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CN-122008812-A - Vehicle thermal management system and vehicle

CN122008812ACN 122008812 ACN122008812 ACN 122008812ACN-122008812-A

Abstract

The invention provides a vehicle thermal management system and a vehicle, and relates to the technical field of vehicles, wherein the vehicle thermal management system comprises a compressor, a condenser, a first flow path, a second flow path, a third flow path and a fourth flow path; the first flow path is provided with a first expansion valve and a refrigerator evaporator, the third flow path is provided with a second expansion valve and an air conditioner evaporator, the inlet of the first flow path and the inlet of the second flow path are connected with the outlet of the condenser through a first switching unit, and the outlet of the first flow path and the outlet of the second flow path are connected with the inlet of the third flow path and the inlet of the fourth flow path through a second switching unit. The refrigerator evaporator and the air conditioner evaporator can work at a lower evaporation temperature under the unified system pressure, the air conditioner evaporator can work at a higher evaporation temperature, the strong refrigerating performance of the vehicle-mounted refrigerator is guaranteed, meanwhile, the reliability and frostless operation of the refrigerating function of the air conditioner in the passenger cabin are guaranteed, the risk of liquid impact of the compressor is reduced, and the safety and reliability of the system are improved.

Inventors

  • ZHANG TONGWEI
  • FU YONGHONG
  • WANG SHUANG
  • YONG ANJIAO
  • GAO YUEXIAN

Assignees

  • 奇瑞汽车股份有限公司

Dates

Publication Date
20260512
Application Date
20260324

Claims (10)

  1. 1. A vehicle thermal management system characterized by comprising a compressor (3), a condenser (19), a first flow path (13), a second flow path (14), a third flow path (15), and a fourth flow path (16); The first flow path (13) is provided with a first expansion valve (10) and a refrigerator evaporator (9); the third flow path (15) is provided with a second expansion valve (7) and an air conditioner evaporator (5); the inlet of the first flow path (13) and the inlet of the second flow path (14) are connected with the outlet of the condenser (19) through a first switching unit, and the inlet of the first flow path (13) and the inlet of the second flow path (14) can be communicated with the outlet of the condenser (19) through the first switching unit; The outlet of the first flow path (13) and the outlet of the second flow path (14) are connected with the inlet of the third flow path (15) and the inlet of the fourth flow path (16) through a second switching unit, the inlet of the third flow path (15) and the inlet of the fourth flow path (16) can be communicated with the outlet of the first flow path (13) through the second switching unit, and the inlet of the third flow path (15) and the inlet of the fourth flow path (16) can be communicated with the outlet of the second flow path (14) through the second switching unit; the outlet of the third flow path (15) and the outlet of the fourth flow path (16) are both connected to the inlet of the compressor (3).
  2. 2. The vehicle thermal management system according to claim 1, characterized in that the first switching unit is a three-way valve (11); the three-way valve (11) comprises a first inlet, a first outlet and a second outlet; The first inlet is connected with an outlet of the condenser (19), the first outlet is connected with an inlet of the first flow path (13), and the second outlet is connected with an inlet of the second flow path (14).
  3. 3. The vehicle thermal management system according to claim 1, wherein the second switching unit is a four-way valve (8): the four-way valve (8) comprises a second inlet, a third outlet and a fourth outlet; The second inlet is connected with the outlet of the first flow path (13), the third inlet is connected with the outlet of the second flow path (14), the third outlet is connected with the inlet of the third flow path (15), and the fourth outlet is connected with the inlet of the fourth flow path (16).
  4. 4. The vehicle thermal management system of claim 1, further comprising a controller; The compressor (3), the first switching unit, the second switching unit, the first expansion valve (10) and the second expansion valve (7) are all connected with the controller.
  5. 5. The vehicle thermal management system according to claim 1, further comprising a front-end cooling module (1), the condenser (19) being integrated in the front-end cooling module (1).
  6. 6. The vehicle thermal management system according to claim 5, wherein the front end cooling module (1) further comprises a first fan (17), the first fan (17) being arranged on the condenser (19) side.
  7. 7. The vehicle thermal management system according to claim 6, characterized in that the front-end cooling module (1) further comprises a radiator arranged at a side of the condenser (19) facing away from the first fan (17).
  8. 8. The vehicle thermal management system according to claim 1, characterized in that a second fan (18) is provided on one side of the refrigerator evaporator (9).
  9. 9. The vehicle thermal management system according to claim 1, characterized in that a third fan (4) is provided at one side of the air conditioning evaporator (5).
  10. 10. A vehicle comprising a vehicle thermal management system according to any one of claims 1-9.

