Battery and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery and electric equipment, the battery has a first direction, a second direction and a third direction which intersect in pairs, and the battery comprises a circuit board assembly, a battery cell assembly and a shell. The battery cell assembly is provided with a tab, and the battery cell assembly and the circuit board assembly are distributed along a first direction; a sinking groove is formed in the side wall, in the third direction, of the shell, the circuit board assembly is located in the sinking groove, a first through groove is formed in the side wall, facing the battery cell assembly, of the sinking groove in the first direction, and the tab penetrates through the first through groove to be connected with the circuit board assembly. According to the invention, the circuit board assembly can be protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery and a power consumption device. BACKGROUND

[0002] As an important component in portable electronic devices, electric vehicles and energy storage systems, the packaging technology of batteries is directly related to the performance, safety and service life of batteries. As a core component in batteries, PCM (Battery Management Module) is responsible for monitoring, protecting and balancing management of batteries. The connection and packaging method of the battery cell is crucial. A good packaging scheme not only improves the overall performance of the battery, but also effectively prevents damage to the internal structure of the battery by external factors.

[0003] In the current conventional battery packaging scheme, the connection between PCM and the battery cell usually adopts welding or plug-in connection, etc., to ensure that PCM can accurately monitor and control the working state of the battery cell. After the connection is completed, the entire battery will be subjected to plastic encapsulation treatment to form a protective shell, preventing the intrusion of external factors such as moisture and dust, while providing a certain mechanical strength to protect the internal structure from external damage. This direct plastic encapsulation forming packaging scheme has certain advantages in cost control, production efficiency and process maturity, and is widely used in the production of various batteries.

[0004] However, the direct plastic encapsulation forming scheme in the prior art also has certain technical problems. Since the PCM and the battery cell are directly exposed to the plastic encapsulation material, although the plastic encapsulation layer can provide a certain protection, during the assembly process, the connection between the PCM and the battery cell, especially the tab part, may be damaged due to stress concentration or external impact, resulting in a decrease in battery performance, and even causing safety accidents. UTILITY MODEL CONTENT

[0005] The present application provides a battery and a power consumption device to solve the problem of easy damage of the circuit board during battery assembly.

[0006] In a first aspect, the present application provides a battery having a first direction, a second direction and a third direction intersecting with each other, comprising a circuit board assembly, a battery cell assembly and a shell. The battery cell assembly is provided with a tab, and the battery cell assembly and the circuit board assembly are distributed along the first direction. The shell is provided with a sink along the side wall of the third direction, the circuit board assembly is located in the sink, and the sink is provided with a first through slot on the side wall facing the battery cell assembly along the first direction, and the tab penetrates through the first through slot and is connected with the circuit board assembly.

[0007] Beneficial effects: By designing the circuit board assembly, the cell assembly and the shell with a specific structure, the effective connection and packaging of the circuit board assembly and the cell assembly are realized. The setting of the shell can completely cover the tab, which can improve the reliability in the injection molding and production process. This structure not only improves the overall performance of the battery, but also significantly enhances the safety protection of the circuit board assembly and reduces the risk in the process. By increasing the shell, the product strength and stability can be improved, so that the thickness of the circuit board assembly can be reduced to achieve the purpose of product size. And by increasing the glue shell, the size of the support site required by the circuit board assembly can be reduced, so that the layout space will increase, and the length of the circuit board assembly can be shortened accordingly, reducing the cost.

[0008] In an optional embodiment, a plurality of first limiting blocks are arranged in the sink groove away from the side wall of the cell assembly along the first direction, and the plurality of first limiting blocks are arranged at intervals along the second direction. The plurality of first limiting blocks are adapted to divide the sink groove into a plurality of accommodation grooves adapted to accommodate components of the circuit board assembly.

[0009] Beneficial effects: By arranging a plurality of first limiting blocks in the sink groove, the circuit board assembly can be accurately positioned to prevent displacement or damage during assembly. At the same time, the accommodation groove formed between the first limiting block and the side wall of the sink groove provides additional protection space for the components of the circuit board assembly, further improving the safety and reliability of the battery. At the same time, it can also avoid the contact between the high temperature of the injection molding material and the components, so that the product can completely avoid damage to the components during the process and the injection molding process.

[0010] In an optional embodiment, a plurality of second limiting blocks are arranged in the first through groove, and the plurality of second limiting blocks are arranged at intervals along the second direction. The circuit board assembly is arranged between the first limiting block and the second limiting block.

