CN203536491U - Safety valve of power battery - Google Patents
Safety valve of power battery Download PDFInfo
- Publication number
- CN203536491U CN203536491U CN201320595851.6U CN201320595851U CN203536491U CN 203536491 U CN203536491 U CN 203536491U CN 201320595851 U CN201320595851 U CN 201320595851U CN 203536491 U CN203536491 U CN 203536491U
- Authority
- CN
- China
- Prior art keywords
- valve body
- pressure
- battery
- safety valve
- cover plate
- 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 - Fee Related
Links
- 238000012856 packing Methods 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000004880 explosion Methods 0.000 abstract description 5
- 208000032953 Device battery issue Diseases 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
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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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a safety valve of a power battery. The safety valve comprises a valve body connected into a battery cover plate, wherein an outlet at the upper end of the valve body is provided with a cover plate, an elastic sealing ball is placed into the inner cavity of the valve body and is in sealing fit with the valve body, and the side wall at the upper part of the valve body is provided with an air escape orifice, thus a small pressure-lossless air escape structure is formed. When the pressure inside the battery is gradually raised, but is not up to an explosion value, the elastic sealing ball can be upwards ejected and decompressed to deform under the action of air pressure, the sealing effect is in temporary failure, gas is escaped in time to reduce pressure, and then, the elastic sealing ball can be automatically rebounded for sealing. If the condition that the pressure is raised at a high speed happens, the elastic sealing ball and the cover plate can be simultaneously ejected and separated from the valve body under the action of the air pressure, so that the pressure is rapidly released, and the battery is prevented from exploding. The safety valve is reasonable in structure, capable of releasing pressure in time, high in safety, reusable under a non-explosion condition, and capable of avoiding unnecessary battery failure.
Description
Technical field: the utility model relates to the safety valve that a kind of electrokinetic cell is used.
Background technology: electrokinetic cell is in use if there is abnormal conditions, and internal pressure may raise rapidly, even blast.In order to improve the safety in utilization of electrokinetic cell, generally need to be on battery cover board mounting safety valve.But common safety valve adopts rupture pressure disc structure more, the price of rupture pressure disc is high, easily punctures inefficacy in production and application process, can only disposablely use, for internal pressure, raise but also do not reach the situation of blast value, rupture pressure disc pressure release in time, battery easily plays drum and is out of shape.And pressure not excretion can be accumulate to rupture pressure disc explosion, not only affect safety, also cause the unnecessary inefficacy of battery.
Summary of the invention: for the deficiencies in the prior art, the utility model provides the power battery safety valve of pressure release in time in a kind of use.
The utility model comprises the valve body being connected in battery cover board, the exit, upper end of valve body is provided with cover plate, in the inner chamber of valve body, be placed with elastic packing ball and be sealed and matched, and be provided with disappointing aperture in the upper portion side wall of valve body, form the harmless bleed structure of little pressure.
The utility model raises gradually and not yet reaches while detonating value at cell internal pressure, and air pressure can be by top compression on elastic packing ball, and sealing was temporarily lost efficacy, and made gas leak in time step-down, and after pressure decreased, elastic packing ball can automatic rebounding sealing.Situation about raising rapidly if there is pressure, air pressure can back down disengaging valve body together with cover plate by elastic packing ball, and pressure is drained rapidly, avoids battery explosion.Of the present utility model rational in infrastructure, pressure release in time, safe, in the situation of not detonating, can reuse, avoid the unnecessary inefficacy of battery.
Below in conjunction with drawings and Examples, further illustrate the utility model.
Accompanying drawing explanation: Fig. 1 is the main structure schematic diagram of embodiment.
Fig. 2 is the decomposing schematic representation of embodiment.
Fig. 3 is the pressure release schematic diagram of Fig. 1.
Fig. 4 is the schematic diagram that detonates of Fig. 1.
Embodiment: as depicted in figs. 1 and 2, valve body 1 is connected in battery cover board 6, the exit, upper end of valve body 1 is provided with cover plate 2, in the inner chamber of valve body 1, being placed with elastic packing ball 3 is sealed and matched, and in the upper portion side wall of valve body 1, be provided with the aperture 4 that loses heart, form the harmless bleed structure of little pressure.The general aperture 4 that loses heart has a plurality of, and uniform ring is around the upper portion side wall that is distributed in valve body 1, and pressure release is effective.Conventionally in the lower end of valve body 1 import department, be also provided with ventilative every liquid sheet 5, pressed gas by the electrolyte that can block in battery spill.
Under normal circumstances, elastic packing ball 3 can seal with valve body 1 inner chamber favorable elasticity battery.When cell internal pressure raises, as shown in Figure 3, air pressure can be by top compression on elastic packing ball 3, and sealing was temporarily lost efficacy, and pressed gas can leak step-down by the aperture 4 that loses heart in time.After pressure decreased, elastic packing ball 3 automatic elastics are replied, and sealing comes into force, and battery and safety valve can continue to use.
If there is the cell internal pressure situation that raises rapidly, the throughput of leaking from the aperture 4 that loses heart is not enough to decompression, as shown in Figure 4, air pressure can back down elastic packing ball 3 to detonate together with cover plate 2 and depart from valve body 1, the upper end outlet of valve body 1 is opened, and pressure is drained rapidly, avoids battery explosion.
Claims (3)
1. a power battery safety valve, comprise the valve body being connected in battery cover board, it is characterized by: the exit, upper end of valve body (1) is provided with cover plate (2), in the inner chamber of valve body (1), being placed with elastic packing ball (3) is sealed and matched, and in the upper portion side wall of valve body (1), be provided with disappointing aperture (4), form the harmless bleed structure of little pressure.
2. power battery safety valve according to claim 1, is characterized by: the lower end import department of valve body (1) is provided with ventilative every liquid sheet (5).
3. power battery safety valve according to claim 1 and 2, is characterized by: described disappointing aperture (4) has a plurality of, and uniform ring is around the upper portion side wall that is distributed in valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595851.6U CN203536491U (en) | 2013-09-26 | 2013-09-26 | Safety valve of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595851.6U CN203536491U (en) | 2013-09-26 | 2013-09-26 | Safety valve of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536491U true CN203536491U (en) | 2014-04-09 |
Family
ID=50422668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595851.6U Expired - Fee Related CN203536491U (en) | 2013-09-26 | 2013-09-26 | Safety valve of power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536491U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979590A (en) * | 2015-07-12 | 2015-10-14 | 陈卡丹 | Explosion-proof early-warning lithium battery |
| CN107634162A (en) * | 2017-09-11 | 2018-01-26 | 惠州市蓝微新源技术有限公司 | A kind of battery bag body structure of liquid-leakage preventing |
| CN109140228A (en) * | 2017-06-28 | 2019-01-04 | 李国栋 | Explosion-proof dehumidification type center pipe network system |
| CN109138775A (en) * | 2017-06-28 | 2019-01-04 | 李国栋 | Explosion-proof type maintenance door |
| WO2022246840A1 (en) * | 2021-05-28 | 2022-12-01 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery and electrical device |
| WO2023097871A1 (en) * | 2021-11-30 | 2023-06-08 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and device therefor, battery, and electrical apparatus |
-
2013
- 2013-09-26 CN CN201320595851.6U patent/CN203536491U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979590A (en) * | 2015-07-12 | 2015-10-14 | 陈卡丹 | Explosion-proof early-warning lithium battery |
| CN107293801A (en) * | 2015-07-12 | 2017-10-24 | 陈卡丹 | The explosion-proof method for early warning of lithium battery |
| CN104979590B (en) * | 2015-07-12 | 2018-05-18 | 陈卡丹 | Explosion-proof early warning lithium battery |
| CN109140228A (en) * | 2017-06-28 | 2019-01-04 | 李国栋 | Explosion-proof dehumidification type center pipe network system |
| CN109138775A (en) * | 2017-06-28 | 2019-01-04 | 李国栋 | Explosion-proof type maintenance door |
| CN107634162A (en) * | 2017-09-11 | 2018-01-26 | 惠州市蓝微新源技术有限公司 | A kind of battery bag body structure of liquid-leakage preventing |
| CN107634162B (en) * | 2017-09-11 | 2023-10-24 | 惠州市蓝微新源技术有限公司 | Battery package box structure of leak protection liquid |
| WO2022246840A1 (en) * | 2021-05-28 | 2022-12-01 | 宁德时代新能源科技股份有限公司 | End cap assembly, battery cell, battery and electrical device |
| CN116114110A (en) * | 2021-05-28 | 2023-05-12 | 宁德时代新能源科技股份有限公司 | End cover assembly, battery monomer, battery and electric equipment |
| JP2023531129A (en) * | 2021-05-28 | 2023-07-21 | 寧徳時代新能源科技股▲分▼有限公司 | End Cap Assemblies, Single Cells, Batteries and Powered Devices |
| JP7515615B2 (en) | 2021-05-28 | 2024-07-12 | 寧徳時代新能源科技股▲分▼有限公司 | End cap assembly, battery unit, battery and power-using device |
| WO2023097871A1 (en) * | 2021-11-30 | 2023-06-08 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and device therefor, battery, and electrical apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170801 Address after: Ji Tong Road Huaqiao Economic Development Zone Kunshan city Jiangsu province 215332 No. 699 Patentee after: Suzhou torch Communication Computer Technology Co., Ltd. Address before: The Kunshan Huaqiao Economic Development Zone Suzhou city Jiangsu province Tong Road 215332 No. 699 Patentee before: Wang Wenlin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20180926 |