CN112615104B - Battery box pressure relief device - Google Patents
Battery box pressure relief device Download PDFInfo
- Publication number
- CN112615104B CN112615104B CN202011510944.5A CN202011510944A CN112615104B CN 112615104 B CN112615104 B CN 112615104B CN 202011510944 A CN202011510944 A CN 202011510944A CN 112615104 B CN112615104 B CN 112615104B
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- China
- Prior art keywords
- pressure relief
- battery box
- cover
- elastic
- fixing frame
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
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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 belongs to the technical field of battery environment tests, and particularly relates to a battery box pressure relief device which comprises a fixing frame, a sealing assembly, a pressure relief assembly and a protective cover. The fixing frame is fixed on the battery box and is provided with a pressure relief hole which is communicated with the battery box; one surface of the sealing component is abutted against the fixing frame and covers the pressure relief hole; the pressure relief assembly comprises a pressure relief cover and a plurality of elastic pressure relief pieces, one end of each elastic pressure relief piece is connected with the pressure relief cover, the other end of each elastic pressure relief piece is connected with the fixing frame, and the elastic pressure relief pieces are configured to enable the pressure relief cover to abut against the fixing frame through elastic pretightening force; the other surface of the sealing component is abutted against the pressure relief cover; the protection casing fixed connection mount, the protection casing is inside to have the protection chamber, and the pressure release subassembly is located the protection intracavity. According to the battery box pressure relief device, the pressure relief pressure is accurately controlled through the pre-tightening force of the elastic pressure relief piece, the pressure relief holes are uniformly stressed, the structure is simple, and the cost is low; the pressure relief assembly is located the protection casing, and the security is high, and the pressure relief process can not cause the injury to surrounding environment and operating personnel.
Description
Technical Field
The invention relates to the technical field of battery environment tests, in particular to a battery box pressure relief device.
Background
The battery environment test needs to be carried out in a battery box, and the conditions of battery damage, leakage, expansion, fire, explosion and the like can occur in the test process; when the circumstances above taking place, can lead to the pressure increase in the battery box of battery environment, produce the danger of battery box explosion, can lead to bodily injury and loss of property even, consequently, need in time carry out the pressure release to the battery box. The common battery box pressure relief device generally adopts a torsion spring to overturn, seal and relieve pressure or adopts an electric device to relieve pressure, so that the operation is inconvenient, the stress of a pressure relief hole is uneven, the pressure relief pressure is not easy to control, the pressure relief operation can not be carried out in time or can not be carried out before the pressure relief pressure appears, and the effect of effectively protecting the battery box can not be achieved; in addition, the common pressure relief device in the market is easy to impact externally in the pressure relief process, so that the surrounding environment and operators are injured, and the safety is low; in addition, the electric pressure relief device has a complex structure and high cost, and once the electric pressure relief device is damaged after pressure relief, the cost is high.
Disclosure of Invention
The invention aims to provide a battery box pressure relief device which can accurately control pressure relief pressure, has uniform stress of a pressure relief hole, simple structure and low cost; the safety is high, and the pressure relief process can not cause influence and injury to the surrounding environment and operating personnel.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery case pressure relief device comprising:
the fixing frame is used for being fixed on the battery box and provided with a pressure relief hole, and the pressure relief hole can be communicated with the battery box;
one surface of the sealing component can abut against the fixing frame and cover the pressure relief hole;
the pressure relief assembly comprises a pressure relief cover and a plurality of elastic pressure relief pieces, one ends of the elastic pressure relief pieces are connected with the pressure relief cover, the other ends of the elastic pressure relief pieces are connected with the fixing frame, and the elastic pressure relief pieces are configured to enable the pressure relief cover to be abutted against the fixing frame through elastic pre-tightening force; the other surface of the sealing component is connected with the pressure relief cover; and
the protection casing, protection casing fixed connection the mount, the protection casing is inside to have the protection chamber, the pressure release subassembly is located the protection intracavity.
As a preferred structure of the invention, the pressure relief cover comprises two connecting plates, and the two connecting plates are respectively fixed on two opposite sides of the pressure relief cover; the connecting plate is provided with at least two first connecting holes, and each connecting plate is provided with the same number of first connecting holes; the first connection hole is configured to connect one end of the elastic press.
