CN201975473U - Lithium battery and lithium battery safety valve - Google Patents
Lithium battery and lithium battery safety valve Download PDFInfo
- Publication number
- CN201975473U CN201975473U CN201120062892XU CN201120062892U CN201975473U CN 201975473 U CN201975473 U CN 201975473U CN 201120062892X U CN201120062892X U CN 201120062892XU CN 201120062892 U CN201120062892 U CN 201120062892U CN 201975473 U CN201975473 U CN 201975473U
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- China
- Prior art keywords
- spool
- magnetic
- valve
- magnet
- vent hole
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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 discloses a lithium battery and a lithium battery safety valve. The lithium battery comprises a shell. The shell is provided with a vent hole. The position of the vent hole is provided with the safety valve. The safety valve comprises a valve cover plate, a valve seat and a valve core, wherein the valve cover plate is fixed at the upper end of the vent hole and is provided with an air vent; the valve seat is fixed at the lower end of the vent hole; the valve core is matched with the valve seat in a sealing mode; a spring is butted against between the valve cover plate and the valve core; the valve seat is a magnetic base; the magnetic base comprises a base air vent communicated with the vent hole; the valve core and the base air vent are arranged in a sealing mode; a magnet is fixed on the lower end face of the valve cover plate; a cover plate air vent perforates through the magnet; the valve core is a magnetic magnetic core; and the magnetic property of the upper end of the valve core is repellent to the magnetic property of the lower end of the magnet, and/or the magnetic property of the lower end of the valve core is attractive to the magnetic property of the upper end of the magnetic base. The valve core is controlled by a magnetic force to realize on-off of the vent hole so as to prevent external gas from entering the inside of the lithium battery, prevent internal redundant gas from being exhausted successfully and ensure stability of the safety valve in the long-term using process.
Description
Technical field
The utility model relates to a kind of lithium ion battery annex, is specifically related to be installed in the safety valve of lithium-ion battery shell oral area.
Background technology
Lithium-ion-power cell use and transportation in short circuit occurs, overcharge, cross when situation such as putting, can cause electric current out of control, thereby make the battery temperature rising.When temperature was elevated to certain altitude, the material of inside battery such as electrolyte etc. can decompose, produce gas.Along with the pressure rising of gas, can make battery container expand, be out of shape.When serious, also can make the battery container explosion.Therefore, no matter be the lithium ion battery of plastic housing, aluminum hull, stainless steel casing, its oral area all is equipped with safety valve, to be used to avoid the generation of the problems referred to above.
Application number is that 200820149256.9 Chinese patent discloses a kind of lithium battery that has safety valve, comprise battery container, the battery top is provided with a relief valve device, this relief valve device comprises three sections concentric stepped holes on the housing top board, the epimere of three sections concentric stepped holes is a screwed hole, interlude and hypomere are circular hole, and the aperture of three sections stepped holes diminishes from top to bottom successively; Be installed with the gas permeability valve cover on the screwed hole, be provided with sealing plate, be top-loaded with the compression spring between valve cover and the sealing plate at the mouth of getting out of a predicament or an embarrassing situation.The gas that this lithium battery interior the produces crush seal plate that makes progress at hypomere circular hole place, sealing plate is extruding compression spring upwards, and gas is discharged from the air-vent of gas permeability valve cover, thereby gas is in time discharged from inside battery, has effectively adjusted the inside and outside pressure of battery.But because lithium battery generation of gas in course of reaction is bigger, lithium battery needs safety dumping to go out gas, but also want the discharging of accurate control gaseous and stablizing of safety valve thereof, the compression spring is after long-time the use, its elastic deformation instability, therefore, only rely on the compression spring to realize that gaseous emission can not reach accurate control and the stable requirement of safety valve.
The utility model content
The purpose of this utility model provides a kind ofly can accurately control exhaust, guarantees the stable lithium battery of safety valve, and the safety valve of lithium battery is provided simultaneously.
The utility model lithium battery adopts following technical scheme: a kind of lithium battery, comprise housing, offer steam vent on the housing, described steam vent place is provided with safety valve, this safety valve comprises the valve cover that has air vent hole that is fixed on the steam vent upper end, be fixed on the valve seat of steam vent lower end and the spool that cooperates with described valve base sealing, be top-loaded with spring between described valve cover and the spool, described valve seat is a magnetic base, magnetic base comprises the pedestal air vent hole that communicates with steam vent, described spool and the sealing of pedestal air vent hole are provided with, the lower surface of described valve cover is fixed with magnet, described cover plate air vent hole runs through magnet, described spool is the magnetic spool, and the magnetic of spool upper end repels each other with the magnetic of magnet lower end, and/or the magnetic of spool lower end is inhaled mutually with the magnetic on the magnetic base.
Described steam vent comprises the screwed hole of epimere and the bellmouth of hypomere, and the small end of bellmouth is positioned at the lower end, and described valve cover is fixed by screw thread and housing, and the conical surface of described magnetic base and bellmouth fixedly installs.
