Anti-loosening sealing colloidal particle

Abstract

The utility model relates to an anti-loosening sealing colloidal particle which comprises a cover body provided with a liquid injection hole and a particle body inserted into the liquid injection hole. The liquid injection hole comprises a body section and a step section located above the body section, and the surface shape size of the step section is larger than that of the body section, so that a countersunk head structure is formed; at least two lock holes are formed in the bottom wall of the step section; the particle body is of a T-shaped structure matched with the countersunk head structure and comprises a stopping section used for being connected with the step section in an abutting mode and a blocking section used for being inserted into the body section. A lock table matched with the lock hole is arranged on the bottom wall of the step section, the blocking section is inserted into the body section in an interference fit mode, and the lock table is meshed with the lock hole. According to the technical scheme, based on locking of the lock table and the lock hole, an anti-loosening structure can be formed, and the granules are prevented from being separated from the cover body. Therefore, the risk that the sealing colloidal particles are loosened after liquid injection can be effectively avoided, and the welding yield of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries and relates to anti-loosening and retreating sealing rubber particles. Background Art

[0002] Lithium-ion batteries are widely used in portable electronic devices and electric vehicles because of their advantages such as high mass-to-energy ratio, long service life, high rated voltage, low self-discharge rate and green environmental protection.

[0003] In the battery manufacturing process, after the aluminum shell battery is filled with liquid, it is necessary to insert sealing rubber particles and then weld and seal them. However, the sealing rubber particles currently on the market are interference fit with the liquid injection holes, which poses a risk of loosening outwards. Once they hit the sealing nails, it will cause poor welding of the sealing nails. In order to solve this problem, it is necessary to provide a more reasonable technical solution to solve the problem of easy loosening of the sealing rubber particles and the liquid injection holes. Utility Model Content

[0004] The utility model aims to provide an anti-loosening sealing rubber particle to solve the problem that the sealing rubber particle and the liquid injection hole are easy to loosen outwards in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an anti-loosening and backing sealing rubber particle, comprising a cover body provided with a liquid injection hole and a particle body inserted in the liquid injection hole; the liquid injection hole comprises a body section and a stage section located above the body section, the surface size of the stage section is larger than the surface size of the body section to form a countersunk structure; the bottom wall of the stage section is provided with at least two locking holes;

[0006] The particle body is formed into a T-shaped structure adapted to the countersunk structure, including a stop section for abutting against the platform stage and a blocking section for inserting into the main body section; the bottom wall of the platform stage is provided with a locking platform adapted to the locking hole, the blocking section is inserted into the main body section with an interference fit, and the locking platform bites into the locking hole.

[0007] In a possible design, the side wall of the locking hole is formed with a boss protruding in the radial direction, and the locking platform is provided with a radially extending limit platform. When the blocking section is inserted into the main body section, the limit platform slides into the locking hole and abuts against the boss.

[0008] In a possible design, the boss has a curved surface, and the curvature of the curved surface is set to be larger at the upper part and smaller at the lower part.

[0009] In a possible design, the upper surface of the stop segment is an arc-shaped surface.

[0010] In a possible design, the number of the lock holes is 2 to 12, and they are evenly spaced along the circumferential direction of the bottom wall.

[0011] In a possible design, the diameter of the locking platform is D, and the distance between two bosses located on the same diameter is d, wherein D>d, and the difference between the two is 0.1-0.3 mm.

