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CN-224224862-U - Thermal management assembly, thermal management system and motor vehicle

CN224224862UCN 224224862 UCN224224862 UCN 224224862UCN-224224862-U

Abstract

The utility model provides a thermal management system having a refrigerant circuit and a control unit (6). A gas-liquid separator (5) is arranged in the refrigerant circuit. The temperature of the whole control unit (6) is higher than that of the whole gas-liquid separator (5). The gas-liquid separator (5) and the control unit (6) are constructed as an integrated thermal management assembly to allow the gas-liquid separator (5) to serve as a cold source to cool down the control unit (6). The utility model also provides a motor vehicle comprising the thermal management system.

Inventors

  • WANG WENFENG
  • WANG CHEN
  • JIANG YUNFEI

Assignees

  • 法雷奥汽车空调湖北有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (15)

  1. 1. A thermal management assembly comprising a gas-liquid separator (5) and a control unit (6), characterized in that, The gas-liquid separator (5) and the control unit (6) are integrally constructed to allow the gas-liquid separator (5) to serve as a cold source to cool down the control unit (6).
  2. 2. The thermal management assembly of claim 1, The gas-liquid separator (5) and the control unit (6) are an assembly or an integral part.
  3. 3. The thermal management assembly of claim 1 or 2, wherein, The shell (502) of the gas-liquid separator (5) and the shell (603) of the control unit (6) are both made of heat conducting materials, and the shell (603) of the control unit (6) is attached to the shell (502) of the gas-liquid separator (5).
  4. 4. The thermal management assembly of claim 3, The housing (603) of the control unit (6) is constructed in one piece with an end cap (501) on the housing (502) of the gas-liquid separator (5).
  5. 5. The thermal management assembly of claim 3, A printed circuit board assembly PCBA is arranged in a shell (603) of the control unit (6).
  6. 6. The thermal management assembly of claim 1, The control unit (6) is assembled to the gas-liquid separator (5) by bolts, adhesion, welding or snap-fitting.
  7. 7. The thermal management assembly of claim 4, The gas-liquid separator (5) has a base (503), and a low-pressure refrigerant inlet (504) and a low-pressure refrigerant outlet (505) are provided in the base (503).
  8. 8. The thermal management assembly of claim 7, A high-pressure refrigerant inlet (506) and a high-pressure refrigerant outlet (507) are provided in the end cap (501), and A conduit (510) is provided between the high pressure refrigerant inlet (506) and the high pressure refrigerant outlet (507) such that the high pressure refrigerant inlet (506) and the high pressure refrigerant outlet (507) are in fluid communication with each other, and a wall of the conduit (510) has thermal conductivity to allow the high pressure refrigerant flowing in the conduit (510) to exchange heat with the low pressure refrigerant in the gas-liquid separator (5).
  9. 9. The thermal management assembly of claim 8, A first stand pipe (508) is arranged on the base (503), the lower end of the first stand pipe (508) is fixed in the base (503) and is communicated with the low-pressure refrigerant inlet (504), the upper end of the first stand pipe (508) is opened towards the end cover (501), and A second vertical pipe (509) is arranged on the base (503), the lower end of the second vertical pipe (509) is fixed in the base (503) and is communicated with the low-pressure refrigerant outlet (505), and the upper end of the second vertical pipe (509) is opened towards the end cover (501).
  10. 10. The thermal management assembly of claim 9, A baffle (511) is provided within the gas-liquid separator (5) at least between the upper end opening of the first riser (508) and the upper end opening of the second riser (509) to block refrigerant flowing into the gas-liquid separator (5) via the upper end opening of the first riser (508) from directly flowing into the upper end opening of the second riser (509).
  11. 11. The thermal management assembly of claim 10, A plurality of separators (511) are provided in the gas-liquid separator (5), and notches (512) are provided in the separators (511) to allow refrigerant to pass therethrough.
  12. 12. A thermal management system having a refrigerant circuit in which a gas-liquid separator (5) is arranged and a control unit (6), characterized in that, The thermal management system comprising a thermal management assembly according to any one of claims 1 to 11.
  13. 13. The thermal management system of claim 12, wherein, Along the flow direction of the refrigerant, the refrigerant loop sequentially comprises a compressor (1), a condenser (2), an electronic expansion valve (3), an evaporator (4) and the gas-liquid separator (5).
  14. 14. The thermal management system of claim 12, wherein, The control unit (6) is in communication with components of the thermal management system, including the compressor (1), the electronic expansion valve (3) and/or the sensor, to control the thermal management system.
  15. 15. A motor vehicle, characterized in that, The motor vehicle comprising a thermal management system according to any one of claims 12 to 14.

Description

Thermal management assembly, thermal management system and motor vehicle Technical Field The present utility model relates to a thermal management assembly, a thermal management system including the thermal management assembly, and a motor vehicle employing the thermal management system. Background As the thermal management system of the motor vehicle is developed toward integration, a water plate and a refrigerant plate are generally employed to replace a part of piping in the thermal management system, and thermal management elements such as a water pump, an electronic expansion valve, a fluid switching valve, etc. are integrated on the water plate and the refrigerant plate, thereby forming a fluid management device to simplify system layout and facilitate maintenance. FIG. 1A is a prior art architecture diagram of a thermal management system for a motor vehicle. Referring to fig. 1A, the thermal management system includes a coolant loop (not shown), a refrigerant loop, and a control unit 6. Along the flow direction of the refrigerant (the direction indicated by the black arrow in fig. 1A), the refrigerant circuit includes a compressor 1, a water-cooled condenser 2, an electronic expansion valve 3, an evaporator 4, and a gas-liquid separator 5 in this order. When the thermal management system is in operation, the high-temperature and high-pressure refrigerant discharged from the compressor 1 flows through the water-cooled condenser 2 and after condensation, flows to the electronic expansion valve 3, and after being throttled via the electronic expansion valve 3, becomes a low-temperature and low-pressure refrigerant. The low-temperature low-pressure refrigerant flows to the evaporator 4 to be evaporated to absorb external heat. The low-temperature low-pressure refrigerant flowing out of the outlet of the evaporator 4 includes a gaseous refrigerant and a liquid refrigerant, which flows through the gas-liquid separator 5 to achieve gas-liquid separation, wherein the gaseous refrigerant is discharged and returned to the compressor 1 (in the refrigerant circuit, the refrigerant between the outlet of the electronic expansion valve 3 and the inlet of the compressor 1 is generally referred to as low-pressure refrigerant, and the refrigerant between the outlet of the compressor 1 and the inlet of the electronic expansion valve 3 is referred to as high-pressure refrigerant). During this time, the control unit 6 can be in communication with the compressor 1, the electronic expansion valve 3, and a coolant circuit element (not shown), such as a water pump, a water valve, a sensor, etc., to enable control of the thermal management system. The related art fluid management device integrates circuit boards in electronic components such as the electronic expansion valve 3, the shut-off valve (not shown) and the like into one circuit board (PCBA), and is mounted in a housing to form the control unit 6, so as to further improve the integration level, save the cost, and facilitate the control. However, in the control unit 6, the circuit boards of the various electronic components which are independently distributed are integrated into a single circuit board, so that the heat generating devices on the circuit boards of the various electronic components are intensively arranged on one circuit board, which results in a large heat generation amount during operation and an excessively high operating temperature of the circuit board, thereby easily causing faults. Therefore, it is desirable to cool down the control unit 6 without significantly increasing the structural complexity and manufacturing costs of the thermal management system. Disclosure of utility model [ Technical object ] The present utility model has been made to solve the above technical problems, and other technical problems that are potential. [ Technical solution ] An aspect of the present utility model provides a thermal management assembly that includes a gas-liquid separator and a control unit. The gas-liquid separator and the control unit are integrally constructed to allow the gas-liquid separator to serve as a cold source to cool down the control unit. Optionally, the gas-liquid separator and the control unit are an assembly or an integral piece. Preferably, the housing of the gas-liquid separator and the housing of the control unit are both made of a thermally conductive material, and the housing of the control unit closely conforms to the housing of the gas-liquid separator. Optionally, the housing of the control unit is constructed integrally with an end cap on the housing of the gas-liquid separator. Optionally, the control unit is assembled to the gas-liquid separator by bolts, adhesion, welding or snap-fitting. Optionally, a printed circuit board assembly PCBA is provided within the housing of the control unit. Optionally, the gas-liquid separator has a base in which a low-pressure refrigerant inlet and a low-pressure refrigerant outlet are provided.