CN205666260U - Power battery top cap and power battery thereof - Google Patents
Power battery top cap and power battery thereof Download PDFInfo
- Publication number
- CN205666260U CN205666260U CN201620548486.7U CN201620548486U CN205666260U CN 205666260 U CN205666260 U CN 205666260U CN 201620548486 U CN201620548486 U CN 201620548486U CN 205666260 U CN205666260 U CN 205666260U
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- Prior art keywords
- connecting portion
- conducting strip
- electrokinetic cell
- top cover
- hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a lithium ion battery produces technical field, especially relates to a power battery top cap and power battery thereof. The power battery top cap includes the top cap piece, first electrode unit and second electrode unit, be provided with upset piece connecting hole and integrated into one piece's first connecting portion on the top cap piece, the first electrode unit is including the upset piece, conducting strip and insulating part, be provided with second connecting portion and conducting strip connecting portion on the insulating part, the sealed upset piece connecting hole of upset piece, the conducting strip is located the below of upset piece, and be connected with upset piece electricity, the below at the top cap piece is fixed through the first connecting portion and the cooperation of second connecting portion to the insulating part, the conducting strip pass through the conducting strip connecting portion with the top cap piece is insulating fixed. Power battery includes the power battery top cap. The power battery that this application provided can effectively prevent conducting strip breaking occur, the perhaps deformation of becoming invalid in the use.
Description
Technical field
The application relates to lithium ion battery production technical field, particularly relates to a kind of electrokinetic cell top cover and power current thereof
Pond.
Background technology
For EV duricrust battery, in order to solve to overcharge problem, the commonly used scheme of industry is, cuts before battery core loses efficacy
Power-off pond major loop, prevents battery from continuing charging to ensure cell safety.
Currently for square duricrust battery, some employing CID (failure of current structure).That is, have one at positive pole major loop
Individual Pneumatic turnover sheet and integrated CID are in the conducting strip of one.Conducting strip surrounding and naked cell polar ear pass through to be welded to connect, conducting strip
CID part with rotating sheet by being welded to connect in one, rotating sheet and positive terminal are by being weldingly connected a conduct current positive pole
Terminal.
Working as over-charging of battery, air pressure inside increases, and rotating sheet overturns thus pulls apart CID, makes rotating sheet disconnect with conducting strip.
For in theory, as long as conducting strip and rotating sheet or the positive terminal that is connected with rotating sheet have certain interval, work as CID
Just major loop can be disconnected after pulling apart.But, be previously noted conducting strip and CID and be integrated in one, then by welding with
Rotating sheet is fixed, and bottom conducting strip, surrounding also to weld naked cell polar ear.
All can not be made the strongest it is known that to promote rotating sheet to pull apart CID, rotating sheet and CID under certain air pressure
Strong.The most fragile.The most integrated CID connects rotating sheet on the conducting strip of one, and the naked cell polar ear of lower company, if do not had
Have other parts auxiliary fixing, then normal assemble and use during easily after fracture failure, or deformation conducting strip with turn over
Rotor or coping plate conducting.
In view of this, we have must design a integrated CID structure in one conducting strip fixed structure, can rise fix
Effect and insulating effect, the most as much as possible increase inside battery utilizes space.
Utility model content
This application provides a kind of electrokinetic cell top cover and electrokinetic cell thereof, it is possible to be not take up inside too much electrokinetic cell
Conducting strip is firmly fixed in the case of space.
The first aspect of the application provides a kind of electrokinetic cell top cover, including
Coping plate, the first electrode unit and the second electrode unit,
Rotating sheet connecting hole and integrated first connecting portion it is provided with on described coping plate,
Described first electrode unit includes rotating sheet, conducting strip and insulating part, described insulating part is provided with second even
Connect portion and conducting strip connecting portion,
Described rotating sheet seals described rotating sheet connecting hole, and described conducting strip is positioned at the lower section of described rotating sheet, and with institute
State rotating sheet electrical connection,
Described first connecting portion protrudes the lower surface of described coping plate, and described insulating part passes through described first connecting portion and institute
The cooperation stating the second connecting portion is fixed on the lower section of described coping plate,
Described conducting strip is fixing with the insulation of described coping plate by described conducting strip connecting portion.
