Whole vehicle thermal runaway control system and whole vehicle

Through the design of the vehicle thermal runaway control system, efficient heat removal and stable power supply are achieved during thermal runaway of electric vehicles, solving the problem of sudden power loss caused by thermal runaway of electric vehicles and ensuring driver safety.

CN117656835BActive Publication Date: 2026-06-12悠跑科技(合肥)有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
悠跑科技(合肥)有限公司
Filing Date
2022-08-23
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

When an electric vehicle experiences thermal runaway, current technology cannot effectively utilize the remaining charge in the battery cells, causing the electric vehicle to suddenly lose power and become unable to efficiently dissipate heat, posing a risk of stalling.

Method used

A vehicle thermal runaway control system was designed. By combining a high-voltage power supply module, an electric drive assembly module, a refrigeration module, and a transformer module, the system achieves semi-enclosed high-voltage isolation of the thermal runaway power supply unit. It also utilizes the normal power supply unit to provide voltage boost to power the refrigeration module and drive the refrigerant direct cooling circuit to efficiently remove heat.

🎯Benefits of technology

In the event of thermal runaway, it provides a stable high-voltage power supply to the entire vehicle system, drives the refrigerant direct cooling circuit, efficiently removes heat, and ensures that the driver has enough time to safely leave the danger zone.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application provides a whole vehicle thermal runaway control system. When a power supply device unit of a high-voltage power supply module occurs thermal runaway, under the control of a control module, a circuit breaking device unit connected with the power supply device unit corresponding to the thermal runaway is disconnected, a first switch unit connected with the power supply device unit corresponding to the thermal runaway continues to be disconnected, other first switch units are closed, and a second switch unit and a third switch unit are controlled to be disconnected to isolate the power supply device unit corresponding to the thermal runaway; and a voltage output by a remaining normal power supply device unit is input to a first voltage transformation module, so that the voltage is stepped up to a normal high voltage first refrigeration module for power supply, so as to maintain the voltage required for normal work of the first refrigeration module and start the first refrigeration module for refrigeration, and the power of the electric drive assembly module is controlled to be reduced to zero within a preset time.
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Description

Technical Field

[0001] This invention relates to the field of thermal runaway of power battery packs, and more particularly to a thermal runaway control system for a vehicle and the vehicle itself. Background Technology

[0002] To effectively reduce the hazards of battery thermal runaway, transferring excess heat from the thermally runaway cell to the outside is an effective method for suppressing heat diffusion. Currently, when thermal runaway occurs, the high-voltage circuit inside the battery is at risk of arcing after the cell thermally runs away, preventing the safe and effective use of the remaining intact cells. Only the 12V battery can be used to start the water pump in liquid-cooled vehicles, which has limited heat transfer. Furthermore, for refrigerant-cooled vehicles, which require high voltage to drive the onboard compressor, there is no way to address the heat accumulation after thermal runaway. Simultaneously, because the battery cannot supply normal high-voltage power externally when thermal runaway occurs, the electric vehicle may suddenly lose power, leading to a stall hazard. Summary of the Invention

[0003] This invention provides a vehicle thermal runaway control system and a vehicle, which can still provide a stable high voltage to the vehicle system when thermal runaway occurs in the high voltage power supply module of the vehicle, for emergency avoidance, and drive the refrigerant direct cooling circuit to remove heat more efficiently and suppress heat diffusion.

[0004] According to a first aspect of the present invention, a vehicle thermal runaway control system is provided, comprising: a high-voltage power supply module, an electric drive assembly module, a first cooling module, a first transformer module, a second transformer module, and a control module; wherein:

[0005] The high-voltage power supply module includes N power supply device units connected in series, and a circuit breaker unit is connected between adjacent power supply device units; the two ends of each circuit breaker unit are respectively coupled to the first end of the neutral line through a first switch unit; the second end of the neutral line is coupled to the first end of the first transformer module; the high-voltage power supply module is used to output a first voltage through its positive and negative terminals; where N is a positive integer and N≥2;

[0006] The second and third terminals of the first transformer module are coupled to the positive and negative terminals respectively, the fourth terminal is coupled to the second terminal through a second switching unit, and the fifth terminal is coupled to the third terminal through a third switching unit.

[0007] The first terminal of the second transformer module is coupled to the fourth terminal of the first transformer module, and the second terminal of the second transformer module is coupled to the fifth terminal of the first transformer module, for stepping down the input first voltage to a third voltage to power the electric drive assembly module;

[0008] The first end of the electric drive assembly module is coupled to the third end of the second transformer module, and the second end of the electric drive assembly module is coupled to the fourth end of the second transformer module;

[0009] The first end of the first refrigeration module is coupled to the fourth end of the first transformer module, and the second end of the first refrigeration module is coupled to the fifth end of the first transformer module.

[0010] The control module is used for:

[0011] The status of each power supply unit is monitored in real time. Under normal circumstances, all circuit breaker units, the second switch unit, and the third switch unit are closed, and all first switch units are opened, so that the high-voltage power supply module can supply power to the outside with the first voltage; and

[0012] When at least one of the power supply units experiences thermal runaway, the circuit breaker unit connected to the corresponding thermally runaway power supply unit is disconnected, and the first switch unit connected to the corresponding thermally runaway power supply unit remains disconnected. Other first switch units are closed, and the second switch unit and the third switch unit are disconnected to isolate the corresponding thermally runaway power supply unit. The second voltage provided by the other power supply units is supplied to the first transformer module, which boosts the second voltage to generate the first voltage to power the first cooling module, maintaining the voltage required for normal operation of the first cooling module. The first cooling module is then started to cool the module and the output power of the electric drive assembly module is controlled to gradually decrease to zero within a set time.

[0013] Optionally, the control module includes a first control module and a second control module;

[0014] The first control module is used to monitor the status of each power supply unit in real time, and under normal circumstances, controls all circuit breaker units, the second switch unit, and the third switch unit to close, and controls all first switch units to open, so as to enable the high-voltage power supply module to supply power to the outside with the first voltage; and

[0015] When at least one of the power supply units experiences thermal runaway, the circuit breaker unit connected to the corresponding thermally runaway power supply unit is disconnected, and the first switch unit connected to the corresponding thermally runaway power supply unit remains disconnected, while other first switch units are closed. The second switch unit and the third switch unit are also disconnected to isolate the corresponding thermally runaway power supply unit. The first transformer module is driven to boost the second voltage input from the remaining normally powered power supply units to generate the first voltage to power the first cooling module. Simultaneously, a first thermal runaway signal is sent to the second control module.

[0016] The second power supply module is used to control the first cooling module to output full power and control the output power of the electric drive assembly module to drop to zero within the preset time according to the received first thermal runaway signal.

[0017] Optionally, the first control module is further configured to control all circuit breaker units and all first switch units to disconnect and shut down the first transformer module when all power supply units are detected to be abnormally powered; and the first control module sends a second thermal runaway signal to the second control module.

[0018] The second control module is also used to control the first refrigeration module to stop refrigeration based on the received second thermal runaway signal.

[0019] Optionally, the abnormal power supply includes thermal runaway of the power supply unit or the SOC of the power supply unit being lower than a set value.

[0020] Optionally, the first refrigeration module includes at least an on-board compressor;

[0021] When the second control module receives the first thermal runaway signal, the second control module controls the on-board compressor to output full power to cool the power supply unit that has experienced thermal runaway.

[0022] When the second control module receives the second thermal runaway signal, the second control module controls the output power of the vehicle compressor to be reduced to zero.

[0023] Optionally, the first control module is also used to shield the circuit breaker unit from accidental activation, control all first switch units to close, control the second switch unit and the third switch unit to close, and simultaneously control the first transformer module to close. The high-voltage power supply module supplies power to the outside through the positive and negative terminals. Accidental activation of the circuit breaker unit is used to indicate that the circuit breaker unit is erroneously triggered when the power supply unit has not experienced thermal runaway.

[0024] Optionally, the circuit breaker unit includes at least a spark fuse; the circuit breaker unit includes at least a circuit breaker.

[0025] Optionally, the first transformer module includes at least a DC / DC converter.

[0026] According to a second aspect of the present invention, a vehicle is provided that includes the vehicle thermal runaway control system provided by the first aspect and alternative solutions of the present invention.

[0027] The vehicle thermal runaway control system provided by this invention, when the power supply unit in the high-voltage power supply module experiences thermal runaway, the first control unit will partially isolate the circuit of the thermally runaway power supply unit and connect the remaining normal power supply units to the first transformer module to provide stable high voltage for the vehicle system. At the same time, the second control unit will control the first cooling module to cool the thermally runaway power supply unit and control the output power of the electric drive assembly module to gradually decrease to zero within a set time to ensure that the driver can safely drive away from the danger zone within a certain period of time. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is one of the schematic diagrams of the module structure of the vehicle thermal runaway control system provided in the embodiment of the present invention;

[0030] Figure 2 This is the second schematic diagram of the module structure of the vehicle thermal runaway control system provided in this embodiment of the invention;

[0031] Figure 3 This is the third schematic diagram of the module structure of the vehicle thermal runaway control system provided in this embodiment of the invention;

[0032] Figure 4 This is a schematic diagram of the module structure of the second refrigeration module provided in an embodiment of the present invention;

[0033] Figure 5 This is the fourth schematic diagram of the module structure of the vehicle thermal runaway control system provided in this embodiment of the invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100-High Voltage Power Supply Module;

[0036] 101 - Power supply unit;

[0037] 102 - Circuit breaker unit;

[0038] 103 - First Switching Unit;

[0039] 104 - Second Switching Unit;

[0040] 105 - Third Switching Unit;

[0041] 200 - Control Module;

[0042] 201 - First Control Module;

[0043] 202 - Second Control Module;

[0044] 300-Electric Drive Assembly Module;

[0045] 400 - First Refrigeration Module;

[0046] 401 - Vehicle-mounted compressor;

[0047] 500: - First transformer module;

[0048] 600 - Second transformer module;

[0049] 700-Second Refrigeration Module

[0050] 701 - Storage Battery;

[0051] 702 - Water Pump;

[0052] 703 - Fan. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0056] Please refer to Figure 1 The present invention provides a vehicle thermal runaway control system, comprising a high-voltage power supply module 100, an electric drive assembly module 300, a first cooling module 400, a first transformer module 500, a second transformer module 600, and a control module 200; wherein:

[0057] The high-voltage power supply module 100 includes N power supply device units 101 connected in series, and a circuit breaker unit 102 is connected between adjacent power supply device units 101; the two ends of each circuit breaker unit 102 are respectively coupled to the first end of the neutral line through a first switch unit 103; the second end of the neutral line is coupled to the first end of the first transformer module 500; the high-voltage power supply module 100 is used to output a first voltage to the outside through its positive and negative terminals; where N is a positive integer and N≥2;

[0058] The second and third terminals of the first transformer module 500 are respectively coupled to the positive and negative terminals, the fourth terminal is coupled to the second terminal through the second switch unit 104, and the fifth terminal is coupled to the third terminal through the third switch unit 105.

[0059] The first terminal of the second transformer module 600 is coupled to the fourth terminal of the first transformer module 500, and the second terminal of the second transformer module 600 is coupled to the fifth terminal of the first transformer module 500, for stepping down the input first voltage to a third voltage to power the electric drive assembly module 300; the third voltage is less than the first voltage;

[0060] The first end of the electric drive assembly module 300 is coupled to the third end of the second transformer module 600, and the second end of the electric drive assembly module 300 is coupled to the fourth end of the second transformer module 600.

[0061] The first end of the first cooling module 400 is coupled to the fourth end of the first transformer module 500, and the second end of the first cooling module 400 is coupled to the fifth end of the first transformer module 500.

[0062] The control module 200 is used for:

[0063] The status of each power supply unit 101 is monitored in real time. Under normal circumstances, all circuit breaker units 102, the second switch unit 104, and the third switch unit 105 are closed, and all first switch units 103 are opened, so that the high-voltage power supply module 100 can supply power to the outside with the first voltage; and

[0064] When at least one of the power supply unit 101 experiences thermal runaway, the circuit breaker unit 102 connected to the corresponding thermally runaway power supply unit 101 is disconnected, and the first switch unit 103 connected to the corresponding thermally runaway power supply unit 101 remains disconnected, while other first switch units 103 are closed. The second switch unit 104 and the third switch unit 105 are also disconnected to isolate the corresponding thermally runaway power supply unit 101. A second voltage is provided to the first transformer module 500 through other power supply units 101. The first transformer module 500 boosts the second voltage to generate the first voltage to power the first cooling module 400, maintaining the voltage required for normal operation. The first cooling module 400 is then activated to directly cool the thermally runaway power supply unit 101 with refrigerant. The power of the electric drive assembly module 300 is controlled to reduce to zero within a preset time. The first voltage is greater than the second voltage.

[0065] Please refer to Figure 2 In one specific implementation, the control module 200 includes a first control module 201 and a second control module 202;

[0066] The first control module 201 monitors the status of each power supply unit 101. Under normal circumstances, it sends a hard-wired low-level signal to the circuit breaker unit 102, the second switch unit 104, and the third switch unit 105 to control their closure, and sends a hard-wired high-level signal to the first switch unit 103 to control its opening, so as to enable the high-voltage power supply module 100 to supply power to the outside with the first voltage.

[0067] When at least one of the power supply unit 101 experiences thermal runaway, a hard high-level signal is sent to the corresponding thermally runaway power supply unit 101 to control its disconnection. Simultaneously, a hard high-level signal is sent to the first switching unit 103 connected to the corresponding thermally runaway power supply unit 101 to control its disconnection, while a hard low-level signal is sent to other first switching units 103 to control their closing. A hard high-level signal is also sent to the second switching unit 104 and the third switching unit 105 to control their disconnection, thus isolating the corresponding thermally runaway power supply unit 101. At the same time, a first drive signal is sent to the first transformer module 500 via the CAN bus to drive the first transformer module 500 to operate normally, and the second voltage input from the remaining normally powered power supply units 101 is boosted to generate the first voltage to provide high-voltage power to the electric drive assembly module 300 and the first cooling module 400. Simultaneously, a first thermal runaway signal is sent to the second control module 202 via the CAN bus.

[0068] The second power supply module is used to send a first control signal to the electric drive assembly module 300 via the CAN bus according to the received first thermal runaway signal, to control its output power to drop to zero within the preset time; and to send a second control signal to the first cooling module 400 via the CAN bus to control its full power output for cooling.

[0069] When a portion of the power supply unit 101 experiences thermal runaway, the first control module 201 performs partial high-voltage isolation on the circuit of the thermally runaway power supply unit 101 and connects the remaining normal power supply units 101 to the first transformer module 500 to provide stable high voltage for the entire vehicle system. At the same time, the second control unit controls the first cooling module 400 to cool the thermally runaway power supply unit 101 and controls the electric drive assembly module 300 to gradually reduce its output power to zero within a set time to ensure that the driver can safely drive away from the danger zone within a certain period of time.

[0070] In one specific implementation, the first control module 201 is further configured to send the hard-wired high-level signal to all the circuit breaker units 102 to control their disconnection when all power supply device units 101 are detected to be abnormally powered, and send a first power-down signal to the first transformer module 500 via the CAN bus to control its shutdown; at the same time, the first control module 201 sends a second thermal runaway signal to the second control module 202 via the CAN bus;

[0071] The second control module 202 is also used to send a third control signal to the first refrigeration module 400 via the CAN bus to control it to stop working, based on the received second thermal runaway signal.

[0072] Please refer to Figure 2 In one specific implementation, the abnormal power supply includes thermal runaway of the power supply unit 101 or the SOC of the power supply unit 101 being lower than a set value.

[0073] In a preferred embodiment, the first refrigeration module 400 includes at least an on-board compressor 401;

[0074] Under the control of the second control signal, the on-board compressor 401 outputs full power to directly cool the power supply unit that has experienced thermal runaway.

[0075] Under the control of the third control signal, the output power of the on-board compressor 401 is reduced to zero.

[0076] Please refer to Figure 3 and Figure 4 In one specific implementation, the vehicle thermal runaway control system further includes a second refrigeration module 700;

[0077] In this specific embodiment, the vehicle uses a coolant circulation system to remove the heat from the power supply unit 101 that has experienced thermal runaway, thereby achieving the purpose of heat dissipation; wherein, the on-board compressor 401 is used to cool the coolant.

[0078] The first and second terminals of the second cooling module 700 are respectively coupled to the third and fourth terminals of the second transformer module 600. The second cooling module 700 is used to drive the flow of coolant in the coolant circulation system and dissipate heat from it. The second transformer module 600 is also used to output the third voltage to charge the second cooling module 700.

[0079] The second cooling module 700 includes at least a battery 701, a water pump 702, and a fan 703;

[0080] The first end of the storage battery 701 serves as the first end of the second cooling module 700 and is coupled to the first end of the water pump 702 and the first end of the fan 703. The second end of the storage battery 701 serves as the second end of the second cooling module 700 and is coupled to the second end of the water pump 702 and the second end of the fan 703. The storage battery 701 is used to receive the third voltage and supply power to the water pump 702 and the fan 703.

[0081] The water pump 702 is used to drive the flow of coolant in the coolant circulation system to dissipate heat from the power supply unit 101 that has experienced thermal runaway.

[0082] The fan 703 is used to dissipate heat from the coolant in the coolant circulation system.

[0083] When all the power supply units 101 are not supplying power normally, the first control module 201 cuts off the circuit of all the power supply units 101 and shuts down the first transformer module 500, while the second control module 202 shuts down the vehicle compressor 401.

[0084] In one specific implementation, the first control module 201 is also used to shield the circuit breaker unit 102 from accidental activation. In the event of accidental activation of the circuit breaker unit, the first control module sends the hard-wired low-level signal to all the first switch units 103 to control their closure, and sends the hard-wired low-level signal to the second switch unit 104 and the third switch unit 105 to control their closure. At the same time, it sends a first power-down signal to the first transformer module 500 via the CAN bus to control its shutdown. The high-voltage power supply module 100 supplies power to the outside through the positive and negative terminals. Accidental activation of the circuit breaker unit 102 is used to indicate that the circuit breaker unit 102 is erroneously triggered when the power supply unit 101 has not experienced thermal runaway.

[0085] In a preferred embodiment, the circuit breaker unit 102 includes at least a spark fuse, which is a one-time, acceptable external contact signal instantaneous power-off protection device. When a large voltage flows through a conventional circuit breaker, a sticking phenomenon occurs, preventing the power from being cut off. Compared with a conventional circuit breaker, the spark fuse can more effectively and quickly disconnect the connection from the power supply unit 101 that has experienced thermal runaway.

[0086] Of course, it should be understood that the circuit breaker unit 102 includes not only the spark fuse, but also relays, circuit breakers, and other devices. Any device that can achieve the circuit breaker function under the control of the first control module 201 is also within the protection scope.

[0087] In one specific implementation, the first transformer module 500 and the second transformer module 600 include at least a DC / DC converter; of course, it should be understood that any device capable of boosting the second voltage input to the power supply unit 101 to the first voltage is also within the protection range; the first voltage is greater than the second voltage.

[0088] In one specific implementation, the first control module 201 is a BMS, and the second control module 202 is a vehicle controller.

[0089] In one specific implementation, the first switching unit 103 and / or the second switching unit 104 and / or the third switching unit 105 are relays.

[0090] In one specific implementation, the power supply unit 101 is a power battery pack.

[0091] In one specific implementation, the neutral line is a conductor connecting the first transformer module 500 and the power supply unit 101 at the midpoint, and is essentially a copper busbar or power line with the same specifications as the main positive and main negative lines.

[0092] Embodiments of the present invention also provide a complete vehicle, including the vehicle thermal runaway control system and other parts of the vehicle.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle thermal runaway control system, comprising: include: The system comprises a high-voltage power supply module, an electric drive assembly module, a first refrigeration module, a first transformer module, a second transformer module, and a control module; wherein: The high-voltage power supply module includes N power supply device units connected in series, and a circuit breaker unit is connected between adjacent power supply device units; the two ends of each circuit breaker unit are respectively coupled to the first end of the neutral line through a first switch unit; the second end of the neutral line is coupled to the first end of the first transformer module; the high-voltage power supply module is used to output a first voltage to the outside through its positive and negative terminals; where N is a positive integer and N≥2; The second and third terminals of the first transformer module are coupled to the positive and negative terminals respectively, the fourth terminal is coupled to the second terminal through a second switching unit, and the fifth terminal is coupled to the third terminal through a third switching unit. The first terminal of the second transformer module is coupled to the fourth terminal of the first transformer module, and the second terminal of the second transformer module is coupled to the fifth terminal of the first transformer module, for stepping down the input first voltage to a third voltage to power the electric drive assembly module; The first end of the electric drive assembly module is coupled to the third end of the second transformer module, and the second end of the electric drive assembly module is coupled to the fourth end of the second transformer module; The first end of the first refrigeration module is coupled to the fourth end of the first transformer module, and the second end of the first refrigeration module is coupled to the fifth end of the first transformer module. The control module is used for: The status of each power supply unit is monitored in real time. Under normal circumstances, all circuit breaker units, the second switch unit, and the third switch unit are closed, and all first switch units are opened, so that the high-voltage power supply module can supply power to the outside with the first voltage. as well as When at least one of the power supply units experiences thermal runaway, the circuit breaker unit connected to the corresponding thermally runaway power supply unit is disconnected, and the first switch unit connected to the corresponding thermally runaway power supply unit remains disconnected. Other first switch units are closed, and the second switch unit and the third switch unit are disconnected to isolate the corresponding thermally runaway power supply unit. A second voltage is then supplied to the first transformer module through other power supply units. The first transformer module boosts the second voltage to generate the first voltage, which supplies power to the first cooling module to maintain the voltage required for normal operation of the first cooling module. The first cooling module is then activated to perform cooling, and the output power of the electric drive assembly module is controlled to gradually decrease to zero within a set time.

2. The vehicle thermal runaway control system according to claim 1, characterized in that, The control module includes a first control module and a second control module; The first control module is used to monitor the status of each power supply unit in real time. Under normal circumstances, it controls all circuit breaker units, the second switch unit and the third switch unit to close, and controls all first switch units to open, so as to enable the high voltage power supply module to supply power to the outside with the first voltage. as well as When at least one of the power supply units experiences thermal runaway, the circuit breaker unit connected to the corresponding thermal runaway power supply unit is disconnected, and the first switch unit connected to the corresponding thermal runaway power supply unit continues to disconnect, while other first switch units are closed, and the second switch unit and the third switch unit are disconnected to isolate the corresponding thermal runaway power supply unit. The first transformer module is driven to boost the second voltage input from the remaining normally powered power supply unit to generate the first voltage to power the first cooling module; at the same time, a first thermal runaway signal is sent to the second control module. The second control module is used to control the first cooling module to output full power and control the output power of the electric drive assembly module to drop to zero within a preset time according to the received first thermal runaway signal.

3. The vehicle thermal runaway control system according to claim 2, characterized in that, The first control module is also used to control all circuit breaker units and all first switch units to disconnect and shut down the first transformer module when all power supply units are detected to be abnormally powered; and the first control module sends a second thermal runaway signal to the second control module. The second control module is also used to control the first refrigeration module to stop refrigeration based on the received second thermal runaway signal.

4. The vehicle thermal runaway control system according to claim 3, characterized in that, Abnormal power supply includes thermal runaway of the power supply unit or the SOC of the power supply unit being lower than the set value.

5. The vehicle thermal runaway control system according to claim 3, characterized in that, The first refrigeration module includes at least an on-board compressor; When the second control module receives the first thermal runaway signal, the second control module controls the on-board compressor to output full power to cool the power supply unit that has experienced thermal runaway. When the second control module receives the second thermal runaway signal, the second control module controls the output power of the vehicle compressor to be reduced to zero.

6. The vehicle thermal runaway control system according to any one of claims 2 to 5, characterized in that, The first control module is also used to shield the circuit breaker unit from accidental activation. In the event of accidental activation of the circuit breaker unit, the first control module controls all first switch units to close, and controls the second switch unit and the third switch unit to close. At the same time, it controls the first transformer module to shut down. The high-voltage power supply module supplies power to the outside through the positive and negative terminals. Accidental activation of the circuit breaker unit is used to indicate that the circuit breaker unit is erroneously triggered when the power supply unit has not experienced thermal runaway.

7. The vehicle thermal runaway control system according to any one of claims 1 to 5, characterized in that, The circuit breaker unit includes at least a spark fuse.

8. The vehicle thermal runaway control system according to any one of claims 1 to 5, characterized in that, The circuit breaker unit includes at least a circuit breaker.

9. The vehicle thermal runaway control system according to any one of claims 1 to 5, characterized in that, The first transformer module includes at least a DC / DC converter.

10. A complete vehicle, characterized in that, Including the vehicle thermal runaway control system as described in any one of claims 1 to 9.