CN203481305U - Battery safety valve device and battery thereof - Google Patents
Battery safety valve device and battery thereof Download PDFInfo
- Publication number
- CN203481305U CN203481305U CN201320638541.8U CN201320638541U CN203481305U CN 203481305 U CN203481305 U CN 203481305U CN 201320638541 U CN201320638541 U CN 201320638541U CN 203481305 U CN203481305 U CN 203481305U
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- Prior art keywords
- safety valve
- valve body
- battery
- exhaust outlet
- cavity
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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 relates to a battery safety valve device and a battery thereof. The battery safety valve device comprises an installation cavity and safety valve bodies arranged in the installation cavity and arranged in a multistage stacked mode. The safety valve bodies are respectively provided with a gas inlet and an exhaust port, the gas inlet of the first-stage safety valve body located on the bottom of the installation cavity is used for receiving gas in a battery case cavity, the exhaust port of the last-stage safety valve body located on the top of the installation cavity is provided with a protective cover plate which is provided with multiple gas vents, the exhaust ports of the safety valve bodies are provided with sealing rubber sleeves used for sealing the exhaust ports, a seal ring is arranged between every two adjacent safety valve bodies, the sealing rubber sleeves can be opened under certain air pressure, and the safety valve bodies are communicated with the gas inlets through the exhaust ports after the sealing rubber sleeves are opened. The battery safety valve device can effectively eliminate gas generated due to electrochemical reaction in a power battery and prolong the service life of the battery.
Description
Technical field
The utility model relates to battery and Sealing Technology thereof, is specifically related to power battery safety valve device and battery thereof.
Background technology
The fail safe of electrokinetic cell is the emphasis of paying close attention in industry always, and common way is in the industry to install tinsel additional on a large air vent hole, when air pressure inside increases, breaks through paillon foil and pressure release reaches safe object.After this, battery had just lost efficacy, and had shortened the useful life of battery.Yet the battery of this kind of safety valve structure has produced gas in battery, no matter be chronic generation, acute generation, after safety valve explosion, although solved safety problem in early stage, but produced again new safety problem thereupon.As safety valve explosion, will draw moisture content a large amount of in air, continuous and cause internal short-circuit, emit a large amount of heat, even also there will be naked light burning.
Can do test: with a king-sized soft-package battery of air-blowing (having electricity), after puncturing, emit gas, after tens minutes, battery just starts heating, then rise to the state that occurs that naked light burns.So after battery air-blowing, safety valve explosion, just think and solved safety problem, be to understand incomplete way.Therefore, after the battery safety valve explosion of prior art, can draw moisture in air, thereby causing that interior electrochemistry reacts produces the possibility of secondary disaster.The useful life of also having reduced battery simultaneously.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of and can effectively solve electrokinetic cell internal cause the electrochemical reaction gas producing and the cell safety valve gear that improves battery life;
Meanwhile, the utility model also provides a kind of battery that utilizes described cell safety valve gear.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of cell safety valve gear, it comprises installs cavity and is located at the safety valve body that the multistage stacked arrangement in cavity is installed, install on valve body and be respectively equipped with air inlet and exhaust outlet, be positioned at the air inlet of the first order installation valve body that cavity bottom is installed for receiving the gas in battery case chamber, the exhaust outlet that is positioned at the afterbody installation valve body that cavity top is installed is provided with protective cover plate, protective cover plate is provided with a plurality of steam vents, on the exhaust outlet of installation valve bodies at different levels, be equipped with for sealing the seal rubber sleeve of exhaust outlet, between adjacent installation valve body, be provided with sealing ring, seal rubber sleeve can be opened under certain air pressure, after seal rubber sleeve is opened, installation valve bodies at different levels are connected state by exhaust outlet and air inlet.
In this programme, by a plurality of safety valve bodies are set, make the gas can only be by discharging outside Nei Xiangke chamber, battery case chamber, extraneous gas and moisture can not penetrate in battery case chamber, adopt the structure of a plurality of safety valve bodies, can more effectively prevent the infiltration of moisture content.
Further, described installation valve body is double-sleeve structure, and inner sleeve is hollow cavity, and described air inlet is positioned at the bottom of hollow cavity, and inner sleeve sidewall is provided with described exhaust outlet, and outer sleeve sidewall is provided with the through hole corresponding with exhaust outlet.
Further, the outer sleeve end face of described safety valve body is provided with several installing holes, for being assembled to, installs in cavity, in this programme, by specific purpose tool, safety valve body can be encased in battery case chamber smoothly.
Further, described sealing shroud and sealing ring are that fluorubber material makes, and have the effect of acid-fast alkali-proof, anti-aging, and have certain elasticity, mainly seal.
The exhaust pressure of described safety valve body is 0.20～0.3MPa, i.e. when internal gas pressure increases to 0.20～0.3MPa (2 ~ 3KG) starts exhaust.Safety valve pressure than 0.4 common ~ 1.0MPa is low.Low pressure, with regard to the advantage of exhaust, is that pressure risk is dropped to minimum point.When if gas pressure is too high, battery is distortion just, easier detonator circuit fault, and internal pressure is large, and battery explosion just has larger destructiveness.Therefore the safety valve body fail safe of this programme is more reliable.
Simultaneously, the utility model provides a kind of cell safety valve gear, it comprises installs cavity and is located at the first order safety valve body from Inlet Position toward the position stacked arrangement of giving vent to anger of installing in cavity, second level safety valve body, install on valve body and be respectively equipped with air inlet and exhaust outlet, the first order is installed the air inlet of valve body for receiving the gas in battery case chamber, the exhaust outlet that valve body is installed in the second level is provided with protective cover plate, protective cover plate is provided with a plurality of steam vents, first, on the exhaust outlet of second level installation valve body, be equipped with for sealing the seal rubber sleeve of exhaust outlet, first, the second level is installed between valve body and is provided with sealing ring, seal rubber sleeve can be opened under certain air pressure, after seal rubber sleeve is opened, two-stage is installed valve body and is connected state by exhaust outlet and air inlet.
In this programme, by two safety valve bodies are set, make the gas can only be by discharging outside Nei Xiangke chamber, battery case chamber, extraneous gas and moisture can not penetrate in battery case chamber, adopt the structure of two safety valve bodies, can more effectively prevent the infiltration of moisture content.
In addition, the utility model also provides a kind of battery, and it comprises battery case chamber, be located on battery case chamber safety valve installing hole and be located at the above-mentioned cell safety valve gear in safety valve installing hole.
In the utility model, before fluid injection, leave large safety valve installing hole, be conducive to baking process, faster than aperture fluid injection, do not need to have had liquid injection hole in addition simultaneously yet, save the equipment and technology of liquid injection hole and plug-hole.While changing into, the gas producing because of inside swells battery case chamber.Therefore also can save fixture and cost of equipment in formation process.In battery formation process, the gas producing in cell body, surpasses environment inside and outside differential pressure, can automatically by one-way relief valves, gas be ejected.Also can be by changing into before battery dispatches from the factory, the gas after partial volume is again by vacuumizing form, and the gas in cell body is ejected, and forms the standard of dispatching from the factory, and can extend battery in use because of the gas life-saving that rises less.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of cell safety valve gear;
Fig. 2 is the structural representation of protective cover plate;
Fig. 3 is the structural representation of safety valve body.
Embodiment
Below in conjunction with specific embodiment, the utility model is further described.
As shown in Figure 1 to Figure 3, the utility model discloses a kind of cell safety valve gear, it comprises installs cavity 2 and is located at the safety valve body 3 that the multistage stacked arrangement in cavity 2 is installed, install on valve body 3 and be respectively equipped with air inlet 31 and exhaust outlet 32, be positioned at the air inlet of the first order installation valve body 3 that cavity 2 bottoms are installed for receiving the gas in battery case chamber, the exhaust outlet that is positioned at the afterbody installation valve body 3 that cavity 2 tops are installed is provided with protective cover plate 5, protective cover plate 5 is provided with a plurality of steam vents 51, on the exhaust outlet of installation valve bodies 3 at different levels, be equipped with for sealing the seal rubber sleeve 4 of exhaust outlet, between adjacent installation valve body, be provided with sealing ring 1, seal rubber sleeve 4 is opened under certain air pressure, after seal rubber sleeve 4 is opened, installation valve bodies 3 at different levels are connected state by exhaust outlet and air inlet.
The utility model discloses a kind ofly according to the battery of described cell safety valve gear, it comprises battery case chamber, be located on battery case chamber safety valve installing hole and be located at the described cell safety valve gear in safety valve installing hole.
In battery case chamber, 2 produce after gases, and gas pressure constantly increases, and by air inlet, the exhaust outlet of first order safety valve body 3, the sidewall extruding to the seal rubber sleeve 4 of the first order, is discharged in the inner chamber of sealing ring 1.Along with gas is constantly to the entering of the inner chamber of sealing ring 1, gas is the air inlet of the second level safety valve body 3 by top again, to the sidewall extruding of the seal rubber sleeve 4 of the second level.Finally by three steam vents of protective cover plate 5, discharge.
From upper graph structure, gas can only be discharged by (below) in battery case chamber outside shell chamber (top).For battery industry, the strict control requirement to moisture content, adopts the method for a plurality of safety valve bodies, more effectively prevents the infiltration of moisture content.
Before finished product shipment, whole battery can be placed in to vacuum tank, adopt and vacuumize mode, due to inside and outside differential pressure, the gas in battery case can be inhaled/ejected.After this, in battery case chamber, be vacuum state with annular seal space, moisture content will just can enter in battery case chamber by upper and lower two safety valve bodies and a vacuum chamber, can effectively prevent entering of moisture.Also can after use the long period, adopting and vacuumize way, carry out battery maintenance, is the effective means that reduces inner pressure of battery.In battery, there is no gas pressure, be vacuum state, battery just can not be out of shape because of flatulence, has just improved coefficient of safety yet, and has extended useful life simultaneously.
By great many of experiments, test, the exhaust pressure of this safety valve body is 0.20～0.3MPa,, when internal gas pressure increases to 0.20～0.3MPa, starts exhaust.Safety valve pressure than 0.4 common～1.0MPa is much lower.Low pressure, with regard to the advantage of exhaust, is that pressure risk is dropped to minimum point.When if gas pressure is too high, battery is distortion just, easier detonator circuit fault, and internal pressure is large, and battery explosion just has larger destructiveness.So the security reliability of this safety valve body is better.
Described installation valve body 3 is double-sleeve structure, and inner sleeve is hollow cavity, and described air inlet 31 is positioned at the bottom of hollow cavity, and inner sleeve sidewall is provided with described exhaust outlet 32, and outer sleeve sidewall is provided with the through hole corresponding with exhaust outlet 32 33.The outer sleeve end face of described safety valve body 3 is provided with several installing holes 34, for being assembled to, installs in cavity.Described seal rubber sleeve 4 and sealing ring 1 make for fluorubber material.
In addition, the manufacture method of battery described in the utility model, it comprises the following steps:
A. in battery, after assembling, before cell safety valve gear is installed, first toast, after baking, by safety valve installing hole, carry out fluid injection; Now this cell safety valve gear is not also installed, and leaves large position, hole, is conducive to baking process.When battery liquid-filling, can pass through safety valve installing hole, carry out quick fluid injection, faster, good than aperture fluid injection, just do not need to have had liquid injection hole in addition simultaneously yet, saved the equipment and technology of liquid injection hole and plug-hole.
B. fluid injection complete after, cell safety valve gear is mounted in safety valve installing hole, and changes into;
While c. changing into, by cell safety valve gear, vacuumize, the gas in battery case chamber is extracted out by cell safety valve gear.While changing into, can on cell safety valve gear, fill a snap joint, connect a pipe, and it is vacuumized, the gas in battery case chamber is released by cell safety valve gear.
In battery formation process, the gas producing in cell body, surpasses environment inside and outside differential pressure, can automatically by one-way relief valves, gas be ejected.Also can be by changing into before battery dispatches from the factory, the gas after partial volume is again by vacuumizing form, and the gas in cell body is ejected, and forms the standard of dispatching from the factory, and can extend battery in use because of the gas life-saving that rises less.
When user in use generates heat or reaches specification after the life-span, in battery case, there is certain gas, surpass the certain air pressure of environment, by secondary one-way relief valves, automatically discharge at any time the function that reaches safe and effective protection and increase the service life.
This cell safety valve gear has very strong single effect, and gas is discharged only from inside to outside, and extraneous gas, liquid etc. can not enter in shell by this valve in reverse osmosis.Meanwhile, when inside occurs surprisingly, gas sharply property increases, and form explosion time, also can wash whole cell safety valve gear passage open, forms larger exhaust outlet, discharges intracavity gas.Cell safety valve gear reversible (annexing the function of common safety valve) no longer just now, after breaking through, the cell safety valve gear that can only more renew.
The present embodiment is specifically defined as the safety valve body of two-stage, be specially, comprise and cavity 2 is installed and is located at the first order safety valve body from Inlet Position toward the position stacked arrangement of giving vent to anger of installing in cavity 2, second level safety valve body, install on valve body 3 and be respectively equipped with air inlet 31 and exhaust outlet 32, the first order is installed the air inlet of valve body for receiving the gas in battery case chamber, the exhaust outlet that valve body is installed in the second level is provided with protective cover plate 5, protective cover plate 5 is provided with a plurality of steam vents 51, first, on the exhaust outlet of second level installation valve body, be equipped with for sealing the seal rubber sleeve 4 of exhaust outlet, first, the second level is installed between valve body and is provided with sealing ring 1, seal rubber sleeve 4 can be opened under certain air pressure, after seal rubber sleeve 4 is opened, two-stage is installed valve body 3 and is connected state by exhaust outlet 32 and air inlet 31.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection range of the utility model claim.