Preferably, described second connecting portion is through hole, and described first connecting portion is blocked described through hole by described lower section.
Preferably, described second connecting portion is up-small and down-big shoulder hole.
Preferably, described first connecting portion is rivet, and described rivet is fixed through described through hole and with the riveting of described through hole.
Preferably, described first connecting portion is provided with fixture block away from one end of described coping plate, described fixture block and described the
Two connecting portions connect and fix.
Preferably, described second connecting portion is clamping heavy stand, and described clamping heavy stand is positioned at the edge of described insulating part.
Preferably, described second connecting portion is draw-in groove.
Preferably, described second connecting portion is bar hole, is perpendicular in the cross section of its length direction at described bar hole, its
The size of bottom is more than the size on top.
Preferably, described conducting strip connecting portion is draw-in groove, and the edge card of described conducting strip is in described draw-in groove.
The second aspect of the application provides a kind of electrokinetic cell, including described electrokinetic cell top cover.
The technical scheme that the application provides can reach following beneficial effect:
Electrokinetic cell provided herein, by improving the structure of coping plate and insulating part, enables the two firm
Ground connects, and also makes also to be firmly attached between conducting strip and insulating part simultaneously, thus prevents conducting strip to be filled with in normal group and make
There is the problem of fracture failure because of self displacement during with, and the electrokinetic cell shared by this attachment structure is internal empty
Between the most less.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this
Application.
Accompanying drawing explanation
The unitary side profile of the electrokinetic cell top cover that Fig. 1 is provided by the embodiment of the present application；
The local of part A in the first the concrete structure corresponding diagram 1 of the electrokinetic cell top cover that Fig. 2 is provided by the present embodiment
Structure for amplifying schematic diagram；
The local of part A in the second concrete structure corresponding diagram 1 of the electrokinetic cell top cover that Fig. 3 is provided by the present embodiment
Structure for amplifying schematic diagram；
The local of part A in the third concrete structure corresponding diagram 1 of the electrokinetic cell top cover that Fig. 4 is provided by the present embodiment
Structure for amplifying schematic diagram；
The local of part A in 4th kind of concrete structure corresponding diagram 1 of the electrokinetic cell top cover that Fig. 5 is provided by the present embodiment
Structure for amplifying schematic diagram.
Reference:
10-coping plate；
100-the first connecting portion；
101-rotating sheet connecting hole；
20-the first electrode unit；
200-rotating sheet；
201-conducting strip；
202-insulating part；
202a-the second connecting portion；
202b-conducting strip connecting portion；
30-the second electrode unit.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the application
Example, and for explaining the principle of the application together with description.
Detailed description of the invention
Below by specific embodiment and combine accompanying drawing the application is described in further detail.Described in literary composition
"front", "rear", "left", "right", " on ", D score with the laying state of the electrokinetic cell top cover in accompanying drawing and electrokinetic cell thereof be all
Reference.
As it is shown in figure 1, the embodiment of the present application provides a kind of electrokinetic cell top cover, including coping plate the 10, first electrode list
Unit 20 and the second electrode unit 30.Coping plate 10 is the agent structure of top cover, needs to use conductive material to make, such as aluminum
Sheet.Coping plate 10 is provided with the first connecting portion 100 and rotating sheet connecting hole 101.First electrode unit 20 and second
Electrode unit 30 is respectively two output stages of electrokinetic cell, and each output stage pole lug with naked battery core respectively is electrically connected
Connect.In the present embodiment, the first electrode unit 20 typically can be as the positive pole of electrokinetic cell, the second electrode unit 30 then conduct
The negative pole of electrokinetic cell.
As Fig. 2 is to shown in 5, and the second electrode unit 30 in the present embodiment is connected with coping plate insulation.First electrode unit
20 include rotating sheet 200, conducting strip 201 and insulating part 202.Wherein, rotating sheet 200 seals fixing rotating sheet connecting hole
101, conducting strip 201 is positioned at the lower section of rotating sheet 200, and electrically connects with rotating sheet 200, and the mode of electrical connection is by rotating sheet
The middle part of 200 and the CID on conducting strip 201 are by welding or alternate manner is fixed together.
Rotating sheet 200 can overturn when electrokinetic cell internal pressure exceedes reference pressure and depart from and conducting strip 201
Status of electrically connecting.
Rotating sheet 200 seals fixing rotating sheet connecting hole 101, can be that rotating sheet 200 edge is welded on rotating sheet connection
The top in hole 101 or bottom (as shown in Figure 1), as long as this rotating sheet connecting hole 101 can be sealed.Certainly, rotating sheet is also
Can be one-body molded with coping plate, i.e. coping plate stamps out rotating sheet in rotating sheet connection hole, and reversal film is placed in rotating sheet even
Connect top or the bottom in hole 101.
In the present embodiment, the connection between insulating part 202 and coping plate 10 and conducting strip 201 is the most crucial, and it is right
The firm of conducting strip 201 plays vital effect.Specifically, insulating part 202 is provided with the second connecting portion 202a and
Conducting strip connecting portion 202b, the first connecting portion 100 and coping plate 10 are one-body molded by the processing mode such as punching press, die casting, insulation
Part 202 is then fixed on the lower section of coping plate 10, conducting strip by coordinating between the first connecting portion 100 with the second connecting portion 202a
201 fixing with conducting strip connecting portion 202b is connected.
By this structure, it is possible to make coping plate 10 and insulating part 202 to be firmly attached, also make conducting strip simultaneously
Also it is firmly attached between 201 and insulating part 202, thus prevents conducting strip 201 during normal group is filled with and uses because of certainly
Body displacement and there is the problem of fracture failure, and the electrokinetic cell inner space shared by this attachment structure is the most less.
In the present embodiment, as in figure 2 it is shown, use punching press or other form between coping plate 10 and the first connecting portion 100
One-body molded.This mode processing technique is simple, and production efficiency is high.
In the present embodiment, can be logical by arranging a fixture block at the first connecting portion 100 away from one end of coping plate 10
Cross this fixture block and the second connecting portion 202a connects and fixes.Specifically, as it is shown on figure 3, the first of lamellar can be used to connect
Portion 100, is arranged on the marginal position of insulating part 202 by the second connecting portion 202a, makes the first connecting portion 100 be positioned at absolutely when assembling
The periphery of edge part 202, the most just can be allowed to form one by the way of bending the first connecting portion 100 and extend in the horizontal direction
Fixture block, this fixture block extends to the lower section of the second connecting portion 202a, thus blocks insulating part 202.Now, the second connecting portion 202a
Shape can not do too much requirement, as long as can be blocked by the first connecting portion 100.But more preferably a kind of mode is
Second connecting portion 202a is designed as clamping heavy stand, and the cup depth of clamping heavy stand and width are the most right with the size of fixture block
Should so that clamping heavy stand can accommodate fixture block completely.And in another embodiment, the second connecting portion 202a can also be for card
Slot form (sees Fig. 4).
Additionally, the second connecting portion 202a is also designed to bar hole, in order to enable fixture block to block bar hole,
Bar hole is perpendicular in the cross section of its length direction, cuts basifacial size and is greater than the size (seeing Fig. 5) on top.
As in figure 2 it is shown, in the present embodiment, the second connecting portion 202a can also use through-hole form, when the first connecting portion
100 can be blocked this through hole by lower section after the second connecting portion 202a, prevent insulating part 202 to be moved.In order to reduce
Taking electrokinetic cell inner space, the second connecting portion 202a can use up-small and down-big shoulder hole, and such first connects
Portion 100 may be at the inside of insulating part 202 for the part blocking the second connecting portion 202a, without protruding insulating part 202
And take more spaces of electrokinetic cell.In these cases, the first connecting portion 100 can be to use the form of rivet, by rivet
By the way of riveting, the head riveting of rivet is put down after the second connecting portion 202a, thus block the second connecting portion 202a.
