Thermal management system of vehicle and vehicle

Abstract

The invention provides a thermal management system of a vehicle and the vehicle, and belongs to the technical field of vehicles. The thermal management system is mainly provided with a first flow path, a second flow path, a third flow path and a fourth flow path. The two ends of the first flow path and the two ends of the second flow path are correspondingly connected with the engine circulating water path and the motor circulating water path, and therefore under the condition that the opening degree of the first flow path and the opening degree of the second flow path are both larger than 0, the engine circulating water path and the motor circulating water path are communicated to form a loop. Therefore, mutual heat transfer between the engine circulating water path and the motor circulating water path can be realized. The two ends of the third flow path and the fourth flow path are correspondingly connected with the motor circulating water path and the power battery circulating water path, so that the motor circulating water path and the power battery circulating water path are conducted to form a loop under the condition that the opening degree of the third flow path and the opening degree of the fourth flow path are greater than 0; therefore, mutual heat transfer between the motor circulating water path and the power battery circulating water path can be realized.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and particularly to a thermal management system and a vehicle for a vehicle. Background Art

[0002] For a vehicle or a hybrid vehicle, its power module mainly consists of a power battery circulation system, an electric motor circulation system, and an engine circulation system. Its structure is complex, and each system is independent of each other, lacking mutual cooperation. It is difficult to comprehensively utilize the heating or cooling between each system, increasing the system power consumption and causing energy waste. Summary of the Invention

[0003] The main purpose of the embodiments of this application is to propose a thermal management system and a vehicle for a vehicle. Through the first flow path, the second flow path, the third flow path, and the fourth flow path, the engine circulation water path, the electric motor circulation water path, and the power battery circulation water path can be directly or indirectly connected. Heat transfer can occur between the engine circulation water path, the electric motor circulation water path, and the power battery circulation water path, so that the heating or cooling between the three water paths can be comprehensively utilized, reducing the system power consumption and avoiding energy waste.

[0004] To achieve the above object, the first aspect of the embodiments of this application proposes a thermal management system for a vehicle, including:

[0005] An engine circulation water path;

[0006] An electric motor circulation water path;

[0007] A power battery circulation water path;

[0008] A first flow path and a second flow path, the two ends of the first flow path are correspondingly connected to the engine circulation water path and the electric motor circulation water path, the two ends of the second flow path are correspondingly connected to the engine circulation water path and the electric motor circulation water path, the opening degree of the first flow path can be adjusted, the opening degree of the second flow path can be adjusted. When the opening degrees of both the first flow path and the second flow path are greater than 0, the engine circulation water path and the electric motor circulation water path are conducted to form a loop;

[0009] A third flow path and a fourth flow path, the two ends of the third flow path are correspondingly connected to the electric motor circulation water path and the power battery circulation water path, the two ends of the fourth flow path are correspondingly connected to the electric motor circulation water path and the power battery circulation water path, the opening degree of the third flow path can be adjusted, the opening degree of the fourth flow path can be adjusted. When the opening degrees of both the third flow path and the fourth flow path are greater than 0, the electric motor circulation water path and the power battery circulation water path are conducted to form a loop.

[0010] In one embodiment of the present application, the first flow path and the second flow path are integrated in a first multi-way valve. The first multi-way valve includes a first water outlet, a second water outlet, a first water inlet, and a second water inlet. The first flow path is formed between the first water inlet and the first water outlet, and the second flow path is formed between the second water inlet and the second water outlet;

[0011] The third flow path and the fourth flow path are integrated in a second multi-way valve. The second multi-way valve includes a third water outlet, a fourth water outlet, a third water inlet, and a fourth water inlet. The third flow path is formed between the third water inlet and the third water outlet, and the fourth flow path is formed between the fourth water inlet and the fourth water outlet.

[0012] In one embodiment of the present application, the engine circulating water path includes a first water pump for driving liquid to circulate along the engine circulating water path;

[0013] The motor circulating water path includes a second water pump for driving liquid to circulate along the motor circulating water path;

[0014] The power battery circulating water path includes a third water pump for driving liquid to circulate along the power battery circulating water path;

[0015] The water outlet end of the first water pump is communicated with the first water inlet, the first water outlet is communicated with the water inlet end of the second water pump, the water outlet end of the second water pump is communicated with the second water inlet, and the second water outlet is communicated with the water inlet end of the first water pump;

[0016] The water outlet end of the second water pump is further communicated with the third water inlet, the third water outlet is communicated with the water inlet end of the third water pump, the water inlet end of the second water pump is further communicated with the fourth water outlet, and the fourth water inlet is communicated with the water outlet end of the third water pump.

[0017] In one embodiment of the present application, the engine circulating water path further includes an engine. The water inlet end of the engine is communicated with the water outlet end of the first water pump, and the water outlet end of the engine is communicated with the water inlet end of the first water pump to form a first engine circulating water path;

[0018] The water outlet end of the engine is communicated with the first water inlet of the first multi-way valve.

[0019] In one embodiment of the present application, the first multi-way valve is integrated in the outer housing of the engine.

[0020] In one embodiment of the present application, the engine circulating water path further includes a thermostat and a first radiator;

[0021] One end of the thermostat is communicated with the water outlet end of the engine, the other end of the thermostat is communicated with one end of the first radiator, the other end of the first radiator is communicated with the water inlet end of the first water pump, and the water outlet end of the first water pump is communicated with the water inlet end of the engine to form a second engine circulation water path;

[0022] The first engine circulation water path and the second engine circulation water path share the engine and the first water pump.

