A thermal management architecture for passenger compartment and battery heavy-duty trucks

Abstract

The present invention provides a thermal management architecture for the passenger compartment and battery-powered heavy-duty truck. The architecture features a refrigerant circuit, an electric drive circuit, and a heater circuit. The refrigerant circuit includes a plate heat exchanger, an electric compressor, a water-cooled condenser, an evaporator, and a blower. The electric drive circuit includes a motor, a three-way valve, a radiator, an electronic fan, an electric water pump, a radiator four-way valve, a battery four-way valve, a battery pack, a battery water pump, and a shutoff valve. The heater circuit includes a heater core, a blower, a heater water pump, a three-way proportional valve, a first heater check valve, and a battery check valve. This architecture utilizes both motor waste heat and a heat pump for heating. Based on the principle of energy management and allocation, it optimally utilizes the vehicle's waste heat, achieving energy recycling and minimizing range degradation. Simulation and testing have demonstrated a projected 10% improvement in winter range, bringing the vehicle's range to approximately 85% of its normal temperature range.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management of pure electric heavy-duty trucks, and in particular to a thermal management architecture for a passenger compartment and a battery heavy-duty truck model. Background Art

[0002] Pure electric heavy-duty trucks are now making up a growing portion of the heavy-duty truck market. The biggest pain point affecting electric vehicles is range. Winter air conditioning and battery heating are among the main culprits contributing to range degradation. Traditional PTC heaters can cause up to a 50% reduction in range. Traditional heat pumps, however, use electric compressors, which can limit this reduction to approximately 75%. Existing thermal management solutions for pure electric heavy-duty trucks include: Most currently available on the market utilize separate battery thermal management, electric drive thermal management, and air conditioning. This prevents efficient utilization of electric drive heat. The battery utilizes a separate motor and heating film, or PTC heating.

[0003] Disadvantages: The existing thermal management method causes a 50% reduction in battery life. Furthermore, the layout requires more parts and piping, increasing component costs and space usage, which in turn increases vehicle weight. The heating film method offers little benefit in heating the battery in extremely low temperatures. Summary of the Invention

[0004] In view of this, the problem to be solved by the present invention is to provide a thermal management architecture for a passenger compartment and a battery heavy-duty truck.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A thermal management architecture for a passenger compartment and a battery heavy truck includes a refrigerant circuit, an electric drive circuit, and a heating circuit. The refrigerant circuit includes a plate heat exchanger, an electric compressor, a water-cooled condenser, an evaporator, and a blower. The refrigerant outlet of the plate heat exchanger is connected to the input port of the electric compressor, the output port of the electric compressor is connected to the refrigerant inlet of the water-cooled condenser, the refrigerant outlet of the water-cooled condenser is respectively connected to the refrigerant inlet of the plate heat exchanger and the input port of the evaporator, and the output port of the evaporator is connected to the input port of the electric compressor; the electric drive circuit includes a motor, a three-way valve, a radiator, an electronic Fan, electric water pump, radiator four-way valve, battery four-way valve, battery pack, battery water pump, stop valve, the motor is used for heat dissipation of the motor, the output end of the motor is connected to the a port of the three-way valve, the b port of the three-way valve is connected to the input port of the radiator, the c port of the three-way valve and the output port of the radiator are both connected to the input port of the electric water pump, the output port of the electric water pump is connected to the c port of the radiator four-way valve, the d port of the radiator four-way valve is respectively connected to the input end of the motor and one end of the stop valve, the b port of the radiator four-way valve is connected to the hot water inlet of the plate heat exchanger, and the hot water outlet of the plate heat exchanger is connected to the hot water outlet of the plate heat exchanger. Connected to the c port of the battery four-way valve, the b port of the battery four-way valve is connected to the a port of the radiator four-way valve, the d port of the battery four-way valve is connected to the input end of the battery pack, the output end of the battery pack is connected to the input port of the battery water pump, and the electronic fan is used to accelerate the heat dissipation of the radiator; the warm air circuit includes a warm air core, a blower, a warm air water pump, a three-way proportional valve, a first warm air one-way valve, and a battery one-way valve. The input end of the warm air core is connected to the cold water outlet of the water-cooled condenser, the output end of the warm air core is connected to the input port of the warm air water pump, and the output port of the warm air water pump is connected to the a port of the three-way proportional valve. The pipe between the output port of the wind and water pump and the port a of the three-way proportional valve is connected to the pipe between the output end of the motor and the port a of the three-way valve to form a water circuit intersection. The port b of the three-way proportional valve is connected to the input port of the first warm air one-way valve. The output port of the first warm air one-way valve is connected to the other end of the stop valve. The port a of the battery four-way valve and the cold water inlet of the water-cooled condenser are connected to the output port of the first warm air one-way valve. The port c of the three-way proportional valve is connected to the input end of the battery one-way valve. The output end of the battery one-way valve is connected to the input end of the battery pack. The blower is used to send out the heat emitted by the heater core.

[0007] In the present invention, preferably, the electric drive circuit further includes a power distribution unit and a control unit, the power distribution unit is electrically connected to the control unit, and the control unit is electrically connected to the motor.

[0008] In the present invention, preferably, the electric drive circuit further includes an expansion kettle, which is connected to a pipeline between the d port of the radiator four-way valve and the input end of the motor.

[0009] In the present invention, preferably, the output end of the motor is connected in series with a first temperature sensor, the input port of the electric water pump is connected in series with a second temperature sensor, the input end of the battery pack is connected in series with a third temperature sensor, and the output end of the battery pack is connected in series with a fourth temperature sensor. The first temperature sensor, the second temperature sensor, the third temperature sensor, and the fourth temperature sensor are all electrically connected to the control unit.

[0010] In the present invention, preferably, the warm air circuit further comprises a water heater, and the water heater is connected in series between the water circuit intersection and the warm air water pump.

[0011] In the present invention, preferably, the output port of the electric compressor is connected in series with a muffler.

[0012] In the present invention, preferably, a first temperature and pressure sensor is connected in series to the input port of the electric compressor, and a second temperature and pressure sensor is connected in series between the muffler and the refrigerant inlet of the water-cooled condenser, and the first temperature and pressure sensor and the second temperature and pressure sensor are both electrically connected to the control unit.

[0013] In the present invention, preferably, the input port of the evaporator is connected in series with an air-conditioning electronic expansion valve, and the refrigerant inlet of the plate heat exchanger is connected in series with a battery electronic expansion valve.

[0014] In the present invention, preferably, the electric drive circuit also includes a motor one-way valve, a motor throttle valve, a radiator throttle valve, a radiator one-way valve, and a second warm air one-way valve. The input end of the motor one-way valve is connected to the input end of the motor, the output end of the motor one-way valve is connected to one end of the motor throttle valve, the other end of the motor throttle valve is connected to the expansion kettle, one end of the radiator throttle valve is connected to the expansion kettle, the other end of the radiator throttle valve is respectively connected to the output end of the radiator one-way valve and the output end of the second warm air one-way valve, the input end of the radiator one-way valve is connected to the radiator, and the input end of the second warm air one-way valve is connected to the warm air core.

[0015] In the present invention, preferably, the output end of the warm air water pump is further connected in series with a water heater.

[0016] The advantages and positive effects of the present invention are:

[0017] (1) The motor waste heat and heat pump are used for joint heating. Based on the principle of energy management and distribution, the waste heat generated by the vehicle is optimally utilized to achieve energy recycling and minimize the attenuation of cruising range. Through simulation and experimental verification, it is expected to increase by 10%, so that the cruising range in winter can reach about 85% of that at normal temperature.

[0018] (2) Traditional heavy trucks use a separate thermal management unit for the battery, so the entire vehicle requires two sets of compressors, radiators, and electronic fans. The present invention adopts an integrated architecture, which can effectively save space and reduce weight. At the same time, it also greatly reduces the total number of parts and components, thereby reducing procurement costs.

[0019] (3) It can be used for platform development. The entire thermal management architecture can cover the air conditioning, battery and electric drive as an integrated architecture. With the corresponding interfaces reserved, it can also be used for other similar models. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the structure of a thermal management architecture of a passenger compartment and battery heavy-duty truck model of the present invention;

[0022] Figure 2 This is a schematic diagram of the integrated mode structure of the passenger compartment and battery heavy-duty truck thermal management architecture of the present invention;

[0023] Figure 3 It is a schematic diagram of the heat pump heating mode structure of a passenger compartment and battery heavy truck thermal management architecture of the present invention;

[0024] Figure 4 It is a schematic diagram of the electric drive waste heat heating structure of the passenger compartment and battery heavy truck model thermal management architecture of the present invention;

