CN101867028B - Lithium ion power battery explosion protection device - Google Patents
Lithium ion power battery explosion protection device Download PDFInfo
- Publication number
- CN101867028B CN101867028B CN201010196001XA CN201010196001A CN101867028B CN 101867028 B CN101867028 B CN 101867028B CN 201010196001X A CN201010196001X A CN 201010196001XA CN 201010196001 A CN201010196001 A CN 201010196001A CN 101867028 B CN101867028 B CN 101867028B
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- Prior art keywords
- explosion
- cover plate
- lithium ion
- explosion protection
- power battery
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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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- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a lithium ion power battery explosion protection device, belonging to the technical field of the lithium ion battery. The lithium ion power battery explosion protection device comprises a cover plate and an explosion-protection film. The lithium ion power battery explosion protection device is characterized in that the cover plate is provided with an explosion protection film base, the explosion protection film base is provided with an explosion protection lining, sealing soft aluminum and an explosion protection film, and the explosion protection film is firmly assembled together with the explosion protection film base, the explosion protection lining and the sealing soft aluminum. The lithium ion power battery explosion protection device has novel structure, high safety level and good explosion protection effect, is assembled compactly, is convenient to process and not easy to leak electrolyte and can ensure that the lithium ion power battery has long service life, thereby having wide application range.
Description
Technical field
The invention belongs to technical field of lithium ion, particularly relate to a kind of lithium ion power battery explosion protection device.
Background technology
At present, characteristics such as lithium ion battery has that volume is little, in light weight, electric weight is strong, memoryless, environmental protection are widely used in electric tool, power vehicle, electronic equipment and the daily life.Existing lithium ion power battery explosion protection device comprises cover plate and rupture pressure disc, and cover plate is provided with explosionproof hole.The available dynamic battery is done rupture disk with the red copper foil film can play the safety anti-explosive effect; But red copper foil film and battery electrolyte are easy to generate corrosion; So there is potential safety hazard, with not making rupture disk, softer because of the aluminium film body again with the aluminium film of electrolyte reaction; In electrokinetic cell motion or operational vibration process, be easy to generate damage.Be designed to generally that now aluminium film two ends are respectively added a diaphragm (PFA) and make, exist the cost of manufacture height, can not repair, and outward appearance is very poor, shortcoming such as leakage has easily directly reduced the performance rate of battery, has potential safety hazard, even can cause a serious accident etc.
Summary of the invention
The present invention provides a kind of lithium ion power battery explosion protection device for solving the technical problem that exists in the known technology.
The purpose of this invention is to provide a kind of novel structure, assembling is compact, and is easy to process, easy-to-leak liquid not, and explosive-proof protector is good, and battery life is long, safe class height, the lithium ion power battery explosion protection device of characteristics such as applied widely.
The technical scheme that lithium ion power battery explosion protection device of the present invention is taked is:
A kind of lithium ion power battery explosion protection device; Comprise cover plate and rupture pressure disc; Be characterized in: cover plate is provided with explosion diaphragm pedestal; Explosion diaphragm pedestal is provided with explosion lining, sealing soft aluminium and explosion diaphragm, and the explosion diaphragm is by explosion diaphragm pedestal, explosion lining and seal that soft aluminium is fastening to fit together.
Lithium ion power battery explosion protection device of the present invention can also adopt following technical scheme:
Described lithium ion power battery explosion protection device is characterized in: explosion diaphragm pedestal, explosion lining and seal soft aluminium top outer protection rubber membrane is housed.
Described lithium ion power battery explosion protection device is characterized in: between explosion diaphragm pedestal and cover plate rubber seal is housed.
Described lithium ion power battery explosion protection device is characterized in: explosion diaphragm pedestal and bridge welding are connected together.
Described lithium ion power battery explosion protection device is characterized in: cover plate explosionproof hole place, explosion diaphragm pedestal bottom is provided with rubber seal plug, and rubber seal connects beyond the Great Wall is equipped with compression spring.
Described lithium ion power battery explosion protection device is characterized in: the cover plate explosionproof hole is a φ 6-φ 12mm circular hole.
Described lithium ion power battery explosion protection device is characterized in: the cover plate explosionproof hole is positioned at cover plate heavy stand bottom.
Described lithium ion power battery explosion protection device is characterized in: compression spring is the turriform spring.
Described lithium ion power battery explosion protection device is characterized in: turriform spring and rubber seal plug junction are provided with the sealing plug gland.
Advantage and good effect that the present invention has are:
The lithium ion power battery explosion protection device is owing to adopted brand-new technology scheme of the present invention; Compared with prior art; When this block electrokinetic cell causes battery in the gas expansion when battery overcharge or other reason, the rubber seal plug unlatching, air-flow backs down explosion-proof diaphragm; Overflow gas, reach purpose of safety.The present invention has novel structure, and assembling is compact, and is easy to process, easy-to-leak liquid not, and explosive-proof protector is good, and battery life is long, safe class height, advantage such as applied widely.Also the speed that gas is gone out diaphragm can be postponed simultaneously, the too fast harm that causes when going out can be effectively reduced because of diaphragm explosion gas.
Description of drawings
Fig. 1 is a lithium ion power battery explosion protection apparatus structure sketch map.
Among the figure, 1. upper cover plate, 2. rubber seal plug, 3. rubber seal, 4. turriform spring, 5. explosion diaphragm, 6. explosion lining, 7. admire aluminium, 8. rubber membrane, 9. explosion diaphragm pedestal, 10. sealing plug gland of sealing.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
A kind of lithium ion power battery explosion protection device comprises cover plate and rupture pressure disc, and cover plate is provided with explosionproof hole.The cover plate explosionproof hole is positioned at cover plate heavy stand bottom, is φ 6-φ 12mm circular hole, and cover plate explosionproof hole place is provided with rubber seal plug, and rubber seal connects beyond the Great Wall is equipped with the turriform compression spring.Turriform spring and rubber seal plug junction are provided with sealing plug gland 10.
Cover plate is provided with explosion-proof diaphragm, and explosion-proof diaphragm is by explosion diaphragm pedestal, explosion lining and seal soft aluminium and fit together.Explosion diaphragm pedestal, explosion lining and seal soft aluminium top outer protection rubber membrane is housed.Between explosion diaphragm pedestal and cover plate rubber seal is housed.Explosion diaphragm pedestal and bridge welding are connected together.
The concrete assembly structure of present embodiment:
Lithium-ion-power cell Stainless Steel Shell upper cover plate 1; The heavy stand that draws dark φ 8-φ 24 dark 5-10mm at upper cover plate 1; Hole at a φ 6-of heavy stand bottom punching out φ 12; In the hole, install one and the rubber seal plug 2 of any reaction does not take place with electrolyte; Rubber seal plug 2 is installed for 10 times and is compressed at turriform spring 4 and sealing plug gland and be adjusted into below the battery explosion diaphragm 5 explosion values, and force value can transfer to and both kept diaphragm not to be hit and can guarantee that when gas is excessive diaphragm normally pops, and play safety effect with cell cover plate 1 heavy stand edge its pressure of sealing.
In explosion diaphragm pedestal 9; Explosion lining 6 has been installed successively; Explosion diaphragm 5 seals soft aluminium 7 and outer protection rubber membrane 8, and the explosion diaphragm selects for use fine aluminium to make; Seal soft aluminium 7 and be the mold insert material of when encapsulation explosion diaphragm 5, using, when encapsulation, utilize the platform that oppositely colludes at two bending B1 places to make the soft aluminium 7 of the sealing of inlaying can be because of not vibrating.Seal soft aluminium utilizes explosion lining 6B2 again in pressing the embedding process forward simultaneously and collude platform and push down explosion lining 6, under the force value of stipulating, normally pop to guarantee explosion diaphragm 5 with fixing explosion lining 6
To be installed in 1 last time of battery case upper cover plate excessive in order to prevent battery liquid when explosion diaphragm pedestal 9, and a rubber seal 3 is installed in both junctions, both welded with laser welding at the C place simultaneously.
Outer protection rubber membrane 8 has played dustproof, anti-foreign matter to explosion diaphragm 5 at this device and has touched corrosive liquids and the air safeguard protection effect to the erosion of diaphragm that injures; Outer 8 of rubber membranes of protection also can break under specified air pressure; Both guaranteed explosion diaphragm 5 under gas pressure during explosion because of outside the value of breaking of protection rubber 8 regulations to be lower than the explosion value of explosion diaphragm defined; Therefore can guarantee normally popping of explosion diaphragm 5; Because protect the material behavior of rubber membrane 8 outward, can postpone the speed that gas is gone out diaphragm.
Advantages such as this lithium ion power battery explosion protection device has novel structure, and compactness is installed, and easy to process, explosive-proof protector is good, and battery life is long, and safe class is high, and is applied widely.Also the speed that gas is gone out diaphragm can be postponed simultaneously, the too fast harm that causes when going out can be effectively reduced because of diaphragm explosion gas.
Claims (1)
1. lithium ion power battery explosion protection device; Comprise cover plate and rupture pressure disc; It is characterized in that: cover plate is provided with explosion diaphragm pedestal; Explosion diaphragm pedestal is provided with explosion lining, sealing soft aluminium and explosion diaphragm, and the explosion diaphragm is by explosion diaphragm pedestal, explosion lining and seal that soft aluminium is fastening to fit together; Described explosion diaphragm pedestal, explosion lining and seal soft aluminium top outer protection rubber membrane is housed; Between explosion diaphragm pedestal and cover plate rubber seal is housed; Explosion diaphragm pedestal and bridge welding are connected together; Cover plate explosionproof hole place, explosion diaphragm pedestal bottom is provided with rubber seal plug, and rubber seal connects beyond the Great Wall is equipped with compression spring; Described cover plate explosionproof hole is φ 6-φ 12 mm circular holes; The cover plate explosionproof hole is positioned at cover plate heavy stand bottom; Compression spring is the turriform spring, and turriform spring and rubber seal plug junction are provided with the sealing plug gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010196001XA CN101867028B (en) | 2010-06-10 | 2010-06-10 | Lithium ion power battery explosion protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010196001XA CN101867028B (en) | 2010-06-10 | 2010-06-10 | Lithium ion power battery explosion protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101867028A CN101867028A (en) | 2010-10-20 |
| CN101867028B true CN101867028B (en) | 2012-11-21 |
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ID=42958658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010196001XA Expired - Fee Related CN101867028B (en) | 2010-06-10 | 2010-06-10 | Lithium ion power battery explosion protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101867028B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123179B (en) * | 2016-11-29 | 2020-02-18 | 德阳九鼎智远知识产权运营有限公司 | Power battery of electric automobile |
| CN108711601B (en) * | 2018-06-12 | 2024-05-10 | 惠州市龙源科技有限公司 | Explosion-proof grease proofing power battery relief valve |
| EP4300654A1 (en) * | 2022-05-16 | 2024-01-03 | Contemporary Amperex Technology Co., Limited | End cover, battery cell, battery, and electric device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543211Y (en) * | 2002-05-30 | 2003-04-02 | 江苏海四达集团有限公司 | Safety antiexplosion device for lithium ion cell |
| CN101170167A (en) * | 2006-10-27 | 2008-04-30 | 深圳市比克电池有限公司 | Explosion-proof covering board component |
| CN201104324Y (en) * | 2007-07-12 | 2008-08-20 | 深圳市比克电池有限公司 | Secondary battery cover plate component and secondary battery adopting the same |
| CN201673953U (en) * | 2010-06-10 | 2010-12-15 | 天津佰特瑞电子有限公司 | Explosion-proof device of Li-ion power battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2974989B2 (en) * | 1997-10-02 | 1999-11-10 | 三桜工業株式会社 | Battery safety valve |
| JP2000208023A (en) * | 1999-01-18 | 2000-07-28 | Hosiden Corp | Explosion-proof protection device with fuse function, rechargeable battery using same, and portable electronic apparatus using the rechargeable battery |
-
2010
- 2010-06-10 CN CN201010196001XA patent/CN101867028B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543211Y (en) * | 2002-05-30 | 2003-04-02 | 江苏海四达集团有限公司 | Safety antiexplosion device for lithium ion cell |
| CN101170167A (en) * | 2006-10-27 | 2008-04-30 | 深圳市比克电池有限公司 | Explosion-proof covering board component |
| CN201104324Y (en) * | 2007-07-12 | 2008-08-20 | 深圳市比克电池有限公司 | Secondary battery cover plate component and secondary battery adopting the same |
| CN201673953U (en) * | 2010-06-10 | 2010-12-15 | 天津佰特瑞电子有限公司 | Explosion-proof device of Li-ion power battery |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-208023A 2000.07.28 |
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| Publication number | Publication date |
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| CN101867028A (en) | 2010-10-20 |
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