CN211957769U

CN211957769U - Explosion-proof device of lithium battery

Info

Publication number: CN211957769U
Application number: CN202020464901.7U
Authority: CN
Inventors: 曹玉超; 付文科; 谢圣蒙; 胡志军; 周佳
Original assignee: Wuxi Hongyun Technology Co ltd
Current assignee: Beijing Yiben Zhengjing Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-11-17
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses a lithium battery explosion-proof equipment, including the battery case, be equipped with lithium cell in the battery case, lithium cell upper end is equipped with anodal and negative pole, is equipped with insulating cushion between lithium cell and the battery case inner wall, and lithium cell one end both sides all are equipped with a plurality of pressure-relief vents, and lithium cell one end both sides are close to pressure-relief vent upper end and a pair of explosion-proof diaphragm, the utility model discloses the beneficial effect who reaches is: can be operating or carrying out rechargeable effect that can play the inside and outside pressure of balance to the lithium cell through the explosion-proof diaphragm that sets up, explosion-proof hole and pressure relief vent to adopt spring and insulating cushion to support between battery case and the lithium cell body and can reduce the damage that external collision caused lithium cell body well, and the louvre and the miniature heating panel that set up can effectually discharge the heat that the lithium cell during operation distributed out, prevent that the lithium cell from being heated and seriously lead to the result of use to receive the influence.

Description

Explosion-proof device of lithium battery

Technical Field

The utility model relates to an explosion-proof equipment of lithium cell belongs to lithium cell protection technical field.

Background

The lithium battery has the advantages of light weight, small volume, large capacitance, high charging speed and the like, and is widely applied to various products including household appliances and electric vehicles. However, the battery has an excessive working current due to overcharge and overdischarge of the lithium battery or internal short circuit, so that the temperature of the battery is too high, high-temperature and high-pressure gas is generated, the pressure and the temperature inside the battery are high, and when the pressure and the temperature inside the battery exceed the bearing capacity of a battery packaging container, the packaging container is exploded, inflammable and explosive substances inside the battery flow out, and serious accidents such as explosion, fire and the like are caused.

At present, the lithium cell is difficult to avoid receiving the extrusion collision when installing on equipment and consequently leads to the lithium cell to receive the striking very easily and leads to the inside structure of lithium cell to receive the damage to thereby because the lithium cell can produce the expansion that the rifle increase can arouse the lithium cell of pressure that the heat leads to battery inside when using, can lead to the explosion seriously, and current rupture membrane quality differs, consequently hardly protects different lithium cells.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the lithium cell of prior art and difficult exempt from to receive the extrusion collision when installing on equipment and consequently lead to the lithium cell to receive the striking very easily and lead to the inside structure of lithium cell to receive the damage to thereby because the lithium cell can produce the expansion that the rifle increase can arouse the lithium cell of pressure of heat lead to the battery inside when using, can lead to the explosion seriously, and current rupture membrane quality differs, consequently hardly carry out the protection defect to different lithium cells, an explosion-proof equipment of lithium cell is provided.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a lithium battery explosion-proof equipment, including the battery case, be equipped with lithium cell in the battery case, lithium cell upper end is equipped with anodal and negative pole, be equipped with insulating cushion between lithium cell and the battery case inner wall, lithium cell one end both sides all are equipped with a plurality of pressure-relief vents, lithium cell one end both sides are close to pressure-relief vent upper end and a pair of explosion-proof diaphragm, and are a pair of be equipped with explosion-proof vent between the explosion-proof diaphragm, battery case one end both sides are close to explosion-proof diaphragm and are equipped with the filter screen, explosion-proof diaphragm one end fixed connection soft shell is kept away from to the filter.

As an optimal technical scheme of the utility model, anodal and negative pole are all through connecting wire and lithium cell body electric connection.

As an optimized technical scheme of the utility model, be equipped with a plurality of louvres on the battery case.

As an optimized technical scheme of the utility model, the battery case is equipped with the protecting crust with lithium cell body's positive pole and negative pole junction.

As an optimal technical scheme of the utility model, a plurality of springs of battery case inner wall fixed connection, spring one end and this body contact of lithium cell.

As an optimal technical scheme of the utility model, the battery case inner wall is equipped with a plurality of miniature heating panels, the heating panel is located insulating cushion.

The utility model discloses the beneficial effect who reaches is: can be operating or carrying out rechargeable effect that can play the inside and outside pressure of balance to the lithium cell through the explosion-proof diaphragm that sets up, explosion-proof hole and pressure relief vent to adopt spring and insulating cushion to support between battery case and the lithium cell body and can reduce the damage that external collision caused lithium cell body well, and the louvre and the miniature heating panel that set up can effectually discharge the heat that the lithium cell during operation distributed out, prevent that the lithium cell from being heated and seriously lead to the result of use to receive the influence.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a side sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of structure A of the present invention;

fig. 4 is an enlarged view of the structure B of the present invention.

In the figure: 1. a battery case; 2. an insulating soft pad; 4. a positive electrode; 5. a negative electrode; 6. a connecting wire; 7. a protective shell; 8. a lithium battery body; 9. heat dissipation holes; 10. a soft shell; 11. air holes are formed; 12. an explosion-proof membrane; 13. an explosion-proof hole; 14. a pressure relief vent; 15. A heat dissipation plate; 16. a spring; 17. and (4) a filter screen.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1-4, an explosion-proof device for lithium battery comprises a battery case 1, a lithium battery body 8 is arranged in the battery case 1, a positive electrode 4 and a negative electrode 5 are arranged at the upper end of the lithium battery body 8, an insulating cushion 2 is arranged between the lithium battery body 8 and the inner wall of the battery case 1, the insulating cushion 2 has a good anti-collision effect, a plurality of pressure relief holes 14 are arranged at both sides of one end of the lithium battery body 8, two sides of one end of the lithium battery body 8 are close to the upper ends of the pressure relief holes 14 and are provided with a pair of explosion-proof diaphragms 12, the explosion-proof diaphragms 12 play a good protection role, the internal pressure and the external pressure of the lithium battery body 8 can be adjusted and balanced through the pressure relief holes 14, an explosion-proof hole 13 is arranged between the pair of explosion-proof diaphragms 12, filter screens 17 are arranged at both sides of one end of the, the soft shell 10 is provided with a plurality of air holes 11, and the air holes 11 have good ventilation and heat dissipation effects.

Be equipped with a plurality of louvres 9 on battery case 1, louvre 9 plays radiating effect, battery case 1 is equipped with protecting crust 7 with lithium cell 8's anodal 4 and negative pole 5 junction, connecting wire 6 is located protecting crust 7, protecting crust 7 protects connecting wire 6, anodal 4 and negative pole 5 are all through connecting wire 6 and lithium cell 8 electric connection, 1 inner wall of battery case is equipped with a plurality of miniature heating panel 15, heating panel 15 is located insulating cushion 2, heating panel 15 can carry out the heat dissipation and handle, prevent that the inside high temperature of battery case 1, a plurality of springs 16 of 1 inner wall fixed connection of battery case, spring 16 one end and lithium cell 8 contact, protection through spring 16 can effectually prevent that external impact from causing great damage to lithium cell 8.

Specifically, the lithium battery body 8 can be operated or charged to balance internal and external pressure intensity through the arranged explosion-proof membrane 12, the explosion-proof hole 13 and the pressure relief hole 14, the damage to the lithium battery body 8 caused by external collision can be well reduced by adopting the spring 16 and the insulating cushion 2 to support the space between the battery shell 1 and the lithium battery body 8, the arranged heat dissipation hole 9 and the micro heat dissipation plate 15 can effectively discharge heat emitted by the lithium battery during working, the use effect is prevented from being influenced due to serious heating of the lithium battery body 8, the protective shell 7 arranged at the joint of the anode 4 and the cathode 5 can prevent the battery shell 1 from being burnt due to the exposure of a power supply, the filter screen 17 arranged at the position of the battery shell 1 close to the explosion-proof membrane 12 can prevent dust and fine impurities from entering the battery shell 1 to block the pressure relief hole 14, thereby damaging the lithium battery body 8.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An explosion-proof device for a lithium battery is characterized by comprising a battery case (1), wherein a lithium battery body (8) is arranged in the battery case (1), the upper end of the lithium battery body (8) is provided with an anode (4) and a cathode (5), an insulating soft cushion (2) is arranged between the lithium battery body (8) and the inner wall of the battery shell (1), both sides of one end of the lithium battery body (8) are provided with a plurality of pressure reducing holes (14), two sides of one end of the lithium battery body (8) are close to the upper end of the pressure reducing hole (14) and are provided with a pair of explosion-proof diaphragms (12), an explosion-proof hole (13) is arranged between the pair of explosion-proof diaphragms (12), two sides of one end of the battery shell (1) close to the explosion-proof membrane (12) are provided with filter screens (17), one end of the filter screen (17) far away from the explosion-proof membrane (12) is fixedly connected with the soft shell (10), and a plurality of air holes (11) are formed in the soft shell (10).

2. The explosion-proof device for lithium battery as claimed in claim 1, wherein the positive electrode (4) and the negative electrode (5) are electrically connected with the lithium battery body (8) through a connecting wire (6).

3. The explosion-proof device for lithium battery as claimed in claim 1, wherein the battery case (1) is provided with a plurality of heat dissipation holes (9).

4. The explosion-proof device for the lithium battery as claimed in claim 1, wherein a protective shell (7) is arranged at the joint of the battery shell (1) and the positive electrode (4) and the negative electrode (5) of the lithium battery body (8).

5. The explosion-proof device for the lithium battery as claimed in claim 1, wherein a plurality of springs (16) are fixedly connected to the inner wall of the battery case (1), and one end of each spring (16) is in contact with the lithium battery body (8).

6. The explosion-proof device for the lithium battery as claimed in claim 1, wherein the inner wall of the battery case (1) is provided with a plurality of micro heat dissipation plates (15), and the heat dissipation plates (15) are positioned in the insulating soft cushion (2).