CN205657091U - Secondary cell and casing thereof - Google Patents
Secondary cell and casing thereof Download PDFInfo
- Publication number
- CN205657091U CN205657091U CN201620444878.9U CN201620444878U CN205657091U CN 205657091 U CN205657091 U CN 205657091U CN 201620444878 U CN201620444878 U CN 201620444878U CN 205657091 U CN205657091 U CN 205657091U
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- Prior art keywords
- explosion
- proof valve
- secondary cell
- housing
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a secondary cell casing and use the secondary cell of this kind of casing, in including, establishes the secondary cell casing acceping the shell and setting up in the explosion -proof valve of acceping the bottom face of electric core accommodating space, acceping and being equipped with one on the bottom surface of shell the middle part of convex closure is provided with one and runs through the through -hole of acceping the bottom face to the convex convex closure of electric core accommodating space, the surface of convex closure is provided with explosion -proof valve and sinks a platform hole, and explosion -proof valve is fixed in explosion -proof valve sinks the platform hole and the through -hole is lived in the shutoff. Compared with the prior art, the utility model discloses secondary cell casing utilization setting realizes the installation of explosion -proof valve at the convex closure of acceping the bottom face, has can guarantee casing intensity, guarantee naked electric core gas tightness and improve the advantage of explosion -proof valve reliability.
Description
Technical field
This utility model belongs to secondary cell field, particularly relates to a kind of secondary cell and housing thereof.
Background technology
In view of module safety, some secondary cell is placed in housing bottom surface explosion-proof valve at present.But, for
Improving the capacity density of secondary cell, present battery container is more and more thinner, correspondingly, and housing bottom surface
Thickness is the thinnest, generally between 0.6～1.5mm.If welding explosion-proof valve in the direct punching in housing bottom surface,
The most at least there is following problem: 1) current most explosion-proof valve thickness at about 0.5mm, if
Housing bottom thickness is 0.6mm, the counterbore of punching the 0.5mm degree of depth, and centre rushes a through hole again, then bottom surface
Intensity can be a greater impact；2) when explosion-proof valve being welded on housing bottom surface, by may be housing burn-through
And cause gas leakage；3) explosion-proof valve is concordant with the lower surface of housing bottom surface, it is easy to during assembling and using
Lost efficacy because being extruded or touch.
In view of this, a kind of secondary cell that can solve the problem that above-mentioned technical problem of necessary offer and housing thereof.
Utility model content
The purpose of this utility model is: provide a kind of intensity height, air-tightness is good, explosion-proof valve reliability is high
Secondary cell housing, and the secondary cell using this housing is provided.
To achieve these goals, this utility model provides a kind of secondary cell housing, and it sets electricity in including
Collecting shell and the explosion-proof valve being arranged at collecting shell bottom surface of core receiving space；The bottom surface of described collecting shell is provided with
One convex closure protruded to battery core receiving space, the middle part of convex closure is provided with one and runs through the logical of collecting shell bottom surface
Hole, the outer surface of convex closure is provided with explosion-proof valve heavy stand hole, and explosion-proof valve is fixed in explosion-proof valve heavy stand hole and blocks
Live through hole.
Preferably, the outer surface of described explosion-proof valve is less than housing the outer surface of shell bottom surface or the most concordant.
Preferably, described secondary cell housing also includes the explosion-proof valve protecting film being arranged on outside explosion-proof valve, anti-
The outside in quick-fried valve heavy stand hole is provided with protecting film heavy stand hole, and explosion-proof valve protecting film is fixed in protecting film heavy stand hole
And block through hole.
Preferably, the outer surface of described explosion-proof valve protecting film is less than housing the outer surface of shell bottom surface or putting down therewith
Together.
Preferably, the outside in described explosion-proof valve heavy stand hole is provided with connection heavy stand hole, the outer surface of explosion-proof valve
Concordant with being connected the bottom surface with heavy stand hole.
Preferably, described convex closure and collecting shell use impact style one-body molded.
Preferably, the end face of described convex closure exceeds 0.3～5mm than the inner surface housing shell bottom surface, and explosion-proof valve sinks
The bottom thickness in platform hole is 0.3～3mm.
