Thermal management system and electric vehicles

Abstract

The present invention provides a thermal management system and an electric vehicle, the thermal management system comprising a first five-way valve and a second five-way valve, the first five-way valve having a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port; the second five-way valve having a sixth valve port, a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port; the first port of the first channel of the radiator is connected to the fifth valve port, and the second port of the first channel is connected to the ninth valve port; the first port of the second channel of the heat exchanger is connected to the second valve port, and the second port of the second channel is connected to the seventh valve port; the first port of the third channel of the electric drive component is connected to the eighth valve port, and the second port of the third channel is connected to the first valve port; the first port of the fourth channel of the battery is connected to the sixth valve port, and the second port of the fourth channel is connected to the third valve port. The thermal management system of the present application solves the problem that the thermal management system of the existing electric vehicle causes a high cost per vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a thermal management system and an electric vehicle. Background Art

[0002] With the increasing requirements of electric vehicles for driving range in low-temperature environments and the continuous development of heat pump system technology, the thermal management system of pure electric vehicles is becoming more intelligent and energy control is becoming more refined.

[0003] Heat pump technology is currently widely used in new energy vehicles. Heat pump technology is an effective solution to the problem of shorter driving range of pure electric vehicles in winter. Using the "reverse Carnot" cycle of the air conditioner, the heat pump can "pump" the heat from the low-temperature air outside the car into the cab. Using heat pump air conditioners for heating in winter can reduce energy consumption by 60% and increase driving range by about 25% compared to using traditional PTC heaters for heating.

[0004] The refrigeration principle of traditional air conditioners is to use the physical change of the refrigerant. When it changes from gas to liquid, it will emit heat, while when it changes from liquid to gas, it will absorb heat. The "reverse Carnot" cycle used for heating in the car is opposite to the refrigeration principle of traditional air conditioners. Using an electromagnetic reversing valve, you can realize the refrigeration cycle or heating cycle, so that the car can get cold or hot air. In winter, the reversing valve can be used to change the flow direction of the air conditioner refrigerant. At this time, the evaporator acts as a condenser in the reverse cycle to release heat and form a "heat source". At this time, only a small amount of electricity is consumed to transport a large amount of external heat and "pump" it into the pure electric vehicle.

[0005] The thermal management system of electric vehicles generally controls the flow of coolant by switching water valves to achieve rational use of the thermal energy of the entire vehicle.

[0006] At present, the thermal management system of new energy vehicles can generally achieve the following functions: 1. High temperature conditions in summer: cool the motor and high-voltage components through the radiator, and the air conditioner cools the battery through the intermediate heat exchanger; 2. Low temperature conditions in winter: use the high-voltage heater to heat the passenger compartment, or use the waste heat of the motor system to heat the battery, increase the battery temperature, and reduce the battery energy attenuation, thereby increasing the cruising range and reducing the charging time; 3. Spring and autumn conditions: the battery temperature is high during or after charging and needs to be dissipated. At this time, the radiator is used to dissipate the heat for the battery, so that the air conditioning system does not need to be started, thereby achieving energy saving.

[0007] Although the existing thermal management system of new energy vehicles can meet the basic thermal management needs of new energy vehicles, the following problems still exist: 1. In the low temperature environment in winter, when the battery and the passenger compartment have heating requests at the same time, since the battery is directly connected to the high-voltage heater, in order to ensure that the battery temperature does not exceed 43°C, it is necessary to control the heating power of the high-voltage heater, resulting in poor heating effect; 2. The existing thermal management system has few achievable working modes, which will cause a significant increase in the cost of each vehicle. Summary of the invention

[0008] The main purpose of the present invention is to provide a thermal management system and an electric vehicle to solve the problem that the thermal management system of the electric vehicle in the prior art will cause a high cost per vehicle when implementing more working modes.

[0009] To achieve the above-mentioned purpose, according to one aspect of the present invention, a thermal management system is provided, which is applied to an electric vehicle, and the thermal management system includes: a first five-way valve, the first five-way valve has a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port; a second five-way valve, the second five-way valve has a sixth valve port, a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port; a radiator, the radiator has a first channel, the first port of the first channel is connected to the fifth valve port, and the second port of the first channel is connected to the ninth valve port; the radiator is used to cool the fluid flowing through the first channel; a heat exchanger, the heat exchanger has a second channel, the first port of the second channel is connected to the second valve port, and the second port of the second channel is connected to the seventh valve port; the heat exchanger is used to cool the fluid flowing through the second channel; an electric drive component, the electric drive component has a third channel, the first port of the third channel is connected to the eighth valve port, and the second port of the third channel is connected to the first valve port; a battery, the battery has a fourth channel, the first port of the fourth channel is connected to the sixth valve port, and the second port of the fourth channel is connected to the third valve port.

[0010] Further, by connecting the second valve port and the third valve port, and by connecting the sixth valve port and the seventh valve port, the second channel is connected to the fourth channel and a circulation loop is formed; by connecting the first valve port and the fifth valve port, and by connecting the eighth valve port and the ninth valve port, the first channel is connected to the third channel and a circulation loop is formed; or by connecting the first valve port and the second valve port, and by connecting the third valve port and the fifth valve port, and by connecting the sixth valve port and the seventh valve port, and by connecting the eighth valve port and the ninth valve port, the first channel, the third channel, the second channel, and the fourth channel are connected in sequence and a circulation loop is formed; or by connecting the third valve port and the fifth valve port, and by connecting the sixth valve port and the ninth valve port, the first channel and the fourth channel are connected and a circulation loop is formed; by connecting the first valve port and the second valve port, and by connecting the seventh valve port and the eighth valve port, the third channel and the second channel are connected and a circulation passage is formed.

[0011] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline, and the thermal management system also includes: a condenser, the condenser has a fifth channel, the first port of the fifth channel is connected to the fourth valve port, and the second port of the fifth channel is connected to the tube cavity of the first pipeline; wherein, by connecting the eighth valve port and the ninth valve port, and by connecting the first valve port and the fourth valve port, the first channel, the third channel and the fifth channel are connected in sequence to form a circulation loop; by connecting the second valve port and the third valve port, and by connecting the sixth valve port and the seventh valve port, the second channel and the fourth channel are connected to form a circulation passage.

[0012] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline; along the flow direction of the fluid in the first pipeline, the first pipeline has a first connection position and a second connection position arranged in sequence; the thermal management system also includes: a heater, the heater has a sixth channel, the first port of the sixth channel is connected to the fourth valve port, and the second port of the sixth channel is connected to the tube cavity at the first connection position; the heater is used to heat the fluid flowing through the sixth channel; a second pipeline, the first tube port of the second pipeline is connected to the tube cavity at the second connection position, and the second tube port of the second pipeline is connected to the tenth valve port.

[0013] Further, by connecting the tenth valve port and the sixth valve port, and by connecting the third valve port and the fourth valve port, the sixth channel and the fourth channel are connected to form a circulation loop; by connecting the seventh valve port and the eighth valve port, and by connecting the first valve port and the second valve port, the second channel and the third channel are connected to form a circulation passage; or by connecting the first valve port and the second valve port, and by connecting the sixth valve port and the seventh valve port, and by connecting the third valve port and the fourth valve port, and by connecting the eighth valve port and the tenth valve port, the second channel, the fourth channel, the sixth channel, and the third channel are connected in sequence to form a circulation passage.

[0014] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline; along the flow direction of the fluid in the first pipeline, the first pipeline has a first connection position and a second connection position arranged in sequence; the thermal management system also includes: a heater, the heater has a sixth channel, the first port of the sixth channel is connected to the fourth valve port through a fifth pipeline, and the heater is used to heat the fluid flowing through the sixth channel; a heating component, the heating component has a seventh channel, the first port of the seventh channel is connected to the second port of the sixth channel, and the second port of the seventh channel is connected to the tube cavity at the first connection position of the first pipeline through a fourth pipeline; a third pipeline, the first tube port of the third pipeline is connected to the tube cavity of the fourth pipeline, and the second tube port of the third pipeline is connected to the tube cavity of the fifth pipeline; wherein the third valve port includes a first opening portion and a second opening portion, and the flow cross-sectional areas of the first opening portion and the second opening portion are arranged in a preset ratio; the fourth valve port and the fifth valve port are connected to the first opening portion and the second opening portion, respectively, and the sixth valve port is connected to the tenth valve port.

[0015] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline; the thermal management system also includes: a second pipeline, the first pipe port of the second pipeline is connected to the tube cavity of the first pipeline, and the second pipe port of the second pipeline is connected to the tenth valve port; wherein, by connecting the second valve port and the third valve port, and by connecting the sixth valve port and the seventh valve port, the fourth channel and the second channel are connected to form a circulation passage; the first valve port and the fifth valve port are connected, and the eighth valve port and the tenth valve port are connected.

[0016] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline; the thermal management system also includes: a second pipeline, the first pipe port of the second pipeline is connected to the tube cavity of the first pipeline, and the second pipe port of the second pipeline is connected to the tenth valve port; wherein, by connecting the first valve port and the second valve port, and by connecting the seventh valve port and the eighth valve port, the third channel and the second channel are connected to form a circulation passage; the third valve port and the fifth valve port are connected, and the sixth valve port and the tenth valve port are connected.

[0017] Furthermore, the first port of the first channel is connected to the fifth valve port through a first pipeline; the thermal management system also includes: a second pipeline, the first pipe port of the second pipeline is connected to the tube cavity of the first pipeline, and the second pipe port of the second pipeline is connected to the tenth valve port; wherein, by connecting the first valve port and the second valve port, by connecting the seventh valve port and the sixth valve port, by connecting the third valve port and the fifth valve port, and by connecting the eighth valve port and the tenth valve port, the third channel, the second channel, and the fourth channel are connected in sequence to form a circulation passage.

[0018] According to another aspect of the present invention, an electric vehicle is provided, which includes the above-mentioned thermal management system.

[0019] Applying the technical solution of the present invention, the thermal management system includes a first five-way valve, a second five-way valve, a radiator, a heat exchanger, an electric drive component and a battery, the first five-way valve having a first valve port, a second valve port, a third valve port, a fourth valve port and a fifth valve port; the second five-way valve having a sixth valve port, a seventh valve port, an eighth valve port, a ninth valve port and a tenth valve port; the radiator having a first channel, a first port of the first channel being connected to the fifth valve port, and a second port of the first channel being connected to the ninth valve port; the radiator is used to cool the fluid flowing through the first channel; the heat exchanger having a second channel, a first port of the second channel being connected to the second valve port, and a second port of the second channel being connected to the seventh valve port; the heat exchanger is used to cool the fluid flowing through the second channel; the electric drive component having a third channel, a first port of the third channel being connected to the eighth valve port, and a second port of the third channel being connected to the first valve port; the battery having a fourth channel, a first port of the fourth channel being connected to the sixth valve port, and a second port of the fourth channel being connected to the third valve port.

[0020] The thermal management system of the present application realizes multiple operating modes by setting two five-way valves; and compared with the multiple valves in the thermal management system in the prior art, the thermal management system of the present application only sets two five-way valves to effectively reduce the cost per vehicle, thereby solving the problem that the thermal management system of electric vehicles in the prior art will cause a higher cost per vehicle when realizing more operating modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of a thermal management system according to the present invention is shown; wherein the thermal management system is in a first working mode;

[0023] Figure 2It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the second working mode;

[0024] Figure 3 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the third working mode;

[0025] Figure 4 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the fourth working mode;

[0026] Figure 5 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the fifth working mode;

[0027] Figure 6 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the sixth working mode;

[0028] Figure 7 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the seventh working mode;

[0029] Figure 8 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the eighth working mode;

[0030] Fig. 9 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the ninth working mode;

[0031] Fig.10 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the tenth working mode;

[0032] Fig.11 It shows a schematic structural diagram of a thermal management system according to the present invention; wherein the thermal management system is in the eleventh working mode;

[0033] Fig.12 A schematic structural diagram of a five-way valve of a thermal management system according to the present invention is shown;

[0034] Fig.13 Shows Figure 1 A schematic diagram of the structure of a first five-way valve of a thermal management system;

[0035] Fig.14 Shows Figure 6 Schematic diagram of the structure of the first five-way valve of the thermal management system.

[0036] The above drawings include the following reference numerals:

[0037] 1. five-way valve; 101. valve port; 2. internal cavity; 201. cavity portion; 3. partition portion; 31. first partition portion; 32. second partition portion;

[0038] 10. First five-way valve; 11. First valve port; 12. Second valve port; 13. Third valve port; 131. First opening; 132. Second opening; 14. Fourth valve port; 15. Fifth valve port;

[0039] 20, second five-way valve; 21, sixth valve port; 22, seventh valve port; 23, eighth valve port; 24, ninth valve port; 25, tenth valve port;

[0040] 30. Radiator; 40. Heat exchanger; 50. Electric drive components; 60. Battery; 70. Condenser; 80. Heater; 90. Heating components;

[0041] 210, first pipeline; 2101, first connection position; 2102, second connection position; 220, second pipeline; 230, third pipeline; 240, fourth pipeline; 260, sixth pipeline; 271, first water pump; 272, second water pump; 273, third water pump; 281, first temperature sensor; 282, second temperature sensor; 283, third temperature sensor; 290, expansion water tank. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] The present invention provides a thermal management system for electric vehicles. Figures 1 to 14The thermal management system includes a first five-way valve 10, a second five-way valve 20, a radiator 30, a heat exchanger 40, an electric drive component 50 and a battery 60. The first five-way valve 10 has a first valve port 11, a second valve port 12, a third valve port 13, a fourth valve port 14 and a fifth valve port 15; the second five-way valve 20 has a sixth valve port 21, a seventh valve port 22, an eighth valve port 23, a ninth valve port 24 and a tenth valve port 25; the radiator 30 has a first channel, a first port of the first channel is connected to the fifth valve port 15, and a second port of the first channel is connected to the ninth valve port 24; the radiator 3 0 is used to cool the fluid flowing through the first channel; the heat exchanger 40 has a second channel, the first port of the second channel is connected to the second valve port 12, and the second port of the second channel is connected to the seventh valve port 22; the heat exchanger 40 is used to cool the fluid flowing through the second channel; the electric drive component 50 has a third channel, the first port of the third channel is connected to the eighth valve port 23, and the second port of the third channel is connected to the first valve port 11; the battery 60 has a fourth channel, the first port of the fourth channel is connected to the sixth valve port 21, and the second port of the fourth channel is connected to the third valve port 13.

[0046] The thermal management system of the present application realizes multiple operating modes by setting two five-way valves (i.e., the first five-way valve 10 and the second five-way valve 20); and compared with the multiple valves in the thermal management system in the prior art, the thermal management system of the present application only sets two five-way valves to effectively reduce the cost per vehicle, thereby solving the problem that the thermal management system of electric vehicles in the prior art will cause a higher cost per vehicle when realizing more operating modes.

[0047] In addition, compared with the existing method of realizing multiple working modes through multiple valves, the thermal management system of the present application integrates the functions of realizing multiple working modes through multiple valves into two five-way valves, with a high degree of integration, saving space and weight of the whole vehicle. And realizing multiple working modes through two five-way valves can effectively ensure the control accuracy of the thermal management energy of the whole vehicle.

[0048] Specifically, when the radiator 30 is working, the radiator 30 cools the fluid flowing through the first channel, so that the fluid in the first channel forms a cooling medium. When the radiator 30 is not working, the first channel only plays a conducting role.

[0049] Specifically, when the heat exchanger 40 is working, the heat exchanger 40 cools the fluid flowing through the second channel, so that the fluid in the second channel forms a cooling medium. When the heat exchanger 40 is not working, the second channel only plays a conductive role.

[0050] Specifically, the heat exchanger 40 is an intermediate heat exchanger (chiller) of the air conditioning system of the electric vehicle.

[0051] Specifically, the electric drive component 50 provides driving force for the electric vehicle, and the battery 60 provides power for the electric vehicle; that is, the electric drive component 50 and the battery 60 are both heat-generating components. Optionally, the electric drive component 50 includes a motor.

[0052] Optionally, the fluid in all the circulation loops formed in the present application is liquid; for example, the fluid in all the circulation loops formed in the present application is water.

[0053] In this embodiment, the first working mode of the thermal management system of the present application is: Figure 1 and Fig.13 As shown, by making the second valve port 12 and the third valve port 13 communicate with each other, and by making the sixth valve port 21 and the seventh valve port 22 communicate with each other, the second channel of the heat exchanger 40 communicates with the fourth channel of the battery 60 to form a circulation loop. By making the first valve port 11 and the fifth valve port 15 communicate with each other, and by making the eighth valve port 23 and the ninth valve port 24 communicate with each other, the first channel of the radiator 30 communicates with the third channel of the electric drive component 50 to form a circulation loop.

[0054] When the heat exchanger 40 is in working state, the fluid flowing through the second channel forms a cooling medium, and when the cooling medium flows through the fourth channel, the battery 60 is cooled down; when the radiator 30 is in working state, the fluid flowing through the first channel forms a cooling medium, and when the cooling medium flows through the third channel, the electric drive component 50 is cooled down. That is, in this mode, the heat exchanger 40 and the radiator 30 cool the battery 60 and the electric drive component 50 independently.

[0055] Optionally, the first operating mode is a default mode of the thermal management system of the present application.

[0056] Optionally, the first working mode is usually used when the electric vehicle is in a high temperature environment.

[0057] In this embodiment, the second working mode of the thermal management system of the present application is: Figure 2 As shown, by connecting the first valve port 11 and the second valve port 12, connecting the third valve port 13 and the fifth valve port 15, connecting the sixth valve port 21 and the seventh valve port 22, and connecting the eighth valve port 23 and the ninth valve port 24, the first channel of the radiator 30, the third channel of the electric drive component 50, the second channel of the heat exchanger 40, and the fourth channel of the battery 60 are connected in sequence to form a circulation loop.

[0058] When the radiator 30 is in working state, the fluid flowing through the first channel forms a cooling medium, which cools down the electric drive component 50 when flowing through the third channel, and cools down the battery 60 when flowing through the fourth channel; at this time, the electric drive component 50 and the battery 60 are mainly cooled and dissipated by the radiator 30, and the heat exchanger 40 can work or reduce the workload of the heat exchanger 40, thereby reducing the energy consumption of the air-conditioning system.

[0059] In this embodiment, the third working mode of the thermal management system of the present application is: Figure 3 As shown, by connecting the third valve port 13 and the fifth valve port 15, and connecting the sixth valve port 21 and the ninth valve port 24, the first channel of the radiator 30 and the fourth channel of the battery 60 are connected to form a circulation loop. When the radiator 30 is in working state, the fluid flowing through the first channel forms a cooling medium, and the cooling medium cools the battery 60 when flowing through the fourth channel, that is, the radiator 30 is used to cool and dissipate heat for the battery 60.

[0060] Specifically, in the third working mode, the third channel of the electric drive component 50 and the second channel of the heat exchanger 40 are connected to form a circulation path by connecting the first valve port 11 and the second valve port 12, and connecting the seventh valve port 22 and the eighth valve port 23. According to the heating condition of the electric drive component 50, the heat exchanger 40 may not work but only play a conducting role, which can reduce the load of the air conditioning system; of course, the heat exchanger 40 can also work to cool the electric drive component 50.

[0061] In this embodiment, the first port of the first channel of the radiator 30 is connected to the fifth valve port 15 through the first pipeline 210. The thermal management system also includes a condenser 70, which has a fifth channel. The first port of the fifth channel is connected to the fourth valve port 14, and the second port of the fifth channel is connected to the tube cavity of the first pipeline 210.

[0062] In this embodiment, the fourth working mode of the thermal management system of the present application is: Figure 4 As shown, by connecting the eighth valve port 23 and the ninth valve port 24, and by connecting the first valve port 11 and the fourth valve port 14, the first channel of the radiator 30, the third channel of the electric drive component 50 and the fifth channel of the condenser 70 are connected in sequence to form a circulation loop.

[0063] When the radiator 30 is in working state, the fluid flowing through the first channel forms a cooling medium, which cools the electric drive component 50 when flowing through the third channel, and cools the condenser 70 when flowing through the fifth channel. In the high temperature environment in summer, when the cooling load of the air conditioning system is large, the radiator 30 can be used to dissipate heat from the condenser 70 to reduce the load of the condenser 70.

[0064] Specifically, in the fourth working mode, the second valve port 12 and the third valve port 13 are connected, and the sixth valve port 21 and the seventh valve port 22 are connected, so that the second channel of the heat exchanger 40 and the fourth channel of the battery 60 are connected to form a circulation path. According to the heating condition of the battery 60, the heat exchanger 40 may not work but only play a conduction role; of course, the heat exchanger 40 may also work, so that the heat exchanger 40 cools the battery 60.

[0065] Specifically, the condenser 70 is a condenser of an air conditioning system of the electric vehicle.

[0066] Optionally, the condenser 70 is a water-cooled condenser.

[0067] Optionally, the second working mode is usually applied in spring and autumn when the ambient temperature is not high.

[0068] In this embodiment, along the flow direction of the fluid in the first pipeline 210, the first pipeline 210 has a first connection position 2101 and a second connection position 2102 arranged in sequence; the thermal management system also includes a heater 80 and a second pipeline 220, the heater 80 has a sixth channel, the first port of the sixth channel is connected to the fourth valve port 14, and the second port of the sixth channel is connected to the tube cavity at the first connection position 2101 of the first pipeline 210; the first tube port of the second pipeline 220 is connected to the tube cavity at the second connection position 2102 of the first pipeline 210, and the second tube port of the second pipeline 220 is connected to the tenth valve port 25.

[0069] Optionally, the heater 80 is a PTC heater.

[0070] Specifically, when the thermal management system includes a condenser 70 and a heater 80 at the same time, the first port of the fifth channel of the condenser 70 is connected to the fourth valve port 14, the first port of the sixth channel of the heater 80 is connected to the second port of the fifth channel, and the second port of the sixth channel is connected to the tube cavity at the first connection position 2101.

[0071] It should be noted that when the heater 80 is working, the heater 80 heats the fluid flowing through the sixth channel so that the fluid in the sixth channel forms a heating medium; when the heater 80 is not working, the sixth channel only serves as a conduction. When the thermal management system of the present application is in the fourth working mode, the heater 80 is not working.

[0072] In this embodiment, the fifth working mode of the thermal management system of the present application is: Figure 5 As shown, the sixth channel of the heater 80 is connected to the fourth channel of the battery 60 by connecting the tenth valve port 25 and the sixth valve port 21, and by connecting the third valve port 13 and the fourth valve port 14, so as to form a circulation loop. When the heater 80 is in working state, the fluid flowing through the sixth channel forms a heating medium, and the heating medium heats the battery 60 when flowing through the fourth channel, that is, at this time, the heater 80 heats the battery 60 independently.

[0073] Specifically, the fifth working mode of the thermal management system of the present application is usually used when the battery temperature is too low in a low temperature environment.

[0074] Specifically, in the fifth working mode, the second channel of the heat exchanger 40 is connected to the third channel of the electric drive component 50 by connecting the seventh valve port 22 and the eighth valve port 23, and connecting the first valve port 11 and the second valve port 12 to form a circulation path. According to the heating condition of the electric drive component 50, the heat exchanger 40 may not work but only play a conducting role; of course, the heat exchanger 40 may also work to cool the electric drive component 50.

[0075] In this embodiment, the first port of the sixth channel of the heater 80 is connected to the fourth valve port 14 through the fifth pipeline. The thermal management system also includes a heating component 90 and a third pipeline 230. The heating component 90 has a seventh channel. The first port of the seventh channel is connected to the second port of the sixth channel. The second port of the seventh channel is connected to the lumen at the first connection position 2101 of the first pipeline 210 through the fourth pipeline 240; the first pipe opening of the third pipeline 230 is connected to the lumen of the fourth pipeline 240, and the second pipe opening of the third pipeline 230 is connected to the lumen of the fifth pipeline.

[0076] Specifically, when the thermal management system includes the condenser 70, the heater 80 and the heating component 90 at the same time, the first port of the fifth channel of the condenser 70 is connected to the fourth valve port 14 through the sixth pipeline 260, the first port of the sixth channel of the heater 80 is connected to the second port of the fifth channel, the first port of the seventh channel of the heating component 90 is connected to the second port of the sixth channel, and the second port of the seventh channel is connected to the tube cavity at the first connection position 2101 of the first pipeline 210 through the fourth pipeline 240. Among them, the sixth pipeline 260 is a part of the fifth pipeline, and the second pipe port of the third pipeline 230 is connected to the tube cavity of the sixth pipeline 260.

[0077] Specifically, the heating component 90 can generate warm air through the heating medium in the seventh channel thereof to perform heating.

[0078] In this embodiment, the sixth working mode of the thermal management system of the present application is: Figure 6 and Fig.14 As shown, the third valve port 13 includes a first opening portion 131 and a second opening portion 132, and the flow cross-sectional areas of the first opening portion 131 and the second opening portion 132 are arranged in a preset ratio; by making the fourth valve port 14 and the fifth valve port 15 connected to the first opening portion 131 and the second opening portion 132 respectively, and by making the sixth valve port 21 and the tenth valve port 25 connected, the sixth channel of the heater 80, the seventh channel of the heating component 90, and the third pipeline 230 are connected in sequence to form a heating circulation loop, and the sixth channel of the heater 80 and the fourth channel of the battery 60 are connected to form a battery heating circulation loop.

[0079] When the heater 80 is in working state, the fluid flowing through the sixth channel forms a heating medium, and the heating medium heats the battery 60 when flowing through the fourth channel, and the heating medium causes the heating component 90 to generate warm air when flowing through the seventh channel. Since the temperature of the warm air generated by the heating component 90 is higher than the temperature of the battery 60 after heating the battery 60, the third pipeline 230 is provided to make the temperature of the fluid in the formed heating circulation loop higher than the temperature of the fluid in the battery heating circulation loop. In this way, it can not only ensure that the temperature of the battery 60 is not heated to too high, but also ensure the heating effect of the heating component 90.

[0080] Among them, since the flow cross-sectional areas of the first opening portion 131 and the second opening portion 132 are set in a preset ratio, the instantaneous flow rate of the fluid passing through the first opening portion 131 and the instantaneous flow rate of the fluid passing through the second opening portion 132 are in a preset ratio, so that part of the fluid flows in the heating circulation loop and the other part of the fluid flows in the battery heating circulation loop.

[0081] Specifically, due to the need for both heating and heating the battery 60 in a low-temperature environment in winter, the sixth working mode of the thermal management system of the present application can be adopted at this time.

[0082] Specifically, in the sixth working mode, the second channel of the heat exchanger 40 is connected to the third channel of the electric drive component 50 by connecting the seventh valve port 22 and the eighth valve port 23, and connecting the first valve port 11 and the second valve port 12 to form a circulation path. According to the heating condition of the electric drive component 50, the heat exchanger 40 may not work but only play a conducting role; of course, the heat exchanger 40 may also work to cool the electric drive component 50.

[0083] In this embodiment, the seventh working mode of the thermal management system of the present application is: Figure 7As shown, by connecting the first valve port 11 and the second valve port 12, connecting the sixth valve port 21 and the seventh valve port 22, connecting the third valve port 13 and the fourth valve port 14, and connecting the eighth valve port 23 and the tenth valve port 25, the second channel of the heat exchanger 40, the fourth channel of the battery 60, the sixth channel of the heater 80, and the third channel of the electric drive component 50 are connected in sequence to form a circulation passage.

[0084] When the heat exchanger 40 is working and when the heater 80 is not working, the heater 80 only plays a conducting role, and the heat exchanger 40 can cool down the battery 60 and the electric drive component 50; when the heat exchanger 40 is not working and when the heater 80 is working, the heat exchanger 40 and the electric drive component 50 only play a conducting role, and the heater 80 heats the battery 60.

[0085] Furthermore, when the heat exchanger 40 is not working and when the heater 80 is working, the electric drive component 50 can be blocked to generate heat, thereby causing the electric drive component 50 to heat the fluid in its third channel, so that the electric drive component 50 can also heat the battery 60.

[0086] In this embodiment, the first pipe opening of the second pipeline 220 is communicated with the lumen of the first pipeline 210 , and the second pipe opening of the second pipeline 220 is communicated with the tenth valve port 25 .

[0087] In this embodiment, the eighth working mode of the thermal management system of the present application is: Figure 8 As shown, by communicating the second valve port 12 with the third valve port 13 and communicating the sixth valve port 21 with the seventh valve port 22, the fourth channel of the battery 60 and the second channel of the heat exchanger 40 are communicated to form a circulation passage.

[0088] Specifically, in a low temperature environment in winter, when the battery 60 has available waste heat, the eighth operating mode can be adopted, and the fourth channel can be connected to the fluid channel of the heat pump system to allow the heat pump system to absorb the waste heat of the battery 60 and utilize the waste heat of the battery 60 through the heat pump system; for example, the waste heat of the battery 60 can be used to heat the passenger compartment through the heat pump system.

[0089] Specifically, in the eighth working mode, the first valve port 11 and the fifth valve port 15 are connected, and the eighth valve port 23 and the tenth valve port 25 are connected, so that the electric drive component 50 forms a self-circulating loop through the second pipeline 220.

[0090] In this embodiment, the ninth working mode of the thermal management system of the present application is: Fig. 9As shown, by connecting the first valve port 11 and the second valve port 12, and by connecting the seventh valve port 22 and the eighth valve port 23, the third channel of the electric drive component 50 and the second channel of the heat exchanger 40 are connected to form a circulation passage; at this time, the heat exchanger 40 is not working and only serves as a conduction.

[0091] Specifically, in a low temperature environment in winter, when the electric drive component 50 has waste heat that can be utilized, the ninth working mode can be adopted, and the third channel can be connected to the fluid channel of the heat pump system to allow the heat pump system to absorb the waste heat of the electric drive component 50 and utilize the waste heat of the electric drive component 50 through the heat pump system; for example, the waste heat of the electric drive component 50 can be used to heat the passenger compartment through the heat pump system.

[0092] Specifically, in the ninth working mode, the third valve port 13 is connected to the fifth valve port 15 , and the sixth valve port 21 is connected to the tenth valve port 25 , so that the battery 60 forms a self-circulating loop through the second pipeline 220 .

[0093] In this embodiment, the tenth working mode of the thermal management system of the present application is: Fig.10 As shown, by connecting the first valve port 11 and the fifth valve port 15, and connecting the eighth valve port 23 and the tenth valve port 25, the electric drive component 50 forms a self-circulating loop through the second pipeline 220. This mode is a warm-up mode of the electric drive component 50 before utilizing the residual heat of the electric drive component 50 in a low temperature environment in winter. The electric drive component 50 avoids the radiator 30 for self-circulation, so that the temperature of the electric drive component 50 increases and generates residual heat.

[0094] Specifically, in the tenth working mode, the second valve port 12 and the third valve port 13 are connected, and the sixth valve port 21 and the seventh valve port 22 are connected, so that the fourth channel of the battery 60 and the second channel of the heat exchanger 40 are connected to form a circulation path; at this time, according to the heating condition of the battery 60, the heat exchanger 40 may not work and only play a conducting role; of course, the heat exchanger 40 may also work, so that the heat exchanger 40 can cool down the battery 60.

[0095] Furthermore, when the electric drive component 50 generates waste heat and the waste heat is available in the tenth working mode, it can be switched to the eighth working mode; or by changing the connectivity between the valve ports of the first five-way valve 10 and the connectivity between the valve ports of the second five-way valve 20, the waste heat of the electric drive component 50 can heat the battery 60.

[0096] In this embodiment, the eleventh working mode of the thermal management system of the present application is: Fig.11As shown, by connecting the first valve port 11 and the second valve port 12, connecting the seventh valve port 22 and the sixth valve port 21, connecting the third valve port 13 and the fifth valve port 15, and connecting the eighth valve port 23 and the tenth valve port 25, the third channel of the electric drive component 50, the second channel of the heat exchanger 40, and the fourth channel of the battery 60 are connected in sequence to form a circulation path. At this time, the heat exchanger 40 does not work and only serves as a conduction.

[0097] Specifically, in a low-temperature environment in winter, when both the battery 60 and the electric drive component 50 have waste heat that can be utilized, the eleventh working mode can be adopted to connect the third channel of the electric drive component 50 and the fourth channel of the battery 60 in series, so that the waste heat of the battery 60 and the waste heat of the electric drive component 50 can be used together. For example, the waste heat of the battery 60 and the waste heat of the electric drive component 50 can be used together to heat the cab.

[0098] It should be noted that, for each channel in the present application, the two ports of each channel are respectively the first port and the second port, and the direction of fluid flow through each channel is from the first port of each channel to the second port. For each pipeline in the present application, the two pipe openings of each pipeline are respectively the first pipe opening and the second pipe opening, and the direction of fluid flow through each pipeline is from the first pipe opening of each pipeline to the second pipe opening.

[0099] In this embodiment, a first water pump 271 and / or a first temperature sensor 281 is provided on the pipeline between the eighth valve port 23 and the first port of the third channel of the electric drive component 50 .

[0100] In this embodiment, the thermal management system further includes an expansion water tank 290 , and the lumen of the pipe section between the first water pump 271 and the first port of the third channel is in communication with the cavity of the expansion water tank 290 .

[0101] In this embodiment, the third water pump 273 is provided on the sixth pipeline 260. Specifically, the sixth pipeline 260 is provided with a third connection position, and the second pipe opening of the third pipeline 230 is connected to the pipe cavity at the third connection position of the sixth pipeline 260; the third water pump 273 is provided on the pipe section of the sixth pipeline 260 between the third connection position and the condenser 70.

[0102] In this embodiment, a second water pump 272 and / or a second temperature sensor 282 are provided on the pipeline between the sixth valve port 21 and the first port of the fourth channel of the battery 60. A third temperature sensor 283 is provided on the pipeline between the second valve port 12 and the first port of the second channel of the heat exchanger 40.

[0103] In this embodiment, the first five-way valve 10 and the second five-way valve 20 are collectively referred to as the five-way valve 1. Fig.12As shown, the five-way valve includes an internal cavity 2, two partitions 3 and five valve ports 101 arranged at intervals, and the five valve ports 101 are all connected to the internal cavity 2; the two partitions 3 are arranged at intervals in the internal cavity 2 to divide the internal cavity 2 into three cavity parts 201; by changing the positions of the two partitions 3, any two pairs of valve ports 101 of the five-way valve 1 are connected, and each pair of valve ports 101 includes any two valve ports 101.

[0104] Specifically, along the circumference of the five-way valve 1 , the five valve ports 101 are arranged in sequence and at intervals; the circumferential angle between any two adjacent valve ports 101 is 72 degrees.

[0105] Specifically, the five-way valve 1 includes a valve housing and a valve core which are fixedly connected to each other. The valve core is located in the valve housing, the internal cavity 2 is arranged on the valve core, and the five valve ports 101 are all arranged on the valve housing.

[0106] Optionally, the two partitions 3 are both plate-shaped structures, that is, the two partitions 3 are two partition plates.

[0107] For example, in the first five-way valve 10, along the circumference of the first five-way valve 10, the first valve port 11, the second valve port 12, the third valve port 13, the fourth valve port 14 and the fifth valve port 15 are sequentially arranged at intervals; the two partitions 3 of the first five-way valve 10 are respectively the first partition 31 and the second partition 32; when the two partitions 3 are in the Fig.13 When in the middle position, one end of the first partition portion 31 abuts against the cavity wall between the third valve port 13 and the fourth valve port 14, and the other end of the first partition portion 31 abuts against the cavity wall between the first valve port 11 and the second valve port 12, so that the second valve port 12 and the third valve port 13 are both connected to the same cavity portion, thereby connecting the second valve port 12 and the third valve port 13; one end of the second partition portion 32 abuts against the cavity wall between the fourth valve port 14 and the fifth valve port 15, and the other end of the second partition portion 32 abuts against the cavity wall between the first valve port 11 and the second valve port 12, so that the first valve port 11 and the fifth valve port 15 are both connected to the same cavity portion, thereby connecting the first valve port 11 and the fifth valve port 15.

[0108] For example, when the two partitions 3 are in the Fig.14When in the middle position, one end of the first partition portion 31 abuts against the connecting position between the first opening portion 131 and the second opening portion 132 of the third valve port 13, the other end of the first partition portion 31 abuts against the cavity wall between the fourth valve port 14 and the fifth valve port 15, one end of the second partition portion 32 abuts against the cavity wall between the second valve port 12 and the third valve port 13, and the other end of the second partition portion 32 abuts against the cavity wall between the first valve port 11 and the fifth valve port 15, so that the first opening portion 131 and the fourth valve port 14 are both connected to the same cavity portion, the second opening portion 132 and the fifth valve port 15 are both connected to the same cavity portion, and the first valve port 11 and the second valve port 12 are both connected to the same cavity portion, thereby connecting the first opening portion 131 and the fourth valve port 14, connecting the second opening portion 132 and the fifth valve port 15, and connecting the first valve port 11 and the second valve port 12.

[0109] It should be noted that the principles of various communication states of the first five-way valve 10 and the principles of various communication states of the second five-way valve 20 are the same as those described above, and thus will not be described in detail.

[0110] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0111] In the thermal management system provided by the present invention, the thermal management system includes a first five-way valve 10, a second five-way valve 20, a radiator 30, a heat exchanger 40, an electric drive component 50 and a battery 60. The first five-way valve 10 has a first valve port 11, a second valve port 12, a third valve port 13, a fourth valve port 14 and a fifth valve port 15; the second five-way valve 20 has a sixth valve port 21, a seventh valve port 22, an eighth valve port 23, a ninth valve port 24 and a tenth valve port 25; the radiator 30 has a first channel, a first port of the first channel is connected to the fifth valve port 15, and a second port of the first channel is connected to the ninth valve port 24 The heat exchanger 40 has a second channel, a first port of the second channel is connected to the second valve port 12, and a second port of the second channel is connected to the seventh valve port 22; the heat exchanger 40 is used to cool the fluid flowing through the second channel; the electric drive component 50 has a third channel, a first port of the third channel is connected to the eighth valve port 23, and a second port of the third channel is connected to the first valve port 11; the battery 60 has a fourth channel, a first port of the fourth channel is connected to the sixth valve port 21, and a second port of the fourth channel is connected to the third valve port 13.

[0112] The thermal management system of the present application realizes multiple operating modes by setting two five-way valves; and compared with the multiple valves in the thermal management system in the prior art, the thermal management system of the present application only sets two five-way valves to effectively reduce the cost per vehicle, thereby solving the problem that the thermal management system of electric vehicles in the prior art will cause a higher cost per vehicle when realizing more operating modes.

[0113] The thermal management system of the present application can realize switching among eleven working modes. By making full use of the waste heat of the electric drive component 50 and the battery 60 and reducing the load of the air-conditioning system under different ambient temperatures, the energy consumption of the whole vehicle is reduced and the cruising range of the whole vehicle is improved.

[0114] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0115] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal management system, applied to electric vehicles, characterized in that: The thermal management system comprises: A first five-way valve (10), wherein the first five-way valve (10) has a first valve port (11), a second valve port (12), a third valve port (13), a fourth valve port (14) and a fifth valve port (15); A second five-way valve (20), wherein the second five-way valve (20) has a sixth valve port (21), a seventh valve port (22), an eighth valve port (23), a ninth valve port (24) and a tenth valve port (25); a radiator (30), the radiator (30) having a first channel, a first port of the first channel being in communication with the fifth valve port (15), and a second port of the first channel being in communication with the ninth valve port (24); the radiator (30) being used to cool a fluid flowing through the first channel; A heat exchanger (40), the heat exchanger (40) having a second channel, a first port of the second channel being in communication with the second valve port (12), and a second port of the second channel being in communication with the seventh valve port (22); the heat exchanger (40) being used for cooling a fluid flowing through the second channel; an electric drive component (50), the electric drive component (50) having a third channel, a first port of the third channel being in communication with the eighth valve port (23), and a second port of the third channel being in communication with the first valve port (11); A battery (60), wherein the battery (60) has a fourth channel, a first port of the fourth channel is connected to the sixth valve port (21), and a second port of the fourth channel is connected to the third valve port (13); A condenser (70), wherein the first port of the first channel is connected to the fifth valve port (15) via a first pipeline (210); the condenser (70) has a fifth channel, the first port of the fifth channel is connected to the fourth valve port (14), and the second port of the fifth channel is connected to the tube cavity of the first pipeline (210); A heater (80), wherein the first port of the first channel is connected to the fifth valve port (15) via a first pipeline (210); along the flow direction of the fluid in the first pipeline (210), the first pipeline (210) has a first connection position (2101) and a second connection position (2102) arranged in sequence; the heater (80) has a sixth channel, the first port of the sixth channel is connected to the fourth valve port (14) via a fifth pipeline, and the second port of the sixth channel is connected to the tube cavity at the first connection position (2101); the heater (80) is used to heat the fluid flowing through the sixth channel; a second pipeline (220), wherein a first pipe opening of the second pipeline (220) is in communication with the lumen at the second connection position (2102), and a second pipe opening of the second pipeline (220) is in communication with the tenth valve opening (25); a heating component (90), the heating component (90) having a seventh channel, a first port of the seventh channel being in communication with a second port of the sixth channel, and the second port of the seventh channel being in communication with a lumen at a first connection position (2101) of the first pipeline (210) via a fourth pipeline (240); A third pipeline (230), wherein the first pipe opening of the third pipeline (230) is connected to the lumen of the fourth pipeline (240), and the second pipe opening of the third pipeline (230) is connected to the lumen of the fifth pipeline; the third valve port (13) comprises a first opening portion (131) and a second opening portion (132), and the flow cross-sectional areas of the first opening portion (131) and the second opening portion (132) are arranged in a preset ratio; the fourth valve port (14) and the fifth valve port (15) are respectively connected to the first opening portion (131) and the second opening portion (132), and the sixth valve port (21) and the tenth valve port (25) are connected.

2. The thermal management system according to claim 1, characterized in that: By making the second valve port (12) and the third valve port (13) communicate with each other, and by making the sixth valve port (21) and the seventh valve port (22) communicate with each other, the second channel is connected to the fourth channel to form a circulation loop; by making the first valve port (11) and the fifth valve port (15) communicate with each other, and by making the eighth valve port (23) and the ninth valve port (24) communicate with each other, the first channel is connected to the third channel to form a circulation loop; or By making the first valve port (11) and the second valve port (12) communicate with each other, by making the third valve port (13) and the fifth valve port (15) communicate with each other, by making the sixth valve port (21) and the seventh valve port (22) communicate with each other, and by making the eighth valve port (23) and the ninth valve port (24) communicate with each other, the first channel, the third channel, the second channel and the fourth channel are connected in sequence to form a circulation loop; or By connecting the third valve port (13) and the fifth valve port (15), and by connecting the sixth valve port (21) and the ninth valve port (24), the first channel and the fourth channel are connected to form a circulation loop; by connecting the first valve port (11) and the second valve port (12), and by connecting the seventh valve port (22) and the eighth valve port (23), the third channel and the second channel are connected to form a circulation passage.

3. The thermal management system according to claim 1, characterized in that: By connecting the eighth valve port (23) and the ninth valve port (24), and by connecting the first valve port (11) and the fourth valve port (14), the first channel, the third channel and the fifth channel are connected in sequence to form a circulation loop; by connecting the second valve port (12) and the third valve port (13), and by connecting the sixth valve port (21) and the seventh valve port (22), the second channel and the fourth channel are connected to form a circulation passage.

4. The thermal management system according to claim 1, characterized in that: By making the tenth valve port (25) and the sixth valve port (21) communicate with each other, and by making the third valve port (13) and the fourth valve port (14) communicate with each other, the sixth channel and the fourth channel are communicated to form a circulation loop; by making the seventh valve port (22) and the eighth valve port (23) communicate with each other, and by making the first valve port (11) and the second valve port (12) communicate with each other, the second channel and the third channel are communicated to form a circulation passage; or By connecting the first valve port (11) and the second valve port (12), connecting the sixth valve port (21) and the seventh valve port (22), connecting the third valve port (13) and the fourth valve port (14), and connecting the eighth valve port (23) and the tenth valve port (25), the second channel, the fourth channel, the sixth channel, and the third channel are connected in sequence to form a circulation passage.

5. The thermal management system according to claim 1, characterized in that: By connecting the second valve port (12) and the third valve port (13), and by connecting the sixth valve port (21) and the seventh valve port (22), the fourth channel and the second channel are connected to form a circulation passage; the first valve port (11) and the fifth valve port (15) are connected, and the eighth valve port (23) and the tenth valve port (25) are connected.

6. The thermal management system according to claim 1, characterized in that: By connecting the first valve port (11) and the second valve port (12), and by connecting the seventh valve port (22) and the eighth valve port (23), the third channel and the second channel are connected to form a circulation passage; the third valve port (13) and the fifth valve port (15) are connected, and the sixth valve port (21) and the tenth valve port (25) are connected.

7. The thermal management system according to claim 1, characterized in that: By connecting the first valve port (11) and the second valve port (12), connecting the seventh valve port (22) and the sixth valve port (21), connecting the third valve port (13) and the fifth valve port (15), and connecting the eighth valve port (23) and the tenth valve port (25), the third channel, the second channel, and the fourth channel are connected in sequence to form a circulation passage.

8. An electric vehicle, characterized in that: A thermal management system comprising any one of claims 1 to 7.

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