CN219371176U

CN219371176U - Explosion-proof small lithium battery

Info

Publication number: CN219371176U
Application number: CN202320386111.5U
Authority: CN
Inventors: 刘东方
Original assignee: Suizhou Hengbo Energy Co ltd
Current assignee: Suizhou Hengbo Energy Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-07-18
Anticipated expiration: 2033-03-06

Abstract

The utility model discloses an explosion-proof small lithium battery, which comprises a shell, wherein the inner surface of the shell is fixedly connected with a battery, the upper end of the battery is fixedly connected with a positive electrode, the inside of the shell is provided with a sealing ring, the inner surface of the sealing ring is fixedly connected with a sliding rod, the inside of the sliding rod is fixedly connected with a pressure valve, the lower surface of the sliding rod is fixedly connected with a limiting plate, and the lower surface of the limiting plate is fixedly connected with a conical rod. Above-mentioned structure, through the pressure valve that can go up and down, realize the device in the in-process of using if the condition that the battery appears the swell can warn in advance, avoids appearing bigger harm, and the condition of burning can release through the pressure valve if appears, avoids appearing the problem of explosion, and the casing can protect the battery simultaneously.

Description

Explosion-proof small lithium battery

Technical Field

The utility model relates to the technical field of explosion-proof lithium batteries, in particular to an explosion-proof small lithium battery.

Background

The explosion-proof technology is a novel battery product, and is a safe battery which is manufactured by adopting a high-safety-coefficient material and can effectively inhibit battery explosion. The safety characteristic of the explosion-proof lithium battery pack is the biggest characteristic. Due to improper use of the lithium battery, when the battery is in overshoot or other faults, a large amount of gas is generated in the battery due to chemical reaction, so that the internal pressure of the battery is rapidly increased, and explosion accidents occur. In order to prevent such a hazard, therefore, the battery is generally provided with an explosion-proof device. However, the existing explosion-proof device for lithium battery cannot perform early warning, that is, when the battery bulges, the battery cannot be found in time, and only the battery can be passively depressurized during combustion, and the battery can be found after search, so that the technical scheme provided by the utility model with the application number of CN202121416892.5 has the same problems.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and provides an explosion-proof small lithium battery, wherein through a pressure valve capable of lifting, if the battery bulges in the using process, the battery can be warned in advance, so that larger harm is avoided, if combustion occurs, the pressure can be relieved through the pressure valve, the explosion is avoided, and meanwhile, the battery can be protected by a shell.

In order to achieve the above object, the present utility model also provides a small-sized lithium battery having the above explosion protection, comprising:

the battery is fixedly connected to the inner surface of the shell, the anode is fixedly connected to the upper end of the battery, a sealing ring is arranged in the shell, a sliding rod is fixedly connected to the inner surface of the sealing ring, a pressure valve is fixedly connected to the inner part of the sliding rod, a limiting plate is fixedly connected to the lower surface of the sliding rod, and a conical rod is fixedly connected to the lower surface of the limiting plate.

According to the explosion-proof small lithium battery, the positive electrode extends to the outer side of the shell, and the shell is made of non-conductive metal.

According to the explosion-proof small lithium battery, the negative electrode is arranged at the lower end of the battery and extends to the outer side of the shell.

According to the explosion-proof small lithium battery, the output end of the pressure valve extends to the outer side of the shell, and the input end of the pressure valve extends to the lower side of the limiting piece.

According to the explosion-proof small lithium battery, the sealing ring is connected with the shell in a sliding manner, and damping is arranged between the sealing ring and the shell.

According to the explosion-proof small lithium battery, the side surface of the sealing ring is provided with damping.

According to the explosion-proof small lithium battery, a cavity is formed between the shell and the battery, and the conical rod extends to the inside of the cavity.

According to the explosion-proof small lithium battery, the diameter of the limiting piece is larger than that of the pressure valve.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described below with reference to the drawings and examples;

fig. 1 is a schematic view of the internal structure of an explosion-proof small lithium battery according to the present utility model;

fig. 2 is a schematic view of a part of the structure of an explosion-proof small lithium battery according to the present utility model;

FIG. 3 is a schematic view of a conical rod structure of an explosion-proof small lithium battery according to the present utility model;

fig. 4 is a schematic diagram of the overall structure of an explosion-proof small lithium battery according to the present utility model.

Legend description:

1. a housing; 2. a positive electrode; 3. a pressure valve; 4. a slide bar; 5. a seal ring; 6. a limiting piece; 7. a tapered rod; 8. a cavity; 9. and a battery.

Description of the embodiments

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

Referring to fig. 1-4, an explosion-proof small lithium battery of the embodiment of the utility model comprises a housing 1, a battery 9 is fixedly connected to the inner surface of the housing 1, a negative electrode is arranged at the lower end of the battery 9, the negative electrode extends to the outer side of the housing 1, a positive electrode 2 is fixedly connected to the upper end of the battery 9, the positive electrode 2 extends to the outer side of the housing 1, the housing 1 is non-conductive metal, a short circuit is avoided, a cavity 8 is formed between the housing 1 and the battery 9, a conical rod 7 extends to the inner side of the cavity 8, a sealing ring 5 is arranged in the housing 1, tightness of the device is increased, abnormal sliding of the conical rod 7 is avoided, the sealing ring 5 is in sliding connection with the housing 1, damping is arranged between the sealing ring 5 and the housing 1, a damping is arranged on the side surface of the sealing ring 5, a sliding rod 4 is fixedly connected to the inner surface of the sealing ring 5, a pressure valve 3 is fixedly connected to the inner side of the sliding rod 4 and is used for pressure relief when necessary, an output end of the pressure valve 3 extends to the outer side of the housing 1, an input end of the pressure valve 3 extends to the lower side of a limiting plate 6, the lower surface of the limiting plate 6 is fixedly connected to the lower surface of the sliding plate 6, the limiting plate 6 is used for limiting the diameter of the limiting plate 6 when the sliding plate is in the upper surface is in the diameter of the limiting plate is in the fixed and is in the diameter of the limiting plate 6.

Working principle: when the device is normally used, the upper surface of the sliding rod 4 is flush with the upper surface of the shell 1, the shell 1 performs necessary protection on the battery 9, when the battery 9 has a bulge problem, the battery 9 extrudes the conical rod 7, the conical rod 7 moves upwards, the bulge problem can be judged if inside can be judged by observing the position of the sealing ring 5, and when combustion occurs inside, the pressure valve 3 is opened when exceeding a threshold value, so that explosion is avoided.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. An explosion-proof small lithium battery, comprising:

casing (1), the internal surface fixedly connected with battery (9) of casing (1), the upper end fixedly connected with positive pole (2) of battery (9), the inside of casing (1) is provided with sealing washer (5), the internal surface fixedly connected with slide bar (4) of sealing washer (5), the inside fixedly connected with pressure valve (3) of slide bar (4), the lower fixed surface of slide bar (4) is connected with spacing piece (6), the lower fixed surface of spacing piece (6) is connected with conical rod (7).

2. The explosion-proof miniature lithium battery according to claim 1, characterized in that the positive electrode (2) extends to the outside of the housing (1), the housing (1) being of non-conductive metal.

3. An explosion-proof small lithium battery according to claim 1, characterized in that the lower end of the battery (9) is provided with a negative electrode, which extends to the outside of the housing (1).

4. The explosion-proof miniature lithium battery according to claim 1, characterized in that the output end of the pressure valve (3) extends to the outside of the housing (1), and the input end of the pressure valve (3) extends to the underside of the limiting plate (6).

5. An explosion-proof miniature lithium battery according to claim 1, characterized in that the sealing ring (5) is slidingly connected with the housing (1), and damping is provided between the sealing ring (5) and the housing (1).

6. An explosion-proof small lithium battery according to claim 1, characterized in that the side surfaces of the sealing ring (5) are provided with damping.

7. An explosion-proof miniature lithium battery according to claim 1, characterized in that a cavity (8) is formed between the housing (1) and the battery (9), the conical rod (7) extending into the interior of the cavity (8).

8. An explosion-proof miniature lithium battery according to claim 1, characterized in that the diameter of the limiting piece (6) is larger than the diameter of the pressure valve (3).