Claims (7)
1. a cell safety valve gear, it is characterized in that, comprise and cavity is installed and is located at the safety valve body that the multistage stacked arrangement in cavity is installed, install on valve body and be respectively equipped with air inlet and exhaust outlet, be positioned at the air inlet of the first order installation valve body that cavity bottom is installed for receiving the gas in battery case chamber, the exhaust outlet that is positioned at the afterbody installation valve body that cavity top is installed is provided with protective cover plate, protective cover plate is provided with a plurality of steam vents, on the exhaust outlet of installation valve bodies at different levels, be equipped with for sealing the seal rubber sleeve of exhaust outlet, between adjacent installation valve body, be provided with sealing ring, seal rubber sleeve can be opened under certain air pressure, after seal rubber sleeve is opened, installation valve bodies at different levels are connected state by exhaust outlet and air inlet.
2. cell safety valve gear according to claim 1, it is characterized in that, described installation valve body is double-sleeve structure, inner sleeve is hollow cavity, described air inlet is positioned at the bottom of hollow cavity, inner sleeve sidewall is provided with described exhaust outlet, and outer sleeve sidewall is provided with the through hole corresponding with exhaust outlet.
3. cell safety valve gear according to claim 2, is characterized in that, the outer sleeve end face of described safety valve body is provided with several installing holes, for being assembled to, installs in cavity.
4. cell safety valve gear according to claim 1, is characterized in that, described sealing shroud and sealing ring are that fluorubber material makes.
5. cell safety valve gear according to claim 1, is characterized in that, the unlatching exhaust pressure of described seal rubber sleeve is 0.20 ~ 0.3MPa.
6. a cell safety valve gear, it is characterized in that, comprise and cavity is installed and is located at the first order safety valve body from Inlet Position toward the position stacked arrangement of giving vent to anger of installing in cavity, second level safety valve body, install on valve body and be respectively equipped with air inlet and exhaust outlet, the first order is installed the air inlet of valve body for receiving the gas in battery case chamber, the exhaust outlet that valve body is installed in the second level is provided with protective cover plate, protective cover plate is provided with a plurality of steam vents, first, on the exhaust outlet of second level installation valve body, be equipped with for sealing the seal rubber sleeve of exhaust outlet, first, the second level is installed between valve body and is provided with sealing ring, seal rubber sleeve can be opened under certain air pressure, after seal rubber sleeve is opened, two-stage is installed valve body and is connected state by exhaust outlet and air inlet.
7. according to a battery for cell safety valve gear described in claim 1 to 6 any one, it comprises battery case chamber, be located on battery case chamber safety valve installing hole and be located at the described cell safety valve gear in safety valve installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320638541.8U CN203481305U (en) | 2013-10-16 | 2013-10-16 | Battery safety valve device and battery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320638541.8U CN203481305U (en) | 2013-10-16 | 2013-10-16 | Battery safety valve device and battery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481305U true CN203481305U (en) | 2014-03-12 |
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ID=50229574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320638541.8U Withdrawn - After Issue CN203481305U (en) | 2013-10-16 | 2013-10-16 | Battery safety valve device and battery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481305U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560218A (en) * | 2013-10-16 | 2014-02-05 | 广州力柏能源科技有限公司 | Battery safety valve device, battery and preparation method of battery |
| CN109698298A (en) * | 2018-12-27 | 2019-04-30 | 蜂巢能源科技有限公司 | The pressure relief device of battery core |
| WO2023137707A1 (en) * | 2022-01-21 | 2023-07-27 | 宁德时代新能源科技股份有限公司 | Energy storage system |
-
2013
- 2013-10-16 CN CN201320638541.8U patent/CN203481305U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560218A (en) * | 2013-10-16 | 2014-02-05 | 广州力柏能源科技有限公司 | Battery safety valve device, battery and preparation method of battery |
| CN103560218B (en) * | 2013-10-16 | 2016-01-13 | 广州力柏能源科技有限公司 | Cell safety valve gear and battery and preparation method thereof thereof |
| CN109698298A (en) * | 2018-12-27 | 2019-04-30 | 蜂巢能源科技有限公司 | The pressure relief device of battery core |
| WO2023137707A1 (en) * | 2022-01-21 | 2023-07-27 | 宁德时代新能源科技股份有限公司 | Energy storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Zhongliang Inventor after: Liang Weixiong Inventor after: Li Jian Inventor after: Li Changyi Inventor before: Liang Weixiong Inventor before: Li Jian Inventor before: Li Changyi |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIANG WEIXIONG LI JIAN LI CHANGYI TO: LI ZHONGLIANG LIANG WEIXIONG LI JIAN LI CHANGYI |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160113 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |