CN205992561U

CN205992561U - The cover plate of electrokinetic cell and electrokinetic cell

Info

Publication number: CN205992561U
Application number: CN201620056521.3U
Authority: CN
Inventors: 邱宜升
Original assignee: Shenzhen Kedali Industry Co ltd
Current assignee: Shaanxi Keda Hardware & Plastic Co Ltd
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2017-03-01
Anticipated expiration: 2026-01-21

Abstract

This utility model is related to a kind of cover plate of power battery and electrokinetic cell, and wherein cover plate of power battery includes：Coping plate, positive terminal, negative terminal and roll-over valve；Described positive terminal, described negative terminal and described roll-over valve are assemblied on described coping plate；Described positive terminal is electrically connected with described coping plate; insulation assembling between described negative terminal and described coping plate; described roll-over valve comprises the conductive convex closure with overcurrent protection function; described roll-over valve is flipped up so that conductive convex closure compresses upwards to turn on positive terminal and negative terminal under the internal hyperbar of electrokinetic cell.The cover plate of above-mentioned electrokinetic cell improves the safety of battery use.

Description

The cover plate of electrokinetic cell and electrokinetic cell

Technical field

This utility model is related to the technical field of lithium ion battery, more particularly to a kind of cover plate of electrokinetic cell And electrokinetic cell.

Background technology

Electrokinetic cell is the important component part of new forms of energy battery, and electrokinetic cell keeps sending out of new-energy automobile in check Exhibition, the safety of battery and Practical Performance are its particularly important guarantees, the safety guard master of electrokinetic cell To adopt safe roll-over valve, this safe roll-over valve, when gross chemistry reaction occurs leading in inside battery electrolyte, is produced After overturning under raw hyperbar, both positive and negative polarity turns on so that electric fuse blows power-off in time, and battery open circuit is guaranteeing The safe handling of battery.But easily roll-over valve quilt short-circuit immediate current is excessive in traditional roll-over valve Situation about blowing, causes roll-over valve disabler.

Utility model content

Based on this it is necessary to be directed to above-mentioned technical problem, provide a kind of electrokinetic cell that can improve safety Cover plate and electrokinetic cell.

A kind of cover plate of electrokinetic cell, including：Coping plate, positive terminal, negative terminal and roll-over valve；Described Positive terminal, described negative terminal and described roll-over valve are assemblied on described coping plate；Described positive terminal with described Coping plate electrically connects, insulation assembling between described negative terminal and described coping plate, and described roll-over valve comprises to have The conductive convex closure of overcurrent protection function, described roll-over valve is flipped up under the internal hyperbar of electrokinetic cell, makes Obtain conductive convex closure to compress upwards to turn on positive terminal and negative terminal.

Wherein in an embodiment, described roll-over valve is also included containing tipping line, and described tipping line is led with described Electric convex closure is electrically connected with, and described tipping line is to carry out punching press to described coping plate and formed around described conductive stud The annular indentation of bag.

Wherein in an embodiment, also include resistance bolck, described resistance bolck be located at positive terminal and coping plate it Between, described positive terminal is passed through described resistance bolck and is electrically connected with coping plate.

Wherein in an embodiment, also include cathode conductive film, described cathode conductive film is located at roll-over valve Top is simultaneously isolated with described roll-over valve, and described cathode conductive film one end is electrically connected with negative terminal, cathode conductive film The other end conductive with conductor convex closure when described roll-over valve is flipped up conflict so that positive terminal and negative terminal Conducting.

Wherein in an embodiment, in generally circular in shape, the oval and square of described roll-over valve A kind of.

Wherein in an embodiment, also include explosion-proof valve, described explosion-proof valve is arranged on described coping plate.

A kind of electrokinetic cell, described electrokinetic cell includes the cover plate of described electrokinetic cell.

The cover plate of above-mentioned electrokinetic cell and electrokinetic cell, the conductive convex closure in the roll-over valve of electrokinetic cell has Overcurrent protection, roll-over valve is flipped up making the high current producing in a flash of positive terminal and negative terminal conducting It is difficult to blow conductive convex closure so that roll-over valve can continue to keep normal work to burn until the electric fuse of electrokinetic cell Have no progeny power-off, the cover plate of therefore above-mentioned electrokinetic cell improves the safety of battery use.

Brief description

Fig. 1 is the overall structure diagram of the cover plate of electrokinetic cell in an embodiment；

Fig. 2 is the structural representation of negative terminal side on the cover plate of electrokinetic cell in another embodiment；

Fig. 3 is the cross-sectional view of oval roll-over valve in an embodiment；

Fig. 4 is the top view of Fig. 3 ellipse roll-over valve；

Fig. 5 is the cross-sectional view of circular roll-over valve in another embodiment；

Fig. 6 is the top view of Fig. 5 circle roll-over valve.

Specific embodiment

For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is carried out more comprehensively Description.Preferred embodiment of the present utility model is given in accompanying drawing.But, this utility model can be to be permitted How different forms is realizing however it is not limited to embodiment described herein.On the contrary, providing these enforcements The purpose of example is to make the understanding to disclosure of the present utility model more thoroughly comprehensive.

Unless otherwise defined, all of technology used herein and scientific terminology with belong to of the present utility model The implication that those skilled in the art are generally understood that is identical.Institute in description of the present utility model herein The term using is intended merely to describe the purpose of specific embodiment it is not intended that limiting this utility model.

In one embodiment, with reference to Fig. 1 and Fig. 2, a kind of cover plate of the electrokinetic cell providing, including：Top Cover plate 3, positive terminal 1, negative terminal 8 and roll-over valve 6；Described positive terminal 1, described negative terminal 8 and Described roll-over valve 6 is assemblied on described coping plate 3；Described positive terminal 1 is electrically connected with described coping plate 3, Insulation assembling between described negative terminal 8 and described coping plate 3, described roll-over valve 6 comprises with overcurrent protection The conductive convex closure 62 of function, described roll-over valve 6 is flipped up so that leading under the internal hyperbar of electrokinetic cell Electric convex closure 62 compresses upwards to turn on positive terminal and negative terminal.

In the present embodiment, when abnormal chemical reactions in the electrolyte within electrokinetic cell, will produce substantial amounts of Gas, when the air pressure within when electrokinetic cell exceedes default threshold value, roll-over valve will be flipped up so that positive and negative Pole turns on, so that the electric fuse of electrokinetic cell blows the generation avoiding electrokinetic cell harm in time.

The cover plate of above-mentioned electrokinetic cell, the conductive convex closure in the roll-over valve of electrokinetic cell has overcurrent protection, Roll-over valve is flipped up positive terminal and is difficult to blow conductive stud with the high current producing in a flash of negative terminal conducting Bag is so that roll-over valve can continue to keep normal work power-off after the blowout of electrokinetic cell, therefore The cover plate of above-mentioned electrokinetic cell improves the safety of battery use.

In one embodiment, with reference to Fig. 2, the cover plate of electrokinetic cell, roll-over valve also includes containing tipping line 61, Described tipping line 61 is electrically connected with described conduction convex closure 62, and described tipping line 61 is to enter in described coping plate Row punching press and formed around described conduction convex closure 62 annular indentation.In the present embodiment, roll-over valve and coping plate It is integrated.

In another embodiment, the tipping line of described roll-over valve is welded on described coping plate.

In one embodiment, with reference to Fig. 1, the cover plate of electrokinetic cell also includes resistance bolck 2, described resistance bolck 2 are located between positive terminal 1 and coping plate 3, and described positive terminal 1 passes through described resistance bolck 2 and coping plate 3 electricity Property connect.

In one embodiment, with reference to Fig. 1, the cover plate of electrokinetic cell also includes cathode conductive film 7, described negative Pole conducting strip 7 is located at the top of roll-over valve 6 and is isolated with described roll-over valve 6, described cathode conductive film 7 one End is electrically connected with negative terminal 8, the other end of cathode conductive film 8 when described roll-over valve 6 is flipped up with lead Body convex closure 62 conductive contact is so that positive terminal 1 is turned on negative terminal 8.

In one embodiment, with reference to Fig. 3 and Fig. 4, roll-over valve be shaped as ellipse.

In another embodiment, with reference to Fig. 5 and Fig. 6, roll-over valve generally circular in shape.

The example of roll-over valve shape in other embodiments, roll-over valve can also be foursquare, merely just List the example of several roll-over valve shapes, here is not limited to the shape of roll-over valve.

In one embodiment, with reference to Fig. 1, the cover plate of electrokinetic cell also includes explosion-proof valve 4, described explosion-proof valve 4 are arranged on described coping plate.In the present embodiment, explosion-proof valve is dropped by the timely gas discharging electrokinetic cell Low pressure, prevents electrokinetic cell from producing blast because of hyperbar.

In one embodiment, there is provided a kind of electrokinetic cell including above-mentioned cover plate.In the present embodiment, move Above-mentioned cover plate is provided with power battery.

Above example only have expressed several embodiments of the present utility model, and its description is more concrete and detailed, But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that for this For the those of ordinary skill in field, without departing from the concept of the premise utility, if can also make Dry deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model patent Protection domain should be defined by claims.

Claims

1. a kind of cover plate of electrokinetic cell is it is characterised in that include：Coping plate, positive terminal, negative terminal with And roll-over valve；Described positive terminal, described negative terminal and described roll-over valve are assemblied on described coping plate；Institute State positive terminal to electrically connect with described coping plate, between described negative terminal and described coping plate, insulation assembling, described Roll-over valve comprises the conductive convex closure with overcurrent protection function, and described roll-over valve is in the internal hyperbar of electrokinetic cell Under be flipped up so that conductive convex closure compresses upwards to turn on positive terminal and negative terminal.

2. the cover plate of electrokinetic cell according to claim 1 is it is characterised in that described roll-over valve is also wrapped Include containing tipping line, described tipping line is electrically connected with described conduction convex closure, and described tipping line is to described top cover Piece carries out punching press and forms the annular indentation around described conduction convex closure.

3. the cover plate of electrokinetic cell according to claim 1 is it is characterised in that also include resistance bolck, Described resistance bolck is located between positive terminal and coping plate, and described positive terminal passes through described resistance bolck and coping plate electricity Property connect.

4. the cover plate of electrokinetic cell according to claim 1 is it is characterised in that also include negative conductive Piece, described cathode conductive film is located at the top of roll-over valve and is isolated with described roll-over valve, described cathode conductive film One end is electrically connected with negative terminal, and the other end of cathode conductive film is convex with conductor when described roll-over valve is flipped up Bag is conductive to conflict so that positive terminal is turned on negative terminal.

5. the cover plate of electrokinetic cell according to claim 1 is it is characterised in that the shape of described roll-over valve Shape is one of circular, oval and square.

6. the cover plate of electrokinetic cell according to claim 1 is it is characterised in that also include explosion-proof valve, Described explosion-proof valve is arranged on described coping plate.

7. a kind of electrokinetic cell is it is characterised in that described electrokinetic cell is included as described in claim 1 to 6 The cover plate of electrokinetic cell described in any one.