Lithium battery shell sealing structure

Abstract

The utility model discloses a lithium battery shell sealing structure, relates to the technical field of lithium batteries, and aims to solve the technical problem that the sealing effect is easily influenced by an improper assembly position due to inaccurate position alignment of a sealing structure combined between a current lithium battery shell and a cover body, and comprises a shell and a cover body, a rectangular groove is formed in the side edge of the top of the shell, a first sealing strip is fixedly arranged in the rectangular groove, and a second sealing strip attached to the top of the first sealing strip is fixedly installed on the side face of the bottom of the cover body. And the positioning and locking effects can be achieved under the combination of the arc-shaped convex strip at the top of the first sealing strip and the arc-shaped groove at the bottom of the second sealing strip, so that deviation is not likely to occur when the assembly position of the cover body and the shell is fixed, the combination tightness is improved, and the sealing structure has the advantages of being simple in positioning and combination operation and stable in connection.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and more specifically, to a lithium battery casing sealing structure. Background Technology

[0002] The sealing structure of a lithium battery casing typically consists of a sealing ring made of elastic material such as rubber placed between the cover and the casing. When the cover is fastened to the casing by threads or clips, the sealing ring is compressed and deformed, filling the gap between the cover and the casing. The elastic force generated by this compression allows the ring to fit tightly against the contact surface, thereby preventing electrolyte leakage and the ingress of outside air and moisture.

[0003] Existing sealing structures used to bond the lithium battery casing and cover typically employ rubber sealing strips. To ensure the sealing strip achieves the appropriate degree of compression, precise control of the closing force and position between the casing and cover is required during assembly. This increases the difficulty and time cost of assembly and demands high levels of skill and experience from assembly workers. Improper assembly can lead to uneven compression of the sealing strip, affecting the sealing effect. Therefore, we propose a new sealing structure for lithium battery casings. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a lithium battery casing sealing structure to solve the technical problem that the current sealing structure used to combine the lithium battery casing and the cover has the problem of misalignment of positions, which easily leads to improper assembly position affecting the sealing effect.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a lithium battery casing sealing structure, including a casing and a cover, wherein a rectangular groove is provided on the top side of the casing, a first sealing strip is fixedly disposed inside the rectangular groove, and a second sealing strip that fits against the top of the first sealing strip is fixedly installed on the bottom side of the cover;

[0006] The top of the first sealing strip has a plurality of arc-shaped protrusions integrally formed thereon, and a positioning groove is formed between two adjacent arc-shaped protrusions;

[0007] The bottom of the second sealing strip is provided with an arc-shaped groove that engages with the arc-shaped protrusion, and the protruding edge between adjacent arc-shaped grooves is adapted to engage with the positioning clamping groove.

[0008] The utility model discloses a rectangular groove's establishment is convenient for the second sealing strip to insert inside and combine with the first sealing strip, and the arc convex strip on the top of the first sealing strip and the arc groove on the bottom of the second sealing strip combine to reach the effect of positioning locking, so that the assembling position of fixed cover body and shell is not easy to appear deviation, improves the compactness of combination, and the effect of sealed connection can be strengthened in this way, and the phenomenon of misalignment of sealing structure can be reduced through the structure cooperation, reduces the assembly difficulty, and the sealing effect of sealing structure use is maintained.

[0009] Preferably, the top of the shell and the outer side of the rectangular groove are fixedly provided with a positioning frame strip, and the bottom of the cover body and the outer side of the second sealing strip are upwardly provided with a positioning groove combined with the positioning frame strip.

[0010] Preferably, the bottom of the cover body is fixedly provided with a rectangular skeleton, and the top of the second sealing strip is provided with a butt joint groove combined with the rectangular skeleton.

[0011] Preferably, the side of the rectangular skeleton away from each other is provided with a limiting clamping groove, the side of the butt joint groove opposite to each other is integrally provided with a limiting strip combined with the limiting clamping groove, and the outer side of the limiting strip is an arc surface.

[0012] Preferably, the first sealing strip is fixedly connected with the inside of the rectangular groove through the fixed adhesive, and the material of the first sealing strip and the second sealing strip is rubber.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1, the utility model discloses a rectangular groove's establishment is convenient for the second sealing strip to insert inside and combine with the first sealing strip, and the arc convex strip on the top of the first sealing strip and the arc groove on the bottom of the second sealing strip combine to reach the effect of positioning locking, so that the assembling position of fixed cover body and shell is not easy to appear deviation, improves the compactness of combination, and the effect of sealed connection can be strengthened in this way, and the phenomenon of misalignment of sealing structure can be reduced through the structure cooperation, reduces the assembly difficulty, and the sealing effect of sealing structure use is maintained.

[0015] 2, the utility model discloses further to the position of the cover body and shell connection with the combination of positioning frame strip and positioning groove can further limit, so that the cover body is not easy to make position deviation in the installation process, keeps the installation position fixed, and the second sealing strip is not easy to extrude and change shape, keeps the good adhesion between the second sealing strip and the rectangular groove, and reduces the existence of gap. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model discloses;

[0017] Figure 2The exploded structure schematic view of the utility model discloses a lithium battery shell sealing structure;

[0018] Figure 3 The Figure 2 Explosive decomposition structure schematic view;

[0019] Figure 4 The Figure 2 Structure enlarged schematic view of part A in it;

[0020] Figure 5 The Figure 3 Structure enlarged schematic view of part B in it;

[0021] Figure 6 The Figure 3 Structure exploded schematic view of the second sealing strip in it;

[0022] Figure 7 The Figure 6 Structure enlarged schematic view of part C in it.

[0023] Mark explanation in the drawing: 1, shell;101, rectangular groove;2, cover body;201, positioning groove;202, rectangular framework;203, limit clamping groove;3, first sealing strip;301, arc convex strip;302, positioning clamping groove;4, second sealing strip;401, arc concave groove;402, butt joint groove;403, limit strip;5, positioning frame strip. Specific implementation

[0024] As Figures 1 to 7 Indicated, the utility model relates to a lithium battery shell sealing structure, including shell 1 and cover body 2, the top side of shell 1 is seted up with rectangular groove 101, the inside fixed setting of rectangular groove 101 has first sealing strip 3, the bottom side of cover body 2 is fixedly installed with the second sealing strip 4 that is combined with the top of first sealing strip 3;Rectangular groove 101 can be set up and the position of first sealing strip 3 is limited, and when second sealing strip 4 is inserted into rectangular groove 101 and is combined with first sealing strip 3, the position of the combination of both can be limited, reach the effect of positioning connection, and it is not easy to appear deviation phenomenon.

[0025] The top of first sealing strip 3 is integrally structured with several arc convex strips 301, and the positioning clamping groove 302 is formed between the adjacent two arc convex strips 301, the bottom of second sealing strip 4 is seted up with the arc concave groove 401 that is combined with arc convex strip 301, and the protruding edge between adjacent arc concave grooves 401 is combined with positioning clamping groove 302;The setting of arc convex strip 301 and the combination of arc concave groove 401 can further strengthen the effect of the connection of first sealing strip 3 and second sealing strip 4, and the design of positioning clamping groove 302 can strengthen the compactness of combination, improve the limiting effect of connection, and the fluctuating connection surface can strengthen the sealing property of combination.

[0026] In the embodiment of the utility model, the top of the shell 1 and the outside of the rectangular groove 101 are fixedly provided with positioning frame strips 5, and the bottom of the cover 2 and the outside of the second sealing strip 4 are provided with positioning grooves 201 combined with the positioning frame strips 5; the combination of the positioning frame strips 5 and the positioning grooves 201 can position the installation position of the cover 2, so that the position is fixed during the fixed installation of the cover 2, and the second sealing strip 4 is not easy to move due to deviation, thereby reducing the extrusion of the second sealing strip 4.

[0027] In the embodiment of the utility model, the bottom of the cover 2 is fixedly provided with a rectangular framework 202, and the top of the second sealing strip 4 is provided with a butt joint groove 402 combined with the rectangular framework 202; the cooperation of the rectangular framework 202 and the butt joint groove 402 can conveniently fix the second sealing strip 4 at the bottom of the cover 2, and also improve the compression strength of the second sealing strip 4 and reduce deformation.

[0028] In the embodiment of the utility model, the opposite sides of the rectangular framework 202 are provided with limiting clamping grooves 203, the opposite sides of the butt joint groove 402 are integrally provided with limiting strips 403 combined with the limiting clamping grooves 203, and the outer side of the limiting strip 403 is an arc surface; the combination of the limiting clamping grooves 203 and the limiting strips 403 can further limit the installation position of the second sealing strip 4 and strengthen the strength of the installation position of the second sealing strip 4.

[0029] In the embodiment of the utility model, the first sealing strip 3 is fixedly connected with the inside of the rectangular groove 101 through adhesive, and the material of the first sealing strip 3 and the second sealing strip 4 is rubber; the adhesive connection can fix the installation position of the first sealing strip 3, so that the installation operation is convenient, and the rubber is easy to be extruded and interference fitted, so that the existence of the gap can be reduced.

[0030] Working principle: the embodiment provides a lithium battery shell sealing structure, when the assembly work of the shell 1 and the cover 2 is completed, first, the cover 2 is placed on the top of the shell 1, so that the bottom of the second sealing strip 4 is aligned with the opening position of the rectangular groove 101, and the positioning groove 201 at the bottom of the cover 2 is aligned with the positioning frame strip 5 at the top of the shell 1, the second sealing strip 4 can be inserted into the inside of the rectangular groove 101 by the way of pressing, so that the second sealing strip 4 is combined with the first sealing strip 3, and the positioning frame strip 5 can be inserted into the inside of the positioning groove 201, so that the position of the cover 2 can be positioned, and the offset during the assembly process is not prone to occur, when the second sealing strip 4 is combined with the first sealing strip 3, the arc-shaped convex strip 301 protruding at the top of the first sealing strip 3 is inserted into the arc-shaped groove 401 at the bottom of the second sealing strip 4, so that the limiting effect of the combination between the first sealing strip 3 and the second sealing strip 4 can be strengthened, the tightness of the butt joint is improved, through the structure cooperation, the connecting position of the sealing structure can be quickly positioned during the assembly process, the offset is not prone to occur, and the sealing effect of the assembly is effectively improved.

[0031] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. A lithium battery casing sealing structure, comprising a casing (1) and a cover (2), characterized in that, A rectangular groove (101) is provided on the top side of the housing (1), and a first sealing strip (3) is fixedly installed inside the rectangular groove (101). A second sealing strip (4) that fits against the top of the first sealing strip (3) is fixedly installed on the bottom side of the cover (2). The top of the first sealing strip (3) has a plurality of arc-shaped protrusions (301) integrally formed, and a positioning groove (302) is formed between two adjacent arc-shaped protrusions (301); The bottom of the second sealing strip (4) is provided with an arc-shaped groove (401) that engages with the arc-shaped protrusion (301), and the protruding edge between adjacent arc-shaped grooves (401) is adapted to engage with the positioning clamping groove (302).

2. The lithium battery casing sealing structure according to claim 1, characterized in that, Positioning frame strips (5) are fixedly provided on the top of the housing (1) and on the outer side of the rectangular groove (101). A positioning groove (201) that is combined with the positioning frame strips (5) is opened on the bottom of the cover (2) and on the outer side of the second sealing strip (4).

3. The lithium battery casing sealing structure according to claim 1, characterized in that, The bottom of the cover (2) is fixedly provided with a rectangular frame (202), and the top of the second sealing strip (4) is provided with a mating groove (402) that is combined with the rectangular frame (202).

4. The lithium battery casing sealing structure according to claim 3, characterized in that, The rectangular frame (202) has a limiting slot (203) on each of its opposite sides, and the mating groove (402) has a limiting strip (403) integrally formed on each of its opposite sides that is combined with the limiting slot (203), and the outer side of the limiting strip (403) is an arc-shaped surface.

5. The lithium battery casing sealing structure according to claim 1, characterized in that, The first sealing strip (3) is fixed to the inside of the rectangular groove (101) by adhesive, and both the first sealing strip (3) and the second sealing strip (4) are made of rubber.

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