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 shell, a motor, a signal plug-in end and a sensor. The shell has a refrigerant inlet and a refrigerant outlet, and the refrigerant compressor has a low-pressure cavity, a compression cavity and a high-pressure cavity, which are located inside the shell, and the high-pressure cavity is in communication with the refrigerant outlet. The motor is located in the low-pressure cavity, and the low-pressure cavity is in communication with the refrigerant inlet; a compression component, the motor is connected with the compression component, the motor can drive the compression component to operate, the compression component at least partially forms the cavity wall of the compression cavity, and the compression cavity and the high-pressure cavity can be in communication. The signal plug-in end is connected with the shell, and the signal plug-in end is used for external communication connection; the sensor is at least partially located in the low-pressure cavity or the high-pressure cavity, and the sensor is electrically connected with the signal plug-in end. The sensor is arranged inside the refrigerant compressor, and shares the signal plug-in end with the refrigerant compressor, so that the wire harness cost of the sensor is saved.

Description

Refrigerant compressor pump, thermal management system and its control method Technical Field

[0001] This application relates to the field of thermal management technology, and in particular to the integrated structure of compressors and sensors. Background Technology

[0002] The thermal management system includes a compressor, condenser, throttling device, evaporator, sensors, and connecting pipes. Sensors are usually installed in the connecting pipes to measure the temperature and pressure of the refrigerant in the pipes.

[0003] The compressor and sensors each require separate wiring harnesses to connect to the control unit, resulting in a large number of wiring harnesses and higher costs. Summary of the Invention

[0004] In a first aspect, this application provides a refrigerant compression pump, which includes:

[0005] The housing has a refrigerant inlet and a refrigerant outlet, and the refrigerant compressor pump has a low-pressure chamber, a compression chamber and a high-pressure chamber, the low-pressure chamber, the compression chamber and the high-pressure chamber are located inside the housing, and the high-pressure chamber is connected to the refrigerant outlet;

[0006] An electric motor is located in a low-pressure chamber, which is connected to a refrigerant inlet.

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

[0008] A signal connector, which connects to the housing and is used for external communication; and

[0009] A sensor, at least partially located in a low-pressure chamber or a high-pressure chamber, is electrically connected to a signal connector.

[0010] The refrigerant compressor pump of this application includes a motor, a compression component and a sensor. The sensor is at least partially located in the low-pressure chamber or the high-pressure chamber. The sensor is placed inside the refrigerant compressor pump and shares a signal connector with the refrigerant compressor pump, thereby saving the cost of the sensor wiring harness.

[0011] Secondly, this application provides a thermal management system, which includes a refrigerant compressor pump, an evaporator, a condenser, and a throttling device. The outlet of the refrigerant compressor pump is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the throttling device, the outlet of the throttling device is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the inlet of the refrigerant compressor pump.

[0012] The refrigerant compression pump includes a housing, a motor, a compression component, a sensor, and a signal connector. The motor and the compression component are connected, and the signal connector is connected to the housing.

[0013] The refrigerant compressor pump has a low-pressure chamber and a high-pressure chamber located within a housing. The motor is at least partially located in the low-pressure chamber, and the sensor is at least partially located in at least one of the low-pressure chamber and the high-pressure chamber. The sensor is electrically connected to a signal connector.

[0014] The refrigerant compressor pump of the thermal management system of this application includes a motor, a compression component and a sensor. The sensor is located at least partially in the low-pressure chamber or the high-pressure chamber. The sensor is placed inside the refrigerant compressor pump and shares a signal connector with the refrigerant compressor pump, thereby saving the cost of the sensor wiring harness.

[0015] Thirdly, this application provides a control method for a thermal management system, including:

[0016] We provide refrigerant compressor pumps, condensers, throttling devices, evaporators, and controllers; the refrigerant compressor pump includes compression components and sensors.

[0017] The controller controls the thermal management system to operate in heating mode. The refrigerant compressor pump compresses the refrigerant, and the refrigerant flows from the refrigerant compressor pump through the condenser, the throttling device, and the evaporator in sequence, and then returns to the refrigerant compressor pump.

[0018] The sensor detects at least one of the refrigerant temperature and pressure inside the refrigerant compressor pump and feeds it back to the controller.

[0019] In the control method of the thermal management system of this application, the sensor is at least partially located in the low-pressure chamber or the high-pressure chamber. The sensor is set inside the refrigerant compressor pump and shares a signal connector with the refrigerant compressor pump, thereby saving the cost of the sensor wiring harness. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the refrigerant compression pump of this application;

[0021] Figure 2 is a schematic diagram of the thermal management system of this application;

[0022] Figure 3 is a schematic diagram of another embodiment of the refrigerant compression pump of this application;

[0023] Figure 4 is a schematic diagram of another embodiment of the refrigerant compression pump of this application;

[0024] Figure 5 is a schematic diagram of another embodiment of the refrigerant compression pump of this application;

[0025] Figure 6 is a schematic diagram of another embodiment of the refrigerant compression pump of this application;

[0026] Figure 7 is a schematic diagram of another embodiment of the thermal management system of this application;

[0027] Figure 8 is a schematic diagram of another embodiment of the thermal management system of this application;

[0028] Figure 9 is a schematic diagram of another embodiment of the thermal management system of this application;

[0029] Figure 10 is a schematic diagram of another embodiment of the thermal management system of this application;

[0030] Figure 11 is a schematic diagram of another embodiment of the thermal management system of this application;

[0031] Figure 12 is a schematic diagram of another embodiment of the thermal management system of this application;

[0032] Figure 13 is a perspective view of another embodiment of the heater of this application;

[0033] Figure 14 is a cross-sectional schematic diagram of another embodiment of the heater of this application;

[0034] Figure 15 is a perspective view of yet another embodiment of the heater of this application;

[0035] Figure 16 is an exploded view of yet another embodiment of the heater of this application;

[0036] Figure 17 is a perspective view of another embodiment of the heater of this application;

[0037] Figure 18 is an exploded view of another embodiment of the heater of this application;

[0038] Figure 19 is a perspective view of another embodiment of the heater of this application;

[0039] Figure 20 is a three-dimensional schematic diagram of the fins of this application;

[0040] Figure 21 is a three-dimensional cross-sectional view of the sensor of this application;

[0041] Figure 22 is a cross-sectional view of the sensor of this application mounted on the circuit board;

[0042] Figure 23 is a perspective cross-sectional view of another embodiment of the sensor of this application;

[0043] Figure 24 is a cross-sectional schematic diagram of another embodiment of the sensor of this application;

[0044] Figure 25 is a three-dimensional schematic diagram of the refrigerant heating pump of this application;

[0045] Figure 26 is a cross-sectional schematic diagram of the refrigerant heating pump of this application;

[0046] Figure 27 is a cross-sectional schematic diagram of the refrigerant heating pump of this application, with the bold lines indicating different pressure chambers;

[0047] Figure 28 is an exploded view of another embodiment of the gas-liquid separator of this application;

[0048] Figure 29 is a perspective cross-sectional view of another embodiment of the gas-liquid separator of this application;

[0049] Figure 30 is a schematic view of another embodiment of the gas-liquid separator of this application.

