Heat management system based on hot gas bypass

Abstract

The invention discloses a heat management system based on a hot gas bypass, and belongs to the technical field of heat management of finished new energy automobiles. The system comprises a power battery, an electric compressor, a plate heat exchanger, a water cooling condenser, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a first water pump, a second water pump, a third water pump, a gas-liquid separator, a first seven-way valve, a second seven-way valve, a low-temperature radiator, an HVAC air conditioner assembly, a first three-way proportional valve, a second three-way proportional valve, a motor and an electric controller. According to the system, valves are highly integrated, system pipelines are reduced, flow resistance is reduced, so that the system is compact in structure, the heat management performance can be effectively improved, the cruising ability of the whole vehicle is improved, the whole vehicle is light, and R290 is used as a refrigerant; the energy efficiency of the electric vehicle thermal management system is effectively improved through the hot gas bypass technology, energy consumption can be reduced, and the overall efficiency of the system is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management of new energy vehicles, and in particular relates to a thermal management system based on hot gas bypass. Background Art

[0002] Hot gas bypass, also known as hot gas return or hot gas reverse flow, is designed to optimize system performance and expand system applicability. The main goal of the system is to improve system efficiency, improve system performance, reduce compressor overheating, reduce energy consumption, and provide high-quality thermal energy at low temperatures to expand the applicable temperature range of the heat pump system. The use of hot gas bypass technology ensures that the system can operate efficiently under various working conditions. Summary of the invention

[0003] The purpose of the present invention is to propose a hot gas bypass thermal management system in order to solve the problem of lack of demand for heat pump system optimization.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a hot gas bypass thermal management system, comprising a power battery, an electric compressor, a plate heat exchanger, a water-cooled condenser, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a first water pump, a second water pump, a third water pump, a gas-liquid separator, a first seven-way valve, a second seven-way valve, a low-temperature radiator, an HVAC air conditioning assembly, a first three-way proportional valve, a second three-way proportional valve, a motor and an electronic control, and the refrigerant circulation circuit is connected to the third electronic expansion valve through a pipeline by the first circuit at the outlet of the electric compressor, and the third electronic expansion valve is connected to the inlet of the electric compressor through a pipeline; the second circuit at the outlet of the electric compressor is connected to the third electronic expansion valve through a pipeline, the third electronic expansion valve is connected to the water-cooled condenser through a pipeline, the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the gas-liquid separator through a pipeline; the gas-liquid separator is connected to the inlet of the electric compressor through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser is connected to the warm air core of the first-circuit HVAC air-conditioning assembly and the first seven-way valve of the second circuit through pipelines respectively, the warm air core of the first-circuit HVAC air-conditioning assembly is connected to the second seven-way valve through pipelines, the second seven-way valve is connected to the second water pump through pipelines, the second water pump is connected to the water-cooled condenser through pipelines, the first seven-way valve of the second circuit is connected to the low-temperature radiator through pipelines, the low-temperature radiator is connected to the motor and the electronic control through pipelines, the electronic control and the motor are connected to the second seven-way valve through pipelines, the second seven-way valve is connected to the second water pump through pipelines, and the second water pump is connected to the water-cooled condenser through pipelines; And the air conditioner and the battery coolant circuit: the coolant in the plate heat exchanger is connected to the first three-way proportional valve through a pipeline, the first three-way proportional valve is respectively connected to the cold air core of the first circuit HVAC air conditioning assembly and the first seven-way valve of the second circuit through pipelines, the cold air core of the first circuit HVAC air conditioning assembly is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger through a pipeline; the first seven-way valve of the second circuit is respectively connected to the third water pump of the third circuit and the second three-way proportional valve of the fourth circuit through pipelines, the third water pump of the third circuit is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve through a pipeline, the second three-way proportional valve is connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger; the second three-way proportional valve of the fourth circuit is connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger.

[0005] As a further description of the above technical solution: The electric compressor outlet main pipeline is provided with a first temperature and pressure sensor, the pipeline between the water-cooled condenser and the first electronic expansion valve is also provided with a second temperature and pressure sensor, the plate heat exchanger outlet main pipeline is provided with a third temperature and pressure sensor, and the pipeline between the third electronic expansion valve and the gas-liquid separator is also provided with a fourth temperature and pressure sensor.

[0006] As a further description of the above technical solution: A first temperature sensor is arranged on the pipeline between the plate heat exchanger and the first three-way proportional valve, a second temperature sensor is also arranged on the pipeline between the water-cooled condenser and the first seven-way valve, a third temperature sensor is also arranged on the pipeline between the warm air core of the HVAC air-conditioning assembly and the first seven-way valve, a fourth temperature sensor is also arranged on the pipeline between the cold air core of the HVAC air-conditioning assembly and the first seven-way valve, a fifth temperature sensor is also arranged on the pipeline between the third water pump and the battery, a sixth temperature sensor is also arranged on the pipeline between the battery and the second three-way proportional valve, a seventh temperature sensor is also arranged on the pipeline between the low-temperature radiator and the first seven-way valve, an eighth temperature sensor is also arranged on the pipeline between the low-temperature radiator and the motor electronic control, and a ninth temperature sensor is also arranged on the pipeline between the battery and the second seven-way valve.

[0007] As a further description of the above technical solution: The refrigerant circulation circuit is extended by a first circuit at the outlet of the electric compressor connected to a second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the inlet of the electric compressor through a pipeline; the second circuit at the outlet of the electric compressor is connected to a water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to a plate heat exchanger through a pipeline, and the plate heat exchanger is connected to a gas-liquid separator through a pipeline; the gas-liquid separator is connected to the inlet of the electric compressor through a pipeline; The refrigerant circulation circuit is expanded by connecting the first circuit of the outlet of the electric compressor to the third electronic expansion valve through a pipeline, and the third electronic expansion valve is connected to the inlet of the electric compressor through a pipeline; the second circuit of the outlet of the electric compressor is connected to the second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the inlet of the electric compressor through a pipeline; The refrigerant circulation circuit is expanded three by connecting the first circuit of the electric compressor outlet to the second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the electric compressor inlet through a pipeline; the second circuit of the electric compressor outlet is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the electric compressor inlet through a pipeline.

[0008] As a further description of the above technical solution: The second coolant circulation loop is connected to the third electronic expansion valve through a pipeline by the first loop of the electric compressor outlet, and the third electronic expansion valve is connected to the electric compressor inlet through a pipeline; the second loop of the electric compressor outlet is connected to the third electronic expansion valve through a pipeline, and the third electronic expansion valve is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the gas-liquid separator through a pipeline; the gas-liquid separator is connected to the electric compressor inlet through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser is connected to the warm air core of the first-circuit HVAC air-conditioning assembly and the first seven-way valve of the second circuit through pipelines respectively, the warm air core of the first-circuit HVAC air-conditioning assembly is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump through a pipeline, the second water pump is connected to the water-cooled condenser through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator through a pipeline, the low-temperature radiator is connected to the motor and the electronic control through a pipeline, the electronic control and the motor are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump through a pipeline, and the second water pump is connected to the water-cooled condenser through a pipeline; And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger is connected to the first three-way proportional valve through a pipeline, the first three-way proportional valve is respectively connected to the cold air core of the first circuit HVAC air conditioning assembly and the second circuit seven-way valve through a pipeline, the cold air core of the first circuit HVAC air conditioning assembly is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger through a pipeline; the second circuit seven-way valve is respectively connected to the third circuit third water pump and the fourth circuit second three-way proportional valve through a pipeline, the third circuit third water pump is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve through a pipeline, the second three-way proportional valve is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger; the fourth circuit second three-way proportional valve is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger.

[0009] As a further description of the above technical solution: Based on the expansion of the coolant circuit 2, the refrigerant circulation circuit 1 is expanded by connecting the first circuit of the electric compressor outlet to the second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the electric compressor inlet through a pipeline; the second circuit of the electric compressor outlet is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the gas-liquid separator through a pipeline; the gas-liquid separator is connected to the electric compressor inlet through a pipeline; The refrigerant circulation circuit is expanded by connecting the first circuit of the outlet of the electric compressor to the third electronic expansion valve through a pipeline, and the third electronic expansion valve is connected to the inlet of the electric compressor through a pipeline; the second circuit of the outlet of the electric compressor is connected to the second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the inlet of the electric compressor through a pipeline; The refrigerant circulation circuit is expanded three by connecting the first circuit of the electric compressor outlet to the second electronic expansion valve through a pipeline, and the second electronic expansion valve is connected to the electric compressor inlet through a pipeline; the second circuit of the electric compressor outlet is connected to the water-cooled condenser through a pipeline, and the water-cooled condenser is connected to the liquid storage tank through a pipeline, and the liquid storage tank is connected to the first electronic expansion valve through a pipeline, and the first electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the electric compressor inlet through a pipeline.

[0010] As a further description of the above technical solution: And based on a hot gas bypass thermal management system, a heat management system based on air supplement and enthalpy increase is expanded, and the refrigerant circulation loop is connected to the water-cooled condenser through a pipeline from the outlet of the electric compressor, the first loop of the outlet of the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, the first electronic expansion valve is connected to the first inlet of the plate heat exchanger through a pipeline, and the first outlet of the plate heat exchanger is connected to the air supplement port of the electric compressor through a pipeline; the second loop of the outlet of the water-cooled condenser is connected to the second inlet of the plate heat exchanger through a pipeline, the second outlet of the plate heat exchanger is connected to the second electronic expansion valve through a pipeline, the second electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the gas-liquid separator through a pipeline; the gas-liquid separator is connected to the inlet of the electric compressor through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser is connected to the warm air core of the first-circuit HVAC air-conditioning assembly and the first seven-way valve of the second circuit through pipelines respectively, the warm air core of the first-circuit HVAC air-conditioning assembly is connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the second water pump through a pipeline, the second water pump is connected to the water-cooled condenser through a pipeline, the first seven-way valve of the second circuit is connected to the low-temperature radiator through a pipeline, the low-temperature radiator is connected to the motor and the electronic control through a pipeline, the electronic control and the motor are connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the second water pump through a pipeline, and the second water pump is connected to the water-cooled condenser through a pipeline And the air conditioner and the battery coolant circuit: the coolant in the plate heat exchanger is connected to the first three-way proportional valve through a pipeline, the first three-way proportional valve is respectively connected to the cold air core of the first circuit HVAC air conditioning assembly and the first seven-way valve of the second circuit through pipelines, the cold air core of the first circuit HVAC air conditioning assembly is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger through a pipeline; the first seven-way valve of the second circuit is respectively connected to the third water pump of the third circuit and the second three-way proportional valve of the fourth circuit through pipelines, the third water pump of the third circuit is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve through a pipeline, the second three-way proportional valve is connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger; the second three-way proportional valve of the fourth circuit is connected to the second seven-way valve through a pipeline, the second seven-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger.

[0011] As a further description of the above technical solution: At the same time, another refrigerant circulation loop with air replenishment and enthalpy increase technology is expanded, and the refrigerant circulation loop is connected to the water-cooled condenser through a pipeline from the electric compressor outlet, the water-cooled condenser outlet is connected to the liquid storage tank through a pipeline, the first circuit of the liquid storage tank is connected to the first electronic expansion valve through a pipeline, the first electronic expansion valve is connected to the first inlet of the plate heat exchanger through a pipeline, and the first outlet of the plate heat exchanger is connected to the air replenishment port of the electric compressor through a pipeline; the second circuit of the water-cooled condenser outlet is connected to the second inlet of the plate heat exchanger through a pipeline, the second outlet of the plate heat exchanger is connected to the second electronic expansion valve through a pipeline, the second electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the inlet of the electric compressor through a pipeline.

[0012] As a further description of the above technical solution: And a second coolant circulation loop is extended, and the refrigerant circulation loop is connected to the water-cooled condenser through a pipeline from the outlet of the electric compressor, the first circuit of the outlet of the water-cooled condenser is connected to the first electronic expansion valve through a pipeline, the first electronic expansion valve is connected to the first inlet of the plate heat exchanger through a pipeline, and the first outlet of the plate heat exchanger is connected to the air supply port of the electric compressor through a pipeline; the second circuit of the outlet of the water-cooled condenser is connected to the second inlet of the plate heat exchanger through a pipeline, the second outlet of the plate heat exchanger is connected to the second electronic expansion valve through a pipeline, the second electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the gas-liquid separator through a pipeline; the gas-liquid separator is connected to the inlet of the electric compressor through a pipeline; Motor coolant circuit: the coolant in the water-cooled condenser is connected to the heater core of the first-circuit HVAC air-conditioning assembly and the second-circuit seven-way valve through pipelines, respectively; the heater core of the first-circuit HVAC air-conditioning assembly is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump through a pipeline, the second water pump is connected to the water-cooled condenser through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator through a pipeline, the low-temperature radiator is connected to the motor and the electronic control through a pipeline, the electronic control and the motor are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump through a pipeline, and the second water pump is connected to the water-cooled condenser through a pipeline; And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger is connected to the first three-way proportional valve through a pipeline, the first three-way proportional valve is respectively connected to the cold air core of the first circuit HVAC air conditioning assembly and the second circuit seven-way valve through a pipeline, the cold air core of the first circuit HVAC air conditioning assembly is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger through a pipeline; the second circuit seven-way valve is respectively connected to the third circuit third water pump and the fourth circuit second three-way proportional valve through a pipeline, the third circuit third water pump is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve through a pipeline, the second three-way proportional valve is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger; the fourth circuit second three-way proportional valve is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump through a pipeline, and the first water pump is connected to the plate heat exchanger.

[0013] As a further description of the above technical solution: The refrigerant circulation circuits can be expanded to multiple types of refrigerant circulation circuits with air replenishment and enthalpy increase technology, and the refrigerant circulation circuit is connected to the water-cooled condenser through a pipeline at the outlet of the electric compressor, the outlet of the water-cooled condenser is connected to the liquid storage tank through a pipeline, the first circuit of the liquid storage tank is connected to the first electronic expansion valve through a pipeline, the first electronic expansion valve is connected to the first inlet of the plate heat exchanger through a pipeline, and the first outlet of the plate heat exchanger is connected to the air replenishment port of the electric compressor through a pipeline; the second circuit of the water-cooled condenser outlet is connected to the second inlet of the plate heat exchanger through a pipeline, the second outlet of the plate heat exchanger is connected to the second electronic expansion valve through a pipeline, the second electronic expansion valve is connected to the plate heat exchanger through a pipeline, and the plate heat exchanger is connected to the inlet of the electric compressor through a pipeline.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, the system integrates valve components to a high degree, reduces system piping, reduces flow resistance, and makes the system structure compact, which can effectively improve thermal management performance, is beneficial to improving the endurance of the entire vehicle, and realizes lightweighting of the entire vehicle.

[0015] 2. In the present invention, the advantage of R290 as a refrigerant is utilized to effectively improve the energy efficiency of the electric vehicle thermal management system through hot gas bypass technology, which can reduce energy consumption and improve the overall efficiency of the system.

[0016] 3. In the present invention, R290 is an environmentally friendly refrigerant. Using it can reduce the impact of the system on the environment, reduce the negative impact on global warming and ozone layer destruction, and meet environmental protection requirements.

[0017] 4. In the present invention, the hot gas bypass technology can help the system maintain a stable operating state under different working conditions, improve the stability and reliability of the system, and ensure that the thermal management system can work normally under various conditions.

[0018] 5. In the present invention, the air-injection heat-increasing system is a thermal management system composed of an air-injection heat-increasing compressor, an air-injection heat-increasing module, and a high-efficiency cooler. The main goal of the system is to improve energy utilization, reduce energy consumption, and improve refrigeration effects. The specific purpose is to solve the problem of low-temperature heating, so that the system can perform well in a wider temperature range. The design of the hot gas bypass and air-injection heat-increasing thermal management system takes into account various requirements of vehicle thermal management. Through the indirect heat exchange method, the cooling and heating requirements of the passenger compartment, battery, and motor under various working conditions can be achieved. By accurately controlling the heat flow and compression process in the system, the cooling and heating requirements of the passenger compartment, battery, and motor can be met. The hot gas bypass and air-supplement and reheat-increasing thermal management system can ensure that the system can maintain a stable working state under various working conditions and improve the overall performance and efficiency. The hot gas bypass and air-supplement and reheat-increasing thermal management system described in this article can adopt a variety of refrigerants such as R134a, R1234yf and R290, etc., and can perform well under extremely harsh working conditions (such as extremely low temperatures) or a wide range of common working conditions. In general, the technical background of the hot gas bypass and air-supplement and reheat-increasing thermal management system is based on the needs of heat pump system optimization, aiming to improve system efficiency, expand system applicability and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a flow path of a hot gas bypass thermal management system proposed by the present invention; Figure 2 A hot gas bypass schematic diagram based on a hot gas bypass thermal management system proposed by the present invention; Figure 3 A schematic diagram of a first heating mode based on a hot gas bypass thermal management system proposed by the present invention; Figure 4A schematic diagram of a second heating mode based on a hot gas bypass thermal management system proposed by the present invention; Figure 5 A schematic diagram of a waste heat recovery mode based on a hot gas bypass thermal management system proposed by the present invention; Figure 6 A schematic diagram of a mixed cooling mode based on a hot gas bypass thermal management system proposed by the present invention; Figure 7 A schematic diagram of a first passenger compartment single cooling mode based on a hot gas bypass thermal management system proposed by the present invention; Figure 8 A schematic diagram of a first passenger compartment single cooling mode based on a hot gas bypass thermal management system proposed by the present invention; Fig. 9 A schematic diagram of a battery cooling mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.10 A schematic diagram of a first dehumidification mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.11 A schematic diagram of a second dehumidification mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.12 A schematic diagram of a third dehumidification mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.13 A schematic diagram of a fourth dehumidification mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.14 A schematic diagram of a deicing mode based on a hot gas bypass thermal management system proposed by the present invention; Fig.15 A schematic diagram of valve port connection in five working modes of a first valve component based on a hot gas bypass thermal management system proposed by the present invention; Fig.16 A schematic diagram of a preferred embodiment 4 of a hot gas bypass thermal management system proposed by the present invention; Fig.17 A schematic diagram of a preferred embodiment 5 of a hot gas bypass thermal management system proposed by the present invention; Fig.18 A schematic diagram of a preferred embodiment 6 of a hot gas bypass thermal management system proposed by the present invention; Fig.19 A schematic diagram of a preferred embodiment 7 of a hot gas bypass thermal management system proposed by the present invention; Fig. 20 A schematic diagram of a preferred embodiment 8 of a hot gas bypass thermal management system proposed by the present invention; Fig.21A schematic diagram of a preferred embodiment 9 of a hot gas bypass thermal management system proposed by the present invention; Fig. 22 A schematic diagram of a preferred embodiment 10 of a hot gas bypass thermal management system proposed by the present invention; Fig.23 A schematic diagram of a preferred embodiment 11 of a hot gas bypass thermal management system proposed by the present invention; Fig.24 A schematic diagram of a preferred embodiment 12 of a hot gas bypass thermal management system proposed by the present invention.

[0020] Legend: 1. First seven-way valve; 2. Cold air core; 3. Third water pump; 4. Second three-way proportional valve; 5. Second seven-way valve; 6. First three-way proportional valve; 7. Warm air core; 8. Water-cooled condenser; 9. Second electronic expansion valve; 10. Third electronic expansion valve; 11. Electric compressor; 12. Gas-liquid separator; 13. Plate heat exchanger; 14. Electronic control; 15. Low-temperature radiator; 16. First electronic expansion valve; 17. Second water pump; 18. First water pump; 19. Power battery; 20. HVAC air conditioning assembly; 21. Motor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please refer to Figure 1-24. The present invention provides a technical solution: a hot gas bypass thermal management system, including a power battery 19, an electric compressor 11, a plate heat exchanger 13, a water-cooled condenser 8, a first electronic expansion valve 16, a second electronic expansion valve 9, a third electronic expansion valve 10, a first water pump 18, a second water pump 17, a third water pump 3, a gas-liquid separator 12, a first seven-way valve 1, a second seven-way valve 5, a low-temperature radiator 15, an HVAC air conditioning assembly 20, a first three-way proportional valve 6, a second three-way proportional valve 4, a motor 21 and an electronic control 14, and the refrigerant circulation circuit is composed of an electric compressor The first circuit at the outlet of the compressor 11 is connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit at the outlet of the electric compressor 11 is connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the water-cooled condenser 8 through a pipeline, and the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, and the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser 8 is connected to the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 and the first seven-way valve 1 of the second circuit through pipelines respectively, the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 is connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the second water pump 17 through a pipeline, the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline, the first seven-way valve 1 of the second circuit is connected to the low-temperature radiator 15 through a pipeline, the low-temperature radiator 15 is connected to the motor 21 and the electronic control 14 through a pipeline, the electronic control 14 and the motor 21 are connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the second water pump 17 through a pipeline, and the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline; And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger 13 is connected to the first three-way proportional valve 6 through a pipeline, the first three-way proportional valve 6 is connected to the cold air core 2 of the first circuit HVAC air conditioning assembly 20 through pipelines and the first seven-way valve 1 of the second circuit at the same time, the cold air core 2 of the first circuit HVAC air conditioning assembly 20 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13 through a pipeline; the first seven-way valve 1 of the second circuit is connected to the third water pump 3 of the third circuit and the second three-way proportional valve 4 of the fourth circuit through pipelines, the third water pump 3 of the third circuit is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve 4 through a pipeline, and the second three-way proportional valve 4 is connected to the second seven-way proportional valve 1 through a pipeline The second seven-way valve 5 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13; the second three-way proportional valve 4 of the fourth loop is connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13, the main outlet pipeline of the electric compressor 11 is provided with a first temperature and pressure sensor PT1, the pipeline between the water-cooled condenser 8 and the first electronic expansion valve of EXV is also provided with a second temperature and pressure sensor PT2, the main outlet pipeline of the plate heat exchanger 13 is provided with a third temperature and pressure sensor PT3, the pipeline between the third electronic expansion valve of EXV and the ACCU gas-liquid separator 12 is also provided with a fourth temperature and pressure sensor PT4, and the plate heat exchanger 11 is provided with a third temperature and pressure sensor PT3. A first temperature sensor T1 is provided on the pipeline between the heat exchanger 13 and the first three-way proportional valve 6, a second temperature sensor T2 is also provided on the pipeline between the water-cooled condenser 8 and the first seven-way valve 1, a third temperature sensor T3 is also provided on the pipeline between the warm air core 7 of the HVAC air-conditioning assembly 20 and the first seven-way valve 1, a fourth temperature sensor T4 is also provided on the pipeline between the cold air core 2 of the HVAC air-conditioning assembly 20 and the first seven-way valve 1, a fifth temperature sensor T5 is also provided on the pipeline between the third water pump 3 and the battery, a sixth temperature sensor T6 is also provided on the pipeline between the battery and the second three-way proportional valve 4, a seventh temperature sensor T7 is also provided on the pipeline between the low-temperature radiator 15 and the first seven-way valve 1, and a low-temperature heat sink 15 is provided with a seventh temperature sensor T8. An eighth temperature sensor T8 is also provided on the pipeline between the device 15 and the motor 21 electronic control 14, and a ninth temperature sensor T9 is also provided on the pipeline between the battery and the second seven-way valve 5, and the refrigerant circulation circuit is extended by a first circuit at the outlet of the electric compressor 11 connected to the second electronic expansion valve 9 through a pipeline, and the second electronic expansion valve 9 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit at the outlet of the electric compressor 11 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; And the refrigerant circulation circuit is expanded by the first circuit of the outlet of the electric compressor 11 connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit of the outlet of the electric compressor 11 is connected to the second electronic expansion valve 9 through a pipeline, the second electronic expansion valve 9 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through a pipeline; The refrigerant circulation circuit is expanded three, and the first circuit of the outlet of the electric compressor 11 is connected to the second electronic expansion valve 9 through a pipeline, and the second electronic expansion valve 9 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit of the outlet of the electric compressor 11 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through a pipeline, and the coolant circulation circuit 2 is connected to the electric compressor 11 The first circuit of the outlet is connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit of the outlet of the electric compressor 11 is connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the water-cooled condenser 8 through a pipeline, and the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, and the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser 8 is connected to the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 and the first seven-way valve 1 of the second circuit through pipelines respectively, the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump 17 through a pipeline, the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator 15 through a pipeline, the low-temperature radiator 15 is connected to the motor 21 and the electronic control 14 through a pipeline, the electronic control 14 and the motor 21 are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump 17 through a pipeline, and the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline; And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger 13 is connected to the first three-way proportional valve 6 through a pipeline, the first three-way proportional valve 6 is connected to the cold air core 2 of the first circuit HVAC air conditioning assembly 20 and the second circuit seven-way valve through pipelines, the cold air core 2 of the first circuit HVAC air conditioning assembly 20 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13 through a pipeline; the second circuit seven-way valve is connected to the third circuit third water pump 3 and the fourth circuit second three-way proportional valve 4 through pipelines, the third circuit third water pump 3 is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve 4 through a pipeline, the second three-way proportional valve 4 is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump 18 through a pipeline, the first water pump 18 connected to the plate heat exchanger 13; the second three-way proportional valve 4 of the fourth loop is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump 18 through a pipeline, the first water pump 18 is connected to the plate heat exchanger 13, and based on the expansion of the coolant loop 2, and the refrigerant circulation loop is expanded, the first loop from the outlet of the electric compressor 11 is connected to the second electronic expansion valve 9 through a pipeline, and the second electronic expansion valve 9 is connected to the inlet of the electric compressor 11 through a pipeline; the second loop at the outlet of the electric compressor 11 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; And the refrigerant circulation circuit is expanded by the first circuit of the outlet of the electric compressor 11 connected to the third electronic expansion valve 10 through a pipeline, and the third electronic expansion valve 10 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit of the outlet of the electric compressor 11 is connected to the second electronic expansion valve 9 through a pipeline, the second electronic expansion valve 9 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through a pipeline; And the refrigerant circulation circuit is expanded three. The first circuit of the outlet of the electric compressor 11 is connected to the second electronic expansion valve 9 through a pipeline, and the second electronic expansion valve 9 is connected to the inlet of the electric compressor 11 through a pipeline; the second circuit of the outlet of the electric compressor 11 is connected to the water-cooled condenser 8 through a pipeline, the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through a pipeline.

[0023] In a specific implementation manner, the electric compressor 11 flows a part of the compressed high-temperature and high-pressure refrigerant into the third electronic expansion valve 10 through a pipeline, and then the third electronic expansion valve 10 throttles the high-temperature and high-pressure refrigerant and flows it to the gas-liquid separator 12 through a pipeline, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature low-pressure gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the second electronic expansion valve 9 through a pipeline, and then is discharged into the water-cooled condenser 8 by the second electronic expansion valve 9, and the water-cooled condenser 8 is pumped into the water by the second water pump 17. The antifreeze liquid is used to dissipate heat, and the refrigerant that has dissipated heat is throttled through the first electronic expansion valve 16 through the pipeline. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates the antifreeze liquid circulating inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid, and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0024] And based on a hot gas bypass thermal management system, a heat management system based on air replenishment and enthalpy increase is expanded, and the refrigerant circulation loop is connected to the water-cooled condenser 8 through a pipeline from the outlet of the electric compressor 11, the first loop of the outlet of the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the first inlet of the plate heat exchanger 13 through a pipeline, and the first outlet of the plate heat exchanger 13 is connected to the air replenishment port of the electric compressor 11 through a pipeline; the second loop of the outlet of the water-cooled condenser 8 is connected to the second inlet of the plate heat exchanger 13 through a pipeline, the second outlet of the plate heat exchanger 13 is connected to the second electronic expansion valve 9 through a pipeline, the second electronic expansion valve 9 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; And the motor coolant circuit: the coolant in the water-cooled condenser 8 is connected to the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 and the first seven-way valve 1 of the second circuit through pipelines, respectively; the warm air core 7 of the first-circuit HVAC air-conditioning assembly 20 is connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the second water pump 17 through a pipeline, the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline, the first seven-way valve 1 of the second circuit is connected to the low-temperature radiator 15 through a pipeline, the low-temperature radiator 15 is connected to the motor 21 and the electronic control 14 through a pipeline, the electronic control 14 and the motor 21 are connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the second water pump 17 through a pipeline, and the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger 13 is connected to the first three-way proportional valve 6 through a pipeline, the first three-way proportional valve 6 is connected to the cold air core 2 of the first circuit HVAC air conditioning assembly 20 through pipelines and the first seven-way valve 1 of the second circuit at the same time, the cold air core 2 of the first circuit HVAC air conditioning assembly 20 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13 through a pipeline; the first seven-way valve 1 of the second circuit is connected to the third water pump 3 of the third circuit through pipelines and the second three-way proportional valve 4 of the fourth circuit at the same time, the third water pump 3 of the third circuit is connected to the battery through a pipeline, and the battery is connected to the battery through a pipeline The second three-way proportional valve 4 is connected to the second seven-way proportional valve 5 through a pipeline, the second seven-way valve 5 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13; the second three-way proportional valve 4 of the fourth loop is connected to the second seven-way valve 5 through a pipeline, the second seven-way valve 5 is connected to the first water pump 18 through a pipeline, the first water pump 18 is connected to the plate heat exchanger 13, and at the same time, another refrigerant circulation loop with air replenishment and enthalpy increase technology is expanded, and the refrigerant circulation loop is connected to the water-cooled condenser 8 through a pipeline from the outlet of the electric compressor 11, and the outlet of the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, and the first circuit of the liquid storage tank is connected through The pipeline is connected to the first electronic expansion valve 16, the first electronic expansion valve 16 is connected to the first inlet of the plate heat exchanger 13 through the pipeline, and the first outlet of the plate heat exchanger 13 is connected to the air supply port of the electric compressor 11 through the pipeline; the second circuit of the outlet of the water-cooled condenser 8 is connected to the second inlet of the plate heat exchanger 13 through the pipeline, the second outlet of the plate heat exchanger 13 is connected to the second electronic expansion valve 9 through the pipeline, the second electronic expansion valve 9 is connected to the plate heat exchanger 13 through the pipeline, the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through the pipeline, and the coolant circulation loop 2 is extended, and the refrigerant circulation loop is connected from the outlet of the electric compressor 11 to the water-cooled condenser through the pipeline 8 is connected, the first circuit of the outlet of the water-cooled condenser 8 is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the first inlet of the plate heat exchanger 13 through a pipeline, and the first outlet of the plate heat exchanger 13 is connected to the air supply port of the electric compressor 11 through a pipeline; the second circuit of the outlet of the water-cooled condenser 8 is connected to the second inlet of the plate heat exchanger 13 through a pipeline, the second outlet of the plate heat exchanger 13 is connected to the second electronic expansion valve 9 through a pipeline, the second electronic expansion valve 9 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the gas-liquid separator 12 through a pipeline; the gas-liquid separator 12 is connected to the inlet of the electric compressor 11 through a pipeline; Motor coolant circuit: the coolant in the water-cooled condenser 8 is connected to the heater core 7 of the first-circuit HVAC air-conditioning assembly 20 and the second-circuit seven-way valve through pipelines, respectively; the heater core 7 of the first-circuit HVAC air-conditioning assembly 20 is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump 17 through a pipeline, the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator 15 through a pipeline, the low-temperature radiator 15 is connected to the motor 21 and the electronic control 14 through a pipeline, the electronic control 14 and the motor 21 are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump 17 through a pipeline, and the second water pump 17 is connected to the water-cooled condenser 8 through a pipeline; And the air conditioning and battery coolant circuit: the coolant in the plate heat exchanger 13 is connected to the first three-way proportional valve 6 through a pipeline, the first three-way proportional valve 6 is connected to the cold air core 2 of the first circuit HVAC air conditioning assembly 20 and the second circuit seven-way valve through pipelines, the cold air core 2 of the first circuit HVAC air conditioning assembly 20 is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13 through a pipeline; the second circuit seven-way valve is connected to the third circuit third water pump 3 and the fourth circuit second three-way proportional valve 4 through pipelines, respectively, the third circuit third water pump 3 is connected to the battery through a pipeline, the battery is connected to the second three-way proportional valve 4 through a pipeline, the second three-way proportional valve 4 is connected to the six-way valve through a pipeline, the six-way valve is connected to the first water pump 18 through a pipeline, and the first water pump 18 is connected to the plate heat exchanger 13; the fourth circuit second three-way proportional valve 4 is connected to the six-way valve through a pipeline The six-way valve is connected to the first water pump 18 through a pipeline, the first water pump 18 is connected to the plate heat exchanger 13, and at the same time, a variety of refrigerant circulation circuits with air replenishment and enthalpy increase technology can be expanded, and the refrigerant circulation circuit is connected to the water-cooled condenser 8 through a pipeline from the outlet of the electric compressor 11, the outlet of the water-cooled condenser 8 is connected to the liquid storage tank through a pipeline, the first circuit of the liquid storage tank is connected to the first electronic expansion valve 16 through a pipeline, the first electronic expansion valve 16 is connected to the first inlet of the plate heat exchanger 13 through a pipeline, and the first outlet of the plate heat exchanger 13 is connected to the air replenishment port of the electric compressor 11 through a pipeline; the second circuit of the outlet of the water-cooled condenser 8 is connected to the second inlet of the plate heat exchanger 13 through a pipeline, the second outlet of the plate heat exchanger 13 is connected to the second electronic expansion valve 9 through a pipeline, the second electronic expansion valve 9 is connected to the plate heat exchanger 13 through a pipeline, and the plate heat exchanger 13 is connected to the inlet of the electric compressor 11 through a pipeline.

