Thermal management system based on independent adjustment of temperature and humidity

Abstract

The utility model discloses a thermal management system based on independent adjustment of temperature and humidity. The thermal management system further comprises a compressor, the evaporator group comprises a first medium-temperature evaporator, a second medium-temperature evaporator and a third medium-temperature evaporator which are arranged in parallel; the heat management system is switched among a plurality of heat regulation modes under the action of the reversing valve; the first medium-temperature evaporator and a sensible heat adjusting system of the air conditioning system form a first temperature adjusting loop, and the first medium-temperature evaporator is used for adjusting sensible heat of an air conditioner; the second medium-temperature evaporator and the battery heat management module form a second temperature adjusting loop, and the second medium-temperature evaporator is used for adjusting the temperature of the battery module; and the third medium-temperature evaporator, the motor and the electric control heat management module form a third temperature adjusting loop, and the third medium-temperature evaporator is used for adjusting the temperature of the motor electric control module. Under the scene that environment temperature adjustment, motor temperature control and electric control system temperature control need to be considered, the efficiency of the whole machine is improved, and power consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management, and in particular to a thermal management system based on independent regulation of temperature and humidity. Background Art

[0002] With the continuous improvement of people's living standards, thermal management systems have been used more and more widely. In some electric devices, such as electric vehicles, the thermal management system needs to take into account the temperature regulation of the environment, the motor and the electronic control system. The existing overall thermal management system basically shares a compressor with the air-conditioning system. The evaporation temperature is low in summer, and condensed water is easily generated. It is impossible to use the full direct cooling mode. Therefore, most of them generally use a refrigerant fluorine-water heat exchanger to convert the cooling capacity provided by the compressor into cold water, and then use the water pump circulation to take away the heat generated by the battery, motor and electronic control system. The system is complex and there is efficiency loss in the fluorine-water heat exchange, which increases the power consumption of the water pump.

[0003] Therefore, in scenarios where it is necessary to take into account ambient temperature regulation, battery system temperature control, and motor and electronic control system temperature control, how to simplify the thermal management system, enhance system stability, and at the same time achieve full coupling of the three thermal loads under wide temperature conditions, improve overall machine efficiency, and reduce power consumption has become an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] In order to overcome at least one problem existing in the related art to at least some extent, the present application provides a thermal management system based on independent regulation of temperature and humidity.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A thermal management system based on independent regulation of temperature and humidity, the thermal management system comprising an air conditioning system, a battery thermal management module, and a motor and electronic control thermal management module, the thermal management system also comprising:

[0007] A compressor, wherein the compressor is a two-stage compressor with an intermediate cavity;

[0008] An evaporator group, the evaporator group comprising a low-temperature evaporator, a first medium-temperature evaporator, a second medium-temperature evaporator and a third medium-temperature evaporator arranged in parallel;

[0009] a reversing valve, under the action of which the thermal management system switches between a plurality of thermal regulation modes;

[0010] Among them, the first medium-temperature evaporator and the sensible heat regulation system of the air-conditioning system constitute a first temperature control circuit, and the first medium-temperature evaporator is used for air-conditioning sensible heat regulation; the second medium-temperature evaporator and the battery thermal management module constitute a second temperature control circuit, and the second medium-temperature evaporator is used for battery module temperature regulation; the third medium-temperature evaporator and the motor and electronic control thermal management module constitute a third temperature control circuit, and the third medium-temperature evaporator is used for motor electronic control module temperature regulation; the low-temperature evaporator and the latent heat regulation system of the air-conditioning system constitute a humidity control circuit.

[0011] In this way, based on the independent temperature and humidity adjustment technology, high-temperature refrigerant can be used to directly evaporate and cool the motor, electronic control and battery system, eliminating the water pump and heat exchange loss, improving the efficiency of the whole machine, and saving battery power. In the scenario where it is necessary to take into account the ambient temperature adjustment, motor temperature control and electronic control system temperature control, the thermal management system can be simplified, the system stability can be enhanced, and the efficiency of the whole machine can be improved and the power consumption can be reduced.

[0012] In some embodiments, the battery module is built into the second medium-temperature evaporator or the second medium-temperature evaporator is built into the battery module, and / or the motor and electronic control module is built into the third medium-temperature evaporator or the third medium-temperature evaporator is built into the motor and electronic control module, or a refrigerant and coolant heat exchanger is used to replace cooling water, and thermal management of the motor and electronic control is performed through cooling water circulation.

[0013] In some embodiments, the motor and electronic control cooling modes include direct cooling by refrigerant and indirect cooling by cooling water.

[0014] In some embodiments, when the thermal management system is in air conditioning cooling mode, direct battery cooling and / or motor and electronically controlled cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, the outlet B of the reversing valve is connected to the outlet C, and the refrigerant is divided into four branches after passing through the condenser outlet;

[0015] The first cooling branch includes the first throttle valve, the low-temperature evaporator, the fifth switch valve, the outlet B of the reversing valve, the outlet C of the reversing valve and the low-pressure air intake of the compressor in the conducting direction;

[0016] The second cooling branch includes a second throttle valve, a first medium-temperature evaporator and a seventh switch valve in sequence along the conducting direction;

[0017] The third cooling branch includes a third throttle valve and a second medium-temperature evaporator in sequence along the conducting direction;

[0018] The fourth cooling branch includes a fourth throttle valve, a third medium-temperature evaporator and a ninth switch valve in sequence along the conducting direction;

[0019] After the second cooling branch, the third cooling branch and the fourth cooling branch are merged, they enter the middle suction cavity of the compressor through the eighth switch valve;

[0020] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

[0021] In some embodiments, when the thermal management system is in the air conditioning heating mode, the battery direct cooling mode and / or the motor electronic control cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D;

[0022] When the air conditioning heating demand is large, and the battery and / or motor electronic control cooling demand is also large, the main cooling pipeline includes the inlet A of the reversing valve, the outlet B of the reversing valve, the low-temperature evaporator, and / or the first throttle valve and the first medium-temperature evaporator in the conducting direction;

[0023] The main cooling pipeline is divided into three branches after the low-temperature evaporator and / or the first medium-temperature evaporator, wherein the first branch includes the third throttling switch valve and the second medium-temperature evaporator in sequence along the conducting direction; the second branch includes the fourth throttling switch valve, the third medium-temperature evaporator and the ninth switch valve in sequence along the conducting direction; the third branch includes the condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conducting direction;

[0024] The first branch and the second branch merge and then pass through the eighth switch valve into the middle chamber of the compressor;

[0025] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the battery direct cooling and / or the motor and electronic control cooling mode;

[0026] When the air conditioning heating demand is large and the battery cooling and / or the motor and electronic control cooling demand is small, the first throttle valve and / or the second throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch and the second branch after the eighth switch valve and enters the middle cavity of the compressor;

[0027] When the air conditioning heating demand is small, and the battery cooling and / or motor electronic control cooling demand is large, the main line includes the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator respectively, and then passes through the third throttle valve and the second medium-temperature evaporator and / or the fourth throttle valve and the third medium-temperature evaporator respectively, and then passes through the ninth switch valve, the tenth switch valve, the eleventh switch valve, the reversing valve D port and the reversing valve C port to the low-pressure suction port of the compressor;

[0028] When the air conditioning heating demand is small, and the battery cooling and motor electronic control cooling demand are also small, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, reduce the heat release of the condenser to the external environment, and at the same time the compressor runs at a reduced frequency.

[0029] In some embodiments, when the thermal management system is in air conditioning heating mode, direct battery heating and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D;

[0030] When the sum of the heating requirements of the air conditioner and the battery is large, and the motor electronic control cooling requirement is also large, the main cooling pipeline includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the fifth switch valve and / or the sixth switch valve, the seventh switch valve, the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator in parallel in the conducting direction;

[0031] The main line is divided into two branches after the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator connected in parallel; wherein the first branch includes the fourth throttling switch valve, the third medium-temperature evaporator, the tenth switch valve and the middle cavity of the compressor in the conducting direction; the second branch includes the flasher, the condenser, the fifteenth throttling valve, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure air intake of the compressor in the conducting direction;

[0032] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct heating of the battery and / or the motor and electronically controlled cooling mode;

[0033] When the sum of the heating requirements of the air conditioner and the battery is large, and when the cooling requirements of the motor and the electronic control are small, the first throttle valve and / or the second throttle valve and / or the third throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch after the tenth switch valve and enters the middle cavity of the compressor;

[0034] When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling requirement is large, the main pipeline includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, respectively passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator, the second medium-temperature evaporator, and after merging, passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the D port of the reversing valve, the C port of the reversing valve, and returns to the low-pressure suction port of the compressor;

[0035] When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling demand is also small, under the premise of ensuring the heating of the battery, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, thereby reducing the heat release of the condenser to the external environment, and at the same time the compressor runs at a reduced frequency.

[0036] In some embodiments, when the thermal management system is in the air conditioning off mode, direct battery heating and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D;

[0037] When the heating amount required by the battery is greater than or equal to the cooling amount required by the motor electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve in the conducting direction;

[0038] The main line is divided into two branches after the third throttling, wherein the first branch includes the fourth throttling valve, the third medium-temperature evaporator, the tenth switch valve and the eleventh switch valve in the conducting direction; the second branch passes through the flasher and the condenser and merges with the first branch, and enters the low-pressure suction port of the compressor through the outlet D and outlet C of the reversing valve;

[0039] When the heating amount required by the battery is less than the cooling amount required by the motor electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, and then is divided into two branches, wherein the first branch passes through the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve;

[0040] The second branch passes through the fourteenth switch valve, the condenser, and the flasher, and merges with the first branch after the third throttle valve, and passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the outlet D and the outlet C of the reversing valve to enter the low-pressure suction port of the compressor;

[0041] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct heating of the battery and / or the motor and electronically controlled cooling mode.

[0042] In some embodiments, when the thermal management system is in the air conditioning off mode, battery direct cooling and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, and the outlet B of the reversing valve is connected to the outlet C;

[0043] The main line includes the compressor, the inlet A of the reversing valve, the outlet D of the reversing valve and the condenser in the conducting direction; after the condenser, it is divided into two parallel branches.

[0044] The two branches respectively include the third throttle valve, the second medium-temperature evaporator and the fourth throttle valve, the third medium-temperature evaporator, and after merging, they pass through the seventh switch valve, the sixth switch valve, the outlet B of the reversing valve and the outlet C of the reversing valve in sequence to return to the low-pressure suction port of the compressor;

[0045] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

[0046] In some embodiments, when the thermal management system is in the air conditioning heating mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D;

[0047] The main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the fifth switch valve and the sixth switch valve in parallel, the low-temperature evaporator and the first medium-temperature evaporator in parallel in the conducting direction. After merging, it enters the condenser and returns to the low-pressure suction port of the compressor through the outlet D and the outlet C of the reversing valve.

[0048] In some embodiments, when the thermal management system is in the air conditioning cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, and the outlet C of the reversing valve is connected to the outlet B;

[0049] The main line includes the compressor, the inlet A of the reversing valve, the outlet D of the reversing valve and the condenser in sequence along the conduction direction; it is divided into two parallel branches after the condenser, wherein the first branch includes the first throttle valve, the low-temperature evaporator, the fifth switch valve, the outlet B of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conduction direction; the second branch includes the second throttle valve, the first medium-temperature evaporator, the seventh switch valve, the eighth switch valve and the middle cavity of the compressor in sequence along the conduction direction.

[0050] In some embodiments, when the thermal management system is in the air conditioning air supplement enthalpy increase mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D;

[0051] The main line includes the compressor, the inlet A of the reversing valve and the outlet B of the reversing valve in sequence along the conducting direction; after the outlet B of the reversing valve, it is divided into two parallel branches;

[0052] The first branch includes, in the conducting direction, a fifth switch valve and a sixth switch valve connected in parallel and at least one of them is conducting, a low-temperature evaporator and a first medium-temperature evaporator connected in parallel and at least one of them is conducting, a first throttle valve and a second throttle valve connected in parallel and at least one of them is conducting, and then merges into the flasher, and then is divided into two branches, one of which is connected to the middle chamber of the compressor through the thirteenth switch valve;

[0053] The other branch includes the flasher, the twelfth throttle valve, the condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conducting direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is one of the structural schematic diagrams of the thermal management system based on independent regulation of temperature and humidity provided by the utility model;

[0055] Figure 2 This is the second structural schematic diagram of the thermal management system based on independent regulation of temperature and humidity provided by the utility model.

[0056] Description of reference numerals:

[0057] 1-first throttle valve, 2-second throttle valve, 3-third throttle valve, 4-fourth throttle valve, 5-fifth switch valve, 6-sixth switch valve, 7-seventh switch valve, 8-eighth switch valve, 9-ninth switch valve, 10-tenth switch valve, 11-eleventh switch valve, 12-flash, 13-thirteenth switch valve, 14-twelfth throttle valve, 15-reversing valve, 16-condenser, 17-compressor, 18-low-temperature evaporator, 19-first medium-temperature evaporator, 20-second medium-temperature evaporator, 21-third medium-temperature evaporator, 22-fourteenth switch valve, 23-fifteenth switch valve, 24-refrigerant-water heat exchanger, 25-water-cooled radiator, 26-circulating water pump, 27-electric control, 28-motor, 29-three-way valve. DETAILED DESCRIPTION

[0058] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0059] The air conditioner provided by the utility model can be applied to any scenario with triple regulation requirements of ambient temperature regulation, battery temperature regulation and motor and electronic control temperature regulation, such as industrial air conditioners, vehicle air conditioners, air conditioners used in spacecraft, etc. In these application scenarios, traditional thermal management solutions mostly use water cooling to avoid the problem that the refrigerant temperature provided by the air conditioner compressor is too low and directly supplies the three-electric system (battery, motor, and electronic control) with heat to produce condensed water. However, the water cooling solution system is relatively complex and has high power consumption.

[0060] In order to solve the above problems, the thermal management system based on independent regulation of temperature and humidity provided by the utility model fully utilizes the characteristic that the heat generated by the three-electric system is sensible heat, and adopts the high-temperature cold source of the compressor that independently regulates temperature and humidity to reduce power consumption and improve the temperature regulation efficiency of the whole machine.

[0061] In a specific embodiment, Figure 1As shown, the thermal management system based on independent regulation of temperature and humidity provided by the utility model utilizes an air-conditioning system with independent regulation of temperature and humidity to achieve coordinated regulation of three-electric systems, wherein the three-electric systems include an air-conditioning system, a battery thermal management module, and a motor and electronic control thermal management module. The thermal management system includes a compressor 17, an evaporator group and a reversing valve 15. The compressor 17 is a two-stage compressor with an intermediate cavity. The evaporator group includes a low-temperature evaporator, a first medium-temperature evaporator 19, a second medium-temperature evaporator 20 and a third medium-temperature evaporator 21 arranged in parallel. The thermal management system switches between multiple heat regulation modes under the action of the reversing valve 15; wherein the first medium-temperature evaporator 19 and the sensible heat regulation system of the air-conditioning system constitute a first temperature regulation circuit, and the first medium-temperature evaporator 19 is used for air-conditioning sensible heat regulation; the second medium-temperature evaporator 20 and the battery thermal management module constitute a second temperature regulation circuit, and the second medium-temperature evaporator 20 is used for battery module temperature regulation; the third medium-temperature evaporator 21 and the motor and electronic control thermal management constitute a third temperature regulation circuit, and the third medium-temperature evaporator 21 is used for motor electronic control module temperature regulation; the low-temperature evaporator and the latent heat regulation system of the air-conditioning system constitute a humidity regulation circuit.

[0062] That is to say, the compressor 17 adopts a two-stage compressor with an intermediate cavity, and the evaporator is divided into a medium-temperature evaporator and a low-temperature evaporator 18, wherein the medium-temperature evaporator includes a medium-temperature evaporator for air-conditioning sensible heat regulation, a medium-temperature evaporator for battery thermal management, and a medium-temperature evaporator for motor electronic thermal management that are arranged in parallel. In this way, based on the independent temperature and humidity regulation technology, high-temperature refrigerant can be used to directly evaporate and cool the motor, electronic control and battery system, eliminating the water pump and heat exchange loss, improving the efficiency of the whole machine, and increasing the battery power saving. In the scenario where it is necessary to take into account the ambient temperature regulation, motor temperature control and electronic control system temperature control, the thermal management system can be simplified, the system stability can be enhanced, and the efficiency of the whole machine can be improved and the power consumption can be reduced.

[0063] In some embodiments, the battery module is built into the second medium-temperature evaporator 20 or the second medium-temperature evaporator is built into the battery module, and / or the motor electronic control module is built into the third medium-temperature evaporator 21 or the third medium-temperature evaporator is built into the motor and electronic control module, or a refrigerant and coolant heat exchanger is used to replace cooling water, and the motor electronic control is thermally managed through cooling water circulation. In other words, the medium-temperature evaporator for battery thermal management (i.e., the second medium-temperature evaporator 20, which is also a heat exchanger) and the medium-temperature evaporator for motor electronic control thermal management (i.e., the third medium-temperature evaporator 21, which is also a heat exchanger) are direct cooling and heating types, with built-in battery modules and motor electronic control modules, and the battery module and motor electronic control module are thermally managed in the form of phase change absorption, heat release + heat conduction.

[0064] In the thermal management of the motor electronic control module, indirect cooling can be used, such as Figure 2 As shown, the medium temperature heat exchanger for thermal management of the motor 28 and the electronic control 27 uses a refrigerant and a coolant heat exchanger 24, which forms a circulation loop with the coolant heat exchanger 24, a circulating water pump 26 and a three-way valve 29, and thermal management of the motor and the electronic control is performed through the circulation of cooling water; the three-way valve 29 can also be adjusted, the fourth throttle valve is closed, and the water-cooled radiator 25, the circulating water pump 26, and the three-way valve 29 form a circulation loop, and the natural cold source is used to perform thermal management of the motor and the electronic control. It should be understood that Figure 2 The embodiment shown and Figure 1 The other parts of the illustrated embodiment are the same and will not be described in detail here.

[0065] Based on the above thermal management system, its control mode includes the following combination modes:

[0066] (1) Direct battery cooling and / or motor electronic control cooling in air conditioning cooling mode;

[0067] (2) Direct battery cooling and / or motor electronic control cooling in air conditioning heating mode;

[0068] (3) Direct battery heating and / or electronically controlled motor cooling in air conditioning heating mode;

[0069] (4) Direct battery heating and / or motor electronic control cooling in non-air conditioning mode;

[0070] (5) Direct battery cooling and / or motor electronic control cooling in non-air conditioning mode;

[0071] (6) Air conditioning heating mode only;

[0072] (7) Air conditioning cooling mode only;

[0073] (8) Single air conditioning mode to increase air flow and enthalpy for heating.

[0074] Combine the following Figure 1 The pipeline conduction structure in each mode is described in detail.

[0075] In some embodiments, when the thermal management system is in the air conditioning cooling mode, the battery direct cooling and / or the motor and electronic control cooling mode, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet D, the outlet B and the outlet C of the reversing valve 15 are connected, and the refrigerant is divided into four branches after passing through the outlet of the condenser 16; among them, the first cooling branch includes the first throttle valve 1, the low-temperature evaporator 18, the fifth switch valve 5, the outlet B of the reversing valve 15, the outlet C of the reversing valve 15 and the low-pressure suction port of the compressor 17 in the conducting direction; the second The cooling branch includes the second throttle valve 2, the first medium-temperature evaporator 19 and the seventh switch valve 7 in sequence along the conduction direction; the third cooling branch includes the third throttle valve 3 and the second medium-temperature evaporator 20 in sequence along the conduction direction; the fourth cooling branch includes the fourth throttle valve 4, the third medium-temperature evaporator 21 and the ninth switch valve 9 in sequence along the conduction direction; after the second cooling branch, the third cooling branch and the fourth cooling branch merge, they enter the intermediate suction chamber of the compressor 17 through the eighth switch valve 8; the switching of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

[0076] That is to say, in the battery direct cooling and / or motor cooling mode under the air conditioning refrigeration mode, the refrigerant is divided into four paths from the outlet of the compressor 17, passes through the inlet A of the reversing valve 15, the outlet D of the reversing valve 15 and the condenser 16 in sequence, and the first path passes through the first throttle valve 1, the low-temperature evaporator 18, the fifth switch valve 5, the outlet B of the reversing valve 15 and the outlet C of the reversing valve 15 in sequence, and then enters the low-pressure suction port of the compressor 17; the second path passes through the second throttle valve 2, the medium-temperature evaporator and the seventh switch valve 7 in sequence; the third path passes through the third throttle valve 3 and the battery thermal management medium-temperature heat exchanger (i.e., the second medium-temperature evaporator 20) in sequence; the fourth path passes through the fourth throttle valve 4, the motor electronic thermal management medium-temperature evaporator (i.e., the third medium-temperature evaporator 21) and the ninth switch valve 9 in sequence; the second path, the third path and the fourth path merge and enter the intermediate suction chamber of the compressor 17 through the eighth switch valve 8; in this process, the switch control of the third throttle valve 3 and the fourth throttle valve 4 is ANDed or ORed, and the switch valve opening controls the conduction of the circuit in which it is located.

[0077] In some embodiments, when the thermal management system is in the air conditioning heating mode, the battery direct cooling and / or the motor electronic control cooling mode, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet B, and the outlet C of the reversing valve 15 is connected to the outlet D; when the air conditioning heating demand is large, and the battery and / or the motor electronic control cooling demand is also large, the main line includes the inlet A of the reversing valve, the outlet B of the reversing valve, the low-temperature evaporator, and / or the first medium-temperature evaporator in the conducting direction; the main line is connected to the low-temperature evaporator and / or the first medium-temperature evaporator. After the medium-temperature evaporator, it is divided into three branches, among which the first branch includes the third throttle valve and the second medium-temperature evaporator in sequence along the conduction direction; the second branch includes the fourth throttle valve, the third medium-temperature evaporator and the ninth switch valve in sequence along the conduction direction; the third branch includes the condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conduction direction; after the first branch and the second branch are merged, they pass through the eighth switch valve into the middle cavity of the compressor; the switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

[0078] When the air conditioning heating demand is large and the battery cooling and / or the motor and electronic control cooling demand is small, the first throttle valve and / or the second throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch and the second branch after the eighth switch valve and enters the middle cavity of the compressor;

[0079] When the air conditioning heating demand is small, and the battery cooling and / or motor electronic control cooling demand is large, the main line includes the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator respectively, and then passes through the third throttle valve and the second medium-temperature evaporator and / or the fourth throttle valve and the third medium-temperature evaporator respectively, merges with the ninth switch valve, passes through the tenth switch valve, the eleventh switch valve, the reversing valve D port and the reversing valve C port, and reaches the low-pressure suction port of the compressor;

[0080] When the air conditioning heating demand is small, and the battery cooling and motor electronic control cooling demand are also small, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, reduce the heat release of the condenser to the external environment, and at the same time the compressor runs at a reduced frequency.

[0081] It should be understood that when the ambient temperature is low, the amount of heating required from the air conditioner is large, and at this time the demand for air conditioning heating is large; when the battery, motor, and electronic control generate a lot of heat when running at high speed, a large amount of cold energy is required for cooling, and at this time the demand for cooling of the battery, motor, and electronic control is large; when the battery, motor, and electronic control generate little heat when running at low speed, the amount of cold energy required for cooling is small. For example, when the air conditioner is turned on for heating in winter, the ambient temperature is lower than the predetermined temperature, such as 0°C, and the battery, motor, and electronic control are running at high speed, the heating amount demand of the air conditioner is large, and the cooling amount demand of the battery, motor, and electronic control is also large; when the air conditioner is turned on for heating in winter, the ambient temperature is lower than the predetermined temperature, such as 0°C, and the battery, motor, and electronic control are running at low speed, the heating amount demand of the air conditioner is large, and the cooling amount demand of the battery, motor, and electronic control is small.

[0082] On the contrary, when the ambient temperature is high, the air conditioner needs to provide a small amount of heating, and the air conditioner heating demand is small at this time; when the battery, motor, and electronic control generate a lot of heat when running at high speed, a large amount of cold energy is required to cool them, and the battery, motor, and electronic control cooling demand is large at this time; when the battery, motor, and electronic control generate a little heat when running at low speed, the amount of cold energy required for cooling is small, for example, when the air conditioner is turned on for heating in winter, the ambient temperature is higher than the predetermined temperature, such as 0℃, and the battery, motor, and electronic control are running at high speed, the air conditioner heating demand is small, and the battery, motor, and electronic control cooling demand is large; when the air conditioner is turned on for heating in winter, the ambient temperature is higher than the predetermined temperature, such as 0℃, and the battery, motor, and electronic control are running at low speed, the air conditioner heating demand is small, and the battery, motor, and electronic control cooling demand is also small.

[0083] It should be pointed out that limiting the demand for air-conditioning heating, battery cooling and motor electronic control cooling is to seek a balance between the heating and cooling capacity of the thermal management system. The unbalanced part is balanced by the heat exchanger outside the vehicle, namely the condenser 16, which is switched to the evaporator to absorb heat, or switched to the condenser to release heat, so as to balance the heat demand between the air-conditioning system and the three-electric system.

[0084] In some embodiments, when the thermal management system is in air conditioning heating mode, direct battery heating and / or motor electronic control cooling, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet B, and the outlet C of the reversing valve 15 is connected to the outlet D;

[0085] When the sum of the heating requirements of the air conditioner and the battery is large, and the motor electronic control cooling requirement is also large, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the fifth switch valve and / or the sixth switch valve, the seventh switch valve, the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator in parallel in the conducting direction;

[0086] The main line is divided into two branches after the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator connected in parallel; wherein the first branch includes the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve and the middle cavity of the compressor in the conducting direction; the second branch includes the flasher, the condenser, the fifteenth throttle valve, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure air intake of the compressor in the conducting direction;

[0087] The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct heating of the battery and / or the motor and electronically controlled cooling mode;

[0088] When the sum of the heating requirements of the air conditioner and the battery is large, and the cooling requirements of the motor and the electronic control are small, the first throttle valve and / or the second throttle valve and / or the third throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch after the tenth switch valve and enters the middle cavity of the compressor;

[0089] When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling requirement is large, the main pipeline includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, respectively passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator, the second medium-temperature evaporator, and after merging, passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the D port of the reversing valve, the C port of the reversing valve, and returns to the low-pressure suction port of the compressor;

[0090] When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling requirement is also small, under the premise of ensuring the heating of the battery, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, thereby reducing the heat release of the condenser to the external environment, and at the same time, the compressor runs at a reduced frequency.

[0091] That is to say, in the air-conditioning heating mode, in the direct battery heating and / or motor electronic control cooling mode, the refrigerant flows from the outlet of the compressor 17 through the inlet A and outlet B of the reversing valve 15, opens the fifth switch valve 5, the sixth switch valve 6 and the seventh switch valve 7, and passes through the low-temperature evaporator 18, the first throttle valve 1 and the medium-temperature evaporator, the second throttle valve 2 and the medium-temperature heat exchanger for battery thermal management in parallel, and then passes through the fourth throttle valve 4, the medium-temperature heat exchanger for motor electronic control thermal management, and the tenth switch valve 10 to enter the middle cavity of the compressor 17, and passes through the condenser 16, the outlet D of the reversing valve 15, and the outlet C of the reversing valve 15 to return to the low-pressure intake port of the compressor 17.

[0092] In some embodiments, when the thermal management system is in the air conditioning off mode, direct battery heating and / or motor electronic control cooling, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet B, and the outlet C and outlet D of the reversing valve 15 are connected; when the heating amount required by the battery is greater than or equal to the cooling amount required by the motor electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve in the conduction direction; the main line is divided into two branches after the third throttling, among which the first branch includes the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve and the eleventh switch valve in the conduction direction; the second branch merges with the first branch after passing through the flasher and the condenser, and enters the low-pressure intake port of the compressor through the outlet D and outlet C of the reversing valve.

[0093] When the heating amount required by the battery is less than the cooling amount required by the motor and electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conduction direction, and then is divided into two branches, wherein the first branch passes through the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve; the second branch passes through the fourteenth switch valve, the condenser, and the flasher, and merges with the first branch after the third throttle valve, passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the outlet D and the outlet C of the reversing valve to enter the low-pressure suction port of the compressor; the switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct heating mode of the battery and / or the cooling mode of the motor and electronic control.

[0094] That is to say, in the mode of direct battery heating and / or motor electronic control cooling without air conditioning, the refrigerant passes through the inlet A and outlet B of the reversing valve 15 from the outlet of the compressor 17, opens the sixth switch valve 6 and the seventh switch valve 7, and enters the medium-temperature heat exchanger for battery thermal management (heat release) after passing through the sixth switch valve 6 and the seventh switch valve 7, and is divided into two paths through the third throttle valve 3 (throttling). The first path passes through the fourth throttle valve 4 (fully open), the medium-temperature heat exchanger for motor electronic control thermal management, the tenth switch valve 10 and the eleventh switch valve 11, and merges with the other path after passing through the condenser 16, and returns to the low-pressure air intake port of the compressor 17 after passing through the outlet D and outlet C of the reversing valve 15. At this time, the whole system is controlled to maintain a high-temperature evaporation state. It should be understood that after starting, the battery needs to be heated up first. When the motor does not need to be cooled, the refrigerant can go directly to the condenser 16 below. The situation where only the motor needs to be cooled is not included in this case.

[0095] In some embodiments, when the thermal management system is in the air conditioning off mode, direct battery cooling and / or electronic motor cooling, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet D, and the outlet B and outlet C of the reversing valve 15 are connected; the main line includes the compressor, the inlet A of the reversing valve, the outlet D of the reversing valve and the condenser in the conducting direction; after the condenser, it is divided into two parallel branches, and the two branches respectively include the third throttle valve, the second medium-temperature evaporator and the fourth throttle valve, the third medium-temperature evaporator, and after merging, they pass through the seventh switch valve, the sixth switch valve, the outlet B of the reversing valve and the outlet C of the reversing valve in turn to return to the low-pressure suction port of the compressor; the switching of the third throttle valve and / or the fourth throttle valve controls the switching of the direct battery cooling and / or motor and electronic control cooling mode.

[0096] That is to say, in the mode of direct battery cooling and / or electronic motor cooling without air conditioning, the refrigerant is divided into two paths from the outlet of the compressor 17 through the inlet A, outlet D of the reversing valve 15 and the condenser 16. The two paths pass through the third throttle valve 3 and the fourth throttle valve 4 in parallel respectively, and the ninth switch valve 9 is opened. After merging, they pass through the seventh switch valve 7, the sixth switch valve 6, the outlet B of the reversing valve 15 and the outlet C of the reversing valve 15 and return to the low-pressure intake port of the compressor 17; the switch control of the third throttle valve 3 and the fourth throttle valve 4 and / or the control of the entire system to maintain a high-temperature evaporation state at this time.

[0097] In some embodiments, when the thermal management system is in the air conditioning heating mode, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet B, and the outlet C and outlet D of the reversing valve 15 are connected; the main line includes the compressor 17, the inlet A of the reversing valve 15, the outlet B of the reversing valve 15, the fifth switch valve 5 and the sixth switch valve 6 in parallel, the low-temperature evaporator 18 and the first medium-temperature evaporator 19 in parallel along the conduction direction, and then enters the condenser 16 after merging, and returns to the low-pressure suction port of the compressor 17 through the outlet D and outlet C of the reversing valve 15.

[0098] That is to say, in the single air conditioning heating mode, the outlet of the compressor 17 passes through the inlet A and outlet B of the reversing valve 15, passes through the fifth switch valve 5 and the sixth switch valve 6 in parallel, passes through the low-temperature evaporator 18 and the first medium-temperature evaporator 19 respectively, and then enters the condenser 16 through the outlet D and outlet C of the reversing valve 15 and returns to the low-pressure suction port of the compressor 17.

[0099] In some embodiments, when the thermal management system is in the air-conditioning cooling mode, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet D, and the outlet C and outlet B of the reversing valve 15 are connected; the main cooling pipeline includes the compressor 17, the inlet A of the reversing valve 15, the outlet D of the reversing valve 15 and the condenser 16 in the conducting direction; after the condenser 16, it is divided into two parallel branches, wherein the first branch includes the first throttle valve 1, the low-temperature evaporator 18, the fifth switch valve 5, the outlet B of the reversing valve 15, the outlet C of the reversing valve 15 and the low-pressure suction port of the compressor 17 in the conducting direction; the second branch includes the second throttle valve 2, the first medium-temperature evaporator 19, the seventh switch valve 7, the eighth switch valve 8 and the middle cavity of the compressor 17 in the conducting direction.

[0100] That is to say, in the single-open air conditioning refrigeration mode, the outlet of the compressor 17 passes through the inlet A of the reversing valve 15, the outlet D of the reversing valve 15 and the condenser 16, and then passes through the first throttle valve 1 and the second throttle valve 2 in parallel, and enters the first medium-temperature evaporator 19 and the low-temperature evaporator 18 in parallel respectively. One path passes through the first medium-temperature evaporator 19, passes through the seventh switch valve 7 and the eighth switch valve 8, and enters the middle cavity of the compressor 17, and the other path passes through the fifth switch valve 5, the outlet B of the reversing valve 15 and the outlet C of the reversing valve 15 and returns to the low-pressure suction port of the compressor 17.

[0101] In some embodiments, when the thermal management system is in the air conditioning air replenishment enthalpy increase mode, the compressor 17 is connected to the inlet A of the reversing valve 15, the inlet A of the reversing valve 15 is connected to the outlet B, and the outlet C and outlet D of the reversing valve 15 are connected; the main line includes the compressor 17, the inlet A of the reversing valve 15 and the outlet B of the reversing valve 15 in sequence along the conducting direction; after the outlet B of the reversing valve 15, it is divided into two parallel branches; wherein, the first branch includes the fifth switch valve and the sixth switch valve in parallel and at least one of them is conducting, the low-temperature evaporator and the first medium-temperature evaporator in parallel and at least one of them is conducting, the first throttle valve and the second throttle valve in parallel and at least one of them is conducting, and merges into the flasher, and then is divided into two branches, one of which is connected to the middle cavity of the compressor through the thirteenth switch valve; the other branch includes the flasher outlet condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conducting direction.

[0102] That is to say, in the single air conditioning air replenishment and enthalpy increase mode, the outlet of the compressor 17 passes through the inlet A and outlet B of the reversing valve 15, passes through the parallel fifth switch valve 5 and the sixth switch valve 6 (or one of them), passes through the corresponding low-temperature evaporator 18 and the first medium-temperature evaporator 19 respectively, and then enters the flasher 12 after throttling through the corresponding first throttle valve 1 and / or the second throttle valve 2, and then passes through the thirteenth switch valve 13 to merge with the middle cavity of the compressor 17, and the other way passes through the twelfth throttle valve 14, the condenser 16, the outlet D of the reversing valve 15 and the outlet C of the reversing valve 15 to return to the low-pressure suction port of the compressor 17.

[0103] It should be understood that the above-mentioned switch valves can be solenoid valves, electronic expansion valves, one-way valves and other valve bodies capable of realizing switch functions, and the throttle valves are all adjustable throttle valves.

[0104] It is to be understood that the same or similar parts in the above-mentioned embodiments can refer to each other, and the content not described in detail in some embodiments can refer to the same or similar content in other embodiments. It should be noted that in the description of the present application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" refers to at least two.

[0105] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0106] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal management system based on independent regulation of temperature and humidity, the thermal management system comprising an air conditioning system, a battery thermal management module, and a motor and electronic control thermal management module, characterized in that: The thermal management system also includes: A compressor, wherein the compressor is a two-stage compressor with an intermediate cavity; An evaporator group, the evaporator group comprising a low-temperature evaporator, a first medium-temperature evaporator, a second medium-temperature evaporator and a third medium-temperature evaporator arranged in parallel; a reversing valve, under the action of which the thermal management system switches between a plurality of thermal regulation modes; Among them, the first medium-temperature evaporator and the sensible heat regulation system of the air-conditioning system constitute a first temperature control circuit, and the first medium-temperature evaporator is used for air-conditioning sensible heat regulation; the second medium-temperature evaporator and the battery thermal management module constitute a second temperature control circuit, and the second medium-temperature evaporator is used for battery module temperature regulation; the third medium-temperature evaporator and the motor and electronic control thermal management module constitute a third temperature control circuit, and the third medium-temperature evaporator is used for motor electronic control module temperature regulation; the low-temperature evaporator and the latent heat regulation system of the air-conditioning system constitute a humidity control circuit.

2. The thermal management system based on independent regulation of temperature and humidity according to claim 1, characterized in that: The battery module is built into the second medium-temperature evaporator or the second medium-temperature evaporator is built into the battery module, and / or the motor and electronic control module is built into the third medium-temperature evaporator or the third medium-temperature evaporator is built into the motor and electronic control module, or a refrigerant and coolant heat exchanger is used as the third medium-temperature evaporator, and the motor and electronic control module is thermally managed by circulating cooling water.

3. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in air conditioning cooling mode, direct battery cooling and / or motor and electronic control cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, the outlet B of the reversing valve is connected to the outlet C, and the refrigerant is divided into four branches after passing through the condenser outlet; The first cooling branch includes the first throttle valve, the low-temperature evaporator, the fifth switch valve, the outlet B of the reversing valve, the outlet C of the reversing valve and the low-pressure air intake of the compressor in the conducting direction; The second cooling branch includes a second throttle valve, a first medium-temperature evaporator and a seventh switch valve in sequence along the conducting direction; The third cooling branch includes a third throttle valve and a second medium-temperature evaporator in sequence along the conducting direction; The fourth cooling branch includes a fourth throttle valve, a third medium-temperature evaporator and a ninth switch valve in sequence along the conducting direction; After the second cooling branch, the third cooling branch and the fourth cooling branch are merged, they enter the middle suction cavity of the compressor through the eighth switch valve; The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

4. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning heating mode, the battery direct cooling mode and / or the motor electronic control cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D; When the air conditioning heating demand is large, and the battery and / or motor electronic control cooling demand is also large, the main line includes the inlet A of the reversing valve, the outlet B of the reversing valve, the low-temperature evaporator, and / or the first medium-temperature evaporator in the conducting direction; The main line is divided into three branches after the low-temperature evaporator and / or the first medium-temperature evaporator, wherein the first branch includes the third throttle valve and the second medium-temperature evaporator in sequence along the conducting direction; the second branch includes the fourth throttle valve, the third medium-temperature evaporator and the ninth switch valve in sequence along the conducting direction; the third branch includes the condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conducting direction; The first branch and the second branch merge and then pass through the eighth switch valve into the middle chamber of the compressor; The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the battery direct cooling and / or the motor and electronic control cooling mode; When the air conditioning heating demand is large and the battery cooling and / or the motor and electronic control cooling demand is small, the first throttle valve and / or the second throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch and the second branch after the eighth switch valve and enters the middle cavity of the compressor; When the air conditioning heating demand is small, and the battery cooling and / or motor electronic control cooling demand is large, the main line includes the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator respectively, and then passes through the third throttle valve and the second medium-temperature evaporator and / or the fourth throttle valve and the third medium-temperature evaporator respectively after merging, passes through the tenth switch valve, the eleventh switch valve, the reversing valve D port and the reversing valve C port after merging through the ninth switch valve, and reaches the low-pressure suction port of the compressor; When the air conditioning heating demand is small, and the battery cooling and motor electronic control cooling demand are also small, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, reduce the heat release of the condenser to the external environment, and at the same time the compressor runs at a reduced frequency.

5. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning heating mode, direct battery heating and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D; When the sum of the heating requirements of the air conditioner and the battery is large, and the motor electronic control cooling requirement is also large, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the fifth switch valve and / or the sixth switch valve, the seventh switch valve, the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator in parallel in the conducting direction; The main line is divided into two branches after the low-temperature evaporator, the first medium-temperature evaporator and the second medium-temperature evaporator connected in parallel; wherein the first branch includes the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve and the middle cavity of the compressor in the conducting direction; the second branch includes the flasher, the condenser, the fifteenth throttle valve, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure air intake of the compressor in the conducting direction; The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the battery direct heating and / or the motor and electronically controlled cooling modes; When the sum of the heating requirements of the air conditioner and the battery is large, and the cooling requirements of the motor and the electronic control are small, the first throttle valve and / or the second throttle valve and / or the third throttle valve are adjusted, and the thirteenth switch valve is opened, so that a part of the refrigerant merges with the first branch after the tenth switch valve and enters the middle cavity of the compressor; When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling requirement is large, the main pipeline includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, respectively passes through the condenser, the low-temperature evaporator and / or the first medium-temperature evaporator, the second medium-temperature evaporator, and after merging, passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the D port of the reversing valve, the C port of the reversing valve, and returns to the low-pressure suction port of the compressor; When the sum of the heating requirements of the air conditioner and the battery is small, and the motor electronic control cooling demand is also small, under the premise of ensuring the heating of the battery, adjust the twelfth throttle valve to control and reduce the amount of refrigerant flowing through the condenser, thereby reducing the heat release of the condenser to the external environment, and at the same time the compressor runs at a reduced frequency.

6. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning off mode, direct battery heating and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D; When the heating amount required by the battery is greater than or equal to the cooling amount required by the motor electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve in the conducting direction; The main line is divided into two branches after the third throttling, wherein the first branch includes the fourth throttling valve, the third medium-temperature evaporator, the tenth switch valve and the eleventh switch valve in the conducting direction; the second branch passes through the flasher and the condenser and merges with the first branch, and enters the low-pressure suction port of the compressor through the outlet D and outlet C of the reversing valve; When the heating amount required by the battery is less than the cooling amount required by the motor electronic control, the main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve in the conducting direction, and then is divided into two branches, wherein the first branch passes through the sixth switch valve, the seventh switch valve, the second medium-temperature evaporator and the third throttle valve; The second branch passes through the fourteenth switch valve, the condenser, and the flasher, and merges with the first branch after the third throttle valve, and passes through the fourth throttle valve, the third medium-temperature evaporator, the tenth switch valve, the eleventh switch valve, the outlet D and the outlet C of the reversing valve to enter the low-pressure suction port of the compressor; The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct heating of the battery and / or the motor and electronically controlled cooling mode.

7. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning off mode, direct battery cooling and / or motor electronic control cooling, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, and the outlet B of the reversing valve is connected to the outlet C; The main line includes the compressor, the inlet A of the reversing valve, the outlet D of the reversing valve and the condenser in the conducting direction; after the condenser, it is divided into two parallel branches, and the two branches respectively include the third throttle valve, the second medium-temperature evaporator and the fourth throttle valve, the third medium-temperature evaporator, and after merging, they pass through the seventh switch valve, the sixth switch valve, the outlet B of the reversing valve and the outlet C of the reversing valve in turn to return to the low-pressure suction port of the compressor; The switch of the third throttle valve and / or the fourth throttle valve controls the switching of the direct cooling of the battery and / or the motor and electronic control cooling mode.

8. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning heating mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D; The main line includes the compressor, the inlet A of the reversing valve, the outlet B of the reversing valve, the fifth switch valve and the sixth switch valve in parallel, the low-temperature evaporator and the first medium-temperature evaporator in parallel in the conducting direction. After merging, it enters the condenser and returns to the low-pressure suction port of the compressor through the outlet D and the outlet C of the reversing valve.

9. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning cooling mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet D, and the outlet C of the reversing valve is connected to the outlet B; The main line includes the compressor, the inlet A of the reversing valve, the outlet D of the reversing valve and the condenser in sequence along the conduction direction; it is divided into two parallel branches after the condenser, wherein the first branch includes the first throttle valve, the low-temperature evaporator, the fifth switch valve, the outlet B of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in sequence along the conduction direction; the second branch includes the second throttle valve, the first medium-temperature evaporator, the seventh switch valve, the eighth switch valve and the middle cavity of the compressor in sequence along the conduction direction.

10. The thermal management system based on independent regulation of temperature and humidity according to claim 1 or 2, characterized in that: When the thermal management system is in the air conditioning air supply enthalpy increase mode, the compressor is connected to the inlet A of the reversing valve, the inlet A of the reversing valve is connected to the outlet B, and the outlet C of the reversing valve is connected to the outlet D; The main line includes the compressor, the inlet A of the reversing valve and the outlet B of the reversing valve in sequence along the conducting direction; after the outlet B of the reversing valve, it is divided into two parallel branches; The first branch includes, in the conducting direction, a fifth switch valve and a sixth switch valve connected in parallel and at least one of them is conducting, a low-temperature evaporator and a first medium-temperature evaporator connected in parallel and at least one of them is conducting, a first throttle valve and a second throttle valve connected in parallel and at least one of them is conducting, and then merges into the flasher, and then is divided into two branches, one of which is connected to the middle chamber of the compressor through the thirteenth switch valve; The other branch includes the flasher, the twelfth throttle valve, the condenser, the outlet D of the reversing valve, the outlet C of the reversing valve and the low-pressure suction port of the compressor in the conducting direction.

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