WO2022111552A1 - Module de refroidissement de batterie d'alimentation, procédé et dispositif de traitement d'emballement thermique, et support de stockage - Google Patents

Module de refroidissement de batterie d'alimentation, procédé et dispositif de traitement d'emballement thermique, et support de stockage Download PDF

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Publication number
WO2022111552A1
WO2022111552A1 PCT/CN2021/132971 CN2021132971W WO2022111552A1 WO 2022111552 A1 WO2022111552 A1 WO 2022111552A1 CN 2021132971 W CN2021132971 W CN 2021132971W WO 2022111552 A1 WO2022111552 A1 WO 2022111552A1
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WO
WIPO (PCT)
Prior art keywords
casing
battery
cooling module
batteries
power battery
Prior art date
Application number
PCT/CN2021/132971
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English (en)
Chinese (zh)
Inventor
耿宇明
孙焕丽
孙士杰
卢军
赵名翰
刘涛
Original Assignee
中国第一汽车股份有限公司
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Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2022111552A1 publication Critical patent/WO2022111552A1/fr

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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
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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

Definitions

  • the present application relates to the technical field of power batteries, for example, to a power battery cooling module, a thermal runaway processing method, equipment, and storage medium.
  • the battery tabs on the battery are usually connected to the positive and negative electrodes in the battery core. Therefore, the cooling effect of the battery and the battery tabs should be ensured as much as possible during the cooling process of the battery.
  • the battery will release a large amount of smoke that is harmful to the human body, which needs to be discharged to the outside of the vehicle in time.
  • a battery bracket is usually set in the module, a soft-pack battery is installed in the battery bracket, and a cooling air duct is formed to cool multiple batteries. It is also difficult to discharge harmful gases in time when thermal runaway occurs.
  • an embodiment of the present application discloses a power battery cooling module, including:
  • a casing an installation cavity is formed in the casing, and the top wall of the casing is provided with an air source communicating with the installation cavity; a support piece, the support piece is arranged in the installation cavity, the support piece A plurality of the support members are distributed at intervals along the length direction of the casing, and two opposite inner walls of the casing are respectively provided with one support member and the other of the plurality of support members.
  • a support there is a gap between two ends of each of the multiple supports and the inner wall of the casing; a battery, there are multiple batteries, and the cell tabs of each battery are connected to the inner wall of the casing.
  • each of the batteries is provided between two adjacent support members among the plurality of support members, and a side wall of each of the batteries and the support members are formed with a first air duct, a second air duct is formed between the inner wall of the casing and the ends of the plurality of batteries, and the battery core tabs are located in the second air duct; an exhaust assembly, the exhaust air
  • the air assembly is arranged on the bottom wall of the housing and communicates with the installation cavity, the exhaust assembly is used to communicate with the installation cavity and the interior space and the exterior space respectively, and the exhaust assembly communicates with the installation cavity.
  • the communication area between the interior space and the exhaust assembly and the exterior space is adjustable.
  • the embodiment of the present application discloses a thermal runaway processing method, the thermal runaway processing method adopts the power battery cooling module described above, and the thermal runaway processing method includes: S1, the controller monitors the casing Whether thermal runaway occurs inside; S2. In response to the controller monitoring that thermal runaway occurs inside the housing, the controller increases the intake air volume and the intake speed of the air source toward the installation cavity; S3 , the exhaust assembly closes the passage between the installation cavity and the vehicle interior space and adjusts the communication area between the installation cavity and the vehicle exterior space to the maximum.
  • an electronic device including:
  • memory arranged to store at least one program
  • the at least one processor is configured to execute the at least one program to implement the thermal runaway processing method as described above.
  • an embodiment of the present application discloses a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements the thermal runaway processing method described above.
  • FIG. 1 is a schematic structural diagram of the power battery cooling module provided by the specific embodiment of the present application after removing the exhaust component;
  • FIG. 2 is a schematic top-view structural diagram of a power battery cooling module provided by a specific embodiment of the present application
  • Fig. 3 is the partial enlarged structure schematic diagram of A place in Fig. 2;
  • FIG. 4 is a schematic structural diagram of an exhaust assembly provided by a specific embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • Exhaust assembly 61, Connecting pipe; 62, First exhaust pipe; 63, Second exhaust pipe; 64, Regulating part; 641, Driving part; 642, Valve plate;
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements.
