigid plate (220) have an assembly side (240). The first flexible plate (100) is connected to the assembly side (240) of the first rigid plate (210) and the assembly side (240) of the second rigid plate (220). The first flexible plate (100) is connected to one side of the assembly side (240) and together with the first rigid plate (210) and the second rigid plate (220) form the groove (101).

4. The battery protection assembly according to claim 3, characterized in that, The battery protection assembly further includes a third electronic device (230), which is disposed on at least one of the mounting side (240) of the first rigid plate (210) and the mounting side (240) of the second rigid plate (220).

5. The battery protection assembly according to claim 4, characterized in that, At least one of the first electronic device (110), the second electronic device (120) and the third electronic device (230) has an adhesive layer or a plastic sealant layer attached to its exterior.

6. The battery protection assembly according to claim 2, characterized in that, The first flexible plate (100) has a stress relief area (102), and neither the first electronic device (110) nor the second electronic device (120) is disposed in the stress relief area (102).

7. The battery protection assembly according to claim 1, characterized in that, The first electronic device (110) is spaced apart from or bonded to at least one of the first rigid plate (210) and the second rigid plate (220).

8. The battery protection assembly according to any one of claims 1-7, characterized in that, The first electronic device (110) is electrically connected to at least one of the first rigid plate (210) and the second rigid plate (220) via a signal line.

9. The battery protection assembly according to any one of claims 1-7, characterized in that, At least one of the first rigid plate (210) and the second rigid plate (220) is connected to a structural member (250) for connection with the battery cell.

10. The battery protection assembly according to any one of claims 1-7, characterized in that, The battery protection assembly further includes a second flexible plate (310) and a third flexible plate (320), wherein the second flexible plate (310) is connected to the end of the first rigid plate (210) away from the first flexible plate (100), and the third flexible plate (320) is connected to the end of the second rigid plate (220) away from the first flexible plate (100); wherein, The second flexible plate (310) is connected to a first output terminal (311), and the first output terminal (311) is connected to one of a power positive PIN and a power negative PIN; The third flexible plate (320) is connected to a second output terminal (321), and the second output terminal (321) is connected to the other of the power positive PIN and the power negative PIN.

11. A battery, characterized in that, Includes a battery cell and a battery protection assembly as described in any one of claims 1-10; the first rigid plate (210) is connected to the positive electrode of the battery cell, and the second rigid plate (220) is connected to the negative electrode of the battery cell.

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