CN210607343U

CN210607343U - Lithium titanate battery cover plate

Info

Publication number: CN210607343U
Application number: CN201921017442.1U
Authority: CN
Inventors: 卢奇; 揭仙宝; 陈蓓; 于方洲; 陈雁飞
Original assignee: Hebei Litong Auto Parts Co Ltd
Current assignee: Hebei Litong Auto Parts Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-05-22
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a lithium titanate battery cover plate. The cover plate comprises a cover plate, an outer cover, a spring, a compression column, a sealing plug, an inner cover and a top plate. The inner cover is welded and sealed with the top plate, and a through hole is formed in the middle of the inner cover. The sealing plug is pressed in the through hole of the inner cover by the pressing column and seals the through hole of the inner cover through the conical sealing surface. The spring is pressed down on the compression leg and is pushed up in the outer cover. The outer cover is screwed on the inner cover to press the spring, and the pressure of the spring can be adjusted. The center of the outer cover is provided with a vent hole and a vent groove, and the cover plate is stuck on the outer cover. The utility model discloses simple structure, spring pressure is adjustable, can effectively solve the inside bloated problem of lithium titanate battery. The cover plate is detached, electrolyte supplement of the lithium titanate battery can be realized, and the service life of the lithium titanate battery can be effectively prolonged.

Description

Lithium titanate battery cover plate

Technical Field

The utility model discloses be applied to the new forms of energy field, concretely relates to apron of lithium titanate battery.

Background

With the development of national science and technology and the progress of technology, new energy batteries have become a main research and development direction in the field of new energy. Among new energy batteries, lithium titanate batteries have high charge and discharge speed, can adapt to high-temperature and low-temperature environments, have high safety in the use process, and have become the main battery type selection in the new energy traffic field. However, lithium titanate batteries also have their own drawbacks, such as internal swelling that easily occurs during use, causing external deformation of the batteries, and also reducing the usability of the batteries. The traditional technical scheme is that an explosion-proof valve is added in a battery structure, when the gas in the battery reaches a certain degree, the explosion-proof valve of the battery explodes to release the gas in the battery, and the potential safety hazard of the lithium titanate battery can be reduced. However, once the explosion-proof valve is exploded, the performance of the battery is greatly reduced, the battery can hardly be used continuously, and the battery needs to be replaced by a new battery. The lithium titanate battery has higher cost, so the use cost of the lithium titanate battery is increased. In addition, after the lithium titanate battery is manufactured, the outer part of the lithium titanate battery is completely sealed in a welding mode, and the lithium titanate battery cannot be maintained, and once problems occur, such as electrolyte shortage in the inner part, the lithium titanate battery can only be scrapped.

Disclosure of Invention

The utility model provides a technical problem be: the lithium titanate battery cover plate adopts mechanical sealing, can realize high-pressure air release in the battery, is convenient to maintain and supplements electrolyte.

The utility model adopts the technical proposal that: the lithium titanate battery cover plate comprises a cover plate, an outer cover, a spring, a pressing column, a sealing plug, an inner cover and a top plate. The middle of the inner cover is provided with a through hole, the upper part of the inner cover is provided with an external thread, and the outer surface of the lower part of the inner cover is welded and sealed with the top plate. The sealing plug is pressed in the through hole of the inner cover by the pressing column and seals the through hole of the inner cover through the conical sealing surface. The spring is pressed down on the pressing column and pushes the outer cover upwards. The outer cover is provided with an internal thread matched with the external thread of the inner cover, and is screwed on the inner cover to press the spring, so that the pressure of the spring can be adjusted. The center of the outer cover is provided with a vent hole, and the upper surface of the outer cover is provided with a vent groove connected with the vent hole. The cover plate is stuck on the outer cover, so that foreign impurities are prevented from entering the cover plate through the vent holes, the cover plate is prevented from being adversely affected, and the vent groove is required to be communicated with the atmosphere.

The utility model has the advantages that: this lithium titanate battery cover plate simple structure, it is adjustable through spring pressure, can effectively solve the inside bloated problem of lithium titanate battery. The cover plate is detached, so that electrolyte supplement of the lithium titanate battery can be realized, and the service life of the lithium titanate battery can be effectively prolonged.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the structure of the outer cover;

wherein: 1-cover plate; 2-outer cover; 3-a spring; 4-pressing the column; 5-sealing plug; 6-inner cover; 7-top plate, 8-vent hole and 9-vent groove.

Detailed Description

The utility model discloses lithium titanate battery cover board includes cover plate 1, enclosing cover 2, spring 3, compression leg 4, sealing plug 5, inner cup 6, roof 7 etc. and figure 1 is its explosion diagram, and figure 2 is its schematic structure diagram. Wherein, the cover plate 1 and the sealing plug 5 are made of elastic non-metal materials, and the rest are made of metal materials.

The upper part of the inner cover 6 is provided with an external thread, the middle part is provided with a through hole, and the outer surface of the lower part is welded and sealed with the battery top plate 7. A step hole is processed in the center of the top plate 7, a flange matched with the top plate is processed on the outer surface of the inner cover 6, and the top plate and the inner cover are matched and then welded and sealed, so that the sealing effect is good. Sealing plug 5 is pressed in inner cup 6 bottom by compression leg 4, through the lower part of the sealed 6 through-holes of sealed inner cup of toper, and 3 lower edges of spring are pressed on compression leg 4, go up along the top at enclosing cover 2 lower surfaces, and enclosing cover 2 processing has the internal thread that matches with 6 external threads of inner cup, and enclosing cover 2 screws up on inner cup 6, pushes down spring 3. The spring 3 is in a compressed state, and the pressure column 4 can be pressed against the sealing plug 5 to realize sealing. The height of the spring 3 can be adjusted by rotating the position of the outer cover 2, thereby adjusting the stress of the compression column 4.

Fig. 3 is a schematic structural diagram of the outer cover 2, a vent hole 8 is processed in the center of the outer cover 2, a vent groove 9 is processed on the upper surface of the outer cover 2, the vent groove 9 is connected with the vent hole 8, and four vent grooves are formed in the embodiment. The cover plate 1 is pasted on the outer cover 2, so that the structure can be effectively prevented from being damaged by external sundries, the potential safety hazard caused by poor activity of the spring can be avoided, the vent groove 9 needs to be communicated with the atmosphere, and the pressure relief gas is kept smooth.

When the lithium titanate battery is used, gas is generated inside the lithium titanate battery, when the pressure of the gas exceeds the pressure of the spring, the sealing plug 5 is jacked up, and the gas inside the battery can flow into the through hole of the inner cover 6 and is discharged outside through the vent hole 8 of the outer cover 2 and the vent groove 9. Therefore, the air pressure in the lithium titanate battery is reduced, and when the internal air pressure is smaller than the pressure of the spring, the sealing plug 5 is pressed on the conical sealing surface of the inner cover 6 to realize sealing. Through this structure, just can effectively realize the inside exhaust of lithium titanate battery, go on automatically, the manifold cycles is favorable to strengthening the life of battery, improves the security that the battery used.

When the lithium titanate battery has the maintainability problems such as lack of electrolyte, the outer cover 2 can be unscrewed, the spring 3, the compression column 4 and the sealing plug 5 are disassembled, and then the electrolyte is injected into the battery through the through hole of the inner cover 6, so that the battery is maintained.

The utility model discloses lithium titanate battery cover plate simple structure, the cost of manufacture is low, and application scope is wide. The device can replace the seal valve on the lithium titanate battery cover plate, and can effectively solve the problem of internal flatulence of the lithium titanate battery. The cover plate can also realize the follow-up maintenance of the lithium titanate battery, the service life of the lithium titanate battery can be effectively prolonged, and the use cost of the lithium titanate battery is reduced.

Claims

1. The utility model provides a lithium titanate battery cover plate which characterized in that: comprises a cover plate (1), an outer cover (2), a spring (3), a compression leg (4), a sealing plug (5), an inner cover (6) and a top plate (7); the middle of the inner cover (6) is provided with a through hole, the upper part of the inner cover is provided with an external thread, and the outer surface of the lower part of the inner cover is welded and sealed with the top plate (7); the sealing plug (5) is pressed in the through hole of the inner cover (6) by the compression leg (4), and the through hole of the inner cover (6) is sealed by the conical sealing surface; the spring (3) is pressed down on the compression column (4) and pushes the outer cover (2) upwards; the outer cover (2) is provided with an internal thread matched with the external thread of the inner cover (6), the outer cover is screwed on the inner cover (6) to press the spring (3), and the center of the outer cover (2) is provided with a vent hole (8).

2. The cover plate for a lithium titanate battery as claimed in claim 1, wherein: the cover plate (1) is adhered to the upper surface of the outer cover (2), a vent groove (9) is machined in the upper surface of the outer cover (2), and the vent groove (9) is connected with the vent hole (8).