[0050] In the diagram: refrigerant compressor pump 10, heating chamber 11, separation chamber 12, heating and separation chamber 13, low-pressure chamber 14, compression chamber 15, high-pressure chamber 16, electrical chamber 17, refrigerant inlet 18, refrigerant outlet 19;

[0051] Electric heater 20, heating tube 21, tube body 211, heating wire 212, insulator 213, adapter pin 22, connecting foot 23, heating film 24, carrier 25, fin 26, separator 27, microchannel 28, turbulence element 29;

[0052] Controller 30, circuit board 31, control chip 32;

[0053] Sensor 40, housing 41, sensing element 42, connecting terminal 43, first end 431, second end 432, detection channel 44, circuit board 45, temperature sensing element 46, pressure sensing element 47, first sensor 48, second sensor 49;

[0054] Outer shell 50, first shell 51, first cavity 511, second shell 52, second cavity 521, third shell 53, third half shell 531, partition plate 54, power connector 55, signal connector 56;

[0055] Motor 60, stator 61, stator core 62, enameled wire 63, rotor 64, shaft 65;

[0056] Compression component 70, moving scroll 71, moving scroll body 711, moving scroll tooth 712, back pressure communication hole 713, stationary scroll 72, stationary scroll body 721, stationary scroll tooth 722, exhaust hole 723, exhaust valve plate 74, back pressure chamber 75.

[0057] Bearing housing 761, main bearing 762, auxiliary bearing 763, eccentric sleeve 764, oil separator structure 765, oil return structure 766, rolling bearing 768, bearing groove 769;

[0058] Gas-liquid separator 80, U-shaped tube 81, first vertical tube 811, first horizontal tube 812, second vertical tube 813, oil return hole 814, inner cylinder 82, balance hole 821, outer cylinder 83, top opening 831, support member 834, filter screen 84, vortex separator 85, inlet pipe 861, outlet pipe 862, top plate 87, separation cover 88, separation tube 89, first separation tube 891, first cavity 892, second separation tube 893, second cavity 894;

[0059] Thermal management system 90, evaporator 91, condenser 92, throttling device 93, first electronic expansion valve 931, second electronic expansion valve 932, dual-channel heat exchanger 94, first channel 941, second channel 942, four-way reversing valve 951, first indoor heat exchanger 952, second indoor heat exchanger 953, intermediate heat exchanger 955, battery cooler 956, battery heat exchanger 957, motor heat exchanger 958, water pump 959, liquid-cooled heat exchanger 961, outdoor heat exchanger 962, low-temperature water tank 963, water tank 964. Detailed Implementation

[0060] As shown in Figure 1, this application provides a refrigerant compression pump 10, which includes a housing 50, a motor 60, a compression component 70, and an electric heater 20.

[0061] The refrigerant compression pump 10 has a heating chamber 11, a low-pressure chamber 14, a compression chamber 15 and a high-pressure chamber 16. The heating chamber 11, the low-pressure chamber 14, the compression chamber 15 and the high-pressure chamber 16 are located inside the housing 50. The heating chamber 11 is connected to the low-pressure chamber 14, 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.

[0062] In this application, "connected" and "capable of being connected" mean direct connection or connection controlled by switching devices such as valves. That is, in this application, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through other objects C or space D.

[0063] For example, the heating chamber 11 is connected to the low-pressure chamber 14, either directly or controllably via a valve or other switching device. The low-pressure chamber 14 is connected to the compression chamber 15, either directly or controllably via a valve or other switching device. The compression chamber 15 and the high-pressure chamber 16 are connected, meaning they are controllably connected via a valve or other switching device.

[0064] The motor 60 is located in the low-pressure chamber 14, and the electric heater 20 is located in the heating chamber 11. The housing 50 has a refrigerant inlet 18 and a refrigerant outlet 19. The high-pressure chamber 16 is connected to the refrigerant outlet 19, and the heating chamber 11 is connected to the refrigerant inlet 18. The heating chamber 11, the low-pressure chamber 14, the compression chamber 15, and the high-pressure chamber 16 are located inside the housing 50, and the compression component 70 at least partially forms the cavity wall of the compression chamber 15.

[0065] As shown in Figures 1 and 2, during low temperatures in winter, the condenser 92 of the thermal management system 90 needs to heat the indoor space, while the evaporator 91 needs to absorb heat from the outside. However, due to the low outdoor temperature, it is difficult for the thermal management system 90 to absorb heat from the outside.

[0066] The related technical design does not use a heat pump in low winter temperatures. Instead, it uses a fan-heated PTC electric heater or a water-cooled PTC electric heater to heat the room. Such a high-voltage electric heater requires a separate high-voltage wiring harness, and the compressor also requires a high-voltage wiring harness. This results in two sets of high-voltage wiring harnesses, which leads to high costs.

[0067] Disadvantages of high-voltage air-side heaters: (a) Individual high-voltage electric heaters are expensive; (b) The compressor and electric heater require two sets of high-voltage wiring harnesses, which are expensive; (c) The air-side heater is located in the passenger cabin, which introduces safety hazards due to high voltage in the passenger cabin; (d) The air-side electric heater is prone to producing odors, which reduces passenger comfort.

[0068] Disadvantages of high-voltage water-side heaters: (a) The cost of a separate high-voltage electric heater is relatively high; (b) The compressor and the electric heater require two sets of high-voltage wiring harnesses, which are costly.

[0069] There are also related technical designs that use a compressor operating in an inefficient mode for heating. The disadvantages are: (a) the large mass and heat capacity of the motor result in a slow temperature rise; (b) the large size of the motor causes significant heat leakage to the environment, resulting in energy waste; (c) the compressor and electric heater require two sets of high-voltage wiring harnesses, which are costly; (d) the power of the low-voltage air-side heater is limited by the excessive current, resulting in insufficient power. In case of (a), when the motor temperature has not risen sufficiently, it can only serve as a partial supplement. Passengers can feel the warm air, but the temperature is still insufficient to provide adequate comfort; (e) the air-side electric heater is prone to producing odors, reducing passenger comfort; (f) the deliberate inefficient operation of the motor increases the complexity of the software control.

[0070] In the thermal management system 90 of this application, the refrigerant enters the heating chamber 11 from the refrigerant inlet 18 of the refrigerant compressor pump. After being heated by the electric heater 20, the refrigerant enters the low-pressure chamber 14 and then the compression chamber 15. The motor 60 drives the compression component 70 to compress the low-temperature, low-pressure refrigerant entering the compression chamber 15 from the low-pressure chamber 14, forming a high-temperature, 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, 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 back into the thermal management system 90 through the refrigerant outlet 19 of the refrigerant compressor pump 10.

[0071] The refrigerant compressor pump 10 has a refrigerant inlet 18 and a refrigerant outlet 19. The refrigerant inlet 18 is connected to the heating chamber 11, and the refrigerant outlet 19 is connected to the high-pressure chamber 16. When the refrigerant compressor pump 10 is working, the low-temperature, low-pressure refrigerant enters the low-pressure chamber 14 through the refrigerant inlet 18, flows through the motor 60 to dissipate heat from the motor 60, and then enters the compression chamber 15. The motor 60 drives the compression component 70 to move and compress the refrigerant in the compression chamber 15, turning it into a high-temperature, high-pressure refrigerant. Under certain conditions, it enters the high-pressure chamber 16 and is then transported to the heat pipe through the refrigerant outlet 19. reason System 90.

[0072] 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 and is located in the low-pressure chamber 14. The compression component 70 forms a 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 installing the electric heater 20 inside the refrigerant compression pump 10, this application can improve the heating speed of the thermal management system 90 by heating the refrigerant even at very low temperatures when the refrigerant compression pump 10 is operating in the heating mode in the thermal management system 90.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] Figure 3 shows another embodiment of the refrigerant compression pump 10 of this application.

[0079] The refrigerant compression pump 10 includes a gas-liquid separator 80, a motor 60 connected to a compression component 70, the motor 60 located in the low-pressure chamber 14, the compression component 70 at least partially forming the wall of the compression chamber 15, and the gas-liquid separator 80 located in the separation chamber 12. The separation chamber 12 is connected to the refrigerant inlet 18, the low-pressure chamber 14, and the compression chamber 15. The compression chamber 15 is connected to the high-pressure chamber 16, and the high-pressure chamber 16 is connected to the refrigerant outlet 19.

[0080] By directly installing a gas-liquid separator 80 inside the refrigerant compressor pump 10, the gas-liquid separator 80 and the refrigerant compressor pump 10 can share the outer shell 50, thereby saving the outer cylinder 83 structure of the gas-liquid separator 80 in the thermal management system 90, and also saving the connecting pipeline between the gas-liquid separator 80 and the refrigerant compressor pump 10 in the thermal management system 90, reducing manufacturing costs and reducing the risk of refrigerant leakage caused by multiple pipeline connection points.

[0081] Figure 4 shows another embodiment of the refrigerant compression pump 10 of this application.

[0082] The refrigerant compressor pump 10 has a heating chamber 11 and a separation chamber 12. The heating chamber 11 is connected to the refrigerant inlet 18 of the refrigerant compressor pump 10, and the outlet of the heating chamber 11 is connected to the separation chamber 12. The outlet of the separation chamber 12 is connected to the low-pressure chamber 14, the low-pressure chamber 14 is connected to the compression chamber 15, the compression chamber 15 is connected to the high-pressure chamber 16, and the high-pressure chamber 16 is connected to the refrigerant outlet 19. The separation chamber 12 is located between the heating chamber 11 and the low-pressure chamber 14, and can perform both gas-liquid separation and storage of liquid refrigerant.

[0083] The separation chamber 12 is located between the heating chamber 11 and the low-pressure chamber 14. By setting up the separation chamber 12 and the heating chamber 11, and installing a gas-liquid separator 80 in the separation chamber 12 and an electric heater 20 in the heating chamber 11, the refrigerant entering the compressor can be heated by the electric heater 20 first, and then separated into gaseous and liquid refrigerant by the gas-liquid separator 80. This increases the proportion of liquid refrigerant converted into gaseous refrigerant, thereby reducing the refrigerant charge and saving costs.

[0084] The refrigerant compression pump 10 includes a housing 50, with a heating chamber 11, a low-pressure chamber 14, a compression chamber 15, and a high-pressure chamber 16 located inside the housing 50. The refrigerant compression pump 10 also includes a partition plate 54 located between the heating chamber 11 and the separation chamber 12. The partition plate 54 reduces the uneven separation and heating caused by the mixing of refrigerant in the heating chamber 11 and the separation chamber 12, resulting in more uniform separation and heating.

[0085] Figure 5 shows another embodiment of the refrigerant compression pump 10 of this application.

[0086] The refrigerant compressor pump 10 has a heating chamber 11 and a separation chamber 12. The separation chamber 12 is connected to the refrigerant inlet 18 of the refrigerant compressor pump 10. The outlet of the separation chamber 12 is connected to the heating chamber 11. The outlet of the heating chamber 11 is connected to the low-pressure chamber 14. The low-pressure chamber 14 is connected to the compression chamber 15. The compression chamber 15 is connected to the high-pressure chamber 16. The high-pressure chamber 16 is connected to the refrigerant outlet 19.

[0087] The heating chamber 11 is located between the separation chamber 12 and the low-pressure chamber 14. By setting up the separation chamber 12 and the heating chamber 11, and installing a gas-liquid separator 80 in the separation chamber 12 and an electric heater 20 in the heating chamber 11, the refrigerant entering the refrigerant compressor pump 10 can first pass through the gas-liquid separator 80 to separate the liquid and gaseous refrigerant, and then be heated by the electric heater 20. After gas-liquid separation, the gaseous refrigerant is then heated by the electric heater 20. This process improves the indoor heating speed of the thermal management system 90 when the refrigerant compressor pump 10 is in low-temperature conditions during winter, while also improving the safety of the electric heater 20 in heating the refrigerant and reducing the safety impact of the liquid refrigerant on the electric heater 20.

[0088] The refrigerant compression pump 10 includes a housing 50, with a heating chamber 11, a low-pressure chamber 14, a compression chamber 15, and a high-pressure chamber 16 located inside the housing 50. The refrigerant compression pump 10 also includes a partition plate 54 located between the heating chamber 11 and the separation chamber 12. The partition plate 54 reduces the uneven separation and heating caused by the mixing of refrigerant in the heating chamber 11 and the separation chamber 12, resulting in more uniform separation and heating.

[0089] Figure 6 shows another embodiment of the refrigerant compression pump 10 of this application.

[0090] The refrigerant compressor pump 10 has a heating separation chamber 13, which is connected to the refrigerant inlet 18 of the refrigerant compressor pump 10. The outlet of the heating separation chamber 13 is connected to the low-pressure chamber 14, the low-pressure chamber 14 is connected to the compression chamber 15, the compression chamber 15 is connected to the high-pressure chamber 16, and the high-pressure chamber 16 is connected to the refrigerant outlet 19. By setting the heating separation chamber 13, the heating chamber 11 and the separation chamber 12 are integrated, saving the connecting partition and thus simplifying the structure. As mentioned above, the electric heater 20 can be positioned either closer to the refrigerant inlet 18 than the gas-liquid separator 80, or further away from the refrigerant inlet 18, each with its own advantages and disadvantages. The electric heater 20 is located at the bottom of the heating separation chamber 13, which heats and evaporates the liquid refrigerant from the gas-liquid separation into gaseous refrigerant, thereby increasing the proportion of gaseous refrigerant and reducing the refrigerant charging amount.

[0091] The refrigerant compression pump 10 includes an electric heater 20 and a controller 30. The refrigerant compression pump 10 has an electrical cavity 17, and the controller 30 is located in the electrical cavity 17. The motor 60 is electrically connected to the controller 30. The electric heater 20 is located in the separation cavity 12 and is electrically connected to the controller 30. The electric heater 20 can be located at the top or bottom of the separation cavity 12.

[0092] The liquid refrigerant will deposit at the bottom of the cavity, so the electric heater 20, which is located at the bottom of the separation cavity 12, will be submerged in the liquid refrigerant, thereby improving its heat exchange efficiency.

[0093] As shown in Figure 2, this application provides a thermal management system 90, which 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. In this application, "connection" means direct connection via piping or controlled connection via piping and valves or other switching devices.

[0094] The refrigerant compression pump 10 includes a motor 60, a compression component 70, and an electric heater 20. The compression component 70 is connected to the motor 60. The refrigerant compression pump 10 has a heating chamber 11, a low-pressure chamber 14, and a high-pressure chamber 16. The heating chamber 11 is connected to the inlet of the refrigerant compression pump 10, and the high-pressure chamber 16 is connected to the outlet of the refrigerant compression pump 10. The motor 60 is located in the low-pressure chamber 14, and the electric heater 20 is located in the heating chamber 11.

[0095] The refrigerant compression pump 10 of the thermal management system 90 of this application includes a motor 60, a compression component 70, and an electric heater 20. The electric heater 20 heats the refrigerant entering the heating chamber 11. By installing the electric heater 20 inside the refrigerant compression pump 10, when the thermal management system 90 is running in heating mode, the refrigerant can be heated by the electric heater 20 even at very low temperatures, thereby improving the heating speed of the thermal management system 90 and quickly heating the indoor environment through the condenser 92.

[0096] 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 increased flow rate and work done by the heated refrigerant also increase the suction pressure of 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, thus lowering the cost and size of the electric heater 20.

[0097] 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.

[0098] Figure 7 shows another embodiment of the thermal management system 90 conforming to this application.

[0099] 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.

[0100] Figure 8 shows another embodiment of the thermal management system 90 conforming to this application.

[0101] 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.

[0102] 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.

[0103] Figure 9 shows another embodiment of the thermal management system 90 conforming to this application.

[0104] 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, 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. 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 from the condenser 92 to directly enter the heating chamber 11, the suction temperature of the refrigerant compression pump 10 is increased. This, in conjunction with the electric heater 20, improves the energy efficiency ratio of the thermal management system 90.

[0105] Figure 10 shows another embodiment of the thermal management system 90 conforming to this application.

[0106] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 includes a refrigerant compressor pump 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-cooled 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 directly heats and cools with refrigerant, resulting in high energy efficiency. The four-way reversing valve 951 can also be formed by multiple one-way valves or a combination of one-way valves and three-way valves.

[0107] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located inside the air conditioning unit 966. The outdoor heat exchanger 962, the low-temperature water tank 963, and the fan 967 form the front-end module 968. The intermediate heat exchanger 955 acts as a dual-channel heat exchanger 94. 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 operating conditions.

[0108] Figure 11 shows another embodiment of the thermal management system 90 conforming to this application.

[0109] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 includes a refrigerant compressor pump 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-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 dual secondary water loop system; indoor heating and cooling are achieved through heat exchange between the refrigerant and the coolant, preventing refrigerant from entering the air conditioning unit 966 and reducing the safety risks associated with refrigerant leakage.

[0110] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located inside the air conditioning unit 966. The outdoor heat exchanger 962, the low-temperature water tank 963, and the fan constitute the front-end module 968. The battery cooler 956 and the liquid-cooled heat exchanger 961 act as evaporators or condensers under different operating conditions.

[0111] Figure 12 shows another embodiment of the thermal management system 90 conforming to this application.

[0112] The thermal management system 90 is used for vehicle thermal management. The thermal management system 90 includes a refrigerant compressor pump 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 loop system. During cooling, refrigerant is directly supplied to the air conditioning unit 966, resulting in high energy efficiency. During heating, heat is generated through coolant, reducing the safety hazards caused by refrigerant entering the air conditioning unit. The four-way reversing valve 951 can also be formed by multiple one-way valves or a combination of one-way valves and three-way valves.

[0113] The first indoor heat exchanger 952 and the second indoor heat exchanger 953 are located inside the air conditioning unit 966. The outdoor heat exchanger 962, the low-temperature water tank 963, and the fan constitute the front-end module. Under different operating conditions, the first indoor heat exchanger 952, the second indoor heat exchanger 953, and the outdoor heat exchanger 962 respectively act as evaporators or condensers.

[0114] As shown in Figures 13 and 14, one embodiment of the electric heater 20 conforming to this application is illustrated.

[0115] The electric heater 20 includes a heating element 21 and a connecting pin 23. The heating element 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 pin 23. That is, the electric heater 20 can be a PTC thermistor electric heater 20, which has a simple structure and low cost.

[0116] Referring to Figures 1 and 13, the controller 30 includes a circuit board 31 and a control chip 32 connected to the surface of the circuit board 31. Connecting pin 23 contacts and is electrically connected to the circuit board 31. The circuit board 31 is electrically connected to the power plug 55, allowing the circuit boards 31 of the electric heater 20 and the refrigerant compressor pump 10 to share a high-voltage power cable harness, simplifying the structure and reducing costs. An adapter pin 22 connects the heating wire 212 and the connecting pin 23, which directly connects to the circuit board 31, reducing the number of connecting cables between the electric heater 20 and the circuit board 31, further reducing costs.

[0117] Referring to Figures 1, 13, and 20, optionally, the electric heater 20 includes a heating tube 21, fins 26, and connecting feet 23. One end of the connecting feet 23 is connected to the heating tube 21, and the other end is connected to the controller 30. Several fins 26 can be covered on the outside of the heating tube 21 to increase the heat exchange area between the refrigerant and the electric heater 20, thereby improving the heat exchange efficiency.

[0118] As shown in Figures 15 and 16, another embodiment of the electric heater 20 conforming to this application is presented.

[0119] The electric heater 20 includes a heating film 24, a carrier 25, and connecting pins 23. The heating film 24 is attached to the carrier 25 and electrically connected to the connecting pins 23. The controller 30 includes a circuit board 31 and a chip connected to the surface of the circuit board 31. The connecting pins 23 are physically and electrically connected to the circuit board 31. The heating film 24 can be printed onto the carrier 25, thereby reducing the size of the heater and accommodating the miniaturization design of the refrigerant compressor pump 10 integrating the compressor and heater. The carrier 25 can be made of aluminum or glass to meet lightweight design requirements. Optionally, the carrier 25 is rectangular.

[0120] The electric heater 20 can also be provided with a separator 27 on the carrier 25 to form multiple microchannels 28 for the distribution and flow of refrigerant.

[0121] As shown in Figures 17 and 18, another embodiment of the electric heater 20 conforming to this application is presented.

[0122] The electric heater 20 includes a heating film 24, a carrier 25, and connecting pins 23. The heating film 24 is attached to the carrier 25 and electrically connected to the connecting pins 23. The controller 30 includes a circuit board 31 and a chip connected to the surface of the circuit board 31. The connecting pins 23 are physically and electrically connected to the circuit board 31. The heating film 24 can be printed onto the carrier 25, thereby reducing the size of the heater and accommodating the miniaturization design of the refrigerant compressor pump 10 integrating the compressor and heater. The carrier 25 can be made of aluminum or glass to meet lightweight design requirements. Optionally, the carrier 25 is in the shape of a cylindrical tube.

[0123] The electric heater 20 can also be provided with a turbulence-inducing element 29 in the carrier 25 to turbulent the refrigerant and enhance the heat exchange between the refrigerant and the heating film.

[0124] As shown in Figures 19 and 20, another embodiment of the electric heater 20 conforming to this application is presented.

[0125] The electric heater 20 includes a heating tube 21 and fins 26. Multiple microchannels 28 are formed inside the heating tube to facilitate the distribution and flow of the refrigerant. The fins 26 increase the heat exchange area between the refrigerant and the electric heater 20, thereby improving the heat exchange efficiency.

[0126] As shown in Figures 1 and 21, the refrigerant compression pump 10 includes a sensor 40 for detecting refrigerant temperature or pressure. The sensor 40 is at least partially located in the low-pressure chamber 14 or the high-pressure chamber 16. The sensor 40 is electrically connected to the controller 30, and the controller 30 is electrically connected to the motor 60. This application integrates the sensor 40 for sensing refrigerant temperature or pressure into the refrigerant compression pump 10, and the pressure or temperature information is transmitted through an external communication interface, saving wiring harness costs for the client.

[0127] Sensor 40 includes a first sensor 48 and a second sensor 49. The first sensor 48 is at least partially located in the low-pressure chamber 14, and the second sensor 49 is at least partially located in the high-pressure chamber 16. The first sensor 48 and the second sensor 49 are electrically connected to the controller 30. The first sensor 48 can sense the temperature and pressure of the refrigerant in the low-pressure chamber 14, and the second sensor 49 can sense the temperature and pressure of the refrigerant in the high-pressure chamber 16. That is, both the first sensor 48 and the second sensor 49 are temperature and pressure sensors 40. By integrating the sensors 40 in the thermal management system 90 into the refrigerant compressor pump 10, the temperature and pressure signals of the refrigerant in the low-pressure chamber 14 and the high-pressure chamber 16 are detected by the first sensor 48 and the second sensor 49, respectively, thereby facilitating the control of the thermal management system 90. This application integrates P / T sensors on both the low-pressure and high-pressure sides, and the pressure and temperature information is sent through an external communication interface, saving on wiring costs for the client.

[0128] As shown in Figures 21 to 24, each sensor 40 includes a housing 41, a sensing element 42, and a connection terminal 43. The housing 41 includes a detection channel 44, which is connected to the low-pressure chamber 14 or the high-pressure chamber 16. The sensing element 42 is at least partially located inside the housing 41. The connection terminal 43 is electrically connected to the sensing element 42 and is physically and electrically connected to the circuit board 31.

[0129] The sensor 40 includes a circuit board 45, and the sensing elements 42 include a temperature sensing element 46 and a pressure sensing element 47, which are electrically connected to the circuit board 45. The circuit board 45 can be a printed circuit board or a ceramic circuit board. Referring to Figure 22, the connection terminal 43 includes a first end 431 and a second end 432 located on opposite sides of the connection terminal 43. The first end 431 is physically and electrically connected to the circuit board 45, and the second end 432 is physically and electrically connected to the circuit board 31 of the controller 30. The connection terminal 43 is one of a coil spring or a metal spring. The first end 431 of the connection terminal 43 elastically abuts against or is soldered to the circuit board 45, and the second end 432 of the connection terminal 43 elastically abuts against or is soldered to the circuit board 31. By directly connecting the connection terminal 43 to the circuit board 31 of the controller 30, connecting cables are saved, the structure is simpler, and costs are reduced.

[0130] As shown in Figure 21, the temperature-sensitive element 46 can be a leaded thermistor (NTC), as shown in Figure 23, or it can be a surface-mount thermistor chip (MEMS chip). As shown in Figure 24, the pressure-sensitive element 47 can be a ceramic capacitor-type pressure-sensitive element, as shown in Figure 23, or it can be a surface-mount pressure-sensitive chip (MEMS chip). Ceramic capacitor-type pressure-sensitive elements are less expensive, while surface-mount pressure-sensitive chips are simpler to install and easier to integrate.

[0131] As shown in Figure 23, the temperature-sensitive element 46 and the pressure-sensitive element 47 can be integrated into a single MEMS chip sensing element 42, thus simplifying the structure. The pressure-sensitive element 47 can be mounted on the front side of the circuit board 45 facing the refrigerant, as shown in Figures 11 and 13, or it can 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 its binding wires, thus protecting it. Placing the pressure-sensitive element 47 on the front side improves the sensor's detection response speed.

[0132] 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.

[0133] As shown in Figures 25 to 27, 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.

