Temperature regulation and control system based on self-created heat of compressor

Abstract

The invention provides a temperature regulation and control system based on self-created heat of a compressor. The temperature regulation and control system comprises the compressor, a water-cooled condenser, a gas-liquid separator, an electromagnetic valve, a first expansion valve, a second expansion valve, an outdoor heat exchanger, a first water pump, a three-way proportional valve, a warm air core and a battery temperature adjusting device. The gas-liquid separator, the compressor and the first input end of the water-cooling condenser are sequentially connected, the first output end of the water-cooling condenser is connected with the gas-liquid separator through the electromagnetic valve and the first expansion valve, and the flow when the first expansion valve is fully opened is the same as the flow when the electromagnetic valve is opened; the second expansion valve and the outdoor heat exchanger are connected to the two ends of the electromagnetic valve in parallel. A second output end of the water-cooling condenser is connected with a first end of a three-way proportional valve through a first water pump, and a second end and a third end of the three-way proportional valve are respectively connected with a second input end of the water-cooling condenser through a warm air core body and a battery temperature adjusting device. According to the system provided by the invention, temperature regulation and control can be performed by utilizing self-created heat of the compressor.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of electric vehicles, and more particularly to a temperature control system based on compressor self-generated heat. Background Art

[0002] With the development of electric vehicles, the number of electric vehicles is gradually increasing. The power source of electric vehicles is the on-board battery, which is not only used as the power source for electric vehicles to travel, but also as the power source for heating the passenger compartment of electric vehicles, which significantly reduces the battery life. At the same time, low battery temperature will also reduce the battery life.

[0003] In order to solve the problem of poor battery life in electric vehicles, the existing technology uses a compressor to compress refrigerant to heat the on-board battery and the passenger compartment. The exhaust port of the compressor is usually equipped with a bypass branch to transport high-temperature refrigerant to the air inlet of the compressor, which improves the working efficiency of the compressor by increasing the density and mass flow of the refrigerant at the compressor inlet. However, the bypass valve needs to control the refrigerant flow through the regulating valve at the front end of the condenser, so it is not easy to control the refrigerant temperature at the compressor inlet. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a temperature control system based on compressor self-generated heat to solve the above-mentioned problems.

[0005] The present application provides a temperature control system based on compressor self-generated heat, including a compressor, a water-cooled condenser, a gas-liquid separator, a solenoid valve, a first expansion valve, a second expansion valve, an outdoor heat exchanger, a first water pump, a three-way proportional valve, a heater core and a battery temperature control device; The output end of the gas-liquid separator, the compressor and the first input end of the water-cooled condenser are connected in sequence, and the first output end of the water-cooled condenser is connected to the input end of the gas-liquid separator through the solenoid valve and the first expansion valve in sequence; the flow rate when the first expansion valve is fully opened is the same as the flow rate when the solenoid valve is opened; The output end of the second expansion valve is connected to the input end of the outdoor heat exchanger, and the second expansion valve and the outdoor heat exchanger are connected in parallel at both ends of the solenoid valve; The second output end of the water-cooled condenser is connected to the first end of the three-way proportional valve through the first water pump, the second end of the three-way proportional valve is connected to the input end of the heater core, the third end of the three-way proportional valve is connected to the first input end of the battery temperature control device, the output end of the heater core is connected to the second input end of the water-cooled condenser, and the first output end of the battery temperature control device is connected to the second input end of the water-cooled condenser.

[0006] According to the technical solution provided in the embodiment of the present application, it also includes a third expansion valve, and the output end of the solenoid valve is also connected to the second input end of the battery temperature control device through the third expansion valve, and the second output end of the battery temperature control device is connected to the input end of the gas-liquid separator.

[0007] According to the technical solution provided in the embodiment of the present application, it also includes a fourth expansion valve and an evaporator, and the output end of the solenoid valve is also connected to the input end of the gas-liquid separator through the fourth expansion valve and the evaporator in sequence.

[0008] According to the technical solution provided in the embodiment of the present application, the input end and the output end of the gas-liquid separator are respectively provided with a first temperature and pressure sensor and a second temperature and pressure sensor, and the first output end of the water-cooled condenser is provided with a third temperature and pressure sensor.

[0009] According to the technical solution provided in the embodiment of the present application, including a self-generated heating mode, when in the self-generated heating mode, the solenoid valve, the first expansion valve and the first water pump are turned on, the second expansion valve, the third expansion valve and the fourth expansion valve are closed, and the conductance between the first end and the second end, and the first end and the third end of the three-way proportional valve is adjusted to a set ratio.

[0010] According to the technical solution provided in the embodiment of the present application, including a passenger compartment heating mode, when in the passenger compartment heating mode, the solenoid valve, the third expansion valve and the fourth expansion valve are closed, the first expansion valve is fully open, the second expansion valve and the first water pump are turned on, and the three-way proportional valve is adjusted to the first end and the second end being connected and the first end and the third end being closed.

[0011] According to the technical solution provided in the embodiment of the present application, including a battery heating mode, when in the battery heating mode, the solenoid valve, the third expansion valve and the fourth expansion valve are closed, the first expansion valve is fully open, the second expansion valve and the first water pump are turned on, and the three-way proportional valve is adjusted to the first end and the third end being connected and the first end and the second end being closed.

[0012] According to the technical solution provided in the embodiment of the present application, including a heating and dehumidification mode, when in the heating and dehumidification mode, the solenoid valve, the third expansion valve and the evaporator are opened, and the first expansion valve, the second expansion valve, the fourth expansion valve and the first water pump are closed.

[0013] According to the technical solution provided in the embodiment of the present application, including a passenger compartment cooling mode, when in the passenger compartment cooling mode, the solenoid valve, the first expansion valve, the third expansion valve and the first water pump are closed, and the second expansion valve, the fourth expansion valve and the evaporator are opened.

[0014] According to the technical solution provided in the embodiment of the present application, including a battery cooling mode, when in the battery cooling mode, the solenoid valve, the first expansion valve, the fourth expansion valve and the first water pump are closed, and the second expansion valve, the third expansion valve and the battery temperature control device are opened.

[0015] Compared with the prior art, the beneficial effect of the present application is that: by directly connecting the output end of the compressor to the input end of the water-cooled condenser, and connecting the water-cooled condenser and the gas-liquid separator through the solenoid valve and the first expansion valve, the high-temperature and high-pressure liquid refrigerant compressed by the compressor directly enters the water-cooled condenser to release heat, and then flows back to the gas-liquid separator through the solenoid valve and the first expansion valve in turn. The refrigerant is not diverted, so there is no need to adjust the refrigerant entering the water-cooled condenser and flowing back to the gas-liquid separator. The high-temperature refrigerant can directly increase the density and mass flow of the refrigerant at the input end of the compressor, improve the working efficiency of the compressor, and then generate more heat, so as to realize the self-generated heat of the compressor; the refrigerant is gasified by the throttling effect of the first expansion valve, thereby avoiding the phenomenon of liquid accumulation in the gas-liquid separator, and the flow rate of the first expansion valve is the same as that of the solenoid valve when it is fully opened. When the first expansion valve does not need to be throttled, the first expansion valve can be used as a solenoid valve; the heat released by the refrigerant can be used to heat the heater core and the battery temperature control device through the cooperation of the compressor and the three-way proportional valve, thereby heating the passenger compartment and the battery. The temperature control system provided in the present application has the advantages of effectively improving the working efficiency of the compressor and heating the passenger compartment and the battery through the heat generated by the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a schematic diagram of the principle of the cooperation between the compressor and the bypass valve in the prior art; Figure 2 This is a schematic diagram of the structure of the temperature control system based on compressor self-generated heat provided in this application.

[0017] Figure numbers: 1. compressor; 2. water-cooled condenser; 3. gas-liquid separator; 4. solenoid valve; 5. first expansion valve; 6. second expansion valve; 7. outdoor heat exchanger; 8. first water pump; 9. three-way proportional valve; 10. heater core; 11. battery temperature control device; 12. third expansion valve; 13. fourth expansion valve; 14. evaporator; 15. first temperature and pressure sensor; 16. second temperature and pressure sensor; 17. third temperature and pressure sensor; 18. vehicle battery; 19. second water pump; 20. powertrain control device. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] like Figure 1 As shown, in the prior art, the compressor exhaust port is connected to a bypass branch, and a bypass valve is provided on the bypass branch. When the bypass valve is opened, part of the refrigerant discharged by the compressor enters the water-cooled condenser, and the other part directly returns to the gas-liquid separator through the bypass branch, and then to the compressor suction port. The bypass branch is mainly to solve the heating problem in a low-temperature environment. When the ambient temperature is low, if there is no bypass branch, the refrigerant needs to pass through the outdoor heat exchanger or evaporator or battery temperature control device to return to the gas-liquid separator. No matter which path is returned, the refrigerant temperature will decrease, which will lead to a lower temperature of the refrigerant inhaled by the compressor, a small suction density of the compressor, a small refrigerant flow rate, and a compressor exhaust temperature that is easily too high. If the speed of the compressor is increased, the suction pressure will be lower, so the compressor speed can only be limited; if there is a bypass branch, the temperature of the compressed inlet refrigerant can be increased, thereby increasing the refrigerant density and mass flow rate, and the compressor can move to a higher speed to increase the system heating capacity.

[0021] In the prior art, since the refrigerant discharged from the compressor is divided into two parts and the two parts affect each other, it is difficult to adjust the refrigerant flow of the two parts, and thus the accuracy of temperature control cannot be guaranteed. Therefore, there is an urgent need to provide a temperature control system to solve the above problems.

[0022] Please refer to Figure 2 , the present application provides a temperature control system based on compressor self-generated heat, including a compressor 1, a water-cooled condenser 2, a gas-liquid separator 3, a solenoid valve 4, a first expansion valve 5, a second expansion valve 6, an outdoor heat exchanger 7, a first water pump 8, a three-way proportional valve 9, a heater core 10 and a battery temperature control device 11; The output end of the gas-liquid separator 3, the compressor 1 and the first input end of the water-cooled condenser 2 are connected in sequence, and the first output end of the water-cooled condenser 2 is connected to the input end of the gas-liquid separator 3 through the solenoid valve 4 and the first expansion valve 5 in sequence; when the first expansion valve 5 is fully opened, the flow rate is the same as when the solenoid valve 4 is opened; The output end of the second expansion valve 6 is connected to the input end of the outdoor heat exchanger 7, and the second expansion valve 6 and the outdoor heat exchanger 7 are connected in parallel at both ends of the solenoid valve 4; The second output end of the water-cooled condenser 2 is connected to the first end of the three-way proportional valve 9 through the first water pump 8, the second end of the three-way proportional valve 9 is connected to the input end of the heater core 10, the third end of the three-way proportional valve 9 is connected to the first input end of the battery temperature control device 11, the output end of the heater core 10 is connected to the second input end of the water-cooled condenser 2, and the first output end of the battery temperature control device 11 is connected to the second input end of the water-cooled condenser 2.

[0023] Specifically, the temperature control system based on compressor self-generated heat includes a refrigerant side and a water circuit side, wherein the components on the refrigerant side are connected as follows: The output end of the gas-liquid separator 3 is connected to the input end of the compressor 1 through a refrigerant pipeline, the output end of the compressor 1 is connected to the refrigerant inlet (i.e., the first input end) of the water-cooled condenser 2 through a refrigerant pipeline, the refrigerant outlet (i.e., the first output end) of the water-cooled condenser 2 is connected to the input end of the solenoid valve 4 through a refrigerant pipeline, the output end of the solenoid valve 4 is connected to the input end of the first expansion valve 5 through a refrigerant pipeline, the output end of the first expansion valve 5 is connected to the input end of the gas-liquid separator 3 through a refrigerant pipeline, thereby realizing refrigerant circulation; The input end of the second expansion valve 6 is connected to the refrigerant pipeline between the water-cooled condenser 2 and the solenoid valve 4, the output end of the second expansion valve 6 is connected to the input end of the outdoor heat exchanger 7, and the output end of the outdoor heat exchanger 7 is connected to the refrigerant pipeline between the solenoid valve 4 and the first expansion valve 5; the first expansion valve 5 and the second expansion valve 6 are electronic expansion valves, and the first expansion valve 5 is a large-diameter expansion valve. When the first expansion valve 5 is not fully opened, it can be used for refrigerant throttling. When the first expansion valve 5 is fully opened, it has the same function as the solenoid valve 4; The device connections on the waterway side are: The water outlet of the water-cooled condenser 2 is connected to the input end of the first water pump 8 through a water pipeline, and the output end of the first water pump 8 is connected to the first end of the three-way proportional valve 9 through a water pipeline. The second end and the third end of the three-way proportional valve 9 are respectively connected to the passenger compartment heating pipeline and the battery heating pipeline, wherein the passenger compartment heating pipeline includes the heater core 10, the second end of the three-way proportional valve 9 is connected to the input end of the heater core 10 through a water pipeline, and the output end of the heater core 10 is connected to the water inlet of the water-cooled condenser 2 through a water pipeline. The battery heating pipeline includes the battery temperature regulating device 11, the third end of the three-way proportional valve 9 is connected to the water input end of the battery temperature regulating device 11 through a water pipeline, and the water output end of the battery temperature regulating device 11 is connected to the second input end of the water-cooled condenser 2 through a water pipeline; the battery temperature regulating device 11 also includes another water input end and another water output end, and the other water output end is connected to the other water input end through a second water pump 19, an on-board battery 18 and a powertrain control device 20 in sequence.

[0024] Working process: On the refrigerant side, the compressor 1 absorbs refrigerant from the gas-liquid separator 3 during operation, and pressurizes the refrigerant to a high-temperature and high-pressure liquid form. The temperature of the high-temperature and high-pressure liquid refrigerant decreases after releasing heat in the water-cooled condenser 2. Although the temperature decreases, it still maintains a high-temperature and high-pressure liquid form, and then returns to the gas-liquid separator 3 through the solenoid valve 4 and the first expansion valve 5 to complete the circulation of the refrigerant; on the waterway side, the heat released by the high-temperature and high-pressure liquid refrigerant is transferred to the waterway side of the water-cooled condenser 2, thereby heating the circulating water, and turning on the first water pump 8 to promote the circulation of the circulating water on the waterway side. By adjusting the opening ratio of the second end and the third end of the three-way proportional valve 9, the circulating water flow in the passenger heating pipeline and the battery heating pipeline is adjusted. The circulating water in the passenger heating pipeline heats the passenger compartment through the heater core 10, and the circulating water in the battery heating pipeline indirectly heats the battery by heating the circulating water in another waterway of the battery temperature control device 11.

[0025] Working principle: On the refrigerant side, the high-pressure liquid refrigerant cooled by the water-cooled condenser 2 flows back to the gas-liquid separator 3 through the solenoid valve 4 and the first expansion valve 5 in turn. Although the temperature of the refluxed refrigerant is reduced, it is still relatively high temperature, which is used to increase the temperature of the refrigerant sucked into the input end of the compressor 1, increase the density and mass flow of the refrigerant, and thus enable the compressor 1 to work at a higher speed, increase the heating capacity of the system, and adjust the temperature by the self-generated heat of the compressor 1; since the first expansion valve 5 is a large-caliber expansion valve, through the throttling effect of the first expansion valve 5, the high-pressure liquid refrigerant becomes a low-pressure gaseous refrigerant after passing through the first expansion valve 5 and then flows back to the gas-liquid separator 3, avoiding liquid accumulation in the gas-liquid separator 3; on the waterway side, the heat generated by the self-generated heat of the compressor 1 cooperates with the proportional adjustment of the circulating water by the three-way proportional valve 9, so that the temperature of the passenger compartment and the battery can be controlled respectively.

[0026] Furthermore, it also includes a third expansion valve 12 , and the output end of the solenoid valve 4 is also connected to the second input end of the battery temperature control device 11 through the third expansion valve 12 , and the second output end of the battery temperature control device 11 is connected to the input end of the gas-liquid separator 3 .

[0027] Specifically, the third expansion valve 12 is an electronic expansion valve, the input end of the third expansion valve 12 is connected to the refrigerant pipeline between the solenoid valve 4 and the first expansion valve 5, the output end of the third expansion valve 12 is connected to the refrigerant input end of the battery temperature control device 11 through the refrigerant pipeline, and the refrigerant output end of the battery temperature control device 11 is connected to the input end of the gas-liquid separator 3. By opening the third expansion valve 12, the low-temperature refrigerant after heat exchange in the outdoor heat exchanger 7 can be introduced into the battery temperature control device 11, and the low-temperature refrigerant absorbs heat in the battery temperature control device 11, thereby reducing the temperature of the circulating water in the water circuit where the second water pump 19 is located, thereby cooling the battery.

[0028] Furthermore, it also includes a fourth expansion valve 13 and an evaporator 14 , and the output end of the solenoid valve 4 is also connected to the input end of the gas-liquid separator 3 through the fourth expansion valve 13 and the evaporator 14 in sequence.

[0029] Specifically, the fourth expansion valve 13 is an electronic expansion valve, the input end of the fourth expansion valve 13 is connected to the refrigerant pipeline between the solenoid valve 4 and the first expansion valve 5, the output end of the fourth expansion valve 13 is connected to the input end of the evaporator 14 through the refrigerant pipeline, and the output end of the evaporator 14 is connected to the input end of the gas-liquid separator 3 through the refrigerant pipeline. By opening the fourth expansion valve 13, the low-temperature refrigerant after heat exchange in the outdoor heat exchanger 7 can be introduced into the evaporator 14, and the refrigerant evaporates and absorbs heat in the evaporator 14 to cool the passenger compartment.

[0030] Furthermore, the input end and the output end of the gas-liquid separator 3 are respectively provided with a first temperature and pressure sensor 15 and a second temperature and pressure sensor 16 , and the first output end of the water-cooled condenser 2 is provided with a third temperature and pressure sensor 17 .

[0031] The temperature control system based on compressor self-generated heat provided in this embodiment includes the following modes: self-generated heat mode, passenger compartment heating mode, battery heating mode, heating and dehumidification mode, passenger compartment cooling mode and battery cooling mode, a total of six modes; When in the self-generated heating mode, the solenoid valve 4, the first expansion valve 5 and the first water pump 8 are opened, the second expansion valve 6, the third expansion valve 12 and the fourth expansion valve 13 are closed, and the conductance between the first end and the second end, and the first end and the third end of the three-way proportional valve 9 is adjusted to a set ratio.

[0032] Specifically, in the self-generated heat mode, the refrigerant flow path is: from the gas-liquid separator 3 to the compressor 1, after passing through the compressor 1, entering the water-cooled condenser 2, after passing through the water-cooled condenser 2, and then returning to the gas-liquid separator 3 through the solenoid valve 4 and the first expansion valve 5; the circulating water flow path is: from the water-cooled condenser 2 to the first water pump 8, after passing through the first water pump 8, a part of it returns to the water-cooled condenser 2 through the warm air core 10, and the other part returns to the water-cooled condenser 2 through the battery temperature control device 11. In the self-generated heat mode, the first expansion valve 5 is not fully opened, and the opening of the first expansion valve 5 is adjusted in real time to ensure that as much gaseous refrigerant as possible returns to the gas-liquid separator 3.

[0033] When in the passenger compartment heating mode, the solenoid valve 4, the third expansion valve 12 and the fourth expansion valve 13 are closed, the first expansion valve 5 is fully opened, the second expansion valve 6 and the first water pump 8 are turned on, and the three-way proportional valve 9 is adjusted so that the first end is connected to the second end and the first end is closed to the third end.

[0034] Specifically, in the passenger compartment heating mode, the refrigerant flow path is: from the gas-liquid separator 3 to the compressor 1, after passing through the compressor 1, it enters the outdoor heat exchanger 7 through the second expansion valve 6, after passing through the outdoor heat exchanger 7, it flows back to the gas-liquid separator 3 through the first expansion valve 5; the circulating water flow path is: from the water-cooled condenser 2 to the first water pump 8, after passing through the first water pump 8, it enters the three-way proportional valve 9, after passing through the three-way proportional valve 9, it enters the warm air core 10, and finally flows back to the water-cooled condenser 2. In the passenger compartment heating mode, the first expansion valve 5 is placed in a fully open state, and the flow rate of the first expansion valve 5 and the solenoid valve 4 are kept the same.

[0035] When in the battery heating mode, the solenoid valve 4, the third expansion valve 12 and the fourth expansion valve 13 are closed, the first expansion valve 5 is fully opened, the second expansion valve 6 and the first water pump 8 are turned on, and the three-way proportional valve 9 is adjusted so that the first end is connected to the third end and the first end is closed to the second end.

[0036] Specifically, in the battery heating mode, the refrigerant flow path is: from the gas-liquid separator 3 to the compressor 1, after passing through the compressor 1, it enters the outdoor heat exchanger 7 through the second expansion valve 6, after passing through the outdoor heat exchanger 7, it flows back to the gas-liquid separator 3 through the first expansion valve 5; the circulating water flow path is: from the water-cooled condenser 2 to the first water pump 8, after passing through the first water pump 8, it enters the three-way proportional valve 9, after passing through the three-way proportional valve 9, it enters the battery temperature control device 11, and finally flows back to the water-cooled condenser 2. In the battery heating mode, the first expansion valve 5 is placed in a fully open state, and the flow rate of the first expansion valve 5 and the solenoid valve 4 are kept the same.

[0037] When in the heating and dehumidification mode, the solenoid valve 4, the third expansion valve 12 and the evaporator 14 are opened, and the first expansion valve 5, the second expansion valve 6, the fourth expansion valve 13 and the first water pump 8 are closed.

[0038] Specifically, in the heating and dehumidification mode, the refrigerant flow path is: entering the compressor 1 from the gas-liquid separator 3, passing through the compressor 1 and then entering the evaporator 14 through the solenoid valve 4 and the fourth expansion valve 13 in sequence, and then flowing back to the gas-liquid separator 3 after passing through the evaporator 14; in this mode, the circulating water on the waterway side does not undergo heat exchange.

[0039] When in the passenger compartment cooling mode, the solenoid valve 4 , the first expansion valve 5 , the third expansion valve 12 and the first water pump 8 are closed, and the second expansion valve 6 , the fourth expansion valve 13 and the evaporator 14 are opened.

[0040] Specifically, in the passenger compartment cooling mode, the refrigerant flow path is: entering the compressor 1 from the gas-liquid separator 3, passing through the compressor 1 and then entering the outdoor heat exchanger 7 through the second expansion valve 6, passing through the outdoor heat exchanger 7 and then entering the evaporator 14 through the fourth expansion valve 13, and then flowing back to the gas-liquid separator 3 after passing through the evaporator 14; in this mode, the circulating water on the waterway side does not undergo heat exchange.

[0041] When in the battery cooling mode, the solenoid valve 4 , the first expansion valve 5 , the fourth expansion valve 13 and the first water pump 8 are closed, and the second expansion valve 6 , the third expansion valve 12 and the battery temperature control device 11 are opened.

[0042] Specifically, in the battery cooling mode, the refrigerant flow path is: entering the compressor 1 from the gas-liquid separator 3, passing through the compressor 1 and then entering the outdoor heat exchanger 7 through the second expansion valve 6, passing through the outdoor heat exchanger 7 and then entering the battery temperature control device 11 through the third expansion valve 12, and then flowing back to the gas-liquid separator 3 after passing through the battery temperature control device 11; on the waterway side, circulating water in the pipeline is formed by the battery temperature control device 11, the vehicle battery 18, the second water pump 19 and the powertrain control device to cool the vehicle battery 18.

