CN203150642U - Exhaust valve for lithium ion battery - Google Patents
Exhaust valve for lithium ion battery Download PDFInfo
- Publication number
- CN203150642U CN203150642U CN2012207109463U CN201220710946U CN203150642U CN 203150642 U CN203150642 U CN 203150642U CN 2012207109463 U CN2012207109463 U CN 2012207109463U CN 201220710946 U CN201220710946 U CN 201220710946U CN 203150642 U CN203150642 U CN 203150642U
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- connection block
- seal bar
- valve seat
- 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
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
An exhaust valve for a lithium ion battery comprises a valve seat which is connected with a shell of a lithium ion battery and is provided with an air discharge hole communicated with an inner chamber of the lithium ion battery, a sealed rod (3) which is disposed in the valve seat and is sealed on the air discharge hole of the valve seat, and a spring (4) which is disposed in the valve seat and acts on the sealed rod (3); under the action of the spring (4), only if the internal pressure of the lithium ion battery is larger than the external air pressure, the sealed rod (3) is opened, which prevents external air from entering the inside of the lithium ion battery, thus ensures the performance indexes of the lithium ion battery, and improves the safety performance of the lithium ion battery.
Description
Technical field
The utility model relates to a kind of vent valve, especially a kind of vent valve for lithium ion battery.
Background technology
Battery generally includes electrokinetic cell and energy-storage battery, lithium ion battery is widely used as a kind of rechargeable type battery, therefore lithium ion battery is a kind of important electric power equipment, therefore being used for lithium ion battery is an important machining equipment, in order to keep the inside lithium ion cell gas pressure less than external air pressure, prevent that lithium ion battery from blasting, the vent valve that is used for lithium ion battery is important safety parts, at existing vent valve for battery, one end of valve body is provided with an inboard and is hemispherical act of violence and the through hole perforation of being located at other end of valve body, the glass ball is housed in the through hole of the valve body other end successively, dolioform rubber gasket, relief frame, explosion-proof filter, one top cover is installed in the valve hole end and keeps non-tight to contact with through hole, the main use that is suitable for various non-maintaining sealed cells, also there is not a kind of vent valve that is suitable for lithium ion battery, prevent that extraneous gas from entering into inside lithium ion cell, produce double decomposition and oxidation reaction, can discharge inside lithium ion cell gas again.
Summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this utility model provides a kind of vent valve for lithium ion battery, has therefore guaranteed the performance index of lithium ion battery, has improved the security performance of lithium ion battery.
For achieving the above object, the technical scheme that the utility model is taked is: include with the housing of lithium ion battery connect and be provided with the logical air vent that is communicated with the inner chamber body of lithium ion battery valve seat, be arranged in the valve seat and be sealed in seal bar on the air vent of valve seat, be arranged in the valve seat and act on spring on the seal bar.
Connection Block is connected with the plastic cement shell of lithium ion battery or the housing of square aluminum hull, in the time of electric in-core portion's short circuit or a large amount of gas of polarization generation, elastic force by spring, seal bar can controlled folding, owing to designed seal bar and spring, under the effect of spring, when having only internal gas pressure when lithium ion battery greater than external air pressure, seal bar is just opened, prevented that extraneous air from entering into the inside of lithium ion battery, therefore guarantee the performance index of lithium ion battery, improved the security performance of lithium ion battery.
The utility model has designed, also include pressure sensor, valve seat is set to include Connection Block and fixed cap, Connection Block is arranged on the housing of lithium ion battery, fixed cap is set to connect with the Connection Block screw-type, the upper surface of Connection Block is provided with cone-shaped cavity, seal bar is provided with the cone portion corresponding with the cone-shaped cavity of Connection Block, the cone portion of seal bar is arranged in the cone-shaped cavity of Connection Block, the cone-shaped cavity of Connection Block is set to be communicated with the inner chamber body of lithium ion battery, between fixed cap and seal bar, be provided with spring, end face is provided with pressure sensor on the top of spring, the top end face of fixed cap is provided with air vent hole, and the air vent hole of fixed cap is set to be communicated with the inner chamber body of lithium ion battery.
The utility model has designed, and is respectively arranged with the vitreum cover layer at the contact-making surface of Connection Block and seal bar.
Description of drawings
Accompanying drawing is schematic diagram of the present utility model.
Embodiment
Accompanying drawing is first embodiment of the present utility model, specify present embodiment by reference to the accompanying drawings, include Connection Block 1, fixed cap 2, seal bar 3, spring 4 and pressure sensor 5, Connection Block 1 is arranged on the housing of lithium ion battery, fixed cap 2 is set to connect with Connection Block 1 screw-type, the upper surface of Connection Block 1 is provided with cone-shaped cavity, seal bar 3 is provided with the cone portion corresponding with the cone-shaped cavity of Connection Block 1, the cone portion of seal bar 3 is arranged in the cone-shaped cavity of Connection Block 1, the cone-shaped cavity of Connection Block 1 is set to be communicated with the inner chamber body of lithium ion battery, between fixed cap 2 and seal bar 3, be provided with spring 4, end face is provided with pressure sensor 5 on the top of spring 4, the top end face of fixed cap 2 is provided with air vent hole, and the air vent hole of fixed cap 2 is set to be communicated with the inner chamber body of lithium ion battery.
In the present embodiment, the contact-making surface in Connection Block 1 and seal bar 3 is respectively arranged with the vitreum cover layer.
