CN211507738U

CN211507738U - Integrated explosion-proof sheet of power lithium battery

Info

Publication number: CN211507738U
Application number: CN202020624891.9U
Authority: CN
Inventors: 王云峰
Original assignee: Suzhou Yidaneng New Energy Technology Co ltd
Current assignee: Suzhou Yidaneng New Energy Technology Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-09-15
Anticipated expiration: 2030-04-23

Abstract

The utility model provides an integrative explosion-proof piece of power lithium cell, this integrative explosion-proof piece of power lithium cell includes: a connecting sheet and a pressure relief device; the connecting piece is provided with an air outlet, and the pressure relief device is fixedly connected with the air outlet; the pressure relief device comprises a pressure relief seat fixedly connected with the air outlet, a plugging sheet slidably connected with the pressure relief seat, and a plurality of springs for connecting the pressure relief seat and the plugging sheet; wherein, the side wall of the pressure relief seat is provided with a plurality of strip-shaped holes; still include with the holding chamber of connection piece detachable. The utility model has the advantages that: the utility model can be connected with the lithium battery through the connecting sheet; through the arranged pressure relief device, the balance of air pressure in the lithium battery can be kept at high temperature; through the chamber that holds that sets up, can prevent that the piece of liquid in the lithium cell and lithium cell from getting into inside other machine parts.

Description

Integrated explosion-proof sheet of power lithium battery

Technical Field

The utility model relates to lithium cell technical field especially involves an integrative explosion-proof piece of power lithium cell.

Background

The appearance of batteries provides important power supply guarantee for our human life, entertainment and work. With the development of society and the advancement of human civilization, a primary battery is gradually eliminated due to the disadvantages of environmental pollution, low capacity, short service life and the like, and is replaced by a secondary battery having the advantages of no pollution, large capacity, long service life and the like, wherein the unique structure and performance of a lithium battery are widely applied to various fields, such as a notebook computer, a mobile power supply, an electric tool and the like, which are typical of the secondary battery.

But the lithium cell can cause inside adverse reaction because of external environment sometimes at the in-process that uses, lead to internal pressure to rise and appear the inflation, can explode even when serious, there is great potential safety hazard, consequently, can set up the safety that the explosion-proof piece used in order to guarantee the lithium cell on the current lithium cell, but the explosion-proof piece covers on lithium cell apron through one deck thin slice mostly, when the explosion-proof piece breaks when lithium cell internal pressure risees, the explosion-proof piece can produce the piece flying speed outwards effluvium, its piece falls to mechanical parts inside easily and causes the clearance inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a power lithium cell's integrative explosion-proof piece.

The problem of when lithium cell internal pressure risees explosion-proof piece and breaks, explosion-proof piece can produce the piece flying speed and outwards spill, its piece falls to the inside inconvenient problem of clearance that leads to the fact of machine part easily is solved.

The utility model discloses a realize through following technical scheme:

the utility model provides an integrative explosion-proof piece of power lithium cell, this integrative explosion-proof piece of power lithium cell includes: a connecting sheet and a pressure relief device;

the connecting piece is provided with an air outlet, and the pressure relief device is fixedly connected with the air outlet;

the pressure relief device comprises a pressure relief seat fixedly connected with the air outlet, a plugging sheet slidably connected with the pressure relief seat, and a plurality of springs for connecting the pressure relief seat and the plugging sheet; wherein, the side wall of the pressure relief seat is provided with a plurality of strip-shaped holes;

still include with the holding chamber of connection piece detachable.

Preferably, the inner wall of the pressure relief seat is provided with two opposite sliding grooves in the height direction, each sliding groove is internally provided with a sliding block in sliding connection, and the sliding blocks are fixedly connected with the plugging pieces.

Preferably, the plugging sheet is arranged in a concave shape, one side of the plugging sheet is fixedly connected with the plurality of springs, and the other side of the plugging sheet is fixedly connected with the rubber block.

Preferably, the connecting piece is provided with a first annular groove matched with the plugging piece at the position around the air outlet.

