CN201796965U - Explosion-proof cap for lithium ion power battery - Google Patents
Explosion-proof cap for lithium ion power battery Download PDFInfo
- Publication number
- CN201796965U CN201796965U CN2010202209076U CN201020220907U CN201796965U CN 201796965 U CN201796965 U CN 201796965U CN 2010202209076 U CN2010202209076 U CN 2010202209076U CN 201020220907 U CN201020220907 U CN 201020220907U CN 201796965 U CN201796965 U CN 201796965U
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- China
- Prior art keywords
- explosion
- lithium ion
- power battery
- ion power
- cover plate
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- 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.)
- Expired - Fee Related
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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)
Abstract
The utility model belongs to the technical field of lithium ion batteries, and relates to an explosion-proof cap for a lithium ion power battery, which comprises an explosion-proof membrane and a cap plate provided with an explosion-proof hole. The explosion-proof cap for the lithium ion power battery is characterized in that a rubber seal plug is arranged at the explosion-proof hole of the cap plate, and a pressure spring is connected and mounted on the rubber seal plug. The explosion-proof cap for the lithium ion power battery has the advantages of novel structure, compact assembly, convenience in processing, low probability of leakage, good explosion-proof protection effect, long battery service life, high class of safety, and wide application range.
Description
Technical field
The utility model belongs to technical field of lithium ion, particularly relates to a kind of lithium ion power battery explosion protection cover.
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 industrial production and the daily life.Existing lithium ion power battery explosion protection cover 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 with the aluminium film of electrolyte reaction, softer because of the aluminium film body again, 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 utility model provides a kind of lithium ion power battery explosion protection cover for solving the technical problem that exists in the known technology.
The purpose of this utility model provides a kind of 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, the lithium ion power battery explosion protection cover of characteristics such as applied widely.
The technical scheme that the utility model lithium ion power battery explosion protection cover is taked is:
A kind of lithium ion power battery explosion protection cover comprises cover plate and rupture pressure disc, and cover plate is provided with explosionproof hole, is characterized in: cover plate explosionproof hole place is provided with rubber seal plug, and rubber seal connects beyond the Great Wall is equipped with compression spring.
The utility model lithium ion power battery explosion protection cover can also adopt following technical scheme:
Described lithium ion power battery explosion protection cover is characterized in: the cover plate explosionproof hole is a φ 6-φ 12mm circular hole.
Described lithium ion power battery explosion protection cover is characterized in: the cover plate explosionproof hole is positioned at cover plate heavy stand bottom.
Described lithium ion power battery explosion protection cover is characterized in: compression spring is the turriform spring.
Described lithium ion power battery explosion protection cover is characterized in: turriform spring and rubber seal plug junction are provided with the sealing plug gland.
Described lithium ion power battery explosion protection cover is characterized in: 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.
Described lithium ion power battery explosion protection cover 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 cover is characterized in: described lithium ion power battery explosion protection cover is housed between explosion diaphragm pedestal and cover plate, is characterized in: explosion diaphragm pedestal and bridge welding are connected together.
Advantage and the good effect that the utlity model has are:
Lithium ion power battery explosion protection cover is owing to adopted the utility model brand-new technology scheme, compared with prior art, when this block electrokinetic cell causes in the battery gas expansion when battery overcharge or other reason, rubber seal plug is opened, air-flow backs down explosion-proof diaphragm, overflow gas, reach purpose of safety.The utlity model has 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, 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 the lithium ion power battery explosion protection cover structural representation.
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 utility model content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
A kind of lithium ion power battery explosion protection cover 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 dark platform 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 seal its pressure with cell cover plate 1 heavy stand edge 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 plays safety effect.
Tower spring 4 can increase the motion space of rubber seal plug 2 in device, prevent straight shape spring since behind the liquid crystalization spring stuck phenomenon that causes take place, rubber seal plug 2 move under air pressure freely or the drawback of being failure to actuate.
In explosion diaphragm pedestal 9; explosion lining 6 has been installed successively; explosion diaphragm 5; seal soft aluminium 7 and outer protection rubber membrane 8; 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
Excessive in order to prevent battery liquid when explosion diaphragm pedestal 9 is installed on the battery case upper cover plate 1, a rubber seal 3 is installed in both junctions, both are 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.
This lithium ion power battery explosion protection cover has novel structure, installs compactly, and easy to process, 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.
Claims (9)
1. a lithium ion power battery explosion protection cover comprises cover plate and rupture pressure disc, and cover plate is provided with explosionproof hole, it is characterized in that: cover plate explosionproof hole place is provided with rubber seal plug, and rubber seal connects beyond the Great Wall is equipped with compression spring.
2. lithium ion power battery explosion protection cover according to claim 1 is characterized in that: the cover plate explosionproof hole is a φ 6-φ 12mm circular hole.
3. lithium ion power battery explosion protection cover according to claim 1 and 2 is characterized in that: the cover plate explosionproof hole is positioned at cover plate heavy stand bottom.
4. lithium ion power battery explosion protection cover according to claim 1 and 2 is characterized in that: compression spring is the turriform spring.
5. lithium ion power battery explosion protection cover according to claim 4 is characterized in that: turriform spring and rubber seal plug junction are provided with the sealing plug gland.
6. lithium ion power battery explosion protection cover according to claim 1 and 2 is characterized in that: 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.
7. lithium ion power battery explosion protection cover according to claim 6 is characterized in that: explosion diaphragm pedestal, explosion lining and seal soft aluminium top outer protection rubber membrane is housed.
8. lithium ion power battery explosion protection cover according to claim 6 is characterized in that: between explosion diaphragm pedestal and cover plate rubber seal is housed.
9. lithium ion power battery explosion protection cover according to claim 6 is characterized in that: explosion diaphragm pedestal and bridge welding are connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202209076U CN201796965U (en) | 2010-06-10 | 2010-06-10 | Explosion-proof cap for lithium ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202209076U CN201796965U (en) | 2010-06-10 | 2010-06-10 | Explosion-proof cap for lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796965U true CN201796965U (en) | 2011-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202209076U Expired - Fee Related CN201796965U (en) | 2010-06-10 | 2010-06-10 | Explosion-proof cap for lithium ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201796965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867026A (en) * | 2010-06-10 | 2010-10-20 | 天津佰特瑞电子有限公司 | Lithium ion power battery explosion protection cover |
| EP2709191A4 (en) * | 2012-03-28 | 2015-08-19 | Optnics Prec Co Ltd | Safety valve and electrochemical element |
-
2010
- 2010-06-10 CN CN2010202209076U patent/CN201796965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867026A (en) * | 2010-06-10 | 2010-10-20 | 天津佰特瑞电子有限公司 | Lithium ion power battery explosion protection cover |
| EP2709191A4 (en) * | 2012-03-28 | 2015-08-19 | Optnics Prec Co Ltd | Safety valve and electrochemical element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20140610 |