A thermal management system, control method, and vehicle

Abstract

The application provides a heat management system, a control method and a vehicle, the heat management system comprising a refrigerant circulation system, a coolant circulation system and a terminal heat exchange assembly; the refrigerant circulation system comprising a first heat exchanger and a second heat exchanger; a heating flow path flowing through the first heat exchanger and a refrigeration flow path flowing through the second heat exchanger; the terminal heat exchange assembly comprising at least two first terminal heat exchange assemblies, each first terminal heat exchange assembly comprising a first terminal component and a first switch valve, the first switch valve being provided with a first passage, a second passage and a communication loop, the first passage, the second passage and the communication loop being mutually isolated; or the communication loop being in communication with the first passage to form a first heat exchange flow path; or the communication loop being in communication with the second passage to form a second heat exchange flow path. Since the first switch valve is provided with multiple different passages and the communication relationship between the passages is different, the number of terminal components can be increased, and more abundant heat management mode switching can be realized.

Description

Technical Field

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

[0002] At present, with the development of new energy vehicles, the thermal management system of vehicles is becoming increasingly important. Current new energy vehicles not only need to control the temperature of the motor, battery, and passenger compartment, but as the functions of new energy vehicles increase and the comfort level improves, other components and locations also need to be temperature controlled. The coolant flow path of the thermal management system usually requires a multi-way valve to switch the working mode. As the number of terminal components increases, the structure of the multi-way valve becomes complex and the development cost is high. In addition, one thermal management system corresponds to one multi-way valve. However, when adding terminal components, the original multi-way valve cannot be used and the multi-way valve needs to be reset, which greatly increases the development time and cost. Therefore, it is particularly important to solve the problem of minimizing the structural changes when adding new terminal components from the thermal management system. Summary of the Invention

[0003] The present invention provides a thermal management system, a control method and a vehicle, which can solve the technical problem that when a terminal component is added to the existing thermal management system, a multi-way valve cannot be used and the multi-way valve needs to be redesigned.

[0004] The present invention provides a thermal management system, which includes a refrigerant circulation system, a coolant circulation system and a terminal heat exchange component;

[0005] The refrigerant circulation system includes a first heat exchanger and a second heat exchanger;

[0006] The coolant circulation system has a heating flow path and a cooling flow path, the heating flow path flows through the first heat exchanger, and the cooling flow path flows through the second heat exchanger;

[0007] The terminal heat exchange assembly includes at least two first terminal heat exchange assemblies, each of which includes a first terminal component and a first switching valve. The first switching valve is provided with a first passage, a second passage, and a communication circuit. The first passage, the second passage, and the communication circuit are isolated from each other. The inlet and outlet of the first passage are respectively connected to the inlet and outlet of the heating flow path, and the inlet and outlet of the second passage are respectively connected to the inlet and outlet of the cooling flow path.

[0008] or the communication circuit is connected to the first passage to form a first heat exchange flow path, the inlet and outlet of the first heat exchange flow path are respectively connected to the inlet and outlet of the heating flow path, and the coolant in the first heat exchange flow path flows through the first terminal component;

[0009] or the communication loop is communicated with the second passage to form a second heat exchange flow path, the inlet and outlet of the second heat exchange flow path are communicated with the inlet and outlet of the refrigeration flow path respectively, and the cooling liquid in the second heat exchange flow path flows through the first end component.

[0010] In some embodiments, the first switch valve has a first state, a second state and a third state, and is switchably arranged between the first state, the second state and the third state, when the first switch valve is in the first state, the refrigeration flow path, the heating flow path and the communication loop are mutually cut off, the inlet and outlet of the first passage are communicated with the inlet and outlet of the heating flow path respectively, and the inlet and outlet of the second passage are communicated with the inlet and outlet of the refrigeration flow path respectively;

[0011] When the first switch valve is in the second state, the communication loop is communicated with the first passage to form a first heat exchange flow path, the inlet and outlet of the first heat exchange flow path are communicated with the inlet and outlet of the heating flow path respectively, and the refrigerant in the first heat exchange flow path flows through the first end component; the inlet and outlet of the second passage are communicated with the inlet and outlet of the refrigeration flow path respectively;

[0012] When the first switch valve is in the third state, the communication loop is communicated with the second passage to form a second heat exchange flow path, the inlet and outlet of the second heat exchange flow path are communicated with the inlet and outlet of the refrigeration flow path respectively, and the refrigerant in the second heat exchange flow path flows through the first end component; the inlet and outlet of the first passage are communicated with the inlet and outlet of the heating flow path respectively.

[0013] In some embodiments, the first switch valve comprises a valve core and a valve seat, the valve core is provided with the first passage, the second passage and the communication loop, the valve seat is provided with a plurality of through valve ports, the inlet and outlet of the first passage, the second passage and the communication loop are correspondingly arranged with the through valve ports respectively, and the valve core is rotatably arranged in the valve seat to switchably arrange between the first state, the second state and the third state.

[0014] In some embodiments, a plurality of first grooves and second grooves are arranged on the outer peripheral wall of the valve core, the first grooves are arranged transversely, the second grooves are arranged vertically, and the two ends of the first grooves are correspondingly arranged with the through valve ports respectively, and the two ends of the second grooves are correspondingly arranged with the through valve ports respectively

[0015] The valve core has three rotating positions, when the valve core is in the first rotating position, the first switch valve is in the first state, three first grooves are arranged side by side on the circumferential outer wall of the valve core and are not communicated with each other, and the three first grooves are the first passage, the communication loop and the second passage respectively;

[0016] When the valve core is in the second rotating position, the first switch valve is in the second state, two second grooves are arranged side by side on the circumferential outer wall of the valve core, and one first groove is arranged below the second grooves in the vertical direction of the second grooves, the two second grooves and the pipeline are communicated to form the first heat exchange flow path, and the first groove is the second passage;

[0017] When the valve core is in the third rotating position, the first switch valve is in the third state, two second grooves are arranged side by side on the circumferential outer wall of the valve core, and one first groove is arranged above the second grooves in the vertical direction of the second grooves, the two second grooves and the pipeline are communicated to form the second heat exchange flow path, and the first groove is the first passage.

[0018] In some embodiments, the terminal heat exchange assembly includes three first terminal heat exchange assemblies arranged in series, the first terminal part of the first first terminal heat exchange assembly is an electric motor control, the first terminal part of the second first terminal heat exchange assembly is a third heat exchanger arranged outside the vehicle, and the first terminal part of the third first terminal heat exchange assembly is a battery.

[0019] In some embodiments, the terminal heat exchange assembly further includes at least two second terminal heat exchange assemblies, the second terminal heat exchange assembly includes a second terminal part, a second switch valve and a third heat exchange loop, the second switch valve is a three-way valve, the first valve port of the second switch valve is communicated with the inlet of the heating flow path or the inlet of the refrigeration flow path, the second valve port of the second switch valve is communicated with the inlet of the third heat exchange loop, the third valve port of the second switch valve is communicated with the outlet of the heating flow path or the outlet of the refrigeration flow path, the outlet of the third heat exchange loop is communicated with the outlet of the heating flow path or the outlet of the refrigeration flow path, and a check valve is arranged at the communication position.

[0020] In some embodiments, the terminal heat exchange assembly includes two second terminal heat exchange assemblies, the second end component of the first second terminal heat exchange assembly is a heating heat exchanger arranged in the vehicle, the first valve port of the first second switching valve is in communication with the inlet of the heating flow path, the second valve port of the first second switching valve is in communication with the inlet of the third heat exchange circuit, the third valve port of the first second switching valve is in communication with the outlet of the heating flow path, the outlet of the third heat exchange circuit is in communication with the outlet of the heating flow path, and a one-way valve is arranged at the communication position.

[0021] The second end component of the second second terminal heat exchange assembly is a cooling heat exchanger arranged in the vehicle, the first valve port of the second second switching valve is in communication with the inlet of the cooling flow path, the second valve port of the second second switching valve is in communication with the inlet of the third heat exchange circuit, the third valve port of the second second switching valve is in communication with the outlet of the cooling flow path, the outlet of the third heat exchange circuit is in communication with the outlet of the cooling flow path, and a one-way valve is arranged at the communication position.

[0022] In some embodiments, the refrigerant circulation system further includes a compressor, a gas-liquid separator, an expansion valve, the first heat exchanger is a plate condenser, and the second heat exchanger is a plate evaporator, the compressor, the first heat exchanger, the expansion valve, the second heat exchanger and the gas-liquid separator are arranged in series.

[0023] The first heat exchanger is provided with a first refrigerant passage and a first cooling liquid passage, the heating flow path is arranged in series with the first heat exchanger, the heating flow path is in communication with the cooling liquid passage, and a first water tank and a first water pump are arranged on the heating flow path.

[0024] The second heat exchanger is provided with a second refrigerant passage and a second cooling liquid passage, the cooling flow path is arranged in series with the second heat exchanger, the cooling flow path is in communication with the second cooling liquid passage, and a second water tank and a second water pump are arranged on the cooling flow path.

[0025] In some embodiments, the compressor, the gas-liquid separator, the expansion valve, the first heat exchanger and the second heat exchanger are arranged outside the passenger cabin.

[0026] A control method for controlling the above-mentioned thermal management system, when the first switching valve has a first state, a second state and a third state, the terminal heat exchange assembly includes three first terminal heat exchange assemblies arranged in series, the first end component of the first first terminal heat exchange assembly is an electric motor control, the first end component of the second first terminal heat exchange assembly is a third heat exchanger arranged outside the vehicle, and the first end component of the third first terminal heat exchange assembly is a battery, the control method comprises:

[0027] When heating is required in the vehicle, the first switching valve of the first first-terminal heat exchange component is in the third state, the first switching valve of the second first-terminal heat exchange component is in the first state, the first switching valve of the third first-terminal heat exchange component is in the third state, the first valve port of the first second switching valve is connected to the inlet of the heating flow path, the second valve port of the first second switching valve is connected to the inlet of the third heat exchange circuit, the third valve port of the first second switching valve is disconnected from the outlet of the heating flow path, and the outlet of the third heat exchange circuit is connected to the outlet of the heating flow path; the first valve port of the second second switching valve is connected to the inlet of the cooling flow path, the second valve port of the second second switching valve is disconnected from the inlet of the third heat exchange circuit, and the third valve port of the second second switching valve is connected to the outlet of the cooling flow path;

[0028] When cooling is required in the vehicle, the first switching valve of the first first-terminal heat exchange component is in the second state, the first switching valve of the second first-terminal heat exchange component is in the second state, the first switching valve of the third first-terminal heat exchange component is in the third state, the first valve port of the first second switching valve is connected to the inlet of the heating flow path, the second valve port of the first second switching valve is disconnected from the inlet of the third heat exchange circuit, and the third valve port of the first second switching valve is connected to the outlet of the heating flow path; the first valve port of the second second switching valve is connected to the inlet of the cooling flow path, the second valve port of the second second switching valve is connected to the inlet of the third heat exchange circuit, the third valve port of the second second switching valve is disconnected from the outlet of the cooling flow path, and the outlet of the third heat exchange circuit is connected to the outlet of the cooling flow path;

[0029] When charging below normal temperature, the first switching valve of the first first-terminal heat exchange component is in the first state, the first switching valve of the second first-terminal heat exchange component is in the second state, the first switching valve of the third first-terminal heat exchange component is in the second state, the first valve port of the first second switching valve is connected to the inlet of the heating flow path, the second valve port of the first second switching valve is disconnected from the inlet of the third heat exchange circuit, and the third valve port of the first second switching valve is connected to the outlet of the heating flow path; the first valve port of the second second switching valve is connected to the inlet of the cooling flow path, the second valve port of the second second switching valve is disconnected from the inlet of the third heat exchange circuit, and the third valve port of the second second switching valve is connected to the outlet of the cooling flow path.

[0030] A vehicle includes a thermal management system, characterized in that the thermal management system is the thermal management system described above.

[0031] The heat management system, control method and vehicle have the following beneficial effects:

[0032] The first passage and the second passage are connected with the heating flow path and the refrigeration flow path respectively, and do not flow through the first end component, and the heat exchange flow path can also flow through the first end component respectively, because the first switching valve is provided with multiple different passages, the connection relationship between the passages is different, the cooling liquid can be selectively delivered to the heating or refrigeration area according to needs, different heat exchange flow paths can be realized, and the different connection modes of the above passages can be realized through one valve, so that when the first end component needs to be added, only one first switching valve needs to be added, and the first switching valve can adjust the connection relationship according to different heat exchange needs, the number of end components is facilitated to be increased, richer heat management mode switching is realized, the problem that a multi-way valve structure needs to be newly developed and arranged when the end component is newly added is solved, and in addition, the heat management system can also control the end components more simply by controlling the first switching valve. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can also be derived from the provided drawings without creative labor.

[0034] Figure 1 It is a schematic diagram of the heat management system of the embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of the first switching valve of the embodiment of the present application in the first state;

[0036] Figure 3 It is a schematic diagram of the first switching valve of the embodiment of the present application in the second state;

[0037] Figure 4 It is a schematic diagram of the first switching valve of the embodiment of the present application in the third state;

[0038] Figure 5 It is a schematic diagram of the structure of the first switching valve of the embodiment of the present application;

[0039] Figure 6 It is an exploded schematic diagram of the first switching valve of the embodiment of the present application

[0040] Figure 7 It is a schematic diagram of the valve core and the sealing element when assembled;

[0041] Figure 8Fig. 1 is a schematic view of a valve core of the present application in a first rotational position;

[0042] Figure 9 Fig. 2 is a schematic view of the valve core of the present application in a second rotational position;

[0043] Figure 10 Fig. 3 is a schematic view of the valve core of the present application in a third rotational position;

[0044] Figure 11 Fig. 4 is a schematic view of a second end heat exchange assembly of the present application;

[0045] Figure 12 Fig. 5 is a schematic view of a thermal management system of the present application when heating is required in a vehicle;

[0046] Figure 13 Fig. 6 is a schematic view of the thermal management system of the present application when cooling is required in the vehicle;

[0047] Figure 14 Fig. 7 is a schematic view of the thermal management system of the present application when charging below room temperature.

[0048] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated herein and constitute a part of this application. The drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings: DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the scope of protection of the present application.

[0050] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] See also Figure 1As shown, according to the embodiment of the present application, a heat management system is provided, comprising a refrigerant circulation system 1, a coolant circulation system and a terminal heat exchange assembly; the refrigerant circulation system 1 comprises a first heat exchanger 101 and a second heat exchanger 102; the coolant circulation system has a heating flow path 31 and a refrigeration flow path 32, the heating flow path 31 flows through the first heat exchanger 101, and the refrigeration flow path 32 flows through the second heat exchanger 102; the terminal heat exchange assembly comprises at least two first terminal heat exchange assemblies 4, each first terminal heat exchange assembly 4 comprises a first terminal component 401 and a first switching valve 402, the first switching valve 402 is provided with a first passage 403, a second passage 404 and a communication loop 405, the first passage 403, the second passage 404 and the communication loop 405 are mutually isolated, the inlet and outlet of the first passage 403 are respectively communicated with the inlet and outlet of the heating flow path 31, the inlet and outlet of the second passage 404 are respectively communicated with the inlet and outlet of the refrigeration flow path 32; or the communication loop 405 is communicated with the first passage 403 to form a first heat exchange flow path 406, the inlet and outlet of the first heat exchange flow path 406 are respectively communicated with the inlet and outlet of the heating flow path 31, and the coolant in the first heat exchange flow path 406 flows through the first terminal component 401; or the communication loop 405 is communicated with the second passage 404 to form a second heat exchange flow path 407, the inlet and outlet of the second heat exchange flow path 407 are respectively communicated with the inlet and outlet of the refrigeration flow path 32, and the coolant in the second heat exchange flow path 407 flows through the first terminal component 401.

[0054] Specifically, high-temperature refrigerant flows in the first heat exchanger 101, after the heating flow path 31 flows through the first heat exchanger 101, the high-temperature refrigerant exchanges heat with the coolant in the heating flow path 31, the temperature of the coolant in the heating flow path 31 rises, low-temperature refrigerant flows in the second heat exchanger 102, and the low-temperature refrigerant exchanges heat with the coolant in the refrigeration flow path 32, the temperature of the coolant in the refrigeration flow path 32 decreases. When the first passage 403, the second passage 404 and the communication loop 405 are mutually isolated, the inlet and outlet of the first passage 403 are respectively communicated with the inlet and outlet of the heating flow path 31, the high-temperature coolant after heat exchange flows into the first passage 403 and flows out from the outlet of the first passage 403, at this time, the coolant directly flows out from the first switching valve 402 and does not flow through the first terminal component 401, that is, the coolant does not exchange heat with the first terminal component 401; the inlet and outlet of the second passage 404 are respectively communicated with the inlet and outlet of the refrigeration flow path 32, the low-temperature coolant after heat exchange flows into the second passage 404 and flows out from the second passage 404, at this time, the coolant also flows out from the first switching valve 402 and does not flow through the first terminal component 401, that is, the coolant does not exchange heat with the first terminal component 401; at this time, the communication loop 405 is neither communicated with the first passage 403 nor communicated with the second passage 404, and the communication loop 405 will not have coolant flowing through it.

[0055] Specifically, when the communication circuit 405 communicates with the first passage 403 to form the first heat exchange flow path 406, the inlet and outlet of the first heat exchange flow path 406 are communicated with the inlet and outlet of the heating flow path 31 respectively, and the cooling liquid in the first heat exchange flow path 406 flows through the first end component 401. At this time, the high-temperature cooling liquid after heat exchange will flow into the first heat exchange flow path 406 and flow through the first end component 401. After the high-temperature cooling liquid exchanges heat with the first end component 401, it flows out of the first heat exchange flow path 406 and flows into the outlet of the heating flow path 31, continues to flow in the heating flow path 31 and exchanges heat with the first heat exchanger 101.

[0056] Specifically, when the communication circuit 405 communicates with the second passage 404 to form the second heat exchange flow path 407, the inlet and outlet of the second heat exchange flow path 407 are communicated with the inlet and outlet of the refrigeration flow path 32 respectively, and the cooling liquid in the second heat exchange flow path 407 flows through the first end component 401. At this time, the low-temperature cooling liquid after heat exchange will flow into the second heat exchange flow path 407 and flow through the first end component 401. After the low-temperature cooling liquid exchanges heat with the first end component 401, it flows out of the second heat exchange flow path 407 and flows into the outlet of the refrigeration flow path 32, continues to flow in the refrigeration flow path 32 and exchanges heat with the second heat exchanger 102.

[0057] In this embodiment, the first passage 403 and the second passage 404 are connected with the heating flow path 31 and the refrigeration flow path 32 respectively, and do not flow through the first end component 401. They can also form heat exchange flow paths that flow through the first end component 401. Since the first switching valve 402 is provided with multiple different passages, the communication relationship between the passages is different, allowing the system to selectively deliver cooling liquid directly to the heating or refrigeration area as needed, enabling different heat exchange flow paths. The different connection modes of the above passages can be realized through one valve. When the first end component 401 needs to be added, only one first switching valve 402 needs to be added. Combined with the first switching valve 402, the communication relationship can be adjusted according to different heat exchange needs, which is beneficial to increase the number of end components and realize more rich heat management mode switching. The problem of redeveloping and setting multiple passage valves when adding end components is solved. In addition, this heat management system can also control each end component more simply by controlling the first switching valve 402.

[0058] In addition, since the system is set to allow the addition or removal of end components without replacing the entire multi-pass valve, development time and cost can be reduced. This setting reduces the dependence on complex multi-pass valve structures, simplifies system settings, and reduces manufacturing and maintenance costs. The number of end components can be easily expanded or reduced as needed to adapt to changing temperature control needs.

[0059] It is worth mentioning that in the embodiment, the most preferred way in the same state is that the communication loop 405 is communicated with the first passage 403 or the second passage 404, and the passage which is not communicated with the communication loop 405 is only passed by the high-temperature coolant or the low-temperature coolant. In other embodiments, the first passage 403 and the second passage 404 can also be communicated with the communication loop 405 at the same time, so that the high-temperature coolant and the low-temperature coolant are mixed and then flow through the first end component 401.

[0060] For reference Figures 1 to 4 The first switching valve 402 has a first state, a second state and a third state, and the first state, the second state and the third state are switchably arranged. When the first switching valve 402 is in the first state, the refrigeration flow path 32, the heating flow path 31 and the communication loop 405 are mutually cut off, the inlet and the outlet of the first passage 403 are communicated with the inlet and the outlet of the heating flow path 31 respectively, and the inlet and the outlet of the second passage 404 are communicated with the inlet and the outlet of the refrigeration flow path 32 respectively. When the first switching valve 402 is in the second state, the communication loop 405 is communicated with the first passage 403 to form a first heat exchange flow path 406, the inlet and the outlet of the first heat exchange flow path 406 are communicated with the inlet and the outlet of the heating flow path 31 respectively, and the coolant in the first heat exchange flow path 406 flows through the first end component 401. The inlet and the outlet of the second passage 404 are communicated with the inlet and the outlet of the refrigeration flow path 32 respectively. When the first switching valve 402 is in the third state, the communication loop 405 is communicated with the second passage 404 to form a second heat exchange flow path 407, the inlet and the outlet of the second heat exchange flow path 407 are communicated with the inlet and the outlet of the refrigeration flow path 32 respectively, and the coolant in the second heat exchange flow path 407 flows through the first end component 401. The inlet and the outlet of the first passage 403 are communicated with the inlet and the outlet of the heating flow path 31 respectively.

[0061] Specifically, according to the requirement of the first end component 401 having normal temperature working state, heating working state and refrigeration working state, the corresponding first switching valve 402 has first state, second state and third state, the first switching valve 402 can flexibly adjust the state according to the heat exchange requirement of the first end component 401, when the first end component 401 does not need refrigeration and heating, the first switching valve 402 is in the first state, that is, the first end component 401 only needs to be kept in the normal temperature state and does not need the cooling liquid to flow through the first end component 401, at this time, the inlet and outlet of the first passage 403 are respectively communicated with the inlet and outlet of the heating flow path 31, the inlet and outlet of the second passage 404 are respectively communicated with the inlet and outlet of the refrigeration flow path 32, the high-temperature cooling liquid and the low-temperature cooling liquid only flow out of the first switching valve 402. When the first end component 401 has heating requirement, the first switching valve 402 is switched to the second state, at this time, the communication loop 405 is communicated with the first passage 403, forming the first heat exchange flow path 406, the high-temperature cooling liquid flows in the first heat exchange flow path 406, the high-temperature cooling liquid flows through the first end component 401, and the second passage 404 is not communicated with the communication loop 405, the low-temperature cooling liquid only flows through the first switching valve 402. When the first end component 401 has cooling requirement, the first switching valve 402 is switched to the third state, at this time, the communication loop 405 is communicated with the second passage 404, forming the second heat exchange flow path 407, the low-temperature cooling liquid flows in the second heat exchange flow path 407, the low-temperature cooling liquid flows through the first end component 401, the first passage 403 is not communicated with the communication loop 405, and the high-temperature cooling liquid only flows through the first switching valve 402.

[0062] In this embodiment, by switching the different states of the first switching valve 402, the three working states of normal temperature, heating and cooling of the first end component 401 can be controlled. This multi-mode control enables the thermal management system to be flexibly adjusted according to the specific needs of the first end component 401, providing more precise temperature control. When cooling or heating is not required, the first state of the first switching valve 402 allows high-temperature and low-temperature coolants to flow directly through the first switching valve 402, avoiding unnecessary heat exchange, thereby improving the energy efficiency of the system; when the first end component 401 needs to be heated, the connecting circuit 405 is connected to the first passage 403 by switching to the second state to form a first heat exchange flow path 406, so that the high-temperature coolant flows through the first end component 401 to achieve heating. When cooling is required, the connecting circuit 405 is connected to the second passage 404 by switching to the third state to form a second heat exchange flow path 407, so that the low-temperature coolant flows through the first end component 401 to achieve cooling. In this embodiment, by providing the first passage 403, the second passage 404, and the connecting loop 405, the number of valves required in the system can be reduced, simplifying the system configuration. This configuration reduces the complexity of the pipelines and valves, and reduces the maintenance cost and failure rate of the system. Moreover, this configuration allows the system to easily add more terminal heat exchange components when needed in the future without having to reconfigure the entire thermal management system on a large scale, thereby improving the adaptability and scalability of the system. Compared with valve structures such as two-way valves, three-way valves, and four-way valves, the first switching valve 402 in this embodiment can, to a certain extent, reduce the number of valves and simplify the system configuration, thereby reducing the manufacturing and maintenance costs of the system and improving cost-effectiveness. The first switching valve 402 in this embodiment has these three states and is also set based on the three most commonly required requirements of the first terminal component 401. Compared with valve structures with more than ten ports, it can not only meet the heat exchange requirements, but also simplify the valve structure, thereby achieving the addition of the first terminal component 401 without changing the valve structure.

[0063] It is worth noting that in this embodiment, when the first end component 401 has a heating demand, although the high-temperature coolant flows into the heating circuit and then flows through the first end component 401, when the temperature of the first end component 401 is higher than the temperature of the high-temperature coolant, the flowing high-temperature coolant is actually used to cool the first end component 401. The specific first end component 401 can be the motor electronic control and the battery. The operating temperatures of these two end components are higher than the temperature of the high-temperature coolant in the first heat exchange flow path 406.

[0064] See also Figures 1 to 7, characterized in that the first switching valve 402 includes a valve core 421 and a valve seat 422, the valve core 421 is provided with a first passage 403, a second passage 404 and a connecting circuit 405, and a plurality of conducting valve ports 423 are provided on the valve seat 422, the inlets and outlets of the first passage 403, the second passage 404 and the connecting circuit 405 are respectively provided corresponding to the conducting valve ports 423, and the valve core 421 is rotatably provided in the valve seat 422 so as to be switchable between the first state, the second state and the third state.

[0065] Specifically, six conducting valve ports 423 are provided on the valve seat 422 of this embodiment, and the conducting valve ports 423 are arranged in 2 rows of 4. The first switching valve 402 needs to realize three states, and independent valve cores 421 and valve seats 422 are provided. The valve core 421 can rotate to realize different connection states. Every time the first switching valve 402 changes its state, the valve core 421 must rotate once.

[0066] In this embodiment, the arrangement of the valve core 421 and valve seat 422 allows for precise control of the refrigerant and coolant flow paths. Rotation of the valve core 421 precisely connects the different paths (the first path 403, the second path 404, and the communication loop 405) to the corresponding conduction valve ports 423, achieving precise control of the flow paths. Rotation of the valve core 421 enables the first switching valve 402 to switch between three different states to accommodate varying temperature control requirements. This arrangement provides a simple and effective method for changing the flow path connection method, thereby achieving different thermal management functions. Compared with a complex multi-way valve system, this setting realizes the switching of multiple flow paths through a rotatable valve core 421 and a fixed valve seat 422, which simplifies the mechanical structure, reduces the number of components, and reduces manufacturing and maintenance costs. Since the setting of the valve core 421 and the valve seat 422 is relatively simple, the potential failure points are reduced, the reliability of the entire thermal management system is improved, and the response speed of the thermal management system to temperature changes is improved. Moreover, by precisely controlling the flow path, unnecessary energy loss can be reduced. For example, when heat exchange is not required, the corresponding flow path can be cut off, thereby reducing energy consumption.

[0067] As a specific embodiment, the structure of the first passage 403 and the second passage 404 can be a blind hole structure provided in the valve core 421, and a related valve plate can be provided between the blind hole structures to control the on-off state. Alternatively, it can be a groove structure provided on the circumferential outer wall of the valve core 421, and the two ends of the groove structure are respectively connected to the conduction valve port 423 to form a loop. Alternatively, it can be a combination of a blind hole structure and a groove structure, as long as the three states of the first switching valve 402 in this embodiment can be achieved. In order to facilitate the flow of the communication circuit 405 through the first end component 401, the communication circuit 405 is provided with related pipelines, and the pipelines flow through the first end component 401, or the first end component 401 is provided with related pipelines, and the heat exchange circuit formed is connected to the pipelines of the first end component 401.

[0068] See also Figures 8 to 10 As shown, a plurality of first grooves 424 and second grooves 425 are provided on the outer peripheral wall of the valve core 421, the first grooves 424 are arranged horizontally, and the second grooves 425 are arranged vertically, and the two ends of the first groove 424 are respectively arranged corresponding to the conduction valve port 423, and the two ends of the second groove 425 are respectively arranged corresponding to the conduction valve port 423. The valve core 421 has three rotation positions. When the valve core 421 is in the first rotation position, the first switching valve 402 is in the first state, and three first grooves 424 that are not connected to each other are arranged side by side on the circumferential outer wall of the valve core 421. The three first grooves 424 are respectively the first passage 403, the communication circuit 405 and the second passage 404; when the valve core 421 is in the second rotation position, the first switching valve 402 is in the second state. state, two second grooves 425 arranged in parallel are provided on the circumferential outer wall of the valve core 421, and a first groove 424 is provided below the second groove 425 in the vertical direction of the second groove 425, the two second grooves 425 are connected with the pipeline to form a first heat exchange flow path 406, and the first groove 424 is the second passage 404; when the valve core 421 is located at the third rotation position, the first switching valve 402 is in the third state, two second grooves 425 arranged in parallel are provided on the circumferential outer wall of the valve core 421, and a first groove 424 is provided above the second groove 425 in the vertical direction of the second groove 425, the two second grooves 425 are connected with the pipeline to form a second heat exchange flow path 407, and the first groove 424 is the first passage 403.

[0069] Specifically, the first end component 401 only needs to maintain room temperature, the valve core 421 is in the first rotation position, the first switching valve 402 is in the first state, and three first grooves 424 that are not connected to each other are arranged side by side on the circumferential outer wall of the valve core 421. From the top to the bottom of the valve core 421, the three first grooves 424 are respectively the first passage 403, the connecting loop 405 and the second passage 404, that is, one end of the first groove is the inlet of the first passage 403, and this end corresponds to a conducting valve port 423, and the inlet of the heating flow path 31 is connected to the conducting valve port 423. The other end of the first first groove 424 is the outlet of the first passage 403, and this end also corresponds to a conducting valve port 423. After the outlet of the heating flow path 31 is connected with the conducting valve port 423, combined with the structure of the first groove 424, the high-temperature coolant flows into one end of the first groove 424 and then flows out from the other end of the first groove 424; similarly, the structure of the third first groove 424 is the same as that of the first groove 424, the difference is that the corresponding conducting valve port 423 must be connected to the cooling flow path 32, and at this time no coolant will flow into the connecting circuit 405.

[0070] Specifically, when the first end component 401 needs to heat, the valve core 421 is in the second rotation position, the first switching valve 402 is in the second state, and two second grooves 425 arranged in parallel are provided on the circumferential outer wall of the valve core 421. In the vertical direction of the second grooves 425, the two second grooves 425 are connected to the pipeline to form the first heat exchange flow path 406. At this time, the upper end of the left second groove 425 is connected to the inlet of the heating flow path 31, and the coolant flows out from the lower end of the left second groove 425. After the coolant flows through the first end component 401 along the pipeline, the coolant flows into the lower end of the second groove 425 on the right side, and the outlet of the heating flow path 31 is connected with the upper end of the second groove 425 on the right side, and the coolant flows into the heating circuit again; a first groove 424 is provided below the second groove 425, and the first groove 424 is the second passage 404, that is, the left end of the first groove 424 is connected with the inlet of the cooling flow path 32, and the right end of the first groove 424 is connected with the outlet of the cooling flow path 32.

[0071] Specifically, when the first end component 401 needs to be cooled and the valve core 421 is in the third rotation position, the first switching valve 402 is in the third state, and two second grooves 425 arranged in parallel are provided on the circumferential outer wall of the valve core 421. In the vertical direction of the second grooves 425, the two second grooves 425 are connected to the pipeline to form the second heat exchange flow path 407. At this time, the lower end of the left second groove 425 is connected to the inlet of the heating flow path 31, and the coolant flows out from the upper end of the left second groove 425. After the coolant flows through the first end component 401 along the pipeline, the coolant flows into the upper end of the second groove 425 on the right side, and the outlet of the heating flow path 31 is connected with the lower end of the second groove 425 on the right side, and the coolant then flows into the refrigeration circuit; a first groove 424 is provided above the second groove 425, and the first groove 424 is the first passage 403, that is, the left end of the first groove 424 is connected with the inlet of the heating flow path 31, and the right end of the first groove 424 is connected with the outlet of the heating flow path 31.

[0072] Specifically, by setting the groove on the valve core 421, the flow direction and flow path of the high-temperature coolant and the low-temperature coolant can be accurately controlled to ensure that the coolant flows through the first end component 401 for heat exchange when needed, or flows directly around the end component. The corresponding relationship between the groove and the conducting valve port 423 is changed by rotating the valve core 421, which simplifies the mechanical operation, reduces the number of valves required, and reduces the complexity and cost of the system. Moreover, by setting the groove structure, the rotation of the valve core 421 can quickly change the flow path, thereby improving the response speed of the thermal management system to temperature changes, so that the system can quickly adapt to temperature changes.

[0073] In addition, the arrangement of the first groove 424 and the second groove 425 of this embodiment is based on the fact that the first end component 401 of this embodiment must meet at least three requirements of normal temperature, heating and cooling. The horizontal arrangement of the first groove 424 and the vertical arrangement of the second groove 425 enable the valve core 421 to accurately control the flow direction of the fluid by rotation. At different rotational positions, the corresponding relationship between the first groove 424 and the second groove 425 and the conduction valve port 423 changes, thereby controlling the connection or disconnection of different flow paths.

[0074] As a specific implementation method, this embodiment divides the valve core 421 from 360° into three parts, each part is 120°, that is, every time the valve core 421 rotates 120°, the valve core 421 rotates once. The valve core 421 is cylindrical in shape, and the arrangement of the grooves is conducive to the conduction between the valve core 421 and the inlet and outlet of the valve body. There are three working states of the end component, so the valve core 421 can be divided into three parts, and each part has three grooves, which serve as channels connecting the hot circuit, the cold circuit, and the inlet and outlet of the end component, and can prevent them from communicating with each other. Through this division, the hot circuit, the cold circuit, and the inlet and outlet of the end component can all be placed on one side, which facilitates the connection of the system flow path and at the same time achieves the shortest distance from the inlet to the outlet, reducing the distance of one internal flow path.

[0075] As a specific implementation, the first switching valve 402 in this embodiment is essentially a six-way valve, and a seal 6 is provided between the valve core 421 and the valve seat 422. The seal 6 is generally annular, and an avoidance hole is provided on the seal 6 for conducting the connection between the valve port 423 and the channel. The seal 6 isolates the six channels in the valve core 421 and the valve seat 422 from each other to prevent the coolant in each channel from mixing with each other.

[0076] See also Figures 1 to 3 As shown, the terminal heat exchange component includes three first terminal heat exchange components 4 arranged in series in sequence, the first terminal component 401 of the first first terminal heat exchange component 4 is a motor electronic control, the first terminal component 401 of the second first terminal heat exchange component 4 is a third heat exchanger arranged outside the vehicle, and the first terminal component 401 of the third first terminal heat exchange component 4 is a battery.

[0077] In this embodiment, according to the terminal component setting of the automobile, a motor electronic control, a third heat exchanger and a battery are provided. When the valve core 421 of the first first terminal heat exchange component 4 is in the second rotation position, the first switching valve 402 is in the second state. At this time, the communication circuit 405 is connected with the first passage 403, and the high-temperature coolant in the heating flow path 31 flows into the first heat exchange flow path 406. At this time, the coolant in the first heat exchange flow path 406 flows through the motor electronic control. Although the coolant in the heating flow path 31 flows through the motor electronic control, the temperature of the motor electronic control is still The temperature of the high-temperature coolant is higher than that of the high-temperature coolant. Therefore, the high-temperature coolant actually cools the motor and electronic control. Similarly, when the valve core 421 of the third first-terminal heat exchange assembly 4 is in the second rotational position and the first switching valve 402 is in the second state, the communication circuit 405 is now connected to the first passage 403. When the first-terminal component 401 is a battery, the high-temperature coolant similarly cools the battery. Considering that the various terminal components are connected in series, the high-temperature coolant flows through the motor and electronic control, then flows into the third heat exchanger for heat dissipation, and then flows into the battery to cool the battery. When the valve cores 421 of both the first and third first-terminal heat exchange assemblies 4 are in the third rotational position and the first switching valve 402 is in the third state, the communication circuits 405 are now connected to the first passage 403, and the low-temperature coolant cools the motor and electronic control.

[0078] See also Figure 11 As shown, the terminal heat exchange component also includes at least two second terminal heat exchange components 5, the second terminal heat exchange component 5 includes a second terminal component 501, a second switching valve 502 and a third heat exchange circuit 503, the second switching valve 502 is a three-way valve, the first valve port of the second switching valve 502 is connected to the inlet of the heating flow path 31 or the inlet of the cooling flow path 32, the second valve port of the second switching valve 502 is connected to the inlet of the third heat exchange circuit 503, the third valve port of the second switching valve 502 is connected to the outlet of the heating flow path 31 or the outlet of the cooling flow path 32, the outlet of the third heat exchange circuit 503 is connected to the outlet of the heating flow path 31 or the outlet of the cooling flow path 32, and a one-way valve 504 is provided at the connection point.

[0079] In this embodiment, depending on the heat exchange requirements of the second terminal component 501, the second terminal component 501 only has cooling and normal temperature requirements or heating and normal temperature requirements, and there is no need to consider the cooling and heating requirements. The second switching valve 502 acts as a three-way valve to control the flow direction of the fluid between the heating flow path 31 and the cooling flow path 32. This configuration allows the system to flexibly switch the fluid from the heating flow path 31 or the cooling flow path 32 to normal temperature as needed.

[0080] See also Figures 1 to 11As shown, the end heat exchange assembly includes two second end heat exchange assemblies 5, the second end component 501 of the first second end heat exchange assembly 5 is a heating heat exchanger arranged in the vehicle, the first valve port of the first second switching valve 502 is in communication with the inlet of the heating flow path 31, the second valve port of the first second switching valve 502 is in communication with the inlet of the third heat exchange circuit 503, the third valve port of the first second switching valve 502 is in communication with the outlet of the heating flow path 31, the outlet of the third heat exchange circuit 503 is in communication with the outlet of the heating flow path 31, and a one-way valve 504 is arranged at the communication position; the second end component 501 of the second second end heat exchange assembly 5 is a cooling heat exchanger arranged in the vehicle, the first valve port of the second second switching valve 502 is in communication with the inlet of the cooling flow path 32, the second valve port of the second second switching valve 502 is in communication with the inlet of the third heat exchange circuit 503, the third valve port of the second second switching valve 502 is in communication with the outlet of the cooling flow path 32, the outlet of the third heat exchange circuit 503 is in communication with the outlet of the cooling flow path 32, and a one-way valve 504 is arranged at the communication position.

[0081] In this embodiment, the heating heat exchanger in the vehicle has only two modes of heating demand for the passenger compartment or no heating demand, the cooling heat exchanger in the vehicle also has only two modes of cooling demand for the passenger compartment or no cooling demand, and the mode demand of the second end component 501 is reduced compared with the first end component 401. By using two independent second end heat exchange assemblies 5, the heating heat exchanger and the cooling heat exchanger in the vehicle can be controlled respectively, which allows the system to independently adjust heating and cooling according to the actual temperature demand in the vehicle, improves the accuracy and comfort of temperature control, and through the control of the fluid flow direction by the three-way valve, the heat energy can be more effectively utilized, and the energy waste is reduced, for example, when the heating or cooling demand is low, the flow of fluid to the corresponding heat exchanger can be reduced, thereby saving energy, and the arrangement of the one-way valve 504 ensures that the fluid can only flow in one direction, preventing the reverse flow of the cooling liquid and ensuring the safe and stable operation of the system.

[0082] In addition, the working state of the second end component 501 has only two states, refrigeration or heating and normal temperature state, the vehicle interior heating heat exchanger and the vehicle interior refrigeration heat exchanger have only two states, the second switching valve 502 is set as the first switching valve 402, and one mode is in a useless state, the second end component 501 has only two modes, and the control of the end component of this type can be met. At the same time, in terms of cost, the second switching valve 502 is cheaper than the first switching valve 402, and in terms of size, the second switching valve 502 is smaller than the first switching valve 402. For the end component with only two modes, the use of the second switching valve 502 can reduce the volume and make it lightweight, and can also reduce the cost. The function of the one-way valve 504 is to prevent the cooling liquid in the cooling liquid refrigeration flow path 32 or the cooling liquid heating flow path 31 from flowing into the end component when the end component is in the normal temperature working mode, so that it has a certain refrigeration or heating effect.

[0083] As a specific embodiment, the terminal heat exchange component includes three first terminal heat exchange components 4 arranged in series in sequence, the first terminal component 401 of the first first terminal heat exchange component 4 is a motor electronic control, the first terminal component 401 of the second first terminal heat exchange component 4 is a third heat exchanger arranged outside the vehicle, and the first terminal component 401 of the third first terminal heat exchange component 4 is a battery; the terminal heat exchange component includes two second terminal heat exchange components 5, the second terminal component 501 of the first second terminal heat exchange component 5 is a heating heat exchanger arranged in the vehicle, and the second terminal component 501 of the second second terminal heat exchange component 5 is a cooling heat exchanger arranged in the vehicle, and the second terminal component 501 of the first second terminal heat exchange component 5 and the second terminal component 501 of the second second terminal heat exchange component 5 are arranged in series between the third heat exchanger and the battery. When the passenger compartment needs to be heated, the high-temperature coolant needs to flow through the heating heat exchanger. The heating flow path 31 flows through the first passage 403 of the first switching valve, the first passage 403 of the second switching valve, the third heat exchange circuit 503 of the first second end heat exchange component 5 and the first passage 403 of the third first switching valve 402 in sequence. The cooling flow path 32 flows through the second heat exchange flow path 407 of the first switching valve, the second passage 404 of the second switching valve, the third valve port 423 of the second second end heat exchange component 5 and the second heat exchange flow path 407 of the third switching valve in sequence. When the passenger compartment needs to be cooled, the heating flow path 31 flows through the first heat exchange flow path 406 of the first first switching valve 402, the first heat exchange flow path 406 of the second first switching valve 402, the third valve port of the first second switching valve 502 and the first passage 403 of the third first switching valve 402 in sequence, and the cooling flow path 32 flows through the second passage 404 of the first first switching valve 402, the second passage 404 of the second switching valve, the third heat exchange circuit 503 of the second second end heat exchange component 5 and the second heat exchange flow path 407 of the third switching valve in sequence. When charging below room temperature is required, the battery dissipates heat, and the heating flow path 31 flows through the first passage 403 of the first first switching valve 402, the first heat exchange flow path 406 of the second first switching valve 402, the third valve port of the first second switching valve 502 and the first heat exchange flow path 406 of the third first switching valve 402 in sequence, and the cooling flow path 32 flows through the second passage 404 of the first switching valve, the first passage 403 of the second switching valve, the third valve port 423 of the second second end heat exchange component 5 and the second passage 404 of the third switching valve in sequence.

[0084] See also Figures 1 to 11As shown, the refrigeration cycle system 1 also includes a compressor 103, a gas-liquid separator 104, and an expansion valve 105. The first heat exchanger 101 is a plate condenser, and the second heat exchanger 102 is a plate evaporator. The compressor 103, the first heat exchanger 101, the expansion valve 105, the second heat exchanger 102 and the gas-liquid separator 104 are arranged in series in sequence; the first heat exchanger 101 is provided with a first refrigerant channel and a first coolant channel, the heating flow path 31 is arranged in series with the first heat exchanger 101, the heating flow path 31 is connected to the coolant channel, and a first water kettle 311 and a first water pump 312 are provided on the heating flow path 31; the second heat exchanger 102 is provided with a second refrigerant channel and a second coolant channel, the cooling flow path 32 is arranged in series with the second heat exchanger 102, the cooling flow path 32 is connected to the second coolant channel, and a second water kettle 321 and a second water pump 322 are provided on the cooling flow path 32.

[0085] Specifically, the plate condenser and the plate evaporator participate in both the refrigerant flow and the coolant flow, and both refrigerant and coolant pass through the inside. The refrigerant and the coolant exchange heat by circulating inside the plate condenser and the plate evaporator plate, thereby realizing the heat exchange between the refrigerant flow path and the coolant flow path, and indirectly utilizing the refrigerant flow path to achieve cooling or heating effects on terminal components such as the passenger compartment and electrical devices (such as batteries, motors and electronic controls).

[0086] See also Figures 1 to 11 As shown, the compressor 103 , the gas-liquid separator 104 , the expansion valve 105 , the first heat exchanger 101 and the second heat exchanger 102 are arranged outside the passenger compartment.

[0087] In this embodiment, considering that the refrigerant end is placed outside the passenger compartment, the plate evaporator plate and the plate condenser at the refrigerant end need to be separately connected to the coolant flow path for heat exchange, and the refrigeration circuit and the heating circuit are set at the same time to prevent the refrigerant from leaking into the passenger compartment; the working state of the terminal component will be set to (normal temperature, cooling, heating) state due to different needs, and the terminal control module can control a working state of the terminal component so that its heating flow path 31 or the cooling flow path 32 does not flow through the terminal component. The thermal management system can be divided into three independent heat exchange circuits during operation, one is the refrigerant circuit, the second is the coolant end refrigeration circuit, and the third is the coolant end heating circuit. The refrigerant circulation system 1 is placed outside the passenger compartment, which can reduce the risk of refrigerant leakage into the passenger compartment.