[0025] In the figure: 1- radiator throttle valve, 2- radiator one-way valve, 3- expansion kettle, 4- three-way valve, 5- radiator, 6- second temperature sensor, 7- second heater one-way valve, 8- electronic fan, 9- motor throttle valve, 10- motor one-way valve, 11- electric drive water pump, 12- power distribution unit, 13- control unit, 14- motor, 15- air conditioning electronic expansion valve, 16- liquid storage drying tank, 17- water-cooled condenser, 18- battery electronic expansion valve, 19- blower, 20- evaporator, 21- heater Wind core, 22-second temperature and pressure sensor, 23-plate heat exchanger, 24-muffler, 25-radiator four-way valve, 26-warm air water pump, 27-electric compressor, 28-first temperature and pressure sensor, 29-stop valve, 30-water heater, 31-battery four-way valve, 32-battery water pump, 33-first warm air one-way valve, 34-third temperature sensor, 35-battery pack, 36-fourth temperature sensor, 37-battery one-way valve, 38-three-way proportional valve, 39-first temperature sensor. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figures 1 to 4 As shown, the present invention provides a thermal management architecture for a passenger compartment and a battery heavy-duty truck, including a refrigerant circuit, an electric drive circuit, and a warm air circuit.

[0030] The refrigerant circuit includes a plate heat exchanger 23, an electric compressor 27, a water-cooled condenser 17, an evaporator 20, and a blower 19. The refrigerant outlet of the plate heat exchanger 23 is connected to the inlet of the electric compressor 27, and the output of the electric compressor 27 is connected to the refrigerant inlet of the water-cooled condenser 17. The refrigerant outlet of the water-cooled condenser 17 is connected to the refrigerant inlet of the plate heat exchanger 23 and the inlet of the evaporator 20, respectively. The output of the evaporator 20 is connected to the inlet of the electric compressor 27. To remove moisture from the refrigerant in the pipeline and filter out tiny impurities in the pipeline, the water-cooled condenser 17 is also connected to a liquid storage and drying tank 16.

[0031] The electric drive circuit includes a motor 14, a three-way valve 4, a radiator 5, an electronic fan 8, an electric water pump 11, a radiator four-way valve 25, a battery four-way valve 31, a battery pack 35, a battery water pump 32, and a stop valve 29. The motor 14 is used to dissipate heat from the motor 14. The output end of the motor 14 is connected to the port a of the three-way valve 4, the port b of the three-way valve 4 is connected to the input port of the radiator 5, the port c of the three-way valve 4 and the output port of the radiator 5 are both connected to the input port of the electric water pump 11, and the output port of the electric water pump 11 is connected to the port c of the radiator four-way valve 25. The radiator 5 is connected to the four-way valve 25. Port d of the radiator valve 25 is connected to the input of the motor 14 and one end of the shut-off valve 29. Port b of the radiator valve 25 is connected to the hot water inlet of the plate heat exchanger 23. The hot water outlet of the plate heat exchanger 23 is connected to port c of the battery four-way valve 31. Port b of the battery four-way valve 31 is connected to port a of the radiator valve 25. Port d of the battery four-way valve 31 is connected to the input of the battery pack 35. The output of the battery pack 35 is connected to the input of the battery water pump 32. The electronic fan 8 is used to accelerate the heat dissipation of the radiator 5. The shut-off valve 29 can control the heat from the motor 14 from entering the passenger compartment to heat the passenger compartment. The radiator valve 25 and the battery valve 31 can control the coolant flow, forming a series and parallel connection between the battery, electric drive, and passenger compartment. The valve opening can be adjusted according to different needs, realizing up to 19 thermal management modes.

[0032] The warm air circuit includes a warm air core 21, a blower 19, a warm air water pump 26, a three-way proportional valve 38, a first warm air one-way valve 33, and a battery one-way valve 37. The input end of the warm air core 21 is connected to the cold water outlet of the water-cooled condenser 17, the output end of the warm air core 21 is connected to the input port of the warm air water pump 26, the output port of the warm air water pump 26 is connected to the port a of the three-way proportional valve 38, the pipeline between the output port of the warm air water pump 26 and the port a of the three-way proportional valve 38 is connected to the pipeline between the output end of the motor 14 and the port a of the three-way valve 4 The water circuits are connected at a junction. Port b of the three-way proportional valve 38 is connected to the input of the first heater check valve 33. The output of the first heater check valve 33 is connected to the other end of the shut-off valve 29. Port a of the battery four-way valve 31 and the cold water inlet of the water-cooled condenser 17 are connected to the output of the first heater check valve 33. Port c of the three-way proportional valve 38 is connected to the input of the battery check valve 37. The output of the battery check valve 37 is connected to the input of the battery pack 35. The blower 19 is used to dissipate heat dissipated by the heater core 21. The three-way proportional valve 38 can transfer the heat of the warm air to the battery for heating, meeting the demanding operating conditions of air conditioning cooling and battery heating.

[0033] Preferably, the electric drive circuit further includes a power distribution unit 12 and a control unit 13 . The power distribution unit 12 is electrically connected to the control unit 13 , and the control unit 13 is electrically connected to the motor 14 for controlling the voltage and current supplied to the motor 14 .

[0034] Preferably, the electric drive circuit further includes an expansion kettle 3 , which is connected to a pipeline between the port d of the radiator four-way valve 25 and the input end of the motor 14 .

[0035] Preferably, the output end of the motor 14 is connected in series with a first temperature sensor 39, the input port of the electric water pump 11 is connected in series with a second temperature sensor 6, the input end of the battery pack 35 is connected in series with a third temperature sensor 34, and the output end of the battery pack 35 is connected in series with a fourth temperature sensor 36. The first temperature sensor 39, the second temperature sensor 6, the third temperature sensor 34, and the fourth temperature sensor 36 are all electrically connected to the control unit 13.

[0036] Preferably, the warm air circuit further includes a water heater 30 , which is connected in series between the water circuit intersection and the warm air water pump 26 .

[0037] Preferably, a muffler 24 is connected in series to the output port of the electric compressor 27 .

[0038] Preferably, a first temperature and pressure sensor 28 is connected in series to the input port of the electric compressor 27, and a second temperature and pressure sensor 22 is connected in series between the muffler 24 and the refrigerant inlet of the water-cooled condenser 17. The first temperature and pressure sensor 28 and the second temperature and pressure sensor 22 are both electrically connected to the control unit 13.

[0039] Preferably, the air conditioner electronic expansion valve 15 is connected in series to the input port of the evaporator 20 , and the battery electronic expansion valve 18 is connected in series to the refrigerant inlet of the plate heat exchanger 23 .

[0040] Preferably, the electric drive circuit also includes a motor one-way valve 10, a motor throttle valve 9, a radiator throttle valve 1, a radiator one-way valve 2, and a second warm air one-way valve 7. The input end of the motor one-way valve 10 is connected to the input end of the motor 14, the output end of the motor one-way valve 10 is connected to one end of the motor throttle valve 9, the other end of the motor throttle valve 9 is connected to the expansion kettle 3, one end of the radiator throttle valve 1 is connected to the expansion kettle 3, the other end of the radiator throttle valve 1 is respectively connected to the output end of the radiator one-way valve 2 and the output end of the second warm air one-way valve 7, the input end of the radiator one-way valve 2 is connected to the radiator 5, and the input end of the second warm air one-way valve 7 is connected to the warm air core 21.

[0041] Preferably, the output end of the warm air water pump 26 is also connected in series with a water heater 30 , and the warm air water pump 26 is used to heat the warm air circuit when the electric drive heat is insufficient.

[0042] This invention is designed for heavy-duty trucks, where motor 14 has high torque. Even if the heat generated is high, if the battery and passenger compartment heat demand is low, or if the heat pump and PTC system have been heating the vehicle for a period of time, the coolant at the motor 14 outlet can be controlled by controlling the water pump speed to directly heat the battery and passenger compartment. This effectively reduces the operating time of high-voltage components and significantly reduces battery life degradation.

[0043] The working principle and working process of the present invention are as follows:

[0044] Typical thermal management modes include integrated mode. This solution's key feature is its integration of the electric drive, battery, and air conditioner. The entire water circuit is connected via two four-way valves, a three-way proportional valve 38, and a shut-off valve 29. To meet varying heat or cooling requirements, simply change the valve opening. This allows for a combination of various modes, including electric drive cooling, battery heating and cooling, and air conditioning cooling and heating. The water circuits for the electric drive, battery, and heater can be switched between series and parallel connections.

[0045] Another common thermal management mode is heat pump heating. In this mode, when the radiator's four-way valve 25 is switched to cb, the three-way valve 4's ac circuit opens, bypassing the radiator 5. The heat pump absorbs heat from the electric drive through the plate heat exchanger 23. The refrigerant is compressed by the compressor and dissipated at the water-cooled condenser 17, heating the coolant. The hot liquid flowing through the heater core 21 heats the passenger compartment. Simultaneously, the three-way proportional valve 38ac opens, directing heat into the battery circuit, thereby heating the battery. The heat distribution in each circuit is as follows:

[0046] Refrigerant side: electric compressor 27 (power supply) → muffler 24 → first temperature and pressure sensor 28 → water-cooled condenser 17 (heat release) → electronic expansion valve → plate heat exchanger 23 (heat absorption) → second temperature and pressure sensor 22 → electric compressor 27;

[0047] Coolant (heating): water-cooled condenser 17 (hot water) → heater core 21 (passenger compartment heating) → heater water pump 26 → ab line of three-way proportional valve 38 (ac line of three-way proportional valve 38 → battery pack 35 (battery heating) → battery water pump 32 → cb line of battery four-way valve 31 → battery pack 35 (where the rear side of battery water pump 32 is diverted to the main line)) → water-cooled condenser 17;

[0048] Coolant (provides heat source): PDU (power distribution unit 12) / MCU (control unit 13) / motor 14 (hot water) → ab line of three-way valve 4 → electric water pump 11 → cb line of radiator four-way valve 25 → plate heat exchanger 23 (provides hot water, refrigerant absorbs heat) → cb line of battery four-way valve 31 → ad line of radiator four-way valve 25 → PDU / MCU / motor 14.

[0049] Another commonly used thermal management mode is the electric drive waste heat heating mode. In this mode, the energy flow is:

[0050] Coolant circulation: PDU / MCUC / motor 14 (high-temperature coolant here) → first temperature sensor 39 → ac line of three-way valve 4 → second temperature sensor 6 → electric water pump 11 → ca line of radiator four-way valve 25 → plate heat exchanger 23 → cb line of battery four-way valve 31 → battery pack 35 (with heating demand) → battery water pump 32 → ab line of battery four-way valve 31 → ad line of motor 14 four-way valve → PDU / MCU / motor 14.

[0051] This mode uses the residual heat from motor 14 to heat the passenger compartment and battery. This mode is activated when the residual heat from motor 14 is high, reaching around 60°C in heavy-duty trucks, and can meet the battery's cooling requirements. This mode has the advantage of not requiring high-voltage components to operate, significantly saving energy.

[0052] The characteristics of the present invention are:

[0053] (1) The waste heat from the motor 14 is used in conjunction with a heat pump for heating, as verified by simulation and testing. Based on the principle of energy management and allocation, the waste heat generated by the vehicle is optimally utilized to achieve energy recycling. This minimizes the degradation of the cruising range, which is expected to increase by 10%, allowing the cruising range in winter to reach approximately 85% of that at normal temperatures.

[0054] (2) The integrated architecture effectively saves space and reduces weight. It also significantly reduces the total number of components, lowering procurement costs. Traditional heavy-duty trucks use a separate thermal management unit for the battery. Therefore, the entire vehicle requires two sets of compressors, radiators, and electronic fans. This patent also reduces the total number of components and costs.

[0055] (3) It can be used for platform development. The entire thermal management architecture can cover the air conditioning, battery and electric drive as an integrated architecture. With the corresponding interfaces reserved, it can also be used for other similar models.

[0056] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A thermal management architecture for passenger compartment and battery heavy trucks, characterized by: Including refrigerant circuit, electric drive circuit and heating circuit, The refrigerant circuit includes a plate heat exchanger, an electric compressor, a water-cooled condenser, an evaporator, and a blower. The refrigerant outlet of the plate heat exchanger is connected to the input port of the electric compressor, the output port of the electric compressor is connected to the refrigerant inlet of the water-cooled condenser, the refrigerant outlet of the water-cooled condenser is respectively connected to the refrigerant inlet of the plate heat exchanger and the input port of the evaporator, and the output port of the evaporator is connected to the input port of the electric compressor; The electric drive circuit includes a motor, a three-way valve, a radiator, an electronic fan, an electric water pump, a radiator four-way valve, a battery four-way valve, a battery pack, a battery water pump, and a stop valve. The motor is used to dissipate heat from the motor. The output end of the motor is connected to the a port of the three-way valve, the b port of the three-way valve is connected to the input port of the radiator, the c port of the three-way valve and the output port of the radiator are both connected to the input port of the electric water pump, the output port of the electric water pump is connected to the c port of the radiator four-way valve, the d port of the radiator four-way valve is respectively connected to the input end of the motor and one end of the stop valve, the b port of the radiator four-way valve is connected to the hot water inlet of the plate heat exchanger, the hot water outlet of the plate heat exchanger is connected to the c port of the battery four-way valve, the b port of the battery four-way valve is connected to the a port of the radiator four-way valve, the d port of the battery four-way valve is connected to the input end of the battery pack, and the output end of the battery pack is connected to the input port of the battery water pump. The electronic fan is used to accelerate the heat dissipation of the radiator; The warm air circuit includes a warm air core, a blower, a warm air water pump, a three-way proportional valve, a first warm air one-way valve, and a battery one-way valve. The input end of the warm air core is connected to the cold water outlet of the water-cooled condenser, the output end of the warm air core is connected to the input port of the warm air water pump, the output port of the warm air water pump is connected to port a of the three-way proportional valve, the pipeline between the output port of the warm air water pump and port a of the three-way proportional valve and the pipeline between the output end of the motor and port a of the three-way valve are connected to form a water circuit intersection, port b of the three-way proportional valve is connected to the input port of the first warm air one-way valve, the output port of the first warm air one-way valve is connected to the other end of the stop valve, port a of the battery four-way valve and the cold water inlet of the water-cooled condenser are connected to the output port of the first warm air one-way valve, port c of the three-way proportional valve is connected to the input end of the battery one-way valve, and the output end of the battery one-way valve is connected to the input end of the battery pack. The blower is used to send out the heat emitted by the warm air core.

2. A passenger compartment and battery heavy truck thermal management architecture according to claim 1, characterized in that: The electric drive circuit further includes a power distribution unit and a control unit. The power distribution unit is electrically connected to the control unit, and the control unit is electrically connected to the motor.

3. A passenger compartment and battery heavy truck thermal management architecture according to claim 2, characterized in that: The electric drive circuit further includes an expansion kettle, which is connected to a pipeline between the d port of the radiator four-way valve and the input end of the motor.

4. A passenger compartment and battery heavy truck thermal management architecture according to claim 3, characterized in that: A first temperature sensor is connected in series to the output end of the motor, a second temperature sensor is connected in series to the input port of the electric water pump, a third temperature sensor is connected in series to the input end of the battery pack, and a fourth temperature sensor is connected in series to the output end of the battery pack. The first temperature sensor, the second temperature sensor, the third temperature sensor, and the fourth temperature sensor are all electrically connected to the control unit.

5. The thermal management architecture of a passenger compartment and battery heavy truck according to claim 4 is characterized in that: The warm air circuit further comprises a water heater, which is connected in series between the water circuit intersection and the warm air water pump.

6. A passenger compartment and battery heavy truck thermal management architecture according to claim 5, characterized in that: The output port of the electric compressor is connected in series with a muffler.

7. A passenger compartment and battery heavy truck thermal management architecture according to claim 6, characterized in that: A first temperature and pressure sensor is connected in series to the input port of the electric compressor, and a second temperature and pressure sensor is connected in series between the muffler and the refrigerant inlet of the water-cooled condenser. The first temperature and pressure sensor and the second temperature and pressure sensor are both electrically connected to the control unit.

8. The thermal management architecture of a passenger compartment and battery heavy truck according to claim 7 is characterized in that: The input port of the evaporator is connected in series with an air-conditioning electronic expansion valve, and the refrigerant inlet of the plate heat exchanger is connected in series with a battery electronic expansion valve.

9. The thermal management architecture of a passenger compartment and battery heavy truck according to claim 8, characterized in that: The electric drive circuit also includes a motor one-way valve, a motor throttle valve, a radiator throttle valve, a radiator one-way valve, and a second warm air one-way valve. The input end of the motor one-way valve is connected to the input end of the motor, the output end of the motor one-way valve is connected to one end of the motor throttle valve, the other end of the motor throttle valve is connected to the expansion kettle, one end of the radiator throttle valve is connected to the expansion kettle, the other end of the radiator throttle valve is respectively connected to the output end of the radiator one-way valve and the output end of the second warm air one-way valve, the input end of the radiator one-way valve is connected to the radiator, and the input end of the second warm air one-way valve is connected to the warm air core.

10. A passenger compartment and battery heavy truck thermal management architecture according to claim 9, characterized in that: The output end of the warm air water pump is also connected in series with a water heater.

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