CN109449324A - A kind of power battery cover board - Google Patents
A kind of power battery cover board Download PDFInfo
- Publication number
- CN109449324A CN109449324A CN201811522387.1A CN201811522387A CN109449324A CN 109449324 A CN109449324 A CN 109449324A CN 201811522387 A CN201811522387 A CN 201811522387A CN 109449324 A CN109449324 A CN 109449324A
- Authority
- CN
- China
- Prior art keywords
- cover board
- explosion
- proof valve
- kidney slot
- power battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007373 indentation Methods 0.000 claims abstract description 30
- 210000003734 kidney Anatomy 0.000 claims abstract description 30
- 230000008719 thickening Effects 0.000 claims abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims 1
- 229920001721 polyimide Polymers 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses a kind of power battery cover boards, including cover board, positive electrode and cathode component, two groups of thickening parts are symmetrically arranged on the cover board, the positive electrode and cathode component are separately positioned on corresponding thickening part, the cover plate central offers kidney slot, explosion-proof valve is welded on the inside of the kidney slot, and the section of the kidney slot is stairstepping, the kidney slot includes upper kidney slot and lower kidney slot, the cover board lower surface bonds have anticorrosion gummed paper corresponding with explosion-proof valve, the shape of the explosion-proof valve is corresponding with lower kidney-shaped hole shape, the explosion-proof valve is equipped with a circle indentation, the shape size of the indentation is consistent with upper kidney slot, the cover board lower surface is equipped with bracket.The present invention is by that can prevent explosion-proof valve from avoiding explosion-proof valve from damaging by the electrolytic corrosion of power battery interior, improve the performance of power battery, eliminate safe hidden trouble in cover board lower surface bonds anticorrosion gummed paper.
Description
Technical field
The invention belongs to power battery technology fields, and in particular to a kind of power battery cover board.
Background technique
For lithium ion battery due to having many advantages, such as high-energy density, small in size, long service life, self discharge is small wide
It is general be applied to national defence, industry, civil field many mobile devices on.Cover board is the important component of lithium ion battery, and cover board is held
Carry the critical functions such as electrical conductivity and sealing cover conjunction.
Explosion-proof valve generally can be all set on battery cover board, and explosion-proof valve is equipped with a circle indentation, and explosion-proof valve is divided into three by indentation
The different region of a thickness: the region other than indentation, the region at indentation within region and indentation, the area thickness other than indentation
Area thickness at area thickness > indentation within > indentation.When inner pressure of lithium ion battery is excessive, compression shock is explosion-proof
The most weak region of valve, i.e. region at indentation, explosion-proof valve open releasing pressure automatically from indentation, the phenomenon that prevent explosion,
Since the explosion-proof valve of lithium ion battery uses metallic aluminium, and it is not isolated between explosion-proof valve and electrolyte, this allows for explosion-proof
Valve easily by electrolytic corrosion, causes leakage, reduces the properties of battery, or even causes safety accident.
Summary of the invention
The purpose of the present invention is to provide a kind of power battery cover boards, to solve to propose explosion-proof valve in above-mentioned background technique
Easily by electrolytic corrosion, the problem of causing leakage to reduce the properties of battery, or even cause safety accident.
To achieve the above object, present invention employs following technical solutions: a kind of power battery cover board, including cover board,
Positive electrode and cathode component are symmetrically arranged with two groups of thickening parts on the cover board, and the positive electrode and cathode component are set respectively
It sets on corresponding thickening part, the cover plate central offers kidney slot, is welded with explosion-proof valve on the inside of the kidney slot, and described
The section of kidney slot is stairstepping, and the kidney slot includes upper kidney slot and lower kidney slot, the cover board lower surface bonds have with
The corresponding anticorrosion gummed paper of explosion-proof valve, the shape of the explosion-proof valve is corresponding with lower kidney-shaped hole shape, sets on the explosion-proof valve
There is a circle indentation, the shape size of the indentation is consistent with upper kidney slot, and the cover board lower surface is equipped with bracket.
The edge of the anticorrosion gummed paper is 1.5mm at least bigger than the edge of explosion-proof valve.
Preferably, the material of the anticorrosion gummed paper is PET(polyethylene terephthalate), PE(polyethylene), PI(is poly-
Acid imide).
Preferably, the anticorrosion gummed paper with a thickness of 0.05 ~ 1mm.Preferably, the explosion-proof valve is located on the outside of indentation
Part thickness is 0.3~0.7mm, and the explosion-proof valve is located at 0.1~0.3mm of part thickness inside indentation, the explosion-proof valve position
At indentation with a thickness of 0.05~0.1mm.
Preferably, the bracket is made of Jiong shape bar and cross bar, and the Jiong shape bar side symmetrically offers two groups of spliced eyes,
The cross bar is equipped with grafting block corresponding with spliced eye, and the Jiong shape bar center is equipped with corresponding with anticorrosion gummed paper convex
It rises.
