CN202094202U - Exhaust type decompression device of lithium-ion battery with steel shell - Google Patents
Exhaust type decompression device of lithium-ion battery with steel shell Download PDFInfo
- Publication number
- CN202094202U CN202094202U CN2011201796674U CN201120179667U CN202094202U CN 202094202 U CN202094202 U CN 202094202U CN 2011201796674 U CN2011201796674 U CN 2011201796674U CN 201120179667 U CN201120179667 U CN 201120179667U CN 202094202 U CN202094202 U CN 202094202U
- Authority
- CN
- China
- Prior art keywords
- exhaust
- battery
- piston
- exhaust nozzle
- shell
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model aims to provide an exhaust type decompression device of lithium-ion battery with steel shell; the exhaust type decompression device comprises an exhaust nozzle arranged on the battery shell and an exhaust valve connected and matched with the exhaust nozzle; the exhaust valve comprises a cap-shaped shell, a piston and a spring; the lower end of the shell is fixedly connected with the exhaust nozzle; the piston is installed in the piston cavity of the shell; the side wall of the shell is provided with an exhaust hole on the travel of the piston; the spring is arranged in the piston cavity; one end of the spring is set against the piston and the other end of the spring bunts is set against the top of the inner wall of the shell. The utility model has the advantages that: the exhaust nozzle can be used as an injection hole in the battery production process and the problem that the large-size lithium-ion battery with steel shell is difficult to inject liquid is solved; the gas generated in the formulation process of the battery and the gas, generated when the battery is short-circuited, extruded and overcharged and the like, are timely exhausted via the exhaust nozzle and the exhaust valve; the utility model has the features of simple structure, easy assembling and low cost, can be used repeatedly and has no non-reversible damage to the battery.
Description
Technical field
The utility model belongs to the lithium ion battery field, relates to box hat lithium ion battery exhaust decompressor.
Background technology
Lithium ion battery is because advantages such as energy density height, good cycle, light environmental protection, more and more applied to electric tool, fields such as electric bicycle, electric automobile in the energy storage mode of lithium ion battery.The box hat lithium ion battery because perfect heat-dissipating, firm in structure, be easy to characteristics such as production, be widely used in the lithium-ion-power cell field.Yet because the technology that battery is made and the restriction of structure, if when causing danger such as battery in use overcharges, extruding, short circuit, inside battery produces a large amount of gases rapidly, and can't discharge, thereby causes battery explosion.Can the gas safety that the box hat inside lithium ion cell is produced be discharged, just become industry guarantee a cell safety difficult problem to be solved.
At present the safety device that the box hat lithium ion battery is commonly used mainly contains following two kinds: a kind of is punching press trace at a kind of certain depth of metal shell Surface Machining, when inside battery gas reaches certain pressure, the punching press trace can break automatically, explodes because of air pressure inside is too high to prevent battery.This punching press trace explosion-protection equipment may be inconsistent owing to punching press trace fracture pressure between cell because of the requirement on machining accuracy height, thereby cause battery pack as one man not work.Another kind is processing one deck rupture pressure disc on the explosionproof hole of metal-back, and when inside battery reaches the certain pressure electricity, gas breaks through rupture pressure disc, reach the purpose that prevents battery explosion, but this rupture pressure disc difficulty of processing is big, consistency is poor, is difficult to guarantee its action message.
More than two kinds of prior aries, its structure all is disposable, in case destroy, irrecoverable.Therefore need design a kind of safe and reliable, features simple structure, the exhaust apparatus that can control cell internal pressure has immediately just become to be badly in need of the difficult problem of solution.
Summary of the invention
The purpose of this utility model is that design is a kind of simple in structure, can discharge the device of the unnecessary gas of inside battery at any time.