  • connection may be a fixed connection or a detachable connection, or It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements.
  • the first feature "on” or “under” the second feature may include direct contact between the first and second features, or may include the first and second features.
  • the two features are not in direct contact but through another feature between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • FIG. 1 discloses a power battery cooling module, which includes a casing 1 , a support 2 , a battery 3 and an exhaust assembly 6 .
  • An installation cavity is formed in the housing 1 , and a gas source communicated with the installation cavity is provided on the top wall of the housing 1 .
  • the supporting member 2 is arranged in the installation cavity, and there are multiple supporting members 2.
  • the plurality of supporting members 2 are distributed at intervals along the length direction L of the casing 1.
  • a supporting member 2 is respectively provided on the two opposite inner walls of the casing 1. , there is a gap between the two ends of the support member 2 and the inner wall of the housing 1 .
  • each battery 3 is connected to the inner wall of the casing 1 , each battery 3 is arranged between two adjacent supporting members 2 , and the side wall of each battery 3 is connected to the inner wall of the casing 1 .
  • a first air duct 4 is formed between the parts 2
  • a second air duct 5 is formed between the inner wall of the casing 1 and the end of the battery 3
  • the battery core tabs 31 are located in the second air duct 5 .
  • the exhaust assembly 6 is arranged on the bottom wall of the housing 1 and communicates with the installation cavity. The exhaust assembly 6 is used to communicate the installation cavity, the interior space and the exterior space, and the exhaust assembly 6 is connected to the interior space and the exterior space.
  • the connection area is adjustable.
  • the support member 2 can not only support the stable installation of the plurality of batteries 3 in the casing 1 , but also form a first wind between the support member 2 and the side wall of the battery 3 .
  • a second air duct 5 can be formed between the plurality of supports 2 and the inner wall of the casing 1, and the battery 3 is installed in the casing.
  • a plurality of supports 2 and a plurality of batteries 3 can divide the installation cavity into a plurality of first air ducts 4 and a plurality of second air ducts 5, and the cell tabs 31 of the batteries 3 are located in the support 2 In the second air duct 5 between it and the inner wall of the housing 1 .
  • the cooling air circulates in the vertical direction and passes through the plurality of first air ducts 4 and the plurality of second air ducts 5 respectively, and then enters the exhaust assembly 6 , when the cooling air circulates in the first air duct 4 , it can simultaneously cool the side walls of the battery 3 and the support 2 on both sides of the first air duct 4 , and when the cooling air circulates in the plurality of first air ducts 4 It has a cooling effect on the two side walls of all batteries 3, which ensures the cooling effect of the battery 3 during the use of the power battery cooling module; when the cooling air circulates in the second air duct 5, it can not only cool the end face of the battery 3 and the battery 3;
  • the side wall of the casing 1 has a cooling effect, and can also effectively cool the cell tabs 31 on the end face of the battery 3, thereby effectively reducing the temperature of the cell tabs 31 when the battery 3 is working, ensuring that the battery 3
  • the operating temperature is within the normal range
  • the forced heat dissipation of the battery tabs 31 and the sides of the batteries 3 can be better achieved, which not only has a good heat dissipation effect, but also makes the battery 3
  • the temperature distribution is more uniform, which effectively reduces the possibility of thermal runaway of the power battery cooling module.
  • the exhaust assembly 6 can discharge the cooling air that has been radiated into the cabin again, which can eliminate the phenomenon of pressure drop in the cabin after the air source is extracted.
  • the exhaust assembly 6 can also The cooling air is discharged to the space outside the vehicle.
  • the exhaust assembly 6 can close the connection between it and the interior space of the vehicle, and discharge the harmful gas and cooling air to the outside of the vehicle, which can better ensure that the harmful gas will not affect the passengers, and can also more quickly.
  • the heat of thermal runaway is discharged to the outer space of the vehicle, which can achieve better emergency treatment of thermal runaway.
  • the support member 2 can form a plurality of first air ducts 4 and second air ducts 5 in the installation cavity, and the cooling air input from the air source into the installation cavity can pass through the first air duct 4
  • the cooling air can be discharged from the exhaust assembly 6 to the interior space and the exterior space of the vehicle.