As a preferable structure of the present invention, a side of the fixing frame is provided with a second connection hole corresponding to the first connection hole, the second connection hole being configured to connect the other end of the elastic pressure relief member.
As a preferred structure of the present invention, the elastic pressure relief member is an extension spring, one end of the extension spring is detachably connected to the first connection hole, and the other end of the extension spring is detachably connected to the second connection hole; the extension springs are symmetrically distributed on two opposite sides of the pressure relief cover.
As a preferable structure of the invention, the sealing assembly comprises a sealing plate and a heat insulation plate, and the sealing plate and the heat insulation plate are integrally attached; the outer surface of the sealing plate is abutted to the fixing frame, and the outer surface of the heat insulation plate is connected with the pressure relief cover.
As a preferable structure of the present invention, the pressure relief cover further includes an installation plate, the installation plate is disposed in the pressure relief cover, and the heat insulation plate is fixedly connected to the installation plate.
As a preferable structure of the present invention, the mounting plate is provided with heat dissipation holes.
As a preferable structure of the present invention, the protective cover is provided with a first vent hole, and the first vent hole is located on a side wall of the protective cover; the fixing frame is provided with a second vent hole, the second vent hole is located on the side wall of the fixing frame, and the first vent hole and the second vent hole are arranged oppositely.
As a preferable structure of the present invention, the fixing frame further includes a support plate disposed inside the fixing frame, the support plate being configured to support the pressure relief cover.
As a preferred configuration of the present invention, the protection cover is provided with a through-going observation hole.
The invention has the beneficial effects that: according to the battery box pressure relief device provided by the invention, the plurality of elastic pressure relief pieces are used for connecting the pressure relief cover and the fixing frame, and the pressure relief cover is tightly abutted against the fixing frame through the elastic pre-tightening force, so that the pressure relief pressure of the device can be accurately controlled, the pressure relief holes are uniformly stressed, and the pressure relief is timely; the pressure relief cover is arranged in the protective cover, and the pressure relief cover and the sealing assembly which are bounced open during pressure relief are always positioned in the protective cover, so that the influence and impact injury to the surrounding environment and operators can be avoided; the pressure relief device adopts a mechanical pressure relief mode, and has the advantages of simple structure, convenience in installation, low cost and reliability in pressure relief.
Drawings
Fig. 1 is an exploded schematic view of a battery box pressure relief device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery box pressure relief device according to an embodiment of the present invention.
In the figure:
1. a fixed mount; 11. a pressure relief vent; 12. a second connection hole; 13. a second vent hole; 14. a support plate;
2. a seal assembly; 21. a sealing plate; 22. a heat insulation plate;
3. a pressure relief assembly; 31. a pressure relief cover; 311. a connecting plate; 312. a first connection hole; 313. mounting a plate; 314. heat dissipation holes; 32. an elastic pressure relief member;
4. a protective cover; 41. a first vent hole; 42. and (6) observing holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
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, removably 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. 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.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1-2, an embodiment of the present invention provides a battery box pressure relief device, which includes a fixing frame 1, a sealing assembly 2, a pressure relief assembly 3, and a protective cover 4. The fixing frame 1 is used for being fixed on the battery box, the fixing frame 1 is provided with a pressure relief hole 11, and the pressure relief hole 11 is communicated with the battery box. One surface of the sealing component 2 can abut against the fixed frame 1 and cover the pressure relief hole 11. The pressure relief assembly 3 comprises a pressure relief cover 31 and a plurality of elastic pressure relief pieces 32, one end of each elastic pressure relief piece 32 is connected with the pressure relief cover 31, the other end of each elastic pressure relief piece 32 is connected with the fixing frame 1, and the elastic pressure relief pieces 32 are configured to enable the pressure relief cover 31 to be abutted against the fixing frame 1 through elastic pre-tightening force; the other side of seal assembly 2 butts pressure relief cover 31, and seal assembly 2 prevents that the battery box from taking place gas leakage in the normal course of working. The protection casing 4 fixed connection mount 1, the protection casing 4 is inside to have the protection chamber, and pressure release subassembly 3 is located the protection intracavity. The pressure relief pressure of the device can be accurately controlled through the elastic pretightening force of the elastic pressure