Minimalistic thermal management system for electric vehicle and control method therefor, and electric vehicle

Abstract

A minimalistic thermal management system for an electric vehicle and a control method therefor, and an electric vehicle. The minimalistic thermal management system comprises: a refrigerant loop in which an electric compressor (1), a water-cooled condenser (2), a liquid storage and drying tank (3), a first throttling device (4), a second throttling device (5), a battery cooler (6), and an in-vehicle evaporator (8) are provided; a passenger compartment loop in which an in-vehicle heater core body (9), a first electronic water pump (13), a water heater (14), and a high-temperature heat exchanger (16) are provided; an electric drive and electric control loop in which a second electronic water pump (17), a low-temperature heat exchanger (18), and an electric drive and electric control assembly (22) are provided; a battery loop in which a third electronic water pump (19) and a battery assembly (20) are provided; and a control piping system in which a three-way valve (15) and a ten-way valve (12) are provided. The refrigerant loop, the passenger compartment loop, the electric drive and electric control loop, and the battery loop are mutually coupled by means of the three-way valve (15) and the ten-way valve (12) to form a minimalistic thermal management system for an electric vehicle so as to provide corresponding thermal management modes when the ten-way valve (12) is in different working states. The endurance of the whole vehicle is guaranteed, the thermal management requirements are satisfied, and the number of thermal management parts of an engine compartment and the amount of piping is reduced, thereby facilitating arrangement and attractiveness of the engine compartment.

Description

Electric vehicle minimalist thermal management system, control method thereof, and electric vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202310919195.9, filed on July 25, 2023, entitled “Electric Vehicle Minimalist Thermal Management System, Control Method Thereof, and Electric Vehicle,” the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present application relates to the field of thermal management of electric vehicles, and in particular to a minimalist thermal management system for electric vehicles, a control method thereof, and an electric vehicle. Background Art

[0004] With the development of electric vehicles and the improvement of people's living standards, the requirements for thermal management of electric vehicles are becoming increasingly higher. The thermal management objects of pure electric vehicles are much more complex than those of traditional fuel vehicles, including the passenger compartment, battery assembly, electric drive and electronic control assembly, high-power electrical components, etc. The thermal management of electric vehicles needs to comprehensively consider the impact of the vehicle's range, as well as the thermal management needs of different seasons such as high temperature conditions in summer, dehumidification conditions in spring and autumn, and low temperature conditions in winter. The requirements for coupling electric drive and electronic control, batteries and environmental heat are also becoming increasingly higher. In addition, because most thermal management circuits or thermal management systems in existing technologies are arranged in the front cabin of the car where space is easily limited, the routing of thermal management components and pipelines is relatively complex, the installation location is unsightly, and after-sales maintenance is difficult, affecting the car user experience.

[0005] Therefore, there is an urgent need in the prior art for a minimalist thermal management system, a control method thereof, and an electric vehicle that can both ensure thermal management requirements and energy efficiency while reducing the number of front cabin thermal management components and pipelines.

[0006] Summary of the Invention

[0007] In order to solve the problems existing in the prior art such as the difficulty in front cabin layout, complex and unsightly pipeline routing, and difficulty in after-sales maintenance, the present application proposes a minimalist thermal management system for electric vehicles, a control method thereof, and an electric vehicle, which can ensure the endurance of the entire vehicle, meet thermal management requirements, and reduce the number of thermal management components and pipelines in the front cabin, which is more conducive to the layout and aesthetics of the front cabin.

[0008] In a first aspect, the present application provides a simplified thermal management system for an electric vehicle, comprising:

[0009] The refrigerant circuit is equipped with an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator;

[0010] The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger;

[0011] The electric drive and electronic control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electronic control assembly;

[0012] Battery circuit, equipped with a third electronic water pump and battery assembly;

[0013] The control piping system is equipped with a three-way valve and a ten-way valve;

[0014] The three-way valve and the ten-way valve couple the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit to form a minimalist thermal management system for the electric vehicle to provide corresponding thermal management modes when the ten-way valve is in different working states.

[0015] In one embodiment of the present invention, the three-way valve has a first port, a second port, and a third port;

[0016] The first interface of the three-way valve is connected to the in-vehicle heater core, the second interface of the three-way valve is connected to the water heater, and the third interface of the three-way valve is connected to the high-temperature heat exchanger and the ten-way valve.

[0017] In one embodiment of the present invention, the ten-way valve has a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port and a tenth port;

[0018] The first interface of the ten-way valve is connected to the battery cooler, the second interface of the ten-way valve is connected to the battery cooler, the third interface of the ten-way valve is connected to the junction of the inlet of the first electronic water pump and the outlet of the in-vehicle heater core; the fourth interface of the ten-way valve is connected to the junction of the third interface of the three-way valve and the inlet of the high-temperature heat exchanger; the fifth interface of the ten-way valve is connected to the high-temperature heat exchanger, the sixth interface of the ten-way valve is connected to the second electronic water pump, the seventh interface of the ten-way valve is connected to the junction of the outlet of the electric drive and electronic control assembly and the inlet of the low-temperature heat exchanger, the eighth interface of the ten-way valve is connected to the low-temperature heat exchanger, the ninth interface of the ten-way valve is connected to the third electronic water pump, and the tenth interface of the ten-way valve is connected to the battery assembly.

[0019] In one embodiment of the present invention, when the ten-way valve is in working state a, a corresponding first minimalist thermal management mode is provided;

[0020] The circuit performance of the first minimalist thermal management mode includes:

[0021] The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths: one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor;

[0022] The coolant flowing out of the water-cooled condenser passes through the water heater, the second port of the three-way valve, the first port of the three-way valve, the high-temperature heat exchanger, the fifth port of the ten-way valve, the third port of the ten-way valve, and the first electronic water pump and flows back to the water-cooled condenser;

[0023] The coolant flowing out of the battery cooler flows back to the battery cooler through the first port of the ten-way valve, the ninth port of the ten-way valve, the third electronic water pump, the battery assembly, the tenth port of the ten-way valve, and the second port of the ten-way valve;

[0024] The coolant flowing out of the electric drive and electronic control assembly passes through the low-temperature heat exchanger, the 8th interface of the ten-way valve, the 6th interface of the ten-way valve, and the second electronic water pump and flows back to the electric drive and electronic control assembly.

[0025] In one embodiment of the present invention, when the temperature of the battery cells in the battery assembly is lower than the cooling threshold, the second throttling device is closed; the refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the first throttling device, and the in-vehicle evaporator.

[0026] In one embodiment of the present invention, the circuit expression of the first minimalist thermal management mode further includes:

[0027] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the first throttling device, and the in-vehicle evaporator;

[0028] The coolant flowing out of the water-cooled condenser is divided into two paths after passing through the water heater. One path flows through the second port of the three-way valve, the first port of the three-way valve, the high-temperature heat exchanger, the fifth port of the ten-way valve, and the third port of the ten-way valve; the other path flows through the in-vehicle heater core and merges with the coolant flowing out through the third port of the ten-way valve, and flows back to the water-cooled condenser through the first electronic water pump.

[0029] The coolant flowing out of the electric drive and electronic control assembly passes through the low-temperature heat exchanger, the 8th interface of the ten-way valve, the 6th interface of the ten-way valve, and the second electronic water pump and flows back to the electric drive and electronic control assembly.

[0030] In one embodiment of the present invention, the air outlet temperature of the in-vehicle heater core is controlled by the opening of the three-way valve; when the in-vehicle air outlet temperature is within a first required range, more coolant in the three-way valve is controlled to flow through the high-temperature heat exchanger for heat dissipation; when the in-vehicle air outlet temperature is within a second required range, more coolant in the three-way valve is controlled to flow through the in-vehicle heater core for heat dissipation.

[0031] In one embodiment of the present invention, if there is a need for cooling the battery, the refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths, one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor.

[0032] In one embodiment of the present invention, when the ten-way valve is in working state b, a corresponding second minimalist thermal management mode is provided;

[0033] The circuit performance of the second minimalist thermal management mode includes:

[0034] The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths: one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor;

[0035] The coolant flowing out of the water-cooled condenser passes through the water heater, the second interface of the three-way valve, the third interface of the three-way valve, the high-temperature heat exchanger, the fifth interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the low-temperature heat exchanger, the eighth interface of the ten-way valve, the third interface of the ten-way valve, and the first electronic water pump and flows back to the water-cooled condenser;

[0036] The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve.

[0037] In one embodiment of the present invention, when the temperature of the battery cells in the battery assembly is lower than the cooling threshold, the second throttling device is closed; the refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the first throttling device, and the in-vehicle evaporator.

[0038] In one embodiment of the present invention, when the ten-way valve is in working state c, a corresponding third minimalist thermal management mode is provided;

[0039] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the first throttling device, and the in-vehicle evaporator;

[0040] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0041] The coolant flowing out of the battery cooler passes through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the low-temperature heat exchanger, the eighth interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve, and flows back to the battery cooler.

[0042] In one embodiment of the present invention, when the ten-way valve is in working state d, a corresponding fourth minimalist thermal management mode is provided;

[0043] The fourth minimalist thermal management mode includes the following circuit expressions:

[0044] The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths: one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor;

[0045] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0046] The coolant flowing out of the battery cooler flows back to the battery cooler through the first port of the ten-way valve, the fourth port of the ten-way valve, the high-temperature heat exchanger, the fifth port of the ten-way valve, the sixth port of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh port of the ten-way valve, and the second port of the ten-way valve;

[0047] The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

[0048] In one embodiment of the present invention, the circuit expression of the fourth minimalist thermal management mode further includes:

[0049] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler;

[0050] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0051] The coolant flowing out of the battery cooler flows back to the battery cooler through the first port of the ten-way valve, the fourth port of the ten-way valve, the high-temperature heat exchanger, the fifth port of the ten-way valve, the sixth port of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh port of the ten-way valve, and the second port of the ten-way valve;

[0052] The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

[0053] In one embodiment of the present invention, when the ten-way valve is in working state e, a corresponding fifth minimalist thermal management mode is provided;

[0054] The fifth minimalist thermal management mode circuit performance includes:

[0055] The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths: one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor;

[0056] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0057] The coolant flowing out of the battery cooler flows back to the battery cooler through the first port of the ten-way valve, the sixth port of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh port of the ten-way valve, and the second port of the ten-way valve;

[0058] The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

[0059] In one embodiment of the present invention, the circuit expression of the fifth minimalist thermal management mode further includes:

[0060] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler;

[0061] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0062] The coolant flowing out of the battery cooler flows back to the battery cooler through the first port of the ten-way valve, the sixth port of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh port of the ten-way valve, and the second port of the ten-way valve;

[0063] The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

[0064] In one embodiment of the present invention, when the ten-way valve is in working state f, a corresponding sixth minimalist thermal management mode is provided;

[0065] The sixth simplified thermal management mode includes the following circuit expressions:

[0066] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler;

[0067] The coolant flowing out of the water-cooled condenser is divided into two paths after passing through the water heater. One path flows through the second interface of the three-way valve, the third interface of the three-way valve, the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the third interface of the ten-way valve; the other path flows through the second interface of the three-way valve, the first interface of the three-way valve, and the in-vehicle heater core. The coolant flowing out through the third interface of the ten-way valve and the coolant flowing out through the in-vehicle heater core are combined and flow back to the water-cooled condenser through the first electronic water pump.

[0068] The coolant flowing out of the battery cooler passes through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve 12, and the second interface of the ten-way valve 12, and flows back to the battery cooler.

[0069] In addition to merging the coolant flowing out of the battery assembly through the third interface of the ten-way valve and the coolant flowing out of the in-vehicle heater core, the coolant flowing out of the battery assembly also flows back to the battery assembly through the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, and the third electronic water pump.

[0070] In one embodiment of the present invention, the minimalist thermal management system may further include a one-way water valve, the inlet of the one-way water valve being connected to the third interface of the ten-way valve, and the outlet of the one-way water valve being connected to the fourth port of the ten-way valve, and the one-way water valve being used to realize one-way conduction between the third interface of the ten-way valve and the fourth interface of the ten-way valve.

[0071] In one embodiment of the present invention, the circuit expression of the sixth minimalist thermal management mode further includes:

[0072] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler;

[0073] The coolant flowing out of the water-cooled condenser is divided into two paths after passing through the water heater. One path flows through the second interface of the three-way valve, the third interface of the three-way valve, the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the third interface of the ten-way valve; the other path flows through the second interface of the three-way valve, the first interface of the three-way valve, and the in-vehicle heater core. The coolant flowing out through the third interface of the ten-way valve and the coolant flowing out through the in-vehicle heater core are combined and flow back to the water-cooled condenser through the first electronic water pump.

[0074] In addition to being combined with the coolant flowing out of the battery assembly through the third interface of the ten-way valve and the coolant flowing out of the in-vehicle heater core, the coolant flowing out of the battery assembly also flows back to the battery assembly through the one-way water valve, the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, and the third electronic water pump.

[0075] In one embodiment of the present invention, when the ten-way valve is in working state g, a corresponding seventh minimalist thermal management mode is provided;

[0076] The seventh minimalist thermal management mode circuit performance includes:

[0077] The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler;

[0078] The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second port of the three-way valve, the first port of the three-way valve, the in-vehicle heater core, and the first electronic water pump;

[0079] The coolant flowing out of the battery cooler passes through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve, and flows back to the battery cooler.

[0080] In one embodiment of the present invention, temperature and pressure sensors are provided at one or more of the following locations:

[0081] a first temperature and pressure sensor, disposed between the electric compressor and the battery cooler;

[0082] The second temperature and pressure sensor is provided between the electric compressor and the water-cooled condenser.

[0083] In a second aspect of the present application, a control method for a minimalist thermal management system of an electric vehicle is provided, wherein the minimalist thermal management system includes a refrigerant circuit, an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator;

[0084] The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger;

[0085] The electric drive and electronic control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electronic control assembly;

[0086] Battery circuit, equipped with a third electronic water pump and battery assembly;

[0087] The control piping system is equipped with a three-way valve and a ten-way valve;

[0088] The control method couples the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit based on the three-way valve and the ten-way valve, so that the electric vehicle's minimalist thermal management system provides corresponding thermal management modes when the ten-way valve is in different working states.

[0089] In a third aspect of the present application, an electric vehicle is provided, comprising:

[0090] passenger compartment;

[0091] A power system; and a simplified thermal management system for an electric vehicle, the simplified thermal management system comprising:

[0092] The refrigerant circuit is equipped with an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator;

[0093] The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger;

[0094] The electric drive and electronic control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electronic control assembly;

[0095] Battery circuit, equipped with a third electronic water pump and battery assembly;

[0096] The control piping system is equipped with a three-way valve and a ten-way valve;

[0097] The three-way valve and the ten-way valve couple the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit to form a minimalist thermal management system for the electric vehicle to provide corresponding thermal management modes when the ten-way valve is in different working states.

[0098] Compared with the existing technology, this application has at least the following technical effects:

[0099] By coupling and utilizing different heat sources such as ambient heat, electric drive and electronic control heat, and ambient heat, the system energy efficiency can be maximized.

[0100] Achieve winter range improvement, winter heating, summer cooling, spring and autumn dehumidification and cooling, spring and autumn dehumidification and heating, and electric drive and electronic control battery waste heat recovery, etc.

[0101] The thermal management system is divided into different modes according to the ambient temperature, battery temperature, and electric drive and electronic control temperature to achieve rapid mode switching; the cooling circuit mode is switched through a ten-way valve to achieve battery thermal management, electric drive and electronic control thermal management, and passenger compartment thermal management. The ten-way valve integration reduces the number of front cabin thermal management components and pipelines, which is more conducive to the front cabin layout and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] FIG1 shows an overall schematic diagram of a simplified thermal management system for an electric vehicle according to an embodiment of the present application;

[0103] FIG2 shows an overall schematic diagram of a refrigerant circuit in one embodiment of the present application;

[0104] FIG3 shows an overall schematic diagram of a passenger compartment circuit in one embodiment of the present application;

[0105] FIG4 shows an overall schematic diagram of an electric drive and electric control circuit in one embodiment of the present application;

[0106] FIG5 shows an overall schematic diagram of a battery circuit in one embodiment of the present application;

[0107] FIG6 shows a schematic diagram of an interface of a three-way valve in an embodiment of the present application;

[0108] FIG7 shows a schematic diagram of an interface of a ten-way valve in an embodiment of the present application;

[0109] FIG8 shows a schematic diagram of the working state of a ten-way valve in one embodiment of the present application (mode f in FIG8 has a gray frame);

[0110] FIG9 shows a circuit schematic diagram of a first minimalist thermal management mode in an embodiment of the present application;

[0111] FIG10 shows a circuit schematic diagram of another first minimalist thermal management mode in an embodiment of the present application;

[0112] FIG11 shows a circuit schematic diagram of another first minimalist thermal management mode in an embodiment of the present application;

[0113] FIG12 shows a circuit schematic diagram of a second minimalist thermal management mode in an embodiment of the present application;

[0114] FIG13 shows a circuit schematic diagram of a third minimalist thermal management mode in an embodiment of the present application;

[0115] FIG14 shows a circuit schematic diagram of a fourth minimalist thermal management mode in an embodiment of the present application;

[0116] FIG15 shows a circuit schematic diagram of a fourth minimalist thermal management mode according to an embodiment of the present application;

[0117] FIG16 shows a circuit schematic diagram of the fifth minimalist thermal management mode in one embodiment of the present application;

[0118] FIG17 shows a circuit schematic diagram of a fifth minimalist thermal management mode according to an embodiment of the present application;

[0119] FIG18 shows a circuit schematic diagram of the sixth minimalist thermal management mode in one embodiment of the present application;

[0120] FIG19 shows a circuit schematic diagram of a sixth minimalist thermal management mode according to an embodiment of the present application;

[0121] FIG20 shows a circuit schematic diagram of the seventh minimalist thermal management mode in an embodiment of the present application.

[0122] Figure numerals: electric compressor 1, water-cooled condenser 2, liquid storage drying tank 3, first throttling device 4, second throttling device 5; battery cooler 6, air-conditioning box assembly 7, in-vehicle evaporator 8, in-vehicle heater core 9, first temperature and pressure sensor 10; second temperature and pressure sensor 11, ten-way valve 12, first electronic water pump 13, water heater 14, three-way valve 15; high-temperature heat exchanger 16, second electronic water pump 17, low-temperature heat exchanger 18, third electronic water pump 19, battery assembly 20; one-way water valve 21, electric drive and electronic control assembly 22. DETAILED DESCRIPTION

[0123] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are used to explain the technical solutions of the present invention and do not mean that all implementation methods of the present invention have been exhaustive.

[0124] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0125] Please refer to Figure 1. In the first aspect of this application, a minimalist thermal management system for an electric vehicle is provided, including a refrigerant circuit, a passenger compartment circuit, an electric drive and control circuit, and a battery circuit.

[0126] Please refer to Figure 2 , the refrigerant circuit is provided with an electric compressor 1, a water-cooled condenser 2, a liquid storage tank, a first throttling device 4, a second throttling device 5, a battery cooler 6, and an in-vehicle evaporator 8;

[0127] Specifically, the electric compressor 1 can discharge high-temperature and high-pressure refrigerant gas and convert it into liquid refrigerant after heat exchange and cooling with the coolant side of the water-cooled condenser 2 through the water-cooled condenser 2 .

[0128] The water-cooled condenser 2, also known as a water-cooled condenser, plays a role in heat exchange and can remove heat from the high-temperature and high-pressure refrigerant gas discharged from the electric compressor 1, thereby raising the water temperature and changing the refrigerant from gas to liquid.

[0129] In this application, the liquid storage tank can be specifically a liquid storage and drying tank 3, which can be used to regulate the circulation volume of the refrigerant, and can also serve to store the refrigerant, filter out impurities in the refrigerant, and absorb moisture in the refrigerant. Specifically, the liquid storage and drying tank 3 can also be used to receive the refrigerant discharged from the water-cooled condenser 2, and therefore can be installed downstream of the water-cooled condenser 2.

[0130] The first throttling device 4 and the second throttling device 5 are connected in parallel. Their basic principle is to force high-pressure liquid refrigerant to flow through a small flow cross-section, generating appropriate local resistance losses and causing a sudden drop in refrigerant pressure. Simultaneously, a portion of the liquid refrigerant vaporizes, absorbing latent heat, and bringing the throttled refrigerant to a low-pressure, low-temperature state. The first throttling device 4 is used to create a pressure differential within the refrigerant pipeline before it passes through the in-vehicle evaporator 8. Specifically, this involves throttling the high-pressure liquid refrigerant flowing from the water-cooled condenser 2 to its evaporation pressure and regulating the amount of refrigerant liquid entering the in-vehicle evaporator 8. The second throttling device 5 is used to create a pressure differential within the refrigerant pipeline before it passes through the battery cooler 6.

[0131] The battery cooler 6 includes a coolant inlet and outlet and a refrigerant inlet and outlet. Its main function is to introduce the refrigerant in the refrigerant circuit and maintain the normal operating temperature range of the power battery in the electric vehicle by heat dissipation;

[0132] The vehicle interior evaporator 8 is used to evaporate the low-temperature, low-pressure refrigerant and absorb the heat of the air in the vehicle, thereby achieving the purpose of cooling the vehicle interior.

[0133] Please refer to FIG3 , the passenger compartment circuit includes an in-vehicle heater core 9 , a first electronic water pump 13 , a water heater 14 , and a high-temperature heat exchanger 16 .

[0134] Specifically, the vehicle heater core 9 is a crucial component of the vehicle's heating system. Its operating principle is to draw cold air into the heater core via a blower, heat it, and then deliver it into the vehicle through the air outlet, thereby heating the air inside the vehicle and meeting the heating requirements of the passenger compartment. Furthermore, the vehicle heater core 9 and the vehicle evaporator 8 are located within the air conditioning unit assembly 7. In one application scenario, such as during spring and autumn when the ambient temperature and humidity are relatively high and the passenger compartment requires dehumidification, the vehicle evaporator 8 can cool and dehumidify the air and exchange heat with the high-temperature coolant within the vehicle heater core 9 to meet the comfort requirements of the passenger compartment.

[0135] The first electronic water pump 13 ensures a stable coolant flow rate in the passenger compartment circuit and plays a role in stably controlling the temperature of the passenger compartment.

[0136] The water heater 14 can be selectively turned on according to the user's heating needs to achieve the purpose of heating the passenger compartment. When the water heater 14 is not turned on, it only represents the normal passage of the coolant.

[0137] The high temperature heat exchanger 16 allows the coolant to absorb ambient heat and transfer it to the passenger compartment.

[0138] Please refer to FIG. 4 , the electric drive and electronic control circuit includes a second electronic water pump 17 , a low-temperature heat exchanger 18 and an electric drive and electronic control assembly 22 .

[0139] The second electronic water pump 17 enables the electric drive and electronic control circuit to have a stable and flowing coolant flow and plays a role in stably controlling the temperature of the electric drive and electronic control assembly 22.

[0140] The low-temperature heat exchanger 18 is used to exchange heat between the high-temperature coolant from the electric drive and electronic control assembly 22 and the ambient air to obtain low-temperature coolant.

[0141] The electric drive and control assembly 22 is an assembly of the rear motor (REDS), CCU (electric control unit), IPD (intelligent driving controller), and FEDS (front motor). The REDS, CCU, and IPD are connected in series and in parallel with the FEDS. The electric drive and control assembly 22 can also be understood as a collection of electric drive and control components. The specific composition of the electric drive and control assembly 22 depends on the definition of different vehicles.

[0142] Please refer to FIG5 , the battery circuit is provided with a third electronic water pump 19 , a battery assembly 20 and a battery cooler 6 , wherein the battery assembly 20 includes an ESS.

[0143] The third electronic water pump 19 ensures a stable coolant flow in the battery circuit and plays a role in stably controlling the temperature of the battery cells in the battery assembly 20 .

[0144] The battery assembly 20 includes a power battery and the cells inside the power battery, and is an important component that supports the endurance of the electric vehicle.

[0145] The control piping system is provided with a three-way valve 15 and a ten-way valve 12. The control piping system serves as a pipeline carrying refrigerant and coolant to maintain the flow of the refrigerant and coolant in the pipeline.

[0146] As shown in Figure 6, the three-way valve 15 has a first interface, a second interface and a third interface; the three-way valve 15 can specifically be a three-way proportional valve, a three-way proportional water valve or a three-way regulating valve, which can control the flow direction of the coolant according to the requirements of the thermal management mode, and can also divert the coolant.

[0147] The first interface of the three-way valve 15 is connected to the in-vehicle heater core 9 , the second interface of the three-way valve 15 is connected to the water heater 14 , and the third interface of the three-way valve 15 is connected to the high-temperature heat exchanger 16 and the ten-way valve 12 .

[0148] As shown in FIG7 , the ten-way valve 12 has a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port and a tenth port;

[0149] The first interface of the ten-way valve 12 is connected to the battery cooler 6, the second interface of the ten-way valve 12 is connected to the battery cooler 6, the third interface of the ten-way valve 12 is connected to the junction of the inlet of the first electronic water pump 13 and the outlet of the in-vehicle heater core 9; the fourth interface of the ten-way valve 12 is connected to the junction of the third interface of the three-way valve 15 and the inlet of the high-temperature heat exchanger 16; the fifth interface of the ten-way valve 12 is connected to the high-temperature heat exchanger 16, the sixth interface of the ten-way valve 12 is connected to the second electronic water pump 17, the seventh interface of the ten-way valve 12 is connected to the junction of the outlet of the electric drive and electronic control assembly 22 and the inlet of the low-temperature heat exchanger 18, the eighth interface of the ten-way valve 12 is connected to the low-temperature heat exchanger 18, the ninth interface of the ten-way valve 12 is connected to the third electronic water pump 19, and the tenth interface of the ten-way valve 12 is connected to the battery assembly 20.

[0150] In one embodiment of the present application, a temperature and pressure sensor is provided at one or more of the following locations, including:

[0151] a first temperature and pressure sensor 10 , provided between the electric compressor 1 and the battery cooler 6 , for detecting the temperature of the refrigerant flowing back to the electric compressor 1 ;

[0152] The second temperature and pressure sensor 11 is provided between the electric compressor 1 and the water-cooled condenser 2 , and is used to detect the temperature of the refrigerant flowing out of the electric compressor 1 .

[0153] That is, the first temperature and pressure sensor 10 and the second temperature and pressure sensor 11 are used to obtain the temperature and pressure of the refrigerant to stably control the heating or cooling support of the refrigerant circuit for the passenger compartment, the battery assembly 20 and / or the electric drive and electronic control assembly 22.

[0154] In this application, based on the working state of the ten-way valve 12, the electric vehicle minimalist thermal management circuit to be protected by this application is divided into several thermal management modes, as shown in the following table and Figure 8:

[0155] It should be noted that in one application scenario of this application, extremely high temperatures in summer can be determined as above 40°C, summer temperatures can be determined as 25°C-40°C, spring and autumn temperatures can be determined as 5°C-25°C, and winter temperatures can be determined as below 5°C. Intense driving, such as sudden acceleration and deceleration, and regular driving, such as relatively stable driving speed, can be determined based on the threshold range of the vehicle's acceleration. This is only an example and is not intended to be limiting.

[0156] In one embodiment of the present application, when the ten-way valve 12 is in working state a, a corresponding first minimalist thermal management mode is provided;

[0157] As shown in FIG9 , the circuit representation of the first minimalist thermal management mode includes:

[0158] The high-temperature and high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. The high-temperature and high-pressure refrigerant gas is cooled and becomes liquid refrigerant after heat exchange.

[0159] The liquid refrigerant continues to flow into the liquid storage drying tank 3 and is divided into two paths:

[0160] The refrigerant passes through the first throttling device 4 and is throttled to become a low-temperature, low-pressure two-phase refrigerant, which then enters the vehicle evaporator 8 to cool the passenger compartment.

[0161] The refrigerant passes through the second throttling device 5 and is throttled to become a low-temperature, low-pressure two-phase refrigerant. The refrigerant enters the battery cooler 6 and exchanges heat with the coolant to cool the battery.

[0162] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0163] The high-temperature coolant flowing out of the water-cooled condenser 2, which has exchanged heat with the refrigerant, flows through the water heater 14, the second port of the three-way valve 15, and then the first port of the three-way valve 15 into the high-temperature heat exchanger 16, where it exchanges heat with the ambient air to produce cooled coolant. The cooled coolant then flows through the fifth port of the ten-way valve 12, the third port of the ten-way valve 12, and the first electronic water pump 13 back to the water-cooled condenser 2, where it continues to exchange heat with the high-temperature refrigerant, starting a new cycle.

[0164] The coolant flowing out of the battery cooler 6 is the cooled coolant obtained by heat exchange with the refrigerant side. The cooled coolant passes through the first port of the ten-way valve 12, the ninth port of the ten-way valve 12, the third electronic water pump 19, and the battery assembly 20 to cool the battery. The coolant flowing out of the battery passes through the tenth port of the ten-way valve 12, the second port of the ten-way valve 12, and flows back to the battery cooler 6, where it continues to exchange heat with the low-temperature refrigerant, starting a new cycle.

[0165] The high-temperature coolant flowing out of the electric drive and electronic control assembly 22 exchanges heat with ambient air through the low-temperature heat exchanger 18 before flowing out as low-temperature coolant, thereby cooling the electric drive and electronic control. The low-temperature coolant flows through the 8th port of the 10-way valve 12, the 6th port of the 10-way valve 12, and the second electronic water pump 17 back to the electric drive and electronic control assembly 22, starting a new cycle.

[0166] Here, the first minimalist thermal management mode can be used to cool the passenger compartment, battery, and electric drive and electronic control under extremely high summer temperatures and intense summer driving.

[0167] In one embodiment of the present application, when the temperature of the battery cells in the battery assembly 20 is lower than the cooling threshold, the second throttling device 5 is closed; the refrigerant gas flowing out of the electric compressor 1 flows back to the electric compressor 1 through the water-cooled condenser 2, the liquid storage drying tank 3, the first throttling device 4, and the in-vehicle evaporator 8.

[0168] Setting a cooling threshold effectively defines the degree of battery cooling. When the battery cell temperature falls below the cooling threshold, no refrigerant circuit intervention is required, reducing energy loss and saving energy. The specific value of the cooling threshold is not limited in this application and can be selected based on the actual vehicle usage area and battery type. For example, the cooling threshold can be set to 38 degrees Celsius. When the battery temperature falls below 38 degrees Celsius, the second throttling device 5 is closed, and the battery cooling is performed solely through the low-temperature heat exchanger 18.

[0169] In one embodiment of the present application, as shown in FIG10 , the circuit expression of the first minimalist thermal management mode further includes:

[0170] The high-temperature and high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. The high-temperature and high-pressure refrigerant gas is cooled and becomes liquid refrigerant after heat exchange.

[0171] After the liquid refrigerant continues to flow into the liquid storage drying tank 3, it is throttled by the first throttling device 4 to become a low-temperature, low-pressure two-phase refrigerant and enters the vehicle evaporator 8; it exchanges heat with the high-temperature and high-humidity air in the vehicle introduced by the vehicle's blower, and the high-humidity air is cooled and condensed into small water droplets and discharged. The gas cooled and dehumidified by the vehicle evaporator 8 exchanges heat with the high-temperature coolant inside the vehicle heater core 9 again to be heated again to meet the comfort requirements.

[0172] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0173] After passing through the second throttling device 5, it is throttled into a low-temperature, low-pressure two-phase refrigerant and enters the battery cooler 6, where it exchanges heat with the coolant and transfers the heat to the high-pressure side to cool the battery.

[0174] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0175] The high-temperature coolant flowing out of the water-cooled condenser 2, which exchanges heat with the refrigerant, flows through the water heater 14 and is then divided into two paths. One path passes through the second port of the three-way valve 15, the first port of the three-way valve 15, and exchanges heat with ambient air in the high-temperature heat exchanger 16, where the cooled coolant flows out. The cooled coolant flows out through the fifth port of the ten-way valve 12, the third port of the ten-way valve 12; the other path passes through the interior heater core 9, exchanges heat with the low-temperature air cooled by the interior evaporator 8, and then flows out. It then merges with the coolant flowing out through the third port of the ten-way valve 12, flows back to the water-cooled condenser 2 through the first electronic water pump 13, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle.

[0176] The coolant flowing out of the electric drive and electronic control assembly 22 flows through the low-temperature heat exchanger 18, the 8th port of the 10-way valve 12, the 6th port of the 10-way valve 12, and the second electronic water pump 17, returning to the electric drive and electronic control assembly 22. The high-temperature coolant flowing out of the electric drive and electronic control assembly 22 exchanges heat with ambient air through the low-temperature heat exchanger 18 before flowing out as low-temperature coolant, thereby cooling the electric drive and electronic control. The low-temperature coolant flows through the 8th port of the 10-way valve 12, the 6th port of the 10-way valve 12, and the second electronic water pump 17, returning to the electric drive and electronic control assembly 22, beginning a new cycle.

[0177] Here, the first minimalist thermal management mode can also meet the dehumidification and cooling needs of the passenger compartment when the ambient temperature and humidity are relatively high in spring and autumn, and can also achieve cooling of the battery and electric drive and electronic control.

[0178] In one embodiment of the present application, the outlet air temperature of the interior heater core 9 is controlled by the opening of the three-way valve 15 . When the interior outlet air temperature is within a first desired range, more coolant in the three-way valve 15 is controlled to flow through the high-temperature heat exchanger for heat dissipation. When the interior outlet air temperature is within a second desired range, more coolant in the three-way valve 15 is controlled to flow through the interior heater core 9 for heat dissipation. It should be noted that the division of the first and second desired ranges of interior outlet air temperature can be based on actual interior air demand and is not specifically limited to a specific temperature. In one application scenario, the demand for the air outlet temperature represented by the first demand range is weaker than the demand for the air outlet temperature represented by the second demand range. The first demand range can be understood as when the air outlet temperature in the car is not required to be high, for example, when the air outlet temperature in the car is required to be lower than 15°C, more coolant in the three-way valve 15 can be controlled to flow through the high-temperature heat exchanger for heat dissipation; but when the air outlet temperature in the car is required to be higher than 15°C, more coolant in the three-way valve is controlled to flow through the car heater core for heat dissipation.

[0179] Here, in this way, different air outlet temperature requirements in the vehicle can be achieved by adjusting the opening of the three-way valve 15 based on the ten-way valve 12, which can fully meet the user's requirements for the passenger compartment temperature.

[0180] In one embodiment of the present application, if there is a need for cooling the battery, the refrigerant gas flowing out of the electric compressor 1 passes through the water-cooled condenser 2 and the liquid storage drying tank 3 and is divided into two paths. One path passes through the first throttling device 4 and flows out of the in-vehicle evaporator 8, and the other path passes through the second throttling device 5 and flows out of the battery cooler 6; the refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1.

[0181] As shown in FIG11 , if there is a need to cool the battery, the second throttling device 5 and its related circuits in the refrigerant circuit can be reintegrated into the first minimalist thermal management circuit to increase active cooling of the battery.

[0182] In one embodiment of the present application, when the ten-way valve 12 is in working state b, a corresponding second minimalist thermal management mode is provided;

[0183] As shown in Figure 12, the circuit performance of the second minimalist thermal management mode includes:

[0184] The high-temperature and high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. The high-temperature and high-pressure refrigerant gas is cooled and becomes liquid refrigerant after heat exchange.

[0185] The liquid refrigerant continues to flow into the liquid storage drying tank 3 and is divided into two paths:

[0186] The refrigerant passes through the first throttling device 4 and is throttled to become a low-temperature, low-pressure two-phase refrigerant, which then enters the vehicle evaporator 8 to cool the passenger compartment.

[0187] The refrigerant passes through the second throttling device 5 and is throttled to become a low-temperature, low-pressure two-phase refrigerant. The refrigerant enters the battery cooler 6 and exchanges heat with the coolant to cool the battery.

[0188] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0189] The high-temperature coolant flowing out of the water-cooled condenser 2, which exchanges heat with the refrigerant side, flows through the water heater 14, the second interface of the three-way valve 15, and the third interface of the three-way valve 15 into the high-temperature heat exchanger 16. After a heat exchange and cooling with the ambient air in the high-temperature heat exchanger, the coolant flows out through the fifth interface of the ten-way valve 12, and the sixth interface of the ten-way valve 12, and enters the electric drive and electronic control assembly 22 through the second electronic water pump 17 to cool the electric drive and electronic control. The coolant flowing out of the electric drive and electronic control enters the low-temperature heat exchanger 18, exchanges heat with the ambient air, and then flows out through the eighth interface of the ten-way valve 12, the third interface of the ten-way valve 12, and the first electronic water pump 13 back to the water-cooled condenser 2, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle.

[0190] The coolant flowing out of the battery cooler 6 is the cooled coolant obtained by heat exchange with the refrigerant side. The cooled coolant passes through the first interface of the ten-way valve 12, the ninth interface of the ten-way valve 12, and the third electronic water pump 19, and enters the battery assembly 20 to cool the battery. The coolant coming out of the battery passes through the tenth interface of the ten-way valve 12 and the second interface of the ten-way valve 12 and flows back to the battery cooler 6, and continues to exchange heat with the low-temperature refrigerant to start a new cycle.

[0191] Please continue to refer to Figure 8. When the ten-way valve 12 is in working state b, the 7th interface of the ten-way valve 12 and the 4th interface of the ten-way valve 12, in an application scenario, the ten-way valve 12 can also be replaced by an eight-way valve or other multi-way valve that can realize the loop function, and it still belongs to the content to be protected by this application.

[0192] The second minimalist thermal management mode allows for cooling of the passenger compartment, battery, and electric drive and control systems during high summer temperatures or normal summer driving conditions. Compared to the first minimalist thermal management mode, this mode reduces air conditioning energy consumption and helps speed up passenger compartment cooling. In an exceptional case, when the coolant temperature at the outlet of the second electronic water pump 17 exceeds the coolant temperature threshold at the inlet of the electric drive and control systems, the ten-way valve 12 switches from operating state b to operating state a to meet the cooling requirements of the electric drive and control systems.

[0193] In one embodiment of the present application, referring to the first minimalist thermal management mode, when the temperature of the battery cells in the battery assembly 20 is lower than the cooling threshold, the second throttling device 5 is closed; the refrigerant gas flowing out of the electric compressor 1 passes through the water-cooled condenser 2, the liquid storage tank, the first throttling device 4, and the in-vehicle evaporator 8 and flows back to the electric compressor 1.

[0194] Here, setting a cooling threshold can effectively divide the degree of battery cooling. When the temperature of the battery cell is lower than the cooling threshold, there is no need for the refrigerant circuit to intervene, which can reduce energy loss and air conditioning energy consumption.

[0195] In one embodiment of the present application, as shown in FIG13 , the ten-way valve 12 provides a corresponding third minimalist thermal management mode when it is in the working state c;

[0196] The high-temperature, high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. After cooling through the heat exchange, the high-temperature, high-pressure refrigerant gas becomes liquid refrigerant. The liquid refrigerant continues to flow into the liquid storage and drying tank 3, is throttled by the first throttling device 4 to become a low-temperature, low-pressure two-phase refrigerant, and enters the vehicle evaporator 8. The low-temperature, low-pressure refrigerant flowing out of the vehicle evaporator 8 enters the electric compressor 1, starting a new cycle.

[0197] The high-temperature coolant flowing out of the water-cooled condenser 2 and exchanging heat with the refrigerant side flows through the water heater 14, passes through the second interface of the three-way valve 15, the first interface of the three-way valve 15, the interior heater core 9, and the first electronic water pump 13 and flows back to the water-cooled condenser 2;

[0198] The coolant flowing out of the battery cooler 6 passes through the first interface of the ten-way valve 12, the sixth interface of the ten-way valve 12, the second electronic water pump 17, the electric drive and electronic control assembly 22, the low-temperature heat exchanger 18, the eighth interface of the ten-way valve 12, the ninth interface of the ten-way valve 12, the third electronic water pump 19, the battery assembly 20, the tenth interface of the ten-way valve 12, and the second interface of the ten-way valve 12, and flows back to the battery cooler 6 to complete the passive cooling of the battery.

[0199] Here, through the third minimalist thermal management mode, the battery assembly 20 and the electric drive and electronic control assembly 22 dissipate heat through the low-temperature heat exchanger 18, which can achieve passive cooling of the battery and electric drive and electronic control in spring and autumn environments.

[0200] In one embodiment of the present application, when the ten-way valve 12 is in the working state d, a corresponding fourth minimalist thermal management mode is provided;

[0201] As shown in FIG14 , the circuit performance of the fourth simplified thermal management mode includes:

[0202] The high-temperature and high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. The high-temperature and high-pressure refrigerant gas is cooled and becomes liquid refrigerant after heat exchange.

[0203] The liquid refrigerant continues to flow into the liquid storage drying tank 3 and is divided into two paths:

[0204] The refrigerant passes through the first throttling device 4 and is throttled to become a low-temperature, low-pressure two-phase refrigerant, which then enters the in-vehicle evaporator 8; it exchanges heat with the low-temperature, high-humidity gas introduced by the car's blower, and the high-humidity air is cooled and condensed into small water droplets and discharged; the gas cooled and dehumidified by the in-vehicle evaporator 8 exchanges heat with the high-temperature coolant inside the in-vehicle heater core 9 again to be heated again to meet comfort requirements.

[0205] The refrigerant passes through the second throttling device 5 and becomes a low-temperature, low-pressure two-phase refrigerant, which enters the battery cooler 6, exchanges heat with the coolant, and transfers the heat to the high-pressure side to realize an air source heat pump.

[0206] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0207] The high-temperature coolant flowing out of the water-cooled condenser 2 and exchanging heat with the refrigerant side flows through the water heater 14, passes through the second interface of the three-way valve 15, and enters the vehicle interior heater core 9 through the first interface of the three-way valve 15. After being cooled by exchanging heat with the low-temperature air cooled by the vehicle interior evaporator 8, it flows out and flows back to the water-cooled condenser 2 through the first electronic water pump 13, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle.

[0208] The coolant flowing out of the battery cooler 6 is the cooled coolant obtained by heat exchange with the refrigerant side. The cooled coolant passes through the first interface of the ten-way valve 12 and the fourth interface of the ten-way valve 12 to enter the high-temperature heat exchanger 16 to exchange heat with the ambient air and absorb the heat of the air. The coolant after flowing out passes through the fifth interface of the ten-way valve 12, the sixth interface of the ten-way valve 12, the second electronic water pump 17, enters the electric drive and electronic control assembly 22, and flows back to the battery cooler 6 through the seventh interface of the ten-way valve 12 and the second interface of the ten-way valve 12, and continues to exchange heat with the low-temperature refrigerant, starting a new cycle.

[0209] The coolant flowing out of the battery assembly 20 flows back to the battery assembly 20 through the 10th port of the 10-way valve 12, the 9th port of the 10-way valve 12, and the third electronic water pump 19. It should be noted that this method creates a self-circulating temperature-averaging mode among the battery assembly 20, the third electronic water pump 19, and the 10-way valve 12 in the battery circuit, ensuring stable and normal operation of the battery cells and reducing vehicle energy consumption.

[0210] Here, the fourth minimalist thermal management mode allows coolant to absorb ambient heat through the high-temperature heat exchanger 16 to heat the passenger compartment when the ambient temperature is low and the humidity is high in spring and autumn, and to dehumidify the passenger compartment through the refrigerant circuit. In addition, it can also achieve self-circulating temperature equalization of the battery and cooling of the electric drive and electronic control. In one application scenario, when the battery needs passive heat dissipation, the ten-way valve 12 can be switched from operating state d to operating state c, and the battery assembly 20 and the electric drive and electronic control assembly 22 can dissipate heat through the low-temperature heat exchanger 18.

[0211] In one embodiment of the present application, as shown in FIG15 , the circuit representation of the fourth minimalist thermal management mode further includes:

[0212] The high-temperature, high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. After being cooled by the heat exchange, the high-temperature, high-pressure refrigerant gas becomes liquid refrigerant. The liquid refrigerant continues to flow into the liquid storage and drying tank 3, is throttled by the second throttling device 5 to become a low-temperature, low-pressure two-phase refrigerant, and enters the battery cooler 6. After exchanging heat with the coolant, the heat is transferred to the high-pressure side and then enters the electric compressor 1, starting a new cycle.

[0213] The high-temperature coolant flowing out of the water-cooled condenser 2 and exchanging heat with the refrigerant side flows through the water heater 14, passes through the second interface of the three-way valve 15, enters the first interface of the three-way valve 15, enters the vehicle heater core 9 to heat the low-temperature air and send it into the passenger compartment, flows back to the water-cooled condenser 2 through the first electronic water pump 13, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle;

[0214] The coolant flowing out of the battery cooler 6 is the cooled coolant obtained by heat exchange with the refrigerant side. The cooled coolant passes through the first interface of the ten-way valve 12 and the fourth interface of the ten-way valve 12 to enter the high-temperature heat exchanger 16 to exchange heat with the ambient air and absorb the heat of the air. The coolant after flowing out passes through the fifth interface of the ten-way valve 12, the sixth interface of the ten-way valve 12, the second electronic water pump 17, enters the electric drive and electronic control assembly 22, and flows back to the battery cooler 6 through the seventh interface of the ten-way valve 12 and the second interface of the ten-way valve 12, and continues to exchange heat with the low-temperature refrigerant, starting a new cycle.

[0215] The coolant flowing out of the battery assembly 20 flows back to the battery assembly 20 through the 10th port of the 10-way valve 12, the 9th port of the 10-way valve 12, and the third electronic water pump 19. It should be noted that this method creates a self-circulating temperature-averaging mode among the battery assembly 20, the third electronic water pump 19, and the 10-way valve 12 in the battery circuit, ensuring stable and normal operation of the battery cells and reducing vehicle energy consumption.

[0216] Here, through the fourth minimalist thermal management mode, when the ambient temperature is low and the ambient humidity is high in spring and autumn, the coolant absorbs ambient heat through the high-temperature heat exchanger 16 to heat the passenger compartment, and dehumidifies the passenger compartment through the refrigerant circuit. In addition, the self-circulation temperature equalization of the battery and the electric drive and electronic control cooling effect can also be achieved.

[0217] Here, through the fourth minimalist thermal management mode, the heating needs of the passenger compartment can also be met when the ambient temperature is low in winter.

[0218] In one embodiment of the present application, when the ten-way valve 12 is in the working state e, a corresponding fifth minimalist thermal management mode is provided;

[0219] As shown in FIG16 , the circuit performance of the fifth minimalist thermal management mode includes:

[0220] The high-temperature and high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. The high-temperature and high-pressure refrigerant gas is cooled and becomes liquid refrigerant after heat exchange.

[0221] The liquid refrigerant continues to flow into the liquid storage drying tank 3 and is divided into two paths:

[0222] The refrigerant passes through the first throttling device 4 and is throttled to become a low-temperature, low-pressure two-phase refrigerant, which then enters the in-vehicle evaporator 8; it exchanges heat with the low-temperature, high-humidity air in the vehicle introduced by the blower of the vehicle, and the high-humidity air is cooled and condensed into small water droplets and discharged; the gas cooled and dehumidified by the in-vehicle evaporator 8 exchanges heat with the high-temperature coolant inside the in-vehicle heater core 9 again to be heated again to meet the comfort requirements.

[0223] The refrigerant passes through the second throttling device 5 and becomes a low-temperature, low-pressure two-phase refrigerant. It then enters the battery cooler 6, exchanges heat with the coolant, and transfers the heat to the high-pressure side, thus realizing waste heat recovery for the electric drive and electric control.

[0224] The refrigerant flowing out of the in-vehicle evaporator 8 and the refrigerant flowing out of the battery cooler 6 merge and flow back to the electric compressor 1 to start a new cycle;

[0225] The high-temperature coolant flowing out of the water-cooled condenser 2 and exchanging heat with the refrigerant side flows through the water heater 14, passes through the second interface of the three-way valve 15, and enters the vehicle interior heater core 9 through the first interface of the three-way valve 15. After being cooled by exchanging heat with the low-temperature air cooled by the vehicle interior evaporator 8, it flows out and flows back to the water-cooled condenser 2 through the first electronic water pump 13, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle.

[0226] The coolant flowing out of the battery cooler 6 flows back to the battery cooler 6 through the first port of the ten-way valve 12, the sixth port of the ten-way valve 12, the second electronic water pump 17, the electric drive and electronic control assembly 22, the seventh port of the ten-way valve 12, and the second port of the ten-way valve 12;

[0227] The coolant flowing out of the battery assembly 20 flows back to the battery assembly 20 through the 10th port of the 10-way valve 12, the 9th port of the 10-way valve 12, and the third electronic water pump 19. It should be noted that this method creates a self-circulating temperature-averaging mode among the battery assembly 20, the third electronic water pump 19, and the 10-way valve 12 in the battery circuit, ensuring stable and normal operation of the battery cells and reducing vehicle energy consumption.

[0228] Here, through the fifth minimalist thermal management mode, when the ambient temperature is low and the ambient humidity is high in spring and autumn, the coolant absorbs the waste heat of the electric drive, electronic control and electronic components through the battery cooler 6 and heats the passenger compartment, and dehumidifies the passenger compartment through the refrigerant circuit. In addition, the self-circulation and temperature equalization of the battery can be achieved.

[0229] In one application scenario, when the coolant temperature at the outlet of the second electronic water pump 17 is less than the ambient temperature + a threshold, the ten-way valve 12 can switch from operating state e to operating state d, implementing air-source heat pump mode. The threshold can be adjusted based on actual thermal management requirements and is not subject to further restrictions.

[0230] In one embodiment of the present application, as shown in FIG17 , the circuit representation of the fifth minimalist thermal management mode further includes:

[0231] The high-temperature, high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. After being cooled by the heat exchange, the high-temperature, high-pressure refrigerant gas becomes liquid refrigerant. The liquid refrigerant continues to flow into the liquid storage and drying tank 3, is throttled by the second throttling device 5 to become a low-temperature, low-pressure two-phase refrigerant, and enters the battery cooler 6. After exchanging heat with the coolant, the heat is transferred to the high-pressure side and then enters the electric compressor 1, starting a new cycle.

[0232] The high-temperature coolant flowing out of the water-cooled condenser 2 and exchanging heat with the refrigerant side flows through the water heater 14, passes through the second interface of the three-way valve 15, and enters the vehicle interior heater core 9 through the first interface of the three-way valve 15 to heat the low-temperature air. The coolant after heat exchange and cooling flows out, flows back to the water-cooled condenser 2 through the first electronic water pump 13, and continues to exchange heat with the high-temperature refrigerant, starting a new cycle;

[0233] The coolant flowing out of the battery cooler 6 flows back to the battery cooler 6 through the first port of the ten-way valve 12, the sixth port of the ten-way valve 12, the second electronic water pump 17, the electric drive and electronic control assembly 22, the seventh port of the ten-way valve 12, and the second port of the ten-way valve 12;

[0234] The coolant flowing out of the battery assembly 20 flows back to the battery assembly 20 through the 10th port of the 10-way valve 12, the 9th port of the 10-way valve 12, and the third electronic water pump 19. It should be noted that this method creates a self-circulating temperature-averaging mode among the battery assembly 20, the third electronic water pump 19, and the 10-way valve 12 in the battery circuit, ensuring stable and normal operation of the battery cells and reducing vehicle energy consumption.

[0235] Here, through the fifth minimalist thermal management mode, the passenger compartment heating thermal management needs in winter can be achieved. The coolant absorbs the waste heat of the electric drive, electronic control and electronic components through the battery cooler 6 and is supplied to the passenger compartment for heating. In addition, the self-circulation and temperature equalization of the battery can also be achieved.

[0236] In one application scenario, when the coolant temperature at the outlet of the second electronic water pump 17 is less than the ambient temperature + a threshold, the ten-way valve 12 can switch from operating state e to operating state d, implementing air-source heat pump mode. The threshold can be adjusted based on actual thermal management requirements and is not subject to further restrictions.

[0237] As mentioned above, if the blower outlet temperature is insufficient, the water heater 14 can be turned on to provide additional heat. The threshold value can be adjusted according to actual thermal management requirements and is not limited here.

[0238] In one embodiment of the present application, when the ten-way valve 12 is in the working state f, a corresponding sixth minimalist thermal management mode is provided;

[0239] As shown in FIG18 , the circuit performance of the sixth simplified thermal management mode includes:

[0240] The high-temperature, high-pressure refrigerant gas flowing out of the electric compressor 1 enters the water-cooled condenser 2 and exchanges heat with the coolant side of the water-cooled condenser 2. After being cooled by the heat exchange, the high-temperature, high-pressure refrigerant gas becomes liquid refrigerant. The liquid refrigerant continues to flow into the liquid storage and drying tank 3, is throttled by the second throttling device 5 to become a low-temperature, low-pressure two-phase refrigerant, and enters the battery cooler 6. After exchanging heat with the coolant, the heat is transferred to the high-pressure side and then enters the electric compressor 1, starting a new cycle.

[0241] The coolant flowing out of the water-cooled condenser 2 is divided into two paths after passing through the water heater 14. One path flows through the second port of the three-way valve 15, the third port of the three-way valve 15, the fourth port of the ten-way valve 12, the ninth port of the ten-way valve 12, the third electronic water pump 19, the battery assembly 20, the tenth port of the ten-way valve 12, and the third port of the ten-way valve 12; the other path flows through the second port of the three-way valve 15, the first port of the three-way valve 15, and the interior heater core 9. The coolant flowing out through the third port of the ten-way valve 12 and the coolant flowing out through the interior heater core 9 are combined and flow back to the water-cooled condenser 2 through the first electronic water pump 13.

[0242] In addition to merging the coolant flowing out of the battery assembly 20 through the third interface of the ten-way valve 12 and the coolant flowing out of the in-vehicle heater core 9, the coolant flowing out of the battery assembly 20 also flows back to the battery assembly 20 through the fourth interface of the ten-way valve 12, the ninth interface of the ten-way valve 12, and the third electronic water pump 19, so that the battery circuit forms a small cycle for temperature regulation.

[0243] The cooled coolant flowing out of the battery cooler 6 and exchanging heat with the refrigerant side passes through the first interface of the ten-way valve 12, the sixth interface of the ten-way valve 12, and the second electronic water pump 17 into the electric drive and electronic control assembly 22 to absorb waste heat, and then passes through the seventh interface of the ten-way valve 12, the second interface of the ten-way valve 12, and enters the battery cooler 6 to exchange heat with the low-temperature refrigerant, starting a new cycle.

[0244] Here, in the sixth minimalist thermal management mode, the water heater 14 is turned on, which can be used in scenarios where both the battery and the passenger compartment need to be heated, and can also realize waste heat recovery of the electric drive and electronic control. In some application scenarios, such as when the ambient temperature is extremely low, the electric compressor 1 is turned off, and the heater core 9 in the car is heated by the water heater 14. The coolant passes through the water-cooled condenser 2, the water heater 14, the second interface of the three-way valve 15, the first interface of the three-way valve 15, and the first electronic water pump 13 to form a heating cycle to heat the passenger compartment. At this time, the ten-way water valve can be in working state e: electric drive and electronic control heat storage, battery self-circulation; working state f: battery heating at the same time, electric drive and electronic control heat storage; working state g: electric drive and electronic control heating battery.

[0245] In one embodiment of the present application, the minimalist thermal management system may further include a one-way water valve 21, the inlet of the one-way water valve 21 being connected to the third interface of the ten-way valve 12, and the outlet of the one-way water valve 21 being connected to the fourth port of the ten-way valve 12, and the one-way water valve 21 being used to realize one-way conduction between the third interface of the ten-way valve 12 and the fourth interface of the ten-way valve 12.

[0246] As shown in FIG19 , the circuit representation of the sixth minimalist thermal management mode also includes:

[0247] The refrigerant gas flowing out of the electric compressor 1 flows back to the electric compressor 1 through the water-cooled condenser 2, the liquid storage tank, the second throttling device 5, and the battery cooler 6;

[0248] The coolant flowing out of the water-cooled condenser 2 is divided into two paths after passing through the water heater 14. One path flows through the second port of the three-way valve 15, the third port of the three-way valve 15, the fourth port of the ten-way valve 12, the ninth port of the ten-way valve 12, the third electronic water pump 19, the battery assembly 20, the tenth port of the ten-way valve 12, and the third port of the ten-way valve 12; the other path flows through the second port of the three-way valve 15, the first port of the three-way valve 15, and the interior heater core 9. The coolant flowing out through the third port of the ten-way valve 12 and the coolant flowing out through the interior heater core 9 are combined and flow back to the water-cooled condenser 2 through the first electronic water pump 13.

[0249] In addition to being combined with the coolant flowing out of the battery assembly 20 through the third interface of the ten-way valve 12 and the coolant flowing out of the in-vehicle heater core 9, the coolant flowing out of the battery assembly 20 also flows back to the battery assembly 20 through the one-way water valve 21, the fourth interface of the ten-way valve 12, the ninth interface of the ten-way valve 12, and the third electronic water pump 19.

[0250] Here, this method can be used in the sixth minimalist thermal management mode where the ten-way valve 12 cannot achieve the mixed water mode, that is, the third interface of the ten-way valve 12 and the fourth interface of the ten-way valve 12 are connected. A one-way water valve 21 and two three-way water channel interfaces can be added on the basis of Figure 18 to achieve the same function.

[0251] In one embodiment of the present application, when the ten-way valve 12 is in the working state g, the corresponding seventh minimalist thermal management mode is provided;

[0252] As shown in FIG20 , the seventh simplified thermal management mode includes the following circuit expressions:

[0253] The refrigerant gas flowing out of the electric compressor 1 flows back to the electric compressor 1 through the water-cooled condenser 2, the liquid storage tank, the second throttling device 5, and the battery cooler 6;

[0254] The coolant flowing out of the water-cooled condenser 2 flows back to the water-cooled condenser 2 through the water heater 14, the second port of the three-way valve 15, the first port of the three-way valve 15, the in-car heater core 9, and the first electronic water pump 13;

[0255] The coolant flowing out of the battery cooler 6 passes through the first interface of the ten-way valve 12, the sixth interface of the ten-way valve 12, the second electronic water pump 17, the electric drive and electronic control assembly 22, the seventh interface of the ten-way valve 12, the ninth interface of the ten-way valve 12, the third electronic water pump 19, the battery assembly 20, the tenth interface of the ten-way valve 12, and the second interface of the ten-way valve 12, and flows back to the battery cooler 6.

[0256] Here, the seventh minimalist thermal management mode can be used for passenger compartment heating in spring and autumn and winter, and can be used for electric drive and electronically controlled heating batteries.

[0257] A third aspect of the present application provides a control method for a minimalist thermal management system of an electric vehicle, wherein the minimalist thermal management system includes a refrigerant circuit, provided with an electric compressor 1, a water-cooled condenser 2, a liquid storage tank, a first throttling device 4, a second throttling device 5, a battery cooler 6, and an in-vehicle evaporator 8;

[0258] The passenger compartment circuit is provided with an in-car heater core 9, a first electronic water pump 13, a water heater 14, and a high-temperature heat exchanger 16;

[0259] The electric drive and electric control circuit is provided with a second electronic water pump 17, a low-temperature heat exchanger 18, and an electric drive and electric control assembly 22;

[0260] The battery circuit is provided with a third electronic water pump 19 and a battery assembly 20;

[0261] The control piping system is equipped with a three-way valve 15 and a ten-way valve 12;

[0262] The control method couples the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit based on the three-way valve 15 and the ten-way valve 12, so that the electric vehicle's minimalist thermal management system provides corresponding thermal management modes when the ten-way valve 12 is in different working states.

[0263] Here, through this control method, the refrigerant circuit, the passenger compartment circuit, the electric drive and electronic control circuit, and the battery circuit can be coupled and utilized to maximize the energy efficiency of the system. The endurance mode can also be improved for low-temperature environments in winter. The integrated functions of valve bodies such as ten-way valves can be used to reduce the number of thermal management components and pipelines in the vehicle, which is more conducive to the layout and aesthetics of the vehicle, especially the front cabin.

[0264] This application proposes an electric vehicle, comprising:

[0265] passenger compartment;

[0266] A power system; and a simplified thermal management system for electric vehicles, characterized by comprising:

[0267] The refrigerant circuit is provided with an electric compressor 1, a water-cooled condenser 2, a liquid storage tank, a first throttling device 4, a second throttling device 5, a battery cooler 6, and an in-vehicle evaporator 8;

[0268] The passenger compartment circuit is provided with an in-car heater core 9, a first electronic water pump 13, a water heater 14, and a high-temperature heat exchanger 16;

[0269] The electric drive and electric control circuit is provided with a second electronic water pump 17, a low-temperature heat exchanger 18, and an electric drive and electric control assembly 22;

[0270] The battery circuit is provided with a third electronic water pump 19 and a battery assembly 20;

[0271] The control piping system is equipped with a three-way valve 15 and a ten-way valve 12;

[0272] The three-way valve 15 and the ten-way valve 12 couple the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit to form a minimalist thermal management system for the electric vehicle to provide corresponding thermal management modes when the ten-way valve 12 is in different working states.

[0273] This application can provide a minimalist thermal management mode for electric vehicles, which is beneficial to improving the battery life of electric vehicles in winter, cooling the passenger compartment in summer, dehumidification in spring and autumn, and utilizing the ambient temperature, battery temperature, and electric drive and electronic control temperature. It can also realize electric drive and electronic control waste heat recovery, electric drive and electronic control battery combined waste heat recovery, and electric drive and electronic control heating battery functions.

[0274] Systems and methods have been generally described herein in detail to facilitate understanding of the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of these specific details, or with other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0275] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom from modification, various changes and substitutions are contemplated within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the claimed invention. Thus, many modifications may be made to adapt a particular situation or material to the true scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the claims and / or to the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims.

Claims

1. A minimalist thermal management system for electric vehicles, comprising: A refrigerant circuit is provided with an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator; The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger; The electric drive and electric control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electric control assembly; The battery circuit is equipped with a third electronic water pump and a battery assembly; The control piping system is equipped with a three-way valve and a ten-way valve; The three-way valve and the ten-way valve couple the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit to form a minimalist thermal management system for the electric vehicle to provide corresponding thermal management modes when the ten-way valve is in different working states.

2. The electric vehicle minimalist thermal management system according to claim 1, wherein: The three-way valve has a first interface, a second interface and a third interface; The first interface of the three-way valve is connected to the in-vehicle heater core, the second interface of the three-way valve is connected to the water heater, and the third interface of the three-way valve is connected to the high-temperature heat exchanger and the ten-way valve.

3. The electric vehicle minimalist thermal management system according to claim 1, wherein: The ten-way valve has a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, an eighth interface, a ninth interface and a tenth interface; The first interface of the ten-way valve is connected to the battery cooler, the second interface of the ten-way valve is connected to the battery cooler, the third interface of the ten-way valve is connected to the junction of the inlet of the first electronic water pump and the outlet of the in-vehicle heater core; the fourth interface of the ten-way valve is connected to the junction of the third interface of the three-way valve and the inlet of the high-temperature heat exchanger; the fifth interface of the ten-way valve is connected to the high-temperature heat exchanger, the sixth interface of the ten-way valve is connected to the second electronic water pump, the seventh interface of the ten-way valve is connected to the junction of the outlet of the electric drive and electronic control assembly and the inlet of the low-temperature heat exchanger, the eighth interface of the ten-way valve is connected to the low-temperature heat exchanger, the ninth interface of the ten-way valve is connected to the third electronic water pump, and the tenth interface of the ten-way valve is connected to the battery assembly.

4. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state a, a corresponding first minimalist thermal management mode is provided; The circuit performance of the first minimalist thermal management mode includes: The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths, one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor; The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second interface of the three-way valve, the first interface of the three-way valve, the high-temperature heat exchanger, the fifth interface of the ten-way valve, the third interface of the ten-way valve, and the first electronic water pump; The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve; The coolant flowing out of the electric drive and electronic control assembly passes through the low-temperature heat exchanger, the 8th interface of the ten-way valve, the 6th interface of the ten-way valve, and the second electronic water pump and flows back to the electric drive and electronic control assembly.

5. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state b, a corresponding second minimalist thermal management mode is provided; The circuit performance of the second minimalist thermal management mode includes: The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths, one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor; The coolant flowing out of the water-cooled condenser passes through the water heater, the second interface of the three-way valve, the third interface of the three-way valve, the high-temperature heat exchanger, the fifth interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the low-temperature heat exchanger, the eighth interface of the ten-way valve, the third interface of the ten-way valve, and the first electronic water pump and flows back to the water-cooled condenser; The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve.

6. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state c, a corresponding third minimalist thermal management mode is provided; The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the first throttling device, and the in-vehicle evaporator; The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second interface of the three-way valve, the first interface of the three-way valve, the in-vehicle heater core, and the first electronic water pump; The coolant flowing out of the battery cooler passes through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the low-temperature heat exchanger, the eighth interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve, and flows back to the battery cooler.

7. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state d, a corresponding fourth minimalist thermal management mode is provided; The circuit performance of the fourth minimalist thermal management mode includes: The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths, one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor; The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second interface of the three-way valve, the first interface of the three-way valve, the in-vehicle heater core, and the first electronic water pump; The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the fourth interface of the ten-way valve, the high-temperature heat exchanger, the fifth interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve, and the second interface of the ten-way valve; The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

8. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state e, a corresponding fifth minimalist thermal management mode is provided; The circuit performance of the fifth minimalist thermal management mode includes: The refrigerant gas flowing out of the electric compressor passes through the water-cooled condenser and the liquid storage tank and is divided into two paths, one path passes through the first throttling device and flows out of the in-vehicle evaporator, and the other path passes through the second throttling device and flows out of the battery cooler; the refrigerant flowing out of the in-vehicle evaporator and the refrigerant flowing out of the battery cooler merge and flow back to the electric compressor; The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second interface of the three-way valve, the first interface of the three-way valve, the in-vehicle heater core, and the first electronic water pump; The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve, and the second interface of the ten-way valve; The coolant flowing out of the battery assembly flows back to the battery assembly through the 10th interface of the ten-way valve, the 9th interface of the ten-way valve, and the third electronic water pump.

9. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state f, a corresponding sixth minimalist thermal management mode is provided; The circuit performance of the sixth minimalist thermal management mode includes: The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler; The coolant flowing out of the water-cooled condenser is divided into two paths after passing through the water heater. One path flows out through the second interface of the three-way valve, the third interface of the three-way valve, the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the third interface of the ten-way valve; the other path flows out through the second interface of the three-way valve, the first interface of the three-way valve, and the in-vehicle heater core. The coolant flowing out through the third interface of the ten-way valve and the coolant flowing out through the in-vehicle heater core are combined and flow back to the water-cooled condenser through the first electronic water pump. The coolant flowing out of the battery cooler flows back to the battery cooler through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve 12, and the second interface of the ten-way valve 12. The coolant flowing out of the battery assembly not only merges with the coolant flowing out of the third interface of the ten-way valve and the coolant flowing out of the in-vehicle heater core, but also flows back to the battery assembly through the fourth interface of the ten-way valve, the ninth interface of the ten-way valve, and the third electronic water pump.

10. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, comprising: When the ten-way valve is in working state g, a corresponding seventh minimalist thermal management mode is provided; The seventh minimalist thermal management mode circuit performance includes: The refrigerant gas flowing out of the electric compressor flows back to the electric compressor through the water-cooled condenser, the liquid storage tank, the second throttling device, and the battery cooler; The coolant flowing out of the water-cooled condenser flows back to the water-cooled condenser through the water heater, the second interface of the three-way valve, the first interface of the three-way valve, the in-vehicle heater core, and the first electronic water pump; The coolant flowing out of the battery cooler passes through the first interface of the ten-way valve, the sixth interface of the ten-way valve, the second electronic water pump, the electric drive and electronic control assembly, the seventh interface of the ten-way valve, the ninth interface of the ten-way valve, the third electronic water pump, the battery assembly, the tenth interface of the ten-way valve, and the second interface of the ten-way valve, and flows back to the battery cooler.

11. The electric vehicle minimalist thermal management system according to any one of claims 1 to 3, wherein: One or more of the following locations are equipped with temperature and pressure sensors, including: a first temperature and pressure sensor, disposed between the electric compressor and the battery cooler; The second temperature and pressure sensor is arranged between the electric compressor and the water-cooled condenser.

12. A control method for a minimalist thermal management system of an electric vehicle, wherein: The minimalist thermal management system includes a refrigerant circuit, which is provided with an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator; The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger; The electric drive and electric control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electric control assembly; The battery circuit is equipped with a third electronic water pump and a battery assembly; The control piping system is equipped with a three-way valve and a ten-way valve; The control method couples the refrigerant circuit, the passenger compartment circuit, the electric drive and electric control circuit, and the battery circuit based on the three-way valve and the ten-way valve so that the electric vehicle's minimalist thermal management system provides corresponding thermal management modes when the ten-way valve is in different working states.

13. An electric vehicle, comprising: Passenger compartment; Powertrain; And a simplified thermal management system for electric vehicles, characterized by including: A refrigerant circuit is provided with an electric compressor, a water-cooled condenser, a liquid storage tank, a first throttling device, a second throttling device, a battery cooler, and an in-vehicle evaporator; The passenger compartment circuit is equipped with an in-car heater core, a first electronic water pump, a water heater, and a high-temperature heat exchanger; The electric drive and electric control circuit is equipped with a second electronic water pump, a low-temperature heat exchanger, and an electric drive and electric control assembly; The battery circuit is equipped with a third electronic water pump and a battery assembly; The control piping system is equipped with a three-way valve and a ten-way valve; The three-way valve and the ten-way valve couple the refrigerant circuit, the passenger compartment circuit, the electric drive and control circuit, and the battery circuit to form a minimalist thermal management system for the electric vehicle to provide corresponding thermal management modes when the ten-way valve is in different working states.

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