  • the plurality of batteries 3 are divided into two groups of battery packs, each group of battery packs includes a plurality of batteries 3 spaced along the length direction of the casing 1 , and the two groups of battery packs They are arranged at intervals in the width direction of the casing 1 , and the cell tabs 31 of the two groups of battery packs are respectively connected to two opposite inner walls of the casing 1 .
  • the power battery cooling module further includes a heat insulating member 7, one end of each battery pack is abutted on the side wall of the heat insulating member 7, and the The other end is provided with cell tabs 31 , and the cell tabs 31 of the two sets of battery packs are respectively connected to two opposite inner walls of the casing 1 .
  • the heat insulating member 7 can not only have a heat insulating effect on the plurality of batteries 3 of the two battery packs, but also can play a buffering and electrical insulating effect, so as to ensure the reliability of the power battery cooling module.
  • the heat insulating member 7 is an elastic structure
  • the thickness of the heat insulating member 7 is 1mm-5mm
  • the heat insulating member 7 can be made of EPDM (Ethylene Propylene Diene Monomer, EPDM rubber) foam or silicon foam, etc. Made of materials with thermal, buffering and insulating effects.
  • EPDM Ethylene Propylene Diene Monomer, EPDM rubber
  • the plurality of supports 2 are divided into two groups of supports, and the groups of supports include a plurality of supports 2 distributed at intervals along the length direction of the housing 1 , and the two groups One end of the support group is abutted on the two side walls of the heat insulating element 7 respectively, and there is a gap between the other end of the two support groups and the two independent side walls of the housing 1 which are disposed opposite to each other.
  • the arrangement of the two support groups can better adapt to the power battery cooling module with the heat insulating member 7, thereby ensuring the reliable arrangement of the plurality of first air ducts 4 in the installation cavity,
  • the housing 1 includes two end plates 11 , two side plates 12 and a plurality of bus bars 13 , and the two side plates 12 are provided with a plurality of mounting holes, Each bus bar 13 is connected to the cell tabs 31 of one battery 3 , and each bus bar 13 is embedded in a mounting hole.
  • the end plate 11 and the side plate 12 can form a safe and reliable housing 1, and the bus bar 13 can be connected to the cell tabs 31 so as to facilitate the extraction of electricity from the plurality of batteries 3.
  • the bus bar 13 can be matched with the side plate 12 when the battery 3 is installed in the installation cavity, and the bus bar 13 can be firmly connected to the side plate 12 under the limitation of the battery 3 .
  • the cell tabs 31 are connected to the busbar by welding, and the end plate 11 and the side plate 12 are connected by adhesive bonding, or are connected by a snap connection structure and a connection structure such as screws and bolts to achieve a stable connection.
  • the cover plate can be made of mica, and the thickness of the cover plate is 2mm-8mm.
  • the side panels 12 are fabricated from heat and impact resistant materials.
  • the heat and impact resistant material may be Phlogopite, Kevlar.
  • the side plate 12 can bear the impact of the high-heat and high-pressure gas leaked from the interior of the battery 3 during the thermal runaway, so as to ensure the stability of the casing 1 and effectively reduce the thermal runaway. Risk of loss of control.
  • the support member 2 can be a plate body.
  • the plate body can be wavy.
  • the projection of the support 2 on the bottom wall of the housing 1 is S-shaped.
  • the support member 2 can not only have a better supporting effect on the battery 3, but also can increase the cross-sectional area of the first air duct 4 and improve the cooling flow in the first air duct 4.
  • the flow rate of the air is increased to maximize the contact area between the cooling air and the side surface of the battery 3 , thereby improving the cooling effect of the cooling air on the battery 3 .
  • the projection of the support member 2 on the bottom wall of the housing 1 can also be formed as a plurality of spaced-distributed protrusion and groove structures, or formed as a plurality of sequentially connected triangular structures.
  • the specific structure of the component 2 can be determined according to actual requirements, as long as the flow rate of the cooling air in the first air duct 4 can be increased.
  • the thickness of the support member 2 is 0.2 mm-1 mm, and the support member 2 can be made of materials such as PP/PE-TD40.
  • the exhaust assembly 6 includes a communication pipe 61 , a first exhaust pipe 62 , a second exhaust pipe 63 and a regulating member 64 .
  • One end of the communication pipe 61 communicates with the installation cavity.
  • One end of the first exhaust pipe 62 is communicated with the other end of the communication pipe 61 , and the other end of the first exhaust pipe 62 is communicated with the vehicle interior space.
  • One end of the second exhaust pipe 63 is communicated with the other end of the communication pipe 61 , and the other end of the second exhaust pipe 63 is communicated with the outside space.
  • the adjusting member 64 is provided at the connection between the communication pipe 61 and the first exhaust pipe 62 , and the adjusting member 64 is used to adjust the communication area between the communication pipe 61 and the first exhaust pipe 62 and the second exhaust pipe 63 respectively.
  • the adjustment of the exhaust assembly 6 from the installation cavity to the vehicle interior space can be better achieved.
  • the flow rate of the cooling air output from the outside space makes it easy for the adjusting member 64 to output cooling air with different flow rates to different positions according to the actual situation, which not only ensures the safe use of the power battery cooling module, but also ensures the safety of the user.
  • the wall thickness of the communication pipe 61 , the first exhaust pipe 62 , and the second exhaust pipe 63 is 1 mm-3 mm, and the communication pipe 61 , the first exhaust pipe 62 , and the second exhaust pipe 63 have a thickness of 1 mm to 3 mm.
  • 63 can be made of HDPE (High Density Polyethylene, high density polyethylene) or PPE-TD and other materials, has good strength and durability, and is not easy to react with cooling air.
  • the first exhaust pipe 62 is connected with the interior trim panel of the vehicle body to discharge cooling air into the vehicle interior; the second exhaust pipe 63 is communicated with the gap between the interior trim panel of the vehicle body and the sheet metal of the vehicle body, thereby Cooling air can be exhausted from the body vents to the outside of the vehicle.
  • the adjusting member 64 includes a driving member 641 and a valve plate 642 .
  • the driving member 641 is provided on the outer wall of the communication pipe 61 and/or the first exhaust pipe 62 .
  • the valve plate 642 is rotatably provided at the connection between the communication pipe 61 and the first exhaust pipe 62 , and the valve plate 642 is connected with the output end of the driving member 641 .
  • the driving member 641 can adjust the rotation angle of the valve plate 642 according to the actual demand, so as to realize the adjustment of the communication area between the communication pipe 61 and the first exhaust pipe 62 and the second exhaust pipe 63, and then adjust the The flow of cooling air into the interior and exterior spaces of the vehicle.
  • the power battery cooling module further includes a controller, the controller can receive the real-time temperature of the plurality of batteries 3 , and the controller can control the driving member 641 to drive the valve plate 642 to rotate according to the temperature of the batteries 3 , so as to realize the first exhaust pipe 62 And the air volume control of the second exhaust pipe 63.
  • the valve plate 642 is provided with a plurality of reinforcing ribs, and the reinforcing ribs can strengthen the strength of the valve plate 642 , so that the cooling air can still be transmitted from the communication pipe 61 to the first exhaust pipe 62 and the second exhaust pipe 63 . Maintain stability, effectively reducing vibration and noise when the valve plate 642 is impacted by cooling air.
  • the thickness of the valve plate 642 is 3mm-8mm, and the valve plate 642 can be made of PPE-TD20.
  • the driver 641 includes a motor with a feedback function, and the motor can transmit the rotation angle of the valve plate 642 relative to the initial position to the controller, so that the controller can adjust the valve plate 642 according to the real-time rotation angle of the valve plate 642. 642 for control.
  • the embodiment of the present application also discloses a thermal runaway processing method.
  • the thermal runaway processing method adopts the power battery cooling module described above, and the thermal runaway processing method includes: S1, the controller monitors whether the thermal runaway phenomenon occurs inside the casing 1; S2. In response to the controller monitoring the thermal runaway phenomenon inside the housing 1, the controller increases the intake air volume and the intake speed of the air source toward the installation cavity; S3, the exhaust assembly 6 closes the passage between the installation cavity and the interior space of the vehicle And adjust the connection area between the installation cavity and the outside space to the maximum.
  • step S2 can effectively speed up the gas circulation speed in the first air duct 4 and the second air duct 5, thereby improving the discharge efficiency of harmful gases and the heat dissipation speed of the battery 3, so as to play a better role in the thermal runaway phenomenon.
  • Step S3 can ensure that the harmful gas will not be discharged to the interior space of the vehicle, and can completely discharge the harmful gas to the exterior space of the vehicle, so as to ensure that the thermal runaway phenomenon can have the best protection effect for the user.
  • the controller can judge whether thermal runaway occurs according to the temperature of the battery 3 , and then install the battery 3 according to the actual situation inside the battery 3 .
  • the cooling air in the cavity is exhausted from the first exhaust pipe 62 and the second exhaust pipe 63, thereby ensuring rapid cooling of the battery 3 that generates thermal runaway and reliable guarantee for the safety of users.
  • the following describes a power battery cooling module and a thermal runaway processing method according to an embodiment of the present application with reference to FIGS. 1 to 4 .
  • the power battery cooling module of this embodiment includes a casing 1 , a support member 2 , a battery 3 , an exhaust assembly 6 and a heat insulation member 7 .
  • the housing 1 includes two end plates 11 , two side plates 12 and a plurality of bus bars 13 .
  • the two side plates 12 are provided with a plurality of mounting holes, and each bus bar 13 is connected to a cell tab 31 of a battery 3 For connection, each bus bar 13 is embedded in a mounting hole.
  • the side plates 12 are made of heat-resistant and impact-resistant materials.
  • the supporting member 2 is arranged in the installation cavity, and there are multiple supporting members 2, and the plurality of supporting members 2 are distributed at intervals along the length direction of the casing 1, and a supporting member 2 is respectively provided on the two opposite inner walls of the casing 1. There are gaps between both ends of the support member 2 and the inner wall of the housing 1 .
  • the plurality of support members 2 are divided into two groups of support members.
  • the support member group includes a plurality of support members 2 distributed along the length direction of the housing 1 at intervals. On each of the side walls, there is a gap between the other end of the two supporting member groups and the two independent side walls disposed opposite to the housing 1 .
  • the projection of the support 2 on the bottom wall of the housing 1 is S-shaped.
  • each battery 3 There are a plurality of batteries 3 , the cell tabs 31 of each battery 3 are connected to the inner wall of the casing 1 , the batteries 3 are arranged between two adjacent support members 2 , and between the side wall of the battery 3 and the support member 2 A first air duct 4 is formed, a second air duct 5 is formed between the inner wall of the casing 1 and the end of the battery 3 , and the cell tabs 31 are located in the second air duct 5 .
  • the plurality of batteries 3 are divided into two groups of battery packs, each group of battery packs includes a plurality of batteries 3 arranged at intervals along the length direction of the casing 1, the two groups of battery packs are arranged at intervals in the width direction W of the casing 1, and the two groups of batteries
  • the cell tabs 31 of the group are respectively connected to two opposite inner walls of the housing 1 .
  • the exhaust assembly 6 is arranged on the bottom wall of the housing 1 and communicates with the installation cavity.
  • the exhaust assembly 6 is used to communicate the installation cavity, the interior space and the exterior space, and the exhaust assembly 6 is connected to the interior space and the exterior space.
  • the connection area is adjustable.
  • the exhaust assembly 6 includes a communication pipe 61 , a first exhaust pipe 62 , a second exhaust pipe 63 and a regulating member 64 .
  • One end of the communication pipe 61 communicates with the installation cavity.
  • One end of the first exhaust pipe 62 is communicated with the other end of the communication pipe 61 , and the other end of the first exhaust pipe 62 is communicated with the vehicle interior space.
  • the adjusting member 64 is provided at the connection between the communication pipe 61 and the first exhaust pipe 62 , and the adjusting member 64 is used to adjust the communication area between the communication pipe 61 and the first exhaust pipe 62 and the second exhaust pipe 63 .
  • the adjusting member 64 includes a driving member 641 and a valve plate 642 .
  • the driving member 641 is provided on the outer wall of the communication pipe 61 and/or the first exhaust pipe 62 .
  • the valve plate 642 is rotatably provided at the connection between the communication pipe 61 and the first exhaust pipe 62 , and the valve plate 642 is connected with the output end of the driving member 641 .
  • each battery pack is abutted on the side wall of the heat insulator 7 , and the other end of each battery pack is provided with cell tabs 31 .
  • the two inner walls arranged opposite to each other are connected.
  • a thermal runaway processing method adopts the power battery cooling module described above, and the thermal runaway processing method includes: a controller detects that a thermal runaway phenomenon occurs inside the casing 1; the controller raises the air source toward the installation cavity. The air intake volume and air intake speed are adjusted; the exhaust assembly 6 closes the passage between the installation cavity and the interior space and adjusts the communication area between the installation cavity and the exterior space to the maximum.
  • the embodiment of the present application proposes a power battery cooling module, which can improve the cooling effect of the battery and can better handle the thermal runaway phenomenon.
  • the embodiment of the present application proposes a thermal runaway processing method, which can improve the cooling rate of the battery when the thermal runaway phenomenon occurs and ensure that the thermal runaway gas inside the module does not leak into the interior space of the vehicle.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 5 , the electronic device includes: one or more processors 810 and a memory 820 . A processor 810 is taken as an example in FIG. 5 .
  • the electronic device may further include: an input device 830 and an output device 840 .
  • the electronic device may also not include the input device 830 and the output device 840 .
  • the processor 810 , the memory 820 , the input device 830 and the output device 840 in the electronic device may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 5 .
  • the memory 820 can be configured to store software programs, computer-executable programs, and modules.
  • the processor 810 executes a variety of functional applications and data processing by running the software programs, instructions and modules stored in the memory 820 to implement any one of the methods in the foregoing embodiments.
  • the memory 820 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the electronic device, and the like.
  • the memory may include volatile memory such as random access memory (Random Access Memory, RAM), and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage devices.
  • RAM random access memory
  • non-volatile memory such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage devices.
  • Memory 820 may be a non-transitory computer storage medium or a transitory computer storage medium.
  • the non-transitory computer storage medium such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • memory 820 may optionally include memory located remotely from processor 810, which may be connected to the electronic device via a network. Examples of such networks may include the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the input device 830 may be configured to receive input numerical or character information, and to generate key signal input related to user settings and function control of the electronic device.
  • the output device 840 may include a display device such as a display screen.
  • This embodiment also provides a computer-readable storage medium storing a computer program, where the computer program is used to execute the above method.
  • the storage medium may be a non-transitory storage medium.
  • non-transitory computer-readable storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a RAM, or the like.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Les modes de réalisation de la présente invention concernent un module de refroidissement de batterie d'alimentation, un dispositif et un procédé de traitement d'emballement thermique, ainsi qu'un support de stockage. Le module de refroidissement de batterie d'alimentation comprend une coque, des éléments de support, des batteries et un ensemble d'évacuation. Une cavité de montage est formée dans la coque, et une source de gaz en communication avec la cavité de montage est disposée sur la paroi supérieure de la coque. Les éléments de support sont disposés dans la cavité de montage ; le nombre d'éléments de support est supérieur à un ; la pluralité d'éléments de support sont répartis à des intervalles le long de la direction de la longueur de la coque ; un élément de support et un autre élément de support sont respectivement disposés sur deux parois internes opposées de la coque. Le nombre de batteries est supérieur à un ; des premiers passages de gaz sont formés entre des parois latérales des batteries et les éléments de support ; un second passage de gaz est formé entre la paroi interne de la coque et les extrémités des batteries ; des pattes de cellule sont situées dans le second passage d'air. L'ensemble d'évacuation est disposé sur la paroi inférieure de la coque et est en communication avec la cavité de montage, et l'ensemble d'évacuation est utilisé pour faire communiquer la cavité de montage avec un espace intérieur et un espace extérieur et rendre les zones de communication entre l'ensemble d'évacuation et l'espace intérieur et entre l'ensemble d'évacuation et l'espace extérieur réglables.
PCT/CN2021/132971 2020-11-25 2021-11-25 Module de refroidissement de batterie d'alimentation, procédé et dispositif de traitement d'emballement thermique, et support de stockage WO2022111552A1 (fr)

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CN112467245A (zh) * 2020-11-25 2021-03-09 中国第一汽车股份有限公司 一种动力电池冷却模组及热失控处理方法
CN112550076B (zh) * 2020-12-03 2022-08-16 上汽大众汽车有限公司 一种电池包风道的热失控防控设备
CN113097627B (zh) * 2021-03-31 2023-05-19 珠海冠宇动力电池有限公司 一种电池包
CN113097639A (zh) * 2021-03-31 2021-07-09 珠海冠宇动力电池有限公司 一种电池包
CN114678652B (zh) * 2022-04-08 2024-03-19 欣旺达动力科技股份有限公司 单体电池及电池包

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