CN110311079B - Explosion-proof breathable membrane assembly for power battery pack and battery pack explosion-proof breathable valve thereof - Google Patents
Explosion-proof breathable membrane assembly for power battery pack and battery pack explosion-proof breathable valve thereof Download PDFInfo
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- CN110311079B CN110311079B CN201910579770.9A CN201910579770A CN110311079B CN 110311079 B CN110311079 B CN 110311079B CN 201910579770 A CN201910579770 A CN 201910579770A CN 110311079 B CN110311079 B CN 110311079B
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- explosion
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- membrane
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- power battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
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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
Abstract
The invention relates to the field of battery explosion-proof vent valves, and discloses an explosion-proof vent membrane assembly and a battery pack explosion-proof vent valve thereof, wherein the explosion-proof vent membrane assembly comprises an explosion-proof vent membrane bracket (200), a combined membrane arranged on the explosion-proof vent membrane bracket (200), a vent membrane bracket (100) and a first vent membrane (110) arranged on the vent membrane bracket (100), the shapes of the explosion-proof vent membrane bracket (200) and the vent membrane bracket (100) are correspondingly arranged so that the explosion-proof vent membrane bracket (200) is embedded in the vent membrane bracket (100), and the combined membrane and the first vent membrane (110) are overlapped at intervals. The invention adopts a double-layer breathable film structure combining the combined film and the breathable film, thereby improving the safety and reliability of the explosion-proof breathable valve.
Description
Technical Field
The invention relates to the field of battery explosion-proof vent valves, in particular to an explosion-proof vent membrane assembly for a power battery pack and a battery pack explosion-proof vent valve thereof.
Background
The power battery pack is a main power source of the new energy automobile, and the use safety is the most important. When the battery pack is used in the southern climate environment with temperature difference and high humidity, the condensation phenomenon is very easy to occur, once the condensation is generated in the battery pack, if the condensation drops on a battery pack circuit, the battery pack is easy to cause short circuit and even fire explosion, and the problem needs to be solved by using an explosion-proof vent valve. However, the shapes and sizes of the existing battery packs vary greatly, the requirements of the battery packs on the explosion-proof ventilation amount can also change, and the explosion-proof ventilation valves need to be made into explosion-proof ventilation valves with different sizes according to the sizes of most of the battery packs so as to meet the requirements of performance parameters such as different ventilation amounts before explosion, explosion pressure and the like, so that the universality of products is poor. In addition, the explosion-proof vent valve of current battery package is inside only to be equipped with the explosion-proof ventilated membrane of individual layer, in case meet special circumstances and take place to break, can directly lead to the vent valve to become invalid, has serious potential safety hazard.
Disclosure of Invention
The invention aims to solve the problems of poor product universality and potential safety hazard of a single-layer explosion-proof vent membrane in the prior art, and provides an explosion-proof vent membrane assembly for a power battery pack and an explosion-proof vent valve for the power battery pack.
In order to achieve the above object, in one aspect, the present invention provides an explosion-proof breathable film assembly for a power battery pack, which includes an explosion-proof breathable film support, a combined film disposed on the explosion-proof breathable film support, a breathable film support, and a first breathable film disposed on the breathable film support, wherein the explosion-proof breathable film support and the breathable film support are correspondingly shaped so that the explosion-proof breathable film support is embedded in the breathable film support, and the combined film and the first breathable film are stacked at an interval.
Preferably, the explosion-proof ventilated membrane support comprises a plurality of unit frames, the combined membrane comprises an explosion-proof membrane and a second ventilated membrane which are arranged separately, and the unit frames comprise a first unit frame for arranging the explosion-proof membrane and a second unit frame for arranging the second ventilated membrane.
Preferably, the explosion-proof membrane) is arranged on the explosion-proof and breathable membrane bracket through an adhesive layer; the coating area of the adhesive layer is in direct proportion to the preset bursting pressure born by the explosion-proof breathable membrane component for the power battery pack.
Preferably, the plurality of unit frames includes a central unit frame located at the center and a peripheral unit frame disposed around the central unit frame.
Preferably, the explosion-proof membrane is arranged in the central unit frame; the explosion-proof film and the second breathable film are arranged in the peripheral unit frames respectively.
