Lithium battery pack with fireproof structure

Abstract

The lithium battery pack with the fireproof structure comprises a protection box, a square groove is formed in the edge of the top of the protection box, fireproof materials are fixedly installed in the square groove, a cover plate is movably installed on the top of the protection box, and a threaded rod is fixedly installed in the middle of the top end of the cover plate. Through arrangement of a threaded rod, a sliding plate, folded plates, a round block and a clamping block, when a worker needs to take down a cover plate to maintain an internal battery, the threaded rod can be rotated, so that the sliding plate can drive the round block to move backwards, the inner wall of a through hole is extruded, the two folded plates move oppositely, and the battery is maintained. Therefore, the clamping blocks can be pulled out from the interiors of the side grooves, the limiting effect on the cover plate is relieved, a worker can conveniently take down the cover plate to maintain or replace a battery in the protection box, the working efficiency is improved, and the protection box has the advantage that the worker can conveniently overhaul the battery in the protection box.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery packs, and particularly relates to a lithium battery pack with a fireproof structure. Background Technique

[0002] A battery pack refers to series and parallel connections. For a parallel-connected battery pack, each battery is required to have the same voltage, and the output voltage is equal to the voltage of one battery. A parallel-connected battery pack can provide stronger current. There are not many requirements for a series-connected battery pack. With the development of modern society, lithium batteries are widely used in hybrid vehicles, pure electric vehicles, communication base station energy storage, wind energy, solar energy storage and other fields due to their advantages of light weight, long cycle life, high discharge rate and no pollution. And existing lithium battery packs usually also have a fireproof structure to improve safety.

[0003] However, there are some problems in the prior art: In order to improve the use safety of the lithium battery pack, people usually seal the lithium battery in a protective box, and the sealing method is usually that workers use multiple groups of bolts to fix the cover plate on the protective box. However, when a single battery of the lithium battery pack fails and needs to be maintained or replaced, workers need to remove multiple groups of bolts to remove the cover plate, thus reducing work efficiency. Therefore, we propose a lithium battery pack with a fireproof structure. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a lithium battery pack with a fireproof structure, which facilitates workers to repair the internal battery by changing the loading and unloading method of the cover plate.

[0005] The utility model is realized as follows. A lithium battery pack with a fireproof structure includes a protective box. A square groove is opened at the edge of the top of the protective box. Fireproof material is fixedly installed inside the square groove. A cover plate is movably installed on the top of the protective box. A threaded rod is fixedly installed in the middle of the top of the cover plate. A sliding plate is threadedly sleeved on the outer surface of the threaded rod. Folding plates are movably installed on both sides of the top of the sliding plate. Through holes are opened at the top of the folding plates. A round block located inside the through holes is fixedly installed on the top of the sliding plate. Side grooves are opened at the top of both sides of the protective box. A clamping block located inside the side grooves is fixedly installed on the inner wall of the folding plate.

[0006] Optionally, a socket is fixedly installed in the middle of the front of the protective box. Fixing plates are fixedly installed on the front of the protective box on the upper and lower sides of the socket. Guide rods located on both sides of the socket are fixedly connected between the two fixing plates. A clamping plate is movably sleeved on the middle of the outer surface of the guide rod.

[0007] Optionally, a spring located between the fixing plate and the clamping plate is movably sleeved on the outer surface of the guide rod.

[0008] Optionally, a square plate is fixedly installed at the top of the inner wall of the protective box, and circular holes are evenly formed in the top of the square plate.

[0009] Optionally, handles are fixedly installed on both sides of the protective box, and a sheath is fixedly sleeved at the bottom of the outer surface of the handle, and the appearance of the sheath is cylindrical.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. By providing the threaded rod, the sliding plate, the folding plate, the round block and the clamping block, when the staff needs to remove the cover plate to maintain the internal battery, the threaded rod can be rotated, so that the sliding plate can drive the round block to move backward, and then the inner wall of the through hole will be squeezed, so that the two folding plates move away from each other, and then the clamping block can be withdrawn from the inside of the side groove, thus releasing the limiting effect on the cover plate, and then it is convenient for the staff to remove the cover plate to maintain or replace the battery inside the protective box, improving the work efficiency.

[0012] 2. By providing the clamping plate and the spring, when the staff needs to insert the plug into the socket to connect the power supply, first, the two clamping plates need to be moved away from each other. Due to the movement of the clamping plate, the spring will be in a compressed state. When the plug is inserted into the socket, due to the elastic recovery of the spring, the two clamping plates will be tightly clamped against the plug, so that the plug is more stable when inserted into the socket, and then the stability of the lithium battery pack continuously supplying power outward is improved.

[0013] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram provided by the present utility model;

[0015] Figure 2 is a schematic top view structure diagram provided by the present utility model;

[0016] Figure 3 is a schematic cross-sectional structure diagram inside the side groove provided by the present utility model;

[0017] Figure 4 is a schematic internal structure diagram of the protective box provided by the present utility model;

[0018] Figure 5 is Figure 1 a partial enlarged structural diagram at A in

[0019] In the figure: 1. protective box; 2. square groove; 3. fireproof material; 4. cover plate; 5. threaded rod; 6. sliding plate; 7. folding plate; 8. through hole; 9. round block; 10. side groove; 11. clamping block; 12. socket; 13. fixing plate; 14. guide rod; 15. clamping plate; 16. spring; 17. square plate; 18. handle; 19. sheath. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, a lithium battery pack with a fireproof structure provided by an embodiment of the utility model includes a protective box 1, a square groove 2 is opened at the edge of the top of the protective box 1, a fireproof material 3 is fixedly installed inside the square groove 2, a cover plate 4 is movably installed on the top of the protective box 1, a threaded rod 5 is fixedly installed in the middle of the top of the cover plate 4, a sliding plate 6 is threadedly sleeved on the outer surface of the threaded rod 5, folding plates 7 are movably installed on both sides of the top of the sliding plate 6, a through hole 8 is opened on the top of the folding plate 7, a round block 9 located inside the through hole 8 is fixedly installed on the top of the sliding plate 6, side grooves 10 are opened on the top of both sides of the protective box 1, and a clamping block 11 located inside the side groove 10 is fixedly installed on the inner wall of the folding plate 7.

[0022] When the staff needs to remove the cover 4 to maintain the internal battery, they can rotate the threaded rod 5 so that the sliding plate 6 can drive the round block 9 to move backward, which will squeeze the inner wall of the through hole 8, causing the two folding plates 7 to move away from each other, so that the folding plates 7 can drive the card block 11 to be pulled out from the inside of the side groove 10, thereby releasing the limiting effect on the cover 4, and then the staff can remove the cover 4 to maintain or replace the internal battery of the protective box 1, thereby improving work efficiency.

[0023] Furthermore, a socket 12 is fixedly installed in the middle of the front of the protective box 1, and fixed plates 13 located on the upper and lower sides of the socket 12 are fixedly installed on the front of the protective box 1. A guide rod 14 located on both sides of the socket 12 is fixedly connected between the two fixed plates 13, and a clamping plate 15 is movably sleeved in the middle of the outer surface of the guide rod 14.

[0024] Furthermore, the outer surface of the guide rod 14 is movably sleeved with a spring 16 located between the fixed plate 13 and the clamping plate 15. When the staff needs to insert the plug into the socket 12, they need to first move the two clamping plates 15 away from each other so that the spring 16 is in a compressed state. After the plug is inserted, due to the elastic force recovery effect of the spring 16, the two clamping plates 15 will tend to move toward each other, thereby clamping the plug to make it more stable when inserted into the socket 12.

[0025] Furthermore, a square plate 17 is fixedly installed at the top of the inner wall of the protection box 1, and round holes are evenly formed in the top of the square plate 17. By placing a single lithium battery in the round holes on the surface of the square plate 17, good limitation of the lithium battery can be achieved, thereby avoiding mutual collision and extrusion between the lithium batteries.

[0026] Furthermore, handles 18 are fixedly installed on both sides of the protection box 1, and a sheath 19 is fixedly sleeved at the bottom of the outer surface of the handle 18. The appearance of the sheath 19 is cylindrical. Since the sheath 19 is made of rubber and has a soft property, it can make the staff more comfortable when holding. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pack with a fireproof structure, comprising a protection box (1), characterized in that: The edge of the top of the protection box (1) is provided with a square groove (2), a fireproof material (3) is fixedly installed inside the square groove (2), a cover plate (4) is movably installed on the top of the protection box (1), a threaded rod (5) is fixedly installed in the middle of the top of the cover plate (4), a sliding plate (6) is threadedly sleeved on the outer surface of the threaded rod (5), folding plates (7) are movably installed on both sides of the top of the sliding plate (6), a through hole (8) is provided on the top of the folding plate (7), a round block (9) located inside the through hole (8) is fixedly installed on the top of the sliding plate (6), side grooves (10) are provided on the top of both sides of the protection box (1), and a clamping block (11) located inside the side groove (10) is fixedly installed on the inner wall of the folding plate (7).

2. A lithium battery pack with a fireproof structure according to claim 1, characterized in that: A socket (12) is fixedly installed in the middle of the front of the protection box (1), and fixed plates (13) are fixedly installed on the front of the protection box (1) at the upper and lower sides of the socket (12), and a guide rod (14) is fixedly connected between the two fixed plates (13) and located on both sides of the socket (12), and a clamping plate (15) is movably sleeved in the middle of the outer surface of the guide rod (14).

3. A lithium battery pack with a fireproof structure according to claim 2, characterized in that: The outer surface of the guide rod (14) is movably sleeved with a spring (16) located between the fixing plate (13) and the clamping plate (15).

4. The lithium battery pack with a fireproof structure according to claim 1, characterized in that: A square plate (17) is fixedly mounted on the top of the inner wall of the protection box (1), and circular holes are evenly opened on the top of the square plate (17).

5. The lithium battery pack with a fireproof structure according to claim 1, characterized in that: Handles (18) are fixedly mounted on both sides of the protection box (1), and a protective sleeve (19) is fixedly sleeved on the bottom of the outer surface of the handle (18), and the protective sleeve (19) has a cylindrical appearance.

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