[0011] Beneficial effects: By arranging a plurality of second limiting blocks in the first through groove, the circuit board assembly can be further fixed to reduce its movement during injection molding, thereby reducing the stress on the circuit board assembly and improving the stability and service life of the battery.

[0012] In an optional embodiment, it further comprises injection molding glue, the injection molding glue is connected with the side wall of the cell assembly along the first direction towards the circuit board assembly, and the tab, the circuit board assembly and the shell are all arranged in the injection molding glue.

[0013] Beneficial effects: The use of injection molding glue not only enhances the connection strength between the battery cell assembly and the circuit board assembly, but also provides additional waterproof, dustproof and anti-vibration performance. This helps to protect the internal structure of the battery from external environmental damage, improving the reliability and durability of the battery. The use of injection molding glue with the shell can improve the uneven sealing problem of the soft package battery during the injection molding process, and the product appearance will not have burr phenomenon. At the same time, by using injection molding glue to form an integral whole of the battery cell assembly, circuit board assembly and shell, the reliability and stability of the product are improved.

[0014] In an alternative embodiment, at least one side wall of the sink along the second direction is provided with a second through slot, and the output end of the circuit board assembly penetrates through the second through slot and extends out of the shell.

[0015] Beneficial effects: By providing a second through slot on both sides of the sink along the second direction and configuring two output ends, the output signal of the circuit board assembly can be more flexibly connected to external devices. This design improves the versatility and scalability of the battery.

[0016] In an alternative embodiment, a flange structure is further included, the first end of which is connected to the side of the battery cell assembly facing the circuit board along the first direction, the second end of the flange structure is folded towards the battery cell assembly along the third direction, the first end of the tab is connected to the second end of the flange structure, the second end of the tab is folded towards the battery cell assembly in a direction away from the third direction, and the second end of the tab penetrates through the first through slot and is connected to the circuit board assembly.

[0017] Beneficial effects: The design of the flange structure provides additional support and protection for the tab, reducing the risk of damage to the tab during the process. At the same time, the flange structure can also help to position the tab, making it easier to connect to the input end of the circuit board assembly.

[0018] In an alternative embodiment, a first insulating layer and / or a second insulating layer and / or a third insulating layer are further included. The first insulating layer is arranged on the side of the battery cell assembly away from the circuit board assembly along the first direction. Two second insulating layers are arranged on the two sides of the battery cell assembly along the second direction. The third insulating layer is arranged between the flange structure and the input end of the circuit board assembly.

[0019] Beneficial effects: By arranging the first, second and third insulating layers, the electrical connection between the battery cell assembly, flange structure and circuit board assembly is effectively isolated, preventing the occurrence of safety hazards such as short circuit and electric shock. This helps to improve the safety and stability of the battery.

[0020] In an alternative embodiment, a cladding assembly is further included, the cladding assembly comprising a first cladding section, a second cladding section and a third cladding section, the first cladding section being arranged at one side of the battery cell assembly along the third direction, the second cladding section and the third cladding section being arranged at two sides of the battery cell assembly along the second direction respectively, at least a part of the second cladding section and the third cladding section being located at the other side of the battery cell assembly along the third direction, the first cladding section, the second cladding section and the third cladding section being configured as an integrated structure.

[0021] Beneficial effects: The design of the cladding assembly provides comprehensive protection for the battery cell assembly, further enhancing the waterproof, dustproof and shock resistance of the battery. This design makes the battery more suitable for harsh working environments, improving its reliability and durability, and also facilitates maintenance.

[0022] In an alternative embodiment, a gasket is further included, the gasket being arranged between the circuit board assembly and the sink side wall along the first direction, and the gasket being arranged on the output end of the circuit board assembly.

[0023] Beneficial effects: The arrangement of the gasket can evenly distribute the stress received by the circuit board assembly during the injection molding process, reducing the risk of damage to the circuit board assembly. At the same time, the gasket can also prevent direct contact between the circuit board assembly and the sink side wall, reducing the possibility of friction and wear.

[0024] In a second aspect, the present application further provides a power consuming device comprising the above battery.

