Thermal management structure of extended-range automobile

Abstract

The utility model discloses a heat management structure of an extended-range automobile, which comprises a motor electric control loop, a first electronic water pump, a DCDC + OBC module, a driving motor assembly, a generator assembly, a motor radiator, a first three-way valve, an intercooling radiator, a first CHILLER cooler, a water-air intercooler, a GCU + PDU controller assembly and a first expansion water tank, an outlet end of the engine assembly is communicated with an inlet end of the motor radiator, an outlet end of the motor radiator is communicated with a first port of the first three-way valve, a second port of the first three-way valve is communicated with an inlet end of the intercooling radiator, and an outlet end of the water-air intercooler is communicated with an inlet end of the GCU + PDU controller assembly. In the electric control loop of the motor, the intercooling radiator is arranged to further cool the cooling liquid after heat exchange of the motor radiator, so that the temperature of the cooled cooling liquid meets the temperature requirement required by air intake of the engine, and the air intake temperature after the intercooler is controlled under the high-temperature working condition; therefore, the situation of early explosion or shock explosion of the engine is prevented.

Description

Technical Field

[0001] This utility model relates to the field of vehicle thermal management system technology, and in particular to a thermal management structure for range-extended vehicles. Background Technology

[0002] Existing range-extended vehicles, especially those with engines equipped with water-cooled intercoolers, face challenges due to the high ambient temperature during summer thermal equilibrium conditions. This makes it difficult to control the intake air temperature after the intercooler, resulting in high intake manifold temperatures and increasing the risk of pre-ignition and knocking in the engine. Utility Model Content

[0003] The purpose of this invention is to provide a thermal management structure for range-extended vehicles to solve the problem of difficulty in controlling the intake air temperature of the intercooler under high-temperature conditions.

[0004] This utility model provides a thermal management structure for a range-extended vehicle, including a motor control circuit. The motor control circuit includes a first electronic water pump, a DC-DC+OBC module, a drive motor assembly, a generator assembly, a motor radiator, a first three-way valve, an intercooler radiator, a first chiller, a water-to-air intercooler, a GCU+PDU controller assembly, and a first expansion tank, wherein:

[0005] The outlet of the first electronic water pump is connected to the inlet of the DC-DC+OBC module. The outlet of the DC-DC+OBC module is connected to the inlet of the drive motor assembly. The outlet of the drive motor assembly is connected to the inlet of the generator assembly. The outlet of the generator assembly is connected to the inlet of the motor radiator. The outlet of the motor radiator is connected to the first port of the first three-way valve. The second port of the first three-way valve is connected to the inlet of the intercooler radiator. The third port of the first three-way valve is connected to the inlet of the GCU+PDU controller assembly. The outlet of the intercooler radiator is connected to the water-side inlet of the first chiller. The water-side outlet of the first chiller is connected to the inlet of the water-air cooler. The outlet of the water-air cooler is connected to the inlet of the GCU+PDU controller assembly. The outlet of the GCU+PDU controller assembly is connected to the inlet of the first expansion tank. The outlet of the first expansion tank is connected to the inlet of the first electronic water pump.

[0006] The thermal management structure of a range-extended vehicle as described above, preferably, further includes an air conditioning circuit, which comprises a compressor, a condenser, an outer coaxial tube, an inner coaxial tube, a front evaporator, a first chiller, and a second chiller, wherein:

[0007] The compressor's outlet end is connected to the condenser's inlet end, the condenser's outlet end is connected to the inlet end of the coaxial tube's outer tube, the coaxial tube's outer tube's outlet end is connected to the inlet end of the front evaporator, the refrigerant-side inlet end of the first chiller, and the inlet end of the second chiller, respectively. The outlet ends of the front evaporator, the first chiller, and the second chiller are all connected to the inlet end of the coaxial tube's inner tube, and the coaxial tube's inner tube's outlet end is connected to the compressor's inlet end.

[0008] In the thermal management structure of a range-extended vehicle as described above, preferably, a first electronic expansion valve is provided on the connecting pipe between the coaxial outer pipe and the front evaporator, a second electronic expansion valve is provided on the connecting pipe between the coaxial outer pipe and the refrigerant side of the first chiller, and a third electronic expansion valve is provided on the connecting pipe between the coaxial outer pipe and the refrigerant side of the second chiller.

[0009] The thermal management structure of a range-extended vehicle as described above, preferably, includes a battery circuit, which comprises a power battery pack, a second chiller, and a plate heat exchanger, wherein:

[0010] The outlet end of the power battery pack is connected to the water-side inlet end of the second CHILLER cooler, the water-side outlet end of the second CHILLER cooler is connected to the cold-side inlet end of the plate heat exchanger, and the cold-side outlet end of the plate heat exchanger is connected to the inlet end of the power battery pack.

[0011] In the thermal management structure of a range-extended vehicle as described above, preferably, the air conditioning circuit further includes a second electronic water pump, a heater core, a water PTC module, a second three-way valve, and a third three-way valve, wherein:

[0012] The outlet of the second electronic water pump is connected to the inlet of the water PTC module. The outlet of the water PTC module is connected to the first port of the second three-way valve. The second port of the second three-way valve is connected to the inlet of the hot side of the plate heat exchanger. The outlet of the hot side of the plate heat exchanger is connected to the first port of the third three-way valve. The third port of the second three-way valve is connected to the inlet of the warm air core. The outlet of the warm air core is connected to the first port of the third three-way valve. The second port of the third three-way valve is connected to the inlet of the second electronic water pump.

[0013] The thermal management structure of a range-extended vehicle as described above, preferably, further includes an engine cooling circuit, which comprises a third electronic water pump, a cylinder block water jacket, a cylinder head water jacket, a thermostat, an oil cooler, an EGR cooler, and a turbocharger, wherein:

[0014] The outlet end of the third electric water pump is connected to the inlet end of the cylinder block water jacket. The outlet end of the cylinder block water jacket is connected to the inlet end of the cylinder head water jacket, the outlet end of the oil cooler, and the inlet end of the turbocharger. The outlet end of the cylinder head water jacket is connected to the first port of the thermostat. The second port of the thermostat is connected to the inlet end of the second electric water pump and the inlet end of the third electric water pump. The outlet end of the oil cooler is connected to the inlet end of the EGR cooler. The outlet end of the EGR cooler and the outlet end of the turbocharger are both connected to the inlet end of the third electric water pump.

[0015] In the thermal management structure of a range-extended vehicle as described above, preferably, the engine cooling circuit further includes a high-temperature radiator, the third port of the thermostat is connected to the inlet end of the high-temperature radiator, and the outlet end of the high-temperature radiator is connected to the inlet end of the third electric water pump.

[0016] In the thermal management structure of a range-extended vehicle as described above, preferably, the engine cooling circuit further includes a second expansion tank, the degassing pipe of the high-temperature radiator and the degassing pipe of the cylinder head water jacket are both connected to the inlet end of the second expansion tank, and the outlet end of the second expansion tank is connected to the inlet end of the third electric water pump.

[0017] In the thermal management structure of a range-extended vehicle as described above, preferably, a transition joint and a cylinder head water passage are further provided on the connecting pipe between the EGR cooler and the third electric water pump. The outlet end of the EGR cooler is connected to the inlet end of the transition joint, the outlet end of the transition joint is connected to the inlet end of the cylinder head water passage, and the outlet end of the cylinder head water passage is connected to the inlet end of the third electric water pump.

[0018] In the thermal management structure of a range-extended vehicle as described above, preferably, the second port of the thermostat is also connected to the inlet of the second electronic water pump, the third port of the third three-way valve is connected to the inlet of the third electronic water pump, and a temperature sensor is provided at the second port of the thermostat.