The technical scheme that realizes above-mentioned purpose is: a kind of box hat lithium ion battery exhaust decompressor, it is characterized in that: comprise the exhaust nozzle that is provided with on the battery container and be connected the vent valve that cooperates being used to connect vent valve with exhaust nozzle, described vent valve comprises cap shape housing, piston and spring, fixedly connected with described exhaust nozzle in the housing lower end, piston is arranged in the plunger shaft of housing, housing sidewall is offered steam vent on the stroke of piston, spring is installed in the plunger shaft, the one end is replaced piston, and the other end is replaced the inner walls top.
Described exhaust nozzle is logical cylindrical in being, protrudes battery container, and between the positive and negative pole of battery, the inwall lower end of exhaust nozzle outer rim and described exhaust valve housing is provided with the screw thread that is fitted to each other.
The top of described exhaust valve housing also offers steam vent.
The beneficial effects of the utility model are: exhaust nozzle can use as liquid injection hole in battery manufacturing process, solves big model box hat lithium ion battery fluid injection difficult problem; Gas that battery produces in formation process and the gas that meets with short circuit, pushes, overcharges etc. and produce when dangerous when battery can be in time by exhaust nozzle and vent valve discharges.That the utility model also has is simple in structure, be easy to assemble, cheap characteristics, can reuse, and can not cause irreversible damage to battery.
Description of drawings
The box hat battery structure schematic diagram that is provided with the exhaust decompressor that Fig. 1 provides for embodiment.
The structural representation of the vent valve that Fig. 2 provides for embodiment.
Embodiment
The box hat lithium ion battery exhaust decompressor that present embodiment provides comprises exhaust nozzle that is provided with on the battery container and the vent valve that is connected cooperation with exhaust nozzle.As shown in Figure 1, the top of battery container 1 is provided with positive terminal 2 and negative terminal 4, is provided with exhaust nozzle 3 between positive and negative terminals, and exhaust nozzle 3 is logical cylindrical in being, and protrudes battery container, and exhaust nozzle 3 outer rims are provided with screw thread, are used to connect vent valve.As shown in Figure 2, vent valve comprises cap shape housing 5, piston 6 and spring 7, housing 5 inwall lower ends are provided with screw thread 51, piston 6 is arranged in the plunger shaft 52 of top of inner thread 51 of housing 5 (in order to realize the sealing between piston 6 outer rims and housing 5 inwalls, can on the inwall of housing 5, apply vacuum grease), housing 5 sidewalls are offered several steam vents 53 on the stroke of piston 6, a steam vent 54 is also offered at housing 5 tops, spring 7 is installed in the plunger shaft 52, the one end is replaced piston 6, and the other end is replaced housing 5 inwall tops.Vent valve is connected on the described exhaust nozzle by the internal thread of its housing 5.
The box hat lithium ion battery exhaust decompressor that the foregoing description provides in use, when the gas pressure of inside battery reaches certain value, then exert pressure to the piston 6 of vent valve by the through hole of exhaust nozzle, the elastic force that piston 6 overcomes spring 7 moves up, when the bottom of piston 6 surpasses steam vent 53 on housing 5 sidewalls, gas is promptly discharged outside batteries by steam vent 53, when the pressure of inside battery is consistent with extraneous pressure, piston 6 moves downwards under the bounce effect of external atmospheric pressure and spring 7, when the lower surface of piston 6 surpasses steam vent 53, piston 6 is the shutoff exhaust nozzle again, make inside battery and outside air isolated, thereby prevent that effectively extraneous air from entering battery container.
Claims (3)
1. box hat lithium ion battery exhaust decompressor, it is characterized in that: comprise the exhaust nozzle that is provided with on the battery container and be connected the vent valve that cooperates being used to connect vent valve with exhaust nozzle, described vent valve comprises cap shape housing, piston and spring, fixedly connected with described exhaust nozzle in the housing lower end, piston is arranged in the plunger shaft of housing, and housing sidewall is offered steam vent on the stroke of piston, and spring is installed in the plunger shaft, the one end is replaced piston, and the other end is replaced the inner walls top.
2. box hat lithium ion battery exhaust decompressor according to claim 1, it is characterized in that: described exhaust nozzle is logical cylindrical in being, protrude battery container, between the positive and negative pole of battery, the inwall lower end of exhaust nozzle outer rim and described exhaust valve housing is provided with the screw thread that is fitted to each other.
3. box hat lithium ion battery exhaust decompressor according to claim 2, it is characterized in that: the top of described exhaust valve housing also offers steam vent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011201796674U CN202094202U (en) | 2011-05-31 | 2011-05-31 | Exhaust type decompression device of lithium-ion battery with steel shell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011201796674U CN202094202U (en) | 2011-05-31 | 2011-05-31 | Exhaust type decompression device of lithium-ion battery with steel shell |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202094202U true CN202094202U (en) | 2011-12-28 |
Family
ID=45369250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011201796674U Expired - Lifetime CN202094202U (en) | 2011-05-31 | 2011-05-31 | Exhaust type decompression device of lithium-ion battery with steel shell |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202094202U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114142116A (en) * | 2020-08-14 | 2022-03-04 | 上海汽车集团股份有限公司 | Storage battery protection system |
-
2011
- 2011-05-31 CN CN2011201796674U patent/CN202094202U/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114142116A (en) * | 2020-08-14 | 2022-03-04 | 上海汽车集团股份有限公司 | Storage battery protection system |
CN114142116B (en) * | 2020-08-14 | 2024-05-24 | 上海汽车集团股份有限公司 | Storage battery protection system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201191627Y (en) | Safety valve of lithium ionic cell | |
CN201570531U (en) | Pressure release valve for lithium ion batteries | |
US12009486B2 (en) | Safe and high-energy USB rechargeable battery | |
CN202019008U (en) | Explosion-proof cover plate of lithium battery | |
CN201673952U (en) | Dual safety explosion-proof device of power lithium battery | |
CN201340866Y (en) | Lithium ion battery anti-exploding valve | |
CN104253255A (en) | Secondary explosion-proof device of storage battery | |
CN202094202U (en) | Exhaust type decompression device of lithium-ion battery with steel shell | |
CN102903866B (en) | Lithium ion battery | |
CN105977428B (en) | A kind of explosion-proof mobile power source nickel-metal hydride battery | |
CN201570530U (en) | Pressure-limiting valve for lithium ion batteries | |
CN202585131U (en) | Supercapacitor casing | |
JP2015185224A (en) | Sealed type battery | |
CN203589112U (en) | Explosion-proof valve device of battery cell | |
CN201918444U (en) | Explosion-proof cap of power-type lithium ion battery | |
CN214378738U (en) | Battery explosion-proof valve and lithium ion battery | |
CN201397835Y (en) | Safety valve structure of high-capacity lithium-ion traction battery | |
CN204243115U (en) | The anti-explosion safety end cover structure of lithium-ion-power cell | |
CN201233918Y (en) | Lithium battery top cap | |
CN203690385U (en) | Anti-explosion bolt and storage battery with same | |
CN202352747U (en) | Explosion-proof lithium battery cover plate with sealing ring | |
CN203659947U (en) | Vacuum sealing structure for lithium-ion power battery | |
CN203367376U (en) | Integral cover plate structure for lithium ion battery | |
CN208923259U (en) | It is a kind of can both ends explosion battery | |
CN203812930U (en) | Power cylinder type lithium ion battery safety cap |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: Xinqing District Doumen Xinqing Technology Industrial Park five road 519000 Guangdong city of Zhuhai Province Patentee after: Zhuhai Penghui Energy Co. Ltd. Address before: Xinqing District Doumen Xinqing Technology Industrial Park five road 519000 Guangdong city of Zhuhai Province Patentee before: GreatPower Battry (Zuhai) Co., Ltd. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20111228 |