Protection plate structure of lithium battery

Abstract

The utility model discloses a lithium battery protection plate structure which comprises a plate body, mounting holes are symmetrically formed in the two ends of the top end face of the plate body, a functional assembly is arranged in the plate body and comprises a mounting groove formed in the plate body, one end of the mounting groove is communicated with the outer side of the end of the plate body, and the other end of the mounting groove is communicated with the outer side of the end of the plate body. Mounting plates are symmetrically arranged in the mounting groove; through the designed functional assembly, the counterweight weight of the protection plate is conveniently reduced, so that the mass of the lithium battery after installation can be reduced, meanwhile, the use strength of protection can be increased, the protection plate is not prone to deformation when subjected to large pressure, and the practicability is good; through the designed protection assembly, the protection effect on the protection plate can be conveniently achieved, when the lithium battery is subjected to short-circuit explosion, the protection plate cannot be easily separated from the battery main body, meanwhile, the damage degree of the protection plate can be reduced, and the practical effect is good.

Description

Technical Field

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

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Their safety, specific capacity, self-discharge rate and performance-price ratio are all better than lithium ion batteries. Lithium batteries require a certain degree of protection through an external protective plate during installation. The existing lithium battery protection plate is present during use, and the weight of the protection plate is heavy, which will increase the weight of the lithium battery after installation. There are limitations during use and there is room for improvement. Utility Model Content

[0003] The purpose of the utility model is to provide a protection plate structure of a lithium battery to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a protective plate structure for a lithium battery, comprising a plate body, wherein mounting holes are symmetrically provided at both ends of the top surface of the plate body, and functional components are arranged inside the plate body.

[0005] The functional component includes a mounting groove opened inside the plate body, one end of the mounting groove leads to the outer side of the end of the plate body, a mounting plate is symmetrically arranged inside the mounting groove, a limiting plate is arranged on the surface of one end of the plate body, the limiting plate is located at the opening of the mounting groove, a fixing groove is symmetrically opened on the surface of one end of the plate body, a connecting spring is fixed inside the fixing groove, a connecting block is symmetrically installed on the limiting plate toward the top of the surface of the plate body, and one end of the connecting spring is fixedly connected to the connecting block.

[0006] As a further preferred embodiment of the present technical solution, a limiting magnetic strip is symmetrically installed on the surface of the limiting plate facing the plate body, and the surface of the limiting magnetic strip is magnetically connected to the end surface of the mounting plate.

[0007] As a further preferred embodiment of the present technical solution, the cross section of the limiting plate is in an inverted "L" shape, and the cross section of the connecting block is in a "T" shape when viewed from above.

[0008] As a further preferred embodiment of the present technical solution, a protective component is provided on the bottom end surface of the plate body, and the protective component includes a protective baffle plate which is arranged at the same height at the bottom of the plate body, and fixed bosses are symmetrically fixed at both ends of the bottom end surface of the plate body, and through grooves are symmetrically opened at the four corners of the surface of the protective baffle plate, and the protective baffle plate is limitedly engaged with the fixed bosses through the through grooves, and metal spring pieces are fixed at equal angles at the edges between the two protective baffle plates, one end of the fixed boss is sleeved with a mounting ring, and a limiting ring groove for limiting engagement of the mounting ring is opened on the side surface of one end of the fixed boss.

[0009] As a further preferred embodiment of the present technical solution, the cross-section of the metal spring sheet is "V"-shaped, and the metal spring sheet is welded and fixed to the protective baffle.

[0010] As a further preferred embodiment of the present technical solution, the inner diameter of the mounting ring is smaller than the diameter of the end surface of the plate body, and the mounting ring is made of rubber material.

[0011] The utility model provides a protection plate structure for a lithium battery, which has the following beneficial effects:

[0012] 1. The utility model is convenient for reducing the weight of the protection plate through the designed functional components, so that the weight of the lithium battery after installation can be reduced, and the strength of protection can be increased, so that the protection plate is not easily deformed when subjected to greater pressure, and has better practicality.

[0013] 2. The utility model facilitates the protection of the protection board through the designed protection component. When the lithium battery short-circuit explodes, the protection board will not be easily separated from the battery body. At the same time, the degree of damage to the protection board can also be reduced, and the practical effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the limiting plate in the utility model;

[0017] Figure 4 for Figure 2 A magnified schematic diagram of the middle A area;

[0018] In the figure: 1. plate body; 2. mounting hole; 3. mounting groove; 4. mounting plate; 5. limit plate; 6. fixing groove; 7. connecting spring; 8. protective baffle; 9. connecting block; 10. limit magnetic strip; 11. fixing boss; 12. through groove; 13. metal spring; 14. mounting ring; 15. limit ring groove. DETAILED DESCRIPTION

[0019] 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.

[0020] The utility model provides a technical solution: Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, a protective plate structure of a lithium battery includes a plate body 1, mounting holes 2 are symmetrically opened at both ends of the top surface of the plate body 1, a functional component is arranged inside the plate body 1, and the functional component includes a mounting groove 3 opened inside the plate body 1, one end of the mounting groove 3 leads to the outer side of the end of the plate body 1, and a mounting plate 4 is symmetrically arranged inside the mounting groove 3, a limiting plate 5 is arranged on the surface of one end of the plate body 1, and the limiting plate 5 is located at the opening of the mounting groove 3, and a fixing groove 6 is symmetrically opened on the surface of one end of the plate body 1, and a connecting spring 7 is fixed inside the fixing groove 6, and the limiting plate 5 faces A connecting block 9 is symmetrically installed on the top of the surface of the plate body 1, one end of the connecting spring 7 is fixedly connected to the connecting block 9, the cross-section of the limit plate 5 is an inverted "L" shape, and the top cross-section of the connecting block 9 is a "T" shape. The limit plate 5 is symmetrically installed on the surface of the plate body 1 with a limit magnetic strip 10, and the surface of the limit magnetic strip 10 is magnetically connected to the end surface of the mounting plate 4, which is convenient for reducing the counterweight weight of the protection plate without affecting the use strength of the protection plate, so that the protection plate is not easily deformed when subjected to greater pressure, which is convenient for extending the service life of the protection plate and has good practicality.

[0021] like Figure 2 and Figure 4 As shown, a protective component is provided on the bottom end surface of the plate body 1, and the protective component includes a protective baffle 8 which is arranged at the same height at the bottom of the plate body 1, and fixed bosses 11 are symmetrically fixed at both ends of the bottom end surface of the plate body 1, and through grooves 12 are symmetrically opened at the four corners of the surface of the protective baffle 8. The protective baffle 8 is limitedly engaged with the fixed bosses 11 through the through grooves 12, and metal springs 13 are fixed at equal angles at the edges between the two protective baffles 8. The cross-section of the metal spring 13 is "V"-shaped, and the metal spring 13 is welded and fixed to the protective baffle 8. A mounting ring 14 is sleeved on one end of the fixed boss 11, and a limiting ring groove 15 for limiting engagement of the mounting ring 14 is opened on the side surface of one end of the fixed boss 11. The inner diameter of the mounting ring 14 is smaller than the end surface diameter of the plate body 1, and the mounting ring 14 is made of rubber material, which is convenient for protecting the protective plate, and can reduce the degree of damage caused by the explosion of the lithium battery due to short circuit, and has a good practical effect.

[0022] The utility model provides a protection plate structure for lithium batteries, and the specific working principle is as follows: when the functional components are installed in the early stage of the utility model, the limiting plate 5 is first pulled to move on the surface of one end of the plate body 1. At this time, the limiting plate 5 will drive the connecting block 9 to move inside the fixing groove 6. At the same time, the connecting spring 7 inside the fixing groove 6 will be stretched by the connecting block 9 and generate a certain rebound force. Until the limiting plate 5 is moved to a suitable height, the two mounting plates 4 can be pushed to move into the inside of the mounting groove 3 respectively, so that the two mounting plates 4 can be limitedly engaged to the inside of the mounting groove 3, and then the mounting plate 4 can be loosened. At this time, the rebound force generated by the connecting spring 7 will act on the limiting plate 5 through the connecting block 9, so that the limiting plate 5 can be automatically reset, and the limiting magnetic strip 10 on the inner surface of the limiting plate 5 will be magnetically connected to the end surface of the mounting plate 4, at this time, the counterweight of the plate body 1 is reduced, and the weight of the lithium battery is reduced at the same time, the practicality is better, and the strength when the plate body 1 is installed and connected with the lithium battery in the later stage can also be improved, so that the plate body 1 is not easy to deform when subjected to a large pressure, which is convenient Prolong the service life of the plate body 1; in the early stage of installing the protective assembly, the utility model first pushes one of the protective baffles 8 to move toward the bottom end surface of the plate body 1, so that the protective baffle 8 can be limitedly engaged with the fixed protrusion 11 through the through groove 12, and then a plurality of metal springs 13 are fixed at the top edge of the protective baffle 8 at equal angles, so that one end of the metal spring 13 is welded and fixed to the bottom end surface of the plate body 1, and then repeats the above steps to install another protective baffle 8, so that the two protective baffles 8 are limitedly connected by the metal spring 13. Finally, the mounting ring 14 is sleeved on one end of the fixed boss 11, so that the mounting ring 14 can be limitedly engaged to the inside of the limiting ring groove 15, so that the mounting ring 14 can realize the limited installation of the protective baffle 8. When the lithium battery explodes due to a short circuit in the later stage, the two protective baffles 8 can protect the plate body 1, and the metal spring 13 between the two protective baffles 8 can generate a certain reaction force, which can reduce the impact force of the explosion on the plate body 1, and it is convenient to reduce the degree of damage to the plate body 1, and the practical effect is better.

[0023] 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 protection plate structure for a lithium battery, comprising a plate body (1), wherein mounting holes (2) are symmetrically provided at both ends of the top surface of the plate body (1), and the characteristics are: Functional components are arranged inside the plate body (1); The functional component comprises a mounting groove (3) opened inside the plate body (1), one end of the mounting groove (3) leads to the outer side of the end of the plate body (1), a mounting plate (4) is symmetrically arranged inside the mounting groove (3), a limiting plate (5) is arranged on the surface of one end of the plate body (1), the limiting plate (5) is located at the opening of the mounting groove (3), a fixing groove (6) is symmetrically opened on the surface of one end of the plate body (1), a connecting spring (7) is fixed inside the fixing groove (6), a connecting block (9) is symmetrically installed on the top of the surface of the limiting plate (5) facing the plate body (1), and one end of the connecting spring (7) is fixedly connected to the connecting block (9).

2. A lithium battery protection plate structure according to claim 1, characterized in that: The limiting plate (5) is symmetrically mounted with a limiting magnetic strip (10) on the surface facing the plate body (1), and the surface of the limiting magnetic strip (10) is magnetically connected to the end surface of the mounting plate (4).

3. The protective plate structure of a lithium battery according to claim 1, characterized in that: The cross section of the limiting plate (5) is in an inverted "L" shape, and the cross section of the connecting block (9) in a top view is in a "T" shape.

4. The protective plate structure of a lithium battery according to claim 1, characterized in that: The bottom end surface of the plate body (1) is provided with a protection component, and the protection component comprises a protection baffle (8) which is arranged at the same height at the bottom of the plate body (1), and fixed bosses (11) are symmetrically fixed at both ends of the bottom end surface of the plate body (1), and through grooves (12) are symmetrically opened at the four corners of the surface of the protection baffle (8), and the protection baffle (8) is limitedly engaged with the fixed boss (11) through the through grooves (12), and a metal spring sheet (13) is fixed at the same angle at the edge between the two protection baffles (8), and one end of the fixed boss (11) is sleeved with a mounting ring (14), and a limiting ring groove (15) for limiting engagement of the mounting ring (14) is opened on the side surface of one end of the fixed boss (11).

5. A lithium battery protection plate structure according to claim 4, characterized in that: The cross section of the metal spring sheet (13) is V-shaped, and the metal spring sheet (13) is fixed to the protective baffle (8) by welding.

6. A lithium battery protection plate structure according to claim 4, characterized in that: The inner diameter of the mounting ring (14) is smaller than the diameter of the end surface of the plate body (1), and the mounting ring (14) is made of rubber material.

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