[0023] In an embodiment of the present application, the engine circulation water path further includes a water injection container, and the water injection container is provided with an air overflow valve;

[0024] The other end of the first radiator is further communicated with the water injection container through a gas pipeline, and the water injection container is communicated with the water outlet end of the first water pump through a liquid pipeline.

[0025] In an embodiment of the present application, the motor circulation water path further includes a generator, a generator controller and a second radiator;

[0026] The water outlet end of the second water pump is communicated with one end of the generator controller, the other end of the generator controller is communicated with the water inlet end of the generator, the water outlet end of the generator is communicated with one end of the second radiator, and the other end of the second radiator is communicated with the water inlet end of the second water pump to form a generator circulation water path;

[0027] The water outlet end of the generator is further communicated with the second water inlet of the first multi-way valve.

[0028] In an embodiment of the present application, the motor circulation water path further includes a drive motor and a drive motor controller;

[0029] The water outlet end of the second water pump is further communicated with one end of the drive motor controller, the other end of the drive motor controller is communicated with the water inlet end of the drive motor, the water outlet end of the drive motor is communicated with one end of the second radiator, and the other end of the second radiator is communicated with the water inlet end of the second water pump to form a drive motor circulation water path;

[0030] The water outlet end of the drive motor is further communicated with the third water inlet of the second multi-way valve;

[0031] The generator circulation water path and the drive motor circulation water path share the second radiator and the second water pump.

[0032] In an embodiment of the present application, the first multi-way valve is integrated in the outer shell of the engine.

[0033] In one embodiment of the present application, the power battery circulation water path further includes a power battery and a water heater;

[0034] The water outlet end of the third water pump is communicated with one end of the water heater, the other end of the water heater is communicated with the water inlet end of the power battery, and the water outlet end of the power battery is communicated with the water inlet end of the third water pump to form a power battery heating circulation water path;

[0035] The water inlet end of the power battery is communicated with the third water outlet of the second multi-way valve.

[0036] In one embodiment of the present application, the power battery circulation water path further includes a refrigerant heat exchanger;

[0037] The water outlet end of the third water pump is communicated with one end of the refrigerant heat exchanger, the other end of the refrigerant heat exchanger is communicated with the water inlet end of the power battery, and the water outlet end of the power battery is communicated with the water inlet end of the third water pump to form a power battery cooling circulation water path;

[0038] The power battery heating circulation water path and the power battery cooling circulation water path share the power battery and the third water pump.

[0039] In one embodiment of the present application, the power battery circulation water path further includes a liquid storage tank, a condenser and a compressor;

[0040] The liquid storage tank, the condenser, the compressor and the refrigerant heat exchanger are sequentially communicated through pipelines to form a cooling circuit;

[0041] The cooling circuit and the power battery cooling circulation water path share the refrigerant heat exchanger.

[0042] In one embodiment of the present application, both the first multi-way valve and the second multi-way valve are four-way valves. The four-way valve includes a valve body and a valve core. The valve body is provided with the first water outlet, the second water outlet, the first water inlet and the second water inlet. The valve core is arranged in the valve body to control the opening degrees of the first water outlet, the second water outlet, the first water inlet and the second water inlet.

[0043] To achieve the above object, a first aspect of the embodiments of the present application provides a vehicle, including the thermal management system provided in any embodiment of the present application.

[0044] In the technical solution provided by the embodiments of the present application, the thermal management system includes an engine circulation waterway, a motor circulation waterway, a power battery circulation waterway, a first flow path, a second flow path, a third flow path, and a fourth flow path. Among them, the two ends of the first flow path are correspondingly connected to the engine circulation waterway and the motor circulation waterway, and the two ends of the second flow path are correspondingly connected to the engine circulation waterway and the motor circulation waterway. The opening degree of the first flow path can be adjusted, and the opening degree of the second flow path can be adjusted. Thus, when the opening degrees of both the first flow path and the second flow path are greater than 0, the engine circulation waterway and the motor circulation waterway are conducted to form a loop, so that the heat can be mutually transferred between the engine circulation waterway and the motor circulation waterway. The two ends of the third flow path are correspondingly connected to the motor circulation waterway and the power battery circulation waterway, and the two ends of the fourth flow path are correspondingly connected to the motor circulation waterway and the power battery circulation waterway. The opening degree of the third flow path can be adjusted, and the opening degree of the fourth flow path can be adjusted. Thus, when the opening degrees of both the third flow path and the fourth flow path are greater than 0, the motor circulation waterway and the power battery circulation waterway are conducted to form a loop, so that the heat can be mutually transferred between the motor circulation waterway and the power battery circulation waterway. By comprehensively utilizing the heating or cooling among the three waterways, the system power consumption can be reduced and energy waste can be avoided. Description of the Drawings

[0045] Figure 1 is a schematic structural diagram of the thermal management system of the vehicle provided by the embodiments of the present application;

[0046] Figure 2 is a schematic structural diagram of the first multi-way valve provided by the embodiments of the present application;

[0047] Figure 3 is a schematic connection diagram of the thermal management system of the vehicle under the first working condition provided by the embodiments of the present application;

[0048] Figure 4 is a schematic connection diagram of the thermal management system of the vehicle under the second working condition provided by the embodiments of the present application;

[0049] Figure 5 is a schematic connection diagram of the thermal management system of the vehicle under the third working condition provided by the embodiments of the present application;

[0050] Figure 6 is a schematic connection diagram of the thermal management system of the vehicle under the fourth working condition provided by the embodiments of the present application.

[0051] Description of the Reference Numerals:

[0052] Engine circulating waterway - 1; Motor circulating waterway - 2; Power battery circulating waterway - 3; First multi-way valve - 4; Second multi-way valve - 5; First water outlet - 41; Second water outlet - 42; First water inlet - 43; Second water inlet - 44; First water pump - 11; Engine - 12; Thermostat - 13; First radiator - 14; Water injection container - 15; Second water pump - 21; Generator - 22; Generator controller - 23; Second radiator - 24; Drive motor - 25; Drive motor controller - 26; Third water pump - 31; Power battery - 32; Water heater - 33; Refrigerant heat exchanger - 34; Liquid storage tank - 35; Condenser 36; Compressor - 37. Detailed implementation manners

[0053] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] It should be noted that although functional module division is performed in the device schematic diagram and the logical sequence is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from the module division in the device or the sequence in the flowchart. Terms such as "first" and "second" in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0056] In recent years, the vehicle industry in our country has developed rapidly. However, at the same time, global environmental pollution has become increasingly serious. In order to cope with the increasing pollution pressure, our country has introduced extremely strict National VI emission regulations and corresponding strict fuel consumption standards. In order to meet the requirements of national regulations, major vehicle manufacturers have actively engaged in the development of hybrid vehicles and electric vehicles. Due to the limited driving range of pure electric vehicles and the inclination of national policies, range-extended electric vehicles have received increasing favor from vehicle manufacturers and are being developed one after another.

[0057] For range-extended electric vehicles, their power modules are mainly composed of a power battery circulation system, a motor circulation system, and an engine circulation system. Their structures are complex, each system is independent of each other, lacking mutual cooperation, and it is difficult to comprehensively utilize the heating or cooling between each system, increasing system power consumption and causing energy waste.

[0058] Based on this, an embodiment of the present application provides a thermal management system for a vehicle. Through the first flow path, the second flow path, the third flow path, and the fourth flow path, the engine coolant circuit, the motor coolant circuit, and the power battery coolant circuit can be directly or indirectly connected, enabling heat transfer between the three circuits. Thus, the heating or cooling among the three circuits can be comprehensively utilized, reducing system power consumption and avoiding energy waste.

[0059] Referring to Figure 1 , Figure 1 is a schematic structural diagram of the thermal management system for a vehicle provided by an embodiment of the present application. As shown by Figure 1As shown in the figure, the thermal management system includes an engine cooling water circuit 1, a motor cooling water circuit 2, a power battery cooling water circuit 3, a first flow path a, a second flow path b, a third flow path d, and a fourth flow path c. Among them, both ends of the first flow path a are correspondingly connected to the engine cooling water circuit 1 and the motor cooling water circuit 2, and both ends of the second flow path b are correspondingly connected to the engine cooling water circuit 1 and the motor cooling water circuit 2, that is, the engine cooling water circuit 1 and the motor cooling water circuit 2 are interconnected through the first flow path a and the second flow path b. The opening degree of the first flow path a can be adjusted, and the opening degree of the second flow path b can be adjusted. Thus, when the opening degrees of both the first flow path a and the second flow path b are greater than 0, the engine cooling water circuit 1 and the motor cooling water circuit 2 can be conducted to form a loop, so that heat transfer between the engine cooling water circuit 1 and the motor cooling water circuit 2 can be realized. Both ends of the third flow path d are correspondingly connected to the motor cooling water circuit 2 and the power battery cooling water circuit 3, and both ends of the fourth flow path c are correspondingly connected to the motor cooling water circuit 2 and the power battery cooling water circuit 3, that is, the motor cooling water circuit 2 and the power battery cooling water circuit 3 are interconnected through the third flow path d and the fourth flow path c. The opening degree of the third flow path d can be adjusted, and the opening degree of the fourth flow path c can be adjusted. Thus, when the opening degrees of both the third flow path and the fourth flow path are greater than 0, the motor cooling water circuit and the power battery cooling water circuit can be conducted to form a loop, so that heat transfer between the motor cooling water circuit 2 and the power battery cooling water circuit 3 can be realized. For example, when there is not enough waste heat in the motor cooling water circuit 2, relatively high-temperature liquid in the engine cooling water circuit 1 can be flowed into the motor cooling water circuit 2 by adjusting the first flow path a. At the same time, when it is necessary to assist in cooling the engine, relatively low-temperature liquid in the motor cooling water circuit 2 can be flowed into the engine cooling water circuit 1 by adjusting the second flow path b. For example, when it is necessary to heat the power battery, relatively high-temperature liquid in the motor cooling water circuit 2 can be flowed into the power battery cooling water circuit 3 by adjusting the third flow path d. In this way, through the first flow path a, the second flow path b, the third flow path d, and the fourth flow path c, the engine cooling water circuit 1, the motor cooling water circuit 2, and the power battery cooling water circuit 3 can be directly or indirectly connected, and heat transfer can be carried out among the engine cooling water circuit, the motor cooling water circuit, and the power battery cooling water circuit, so that the heating or cooling among the three water circuits can be comprehensively utilized, the system power consumption can be reduced, and energy waste can be avoided.

[0060] In an embodiment of the present application, the first flow path a and the second flow path b are integrated in a first multi-way valve 4, and the third flow path d and the fourth flow path c are integrated in a second multi-way valve 5. Refer to Figure 2 , Figure 2 which is a schematic structural diagram of the first multi-way valve provided by the embodiment of the present application. Figure 2As shown, the first multi-way valve 4 is provided with a first water outlet 41, a second water outlet 42, a first water inlet 43 and a second water inlet 44. In the first multi-way valve 4, a first flow path a is formed from the first water inlet 43 to the first water outlet 41, and a second flow path b is formed from the second water inlet 44 to the second water outlet 42. The flow rate of the first flow path a can be adjusted, and the flow rate of the second flow path b can be adjusted.

[0061] In the embodiment of the present application, a first flow path a is formed from the first water inlet 43 to the first water outlet 41, and a second flow path b is formed from the second water inlet 44 to the second water outlet 42. That is, through the design of two flow paths, the mutual connection in two directions can be realized.

[0062] In an embodiment of the present application, the opening degree of at least one of the first water outlet 41 and the first water inlet 43 can be adjusted so that the opening degree of the first flow path a changes accordingly. The opening degree of at least one of the second water outlet 42 and the second water inlet 44 can be adjusted so that the opening degree of the second flow path b changes accordingly.

[0063] In the embodiment of the present application, by adjusting the opening degree of any one of the first water outlet 41 and the first water inlet 43, the adjustment of the opening degree of the first flow path a can be realized. By adjusting the opening degree of any one of the second water outlet 42 and the second water inlet 44, the adjustment of the opening degree of the second flow path b can be realized.

[0064] In an embodiment of the present application, the first multi-way valve 4 is a four-way valve. The four-way valve includes a valve body and a valve core. The valve body is provided with a first water outlet 41, a second water outlet 42, a first water inlet 43 and a second water inlet 44. The valve core is arranged in the valve body to control the opening degrees of the first water outlet 41, the second water outlet 42, the first water inlet 43 and the second water inlet 44.

[0065] It should be noted that the embodiment of the present application does not specifically limit the first multi-way valve 4, as long as it is provided with a first water outlet 41, a second water outlet 42, a first water inlet 43 and a second water inlet 44, and a first flow path a is formed from the first water inlet 43 to the first water outlet 41 in the first multi-way valve 4, and a second flow path b is formed from the second water inlet 44 to the second water outlet 42. For example, in addition to being a four-way valve, the first multi-way valve 4 can also be a five-way valve, a six-way valve, an eight-way valve, etc.

[0066] In the embodiment of the present application, the structure of the second multi-way valve 5 is the same as that of the first multi-way valve 4. Specifically, the second multi-way valve 5 is provided with a third water outlet, a fourth water outlet, a third water inlet and a fourth water inlet. In the second multi-way valve, a third flow path d is formed from the third water inlet to the third water outlet, and a fourth flow path c is formed from the fourth water inlet to the fourth water outlet. The opening degree of the third flow path d can be adjusted, and the opening degree of the fourth flow path c can be adjusted.

[0067] In the embodiments of the present application, similarly, a third flow path d is formed from the third water inlet to the third water outlet, and a fourth flow path c is formed from the fourth water inlet to the fourth water outlet. That is, through the design of two flow paths, mutual connection in two directions can be achieved.

[0068] In an embodiment of the present application, the opening degree of at least one of the third water outlet and the third water inlet can be adjusted so that the opening degree of the third flow path d changes accordingly. The opening degree of at least one of the fourth water outlet and the fourth water inlet can be adjusted so that the opening degree of the fourth flow path c changes accordingly.

[0069] In the embodiments of the present application, similarly, by adjusting the opening degree of any one of the third water outlet and the third water inlet, the adjustment of the opening degree of the third flow path d can be achieved. By adjusting the opening degree of any one of the fourth water outlet and the fourth water inlet, the adjustment of the opening degree of the fourth flow path c can be achieved.

[0070] In an embodiment of the present application, the second multi-way valve 5 is also a four-way valve. The four-way valve includes a valve body and a valve core. The valve body is provided with a third water outlet, a fourth water outlet, a third water inlet, and a fourth water inlet. The valve core is arranged in the valve body to control the opening degrees of the third water outlet, the fourth water outlet, the third water inlet, and the fourth water inlet.

[0071] It should be noted that, similarly, the embodiments of the present application do not specifically limit the second multi-way valve 5. As long as it is provided with a third water outlet, a fourth water outlet, a third water inlet, and a fourth water inlet, and a third flow path d is formed from the third water inlet to the third water outlet and a fourth flow path c is formed from the fourth water inlet to the fourth water outlet in the second multi-way valve 5. For example, in addition to being a four-way valve, the second multi-way valve 5 can also be a five-way valve, a six-way valve, an eight-way valve, etc.

[0072] Such as Figure 1 and Figure 2As shown, the engine circulating water path 1 includes a first water pump 11 for driving liquid to circulate along the engine circulating water path 1. The motor circulating water path 2 includes a second water pump 21 for driving liquid to circulate along the motor circulating water path 2. Among them, the water outlet end of the first water pump 11 is communicated with the first water inlet 43, the first water outlet 41 is communicated with the water inlet end of the second water pump 21, the water outlet end of the second water pump 21 is communicated with the second water inlet 44, and the second water outlet 42 is communicated with the water inlet end of the first water pump 11. That is, the liquid in the engine circulating water path 1 can flow into the motor circulating water path 2 through the first flow path a formed from the first water inlet 43 to the first water outlet 41, and then circulate in the motor circulating water path 2 under the drive of the second water pump 21 in the motor circulating water path 2. At the same time, the liquid in the motor circulating water path 2 can flow into the engine circulating water path 1 through the second flow path b formed from the second water inlet 44 to the second water outlet 42, and then circulate in the engine circulating water path 1 under the drive of the first water pump 11 in the engine circulating water path 1. Thus, the mutual connection between the engine circulating water path 1 and the motor circulating water path 2 is realized to achieve the mutual transfer of heat between the engine circulating water path 1 and the motor circulating water path 2.

[0073] As Figure 1 shown, the motor circulating water path 2 includes a second water pump 21 for driving liquid to circulate along the motor circulating water path 2. The power battery circulating water path 3 includes a third water pump 31 for driving liquid to circulate along the power battery circulating water path 3. Among them, the water outlet end of the second water pump 21 is also communicated with the third water inlet, the third water outlet is communicated with the water inlet end of the third water pump 31, the water inlet end of the second water pump 21 is also communicated with the fourth water outlet, and the fourth water inlet is communicated with the water outlet end of the third water pump 31. That is, the liquid in the motor circulating water path 2 can flow into the power battery circulating water path 3 through the third flow path d formed from the third water inlet to the third water outlet, and then circulate in the power battery circulating water path 3 under the drive of the third water pump 31 in the power battery circulating water path 3. At the same time, the liquid in the power battery circulating water path 3 can flow into the motor circulating water path 2 through the fourth flow path c formed from the fourth water inlet to the fourth water outlet, and then circulate in the motor circulating water path 2 under the drive of the second water pump 21 in the motor circulating water path 2. Thus, the mutual connection between the motor circulating water path 2 and the power battery circulating water path 3 is realized to achieve the mutual transfer of heat between the motor circulating water path 2 and the power battery circulating water path 3.

[0074] Referring Figure 1, the engine circulating water path 1 includes the engine first circulating water path and the engine second circulating water path. Among them, the engine first circulating water path includes the engine 12 and the first water pump 11. Among them, the water inlet end of the engine 12 is communicated with the water outlet end of the first water pump 11 through a pipeline, the water outlet end of the engine 12 is communicated with the water inlet end of the first water pump 11 through a pipeline, and the water outlet end of the engine 12 is communicated with the first water inlet of the first multi-way valve 4. The second circulating water path includes the engine 12, the thermostat 13, the first radiator 14 and the first water pump 11. Among them, the water outlet end of the engine 12 is communicated with one end of the thermostat 13, the other end of the thermostat 13 is communicated with one end of the first radiator 14, the other end of the first radiator 14 is communicated with the water inlet end of the first water pump 11, and the water outlet end of the first water pump 11 is communicated with the water inlet end of the engine 12.

[0075] In the embodiment of the present application, the engine first circulating water path and the engine second circulating water path share the engine 12 and the first water pump 11. When the engine is hot, starting or the load is very small, the engine first circulating water path is implemented. When the load of the engine 12 is large and a large amount of heat requires the first radiator 14 to dissipate heat through the fan, at this time the thermostat 13 is opened and the engine second circulating water path is implemented.

[0076] Refer to Figure 1 , the motor circulating water path 2 includes the generator circulating water path and the drive motor circulating water path. Among them, the generator circulating water path includes the generator 22, the generator controller 23, the second water pump 21 and the second radiator 24; the water outlet end of the second water pump 21 is communicated with one end of the generator controller 23, the other end of the generator controller 23 is communicated with the water inlet end of the generator 22, the water outlet end of the generator 22 is communicated with one end of the second radiator 24, and the other end of the second radiator 24 is communicated with the water inlet end of the second water pump 21. The water outlet end of the generator 22 is also communicated with the second water inlet of the first multi-way valve 4. The drive motor circulating water path includes the drive motor 25, the drive motor controller 26, the second water pump 21 and the second radiator 24. Among them, the water outlet end of the second water pump 21 is also communicated with one end of the drive motor controller 26, the other end of the drive motor controller 26 is communicated with the water inlet end of the drive motor 25, the water outlet end of the drive motor 25 is communicated with one end of the second radiator 24, and the other end of the second radiator 24 is communicated with the water inlet end of the second water pump 21. Among them, the water outlet end of the drive motor 25 is also communicated with the third water inlet of the second multi-way valve 5. The motor circulating water path and the drive motor circulating water path share the second radiator 24 and the second water pump 21. The heat generated by the generator, the generator controller, the drive motor and the drive motor controller can all be released through the second radiator.

[0077] In the embodiments of the present application, since the engine circulating water path 1 and the motor circulating water path 2 can be interconnected through the first multi-way valve 4, when a specific fault occurs in the motor circulating water path 2 (such as damage to the radiator or pipeline, resulting in too low flow rate entering the second water pump 21), by diverting a part of the high-temperature coolant flow in the engine circulating water path 1 into the motor circulating water path 2, it can play a role in protecting the safety of the generator controller and the drive motor controller. When the generator controller needs to work independently for heating, the liquid in the motor circulating water path 2 can be made to flow into the first engine circulating water path for rapid warm-up.

[0078] Referring to Figure 1 , the power battery circulating water path 3 includes a power battery heating circulating water path, a power battery cooling circulating water path, and a cooling circuit. Among them, the power battery heating circulating water path includes a third water pump 31, a power battery 32, and a water heater 33. Among them, the water outlet end of the third water pump 31 is connected to one end of the water heater 33, the other end of the water heater 33 is connected to the water inlet end of the power battery 32, and the water outlet end of the power battery 32 is connected to the water inlet end of the third water pump 31. Among them, the water inlet end of the power battery 32 is connected to the third water outlet of the second multi-way valve 5. The power battery cooling circulating water path includes a third water pump 31, a power battery 32, and a refrigerant heat exchanger 34. Among them, the water outlet end of the third water pump 31 is connected to one end of the refrigerant heat exchanger 34, the other end of the refrigerant heat exchanger 34 is connected to the water inlet end of the power battery 32, and the water outlet end of the power battery 32 is connected to the water inlet end of the third water pump 31. The cooling circuit includes a liquid storage tank 35, a condenser 36, a compressor 37, and a refrigerant heat exchanger 34. Among them, the liquid storage tank 35, the condenser 36, the compressor 37, and the refrigerant heat exchanger 34 are connected in sequence through pipelines. The power battery heating circulating water path and the power battery cooling circulating water path share the power battery 32 and the third water pump 31. When the ambient temperature at which the power battery operates is relatively low and the power battery needs to be preheated, by operating the power battery heating circulating water path, that is, by heating the coolant in the circulating water path through the water heater 33, it is ensured that the power battery operates at an appropriate temperature. The cooling circuit and the power battery cooling circulating water path share the refrigerant heat exchanger 34. When the ambient temperature at which the power battery operates is relatively high and the power battery needs to be cooled down, by operating the power battery cooling circulating water path and the cooling circuit, that is, by reducing the temperature of the coolant in the circulating water path through the refrigerant heat exchanger 34, the power battery is cooled down.

[0079] In the embodiment of the present application, since the motor circulating water path 2 and the power battery circulating water path 3 can be interconnected through the second multi-way valve 5, when it is necessary to preheat the power battery, the medium-temperature coolant in the motor circulating water path 2 can be made to flow into the water inlet end of the power battery 32 in the power battery circulating water path 3, so as to assist in preheating the power battery, reduce the working energy consumption of the water heater (WPTC), and improve the economy of the whole vehicle. When a specific fault occurs in the power battery circulating water path 3 (such as the failure of the water heater or the damage of the pipeline after the third water pump 31 resulting in no circulating water flow), by making part of the medium-temperature coolant in the motor circulating water path 2 flow into the power battery circulating water path 3, it can play a role in protecting the safe operation of the power battery.

[0080] In the embodiment of the present application, when both the first multi-way valve 4 and the second multi-way valve 5 are turned on, the engine circulating water path 1, the motor circulating water path 2, and the power battery circulating water path 3 can be interconnected, and more advanced and rich functional applications can be integrated. For example, the engine circulating water path 1 can be made to flow into the motor circulating water path 2 through the first multi-way valve 4 and then into the water inlet end of the power battery 32 in the power battery circulating water path 3 through the second multi-way valve 5, so as to assist in preheating the power battery, reduce the working energy consumption of the WPTC, and improve the economy of the whole vehicle.

[0081] In an embodiment of the present application, the first multi-way valve 4 can be integrated into the outer housing of the engine 12. This can make the integration degree of the system higher and reduce the pipeline required for connecting the engine circulating water path 1 and the first multi-way valve 4.

[0082] In an embodiment of the present application, when the range extender generator has a water-cooled structure, the first multi-way valve 4 can also be integrated into the outer housing of the generator 22. This can make the integration degree of the system higher and reduce the pipeline required for connecting the motor circulating water path 2 and the first multi-way valve 4.

[0083] Refer to Figure 1 , the engine circulating water path 1 further includes a water injection container 15, and the water injection container 15 is provided with a gas overflow valve. Wherein, the other end of the first radiator 14 is also connected to the water injection container 15 through a gas pipeline, and the water injection container 15 is connected to the water outlet end of the first water pump 11 through a liquid pipeline.

[0084] In the embodiment of the present application, since the engine circulation waterway 1, the motor circulation waterway 2, and the power battery circulation waterway 3 can be interconnected through the first multi-way valve 4 and the second multi-way valve 5, when it is necessary to replenish water to the motor circulation waterway 2 and the power battery circulation waterway 3, water can be first injected into the engine circulation waterway 1 through the water injection container 15 provided on the engine circulation waterway 1, and then flow into the motor circulation waterway 2 and the power battery circulation waterway 3 respectively through the first multi-way valve 4 and the second multi-way valve 5, which can ensure that each circulation waterway will not lack water and overheat due to water seepage or other reasons. And considering that the motor circulation waterway 2 and the power battery circulation waterway 3 generally have a lower temperature, so the motor circulation waterway 2 and the power battery circulation waterway 3 generate very little overflow gas. Even if overflow gas is generated, it will flow through the first multi-way valve 4 and the second multi-way valve 5, and the gas pipeline flowing into the engine circulation waterway 1 will overflow from the water injection container 15. Thus, on the premise that only 1 water injection container 15 is adopted for the whole vehicle, the water injection and overflow gas functions of the three-way circulation waterways of the whole vehicle can still be ensured to be complete, and further the layout requirements and cost pressure of the whole vehicle can be reduced.

[0085] Referring to Figure 3 , Figure 3 is the connection schematic diagram of the vehicle's thermal management system under the first working condition provided by the embodiment of the present application. As Figure 3 shown, the first working condition is the condition where both the first multi-way valve 4 and the second multi-way valve 5 are fully disconnected. Under this condition, the engine circulation waterway 1, the motor circulation waterway 2, and the power battery circulation waterway 3 work independently of each other without interference.

[0086] Referring to Figure 4 , Figure 4 is the connection schematic diagram of the vehicle's thermal management system under the second working condition provided by the embodiment of the present application. As Figure 4 shown, the second working condition is the condition where the first multi-way valve 4 is fully opened and the second multi-way valve 5 is fully disconnected. Under this condition, only the engine circulation waterway 1 and the motor circulation waterway 2 are interconnected, while the motor circulation waterway 2 and the power battery circulation waterway 3 are not connected. At this time, the engine circulation waterway 1 and the motor circulation waterway 2 can form the following connected circulation loop:

[0087] Liquid flows from the water outlet end of the engine 12 through the first flow path a of the first multi-way valve 4 into the second water pump 21, then flows through the generator controller 23 to the generator 22, and then flows from the water outlet end of the generator 22 through the second flow path b of the first multi-way valve 4 into the water inlet end of the first water pump 11, and then flows from the water outlet end of the first water pump to the engine 12.

[0088] Referring to Figure 5 , Figure 5 is the connection schematic diagram of the vehicle's thermal management system under the third working condition provided by the embodiment of the present application. As Figure 5As shown, the third working condition is the condition where the first multi-way valve 4 is fully disconnected and the second multi-way valve 5 is fully opened. In this condition, the engine circulating water path 1 and the motor circulating water path 2 are not connected, while the motor circulating water path 2 and the power battery circulating water path 3 are connected to each other. At this time, the following connected circulation loop can be realized between the motor circulating water path 2 and the power battery circulating water path 3:

[0089] The liquid flows from the water outlet end of the second water pump 21 through the drive motor controller 26 into the drive motor, and then from the water outlet end of the drive motor 25 through the third flow path d of the second multi-way valve 5 into the water inlet end of the power battery 32, and then through the water inlet end of the third water pump 31, and flows out from the water outlet end of the third water pump 31 and through the fourth flow path c of the second multi-way valve 5 into the water inlet end of the second water pump.

[0090] Refer to Figure 6 , Figure 6 is a schematic diagram of the connection of the vehicle's thermal management system under the fourth working condition provided by the embodiment of the present application. As Figure 6 shown, the fourth working condition is the condition where the first multi-way valve 4 is fully opened and the second multi-way valve 5 is fully opened. In this condition, the engine circulating water path 1 and the motor circulating water path 2 are connected to each other, and the motor circulating water path 2 and the power battery circulating water path 3 are connected to each other. At this time, the following connected circulation loop can be realized between the engine circulating water path 1 and the motor circulating water path 2:

[0091] The liquid flows from the water outlet end of the engine 12 through the first flow path a of the first multi-way valve 4 into the second water pump 21, then through the generator controller 23 to the generator 22, and then from the water outlet end of the generator 22 through the second flow path b of the first multi-way valve 4 into the water inlet end of the first water pump 11, and then flows from the water outlet end of the first water pump to the engine 12.

[0092] The following connected circulation loop can be realized between the motor circulating water path 2 and the power battery circulating water path 3:

[0093] The liquid flows from the water outlet end of the second water pump 21 through the drive motor controller 26 into the drive motor, and then from the water outlet end of the drive motor 25 through the third flow path d of the second multi-way valve 5 into the water inlet end of the power battery 32, and then through the water inlet end of the third water pump 31, and flows out from the water outlet end of the third water pump 31 and through the fourth flow path c of the second multi-way valve 5 into the water inlet end of the second water pump.

[0094] In the embodiment of the present application, any one of the first flow path a, the second flow path b in the first multi-way valve 4, the third flow path d and the fourth flow path c in the second multi-way valve can be controlled to be conducted or disconnected according to the control requirements, and the flow rates of the first flow path a, the second flow path b in the first multi-way valve 4, the third flow path d and the fourth flow path c in the second multi-way valve can also be controlled according to the control requirements.

[0095] The present application also provides a vehicle, including the thermal management system according to any embodiment of the present application.

[0096] Since the vehicle provided by the embodiment of the present application includes the thermal management system according to any embodiment of the present application, this thermal management system can achieve the mutual connection between the engine circulation waterway 1, the motor circulation waterway 2, and the power battery circulation waterway 3, thereby being able to cancel two air overflow valves and the water injection container 15, as well as the corresponding pipelines, which not only reduces the overall vehicle layout space but also reduces the component cost. At the same time, after the three-way circulation waterways are interconnected, the waste heat of the whole vehicle can be utilized more efficiently to achieve multi-dimensional functions such as better preheating of the vehicle battery and engine warming-up.

[0097] The embodiments described in the embodiments of the present application are for more clearly explaining the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art know that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0098] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than those shown, or combine certain steps, or different steps.

[0099] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0100] Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and their appropriate combinations.

[0101] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0102] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item) of the following" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0103] In several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0104] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0105] In addition, each functional unit in various embodiments of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0106] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes: various media that can store programs, such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0107] The preferred embodiments of the embodiments of this application have been described above with reference to the accompanying drawings. This does not limit the scope of the rights of the embodiments of this application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of this application shall be within the scope of the rights of the embodiments of this application.

Claims

1. A thermal management system for a vehicle, characterized in that, The system includes: The engine circulating water path; The motor circulating water path; The power battery circulating water path; A first flow path and a second flow path. The two ends of the first flow path are correspondingly connected to the engine circulating water path and the motor circulating water path. The two ends of the second flow path are correspondingly connected to the engine circulating water path and the motor circulating water path. The opening degree of the first flow path can be adjusted, and the opening degree of the second flow path can be adjusted. When the opening degrees of both the first flow path and the second flow path are greater than 0, the engine circulating water path and the motor circulating water path are conducted to form a loop; A third flow path and a fourth flow path. The two ends of the third flow path are correspondingly connected to the motor circulating water path and the power battery circulating water path. The two ends of the fourth flow path are correspondingly connected to the motor circulating water path and the power battery circulating water path. The opening degree of the third flow path can be adjusted, and the opening degree of the fourth flow path can be adjusted. When the opening degrees of both the third flow path and the fourth flow path are greater than 0, the motor circulating water path and the power battery circulating water path are conducted to form a loop.