relief piece 32, and the uniform stress of the pressure relief holes 11 is ensured; the critical pressure of the pressure relief device is slightly higher than the internal pressure of the battery box during normal operation, so that the sealing of the battery box can be ensured, and the pressure can be relieved in time under an abnormal state. The critical pressure of the pressure relief device is determined by the maximum load of the elastic pressure relief member 32. When the internal pressure of the battery box is greater than the critical pressure of the pressure relief device, the pressure is transmitted to the pressure relief cover 31 through the sealing component 2 covering the pressure relief hole 11, so that the elastic pressure relief piece 32 loses elasticity, at the moment, the pressure relief cover 31 and the sealing component 2 are bounced open, and the internal pressure of the battery box is released through the pressure relief hole 11; meanwhile, due to the existence of the protective cover 4, the bounced pressure relief cover 31 and the sealing component 2 are always positioned in the protective cover 4, and influence and impact injury to the surrounding environment and operators can not be caused. The pressure relief device is used for relieving pressure in a mechanical mode, and has the advantages of simple structure, convenience in installation, low cost and reliability in pressure relief. Preferably, the reinforcing plate with the thickness of 3mm is welded inside the connecting port of the battery box, the pressure relief device, the battery box and the reinforcing plate are fixedly connected through screws, the installation reliability of the pressure relief device is improved, and the pressure relief device is prevented from being popped due to overlarge instantaneous pressure when the battery box explodes and fires.
Further, the pressure relief cover 31 includes two connection plates 311, and the two connection plates 311 are fixed on two opposite sides of the pressure relief cover 31; the connection plate 311 is provided with at least two first connection holes 312, and each connection plate 311 is provided with the same number of first connection holes 312. In the present embodiment, each connection plate 311 is provided with two first connection holes 312, each of the two first connection holes 312 being located at one end of the connection plate 311; the first connection hole 312 is configured to connect one end of the elastic press 32. The side of the fixing frame 1 has a second coupling hole 12, and the second coupling hole 12 is configured to couple the other end of the elastic pressure relief member 32. Preferably, the connection plate 311 has an L-shaped cross-section, wherein one side is fixedly connected to the pressure relief cover 31, and the other side is provided with a first connection hole 312.
Further, the elastic pressure relief member 32 is an extension spring, one end of which is detachably connected to the first connection hole 312, and the other end of which is detachably connected to the second connection hole 12. The tension springs are symmetrically distributed on opposite sides of the pressure relief cover 31. In this embodiment, the number of the tension springs is four, and the four tension springs are symmetrically distributed on two sides of the pressure relief cover 31 and respectively connect with the four first connection holes 312 of the two connection plates 311. When the battery box works normally, the pressure relief cover 31 is tightly pressed against the fixing frame 1 through the initial tension of the extension spring, and the pressure relief hole 11 is sealed to prevent the battery box from leaking air; by setting the maximum load which can be borne by the extension spring, the pressure relief pressure of the pressure relief device is accurately controlled, and timely pressure relief is guaranteed.
Further, the sealing assembly 2 comprises a sealing plate 21 and a heat insulation plate 22, wherein the sealing plate 21 and the heat insulation plate 22 are arranged in parallel; the outer surface of the sealing plate 21 is in contact with the fixed frame 1, and the outer surface of the heat insulation plate 22 is connected with the pressure relief cover 31. Preferably, the sealing plate 21 is a high-temperature-resistant, high-humidity-resistant and corrosion-resistant silica gel foaming plate, so that the sealing plate has good sealing performance, and the air leakage generated in the normal use process of the battery box is prevented from influencing the test effect; the heat insulation board 22 is an insulation heat insulation board with flame resistance grade FR4, still has higher mechanical strength at 150 ℃, can avoid heat conduction of gas in the battery box, and prevents the temperature in the battery box from being correlated with the ambient temperature to cause the pressure relief device to generate condensation, thereby influencing the use experience of customers.
Further, the pressure relief cover 31 further comprises a mounting plate 313, the mounting plate 313 is arranged in the pressure relief cover 31, and the heat insulation plate 22 is fixedly connected with the mounting plate 313. In this embodiment, the pressure relief cover 31 has two mounting plates 313, and the two mounting plates 313 are vertically arranged on two side walls of the pressure relief cover 31, and together provide a support plane for the sealing component 2, so that the sealing component 2 is well attached to the pressure relief hole 11, and effective sealing can be formed.
