Battery cell structure with protection and fool-proof structure

Abstract

The utility model relates to a battery cell structure with a protection and fool-proof structure, which comprises a battery cell with an end part provided with a tab, one end of the battery cell provided with the tab is provided with a mounting plate, the mounting plate is provided with a circuit board, the circuit board is electrically connected with the tab through an internal flat cable, the periphery of the circuit board is sleeved with a protection bracket, and the protection bracket is provided with a protective cover. The protection support is placed on the installation plate and located on one side of the electrode lug, the protection support is provided with a through notch, fool-proof clamping blocks are arranged at the two ends of the notch, and the circuit board is arranged in the notch and located between the two fool-proof clamping blocks. According to the utility model, the protection support arranged at the periphery of the circuit board can isolate the circuit board in an independent space and limit the positions of the circuit board and components on the circuit board, so that the stability of the circuit board is ensured, the influence of vibration on the circuit board is reduced, and the damage to the circuit board caused by external factors is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery cells, and more specifically, to a battery cell structure with a protective and foolproof structure. Background Technology

[0002] Battery cells typically require circuit boards and wiring. However, as battery cells become increasingly thinner, the installation method between the circuit board and the cell becomes more challenging. Currently, circuit boards are mostly fixed to the tabs of the battery cell using a mounting plate, with adhesive used to bond the mounting plate to both the cell and the circuit board. In actual use, it has been found that circuit boards contain numerous components, and battery cells are used in various scenarios. When battery cells are used in environments that generate vibration or bumps, components can easily detach, or the connection between the cell and the circuit board may be broken or short-circuited, affecting safety and performance. Utility Model Content

[0003] In view of this, the present invention provides a battery cell structure with a protective and foolproof structure that protects the circuit board and improves the connection stability between the battery cell and the circuit board.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A battery cell structure with protection and error prevention features includes a battery cell with tabs at one end. A mounting plate is provided at one end of the battery cell with the tabs. A circuit board is provided on the mounting plate. The circuit board is electrically connected to the tabs via an internal wiring harness. A protective bracket is fitted around the outer periphery of the circuit board. The protective bracket is placed on the mounting plate and located on one side of the tabs. The protective bracket has a through slot. Error prevention blocks are provided at both ends of the slot. The circuit board is disposed within the slot and located between the two error prevention blocks.

[0006] In the above technical solution, the protective bracket installed around the circuit board isolates the circuit board in an independent space and restricts the position of the circuit board and its components, thereby ensuring the stability of the circuit board, reducing the impact of vibration, and preventing damage from external factors. It also effectively improves the overall structural strength of the battery cell. The protective bracket features a through slot with anti-misalignment blocks at both ends. This allows for a specific assembly method between the protective bracket and the circuit board during installation, preventing incorrect installation and better protecting the circuit board. Furthermore, the limiting relationship between the protective bracket and the circuit board effectively prevents bracket misalignment.

[0007] Optionally, in one possible implementation, the protective bracket includes a first baffle and a second baffle arranged in parallel and spaced apart, and a plurality of connecting plates for connecting the first baffle and the second baffle, wherein the slot is formed between the first baffle and the second baffle, and both of the anti-foolproof blocks are disposed on the first baffle.

[0008] In the above technical solution, the first baffle and the second baffle are located on opposite sides of the circuit board, and the parallel arrangement of the first baffle and the second baffle can maximize the slot, so that the circuit board can be placed completely in the slot more easily. The two anti-foolproof blocks are both set in the first baffle, which is to facilitate the installation between the protection bracket and the circuit board and ensure that the protection bracket can enter from the end of the slot and be sleeved on the circuit board.

[0009] Optionally, in one possible implementation, the second baffle is provided with a support block, which is opposite to the tab.

[0010] In the above technical solution, the design of the support block can provide stable support for the internal ribbon cable. That is, the tab is connected to the circuit board through the internal ribbon cable, and the support block can support and limit the end of the internal ribbon cable that is plugged into the circuit board. In other words, it can further limit the displacement of the internal ribbon cable terminal, thereby preventing it from detaching from the circuit board and causing a disconnection.

[0011] Alternatively, in one possible implementation, the tabs are two spaced apart, and the support blocks are two corresponding to the two tabs.

[0012] In the above technical solution, the two tabs correspond to the positive and negative terminals of the battery cell, respectively. At the same time, the two tabs are spaced apart and, together with two corresponding support blocks, can ensure that the battery cell is subjected to uniform force during charging and discharging, avoiding damage caused by excessive local stress.

[0013] Optionally, in one possible implementation, a wire threading port is provided between the foolproof card block and the second baffle.

[0014] In the above technical solution, the design of the wiring port is to facilitate the layout of the circuit and improve the aesthetics. On the other hand, since the protection bracket is a post-installed structure, that is, the circuit board is first fixed on the mounting plate and then the protection bracket is installed on the outer periphery of the circuit board, the wiring port is also to ensure the effective installation of the protection bracket, that is, the protection bracket is sleeved onto the circuit board from the wiring port.

[0015] Optionally, in one possible implementation, the circuit board is further provided with two external ribbon cables, which extend from the two wire-through ports to the outside of the slot.

[0016] In the above technical solution, the external ribbon cable connects directly to the circuit board through the wiring port, eliminating the need for additional wiring arrangement or fixing steps, thus greatly simplifying the assembly process. Furthermore, the direct extension of the external ribbon cable from the wiring port ensures a tighter and more secure connection with the circuit board, reducing faults caused by loose wiring or poor connections and improving the overall connection stability of the battery cell protection structure.

[0017] Optionally, in one possible implementation, the end of the battery cell with the tab is further provided with a protective cover, which covers the aluminum-plastic film seal of the battery cell.

[0018] In the above technical solution, the protective cover design provides additional protection for the aluminum-plastic film sealing edge of the battery cell, and also isolates the aluminum-plastic film sealing edge, preventing damage to the battery cell caused by external impact, wear or chemical corrosion, or damage to other components on the battery cell caused by the aluminum-plastic film sealing edge, thereby improving the safety performance of the battery cell.

[0019] Optionally, in one possible implementation, the protective cover has a "U" shaped structure, and the bottom of the protective cover is provided with a slot, in which the aluminum-plastic film sealing edge of the battery cell is placed.

[0020] In the aforementioned technical solution, the combination of the "U"-shaped protective cover and the slot design ensures that the aluminum-plastic film sealing edge of the battery cell is accurately positioned and fixed within the slot, improving the accuracy and stability of battery cell installation and reducing safety hazards caused by loosening or displacement of the battery cell. Furthermore, the slot design allows the protective cover to easily slide into or out of the aluminum-plastic film sealing edge of the battery cell, thus simplifying the installation and disassembly process.

[0021] Alternatively, in one possible implementation, the protective cover is provided with a clearance notch, which corresponds to the electrode tab.

[0022] In the above technical solution, the design of the clearance notch ensures that the tab is not obstructed by the protective cover when connecting to external circuits, so that the tab can be easily and accurately connected to the circuit board, improving the reliability and stability of the connection. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of one embodiment.

[0025] Figure 2 This is a schematic diagram of the structure of a protective bracket according to one embodiment.

[0026] Figure 3 for Figure 1 Enlarged view of part A in the middle.

[0027] Figure 4 This is a schematic diagram of the structure of a battery cell in one embodiment.

[0028] Figure 5 This is a schematic diagram of the structure of a protective cover according to one embodiment.

[0029] Reference numerals in the attached diagram: 1-Battery cell; 11-Electrode tab; 12-Internal wiring harness; 2-Mounting plate; 3-Circuit board; 4-Protective bracket; 41-First baffle; 42-Second baffle; 43-Connecting plate; 44-Slot; 45-Anti-foolproof clip; 46-Support block; 47-Wire threading port; 5-External wiring harness; 6-Protective cover; 61-Card slot; 62-Avoidance notch. Detailed Implementation

[0030] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] Please refer to Figures 1-3 This embodiment provides a battery cell structure with protection and foolproof features, including a battery cell 1 with tabs 11 at one end. A mounting plate 2 is provided at one end of the battery cell 1 with tabs 11. A circuit board 3 is mounted on the mounting plate 2. The circuit board 3 is electrically connected to the tabs 11 via an internal cable 12. A protective bracket 4 is fitted around the outer periphery of the circuit board 3. The protective bracket 4 is placed on the mounting plate 2 and located on one side of the tabs 11. The protective bracket 4 has a through slot 44, and foolproof locking blocks 45 are provided at both ends of the slot 44. The circuit board 3 is located within the slot 44 and between the two foolproof locking blocks 45. Specifically, the battery cell 1 has a rectangular structure, with the tabs 11 located on one of the width sides of the battery cell 1. The mounting plate 2 is glued to the battery cell 1 and located beside the tabs 11. The circuit board 3 is perpendicular to the mounting plate 2, and the protective bracket 4 can completely wrap around the outer periphery of the circuit board 3.

[0033] In this embodiment, the protective bracket 4 installed around the circuit board 3 isolates the circuit board 3 in an independent space and restricts the position of the circuit board 3 and the components located on it, thereby ensuring the stability of the circuit board 3, reducing the impact of vibration on the circuit board 3, and avoiding damage to the circuit board 3 caused by external factors. At the same time, it can also effectively improve the overall structural strength of the battery cell 1. The protective bracket 4 is designed with a through slot 44, and anti-misalignment blocks 45 are set at both ends of the slot 44. This allows the protective bracket 4 to have a specific assembly method with the circuit board 3 during installation, which can not only avoid incorrect installation of the protective bracket 4, but also better protect the circuit board 3. Moreover, the protective bracket 4 and the circuit board 3 form a limiting relationship, which can effectively prevent the protective bracket 4 from shifting.

[0034] It should be noted that, to facilitate the welding and assembly of the battery cell 1, the protective bracket 4 in this embodiment is a post-installed structure. That is, the mounting plate 2 and the circuit board 3 are first installed on the battery cell 1, and then the protective bracket 4 is installed. Specifically, since the protective bracket 4 has a through slot 44, which extends along the length of the protective bracket 4, making the opposite ends of the slot 44 open, the protective bracket 4 can be snapped into the side of the circuit board 3 to wrap around the outer periphery of the circuit board 3. The thickness of the anti-foolproof block 45 should be set to ensure that it does not affect the passage of the circuit board 3.

[0035] In this embodiment, the protective bracket 4 includes a first baffle 41 and a second baffle 42 arranged in parallel and spaced apart, and a plurality of connecting plates 43 for connecting the first baffle 41 and the second baffle 42. A slot 44 is formed between the first baffle 41 and the second baffle 42, and two anti-foolproof blocks 45 are both provided on the first baffle 41.

[0036] The first baffle 41 and the second baffle 42 are located on opposite sides of the circuit board 3, and the parallel arrangement of the first baffle 41 and the second baffle 42 can maximize the slot 44, making it easier to place the circuit board 3 completely into the slot 44. The two anti-foolproof blocks 45 are both set in the first baffle 41 to facilitate the installation between the protection bracket 4 and the circuit board 3, ensuring that the protection bracket 4 can enter from the end of the slot 44 and be sleeved on the circuit board 3.

[0037] In this embodiment, the second baffle 42 is provided with a support block 46, which is opposite to the tab 11. Specifically, the support block 46 can be a single piece or a plurality of spaced-apart ribs, which can also improve the strength of the second baffle 42. In addition, there are two tabs 11 spaced apart, and two support blocks 46 corresponding to the two tabs 11.

[0038] The support block 46 is designed to provide stable support for the internal ribbon cable 12. Since the tab 11 is connected to the circuit board 3 via the internal ribbon cable 12, the support block 46 supports and limits the end of the internal ribbon cable 12 that is inserted into the circuit board 3. This further restricts the displacement of the internal ribbon cable 12's terminal, preventing it from detaching from the circuit board 3 and causing a break in connection. More specifically, the distance between the support block 46 and the ribbon cable interface on the circuit board 3 corresponds to the terminal of the internal ribbon cable 12 and can be slightly greater than the thickness of that terminal. Furthermore, the two tabs 11 correspond to the positive and negative terminals of the battery cell 1, respectively. The two tabs 11 are spaced apart, and together with the two corresponding support blocks 46, this ensures that the battery cell 1 experiences uniform stress during charging and discharging, preventing damage caused by excessive local stress.

[0039] In this embodiment, a wire-passing opening 47 is provided between the anti-foolproof clip 45 and the second baffle 42. The design of the wire-passing opening 47 is to facilitate the layout of the circuit and improve the aesthetics. On the other hand, since the protective bracket 4 is a post-installed structure, that is, the circuit board 3 is first fixed on the mounting plate 2, and then the protective bracket 4 is installed on the outer periphery of the circuit board 3, the wire-passing opening 47 is also to ensure the effective installation of the protective bracket 4, that is, the protective bracket 4 is sleeved on the circuit board 3 through the wire-passing opening 47.

[0040] In this embodiment, the circuit board 3 is also provided with two external ribbon cables 5, which extend from two through-holes 47 to the outside of the slot 44. The external ribbon cables 5 are directly connected to the circuit board 3 through the through-holes 47, eliminating the need for additional wiring or fixing steps, thus greatly simplifying the assembly process. In addition, the direct extension of the external ribbon cables 5 from the through-holes 47 results in a tighter and more secure connection with the circuit board 3, reducing faults caused by loose wiring or poor connections, and improving the connection stability of the entire cell 1 protection structure.

[0041] It should be noted that the external ribbon cable 5 is attached to the surface of the circuit board 3. Therefore, the total thickness of the two is the factor that needs to be considered when designing the width of the cable entry 47. In other words, the width of the cable entry 47 should be greater than the total thickness of the external ribbon cable 5 and the circuit board 3. The cable should be inserted from the end of the circuit board 3 through the cable entry 47 on the protective bracket 4 until the circuit board 3 is completely placed in the slot 44. Then, the protective bracket 4 should be pushed to place the circuit board 3 between the two anti-foolproof blocks 45.

[0042] Please refer to Figure 1 and Figure 4In this embodiment, the end of the battery cell 1 with the tab 11 is also provided with a protective cover 6, which covers the aluminum-plastic film sealing edge of the battery cell 1. Specifically, the outer periphery of the battery cell 1 is usually wrapped with an aluminum-plastic film. After vacuuming, the aluminum-plastic film needs to be sealed. After sealing, there are three folded edges. The folded edges on both sides of the battery cell 1 can be directly bent and attached to the side of the battery cell 1. However, the folded edge at the top of the battery cell 1 is not convenient to bend because it is also wrapped with the tab 11. The problem of folding edges can be effectively solved by adding the protective cover 6.

[0043] The protective cover 6 provides additional protection for the aluminum-plastic film sealing edge of the battery cell 1, and also isolates the aluminum-plastic film sealing edge, preventing damage to the battery cell 1 caused by external impact, wear or chemical corrosion, or damage to other components on the battery cell 1 caused by the aluminum-plastic film sealing edge, thereby improving the safety performance of the battery cell 1.

[0044] Please refer to Figure 5 In this embodiment, the protective cover 6 has a "U"-shaped structure, and a slot 61 is provided at the bottom of the protective cover 6. The aluminum-plastic film seal of the battery cell 1 is placed in the slot 61. The combination of the "U"-shaped structure of the protective cover 6 and the slot 61 design ensures that the aluminum-plastic film seal of the battery cell 1 is accurately positioned and fixed in the slot 61, improving the accuracy and stability of the battery cell 1 installation and reducing safety hazards caused by loosening or displacement of the battery cell 1. Furthermore, the design of the slot 61 allows the protective cover 6 to easily slide into or out of the aluminum-plastic film seal of the battery cell 1, thereby simplifying its installation and disassembly process.

[0045] In this embodiment, the protective cover 6 is provided with a clearance notch 62, which corresponds to the tab 11. The design of the clearance notch 62 ensures that the tab 11 is not obstructed by the protective cover 6 when connecting to external circuits, so that the tab 11 can be easily and accurately connected to the circuit board 3, improving the reliability and stability of the connection.

[0046] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery cell structure having a protection and fool-proof structure, comprising a battery cell having a tab provided at an end portion, characterized in that, The electric core is provided with an installation plate at one end of the tab, the installation plate is provided with a circuit board, the circuit board is electrically connected with the tab through an inner connecting wire, the circuit board is provided with a protective support outside, the protective support is placed on the installation plate and located at one side of the tab, the protective support is provided with a through slot, both ends of the slot are provided with fool-proof blocks, the circuit board is located in the slot and between the two fool-proof blocks; the protective support comprises a first baffle and a second baffle which are arranged in parallel and are spaced apart, and a plurality of connecting plates for connecting the first baffle and the second baffle, the slot is formed between the first baffle and the second baffle, and the two fool-proof blocks are arranged on the first baffle.

2. The battery cell structure with protection and fool-proof structure according to claim 1, wherein, The second baffle is provided with a support block, and the support block is opposite to the tab.

3. The battery cell structure with protection and fool-proof structure according to claim 2, characterized in that, The tabs are arranged in two, and the support blocks are two corresponding to the two tabs.

4. The battery cell structure with protection and fool-proof structure according to claim 1, wherein, The fool-proof blocks are provided with threading holes between the second baffle.

5. The battery cell structure with protection and fool-proof structure according to claim 4, wherein, The circuit board is further provided with two external wires, and the two external wires respectively extend out of the slot from the two threading holes.

6. The battery cell structure with protection and fool-proof structure according to claim 1, wherein, The electric core is further provided with a protective cover at one end of the tab, and the protective cover covers the aluminum-plastic film sealing edge of the electric core.

7. The battery cell structure with protection and fool-proof structure according to claim 6, wherein, The protective cover is a "U" type structure, the bottom of the protective cover is provided with a clamping groove, and the aluminum-plastic film sealing edge of the electric core is arranged in the clamping groove.

8. The battery cell structure with protection and fool-proof structure according to claim 7, characterized in that, The protective cover is provided with a position avoiding gap, and the position avoiding gap corresponds to the tab. The protective cover is a "U" type structure, the bottom of the protective cover is provided with a clamping groove, and the aluminum-plastic film sealing edge of the electric core is arranged in the clamping groove. The protective cover is provided with a position avoiding gap, and the position avoiding gap corresponds to the tab.

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