CN202585585U - Lithium ion battery and anti-seepage pressure-relief safety valve thereof - Google Patents
Lithium ion battery and anti-seepage pressure-relief safety valve thereof Download PDFInfo
- Publication number
- CN202585585U CN202585585U CN2012201878147U CN201220187814U CN202585585U CN 202585585 U CN202585585 U CN 202585585U CN 2012201878147 U CN2012201878147 U CN 2012201878147U CN 201220187814 U CN201220187814 U CN 201220187814U CN 202585585 U CN202585585 U CN 202585585U
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- Prior art keywords
- lithium ion
- ion battery
- exhaust passage
- ring
- cap
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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 ion battery and an anti-seepage pressure-relief safety valve installed on a shell body of the lithium ion battery. The safety valve comprises a valve body with a built-in exhaust passage, wherein an inlet of the exhaust passage located inside the shell body of the valve body is provided with a filtrate cap, a filtrate passage which is communicated with the inner cavity of the shell body and the exhaust passage is arranged inside the filtrate cap, and at least one bended section used to block and break bubbles is arranged between an inlet and an outlet of the filtrate passage. According to the lithium ion battery and the anti-seepage pressure-relief safety valve of the lithium ion battery, the inlet of the exhaust passage of the safety valve of the lithium ion battery is provided with the filtrate cap with the built-in filtrate passage, each bended section of the filtrate passage is used to enable the bubbles to turn around when the bubbles pass through the bended section, so that the bubbles are collided with the wall of the passage and then are broken, and the separation between gas and liquid is achieved. Therefore, electrolyte is effectively prevented from seeping from an exhaust nozzle, the surface of the battery keeps clean, and normal use of the lithium ion battery is guaranteed.
Description
Technical field
The utility model relates to a kind of lithium ion battery and safety valve thereof.
Background technology
Lithium ion battery is in use if open circuit, a large amount of heat accumulations occur at inside battery easily when overcharging; Blast thereby cause cell internal pressure to raise, so lithium ion battery all need be installed relief valve to discharge inner too high pressure in manufacture process.Chinese invention patent application CN101834313A discloses a kind of lithium ion battery that has gas release and anti-explosion popping safety valve; It is that heat-sealing at battery covers and is provided with an opening; Be provided with a safety valve in the opening; Establish the valve body of exhaust passage in this safety valve comprises, the trip through corresponding setting between valve outer wall and the heat-sealing lid connects and fixes, and is positioned at the exit, exhaust passage on the valve body and is installed with safety head; Be provided with the exhaust nozzle that extends towards the exit, exhaust passage in the exhaust passage; The exit seal of this exhaust nozzle is covered with pressure and regulates cap, on the valve interior wall between exhaust nozzle and the safety head, also is being provided with the pressure filter block, is provided with the air vent hole of perforation in the pressure filter block.When it raise when cell internal pressure gradually, air pressure can back down pressure adjusting cap through exhaust nozzle and outwards discharge, and it is when the instantaneous rising of cell internal pressure, and air pressure ejects safety valve integral body, to prevent battery explosion.But lithium ion battery is with in the process, and the pressure of inside battery discharges can produce bubble usually, and bubble breaks when regulating cap through pressure, and the electrolyte that splashes when bubble breaks is prone to flow out and the pollution battery surface from exhaust nozzle.
The utility model content
The purpose of the utility model is: a kind of lithium ion battery that can when pressure release, avoid electrolyte to spill is provided.
The technical scheme of the utility model lithium ion battery is: a kind of lithium ion battery; Comprise housing; The installing hole of offering through correspondence in the housing is sealed and installed with the safety valve that is used for pressure release; In comprising, safety valve is provided with the valve body of exhaust passage; The porch, exhaust passage that on said valve body, is positioned at housing also is provided with the filtrating cap, and filtrating is provided with the filtrate channel that is communicated with housing inner chamber and exhaust passage in the cap, in the import of said filtrate channel and be provided with at least one between exporting and be used to stop the section of turning back of destroying bubble.
The section of turning back of said filtrate channel is for convexing with the filtrate channel section of barrier sheet on the inwall.
In said valve body, be arranged in the exhaust passage and be provided with exhaust nozzle, the exit seal of exhaust nozzle is covered with pressure and regulates cap, is positioned at the exit, exhaust passage on the valve body and also is provided with safety head, between safety head and exhaust nozzle, also is provided with the filtrating sheet.
Described filtrating cap is provided with the exhaust passage is concentric, on the filtrating cap, evenly is laid with three filtrate channels around the center.
Radial loop is provided with the jump ring groove on the hole wall of said housing installing hole; Be installed with in the jump ring groove by ring body and spaced radial and be laid in hole that the Elastic Teeth of ring body inner ring forms with elasticity internal tooth back-up ring; On the outer peripheral face of valve body, radially convex with the boss of ring taper; The diameter of this ring cone boss enlarges along discharge directions gradually, and join with the ring body and the jump ring groove card of elasticity internal tooth back-up ring in said hole, and said hole cooperates with the corresponding block of big end end face of ring cone boss with the Elastic Teeth of elasticity internal tooth back-up ring.
The utility model also provides a kind of antiseepage pressure relief safety valve of lithium ion battery; The technical scheme of this antiseepage pressure relief safety valve is: a kind of antiseepage pressure relief safety valve of lithium ion battery; Be provided with the valve body of exhaust passage in comprising; On said valve body, be positioned at the porch, exhaust passage and also be provided with the filtrating cap, filtrating is provided with the filtrate channel that is communicated with housing inner chamber and exhaust passage in the cap, in the import of said filtrate channel and be provided with at least one between exporting and be used to stop the section of turning back of destroying bubble.
The section of turning back of said filtrate channel is for convexing with the filtrate channel section of barrier sheet on the inwall.
In said valve body, be arranged in the exhaust passage and be provided with exhaust nozzle, the exit seal of exhaust nozzle is covered with pressure and regulates cap, is positioned at the exit, exhaust passage on the valve body and also is provided with safety head, between safety head and exhaust nozzle, also is provided with the filtrating sheet.
Described filtrating cap is provided with the exhaust passage is concentric, on the filtrating cap, evenly is laid with three filtrate channels around the center.
On said valve body outer peripheral face, also convex with the ring cone boss that the Way out diameter strengthens gradually towards the exhaust passage, the big end end face of this ring cone boss be used for the battery container installing hole in the hole that clamps cooperate with the inner ring Elastic Teeth block of elasticity internal tooth back-up ring.
The utility model is a filtrating cap of in install the porch, exhaust passage of lithium ion battery safety valve, establishing filtrate channel; Utilize the section of turning back of filtrate channel make bubble through out-of-date force bubble to turn round and with conduit wall collision back fragmentation; Realize gas-liquid separation; Thereby effectively avoided electrolyte to ooze out exhaust nozzle, kept the battery surface cleaning, guaranteed the normal use of lithium ion battery.
Description of drawings
Fig. 1 is the structural representation of antiseepage pressure relief safety valve specific embodiment in the utility model lithium ion battery;
Fig. 2 is the structural representation of valve body among Fig. 1;
Fig. 3 is the stereogram of filtrating cap among Fig. 1;
Fig. 4 is the stereogram of filtrating cap on another direction among Fig. 1;
Fig. 5 is the structural representation of Fig. 1 mesopore with elasticity internal tooth back-up ring.