Preferably, the distance between described explosion-proof valve protecting film and explosion-proof valve is 0.1～5mm；Explosion-proof valve is protected
The material of film is PP, PE, PET, PC or PPS.
Preferably, described convex closure is circular, oval, rectangle or square.
To achieve these goals, this utility model additionally provides a kind of secondary cell, and it includes housing, top
Lid, naked battery core, dielectric film and electrolyte；Top seal is arranged on the open top of housing, by naked battery core,
Dielectric film and electrolyte encapsulate in the housing；Described housing is the secondary cell housing described in any of the above-described paragraph.
Compared with prior art, this utility model secondary cell housing utilizes and is arranged on the convex closure housing shell bottom surface
Realize the installation of explosion-proof valve, have ensure that casing rigidity, ensure naked battery core air-tightness and improve explosion-proof valve
The advantage of reliability.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and detailed description of the invention, to this utility model secondary cell, secondary cell housing and
Its Advantageous Effects is described in detail.
Fig. 1 is the decomposition texture schematic diagram of the first embodiment of this utility model secondary cell housing.
Fig. 2 is the cross-sectional schematic housing shell in Fig. 1.
Fig. 3 is the enlarged drawing of part A in Fig. 2.
Fig. 4 is the cross-sectional schematic after this utility model secondary cell housing assembles
Fig. 5 is the enlarged drawing of part B in Fig. 4.
Fig. 6 is the decomposition texture schematic diagram of this utility model secondary cell.
Fig. 7 is the package assembly schematic diagram of this utility model secondary cell.
Fig. 8 is the second embodiment structural representation housing shell of this utility model secondary cell housing.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below
In conjunction with the drawings and specific embodiments, this utility model is further elaborated.It should be appreciated that
Detailed description of the invention described in this specification is only used to explain this utility model, is not intended to limit
This utility model.
Referring to Fig. 1 to Fig. 3, the first embodiment of this utility model secondary cell housing includes housing shell
10, it is arranged at the explosion-proof valve 20 of collecting shell 10 bottom surface and is arranged at the explosion-proof valve protecting film outside explosion-proof valve 20
30。
House in shell 10 is and set the square casing of battery core receiving space 100, its bottom surface 12 be provided with one to
The convex closure 14 that battery core receiving space 100 protrudes, the end face of convex closure 14 exceeds than the inner surface of bottom surface 12
0.3～5mm.The middle part of convex closure 14 is provided with a through hole 16 running through bottom surface 12, the outer surface of convex closure 14
On be provided with three heavy stand holes 140,142,144 coaxial with through hole 16.Wherein, distance battery core houses sky
Between 100 nearest for explosion-proof valve heavy stand hole 140, distance battery core receiving space 100 farthest for protecting film heavy stand
Hole 144, what position was placed in the middle is connection heavy stand hole 142.
Please refer to Fig. 4 and Fig. 5, explosion-proof valve 20 is lamellar, and it is fixed in explosion-proof valve heavy stand hole 140
And block through hole 16, and outer surface is with to be connected the bottom surface with heavy stand hole 142 concordant, in order to explosion-proof valve 20
The butt welding that can use better tightness during installation realizes fixing.The bottom in explosion-proof valve heavy stand hole 140 is thick
Degree is 0.3～3mm, can ensure that when explosion-proof valve 20 welds will not by burn-through.
Explosion-proof valve protecting film 30 is also lamellar, and it is fixed in protecting film heavy stand hole 144, and outer surface is less than
The outer surface of bottom surface 12 or the most concordant.So, the degree of depth in connection heavy stand hole 142 is explosion-proof valve guarantor
Distance between cuticula 30 and explosion-proof valve 20, this distance is 0.1～5mm, can prevent from damaging under external force
Hinder explosion-proof valve 20.
The material housing shell 10 that this utility model secondary cell housing is used is aluminum, rustless steel etc., explosion-proof
The material of valve 20 is also aluminum, rustless steel etc., the material of explosion-proof valve protecting film 30 can be PP, PE, PET,
The plastic materials such as PC, PPS.Wherein, the plastic material such as PP, PE, PET, PPS can use fire proofing wood
Material.
It can be readily appreciated that convex closure 14 can be circle, ellipse, rectangle, square or other abnormity.
Referring to Fig. 6, this utility model secondary cell includes housing, top cover 60, naked battery core 70, dielectric film
80 and electrolyte (not shown).Housing is and above-mentioned utilizes convex closure 14 to be fixed with explosion-proof valve 20 and explosion-proof valve to protect
The secondary cell housing of cuticula 30, top cover 60 is sealingly mounted at the open top of housing, by naked battery core 70,
Dielectric film 80 and electrolyte encapsulate in the housing.
Top cover 60 is provided with positive and negative terminals 62, and offers sealable liquid injection hole 64.
Naked battery core 70 is winding-structure, and positive and negative lug 72 is installed in the top of naked battery core 70 and from naked battery core
The end face of 70 stretches out, and is connected with the positive and negative terminals 62 of top cover 60 respectively.
Dielectric film 80 is used for being spaced naked battery core 70 and housing, and its shape is essentially identical with housing, simply size
Smaller.Naked battery core 70 is initially charged with in dielectric film 80, then loads housing together with dielectric film 80.Dielectric film 80
Bottom offer multiple can supplied gas and the perforation of electrolyte circulation.
It can be readily appreciated that being given above the first embodiment is this utility model secondary cell and shell thereof
The better embodiment of body, in other embodiments, housing the structure at the convex closure 14 of shell 10 can have
One or more change below: 1) because arranging the purpose in connection heavy stand hole 142 and being intended merely to facilitate explosion-proof
The welding of valve 20, therefore can also be not provided with connection heavy stand hole 142, changes into using overlap welding or penetrating
Explosion-proof valve 20 is determined in solid welding；2) arranging rupture pressure disc protection valve 30 is to protect explosion-proof valve 20 further,
Therefore more excellent selection is fallen within, in some embodiments it is possible to be not provided with rupture pressure disc protection valve 30 (this
In the case of Zhong, convex closure 14 outer surface is naturally also no need for arranging protecting film heavy stand hole 144).
Such as, refer to Fig. 8, in the second embodiment of this utility model secondary cell housing, house shell
The convex closure 14a of 10a is provided only with an explosion-proof valve heavy stand hole 140a, and explosion-proof valve 20 is welded on explosion-proof valve heavy stand hole
140a also seals through hole 16.
By above description, this utility model secondary cell and housing thereof at least have the advantage that
1) intensity of housing is ensured.After rushing convex closure, house shell without thinning the weldering that can realize explosion-proof valve 20
Connect, it is ensured that the intensity of housing is unaffected.
2) air-tightness of naked battery core is ensured.The existence of convex closure ensure that the welding position of explosion-proof valve 20 has
Enough thickness and intensity, it is to avoid house the risk that shell is leaked gas by burn-through.
3) reliability of explosion-proof valve is improved.Being arranged on inside convex closure by explosion-proof valve 20, outside is protected by explosion-proof valve
Cuticula 30 is protected, and can effectively prevent explosion-proof valve 20 damaged because being squeezed or touch.
According to above-mentioned principle, this utility model can also carry out suitable change and amendment to above-mentioned embodiment.
Therefore, this utility model is not limited to detailed description of the invention disclosed and described above, to this utility model
Some modifications and changes should also be as falling in scope of the claims of the present utility model.Additionally, to the greatest extent
Pipe this specification employs some specific terms, but these terms are merely for convenience of description, the most right
This utility model constitutes any restriction.
Claims (10)
1. a secondary cell housing, including in set the collecting shell of battery core receiving space and be arranged at the bottom of collecting shell
The explosion-proof valve in face；It is characterized in that: the bottom surface of described collecting shell is provided with one and protrudes to battery core receiving space
Convex closure, the middle part of convex closure be provided with one run through house shell bottom surface through hole, the outer surface of convex closure is provided with
Explosion-proof valve heavy stand hole, explosion-proof valve is fixed in explosion-proof valve heavy stand hole and blocks through hole.
Secondary cell housing the most according to claim 1, it is characterised in that: the appearance of described explosion-proof valve
Face is less than housing the outer surface of shell bottom surface or the most concordant.
Secondary cell housing the most according to claim 1, it is characterised in that: described secondary cell housing
Also including the explosion-proof valve protecting film being arranged on outside explosion-proof valve, the outside in explosion-proof valve heavy stand hole is provided with protecting film
Heavy stand hole, explosion-proof valve protecting film is fixed in protecting film heavy stand hole and blocks through hole.
Secondary cell housing the most according to claim 3, it is characterised in that: described explosion-proof valve protecting film
Outer surface less than housing the outer surface of shell bottom surface or the most concordant.
5. according to the secondary cell housing described in claim 1 or 3, it is characterised in that: described explosion-proof valve sinks
The outside in platform hole is provided with connection heavy stand hole, and the outer surface of explosion-proof valve is concordant with the bottom surface being connected use heavy stand hole.
Secondary cell housing the most according to claim 1, it is characterised in that: described convex closure and collecting shell
Employing impact style is one-body molded.
Secondary cell housing the most according to claim 1, it is characterised in that: the end face ratio of described convex closure
The inner surface housing shell bottom surface exceeds 0.3～5mm, and the bottom thickness in explosion-proof valve heavy stand hole is 0.3～3mm.
Secondary cell housing the most according to claim 1, it is characterised in that: described explosion-proof valve protecting film
And the distance between explosion-proof valve is 0.1～5mm；The material of explosion-proof valve protecting film be PP, PE, PET, PC or
PPS。
Secondary cell housing the most according to claim 1, it is characterised in that: described convex closure be circular,
Ellipse, rectangle or square.
10. a secondary cell, including housing, top cover, naked battery core, dielectric film and electrolyte；Top seal
It is arranged on the open top of housing, naked battery core, dielectric film and electrolyte are encapsulated in the housing；Its feature exists
In: described housing is the secondary cell housing according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444878.9U CN205657091U (en) | 2016-05-16 | 2016-05-16 | Secondary cell and casing thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620444878.9U CN205657091U (en) | 2016-05-16 | 2016-05-16 | Secondary cell and casing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657091U true CN205657091U (en) | 2016-10-19 |
Family
ID=57402678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620444878.9U Active CN205657091U (en) | 2016-05-16 | 2016-05-16 | Secondary cell and casing thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205657091U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037832A (en) * | 2018-06-28 | 2018-12-18 | 合肥国轩高科动力能源有限公司 | A kind of battery liquid cooling apparatus and battery system |
| CN109817849A (en) * | 2017-11-21 | 2019-05-28 | 宁德新能源科技有限公司 | Pack case and battery |
| CN111613745A (en) * | 2020-04-16 | 2020-09-01 | 宁波吉利汽车研究开发有限公司 | Power battery package and vehicle |
| CN113270673A (en) * | 2021-05-17 | 2021-08-17 | 上汽大众汽车有限公司 | Power battery |
| WO2023159847A1 (en) * | 2022-02-28 | 2023-08-31 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
-
2016
- 2016-05-16 CN CN201620444878.9U patent/CN205657091U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817849A (en) * | 2017-11-21 | 2019-05-28 | 宁德新能源科技有限公司 | Pack case and battery |
| CN109817849B (en) * | 2017-11-21 | 2024-04-30 | 宁德新能源科技有限公司 | Packaging shell and battery |
| CN109037832A (en) * | 2018-06-28 | 2018-12-18 | 合肥国轩高科动力能源有限公司 | A kind of battery liquid cooling apparatus and battery system |
| CN111613745A (en) * | 2020-04-16 | 2020-09-01 | 宁波吉利汽车研究开发有限公司 | Power battery package and vehicle |
| CN113270673A (en) * | 2021-05-17 | 2021-08-17 | 上汽大众汽车有限公司 | Power battery |
| WO2023159847A1 (en) * | 2022-02-28 | 2023-08-31 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical apparatus |
| WO2023159840A1 (en) * | 2022-02-28 | 2023-08-31 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |