CN204088403U - A kind of lithium ion battery cover pressure relief - Google Patents
A kind of lithium ion battery cover pressure relief Download PDFInfo
- Publication number
- CN204088403U CN204088403U CN201420518011.4U CN201420518011U CN204088403U CN 204088403 U CN204088403 U CN 204088403U CN 201420518011 U CN201420518011 U CN 201420518011U CN 204088403 U CN204088403 U CN 204088403U
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- CN
- China
- Prior art keywords
- pressure relief
- relief valve
- lithium ion
- ion battery
- battery cover
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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 discloses a kind of lithium ion battery cover pressure relief, it comprises lug, pressure relief valve, sealing rubber, cap head, seal ring, described lug is arranged on pressure relief valve lower end, described sealing rubber is arranged on pressure relief valve top, described cap head is arranged on top, and lug, pressure relief valve, cap head are packaged together by described seal ring.Compared with prior art, a kind of lithium ion battery cover pressure relief of the utility model is due to the resistance transition by rubber perforate, avoid cell and produce spark electrostatic because electrolyte during short circuit pressure release directly externally sprays from pressure relief valve tearing port and rubs, solve hidden danger on fire, ensure that the safety in utilization of battery pack.
Description
[technical field]
The utility model relates to field of lithium ion battery, particularly relates to a kind of lithium ion battery cover pressure relief.
[background technology]
The lithium ion battery taking cylinder type lithium battery as representative is more and more extensive in the application of all conglomeraties, such as electric automobile, the communication field such as energy storage, portable power source.
As everyone knows, ion battery group is mainly by string, mode in parallel forms rated voltage and capacity, a lot of cell can be used in one Battery pack group, the quality of each cell is directly connected to quality and the operating state of whole battery pack, if some cells cause the hurried rising of temperature because of internal short circuit fault, cell internal pressure can be made to increase at once, once pressure exceedes safety value, the pressure relief valve being arranged on cell positive pole can be opened and carry out pressure release, to avoid blast, but now, inside battery electrolyte also can spray thereupon, and the electrolyte of ejection is once produce spark electrostatic with pressure relief valve tearing port high-speed friction, hidden danger on fire will be there is, very large to the threat of battery pack and terminal equipment.
In view of above drawback, be necessary to provide a kind of lithium ion battery cover pressure relief to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide a kind of lithium ion battery cover pressure relief, the hidden danger on fire when it effectively eliminates battery pressure release.
To achieve these goals, the utility model adopts following technical scheme: a kind of lithium ion battery cover pressure relief, it comprises lug, pressure relief valve, sealing rubber, cap head, seal ring, described lug is arranged on pressure relief valve lower end, described sealing rubber is arranged on pressure relief valve top, described cap head is arranged on top, and lug, pressure relief valve, cap head are packaged together by described seal ring.
One as a kind of lithium ion battery cover pressure relief of the utility model is improved, and described sealing quality of rubber materials is the rubber of good flame resistance, good corrosion resistance, and what adopt in the present embodiment is PVC rubber.
One as a kind of lithium ion battery cover pressure relief of the utility model is improved, and the inclined marginal position of described sealing rubber has leakage opening, staggers pressure relief valve position in hole site.
When certain cell causes the hurried rising of temperature because of internal short circuit fault and exceedes safety value, pressure relief valve can be torn because pressure is large and open, inside battery electrolyte can enter the space of sealing rubber containing from pressure relief valve tearing port, and from the leakage opening ejection that sealing rubber is opened, by the resistance transition of rubber perforate, avoid friction when electrolyte directly externally sprays from pressure relief valve tearing port and produce spark electrostatic, solve hidden danger on fire, ensure that the safety in utilization of battery pack.
[accompanying drawing explanation]
Fig. 1 is the overall diagram of a kind of lithium ion battery cover pressure relief of the utility model;
Fig. 2 is the block cutaway view of a kind of lithium ion battery cover pressure relief of the utility model.
[embodiment]
Please refer to shown in Fig. 1, Fig. 2, below in conjunction with case study on implementation, the utility model is described in further detail.
A kind of lithium ion battery cover pressure relief of the utility model, it comprises lug 13, pressure relief valve 14, sealing rubber 20, cap head 11, seal ring 12, described lug 13 is arranged on pressure relief valve 14 lower end, described sealing rubber 20 is arranged on pressure relief valve 14 top, described cap head 11 is arranged on top, and lug 13, pressure relief valve 14, cap head 11 are packaged together by described seal ring 12.
When certain cell causes the hurried rising of temperature because of internal short circuit fault and exceedes safety value, pressure relief valve 14 can be torn because pressure is large and open, inside battery electrolyte can enter the space of sealing rubber 20 containing from pressure relief valve 14 tearing port, and spray from the leakage opening 21 that sealing rubber 20 is opened, by the resistance transition of leakage opening 21, avoid friction when electrolyte directly externally sprays from pressure relief valve 14 tearing port and produce spark electrostatic, solve hidden danger on fire, ensure that the safety in utilization of battery pack.
A kind of lithium ion battery cover pressure relief of the utility model, be not restricted to described in specification and execution mode, therefore additional advantage and amendment can easily be realized for the personnel of familiar field, therefore when not deviating from the spirit and scope of the universal that claim and equivalency range limit, the utility model is not limited to specific details, representational equipment and illustrates here and the examples shown described.
Claims (3)
1. a lithium ion battery cover pressure relief, it comprises lug, pressure relief valve, sealing rubber, cap head, seal ring, it is characterized in that: described lug is arranged on pressure relief valve lower end, described sealing rubber is arranged on pressure relief valve top, described cap head is arranged on top, and lug, pressure relief valve, cap head are packaged together by described seal ring.
2. a kind of lithium ion battery cover pressure relief according to claim 1, is characterized in that: described sealing quality of rubber materials is the rubber of good flame resistance, good corrosion resistance, and what adopt in the present embodiment is PVC rubber.
3. a kind of lithium ion battery cover pressure relief according to claim 1, is characterized in that: the inclined marginal position of described sealing rubber has leakage opening, staggers pressure relief valve position in hole site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420518011.4U CN204088403U (en) | 2014-08-29 | 2014-08-29 | A kind of lithium ion battery cover pressure relief |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420518011.4U CN204088403U (en) | 2014-08-29 | 2014-08-29 | A kind of lithium ion battery cover pressure relief |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088403U true CN204088403U (en) | 2015-01-07 |
Family
ID=52181079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420518011.4U Active CN204088403U (en) | 2014-08-29 | 2014-08-29 | A kind of lithium ion battery cover pressure relief |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204088403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611960A (en) * | 2021-07-27 | 2021-11-05 | 东莞力朗电池科技有限公司 | Stable and reliable cylindrical lithium ion battery |
-
2014
- 2014-08-29 CN CN201420518011.4U patent/CN204088403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611960A (en) * | 2021-07-27 | 2021-11-05 | 东莞力朗电池科技有限公司 | Stable and reliable cylindrical lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180428 Granted publication date: 20150107 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20150107 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210428 Granted publication date: 20150107 |