Shockproof shell of solid-state lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a shockproof shell of a solid-state lithium battery, which comprises a shell body and a protective frame arranged in the shell body and used for placing the battery, the outer side wall of the protection frame is rotationally connected with a V-shaped rotationally arranged connecting rod, external force is transmitted into the fixing plate through the protection frame, the fixing plate drives a first rotating rod to rotate through collision force by means of a first concave block, a third spring is driven to contract through movement of a connecting block, and movement of the third spring is stabilized through a sliding block; the length of a third spring can be adjusted on the outer surface of a threaded rod by rotating a bolt, a fixing frame is stressed to drive a first spring to contract on the outer surface of a limiting rod, a second rotating rod is stabilized by a second concave block to rotate in a limiting groove, and force is further applied to a connecting block, so that vibration can be effectively filtered, and the service life of the device is prolonged. The damage condition of the battery pack is improved, and the safety and use durability of the battery pack are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a shockproof shell of a solid-state lithium battery. Background Art

[0002] In recent years, in order to reduce the safety risks of energy storage equipment, people have invested more and more energy in the research and development of solid-state batteries. At present, some semi-solid-state batteries have entered the testing stage, but during the testing process, it was found that when bumps and other situations occurred, the battery capacity was greatly reduced.

[0003] In the related technology, spring shock absorption is often used to alleviate the impact. For example, a shockproof shell of a solid-state lithium battery includes: a shell, a cover plate, and a battery limit frame arranged in the shell for placing the battery, a first shock-absorbing spring, a second shock-absorbing spring, and a third shock-absorbing spring, wherein the first shock-absorbing spring, the second shock-absorbing spring, and the third shock-absorbing spring are dispersedly arranged between the battery limit frame and the side wall of the shell. When subjected to impact force, the three shock-absorbing springs work together to effectively improve the collision and damage of the solid-state lithium battery and the shell, and extend the service life of the solid-state lithium battery.

[0004] However, during the test, it was found that when the vehicle is in a bumpy state for a long time, the battery limit frame and the battery inside will continue to shake, and the spring will easily fail due to fatigue. At this time, since the battery has a certain degree of freedom, collisions may still occur, which affects the battery's service life. Utility Model Content

[0005] The purpose of the utility model is to provide a shockproof housing for a solid-state lithium battery in order to solve the above-mentioned problems. The length of the third spring can be adjusted by rotating the bolt on the outer surface of the threaded rod. The first spring is driven to shrink on the outer surface of the limiting rod by the force of the fixed frame. The second concave block stabilizes the rotation of the second rotating rod inside the limiting groove, and further applies force to the connecting block, thereby solving the problems mentioned in the background technology.

[0006] In order to solve the above problems, the utility model provides a technical solution:

[0007] A shockproof shell for a solid-state lithium battery comprises a shell body and a protective frame arranged inside the shell body for placing the battery; an outer wall of the protective frame is rotatably connected to a connecting rod rotatably arranged in a V shape, and an end of the connecting rod away from the protective frame is rotatably connected to the shell body; a third spring is connected to the middle part of the connecting rod, and the third spring has a force on the connecting rod; an adjusting piece is arranged at one end of the third spring away from the connecting rod.

[0008] As a preferred solution of the utility model, the adjusting member includes a fixing frame arranged between the protective frame and the inner wall of the outer shell body, a rotation groove is opened inside the fixing frame, the third spring is arranged in the rotation groove, a threaded rod is threadedly connected to the bottom wall of the rotation groove, and the threaded rod abuts against the end of the third spring away from the connecting rod.

[0009] As a preferred solution of the utility model, the connecting rod includes a first rotating rod and a second rotating rod, and the ends of the first rotating rod and the second rotating rod located at both ends of the connecting rod are respectively rotatably connected to the outer shell body and the protective frame, and a limiting groove is provided on the side wall of the rotating groove, and the first rotating rod and the second rotating rod are inserted into the limiting groove and slidably arranged along the limiting groove.

[0010] As a preferred solution of the utility model, a connecting block is provided at the other end of the third spring, the adjacent ends of the first rotating rod and the second rotating rod are rotatably connected, and the rotatably connected portion is rotatably connected to the connecting block.

[0011] As a preferred solution of the utility model, one end of the threaded rod is connected to a sliding block, and the sliding block is arranged between the third spring and the threaded rod.

[0012] As a preferred solution of the utility model, a fixing frame is connected to the outer surface of the protection frame, a first spring is connected inside the fixing frame, and the other end of the first spring is fixedly connected to the inside of the shell body.

[0013] As a preferred solution of the utility model, a limiting rod is further provided on the inner side wall of the shell body, and the first spring is slidably connected to the limiting rod.