[0025] Because the power consuming device comprises the battery, it has the same effects as the battery, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 FIG. 1 is a structural schematic diagram of a battery according to an embodiment of the present application;

[0028] Figure 2 FIG. 2 is a structural schematic diagram of a combination state of a shell and a circuit board assembly according to an embodiment of the present application;

[0029] Figure 3 FIG. 3 is a structural schematic diagram of a shell according to an embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the circuit board assembly in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the battery cell assembly in an embodiment of this application;

[0032] Figure 6 for Figure 5 A magnified view of part A in the image;

[0033] Figure 7 This is a schematic diagram of the structure of the first insulator and the second insulator in the embodiments of this application;

[0034] Figure 8 This is a schematic diagram of the structure of the covering component in the embodiments of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Circuit board assembly; 2. Battery cell assembly; 2001. Electrode; 3. Housing; 3001. Slot; 3002. First through slot; 3003. Second through slot; 3004. First limiting block; 3005. Second limiting block; 4. Injection molding; 5. Flanged structure; 6. First insulating layer; 7. Second insulating layer; 8. Third insulating layer; 9. Covering assembly; 9001. First covering section; 9002. Second covering section; 9003. Third covering section; 10. Gasket; 11. Adhesive layer; 12. Folded structure; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The following is combined with Figures 1 to 8 This describes an embodiment of the present application.

[0039] According to the embodiment of the present application, in one aspect, a battery is provided, having a first direction X, a second direction Y and a third direction Z intersecting with each other, comprising a circuit board assembly 1, a cell assembly 2 and a shell 3. The circuit board assembly 1 is a PCM, the cell assembly 2 is provided with a tab 2001, and the cell assembly 2 and the circuit board assembly 1 are distributed along the first direction X. The shell 3 is provided with a sink 3001 on the side wall along the third direction Z, the circuit board assembly 1 is located in the sink 3001, and the sink 3001 is provided with a first through slot 3002 on the side wall facing the cell assembly 2 along the first direction X, and the tab 2001 penetrates through the first through slot 3002 and is connected with the circuit board assembly 1.

[0040] It can be understood that the shell 3 can be provided as a glue shell, that is, a shell 3 structure prefabricated from a heat-conducting glue material. When assembling, the circuit board assembly 1 can be directly inserted into the sink 3001 along the third direction Z to fix the circuit board assembly 1. The first through slot 3002 communicates with the sink 3001, so that the circuit board assembly 1 in the sink 3001 can communicate with the outside, and the first through slot 3002 can realize the extension of the tab 2001 into the sink 3001 to connect with the circuit board assembly 1.

[0041] It should be noted that the cell assembly 2 further comprises a cell, and the cell is connected with the circuit board assembly 1 through the tab 2001. After the tab 2001 is welded with the circuit board assembly 1, since the tab 2001 is exposed at this time, it will increase the difficulty of safety protection in the process, and by entering the shell 3, the safety can be improved. After the tab 2001 is welded with the circuit board assembly 1, if direct plastic packaging is performed, the risk of damage to components in the process will be larger, and the setting of the shell 3 can coat the components, and after the shell 3 is set, the risk can be avoided. In the injection molding process, there will be a needle supporting the circuit board assembly 1, and stress will be generated on the circuit board assembly 1, and the setting of the shell 3 can improve the problem.

[0042] In the embodiment, by designing the circuit board assembly 1, the cell assembly 2 and the shell 3 with a specific structure, the effective connection and packaging of the circuit board assembly 1 and the cell assembly 2 are realized. The setting of the shell 3 can completely coat the tab 2001, and the reliability in the injection molding and production process can be improved. The structure not only improves the overall performance of the battery, but also significantly enhances the safety protection of the circuit board assembly 1, and reduces the risk in the process. By increasing the shell 3, the product strength and stability can be improved, so that the thickness of the circuit board assembly 1 can be reduced to achieve the purpose of product size. And by increasing the glue shell, the size of the support position required by the circuit board assembly 1 can be reduced, so that the layout space will increase, and the length size of the circuit board assembly 1 can be shortened accordingly, and the cost can be reduced.

[0043] In one embodiment, as Figure 3As shown, a plurality of first limiting blocks 3004 are arranged in the sink groove 3001 away from the side of the battery cell assembly 2 along the first direction X, and the plurality of first limiting blocks 3004 are arranged at intervals along the second direction Y. The plurality of first limiting blocks 3004 are adapted to divide the sink groove 3001 into a plurality of accommodation grooves adapted to accommodate components of the circuit board assembly 1.

[0044] It should be noted that the components can be coated, at which time the components are outward, that is, the components are arranged on the side away from the battery cell assembly 2 along the first direction X. If direct plastic packaging is performed, the risk of damage to the components during the process is relatively large. The arrangement of the shell 3 can coat the components. By arranging the shell 3, the risk can be avoided. The arrangement of the accommodation groove can accommodate the components, and can also avoid the components from contacting the inner wall of the shell 3, further achieving the protection effect.

[0045] It can be understood that the accommodation groove is formed between the two adjacent first limiting blocks 3004 and between the first limiting block 3004 and the two side walls of the sink groove 3001 along the second direction Y.

[0046] In the embodiment, a plurality of first limiting blocks 3004 are arranged in the sink groove 3001, which can accurately position the circuit board assembly 1 and prevent displacement or damage of the circuit board assembly 1 during assembly. At the same time, the accommodation groove formed between the first limiting block 3004 and the side wall of the sink groove 3001 provides an additional protection space for the components of the circuit board assembly 1, further improving the safety and reliability of the battery. At the same time, the high temperature of the injection molding glue 4 when it enters can also avoid contacting the components, so that the product is completely protected from damage during the process and the injection molding process.

[0047] In one embodiment, as shown in Figure 2 and Figure 3 A plurality of second limiting blocks 3005 are arranged in the first through groove 3002, and the plurality of second limiting blocks 3005 are arranged at intervals along the second direction Y. The circuit board assembly 1 is arranged between the first limiting block 3004 and the second limiting block 3005.

[0048] It should be noted that the first limiting block 3004, the second limiting block 3005 and the shell 3 can be constructed as an integrated structure. The channel can be formed between the two adjacent second limiting blocks 3005 and between the second limiting block 3005 at the two ends along the second direction Y and the groove wall of the first through groove 3002. The tab 2001 can pass through the channel to connect with the circuit board assembly 1.

[0049] It should be noted that the input end arranged on the circuit board assembly 1 can be arranged as one or more of a nickel sheet, a nickel brick, and a nickel block. It can also be arranged as a clamp structure composed of two nickel sheets. The tab 2001 is directly inserted between the clamp structure and then welded, which can play an auxiliary positioning role.

[0050] In this embodiment, by providing a plurality of second limiting blocks 3005 in the first through groove 3002, the circuit board assembly 1 can be further fixed, reducing its movement during the injection molding process, thereby reducing the stress on the circuit board assembly 1 and improving the stability and service life of the battery.

[0051] In one embodiment, such as Figure 1 As shown, it also includes injection molding compound 4, which is connected to the side wall of the circuit board assembly 1 along the first direction X of the battery cell assembly 2, and the tab 2001, the circuit board assembly 1 and the housing 3 are all disposed in the injection molding compound 4.

[0052] Optionally, injection molding compound 4 can form a molding compound layer. Injection molding compound 4 can be made of thermally conductive material with a thermal conductivity of about 1W, which can improve the heat dissipation of the product.

[0053] Optionally, the product can be fully encapsulated using injection molding 4, achieving an IPX7 waterproof rating.

[0054] In this embodiment, the use of injection molding compound 4 not only enhances the connection strength between the cell assembly 2 and the circuit board assembly 1, but also provides additional waterproof, dustproof, and shockproof performance. This helps protect the internal structure of the battery from damage by the external environment, improving the battery's reliability and durability. The injection molding compound 4 works in conjunction with the casing 3 to improve the uneven sealing problem during the injection molding process of the soft-pack battery, preventing burrs from appearing on the product's appearance. Simultaneously, by using injection molding compound 4 to encapsulate the cell assembly 2, circuit board assembly 1, and casing 3 into a single unit, the reliability and stability of the product are improved.

[0055] In one embodiment, a second through groove 3003 is provided on one side wall of the sink 3001 along the second direction Y, and the output end of the circuit board assembly 1 passes through the second through groove 3003 and extends out from the housing 3.

[0056] In this embodiment, both the first through groove 3002 and the second through groove 3003 are connected to the sink 3001, so that the circuit board assembly 1 in the sink 3001 can be connected to the outside. The first through groove 3002 can allow the tab 2001 to extend into the sink 3001 and connect with the circuit board assembly 1. The second through groove 3003 can allow the output end of the circuit board assembly 1 to be led out from the housing 3.

[0057] In one embodiment, the sink 3001 has two sidewalls with second through slots 3003 along the second direction Y, and the circuit board assembly 1 has two output terminals. The two output terminals of the circuit board assembly 1 pass through the two second through slots 3003 respectively and extend out from the housing 3.