Preferably, the center of the protrusion offers at least five groups of strip-shaped holes.
Technical effect and advantage of the invention: a kind of power battery cover board proposed by the present invention, compared with prior art,
Having the advantage that can prevent the explosion-proof electrolyte by power battery interior rotten in cover board lower surface bonds anticorrosion gummed paper
Erosion, avoids explosion-proof valve from damaging, improves the performance of power battery, eliminate safe hidden trouble.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is cover board overlooking structure diagram of the invention；
Fig. 3 is cover board the schematic diagram of the section structure of the invention；
Fig. 4 is explosion-proof valve the schematic diagram of the section structure of the invention；
Fig. 5 is explosion-proof valve overlooking structure diagram of the invention；
Fig. 6 is supporting structure schematic diagram of the invention.
In figure: 1, cover board；2, explosion-proof valve；3, anticorrosion gummed paper；4, positive electrode；5, cathode component；6, bracket；601, Jiong
Shape bar；602, cross bar；7, thickening part；8, strip-shaped hole；9, kidney slot；10, indentation；11, raised；12, spliced eye；13, grafting block.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of power battery cover boards as shown in figures 1 to 6, including cover board 1, positive electrode 4 and cathode
Component 5 is symmetrically arranged with two groups of thickening parts 7 on the cover board 1, and the positive electrode 4 and cathode component 5 are separately positioned on corresponding
On thickening part 7,1 center of cover board offers kidney slot 9, and explosion-proof valve 2, and the kidney-shaped are welded on the inside of the kidney slot 9
The section in hole 9 is stairstepping, and the kidney slot 9 includes upper kidney slot 901 and lower kidney slot 902,1 lower surface bonds of cover board
There is anticorrosion gummed paper 3 corresponding with explosion-proof valve 2, the shape of the explosion-proof valve 2 is corresponding with lower 902 shape of kidney slot, described
Explosion-proof valve 2 is equipped with a circle indentation 10, and the shape size of the indentation 10 is consistent with upper kidney slot 901,1 following table of cover board
Face is equipped with bracket 6.
Preferably, edge greatly at least 1.5mm of the edge of the anticorrosion gummed paper 3 than explosion-proof valve 2, to make anticorrosion glue
Paper 3 can be covered on the surface of explosion-proof valve 2, avoid explosion-proof valve 2 by electrolytic corrosion.
Preferably, the material of the anticorrosion gummed paper 3 is the plastics such as PET or PE.
Preferably, the anticorrosion gummed paper 3 with a thickness of 0.05 ~ 1mm.
Preferably, stating explosion-proof valve 2 to be located at the part thickness in 10 outside of indentation is 0.3~0.7mm, the explosion-proof valve 2 is located at
0.1~0.3mm of part thickness inside indentation 10, the explosion-proof valve 2 be located at indentation 10 with a thickness of 0.05~0.1mm.
Preferably, the bracket 6 is made of Jiong shape bar 601 and cross bar 602,601 side of Jiong shape bar is symmetrically offered
Two groups of spliced eyes 12, the cross bar 602 are equipped with grafting block 13 corresponding with spliced eye 12, and 601 center of Jiong shape bar is set
Have corresponding with anticorrosion gummed paper 3 raised 11, bracket 6 can push down anticorrosion gummed paper 3, avoid anticorrosion gummed paper 3 from occurring de-
It falls.
Preferably, raised 11 center offers at least five groups of strip-shaped holes 8, protrusion 11 is made to will not influence air pressure.
Structural principle: explosion-proof valve 2, when power battery interior pressure is excessive, compression shock explosion-proof valve is arranged in 1 center of cover board
2 most weak regions, i.e. region at indentation 10, explosion-proof valve 2 are opened from indentation 10, reduce the pressure of power battery interior, are prevented
Stopping power battery explosion, in 1 lower surface bonds anticorrosion gummed paper 3 of cover board, and the upper surface of the anticorrosion gummed paper 3 with it is explosion-proof
The bottom end of valve 2 bonds together, and anticorrosion gummed paper 3 has good insulating properties and leakproofness, and can prevent 2 quilt of explosion-proof valve
The electrolytic corrosion of power battery interior avoids explosion-proof valve 2 from damaging, improves the performance of power battery, eliminate safe hidden trouble, will just
Pole component 4 and cathode component 5 are mounted on the thickening part 7 of cover board 1, and the installation of positive electrode 4 and cathode component 5 can be made more firm
Gu in 1 lower surface mounting bracket 6 of cover board by way of bonding, bracket 6 can push down anticorrosion gummed paper 3, avoid anticorrosion glue
Paper 3 is fallen off.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of power battery cover board, including cover board (1), positive electrode (4) and cathode component (5), it is characterised in that: described
Two groups of thickening parts (7) are symmetrically arranged on cover board (1), the positive electrode (4) and cathode component (5) are separately positioned on corresponding add
On thick portion (7), cover board (1) center is offered kidney slot (9), is welded with explosion-proof valve (2) on the inside of the kidney slot (9), and
The section of the kidney slot (9) is stairstepping, and the kidney slot (9) includes upper kidney slot (901) and lower kidney slot (902), institute
Stating cover board (1) lower surface bonds has anticorrosion gummed paper (3) corresponding with explosion-proof valve (2), and the shape of the explosion-proof valve (2) is under
Kidney slot (902) shape is corresponding, and the explosion-proof valve (2) is equipped with circle indentation (10), the shape size of the indentation (10)
Unanimously with upper kidney slot (901), cover board (1) lower surface is equipped with bracket (6).
2. a kind of power battery cover board according to claim 1, it is characterised in that: the side of the anticorrosion gummed paper (3)
Edge is 1.5mm at least bigger than the edge of explosion-proof valve (2).
3. a kind of power battery cover board according to claim 1, it is characterised in that: the material of the anticorrosion gummed paper (3)
Matter is PET(polyethylene terephthalate), PE(polyethylene), PI(polyimides).
4. a kind of power battery cover board according to claim 1, it is characterised in that: the thickness of the anticorrosion gummed paper (3)
Degree is 0.05 ~ 1mm.
5. a kind of power battery cover board according to claim 1, it is characterised in that: the explosion-proof valve (2) is located at indentation
(10) part thickness on the outside of is 0.3~0.7mm, the explosion-proof valve (2) be located at the part thickness 0.1 inside indentation (10)~
0.3mm, the explosion-proof valve (2) be located at indentation (10) with a thickness of 0.05~0.1mm.
6. a kind of power battery cover board according to claim 1, it is characterised in that: the bracket (6) is by Jiong shape bar
(601) it is formed with cross bar (602), Jiong shape bar (601) side symmetrically offers two groups of spliced eyes (12), the cross bar
(602) it is equipped with grafting block (13) corresponding with spliced eye (12), Jiong shape bar (601) center is equipped with and anticorrosion gummed paper
(3) corresponding raised (11).
7. a kind of power battery cover board according to claim 6, it is characterised in that: the center of the protrusion (11) opens up
There are at least five groups of strip-shaped holes (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522387.1A CN109449324A (en) | 2018-12-13 | 2018-12-13 | A kind of power battery cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811522387.1A CN109449324A (en) | 2018-12-13 | 2018-12-13 | A kind of power battery cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109449324A true CN109449324A (en) | 2019-03-08 |
Family
ID=65556949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811522387.1A Pending CN109449324A (en) | 2018-12-13 | 2018-12-13 | A kind of power battery cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109449324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022108797A1 (en) | 2022-04-11 | 2023-10-12 | Volkswagen Aktiengesellschaft | Battery with bursting element |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324479A (en) * | 2011-09-23 | 2012-01-18 | 奇瑞汽车股份有限公司 | Anti-explosion valve for power lithium ion battery |
| CN202142595U (en) * | 2011-06-29 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | High-capacity Lithium ion battery anti-explosion valve |
| CN202308122U (en) * | 2011-09-29 | 2012-07-04 | 力神迈尔斯动力电池系统有限公司 | Aluminum membrane type explosion-proof valve of high-capacity lithium ion battery |
| US20130149568A1 (en) * | 2011-12-12 | 2013-06-13 | Ningde Amperex Technology Limited | Power battery and anti-explosion device thereof |
| CN206098514U (en) * | 2016-10-17 | 2017-04-12 | 骆驼集团新能源电池有限公司 | Double safety valve power battery top cap and power battery |
| CN209000966U (en) * | 2018-12-13 | 2019-06-18 | 江西安驰新能源科技有限公司 | A kind of power battery cover board |
-
2018
- 2018-12-13 CN CN201811522387.1A patent/CN109449324A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142595U (en) * | 2011-06-29 | 2012-02-08 | 力神迈尔斯动力电池系统有限公司 | High-capacity Lithium ion battery anti-explosion valve |
| CN102324479A (en) * | 2011-09-23 | 2012-01-18 | 奇瑞汽车股份有限公司 | Anti-explosion valve for power lithium ion battery |
| CN202308122U (en) * | 2011-09-29 | 2012-07-04 | 力神迈尔斯动力电池系统有限公司 | Aluminum membrane type explosion-proof valve of high-capacity lithium ion battery |
| US20130149568A1 (en) * | 2011-12-12 | 2013-06-13 | Ningde Amperex Technology Limited | Power battery and anti-explosion device thereof |
| CN206098514U (en) * | 2016-10-17 | 2017-04-12 | 骆驼集团新能源电池有限公司 | Double safety valve power battery top cap and power battery |
| CN209000966U (en) * | 2018-12-13 | 2019-06-18 | 江西安驰新能源科技有限公司 | A kind of power battery cover board |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022108797A1 (en) | 2022-04-11 | 2023-10-12 | Volkswagen Aktiengesellschaft | Battery with bursting element |
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| PB01 | Publication | ||
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