[0134] 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 sandwiched between the first casing 51 and the second casing 52, and the third casing 53 is bolted to the second casing 52. As shown in Figure 26, the exterior of the main bearing housing 761 can also form part of the outer casing 50. Both the first casing 51 and the second casing 52 are cylindrical, each having 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 casing 51, and the rotor 64 and stator 61 of the motor 60 are located in the second cavity 521 of the second casing 52. The third casing 53 includes two interlocking third half-shells 531, and has an electrical cavity 17 in which the controller 30 is located.

[0135] 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.

[0136] 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, and the compression component 70 forms the chamber wall of the compression chamber 15. The moving scroll 71 includes a moving disk body 711 and moving scroll teeth 712, and the stationary scroll 72 includes a stationary disk body 721 and stationary scroll teeth 722. The moving scroll teeth 712 and the stationary scroll teeth 722 mesh with each other. The moving scroll 71 is connected to the rotating shaft 65, and the stationary scroll 72 has an exhaust port 723. The refrigerant compression pump 10 includes an exhaust valve plate 74, which cooperates with the exhaust port to control 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, it can open the exhaust valve plate 74, thereby releasing the refrigerant to the high-pressure chamber 16.

[0137] The compressor also includes an eccentric sleeve 764 and a rolling bearing 768. The moving disc body 711 has a bearing groove 769 on the side near the main bearing 762, and the rolling bearing 768 is located within the bearing groove 769. One end of the eccentric sleeve 764 is connected to the rotating shaft 65, and the other end is connected to the rolling bearing 768. The rotation of the rotor 64 drives the rotating shaft 65 to move, which in turn drives the eccentric sleeve 764 to perform eccentric motion. This, in turn, causes the moving scroll 71 to rotate around the stationary scroll 72, compressing the refrigerant that enters the compression chamber 15.

[0138] The oil separator 765 is located inside the high-pressure chamber 16, separating the refrigerant and lubricating oil entering the high-pressure chamber 16. The oil return structure 766 is located between the first housing 51 and the bearing housing 761, as well as inside the bearing housing 761. The oil return structure 766 consists of through holes that guide the lubricating oil separated from the oil in the high-pressure chamber 16 to the low-pressure chamber 14 or the compression chamber 15 to lubricate moving parts such as bearings and the rotating scroll 71, reducing wear between parts.

[0139] The refrigerant compression pump 10 can be provided with a back pressure chamber 75 located between the moving scroll 71 and the bearing housing 761. A back pressure connecting hole 713 is provided in the moving scroll 71 to connect the back pressure chamber 75 and the compression chamber 15, thereby providing a driving force for the moving scroll 71 to move closer to the stationary scroll 72, reducing the risk of refrigerant leakage caused by excessive pressure in the compression chamber 15 leading to the separation of the moving scroll 71 and the stationary scroll 72.

[0140] As shown in Figures 1 and 25, the refrigerant compressor pump 10 includes a power connector 55 and a signal connector 56. Both the power connector 55 and the signal connector 56 are connected to the housing 50. The power connector 55 is electrically connected to the circuit board 31, and the signal connector 56 is also electrically connected to the circuit board 31. The power connector 55 allows the high-voltage wiring harnesses of the motor 60 and the electric heater 20 inside the refrigerant compressor pump 10 to share a single high-voltage wiring harness, thus saving on the cost of the high-voltage wiring harness. The sensor 40 is electrically connected to the signal connector 56, which allows the low-voltage wiring harnesses of the circuit board 31 and the sensor 40 to share the same wiring harness, thus saving on the cost of the low-voltage wiring harness.

[0141] As shown in Figures 3 to 6, the gas-liquid separator 80 includes a U-shaped tube 81. The inlet of the U-shaped tube 81 is connected to the refrigerant inlet 18 of the refrigerant compressor pump 10, and the outlet of the U-shaped tube 81 is connected to the low-pressure chamber 14. The gas-liquid separator 80 with the U-shaped tube 81 has a simple structure, is easy to manufacture, and has a lower cost.

[0142] 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. The first horizontal tube 812 is provided with an oil return hole 814. Optionally, the oil return hole 814 can also be provided in the first vertical tube 811 and the second vertical tube 813 to improve the oil return rate of the refrigerant compressor pump 10.

[0143] The refrigerant compression pump 10 of this application has a gas-liquid separator function, which can replace the gas-liquid separator in the thermal management system and save costs.

[0144] Figures 28 and 29 show another embodiment of the gas-liquid separator 80 of this application.

[0145] 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.

[0146] 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.

[0147] Figure 30 shows another embodiment of the gas-liquid separator 80 of this application.

[0148] 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.

[0149] The gas-liquid separator 80 includes a filter screen 84 connected to the bottom of a separation tube 89. The bottom of the separation tube 89 has an oil return hole 814. The filter screen 84 filters impurities in the liquid refrigerant, facilitating the return of lubricating oil from the oil return hole 814 to the low-pressure chamber 14. The top of the inner cylinder 82 also has a balancing through-hole 896 to balance the pressure difference. Because the separation tubes 89 are arranged in parallel, the distance between them is shortened, thereby reducing noise within the gas-liquid separator 80.

[0150] A control method for a thermal management system 90, comprising:

[0151] The system provides a refrigerant compressor pump 10, a condenser 92, a throttling device 93, an evaporator 91, and a controller 30; the refrigerant compressor pump 10 includes a compression component 70 and an electric heater 20;

[0152] The controller 30 controls the thermal management system 90 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.

[0153] 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.

[0154] In the control method of the thermal management system 90 of this application, 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. When the thermal management system 90 is working at a low temperature, it can directly heat the refrigerant through the electric heater 20, thereby quickly heating the room.

[0155] The refrigerant returning to the refrigerant compressor pump 10 is heated by the internal electric heater 20 and then compressed again, including:

[0156] The refrigerant returning to the refrigerant compressor pump 10 undergoes gas-liquid separation to form 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, where it is compressed again.

[0157] In the control method of the thermal management system 90 of this application, the refrigerant returning to the refrigerant compressor pump 10 is heated by the electric heater 20 after gas-liquid separation, which improves the safety of the electric heater 20 in the face of liquid refrigerant.

[0158] Another implementation of the thermal management system 90 is described below.

[0159] The thermal management system 90 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.

[0160] The refrigerant compression 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 is connected to the high-pressure chamber 16. The refrigerant compression 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, the compression component 70 is located in the compression chamber 15, and the electric heater 20 is located in the heating chamber 11.

[0161] 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 heating cavity 11 and the low-pressure cavity 14 are located on the same side of the electrical cavity 17.