Described spool is sphere or ellipticity, is positioned at pedestal air vent hole upper end on the magnetic base and offers the arc step surface that cooperates with described seal spool.
The lower end of described magnet, the upper end of spool are equipped with the projection of joining with described Spring Card.
The lower surface of described valve cover offers the groove that coincide and cooperate with magnet.
The utility model lithium cell safety valve adopts following technical scheme: a kind of lithium cell safety valve, comprise the valve cover that has air vent hole that is used for fixing on the steam vent on the adaptive lithium battery housing, be used for fixing at the valve seat of steam vent lower end and the spool that cooperates with described valve base sealing, be top-loaded with spring between described valve cover and the spool, described valve seat is a magnetic base, magnetic base comprises the pedestal air vent hole that communicates with steam vent, described spool and the sealing of pedestal air vent hole are provided with, the lower surface of described valve cover is fixed with magnet, described cover plate air vent hole runs through magnet, described spool is the magnetic spool, and the magnetic of spool upper end and the magnetic of magnet lower end are repelled each other, and/or the magnetic of spool lower end is inhaled mutually with the magnetic of magnetic base upper end.
Described spool is sphere or ellipticity, and the upper end that is positioned at the pedestal air vent hole on the magnetic base offers the arc step surface that cooperates with described seal spool.
The upper end of the lower end of described magnet, magnetic spool is equipped with the projection of joining with described Spring Card.
The lower surface of described valve cover offers the groove that coincide and cooperate with magnet.
Adopt the lithium battery and the lithium cell safety valve of said structure, described spool is the magnetic spool, the valve cover lower surface is fixed with magnet, the lower end of bellmouth is fixed with the magnetic base that cooperates with bellmouth, magnetic base is provided with the pedestal air vent hole that connects with steam vent, and the magnetic of magnet lower end is identical with the magnetic of spool upper end, and the magnetic of spool lower end is identical with the magnetic of magnetic base upper end.Therefore, the repulsion mutually of magnet and spool, spool and magnetic base attract each other, and the acting in conjunction by repulsive force and attraction is with the pedestal air vent hole sealing at magnetic base place.When the gas pressure in the lithium battery housing during greater than acting in conjunction power, gas promotes to move on the spool, length of spring compressed, and pedestal air vent hole and cover plate air vent hole communicate, and gas is discharged, and spring plays effect spacing and buffering.Control the break-make that spool is realized steam vent by magnetive attraction, prevented that extraneous gas from entering lithium battery interior and inner unnecessary gas is discharged smoothly, and guaranteed safety valve stablizing in long-time use.
Description of drawings
Fig. 1 is the utility model lithium cell safety valve scheme of installation;
Fig. 2 is the valve core structure schematic diagram of the utility model lithium cell safety valve.
Embodiment
As shown in Figure 1 and Figure 2, the embodiment of the utility model lithium battery: comprise housing 1, offer steam vent 10 on the housing 1, steam vent 10 comprises the screwed hole of epimere and the bellmouth of hypomere, and the small end of bellmouth is positioned at the lower end.In the described steam vent 10 safety valve is installed, this safety valve comprises valve cover 2, valve seat of fixing by screw thread and housing 1 that is fixed on the bellmouth lower end and the spool 6 that is provided with valve base sealing, described steam vent 10 constitutes the valve pocket of this safety valve, is top-loaded with spring 5 between valve cover 2 and the spool 6.The lower surface of valve cover 2 offers groove, is furnished with magnet 4 in the groove, and described magnet 4 is adhesively fixed in the groove, offer a plurality of cover plate air vent holes 3 on the valve cover 2, and cover plate air vent hole 3 runs through magnet 4; Described spool 6 is spherical or elliptoid magnetic spool, and the equal correspondence in lower end of the upper end of spool 6, magnet 4 is provided with the projection of joining with described spring 5 cards.Described magnetic base 7 comprises the pedestal air vent hole 8 that connects steam vent 10, and the upper end that is positioned at pedestal air vent hole 10 on the magnetic base 7 offers the arcuation step surface 9 that is sealed and matched with described spool 6.The magnetic of described magnet 4 lower ends and the magnetic of spool 6 upper ends are repelled each other, and the magnetic of spool 6 lower ends is inhaled mutually with the magnetic of magnetic base 7 upper ends.
The foregoing description employing magnet 4 and the acting in conjunction power that the magnetic of spool 6 is repelled each other and the magnetic of spool 6 and magnetic base 7 is inhaled mutually, spool 6 and magnetic base 7 are sealed and matched, when magnetive attraction is enough big, also can only adopt repel each other active force or only adopt the magnetic interattraction power of spool 6 and magnetic base 7 of the magnet 4 and the magnetic of spool 6.
When in running order, when the gas pressure in the lithium battery housing 1 further raises, gas promotes to move on the spool 6 at pedestal air vent hole 8 places, whole steam vent 10 is opened, because the attraction acting in conjunction of the repulsive force of magnet 4 and spool 6 and magnetic base 7 and spool 6, gas can slow release comes out, and can avoid the moment gaseous emission to cause electrolyte to leak.Simultaneously, move past journey medi-spring compression 5 on the spool 6, spring 5 has played effect spacing and buffering.
The embodiment of the utility model lithium cell safety valve is consistent with the content of the safety valve of above-mentioned lithium battery, so no longer describe at this.
Claims (9)
1. lithium battery, comprise housing, offer steam vent on the housing, described steam vent place is provided with safety valve, this safety valve comprises the valve cover that has air vent hole that is fixed on the steam vent upper end, be fixed on the valve seat of steam vent lower end and the spool that cooperates with described valve base sealing, be top-loaded with spring between described valve cover and the spool, it is characterized in that: described valve seat is a magnetic base, magnetic base comprises the pedestal air vent hole that communicates with steam vent, described spool and the sealing of pedestal air vent hole are provided with, the lower surface of described valve cover is fixed with magnet, described cover plate air vent hole runs through magnet, described spool is the magnetic spool, and the magnetic of spool upper end repels each other with the magnetic of magnet lower end, and/or the magnetic of spool lower end is inhaled mutually with the magnetic on the magnetic base.
2. lithium battery according to claim 1, it is characterized in that: described steam vent comprises the screwed hole of epimere and the bellmouth of hypomere, and the small end of bellmouth is positioned at the lower end, and described valve cover is fixed by screw thread and housing, and the conical surface of described magnetic base and bellmouth fixedly installs.
3. lithium battery according to claim 1 and 2 is characterized in that: described spool is sphere or ellipticity, is positioned at pedestal air vent hole upper end on the magnetic base and offers the arc step surface that cooperates with described seal spool.
4. lithium battery according to claim 1 is characterized in that: the lower end of described magnet, the upper end of spool are equipped with the projection of joining with described Spring Card.
5. according to any described lithium battery of claim 1-4, it is characterized in that: the lower surface of described valve cover offers the groove that coincide and cooperate with magnet.
6. lithium cell safety valve, comprise the valve cover that has air vent hole that is used for fixing on the steam vent on the adaptive lithium battery housing, be used for fixing at the valve seat of steam vent lower end and the spool that cooperates with described valve base sealing, be top-loaded with spring between described valve cover and the spool, it is characterized in that: described valve seat is a magnetic base, magnetic base comprises the pedestal air vent hole that communicates with steam vent, described spool and the sealing of pedestal air vent hole are provided with, the lower surface of described valve cover is fixed with magnet, described cover plate air vent hole runs through magnet, described spool is the magnetic spool, and the magnetic of spool upper end and the magnetic of magnet lower end are repelled each other, and/or the magnetic of spool lower end is inhaled mutually with the magnetic of magnetic base upper end.
7. lithium cell safety valve according to claim 6 is characterized in that: described spool is sphere or ellipticity, and the upper end that is positioned at the pedestal air vent hole on the magnetic base offers the arc step surface that cooperates with described seal spool.
8. lithium cell safety valve according to claim 6 is characterized in that: the lower end of described magnet, the upper end of spool are equipped with the projection of joining with described Spring Card.
9. lithium cell safety valve according to claim 6 is characterized in that: the lower surface of described valve cover offers the groove that coincide and cooperate with magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120062892XU CN201975473U (en) | 2011-03-11 | 2011-03-11 | Lithium battery and lithium battery safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120062892XU CN201975473U (en) | 2011-03-11 | 2011-03-11 | Lithium battery and lithium battery safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975473U true CN201975473U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120062892XU Expired - Fee Related CN201975473U (en) | 2011-03-11 | 2011-03-11 | Lithium battery and lithium battery safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975473U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103371B2 (en) | 2015-12-25 | 2018-10-16 | Industrial Technology Research Institute | Actuating structure of battery safety valve |
| CN110039001A (en) * | 2019-05-30 | 2019-07-23 | 广西玉柴机器股份有限公司 | A kind of method and structure casting the anti-air inlet of upper core box gas vent |
| CN112022273A (en) * | 2020-09-18 | 2020-12-04 | 中国人民解放军陆军军医大学第一附属医院 | Novel atmospheric pressure tourniquet suitable for operation of four limbs near-end |
-
2011
- 2011-03-11 CN CN201120062892XU patent/CN201975473U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10103371B2 (en) | 2015-12-25 | 2018-10-16 | Industrial Technology Research Institute | Actuating structure of battery safety valve |
| CN110039001A (en) * | 2019-05-30 | 2019-07-23 | 广西玉柴机器股份有限公司 | A kind of method and structure casting the anti-air inlet of upper core box gas vent |
| CN112022273A (en) * | 2020-09-18 | 2020-12-04 | 中国人民解放军陆军军医大学第一附属医院 | Novel atmospheric pressure tourniquet suitable for operation of four limbs near-end |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 471003 Henan high tech Zone in Luoyang City, Spring City Road No. 16 Patentee after: China Aviation Lithium Battery Co., Ltd. Address before: 471003, Binhe Road, hi tech Zone, Henan, Luoyang, 36 Patentee before: China Aviation Lithium Battery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20180311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |