Refrigerant compression pump, thermal management system and method of controlling the same

Abstract

A refrigerant compressor, a thermal management system and a control method thereof. The refrigerant compressor comprises a housing, a motor, a compression component, a controller and an electric heater. The refrigerant compressor has a heating cavity, a low-pressure cavity, a compression cavity and a high-pressure cavity, which are located inside the housing. The motor is located in the low-pressure cavity, and the motor comprises a stator and a rotor. The rotor is connected with the compression component, and the motor can drive the compression component to operate. The compression component at least partially forms a cavity wall of the compression cavity, and the compression cavity and the high-pressure cavity can communicate. The refrigerant compressor has an electrical cavity, and the controller is located in the electrical cavity. The controller is electrically connected with the stator, and the heating cavity and the low-pressure cavity are located on the same side of the electrical cavity. The electric heater and the motor of the refrigerant compressor can share a wire harness connected to an external device, thereby reducing the cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal management, in particular to an integrated structure of a compressor and an electric heater. BACKGROUND

[0002] The thermal management system comprises a compressor, a condenser, a throttling device, an evaporator and an electric heater, the electric heater is divided into an air-cooled electric heater and a liquid-cooled electric heater, the air-cooled electric heater directly heats air, and the liquid-cooled electric heater heats cooling liquid.

[0003] The electric heater and the compressor need to be connected by separate high-voltage wiring harnesses, and the high-voltage wiring harnesses are too many, thereby increasing the cost. SUMMARY

[0004] In a first aspect, the present application provides a refrigerant compressor, comprising:

[0005] A shell, the refrigerant compressor has a heating cavity, a low-pressure cavity, a compression cavity and a high-pressure cavity, and the heating cavity, the low-pressure cavity, the compression cavity and the high-pressure cavity are located inside the shell;

[0006] A motor, the motor is located in the low-pressure cavity, and the motor comprises a stator and a rotor;

[0007] A compression component, the rotor is connected with the compression component, the motor can drive the compression component to operate, the compression component at least partially forms a cavity wall of the compression cavity, and the compression cavity and the high-pressure cavity can communicate;

[0008] A controller, the refrigerant compressor has an electrical cavity, the controller is located in the electrical cavity, and the controller is electrically connected with the stator; and

[0009] An electric heater, the electric heater is at least partially located in the heating cavity, and the heating cavity and the low-pressure cavity are located on the same side of the electrical cavity.

[0010] The refrigerant compressor of the present application comprises a motor, a compression component and an electric heater, the electric heater is at least partially located in the heating cavity, the heating cavity and the low-pressure cavity are located on the same side of the electrical cavity, the electric heater and the motor of the refrigerant compressor can share a wiring harness connected to an external device, thereby reducing the cost.

[0011] In a second aspect, the present application provides a thermal management system, comprising a refrigerant compressor, an evaporator, a condenser and a throttling device, the outlet of the refrigerant compressor communicates with the inlet of the condenser, the outlet of the condenser communicates with the inlet of the throttling device, the outlet of the throttling device communicates with the inlet of the evaporator, and the outlet of the evaporator communicates with the inlet of the refrigerant compressor.

[0012] The refrigerant compression pump has a heating cavity, a low-pressure cavity, a compression cavity, and a high-pressure cavity, the low-pressure cavity is communicated with the compression cavity, and the compression cavity and the high-pressure cavity are capable of being communicated; the refrigerant compression pump comprises a motor, a compression component, and an electric heater, the motor is connected with the compression component, the motor is located in the low-pressure cavity, and the electric heater is located in the heating cavity.

[0013] The refrigerant compression pump comprises a controller, the refrigerant compression pump has an electrical cavity, the controller is located in the electrical cavity, the controller is electrically connected with the motor, and the controller is electrically connected with the electric heater; the heating cavity and the low-pressure cavity are located on the same side of the electrical cavity.

[0014] The refrigerant compression pump of the thermal management system of the application comprises a motor, a compression component, and an electric heater, the electric heater is at least partially located in a heating cavity, the heating cavity and the low-pressure cavity are located on the same side of an electrical cavity, and the electric heater and the motor of the refrigerant compression pump can share a wire harness connected to an external device, thereby reducing the cost.

[0015] In a third aspect, the application provides a control method of a thermal management system, which comprises:

[0016] The controller controls the thermal management system to operate in a heating mode, and the refrigerant compression pump compresses refrigerant, and the refrigerant sequentially flows through a condenser, a throttling device, and an evaporator from the refrigerant compression pump, and then returns to the refrigerant compression pump.

[0017] The refrigerant returning to the refrigerant compression pump is heated by the electric heater in the refrigerant compression pump and then compressed again.

[0018] In the control method of the thermal management system of the application, the refrigerant returning to the refrigerant compression pump is heated by the electric heater in the refrigerant compression pump and then compressed again, and the electric heater and the motor of the refrigerant compression pump can share a wire harness connected to an external device, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the refrigerant compression pump of the application;

[0020] Figure 2 is a principle schematic diagram of the thermal management system of the application;

[0021] Figure 3 is a structural schematic diagram of another embodiment of the refrigerant compression pump of the application;

[0022] Figure 4 is a structural schematic diagram of still another embodiment of the refrigerant compression pump of the application;

[0023] Figure 5 is a structural schematic diagram of still another embodiment of the refrigerant compression pump of the application;

[0024] Figure 6is a schematic diagram of another embodiment of a coolant compression pump of the present application;

[0025] Figure 7 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0026] Figure 8 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0027] Figure 9 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0028] Figure 10 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0029] Figure 11 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0030] Figure 12 is a schematic diagram of another embodiment of a thermal management system of the present application;

[0031] Figure 13 is a schematic diagram of another embodiment of a heater of the present application;

[0032] Figure 14 is a schematic diagram of another embodiment of a heater of the present application;

[0033] Figure 15 is a schematic diagram of another embodiment of a heater of the present application;

[0034] Figure 16 is a schematic diagram of another embodiment of a heater of the present application;

[0035] Figure 17 is a schematic diagram of another embodiment of a heater of the present application;

[0036] Figure 18 is a schematic diagram of another embodiment of a heater of the present application;

[0037] Figure 19 is a schematic diagram of another embodiment of a heater of the present application;

[0038] Figure 20 is a schematic diagram of a fin of the present application;

[0039] Figure 21 is a schematic diagram of a sensor of the present application;

[0040] Figure 22 is a schematic diagram of a sensor of the present application mounted on a circuit board;

[0041] Figure 23is a perspective view of another embodiment of the sensor of the present application;

[0042] Figure 24 is a perspective view of another embodiment of the sensor of the present application;

[0043] Figure 25 is a perspective view of the refrigerant heating pump of the present application;

[0044] Figure 26 is a perspective view of the refrigerant heating pump of the present application;

[0045] Figure 27 is a perspective view of the refrigerant heating pump of the present application, with bold lines indicating different pressure chambers;

[0046] Figure 28 is an exploded view of another embodiment of the gas-liquid separator of the present application;

[0047] Figure 29 is a perspective view of another embodiment of the gas-liquid separator of the present application;

[0048] Figure 30 is a perspective view of another embodiment of the gas-liquid separator of the present application.

[0049] In the figure: refrigerant compression pump 10, heating chamber 11, separation chamber 12, heating separation chamber 13, low-pressure chamber 14, compression chamber 15, high-pressure chamber 16, electrical chamber 17, refrigerant inlet 18, refrigerant outlet 19;

[0050] electric heater 20, heating tube 21, tube body 211, heating wire 212, insulator 213, adapter pin 22, connecting leg 23, heating film 24, carrier 25, fin 26, partition sheet 27, microchannel 28, turbulence member 29;

[0051] controller 30, circuit board 31, control chip 32;

[0052] sensor 40, housing 41, sensitive element 42, connecting terminal 43, first end portion 431, second end portion 432, detection channel 44, circuit board 45, temperature-sensitive element 46, pressure-sensitive element 47, first sensor 48, second sensor 49;

[0053] housing 50, first housing 51, first cavity 511, second housing 52, second cavity 521, third housing 53, third half housing 531, partition plate 54, power supply plug-in end 55, signal plug-in end 56;

[0054] motor 60, stator 61, stator core 62, enameled wire 63, rotor 64, rotating shaft 65;

[0055] The compression component 70, the movable scroll 71, the movable disc body 711, the movable vortex tooth 712, the back pressure communication hole 713, the fixed scroll 72, the fixed disc body 721, the fixed vortex tooth 722, the exhaust hole 723, the exhaust valve piece 74, the back pressure cavity 75;

[0056] The bearing seat 761, the main bearing 762, the auxiliary bearing 763, the eccentric sleeve 764, the oil separation structure 765, the oil return structure 766, the rolling bearing 768, the bearing groove 769;

[0057] The gas-liquid separator 80, the U-shaped tube 81, the first vertical tube 811, the first horizontal tube 812, the second vertical tube 813, the oil return hole 814, the inner cylinder body 82, the balance hole 821, the outer cylinder body 83, the top opening 831, the support piece 834, the filter screen 84, the rotary separation cover 85, the inlet tube 861, the outlet tube 862, the top plate 87, the separation cover 88, the separation tube 89, the first separation tube 891, the first tube cavity 892, the second separation tube 893, the second tube cavity 894;

[0058] The thermal management system 90, the evaporator 91, the condenser 92, the throttling device 93, the first electronic expansion valve 931, the second electronic expansion valve 932, the double-channel heat exchanger 94, the first channel 941, the second channel 942, the four-way reversing valve 951, the first indoor heat exchanger 952, the second indoor heat exchanger 953, the intermediate heat exchanger 955, the battery cooler 956, the battery heat exchanger 957, the motor heat exchanger 958, the water pump 959, the liquid-cooled heat exchanger 961, the outdoor heat exchanger 962, the low-temperature water tank 963, the water tank 964. DETAILED DESCRIPTION

[0059] As shown in Figure 1 The refrigerant compression pump 10 provided in the present application comprises a shell 50, a motor 60, a compression component 70 and an electric heater 20.

[0060] The refrigerant compression pump 10 has a heating cavity 11, a low-pressure cavity 14, a compression cavity 15 and a high-pressure cavity 16, which are located inside the shell 50. The heating cavity 11 communicates with the low-pressure cavity 14, the low-pressure cavity 14 communicates with the compression cavity 15, and the compression cavity 15 and the high-pressure cavity 16 can communicate.

[0061] In the present application, “communication” and “can communicate” represent direct communication or communication controlled by a switch such as a valve. That is, in the present application, A and B communicate, which can be direct communication between A and B, or indirect communication between A and B through other objects C or spaces D.

[0062] For example, the heating cavity 11 is in communication with the low-pressure cavity 14, which can be direct communication or controllable communication through a valve or other switching device. The low-pressure cavity 14 is in communication with the compression cavity 15, which can be direct communication or controllable communication through a valve or other switching device. The compression cavity 15 and the high-pressure cavity 16 can be in communication, which means that the compression cavity 15 and the high-pressure cavity 16 are controllable communication through a valve or other switching device.

[0063] The motor 60 is located in the low-pressure cavity 14, and the electric heater 20 is located in the heating cavity 11. The shell 50 has a refrigerant inlet 18 and a refrigerant outlet 19. The high-pressure cavity 16 is in communication with the refrigerant outlet 19, and the heating cavity 11 is in communication with the refrigerant inlet 18. The heating cavity 11, the low-pressure cavity 14, the compression cavity 15, and the high-pressure cavity 16 are located inside the shell 50, and the compression component 70 at least partially forms the cavity wall of the compression cavity 15.

[0064] In combination Figure 1 And Figure 2 As shown in FIG. 1, in winter, the condenser 92 of the thermal management system 90 needs to heat the indoor space, and the evaporator 91 needs to absorb heat from the outside. However, due to the low temperature outside, it is difficult for the thermal management system 90 to absorb heat from the outside.

[0065] In the related art, in winter, a high-voltage air-side heater or a high-voltage water-side heater is used to heat the indoor space. Such a high-voltage electric heater requires a separate high-voltage wire harness, and the compressor also requires a high-voltage wire harness, which results in two sets of high-voltage wire harnesses and high cost.

[0066] The high-voltage air-side heater has the following disadvantages: (a) the cost of a separate high-voltage electric heater is high; (b) the compressor and the electric heater require two sets of high-voltage wire harnesses, which is high in cost; (c) the air-side heater is located in the passenger cabin, which causes safety hazards of high voltage in the passenger cabin; and (d) the air-side electric heater is prone to producing odors, which reduces passenger comfort.

[0067] The high-voltage water-side heater has the following disadvantages: (a) the cost of a separate high-voltage electric heater is high; and (b) the compressor and the electric heater require two sets of high-voltage wire harnesses, which is high in cost.

[0068] There are also related art designs that use a compressor in a low-efficiency operation mode for heating, which has the following shortcomings: (a) the power motor has large mass and large heat capacity, causing slow temperature rise; (b) the power motor has large size, causing large heat leakage to the environment and energy waste; (c) the compressor and the electric heater require two sets of high-voltage wiring harnesses, which have high cost; (d) the power of the low-voltage air-side heater is limited by the large current, and the power is insufficient, and when the temperature of the power motor has not risen enough, the low-voltage air-side heater can only supplement part of the heating, so that the passengers can feel the warm air, but the temperature is still insufficient to achieve good comfort; (e) the air-side electric heater is prone to producing odors, which reduces passenger comfort; and (f) the intentional low-efficiency operation of the power motor increases the complexity of software control.

[0069] The refrigerant in the thermal management system 90 of the present application enters the heating chamber 11 from the refrigerant inlet 18 of the refrigerant compression pump, and the refrigerant heated by the electric heater 20 enters the compression chamber 15 after entering the low-pressure chamber 14. The motor 60 drives the compression component 70 to compress the low-temperature and low-pressure refrigerant entering the compression chamber 15 from the low-pressure chamber 14, forming high-temperature and high-pressure refrigerant. The shut-off device between the high-pressure chamber 16 and the compression chamber 15 is opened under the action of the high-temperature and high-pressure refrigerant, thereby releasing the compressed refrigerant in the compression chamber 15 to the high-pressure chamber 16. The refrigerant in the high-pressure chamber 16 is circulated to the thermal management system 90 through the refrigerant outlet 19 of the refrigerant compression pump 10.

[0070] The refrigerant compression pump 10 has a refrigerant inlet 18 and a refrigerant outlet 19. The refrigerant inlet 18 is in communication with the heating chamber 11, and the refrigerant outlet 19 is in communication with the high-pressure chamber 16. When the refrigerant compression pump 10 is working, the low-temperature and low-pressure refrigerant enters the low-pressure chamber 14 through the refrigerant inlet 18, enters the compression chamber 15 after flowing through the motor 60 to dissipate heat to the motor 60, and the motor 60 drives the compression component 70 to move to compress the refrigerant in the compression chamber 15 into high-temperature and high-pressure refrigerant, which enters the high-pressure chamber 16 under certain conditions, and the high-temperature and high-pressure refrigerant is delivered to the thermal management system 90 through the refrigerant outlet 19. Reasons

[0071] The refrigerant compression pump 10 includes a motor 60, a compression component 70, and an electric heater 20 for heating the refrigerant. The motor 60 is connected to the compression component 70, the motor 60 is located in the low-pressure chamber 14, the compression component 70 forms the compression chamber 15, and the electric heater 20 is located in the heating chamber 11. The electric heater 20 is used to heat the refrigerant entering the heating chamber 11. By providing the electric heater 20 inside the refrigerant compression pump 10, the refrigerant can be heated by the electric heater 20 even at very low temperatures when the refrigerant compression pump 10 is running in the heating mode in the thermal management system 90, thereby improving the heating speed of the thermal management system 90.

[0072] ​The heated refrigerant entering the compression chamber 15 increases the suction pressure of the refrigerant compressor pump 10, overcoming the limitation that the refrigerant compressor pump 10 cannot operate in low-temperature environments. The heated refrigerant entering the compression chamber 15 increases the suction pressure of the refrigerant compressor pump 10, increasing the flow rate and thus increasing the work done by the refrigerant compressor pump 10. According to the law of conservation of energy, after deducting the work done by the refrigerant compressor pump 10, the heating power requirement of the electric heater 20 is correspondingly reduced, thereby reducing the cost and size of the electric heater 20.

[0073] The electric heater 20 in this application is a high-voltage heating element, capable of achieving high heating power. It eliminates the need for a low-voltage electric heater 20, thus meeting thermal management comfort requirements. As a high-voltage heating element, the electric heater 20 achieves high heating power, eliminating the need for the inefficient operation of the power motor 60 and simplifying software control complexity. It also eliminates the safety risk of high voltage entering the passenger cabin and removes odors caused by the wind-side electric heater 20, ensuring comfort.

[0074] The refrigerant compression pump 10 includes a controller 30, which has an electrical cavity 17. The controller 30 is located in the electrical cavity 17 and is electrically connected to a motor 60 and an electric heater 20. The motor 60 and the electric heater 20 share the same controller 30. The electric heater 20 and the motor 60 can share a single high-voltage wiring harness, thereby reducing costs.

[0075] The heating chamber 11 and the low-pressure chamber 14 are located on the same side of the electrical chamber 17. That is, the electric heater 20 located in the heating chamber 11 and the motor 60 located in the low-pressure chamber 14 are located on the same side of the controller 30, which reduces the difficulty of connecting the electric heater 20 and the motor 60 to the circuit board 31 when the electric heater 20 and the motor 60 are located on different sides of the controller 30.

[0076] The controller 30 includes a circuit board 31 and a control chip 32. The control chip 32 is connected to the circuit board 31. The electric heater 20 and the motor 60 are located on the same side of the circuit board 31. This arrangement facilitates the connection of the electric heater 20 and the motor 60 and reduces the length of the connecting wires. The controller 30 can be electrically connected to an external power source to provide power. The controller 30 can also communicate with an external signal source or a controlled terminal to provide control signals to the external signal source or output control signals to the controlled terminal.

[0077] like Figure 3 As shown, this is another embodiment of the refrigerant compression pump 10 of this application.

[0078] The refrigerant compression pump 10 comprises a gas-liquid separator 80, a motor 60 connected with a compression component 70, the motor 60 is located in a low-pressure cavity 14, the compression component 70 at least partially forms a cavity wall of a compression cavity 15, and the gas-liquid separator 80 is located in a separation cavity 12. The separation cavity 12 is communicated with a refrigerant inlet 18, the separation cavity 12 is communicated with the low-pressure cavity 14, the low-pressure cavity 14 is communicated with the compression cavity 15, the compression cavity 15 can be communicated with a high-pressure cavity 16, and the high-pressure cavity 16 is communicated with a refrigerant outlet 19.

[0079] By directly arranging the gas-liquid separator 80 in the refrigerant compression pump 10, the gas-liquid separator 80 and the refrigerant compression pump 10 can share the shell 50, so that the outer cylinder body 83 structure of the gas-liquid separator 80 in the heat management system 90 can be saved, and the connecting pipeline of the gas-liquid separator 80 and the refrigerant compression pump 10 in the heat management system 90 can be saved, thereby reducing the manufacturing cost and reducing the risk of refrigerant leakage caused by too many pipeline connection points.

[0080] As shown in FIG. 1, it is another embodiment of the refrigerant compression pump 10 of the present application. Figure 4

[0081] The refrigerant compression pump 10 has a heating cavity 11 and a separation cavity 12, the heating cavity 11 is communicated with a refrigerant inlet 18 of the refrigerant compression pump 10, an outlet of the heating cavity 11 is communicated with the separation cavity 12, an outlet of the separation cavity 12 is communicated with a low-pressure cavity 14, the low-pressure cavity 14 is communicated with a compression cavity 15, the compression cavity 15 can be communicated with a high-pressure cavity 16, and the high-pressure cavity 16 is communicated with a refrigerant outlet 19. The separation cavity 12 is located between the heating cavity 11 and the low-pressure cavity 14, which can not only separate gas and liquid, but also store liquid refrigerant.

[0082] The separation cavity 12 is located between the heating cavity 11 and the low-pressure cavity 14, by arranging the separation cavity 12 and the heating cavity 11, and arranging the gas-liquid separator 80 in the separation cavity 12 and the electric heater 20 in the heating cavity 11, the refrigerant entering the compressor can be heated by the electric heater 20 first, and then separated into gaseous refrigerant and liquid refrigerant by the gas-liquid separator 80, thereby improving the proportion of liquid refrigerant converted into gaseous refrigerant, reducing the refrigerant injection amount, and saving the cost.

[0083] The refrigerant compression pump 10 comprises a shell 50, the heating cavity 11, the low-pressure cavity 14, the compression cavity 15 and the high-pressure cavity 16 are located inside the shell 50; the refrigerant compression pump 10 comprises a partition plate 54, the partition plate 54 is located between the heating cavity 11 and the separation cavity 12. The arrangement of the partition plate 54 reduces the problem of uneven separation and uneven heating caused by the mixing of refrigerants in the heating cavity 11 and the separation cavity 12, so that the separation and heating are more uniform.

[0084] As shown in FIG. 2, it is another embodiment of the refrigerant compression pump 10 of the present application. Figure 5

[0085] ​​The refrigerant compression pump 10 has a heating cavity 11 and a separation cavity 12, the separation cavity 12 is communicated with the refrigerant inlet 18 of the refrigerant compression pump 10, the outlet of the separation cavity 12 is communicated with the heating cavity 11, the outlet of the heating cavity 11 is communicated with the low-pressure cavity 14, the low-pressure cavity 14 is communicated with the compression cavity 15, the compression cavity 15 can be communicated with the high-pressure cavity 16, and the high-pressure cavity 16 is communicated with the refrigerant outlet 19.

[0086] The heating cavity 11 is located between the separation cavity 12 and the low-pressure cavity 14, by arranging the separation cavity 12 and the heating cavity 11, and arranging the gas-liquid separator 80 in the separation cavity 12 and the electric heater 20 in the heating cavity 11, the refrigerant entering the refrigerant compression pump 10 can first pass through the gas-liquid separator 80 for gas-liquid separation of liquid refrigerant and gaseous refrigerant, and then pass through the electric heater 20 for heating. The gaseous refrigerant after gas-liquid separation is heated by the electric heater 20, which improves the indoor heating speed of the heating management system 90 in the low-temperature state of the refrigerant compression pump 10 in winter, and also improves the safety of the electric heater 20 for heating the refrigerant, and reduces the safety impact of the liquid refrigerant on the electric heater 20.

[0087] The refrigerant compression pump 10 includes a shell 50, and the heating cavity 11, the low-pressure cavity 14, the compression cavity 15 and the high-pressure cavity 16 are located inside the shell 50; the refrigerant compression pump 10 includes a partition plate 54, and the partition plate 54 is located between the heating cavity 11 and the separation cavity 12. The arrangement of the partition plate 54 reduces the problems of uneven separation and uneven heating caused by the mixing of refrigerants in the heating cavity 11 and the separation cavity 12, so that the separation and heating are more uniform.

[0088] As shown in Figure 6 , it is another embodiment of the refrigerant compression pump 10 of the present application.

[0089] The refrigerant compression pump 10 has a heating separation cavity 13, the heating separation cavity 13 is communicated with the refrigerant inlet 18 of the refrigerant compression pump 10, the outlet of the heating separation cavity 13 is communicated with the low-pressure cavity 14, the low-pressure cavity 14 is communicated with the compression cavity 15, the compression cavity 15 can be communicated with the high-pressure cavity 16, and the high-pressure cavity 16 is communicated with the refrigerant outlet 19. By arranging the heating separation cavity 13, the heating cavity 11 and the separation cavity 12 are integrated, and the connecting partition plate is saved, so that the structure is simpler. As described above, the electric heater 20 can be closer to the refrigerant inlet 18 relative to the gas-liquid separator 80, and the electric heater 20 can be farther away from the refrigerant inlet 18 relative to the gas-liquid separator 80, each has advantages and disadvantages. The electric heater 20 is arranged at the bottom of the heating separation cavity 13, so that the liquid refrigerant after gas-liquid separation can be heated and evaporated into gaseous refrigerant, so that the proportion of gaseous refrigerant can be increased, and the refrigerant charge can be reduced.

[0090] The refrigerant compressor 10 comprises an electric heater 20 and a controller 30, the refrigerant compressor 10 has an electric cavity 17, the controller 30 is located in the electric cavity 17, the motor 60 and the controller 30 are electrically connected. The electric heater 20 is located in the separation cavity 12, the electric heater 20 is electrically connected with the controller 30, and the electric heater 20 can be arranged at the top or bottom of the separation cavity 12.

[0091] The liquid refrigerant will deposit at the bottom of the cavity, so that the electric heater 20 arranged at the bottom of the separation cavity 12 will be immersed in the liquid refrigerant, thereby improving the heat exchange efficiency.

[0092] As shown in Figure 2 The present application provides a thermal management system 90, which comprises a refrigerant compressor 10, an evaporator 91, a condenser 92 and a throttling device 93. The outlet of the refrigerant compressor 10 is communicated with the inlet of the condenser 92, the outlet of the condenser 92 is communicated with the inlet of the throttling device 93, the outlet of the throttling device 93 is communicated with the inlet of the evaporator 91, and the outlet of the evaporator 91 is communicated with the inlet of the refrigerant compressor 10. In the present application, the communication represents direct communication through a pipeline or communication controlled by a switch such as a valve.

[0093] The refrigerant compressor 10 comprises a motor 60, a compression component 70 and an electric heater 20, the compression component 70 is connected with the motor 60, the refrigerant compressor 10 has a heating cavity 11, a low-pressure cavity 14 and a high-pressure cavity 16, the heating cavity 11 is communicated with the inlet of the refrigerant compressor 10, and the high-pressure cavity 16 is communicated with the outlet of the refrigerant compressor 10. The motor 60 is located in the low-pressure cavity 14, and the electric heater 20 is located in the heating cavity 11.

[0094] The refrigerant compressor 10 of the thermal management system 90 of the present application comprises a motor 60, a compression component 70 and an electric heater 20, the electric heater 20 heats the refrigerant entering the heating cavity 11, and the present application sets the electric heater 20 inside the refrigerant compressor 10. When the heating mode is operated in the thermal management system 90, the refrigerant can be heated by the electric heater 20 even at a very low temperature, so that the heating speed of the thermal management system 90 is improved, and the indoor environment is quickly heated by the condenser 92.

[0095] The heated refrigerant enters the compression cavity 15, which can improve the suction pressure of the refrigerant compressor 10 and can overcome the limitation that the refrigerant compressor 10 cannot work in a low-temperature environment. The heated refrigerant enters the compression cavity 15, which can improve the suction pressure of the refrigerant compressor 10, increase the flow and increase the work of the refrigerant compressor 10. According to the law of conservation of energy, the heating power requirement of the electric heater 20 is correspondingly reduced, and the cost and volume of the electric heater 20 can be reduced.

[0096] The electric heater 20 is a high-voltage heating element, capable of achieving high heating power. It eliminates the need for a low-voltage electric heater 20, thus meeting thermal management comfort requirements. The high-voltage heating element 20 also eliminates the inefficient operation of the power motor 60, simplifying software control complexity. This eliminates the safety risk of high voltage entering the passenger cabin and removes odors caused by the wind-side electric heater 20, ensuring comfort.

[0097] like Figure 7 The diagram shows another embodiment of the thermal management system 90 conforming to this application.

[0098] The thermal management system 90 includes a dual-channel heat exchanger 94, which comprises a first channel 941 and a second channel 942. The outlet of the condenser 92 is connected to the inlet of the first channel 941, and the outlet of the first channel 941 is connected to the inlet of the throttling device 93. The outlet of the evaporator 91 is connected to the inlet of the second channel 942, and the outlet of the second channel 942 is connected to the inlet of the refrigerant compressor pump 10. By setting up the dual-channel heat exchanger 94 in the thermal management system 90, the high-temperature, high-pressure refrigerant exiting the condenser 92 first exchanges heat with the low-temperature, low-pressure refrigerant before the inlet of the refrigerant compressor pump 10 to compensate for the insufficient heat absorption of the evaporator 91, thereby improving the energy efficiency ratio of the thermal management system 90.

[0099] like Figure 8 The diagram shows another embodiment of the thermal management system 90 conforming to this application.

[0100] The thermal management system 90 includes a dual-channel heat exchanger 94, which includes a first channel 941 and a second channel 942. The outlet of the condenser 92 is connected to the inlet of the throttling device 93, and the outlet of the throttling device 93 is connected to the inlet of the first channel 941. The outlet of the first channel 941 is connected to the inlet of the evaporator 91, and the outlet of the evaporator 91 is connected to the inlet of the second channel 942. The outlet of the second channel 942 is connected to the inlet of the refrigerant compressor pump 10.

[0101] By installing a dual-channel heat exchanger 94 in the thermal management system 90, the high-temperature, high-pressure refrigerant throttled out by the throttling device 93 first exchanges heat with the low-temperature, low-pressure refrigerant before the inlet of the refrigerant compression pump 10 to compensate for the insufficient heat absorption of the evaporator 91, thereby improving the energy efficiency ratio of the thermal management system 90. The throttling device 93 can be an electronic expansion valve, a thermostatic expansion valve, or a capillary tube.

[0102] like Figure 9 The diagram shows another embodiment of the thermal management system 90 conforming to this application.

[0103] The throttling device 93 includes a first electronic expansion valve 931 and a second electronic expansion valve 932, the second electronic expansion valve 932 is arranged in parallel with the first electronic expansion valve 931, the first electronic expansion valve 931 is connected between the outlet of the condenser 92 and the inlet of the evaporator 91, and the second electronic expansion valve 932 is connected between the outlet of the condenser 92 and the inlet of the refrigerant compressor 10. The branch of the second electronic expansion valve 932 and the branch of the first electronic expansion valve 931 are arranged in parallel, by controlling the high-temperature refrigerant outlet from the condenser 92 to directly enter the heating chamber 11, the suction temperature of the refrigerant compressor 10 is improved, and cooperates with the electric heater 20, so as to improve the energy efficiency ratio of the thermal management system 90.

[0104] As shown in Figure 10 , another embodiment of the thermal management system 90 of the present application is shown.

[0105] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 includes a refrigerant compressor 10, a four-way reversing valve 951, a first indoor heat exchanger 952, a second indoor heat exchanger 953, a throttling device 93, an intermediate heat exchanger 955, a battery cooler 956, a battery heat exchanger 957, a motor heat exchanger 958, a water pump 959, a liquid cooling heat exchanger 961, an outdoor heat exchanger 962, a low-temperature water tank 963, a water tank 964, and a water valve 965. The thermal management system 90 is a refrigerant direct heating and refrigeration system with high energy efficiency ratio. The four-way reversing valve 951 can also be formed by a plurality of check valves or a combination of check valves and three-way valves.

[0106] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located in the air conditioning box 966, the outdoor heat exchanger 962, the low-temperature water tank 963 and the fan 967 constitute a front-end module 968. The intermediate heat exchanger 955 acts as a double-flow heat exchanger 94, and the first indoor heat exchanger 952, the second indoor heat exchanger 953 and the outdoor heat exchanger 962 act as evaporators or condensers under different working conditions.

[0107] As shown in Figure 11 , another embodiment of the thermal management system 90 of the present application is shown.

[0108] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 includes a refrigerant compressor 10, a first indoor heat exchanger 952, a second indoor heat exchanger 953, a throttling device 93, a battery cooler 956, a battery heat exchanger 957, a motor heat exchanger 958, a water pump 959, a liquid cooling heat exchanger 961, an outdoor heat exchanger 962, a low-temperature water tank 963, and a water valve 965. The thermal management system 90 is a double-secondary water circuit system, indoor heating and refrigeration are realized by refrigerant heat exchange to cooling liquid, avoiding refrigerant entering the air conditioning box 966, reducing the safety risk of refrigerant leakage.

[0109] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located in the air conditioner box 966, and the outdoor heat exchanger 962, the low-temperature water tank 963 and the fan constitute a front-end module 968. The battery cooler 956 and the liquid-cooled heat exchanger 961 function as an evaporator or a condenser respectively under different working conditions.

[0110] As shown in Figure 12 , another embodiment of the thermal management system 90 according to the present application is shown.

[0111] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 comprises a refrigerant compressor 10, a four-way reversing valve 951, a first indoor heat exchanger 952, a second indoor heat exchanger 953, a throttling device 93, a battery cooler 956, a battery heat exchanger 957, a motor heat exchanger 958, a water pump 959, a liquid-cooled heat exchanger 961, an outdoor heat exchanger 962, a low-temperature water tank 963, and a water valve 965. The thermal management system 90 is a primary water circuit system. When refrigerating, the refrigerant directly cools the air conditioner box 966, and the energy efficiency is high. When heating, the cooling liquid is used for heating, which can reduce the safety hazard caused by the refrigerant entering the air conditioner box. The four-way reversing valve 951 can also be formed by a plurality of one-way valves or a combination of one-way valves and three-way valves.

[0112] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located in the air conditioner box 966, and the outdoor heat exchanger 962, the low-temperature water tank 963 and the fan constitute a front-end module. The first indoor heat exchanger 952, the second indoor heat exchanger 953 and the outdoor heat exchanger 962 function as an evaporator or a condenser respectively under different working conditions.

[0113] As shown in Figure 13 and Figure 14 , an embodiment of the electric heater 20 according to the present application is shown.

[0114] The electric heater 20 comprises a heating pipe 21 and a connecting leg 23. The heating pipe 21 comprises a pipe body 211, a heating wire 212 and an insulator 213. The insulator 213 is arranged between the heating wire 212 and the pipe body 211. The heating wire 212 is physically and electrically connected to the connecting leg 23. That is, the electric heater 20 can be a PTC thermistor electric heater 20, which has a simple structure and low cost.

[0115] Please refer to Figure 1 and Figure 13As shown in the figures, the controller 30 comprises a circuit board 31 and a control chip 32 connected to the surface of the circuit board 31, and the connecting pin 23 is in contact with and electrically connected to the circuit board 31. The circuit board 31 is electrically connected to the power plug end 55, so that the electric heater 20 and the circuit board 31 of the refrigerant compressor 10 can share the high-voltage power line harness, the structure is simpler, and the cost is reduced. The connecting pin 23 is connected to the heating wire 212 and the adapter pin 22, and the connecting pin 23 is directly connected to the circuit board 31, thereby reducing the connecting cable between the electric heater 20 and the circuit board 31, and further reducing the cost.

[0116] Please refer to Figure 1 , Figure 13 and Figure 20 , optionally, the electric heater 20 comprises a heating pipe 21, a fin 26 and a connecting pin 23. One end of the connecting pin 23 is connected to the heating pipe 21, and the other end of the connecting pin 23 is connected to the controller 30. A plurality of fins 26 can be covered on the outside of the heating pipe 21, thereby increasing the heat exchange area between the refrigerant and the electric heater 20, and improving the heat exchange efficiency.

[0117] As shown in Figure 15 and Figure 16 , another embodiment of the electric heater 20 according to the present application is shown.

[0118] The electric heater 20 comprises a heating film 24, a carrier 25 and a connecting pin 23, the heating film 24 is attached to the carrier 25, and the heating film 24 is electrically connected to the connecting pin 23. The controller 30 comprises a circuit board 31 and a chip connected to the surface of the circuit board 31, and the connecting pin 23 is physically and electrically connected to the circuit board 31. The heating film 24 can be printed on the carrier 25 by printing, thereby reducing the volume of the heater and adapting to the miniaturization design of the refrigerant compressor 10 integrated with the compressor and the heater. The carrier 25 can be made of aluminum material or glass material, thereby meeting the lightweight design. Optionally, the carrier 25 is in the shape of a rectangular parallelepiped.

[0119] The electric heater 20 can further be provided with a partition plate 27 on the carrier 25, thereby forming a plurality of micro-channels 28 for the distribution and flow of the refrigerant.

[0120] As shown in Figure 17 and Figure 18 , another embodiment of the electric heater 20 according to the present application is shown.

[0121] The electric heater 20 comprises a heating film 24, a carrier 25 and a connecting pin 23, the heating film 24 is attached to the carrier 25, the heating film 24 is electrically connected with the connecting pin 23, the controller 30 comprises a circuit board 31 and a chip connected to the surface of the circuit board 31, the connecting pin 23 is physically and electrically connected with the circuit board 31. The heating film 24 can be printed on the carrier 25 by printing, so as to reduce the volume of the heater and adapt to the miniaturization design of the refrigerant compressor pump 10 integrated with the compressor and the heater. The carrier 25 can be made of aluminum material or glass material, so as to meet the lightweight design. Alternatively, the carrier 25 is in the shape of a circular tube.

[0122] The electric heater 20 can further be provided with a spoiler 29 in the carrier 25, so as to disturb the flow of the refrigerant and enhance the heat exchange between the refrigerant and the heating film.

[0123] As shown in Figure 19 and Figure 20 , another embodiment of the electric heater 20 according to the present application is shown.

[0124] The electric heater 20 comprises a heating pipe 21 and a fin 26, a plurality of micro-channels 28 are formed inside the heating pipe 21 for the distribution and flow of the refrigerant. The fin 26 can increase the heat exchange area between the refrigerant and the electric heater 20, so as to improve the heat exchange efficiency.

[0125] As shown in Figure 1 and Figure 21 , the refrigerant compressor pump 10 comprises a sensor 40 for detecting the temperature or pressure of the refrigerant, the sensor 40 is at least partially located in the low-pressure cavity 14 or the high-pressure cavity 16, the sensor 40 is electrically connected with the controller 30, and the controller 30 is electrically connected with the motor 60. The sensor 40 for sensing the temperature or pressure of the refrigerant is integrated into the refrigerant compressor pump 10 according to the present application, and the pressure or temperature information is sent through an external communication interface, thereby saving the wire harness cost of the client.

[0126] The sensor 40 comprises a first sensor 48 and a second sensor 49, the first sensor 48 is at least partially located in the low-pressure cavity 14, and the second sensor 49 is at least partially located in the high-pressure cavity 16. The first sensor 48 is electrically connected with the controller 30, the second sensor 49 is electrically connected with the controller 30, the first sensor 48 can sense the temperature and pressure of the refrigerant in the low-pressure cavity 14, and the second sensor 49 can sense the temperature and pressure of the refrigerant in the high-pressure cavity 16. That is, the first sensor 48 and the second sensor 49 are both temperature and pressure sensors 40, the sensor 40 in the thermal management system 90 is integrated into the refrigerant compressor pump 10, the temperature and pressure signals of the refrigerant in the low-pressure cavity 14 and the high-pressure cavity 16 are detected by the first sensor 48 and the second sensor 49 respectively, so as to facilitate the control of the thermal management system 90. The P / T sensor on the low-pressure side and the high-pressure side is integrated according to the present application, and the pressure and temperature information is sent through an external communication interface, thereby saving the wire harness cost of the client.

[0127] As shown in Figures 21 to 24 each sensor 40 includes a housing 41, a sensitive element 42 and a connecting terminal 43, the housing 41 includes a detection channel 44, the detection channel 44 communicates with the low pressure cavity 14 or the high pressure cavity 16. The sensitive element 42 is at least partially located inside the housing 41, the connecting terminal 43 is electrically connected with the sensitive element 42, the connecting terminal 43 is physically connected and electrically connected with the circuit board 31.

[0128] The sensor 40 includes a circuit board 45, the sensitive element 42 includes a temperature sensitive element 46 and a pressure sensitive element 47, the temperature sensitive element 46 and the pressure sensitive element 47 are electrically connected with the circuit board 45. The circuit board 45 can be a printed circuit board or a ceramic circuit board. Please refer to Figure 22 As shown in the connecting terminal 43 includes a first end portion 431 and a second end portion 432 located at opposite sides of the connecting terminal 43, the first end portion 431 is physically and electrically connected with the circuit board 45, the second end portion 432 is physically and electrically connected with the circuit board 31 of the controller 30. The connecting terminal 43 is one of a coil spring or a metal spring sheet, the first end portion 431 of the connecting terminal 43 is elastically abutted or welded fixed with the circuit board 45, the second end portion 432 of the connecting terminal 43 is elastically abutted or welded fixed with the circuit board 31. The connecting terminal 43 is directly connected with the circuit board 31 of the controller 30, which saves the connecting cable, the structure is simpler, and the cost is reduced.

[0129] Figure 21 As shown in Figure 23 the temperature sensitive element 46 can be a pin type thermistor (NTC), as shown in Figure 24 the temperature sensitive element 46 can also be a patch type thermistor chip (MEMS chip). As shown in Figure 23 the pressure sensitive element 47 can be a ceramic capacitive pressure sensitive element, as shown in the pressure sensitive element 47 can also be a patch type pressure sensitive chip (MEMS chip). The ceramic capacitive pressure sensitive element has a lower cost, and the patch type pressure sensitive chip is easier to install and integrate.

[0130] Figure 23 As shown in Figure 11 the temperature sensitive element 46 and the pressure sensitive element 47 can be integrated into a MEMS chip sensitive element 42, so that the structure is simpler. The pressure sensitive element 47 can be installed on the front side of the circuit board 45 facing the refrigerant, as shown in Figure 13As shown, the pressure-sensitive element 47 can also be placed on the back pressure side of the circuit board 45 facing the refrigerant. Placing the pressure-sensitive element 47 on the back pressure side reduces the impact of the refrigerant on the binding wires of the pressure-sensitive element 47, thus protecting the pressure-sensitive element 47. Placing the pressure-sensitive element 47 on the front side can improve the sensor's detection response speed.

[0131] The compression component 70 can be in various forms, such as scroll type, swashplate type, rotary blade type, crankshaft connecting rod type, axial piston type, rotor type 64 type, etc.

[0132] like Figures 25 to 27 As shown, taking the scroll type as an example, the refrigerant compression pump 10 includes a housing 50, a motor 60, a bearing housing 761, a main bearing 762, a secondary bearing 763, an eccentric sleeve 764, a compression component 70, an oil separator structure 765, and an oil return structure 766.

[0133] The compression component 70 includes a moving scroll 71 and a stationary scroll 72 that mesh with each other, forming a compression chamber 15. The outer casing 50 includes a first casing 51, a second casing 52, and a third casing 53. A main bearing housing 761 is clamped between the first casing 51 and the second casing 52, and the third casing 53 is fixed to the second casing 52 by bolts. Figure 26 As shown, the outer surface of the main bearing housing 761 can also form part of the outer shell 50. Both the first shell 51 and the second shell 52 are cylindrical, and each has a first cavity 511 and a second cavity 521. The moving scroll 71 and the stationary scroll 72 are located in the first cavity 511 of the first shell 51, while the rotor 64 and stator 61 of the motor 60 are located in the second cavity 521 of the second shell 52. The third shell 53 includes two interlocking third half-shells 531, and has an electrical cavity 17 in which the controller 30 is located.

[0134] The motor 60 includes a stator 61, a rotor 64, and a shaft 65. One end of the shaft 65 is connected to the rotor 64, and the other end is connected to the compression component 70. The stator 61 includes a stator core 62 and enameled wire 63. The enameled wire 63 is electrically connected to the circuit board 31 via an adapter. The rotor 64 is fixedly connected to the shaft 65. A secondary bearing 763 is fixed to the third housing 53, and one end of the shaft 65 is rotatably connected to the secondary bearing 763. A main bearing 762 is located inside the bearing housing 761, and the shaft 65 passes through the main bearing 762.

[0135] The compression component 70 comprises a moving scroll 71 and a stationary scroll 72, and the compression chamber 15 is at least partially located between the moving scroll 71 and the stationary scroll 72, and the compression component 70 forms a chamber wall of the compression chamber 15. The moving scroll 71 comprises a moving disc body 711 and moving scroll teeth 712, and the stationary scroll 72 comprises a stationary disc body 721 and stationary scroll teeth 722, and the moving scroll teeth 712 and the stationary scroll teeth 722 are engaged. The moving scroll 71 is connected with the rotating shaft 65, the stationary scroll 72 has an exhaust hole 723, and the refrigerant compression pump 10 comprises an exhaust valve plate 74 which cooperates with the exhaust hole and is used for controlling the connection or disconnection of the high-pressure chamber 16 and the compression chamber 15. When the refrigerant compressed in the compression chamber 15 is at high temperature and high pressure, the exhaust valve plate 74 can be punched open, so as to release the refrigerant to the high-pressure chamber 16.

[0136] The compressor further comprises an eccentric sleeve 764 and a rolling bearing 768, and the moving disc body 711 is provided with a bearing groove 769 on the side close to the main bearing 762, the rolling bearing 768 is located in the bearing groove 769, and the eccentric sleeve 764 is connected with the rotating shaft 65 at one end and connected with the rolling bearing 768 at the other end. The rotation of the rotor 64 drives the movement of the rotating shaft 65, the movement of the rotating shaft 65 drives the eccentric movement of the eccentric sleeve 764, so as to drive the scroll movement of the moving scroll 71 around the stationary scroll 72, and the refrigerant entering the compression chamber 15 is compressed.

[0137] The oil separation structure 765 is located in the high-pressure chamber 16, and separates the lubricating oil from the refrigerant entering the high-pressure chamber 16. The oil return structure 766 is located between the first shell 51, the first shell 51 and the bearing seat 761 and in the bearing seat 761, and the oil return structure 766 is a plurality of through hole structures which guide the lubricating oil separated from the oil gas in the high-pressure chamber 16 to the low-pressure chamber 14 or the compression chamber 15, so as to lubricate the moving parts such as the bearing and the moving scroll 71, and reduce the wear between the parts.

[0138] The refrigerant compression pump 10 can be provided with a back pressure chamber 75 located between the moving scroll 71 and the bearing seat 761, and the back pressure communication hole 713 is arranged on the moving scroll 71 to communicate the back pressure chamber 75 and the compression chamber 15, so as to provide a pushing force for the moving scroll 71 to approach the stationary scroll 72, and reduce the risk of refrigerant leakage caused by the disengagement of the moving scroll 71 and the stationary scroll 72 due to too high pressure in the compression chamber 15.

[0139] As Figure 1 and Figure 25As shown, the refrigerant compressor 10 includes a power plug end 55 and a signal plug end 56, both of which are connected with the shell 50, the power plug end 55 is electrically connected with the circuit board 31, and the signal plug end 56 is electrically connected with the circuit board 31. The power plug end 55 realizes that the high-voltage wire harness of the motor 60 and the electric heater 20 in the refrigerant compressor 10 can share one high-voltage wire harness, thereby saving the cost of the high-voltage wire harness. The sensor 40 is electrically connected with the signal plug end 56, and the signal plug end 56 can realize that the low-voltage wire harness of the circuit board 31 and the sensor 40 shares one wire harness, thereby saving the cost of the low-voltage wire harness.

[0140] As shown in Figures 3 to 6 As shown, the gas-liquid separator 80 includes a U-shaped tube 81, an inlet of the U-shaped tube 81 is communicated with the refrigerant inlet 18 of the refrigerant compressor 10, and an outlet of the U-shaped tube 81 is communicated with the low-pressure cavity 14. The gas-liquid separator 80 of the U-shaped tube 81 has simple structure, easy processing, and lower cost.

[0141] The U-shaped tube 81 includes a first vertical tube 811, a second vertical tube 813, and a first horizontal tube 812, the first horizontal tube 812 is connected between the bottom of the first vertical tube 811 and the bottom of the second vertical tube 813, and the first horizontal tube 812 is provided with an oil return hole 814. Alternatively, the oil return hole 814 can also be arranged on the first vertical tube 811 and the second vertical tube 813, thereby improving the oil return rate of the refrigerant compressor 10.

[0142] The refrigerant compressor 10 of the present application has the function of the gas-liquid separator, can replace the gas-liquid separator in the thermal management system, and saves the cost.

[0143] As shown in Figure 28 and Figure 29 As shown, another embodiment of the gas-liquid separator 80 of the present application.

[0144] The gas-liquid separator 80 includes an inner cylinder 82, an outer cylinder 83, a filter screen 84, and a vortex separator 85. The bottom of the inner cylinder 82 is inserted into the interior of the outer cylinder 83, and the top of the inner cylinder 82 is connected to the vortex separator 85. The filter screen 84 is connected to the bottom of the outer cylinder 83, and the vortex separator 85 is fixed to the outer casing 50. Refrigerant entering from the refrigerant inlet 18 is first vortexed by the vortex separator 85. The liquid refrigerant falls to the bottom of the separation chamber 12, while the gaseous refrigerant enters from the top opening 831 of the outer cylinder 83 into the outer cylinder cavity 832 of the outer cylinder 83, then enters the inner cylinder cavity 822 of the inner cylinder 82 from the bottom of the inner cylinder 82, and then enters the low-pressure chamber 14 through the top through hole 823 of the inner cylinder 82. The filter screen 84 filters impurities in the liquid refrigerant, and the bottom of the outer cylinder 83 is provided with an oil return hole 814 to facilitate the return of lubricating oil from the oil return hole 814 to the low-pressure chamber 14. The top of the inner cylinder 82 is also provided with a balance hole 821 to balance the gas pressure difference. The gas-liquid separator 80 includes a support member 834 connecting the outer cylinder 83 and the outer shell 50. The support member 834 stabilizes the installation of the gas-liquid separator 80.

[0145] The gas-liquid separator 80, which uses an inner and outer sleeve configuration, has improved gas-liquid separation capability compared to the U-shaped tube separator 81 due to the cyclone shroud. Furthermore, the inner and outer sleeve configuration allows for more uniform gaseous refrigerant distribution, reducing noise within the gas-liquid separator 80.

[0146] like Figure 30 The image shows another embodiment of the gas-liquid separator 80 of this application.

[0147] The gas-liquid separator 80 includes an inlet pipe 861, a top plate 87, a separation cover 88, a separation pipe 89, and an outlet pipe 862. The inlet pipe 861 is connected to the refrigerant inlet 18, the separation cover 88 is connected to the top of the separation pipe 89, and the outlet pipe 862 communicates with the low-pressure chamber 14. Both the inlet pipe 861 and the outlet pipe 862 are fixed to the top plate 87. The separation pipe 89 includes a first separation pipe 891 and a second separation pipe 893, which are arranged side-by-side along the radial direction of the separation pipe 89. The first separation pipe 891 and the second separation pipe 893 can be separate components assembled and fixed, or they can be a single integrated structure. The first separation pipe 891 includes a first cavity 892, and the second separation pipe 893 has a second cavity 894. The first cavity 892 and the second cavity 894 are connected at the bottom. The refrigerant entering from the refrigerant inlet 18 first passes through the separation shroud 88 for swirl separation. The liquid refrigerant falls to the bottom of the separation chamber 12, while the gaseous refrigerant enters from the top opening 895 of the first separation tube 891 into the first cavity 892 of the first separation tube 891, then enters from the bottom of the first cavity 892 into the second cavity 894 of the second separation tube 893, and then enters the low-pressure chamber 14 through the top of the second separation tube 893.

[0148] The gas-liquid separator 80 comprises a filter screen 84 connected to the bottom of the separation tube 89, and the bottom of the separation tube 89 is provided with an oil return hole 814. The filter screen 84 filters impurities in the liquid refrigerant, and facilitates the return of lubricating oil from the oil return hole 814 to the low-pressure chamber 14. The top of the inner cylinder body 82 is also provided with a balance hole 896 to balance the gas pressure difference. Due to the parallel arrangement of the separation tubes 89, the distance between them is shortened, thereby reducing the noise in the gas-liquid separator 80.

[0149] A control method of a thermal management system 90, comprising:

[0150] Providing a refrigerant compression pump 10, a condenser 92, a throttling device 93, an evaporator 91 and a controller 30; the refrigerant compression pump 10 comprises a compression component 70 and an electric heater 20;

[0151] The controller 30 controls the thermal management system 90 to operate in a heating mode, the refrigerant compression pump 10 compresses the refrigerant, and the refrigerant flows from the refrigerant compression pump 10 to the condenser 92, the throttling device 93, the evaporator 91 in turn, and then returns to the refrigerant compression pump 10;

[0152] The refrigerant returned to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again.

[0153] In the control method of the thermal management system 90 of the present application, the refrigerant returned to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again. When the thermal management system 90 works in a low-temperature state, the electric heater 20 can directly heat the refrigerant, thereby quickly heating the indoor.

[0154] The refrigerant returned to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again, comprising:

[0155] The refrigerant returned to the refrigerant compression pump 10 is separated into gaseous refrigerant and liquid refrigerant, the gaseous refrigerant is heated by the electric heater 20 and then enters the low-pressure chamber 14 and the compression chamber 15, and is compressed again by the compression chamber 15.

[0156] In the control method of the thermal management system 90 of the present application, the refrigerant returned to the refrigerant compression pump 10 is heated by the electric heater 20 after being separated, thereby improving the safety of the electric heater 20 facing the liquid refrigerant.

[0157] Another embodiment of the thermal management system 90 is described as follows.

[0158] The heat management system 90 comprises a refrigerant compression pump 10, an evaporator 91, a condenser 92 and a throttling device 93, the outlet of the refrigerant compression pump 10 is communicated with the inlet of the condenser 92, the outlet of the condenser 92 is communicated with the inlet of the throttling device 93, the outlet of the throttling device 93 is communicated with the inlet of the evaporator 91, and the outlet of the evaporator 91 is communicated with the inlet of the refrigerant compression pump 10.

[0159] The refrigerant compression pump 10 comprises a heating cavity 11, a low-pressure cavity 14, a compression cavity 15 and a high-pressure cavity 16, the low-pressure cavity 14 is communicated with the compression cavity 15, and the compression cavity 15 and the high-pressure cavity 16 are communicated; the refrigerant compression pump 10 comprises a motor 60, a compression component 70 and an electric heater 20, the motor 60 is connected with the compression component 70, the motor 60 is located in the low-pressure cavity 14, the compression component 70 is located in the compression cavity 15, and the electric heater 20 is located in the heating cavity 11.

[0160] The refrigerant compression pump 10 comprises a controller 30, the refrigerant compression pump 10 has an electrical cavity 17, the controller 30 is located in the electrical cavity 17, the controller 30 is electrically connected with the motor 60, and the controller 30 is electrically connected with the electric heater 20; the heating cavity 11 and the low-pressure cavity 14 are located on the same side of the electrical cavity 17.

[0161] The refrigerant compression pump 10 of the heat management system 90 comprises the motor 60, the compression component 70 and the electric heater 20, the electric heater 20 is at least partially located in the heating cavity 11, the heating cavity 11 and the low-pressure cavity 14 are located on the same side of the electrical cavity 17, and the electric heater and the refrigerant compression pump 10 can share a wire harness connected to an external device, so that the cost is reduced.

[0162] The heat management system 90 comprises a double-channel heat exchanger 94, the double-channel heat exchanger 94 comprises a first channel 941 and a second channel 942, the outlet of the condenser 92 is communicated with the inlet of the first channel 941, the outlet of the first channel 941 is communicated with the inlet of the throttling device 93; the outlet of the evaporator 91 is communicated with the inlet of the second channel 942, and the outlet of the second channel 942 is communicated with the inlet of the refrigerant compression pump 10.

[0163] The throttling device 93 comprises a first electronic expansion valve 931 and a second electronic expansion valve 932, the second electronic expansion valve 932 is arranged in parallel with the first electronic expansion valve 931, the first electronic expansion valve 931 is connected between the outlet of the condenser 92 and the inlet of the evaporator 91, and the second electronic expansion valve 932 is connected between the outlet of the condenser 92 and the inlet of the refrigerant compression pump 10.

[0164] The application provides a control method of a heat management system 90, which comprises the following steps:

[0165] The controller 30 controls the thermal management system 90 to operate in the heating mode, the refrigerant compression pump 10 compresses the refrigerant, and the refrigerant flows from the refrigerant compression pump 10 to the condenser 92, the throttling device 93, the evaporator 91 in sequence, and then returns to the refrigerant compression pump 10.

[0166] The refrigerant returning to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again.

[0167] In the control method of the thermal management system 90, the refrigerant returning to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again, and the electric heater and the motor 60 of the refrigerant compression pump 10 can share the wiring harness connected to the external device, thereby reducing the cost.

[0168] The refrigerant returning to the refrigerant compression pump 10 is heated by the electric heater 20 in the refrigerant compression pump 10 and then compressed again, comprising:

[0169] The refrigerant returning to the refrigerant compression pump 10 is separated into gaseous refrigerant and liquid refrigerant, the gaseous refrigerant is heated by the electric heater 20 and then enters the low-pressure cavity 14 and the compression cavity 15, and is compressed again by the compression cavity 15.

[0170] In the control method of the thermal management system 90, the refrigerant returning to the refrigerant compression pump 10 is heated by the electric heater 20 after being separated, thereby improving the safety of the electric heater 20 facing the liquid refrigerant.

[0171] Another embodiment of the thermal management system 90 is described as follows.

[0172] A thermal management system 90, comprising a refrigerant compression pump 10, an evaporator 91, a condenser 92, and a throttling device 93, the outlet of the refrigerant compression pump 10 is communicated with the inlet of the condenser 92, the outlet of the condenser 92 is communicated with the inlet of the throttling device 93, the outlet of the throttling device 93 is communicated with the inlet of the evaporator 91, and the outlet of the evaporator 91 is communicated with the inlet of the refrigerant compression pump 10.

[0173] The refrigerant compression pump 10 comprises a shell 50, a motor 60, a compression component 70, a sensor 40, and a signal plug-in end 56, the motor 60 and the compression component 70 are connected, and the signal plug-in end 56 is connected with the shell 50.

[0174] The refrigerant compression pump 10 has a low-pressure cavity 14 and a high-pressure cavity 16 located in the shell 50, the motor 60 is at least partially located in the low-pressure cavity 14, and the sensor 40 is at least partially located in at least one of the low-pressure cavity 14 and the high-pressure cavity 16; the sensor 40 is electrically connected with the signal plug-in end 56.

[0175] The refrigerant compressor 10 of the thermal management system 90 of the present application comprises a motor 60, a compression component 70 and a sensor 40, the sensor 40 is at least partially located in the low-pressure cavity 14 or the high-pressure cavity 16, the sensor 40 is arranged inside the refrigerant compressor 10 and shares the signal plug-in end 56 with the refrigerant compressor 10, thereby saving the wiring harness cost of the sensor 40.

[0176] The present application provides a control method of a thermal management system 90, comprising:

[0177] The refrigerant compressor 10, the condenser 92, the throttling device 93, the evaporator 91 and the controller 30 are provided; the refrigerant compressor 10 comprises a compression component 70 and a sensor 40;

[0178] The controller 30 controls the thermal management system 90 to operate in the heating mode, the refrigerant compressor 10 compresses the refrigerant, and the refrigerant flows from the refrigerant compressor 10 to the condenser 92, the throttling device 93 and the evaporator 91 in turn, and then returns to the refrigerant compressor 10;

[0179] The sensor 40 detects at least one of the temperature and the pressure of the refrigerant in the refrigerant compressor 10 and feeds back the information to the controller 30.

[0180] In the control method of the thermal management system 90 of the present application, the sensor 40 is at least partially located in the low-pressure cavity 14 or the high-pressure cavity 16, the sensor 40 is arranged inside the refrigerant compressor 10 and shares the signal plug-in end 56 with the refrigerant compressor 10, thereby saving the wiring harness cost of the sensor 40.

[0181] The sensor 40 detects at least one of the temperature and the pressure of the refrigerant in the refrigerant compressor 10 and feeds back the information to the controller 30, comprising:

[0182] The sensor 40 detects the temperature and the pressure information of the refrigerant in the low-pressure cavity 14 and feeds back the information to the controller 30, and the sensor 40 detects the temperature and the pressure information of the refrigerant in the high-pressure cavity 16 and feeds back the information to the controller 30. Through the monitoring of the temperature and the pressure of the refrigerant in the low-pressure cavity 14 and the high-pressure cavity 16, the sensor 40 can more accurately detect the temperature and pressure difference of the thermal management system, thereby simplifying the control of the thermal management system.

[0183] Another embodiment of the thermal management system 90 is introduced as follows.

[0184] A thermal management system 90 comprises a refrigerant compressor 10, an evaporator 91, a condenser 92 and a throttling device 93, the outlet of the refrigerant compressor 10 is communicated with the inlet of the condenser 92, the outlet of the condenser 92 is communicated with the inlet of the throttling device 93, the outlet of the throttling device 93 is communicated with the inlet of the evaporator 91, and the outlet of the evaporator 91 is communicated with the inlet of the refrigerant compressor 10;

[0185] The refrigerant compressor 10 comprises:

[0186] a housing 50, the housing 50 having a refrigerant inlet 18 and a refrigerant outlet 19, the refrigerant compressor 10 having a separation chamber 12, a low-pressure chamber 14 and a high-pressure chamber 16, the separation chamber 12, the low-pressure chamber 14 and the high-pressure chamber 16 being located inside the housing 50, the high-pressure chamber 16 being in communication with the refrigerant outlet 19;

[0187] a motor 60, the motor 60 being located in the low-pressure chamber 14, the low-pressure chamber 14 being in communication with the separation chamber 12;

[0188] a compression component 70, the motor 60 being connected with the compression component 70, the motor 60 being capable of driving the compression component 70 to operate, the refrigerant compressor 10 having a compression chamber 15, the compression component 70 at least partially forming a chamber wall of the compression chamber 15, the compression chamber 15 being capable of being in communication with the high-pressure chamber 16; and

[0189] a gas-liquid separator 80, the gas-liquid separator 80 being at least partially located in the separation chamber 12, the separation chamber 12 being in communication with the refrigerant inlet 18.

[0190] The refrigerant compressor 10 of the thermal management system 90 of the present application comprises the motor 60, the compression component 70 and the gas-liquid separator 80, through the gas-liquid separator 80 arranged in the refrigerant compressor 10, the refrigerant compressor 10 and the gas-liquid separator 80 can share the housing 50, thereby saving cost and reducing the risk of refrigerant leakage.

[0191] A control method of a thermal management system 90, the thermal management system 90 comprising a refrigerant compressor 10, a condenser 92, a throttling device 93 and an evaporator 91; the refrigerant compressor 10 comprising a compression component 70 and a gas-liquid separator 80, the control method of the thermal management system 90 comprising:

[0192] the thermal management system 90 operating in a heating mode, the refrigerant compressor 10 compressing refrigerant, the refrigerant flowing from the refrigerant compressor 10 to the condenser 92, the throttling device 93 and the evaporator 91 in sequence, and then returning to the refrigerant compressor 10;

[0193] the refrigerant returning to the refrigerant compressor 10 being separated by the gas-liquid separator 80 into gaseous refrigerant and liquid refrigerant, the gaseous refrigerant being compressed again by the compression component, thereby forming a circulation loop.

[0194] In the control method of the thermal management system 90 of the present application, the refrigerant returning to the refrigerant compressor 10 is separated by the gas-liquid separator 80 into gaseous refrigerant and liquid refrigerant, the refrigerant compressor 10 and the gas-liquid separator 80 can share the housing 50, thereby saving cost and reducing the risk of refrigerant leakage.

[0195] The refrigerant returning to the refrigerant compressor 10 is separated by the gas-liquid separator 80 into gaseous refrigerant and liquid refrigerant, the gaseous refrigerant being compressed again by the compression component, thereby forming a circulation loop, comprising:

[0196] The gaseous refrigerant is heated by the electric heater 20, enters the low-pressure chamber 14 and the compression chamber 15, and is compressed again in the compression chamber 15.

[0197] In the control method of the thermal management system 90, the refrigerant returned to the refrigerant compression pump 10 is heated by the electric heater 20 after being separated into gas and liquid, which improves the safety of the electric heater 20 facing the liquid refrigerant.

[0198] The above examples are only used to illustrate the present application and not to limit the technical solutions described in the present application. The understanding of the specification should be based on the skilled person in the art, for example, the directional description of "front", "back", "left", "right", "up", "down" and the like is only used to describe the relationship between objects, and is not materially limited. "Multiple" means at least two or more.

[0199] Although the present application has been described in detail with reference to the above examples, it should be understood by those skilled in the art that the skilled person in the art can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A refrigerant compression pump, characterized in that, The refrigerant compression pump includes: The housing (50) and the refrigerant compressor pump have a heating chamber (11), a low-pressure chamber (14), a compression chamber (15) and a high-pressure chamber (16), which are located inside the housing (50); An electric motor (60) is located in a low-pressure chamber (14), and the electric motor (60) includes a stator (61) and a rotor (64); A compression component (70) is provided, wherein the rotor (64) is connected to the compression component (70), and the motor (60) can drive the compression component (70) to operate. The compression component (70) at least partially forms the cavity wall of the compression chamber (15), and the compression chamber (15) can communicate with the high pressure chamber (16). A controller (30), the refrigerant compressor pump having an electrical cavity (17), the controller (30) being located in the electrical cavity (17), the controller (30) being electrically connected to the stator (61); and An electric heater (20) is located at least partially in a heating chamber (11), the heating chamber (11) and the low-pressure chamber (14) are located on the same side of an electrical chamber (17), and a controller (30) is electrically connected to the electric heater (20).

2. The refrigerant compression pump as described in claim 1, characterized in that, The electric heater (20) includes a heating tube (21) and a connecting foot (23). The heating tube (21) includes a tube body (211), a heating wire (212), and an insulator (213). The insulator (213) is spaced between the heating wire (212) and the tube body (211). The heating wire (212) is physically and electrically connected to the connecting foot (23). The controller (30) includes a circuit board (31) and a control chip (32) connected to the surface of the circuit board (31). The connecting pin (23) is in contact with and electrically connected to the circuit board (31).

3. The refrigerant compression pump as described in claim 1, characterized in that, The electric heater (20) includes a heating film (24), a carrier (25), and a connecting pin (23). The heating film (24) is attached to the carrier (25) and is electrically connected to the connecting pin (23). The controller (30) includes a circuit board (31) and a chip connected to the surface of the circuit board (31). The connecting pin (23) is physically and electrically connected to the circuit board (31).

4. The refrigerant compression pump as described in claim 1, characterized in that, The electric heater (20) includes a heating tube (21), fins (26) and a connecting foot (23). The heating tube (21) passes through the fins (26). One end of the connecting foot (23) is connected to the heating tube (21), and the other end of the connecting foot (23) is connected to the controller (30).

5. The refrigerant compression pump according to any one of claims 1 to 4, characterized in that, The refrigerant compressor pump includes a power connector (55) and a signal connector (56). The power connector (55) is electrically connected to the circuit board (31), and the signal connector (56) is electrically connected to the circuit board (31). The motor (60) includes a stator (61), a rotor (64) and a shaft (65). One end of the shaft (65) is connected to the rotor (64), and the other end of the shaft (65) is connected to the compression component (70). The stator (61) includes a stator core (62) and enameled wire (63). The enameled wire (63) is electrically connected to the circuit board (31) through an adapter. The rotor (64) is fixedly connected to the shaft (65). The compression component (70) includes a moving scroll (71) and a stationary scroll (72). The compression chamber (15) is at least partially located between the moving scroll (71) and the stationary scroll (72). The moving scroll (71) includes a moving disc body (711) and moving scroll teeth (712). The stationary scroll (72) includes a stationary disc body (721) and stationary scroll teeth (722). The moving scroll teeth (712) and stationary scroll teeth (722) mesh with each other. The moving scroll (71) is connected to a rotating shaft (65). The stationary disc body (721) has an exhaust port (723). The refrigerant compression pump includes an exhaust valve plate (74), which cooperates with the exhaust port (723).

6. A thermal management system, characterized in that, The thermal management system includes a refrigerant compressor pump (10), an evaporator (91), a condenser (92), and a throttling device (93). The outlet of the refrigerant compressor pump (10) is connected to the inlet of the condenser (92), the outlet of the condenser (92) is connected to the inlet of the throttling device (93), the outlet of the throttling device (93) is connected to the inlet of the evaporator (91), and the outlet of the evaporator (91) is connected to the inlet of the refrigerant compressor pump (10). The refrigerant compressor pump (10) has a heating chamber (11), a low-pressure chamber (14), a compression chamber (15), and a high-pressure chamber (16). The low-pressure chamber (14) is connected to the compression chamber (15), and the compression chamber (15) and the high-pressure chamber (16) are connected. The refrigerant compressor pump (10) includes a motor (60), a compression component (70), and an electric heater (20). The motor (60) is connected to the compression component (70). The motor (60) is located in the low-pressure chamber (14), and the electric heater (20) is located in the heating chamber (11). The refrigerant compression pump (10) includes a controller (30), the refrigerant compression pump (10) has an electrical cavity (17), the controller (30) is located in the electrical cavity (17), the controller (30) is electrically connected to the motor (60), and the controller (30) is electrically connected to the electric heater (20); the motor (60) includes a stator (61) and a rotor (64), the rotor (64) is connected to the compression component (70), and the controller (30) is electrically connected to the stator (61).

7. The thermal management system as described in claim 6, characterized in that, The thermal management system includes a dual-channel heat exchanger (94), which includes a first channel (941) and a second channel (942). The outlet of the condenser (92) is connected to the inlet of the first channel (941), and the outlet of the first channel (941) is connected to the inlet of the throttling device (93). The outlet of the evaporator (91) is connected to the inlet of the second channel (942), and the outlet of the second channel (942) is connected to the inlet of the refrigerant compressor pump (10).

8. The thermal management system as described in claim 6, characterized in that, The throttling device (93) includes a first electronic expansion valve (931) and a second electronic expansion valve (932). The second electronic expansion valve (932) is connected in parallel with the first electronic expansion valve (931). The first electronic expansion valve (931) is connected between the outlet of the condenser (92) and the inlet of the evaporator (91). The second electronic expansion valve (932) is connected between the outlet of the condenser (92) and the inlet of the refrigerant compressor pump (10).

9. A control method for a thermal management system as described in any one of claims 6 to 8, characterized in that, include: The controller (30) controls the thermal management system to operate in heating mode. The refrigerant compressor pump (10) compresses the refrigerant. The refrigerant flows from the refrigerant compressor pump (10) through the condenser (92), the throttling device (93), and the evaporator (91) in sequence, and then returns to the refrigerant compressor pump (10). The refrigerant returning to the refrigerant compressor pump (10) is heated by the electric heater (20) inside the refrigerant compressor pump (10) and then compressed again.

10. The control method as described in claim 9, characterized in that, The refrigerant returned to the refrigerant compressor pump (10) is heated by the electric heater (20) inside the refrigerant compressor pump (10) and then compressed again, including: The refrigerant returned to the refrigerant compressor pump (10) is separated into gaseous refrigerant and liquid refrigerant. The gaseous refrigerant is heated by the electric heater (20) and then enters the low-pressure chamber (14) and the compression chamber (15), and is compressed again in the compression chamber (15).

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