[0162] The refrigerant compression pump 10 of the thermal management system 90 of this application includes a motor 60, a compression component 70, and an electric heater 20. The electric heater 20 is at least partially located in the heating chamber 11. The heating chamber 11 and the low-pressure chamber 14 are located on the same side of the electrical chamber 17. The electric heater and the refrigerant compression pump 10, including the motor 60, can share a wiring harness for connection to external equipment, thereby reducing costs.

[0163] 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 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.

[0164] 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 compression pump 10.

[0165] This application provides a control method for a thermal management system 90, which includes:

[0166] The controller 30 controls the thermal management system 90 to run 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.

[0167] 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.

[0168] In the control method of the thermal management system 90 of this application, 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. The electric heater and the motor 60 of the refrigerant compressor pump 10 can share the wiring harness connected to the external equipment, thereby reducing costs.

[0169] The refrigerant returning to the refrigerant compressor pump 10 is heated by the internal electric heater 20 and then compressed again, including:

[0170] The refrigerant returning to the refrigerant compressor pump 10 undergoes gas-liquid separation to form 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, where it is compressed again.

[0171] In the control method of the thermal management system 90 of this application, the refrigerant returning to the refrigerant compressor pump 10 is heated by the electric heater 20 after gas-liquid separation, which improves the safety of the electric heater 20 in the face of liquid refrigerant.

[0172] Another implementation of the thermal management system 90 is described below.

[0173] A thermal management system 90 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.

[0174] The refrigerant compression pump 10 includes a housing 50, a motor 60, a compression component 70, a sensor 40, and a signal connector 56. The motor 60 is connected to the compression component 70, and the signal connector 56 is connected to the housing 50.

[0175] The refrigerant compressor pump 10 has a low-pressure chamber 14 and a high-pressure chamber 16 located within a housing 50. The motor 60 is at least partially located in the low-pressure chamber 14, and the sensor 40 is at least partially located in at least one of the low-pressure chamber 14 and the high-pressure chamber 16. The sensor 40 is electrically connected to a signal connector 56.

[0176] The refrigerant compression pump 10 of the thermal management system 90 of this application includes a motor 60, a compression component 70 and a sensor 40. The sensor 40 is at least partially located in the low-pressure chamber 14 or the high-pressure chamber 16. The sensor 40 is placed inside the refrigerant compression pump 10 and shares a signal connector 56 with the refrigerant compression pump 10, thereby saving the wiring harness cost of the sensor 40.

[0177] This application provides a control method for a thermal management system 90, including:

[0178] The system provides a refrigerant compressor pump 10, a condenser 92, a throttling device 93, an evaporator 91, and a controller 30; the refrigerant compressor pump 10 includes a compression component 70 and a sensor 40;

[0179] The controller 30 controls the thermal management system 90 to run 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.

[0180] Sensor 40 detects at least one of the temperature and pressure of the refrigerant in the refrigerant compressor pump 10 and feeds it back to controller 30.

[0181] In the control method of the thermal management system 90 of this application, the sensor 40 is at least partially located in the low-pressure chamber 14 or the high-pressure chamber 16. The sensor 40 is placed inside the refrigerant compressor pump 10 and shares the signal plug-in terminal 56 with the refrigerant compressor pump 10, thereby saving the wiring harness cost of the sensor 40.

[0182] Sensor 40 detects at least one of the refrigerant temperature and pressure within the refrigerant compressor pump 10 and feeds it back to controller 30, including:

[0183] Sensor 40 detects the temperature and pressure information of the refrigerant in the low-pressure chamber 14 and feeds it back to controller 30. Sensor 40 also detects the temperature and pressure signals of the refrigerant in the high-pressure chamber 16 and feeds them back to controller 30. By monitoring the temperature and pressure of the refrigerant in the low-pressure chamber 14 and the high-pressure chamber 16, sensor 40 can more accurately detect the temperature and pressure difference in the thermal management system, thereby simplifying the control of the thermal management system.

[0184] Another implementation of the thermal management system 90 is described below.

[0185] A thermal management system 90 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.

[0186] The refrigerant compressor pump 10 includes:

[0187] The housing 50 has a refrigerant inlet 18 and a refrigerant outlet 19. The refrigerant compressor pump 10 has 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 are located inside the housing 50. The high-pressure chamber 16 is connected to the refrigerant outlet 19.

[0188] Motor 60 is located in low-pressure chamber 14, which is connected to separation chamber 12.

[0189] A compression component 70 is connected to a motor 60, which drives the compression component 70 to operate. The refrigerant compression pump 10 has a compression chamber 15, and the compression component 70 at least partially forms the wall of the compression chamber 15. The compression chamber 15 is in communication with the high-pressure chamber 16.

[0190] A gas-liquid separator 80 is located at least partially in a separation chamber 12, which is connected to a refrigerant inlet 18.

[0191] The refrigerant compression pump 10 of the thermal management system 90 of this application includes a motor 60, a compression component 70, and a gas-liquid separator 80. By using the gas-liquid separator 80 installed inside the refrigerant compression pump 10, the refrigerant compression pump 10 and the gas-liquid separator 80 can share the same housing 50, which saves costs and reduces the risk of refrigerant leakage.

[0192] A control method for a thermal management system 90, the thermal management system 90 including a refrigerant compressor pump 10, a condenser 92, a throttling device 93, and an evaporator 91; the refrigerant compressor pump 10 includes a compression component 70 and a gas-liquid separator 80, and the control method for the thermal management system 90 includes:

[0193] The thermal management system 90 operates in heating mode. The refrigerant compressor pump 10 compresses the refrigerant, and 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.

[0194] The refrigerant returning to the refrigerant compressor pump 10 is separated into gaseous refrigerant and liquid refrigerant by the gas-liquid separator 80. The gaseous refrigerant is compressed again by the compression section to form a circulation loop.

[0195] In the control method of the thermal management system 90 of this application, the refrigerant returning to the refrigerant compressor pump 10 is separated into gaseous refrigerant and liquid refrigerant by the gas-liquid separator 80. The refrigerant compressor pump 10 and the gas-liquid separator 80 can share the same outer casing 50, which saves costs and reduces the risk of refrigerant leakage.

[0196] The refrigerant returning to the refrigerant compressor pump 10 is separated into gaseous and liquid refrigerant by the gas-liquid separator 80. The gaseous refrigerant is then compressed again by the compression section to form a circulation loop, including:

[0197] After being heated by the electric heater 20, the gaseous refrigerant enters the low-pressure chamber 14 and the compression chamber 15, and is compressed again in the compression chamber 15.

[0198] In the control method of the thermal management system 90 of this application, the refrigerant returning to the refrigerant compressor pump 10 is heated by the electric heater 20 after gas-liquid separation, which improves the safety of the electric heater 20 in the face of liquid refrigerant.

