Lithium battery with assembly easy to disassemble

By adopting a snap-fit ​​structure design, rapid disassembly and assembly of lithium batteries are achieved, solving the problem of slow disassembly speed in existing technologies, reducing costs and improving ease of use and safety.

CN224123420UActive Publication Date: 2026-04-14WENZHOU SANJIN BATTERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU SANJIN BATTERY CO LTD
Filing Date
2025-04-30
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

The existing lithium battery structure design makes it difficult to disassemble the cover and casing flexibly, resulting in slow disassembly speed, reduced disassembly efficiency, and increased costs.

Method used

It adopts a flexible detachable snap-fit ​​structure design, using a snap-fit ​​method to assemble the lithium battery casing and cover plate, and achieves quick disassembly and assembly through components such as slots, pins, and springs.

Benefits of technology

It improves the disassembly speed and efficiency of lithium batteries, reduces disassembly costs, and allows disassembled components to be reused, providing greater ease of use and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The lithium battery comprises two end covers which are distributed up and down, a shell is arranged between the two end covers, the two ends of the shell are inserted into the two end covers respectively, a first clamping groove matched with the shell is formed in the side, facing the shell, of each end cover, and a second clamping groove matched with the shell is formed in the side, facing the shell, of each end cover. Clamping blocks are fixedly connected to the bottoms of the two sides of an inner cavity of the shell, sliding grooves are formed in the tops of the clamping blocks, clamping pins are installed in inner cavities of the sliding grooves in a sliding mode, and springs are fixedly connected to the bottoms of the clamping pins. The shell and the cover plate of the lithium battery are assembled together in a buckling manner, the end cover can be quickly separated from the shell to finish the disassembly structure when the battery is disassembled, the disassembly speed and efficiency of the lithium battery are improved, and the disassembled parts can be secondarily assembled and used, so that the cost input is reduced, and convenience is provided for the use of a user.
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Description

Technical Field

[0001] This utility model relates to the field of lithium battery disassembly and assembly technology, and in particular to a lithium battery with easily detachable components. Background Technology

[0002] Lithium-ion batteries are batteries that use lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. The structural design of lithium-ion batteries is assembled by encapsulation, meaning that the top cover is embedded in the outer casing. They are assembled by die casting or other methods, which makes it difficult to disassemble the cover and casing of lithium-ion batteries. To disassemble the battery, the battery structure needs to be damaged from the outside in, which slows down the disassembly speed and reduces the efficiency of battery disassembly. This also means that the battery cannot be reused and increases the cost of disassembling and maintaining the battery.

[0003] To address the aforementioned problems, this utility model provides improvements. Summary of the Invention

[0004] This invention proposes a lithium battery with easily detachable components, which solves the aforementioned problems existing in the use of the prior art.

[0005] The technical solution of this utility model is implemented as follows: A lithium battery with easily detachable components includes two end caps distributed vertically, a housing disposed between the two end caps, and two ends of the housing respectively inserted into the two end caps. The end caps have a slot 1 adapted to the housing on the side facing the housing. The bottom of both sides of the inner cavity of the housing are fixedly connected to a locking block. The top of the locking block has a sliding groove. A locking pin is slidably installed in the inner cavity of the sliding groove. A spring is fixedly connected to the bottom of the locking pin. The end of the spring away from the locking pin is fixedly connected to the inner wall of the sliding groove. The top of the end caps has a slot 2 adapted to the locking block. The top of the inner cavity of the slot 2 has evenly distributed insertion holes adapted to the locking pin.

[0006] The present invention provides a lithium battery with easily detachable components as described above, further comprising: a protective shell fitted on the outer side of the housing, and protective covers fastened to the top and bottom of the protective shell, the protective covers being located outside the end caps.

[0007] The present invention further comprises, as described above, a lithium battery with easily detachable components, wherein a pin is provided through the two end caps, and a plurality of coils located inside the housing are wound on the surface of the pin, the coils being located between the two end caps.

[0008] The present invention further comprises the following for a lithium battery with easily detachable components as described above: a sleeve is fixedly connected to the surface of the protective shell, a slot is provided on one side of the top of the sleeve, and a plug adapted to the slot is fixedly connected to one side of the sleeve.

[0009] The present invention, as described above, is for a lithium battery with easily detachable components. Further, the top and bottom of the inner cavity of the protective shell are integrally formed with retaining rings, which are located on the outside of the protective cover.

[0010] The present invention provides a lithium battery with easily detachable components as described above, further comprising: one side of both the end cap and the protective cap having a through hole adapted to the pin.

[0011] The present invention further comprises, as described above, a lithium battery with easily detachable components, wherein an opening adapted to the card block is provided on one side of the top of the inner cavity of the card slot two.

[0012] In summary, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adopts a flexible disassembly and snap-fit ​​structure design. The lithium battery shell and the cover are assembled together by snap-fit. When disassembling the battery, the end cap can be twisted to quickly separate it from the shell and complete the disassembly structure, which improves the disassembly speed and efficiency of lithium batteries. Moreover, the disassembled parts can be reassembled and reused, reducing cost investment and providing convenience for users.

[0014] 2. This utility model features a protective cover and a protective shell. The protective shell is placed on the outside of the housing to protect the battery, and the protective cover is used in conjunction with the protective shell to improve the safety of lithium battery use.

[0015] 3. This utility model uses a pin and a coil, both of which are important internal components of the battery, used to store and release electrical energy. The two ends of the pin are the positive and negative terminals of the battery, respectively. It should be noted that the specific details of the battery's internal structure can be found in the structure of other lithium batteries on the market.

[0016] 4. This utility model uses a clamp, a slot, and a plug to provide more options for users by using the clamp, a slot, and a plug. The clamp is fixed to the surface of the protective shell, and the plug can be inserted into the slot.

[0017] 5. This utility model features a retaining ring made of elastic rubber material, which serves both as a seal and as a positioning element for the protective cover, without affecting disassembly and thus providing convenience for users.

[0018] 6. This utility model features a through hole for inserting a pin, allowing the end cap to be snapped onto the housing without being obstructed by the pin. It should be noted that the two ends of the pin are the positive and negative terminals of the battery, ensuring the normal operation of the lithium battery. The through hole on the protective cover is the same.

[0019] 7. This utility model features an opening for inserting a locking block. When assembling the end cap and the housing, the locking block inside the housing passes through the opening and engages in the second locking slot, thus guiding and limiting the assembly of the end cap and the housing, providing convenience for the user's assembly work. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a three-dimensional sectional view of the present invention;

[0023] Figure 3 This is a three-dimensional sectional view of the shell structure;

[0024] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of the partial three-dimensional structure of A in the middle;

[0026] Figure 6 This is an exploded three-dimensional structural diagram of the present invention.

[0027] In the diagram: 1. End cap, 2. Slot 1, 3. Housing, 4. Block, 5. Slide groove, 6. Pin, 7. Spring, 8. Slot 2, 9. Insertion hole, 10. Protective shell, 11. Protective cover, 12. Pin, 13. Coil, 14. Hoop, 15. Slot, 16. Insertion block, 17. Retaining ring, 18. Through hole. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0029] A lithium battery with easily detachable components includes two end caps 1 distributed vertically, with a housing 3 disposed between the two end caps 1. The two ends of the housing 3 are respectively inserted into the two end caps 1. The end cap 1 has a slot 2 adapted to the housing 3 on the side facing the housing 3. The bottom of both sides of the inner cavity of the housing 3 is fixedly connected to a block 4. The top of the block 4 has a groove 5. The inner cavity of the groove 5 is slidably fitted with a pin 6. The bottom of the pin 6 is fixedly connected to a spring 7. The end of the spring 7 away from the pin 6 is fixedly connected to the inner wall of the groove 5. The top of the end cap 1 has a slot 8 adapted to the block 4 on both sides. The top of the inner cavity of the slot 8 has evenly distributed insertion holes 9 adapted to the pin 6.

[0030] The specific usage process is as follows: During disassembly, first remove the outer protective shell 10 and protective cover 11 in sequence. Then rotate the end cover 1. It should be noted that the order of the upper and lower end covers 1 is arbitrary. Hold the shell 3 with one hand and rotate the end cover 1 with the other. The locking block 4, originally stuck in the slot 8, will move along with the shell 3 to the opening of the slot 8. Then, remove the end cover 1 outwards from the shell 3. As the locking block 4 moves within the slot 8, the locking pin 6 will move out of the current insertion hole 9. During this movement, the locking pin 6 will be squeezed by the inner wall of the slot 8 and move into the inner cavity of the slide groove 5, simultaneously compressing the spring 7. Thus, the end cover 1 can be removed from the shell 3. At the same time, other battery components located inside the shell 3 can also be removed from the shell 3 for repair. Regarding the disassembly process, it should be noted that the other end cap 1 is disassembled in the same way. It should also be noted that the protective cover 11 is directly snapped into the protective shell 10; therefore, during disassembly, simply pry the protective cover 11 out of the protective shell 10. The entire disassembly process is quick and easy, saving battery disassembly time and improving efficiency, providing convenience and assistance for users' disassembly work. During installation, insert the end of the shell 3 into the slot 2, aligning the locking block 4 on the shell 3 with the slot 8. Then rotate the end cap 1 while keeping the shell 3 stationary. The locking block 4 will then engage with the inner cavity of the slot 8. During this process, the locking pin 6 will be squeezed into the slide groove 5 by the inner wall of the slot 8, simultaneously compressing the spring 7 until the locking pin 6 engages with the corresponding position. After the sockets 9 are aligned, the spring 7 causes the locking pin 6 to pop out of the inner cavity of the slide groove 5 and finally engage with the socket 9, thus fixing the locking block 4 and the housing 3. This allows the end cap 1 to be installed onto the housing 3. It should be noted that the other end cap 1 is installed onto the housing 3 in the same way. After installing one end cap 1, the internal components of the battery are first placed into the housing 3, and then the other end cap 1 is installed onto the housing 3 for sealing. To ensure the battery's airtightness, a sealing ring can be placed in the slot 2, or sealant can be applied to achieve a seal. Then, the protective shell 10 is placed onto the housing 3, and the two protective caps are then... The protective cap 11 is inserted into the top and bottom of the protective shell 10, thus completing the disassembly and assembly of the lithium battery. This provides convenience for users, and all components of the battery remain undamaged and can be reused, reducing costs. The protective shell 10 is located on the outside of the shell 3 to protect the battery, and the protective cap 11 serves the same purpose. The protective cap 11 works in conjunction with the protective shell 10 to improve the safety of the lithium battery. The pin 12 and coil 13 are both important internal components of the battery, used to store and release electrical energy. The two ends of the pin 12 are the positive and negative terminals of the battery, respectively. It should be noted that the specific details of the battery's internal structure can be found in the composition of other lithium battery models on the market; this is existing technology and will not be elaborated upon further in this article.The clamp 14 is fixed to the surface of the protective shell 10, and the insert 16 can be inserted into the slot 15. This allows two batteries to be used together by the slot 15 and the insert 16, providing users with more options. The retaining ring 17 is an elastic retaining ring made of rubber material, which serves both a sealing function and a positioning function for the protective cover 11, without affecting disassembly, thus providing convenience for users. The through hole 18 is for inserting the pin 12, allowing the end cover 1 to be snapped onto the shell 3 without being obstructed by the pin 12. It should be noted that the two ends of the pin 12 are the positive and negative terminals of the battery, ensuring the normal operation of the lithium battery. The through hole 18 on the protective cover 11 is similar; the opening is for the insertion of the locking block 4. When assembling the end cover 1 and the shell 3, the locking block 4 on the inside of the shell 3 passes through this opening and snaps into the locking groove 8, thus guiding and limiting the assembly of the end cover 1 and the shell 3, providing convenience for users.

[0031] Therefore, a flexible disassembly and snap-fit ​​structure design is adopted. The lithium battery casing and the cover are assembled together by snap-fit. When disassembling the battery, the end cap can be twisted to quickly separate it from the casing and complete the disassembly structure. This improves the disassembly speed and efficiency of lithium batteries. Moreover, the disassembled parts can be reassembled and reused, reducing cost investment and providing convenience for users.

[0032] A protective shell 10 is fitted on the outside of the housing 3. Protective covers 11 are fastened to the top and bottom of the protective shell 10. The protective covers 11 are located on the outside of the end cap 1.

[0033] Specifically, the protective cover 11 and the protective shell 10 are designed such that the protective shell 10 is located on the outside of the shell 3 to protect the battery, and the protective cover 11 is used in conjunction with the protective shell 10 to improve the safety of lithium battery use.

[0034] A pin 12 is provided through the two end caps 1, and a plurality of coils 13 located inside the housing 3 are wound on the surface of the pin 12. The coils 13 are located between the two end caps 1.

[0035] Specifically, the pin 12 and coil 13 are important internal components of the battery, used to store and release electrical energy. The two ends of the pin 12 are the positive and negative terminals of the battery, respectively. It should be noted that the specific details of the battery's internal structure can be found in the structure of other lithium batteries on the market, which is existing technology and will not be discussed further in this article.

[0036] A sleeve 14 is fixedly connected to the surface of the protective shell 10. A slot 15 is provided on one side of the top of the sleeve 14. A plug 16 that matches the slot 15 is fixedly connected to one side of the sleeve 14.

[0037] Specifically, the clamp 14, slot 15, and plug 16 are configured such that the clamp 14 is fixed to the surface of the protective shell 10, and the plug 16 can be inserted into the slot 15. In this way, the two batteries can be used together by the slot 15 and the plug 16, providing users with more options.

[0038] The top and bottom of the inner cavity of the protective shell 10 are integrally formed with retaining rings 17, which are located on the outside of the protective cover 11.

[0039] Specifically, the retaining ring 17 is made of rubber and is elastic. It can not only seal the seal, but also position the protective cover 11. At the same time, it will not affect the disassembly process, thus providing convenience for users.

[0040] Both the end cap 1 and the protective cap 11 have through holes 18 on one side that are adapted to the pin 12.

[0041] Specifically, the through hole 18 is designed to insert the pin 12, so that the end cover 1 can be snapped onto the housing 3 without being blocked by the pin 12. It should be noted that the two ends of the pin 12 are the positive and negative terminals of the battery, respectively, to ensure the normal use of the lithium battery. The through hole 18 on the protective cover 11 is the same.

[0042] An opening adapted to the card block 4 is provided on one side of the top of the inner cavity of the card slot 2 8.

[0043] Specifically, the opening is designed for inserting the locking block 4. When assembling the end cap 1 and the housing 3, the locking block 4 on the inside of the housing 3 passes through the opening and is inserted into the locking slot 8, thereby guiding and limiting the assembly of the end cap 1 and the housing 3, and providing convenience for the user's assembly work.

[0044] It should be noted that the functions to be achieved by each hardware component in this utility model are supported by a large number of mature technologies and belong to the prior art. The essence of this utility model is to optimize and combine existing hardware and its connection methods for specific application scenarios to meet the adaptation requirements of specific application scenarios and solve the problems raised in the background technology (without involving improvements to the internal software of the hardware).

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery with easily detachable components, comprising two end caps (1) distributed vertically, characterized in that: A housing (3) is provided between two end caps (1). The two ends of the housing (3) are respectively inserted into the two end caps (1). The end cap (1) has a slot 1 (2) adapted to the housing (3) on the side facing the housing (3). The bottom of both sides of the inner cavity of the housing (3) is fixedly connected to a block (4). The top of the block (4) is provided with a groove (5). The inner cavity of the groove (5) is slidably installed with a pin (6). The bottom of the pin (6) is fixedly connected with a spring (7). The end of the spring (7) away from the pin (6) is fixedly connected to the inner wall of the groove (5). The top of the end cap (1) has slot 2 (8) adapted to the block (4). The top of the inner cavity of slot 2 (8) has evenly distributed insertion holes (9) adapted to the pin (6).

2. A lithium battery with easily detachable components according to claim 1, characterized in that: The outer side of the housing (3) is fitted with a protective shell (10), and the top and bottom of the protective shell (10) are fastened with protective covers (11), which are located outside the end cap (1).

3. A lithium battery with easily detachable components according to claim 2, characterized in that: A pin (12) is provided between the two end caps (1), and a plurality of coils (13) located inside the housing (3) are wound on the surface of the pin (12). The coils (13) are located between the two end caps (1).

4. A lithium battery with easily detachable components according to claim 3, characterized in that: The protective shell (10) is fixedly connected to a sleeve (14), and a slot (15) is provided on one side of the top of the sleeve (14). A plug (16) that matches the slot (15) is fixedly connected to one side of the sleeve (14).

5. A lithium battery with easily detachable components according to claim 4, characterized in that: The top and bottom of the inner cavity of the protective shell (10) are integrally formed with retaining rings (17), which are located on the outside of the protective cover (11).

6. A lithium battery with easily detachable components according to claim 5, characterized in that: Both the end cap (1) and the protective cap (11) have through holes (18) on one side that are adapted to the pin (12).

7. A lithium battery with easily detachable components according to claim 6, characterized in that: The top of the inner cavity of the second slot (8) is provided with an opening that is compatible with the card block (4).