Preferably, the connecting sheet is further provided with a second annular groove, and the inner wall of the second annular groove is provided with an internal thread; an opening is formed in one side of the accommodating cavity, and external threads are formed in the outer wall, corresponding to the opening, of the accommodating cavity.

Preferably, the inner wall fixedly connected with a plurality of check valves that hold the chamber, just fixedly connected with pellicle in the outlet port.

The utility model has the advantages that: the utility model can be connected with the lithium battery through the connecting sheet; through the arranged pressure relief device, the balance of air pressure in the lithium battery can be kept at high temperature; through the chamber that holds that sets up, can prevent that the piece of liquid in the lithium cell and lithium cell from getting into inside other machine parts.

Drawings

Fig. 1 is a schematic structural diagram of an integrated explosion-proof sheet of a power lithium battery provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a pressure relief device of an integrated explosion-proof sheet of a power lithium battery according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a containing cavity of an integrated explosion-proof sheet of a power lithium battery provided by an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Firstly, in order to facilitate understanding of the integrated explosion-proof sheet of the power lithium battery provided by the embodiment of the application, an application scenario of the integrated explosion-proof sheet is explained first, and the integrated explosion-proof sheet of the power lithium battery provided by the embodiment of the application is used for providing an explosion-proof sheet capable of protecting the lithium battery; and when the pressure rose explosion-proof piece broke in the lithium cell among the prior art, explosion-proof piece can produce the piece flying speed and outwards spill, and its piece falls to mechanical parts inside easily and causes the clearance inconvenient. The following describes an integrated explosion-proof sheet of a power lithium battery provided in an embodiment of the present application with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an integrated explosion-proof sheet of a power lithium battery according to an embodiment of the present invention. According to fig. 1, the utility model provides an integrative explosion-proof piece of power lithium cell, this integrative explosion-proof piece of power lithium cell include connection piece 1, and the upside of this connection piece 1 is connected with pressure relief device 3, and the downside of connection piece 1 is connected with and holds chamber 7. When the lithium battery is used, the lithium battery is fixedly connected with the connecting sheet 1 and is positioned in the accommodating cavity 7, when the lithium battery is at high temperature, the lithium battery can heat air in the accommodating cavity 7, and the heated air expands, so that the pressure in the accommodating cavity 7 is increased, the pressure relief device 3 is opened, the heated air is discharged through the pressure relief device 3, and the lithium battery is cooled; when the lithium cell was destroyed, the liquid in lithium cell piece and the lithium cell can be stored and hold the intracavity 7 to prevent that the liquid in lithium cell piece and the lithium cell from getting into inside other machine parts.

Wherein, pressure relief device 3 can refer to fig. 2 when specifically setting up, and fig. 2 is the embodiment of the utility model provides a pressure relief device of an organic whole explosion-proof piece of power lithium cell's pressure relief device's schematic structure diagram. As can be seen from fig. 2, the connecting sheet 1 is provided with an air outlet 2; continuing to refer to fig. 2, the pressure relief device 3 includes a pressure relief seat 4 fixedly connected with the connecting sheet 1, two opposite sliding grooves 8 are formed in the inner wall of the pressure relief seat 4 along the height direction, a sliding block 9 is slidably connected in each sliding groove 8, the two sliding blocks 9 are fixedly connected with the same plugging sheet 5, when the plugging sheet 5 is specifically arranged, the plugging sheet 5 is arranged in a concave shape, one side of the plugging sheet 5 is fixedly connected with the pressure relief seat 3 through a plurality of springs 6 with certain elasticity, and the other side of the plugging sheet 5 is fixedly connected with a rubber block 10 matched with the air outlet 2; with continued reference to fig. 2, the connecting piece 1 is provided with a first annular groove 11 at a position around the air outlet 2, the first annular groove is matched with the blocking piece 5, and a semipermeable membrane 14 is fixedly connected in the air outlet 2, wherein the semipermeable membrane 14 only allows air to pass through but not liquid to pass through. When the utility model is used, the plugging sheet 5 is attached to the connecting sheet 1 under the action of the spring 6 in a normal state, at the moment, the edge of the plugging sheet 5 is inserted into the first annular groove 11, and the rubber block 10 is inserted into the air outlet hole 2, so that the air outlet hole 2 is sealed, and the utility model is closed; when the lithium cell heaies up, the lithium cell can heat the air that holds in the chamber 7, the air inflation after the heating, thereby make the pressure grow that holds in the chamber 7, the air that holds in the chamber 7 passes through venthole 2 and upwards pushes up plugging sheet 5 and rubber block 10, thereby make plugging sheet 5 upwards remove, thereby open venthole 2, thereby the hot-air that holds in the chamber 7 enters into pressure release seat 4, in order to make the hot-air that gets into in the pressure release seat 4 discharge, a plurality of bar holes can have been seted up at the lateral wall of pressure release seat 4, a plurality of bar holes and two 8 cross arrangement of spout, thereby the hot-air accessible bar hole that gets into in the pressure release seat 4 is arranged to the external world. Through the sliding groove 8 and the sliding block 9, the plugging sheet 5 can move more smoothly.

The holding cavity 7 can refer to fig. 3 when being specifically set up, and fig. 3 is a schematic structural diagram of the holding cavity of the integrated explosion-proof sheet of the power lithium battery provided by the embodiment of the present invention. According to fig. 3, the connecting sheet 1 is further provided with a second annular groove 12, the inner wall of the second annular groove 12 is provided with an internal threaded hole, one end of the accommodating cavity 7 is provided with an opening, the outer wall of the accommodating cavity 7 corresponding to the opening position is provided with an external thread, and the accommodating cavity 7 can be in threaded connection with the second annular groove 12, so that the accommodating cavity 7 can be conveniently detached, and the inner wall of the accommodating cavity 7 is fixedly connected with a plurality of one-way valves 13. When the lithium battery cooling device is used, when hot air in the accommodating cavity 7 is discharged through the pressure relief device 3, air with low external temperature enters the accommodating cavity 7 through the one-way valve 13, so that the lithium battery in the accommodating cavity 7 is cooled, and meanwhile, the pressure in the accommodating cavity 7 can be kept balanced; in addition, when the lithium cell receives the damage, the liquid in lithium cell piece and the lithium cell can be stored and hold intracavity 7 to prevent that the liquid in lithium cell piece and the lithium cell from getting into other machine parts, prevent that other machine parts from being damaged.

All parts in the utility model are the parts commonly used among the prior art.

In the above-mentioned embodiment, the integrative explosion-proof piece of power lithium cell that this application embodiment provided can prevent that the lithium cell temperature is too high when can protecting the lithium cell, receives when damaging at the lithium cell simultaneously, can prevent that the liquid in lithium cell piece and the lithium cell from getting into in other machine parts.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides an integrative explosion-proof piece of power lithium cell which characterized in that includes: a connecting sheet and a pressure relief device;

still include with the holding chamber of connection piece detachable.

2. The integrated explosion-proof sheet of the power lithium battery as claimed in claim 1, wherein the inner wall of the pressure relief seat is provided with two opposite sliding grooves along the height direction, each sliding groove is connected with a sliding block in a sliding manner, and the sliding block is fixedly connected with the plugging sheet.

3. The integrated explosion-proof sheet of the power lithium battery as claimed in claim 1, wherein the blocking sheet is concavely disposed, one side of the blocking sheet is fixedly connected with the plurality of springs, and the other side of the blocking sheet is fixedly connected with a rubber block.

4. The integrated explosion-proof sheet of the power lithium battery as claimed in claim 3, wherein the connecting sheet is provided with a first annular groove matched with the plugging sheet at the position around the air outlet.

5. The integrated explosion-proof sheet of the power lithium battery as claimed in claim 1, wherein the connecting sheet is further provided with a second annular groove, and the inner wall of the second annular groove is provided with internal threads; an opening is formed in one side of the accommodating cavity, and external threads are formed in the outer wall, corresponding to the opening, of the accommodating cavity.

6. The integrated explosion-proof sheet of the power lithium battery as claimed in claim 1, wherein a plurality of one-way valves are fixedly connected to the inner wall of the accommodating cavity, and a semipermeable membrane is fixedly connected to the inside of the air outlet.