Further, the mounting plate 313 is provided with heat radiating holes 314, and the heat radiating holes 314 are configured to reduce heat conduction of the heat insulating plate 22 to the pressure relief cover 31. In the present embodiment, the heat dissipation holes 314 are uniformly spaced and circular and are uniformly distributed on the mounting plate 313. The existence of the heat dissipation holes 314 can reduce the contact area between the sealing component 2 and the pressure relief cover 31, reduce the heat conduction in the battery box and avoid the generation of excessive condensed water by the pressure relief device. In other embodiments, the heat dissipation holes 314 may be square, triangular, etc., but not limited to this embodiment, so as to achieve the effect of reducing heat conduction.
Further, the protective cover 4 is provided with a first vent hole 41, and the first vent hole 41 is located on the side wall of the protective cover 4; the fixing frame 1 is provided with a second vent hole 13, the second vent hole 13 is positioned on the side wall of the fixing frame 1, and the first vent hole 41 and the second vent hole 13 are arranged oppositely. After the pressure relief device relieves the pressure, a large amount of derived gas in the battery box enters the protective cover 4 through the pressure relief hole 11, and the derived gas can be effectively discharged through the first vent hole 41 and the second vent hole 13.
Further, the fixing frame 1 further includes a support plate 14, the support plate 14 is disposed in the fixing frame 1, and the support plate 14 is configured to support the pressure relief cover 31. In this embodiment, the supporting plate 14 has an L-shaped supporting surface for abutting against the side wall of the pressure relief cover 31 to support the pressure relief cover 31, so as to prevent the self-gravity of the pressure relief cover 31 from loading the elastic pressure relief member 32, thereby preventing the pressure relief action from being affected timely and reliably.
Further, the protection cover 4 is provided with a through observation hole 42, and the inside of the protection cover 4 is observable through the observation hole 42. In this embodiment, observe the hole 42 and set up in the bottom of protection casing 4, observe the hole 42 and be the circular port, be convenient for operating personnel through this hole observe in to protection casing 4, know pressure relief device's operating condition. In other embodiments, the observation hole 42 may be square, triangular, or the like, and may be disposed at another position on the protection cover 4 where the observation is easy to observe, which is not limited to this embodiment.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. 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 (9)
1. The utility model provides a battery box pressure relief device which characterized in that includes:
the fixing frame (1) is used for being fixed on a battery box, the fixing frame (1) is provided with a pressure relief hole (11), the pressure relief hole (11) can be communicated with the battery box, the fixing frame (1) is provided with a second vent hole (13), and the second vent hole (13) is located on the side wall of the fixing frame (1);
the sealing assembly (2), one side of the sealing assembly (2) can be abutted against the fixed frame (1), and covers the pressure relief hole (11);
the pressure relief assembly (3) comprises a pressure relief cover (31) and a plurality of elastic pressure relief pieces (32), one end of each elastic pressure relief piece (32) is connected with the pressure relief cover (31), the other end of each elastic pressure relief piece is connected with the fixing frame (1), and the elastic pressure relief pieces (32) are configured to enable the pressure relief covers (31) to be pressed against the fixing frames (1) through elastic pre-tightening force; the other surface of the sealing component (2) is connected with the pressure relief cover (31); and
protection casing (4), protection casing (4) fixed connection mount (1), protection casing (4) inside has the protection chamber, pressure release subassembly (3) are located the protection intracavity, protection casing (4) are provided with first air vent (41), first air vent (41) are located the lateral wall of protection casing (4), first air vent (41) with second air vent (13) are just to setting up.
2. The battery box pressure relief device according to claim 1, wherein said pressure relief cover (31) comprises two connecting plates (311), said two connecting plates (311) being fixed to opposite sides of said pressure relief cover (31), respectively; the connecting plate (311) is provided with at least two first connecting holes (312), and each connecting plate (311) is provided with the same number of first connecting holes (312); the first connection hole (312) is configured to connect one end of the elastic press piece (32).
3. The battery box pressure relief device according to claim 2, wherein a side of the fixing frame (1) is provided with a second connection hole (12) corresponding to the first connection hole (312), the second connection hole (12) being configured to connect the other end of the elastic pressure relief member (32).
4. The battery box pressure relief device according to claim 3, wherein said elastic pressure relief member (32) is an extension spring having one end detachably connected to said first connection hole (312) and the other end detachably connected to said second connection hole (12); the extension springs are symmetrically distributed on two opposite sides of the pressure relief cover (31).
5. The battery box pressure relief device according to claim 1, wherein the sealing assembly (2) comprises a sealing plate (21) and a heat insulation plate (22), and the sealing plate (21) and the heat insulation plate (22) are attached to form a whole; the outer surface of the sealing plate (21) is abutted to the fixed frame (1), and the outer surface of the heat insulation plate (22) is connected with the pressure relief cover (31).
6. The battery box pressure relief device according to claim 5, wherein said pressure relief cover (31) further comprises a mounting plate (313), said mounting plate (313) being disposed within said pressure relief cover (31), said heat shield (22) being fixedly attached to said mounting plate (313).
7. The battery box pressure relief device according to claim 6, wherein said mounting plate (313) is provided with heat dissipation vents (314).
8. The battery box pressure relief device according to any of claims 1-7, wherein the fixture (1) further comprises a support plate (14), the support plate (14) being disposed within the fixture (1), the support plate (14) being configured to support the pressure relief cover (31).
9. The battery compartment pressure relief device according to any of claims 1-7, wherein the protective cover (4) is provided with a through viewing aperture (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510944.5A CN112615104B (en) | 2020-12-18 | 2020-12-18 | Battery box pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011510944.5A CN112615104B (en) | 2020-12-18 | 2020-12-18 | Battery box pressure relief device |
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| Publication Number | Publication Date |
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| CN112615104A CN112615104A (en) | 2021-04-06 |
| CN112615104B true CN112615104B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011510944.5A Active CN112615104B (en) | 2020-12-18 | 2020-12-18 | Battery box pressure relief device |
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| CN (1) | CN112615104B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217182357U (en) * | 2022-03-22 | 2022-08-12 | 宁德时代新能源科技股份有限公司 | Directional pressure relief structure, battery box, battery and power consumption device |
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| US20120251872A1 (en) * | 2011-04-04 | 2012-10-04 | Dukjung Kim | Battery pack |
| JP2019102193A (en) * | 2017-11-29 | 2019-06-24 | トヨタ自動車株式会社 | Battery with relief valve |
| CN112086710A (en) * | 2020-09-08 | 2020-12-15 | 湖州快驴科技有限公司 | Lithium battery with explosion-proof function |
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| JP2013114792A (en) * | 2011-11-25 | 2013-06-10 | Sumitomo Electric Ind Ltd | Safety valve, and molten salt electrolyte battery equipped with safety valve and manufacturing method thereof |
| US10727462B2 (en) * | 2016-09-28 | 2020-07-28 | KULR Technology Corporation | Thermal runaway shield |
| EP3859873A1 (en) * | 2016-10-04 | 2021-08-04 | Kabushiki Kaisha Toshiba | Pressure relief case |
| CN110098354A (en) * | 2018-01-31 | 2019-08-06 | 江苏常宁电子有限公司 | A kind of novel battery safety anti-explosive case |
| CN111584978A (en) * | 2020-06-22 | 2020-08-25 | 昆山宝创新能源科技有限公司 | Battery module |
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2020
- 2020-12-18 CN CN202011510944.5A patent/CN112615104B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120251872A1 (en) * | 2011-04-04 | 2012-10-04 | Dukjung Kim | Battery pack |
| JP2019102193A (en) * | 2017-11-29 | 2019-06-24 | トヨタ自動車株式会社 | Battery with relief valve |
| CN112086710A (en) * | 2020-09-08 | 2020-12-15 | 湖州快驴科技有限公司 | Lithium battery with explosion-proof function |
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| CN112615104A (en) | 2021-04-06 |
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Address after: 215300 plants A6, a7, a8 and B10, No. 8, Huacheng Road, Lujia Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Jiangsu Tuomiluo High-end Equipment Co.,Ltd. Address before: 215000 room 7, No.427 Sanxiang Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: JIANGSU TOLIMO ENVIRONMENT TESTING EQUIPMENT Co.,Ltd. |