2. The system according to claim 1, characterized in that: The first flow path and the second flow path are integrated in a first multi-way valve. The first multi-way valve includes a first water outlet, a second water outlet, a first water inlet, and a second water inlet. The first flow path is formed between the first water inlet and the first water outlet, and the second flow path is formed between the second water inlet and the second water outlet; The third flow path and the fourth flow path are integrated in a second multi-way valve. The second multi-way valve includes a third water outlet, a fourth water outlet, a third water inlet, and a fourth water inlet. The third flow path is formed between the third water inlet and the third water outlet, and the fourth flow path is formed between the fourth water inlet and the fourth water outlet.

3. The system according to claim 2, characterized in that: The engine circulating water path includes a first water pump for driving the liquid to circulate along the engine circulating water path; The motor circulating water path includes a second water pump for driving the liquid to circulate along the motor circulating water path; The power battery circulating water path includes a third water pump for driving the liquid to circulate along the power battery circulating water path; The water outlet end of the first water pump is communicated with the first water inlet, the first water outlet is communicated with the water inlet end of the second water pump, the water outlet end of the second water pump is communicated with the second water inlet, and the second water outlet is communicated with the water inlet end of the first water pump; The water outlet end of the second water pump is further communicated with the third water inlet, the third water outlet is communicated with the water inlet end of the third water pump, the water inlet end of the second water pump is further communicated with the fourth water outlet, and the fourth water inlet is communicated with the water outlet end of the third water pump.

4. The system according to claim 3, characterized in that, The engine circulating water path further includes an engine. The water inlet end of the engine is communicated with the water outlet end of the first water pump, and the water outlet end of the engine is communicated with the water inlet end of the first water pump to form a first engine circulating water path; The water outlet end of the engine is communicated with the first water inlet of the first multi-way valve.

5. The system according to claim 4, characterized in that, The first multi-way valve is integrated in the outer shell of the engine.

6. The system according to claim 4, characterized in that, The engine circulating water path further includes a thermostat and a first radiator; One end of the thermostat is communicated with the water outlet end of the engine, the other end of the thermostat is communicated with one end of the first radiator, the other end of the first radiator is communicated with the water inlet end of the first water pump, and the water outlet end of the first water pump is communicated with the water inlet end of the engine to form a second engine circulation water path; The first engine circulation water path and the second engine circulation water path share the engine and the first water pump.

7. The system according to claim 6, characterized in that, The engine circulation water path further includes a water injection container, and the water injection container is provided with a gas overflow valve; The other end of the first radiator is further communicated with the water injection container through a gas pipeline, and the water injection container is communicated with the water outlet end of the first water pump through a liquid pipeline.

8. The system according to claim 3, characterized in that, The motor circulation water path further includes a generator, a generator controller and a second radiator; The water outlet end of the second water pump is communicated with one end of the generator controller, the other end of the generator controller is communicated with the water inlet end of the generator, the water outlet end of the generator is communicated with one end of the second radiator, and the other end of the second radiator is communicated with the water inlet end of the second water pump to form a generator circulation water path; The water outlet end of the generator is further communicated with the second water inlet of the first multi-way valve.

9. The system according to claim 8, characterized in that, The motor circulation water path further includes a drive motor and a drive motor controller; The water outlet end of the second water pump is further communicated with one end of the drive motor controller, the other end of the drive motor controller is communicated with the water inlet end of the drive motor, the water outlet end of the drive motor is communicated with one end of the second radiator, and the other end of the second radiator is communicated with the water inlet end of the second water pump to form a drive motor circulation water path; The water outlet end of the drive motor is further communicated with the third water inlet of the second multi-way valve; The generator circulation water path and the drive motor circulation water path share the second radiator and the second water pump.

10. The system according to claim 8, characterized in that, The first multi-way valve is integrated in the housing of the generator.

11. The system according to claim 3, characterized in that, The power battery circulation water path further includes a power battery and a water heater; The water outlet end of the third water pump is communicated with one end of the water heater, the other end of the water heater is communicated with the water inlet end of the power battery, and the water outlet end of the power battery is communicated with the water inlet end of the third water pump to form a power battery heating circulation water path; The water inlet end of the power battery is communicated with the third water outlet of the second multi-way valve.

12. The system according to claim 11, characterized in that, The power battery circulation water path further includes a refrigerant heat exchanger; The water outlet end of the third water pump is communicated with one end of the refrigerant heat exchanger, the other end of the refrigerant heat exchanger is communicated with the water inlet end of the power battery, and the water outlet end of the power battery is communicated with the water inlet end of the third water pump to form a power battery cooling circulation water path; The power battery heating circulation water path and the power battery cooling circulation water path share the power battery and the third water pump.

13. The system according to claim 12, characterized in that, The power battery circulation water path further includes a liquid storage tank, a condenser and a compressor; The liquid storage tank, the condenser, the compressor and the refrigerant heat exchanger are sequentially communicated through pipelines to form a cooling circuit; The cooling circuit and the power battery cooling circulation water path share the refrigerant heat exchanger.

14. The system according to claim 2, characterized in that, The first multi-way valve and the second multi-way valve are both four-way valves. The four-way valve includes a valve body and a valve core. The valve body is provided with the first water outlet, the second water outlet, the first water inlet, and the second water inlet. The valve core is arranged in the valve body to control the opening degrees of the first water outlet, the second water outlet, the first water inlet, and the second water inlet.

15. A vehicle, characterized in that, Comprising the thermal management system according to any one of claims 1-14.

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