CN212874692U - Power battery explosion-proof valve and power battery - Google Patents
Power battery explosion-proof valve and power battery Download PDFInfo
- Publication number
- CN212874692U CN212874692U CN202021712121.6U CN202021712121U CN212874692U CN 212874692 U CN212874692 U CN 212874692U CN 202021712121 U CN202021712121 U CN 202021712121U CN 212874692 U CN212874692 U CN 212874692U
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- power battery
- valve rod
- cover plate
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- 230000007704 transition Effects 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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 power battery explosion-proof valve and power battery belongs to power battery technical field. The power battery explosion-proof valve comprises a valve seat, a valve rod, a valve cover plate and an elastic piece, wherein the valve seat is provided with an exhaust passage, the valve cover plate is arranged on the exhaust passage and connected with the valve seat, and the valve cover plate is provided with an exhaust hole communicated with the exhaust passage; the valve rod is arranged in the exhaust channel in a sliding and sealing manner, the valve rod can seal and block the exhaust channel to form a sliding cavity and a transition cavity, the valve rod is connected with the sliding cavity in a sliding manner, the exhaust hole is communicated with the transition cavity, and the height of the valve rod is greater than that of the transition cavity; the elastic piece is used for connecting the valve cover plate and the valve rod, and the elastic piece is arranged in the transition cavity. The power battery comprises the power battery explosion-proof valve. The utility model discloses an explosion-proof valve of power battery and power battery, the security is good, can recycle, and the cost of manufacture is low and the cycle is short, is convenient for adjust the explosion-proof pressure value of opening, and simple structure is compact, the installation of being convenient for.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to an explosion-proof valve of power battery and power battery.
Background
When the power battery is used, high-temperature and high-pressure gas is generated inside the battery due to overcharge, overdischarge or short circuit and the like, and if the gas cannot be discharged in time, the battery can explode, even serious accidents are caused. In order to solve the problems, in the existing design, the square aluminum shell battery uses the aluminum sheet to increase the blasting grains, so that the square aluminum shell battery deforms under the action of certain pressure, and then cracks at the blasting grains to discharge gas, so that the purpose of preventing the battery from cracking violently due to overlarge internal pressure is achieved. On one hand, however, the used aluminum sheet is made of special materials, generally adopts imported materials and is expensive; secondly, the explosion-proof valve is disposable, and after explosion, air can enter the battery, so that higher risk exists; furthermore, it is not easy to adjust the cracking pressure, and the cracking pressure may vary due to high temperature factors during laser welding in production. In addition, the explosion-proof valve in the prior art adopts a spring part to carry out pressure relief so as to be recycled, but the structure is complex and the installation is not easy.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a power battery explosion-proof valve, the security is good, can recycle, and the cost of manufacture is low and the cycle is short, is convenient for adjust the explosion-proof pressure value of opening, and simple structure is compact, the installation of being convenient for.
To achieve the purpose, the utility model adopts the following technical proposal:
an explosion-proof valve for a power battery, comprising:
the valve comprises a valve seat and a valve cover plate, wherein the valve seat is provided with an exhaust channel, the valve cover plate is arranged on the exhaust channel and connected with the valve seat, and the valve cover plate is provided with an exhaust hole communicated with the exhaust channel;
the valve rod is arranged in the exhaust passage in a sliding and sealing mode, the valve rod can seal and block the exhaust passage to form a sliding cavity and a transition cavity, the valve rod is connected with the sliding cavity in a sliding mode, the exhaust hole is communicated with the transition cavity, and the height of the valve rod is larger than that of the transition cavity;
and the elastic piece is used for connecting the valve cover plate and the valve rod and is arranged in the transition cavity.
Optionally, the battery explosion-proof valve further comprises a sealing member disposed between the valve stem and the vent passage to seal the vent passage.
Optionally, a first limiting portion is arranged on the valve rod, a second limiting portion is arranged on the exhaust channel, and the first limiting portion is matched with the second limiting portion to limit the valve rod on the exhaust channel.
Optionally, the first limiting portion comprises a shaft shoulder arranged circumferentially of the valve rod, the second limiting portion comprises an annular step arranged between the transition cavity and the sliding cavity, the end face of the shaft shoulder can abut against the end face of the annular step, the shaft shoulder moves in the transition cavity, and the inner diameter of the transition cavity is larger than the outer diameter of the shaft shoulder.
Optionally, the sealing element is a sealing ring sleeved on the valve rod, and the sealing ring can be in sealing connection with the exhaust channel.