[0014] As a preferred solution of the utility model, a damper is provided on the outer surface of the protective frame, one end of the damper is fixedly connected to the protective frame, and the other end is fixedly connected to the outer shell body. A second spring is provided on the outer surface of the damper, and both ends of the second spring are respectively fixedly connected to the outer shell body and the protective frame.

[0015] As a preferred solution of the utility model, a protective door is provided on the upper surface of the shell body.

[0016] The beneficial effect of the utility model is that the length of the spring can be effectively adjusted by setting the adjusting piece, thereby improving the fatigue condition of the spring, ensuring the shock absorbing effect on the battery, avoiding damage to the battery pack, and improving the safety and durability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0021] In the figure: 1. shell body; 2. protection frame; 3. fixing plate; 4. first recessed block; 5. first rotating rod; 6. fixing frame; 7. rotating groove; 8. sliding groove; 9. threaded rod; 10. sliding block; 11. connecting block; 12. fixing frame; 13. first spring; 14. lithium battery body; 15. first buffer block; 16. damper; 17. second buffer block; 18. second spring; 19. second recessed block; 20. second rotating rod; 21. square plate; 22. bolt; 23. limiting rod; 24. limiting groove; 25. protective door; 26. third spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] Example

[0024] See also Figure 1-Figure 3 The utility model provides a technical solution: a shockproof shell of a solid-state lithium battery, comprising a shell body 1, through which the lithium battery body 14 can be protected accordingly, a protective frame 2 is fixedly connected inside the shell body 1, a fixing plate 3 is fixedly connected to the outer surface of the protective frame 2, two first recessed blocks 4 are fixedly connected to the lower surface of the fixing plate 3, and a connecting rod is rotatably connected to the first recessed block 4, and the connecting rod comprises a first rotating rod 5 and a second rotating rod 20, one end of the first rotating rod 5 is rotatably connected to the first recessed block 4, and the other end is rotatably connected to the second rotating rod 20. In the embodiment of the present application, a connecting block 11 is provided at the rotational connection position of the first rotating rod 5 and the second rotating rod 20, and the first rotating rod 5 and the second rotating rod 20 are both rotatably connected to the connecting block 11. In other embodiments, the first rotating rod 5 and the second rotating rod 20 can also be rotatably connected through other connecting members according to needs, or the ends of the first rotating rod 5 and the second rotating rod 20 can be directly connected through a rotating shaft.

[0025] Reference Figure 3, a fixing frame 6 is also slidably arranged inside the shell body 1, and the sliding direction of the fixing frame 6 is perpendicular to the adjacent side wall 1. Two fixing frames 6 are provided, and a rotation groove 7 is provided on each of the two fixing frames 6, and the openings of the two rotation grooves 7 are arranged facing each other. Two connecting blocks 11 are arranged in the rotation groove 7, and are slidably arranged along the side walls of the rotation groove 7. A limiting groove 24 is also provided on the side wall of the rotation groove 7, and the first rotating rod 5 and the second rotating rod 20 respectively pass through the limiting grooves 24 on the two side walls of the rotation groove 7, and are rotationally connected to the fixing plate 3 or the shell body 1. The setting of the limiting groove 24 can effectively limit the movement of the connecting rod, thereby effectively reducing the possibility of a large movement of the protective frame 2.

[0026] A slide groove 8 is provided at the inner bottom of the rotating groove 7, and a threaded rod 9 is connected to the inner thread of the slide groove 8, and a slider 10 is fixedly connected to one end of the threaded rod 9. A third spring 26 is also provided at the inner bottom of the rotating groove 7, and the two ends of the third spring 26 are respectively in contact with the slider 10 and the connecting block 11. By rotating the threaded rod 9, the threaded rod 9 pushes the slider 10 to move, and the length of the third spring 26 is further adjusted, thereby adjusting the force of the spring on the connecting rod, and effectively alleviating the influence of spring fatigue on the battery. The setting of the slider 10 and the connecting block 11 can effectively stabilize the movement of the third spring 26.

[0027] In addition, the other end of the threaded rod 9 is fixedly connected to a square plate 21, which serves as a further fixation. The outer surface of the threaded rod 9 is threadedly connected to a bolt 22. By rotating the bolt 22 on the outer surface of the threaded rod 9, the length of the third spring 26 can be adjusted, which is convenient and quick.

[0028] A fixed frame 12 is fixedly connected to the surface of the fixed plate 3 away from the protective frame 2, and a first spring 13 is fixedly connected to the interior of the fixed frame 12. The other end of the first spring 13 extends out of the open end of the fixed frame 12 and is fixedly connected to the interior of the shell body 1. A second recessed block 19 is fixedly connected to the interior of the shell body 1, and the second rotating rod 20 is stabilized by the second recessed block 19 to rotate inside the limiting groove 24. The second recessed block 19 is rotatably connected to the interior of the second rotating rod 20, and the other end of the second rotating rod 20 is rotatably connected to the interior of the connecting block 11. A limiting rod 23 is fixedly connected to the interior of the shell body 1, and the outer surface of the limiting rod 23 is slidably connected to the first spring 13.

[0029] Furthermore, a plurality of first buffer blocks 15 are fixedly connected to the outer surface of the protective frame 2, a damper 16 is fixedly connected to the outer surface of the first buffer block 15, a second buffer block 17 is fixedly connected to the output end of the damper 16, after the first buffer block 15 is subjected to force, the damper 16 operates between the first buffer block 15 and the second buffer block 17, the outer surface of the second buffer block 17 is fixedly connected to the interior of the outer shell body 1, the inner surface of the second buffer block 17 is fixedly connected to a second spring 18, the force applied by the second spring 18 can facilitate the resetting of the damper 16, the other end of the second spring 18 is fixedly connected to the first buffer block 15, and a protective door 25 is provided on the upper surface of the outer shell body 1, and the protection of the outer shell body 1 is reinforced by the protective door 25.

[0030] To sum up: when the battery is hit, the force acting on the outer shell body 1 is transmitted to the inside of the outer shell body 1 through the side wall, and reacts with the internal spring to effectively buffer the impact. Under the action of the damper 16, the duration of continuous vibration of the spring is significantly shortened, thereby extending the life of the spring. At the same time, one or more springs inside the battery are connected to the adjusting part. By adjusting the adjusting part, the length of some springs can be adjusted, thereby ensuring the normal use of the spring and improving the impact of spring fatigue.

[0031] 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 shockproof housing for a solid-state lithium battery, characterized in that: The invention comprises a shell body (1), and a protective frame (2) arranged inside the shell body (1) for placing a battery; the outer wall of the protective frame (2) is rotatably connected to a connecting rod rotatably arranged in a V shape, and the end of the connecting rod away from the protective frame (2) is rotatably connected to the shell body (1); a third spring (26) is arranged at the rotatably connected part of the connecting rod, and the third spring (26) has a force on the connecting rod; and an adjusting member is arranged at the end of the third spring (26) away from the connecting rod.

2. The shockproof housing of a solid-state lithium battery according to claim 1, characterized in that: The adjusting member comprises a fixing frame (6) arranged between the protective frame (2) and the inner wall of the outer shell body (1); a rotation groove (7) is provided inside the fixing frame (6); the third spring (26) is arranged at the bottom of the rotation groove (7); a threaded rod (9) is threadedly connected to the bottom wall of the rotation groove (7); the threaded rod (9) abuts against an end of the third spring (26) away from the connecting rod.

3. The shockproof housing of a solid-state lithium battery according to claim 2, characterized in that: The connecting rod comprises a first rotating rod (5) and a second rotating rod (20), and the ends of the first rotating rod (5) and the second rotating rod (20) at both ends of the connecting rod are rotatably connected to the shell body (1) and the protective frame (2), respectively, and a limiting groove (24) is provided on the side wall of the rotating groove (7), and the first rotating rod (5) and the second rotating rod (20) are inserted into the limiting groove (24) and slidably arranged along the limiting groove (24).

4. The shockproof housing of a solid-state lithium battery according to claim 3, characterized in that: The other end of the third spring (26) is provided with a connecting block (11), the adjacent ends of the first rotating rod (5) and the second rotating rod (20) are rotatably connected, and the rotatably connected portion is rotatably connected to the connecting block (11).

5. The shockproof housing of a solid-state lithium battery according to claim 2, characterized in that: One end of the threaded rod (9) is connected to a slider (10), and the slider (10) is arranged between the third spring (26) and the threaded rod (9).

6. The shockproof housing of a solid-state lithium battery according to claim 1, characterized in that: The outer surface of the protective frame (2) is connected to a fixing frame (12), the inner bottom of the fixing frame (12) is connected to a first spring (13), and the other end of the first spring (13) is fixedly connected to the inside of the outer shell body (1).

7. The shockproof housing of a solid-state lithium battery according to claim 6, characterized in that: The inner side wall of the housing body (1) is also provided with a limiting rod (23), and the first spring (13) is slidably connected to the limiting rod (23).

8. The shockproof housing of a solid-state lithium battery according to claim 1, characterized in that: A damper (16) is provided on the outer surface of the protective frame (2), one end of the damper (16) is fixedly connected to the protective frame (2), and the other end is fixedly connected to the outer shell body (1). A second spring (18) is provided on the outer surface of the damper (16), and the two ends of the second spring (18) are respectively fixedly connected to the outer shell body (1) and the protective frame (2).

9. The shockproof housing of a solid-state lithium battery according to claim 1, characterized in that: A protective door (25) is provided on the upper surface of the housing body (1).

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