CN112787029B - Battery system for vehicle and vehicle - Google Patents
Battery system for vehicle and vehicle Download PDFInfo
- Publication number
- CN112787029B CN112787029B CN201911061917.1A CN201911061917A CN112787029B CN 112787029 B CN112787029 B CN 112787029B CN 201911061917 A CN201911061917 A CN 201911061917A CN 112787029 B CN112787029 B CN 112787029B
- Authority
- CN
- China
- Prior art keywords
- detection circuit
- battery system
- battery module
- vent valve
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 239000012528 membrane Substances 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- 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
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
A battery system for a vehicle and a vehicle are provided. The battery system comprises a shell, a battery module, a vent valve, a detection circuit and a control device. The battery module is arranged in the inner cavity of the shell. The vent valve is configured to discharge gas generated in the battery module. The detection circuit is arranged on the vent valve. The detection circuit has a signal output terminal and is configured to be capable of being broken by being damaged by gas generated in the battery module when thermal runaway occurs in the battery module and the signal output terminal outputs a circuit breaking signal when the detection circuit is broken. The control device is connected to the signal output and configured to send an alarm signal to a user of the vehicle upon receipt of the circuit breaking signal. According to the scheme of the invention, the signal output end of the detection circuit can timely output the circuit disconnection signal, so that the control device can timely send the alarm signal, and the response time is shortened. In addition, the detection circuit is arranged on the ventilation valve, so that the existing components can be used, and the manufacturing cost is reduced.
Description
Technical Field
The present invention relates to the field of vehicle technology, and more particularly, to a battery system for a vehicle and a vehicle having the same.
Background
With the development of vehicle technology, the requirements for the safety performance of the battery of the vehicle are also increasing. When abnormal thermal runaway occurs in the battery system, a large amount of high-temperature and high-pressure gas is generated. According to the latest national standard requirements to be published, the battery system should provide an alarm signal five minutes before thermal diffusion due to thermal runaway of the individual cells, and thus danger in the passenger compartment, to alert passengers in the vehicle to evacuate as soon as possible.
Known battery systems generally employ a voltage sensor or a temperature sensor to detect whether abnormal thermal runaway occurs in the battery system. However, the battery system needs relatively long response time to be detected by using the voltage sensor or the temperature sensor, and the requirements of a new national standard cannot be met.
Accordingly, there is a need to provide a battery system for a vehicle and a vehicle having the same to at least partially solve the problems existing in the prior art.
Disclosure of Invention
To solve the above technical problems, according to an aspect of the present invention, there is provided a battery system for a vehicle. The battery system includes:
a housing having an interior cavity;
the battery module is arranged in the inner cavity;
a vent valve configured to vent gas generated in the battery module;
a detection circuit disposed on the vent valve, the detection circuit having a signal output terminal configured to be capable of being broken by a gas generated in the battery module when thermal runaway occurs in the battery module and the signal output terminal outputting a circuit breaking signal when the detection circuit is broken; and
a control device connected to the signal output and configured to send an alarm signal to a user of the vehicle upon receipt of the circuit break signal.
Preferably, the vent valve comprises a valve seat and a diaphragm disposed on the valve seat, the detection circuit being disposed on the diaphragm.
Preferably, the membrane is provided with frangible regions.
Preferably, the melting point of the material of the frangible region is less than the melting point of the material of the other regions of the membrane.
Preferably, the thickness of the frangible region is less than the thickness of the other regions of the membrane.
Preferably, the detection circuit is arranged on the membrane by electronic printing.
Preferably, the detection circuit is configured to break when the temperature of the gas is greater than or equal to a predetermined temperature threshold.
Preferably, the detection circuit is configured to break when the pressure of the gas is greater than or equal to a predetermined pressure threshold.
Preferably, the battery system further includes a cooling diverter provided at the bottom of the case for supplying the cooling medium to the battery module, and the vent valve is provided on the cooling diverter.
According to another aspect of the present invention, a vehicle is provided. The vehicle includes any of the battery systems described above.
According to the scheme of the invention, when thermal runaway occurs in the battery module of the battery system, a large amount of high-temperature high-pressure gas generated in the battery module flows towards the vent valve at a high flow rate, so that the detection circuit arranged in the vent valve is damaged and disconnected, the signal output end of the detection circuit can timely output a circuit disconnection signal, and further the control device can timely send an alarm signal to a user of the vehicle, the response time is shortened, and the safety performance is improved. In addition, the detection circuit is arranged on the vent valve, so that the existing components of the battery system in the prior art can be used, new components are not required to be additionally added, and the manufacturing cost can be reduced.
Drawings
Non-limiting and non-exhaustive embodiments of the present invention are described by way of example with reference to the following drawings, wherein:
fig. 1 is an exploded perspective view of a battery system according to a preferred embodiment of the present invention;
fig. 2 is a bottom perspective view of the battery system shown in fig. 1;
FIG. 3 is a schematic perspective view of the cooling diverter shown in FIG. 2;
figure 4 is a schematic perspective view of the vent valve shown in figures 2 and 3; and
figure 5 is a schematic plan view of a diaphragm of a vent valve according to another embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In a first aspect of the present invention, a battery system for a vehicle is provided.
Fig. 1 to 5 schematically illustrate a battery system 100 provided by the present invention. Wherein fig. 1 is an exploded perspective view of a battery system 100 according to a preferred embodiment of the present invention; fig. 2 is a bottom perspective view of the battery system 100 shown in fig. 1; FIG. 3 is a schematic perspective view of the cooling diverter 170 shown in FIG. 2; figure 4 is a schematic perspective view of the vent valve 160 shown in figures 2 and 3; and figure 5 is a schematic plan view of a diaphragm 162 of a vent valve 160 according to another embodiment of the invention. The battery system 100 provided by the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the battery system 100 includes a case 110, a battery module 120, a vent valve 160, a detection circuit 130, and a control device (not shown).
As shown in fig. 1, the case 110 has an inner cavity (not shown) that may form an accommodating space to accommodate components of the battery module 120, etc. of the battery system 100. Specifically, in the present embodiment, the housing 110 has a substantially box-like shape. The housing 110 includes a bottom wall 111 and a side wall 112 extending upward from the periphery of the bottom wall 111. The bottom wall 111 and the side walls 112 enclose an interior cavity having a top opening. In addition, the housing 110 includes a top wall 113 that covers the top opening of the interior cavity. The bottom wall 111 and the side walls 112 may be integrally formed, and the top wall 113 is detachably connected to the side walls 112 so as to dispose the battery module 120 and the like of the battery system 100 in the inner chamber. Of course, in other embodiments of the invention not shown, the housing 110 may be any other suitable shape. The housing 110 is typically made of a rigid material.
As shown in fig. 1, at least one battery module 120 is disposed in an inner cavity of the case 110. In the present embodiment, a battery module 120 is disposed in the inner cavity of the housing 110. However, in other embodiments of the invention not shown, any other suitable number of battery modules 120, such as two, three or more, may be provided in the inner cavity of the housing 110. When a plurality of battery modules 120 are disposed in the inner cavity of the case 110, the plurality of battery modules 120 may be connected in series to be able to provide sufficient battery energy for the vehicle. Each battery module 120 includes at least one battery cell 121. Preferably, the battery module 120 may include a plurality of battery cells 121, and the plurality of battery cells 121 are connected together in series to be able to provide sufficient battery energy for the vehicle.
As shown in fig. 2 and 3, the battery system 100 includes a vent valve 160. Specifically, in the present embodiment, the battery system 100 includes two vent valves 160. It will be appreciated that the battery system 100 may also include any other suitable number of vent valves 160, as desired. The vent valve 160 is configured to discharge gas generated in the battery module 120. In particular, the vent valve 160 is operable in an open position or a closed position. When the vent valve 160 is in the open position, the vent valve 160 communicates the inner cavity of the case 110 with the outside of the case 110 to discharge the gas generated in the battery module 120 in the inner cavity of the case 110.
The vent valve 160 may be disposed at any suitable location on the housing 110. For example, the vent valve 160 may be disposed directly on the bottom wall 111 of the housing 110. In a preferred embodiment of the present invention, a cooling diverter 170 is attached to the bottom of the housing 110. The cooling flow splitter 170 is provided with a cooling medium inlet and a cooling medium outlet for supplying a cooling medium (e.g., cooling water) to the battery module 120. The cooling diverter 170 may be made of a plastic material. The vent valve 160 is provided on the cooling diverter 170 to avoid providing through holes in other portions of the housing 110.
As shown in fig. 4, the detection circuit 130 is disposed on the vent valve 160. Specifically, in a preferred embodiment of the present invention, the vent valve 160 includes a valve seat 161 and a diaphragm 162 disposed on the valve seat 161. The detection circuit 130 is disposed on a diaphragm 162 of the vent valve 160. Specifically, the detection circuit 130 is disposed on the side of the diaphragm 162 facing the inside of the case 110, that is, facing the high-temperature and high-pressure gas generated in the battery module 120 at the time of thermal runaway of the battery cells 121. Alternatively, the detection circuit 130 may be printed on the diaphragm 162 of the vent valve 160 by electronic printing.
The detection circuit 130 has a signal output 133. The detection circuit 130 is configured to be capable of being broken by being damaged by gas generated in the battery module 120 when thermal runaway occurs in the battery module 120 and the signal output terminal 133 of the detection circuit 130 outputs a circuit breaking signal when the detection circuit 130 is broken. It should be noted that "damage" as used herein refers to irreversible damage or unrecoverable damage. When thermal runaway (e.g., fire) occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. These high temperature and high pressure gases may flow at a relatively high flow rate toward the vent valve 160. In this process, a high-temperature and high-pressure gas of a high flow rate acts on the detection circuit 130 disposed on the vent valve 160 and causes the detection circuit 130 to be broken to be opened.
For example, in one embodiment of the present invention, when the temperature of the gas generated in the battery module 120 is greater than or equal to a predetermined temperature threshold, the gas can cause the wires of the detection circuit 130 to be fused, thereby damaging the detection circuit 130. For another example, in another embodiment of the present invention, when the pressure of the gas generated in the battery module 120 is greater than or equal to a predetermined pressure threshold value, the gas can apply a certain force (e.g., impact force, etc.) to the wires of the detection circuit 130, so that the wires of the detection circuit 130 are broken by an external force, thereby damaging the detection circuit 130. As another example, in still another embodiment of the present invention, when the gas generated in the battery module 120 first causes breakage of a portion of the membrane 162 of the vent valve 160, the breakage region can apply a certain tearing force to the wire of the detection circuit 130, so that the wire of the detection circuit 130 is broken, thereby damaging the detection circuit 130, which will be described in detail below. Either of these causes the detection circuit 130 to open.
The control device is connected to the signal output 133 of the detection circuit 130. When the detection circuit 130 is broken by the gas generated in the battery module 120, the signal output terminal 133 of the detection circuit 130 transmits a circuit breaking signal to the control device. The control device is configured to send an alarm signal to a user of the vehicle (e.g., a driver or passenger of the vehicle) upon receipt of the circuit breaking signal to alert the user of the vehicle to evacuate as soon as possible, avoiding the occurrence of a hazard. The alarm signal may be an audible cue signal and/or a visual cue signal.
Preferably, as shown in FIG. 4, the membrane 162 is provided with frangible regions 163. The detection circuit 130 may be disposed on the frangible region 163 or may be disposed around the frangible region 163. Specifically, in a preferred embodiment of the present invention, the thickness of the frangible region 163 of the membrane 162 is less than the thickness of the other regions of the membrane 162. For example, a central region of the diaphragm 162 may be pre-etched with a "cross-shaped" pattern having a thickness that is less than the thickness of other regions of the diaphragm 162. When thermal runaway occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. These high temperature and high pressure gases may flow at a relatively high flow rate toward the vent valve 160. The breakable area 163 on the membrane 162 of the vent valve 160 is broken first because of its smaller thickness than other areas, thereby tearing the detection circuit 130 disposed on the breakable area 163 or tearing other areas around the breakable area 163, and thus tearing the detection circuit 130 disposed in other areas around the breakable area 163. In either case, the detection circuit 130 is caused to tear and fail more quickly.
In other embodiments of the present invention, the melting point of the material of the frangible region 163 of the membrane 162 is less than the melting point of the material of the other regions of the membrane 162. When thermal runaway occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. These high temperature and high pressure gases may flow at a relatively high flow rate toward the vent valve 160. The breakable area 163 on the membrane 162 of the vent valve 160 is broken first because the melting point is smaller than other areas, so that the detection circuit 130 disposed on the breakable area 163 or other areas around the breakable area 163 are torn, and the detection circuit 130 disposed other areas around the breakable area 163 is torn. In either case, the detection circuit 130 is caused to tear and fail more quickly.
In other embodiments of the present invention, a plurality of frangible regions 163 may also be provided in the membrane 162, and the plurality of frangible regions 163 may be formed in a predetermined pattern. As shown in fig. 5, three frangible regions 163 are pre-etched into the membrane 162, the thickness of the three frangible regions 163 being less than the thickness of the other regions of the membrane 162. The detection circuit 130 is disposed between the three frangible regions 163. When thermal runaway occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas is generated in the battery module 120. These high temperature and high pressure gases may flow at a relatively high flow rate toward the vent valve 160. The three frangible regions 163 on the membrane 162 of the vent valve 160 are first broken due to their smaller thickness than the other regions, thereby tearing the other regions between the frangible regions 163 and thus tearing the detection circuit 130 between the frangible regions 163, thereby allowing the detection circuit 130 to be broken more quickly.
According to the scheme of the present invention, when thermal runaway occurs in any one of the battery cells 121 in the battery module 120, a large amount of high-temperature and high-pressure gas generated in the battery module 120 may flow toward the vent valve 160 at a high flow rate, so that the detection circuit 130 disposed in the vent valve 160 is damaged to be disconnected, the signal output terminal 133 of the detection circuit 130 may timely output a circuit disconnection signal, and further the control device may timely transmit an alarm signal to a user of the vehicle, thereby shortening response time and improving safety performance. In addition, the detection circuit 130 is disposed on the vent valve 160, existing components of the related art battery system 100 can be used, and a new component is not required to be additionally added, thereby reducing manufacturing costs.
When the battery system 100 includes the plurality of vent valves 160, the detection circuit 130 may be disposed on only one of the vent valves 160, or the detection circuit 130 may be disposed on each of the plurality of vent valves 160. The signal output 133 of each detection circuit 130 may be connected in series and ultimately to the control device. The damage of any one of the detection circuits 130 can output a circuit breaking signal to the control device.
In a second aspect of the invention, a vehicle is also provided. The vehicle is provided with the battery system described above.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
While the invention has been described in conjunction with embodiments, it will be understood by those skilled in the art that the foregoing description and drawings are illustrative only and that the invention is not limited to the disclosed embodiments. Various modifications and variations are possible without departing from the spirit of the invention.
Claims (9)
1. A battery system for a vehicle, the battery system comprising:
a housing having an interior cavity;
the battery module is arranged in the inner cavity;
a vent valve configured to vent gas generated in the battery module;
a detection circuit disposed on the vent valve, the detection circuit having a signal output terminal configured to be capable of being broken by a gas generated in the battery module when thermal runaway occurs in the battery module and the signal output terminal outputting a circuit breaking signal when the detection circuit is broken; and
a control device connected to the signal output and configured to send an alarm signal to a user of the vehicle upon receipt of the circuit break signal;
wherein the vent valve comprises a valve seat and a diaphragm disposed on the valve seat, the detection circuit being arranged on a side of the diaphragm facing the interior of the housing.
2. The battery system of claim 1, wherein the membrane is provided with frangible regions.
3. The battery system of claim 2, wherein the material of the frangible region has a melting point that is less than the melting point of the material of the other regions of the membrane.
4. The battery system of claim 2, wherein the thickness of the frangible region is less than the thickness of the other regions of the membrane.
5. The battery system of claim 1, wherein the detection circuit is disposed on the membrane by electronic printing.
6. The battery system of claim 1, wherein the detection circuit is configured to break when the temperature of the gas is greater than or equal to a predetermined temperature threshold.
7. The battery system of claim 1, wherein the detection circuit is configured to break when the pressure of the gas is greater than or equal to a predetermined pressure threshold.
8. The battery system of claim 1, further comprising a cooling diverter disposed at a bottom of the housing for providing a cooling medium to the battery module, the vent valve being disposed on the cooling diverter.
9. A vehicle characterized by comprising the battery system according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061917.1A CN112787029B (en) | 2019-11-01 | 2019-11-01 | Battery system for vehicle and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061917.1A CN112787029B (en) | 2019-11-01 | 2019-11-01 | Battery system for vehicle and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112787029A CN112787029A (en) | 2021-05-11 |
| CN112787029B true CN112787029B (en) | 2024-03-22 |
Family
ID=75748812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061917.1A Active CN112787029B (en) | 2019-11-01 | 2019-11-01 | Battery system for vehicle and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112787029B (en) |
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| CN107123833A (en) * | 2016-02-25 | 2017-09-01 | 比亚迪股份有限公司 | Electrokinetic cell and its protection system and electric automobile |
| WO2018138226A1 (en) * | 2017-01-27 | 2018-08-02 | Lithium Energy and Power GmbH & Co. KG | Rupture valve and energy storage device |
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| CN209526152U (en) * | 2019-04-30 | 2019-10-22 | 宁德时代新能源科技股份有限公司 | Battery modules and battery pack |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2989837A1 (en) * | 2012-04-18 | 2013-10-25 | Accumulateurs Fixes | SYSTEM AND METHOD FOR DETECTING DEOPERCULATION FOR A SEALED ACCUMULATOR |
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2019
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|---|---|---|---|---|
| JPH10106524A (en) * | 1996-09-24 | 1998-04-24 | Fuji Elelctrochem Co Ltd | Electric parts |
| CN1313642A (en) * | 2000-03-09 | 2001-09-19 | 三洋电机株式会社 | Electric current safety valve and manufacture thereof |
| JP2002008616A (en) * | 2000-06-16 | 2002-01-11 | Mitsubishi Heavy Ind Ltd | Method for forming safety valve for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112787029A (en) | 2021-05-11 |
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