Optionally, the valve rod is provided with a mounting groove, and the sealing ring is mounted on the mounting groove.
Optionally, the elastic member is a compression spring, and two ends of the compression spring abut against the end surface of the valve cover plate and the end surface of the valve rod respectively.
Optionally, the valve cover plate, the valve rod, the valve seat and the elastic member are all made of high-temperature-resistant materials.
Optionally, the vent hole comprises a plurality of through holes disposed around the resilient member.
Another object of the utility model is to provide a power battery, the security is good, and the cost of manufacture is low and the cycle is short, is convenient for adjust explosion-proof opening pressure value.
To achieve the purpose, the utility model adopts the following technical proposal:
a power battery comprises the power battery explosion-proof valve.
The utility model has the advantages that:
the utility model provides a power battery explosion-proof valve, explosion-proof valve simple structure, and valve seat, valve rod, valve cover plate and elastic component all adopt ordinary material processing to make, simple structure is reliable, has improved the security of battery, and the cost of manufacture is low and the cycle is short; in addition, the explosion-proof valve can be sealed and recycled after pressure relief, the use is convenient, and the use cost is further reduced; the pressure of the explosion-proof valve can be changed and adjusted by replacing elastic pieces with different elastic moduli, so that the opening pressure is convenient to adjust, and the influence of a production process on the opening pressure is reduced.
The utility model provides a pair of power battery through adopting foretell power battery explosion-proof valve, has reduced power battery's cost of manufacture to power battery's safety in utilization has been improved.
Drawings
Fig. 1 is an exploded view of an explosion-proof valve for a power battery according to an embodiment of the present invention;
fig. 2 is an axial sectional view of the power battery explosion-proof valve provided by the embodiment of the invention.
In the figure:
1-a valve cover plate; 11-an exhaust hole;
2-a valve stem; 21-shaft shoulder; 22-mounting grooves;
3-valve seat; 31-a transition chamber; 32-a sliding cavity; 33-an annular step;
4-sealing ring;
5-compression spring.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment provides an explosion-proof valve for a power battery, which comprises a valve seat 3, a valve rod 2, a valve cover plate 1 and an elastic part, as shown in fig. 1 and 2; specifically, an exhaust channel is formed in the valve seat 3, the valve cover plate 1 is arranged on the exhaust channel and connected with the valve seat 3, and an exhaust hole 11 communicated with the exhaust channel is formed in the valve cover plate 1; the valve rod 2 is arranged in the exhaust passage in a sliding and sealing mode, the valve rod 2 can seal and block the exhaust passage to form a sliding cavity 32 and a transition cavity 31, the valve rod 2 is connected with the sliding cavity 32 in a sliding mode, the exhaust hole 11 is communicated with the transition cavity 31, and the height of the valve rod 31 is larger than that of the transition cavity 31; the elastic member is used for connecting the valve cover plate 1 and the valve rod 2, and the elastic member is arranged in the transition cavity 31.
Initially, the opening pressure value of the explosion-proof valve is the preset compression elastic force value of the elastic piece; when the internal pressure of the power battery is increased and the internal pressure is greater than the elastic force of the elastic part, the valve rod 2 slides in the exhaust channel towards the valve cover plate 1 direction under the action of the internal pressure to compress the elastic part, at the moment, the sliding cavity 32 is communicated with the transition cavity 31, namely, the exhaust channel is communicated with the exhaust hole 11, and the internal high-pressure gas is released; after the internal gas is released, the internal pressure is reduced until the elastic part elasticity is greater than the internal pressure, the valve rod 2 slides in the direction away from the valve cover plate 1 in the exhaust passage under the elastic part elasticity action, and the valve rod 2 seals the blocking sliding cavity 32 and the transition cavity 31 again.
The explosion-proof valve is simple in structure, the valve seat 3, the valve rod 2, the valve cover plate 1 and the elastic piece are all made of common materials, and the elastic piece is arranged in the transition cavity 31, so that the explosion-proof valve is more compact, simple and reliable in structure, the safety of a battery is improved, the manufacturing cost is low, and the period is short; during installation, optionally, if the valve cover plate 1 and the valve seat 3 are of an integral structure, an elastic part is arranged in an inner space formed by the valve cover plate 1 and the valve seat 3, and then the valve rod 2 is arranged; if the valve cover plate 1 and the valve seat 3 are of a split structure, the valve cover plate 1 and the valve seat 3 can be installed firstly, an elastic part is arranged in an inner space formed by the valve cover plate 1 and the valve seat 3, and then the valve rod 2 is arranged; or the valve rod 2 is arranged in the exhaust passage of the valve seat 3, the elastic piece is arranged between the valve rods 2, and the valve cover plate 1 is arranged on the valve seat 3, so that the number of parts is small, and the assembly steps are simplified; simple structure, the equipment degree of difficulty is low, and convenient equipment has improved production efficiency. Further alternatively, as shown in fig. 1 and 2, the elastic member may be a compression spring 5, and the compression spring 5 may be welded to the valve cover plate 1 before the subsequent mounting steps are performed.