[0025] In a specific implementation manner, the electric compressor 11 with an air supply port discharges the compressed high-temperature and high-pressure gaseous refrigerant into the water-cooled condenser 8 through a pipeline. The water-cooled condenser 8 dissipates heat through the coolant pumped in by the second water pump 17. A part of the cooled high-pressure medium-temperature liquid refrigerant passes through the second electronic expansion valve 9 for throttling. The throttled medium-pressure and low-temperature refrigerant enters the plate heat exchanger 13 and exchanges heat with the remaining other part of the main high-pressure medium-temperature refrigerant to evaporate into a medium-pressure gaseous refrigerant, which flows to the air supply port of the electric compressor 11 through a pipeline for compression. At the same time, the main high-pressure supercooled refrigerant that is further cooled flows to the third electronic expansion valve through a pipeline. The third electronic expansion valve 10 directs the throttled low-temperature and low-pressure refrigerant to the plate heat exchanger 13, and the plate heat exchanger 13 absorbs heat and evaporates by passing the coolant flowing through the inside of the plate heat exchanger 13. The plate heat exchanger 13 directs the evaporated refrigerant medium to the gas-liquid separator 12 through a pipeline, and the gas-liquid separator 12 separates the incompletely evaporated low-temperature and low-pressure refrigerant into gas and liquid. The gaseous refrigerant then flows into the air intake port of the electric compressor 11 through a pipeline for preliminary compression, and then is mixed with the refrigerant in the air supply circuit inside the electric compressor 11 for further compression and then discharged into the water-cooled condenser 8, forming a complete refrigerant medium circuit.

[0026] Preferred embodiment 1, when the system is in the extremely low temperature hot air bypass mode with the motor 21 dissipating heat, the passenger compartment heating, and the power battery 19 self-circulating, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high temperature and high pressure refrigerant medium into the third electronic expansion valve 10 through the pipeline, and then the third electronic expansion valve 10 flows the high temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high temperature and low temperature gaseous refrigerants to form a medium temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the second electronic expansion valve 9 through the pipeline, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. 8. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0027] Air conditioning box circuit: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the warm air core 7 of the HVAC air conditioning assembly 20 through the pipeline. The HVAC blower blows cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through the pipeline, and then flows to the second water pump 17 through the fourth interface of the second seven-way valve 5 through the pipeline. The second water pump 17 then pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete coolant circuit for heating the passenger compartment.

[0028] Heat dissipation circuit of motor 21 and battery: the coolant after heat exchange between motor 21 and electronic control 14 flows to the sixth interface of second seven-way valve 5 through pipeline, and flows to the inlet of first water pump 18 through pipeline from the fifth interface of second seven-way valve 5; the first water pump 18 pumps the coolant after heat exchange between electronic control 14 and motor 21 into the third interface of first seven-way valve 1, and flows to low-temperature radiator 15 from the second interface of first seven-way valve 1; the outside air is blown through low-temperature radiator 15 by condensing fan, and low-temperature radiator 15 dissipates heat to the outside environment; the coolant after heat dissipation flows from low-temperature radiator 15 to electronic control 14 of motor 21, forming a complete circuit for heat dissipation of motor 21 and electronic control 14; the coolant of battery is pumped into the battery pack by third water pump 3 for heat exchange, and the coolant after heat exchange flows to second three-way proportional valve 4 through pipeline, and the second three-way proportional valve 4 distributes the flow to third water pump 3 according to different requirements of power battery 19, forming a complete coolant circuit for self-circulation heat dissipation of motor 21 and battery.

[0029] Preferred embodiment 2, when the system is in the extremely low temperature hot air bypass mode where the motor 21 dissipates heat, there is no demand in the passenger compartment, and the power battery 19 is heating, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high temperature and high pressure refrigerant medium into the third electronic expansion valve 10 through the pipeline, and then the third electronic expansion valve 10 flows the high temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high temperature and low temperature gaseous refrigerants to form a medium temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. 8. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0030] Battery heating circuit: The water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the fifth interface of the first seven-way valve 1 through the pipeline, and flows from the seventh interface of the first seven-way valve 1 to the third water pump 3 through the pipeline, and then the third water pump 3 pumps the heated coolant into the battery pack for heat exchange, and the coolant after heat exchange flows from the battery pack to the second three-way proportional valve 4 through the pipeline, and the second three-way proportional valve 4 distributes the flow according to the different needs of the power battery 19 and flows to the seventh interface of the third water pump 3 of the first circuit and the second seven-way valve 5 of the second circuit at the same time, the coolant after heat exchange in the first circuit flows to the third water pump 3, is mixed with the heated coolant, and then is pumped into the battery pack, and flows from the fourth interface of the second seven-way valve 5 of the second circuit to the second water pump 17, and then the second water pump 17 pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete battery heating coolant circuit.

[0031] Motor 21 heat dissipation circuit: the coolant after heat exchange between the motor 21 and the electronic control 14 flows through the pipeline to the sixth interface of the second seven-way valve 5, and flows from the fifth interface of the second seven-way valve 5 to the inlet of the first water pump 18 through the pipeline. The first water pump 18 pumps the coolant after heat exchange between the electronic control 14 and the motor 21 into the third interface of the first seven-way valve 1, and flows from the second interface of the first seven-way valve 1 to the low-temperature radiator 15. The outside air is blown through the low-temperature radiator 15 by the condensing fan, and the low-temperature radiator 15 dissipates heat to the external environment. The coolant after heat dissipation flows from the low-temperature radiator 15 to the motor 21 electronic control 14, forming a complete circuit for heat dissipation of the motor 21 and the electronic control 14.

[0032] Preferred embodiment 3, when the system is in the extremely low temperature hot air bypass mode of the motor 21 dissipating heat, the passenger compartment heating, and the power battery 19 heating, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high temperature and high pressure refrigerant medium into the third electronic expansion valve 10 through the pipeline, and then the third electronic expansion valve 10 flows the high temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high temperature and low temperature gaseous refrigerants to form a medium temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. 8. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0033] Air conditioning box and battery heating circuit: The water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows through the pipeline into the warm air core 7 of the first circuit HVAC air conditioning assembly 20 and the fifth interface of the first seven-way valve 1 of the second circuit respectively. The first circuit warm air core 7 is blown by the HVAC blower to blow cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through the pipeline, and flows from the fourth interface of the second seven-way valve 5 to the second water pump 17 through the pipeline; the seventh interface of the first seven-way valve 1 of the second circuit flows to the third water pump 3 through the pipeline, and then the third water pump 3 blows the heated coolant The coolant after heat exchange flows from the battery pack to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow according to the different needs of the power battery 19 and flows to the third water pump 3 of the first circuit and the seventh interface of the second seven-way valve 5 of the second circuit respectively. The coolant after heat exchange in the first circuit flows to the third water pump 3 and is mixed with the heated coolant and then pumped into the battery pack. It flows to the second water pump 17 through the fourth interface of the second seven-way valve 5 of the second circuit, and then the second water pump 17 pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete coolant circuit for passenger compartment heating and battery heating.

[0034] Heat dissipation circuit of electronic control 14 and motor 21: the coolant heated by motor 21 and electronic control 14 flows through the pipeline to the sixth interface of the second seven-way valve 5, and flows through the fifth interface of the second seven-way valve 5 to the inlet of the first water pump 18 through the pipeline. The first water pump 18 pumps the coolant heated by electronic control 14 and motor 21 into the third interface of the first seven-way valve 1, and then flows into the low-temperature radiator 15 from the third interface of the first seven-way valve 1. The outside air is blown through the low-temperature radiator 15 by the condensing fan, and the low-temperature radiator 15 dissipates heat to the outside environment. The coolant after heat dissipation flows from the low-temperature radiator 15 to the motor 21 and electronic control 14, cools down the inside of the motor 21 and electronic control 14, and forms a complete heat dissipation circuit of coolant for motor 21.

[0035] Preferred embodiment 4, when the system is in the mode of recovering waste heat from the motor 21, heating the passenger compartment, and heating the power battery 19, the refrigerant circuit: the electric compressor 11 flows the compressed high-temperature and high-pressure refrigerant into the second electronic expansion valve 9 through the pipeline, and then the second electronic expansion valve 9 flows the high-temperature refrigerant through the pipeline to the water-cooled condenser 8, the water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17, the refrigerant after heat dissipation passes through the pipeline through the first electronic expansion valve 16 for throttling, the first electronic expansion valve 16 flows the throttled refrigerant to the plate heat exchanger 13 through the pipeline, the plate heat exchanger 13 cools and evaporates by circulating the antifreeze inside the plate heat exchanger 13, the plate heat exchanger 13 flows the evaporated refrigerant to the gas-liquid separator 12 through the pipeline, the gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid, and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0036] Air conditioning box and battery heating circuit: The water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows through the pipeline into the warm air core 7 of the first circuit HVAC air conditioning assembly 20 and the fifth interface of the first seven-way valve 1 of the second circuit respectively. The first circuit warm air core 7 is blown by the HVAC blower to blow cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through the pipeline, and flows from the fourth interface of the second seven-way valve 5 to the second water pump 17 through the pipeline; the seventh interface of the first seven-way valve 1 of the second circuit flows to the third water pump 3 through the pipeline, and then the third water pump 3 blows the heated coolant The coolant after heat exchange flows from the battery pack to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow according to the different needs of the power battery 19 and flows to the third water pump 3 of the first circuit and the seventh interface of the second seven-way valve 5 of the second circuit respectively. The coolant after heat exchange in the first circuit flows to the third water pump 3 and is mixed with the heated coolant and then pumped into the battery pack. It flows to the second water pump 17 through the fourth interface of the second seven-way valve 5 of the second circuit, and then the second water pump 17 pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete coolant circuit for passenger compartment heating and battery heating.

[0037] Waste heat recovery loop of motor 21: the plate heat exchanger 13 absorbs heat from the coolant heated by the motor 21 electronic control 14 pumped by the second water pump 17, and then flows to the first three-way proportional valve 6 through the pipeline. The first three-way proportional valve 6 (6) distributes the flow according to the heat demand of the system, and flows from the first three-way proportional valve 6 through the pipeline to the fourth interface of the first seven-way valve 1, and then flows into the low-temperature radiator 15 through the second interface of the first seven-way valve 1. The external air is blown through the low-temperature radiator 15 by the condensing fan. The low-temperature radiator 15 absorbs heat from the external environment. The coolant after absorbing heat flows from the low-temperature radiator 15 to the electronic control 14 motor 21, and absorbs heat again inside the electronic control 14 motor 21. After absorbing heat, it flows from the motor 21 electronic control 14 to the sixth interface of the second seven-way valve 5, and flows from the fifth interface of the second seven-way valve 5 to the first water pump 18 through the pipeline, and then is pumped back to the plate heat exchanger 13 by the first water pump 18, forming a complete coolant loop for electric drive air source and water source and waste heat recovery at the same time.

[0038] Preferred embodiment 5, when the system is in the mode of recovering waste heat from the motor 21, heating the passenger compartment, and self-circulating heat dissipation of the power battery 19, the refrigerant circuit: the electric compressor 11 flows the compressed high-temperature and high-pressure refrigerant into the second electronic expansion valve 9 through the pipeline, and then the second electronic expansion valve 9 flows the high-temperature refrigerant through the pipeline to the water-cooled condenser 8, and the water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17, and the refrigerant after heat dissipation passes through the pipeline through the first electronic expansion valve 16 for throttling, and the first electronic expansion valve 16 flows the throttled refrigerant to the plate heat exchanger 13 through the pipeline, and the plate heat exchanger 13 cools and evaporates by circulating the antifreeze inside the plate heat exchanger 13, and the plate heat exchanger 13 flows the evaporated refrigerant to the gas-liquid separator 12 through the pipeline, and the gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0039] Air conditioning heating and battery heat dissipation circuit: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the warm air core 7 of the HVAC air conditioning assembly 20 through the pipeline. The HVAC blower blows cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through the pipeline, and then flows to the second water pump 17 through the fourth interface of the second seven-way valve 5 through the pipeline. The second water pump 17 then pumps the coolant after heat exchange into the water-cooled condenser 8; the third water pump 3 pumps the coolant into the battery pack for heat exchange, and the coolant after heat exchange flows to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow rate according to the different needs of the power battery 19 and flows to the third water pump 3, forming a complete coolant circuit for air conditioning heating and battery self-circulation heat dissipation.

[0040] Waste heat recovery circuit of motor 21: the coolant heated by motor 21 and electronic control 14 flows through the pipeline to the sixth interface of the second seven-way valve 5, and flows through the fifth interface of the second seven-way valve 5 to the inlet of the first water pump 18 through the pipeline. The first water pump 18 pumps the coolant heated by electronic control 14 and motor 21 into the plate heat exchanger 13 for heat dissipation. The coolant after heat exchange flows from the plate heat exchanger 13 to the first three-way proportional valve 6 through the pipeline. The first three-way proportional valve 6 (6) distributes the flow according to the heat demand of the system, and flows from the first three-way proportional valve 6 to the fourth interface of the first seven-way valve 1 through the pipeline, and then flows from the first interface of the first seven-way valve 1 to the motor 21 electronic control 14 through the pipeline, forming a complete coolant circuit for waste heat recovery of motor 21.

[0041] Preferred embodiment 6, when the system is in a mode of recovering waste heat from the motor 21, no demand in the passenger compartment, and heating the power battery 19, the refrigerant circuit: the electric compressor 11 flows the compressed high-temperature and high-pressure refrigerant into the second electronic expansion valve 9 through a pipeline, and then the second electronic expansion valve 9 flows the high-temperature refrigerant through a pipeline to the water-cooled condenser 8, and the water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17, and the refrigerant after heat dissipation passes through the pipeline through the first electronic expansion valve 16 for throttling, and the first electronic expansion valve 16 flows the throttled refrigerant to the plate heat exchanger 13 through the pipeline, and the plate heat exchanger 13 cools and evaporates by circulating the antifreeze inside the plate heat exchanger 13, and the plate heat exchanger 13 flows the evaporated refrigerant to the gas-liquid separator 12 through a pipeline, and the gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through a pipeline to form a complete refrigerant circuit.

[0042] Battery heating circuit: The water-cooled condenser 8 heats the coolant pumped in by the second water pump 17, which flows into the fifth interface of the first seven-way valve 1 through the pipeline, and flows from the seventh interface of the first seven-way valve 1 to the third water pump 3 through the pipeline, and then the third water pump 3 pumps the heated coolant into the battery pack for heat exchange. The coolant after heat exchange flows from the battery pack to the second three-way proportional valve 4 through the pipeline, and the second three-way proportional valve 4 distributes the flow according to the different needs of the power battery 19 and flows to the seventh interface of the third water pump 3 of the first circuit and the second seven-way valve 5 of the second circuit at the same time. The coolant after heat exchange in the first circuit flows to the third water pump 3, is mixed with the heated coolant, and then is pumped into the battery pack, and flows from the fourth interface of the second seven-way valve 5 of the second circuit to the second water pump 17, and then the second water pump 17 pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete battery heating coolant circuit.

[0043] Waste heat recovery circuit of motor 21: the coolant heated by motor 21 and electronic control 14 flows through the pipeline to the sixth interface of the second seven-way valve 5, and flows through the fifth interface of the second seven-way valve 5 to the inlet of the first water pump 18 through the pipeline. The first water pump 18 pumps the coolant heated by electronic control 14 and motor 21 into the plate heat exchanger 13 for heat dissipation. The coolant after heat exchange flows from the plate heat exchanger 13 to the first three-way proportional valve 6 through the pipeline. The first three-way proportional valve 6 (6) distributes the flow according to the heat demand of the system, and flows from the first three-way proportional valve 6 to the fourth interface of the first seven-way valve 1 through the pipeline, and then flows from the first interface of the first seven-way valve 1 to the motor 21 electronic control 14 through the pipeline, forming a complete coolant circuit for waste heat recovery of motor 21.

[0044] Preferred embodiment 7, when the system is in the mode of recovering waste heat from the motor 21, heating the passenger compartment, and heating the power battery 19, the refrigerant circuit: the electric compressor 11 flows the compressed high-temperature and high-pressure refrigerant into the second electronic expansion valve 9 through the pipeline, and then the second electronic expansion valve 9 flows the high-temperature refrigerant through the pipeline to the water-cooled condenser 8, the water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17, the refrigerant after heat dissipation passes through the pipeline through the first electronic expansion valve 16 for throttling, the first electronic expansion valve 16 flows the throttled refrigerant to the plate heat exchanger 13 through the pipeline, the plate heat exchanger 13 cools and evaporates by circulating the antifreeze inside the plate heat exchanger 13, the plate heat exchanger 13 flows the evaporated refrigerant to the gas-liquid separator 12 through the pipeline, the gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid, and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0045] Air conditioning box and battery heating circuit: The water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows through the pipeline into the warm air core 7 of the first circuit HVAC air conditioning assembly 20 and the fifth interface of the first seven-way valve 1 of the second circuit respectively. The first circuit warm air core 7 is blown by the HVAC blower to blow cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through the pipeline, and flows from the fourth interface of the second seven-way valve 5 to the second water pump 17 through the pipeline; the seventh interface of the first seven-way valve 1 of the second circuit flows to the third water pump 3 through the pipeline, and then the third water pump 3 blows the heated coolant The coolant after heat exchange flows from the battery pack to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow according to the different needs of the power battery 19 and flows to the third water pump 3 of the first circuit and the seventh interface of the second seven-way valve 5 of the second circuit respectively. The coolant after heat exchange in the first circuit flows to the third water pump 3 and is mixed with the heated coolant and then pumped into the battery pack. It flows to the second water pump 17 through the fourth interface of the second seven-way valve 5 of the second circuit, and then the second water pump 17 pumps the coolant after heat exchange into the water-cooled condenser 8, forming a complete coolant circuit for passenger compartment heating and battery heating.

[0046] Waste heat recovery circuit of motor 21: the coolant heated by motor 21 and electronic control 14 flows through the pipeline to the sixth interface of the second seven-way valve 5, and flows through the fifth interface of the second seven-way valve 5 to the inlet of the first water pump 18 through the pipeline. The first water pump 18 pumps the coolant heated by electronic control 14 and motor 21 into the plate heat exchanger 13 for heat dissipation. The coolant after heat exchange flows from the plate heat exchanger 13 to the first three-way proportional valve 6 through the pipeline. The first three-way proportional valve 6 (6) distributes the flow according to the heat demand of the system, and flows from the first three-way proportional valve 6 to the fourth interface of the first seven-way valve 1 through the pipeline, and then flows from the first interface of the first seven-way valve 1 to the motor 21 electronic control 14 through the pipeline, forming a complete coolant circuit for waste heat recovery of motor 21.

[0047] Preferred embodiment 8, when the system is in a mode where the motor 21 is stalled to heat the battery, there is no demand in the passenger compartment, and the power battery 19 is heating, the refrigerant circuit: the electric compressor 11 is not turned on, and the refrigerant circuit does not circulate.

[0048] Motor 21 heats the battery circuit: Motor 21 stalls to generate heat to heat the coolant, and the heated coolant flows to the sixth interface of the second seven-way valve 5, and flows from the first interface of the second seven-way valve 5 through a pipeline to the sixth interface of the first seven-way valve 1, and then flows from the seventh interface of the first seven-way valve 1 to the third water pump 3. The third water pump 3 pumps the heated coolant into the battery to heat the inside of the battery pack, and then the battery pack flows the heat-exchanged coolant to the second three-way proportional valve 4 through a pipeline. The second three-way proportional valve 4 distributes the flow rate according to the different needs of the power battery 19 and flows through a pipeline to the seventh interface of the second seven-way valve 5, and flows from the fifth interface of the second seven-way valve 5 to the first water pump 18 through a pipeline, and then flows from the first water pump 18 to the third interface of the first seven-way valve 1 through a pipeline. The coolant after heat exchange then flows from the first interface of the first seven-way valve 1 through a pipeline to the electronic control 14 motor 21 for reheating, forming a complete motor 21 stalled heat-generating battery heating circuit.

[0049] Preferred embodiment 9, when the system is in the hot air bypass mode of heating the battery with the motor 21 stalled, heating the passenger compartment, and heating the power battery 19, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high-temperature and high-pressure refrigerant medium through the pipeline into the third electronic expansion valve 10, and then the third electronic expansion valve 10 flows the high-temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. 8. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0050] Air conditioning box circuit: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the heater core 7 of the HVAC air conditioning assembly 20 through a pipeline. The HVAC blower blows cold air over the surface of the heater core 7 for heat exchange, and finally blows the warm air toward the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through a pipeline, and flows from the fourth interface of the second seven-way valve 5 through a pipeline to the second water pump 17. The second water pump 17 then pumps the coolant after heat exchange into the water-cooled condenser 8, forming a circuit for the coolant to heat the passenger compartment.

[0051] The motor 21 actively generates heat to heat the battery circuit: the motor 21 is stalled to generate heat to heat the coolant, and the heated coolant flows to the sixth interface of the second seven-way valve 5, and flows from the first interface of the second seven-way valve 5 through a pipeline to the sixth interface of the first seven-way valve 1, and then flows from the seventh interface of the first seven-way valve 1 to the third water pump 3. The third water pump 3 pumps the heated coolant into the battery to heat the inside of the battery pack, and then the battery pack flows the heat-exchanged coolant to the second three-way proportional valve 4 through a pipeline. The second three-way proportional valve 4 distributes the flow rate according to the different needs of the power battery 19 and flows through a pipeline to the seventh interface of the second seven-way valve 5, and flows from the fifth interface of the second seven-way valve 5 to the first water pump 18 through a pipeline, and then flows from the first water pump 18 to the third interface of the first seven-way valve 1 through a pipeline. The coolant after heat exchange then flows from the first interface of the first seven-way valve 1 through a pipeline to the electronic control 14 motor 21 for reheating, forming a complete motor 21 stalled heat heating battery circuit.

[0052] Preferred embodiment 10, when the system is in the hot air bypass defrosting mode with no demand on the motor 21, no demand on the passenger compartment, and the power battery 19 self-circulating, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high-temperature and high-pressure refrigerant medium through the pipeline into the third electronic expansion valve 10, and then the third electronic expansion valve 10 flows the high-temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0053] Defrosting circuit of low-temperature radiator 15: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the fifth interface of the first seven-way valve 1 through the pipeline; the heated coolant flows to the low-temperature radiator 15 from the second interface of the first seven-way valve 1; the heated coolant inside the low-temperature radiator 15 dissipates heat to the external environment; the frosted part on the outer surface of the low-temperature radiator 15 is defrosted by the condensing fan; the coolant after heat dissipation flows from the low-temperature radiator 15 to the motor 21 electronic control 14; the motor 21 electronic control 14 flows to the sixth interface of the seven-way valve through the pipeline, and flows into the second water pump 17 from the fourth interface of the seven-way valve; the second water pump 17 then pumps the coolant after heat exchange into the water-cooled condenser 8 for heating, thereby forming a complete coolant defrosting circuit for the low-temperature radiator 15.

[0054] Battery heat dissipation circuit: The third water pump 3 pumps the coolant into the battery pack for heat exchange. The coolant after heat exchange flows to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow to the third water pump 3 according to the different needs of the power battery 19, forming a complete battery self-circulating heat dissipation coolant circuit.

[0055] Preferred embodiment 11, when the system is in the hot air bypass defrosting mode with no demand on the motor 21, heating in the passenger compartment, and self-circulating power battery 19, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high-temperature and high-pressure refrigerant medium through the pipeline into the third electronic expansion valve 10, and then the third electronic expansion valve 10 flows the high-temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser by the second electronic expansion valve 9. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 passes the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates by feeding the antifreeze flowing inside the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the refrigerant that has not been completely evaporated into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0056] Air conditioning heating and low-temperature radiator 15 defrosting circuit: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows through the pipelines into the warm air core 7 of the first circuit HVAC air conditioning assembly 20 and the fifth interface of the first seven-way valve 1 of the second circuit at the same time. The first circuit warm air core 7 is blown by the HVAC blower to blow cold air over the surface of the warm air core 7 for heat exchange, and finally blows the warm air to the passenger compartment. The coolant after heat exchange flows through the pipeline into the third interface of the second seven-way valve 5, and flows from the fourth interface of the second seven-way valve 5 to the second water pump 17 through the pipeline, and then flows from the second water pump 17 to the water-cooled condenser 8 through the pipeline; the coolant heated in the second circuit The cooling liquid flows from the second interface of the first seven-way valve 1 to the low-temperature radiator 15, and the heated cooling liquid inside the low-temperature radiator 15 dissipates heat to the external environment, and the frosted part of the outer surface of the low-temperature radiator 15 is defrosted by the condensing fan, and the cooling liquid flows from the low-temperature radiator 15 to the motor 21 electronic control 14, and the motor 21 electronic control 14 flows to the sixth interface of the seven-way valve through the pipeline, and flows into the second water pump 17 from the fourth interface of the seven-way valve to merge with the cooling liquid of the first circuit, and then the second water pump 17 pumps the cooling liquid after heat exchange into the water-cooled condenser 8 for heating again, forming a complete cooling liquid circuit for heating the passenger compartment and defrosting the low-temperature radiator 15.

[0057] Battery heat dissipation circuit: The third water pump 3 pumps the coolant into the battery pack for heat exchange. The coolant after heat exchange flows to the second three-way proportional valve 4 through the pipeline. The second three-way proportional valve 4 distributes the flow to the third water pump 3 according to the different needs of the power battery 19, forming a complete battery self-circulating heat dissipation coolant circuit.

[0058] Preferred embodiment 12, when the system is in the mode of waste heat recovery and passenger compartment heating with the motor 21 and the power battery 19 connected in series, the refrigerant circuit: the electric compressor 11 flows a part of the compressed high-temperature and high-pressure refrigerant into the third electronic expansion valve 10 through the pipeline, and then the third electronic expansion valve 10 flows the high-temperature refrigerant through the pipeline to the gas-liquid separator 12, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the pipeline through the second electronic expansion valve 9, and then is discharged into the water-cooled condenser 8 by the second electronic expansion valve 9. The water-cooled condenser 8 dissipates heat through the antifreeze pumped in by the second water pump 17. The refrigerant that has dissipated heat passes through the first electronic expansion valve 16 through the pipeline for throttling. The first electronic expansion valve 16 directs the throttled refrigerant to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates the antifreeze flowing through the inside of the plate heat exchanger 13. The plate heat exchanger 13 directs the evaporated refrigerant to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 separates the incompletely evaporated refrigerant into gas and liquid and then flows into the electric compressor 11 through the pipeline to form a complete refrigerant circuit.

[0059] Air conditioning circuit: the water-cooled condenser 8 heats the coolant pumped in by the second water pump 17 and flows into the heater core 7 of the HVAC air conditioning assembly 20 through a pipeline. The HVAC blower blows cold air over the surface of the heater core 7 for heat exchange, and finally blows the warm air toward the passenger compartment. The coolant after heat exchange flows into the third interface of the second seven-way valve 5 through a pipeline, and flows from the fourth interface of the second seven-way valve 5 through a pipeline to the second water pump 17. The second water pump 17 then pumps the coolant after heat exchange into the water-cooled condenser 8, forming a circuit for the coolant to heat the passenger compartment.

[0060] The motor 21 and the power battery 19 are connected in series to form a waste heat recovery circuit: the coolant heated by the motor 21 flows to the sixth interface of the second seven-way valve 5 through a pipeline, the first interface of the second seven-way valve 5 flows to the sixth interface of the first seven-way valve 1 through a pipeline, and flows from the seventh interface of the first seven-way valve 1 to the third water pump 3, and then the third water pump 3 pumps the heated coolant into the battery pack to absorb heat again, and the coolant after heat exchange flows to the second three-way proportional valve 4 through a pipeline, and the second three-way proportional valve 4 distributes the flow according to the system heat demand and flows to the second seven-way valve 5 The seventh interface flows from the fifth interface of the second seven-way valve 5 to the first water pump 18, and then the first water pump 18 pumps the heated coolant into the plate heat exchanger 13 for heat dissipation. The coolant after heat exchange flows from the plate heat exchanger 13 through the pipeline to the first three-way proportional valve 6, and the first three-way proportional valve 6 distributes the flow according to the system heat demand and then flows to the fourth interface of the first seven-way valve 1, and then flows from the first interface of the first seven-way valve 1 to the electronic control 14 motor 21, forming a complete coolant circuit for waste heat recovery with the electronic control 14 motor 21 connected in series with the battery.

[0061] Working principle: When in use, the electric compressor 11 flows part of the compressed high-temperature and high-pressure refrigerant through the pipeline into the third electronic expansion valve 10, and then the third electronic expansion valve 10 throttles the high-temperature and high-pressure refrigerant and flows to the gas-liquid separator 12 through the pipeline, and then the gas-liquid separator 12 mixes the high-temperature and low-temperature low-pressure gaseous refrigerants to form a medium-temperature gaseous refrigerant that flows to the inlet of the electric compressor 11, and the other part of the refrigerant passes through the second electronic expansion valve 9 through the pipeline, and then is discharged into the water-cooled condenser 8 by the second electronic expansion valve 9, and the water-cooled condenser 8 is pumped by the second water pump 17 The antifreeze liquid introduced is used to dissipate heat, and the heat-dissipated refrigerant medium passes through the pipeline and passes through the first electronic expansion valve 16 for throttling. The first electronic expansion valve 16 passes the throttled refrigerant medium to the plate heat exchanger 13 through the pipeline. The plate heat exchanger 13 cools and evaporates the antifreeze liquid flowing through the plate heat exchanger 13. The plate heat exchanger 13 passes the evaporated refrigerant medium to the gas-liquid separator 12 through the pipeline. The gas-liquid separator 12 passes the unevaporated refrigerant medium, and the electric compressor 11 with the air supply port passes the compressed high-temperature and high-pressure gaseous refrigerant medium through the pipeline. The water-cooled condenser 8 is discharged into the water-cooled condenser 8, and the water-cooled condenser 8 dissipates heat through the coolant pumped in by the second water pump 17. A part of the cooled high-pressure medium-temperature liquid refrigerant passes through the second electronic expansion valve 9 for throttling. The throttled medium-pressure low-temperature refrigerant enters the plate heat exchanger 13 and exchanges heat with the remaining other part of the main high-pressure medium-temperature refrigerant to evaporate into a medium-pressure gaseous refrigerant, which flows to the air supply port of the electric compressor 11 through a pipeline for compression. At the same time, the main high-pressure supercooled refrigerant that is further cooled flows through a pipeline to the third electronic expansion valve 10, and the third electronic expansion valve 10 converts the throttled medium-pressure low-temperature refrigerant into a medium-pressure gaseous refrigerant. The low-temperature and low-pressure refrigerant flows to the plate heat exchanger 13, and the plate heat exchanger 13 absorbs heat and evaporates by flowing through the coolant inside the plate heat exchanger 13. The plate heat exchanger 13 flows the evaporated refrigerant medium to the gas-liquid separator 12 through a pipeline, and the gas-liquid separator 12 separates the incompletely evaporated low-temperature and low-pressure refrigerant into gas and liquid. The gaseous refrigerant then flows into the air intake port of the electric compressor 11 through a pipeline for preliminary compression, and then is mixed with the refrigerant in the air supply circuit inside the electric compressor 11 for further compression and then discharged into the water-cooled condenser 8, forming a complete refrigerant medium circuit.

[0062] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances; The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermal management system based on hot gas bypass, comprising a power battery (19), an electric compressor (11), a plate heat exchanger (13), a water-cooled condenser (8), a first electronic expansion valve (16), a second electronic expansion valve (9), a third electronic expansion valve (10), a first water pump (18), a second water pump (17), a third water pump (3), a gas-liquid separator (12), a first seven-way valve (1), a second seven-way valve (5), a low-temperature radiator (15), an HVAC air conditioning assembly (20), a first three-way proportional valve (6), a second three-way proportional valve (4), a motor (21) and an electronic control (14), characterized in that: The refrigerant circulation circuit is connected to the third electronic expansion valve (10) through a pipeline from a first circuit at the outlet of the electric compressor (11), and the third electronic expansion valve (10) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to the third electronic expansion valve (10) through a pipeline, the third electronic expansion valve (10) is connected to a water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to a plate heat exchanger (13) through a pipeline, the plate heat exchanger (13) is connected to a gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; The motor coolant circuit: the coolant in the water-cooled condenser (8) is connected to the heater core (7) of the first-circuit HVAC air conditioning assembly (20) and the first seven-way valve (1) of the second circuit through pipelines, the heater core (7) of the first-circuit HVAC air conditioning assembly (20) is connected to the second seven-way valve (5) through pipelines, the second seven-way valve (5) is connected to the second water pump (17) through pipelines, the second water pump (17) is connected to the water-cooled condenser (8) through pipelines, the first seven-way valve (1) of the second circuit is connected to the low-temperature radiator (15) through pipelines, the low-temperature radiator (15) is connected to the motor (21) and the electric control (14) through pipelines, the electric control (14) and the motor (21) are connected to the second seven-way valve (5) through pipelines, the second seven-way valve (5) is connected to the second water pump (17) through pipelines, and the second water pump (17) is connected to the water-cooled condenser (8) through pipelines; The air conditioning and battery coolant circuits: the coolant in the plate heat exchanger (13) is connected to the first three-way proportional valve (6) through a pipeline; the first three-way proportional valve (6) is connected to the cold air core (2) of the first circuit HVAC air conditioning assembly (20) and the first seven-way valve (1) of the second circuit through pipelines; the cold air core (2) of the first circuit HVAC air conditioning assembly (20) is connected to the first water pump (18) through a pipeline; the first water pump (18) is connected to the plate heat exchanger (13) through a pipeline; the first seven-way valve (1) of the second circuit is connected to the third water pump (3) of the third circuit and the first seven-way valve (1) of the fourth circuit through pipelines. The second and third-way proportional valves (4) are connected simultaneously; the third water pump (3) of the third circuit is connected to a battery via a pipeline; the battery is connected to the second three-way proportional valve (4) via a pipeline; the second three-way proportional valve (4) is connected to the second seven-way valve (5) via a pipeline; the second seven-way valve (5) is connected to the first water pump (18) via a pipeline; the first water pump (18) is connected to the plate heat exchanger (13); the second three-way proportional valve (4) of the fourth circuit is connected to the second seven-way valve (5) via a pipeline; the second seven-way valve (5) is connected to the first water pump (18) via a pipeline; the first water pump (18) is connected to the plate heat exchanger (13).

2. A hot gas bypass thermal management system according to claim 1, characterized in that: The outlet main pipeline of the electric compressor (11) is provided with a first temperature and pressure sensor, the pipeline between the water-cooled condenser (8) and the first electronic expansion valve (16) is also provided with a second temperature and pressure sensor, the outlet main pipeline of the plate heat exchanger (13) is provided with a third temperature and pressure sensor, and the pipeline between the third electronic expansion valve (10) and the gas-liquid separator (12) is also provided with a fourth temperature and pressure sensor.

3. The hot gas bypass thermal management system according to claim 1, characterized in that: A first temperature sensor is provided on the pipeline between the plate heat exchanger (13) and the first three-way proportional valve (6), a second temperature sensor is also provided on the pipeline between the water-cooled condenser (8) and the first seven-way valve (1), a third temperature sensor is also provided on the pipeline between the warm air core (7) of the HVAC air conditioning assembly (20) and the first seven-way valve (1), a fourth temperature sensor is also provided on the pipeline between the cold air core (2) of the HVAC air conditioning assembly (20) and the first seven-way valve (1), a fifth temperature sensor is also provided on the pipeline between the third water pump (3) and the battery, a sixth temperature sensor is also provided on the pipeline between the battery and the second three-way proportional valve (4), a seventh temperature sensor is also provided on the pipeline between the low-temperature radiator (15) and the first seven-way valve (1), an eighth temperature sensor is also provided on the pipeline between the low-temperature radiator (15), the motor (21) and the electronic control (14), and a ninth temperature sensor is also provided on the pipeline between the battery and the second seven-way valve (5).

4. The hot gas bypass thermal management system according to claim 1, characterized in that: The refrigerant circulation circuit is extended by a first circuit at the outlet of the electric compressor (11) connected to a second electronic expansion valve (9) through a pipeline, and the second electronic expansion valve (9) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to a water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to a plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to a gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; The refrigerant circulation circuit is extended by connecting the first circuit at the outlet of the electric compressor (11) to the third electronic expansion valve (10) through a pipeline, and the third electronic expansion valve (10) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline; The refrigerant circulation circuit is expanded by connecting the first circuit of the outlet of the electric compressor (11) to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the inlet of the electric compressor (11) through a pipeline, the second circuit of the outlet of the electric compressor (11) is connected to the water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline.

5. The hot gas bypass thermal management system according to claim 1, characterized in that: The second cooling liquid circulation loop is connected to the third electronic expansion valve (10) through a pipeline from the first loop at the outlet of the electric compressor (11), and the third electronic expansion valve (10) is connected to the inlet of the electric compressor (11) through a pipeline; the second loop at the outlet of the electric compressor (11) is connected to the third electronic expansion valve (10) through a pipeline, the third electronic expansion valve (10) is connected to the water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, the plate heat exchanger (13) is connected to the gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; The motor coolant circuit: the coolant in the water-cooled condenser (8) is connected to the heater core (7) of the first-circuit HVAC air conditioning assembly (20) and the first seven-way valve (1) of the second circuit through pipelines, the heater core (7) of the first-circuit HVAC air conditioning assembly (20) is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump (17) through a pipeline, the second water pump (17) is connected to the water-cooled condenser (8) through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator (15) through a pipeline, the low-temperature radiator (15) is connected to the motor (21) and the electric control (14) through a pipeline, the electric control (14) and the motor (21) are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump (17) through a pipeline, and the second water pump (17) is connected to the water-cooled condenser (8) through a pipeline; The air conditioner and the battery coolant circuit: the coolant in the plate heat exchanger (13) is connected to the first three-way proportional valve (6) through a pipeline; the first three-way proportional valve (6) is connected to the cold air core (2) of the first circuit HVAC air conditioner assembly (20) and the second circuit seven-way valve through pipelines; the cold air core (2) of the first circuit HVAC air conditioner assembly (20) is connected to the first water pump (18) through a pipeline; the first water pump (18) is connected to the plate heat exchanger (13) through a pipeline; the second circuit seven-way valve is connected to the third circuit third water pump (3) and the The second three-way proportional valve (4) of the fourth circuit is connected at the same time, the third water pump (3) of the third circuit is connected to the battery via a pipeline, the battery is connected to the second three-way proportional valve (4) via a pipeline, the second three-way proportional valve (4) is connected to the six-way valve via a pipeline, the six-way valve is connected to the first water pump (18) via a pipeline, and the first water pump (18) is connected to the plate heat exchanger (13); the second three-way proportional valve (4) of the fourth circuit is connected to the six-way valve via a pipeline, the six-way valve is connected to the first water pump (18) via a pipeline, and the first water pump (18) is connected to the plate heat exchanger (13).

6. The hot gas bypass thermal management system according to claim 5, characterized in that: Based on the expansion of the coolant circuit 2, the refrigerant circulation circuit 1 is extended by connecting the first circuit at the outlet of the electric compressor (11) to the second electronic expansion valve (9) through a pipeline, and the second electronic expansion valve (9) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to the water-cooled condenser (8) through a pipeline, and the water-cooled condenser (8) is connected to the first electronic expansion valve (16) through a pipeline, and the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; The refrigerant circulation circuit is extended by connecting the first circuit at the outlet of the electric compressor (11) to the third electronic expansion valve (10) through a pipeline, and the third electronic expansion valve (10) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline; The refrigerant circulation circuit is expanded by connecting the first circuit at the outlet of the electric compressor (11) to the second electronic expansion valve (9) through a pipeline, and the second electronic expansion valve (9) is connected to the inlet of the electric compressor (11) through a pipeline; the second circuit at the outlet of the electric compressor (11) is connected to the water-cooled condenser (8) through a pipeline, the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline.

7. The hot gas bypass thermal management system according to claim 1, characterized in that: A heat management system based on air supplement and enthalpy increase is expanded based on a heat management system based on hot gas bypass, and a refrigerant circulation loop is connected to a water-cooled condenser (8) through a pipeline at the outlet of the electric compressor (11), a first loop at the outlet of the water-cooled condenser (8) is connected to a first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to a first inlet of a plate heat exchanger (13) through a pipeline, and the first outlet of the plate heat exchanger (13) is connected to the electric compressor ( 11) connected to the air supply port; the second circuit of the outlet of the water-cooled condenser (8) is connected to the second inlet of the plate heat exchanger (13) through a pipeline, the second outlet of the plate heat exchanger (13) is connected to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the plate heat exchanger (13) through a pipeline, the plate heat exchanger (13) is connected to the gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; The motor coolant circuit: the coolant in the water-cooled condenser (8) is connected to the heater core (7) of the first-circuit HVAC air conditioning assembly (20) and the first seven-way valve (1) of the second circuit through pipelines, the heater core (7) of the first-circuit HVAC air conditioning assembly (20) is connected to the second seven-way valve (5) through pipelines, the second seven-way valve (5) is connected to the second water pump (17) through pipelines, the second water pump (17) is connected to the water-cooled condenser (8) through pipelines, the first seven-way valve (1) of the second circuit is connected to the low-temperature radiator (15) through pipelines, the low-temperature radiator (15) is connected to the motor (21) and the electric control (14) through pipelines, the electric control (14) and the motor (21) are connected to the second seven-way valve (5) through pipelines, the second seven-way valve (5) is connected to the second water pump (17) through pipelines, and the second water pump (17) is connected to the water-cooled condenser (8) through pipelines; The air conditioning and battery coolant circuits: the coolant in the plate heat exchanger (13) is connected to the first three-way proportional valve (6) through a pipeline; the first three-way proportional valve (6) is connected to the cold air core (2) of the first circuit HVAC air conditioning assembly (20) and the first seven-way valve (1) of the second circuit through pipelines; the cold air core (2) of the first circuit HVAC air conditioning assembly (20) is connected to the first water pump (18) through a pipeline; the first water pump (18) is connected to the plate heat exchanger (13) through a pipeline; the first seven-way valve (1) of the second circuit is connected to the third water pump (3) of the third circuit and the first seven-way valve (1) of the fourth circuit through pipelines. The second and third-way proportional valves (4) are connected simultaneously; the third water pump (3) of the third circuit is connected to a battery via a pipeline; the battery is connected to the second three-way proportional valve (4) via a pipeline; the second three-way proportional valve (4) is connected to the second seven-way valve (5) via a pipeline; the second seven-way valve (5) is connected to the first water pump (18) via a pipeline; the first water pump (18) is connected to the plate heat exchanger (13); the second three-way proportional valve (4) of the fourth circuit is connected to the second seven-way valve (5) via a pipeline; the second seven-way valve (5) is connected to the first water pump (18) via a pipeline; the first water pump (18) is connected to the plate heat exchanger (13).

8. The hot gas bypass thermal management system according to claim 7, characterized in that: At the same time, another refrigerant circulation loop with air replenishment and enthalpy increase technology is extended, and the refrigerant circulation loop is connected by the outlet of the electric compressor (11) to the water-cooled condenser (8) through a pipeline, the outlet of the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the first circuit of the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the first inlet of the plate heat exchanger (13) through a pipeline, and the first outlet of the plate heat exchanger (13) is connected to the air replenishment port of the electric compressor (11) through a pipeline; the second circuit of the outlet of the water-cooled condenser (8) is connected to the second inlet of the plate heat exchanger (13) through a pipeline, the second outlet of the plate heat exchanger (13) is connected to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline.

9. The hot gas bypass thermal management system according to claim 7, characterized in that: A second coolant circulation loop is extended, and the refrigerant circulation loop is connected to the water-cooled condenser (8) through a pipeline from the outlet of the electric compressor (11); the first loop of the outlet of the water-cooled condenser (8) is connected to the first electronic expansion valve (16) through a pipeline; the first electronic expansion valve (16) is connected to the first inlet of the plate heat exchanger (13) through a pipeline; the first outlet of the plate heat exchanger (13) is connected to the air supply port of the electric compressor (11) through a pipeline; the second loop of the outlet of the water-cooled condenser (8) is connected to the second inlet of the plate heat exchanger (13) through a pipeline; the second outlet of the plate heat exchanger (13) is connected to the second electronic expansion valve (9) through a pipeline; the second electronic expansion valve (9) is connected to the plate heat exchanger (13) through a pipeline; the plate heat exchanger (13) is connected to the gas-liquid separator (12) through a pipeline; the gas-liquid separator (12) is connected to the inlet of the electric compressor (11) through a pipeline; Motor coolant circuit: the coolant in the water-cooled condenser (8) is connected to the heater core (7) of the first-circuit HVAC air conditioning assembly (20) and the second-circuit seven-way valve through pipelines, the heater core (7) of the first-circuit HVAC air conditioning assembly (20) is connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump (17) through a pipeline, the second water pump (17) is connected to the water-cooled condenser (8) through a pipeline, the second-circuit seven-way valve is connected to the low-temperature radiator (15) through a pipeline, the low-temperature radiator (15) is connected to the motor (21) and the electric control (14) through a pipeline, the electric control (14) and the motor (21) are connected to the six-way valve through a pipeline, the six-way valve is connected to the second water pump (17) through a pipeline, and the second water pump (17) is connected to the water-cooled condenser (8) through a pipeline; The air conditioner and the battery coolant circuit: the coolant in the plate heat exchanger (13) is connected to the first three-way proportional valve (6) through a pipeline; the first three-way proportional valve (6) is connected to the cold air core (2) of the first circuit HVAC air conditioner assembly (20) and the second circuit seven-way valve through pipelines; the cold air core (2) of the first circuit HVAC air conditioner assembly (20) is connected to the first water pump (18) through a pipeline; the first water pump (18) is connected to the plate heat exchanger (13) through a pipeline; the second circuit seven-way valve is connected to the third circuit third water pump (3) and the The second three-way proportional valve (4) of the fourth circuit is connected at the same time, the third water pump (3) of the third circuit is connected to the battery via a pipeline, the battery is connected to the second three-way proportional valve (4) via a pipeline, the second three-way proportional valve (4) is connected to the six-way valve via a pipeline, the six-way valve is connected to the first water pump (18) via a pipeline, and the first water pump (18) is connected to the plate heat exchanger (13); the second three-way proportional valve (4) of the fourth circuit is connected to the six-way valve via a pipeline, the six-way valve is connected to the first water pump (18) via a pipeline, and the first water pump (18) is connected to the plate heat exchanger (13).

10. The hot gas bypass thermal management system according to claim 9, characterized in that: At the same time, a variety of refrigerant circulation circuits with air replenishment and enthalpy increase technology can be expanded, and the refrigerant circulation circuit is connected by the outlet of the electric compressor (11) to the water-cooled condenser (8) through a pipeline, the outlet of the water-cooled condenser (8) is connected to the liquid storage tank through a pipeline, the first circuit of the liquid storage tank is connected to the first electronic expansion valve (16) through a pipeline, the first electronic expansion valve (16) is connected to the first inlet of the plate heat exchanger (13) through a pipeline, and the first outlet of the plate heat exchanger (13) is connected to the air replenishment port of the electric compressor (11) through a pipeline; the second circuit of the outlet of the water-cooled condenser (8) is connected to the second inlet of the plate heat exchanger (13) through a pipeline, the second outlet of the plate heat exchanger (13) is connected to the second electronic expansion valve (9) through a pipeline, the second electronic expansion valve (9) is connected to the plate heat exchanger (13) through a pipeline, and the plate heat exchanger (13) is connected to the inlet of the electric compressor (11) through a pipeline.

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