Preferably, the unit frame has a circular or regular polygonal contour.
Preferably, the cell frames are regular hexagons, and each edge of the central cell frame is aligned with the corresponding peripheral cell frame.
The invention provides a battery pack explosion-proof vent valve, which comprises a valve body, wherein a protective cover is arranged at one end of the valve body, a sealing groove is formed in the periphery of the other end of the valve body, and a sealing strip is correspondingly arranged in the sealing groove; the valve body is internally provided with a containing through hole, the containing through hole is internally provided with the explosion-proof breathable membrane component for the power battery pack, and the outer peripheral surface of the explosion-proof breathable membrane component for the power battery pack is attached to the inner peripheral surface of the containing through hole.
Preferably, the protective cover is a cover body with a flange, and a plurality of vent holes are formed in the cover body; the valve body is characterized in that the flange is provided with a clamping hole penetrating through the flange, and the outer peripheral surface of one end of the valve body is convexly provided with a clamping connector corresponding to the clamping hole.
Preferably, the other end of the valve body is provided with a sealing groove which is arranged corresponding to the sealing strip; the sealing grooves comprise inner layer sealing grooves and outer layer sealing grooves with different diameters, and the depth of each inner layer sealing groove is greater than that of each outer layer sealing groove; the sealing strip comprises an inner sealing ring and an outer sealing ring which are different in diameter, and the width of the inner sealing ring is larger than that of the outer sealing ring.
Through the technical scheme, the double-layer breathable film structure combining the combined film and the breathable film is adopted, so that the safety and reliability of the explosion-proof breathable valve are improved; through the different quantity combinations of rupture membrane and ventilated membrane, can satisfy the ventilative volume and the bursting pressure nature of different battery packages, simple structure and product commonality are strong.
Drawings
FIG. 1 is a schematic exploded view of an explosion-proof vent assembly for a power battery pack;
FIG. 2 is a schematic structural diagram of a valve body of an explosion-proof vent valve of a battery pack;
FIG. 3 is a schematic view of the overall structure of the protective cover;
FIG. 4 is a schematic perspective view of the inner and outer dual-layer sealing rings;
FIG. 5 is a view taken along line A of FIG. 4;
FIG. 6 is an exploded view of an explosion-proof vent valve of a battery pack;
fig. 7 is a schematic view of the whole assembly structure of the explosion-proof vent valve of the battery pack.
Description of the reference numerals
100 vented membrane holder 110 first vented membrane 200 explosion-proof vented membrane holder
201 unit frame 210 second breathable film 220 explosion-proof film
300 valve body 310 receives through-hole 320 bayonet joint
331 inner seal groove 332 outer seal groove 400 protective cover
501 inner seal ring 502 outer seal ring 410 flange
411 vent hole 420
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.
As shown in fig. 1, in one aspect, the present invention provides an explosion-proof breathable film assembly for a power battery pack, which includes an explosion-proof breathable film support 200, a combined film disposed on the explosion-proof breathable film support 200, a breathable film support 100, and a first breathable film 110 disposed on the breathable film support 100, wherein the explosion-proof breathable film support 200 and the breathable film support 100 are correspondingly shaped so that the explosion-proof breathable film support 200 is embedded in the breathable film support 100, and the combined film and the breathable film 110 are stacked at intervals.
Specifically, the explosion-proof and breathable membrane support 200 includes a plurality of unit frames 201, and the unit frames 201 are uniformly arranged. The combined membrane comprises an explosion-proof membrane 220 and a second air-permeable membrane 210 which are separately arranged, and the unit frame 201 comprises a first unit frame for arranging the explosion-proof membrane 220 and a second unit frame for arranging the second air-permeable membrane 210. That is, the explosion-proof membrane 220 and the second gas-permeable membrane 210 are respectively arranged on the unit frame 201 in a quantitative ratio, and the sum of the arrangement number of the explosion-proof membrane 220 and the second gas-permeable membrane 210 on the explosion-proof gas-permeable membrane support 200 is the same as the arrangement number of the unit frame 201. In general, the explosion-proof membrane 220 is disposed on the explosion-proof and breathable membrane support 200 through a bonding layer, and the coating area of the bonding layer is in direct proportion to the burst pressure borne by the explosion-proof and breathable membrane assembly for the power battery pack, that is, the larger the coating area of the bonding layer is, the larger the burst pressure borne by the explosion-proof and breathable membrane assembly for the power battery pack and the explosion-proof and breathable valve provided with the explosion-proof and breathable membrane assembly for the power battery pack can be. Of course, the size of the coating area is also related to the width of the explosion-proof gas-permeable membrane support 200, and in practical operation, the size of the coating area can be selected according to the requirement of explosion-proof pressure on the premise that the width of the support is allowed.
The plurality of unit frames 201 includes a central unit frame located at the center and peripheral unit frames disposed around the central unit frame. In the embodiment shown in fig. 1, the unit frames 201 are arranged on the explosion-proof breathable film support 200 in an annular array, and include one unit frame arranged at the center of the annular array and six unit frames annularly arranged at the center for one circle. As shown in fig. 6, an explosion-proof membrane 220 is arranged in a central unit frame located at the center of the explosion-proof and breathable membrane support 200; an explosion-proof membrane 220 and a second gas-permeable membrane 210 are respectively arranged in the peripheral unit frame around the center. The quantity of the explosion-proof membrane 220 and the second air-permeable membrane 210 arranged on the support 200 of the explosion-proof air-permeable membrane can adopt different digital combinations according to different air permeability requirements, such as: in the example shown in fig. 1, if the expression "the number of the explosion-proof membranes + the number of the second gas permeable membranes" is used, combinations of the number of the explosion-proof membranes + the number of the second gas permeable membranes may be 1+6, 2+5, 3+4, 4+3, 5+2, or 6+ 1. Thus, the vent membrane 220 and the second vent membrane 210 disposed on the vent membrane support 200 can be freely combined with the first vent membrane 110 disposed on the vent membrane support 100. According to the explosion-proof breathable membrane component for the power battery pack, the combined membrane and the breathable membrane can be combined into different requirements on the breathable amount according to the requirements of the battery pack, the explosion-proof breathable membrane component can be arranged in an explosion-proof valve with the same shape and mechanical structure, the different breathable amounts and different explosion pressures can be set, the platform arrangement of the explosion-proof breathable valve can be realized, the production cost is reduced, and the product competitiveness is improved. In addition, as the anti-explosion breathable film component for the power battery pack adopts a double-layer breathable film structure, if the first layer breathable film fails, the second layer combined film is used for standby, so that the safety and reliability are improved, and the harm of water vapor entering the battery pack to condensation on the battery pack can be reduced.
It should be noted that, in order to ensure explosion-proof and uniform ventilation, the unit frame 201 is generally configured to have a regular geometric shape, including a circular or regular polygonal outline. In the embodiment shown in fig. 1, the cell frame 201 is a regular hexagon, and each edge of the central cell frame is aligned with the corresponding peripheral cell frame. Seven regular hexagons which are tightly connected together are included in the complete anti-explosion vent-membrane support 200, and the anti-explosion vent-membrane support 200 is embedded in the accommodating through hole 310 of the valve body 300 and is embedded with the cylindrical main body of the valve body 300, so that the anti-extrusion and anti-collision performance of the anti-explosion vent valve can be improved. It should be noted that the breathable film support 100 and the explosion-proof breathable film support 200 are made of flame-retardant plastic and are manufactured by an injection molding and integral molding process.
As shown in fig. 2, 6 and 7, a second aspect of the present invention provides an explosion-proof vent valve for a battery pack, which includes a valve body 300, wherein the valve body 300 is made of a flame-retardant plastic material by an injection molding process. One end of valve body 300 is equipped with visor 400, the seal groove has been seted up in the other end periphery of valve body 300, the correspondence is equipped with the sealing strip in the seal groove, set up holding through-hole 310 in the valve body 300, the holding is as above in the holding through-hole 310 the explosion-proof breathable membrane subassembly that is used for the power battery package, the outer peripheral surface of the explosion-proof breathable membrane subassembly that is used for the power battery package with the laminating of the inner peripheral surface of holding through-hole 310 mutually.
The main body of the valve body 300 has a cylindrical shape, one end of the cylinder is connected to the above-mentioned protective cap 400, and the other end of the cylinder has a disk structure with six screw holes, that is, the main body of the valve body is composed of a cylinder and a disk. The accommodating through holes 310 are hollow regular hexagon through holes formed in the cylinder of the valve body 300, the anti-extrusion and anti-collision capacity of the anti-explosion vent valve is improved due to the regular hexagon structure, steel wire thread sleeves can be embedded in six thread holes formed in the bottom disc, and the anti-explosion vent valve is connected with the battery shell through bolts. Since the structure of the valve body does not belong to the core content of the technical scheme of the invention, the description is omitted.
Referring to fig. 3, the protective cover 400 is a cover body with a flange 410, in the embodiment shown in fig. 3, a circular cover body, made of flame retardant plastic material by injection molding process. The circular cover body is provided with a plurality of vent holes 420, so that the gas inside and outside the battery pack firstly passes through the vent holes 420 arranged on the protective cover 400 and then exchanges through the vent film of the explosion-proof valve, the balance of the internal and external air pressure of the battery pack is kept, the combined film and the explosion-proof film are protected, and the size of the vent holes 420 arranged on the upper surface of the protective cover 400 needs to meet the technical requirement of IP 67. The flange 410 is provided with a clamping hole 411 which penetrates through the flange, and the outer peripheral surface of one end of the valve body 300 is convexly provided with a clamping head 320 which is buckled with the clamping hole 411 correspondingly. The valve body 300 and the protection cover 400 are assembled together in a snap-fit manner through the snap-fit hole 411 and the snap-fit joint 320, so that the connection between the valve body 300 and the protection cover is firmer and the reliability is higher. In addition, the valve body 300 and the protection cover 400 can be connected by a thread or bonded together by structural adhesive.
As shown in fig. 2 in combination with fig. 4 and 5, the bottom of the main body disk is provided with a double-layer sealing groove structure, and the double-layer sealing groove has different groove depths, namely, a shallow outer part and a deep inner part. The other end of the valve body 300 is provided with a sealing groove corresponding to the sealing strip, the sealing groove comprises an inner layer and an outer layer with different diameters, and the depth of the inner layer sealing groove 331 is greater than that of the outer layer sealing groove 332; the sealing strips are correspondingly arranged into an inner ring and an outer ring with different diameters, and the width of the inner sealing ring 501 is larger than that of the outer sealing ring 502. Usually, the sealing ring is made of EPDM or silicone rubber by a molding process. The anti-explosion vent valve provided by the invention is provided with the double-layer sealing groove with the shallow outer part and the deep inner part and the double-layer sealing strip with the long outer part and the short inner part, which are correspondingly matched, so that double sealing is realized on the premise of ensuring the compression amount of the sealing strip, the sealing performance between the anti-explosion vent valve and the shell of the battery pack is improved, and the safety and reliability of the battery pack are improved.
The explosion-proof breathable membrane component for the power battery pack mainly comprises an explosion-proof breathable membrane support and a breathable membrane support, wherein the explosion-proof breathable membrane and the breathable membrane are respectively arranged on the explosion-proof breathable membrane support and the breathable membrane support. Because explosion-proof ventilated membrane support comprises a plurality of unit frames, including setting up the unit frame in the middle and around the unit frame, and adopt the middle to be the rupture membrane, around for the mode setting of rupture membrane and ventilated membrane combination. Because the explosion-proof membrane only has the explosion function and does not have the ventilation function, and the combined membrane has both the explosion-proof function and the ventilation function, after the explosion-proof membrane is pasted on the surface of the bracket by adopting the structural adhesive, the explosion pressure is controlled by the amount of the adhesive, particularly, the coating area of the pasting layer is in direct proportion to the explosion pressure which can be born. The explosion-proof membrane in rupture membrane and the combination membrane viscose volume is the same so the burst pressure is the same, and when the thermal runaway takes place in the battery package, atmospheric pressure in the battery package increases suddenly, and rupture membrane takes place the blasting, and the directional exhaust pressure release of gas emergence in the battery package protects the passenger, prevents that battery package casing from taking place splash formula fracture. Can arrange more ventilated membranes of combination and replace the rupture membrane when the great ventilative volume of needs, satisfy battery package ventilative volume demand, can adopt 1+6, 2+5, 3+4, 4+3, 5+2 and 6+ 1's mode to combine, the setting of different ventilative volumes can be realized in this kind of setting, be favorable to the rupture valve to realize the platformization, adopt the setting of two layers of ventilated membranes simultaneously, the setting of double-deck ventilated membrane has improved the reliable durability of explosion-proof ventilative valve, be favorable to realizing battery package fail safe nature simultaneously.
