CN205666265U - Power battery top cap and power battery - Google Patents
Power battery top cap and power battery Download PDFInfo
- Publication number
- CN205666265U CN205666265U CN201620548487.1U CN201620548487U CN205666265U CN 205666265 U CN205666265 U CN 205666265U CN 201620548487 U CN201620548487 U CN 201620548487U CN 205666265 U CN205666265 U CN 205666265U
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- CN
- China
- Prior art keywords
- rotating sheet
- electrokinetic cell
- connecting hole
- top cover
- conducting strip
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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 an energy storage device field especially relates to a power battery top cap and power battery. The power battery top cap includes the top cap piece, first electrode unit and second electrode unit, the first electrode unit is including the upset piece, the insulating part, conducting strip and connecting plate, be provided with assembly groove and upset piece connecting hole on the top cap piece, the assembly groove is by sunken formation of lower surface of top cap piece, upset piece connecting hole extends to the assembly groove by the upper surface of top cap piece, the connecting plate covers upset piece connecting hole, the sealed upset piece connecting hole of upset piece, the upset piece is connected with the connecting plate electricity, the conducting strip is located the below of upset piece, and be connected with upset piece electricity, assembly inslot and fixed is filled in to the insulating part part or whole, furthermore, the conducting strip is fixed to the insulating part, the second electrode unit sets up on the top cap piece. Power battery includes the power battery top cap. The power battery that this application provided can carry high energy density.
Description
Technical field
The application relates to energy storage device field, particularly relates to a kind of electrokinetic cell top cover and electrokinetic cell.
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 or coping plate by being weldingly connected electricity
Conductance is to positive terminal.Working as over-charging of battery, air pressure inside increases, and promotes rotating sheet to pull apart CID, rotating sheet and conduction segment
Open.
In view of at present the capacity density of electrokinetic cell being required more and more higher, the space availability ratio requirement to inside battery
More and more higher.
In view of this, we have must design a kind of structure, and the fewest takies inside battery space.
Utility model content
This application provides a kind of electrokinetic cell top cover and electrokinetic cell, it is possible to solve the problems referred to above.
The first aspect of the application provides a kind of electrokinetic cell top cover, including coping plate, the first electrode unit and the
Two electrode units,
Described first electrode unit includes rotating sheet, insulating part, conducting strip and connecting plate,
Being provided with fitting recess and rotating sheet connecting hole on described coping plate, described fitting recess is by the following table of described coping plate
Face depression is formed, and described rotating sheet connecting hole is extended to described fitting recess by the upper surface of described coping plate, described connecting plate covers
Cover described rotating sheet connecting hole,
Described rotating sheet seals described rotating sheet connecting hole, and described rotating sheet electrically connects with described connecting plate, described conduction
Sheet is positioned at the lower section of described rotating sheet, and electrically connects with described rotating sheet, described dielectric insulator segments or all fill in described assembling
Groove is interior and fixes, and, described insulating part fixes described conducting strip,
Stating the second electrode unit to be arranged on described coping plate, described rotating sheet can exceed in electrokinetic cell internal pressure
Overturn during reference pressure and depart from the status of electrically connecting with described conducting strip.
Preferably, the bottom of described connecting plate is provided with groove, and described groove is relative with described rotating sheet connecting hole, described
Rotating sheet can overturn in the described groove of entrance.
Preferably, described rotating sheet connecting hole is being perpendicular to the projection of described coping plate thickness direction with described groove at this
The projection in direction overlaps or lies within portion.
Preferably, described rotating sheet seals with the end edge of described rotating sheet connecting hole and electrically connects, described second electrode
Unit and described coping plate electric insulation.
Preferably, the end edge of described rotating sheet connecting hole is provided with a circle heavy stand, the edge of described rotating sheet and institute
State heavy stand to be tightly connected.
Preferably, described rotating sheet includes union joint, turning part and loop connecting portion,
Turning part is lamellar annuli arrangement, and described union joint is positioned at the middle part of turning part, described loop connecting
The outward flange of cincture turning part, portion,
The lower surface of described union joint is fitted and connected with the upper surface of described conducting strip, and described loop connecting portion is heavy with described
Platform is connected.
Preferably, described rotating sheet is wholely set with described coping plate.
Preferably, described insulating part being provided with caulking groove, the edge of described conducting strip embeds in described caulking groove.
Preferably, rivet between described insulating part and described coping plate.
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 is by arranging fitting recess, and filling at least partially of insulating part is opened in
In fitting recess on coping plate, it is possible to reduce and inside battery space is taken.
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 pattern of the electrokinetic cell top cover that Fig. 1 is provided by the embodiment of the present application；
The electrokinetic cell top cover A portion in FIG of the rotating sheet using absolute construction that Fig. 2 is provided by the embodiment of the present application
The partial enlarged drawing divided；
The electrokinetic cell top cover A in FIG of the rotating sheet using integral structure that Fig. 3 is provided by the embodiment of the present application
The partial enlarged drawing of part；
The fitting recess that Fig. 4 is provided by the embodiment of the present application and insulating part use the electrokinetic cell top cover of riveted structure at figure
The partial enlarged drawing of part A in 1.
Reference:
10-coping plate；
100-rotating sheet connecting hole；
102-fitting recess；
104-heavy stand；
106-riveting parts；
20-the first electrode unit；
200-insulating part；
202-conducting strip；
204-rotating sheet；
204a-union joint；
204b-turning part；
204c-loop connecting portion；
206-connecting plate；
208-groove；
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 is all with the laying state of the electrokinetic cell top cover in accompanying drawing and electrokinetic cell for ginseng
According to.
As shown in Figures 1 to 3, the embodiment of the present application provides a kind of electrokinetic cell top cover, including coping plate the 10, first electrode
Unit 20 and the second electrode unit 30.Wherein, the first electrode unit 20 includes insulating part 200, conducting strip 202, rotating sheet
204.In the present embodiment, coping plate 10 being provided with rotating sheet connecting hole 100 and fitting recess 102, fitting recess 102 is by top cover
The lower surface depression of sheet 10 is formed, and rotating sheet connecting hole 100 is then extended in fitting recess 102 by the upper surface of coping plate 10.
Rotating sheet 204 and coping plate 10 can be one-body molded (directly punchings from coping plate 10 for example with impact style
Extrude rotating sheet 204), it is also possible to it is split molding.When rotating sheet 204 uses split molding with coping plate 10, can use
Rotating sheet 204 is fixed in rotating sheet connecting hole 100 by the mode of welding, and wants to seal this rotating sheet connecting hole 100.
As shown in Figures 2 and 3, it is electrically connected between the first electrode unit 20 and external electric equipment to easily facilitate
Connecing, the first electrode unit 20 in the present embodiment also includes that connecting plate 206, connecting plate 206 cover rotating sheet connecting hole 100.Logical
Cross connecting plate 206 to cover rotating sheet connecting hole 100 and can protect rotating sheet 204, prevent it from being punctured by foreign object.Connecting plate 206 with
Can separately formed fit together again between coping plate 10, it is also possible to one-body molded by modes such as punching presses.
In order to ensure that electric current is transferred on connecting plate 206 smoothly through rotating sheet 204, the most unlikely positive and negative the most extremely short
Road, all can carry out the first electrode unit 20 insulation in the present embodiment and be connected with the second electrode unit 30 with coping plate 10.
But, carry out absolutely with coping plate 10 as a kind of reduction procedure, the first electrode unit 20 and the second electrode unit 30 alternative one
Edge connects.Such as, the second electrode unit 30 can be electrically connected with coping plate 10, and leading in the first electrode unit 20
Electricity sheet 202, rotating sheet 204 and connecting plate 206 are the most all connected with coping plate 10 insulation, and rotating sheet 204 conducts electricity with connecting plate 206
Direct-connected.But this mode needs scattering device polylith insulation system, therefore it is not recommended that use.
More preferably scheme is that the second electrode unit 30 is connected with coping plate 10 insulation, rotating sheet 204 and coping plate 10
Directly electrical connection, is simultaneously connected with plate 206 and also electrically connects with coping plate 10, thus passed through coping plate 10 by rotating sheet 204 by electric energy
It is handed on connecting plate 206.
Meanwhile, the conducting strip 202 being integrated with CID is positioned at the lower section of rotating sheet 204, under normality, and conducting strip 202 and rotating sheet
204 electrical connections, when electrokinetic cell internal pressure exceedes reference pressure, rotating sheet 204 can overturn and depart from and conducting strip 202
Status of electrically connecting.When assembling, part or all of insulating part 200 fill in fitting recess, and by insulating part 200 with should
Fitting recess 102 is fixed.
In the present embodiment, multiple fixed form, the most bonding, card can be used between insulating part 200 and fitting recess 102
Connect, riveting etc..Wherein, bonding is to directly utilize bonding agent to be sticked together on the surface of insulating part 200 with fitting recess 102, this
Fixed form there may be illusive problem.And clamping needs to arrange the card of correspondence on insulating part 200 and fitting recess 102
Fitting, structure is complex.Therefore compared to the above two, the mode of riveting is the simplest, and fastness is the highest.Such as Fig. 4
Shown in, riveting parts 106 can be formed in the position of the corresponding fitting recess 102 of coping plate 10, at the corresponding riveting parts 106 of insulating part 200
Position form riveted holes (non-label in figure), during assembling, by riveting parts 106 through riveted holes, afterwards by riveting parts 106 riveting
Extremely, complete to fix.Conducting strip 202 is fixed by insulating part 200.
In the case of holding insulating part 200 and conducting strip 202 thickness are constant, by insulating part 200 is filled in assembling
The mode of groove 102 can effectively reduce the inside battery space shared by insulating part 200 and conducting strip 202, is effectively improved electricity
The energy density in pond.
Can arrange caulking groove 200a on insulating part 200, the edge of conducting strip 202 then embeds in caulking groove 200a, complete with absolutely
The connection of edge part 200.Insulating part 200 be connected with conducting strip 202 fixing after, it is desirable to make insulating part 200 and conducting strip 202
Lower surface flushes, to reduce the space shared by conducting strip 202 further.
CID part at conducting strip 202 is provided with weak area, and such as indentation can be right during rotating sheet 204 upset
CID pulls, so that weak area is incessantly pullled power because bearing and ruptured.But the existence of connecting plate 206 may make upset
The upset of sheet 204 is restricted, and causes and cannot pull apart CID.In order to avoid this situation occurs, the present embodiment is at connecting plate 206
Bottom be provided with groove 208, groove 208 is relative with rotating sheet connecting hole 100, and the upset for rotating sheet 204 reserves enough
Space, rotating sheet 204 can enter in groove 208 after pressurized overturns, be stopped without being connected plate 206.
In order to ensure that rotating sheet 204 can overturn smoothly, rotating sheet connecting hole 100 is being perpendicular to coping plate 10 thickness direction
Projection best overlap with groove 208 in the projection of the direction or lie within portion.
In the present embodiment, for the ease of manufacturing and assembling, rotating sheet 204 can be with the end of rotating sheet connecting hole 100
Edge is connected and sealed, preferably top.Multiple side can be passed through between rotating sheet 204 and rotating sheet connecting hole 100
Formula is tightly connected, and the present embodiment introduces two kinds of set-up modes therein.
As in figure 2 it is shown, first kind of way is that the top of rotating sheet connecting hole 100 is provided with a circle heavy stand 104, turn over
The edge of rotor 204 is tightly connected with heavy stand 104.Rotating sheet 204 specifically can use following structure, including union joint 204a,
Turning part 204b and loop connecting portion 204c, turning part 204b is lamellar annuli arrangement, and union joint 204a is positioned at turning part
The middle part of 204b, loop connecting portion 204c is then around the outward flange of turning part 204b.During assembling, the lower surface of union joint 204a with
The CID part of conducting strip 202 connects, and loop connecting portion 204c is then connected with heavy stand 104.
As it is shown on figure 3, the second way is by the most one-body molded with coping plate 10 for rotating sheet 204, can by mold,
The moulding processs such as machining.
The present embodiment additionally provides a kind of electrokinetic cell, uses the electrokinetic cell top cover in the present embodiment, it is possible to increase should
The energy density of electrokinetic cell.
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,
Described first electrode unit includes rotating sheet, insulating part, conducting strip and connecting plate,
Being provided with fitting recess and rotating sheet connecting hole on described coping plate, described fitting recess is recessed by the lower surface of described coping plate
Falling into and formed, described rotating sheet connecting hole is extended to described fitting recess by the upper surface of described coping plate, and described connecting plate covers institute
State rotating sheet connecting hole,
Described rotating sheet seals described rotating sheet connecting hole, and described rotating sheet electrically connects with described connecting plate, described conducting strip position
In the lower section of described rotating sheet, and electrically connect with described rotating sheet, described dielectric insulator segments or all fill in described fitting recess
And fix, and described insulating part fixes described conducting strip,
Described second electrode unit is arranged on described coping plate, and described rotating sheet can exceed base in electrokinetic cell internal pressure
Overturn during quasi-pressure and depart from the status of electrically connecting with described conducting strip.
2. electrokinetic cell top cover as claimed in claim 1, it is characterised in that the bottom of described connecting plate is provided with groove, institute
Stating groove relative with described rotating sheet connecting hole, described rotating sheet can overturn in the described groove of entrance.
3. electrokinetic cell top cover as claimed in claim 2, it is characterised in that described rotating sheet connecting hole is being perpendicular to described top
The projection in coverslip thickness direction overlaps with described groove in the projection of the direction or lies within portion.
4. the electrokinetic cell top cover as described in any one of claims 1 to 3, it is characterised in that described rotating sheet and described upset
The end edge of sheet connecting hole seals electrical connection, described second electrode unit and described coping plate electric insulation.
Electrokinetic cell top cover the most according to claim 4, it is characterised in that the end edge of described rotating sheet connecting hole sets
Being equipped with a circle heavy stand, the edge of described rotating sheet is tightly connected with described heavy stand.
Electrokinetic cell top cover the most according to claim 5, it is characterised in that described rotating sheet includes union joint, turning part
And loop connecting portion,
Turning part is lamellar annuli arrangement, and described union joint is positioned at the middle part of turning part, described loop connecting portion ring
Around the outward flange of turning part,
The lower surface of described union joint is fitted with the upper surface of described conducting strip and is electrically connected, described loop connecting portion and described heavy stand
It is connected.
Electrokinetic cell top cover the most according to claim 4, it is characterised in that described rotating sheet integrally sets with described coping plate
Put.
8. according to the electrokinetic cell top cover described in any one of claims 1 to 3, it is characterised in that be provided with on described insulating part
Caulking groove, the edge of described conducting strip embeds in described caulking groove.
9. according to the electrokinetic cell top cover described in any one of claims 1 to 3, it is characterised in that described insulating part and described top
Rivet between cover plate.
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 |
|---|---|---|---|
| CN201620548487.1U CN205666265U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620548487.1U CN205666265U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666265U true CN205666265U (en) | 2016-10-26 |
Family
ID=57156586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620548487.1U Active CN205666265U (en) | 2016-06-07 | 2016-06-07 | Power battery top cap and power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3333931A1 (en) * | 2016-12-09 | 2018-06-13 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| CN109428016A (en) * | 2017-08-30 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
-
2016
- 2016-06-07 CN CN201620548487.1U patent/CN205666265U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3333931A1 (en) * | 2016-12-09 | 2018-06-13 | Contemporary Amperex Technology Co., Limited | Secondary battery |
| US10601001B2 (en) | 2016-12-09 | 2020-03-24 | Contemporary Amperex Technology, Co., Limited | Secondary battery |
| CN109428016A (en) * | 2017-08-30 | 2019-03-05 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
| CN109428016B (en) * | 2017-08-30 | 2021-05-18 | 宁德时代新能源科技股份有限公司 | Secondary cell's top cap subassembly and secondary cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |