A battery cover structure

Abstract

This utility model relates to a battery cover structure provided in this embodiment, comprising: a top cover, two terminal post assemblies, and two sealing assemblies; the top cover has two spaced-apart mounting holes; the two terminal post assemblies are respectively installed in the two mounting holes, each terminal post assembly including an adapter piece, a fixing platform, and a riveting post, the adapter piece, fixing platform, and riveting post being stacked and pressed together to form an integral structure, the fixing platform being inserted into the mounting hole; the radial dimension of the riveting post is smaller than that of the fixing platform, so that a step is formed between the riveting post and the fixing platform; the two sealing assemblies are respectively disposed at the two mounting holes to seal the gap between the corresponding mounting hole and the terminal post assembly. The terminal post assembly of this utility model adopts an integral structure formed by stacking and pressing the adapter piece, fixing platform, and riveting post together, resulting in tight connections between the various parts of the terminal post assembly, a stable overall structure, higher structural strength, and effective reduction of internal resistance.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more specifically, to a battery cover structure. Background Technology

[0002] With the rapid development of electric vehicles, portable electronic devices, and other fields, the performance requirements for batteries are becoming increasingly stringent. As a crucial component of the battery, the battery cover not only protects the internal structure but also performs critical functions such as electrical connection and sealing. In existing battery cover structures, the terminals and adapter plates are separate components, welded together using laser welding. The weld slag produced by laser welding can easily fall into the battery cell, and poor laser welding, such as incomplete welds or misaligned welds, can lead to loosening or even detachment of the adapter plates and terminals, resulting in poor structural strength and reliability, and posing certain safety hazards. Furthermore, laser welding of the terminals and adapter plates increases internal resistance, affecting battery performance and increasing costs. Utility Model Content

[0003] In view of this, the present invention provides a battery cover structure with an integrated terminal post and adapter plate.

[0004] The objective of this utility model is achieved through the following technical solution: A battery cover structure, comprising: The top cover has two spaced-apart mounting holes. Two pole post assemblies are respectively installed in the two mounting holes. Each pole post assembly includes an adapter plate, a fixing platform, and a riveting post. The adapter plate, fixing platform, and riveting post are stacked and pressed together to form an integral structure. The fixing platform is inserted into the mounting hole. The radial dimension of the riveting post is smaller than that of the fixing platform, so that a step is formed between the riveting post and the fixing platform. Two sealing components are respectively disposed at the two mounting holes to seal the gap between the corresponding mounting holes and the pole assembly.

[0005] In the above technical solution, the electrode assembly adopts an integral structure formed by sequentially stacking and pressing the adapter plate, fixing platform and riveting post, so that the connection between the various parts of the electrode assembly is tight and the overall structure is stable. The electrode post and the adapter plate can be fixed without welding, which can effectively save manufacturing costs, has higher structural strength, and effectively reduce internal resistance, ensuring the normal operation of the battery and improving the reliability and service life of the battery.

[0006] Furthermore, by setting two sealing components to seal the gaps between the two mounting holes and the terminal assembly, electrolyte leakage and the entry of external moisture and impurities into the battery can be effectively prevented. This not only avoids battery performance degradation caused by electrolyte loss but also prevents safety issues such as internal short circuits caused by moisture and impurities, greatly improving battery safety and stability.

[0007] Optionally, in one possible implementation, the sealing assembly includes a sealing ring sleeved on the outer periphery of the fixed platform, a plastic gasket disposed on the top cover and surrounding the mounting hole, and a pressure block snapped onto the plastic gasket. The plastic gasket and the pressure block are respectively provided with a first through hole and a second through hole coaxial with the mounting hole, and the riveting post passes through the first through hole and the second through hole in sequence.

[0008] In the above technical solution, the sealing ring is fitted around the outer periphery of the fixing platform, which can tightly fit the fixing platform and the inner wall of the mounting hole, effectively preventing electrolyte leakage from the radial gap between the terminal assembly and the mounting hole, while also preventing external moisture and impurities from entering the battery through this gap. The plastic gasket acts as a buffer, reducing the impact of battery vibration on the sealing structure during use, further enhancing the stability of the seal. The pressure block presses and fixes the plastic gasket from above, ensuring tight contact between the plastic gasket and the top cover and terminal assembly, preventing the plastic gasket from shifting or loosening during use.

[0009] Alternatively, in one possible implementation, the sealing ring is located between the outer periphery of the fixing platform and the inner wall of the mounting hole.

[0010] In the above technical solution, the sealing ring is precisely positioned between the outer periphery of the fixing platform and the inner wall of the mounting hole. This allows the sealing ring to fully perform its sealing function, achieving precise sealing and effectively preventing the interaction of internal and external substances. It can also adapt to the thermal expansion and contraction of the battery, maintaining long-term sealing performance.

[0011] Optionally, in one possible implementation, the top cover includes a substrate and a plastic sheet stacked together, with the adapter piece attached to the plastic sheet.

[0012] In the above technical solution, the top cover's structural design balances electrical connection and insulation requirements. The substrate has excellent conductivity, providing a stable channel for current transmission within the battery, ensuring efficient current flow during normal charging and discharging, and reducing energy loss. The plastic sheet has excellent insulation properties; attaching the adapter plate to the plastic sheet effectively isolates the adapter plate from other potentially conductive components, preventing electrical faults such as short circuits.

[0013] Optionally, in one possible implementation, the adapter piece is an integrally bent structure, the adapter piece is bent to form a sealing part and a welding part, the fixing platform is located at the sealing part, and the sealing part is attached to the plastic plate.

[0014] In the above technical solution, the sealing part of the adapter plate is tightly fitted to the plastic plate and serves as the connection part between the pole and the fixing platform, which facilitates the installation of the pole and the fixing platform. The welding part of the adapter plate provides convenience for its connection with the battery cell tab, ensuring that the current can be stably transmitted to the pole.

[0015] Optionally, in one possible implementation, the plastic sheet has a positioning groove on the side away from the substrate, and the sealing part is located in the positioning groove.

[0016] In the above technical solution, the positioning groove provides a clear and precise installation position for the sealing part of the adapter plate. During the assembly process of the battery cover, operators can quickly and accurately place the sealing part into the positioning groove, greatly improving assembly efficiency.

[0017] Alternatively, in one possible implementation, the side of the plastic pad away from the top cover has a groove that matches the pressure block, and the pressure block is engaged in the groove.

[0018] In the above technical solution, the plastic pad has a groove that matches the pressure block, allowing the pressure block to be precisely locked in place. This precise installation method ensures that the relative position between the pressure block and the plastic pad is fixed, preventing the pressure block from shifting due to vibration, shaking, or other factors during battery use. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is an overall structural assembly drawing of one embodiment.

[0021] Figure 2 This is one of the exploded views of the overall structure of an embodiment.

[0022] Figure 3 This is the second exploded view of the overall structure of one embodiment.

[0023] Reference numerals: 1-Top cover; 11-Base plate; 12-Plastic plate; 121-Positioning groove; 122-Positioning block; 2-Pole post assembly; 21-Adapter piece; 211-Sealing part; 212-Welding part; 22-Fixing platform; 23-Riveting post; 3-Sealing assembly; 31-Sealing ring; 32-Plastic gasket; 321-First through hole; 322-Groove; 33-Pressure plate; 331-Second through hole. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] Please refer to Figures 1-3 .

[0027] This embodiment provides a battery cover structure, including: a top cover 1, two terminal post assemblies 2, and two sealing assemblies 3; the top cover 1 has two spaced-apart mounting holes; the two terminal post assemblies 2 are respectively installed in the two mounting holes, each terminal post assembly 2 includes an adapter piece 21, a fixing platform 22, and a riveting post 23, the adapter piece 21, the fixing platform 22, and the riveting post 23 are stacked and pressed together to form an integral structure, the fixing platform 22 is inserted into the mounting hole; the radial dimension of the riveting post 23 is smaller than that of the fixing platform 22, so that a step is formed between the riveting post 23 and the fixing platform 22; the two sealing assemblies 3 are respectively disposed at the two mounting holes to seal the gap between the corresponding mounting holes and the terminal post assemblies 2.

[0028] The terminal assembly 2 adopts an integral structure formed by sequentially stacking and pressing the adapter plate 21, the fixing platform 22 and the riveting post 23. This makes the connection between the various parts of the terminal assembly 2 tight and the overall structure stable. The terminal post and the adapter plate 21 can be fixed without welding, which can effectively save manufacturing costs, has higher structural strength, and effectively reduce internal resistance, ensuring the normal operation of the battery and improving the reliability and service life of the battery.

[0029] Furthermore, by setting two sealing components 3 to seal the gaps between the two mounting holes and the terminal assembly 2 respectively, electrolyte leakage inside the battery and the entry of external moisture and impurities into the battery can be effectively prevented. This not only avoids battery performance degradation caused by electrolyte loss, but also prevents safety issues such as internal short circuits caused by moisture and impurities entering the battery, greatly improving the safety and stability of the battery.

[0030] It should be noted that the adapter plate 21 in this embodiment is provided with a first connecting groove that matches the fixing platform 22, and the fixing platform 22 is provided with a second connecting groove that matches the riveting post 23. When assembling the pole post assembly 2, the fixing platform 22 is placed in the first connecting groove, the riveting post 23 is placed in the second connecting groove, and then the assembly is pressed into an integral structure by a mold. In this way, the three parts can be fixed together without laser welding.

[0031] In this embodiment, the sealing assembly 3 includes a sealing ring 31 sleeved on the outer periphery of the fixed platform 22, a plastic pad 32 disposed on the top cover 1 and surrounding the mounting hole, and a pressure block 33 snapped onto the plastic pad 32. The plastic pad 32 and the pressure block 33 are respectively provided with a first through hole 321 and a second through hole 331 coaxial with the mounting hole. The riveting post 23 passes through the first through hole 321 and the second through hole 331 in sequence.

[0032] The sealing ring 31 is fitted around the outer periphery of the fixing platform 22, which can fit tightly against the fixing platform 22 and the inner wall of the mounting hole, effectively preventing electrolyte leakage from the radial gap between the electrode assembly 2 and the mounting hole, while preventing external moisture and impurities from entering the battery through the gap.

[0033] The plastic pad 32 acts as a buffer. Made of a soft and elastic material, such as plastic, the plastic pad 32 can fill the small unevenness between the surface of the top cover 1 and the terminal assembly 2, forming a reliable sealing barrier. In addition, the plastic pad 32 can act as a buffer, reducing the impact of vibration on the sealing structure during battery use and further enhancing the stability of the seal.

[0034] The pressure block 33 presses and secures the plastic pad 32 from above, ensuring tight contact between the plastic pad 32 and the top cover 1 and the terminal assembly 2, preventing the plastic pad 32 from shifting or loosening during use. The multiple sealing structures of the sealing ring 31, plastic pad 32, and pressure block 33 work together to provide layer-by-layer protection, greatly improving the sealing performance of the battery cover, effectively preventing electrolyte leakage and the intrusion of external foreign objects, and ensuring the safety and reliability of the battery.

[0035] It should be noted that the sealing ring 31 is located between the outer periphery of the fixing platform 22 and the inner wall of the mounting hole. The precise positioning of the sealing ring 31 between the outer periphery of the fixing platform 22 and the inner wall of the mounting hole allows it to fully perform its sealing function, achieving a precise seal and effectively preventing the interaction of internal and external substances. It also accommodates the thermal expansion and contraction of the battery, maintaining long-term sealing performance.

[0036] In this embodiment, the top cover 1 includes a substrate 11 and a plastic plate 12 stacked together, and an adapter piece 21 is attached to the plastic plate 12. The substrate 11 and the plastic plate 12 can be fixed by adhesive bonding or heat fusion, and the stacked substrate 11 and plastic plate 12 structure provides stronger structural support for the entire battery cover.

[0037] The top cover 1 is designed to balance electrical connectivity and insulation requirements. The substrate 11 has excellent conductivity, providing a stable current path for the battery's internal current transmission, ensuring efficient current flow during normal charging and discharging, and reducing energy loss. The plastic plate 12 has excellent insulation properties; attaching the adapter piece 21 to the plastic plate 12 effectively isolates the adapter piece 21 from other potentially conductive components, preventing electrical faults such as short circuits.

[0038] In this embodiment, the adapter piece 21 is an integral bending structure. The adapter piece 21 is bent to form a sealing part 211 and a welding part 212. The fixing platform 22 is located in the sealing part 211, and the sealing part 211 is attached to the plastic plate 12.

[0039] The sealing part 211 of the adapter piece 21 fits tightly against the plastic plate 12 and serves as the connection part between the pole and the fixing platform 22, which facilitates the installation of the pole and the fixing platform 22. The welding part 212 of the adapter piece 21 provides convenience for its connection with the battery cell tab, ensuring that the current can be stably transmitted to the pole.

[0040] In this embodiment, a positioning groove 121 is provided on the side of the plastic plate 12 away from the substrate 11, and the sealing part 211 is located in the positioning groove 121. In this embodiment, the size of the positioning groove 121 is larger than the size of the sealing part 211, and multiple positioning blocks 122 are provided on the edge of the positioning groove 121. The sealing part 211 is engaged between the multiple positioning blocks 122, which can ensure the accurate positioning of the sealing part 211 while facilitating the installation of the sealing part 211.

[0041] The positioning groove 121 provides a clear and precise installation position for the sealing part 211 of the adapter piece 21. During the assembly of the battery cover, the operator can quickly and accurately place the sealing part 211 into the positioning groove 121, greatly improving assembly efficiency. Precise positioning also ensures a tight and uniform fit between the sealing part 211 and the plastic plate 12, avoiding sealing problems caused by installation deviations.

[0042] In this embodiment, the side of the plastic pad 32 away from the top cover 1 is provided with a groove 322 that matches the pressure block 33, and the pressure block 33 is engaged in the groove 322. Specifically, the fit between the pressure block 33 and the groove 322 is an interference fit.

[0043] The plastic pad 32 has a groove 322 that matches the pressure block 33, allowing the pressure block 33 to be precisely locked in place. This precise installation method ensures that the relative position between the pressure block 33 and the plastic pad 32 is fixed, preventing the pressure block 33 from shifting due to vibration, shaking, or other factors during battery use.

[0044] 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.

[0045] 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.

[0046] 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 cover plate structure, characterized by, include: The top cover has two spaced-apart mounting holes. Two pole post assemblies are respectively installed in the two mounting holes. Each pole post assembly includes an adapter plate, a fixing platform, and a riveting post. The adapter plate, fixing platform, and riveting post are stacked and pressed together to form an integral structure. The fixing platform is inserted into the mounting hole. The radial dimension of the riveting post is smaller than that of the fixing platform, so that a step is formed between the riveting post and the fixing platform. Two sealing components are respectively disposed at the two mounting holes to seal the gap between the corresponding mounting holes and the pole assembly.

2. The battery cover plate structure according to claim 1, characterized by, The sealing assembly includes a sealing ring sleeved on the outer periphery of the fixed platform, a plastic gasket disposed on the top cover and surrounding the mounting hole, and a pressure block snapped onto the plastic gasket. The plastic gasket and the pressure block are respectively provided with a first through hole and a second through hole coaxial with the mounting hole, and the riveting post passes through the first through hole and the second through hole in sequence.

3. The battery cover plate structure of claim 2, wherein, The sealing ring is located between the outer periphery of the fixed platform and the inner wall of the mounting hole.

4. The battery cover plate structure of claim 1, wherein, The top cover includes a substrate and a plastic sheet stacked together, and the adapter piece is attached to the plastic sheet.

5. The battery cover plate structure of claim 4, wherein, The adapter piece is an integral bending structure. The adapter piece is bent to form a sealing part and a welding part. The fixing platform is located in the sealing part, and the sealing part is attached to the plastic plate.

6. The battery cover structure according to claim 5, characterized in that, The plastic sheet has a positioning groove on the side away from the substrate, and the sealing part is located in the positioning groove.

7. The battery cover plate structure of claim 2, wherein The plastic pad has a groove on the side away from the top cover that matches the pressure block, and the pressure block is engaged in the groove.

Images