In addition, the explosion-proof vent membrane assembly for the power battery pack is arranged in the valve body of the explosion-proof vent valve for the power battery pack, and can meet the requirements of different air permeability quantities through the explosion-proof vent valve for the power battery pack by combining the combination membrane and the vent membrane under the condition of reducing condensation generated by the explosion-proof vent valve for the battery pack, so that the free combination of the number of the explosion-proof membrane and the vent membrane is realized, the production cost is greatly reduced, the product realizes the platform structural arrangement, and the safety and reliability of the explosion-proof valve are improved by adopting the structural arrangement of the double-layer vent membrane and the double-layer sealing strip.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the present invention, many simple modifications may be made to the technical solution of the present invention, for example, the regular hexagon of the unit frame may be changed to other regular polygons; the setting mode of the explosion-proof membrane and the second breathable membrane on the explosion-proof breathable membrane support can also adopt various forms, the explosion-proof membrane does not necessarily need to be positioned in the middle unit frame, and the second breathable membrane can also be positioned, so long as the combination of the explosion-proof membrane and the second breathable membrane can be realized, but the respective setting positions can be selected according to actual needs. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The utility model provides an explosion-proof ventilated membrane subassembly for power battery package, its characterized in that includes explosion-proof ventilated membrane support (200) and sets up combined membrane on explosion-proof ventilated membrane support (200), still includes ventilated membrane support (100) and sets up first ventilated membrane (110) on ventilated membrane support (100), the shape of explosion-proof ventilated membrane support (200) and ventilated membrane support (100) corresponds the setting so that explosion-proof ventilated membrane support (200) laminating inlays to be established in ventilated membrane support (100), combined membrane is including separately explosion-proof membrane (220) and second ventilated membrane (210) that set up, combined membrane with first ventilated membrane (110) interval superpose.
2. The explosion-proof vent assembly for a power battery pack according to claim 1, wherein the explosion-proof vent assembly support (200) comprises a plurality of unit frames (201), and the unit frames (201) comprise a first unit frame for disposing the explosion-proof membrane (220) and a second unit frame for disposing the second vent membrane (210).
3. The explosion-proof breathable membrane assembly for a power battery pack according to claim 1, wherein the explosion-proof membrane (220) is arranged on the explosion-proof breathable membrane bracket (200) through an adhesive layer;
the coating area of the adhesive layer is in direct proportion to the preset bursting pressure born by the explosion-proof breathable membrane component for the power battery pack.
4. The explosion-proof vent assembly for a power battery pack according to claim 2, wherein the plurality of unit frames (201) includes a central unit frame located at the center and peripheral unit frames disposed around the central unit frame.
5. The explosion-proof vent assembly for a power battery pack of claim 4, wherein the center unit frame has the explosion-proof membrane (220) disposed therein; the explosion-proof membrane (220) and the second breathable membrane (210) are respectively arranged in the peripheral unit frames (201).
6. The explosion-proof air-permeable membrane assembly for a power battery pack according to claim 4, wherein the unit frame (201) has a circular or regular polygonal contour.
7. The explosion-proof and breathable membrane assembly for power battery packs according to claim 6, characterized in that the unit frames (201) are regular hexagons, and each edge of the central unit frame is aligned with a corresponding peripheral unit frame.
8. The battery pack explosion-proof vent valve comprises a valve body (300), wherein a protective cover (400) is arranged at one end of the valve body (300), a sealing groove is formed in the periphery of the other end of the valve body (300), and a sealing strip is correspondingly arranged in the sealing groove; the valve body (300) is internally provided with a containing through hole (310), and the containing through hole (310) is internally provided with the explosion-proof breathable membrane assembly for the power battery pack according to any one of claims 1 to 7, and the outer peripheral surface of the explosion-proof breathable membrane assembly for the power battery pack is attached to the inner peripheral surface of the containing through hole.
9. The explosion-proof vent valve of a battery pack according to claim 8, wherein the protective cover (400) is a cover body with a flange (410), and a plurality of vent holes (420) are formed on the cover body;
the flange (410) is provided with a clamping hole (411) penetrating through the flange, and the peripheral surface of one end of the valve body (300) is convexly provided with a clamping connector (320) which is correspondingly buckled with the clamping hole (411).
10. The explosion-proof vent valve of battery pack according to claim 8, characterized in that the other end of the valve body (300) is provided with a sealing groove corresponding to the sealing strip;
the sealing grooves comprise inner layer sealing grooves (331) and outer layer sealing grooves (332) with different diameters, and the depth of the inner layer sealing grooves (331) is larger than that of the outer layer sealing grooves (332);
the sealing strip comprises an inner sealing ring (501) and an outer sealing ring (502) which are different in diameter, and the width of the inner sealing ring (501) is larger than that of the outer sealing ring (502).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910579770.9A CN110311079B (en) | 2019-06-28 | 2019-06-28 | Explosion-proof breathable membrane assembly for power battery pack and battery pack explosion-proof breathable valve thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910579770.9A CN110311079B (en) | 2019-06-28 | 2019-06-28 | Explosion-proof breathable membrane assembly for power battery pack and battery pack explosion-proof breathable valve thereof |
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| CN110311079A CN110311079A (en) | 2019-10-08 |
| CN110311079B true CN110311079B (en) | 2022-02-01 |
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Families Citing this family (3)
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| CN112310552B (en) * | 2020-02-28 | 2023-01-31 | 宁德时代新能源科技股份有限公司 | Explosion-proof valve, battery pack and device |
| DE102021115433A1 (en) * | 2021-06-15 | 2022-12-15 | Mann+Hummel Gmbh | Degassing unit and housing, in particular battery housing |
| CN114362480A (en) * | 2021-12-17 | 2022-04-15 | 中车永济电机有限公司 | Be applicable to locomotive converter cabinet body ventilation plug explosion-proof construction |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012022346B4 (en) * | 2012-11-15 | 2018-03-22 | Mann+Hummel Gmbh | Battery Housing |
| DE102014111041B4 (en) * | 2014-08-04 | 2023-07-06 | Lisa Dräxlmaier GmbH | Degassing valve for degassing a housing, in particular a housing of a battery in a motor vehicle |
| EP3046161B1 (en) * | 2015-01-13 | 2017-12-20 | Bimed Teknik Aletler Sanayi ve Ticaret A.S. | Pressure relief device |
| JP6513423B2 (en) * | 2015-02-24 | 2019-05-15 | Nok株式会社 | Explosion-proof valve |
| CN206098495U (en) * | 2016-08-31 | 2017-04-12 | 浙江伊卡新能源汽车有限公司 | Take battery box of explosion -proof valve |
| CN207145701U (en) * | 2017-07-13 | 2018-03-27 | 徐州八方安全设备有限公司 | A kind of vacuum/pressurized blasting piece device of releasing of ultralow pressure |
| CN107178638B (en) * | 2017-07-13 | 2019-02-19 | 芜湖天量电池系统有限公司 | A kind of explosion-proof vent valve |
| CN107339478B (en) * | 2017-07-27 | 2023-04-11 | 惠州市沃瑞科技有限公司 | Be applied to explosion-proof ventilation valve of new energy automobile upper band metal rupture disk |
| CN108533811B (en) * | 2018-04-23 | 2024-04-12 | 东莞蒲微防水透气膜材料有限公司 | Explosion-proof valve for rapidly inflating and detecting tightness of box body and detection method |
| CN108807785B (en) * | 2018-06-29 | 2021-08-03 | 北京新能源汽车股份有限公司 | Power battery explosion-proof device, power battery and electric automobile |
| CN109659467A (en) * | 2019-01-28 | 2019-04-19 | 惠州市欣宇科技有限公司 | A kind of explosion-proof vent valve |
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