Lithium battery shell cover plate sealing structure

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery shell cover plate sealing structure which comprises a box body for storing a lithium battery, a drawing cover plate is arranged on the top of the box body, and an inclined sliding groove is formed in the top of the side wall, parallel to the drawing direction of the drawing cover plate, of the box body. The side wall, facing the covering direction of the drawing cover plate, of the box body is provided with an abutting plate which abuts against the drawing cover plate after the drawing cover plate covers the box body, the outer side of the side wall, opposite to the abutting plate, of the box body is provided with an elastic clamping part which limits the drawing cover plate after the drawing cover plate covers the box body, and the end, facing the abutting plate, of the inclined sliding groove is lower than the end, facing the elastic clamping part, of the inclined sliding groove. Inclined insertion strips inserted into the inclined sliding grooves are arranged on the inner walls, corresponding to the two sides of the inclined sliding grooves, of the drawing cover plate, the lower ends of the inclined insertion strips are inserted from the higher ends of the inclined sliding grooves, and the bottom face of the drawing cover plate is attached to the top of the box body along with insertion of the inclined insertion strips and the inclined sliding grooves. The problem that the sealing performance is reduced due to the fact that most of the current lithium battery shell cover plates are fixed by bolts and are easy to loosen or rust is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery shell cover sealing structure. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become mainstream and are widely used in power tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace and other fields. After the lithium battery is assembled during use, it needs to be placed in a casing to ensure the safety and life of the lithium battery. Generally, the casing cover of a lithium battery is assembled with bolts. After long-term use, the bolts are prone to loosening or rusting, resulting in reduced sealing inside the lithium battery casing, which easily leads to dust and water entering the casing, thereby affecting the service life of the lithium battery. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a lithium battery housing cover sealing structure, which solves the problem that the current lithium battery housing cover is mostly fixed with bolts, which is easy to loosen or rust, resulting in reduced sealing.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery housing cover sealing structure, comprising a box body for storing lithium batteries, the top of the box body is open and is provided with a pull-out cover plate for covering the opening, the top of the side wall of the box body parallel to the pull-out direction of the pull-out cover plate is provided with an inclined slide groove engaged with the inner side wall of the pull-out cover plate, the side wall of the box body facing the closing direction of the pull-out cover plate is provided with an abutment plate abutting with the pull-out cover plate after the pull-out cover plate is closed, and the outer side of the side wall of the box body opposite to the abutment plate is provided with an elastic clamping portion for limiting the pull-out cover plate after the pull-out cover plate is closed;

[0007] One end of the inclined slide groove facing the abutment plate is lower than the end facing the elastic clamping portion, and the inner walls of the pull-out cover plate corresponding to the two sides of the inclined slide groove are provided with inclined insertion strips inserted into the inclined slide groove, and the lower end of the inclined insertion strip is inserted from the high end of the inclined slide groove, and the insertion of the inclined insertion strip and the inclined slide groove realizes the fit between the bottom surface of the pull-out cover plate and the top of the box body.

[0008] Preferably, the elastic clamping portion includes an adjustment frame protruding from the outside of the side wall of the box body, and an elastic adjustment block assembly that is symmetrically arranged in the adjustment frame and is clamped with the side wall of the pull-out cover plate. The elastic adjustment block assembly limits the pull-out cover plate after the bottom surface of the pull-out cover plate is in place with the top of the box body.

[0009] Preferably, the elastic adjustment block assembly includes a fixed block fixed in the middle of the adjustment frame, horizontally arranged pressure springs are symmetrically provided on both sides of the fixed block, the outer ends of the pressure springs are connected to wedge-shaped blocks extending to the outside of the two side walls of the adjustment frame, and the side walls of the wedge-shaped blocks facing the opposite direction of the box body are provided with a shifting bar for moving the wedge-shaped blocks.

[0010] Preferably, the side wall of the wedge-shaped block facing the opposite direction of the box body is inclined, and the side wall of the wedge-shaped block facing the box body is parallel to the outer side wall of the box body;

[0011] The outer wall of the adjustment frame is provided with a slot for the shifting bar to move.

[0012] Preferably, the abutment plate comprises a vertical abutment plate fixedly arranged on the outer side of the side wall of the box body, and a horizontal pressing plate facing the box body for pressing the top wall of the pull-out cover plate is provided on the top of the vertical abutment plate.

[0013] Preferably, the pull-out cover plate has a side opening corresponding to one side of the abutting plate, and the side of the pull-out cover plate corresponding to one side of the elastic clamping portion is provided with a rectangular frame clamped with the elastic clamping portion.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a lithium battery housing cover sealing structure, which has the following beneficial effects:

[0016] The cover is closed by means of an inclined slide groove which is arranged obliquely. The pull-out cover moves downward along with the inclined slide groove when being pushed. When the end of the pull-out cover abuts against the abutment plate, the bottom wall of the pull-out cover fits tightly against the top wall of the box body, so that the bottom wall of the pull-out cover and the box body are closed. At the same time, an elastic clamping part for clamping the pull-out cover is provided at the end of the pull-out cover. When the pull-out cover is pushed into place, the elastic adjustment block assembly clamps the pull-out cover to a limit position, so that the pull-out cover is limited and fixed, thereby avoiding the situation where the cover fixed by bolts is easy to loosen and facilitating disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is an overall schematic diagram of the box body and the drawer cover of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the drawer cover after cutting;

[0020] Figure 3 It is a schematic diagram of the structure of the elastic clamping part of the utility model.

[0021] Description of reference numerals:

[0022] 1. Box body; 2. Pull-out cover; 21. Inclined insert; 22. Rectangular frame; 3. Inclined slide; 4. Abutment plate; 41. Vertical abutment plate; 42. Horizontal pressure plate; 5. Elastic clamping part; 51. Adjustment frame; 511. Slot; 52. Elastic adjustment block assembly; 521. Fixed block; 522. Press spring; 523. Wedge-shaped clamping block; 524. Push bar. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Figure 1-3 The invention provides a lithium battery housing cover sealing structure, comprising a box 1 for storing lithium batteries, the box 1 having an opening at the top and provided with a drawer cover 2 for covering the opening, a side wall top of the box 1 parallel to the drawer cover 2 is provided with an inclined slot 3 which is engaged with the inner side wall of the drawer cover 2, a side wall of the box 1 facing the drawer cover 2 in the covering direction is provided with an abutment plate 4 which abuts with the drawer cover 2 after the drawer cover 2 is covered, and an elastic clamping portion 5 is provided on the outer side of the side wall of the box 1 opposite to the abutment plate 4 for limiting the drawer cover 2 after the drawer cover 2 is covered. In actual work, after the lithium battery pack is placed in the box 1, the drawer cover 2 is inserted from the end of the inclined slot 3 on one side of the elastic clamping portion 5 and pushed horizontally to the top opening of the box 1 to cover the box 1, and then the elastic clamping portion 5 clamps the covered drawer cover 2 to prevent the drawer cover 2 from loosening and displacement during use;

[0025] The end of the inclined slide groove 3 facing the abutment plate 4 is lower than the end facing the elastic clamping portion 5. The inner walls of the pull-out cover 2 corresponding to the two sides of the inclined slide groove 3 are provided with inclined insertion strips 21 inserted into the inclined slide groove 3. The lower end of the inclined insertion strip 21 is inserted from the high end of the inclined slide groove 3. As the inclined insertion strip 21 and the inclined slide groove 3 are plugged, the bottom surface of the pull-out cover 2 and the top of the box body 1 are fitted. In actual use, the lower end of the inclined insertion strip 21 on the inner side wall of the pull-out cover 2 is aligned with the side wall of the box body 1 toward the elastic clamping portion 5. The high end of the inclined slide groove 3 on one side of the snap-fit ​​portion 5 is inserted into the inclined slide groove 3, and then the pull-out cover 2 is pushed to move toward the abutment plate 4. Since the inclined slide groove 3 and the inclined insertion strip 21 are both inclined, the pull-out cover 2 moves downward along with the inclined slide groove 3 when being pushed. After the pull-out cover 2 is pushed into place, the end of the pull-out cover 2 abuts against the abutment plate 4, and at the same time, the bottom wall of the pull-out cover 2 fits against the top wall of the box body 1, thereby achieving the closure of the bottom wall of the pull-out cover 2 and the box body 1.

[0026] The elastic clamping portion 5 includes an adjustment frame 51 protruding and fixed on the outer side of the side wall of the box body 1, and an elastic adjustment block assembly 52 is symmetrically arranged in the adjustment frame 51 and clamped with the side wall of the pull-out cover 2. The elastic adjustment block assembly 52 limits the pull-out cover 2 after the bottom surface of the pull-out cover 2 is fitted into place with the top of the box body 1. In actual use, when the pull-out cover 2 is pushed into place, the elastic adjustment block assembly 52 clamps the pull-out cover 2 toward the outer side of the side wall opposite to the pushed cover, so that the pull-out cover 2 is limited and fixed.

[0027] The spring 522 is symmetrically arranged on both sides of the fixing block 521, and the outer ends of the spring 522 are fixedly connected to wedge-shaped clamping blocks 523 extending to the outer sides of the two side walls of the adjusting frame 51. The wedge-shaped clamping blocks 523 are provided with a lever 524 for shifting the wedge-shaped clamping blocks 523 on the side walls opposite to the box body 1. The wedge-shaped clamping blocks 523 are inclined toward the side walls opposite to the box body 1. The wedge-shaped clamping blocks 523 are parallel to the outer side walls of the box body 1 on the side walls of the box body 1. The outer wall of the adjusting frame 51 is provided with a slot 511 for the lever 524 to move. The side edge of the pull-out cover plate 2 corresponding to the elastic clamping portion 5 is provided with a rectangular frame 22 that is clamped with the outer side of the adjusting frame 51. In actual use, when the pull-out cover plate 2 is pushed to abut against the abutting plate 4, the rectangular frame 22 is correspondingly covered on the outer side of the adjusting frame 51. When the block 523 is engaged, since the side of the wedge-shaped block 523 facing the outside is inclined, the rectangular frame 22 pushes the wedge-shaped block 523 to press the pressing spring 522, so that the rectangular frame 22 can pass through the wedge-shaped block 523 to move between the side wall of the box body 1 and the wedge-shaped block 523. After the rectangular frame 22 passes through the wedge-shaped block 523, due to the elasticity of the pressing spring 522, the wedge-shaped block 523 is pushed back to the outside of the adjustment frame 51, and the rectangular frame 22 is engaged. When the pull-out cover 2 needs to be removed, the strip 524 is manually pushed toward the middle, and the length of the slot 511 is adapted to the movable wedge-shaped block 523, while limiting the range of movement of the strip 524 so that the wedge-shaped block 523 can be moved into the adjustment frame 51. At this time, the pull-out cover 2 is pulled in the direction opposite to the abutment plate 4, so that the rectangular frame 22 is disengaged from the elastic clamping portion 5, and at the same time, the inclined insertion strip 21 moves in the inclined slide groove 3 to open the pull-out cover 2.

[0028] The side opening of the pull-out cover 2 corresponds to the abutment plate 4 on one side to ensure that the pull-out cover 2 can be pushed smoothly. The abutment plate 4 includes a vertical abutment plate 41 fixedly arranged on the outer side of the side wall of the box body 1. The top of the vertical abutment plate 41 is provided with a horizontal pressing plate 42 facing the box body 1 for pressing the top wall of the pull-out cover 2. When the pull-out cover 2 is closed, the open end of the pull-out cover 2 abuts against the vertical abutment plate 41, and at the same time, the bottom wall of the pull-out cover 2 fits tightly against the top wall of the box body 1. At this time, the end of the pull-out cover 2 facing the abutment plate 4 is correspondingly clamped under the horizontal pressing plate 42, so that the tightness of the pull-out cover 2 is ensured while the open end of the pull-out cover 2 is closed.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery housing cover sealing structure, comprising a box (1) for storing lithium batteries, characterized in that: The top of the box body (1) is open and is provided with a drawable cover plate (2) for covering the opening; the top of the side wall of the box body (1) parallel to the drawable direction of the drawable cover plate (2) is provided with an inclined slide groove (3) for clamping with the inner side wall of the drawable cover plate (2); the side wall of the box body (1) facing the closing direction of the drawable cover plate (2) is provided with an abutment plate (4) for abutting with the drawable cover plate (2) after the drawable cover plate (2) is closed; the outer side of the side wall of the box body (1) opposite to the abutment plate (4) is provided with an elastic clamping portion (5) for limiting the position of the drawable cover plate (2) after the drawable cover plate (2) is closed; One end of the inclined slide groove (3) facing the abutment plate (4) is lower than the other end facing the elastic clamping portion (5); inner walls of the pull-out cover plate (2) corresponding to both sides of the inclined slide groove (3) are provided with inclined insertion strips (21) inserted into the inclined slide groove (3); the lower end of the inclined insertion strip (21) is inserted from the upper end of the inclined slide groove (3); and as the inclined insertion strip (21) and the inclined slide groove (3) are inserted, the bottom surface of the pull-out cover plate (2) and the top of the box body (1) are fitted together.

2. A lithium battery housing cover sealing structure according to claim 1, characterized in that: The elastic clamping portion (5) comprises an adjustment frame (51) protruding from the outside of the side wall of the box body (1), and an elastic adjustment block assembly (52) is symmetrically arranged in the adjustment frame (51) and is clamped with the side wall of the pull-out cover plate (2). The elastic adjustment block assembly (52) limits the pull-out cover plate (2) when the bottom surface of the pull-out cover plate (2) and the top of the box body (1) are in place.

3. A lithium battery housing cover sealing structure according to claim 2, characterized in that: The elastic adjustment block assembly (52) comprises a fixed block (521) fixed to the middle part of the adjustment frame (51), and horizontally arranged pressing springs (522) are symmetrically arranged on both sides of the fixed block (521), and the outer ends of the pressing springs (522) are connected to wedge-shaped clamping blocks (523) extending to the outer sides of the two side walls of the adjustment frame (51), and the side walls of the wedge-shaped clamping blocks (523) facing the opposite direction of the box body (1) are provided with a shifting bar (524) for shifting the wedge-shaped clamping blocks (523).

4. A lithium battery housing cover sealing structure according to claim 3, characterized in that: The side wall of the wedge-shaped clamping block (523) facing the opposite direction of the box body (1) is inclined, and the side wall of the wedge-shaped clamping block (523) facing the box body (1) is parallel to the outer side wall of the box body (1); The outer wall of the adjustment frame (51) is provided with a slot (511) for the shifting bar (524) to move.

5. The lithium battery housing cover sealing structure according to claim 1, characterized in that: The abutment plate (4) comprises a vertical abutment plate (41) fixedly arranged on the outside of the side wall of the box body (1), and a horizontal pressing plate (42) facing the box body (1) and used for pressing the top wall of the drawer cover plate (2) is provided on the top of the vertical abutment plate (41).

6. A lithium battery housing cover sealing structure according to claim 5, characterized in that: The side opening of the pull-out cover plate (2) corresponds to one side of the abutment plate (4), and the side of the pull-out cover plate (2) corresponding to one side of the elastic clamping portion (5) is provided with a rectangular frame (22) clamped with the elastic clamping portion (5).

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