In addition, after the explosion-proof valve is decompressed, the height of the valve rod 2 is greater than that of the transition cavity 31, and no matter the valve rod 31 slides towards the valve cover plate 1 or away from the valve cover plate 1, the valve rod 31 can be always ensured to be slidably connected in the sliding cavity 32, so that the extending and retracting consistency of the valve rod 31 is good, the valve rod can be continuously sealed and recycled, the use is convenient, and the use cost is further reduced; the pressure of the explosion-proof valve can be changed and adjusted by replacing elastic pieces with different elastic moduli, so that the opening pressure is convenient to adjust, and the influence of a production process on the opening pressure is reduced.
Optionally, the battery explosion-proof valve further comprises a sealing element, the sealing element is arranged between the valve rod 2 and the exhaust channel, and when the valve rod 2 slides relative to the exhaust channel, the sealing element can be at least partially separated from one of the valve rod 2 and the exhaust channel so as to enable the sliding cavity 32 and the transition cavity 31 to be communicated, namely, the exhaust channel is communicated with the exhaust hole 11; alternatively, the seal can be at least partially separated from the valve stem 2 as the valve stem 2 slides relative to the vent passage to allow communication between the sliding chamber 32 and the transition chamber 31, i.e., the vent passage communicates with the vent orifice 11. Alternatively, the sealing member can be separated from the exhaust passage when the valve stem 2 slides relative to the exhaust passage, so that the sliding chamber 32 and the transition chamber 31 communicate, i.e., the exhaust passage communicates with the exhaust hole 11.
Optionally, the sealing element can seal and obstruct the exhaust passage to form a sliding cavity 32 and a transition cavity 31, the valve rod 2 is connected with the sliding cavity 32 in a sliding manner, the exhaust hole 11 is communicated with the transition cavity 31, when the sealing element is separated from the exhaust passage, the sliding cavity 32 is communicated with the transition cavity 31, and further the sliding cavity 32 and the transition cavity 31 are communicated with the exhaust port; specifically, the elastic member is arranged in the transition cavity 31, and the sliding cavity 32 and the transition cavity 31 are sealed and blocked by the sealing member, so that the solution or gas in the battery is prevented from leaking, and the use safety of the battery is improved.
Optionally, be equipped with first spacing portion on the valve rod 2, be equipped with the spacing portion of second on the exhaust passage, first spacing portion cooperatees with the spacing portion of second to it is spacing to realize valve rod 2 on exhaust passage, avoids valve rod 2 to slide and drops.
Optionally, a second limiting part is annularly and convexly arranged on the inner side wall of the exhaust channel, and the valve rod 2 is arranged in the second limiting part in a sliding and sealing manner; when the valve rod 2 slides towards the valve cover plate 1 to compress the elastic part, the sealing part can be separated from the second limiting part so that the sliding cavity 32 is communicated with the transition cavity 31 and the exhaust hole 11; when the valve rod 2 slides away from the valve cover plate 1 under the action of the compressed elastic piece, the sealing piece and the second limiting part can be in resealing connection to separate the sliding cavity 32 and the transition cavity 31. Specifically, when the pressure applied to the valve rod 2 is greater than the preset elastic force of the elastic member, the valve rod 2 slides relative to the exhaust passage and compresses the elastic member, and when the pressure applied to the valve rod 2 is less than the elastic force of the elastic member, the elastic member generates a restoring force on the valve rod 2 to push the valve rod 2 to move in a direction away from the valve cover plate 1. In this process, the displacement in-process of valve rod 2, the sealing member makes sliding chamber 32 and transition chamber 31 intercommunication or sealed separation, and then makes the purpose of pressure release when reaching the intercommunication, makes exhaust passage and exhaust hole 11 intercommunication pressure release when specifically compressing the elastic component.