Connection Block 1 is connected with the plastic cement shell of lithium ion battery or the housing of square aluminum hull, and in the time of electric in-core portion's short circuit or a large amount of gas of polarization generation, by pressure sensor 5 induction pressures, seal bar 3 can controlled folding.By the elastic force of spring 4, when electric in-core portion air pressure during greater than external pressure, then act on the seal bar 3 by internal gas, seal bar 3 and Connection Block 1 spreading, discharge internal gas.The pressure sensor 5 that connects, pass through transfer of data, can carry out battery pack is carried out detection of negative pressure, and can detect the internal pressure numerical value of electrokinetic cell, when cell internal pressure during less than outside atmospheric pressure, be considered as battery for safety, can design and pass through data processor within the specific limits, carry out the program of electrokinetic cell and report to the police, improved greatly electrokinetic cell or energy storage, other battery modules in using security performance.
Pressure sensor is that a kind of this kind design apparatus is responded to interacting between the ware by inside generation gas with the micro pressure that is connected, and acts on the bullet by internal pressure, and the spring assembly of connection can produce elastic deformation by the interaction of power.The fixedly block of this kind design apparatus adopts internal thread to carry out the spiral space that contacts airtight lithium battery cavity with valve body.The equally distributed aperture of design on the fixed cover of connection bullet, in the time of electric in-core portion's short circuit or a large amount of gas of polarization generation, by the pressure sensor induction pressure, bullet can controlled folding.Connect suitable compression spring device by the pressure sensitive ware, when electric in-core portion air pressure during greater than external pressure, then on bullet, can control folding by gas pressure.The pressure sensitive ware that connects, transfer of data is passed through in this design, can carry out the battery pack of pack is carried out detection of negative pressure, and can find the internal pressure situation of electrokinetic cell, pressure＜P atmospheric pressure in P, it is safe can be considered battery in principle, can design and pass through data processor within the specific limits, carry out the program of electrokinetic cell and report to the police, improved greatly electrokinetic cell or energy storage, other battery modules in using security performance.
The characteristics of the utlity model has down:
1, owing to designed seal bar 3 and spring 4, under the effect of spring 4, when having only internal gas pressure when lithium ion battery greater than external air pressure, seal bar 3 is just opened, prevented that extraneous air from entering into the inside of lithium ion battery, therefore guarantee the performance index of lithium ion battery, improved the security performance of lithium ion battery.
2, owing to designed Connection Block 1 and seal bar 3, seal by bullet, make the internal gas pressure active area of lithium ion battery little, improved the unlatching accuracy of seal bar 3.
3, owing to designed pressure sensor 5, can demarcate the internal gas pressure of lithium ion battery, for design and test provide parameter.
In being used for the vent valve technical field of lithium ion battery; Every include with the housing of lithium ion battery connect and be provided with the logical air vent that is communicated with the inner chamber body of lithium ion battery valve seat, be arranged in the valve seat and the technology contents that is sealed in seal bar 3 on the air vent of valve seat, is arranged in the valve seat and acts on the spring 4 on the seal bar 3 all in protection range of the present utility model.
Claims (3)
1. vent valve that is used for lithium ion battery; It is characterized in that: include with the housing of lithium ion battery connect and be provided with the logical air vent that is communicated with the inner chamber body of lithium ion battery valve seat, be arranged in the valve seat and be sealed in seal bar (3) on the air vent of valve seat, be arranged in the valve seat and act on spring (4) on the seal bar (3).
2. the vent valve for lithium ion battery according to claim 1; It is characterized in that: also include pressure sensor (5), valve seat is set to include Connection Block (1) and fixed cap (2), Connection Block (1) is arranged on the housing of lithium ion battery, fixed cap (2) is set to connect with Connection Block (1) screw-type, the upper surface of Connection Block (1) is provided with cone-shaped cavity, seal bar (3) is provided with the cone portion corresponding with the cone-shaped cavity of Connection Block (1), the cone portion of seal bar (3) is arranged in the cone-shaped cavity of Connection Block (1), the cone-shaped cavity of Connection Block (1) is set to be communicated with the inner chamber body of lithium ion battery, between fixed cap (2) and seal bar (3), be provided with spring (4), top end face at spring (4) is provided with pressure sensor (5), the top end face of fixed cap (2) is provided with air vent hole, and the air vent hole of fixed cap (2) is set to be communicated with the inner chamber body of lithium ion battery.
3. the vent valve for lithium ion battery according to claim 2; It is characterized in that: the contact-making surface in Connection Block (1) and seal bar (3) is respectively arranged with the vitreum cover layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207109463U CN203150642U (en) | 2012-12-21 | 2012-12-21 | Exhaust valve for lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207109463U CN203150642U (en) | 2012-12-21 | 2012-12-21 | Exhaust valve for lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150642U true CN203150642U (en) | 2013-08-21 |
Family
ID=48978143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207109463U Expired - Fee Related CN203150642U (en) | 2012-12-21 | 2012-12-21 | Exhaust valve for lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150642U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810494A (en) * | 2014-01-23 | 2015-07-29 | 罗伯特·博世有限公司 | Device and method for raising safety when battery system is used |
-
2012
- 2012-12-21 CN CN2012207109463U patent/CN203150642U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810494A (en) * | 2014-01-23 | 2015-07-29 | 罗伯特·博世有限公司 | Device and method for raising safety when battery system is used |
| CN104810494B (en) * | 2014-01-23 | 2019-06-25 | 罗伯特·博世有限公司 | For improving the device and method of safety when using battery system |
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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: 20130821 Termination date: 20131221 |