CN211045491U - Battery top cover with fire extinguishing device and square battery - Google Patents
Battery top cover with fire extinguishing device and square battery Download PDFInfo
- Publication number
- CN211045491U CN211045491U CN202020005055.2U CN202020005055U CN211045491U CN 211045491 U CN211045491 U CN 211045491U CN 202020005055 U CN202020005055 U CN 202020005055U CN 211045491 U CN211045491 U CN 211045491U
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- battery
- top cover
- battery top
- fire extinguishing
- bottom plate
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- 238000007789 sealing Methods 0.000 claims abstract description 68
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 1
- 230000005389 magnetism Effects 0.000 description 9
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007086 side reaction 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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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery top cover with a fire extinguishing device, which comprises a battery top cover bottom plate, and a positive pole column, a negative pole column, a safety valve and a fire extinguishing device which are arranged on the battery top cover bottom plate; the method is characterized in that: the fire extinguishing device comprises a fixed rod fixedly arranged on the bottom plate of the battery top cover and around the safety valve, a magnetic sealing sheet arranged on the fixed rod and hermetically covered above the safety valve, and a magnetic part embedded on the bottom plate of the battery top cover and arranged at the bottom of the magnetic sealing sheet. The utility model provides a take extinguishing device's battery top cap can appear unusually at the battery, effectual isolated air after the relief valve pressure release is accomplished prevents that the inside combustible substance of battery from continuing the burning to reach the purpose of putting out a fire. The utility model also provides a square battery of taking extinguishing device utilizes the battery top cap of taking extinguishing device to replace the battery top cap among the prior art and assembles into square battery, has good fire extinguishing performance and high security performance.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery, concretely relates to take extinguishing device's battery top cap and applied this battery top cap's square battery.
Background
With the increasing severity of energy crisis and environmental pollution problems, new energy vehicles are more and more favored by various countries by virtue of the great advantages in energy conservation and emission reduction. The electric automobile is the main body of the new energy automobile at present, and the power battery is the most important power source of the electric automobile. The lithium ion battery gradually becomes the mainstream of the power battery of the electric automobile due to the characteristics of high specific energy, long service life and the like, but the safety accident of the lithium ion battery which is characterized by monomer thermal runaway sometimes happens, and the large-scale application of the electric automobile is limited.
Thermal runaway refers to the phenomenon that the battery temperature rises uncontrollably until explosion and fire happen due to the heat release chain reaction of single batteries. When the battery is in abnormal working conditions, such as overcharge and overdischarge, and is used in a high-heat environment, the electrode material and the electrolyte generate corresponding side reactions and generate a large amount of gas, and meanwhile, the battery shell continuously expands along with the increase of internal air pressure, so that the battery can explode and catch fire when the battery cannot expand to break through a volume critical state, and serious safety problems are caused.
In the case of a prismatic battery, in order to prevent the battery from causing a serious safety problem when thermal runaway occurs, a safety valve is generally designed in the prismatic battery. When the battery produces gas to make the internal pressure of the battery reach a certain value, the safety valve is opened to release the pressure, so that the gas in the battery is released, and the battery is prevented from further expansion, explosion and fire. However, when the safety valve is opened by excessive pressure inside the battery, the gas inside the battery carries the electrolyte out at an extremely high rate and produces severe friction with the safety valve port. When the temperature generated by high-speed friction reaches the flash point of the electrolyte, the electrolyte can detonate, and the battery can not explode but continuously catch fire until the combustible materials in the battery are burnt.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a take extinguishing device's battery top cap can appear unusually at the battery, effectual isolated air after the relief valve pressure release is accomplished prevents that the inside combustible substance of battery from continuing the burning to reach the purpose of putting out a fire. The utility model also provides a square battery of taking extinguishing device utilizes the battery top cap of taking extinguishing device to replace the battery top cap among the prior art and assembles into square battery, has good fire extinguishing performance and high security performance.
The utility model discloses the technological effect that will reach is realized through following scheme:
the utility model provides a take extinguishing device's battery top cap, include battery top cap bottom plate and locate anodal post, negative pole post and relief valve on the battery top cap bottom plate, its characterized in that: still be equipped with extinguishing device on the battery top cap bottom plate, can be at effectual isolated air of relief valve pressure release completion back, prevent that the battery is inside to continue burning to reach the purpose of putting out a fire.