In the embodiment, referring to fig. 1 and 2, the first limiting portion comprises a shaft shoulder 21 circumferentially arranged on the valve rod 2, the second limiting portion comprises an annular step 33 arranged between the transition cavity 31 and the sliding cavity 32, the end surface of the shaft shoulder 21 can abut against the end surface of the annular step 33, the shaft shoulder 21 moves in the transition cavity 31, when the valve rod 2 is reset under the elastic action of the elastic element, the end surfaces of the shaft shoulder 21 and the annular step 33 abut against and are connected to limit the valve rod 2 on the exhaust passage, the structure is simple and reliable, the resetting precision of the valve rod 2 is improved, and the use consistency of the explosion-proof valve is improved; in addition, the inner diameter of the transition chamber 31 is larger than the outer diameter of the shaft shoulder 21, so that a gap is arranged between the transition chamber 31 and the shaft shoulder 21 to facilitate the communication between the sliding chamber 32 and the transition chamber 31, and high-pressure gas is released.
Further optionally, the inner diameter of the transition chamber 31 is larger than that of the sliding chamber 32, so that the volume of the transition chamber 31 is increased, more released high-pressure gas can be accommodated, the explosion-proof capability of the explosion-proof valve is improved, and the use safety is improved.
Optionally, the exhaust hole 11 includes a plurality of through holes, and the plurality of through holes are arranged around the elastic member, so that the plurality of through holes are all arranged corresponding to the transition cavity 31, and the elastic member is prevented from influencing the communication between the transition cavity 31 and the through holes, so as to better discharge high-pressure gas, increase the speed, and further improve the exhaust effect of the explosion-proof valve; specifically, a plurality of through-holes symmetry sets up, and the processing of being convenient for, the outward appearance nature is good to enable gas discharge evenly, the inside atress of transition chamber 31 is even, has further prolonged the life who makes explosion-proof valve.
Referring to fig. 1 and 2, in this embodiment, the sealing element is a sealing ring 4 sleeved on the valve rod 2, the sealing ring 4 can be connected with the exhaust passage in a sealing manner, the sealing ring 4 is convenient to disassemble and assemble with the valve rod 2 and the valve seat 3, the sealing reliability is good, and the explosion reliability of the explosion-proof valve is further improved. Specifically, the valve rod 2 is provided with an installation groove 22, and the sealing ring 4 is installed on the installation groove 22, so that the sealing ring 4 is reliably installed, and the sealing performance is further improved. In this embodiment, the seal ring 4 is hermetically connected with the sliding cavity 32, when the end surface of the shaft shoulder 21 abuts against the end surface of the step 33, the seal ring 4 is matched with the inner circumferential surface of the annular step 33, and at this time, the transition cavity 31 is blocked from the sliding cavity 32; when the sealing ring 4 slides into the transition chamber 31 along with the valve rod 2, the transition chamber 31 is communicated with the sliding chamber 32. Alternatively, the annular step 33 may extend along the center line of the sliding chamber, either entirely within the sliding chamber 32 or partially within the sliding chamber.
After the gas in the battery generates high pressure, high-temperature gas may be generated at the moment of entering the power battery explosion-proof valve and discharged from the power battery explosion-proof valve, and according to experimental data, the temperature of the gas can reach 200 DEG and 300 deg. In order to avoid the explosion-proof valve of the power battery from being damaged by high temperature, the valve cover plate 1, the valve rod 2, the valve seat 3 and the elastic part are all made of high-temperature resistant materials.
Preferably, the valve cover plate 1 and the valve seat 3 are both made of an aluminum alloy material, and optionally, the valve cover plate 1 and the valve seat 3 may be integrally formed or may be separately connected. It should be noted that the valve cover plate 1 and the valve seat 3, whether integrally formed or separately connected, should be encompassed by the scope of the present application. Further alternatively, when the bonnet plate 1 and the valve seat 3 are two separate parts, they are joined by laser welding. The valve rod 2 can be made of aluminum alloy, copper or steel; the sealing ring 4 is made of fluororubber.
Because the opening pressure and the resilience force of the valve rod 2 are both influenced by the elastic part, in the embodiment, the elastic part is the compression spring 5, two ends of the compression spring 5 are respectively abutted against the end surface of the valve cover plate 1 and the end surface of the valve rod 2, and the compression spring 5 has better potential energy storage capacity and deformation resistance capacity, so that the performance of the explosion-proof valve is still reliable when the explosion-proof valve is used for multiple times, and the service life of the explosion-proof valve is prolonged; the compression spring 5 is made of metal materials and has good high-temperature resistance. Alternatively, the compression spring 5 is fixed to the bonnet plate 1 by welding, making the connection more reliable.
The embodiment also provides a power battery, which comprises the power battery explosion-proof valve, so that the manufacturing cost of the power battery is reduced, and the use safety of the power battery is improved. Optionally, the explosion-proof valve of the power battery is connected with the top cover of the power battery in a welding mode, and the connection is reliable.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An explosion-proof valve for a power battery, comprising:
the valve comprises a valve seat (3) and a valve cover plate (1), wherein the valve seat (3) is provided with an exhaust channel, the valve cover plate (1) is arranged on the exhaust channel and connected with the valve seat (3), and the valve cover plate (1) is provided with an exhaust hole (11) communicated with the exhaust channel;
the valve rod (2) is arranged in the exhaust channel in a sliding and sealing mode, the valve rod (2) can seal and block the exhaust channel to form a sliding cavity (32) and a transition cavity (31), the valve rod (2) is connected with the sliding cavity (32) in a sliding mode, the exhaust hole (11) is communicated with the transition cavity (31), and the height of the valve rod (2) is larger than that of the transition cavity (31);
the elastic piece is used for connecting the valve cover plate (1) and the valve rod (2), and the elastic piece is arranged in the transition cavity (31).
2. The power cell explosion valve of claim 1, further comprising a seal disposed between the valve stem (2) and the vent passage to seal off the vent passage.
3. The power battery explosion-proof valve according to claim 2, wherein a first limit part is arranged on the valve rod (2), a second limit part is arranged on the exhaust passage, and the first limit part and the second limit part are matched with each other to realize the limit of the valve rod (2) on the exhaust passage.
4. The power battery explosion-proof valve according to claim 3, wherein the first limiting part comprises a shaft shoulder (21) arranged circumferentially on the valve rod (2), the second limiting part comprises an annular step (33) arranged between the transition cavity (31) and the sliding cavity (32), the end surface of the shaft shoulder (21) can abut against the end surface of the annular step (33), the shaft shoulder (21) moves in the transition cavity (31), and the inner diameter of the transition cavity (31) is larger than the outer diameter of the shaft shoulder (21).
5. The explosion-proof valve for the power battery as recited in claim 2, wherein the sealing element is a sealing ring (4) sleeved on the valve rod (2), and the sealing ring (4) can be connected with the exhaust passage in a sealing manner.
6. The explosion-proof valve for the power battery as recited in claim 5, wherein the valve rod (2) is provided with an installation groove (22), and the sealing ring (4) is installed on the installation groove (22).
7. The explosion-proof valve for the power battery as recited in any one of claims 1-6, wherein the elastic member is a compression spring (5), and two ends of the compression spring (5) respectively abut against the end surface of the valve cover plate (1) and the end surface of the valve rod (2).
8. The explosion-proof valve for the power battery as claimed in any one of claims 1 to 6, wherein the valve cover plate (1), the valve rod (2), the valve seat (3) and the elastic element are all made of high-temperature resistant materials.
9. The explosion-proof valve for power battery as recited in any one of claims 1-6, wherein the vent hole (11) comprises a plurality of through holes, and a plurality of through holes are arranged around the elastic member.
10. A power cell comprising the power cell explosion-proof valve of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712121.6U CN212874692U (en) | 2020-08-17 | 2020-08-17 | Power battery explosion-proof valve and power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021712121.6U CN212874692U (en) | 2020-08-17 | 2020-08-17 | Power battery explosion-proof valve and power battery |
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| Publication Number | Publication Date |
|---|---|
| CN212874692U true CN212874692U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021712121.6U Active CN212874692U (en) | 2020-08-17 | 2020-08-17 | Power battery explosion-proof valve and power battery |
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| CN (1) | CN212874692U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284606A (en) * | 2021-12-30 | 2022-04-05 | 常州瑞德丰精密技术有限公司 | Battery explosion-proof device and power battery |
| CN114678639A (en) * | 2022-03-31 | 2022-06-28 | 欣旺达电动汽车电池有限公司 | Module upper cover, battery module and battery pack |
-
2020
- 2020-08-17 CN CN202021712121.6U patent/CN212874692U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284606A (en) * | 2021-12-30 | 2022-04-05 | 常州瑞德丰精密技术有限公司 | Battery explosion-proof device and power battery |
| CN114284606B (en) * | 2021-12-30 | 2024-01-02 | 常州瑞德丰精密技术有限公司 | Battery explosion-proof device and power battery |
| CN114678639A (en) * | 2022-03-31 | 2022-06-28 | 欣旺达电动汽车电池有限公司 | Module upper cover, battery module and battery pack |
| CN114678639B (en) * | 2022-03-31 | 2023-07-14 | 欣旺达电动汽车电池有限公司 | Module upper cover, battery module and battery pack |
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