[0043] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A temperature control system based on compressor self-generated heat, characterized in that: It comprises a compressor (1), a water-cooled condenser (2), a gas-liquid separator (3), a solenoid valve (4), a first expansion valve (5), a second expansion valve (6), an outdoor heat exchanger (7), a first water pump (8), a three-way proportional valve (9), a heater core (10) and a battery temperature control device (11); The output end of the gas-liquid separator (3), the compressor (1) and the first input end of the water-cooled condenser (2) are connected in sequence, and the first output end of the water-cooled condenser (2) is connected to the input end of the gas-liquid separator (3) through the solenoid valve (4) and the first expansion valve (5) in sequence; when the first expansion valve (5) is fully opened, the flow rate is the same as when the solenoid valve (4) is opened; The output end of the second expansion valve (6) is connected to the input end of the outdoor heat exchanger (7), and the second expansion valve (6) and the outdoor heat exchanger (7) are connected in parallel at both ends of the solenoid valve (4); The second output end of the water-cooled condenser (2) is connected to the first end of the three-way proportional valve (9) through the first water pump (8); the second end of the three-way proportional valve (9) is connected to the input end of the heater core (10); the third end of the three-way proportional valve (9) is connected to the first input end of the battery temperature control device (11); the output end of the heater core (10) is connected to the second input end of the water-cooled condenser (2); and the first output end of the battery temperature control device (11) is connected to the second input end of the water-cooled condenser (2).

2. The temperature control system based on compressor self-generated heat according to claim 1, characterized in that: It also includes a third expansion valve (12), the output end of the solenoid valve (4) is also connected to the second input end of the battery temperature regulating device (11) through the third expansion valve (12), and the second output end of the battery temperature regulating device (11) is connected to the input end of the gas-liquid separator (3).

3. The temperature control system based on compressor self-generated heat according to claim 2, characterized in that: It also includes a fourth expansion valve (13) and an evaporator (14), and the output end of the solenoid valve (4) is connected to the input end of the gas-liquid separator (3) through the fourth expansion valve (13) and the evaporator (14) in sequence.

4. The temperature control system based on compressor self-generated heat according to claim 3, characterized in that: The input end and the output end of the gas-liquid separator (3) are respectively provided with a first temperature and pressure sensor (15) and a second temperature and pressure sensor (16), and the first output end of the water-cooled condenser (2) is provided with a third temperature and pressure sensor (17).

5. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a self-generated heating mode. When in the self-generated heating mode, the solenoid valve (4), the first expansion valve (5) and the first water pump (8) are opened, the second expansion valve (6), the third expansion valve (12) and the fourth expansion valve (13) are closed, and the conductance between the first end and the second end, and between the first end and the third end of the three-way proportional valve (9) is adjusted to a set ratio.

6. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a passenger compartment heating mode. When in the passenger compartment heating mode, the solenoid valve (4), the third expansion valve (12) and the fourth expansion valve (13) are closed, the first expansion valve (5) is fully opened, the second expansion valve (6) and the first water pump (8) are turned on, and the three-way proportional valve (9) is adjusted so that the first end is connected to the second end and the first end is closed to the third end.

7. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a battery heating mode. When in the battery heating mode, the solenoid valve (4), the third expansion valve (12) and the fourth expansion valve (13) are closed, the first expansion valve (5) is fully opened, the second expansion valve (6) and the first water pump (8) are turned on, and the three-way proportional valve (9) is adjusted so that the first end is connected to the third end and the first end is closed to the second end.

8. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a heating and dehumidification mode. When in the heating and dehumidification mode, the solenoid valve (4), the third expansion valve (12) and the evaporator (14) are opened, and the first expansion valve (5), the second expansion valve (6), the fourth expansion valve (13) and the first water pump (8) are closed.

9. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a passenger compartment cooling mode. When the passenger compartment cooling mode is in the passenger compartment cooling mode, the solenoid valve (4), the first expansion valve (5), the third expansion valve (12) and the first water pump (8) are closed, and the second expansion valve (6), the fourth expansion valve (13) and the evaporator (14) are opened.

10. The temperature control system based on compressor self-generated heat according to claim 4, characterized in that: The invention comprises a battery cooling mode. When the battery cooling mode is in place, the solenoid valve (4), the first expansion valve (5), the fourth expansion valve (13) and the first water pump (8) are closed, and the second expansion valve (6), the third expansion valve (12) and the battery temperature control device (11) are opened.

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