Description

Vehicle thermal management system and vehicle Technical Field The invention relates to the technical field of vehicles, in particular to a vehicle thermal management system and a vehicle. Background Along with the improvement of vehicle intellectualization and comfort demands, vehicle-mounted refrigerators are gradually becoming the standard of numerous vehicle types. At present, although the vehicle-mounted refrigerator adopting the independent compressor has strong refrigeration performance, the vehicle-mounted refrigerator has the defects of large occupied space, high cost and unsatisfactory energy consumption performance. To overcome the above-mentioned drawbacks, the prior art proposes an integration scheme of a compressor shared by a vehicle-mounted refrigerator and a vehicle air conditioning system, in which a refrigerator evaporator branch is generally connected in parallel with an air conditioning evaporator branch. However, in-vehicle refrigerators, in order to perform a refrigerating or freezing function, the refrigerator evaporator needs to be operated below-10 ℃, and the passenger compartment air conditioner needs to be operated above 0 ℃ for comfort and anti-frosting. The refrigerator evaporator branch and the air conditioner evaporator branch have large temperature difference, and when the two branches are in parallel operation, the return air pressure of the two branches is mixed in a common suction pipeline, so that the pressure of the whole refrigeration system is forced to be reduced to the working pressure level of the refrigerator evaporator. The evaporator of the air conditioner can be operated under the condition of too low pressure, the surface temperature of the evaporator is easy to drop below the freezing point, condensed water is frosted, air flow and heat exchange are seriously hindered, and finally the refrigerating function is disabled. In conclusion, the refrigerator evaporator branch is connected with the air conditioner evaporator branch in parallel, so that the reliable operation of the passenger cabin air conditioner and the long-acting safety of the compressor are considered while the high-performance refrigeration of the vehicle-mounted refrigerator is guaranteed. Disclosure of Invention The invention aims to provide a vehicle thermal management system which is used for solving the technical problems that in the prior art, a refrigerator evaporator branch and an air conditioner evaporator branch are connected in parallel, and the reliable operation of a passenger cabin air conditioner and the long-acting safety of a compressor are difficult to be considered while the high-performance refrigeration of a vehicle-mounted refrigerator is guaranteed. The invention provides a vehicle thermal management system, which comprises a compressor, a condenser, a first flow path, a second flow path, a third flow path and a fourth flow path; the first flow path is provided with a first expansion valve and a refrigerator evaporator; the third flow path is provided with a second expansion valve and an air conditioner evaporator; The inlet of the first flow path and the inlet of the second flow path are connected with the outlet of the condenser through a first switching unit, and the inlet of the first flow path and the inlet of the second flow path can be communicated with the outlet of the condenser through the first switching unit; The outlet of the first flow path and the outlet of the second flow path are connected with the inlet of the third flow path and the inlet of the fourth flow path through a second switching unit, the inlet of the third flow path and the inlet of the fourth flow path can be communicated with the outlet of the first flow path through the second switching unit, and the inlet of the third flow path and the inlet of the fourth flow path can be communicated with the outlet of the second flow path through the second switching unit; And the outlet of the third flow path and the outlet of the fourth flow path are connected with the inlet of the compressor. Further, the first switching unit is a three-way valve; The three-way valve comprises a first inlet, a first outlet and a second outlet; The first inlet is connected with the outlet of the condenser, the first outlet is connected with the inlet of the first flow path, and the second outlet is connected with the inlet of the second flow path. Further, the second switching unit is a four-way valve: the four-way valve comprises a second inlet, a third outlet and a fourth outlet; The second inlet is connected with the outlet of the first flow path, the third inlet is connected with the outlet of the second flow path, the third outlet is connected with the inlet of the third flow path, and the fourth outlet is connected with the inlet of the fourth flow path. Further, the vehicle thermal management system further includes a controller; The compressor, the first switching unit, the second switching unit, the first expan