[0019] Compared with the prior art, this utility model further cools the coolant after heat exchange in the motor control circuit by setting an intercooler, so that the temperature of the cooled coolant reaches the temperature required for engine intake air, thereby achieving control of the intake air temperature after the intercooler under high temperature conditions, and preventing premature detonation or knocking of the engine. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the thermal management structure provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100 - Motor control circuit, 200 - Air conditioning circuit, 300 - Battery circuit, 400 - Engine cooling circuit;

[0023] 1-First electric water pump, 2-DC-CDC+OBC module, 3-Drive motor assembly, 4-Generator assembly, 5-Motor radiator, 6-First three-way valve, 7-Intercooler radiator, 8-First chiller, 81-Water side of first chiller, 82-Refrigerant side of first chiller, 9-Water-to-air intercooler, 10-GCU+PDU controller assembly, 11-First expansion tank, 12-Compressor, 13-Condenser, 14-Coaxial tube outer pipe, 15-Coaxial tube inner pipe, 16-Pre-evaporator, 17-Second chiller, 171-Water side of second chiller, 172-Second chiller ER cooler refrigerant side, 18-first electronic expansion valve, 19-second electronic expansion valve, 20-third electronic expansion valve, 21-power battery pack, 22-plate heat exchanger, 221-cold side of plate heat exchanger, 222-hot side of plate heat exchanger, 23-second electronic water pump, 24-heater core, 25-water PTC module, 26-second three-way valve, 27-third three-way valve, 28-third electronic water pump, 29-cylinder block water jacket, 30-cylinder head water jacket, 31-thermostat, 32-oil cooler, 33-EGR cooler, 34-turbocharger, 35-high temperature radiator, 36-second expansion tank, 37-transition joint, 38-cylinder head water passage, 39-temperature sensor. Detailed Implementation

[0024] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] Reference Figure 1As shown, this utility model provides a thermal management structure for a range-extended vehicle, including a motor control circuit 100. The motor control circuit 100 includes a first electronic water pump 1, a DC-DC+OBC module 2, a drive motor assembly 3, a generator assembly 4, a motor radiator 5, a first three-way valve 6, an intercooler radiator 7, a first chiller 8, a water-to-air intercooler 9, a GCU+PDU controller assembly 10, and a first expansion tank 11, wherein:

[0026] The outlet of the first electronic water pump 1 is connected to the inlet of the DC-DC+OBC module 2. The outlet of the DC-DC+OBC module 2 is connected to the inlet of the drive motor assembly 3. The outlet of the drive motor assembly 3 is connected to the inlet of the generator assembly 4. The outlet of the generator assembly 4 is connected to the inlet of the motor radiator 5. The outlet of the motor radiator 5 is connected to the first port of the first three-way valve 6. The second port of the first three-way valve 6 is connected to the inlet of the intercooler radiator 7. The third port of the first three-way valve 6 is connected to the GCU+PD. The inlet of the U controller assembly 10 is connected, the outlet of the intercooler radiator 7 is connected to the inlet of the water side 81 of the first chiller, the outlet of the water side 81 of the first chiller is connected to the inlet of the water-air cooler 9, the outlet of the water-air cooler 9 is connected to the inlet of the GCU+PDU controller assembly 10, the outlet of the GCU+PDU controller assembly 10 is connected to the inlet of the first expansion tank 11, and the outlet of the first expansion tank 11 is connected to the inlet of the first electronic water pump 1.

[0027] In the embodiments provided in this application, the heat generated when the engine is working causes the coolant in the motor control circuit 100 to heat up. After the coolant is heated, it is cooled down by the motor radiator 5 and then flows sequentially through the GCU+PDU controller assembly 10 and the first expansion tank 11. Under the action of the first electronic water pump 1, it flows into the DC-DC+OBC module 2, the drive motor assembly 3 and the generator assembly 4. When the vehicle is in a high-temperature condition in summer, in order to improve the heat dissipation efficiency, the coolant cooled by the motor radiator 5 flows part or even all of the coolant to the intercooler radiator 7 for secondary cooling through the action of the first three-way valve 6. The coolant that has been cooled down for the second time exchanges heat with the air conditioning circuit 200 on the water side 81 of the first chiller and then flows back to the first electronic water pump 1 through the water intercooler 9. After multiple heat exchanges, the coolant reaches the temperature required to enter the engine intake, thereby ensuring the normal operation of the engine and effectively avoiding the occurrence of engine knocking or detonation due to high intake manifold temperature.

[0028] The motor radiator 5 and the intercooler radiator 7 are connected by the first three-way valve 6. The flow rate of coolant to the intercooler radiator 7 is controlled by adjusting the opening of the first three-way valve 6. This allows the coolant to be distributed to different locations according to the cooling requirements, so as to keep the engine intake air temperature stably and closed-loop controlled within an optimal range, improve engine power and economy, and reduce the overall fuel consumption of the vehicle.

[0029] The thermal management structure also includes an air conditioning circuit 200, which includes a compressor 12, a condenser 13, a coaxial outer pipe 14, a coaxial inner pipe 15, a front evaporator 16, a first chiller 8, and a second chiller 17, wherein:

[0030] The outlet end of the compressor 12 is connected to the inlet end of the condenser 13. The outlet end of the condenser 13 is connected to the inlet end of the coaxial tube outer pipe 14. The outlet end of the coaxial tube outer pipe 14 is connected to the inlet end of the front evaporator 16, the inlet end of the refrigerant side 82 of the first chiller, and the inlet end of the second chiller 17, respectively. The outlet ends of the front evaporator 16, the refrigerant side 82 of the first chiller, and the refrigerant side 172 of the second chiller are all connected to the inlet end of the coaxial tube inner pipe 15. The outlet end of the coaxial tube inner pipe 15 is connected to the inlet end of the compressor 12.

[0031] The coolant flowing from the outer pipe 14 of the coaxial tube to the refrigerant side 82 of the first chiller can exchange heat with the coolant flowing through the water side 81 of the first chiller to reduce the coolant temperature of the motor control circuit 100, so that the coolant temperature of the motor control circuit 100 can meet the requirements of the engine intake air temperature.

[0032] In one feasible implementation, a first electronic expansion valve 18 is provided on the connecting pipe between the coaxial outer pipe 14 and the front evaporator 16; a second electronic expansion valve 19 is provided on the connecting pipe between the coaxial outer pipe 14 and the refrigerant side 82 of the first chiller; and a third electronic expansion valve 20 is provided on the connecting pipe between the coaxial outer pipe 14 and the refrigerant side 172 of the second chiller. The first electronic expansion valve 18, the second electronic expansion valve 19, and the third electronic expansion valve 20 respectively control the flow rate of the coolant flowing out of the coaxial outer pipe 14 into the front evaporator 16, the first chiller 8, and the second chiller 17, and can reasonably distribute the coolant flow rate according to the heat dissipation requirements of the motor control circuit 100.

[0033] In the embodiments provided in this application, the thermal management structure includes a battery circuit 300, which includes a power battery pack 21, a second chiller 17, and a plate heat exchanger 22. The outlet end of the power battery pack 21 is connected to the inlet end of the water side 171 of the second chiller, the outlet end of the water side 171 of the second chiller is connected to the inlet end of the cold side 221 of the plate heat exchanger, and the outlet end of the cold side 221 of the plate heat exchanger is connected to the inlet end of the power battery pack 21.

[0034] The coolant flowing into the refrigerant side 172 of the second chiller from the coaxial outer tube 14 exchanges heat with the coolant on the water side 171 of the second chiller, causing the coolant temperature on the water side 171 of the second chiller to decrease. The cooled coolant then enters the cold side 221 of the plate heat exchanger, where it exchanges heat with the coolant on the hot side 222 of the plate heat exchanger for further cooling. Finally, it flows back to the power battery pack 21 to cool the power battery pack 21, so that the power battery can operate at a suitable temperature.

[0035] Furthermore, the air conditioning circuit 200 also includes a second electronic water pump 23, a heater core 24, a water PTC module 25, a second three-way valve 26, and a third three-way valve 27, wherein:

[0036] The outlet of the second electronic water pump 23 is connected to the inlet of the water PTC module 25. The outlet of the water PTC module is connected to the first port of the second three-way valve 26. The second port of the second three-way valve 26 is connected to the inlet of the hot side 222 of the plate heat exchanger. The outlet of the hot side 222 of the plate heat exchanger is connected to the first port of the third three-way valve 27. The third port of the second three-way valve 26 is connected to the inlet of the warm air core 24. The outlet of the warm air core 24 is connected to the first port of the third three-way valve 27. The second port of the third three-way valve 27 is connected to the inlet of the second electronic water pump 23.

[0037] When the passenger compartment of the vehicle requires heating, the coolant flows through the hot side 222 of the plate heat exchanger and exchanges heat with the cold side 221 of the plate heat exchanger, causing the coolant temperature to rise. The heated coolant then flows into the heater core 24 through the third three-way valve 27, thereby achieving heating of the passenger compartment. At the same time, the coolant can be heated by the water PTC module 25 and then flows into the heater core 24 through the third three-way valve 27. The third three-way valve 27 can control the flow rate of the coolant heated by the water PTC module 25 and the coolant heated by the plate heat exchanger 22. In this way, the opening degree of each port of the third three-way valve 27 can be controlled according to the cooling requirements of the battery circuit 300, so as to achieve reasonable control of the coolant flow rate.

[0038] Reference Figure 1As shown, the thermal management structure also includes an engine cooling circuit 400, which includes a third electronic water pump 28, a cylinder block water jacket 29, a cylinder head water jacket 30, a thermostat 31, an oil cooler 32, an EGR cooler 33, and a turbocharger 34, wherein:

[0039] The outlet of the third electric water pump 28 is connected to the inlet of the cylinder block water jacket 29. The outlet of the cylinder block water jacket 29 is connected to the inlet of the cylinder head water jacket 30, the outlet of the oil cooler 32, and the inlet of the turbocharger 34. The outlet of the cylinder head water jacket 30 is connected to the first port of the thermostat 31. The second port of the thermostat 31 is connected to the inlet of the second electric water pump 23 and the inlet of the third electric water pump 28. The outlet of the oil cooler 32 is connected to the inlet of the EGR cooler 33. The outlet of the EGR cooler 33 and the outlet of the turbocharger 34 are both connected to the inlet of the third electric water pump 28.

[0040] Under normal operating conditions, the heat generated by the engine causes the coolant temperature in the engine cooling circuit 400 to rise. Part of the heated coolant flows through the thermostat 31 into the third electronic water pump 28, where it returns to the engine. Another portion of the heated coolant flows sequentially through the oil cooler 32 and the EGR cooler 33, lowering its temperature. This cooled coolant then flows back into the engine under the action of the third electronic water pump 28 to further cool the engine. A further portion of the coolant flows through the turbocharger 34, where its temperature is also lowered. This cooled coolant then flows back into the engine under the action of the third electronic water pump 28 to further cool the engine.

[0041] When the vehicle is operating under high temperature conditions in summer, the oil cooler 32, EGR cooler 33 and turbocharger 34 alone cannot meet the engine's heat dissipation requirements. Therefore, the engine cooling circuit 400 also includes a high temperature radiator 35. The third port of the thermostat 31 is connected to the inlet end of the high temperature radiator 35, and the outlet end of the high temperature radiator 35 is connected to the inlet end of the third electric water pump 28.

[0042] After the coolant senses the high temperature through the temperature sensor in the thermostat 31, the third port of the thermostat 31 opens, and the coolant flows into the high-temperature radiator 35 to dissipate heat and cool down. The cooled coolant then flows into the engine under the action of the third electronic water pump 28 to cool the engine.

[0043] After absorbing heat generated by the engine, the coolant expands. To prevent coolant from overflowing the system, the engine cooling circuit 400 also includes a second expansion tank 36. The degassing pipes of the high-temperature radiator 35 and the cylinder head water jacket 30 are connected to the inlet of the second expansion tank 36. The outlet of the second expansion tank 36 is connected to the inlet of the third electric water pump 28. Under normal operating conditions, the expanded coolant can enter the second expansion tank 36 through the degassing pipe of the cylinder head water jacket 30. Under high-temperature operating conditions, the expanded coolant can enter the second expansion tank 36 through the degassing pipes of the cylinder head water jacket 30 and the high-temperature radiator 35, respectively. After being cooled in the second expansion tank 36, the expanded coolant flows back to the engine through the third electric water pump 28, thereby maintaining the pressure balance of the system.

[0044] To prevent excessive cylinder head temperature and heat loss, the embodiments provided in this application include a transition joint 37 and a cylinder head water passage 38 on the connecting pipe between the EGR cooler 33 and the third electronic water pump 28. The outlet end of the EGR cooler 33 is connected to the inlet end of the transition joint 37, the outlet end of the transition joint 37 is connected to the inlet end of the cylinder head water passage 38, and the outlet end of the cylinder head water passage 38 is connected to the inlet end of the third electronic water pump 28. The coolant, cooled by the oil cooler 32 and the EGR cooler 33, flows into the cylinder head water passage 38 through the transition joint to dissipate heat from the cylinder head. After cooling, the coolant flows back to the engine under the action of the third electronic water pump 28.

[0045] When the temperature sensor inside the thermostat 31 detects a high coolant temperature, the heat generated by the engine can be used to heat the passenger compartment. In one feasible embodiment, the second port of the thermostat 31 is also connected to the inlet of the second electronic water pump 23, and the third port of the third three-way valve 27 is connected to the inlet of the third electronic water pump 28. A temperature sensor 39 is provided at the second port of the thermostat 31. The temperature sensor 39 can detect the temperature of the coolant flowing out of the second port of the thermostat 31. When the detected temperature is suitable for heating the passenger compartment, the coolant flowing out of the thermostat 31 can be sent into the heater core 24 under the action of the second electronic water pump 23 to heat the passenger compartment. The coolant then flows back to the engine under the action of the third electronic water pump 28.

[0046] The above description of the structure, features and effects of this utility model is based on the embodiments shown in the drawings. The above are only preferred embodiments of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A thermal management structure for a range-extended electric vehicle, characterized in that, The system includes a motor control circuit, comprising a first electronic water pump, a DC-DC+OBC module, a drive motor assembly, a generator assembly, a motor radiator, a first three-way valve, an intercooler radiator, a first chiller, a water-to-air intercooler, a GCU+PDU controller assembly, and a first expansion tank, wherein: The outlet of the first electronic water pump is connected to the inlet of the DC-DC+OBC module. The outlet of the DC-DC+OBC module is connected to the inlet of the drive motor assembly. The outlet of the drive motor assembly is connected to the inlet of the generator assembly. The outlet of the generator assembly is connected to the inlet of the motor radiator. The outlet of the motor radiator is connected to the first port of the first three-way valve. The second port of the first three-way valve is connected to the inlet of the intercooler radiator. The third port of the first three-way valve is connected to the inlet of the GCU+PDU controller assembly. The outlet of the intercooler radiator is connected to the water-side inlet of the first chiller. The water-side outlet of the first chiller is connected to the inlet of the water-air cooler. The outlet of the water-air cooler is connected to the inlet of the GCU+PDU controller assembly. The outlet of the GCU+PDU controller assembly is connected to the inlet of the first expansion tank. The outlet of the first expansion tank is connected to the inlet of the first electronic water pump.

2. The thermal management structure for a range-extended vehicle according to claim 1, characterized in that, The thermal management structure also includes an air conditioning circuit, which comprises a compressor, a condenser, a coaxial outer tube, a coaxial inner tube, a front evaporator, a first chiller, and a second chiller, wherein: The compressor's outlet end is connected to the condenser's inlet end, the condenser's outlet end is connected to the inlet end of the coaxial tube's outer tube, the coaxial tube's outer tube's outlet end is connected to the inlet end of the front evaporator, the refrigerant-side inlet end of the first chiller, and the inlet end of the second chiller, respectively. The outlet ends of the front evaporator, the first chiller, and the second chiller are all connected to the inlet end of the coaxial tube's inner tube, and the coaxial tube's inner tube's outlet end is connected to the compressor's inlet end.

3. The thermal management structure for a range-extended vehicle according to claim 2, characterized in that, A first electronic expansion valve is provided on the connecting pipe between the outer coaxial tube and the front evaporator; a second electronic expansion valve is provided on the connecting pipe between the outer coaxial tube and the refrigerant side of the first chiller; and a third electronic expansion valve is provided on the connecting pipe between the outer coaxial tube and the refrigerant side of the second chiller.

4. The thermal management structure for a range-extended vehicle according to claim 3, characterized in that, The thermal management structure includes a battery circuit, which comprises a power battery pack, a second CHILLER cooler, and a plate heat exchanger, wherein: The outlet end of the power battery pack is connected to the water-side inlet end of the second CHILLER cooler, the water-side outlet end of the second CHILLER cooler is connected to the cold-side inlet end of the plate heat exchanger, and the cold-side outlet end of the plate heat exchanger is connected to the inlet end of the power battery pack.

5. The thermal management structure for a range-extended vehicle according to claim 4, characterized in that, The air conditioning circuit also includes a second electronic water pump, a heater core, a water PTC module, a second three-way valve, and a third three-way valve, wherein: The outlet of the second electronic water pump is connected to the inlet of the water PTC module. The outlet of the water PTC module is connected to the first port of the second three-way valve. The second port of the second three-way valve is connected to the inlet of the hot side of the plate heat exchanger. The outlet of the hot side of the plate heat exchanger is connected to the first port of the third three-way valve. The third port of the second three-way valve is connected to the inlet of the warm air core. The outlet of the warm air core is connected to the first port of the third three-way valve. The second port of the third three-way valve is connected to the inlet of the second electronic water pump.

6. The thermal management structure for a range-extended vehicle according to claim 5, characterized in that, The thermal management structure also includes an engine cooling circuit, which comprises a third electronic water pump, cylinder block water jacket, cylinder head water jacket, thermostat, oil cooler, EGR cooler, and turbocharger, wherein: The outlet end of the third electric water pump is connected to the inlet end of the cylinder block water jacket. The outlet end of the cylinder block water jacket is connected to the inlet end of the cylinder head water jacket, the outlet end of the oil cooler, and the inlet end of the turbocharger. The outlet end of the cylinder head water jacket is connected to the first port of the thermostat. The second port of the thermostat is connected to the inlet end of the second electric water pump and the inlet end of the third electric water pump. The outlet end of the oil cooler is connected to the inlet end of the EGR cooler. The outlet end of the EGR cooler and the outlet end of the turbocharger are both connected to the inlet end of the third electric water pump.

7. The thermal management structure for a range-extended vehicle according to claim 6, characterized in that, The engine cooling circuit also includes a high-temperature radiator. The third port of the thermostat is connected to the inlet end of the high-temperature radiator, and the outlet end of the high-temperature radiator is connected to the inlet end of the third electronic water pump.

8. The thermal management structure for a range-extended vehicle according to claim 7, characterized in that, The engine cooling circuit also includes a second expansion tank. The degassing pipe of the high-temperature radiator and the degassing pipe of the cylinder head water jacket are both connected to the inlet end of the second expansion tank. The outlet end of the second expansion tank is connected to the inlet end of the third electric water pump.

9. The thermal management structure for a range-extended vehicle according to claim 6, characterized in that, The EGR cooler and the third electric water pump are connected by a transition joint and a cylinder head water passage. The outlet end of the EGR cooler is connected to the inlet end of the transition joint, the outlet end of the transition joint is connected to the inlet end of the cylinder head water passage, and the outlet end of the cylinder head water passage is connected to the inlet end of the third electric water pump.

10. The thermal management structure for a range-extended vehicle according to claim 6, characterized in that, The second port of the thermostat is also connected to the inlet of the second electronic water pump, and the third port of the third three-way valve is connected to the inlet of the third electronic water pump. A temperature sensor is provided at the second port of the thermostat.

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