[0199] The above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. The understanding of this specification should be based on those skilled in the art. For example, directional descriptions such as "front", "back", "left", "right", "up", and "down" are only used to describe the relationship between objects and are not substantial limitations. "Multiple" means at least two or more.

[0200] Although this specification has described the present application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present application, and all technical solutions and improvements that do not depart 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 compressor pump includes: a housing (50) having a refrigerant inlet (18) and a refrigerant outlet (19), the refrigerant compressor pump having a low-pressure chamber (14), a compression chamber (15) and a high-pressure chamber (16), the low-pressure chamber (14), the compression chamber (15) and the high-pressure chamber (16) being located inside the housing (50), the high-pressure chamber (16) being connected to the refrigerant outlet (19); a motor (60) located in the low-pressure chamber (14), the low-pressure chamber (14) being connected to the refrigerant inlet (18); and a compression component (70), the motor (60) being connected to the compression component (70), the motor (60) being able to drive the compression component (70) to operate, the compression component (70) being... The refrigerant compressor pump includes at least a portion of the wall of the compression chamber (15), which is connected to the high-pressure chamber (16); a signal connector (56) connected to the housing (50) and used for external communication; and a sensor (40) at least partially located in the low-pressure chamber (14) or the high-pressure chamber (16) and electrically connected to the signal connector (56); the refrigerant compressor pump includes a controller (30), the sensor (40) is electrically connected to the controller (30), the controller (30) includes a circuit board (31), and the signal connector (56) is electrically connected to the circuit board (31).

2. The refrigerant compression pump as described in claim 1, characterized in that, The refrigerant compressor pump has an electrical cavity (17), and the controller (30) is located in the electrical cavity (17). The controller (30) is electrically connected to the motor (60). The controller (30) includes a control chip (32) mounted on a circuit board (31). The sensor (40) includes a housing (41), a sensitive element (42), and a connection terminal (43). The housing (41) has a detection channel (44), which is connected to a low-pressure cavity (14) or a high-pressure cavity (16). The sensitive element (42) is at least partially located inside the housing (41). The connection terminal (43) is electrically connected to the sensitive element (42) and is physically and electrically connected to the circuit board (31).

3. The refrigerant compression pump as described in claim 2, characterized in that, The sensor (40) includes a circuit board (45), and the sensing element (42) includes a temperature sensing element (46) and a pressure sensing element (47). The temperature sensing element (46) and the pressure sensing element (47) are electrically connected to the circuit board (45). The connection terminal (43) includes a first end (431) and a second end (432) located on opposite sides of the connection terminal (43). The first end (431) is physically and electrically connected to the circuit board (45), and the second end (432) is physically and electrically connected to the circuit board (31).

4. The refrigerant compression pump as described in claim 3, characterized in that, The connecting terminal (43) is one of a coil spring or a metal spring sheet. The first end (431) of the connecting terminal (43) is elastically abutted or welded to the circuit board (45), and the second end (432) of the connecting terminal (43) is elastically abutted or welded to the circuit board (31).

5. The refrigerant compression pump according to any one of claims 1 to 4, characterized in that, The sensor (40) includes a first sensor (48) and a second sensor (49). The first sensor (48) is at least partially located in the low-pressure chamber (14), and the second sensor (49) is at least partially located in the high-pressure chamber (16). The first sensor (48) is electrically connected to the controller (30), and the second sensor (49) is electrically connected to the controller (30). The first sensor (48) is capable of sensing the temperature and pressure of the refrigerant in the low-pressure chamber (14), and the second sensor (49) is capable of sensing the temperature and pressure of the refrigerant in the high-pressure chamber (16).

6. The refrigerant compression pump as described in claim 5, characterized in that, 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 a compression component (70). The stator (61) includes a stator core (62) and enameled wire (63). The enameled wire (63) is electrically connected to a circuit board (31) via an adapter, or the enameled wire (63) is directly connected to the circuit board (31). The compression component (70) includes a moving scroll (71) and a stationary scroll (72). The compression chamber ( 15) At least partially located between the moving scroll (71) and the stationary scroll (72), the moving scroll (71) comprising a moving disk body (711) and moving scroll teeth (712), the stationary scroll (72) comprising a stationary scroll (72) and stationary scroll teeth (722), the moving scroll teeth (712) and stationary scroll teeth (722) meshing with each other; the moving scroll (71) is connected to the rotating shaft (65), the stationary scroll (72) has an exhaust port (723), the refrigerant compressor pump includes an exhaust valve plate (74), the exhaust valve plate (74) hole cooperating with the exhaust port (723).

7. A thermal management system, characterized in that, The 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) includes a housing (50), a motor (60), a compression component (70), a sensor (40), and a signal connector (56). The motor (60) and the compression component (70) are connected. The signal connector (56) is connected to the housing (50); the refrigerant compressor pump (10) has a low-pressure chamber (14) and a high-pressure chamber (16) located within the housing (50), the motor (60) is at least partially located in the low-pressure chamber (14), and the sensor (40) is at least partially located in at least one of the low-pressure chamber (14) and the high-pressure chamber (16); the sensor (40) is electrically connected to the signal connector (56); the refrigerant compressor pump includes a controller (30), the sensor (40) is electrically connected to the controller (30), the controller (30) includes a circuit board (31), and the signal connector (56) is electrically connected to the circuit board (31).

8. The thermal management system as described in claim 7, characterized in that, The sensor (40) includes a first sensor (48) and a second sensor (49). The first sensor (48) is at least partially located in the low-pressure chamber (14), and the second sensor (49) is at least partially located in the high-pressure chamber (16). The first sensor (48) is electrically connected to the controller (30), and the second sensor (49) is electrically connected to the controller (30). The first sensor (48) is capable of sensing the temperature and pressure of the refrigerant in the low-pressure chamber (14), and the second sensor (49) is capable of sensing the temperature and pressure of the refrigerant in the high-pressure chamber (16).

9. A control method for a thermal management system as described in claim 7 or 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 sensor (40) detects at least one of the temperature and pressure of the refrigerant in the refrigerant compressor pump (10) and feeds it back to the controller (30).

10. The control method as described in claim 9, characterized in that, The sensor (40) detects at least one of the temperature and pressure of the refrigerant in the refrigerant compressor pump (10) and feeds it back to the controller (30), including: the sensor (40) detects the temperature and pressure of the refrigerant in the low-pressure chamber (14) and feeds it back to the controller (30), and the sensor (40) detects the temperature and pressure of the refrigerant in the high-pressure chamber (16) and feeds it back to the controller (30).

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