In the present embodiment, conducting strip 201 is fixing with coping plate 10 insulation by conducting strip connecting portion 202b.For the ease of
Connecting, conducting strip connecting portion 202b can be set to draw-in groove, the edge of conducting strip 201 can be connected in draw-in groove.The most just
Conducting strip 201 can be made to be securely fixed on coping plate 10 by insulating part, thus prevent conducting strip 201 to be filled with in normal group
And the problem because of self displacement, fracture failure occurring during using.
The present embodiment additionally provides a kind of electrokinetic cell, can by the electrokinetic cell top cover using the present embodiment to be provided
Effectively prevent the fault caused because conducting strip in use ruptures, lost efficacy or deforms, the most also can possess relatively
Big inner space.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.All within spirit herein and principle, that is made any repaiies
Change, equivalent, improvement etc., within should be included in the protection domain of the application.
Claims (10)
1. an electrokinetic cell top cover, it is characterised in that include coping plate, the first electrode unit and the second electrode unit,
Rotating sheet connecting hole and integrated first connecting portion it is provided with on described coping plate,
Described first electrode unit includes rotating sheet, conducting strip and insulating part, and described insulating part is provided with the second connecting portion
And conducting strip connecting portion,
Described rotating sheet seals described rotating sheet connecting hole, and described conducting strip is positioned at the lower section of described rotating sheet, and turns over described
Rotor electrically connects,
Described first connecting portion protrudes the lower surface of described coping plate, and described insulating part is by described first connecting portion and described the
The cooperation of two connecting portions is fixed on the lower section of described coping plate,
Described conducting strip is fixing with the insulation of described coping plate by described conducting strip connecting portion.
Electrokinetic cell top cover the most according to claim 1, it is characterised in that described second connecting portion is through hole, described
A junction is blocked described through hole by described lower section.
Electrokinetic cell top cover the most according to claim 2, it is characterised in that described second connecting portion is up-small and down-big rank
Ladder hole.
Electrokinetic cell top cover the most according to claim 3, it is characterised in that described first connecting portion is rivet, described riveting
Follow closely through described through hole and fix with the riveting of described through hole.
Electrokinetic cell top cover the most according to claim 1, it is characterised in that described first connecting portion is away from described coping plate
One end be provided with fixture block, described fixture block connects and fixes with described second connecting portion.
Electrokinetic cell top cover the most according to claim 5, it is characterised in that described second connecting portion is clamping heavy stand, institute
State clamping heavy stand and be positioned at the edge of described insulating part.
Electrokinetic cell top cover the most according to claim 5, it is characterised in that described second connecting portion is draw-in groove.
Electrokinetic cell top cover the most according to claim 7, it is characterised in that described second connecting portion is bar hole, in institute
Stating bar hole to be perpendicular in the cross section of its length direction, the size of its underpart is more than the size on top.
Electrokinetic cell top cover the most according to claim 1, it is characterised in that described conducting strip connecting portion is draw-in groove, described
The edge card of conducting strip is in described draw-in groove.
10. an electrokinetic cell, it is characterised in that include the electrokinetic cell top cover described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548486.7U CN205666260U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548486.7U CN205666260U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666260U true CN205666260U (en) | 2016-10-26 |
Family
ID=57157612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620548486.7U Active CN205666260U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845850A (en) * | 2016-06-07 | 2016-08-10 | 宁德时代新能源科技股份有限公司 | Power battery top cover and power battery thereof |
-
2016
- 2016-06-07 CN CN201620548486.7U patent/CN205666260U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845850A (en) * | 2016-06-07 | 2016-08-10 | 宁德时代新能源科技股份有限公司 | Power battery top cover and power battery thereof |
| CN105845850B (en) * | 2016-06-07 | 2019-01-08 | 宁德时代新能源科技股份有限公司 | Power battery top cover and power battery thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |