CN220604895U - Lithium battery - Google Patents

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery, which comprises a battery main body; the explosion-proof equipment inside the communication battery body is installed in the gomphosis of one side top of the battery body, the explosion-proof equipment includes the rectangle piece, set up the L type hole of intercommunication outside air in the rectangle piece, set up the inside recess of intercommunication battery body in the rectangle piece, the one-way square pipe of slidable mounting in the recess switching L type hole and recess intercommunication is through battery body, rectangle piece, L type hole, recess, spring, one-way square pipe and the logical groove that is equipped with, when the inside gas of battery body takes place the inflation excessively, the inside pressure increase extrusion one-way square pipe of battery body is slided in the recess by one-way square pipe promotion spring, when logical groove and L type hole coincidence, discharges the gas in the battery body and releases the pressure, can avoid the phenomenon that the explosion appears in the lithium cell.

Description

Lithium battery

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery.

Background

The cell can generate gas production phenomenon in the discharging use process, and because the cell is a closed shell, after the cell generates gas in a large amount, the cell shell can bulge and release gas at no place, and as the service life of the cell is prolonged, the gas production amount in the cell can be gradually increased and the internal air pressure can be increased. In order to avoid dangerous situations such as explosion of the battery cell, an explosion-proof valve is usually arranged on the battery cell. When the pressure of the generated gas in the battery cell or the pressure in the battery cell is in a micro-short circuit condition, the gas can burst the explosion-proof valve under the pressure effect when the pressure in the battery cell reaches the limit value, thereby achieving the purpose of exhausting, and reducing the possibility of fire and explosion of the battery cell in the mode.

When the existing lithium battery cell is exhausted through the explosion-proof valve, the internal pressure of the cell reaches a critical state, and at the moment, the explosion-proof valve is only exhausted through a single safety mechanism, so that risks such as blockage or faults of the explosion-proof valve are difficult to prevent, the situation that the explosion of the cell is caused by the blockage of the exhaust process is caused, and the risk prevention capability is weak.

Disclosure of Invention

The utility model aims to provide a lithium battery, so as to solve the problems that in the prior art, when the existing lithium battery cell is exhausted through an explosion-proof valve, the internal pressure of the cell reaches a critical state, and at the moment, the explosion-proof valve is only used as a single safety mechanism for exhausting, so that the explosion of the cell caused by blockage or failure and other risks of the explosion-proof valve are difficult to prevent, and the risk prevention capability is weak.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a lithium battery includes a battery body;

the explosion-proof equipment communicated with the inside of the battery body is embedded and installed at the top end of one side of the battery body, the explosion-proof equipment comprises a rectangular block, an L-shaped hole communicated with outside air is formed in the rectangular block, a groove communicated with the inside of the battery body is formed in the rectangular block, a single-pass square pipe communicated with the L-shaped hole and the groove is slidably installed in the groove, and explosion of a lithium battery can be prevented.

Preferably, the top end of the battery body is symmetrically provided with two electrodes communicated with the inside of the battery body, and the electrodes are used for forming the lithium battery body.

Preferably, a spring is arranged in the groove, one end of the spring is abutted against the side face of the groove, and the other end of the spring is abutted against the side face of the single-pass square tube, so that explosion of the lithium battery is prevented.

Preferably, the single-pass square tube is attached to one side of the L-shaped hole, and a through groove is formed in the single-pass square tube and used for discharging gas generated in the lithium battery.

Preferably, a circular ring for preventing the single-pass square tube from falling off is embedded and installed on one side of the rectangular block, one end of the single-pass square tube is abutted to the side face of the circular ring, and explosion of the lithium battery is prevented.

Preferably, a plurality of screws are equidistantly arranged on the outer edge surface of the circular ring around the axis of the circular ring, and one ends of the screws penetrate through the circular ring and extend into the rectangular block to form the explosion-proof equipment main body.

Compared with the prior art, the utility model has the beneficial effects that:

through the battery main part, rectangular block, L type hole, recess, spring, single logical side pipe and logical groove that are equipped with, when the inside gaseous too much expansion of battery main part takes place, the inside pressure increase extrusion single logical side pipe of battery main part is promoted the spring by single logical side pipe and is slided in the recess, when logical groove and L type hole coincidence, discharges the gas in the battery main part and carries out the pressure release, can avoid the phenomenon that the explosion appears in the lithium cell.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the explosion-proof apparatus of FIG. 1 according to the present utility model;

fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.

In the figure: 1. a battery main body; 101. an electrode; 2. an explosion-proof device; 201. rectangular blocks; 202. an L-shaped hole; 3. a groove; 301. a spring; 4. a single-pass square tube; 401. a through groove; 5. a circular ring; 501. and (5) a screw.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

In the following detailed description of the embodiments of the present utility model, the cross-sectional view of the device structure is not partially enlarged to a general scale for the convenience of description, and the schematic is merely an example, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1-3, there is shown: the embodiment is a preferred embodiment of the present technical solution, and a lithium battery includes a battery main body 1;

the explosion-proof equipment 2 communicated with the inside of the battery body 1 is embedded and installed at the top end of one side of the battery body 1, the explosion-proof equipment 2 comprises a rectangular block 201, an L-shaped hole 202 communicated with outside air is formed in the rectangular block 201, a groove 3 communicated with the inside of the battery body 1 is formed in the rectangular block 201, and a single-pass square tube 4 communicated with the opening and closing L-shaped hole 202 and the groove 3 is slidably installed in the groove 3.

As shown in fig. 1, the top end of the battery body 1 is symmetrically provided with two electrodes 101 communicating with the inside of the battery body 1;

as shown in fig. 2, a spring 301 is mounted in the groove 3, one end of the spring 301 abuts against the side surface of the groove 3, and the other end of the spring 301 abuts against the side surface of the single-pass square tube 4;

as shown in fig. 2, a through groove 401 is formed on one side of the single-pass square tube 4, which is attached to the L-shaped hole 202;

as shown in fig. 2 and 3, a circular ring 5 for preventing the single-pass square tube 4 from falling off is fitted to one side of the rectangular block 201, and one end of the single-pass square tube 4 abuts against the side surface of the circular ring 5;

as shown in fig. 3, a plurality of screws 501 are equidistantly arranged on the outer edge surface of the circular ring 5 around the axis of the circular ring, and one end of each screw 501 penetrates through the circular ring 5 and extends into the rectangular block 201;

in this embodiment, when the gas in the battery body 1 is excessively expanded, the pressure in the battery body 1 increases to squeeze the single-pass square tube 4, the single-pass square tube 4 pushes the spring 301 to slide in the groove 3, and when the through groove 401 is overlapped with the L-shaped hole 202, the gas in the battery body 1 is discharged to release the pressure, so that the explosion phenomenon of the lithium battery can be avoided.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A lithium battery includes a battery main body (1);

the method is characterized in that:

the explosion-proof equipment (2) communicated with the inside of the battery body (1) is embedded and installed at the top end of one side of the battery body (1), the explosion-proof equipment (2) comprises a rectangular block (201), an L-shaped hole (202) communicated with outside air is formed in the rectangular block (201), a groove (3) communicated with the inside of the battery body (1) is formed in the rectangular block (201), and a single-pass square tube (4) communicated with the L-shaped hole (202) and the groove (3) is slidably installed in the groove (3).

2. A lithium battery according to claim 1, wherein: two electrodes (101) communicated with the inside of the battery body (1) are symmetrically arranged at the top end of the battery body (1).

3. A lithium battery according to claim 1, wherein: a spring (301) is arranged in the groove (3), one end of the spring (301) abuts against the side face of the groove (3), and the other end of the spring (301) abuts against the side face of the single-pass square tube (4).

4. A lithium battery according to claim 1, wherein: a through groove (401) is formed in one side, attached to the L-shaped hole (202), of the single-pass square tube (4).

5. A lithium battery according to claim 1, wherein: one side of the rectangular block (201) is embedded with a circular ring (5) for preventing the single-pass square tube (4) from falling off, and one end of the single-pass square tube (4) is abutted against the side surface of the circular ring (5).

6. A lithium battery according to claim 5, wherein: a plurality of screws (501) are equidistantly arranged on the outer edge surface of the circular ring (5) around the axis of the circular ring, and one end of each screw (501) penetrates through the circular ring (5) and extends into the rectangular block (201).