[0058] It should be noted that the circuit board assembly 1 can be provided with two output terminals, which can be led out through two second through slots 3003 respectively. That is, the configuration of one second through slot 3003 can be adapted to the circuit board assembly 1 with a single FPC, and the configuration of two second through slots 3003 can be adapted to the circuit board assembly 1 with a dual FPC. The FPC is a flexible printed circuit board.

[0059] In this embodiment, a second through slot 3003 is provided on both sidewalls of the sink 3001 along the second direction Y, and two output terminals are configured thereon, so that the output signal of the circuit board assembly 1 can be more flexibly connected to external devices. This design improves the versatility and scalability of the battery.

[0060] In one embodiment, such as Figure 6 As shown, it also includes a flange structure 5, the first end of which is connected to the side of the battery cell assembly 2 facing the circuit board along the first direction X. The second end of the flange structure 5 is folded towards the battery cell assembly 2 along the third direction Z. The first end of the tab 2001 is connected to the second end of the flange structure 5. The second end of the tab 2001 is folded towards the battery cell assembly 2 in a direction away from the third direction Z. The second end of the tab 2001 passes through the first through groove 3002 and is connected to the circuit board assembly 1.

[0061] Optionally, such as Figure 5 As shown, folded edge structures 12 can be provided on both sides of the battery cell assembly 2 along the second direction Y, and the folded edge structures 12 are the same as the flange structure 5. The second covering section 9002 and the third covering section 9003 are respectively provided on the two folded edge structures 12.

[0062] Optionally, such as Figure 6 As shown, an adhesive layer 11 can be provided between the flange structure 5 and the battery cell assembly 2 to fix the flange structure 5. The adhesive layer 11 can be set as a thermally conductive adhesive or other adhesive layer with thermally conductive and heat-resistant properties.

[0063] In this embodiment, the flanged structure 5 provides additional support and protection for the tab 2001, reducing the risk of damage to the tab 2001 during the manufacturing process. Simultaneously, the flanged structure 5 also helps position the tab 2001, making it easier to connect to the input terminal of the circuit board assembly 1.

[0064] In one embodiment, such as Figure 6 and Figure 7 As shown, it also includes a first insulating layer 6, a second insulating layer 7, and a third insulating layer 8. The first insulating layer 6 is disposed on one side of the cell assembly 2 away from the circuit board assembly 1 along the first direction X. There are two second insulating layers 7, which are respectively disposed on two sides of the cell assembly 2 along the second direction Y. The third insulating layer 8 is disposed between the flange structure 5 and the input terminal of the circuit board assembly 1.

[0065] In this embodiment, the electrical connections between the cell assembly 2, the flanged structure 5, and the circuit board assembly 1 are effectively isolated by the first insulating layer 6, the second insulating layer 7, and the third insulating layer 8, preventing safety hazards such as short circuits and electric shocks. This helps improve the safety and stability of the battery.

[0066] In one embodiment, such as Figure 8 As shown, it also includes a covering component 9, which includes a first covering segment 9001, a second covering segment 9002, and a third covering segment 9003. The first covering segment 9001 is disposed on one side of the cell assembly 2 along the third direction Z. The second covering segment 9002 and the third covering segment 9003 are respectively disposed on two sides of the cell assembly 2 along the second direction Y. At least a portion of the second covering segment 9002 and the third covering segment 9003 is located on the other side of the cell assembly 2 along the third direction Z. The first covering segment 9001, the second covering segment 9002, and the third covering segment 9003 are constructed as an integral structure.

[0067] It should be noted that the covering component 9 is designed as an easy-tear adhesive. This adhesive tightly wraps around the battery surface, providing effective fixation and preventing the battery from shifting or moving within the battery. The easy-tear adhesive's design allows users to easily peel it off the battery without damaging it or other parts of the battery. It also isolates the battery from direct contact with the external environment, reducing physical and chemical damage to the battery.

[0068] In this embodiment, the design of the covering component 9 provides all-around protection for the cell assembly 2, further enhancing the battery's waterproof, dustproof, and shockproof performance. This design makes the battery more suitable for harsh working environments, improves its reliability and durability, and also facilitates maintenance.

[0069] In one embodiment, such as Figure 4 As shown, it also includes a gasket 10, which is disposed between the circuit board assembly 1 and the sidewall of the sink 3001 along the first direction X, and the gasket 10 is disposed on the output end of the circuit board assembly 1.

[0070] Optionally, the gasket 10 can be a foam sheet.

[0071] In this embodiment, the gasket 10 can evenly distribute the stress on the circuit board assembly 1 during injection molding, reducing the risk of damage to the circuit board assembly 1. At the same time, the gasket 10 can also prevent direct contact between the circuit board assembly 1 and the sidewall of the sink 3001, reducing the possibility of friction and wear.

[0072] According to an embodiment of this application, another aspect provides an electrical device including the aforementioned battery.

[0073] Since electrical equipment includes batteries and has the same effect as batteries, it will not be elaborated further here.

[0074] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery having a first direction (X), a second direction (Y) and a third direction (Z) intersecting each other two by two, characterized in that, The application relates to a battery pack, which comprises: a circuit board assembly (1); a battery cell assembly (2) provided with a tab (2001), the battery cell assembly (2) and the circuit board assembly (1) being distributed along a first direction (X); a shell (3) provided with a sink (3001) on a side wall along a third direction (Z), the circuit board assembly (1) being located in the sink (3001), the sink (3001) being provided with a first through slot (3002) on a side wall along the first direction (X) towards the battery cell assembly (2), the tab (2001) penetrating through the first through slot (3002) and being connected with the circuit board assembly (1).

2. The battery of claim 1, wherein, A plurality of first limiting blocks (3004) are arranged on a side of the sink (3001) along the first direction (X) away from the battery cell assembly (2), the first limiting blocks (3004) being spaced apart along a second direction (Y), and the first limiting blocks (3004) being adapted to divide the sink (3001) into a plurality of accommodating grooves adapted to accommodate components of the circuit board assembly (1).

3. The battery of claim 2, wherein, A plurality of second limiting blocks (3005) are arranged in the first through slot (3002), the second limiting blocks (3005) being spaced apart along the second direction (Y), and the circuit board assembly (1) being arranged between the first limiting blocks (3004) and the second limiting blocks (3005).

4. The battery of claim 1, wherein, The application further comprises: an injection plastic (4) connected with a side wall of the battery cell assembly (2) along the first direction (X) towards the circuit board assembly (1), and the tab (2001), the circuit board assembly (1) and the shell (3) being arranged in the injection plastic (4).

5. The battery of claim 1, wherein, At least one side wall of the sink (3001) along the second direction (Y) is provided with a second through slot (3003), an output end of the circuit board assembly (1) penetrating through the second through slot (3003) and extending out of the shell (3).

6. The battery of claim 1, wherein, The application further comprises: a flange structure (5) having a first end connected with a side of the battery cell assembly (2) along the first direction (X) towards the circuit board, a second end of the flange structure (5) being folded towards the battery cell assembly (2) along the third direction (Z), a first end of the tab (2001) being connected with the second end of the flange structure (5), a second end of the tab (2001) being folded towards the battery cell assembly (2) along a direction away from the third direction (Z), and the second end of the tab (2001) penetrating through the first through slot (3002) and being connected with the circuit board assembly (1).

7. The battery of claim 6, wherein, The application further comprises: a first insulating layer (6) arranged on a side of the battery cell assembly (2) along the first direction (X) away from the circuit board assembly (1); and / or two second insulating layers (7) arranged on two sides of the battery cell assembly (2) along the second direction (Y); and / or a third insulating layer (8) arranged between the flange structure (5) and an input end of the circuit board assembly (1).

8. The battery of claim 7, wherein, The application further comprises: The cladding assembly (9) comprises a first cladding section (9001), a second cladding section (9002) and a third cladding section (9003), the first cladding section (9001) is arranged at one side of the battery cell assembly (2) along the third direction (Z), the second cladding section (9002) and the third cladding section (9003) are arranged at two sides of the battery cell assembly (2) along the second direction (Y) respectively, at least part of the second cladding section (9002) and the third cladding section (9003) are arranged at the other side of the battery cell assembly (2) along the third direction (Z), the first cladding section (9001), the second cladding section (9002) and the third cladding section (9003) are configured as an integrated structure.

9. The battery of claim 1, wherein, Also comprising: A gasket (10) is arranged between the circuit board assembly (1) and the side wall of the sink (3001) along the first direction (X), and the gasket (10) is arranged on the output end of the circuit board assembly (1).

10. An electric device, characterized by Comprising: The battery of any one of claims 1 to 9.

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