Embodiment
For example Fig. 1 is to shown in Figure 5 in the practical implementation of the lithium ion battery of the utility model, and it comprises housing 1, offers the installing hole of a perforation internal and external walls on the housing 1; Be sealed and installed with antiseepage pressure relief safety valve 2 in the installing hole; This antiseepage pressure relief safety valve 2 comprises valve body 3, is provided with in the valve body 3 to be communicated with the inside and outside exhaust passage 30 of housing 1, is provided with exhaust nozzle 4 in the exhaust passage 30; Be covered with pressure in the outlet of exhaust nozzle 4 and regulate cap 5; On the valve body 3 that is positioned at 30 exits, exhaust passage, also be provided with safety head 7, in the present embodiment, radially convex with the boss 9 of ring taper on the outer peripheral face of valve body 1; The diameter of this ring cone boss 9 strengthens along discharge directions gradually; On the inwall to the exhaust passage 30 that should encircle the big end of cone boss 9 ends, be provided with the jump ring groove, clamp porosely with elasticity internal tooth back-up ring 10 in the jump ring groove, this hole cooperates with the big end end face block that encircles cone boss 9 with the internal tooth of elasticity internal tooth back-up ring 10; Thereby safety valve 2 is installed in the installing hole of battery container 1, between valve body 2 and installing hole hole wall, is provided with sealing ring above with elasticity internal tooth back-up ring 10 in the hole.In the exhaust passage 30 be positioned at housing 1 the feeder connection place also be equipped with one heart filtrating cap 8; Center on the center on this filtrating cap 8 and evenly be laid with three filtrate channels 80 that are communicated with exhaust passage 30 in housing 1 inner chambers and the valve body; Be equipped with at least one section of turning back in each filtrate channel 80; In the present embodiment, it is that correspondence convexes with barrier sheet 81 on the inwall of each filtrate channel 80, filtrate channel 80 is formed at barrier sheet 81 places turn back.When its bubble that after the electrolyte Yin Wendu in the battery raises, produces passes through filtrating cap 8; Bubble is stopped by barrier sheet 81 and turns round through filtrate channel 80; Thereby the inwall collision of ordering about bubble and filtrate channel 80 is broken; The acid mist that gas and electrolyte volatilization form backs down pressure through filtrate channel 80 through exhaust nozzle 4 and regulates cap 5 discharges; Liquid electrolyte then flows back in the housing inner chamber along the inwall of filtrate channel 80, and it utilizes the filtrating cap to realize the gas-liquid separation of bubble, has effectively avoided electrolyte contamination battery container surface.For further avoiding solution leakage; In the present embodiment, establish the filtrating sheet 6 of aperture in also being fixed with on its conduit wall between safety head 7 and exhaust nozzle 4, adopt the characteristics of 6 ventilations of filtrating sheet, blocking solution; Acid mist is further separated with gas, avoid electrolyte to overflow.
The utility model also provides a kind of antiseepage pressure relief safety valve of lithium ion battery, and the concrete structure of this antiseepage pressure relief safety valve is existing in the above-described embodiments to be described downwards, repeats no more here.
The utility model is not limited to the foregoing description, and it is in having application, and the section of turning back in the filtrate channel also constitutes by segmental arc or V-arrangement section etc. are set in filtrate channel.
Claims (10)
1. lithium ion battery; Comprise housing, the installing hole of offering through correspondence in the housing is sealed and installed with the safety valve that is used for pressure release, is provided with the valve body of exhaust passage in safety valve comprises; It is characterized in that; The porch, exhaust passage that on said valve body, is positioned at housing also is provided with the filtrating cap, and filtrating is provided with the filtrate channel that is communicated with housing inner chamber and exhaust passage in the cap, in the import of said filtrate channel and be provided with at least one between exporting and be used to stop the section of turning back of destroying bubble.
2. lithium ion battery according to claim 1 is characterized in that, the section of turning back of said filtrate channel is for convexing with the filtrate channel section of barrier sheet on the inwall.
3. lithium ion battery according to claim 1; It is characterized in that; In said valve body, be arranged in the exhaust passage and be provided with exhaust nozzle; The exit seal of exhaust nozzle is covered with pressure and regulates cap, is positioned at the exit, exhaust passage on the valve body and also is provided with safety head, between safety head and exhaust nozzle, also is provided with the filtrating sheet.
4. lithium ion battery according to claim 1 is characterized in that, described filtrating cap is provided with the exhaust passage is concentric, on the filtrating cap, evenly is laid with three filtrate channels around the center.
5. according to any described lithium ion battery of claim 1 to 4; It is characterized in that; Radial loop is provided with the jump ring groove on the hole wall of said housing installing hole; Be installed with in the jump ring groove by ring body and spaced radial and be laid in hole that the Elastic Teeth of ring body inner ring forms with elasticity internal tooth back-up ring, on the outer peripheral face of valve body, radially convex with the boss of ring taper, the diameter of this ring cone boss enlarges along discharge directions gradually; Join with the ring body and the jump ring groove card of elasticity internal tooth back-up ring in said hole, and said hole cooperates with the corresponding block of big end end face of ring cone boss with the Elastic Teeth of elasticity internal tooth back-up ring.
6. the antiseepage pressure relief safety valve of a lithium ion battery; Be provided with the valve body of exhaust passage in comprising; It is characterized in that; On said valve body, be positioned at the porch, exhaust passage and also be provided with the filtrating cap, filtrating is provided with the filtrate channel that is communicated with housing inner chamber and exhaust passage in the cap, in the import of said filtrate channel and be provided with at least one between exporting and be used to stop the section of turning back of destroying bubble.
7. the antiseepage pressure relief safety valve of lithium ion battery according to claim 6 is characterized in that, the section of turning back of said filtrate channel is for convexing with the filtrate channel section of barrier sheet on the inwall.
8. the antiseepage pressure relief safety valve of lithium ion battery according to claim 6; It is characterized in that; In said valve body, be arranged in the exhaust passage and be provided with exhaust nozzle; The exit seal of exhaust nozzle is covered with pressure and regulates cap, is positioned at the exit, exhaust passage on the valve body and also is provided with safety head, between safety head and exhaust nozzle, also is provided with the filtrating sheet.
9. the antiseepage pressure relief safety valve of lithium ion battery according to claim 6 is characterized in that, described filtrating cap is provided with the exhaust passage is concentric, on the filtrating cap, evenly is laid with three filtrate channels around the center.
10. according to the antiseepage pressure relief safety valve of any described lithium ion battery of claim 6 to 8; It is characterized in that; On said valve body outer peripheral face, also convex with the ring cone boss that the Way out diameter strengthens gradually towards the exhaust passage, the big end end face of this ring cone boss be used for the battery container installing hole in the hole that clamps cooperate with the inner ring Elastic Teeth block of elasticity internal tooth back-up ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201878147U CN202585585U (en) | 2012-04-28 | 2012-04-28 | Lithium ion battery and anti-seepage pressure-relief safety valve thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201878147U CN202585585U (en) | 2012-04-28 | 2012-04-28 | Lithium ion battery and anti-seepage pressure-relief safety valve thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585585U true CN202585585U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201878147U Expired - Lifetime CN202585585U (en) | 2012-04-28 | 2012-04-28 | Lithium ion battery and anti-seepage pressure-relief safety valve thereof |
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| Country | Link |
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| CN (1) | CN202585585U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094512A (en) * | 2013-01-17 | 2013-05-08 | 苏州凯虹高分子科技有限公司 | Safety valve of lithium battery |
| EP3525263A1 (en) * | 2018-02-08 | 2019-08-14 | Contemporary Amperex Technology Co., Limited | One-way valve, top cover component, box and battery module |
| CN113540685A (en) * | 2021-06-07 | 2021-10-22 | 天能电池集团股份有限公司 | Waterproof storage battery |
| CN113859495A (en) * | 2021-09-30 | 2021-12-31 | 中国船舶重工集团公司第七0四研究所 | Controllable pitch propeller hub suitable for high navigational speed |
-
2012
- 2012-04-28 CN CN2012201878147U patent/CN202585585U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094512A (en) * | 2013-01-17 | 2013-05-08 | 苏州凯虹高分子科技有限公司 | Safety valve of lithium battery |
| EP3525263A1 (en) * | 2018-02-08 | 2019-08-14 | Contemporary Amperex Technology Co., Limited | One-way valve, top cover component, box and battery module |
| CN110137410A (en) * | 2018-02-08 | 2019-08-16 | 宁德时代新能源科技股份有限公司 | Check valve, top cap subassembly, box and battery module |
| US10833304B2 (en) | 2018-02-08 | 2020-11-10 | Contemporary Amperex Technology Co., Limited | One-way valve, top cover component, box and battery module |
| CN110137410B (en) * | 2018-02-08 | 2021-09-14 | 宁德时代新能源科技股份有限公司 | Check valve, top cap subassembly, box and battery module |
| CN113540685A (en) * | 2021-06-07 | 2021-10-22 | 天能电池集团股份有限公司 | Waterproof storage battery |
| CN113540685B (en) * | 2021-06-07 | 2023-10-03 | 天能电池集团股份有限公司 | Waterproof storage battery |
| CN113859495A (en) * | 2021-09-30 | 2021-12-31 | 中国船舶重工集团公司第七0四研究所 | Controllable pitch propeller hub suitable for high navigational speed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |