Vehicle thermal management system and vehicle

Abstract

The present disclosure relates to a vehicle thermal management system and a vehicle, and relates to the technical field of vehicle thermal management. The system comprises a heat exchange device, a range extender heat exchange circuit, a battery heat exchange circuit and a charger heat exchange circuit. The range extender heat exchange circuit is used for thermal management of a range extender. The battery heat exchange circuit is used for thermal management of a battery. The charger heat exchange circuit is used for thermal management of a charger. The heat exchange device is in heat exchange connection with the range extender heat exchange circuit, the battery heat exchange circuit and the charger heat exchange circuit respectively, so that the battery heat exchange circuit and / or the charger heat exchange circuit can exchange heat with the range extender heat exchange circuit. Thus, collaborative heat dissipation between the various heat exchange circuits can be achieved.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle thermal management technology, and more particularly to a vehicle thermal management system and a vehicle. Background Technology

[0002] With the increasing popularity of new energy vehicles, users' demand for charging speed is growing, and fast charging can significantly shorten the charging time. However, during high-power fast charging, the on-board charger and power battery pack generate a lot of heat. If the heat cannot be dissipated in time, it will affect the charging efficiency and damage the on-board charger and battery. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a vehicle thermal management system and a vehicle, which can make full use of the heat dissipation capacity of each heat exchange circuit in the thermal management system and realize coordinated heat dissipation between each heat exchange circuit, so that when the vehicle is fast charging, the temperature of the on-board charger and battery can be reduced to a reasonable range, ensuring the charging speed and improving the service life of the on-board charger and battery.

[0004] According to a first aspect of the present disclosure, a vehicle thermal management system is provided, comprising: A range extender heat exchange circuit is used for thermal management of the range extender, and the range extender heat exchange circuit includes a range extender heat dissipation device; Battery heat exchange circuit, used for battery thermal management; The charger heat exchange circuit is used for the thermal management of the charger. A heat exchange device is provided, which is connected to the range extender heat exchange circuit, the battery heat exchange circuit, and the charger heat exchange circuit respectively for heat exchange, so that the battery heat exchange circuit and / or the charger heat exchange circuit can exchange heat with the range extender heat exchange circuit.

[0005] In this embodiment, the range extender's heat exchange circuit and the battery's heat exchange circuit can be connected via a heat exchange device to achieve coordinated heat dissipation between them, improving the heat dissipation effect on the battery. The range extender's heat exchange circuit and the charger's heat exchange circuit can also be connected via a heat exchange device to achieve coordinated heat dissipation between them, improving the heat dissipation effect on the charger or range extender. This allows full utilization of the heat dissipation capacity of each heat exchange circuit in the thermal management system. When a heat exchange circuit is idle or under low load, its heat dissipation capacity can be dynamically reused for heat exchange circuits under high heat load, achieving coordinated heat dissipation between the various heat exchange circuits. This ensures that during fast charging, the temperature of the on-board charger and battery is reduced to a reasonable range, maintaining charging speed and extending the lifespan of the on-board charger and battery.

[0006] In some possible implementations, the heat exchange device includes a first heat exchange section and a second heat exchange section; The battery heat exchange circuit is connected to the range extender heat exchange circuit through the first heat exchange part, and the battery heat exchange circuit exchanges heat with the range extender heat exchange circuit through the first heat exchange part. The charger heat exchange circuit is connected to the range extender heat exchange circuit through the second heat exchange part, and the charger heat exchange circuit exchanges heat with the range extender heat exchange circuit through the second heat exchange part.

[0007] In this embodiment, the heat exchange device includes a first heat exchange section and a second heat exchange section. The first heat exchange section connects the range extender heat exchange circuit and the battery heat exchange circuit, and the second heat exchange section connects the range extender heat exchange circuit and the charger heat exchange circuit, so as to realize the coordinated heat dissipation between the range extender heat exchange circuit and the battery heat exchange circuit, as well as the coordinated heat dissipation between the range extender heat exchange circuit and the charger heat exchange circuit.

[0008] In some possible implementations, the system further includes a controller that is controllably connected to the heat exchange device, the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit, respectively, and the controller is configured to: In charging or driving conditions, in response to the fulfillment of the triggering condition corresponding to the target heat exchange circuit, the corresponding cooperating heat exchange circuit is controlled to perform cooperative heat dissipation on the target heat exchange circuit. The target heat exchange circuit includes at least one of the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit.

[0009] In this embodiment, under charging or driving conditions, the controller can perform load detection on the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit. When a heat exchange circuit is idle or under low load, its heat dissipation capacity can be dynamically reused for a target heat exchange circuit with high heat load, so as to achieve coordinated heat dissipation among the heat exchange circuits and improve the system's heat dissipation capacity.

[0010] In some possible implementations, the controller is configured to: During charging, in response to the fulfillment of the first trigger condition, the battery heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery.

[0011] In this embodiment, during charging, if the first triggering condition is met, the controller can control the battery heat exchange circuit to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery, so as to make full use of the heat exchange capacity of the range extender heat exchange circuit, improve the heat dissipation effect on the battery, and keep the battery temperature within a reasonable range.

[0012] In some possible implementations, the controller is configured to: During charging, the battery temperature of the battery and the start-up status of the range extender are obtained; If the battery temperature is greater than the battery temperature threshold and the range extender is in an inactive state, the first trigger condition is determined to be met.

[0013] In this embodiment, during charging, the battery temperature can be detected and the start-up status of the range extender can be determined. If the battery temperature is greater than the battery temperature threshold and the start-up status of the range extender is not started, it is determined that the heat dissipation capacity of the battery heat exchange circuit is insufficient and the range extender heat exchange circuit is in an idle state. It can be determined that the first trigger condition is met so that the range extender heat exchange circuit can be connected to assist the battery heat exchange circuit in heat dissipation, thereby improving the heat dissipation capacity and reducing the battery temperature.

[0014] In some possible implementations, the controller is configured to: The battery temperature of the battery and the heat exchange medium temperature of the range extender are obtained; Based on the battery temperature and the temperature of the heat exchange medium of the range extender, adjust the flow rate of the range extender heat exchange circuit and / or the radiator fan speed to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery.

[0015] In this embodiment, the heat exchange capacity of the range extender's heat exchange circuit can be adjusted by adjusting the flow rate of the range extender's heat exchange circuit and / or the radiator's fan speed. The amount of heat exchange capacity that needs to be adjusted can be accurately determined based on the battery temperature and the temperature of the range extender's heat exchange medium, so as to dissipate heat from the battery more accurately.

[0016] In some possible implementations, the controller is configured to: During charging, in response to the fulfillment of the second trigger condition, the charger heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger.

[0017] In this embodiment, under charging conditions, if the second triggering condition is determined to be met, the controller can control the charger heat exchange circuit to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger, so as to make full use of the heat exchange capacity of the range extender heat exchange circuit, improve the heat dissipation effect on the charger, and keep the temperature of the charger within a reasonable range.

[0018] In some possible implementations, the controller is configured to: During charging, the charger temperature and the start-up status of the range extender are obtained. If the charger temperature is greater than the charger temperature threshold and the range extender is in the off state, the second trigger condition is determined to be met.

[0019] In this embodiment, during charging, the charger temperature can be detected, and the start-up status of the range extender can be determined. If the charger temperature is greater than the charger temperature threshold and the range extender is not started, it is determined that the heat dissipation capacity of the charger heat exchange circuit is insufficient, and the range extender heat exchange circuit is in an idle state. It can be determined that the second trigger condition is met, so that the range extender heat exchange circuit can be connected to assist the charger heat exchange circuit in heat dissipation, thereby improving the heat dissipation capacity and reducing the charger temperature.

[0020] In some possible implementations, the controller is configured to: The charger temperature and the heat exchange medium temperature of the range extender are obtained. Based on the charger temperature and the heat exchange medium temperature of the range extender, adjust the flow rate of the range extender heat exchange circuit and / or the radiator fan speed to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger.

[0021] In this embodiment, the heat exchange capacity of the range extender's heat exchange circuit can be adjusted by adjusting the flow rate of the range extender's heat exchange circuit and / or the radiator's fan speed. The amount of heat exchange capacity that needs to be adjusted can be accurately determined based on the charger temperature and the range extender's heat exchange medium temperature, so as to more accurately dissipate heat from the charger.

[0022] In some possible implementations, the controller is configured to: Under driving conditions, in response to the fulfillment of the third triggering condition, the charger heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

[0023] In this embodiment, under driving conditions, if the third triggering condition is determined to be met, the controller can control the charger heat exchange circuit to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender, so as to make full use of the heat exchange capacity of the charger heat exchange circuit, improve the heat dissipation effect on the range extender, and keep the temperature of the range extender within a reasonable range.

[0024] In some possible implementations, the controller is configured to: Under driving conditions, the range extender temperature and the charger startup status are obtained; If the range extender temperature is greater than the range extender temperature threshold and the charger is in an unstarted state, then the third trigger condition is determined to be met.

[0025] In this embodiment, under driving conditions, the range extender temperature can be detected and the charger's startup status can be determined. If the range extender temperature is greater than the range extender temperature threshold and the charger's startup status is not started, it is determined that the heat dissipation capacity of the range extender's heat exchange circuit is insufficient and the charger's heat exchange circuit is in an idle state. It can be determined that the third triggering condition is met so that the charger's heat exchange circuit can be connected to assist the range extender's heat exchange circuit in heat dissipation, thereby improving the heat dissipation capacity and reducing the range extender temperature.

[0026] In some possible implementations, the controller is configured to: The range extender temperature and the charger heat exchange medium temperature are obtained. Based on the temperature of the range extender and the temperature of the heat exchange medium of the charger, adjust the flow rate of the charger heat exchange circuit and / or the radiator fan speed to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

[0027] In this embodiment, the heat exchange capacity of the charger's heat exchange circuit can be adjusted by adjusting the flow rate of the charger's heat exchange circuit and / or the fan speed of the radiator. The amount of heat exchange capacity that needs to be adjusted can be accurately determined based on the range extender temperature and the temperature of the charger's heat exchange medium, so as to more accurately dissipate heat from the range extender.

[0028] According to a second aspect of the present disclosure, a vehicle is provided, including the vehicle thermal management system described in the first aspect of the present disclosure.

[0029] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The system can connect the range extender's heat exchange circuit and the battery's heat exchange circuit via a heat exchange device to achieve coordinated heat dissipation between the two circuits, improving the heat dissipation effect on the battery. It can also connect the range extender's heat exchange circuit and the charger's heat exchange circuit via a heat exchange device to achieve coordinated heat dissipation between the two circuits, improving the heat dissipation effect on either the charger or the range extender. This allows for full utilization of the heat dissipation capacity of each heat exchange circuit in the thermal management system. When a heat exchange circuit is idle or under low load, its heat dissipation capacity can be dynamically reused for heat exchange circuits under high heat load, achieving coordinated heat dissipation among the various heat exchange circuits and thus improving the system's heat dissipation capacity. This enables the on-board charger and battery to be cooled to a reasonable range during fast charging, ensuring charging speed and extending the lifespan of the on-board charger and battery.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0032] Figure 1 This is a schematic diagram of a vehicle thermal management system, shown under certain circumstances.

[0033] Figure 2 This is a schematic diagram illustrating another vehicle thermal management system based on certain scenarios.

[0034] Figure 3 This is a flowchart illustrating the temperature monitoring process based on certain scenarios.

[0035] Figure 4 It is a flowchart of control instructions shown according to certain situations.

[0036] Figure 5 This is a heat exchange flow diagram of a heat exchange device shown under certain circumstances.

[0037] Figure 6 This is a heat exchange flow diagram of the range extender heat exchange circuit, shown according to certain conditions.

[0038] Figure 7 This is a timing diagram of vehicle thermal management shown under certain conditions.

[0039] Figure 8 This is a block diagram illustrating a vehicle according to an exemplary embodiment. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0041] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0042] With the increasing popularity of new energy vehicles, users' demand for charging speed is growing, and fast charging can significantly shorten the charging time. However, during high-power fast charging, the on-board charger and power battery pack generate a lot of heat. If the heat cannot be dissipated in time, it will affect the charging efficiency and damage the on-board charger and battery.

[0043] In related technologies, when performing high-power fast charging, the on-board charger and the power battery pack generate a lot of heat, causing the temperature of the on-board charger and the power battery pack to be too high. In order to ensure charging safety, the charging power will be reduced, thereby affecting the charging efficiency. Moreover, the excessive temperature will affect the life of the charger and the battery.

[0044] To overcome the problems existing in related technologies, this disclosure provides a vehicle thermal management system and a vehicle that can fully utilize the heat dissipation capacity of each heat exchange circuit in the thermal management system. When a heat exchange circuit is idle or under low load, its heat dissipation capacity can be dynamically reused for heat exchange circuits under high heat load, so as to achieve coordinated heat dissipation among the heat exchange circuits and improve the system's heat dissipation capacity. This allows the temperature of the on-board charger and battery to be reduced to a reasonable range during fast charging of the vehicle, ensuring charging speed and extending the service life of the on-board charger and battery.

[0045] Figure 1 This is a schematic diagram illustrating a vehicle thermal management system based on certain scenarios. For example... Figure 1 As shown, the vehicle thermal management system may include: The range extender heat exchange circuit is used for thermal management of the range extender. The range extender heat exchange circuit includes a range extender heat dissipation device. Battery heat exchange circuit, used for battery thermal management; The charger heat exchange circuit is used for the thermal management of the charger. A heat exchange device is connected to the range extender heat exchange circuit, the battery heat exchange circuit, and the charger heat exchange circuit respectively, so that the battery heat exchange circuit and / or the charger heat exchange circuit can exchange heat with the range extender heat exchange circuit.

[0046] In this embodiment, the vehicle thermal management system is located within the vehicle, which can be a range-extended vehicle. The heat exchange device enables heat exchange without the heat exchange media in the two heat exchange circuits mixing. The range extender heat exchange circuit manages the range extender's heat by allowing the flowing heat exchange media to remove heat from the range extender, thereby reducing its temperature. This circuit includes a range extender cooling device that dissipates heat from the absorbed heat in the heat exchange media. The battery heat exchange circuit manages the battery's heat, which can include a power battery. The flowing heat exchange media removes heat from the battery, reducing its temperature. The charger heat exchange circuit manages the charger's heat by allowing the flowing heat exchange media to remove heat from the charger, thereby reducing its temperature.

[0047] The range extender heat exchange circuit and the battery heat exchange circuit can both be connected to a heat exchange device. This allows for heat exchange between the two circuits, enabling assisted heat dissipation and improving overall cooling capacity. Similarly, the charger heat exchange circuit can also be connected to a heat exchange device, again facilitating heat exchange between the range extender and charger circuits and improving overall cooling capacity.

[0048] The system can connect the range extender's heat exchange circuit and the battery's heat exchange circuit via a heat exchange device to achieve coordinated heat dissipation between the two circuits, improving the heat dissipation effect on the battery. It can also connect the range extender's heat exchange circuit and the charger's heat exchange circuit via the same device, achieving coordinated heat dissipation between the two circuits and improving the heat dissipation effect on either the charger or the range extender. This allows for full utilization of the heat dissipation capacity of each heat exchange circuit in the thermal management system. When a heat exchange circuit is idle or under low load, its heat dissipation capacity can be dynamically reused for heat exchange circuits under high heat load, achieving coordinated heat dissipation among the heat exchange circuits and improving the system's heat dissipation effect. This enables the on-board charger and battery to be kept within a reasonable temperature range during fast charging, ensuring charging speed and extending the lifespan of the on-board charger and battery.

[0049] In some possible implementations, the heat exchange device may include a heat exchanger, which may be an integrated heat exchanger. That is, an integrated heat exchanger can be connected to the range extender heat exchange circuit, the battery heat exchange circuit, and the charger heat exchange circuit respectively to achieve heat exchange between the battery heat exchange circuit and / or the charger heat exchange circuit and the range extender heat exchange circuit, thereby saving space and cost.

[0050] Figure 2 This is a schematic diagram illustrating another vehicle thermal management system based on certain scenarios. For example... Figure 2 As shown, in some possible implementations, the heat exchange device includes a first heat exchange section and a second heat exchange section; The battery heat exchange circuit is connected to the range extender heat exchange circuit through the first heat exchange section, and the battery heat exchange circuit exchanges heat with the range extender heat exchange circuit through the first heat exchange section; the charger heat exchange circuit is connected to the range extender heat exchange circuit through the second heat exchange section, and the charger heat exchange circuit exchanges heat with the range extender heat exchange circuit through the second heat exchange section.

[0051] In this embodiment, the heat exchange device may include a first heat exchange section and a second heat exchange section, wherein the first heat exchange section may be a first heat exchanger and the second heat exchange section may be a second heat exchanger. The first heat exchange section can connect the range extender heat exchange circuit and the battery heat exchange circuit, and the second heat exchange section can connect the range extender heat exchange circuit and the charger heat exchange circuit, so as to achieve coordinated heat dissipation between the range extender heat exchange circuit and the battery heat exchange circuit, and between the range extender heat exchange circuit and the charger heat exchange circuit, respectively.

[0052] The first heat exchange section may include a first heat exchange path and a second heat exchange path. The first heat exchange path and the second heat exchange path are independent but can achieve heat exchange. The range extender heat exchange circuit can be connected to the first heat exchange path to form a new circuit so that the heat exchange medium in the range extender heat exchange circuit can flow through the first heat exchange path. The battery heat exchange circuit can be connected to the second heat exchange path to form a new circuit so that the heat exchange medium in the battery heat exchange circuit can flow through the second heat exchange path. Thus, the heat exchange between the battery heat exchange circuit and the range extender heat exchange circuit can be achieved through the heat exchange between the heat exchange medium in the first heat exchange path and the heat exchange medium in the second heat exchange path.

[0053] The second heat exchange section may include a third heat exchange path and a fourth heat exchange path. The third and fourth heat exchange paths are independent but can achieve heat exchange. The range extender heat exchange circuit can be connected to the third heat exchange path to form a new circuit, so that the heat exchange medium in the range extender heat exchange circuit can flow through the third heat exchange path. The charger heat exchange circuit can be connected to the fourth heat exchange path to form a new circuit, so that the heat exchange medium in the charger heat exchange circuit can flow through the fourth heat exchange path. Thus, the heat exchange between the charger heat exchange circuit and the range extender heat exchange circuit can be achieved through the heat exchange between the heat exchange medium in the third heat exchange path and the heat exchange medium in the fourth heat exchange path.

[0054] Optionally, both the first heat exchange section and the second heat exchange section can be plate heat exchangers.

[0055] Optionally, the range extender heat exchange circuit may include a heat exchange medium, a range extender water jacket, a range extender water pump, and a range extender cooling device. The range extender water jacket is connected to the range extender water pump, the range extender water pump is connected to the range extender cooling device, and the range extender cooling device is connected to the range extender water jacket. The range extender water pump drives the heat exchange medium to the range extender water jacket, where it absorbs heat from the range extender and then flows to the range extender cooling device for heat dissipation. The cooled heat from the heat exchange medium then flows back to the range extender water pump to achieve circulation. The range extender water jacket may also be connected to the input end of a first heat exchange path, and the range extender cooling device may be connected to the output end of the first heat exchange path. The range extender water jacket may also be connected to the input end of a third heat exchange path, and the range extender cooling device may be connected to the output end of the third heat exchange path.

[0056] The battery heat exchange circuit may include a heat exchange medium, a battery cooling plate, a battery water pump, and a battery heat dissipation device. The battery water pump is connected to the battery cooling plate, the battery cooling plate is connected to the battery heat dissipation device, and the battery heat dissipation device is connected to the battery water pump. The battery water pump drives the heat exchange medium to absorb heat from the battery and then flows to the battery heat dissipation device for cooling. The cooled heat exchange medium then flows back to the battery water pump to complete the cycle. The battery cooling plate may also be connected to the input end of a second heat exchange path, and the battery heat dissipation device may also be connected to the output end of the second heat exchange path. This enables heat exchange between the battery heat exchange circuit and the range extender heat exchange circuit.

[0057] The charger heat exchange circuit may include a heat exchange medium, a charger module, a charger water pump, and a charger heat dissipation device. The charger module is connected to the charger water pump, the charger module is connected to the charger heat dissipation device, and the charger heat dissipation device is connected to the charger water pump. The charger water pump drives the heat exchange medium to absorb heat from the charger and then flows to the charger heat dissipation device for cooling. The cooled heat exchange medium then flows back to the charger water pump to complete the cycle. The charger module may also be connected to the input end of a fourth heat exchange path, and the charger heat dissipation device may also be connected to the output end of the fourth heat exchange path. This enables heat exchange between the charger heat exchange circuit and the range extender heat exchange circuit.

[0058] In some possible implementations, the system further includes a controller, which is controllably connected to the heat exchange device, the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit, respectively. The controller is configured to: In charging or driving conditions, in response to meeting the triggering conditions corresponding to the target heat exchange circuit, the corresponding cooperating heat exchange circuit is controlled to perform cooperative heat dissipation on the target heat exchange circuit. The target heat exchange circuit includes at least one of the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit.

[0059] In this embodiment, under charging or driving conditions, the controller can perform load detection on the battery heat exchange circuit, charger heat exchange circuit, and range extender heat exchange circuit. It can detect target heat exchange circuits under high heat load and those in idle or low load states. This allows the heat dissipation capacity of the idle or low load heat exchange circuit to be dynamically reused in the high heat load target heat exchange circuit when a heat exchange circuit is idle or low load and a target heat exchange circuit under high heat load exists (i.e., when the triggering condition corresponding to the target heat exchange circuit is met). This achieves coordinated heat dissipation among the heat exchange circuits, thereby improving the system's heat dissipation capacity. Specifically, when the target heat exchange circuit includes the battery heat exchange circuit and / or the charger heat exchange circuit, its corresponding coordinated heat exchange circuit may include the range extender heat exchange circuit; when the target heat exchange circuit includes the range extender heat exchange circuit, its corresponding coordinated heat exchange circuit may include the charger heat exchange circuit.

[0060] In some possible implementations, the controller is configured as follows: During charging, in response to the fulfillment of the first trigger condition, the battery heat exchange circuit is connected to the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery.

[0061] In this embodiment, during charging, if the first trigger condition is met, the controller can connect the battery heat exchange circuit to the range extender heat exchange circuit via a heat exchange device. This allows the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery, thus fully utilizing the heat exchange capacity of the range extender heat exchange circuit, improving the heat dissipation effect on the battery, and keeping the battery temperature within a reasonable range. Here, the charging condition can be fast charging, meaning the charging power is greater than a preset fast charging power, such as 50kW or 120kW. During fast charging, both the charger and the battery generate a large amount of heat, which may lead to excessively high temperatures in both.

[0062] In some possible implementations, the controller is configured as follows: During charging, the battery temperature and the start-up status of the range extender are obtained; if the battery temperature is greater than the battery temperature threshold and the start-up status of the range extender is not started, the first trigger condition is determined to be met.

[0063] In this embodiment, during charging, the battery temperature can be detected. The battery temperature can be obtained through a temperature sensor installed inside the battery, and the start-up status of the range extender can be determined. If the battery temperature is greater than the battery temperature threshold (for example, the battery temperature threshold can be 40°C), and the start-up status of the range extender is not started, it is determined that the heat dissipation capacity of the battery heat exchange circuit is insufficient, resulting in the battery temperature being too high, and the range extender heat exchange circuit is in an idle state. It can be determined that the first trigger condition is met, so that the range extender heat exchange circuit can be connected to assist the battery heat exchange circuit in heat dissipation, thereby improving the heat dissipation capacity and reducing the battery temperature.

[0064] In some possible implementations, the controller is configured as follows: The system acquires the battery temperature and the range extender's heat exchange medium temperature; based on the battery temperature and the range extender's heat exchange medium temperature, it adjusts the flow rate of the range extender's heat exchange circuit and / or the radiator fan speed to control the range extender's heat exchange circuit to assist the battery's heat exchange circuit in dissipating heat from the battery.

[0065] In this embodiment, the heat exchange capacity of the range extender's heat exchange circuit can be adjusted by regulating the flow rate and / or radiator fan speed. The amount of heat exchange capacity adjustment required can be accurately determined based on the battery temperature and the temperature of the range extender's heat exchange medium, allowing for more accurate battery cooling. Optionally, the amount of heat exchange capacity adjustment required can be determined based on the difference between the battery temperature and the range extender's heat exchange medium temperature, thereby determining the flow rate and / or radiator fan speed of the range extender's heat exchange circuit. The flow rate and / or radiator fan speed of the range extender's heat exchange circuit are positively correlated with the cooling effect. During adjustment, when the battery temperature is lower than a first preset value (which can be 35°C), the flow rate of the range extender's heat exchange circuit can be reduced until the range extender water pump is shut off, effectively reducing the flow rate to zero, allowing the battery heat exchange circuit to cool the battery independently. This control can be achieved by sending control commands to the solenoid valves of the range extender water pump, the range extender radiator, and the first heat exchange section. During the adjustment process, if the battery temperature remains constant or continues to rise, the flow rate of the range extender's heat exchange circuit can be further increased. If the battery temperature stabilizes within a safe range, the flow rate of the range extender's heat exchange circuit should be maintained.

[0066] In some possible implementations, the controller is configured as follows: During charging, in response to the fulfillment of the second trigger condition, the charger's heat exchange circuit is connected to the range extender's heat exchange circuit via a heat exchange device, so as to control the range extender's heat exchange circuit to assist the charger's heat exchange circuit in dissipating heat from the charger.

[0067] In this embodiment, during charging, if the second trigger condition is met, the controller can connect the charger's heat exchange circuit to the range extender's heat exchange circuit via a heat exchange device. This allows the range extender's heat exchange circuit to assist the charger's heat exchange circuit in dissipating heat from the charger, thus fully utilizing the range extender's heat exchange circuit's capacity and improving the charger's cooling effect, keeping the charger's temperature within a reasonable range. Here, the charging condition can be fast charging, meaning the charging power exceeds a preset fast charging power, such as 50kW or 120kW. During fast charging, both the charger and the battery generate a significant amount of heat, which may lead to overheating of both.

[0068] In some possible implementations, the controller is configured as follows: During charging, the charger temperature and the range extender's start-up status are obtained; if the charger temperature is greater than the charger temperature threshold and the range extender's start-up status is not started, the second trigger condition is determined to be met.