The fire extinguishing device comprises a fixed rod fixedly arranged on the bottom plate of the battery top cover and around the safety valve, a magnetic sealing sheet arranged on the fixed rod and hermetically covered above the safety valve, and a magnetic part embedded on the bottom plate of the battery top cover and arranged at the bottom of the magnetic sealing sheet. The fire extinguishing device adopts a magnetic sealing sheet movably arranged on a fixed rod and a magnetic part which is embedded on a bottom plate of a top cover of the battery and arranged at the bottom of the magnetic sealing sheet as a fire extinguishing device to replace the use of a safety valve protection sheet in the prior art; when the battery is normally used, the magnetic sealing sheet and the magnetic part are mutually attracted and are hermetically covered above the safety valve under the action of magnetic force, so that the safety valve can be effectively protected and prevented from being damaged by external force; when the battery appears unusually, internal pressure is too big, when the relief valve needs the pressure release to be explosion-proof, the magnetic seal piece of sealed cover in relief valve top can be through reciprocating of the direction of dead lever and the magnetic force effect of magnetic part freedom on the dead lever, not only does not influence the smooth explosion-proof of carrying on of relief valve, can accomplish the effectual isolated air in relief valve pressure release moreover, prevent that the battery is inside to continue burning to reach the purpose of putting out a fire, the effectual holistic security performance of battery and the explosion-proof performance of pressure release that has improved.
In order to further optimize the overall structure, the positive pole column and the negative pole column are arranged at two ends of the bottom plate of the battery top cover, and the safety valve is arranged in the middle of the bottom plate of the battery top cover.
Furthermore, the magnetic sealing piece is a nickel metal piece or a cobalt metal piece, both the nickel metal and the cobalt metal are made of magnetic metal materials, and have good magnetism and a higher melting point, wherein the melting point of the nickel metal is about 1453 ℃, and the melting point of the cobalt metal is about 1495 ℃. And the magnetic sealing sheet is provided with a through hole matched with the fixed rod, and the through hole is sleeved on the fixed rod, so that the sealing covering of the safety valve by the magnetic sealing sheet and the up-and-down movement of the magnetic sealing sheet on the fixed rod can be realized.
Furthermore, the fixed rod is a conical rod structure with the diameter gradually increased from bottom to top, the diameter of the middle lower part of the conical rod structure is smaller than that of the through hole, the diameter of the top of the conical rod structure is larger than that of the through hole, when the battery is abnormal, the safety valve releases pressure, the position of the magnetic sealing piece moving upwards can be effectively limited, the magnetic sealing piece is prevented from being separated from the fixed rod due to the impact force inside the battery, and the function of extinguishing fire by isolating air is lost. Preferably, the height of the part, with the diameter smaller than the diameter of the through hole, of the conical rod structure is 5-10mm, so that the action of the magnetic attraction force between the magnetic sealing sheet and the magnetic part can be effectively ensured.
Furthermore, the fixing rod is of a T-shaped rod structure and comprises a cylindrical rod fixedly arranged on the bottom plate of the battery top cover and a limiting rod fixedly arranged at the top of the cylindrical rod. The cylindrical rod is used for fixing the position of the magnetic sealing sheet, so that the magnetic sealing sheet is kept above the safety valve to move up and down; the gag lever post is used for restricting the ascending height of magnetism gasket, prevents that magnetism gasket from breaking away from the dead lever, loses the function that isolated air of restoring to the throne put out a fire.
For further optimizing the structure, the dead lever is the column structure, including set firmly in the cylinder pole on the battery top cap bottom plate, and set firmly in the limiting plate at cylinder pole top.
Furthermore, the diameter of the cylindrical rod is smaller than that of the through hole, so that the magnetic sealing sheet can be effectively ensured to move up and down on the fixed rod; the length of the limiting rod and the maximum overall dimension of the limiting plate are both larger than the diameter of the through hole, and the limiting rod and the limiting plate are used for guaranteeing the effectiveness of limiting the magnetic sealing sheet.
Furthermore, the fixing rods are symmetrically arranged on the bottom plate of the top cover of the battery and around the safety valve, so that the stress balance of the magnetic sealing sheets can be effectively ensured, the magnetic sealing sheets are prevented from being clamped on the fixing rods due to uneven stress, and preferably, the number of the fixing rods is 4 or 6.
Furthermore, the magnetic parts are symmetrically arranged around the safety valve, so that the magnetic sealing sheet can be effectively ensured to be stressed evenly, the safety valve can be effectively covered in a sealing manner, and the function of isolating air and extinguishing fire is achieved; preferably, the magnetic member is a magnetic sheet, a magnetic block or a magnetic strip structure.
The square battery with the fire extinguishing device comprises a shell, a battery core and the battery top cover with the fire extinguishing device; the battery core is arranged inside the shell, and the battery top cover with the fire extinguishing device is arranged on the shell to form a complete square battery with good fire extinguishing performance and high safety performance.
The utility model discloses a take extinguishing device's battery top cap has following advantage:
the utility model provides a take extinguishing device's battery top cap, adopt movable mounting to seal the piece and inlay on battery top cap bottom plate in the magnetism on the dead lever, locate the magnetism spare of magnetism seal piece bottom as extinguishing device, replace the use of relief valve screening glass among the prior art, not only can effectual protection relief valve, prevent that the relief valve from receiving the destruction of external force, it is explosion-proof not to influence the smooth pressure release that carries on of relief valve, and can accomplish the effectual isolated air in back at the relief valve pressure release, prevent that the inside continuation of battery from burning in order to reach the purpose of putting out a fire.
The utility model also provides a square battery of taking extinguishing device utilizes the battery top cap of taking extinguishing device to replace the battery top cap among the prior art and assembles into square battery, has good fire extinguishing performance and high security performance.
Drawings
FIG. 1 is a top view of a battery top cover with a fire extinguishing apparatus according to the present invention;
FIG. 2 is a sectional view of the battery top cover with fire extinguishing device according to the present invention;
fig. 3 is a schematic structural view of the fixing rod of the present invention.
The reference numerals are explained below:
100. a battery top cover bottom plate; 110. a positive post; 120. a negative pole post; 130. a safety valve; 140. a fire extinguishing device; 141. a magnetic sealing sheet; 142. fixing the rod; 1421. a cylindrical rod; 1422. a limiting rod; 1423. a limiting plate; 143. a magnetic member.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The battery top cover with the fire extinguishing device in the embodiment, as shown in fig. 1-2, includes a battery top cover bottom plate 100, and a positive pole 110, a negative pole 120 and a safety valve 130 which are arranged on the battery top cover bottom plate; the positive pole column and the negative pole column are arranged at two ends of the bottom plate of the battery top cover, and the safety valve is arranged in the middle of the bottom plate of the battery top cover.
The battery top cover bottom plate is further provided with a fire extinguishing device 140, the fire extinguishing device comprises a fixing rod 142 fixedly arranged on the battery top cover bottom plate and around the safety valve, a magnetic sealing sheet 141 arranged on the fixing rod and hermetically covered above the safety valve, and a magnetic part 143 embedded on the battery top cover bottom plate and arranged at the bottom of the magnetic sealing sheet.
Wherein, the concrete structural design of extinguishing device is as follows:
example 1:
as shown in fig. 3 (a), the fixing rod is a tapered rod structure with a gradually enlarged diameter from bottom to top, the diameter of the middle lower part of the tapered rod structure is smaller than that of the through hole on the magnetic sealing sheet, and the diameter of the top part of the tapered rod structure is larger than that of the through hole on the magnetic sealing sheet; when the battery is abnormal, and the relief valve releases pressure, the part of the conical rod structure with the diameter larger than the through hole on the magnetic sealing piece can effectively limit the magnetic sealing piece to continue moving upwards, so that the magnetic sealing piece is prevented from being separated from the fixed rod due to the impact force inside the battery, and the function of extinguishing fire by isolated air is lost. Preferably, the height of the conical rod structure, which is smaller than the diameter part of the through hole on the magnetic sealing sheet, is 5-10mm, so that the effect of magnetic attraction between the magnetic sealing sheet and the magnetic part can be effectively ensured, the phenomenon that the magnetic sealing sheet cannot be attracted by the magnetic part to cover the safety valve due to the overlarge distance between the magnetic sealing sheet and the magnetic part is prevented, and the purpose of isolating air and extinguishing fire is achieved.
The magnetic sealing piece is a nickel metal piece or a cobalt metal piece, and the nickel metal and the cobalt metal are both made of magnetic metal materials and have good magnetism and higher melting point, wherein the melting point of the nickel metal is about 1453 ℃, and the melting point of the cobalt metal is about 1495 ℃. And the magnetic sealing sheet is provided with a through hole matched with the fixing rod, and the fixing rod is sleeved with the through hole, so that the magnetic sealing sheet can cover the safety valve in a sealing manner and can move up and down on the fixing rod. The magnetic parts are symmetrically arranged around the safety valve, so that the magnetic sealing sheet can be effectively ensured to be stressed evenly, the safety valve is effectively covered in a sealing way, and the function of isolating air and extinguishing fire is achieved; preferably, the magnetic member is a magnetic sheet, a magnetic block or a magnetic strip structure.
Example 2:
the magnetic sealing sheet and the magnetic member of the fire extinguishing apparatus are the same as those of embodiment 1, and the main difference is that: the fixing rod is a T-shaped rod structure as shown in fig. 3 (b), and includes a cylindrical rod 1421 fixed on the bottom plate of the top cover of the battery, and a limiting rod 1422 fixed on the top of the cylindrical rod. The cylindrical rod is used for fixing the position of the magnetic sealing sheet, so that the magnetic sealing sheet is kept above the safety valve to move up and down; the gag lever post is used for restricting the ascending height of magnetism gasket, prevents that magnetism gasket from breaking away from the dead lever, loses the function that isolated air of restoring to the throne put out a fire.
Example 3:
the magnetic sealing sheet and the magnetic member of the fire extinguishing apparatus are the same as those of embodiment 1, and the main difference is that: the fixing rod is shown in fig. 3 (c), and is a pillar structure, and includes a cylindrical rod 1421 fixed on the bottom plate of the top cover of the battery, and a limiting plate 1423 fixed on the top of the cylindrical rod. The cylindrical rod is used for fixing the position of the magnetic sealing sheet, so that the magnetic sealing sheet is kept above the safety valve to move up and down; the limiting plate is used for limiting the upward moving height of the magnetic sealing sheet, and the magnetic sealing sheet is prevented from being separated from the fixing rod and losing the function of resetting and insulating air to extinguish fire.
In embodiments 1-3, the fixing rods are symmetrically disposed on the bottom plate of the top cover of the battery and around the safety valve, so that the stress balance of the magnetic sealing sheet can be effectively ensured, and the magnetic sealing sheet is prevented from being stuck on the fixing rods due to uneven stress, preferably, the number of the fixing rods is 4 or 6. In embodiments 2 and 3, the diameter of the cylindrical rod is smaller than that of the through hole in the magnetic sealing sheet, so that the magnetic sealing sheet can be effectively ensured to move up and down on the fixing rod; the length of the limiting rod and the maximum overall dimension of the limiting plate are both larger than the diameter of the through hole in the magnetic sealing sheet, and the limiting rod and the limiting plate are used for guaranteeing the effectiveness of limiting the magnetic sealing sheet.
In the fire extinguishing apparatus of embodiments 1 to 3, when the battery is in a normal use condition, the magnetic sealing sheet is attracted by the magnetic force of the magnetic member and is covered above the safety valve in a sealing manner, so that the safety valve can be effectively protected and prevented from being damaged by external force; at this time, the magnetic sealing sheet is only contacted with the safety valve in a tangent way, so the normal use of the battery and the function of the safety valve are not influenced.
When the battery is abnormal, the pressure in the battery is continuously increased, when the pressure reaches an explosion-proof critical value, the safety valve is opened to release the pressure in the battery, the impact force of the pressure release in the battery is greater than the magnetic attraction force between the magnetic sealing sheet and the magnetic part, and the magnetic sealing sheet moves to the upper part of the safety valve along the fixing rod in the embodiment 1 and the cylindrical rods in the embodiments 2 and 3 to release the pressure in the battery in advance; along with the gradual pressure relief of the inside of the battery, the impact force applied to the magnetic sealing sheet in the battery is also gradually reduced, but the inside of the battery is burnt in case of fire, and when the impact force applied to the magnetic sealing sheet in the battery is smaller than the magnetic attraction force between the magnetic sealing sheet and the magnetic part, the magnetic sealing sheet moves downwards along the fixing rod in the embodiment 1 and the cylindrical rods in the embodiments 2 and 3 under the action of the magnetic force to seal the safety valve port. At the moment, the inside of the battery is isolated from the outside air, so that the combustible substances in the battery can be effectively prevented from burning, and the fire extinguishing effect is achieved.
The square battery with the fire extinguishing device in the implementation comprises a shell, a battery core and a battery top cover with the fire extinguishing device as shown in the embodiments 1-3; the electric core is arranged inside the shell, and the battery top cover with the fire extinguishing device is arranged on the shell to form a complete square battery with good fire extinguishing performance and high safety performance.
According to the scheme of the above-mentioned embodiment, the utility model provides a take extinguishing device's battery top cap can appear unusually at the battery, effectual isolated air after the relief valve pressure release is accomplished prevents that the inside combustible substance of battery from continuing the burning to reach the purpose of putting out a fire. The utility model also provides a square battery of taking extinguishing device utilizes the battery top cap of taking extinguishing device to replace the battery top cap among the prior art and assembles into square battery, has good fire extinguishing performance and high security performance.
It should be finally noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced with equivalents, and these modifications or equivalent replacements cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a take extinguishing device's battery top cap, includes battery top cap bottom plate and locates positive post, negative pole post and relief valve on the battery top cap bottom plate, its characterized in that: a fire extinguishing device is also arranged on the bottom plate of the battery top cover;
the fire extinguishing device comprises a fixed rod fixedly arranged on the bottom plate of the battery top cover and around the safety valve, a magnetic sealing sheet arranged on the fixed rod and hermetically covered above the safety valve, and a magnetic part embedded on the bottom plate of the battery top cover and arranged at the bottom of the magnetic sealing sheet.
2. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the positive pole column and the negative pole column are arranged at two ends of the bottom plate of the battery top cover, and the safety valve is arranged in the middle of the bottom plate of the battery top cover.
3. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the magnetic sealing sheet is a nickel metal sheet or a cobalt metal sheet, and a through hole matched with the fixing rod is formed in the magnetic sealing sheet.
4. A battery top cover with fire extinguishing apparatus according to claim 3, wherein: the fixing rod is a conical rod structure with the diameter gradually increasing from bottom to top, the diameter of the middle lower portion of the conical rod structure is smaller than that of the through hole, and the diameter of the top portion of the conical rod structure is larger than that of the through hole.
5. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the fixing rod is of a T-shaped rod structure and comprises a cylindrical rod fixedly arranged on the bottom plate of the battery top cover and a limiting rod fixedly arranged at the top of the cylindrical rod.
6. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the fixing rod is of a column structure and comprises a cylindrical rod fixedly arranged on the bottom plate of the battery top cover and a limiting plate fixedly arranged at the top of the cylindrical rod.
7. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the diameter of the cylindrical rod of claim 5 or 6 is smaller than that of the through hole of claim 3, and the length of the limiting rod of claim 5 and the maximum external dimension of the limiting plate of claim 6 are larger than those of the through hole of claim 3.
8. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the fixed rods are symmetrically arranged on the bottom plate of the battery top cover and around the safety valve, and the number of the fixed rods is 4 or 6.
9. The battery top cover with fire extinguishing apparatus according to claim 1, wherein: the magnetic parts are symmetrically arranged around the safety valve and are of magnetic sheets, magnetic blocks or magnetic strip structures.
10. The utility model provides a square battery of taking extinguishing device which characterized in that: comprising a housing, a cell and a battery top cover with a fire extinguishing device according to any of claims 1-9;
the battery core is arranged inside the shell, and the battery top cover with the fire extinguishing device is arranged on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020005055.2U CN211045491U (en) | 2020-01-03 | 2020-01-03 | Battery top cover with fire extinguishing device and square battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020005055.2U CN211045491U (en) | 2020-01-03 | 2020-01-03 | Battery top cover with fire extinguishing device and square battery |
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| Publication Number | Publication Date |
|---|---|
| CN211045491U true CN211045491U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020005055.2U Active CN211045491U (en) | 2020-01-03 | 2020-01-03 | Battery top cover with fire extinguishing device and square battery |
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| Country | Link |
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| CN (1) | CN211045491U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782881A (en) * | 2021-09-15 | 2021-12-10 | 安徽庐江凯胜新能源科技有限公司 | Battery cover plate structure for realizing multiple open circuit protection and pressure release |
| CN115036643A (en) * | 2022-08-12 | 2022-09-09 | 江苏时代新能源科技有限公司 | Battery monomer, battery and consumer |
-
2020
- 2020-01-03 CN CN202020005055.2U patent/CN211045491U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782881A (en) * | 2021-09-15 | 2021-12-10 | 安徽庐江凯胜新能源科技有限公司 | Battery cover plate structure for realizing multiple open circuit protection and pressure release |
| CN113782881B (en) * | 2021-09-15 | 2023-09-05 | 安徽庐江凯胜新能源科技有限公司 | Battery cover plate structure for realizing multiple circuit breaking protection and pressure release |
| CN115036643A (en) * | 2022-08-12 | 2022-09-09 | 江苏时代新能源科技有限公司 | Battery monomer, battery and consumer |
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