[0012] Through the above technical solution, based on the locking of the lock platform and the lock hole, an innovative anti-loosening structure is formed to ensure that the particles are tightly fixed inside the cover body to prevent any form of loosening or falling off. It not only simplifies the production process, but also significantly improves the yield rate of battery welding. As a result, the battery welding process is more stable and efficient. Its exquisite design and precise manufacturing process ensure that the particles can be accurately fixed in the predetermined position, thereby fundamentally avoiding the risk of the sealing particles loosening after liquid injection. In addition, the anti-loosening structure is also highly durable and can withstand various stresses generated during battery welding, ensuring the stability and long-term reliability of battery welding. At the same time, this design also brings great convenience to the battery manufacturing process, reduces possible problems on the production line, and improves production efficiency. The anti-loosening structure not only optimizes the process flow of battery welding, but also significantly improves the yield rate of battery welding, bringing revolutionary changes to the battery manufacturing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of the anti-loosening and retreating sealing rubber particles provided by the utility model in one embodiment;

[0015] Figure 2 A schematic diagram of the structure of the cover body of the anti-loosening and retreating sealing rubber granule provided by the utility model;

[0016] Figure 3 A schematic diagram of the structure of the lock hole in the anti-loosening and sealing rubber particle provided by the utility model;

[0017] Figure 4 A schematic diagram of the structure of the granules in the anti-loosening and retreating sealing granules provided by the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the structure of the locking platform of the anti-loosening and retreating sealing rubber particles provided by the utility model.

[0019] In the above drawings: 1-cover body, 2-liquid injection hole, 21-body section, 22-stage section, 23-locking hole, 24-boss, 3-granular body, 31-stop section, 32-blocking section, 33-locking stage, 34-limiting stage. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention.

[0021] The specific structural and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0022] According to the first aspect of the present disclosure, there is provided an anti-loosening and back-off sealing rubber particle. Figures 1 to 5 The specific implementation of the anti-loosening and retreating sealing rubber particles is shown.

[0023] See also Figures 1 to 5 As shown, the anti-loosening and back-off sealing rubber granules include a cover body 1 provided with a liquid injection hole 2 and a granule body 3 inserted in the liquid injection hole 2; the liquid injection hole 2 includes a body section 21 and a step section 22 located above the body section 21, and the surface size of the step section 22 is larger than the surface size of the body section 21 to form a countersunk structure. Such a design enhances the stability of the product and makes it more reliable when used.

[0024] The bottom wall of the stage 22 is provided with at least two locking holes 23. The granule 3 is formed into a T-shaped structure adapted to the countersunk structure, including a stopper section 31 for abutting against the stage 22 and a plugging section 32 for inserting into the body section 21; the bottom wall of the stage 22 is provided with a locking stage 33 adapted to the locking holes 23, and the plugging section 32 is inserted into the body section 21 with an interference fit. Such a design ensures that the granule 3 can be firmly fixed in place after being inserted into the injection hole 2 to prevent it from loosening or falling off. The locking stage 33 bites into the locking hole 23, further enhancing the stability of the product.

[0025] Through the above technical solution, based on the locking of the locking platform 33 and the locking hole 23, an innovative anti-loosening structure is formed to ensure that the particle body 3 is tightly fixed inside the cover body 1 to prevent any form of loosening or falling off. It not only simplifies the production process, but also significantly improves the yield rate of battery welding. As a result, the battery welding process is more stable and efficient. Its exquisite design and precise manufacturing process ensure that the particle body 3 can be accurately fixed in the predetermined position, thereby fundamentally avoiding the risk of the sealing rubber particles loosening after injection. In addition, the anti-loosening structure is also highly durable and can withstand various stresses generated during the battery welding process, ensuring the stability and long-term reliability of the battery welding. At the same time, this design also brings great convenience to the battery manufacturing process, reduces possible problems on the production line, and improves production efficiency. The anti-loosening structure not only optimizes the process flow of battery welding, but also significantly improves the yield rate of battery welding, bringing revolutionary changes to the battery manufacturing industry.

[0026] In one embodiment, the side wall of the locking hole 23 is formed with a boss 24 protruding in the radial direction, and the locking platform 33 is provided with a radially extending limit platform 34. When the blocking section 32 is inserted into the body section 21, the limit platform 34 slides into the locking hole 23 and abuts against the boss 24. The particle body 3 and the injection hole 2 are interference fit. If there is a force to loosen outward, the matching structure of the limit platform 34 and the boss 24 will interfere with each other, thereby preventing the sealing rubber particles from loosening and hitting the sealing nail, thereby ensuring the welding yield.

[0027] In one embodiment, the boss 24 has a curved surface, and the curvature of the curved surface is set to be larger at the upper part and smaller at the lower part. In this way, the blocking section 32 of the granule 3 can be guided to be inserted into the main body section 21 of the injection hole 2 based on the upper part of the curved surface, and the locking platform 33 of the granule 3 can be blocked by the lower part of the curved surface to prevent it from being loosened.

[0028] Furthermore, the upper surface of the stopper section 31 is an arc-shaped surface. On the one hand, it is convenient to operate the granular body 3, and on the other hand, based on the structure that the thickness of the stopper section 31 becomes thinner as it goes outward, the locking platform 33 is deformed, so as to better cooperate with the locking hole 23. Moreover, based on this gradual structure, it is also beneficial to disperse the stress through gradual deformation, avoiding the situation of tearing due to stress concentration.

[0029] In an embodiment provided by the present disclosure, the number of the lock holes 23 is 2 to 12, and they are evenly spaced along the circumferential direction of the bottom wall. In this way, it is beneficial to make the stopper section 31 of the granule 3 evenly stressed, while increasing the bonding point to ensure the anti-loosening effect. Specifically, the lock holes 23 are arranged in pairs, and the connecting line of the two lock holes 23 passes through the center of the injection hole 2.

[0030] In an embodiment provided by the present disclosure, the diameter of the locking platform 33 is D, and the distance between the two bosses 24 located on the same diameter is d, wherein D>d, and the difference between the two is 0.1-0.3 mm. This arrangement enables the locking platform 33 to be effectively stopped by the boss 24 in the locking hole 23, thereby ensuring the anti-loosening effect.

[0031] In the present disclosure, the difference between the two is 0.2 mm. In other embodiments, the interference may also be 0.1 mm, 0.3 mm, etc. For this, those skilled in the art may flexibly set it according to actual needs.

[0032] It should be noted that the utility model is not limited to the above optional implementations, and anyone can derive other various forms of products under the inspiration of the utility model. The above specific implementations should not be understood as limiting the scope of protection of the utility model. The scope of protection of the utility model shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. An anti-loosening sealing rubber particle, characterized in that: It comprises a cover body provided with a liquid injection hole and a granular body inserted in the liquid injection hole; the liquid injection hole comprises a body section and a platform section located above the body section, the surface dimension of the platform section is larger than the surface dimension of the body section to form a countersunk structure; the bottom wall of the platform section is provided with at least two locking holes; The particle body is formed into a T-shaped structure adapted to the countersunk structure, including a stop section for abutting against the platform stage and a blocking section for inserting into the main body section; the bottom wall of the platform stage is provided with a locking platform adapted to the locking hole, the blocking section is inserted into the main body section with an interference fit, and the locking platform bites into the locking hole.

2. The anti-loosening sealing rubber particles according to claim 1, characterized in that: The side wall of the locking hole is formed with a boss protruding in the radial direction, and the locking platform is provided with a radially extending limit platform. When the blocking section is inserted into the main body section, the limit platform slides into the locking hole and abuts against the boss.

3. The anti-loosening sealing rubber particles according to claim 2, characterized in that: The boss has a curved surface, and the curvature of the curved surface is set to be larger at the upper part and smaller at the lower part.

4. The anti-loosening sealing rubber particles according to claim 1, characterized in that: The upper surface of the stop section is an arc-shaped surface.

5. The anti-loosening sealing rubber particles according to claim 1, characterized in that: The number of the lock holes is 2 to 12, and the lock holes are evenly spaced along the circumferential direction of the bottom wall.

6. The anti-loosening sealing rubber particles according to claim 1, characterized in that: The diameter of the locking platform is D, and the distance between two bosses located on the same diameter is d, wherein D>d, and the difference between the two is 0.1-0.3 mm.

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