[0069] In this embodiment, during charging, the charger temperature can be detected, and the start-up status of the range extender can be determined. If the charger temperature is greater than the charger temperature threshold (for example, the battery temperature threshold can be 50°C), and the range extender is not started, it is determined that the heat dissipation capacity of the charger's heat exchange circuit is insufficient, resulting in the charger temperature being too high, and the range extender's heat exchange circuit is in an idle state. It can be determined that the second trigger condition is met, so that the range extender's heat exchange circuit can be connected to assist the charger's heat exchange circuit in heat dissipation, thereby improving the heat dissipation capacity and reducing the charger temperature.

[0070] In some possible implementations, the controller is configured as follows: The charger temperature and the range extender heat exchange medium temperature are obtained; based on the charger temperature and the range extender heat exchange medium temperature, the flow rate of the range extender heat exchange circuit and / or the radiator fan speed are adjusted to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger.

[0071] In this embodiment, the heat exchange capacity of the range extender's heat exchange circuit can be adjusted by regulating the flow rate and / or radiator fan speed. The amount of heat exchange capacity adjustment required can be accurately determined based on the charger temperature and the range extender's heat exchange medium temperature, allowing for more accurate heat dissipation from the charger. Optionally, the amount of heat exchange capacity adjustment required can be determined based on the difference between the charger temperature and the range extender's heat exchange medium temperature, thereby determining the flow rate and / or radiator fan speed of the range extender's heat exchange circuit. The flow rate and / or radiator fan speed of the range extender's heat exchange circuit are positively correlated with the heat dissipation effect. During the adjustment process, when the charger temperature is lower than a second preset value (which can be 45°C), the flow rate of the range extender's heat exchange circuit can be reduced until the range extender water pump is shut off, effectively reducing the flow rate to zero, allowing the charger's heat exchange circuit to dissipate heat from the charger independently. This control can be achieved by sending control commands to the solenoid valves of the range extender water pump, the range extender radiator, and the second heat exchange section. During the adjustment process, if the charger temperature remains unchanged or continues to rise, the flow rate of the range extender's heat exchange circuit can be further increased. If the charger temperature stabilizes within a safe range, the flow rate of the range extender's heat exchange circuit should be maintained.

[0072] Figure 3 This is a flowchart illustrating the temperature monitoring process based on various scenarios. For example... Figure 3 As shown, the following steps may be included: In step S301, the temperature sensor is initialized.

[0073] In step S302, temperature is monitored cyclically.

[0074] In step S303, the battery temperature is obtained.

[0075] In step S304, the charger temperature is obtained.

[0076] In step S305, the temperature of the range extender is obtained.

[0077] In step S306, it is determined whether the battery temperature is greater than the battery temperature threshold. If not, step S308 is executed; if yes, step S309 is executed.

[0078] In step S307, it is determined whether the charger temperature is greater than the charger temperature threshold. If not, step S308 is executed; if yes, step S310 is executed.

[0079] In step S308, the collaboration is not triggered temporarily.

[0080] In step S309, the battery is marked as being at a high temperature.

[0081] In step S310, the charger is marked as high temperature.

[0082] In step S311, a high-temperature signal is sent to the controller.

[0083] Figure 4 It is a control instruction flowchart shown according to certain situations. For example... Figure 4 As shown, the following steps may be included: In step S401, a temperature monitoring signal is received.

[0084] In step S402, it is determined whether there is a high temperature signal. If yes, step S403 is executed; otherwise, step S410 is executed.

[0085] In step S403, it is determined whether the range extender is started. If not, step S404 is executed; if yes, step S410 is executed.

[0086] In step S404, the range extender water pump is started.

[0087] In step S405, the corresponding heat exchanger solenoid valve is opened.

[0088] In step S406, the flow rate is dynamically adjusted.

[0089] In step S407, temperature changes are continuously monitored.

[0090] In step S408, does the temperature drop back to the safe threshold? If yes, proceed to step S409; otherwise, return to step S406.

[0091] In step S409, the range extender water pump and solenoid valve are shut off.

[0092] In step S4010, no intervention is performed.

[0093] Figure 5 This is a heat exchange flow diagram of a heat exchange device shown under certain circumstances. For example... Figure 5 As shown, the following steps may be included: In step S501, the range extender heat exchange circuit is started.

[0094] In step S502, the range extender heat exchange medium enters the heat exchange device, that is, it enters the heat exchange device.

[0095] In step S503, heat exchange is performed.

[0096] In step S504, the high-temperature source is the battery.

[0097] In step S505, the high-temperature source is the charger.

[0098] In step S506, heat is transferred to the range extender heat exchange circuit.

[0099] In step S507, the heated heat exchange medium of the range extender flows to the range extender radiator.

[0100] In step S508, the range extender radiator is cooled.

[0101] In step S509, the cooled range extender heat exchange medium is returned to the cycle, returning to step S502.

[0102] Figure 6 This is a heat exchange flow diagram of the range extender heat exchange circuit, shown according to certain conditions. Figure 7 This is a timing diagram illustrating vehicle thermal management based on certain scenarios. For example... Figure 6 and Figure 7 As shown, the following steps may be included: In step S601, the controller's instructions are received.

[0103] In step S602, the command type is determined. If it is to start the water pump, step S603 is executed; if it is to adjust the flow rate, step S609 is executed; if it is to shut down the system, step S610 is executed. The system here can be the range extender heat exchange circuit.

[0104] In step S603, the range extender water pump is controlled to operate at a specified flow rate.

[0105] In step S604, the range extender heat exchange medium flows out from the range extender water jacket and is pressurized by the range extender water pump.

[0106] In step S605, heat exchange is performed using a heat exchange device.

[0107] In step S606, the heated heat exchange medium flows to the range extender radiator.

[0108] In step S607, the range extender radiator performs heat dissipation.

[0109] In step S608, the cooled heat exchange medium is returned to the range extender water jacket.

[0110] In step S609, the range extender water pump control signal is adjusted.

[0111] In step S610, the range extender water pump is notified to start.

[0112] In step S611, the system goes into standby mode. This allows the water pump and radiator fan in the range extender's heat exchange circuit to be shut down.

[0113] In some possible implementations, the controller is configured as follows: Under driving conditions, in response to the fulfillment of the third triggering condition, the charger heat exchange circuit is connected to the range extender heat exchange circuit through the heat exchange device, so as to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

[0114] In this embodiment, under driving conditions, if the third triggering condition is met, the controller can connect the charger's heat exchange circuit to the range extender's heat exchange circuit via a heat exchange device. This allows the charger's heat exchange circuit to assist the range extender's heat exchange circuit in dissipating heat from the range extender, thus fully utilizing the charger's heat exchange circuit's capacity and improving the heat dissipation effect on the range extender, keeping its temperature within a reasonable range. During driving conditions, the charger is not operating, meaning the charger's heat exchange circuit is idle.

[0115] In some possible implementations, the controller is configured as follows: Under driving conditions, the range extender temperature and the charger start-up status are obtained; if the range extender temperature is greater than the range extender temperature threshold and the charger start-up status is not started, the third trigger condition is determined to be met.

[0116] In this embodiment, under driving conditions, the range extender temperature can be detected, and the charging unit's startup status can be determined. If the range extender temperature is greater than the range extender temperature threshold (for example, the range extender temperature threshold can be 100°C), and the charging unit's startup status is not started, it is determined that the heat dissipation capacity of the range extender's heat exchange circuit is insufficient, resulting in the range extender's excessively high temperature. Furthermore, the charging unit's heat exchange circuit is in an idle state, and it can be determined that the third trigger condition is met. This allows the charging unit's heat exchange circuit to be connected to assist the range extender's heat exchange circuit in heat dissipation, thereby improving heat dissipation capacity and reducing the range extender temperature.

[0117] In some possible implementations, the controller is configured as follows: The range extender temperature and the charger heat exchange medium temperature are obtained; based on the range extender temperature and the charger heat exchange medium temperature, the flow rate of the charger heat exchange circuit and / or the radiator fan speed are adjusted to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

[0118] In this embodiment, the heat exchange capacity of the charger's heat exchange circuit can be adjusted by regulating the flow rate and / or the radiator fan speed. The amount of heat exchange capacity adjustment required can be accurately determined based on the range extender temperature and the charger's heat exchange medium temperature, allowing for more accurate heat dissipation for the range extender. Optionally, the amount of heat exchange capacity adjustment required can be determined based on the difference between the range extender temperature and the temperature of the heat exchange medium in the charger circuit, thereby determining the flow rate and / or radiator fan speed of the charger's heat exchange circuit. The flow rate and / or radiator fan speed of the charger's heat exchange circuit are positively correlated with the heat dissipation effect. During the adjustment process, when the range extender temperature is lower than a third preset value (which can be 80°C), the flow rate of the charger's heat exchange circuit can be reduced until the range extender water pump is shut off, i.e., the flow rate of the charger's heat exchange circuit is adjusted to 0, allowing the range extender's heat exchange circuit to dissipate heat for the range extender independently. This control can be achieved by sending control commands to the solenoid valves of the charger water pump, the charger radiator, and the second heat exchange section. During the adjustment process, if the range extender temperature remains constant or continues to rise, the flow rate of the charger's heat exchange circuit can be further increased. If the range extender temperature stabilizes within a safe range, the flow rate of the charger's heat exchange circuit should be maintained.

[0119] The water pump flow rate is dynamically adjusted via PWM (Pulse Width Modulation) signals (e.g., 15L / min corresponds to a 15% duty cycle, and 20L / min corresponds to a 20% duty cycle); the radiator fan can further assist in heat dissipation based on the temperature of the heat exchange medium; by default, the system is in standby mode, and both the water pump and fan are turned off.

[0120] This disclosure also provides a vehicle including the vehicle thermal management system described in the above embodiments.

[0121] Figure 8 This is a block diagram illustrating a vehicle 800 according to an exemplary embodiment. For example, vehicle 800 may be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicle. Vehicle 800 may have driver assistance functions.

[0122] Reference Figure 8The vehicle 800 may include various subsystems, such as an infotainment system 810, a perception system 820, a decision control system 830, a drive system 840, and a computing platform 850. The vehicle 800 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and each component of the vehicle 800 can be interconnected via wired or wireless means.

[0123] In some embodiments, the infotainment system 810 may include a communication system, an entertainment system, and a navigation system, etc.

[0124] The perception system 820 may include several sensors for sensing information about the environment surrounding the vehicle 800. For example, the perception system 820 may include a global positioning system (which may be GPS, BeiDou, or other positioning systems), an inertial measurement unit (IMU), lidar, millimeter-wave radar, ultrasonic radar, and a camera device.

[0125] The decision control system 830 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0126] The drive system 840 may include components that provide powered motion to the vehicle 800. In one embodiment, the drive system 840 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0127] Some or all of the functions of the vehicle 800 are controlled by a computing platform 850. The computing platform 850 may include at least one processor 851 and a memory 852, the processor 851 being able to execute instructions 853 stored in the memory 852.

[0128] The processor 851 can be any conventional processor, such as a commercially available CPU. The processor may also include graphics processing units (GPUs), field-programmable gate arrays (FPGAs), systems on chips (SoCs), application-specific integrated circuits (ASICs), or combinations thereof.

[0129] The memory 852 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0130] In addition to instruction set 853, memory 852 can also store data, such as road maps, route information, vehicle position, direction, speed, and other data. The data stored in memory 852 can be used by computing platform 850.

[0131] In this embodiment of the disclosure, the processor 851 can execute instruction 853 to perform the control of the controller described above.

[0132] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0133] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0134] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0135] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0136] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

[0137] It should be understood that other aspects may be utilized and structural or logical changes may be made without departing from the concepts of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0138] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0139] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A vehicle thermal management system, characterized in that, include: The range extender heat exchange circuit is used for thermal management of the range extender, and the range extender heat exchange circuit includes a range extender heat dissipation device; Battery heat exchange circuit, used for battery thermal management; The charger heat exchange circuit is used for the thermal management of the charger. A heat exchange device is provided, which is connected to the range extender heat exchange circuit, the battery heat exchange circuit, and the charger heat exchange circuit respectively for heat exchange, so that the battery heat exchange circuit and / or the charger heat exchange circuit can exchange heat with the range extender heat exchange circuit.

2. The vehicle thermal management system according to claim 1, characterized in that, The heat exchange device includes a first heat exchange section and a second heat exchange section; The battery heat exchange circuit is connected to the range extender heat exchange circuit through the first heat exchange part, and the battery heat exchange circuit exchanges heat with the range extender heat exchange circuit through the first heat exchange part. The charger heat exchange circuit is connected to the range extender heat exchange circuit through the second heat exchange part, and the charger heat exchange circuit exchanges heat with the range extender heat exchange circuit through the second heat exchange part.

3. The vehicle thermal management system according to claim 1, characterized in that, The system also includes a controller, which is connected to the heat exchange device, the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit, respectively. The controller is configured to: In charging or driving conditions, in response to the fulfillment of the triggering condition corresponding to the target heat exchange circuit, the corresponding cooperating heat exchange circuit is controlled to perform cooperative heat dissipation on the target heat exchange circuit. The target heat exchange circuit includes at least one of the battery heat exchange circuit, the charger heat exchange circuit, and the range extender heat exchange circuit.

4. The vehicle thermal management system according to claim 3, characterized in that, The controller is configured to: During charging, in response to the fulfillment of the first trigger condition, the battery heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery.

5. The vehicle thermal management system according to claim 4, characterized in that, The controller is configured to: During charging, the battery temperature of the battery and the start-up status of the range extender are obtained; If the battery temperature is greater than the battery temperature threshold and the range extender is in an inactive state, the first trigger condition is determined to be met.

6. The vehicle thermal management system according to claim 4, characterized in that, The controller is configured to: The battery temperature of the battery and the heat exchange medium temperature of the range extender are obtained; Based on the battery temperature and the temperature of the heat exchange medium of the range extender, adjust the flow rate of the range extender heat exchange circuit and / or the radiator fan speed to control the range extender heat exchange circuit to assist the battery heat exchange circuit in dissipating heat from the battery.

7. The vehicle thermal management system according to claim 3, characterized in that, The controller is configured to: During charging, in response to the fulfillment of the second trigger condition, the charger heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger.

8. The vehicle thermal management system according to claim 7, characterized in that, The controller is configured to: Under charging conditions, the charger temperature and the start-up status of the range extender are obtained; If the charger temperature is greater than the charger temperature threshold and the range extender is in the off state, the second trigger condition is determined to be met.

9. The vehicle thermal management system according to claim 7, characterized in that, The controller is configured to: The charger temperature and the heat exchange medium temperature of the range extender are obtained. Based on the charger temperature and the heat exchange medium temperature of the range extender, adjust the flow rate of the range extender heat exchange circuit and / or the radiator fan speed to control the range extender heat exchange circuit to assist the charger heat exchange circuit in dissipating heat from the charger.

10. The vehicle thermal management system according to claim 3, characterized in that, The controller is configured to: Under driving conditions, in response to the fulfillment of the third triggering condition, the charger heat exchange circuit is controlled to connect with the range extender heat exchange circuit through the heat exchange device, so as to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

11. The vehicle thermal management system according to claim 10, characterized in that, The controller is configured to: Under driving conditions, the range extender temperature and the charger startup status are obtained; If the range extender temperature is greater than the range extender temperature threshold and the charger is in an unstarted state, then the third trigger condition is determined to be met.

12. The vehicle thermal management system according to claim 10, characterized in that, The controller is configured to: The range extender temperature and the charger heat exchange medium temperature are obtained. Based on the temperature of the range extender and the temperature of the heat exchange medium of the charger, adjust the flow rate of the charger heat exchange circuit and / or the radiator fan speed to control the charger heat exchange circuit to assist the range extender heat exchange circuit in dissipating heat from the range extender.

13. A vehicle, characterized in that, The vehicle thermal management system includes any one of claims 1-12.

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