[0088] See also Figures 12 to 14As shown, a control method is provided for controlling the above-mentioned thermal management system. When the first switching valve 402 has a first state, a second state, and a third state, the terminal heat exchange assembly includes three first terminal heat exchange assemblies 4 arranged in series, the first terminal component 401 of the first first terminal heat exchange assembly 4 is a motor electronic control, the first terminal component 401 of the second first terminal heat exchange assembly 4 is a third heat exchanger arranged outside the vehicle, and the first terminal component 401 of the third first terminal heat exchange assembly 4 is a battery, the control method includes:

[0089] S1: When heating is required in the vehicle, the first switching valve 402 of the first first-end heat exchange component 4 is in the third state, the first switching valve 402 of the second first-end heat exchange component 4 is in the first state, the first switching valve 402 of the third first-end heat exchange component 4 is in the third state, the first valve port of the first second switching valve 502 is connected to the inlet of the heating flow path 31, the second valve port of the first second switching valve 502 is connected to the inlet of the third heat exchange circuit 503, the third valve port of the first second switching valve 502 is disconnected from the outlet of the heating flow path 31, and the outlet of the third heat exchange circuit 503 is connected to the outlet of the heating flow path 31; the first valve port of the second second switching valve 502 is connected to the inlet of the cooling flow path 32, the second valve port of the second second switching valve 502 is disconnected from the inlet of the third heat exchange circuit 503, and the third valve port of the second second switching valve 502 is connected to the outlet of the cooling flow path 32;

[0090] Specifically, when the heat management system needs to operate in a scheme of heating the passenger cabin, cooling the motor (heat recovery), and cooling the battery (heat recovery), for the refrigerant circulation, the refrigerant is compressed by the compressor 103 and enters the plate condenser, the high-temperature refrigerant is throttled by the throttle valve and enters the plate evaporator to absorb heat, and finally flows back to the compressor 103 through the vapor-liquid separator to form a refrigerant circulation. For the cooling liquid circulation, the high-temperature cooling liquid needs to flow through the heating heat exchanger, the heating flow path 31 sequentially flows through the first passageway 403 of the first first switching valve 402, the first passageway 403 of the second first switching valve 402, the third heat exchange circuit 503 of the first second end heat exchange assembly 5, and the first passageway 403 of the third first switching valve 402, and the refrigeration flow path 32 sequentially flows through the second heat exchange circuit 407 of the first first switching valve 402, the second passageway 404 of the second first switching valve 402, the third valve port 423 of the second second end heat exchange assembly 5, and the second heat exchange circuit 407 of the third first switching valve 402. Among them, the low-temperature cooling liquid exchanged by the plate evaporator sequentially passes through the second water kettle 321, the second water pump 322, the motor electronic control, and the battery to finally form a circulation to the plate evaporator to realize the cooling of the motor electronic control and the battery, at this time, the cooling liquid realizes the heat recovery by heat exchange with the motor electronic control and the battery; the high-temperature cooling liquid exchanged by the plate condenser sequentially passes through the first water kettle 311, the first water pump 312, and the in-vehicle heating heat exchanger to finally form a circulation to the plate condenser to realize the heating of the passenger cabin. In this mode, the heat generated by the battery and the motor electronic control can be recovered and used for heating the passenger cabin, and the heating capacity can be improved through this heat recovery mode.

[0091] S2: When the vehicle needs to be cooled, the first switching valve 402 of the first end heat exchange assembly 4 is in the second state, the first switching valve 402 of the second end heat exchange assembly 4 is in the second state, the first switching valve 402 of the third end heat exchange assembly 4 is in the third state, the first valve port of the first second switching valve 502 is in communication with the inlet of the heating flow path 31, the second valve port of the first second switching valve 502 is disconnected from the inlet of the third heat exchange circuit 503, and the third valve port of the first second switching valve 502 is in communication with the outlet of the heating flow path 31; the first valve port of the second second switching valve 502 is in communication with the inlet of the refrigeration flow path 32, the second valve port of the second second switching valve 502 is in communication with the inlet of the third heat exchange circuit 503, and the third valve port of the second second switching valve 502 is disconnected from the outlet of the refrigeration flow path 32, and the outlet of the third heat exchange circuit 503 is in communication with the outlet of the refrigeration flow path 32;

[0092] Specifically, to achieve passenger compartment cooling, battery cooling, and motor and electronic control heat dissipation, the high-temperature coolant exchanged by the plate condenser in the coolant heating flow path 31 sequentially passes through the first water kettle 311, the first water pump 312, the motor and electronic control, and the external heat exchanger, ultimately returning to the plate condenser to complete the cycle. Heat is dissipated to the environment by the external fan 7 in the third heat exchanger. Furthermore, when the motor and electronic control require heat dissipation, this can be achieved simultaneously. The low-temperature coolant exchanged by the plate evaporator in the cooling flow path 32 sequentially passes through the second water kettle 321, the second water pump 322, the in-vehicle cooling heat exchanger, and the battery, ultimately returning to the plate evaporator to complete the cycle, cooling the passenger compartment and battery. In this mode, the passenger compartment can be cooled, the battery can be cooled, and the motor and electronic control can be dissipated. Because the temperature of the motor and electronic control is higher than the temperature of the coolant after flowing through the plate condenser, the coolant flowing out here can be used to dissipate heat from the motor and electronic control. Then, the high-temperature liquid after passing through the motor and electronic control dissipates heat to the outside of the vehicle through the external fan 7. In this way, the motor and electronic control are placed in the heating circuit for heat dissipation, without the need to use the cooling flow path 32 for cooling. This can achieve heat dissipation of the motor and electronic control while improving the cooling effect.

[0093] S3: When charging below normal temperature, the first switching valve 402 of the first first-end heat exchange component 4 is in the first state, the first switching valve 402 of the second first-end heat exchange component 4 is in the second state, the first switching valve 402 of the third first-end heat exchange component 4 is in the second state, the first valve port of the first second switching valve 502 is connected to the inlet of the heating flow path 31, the second valve port of the first second switching valve 502 is disconnected from the inlet of the third heat exchange circuit 503, and the third valve port of the first second switching valve 502 is connected to the outlet of the heating flow path 31; the first valve port of the second second switching valve 502 is connected to the inlet of the cooling flow path 32, the second valve port of the second second switching valve 502 is disconnected from the inlet of the third heat exchange circuit 503, and the third valve port of the second second switching valve 502 is connected to the outlet of the cooling flow path 32.

[0094] Specifically, in the operating scheme for battery heat dissipation when charging below room temperature, only the coolant heating flow path 31 is working, and the refrigerant flow path and the coolant cooling flow path 32 are not involved in the work. For the coolant circulation, the corresponding motor electronic control end is switched to mode, and the heating flow path 31 flows through the first passage 403 of the first switching valve, the first heat exchange flow path 406 of the second switching valve, the third valve port of the first second switching valve 502 and the first heat exchange flow path 406 of the third first switching valve 402 in sequence. The cooling flow path 32 flows through the second passage 404 of the first switching valve, the first passage 403 of the second first switching valve 402, the third valve port 423 of the second second end heat exchange component 5 and the second passage 404 of the third first switching valve 402 in sequence. In the coolant heating flow path 31, ambient-temperature coolant from the plate condenser passes sequentially through the first water kettle 311, the first water pump 312, the external heat exchanger, and the battery, ultimately returning to the plate condenser, completing the cycle. Heat is dissipated to the surrounding environment by the external fan 7 in the external heat exchanger, dissipating heat from the battery. This embodiment achieves heat dissipation from the battery without activating the compressor 103, thus reducing power consumption. In this mode, only the coolant heating flow path 31 circulates, while the coolant cooling flow path 32 does not. In this type of solution, the refrigerant flow path is not involved in operation, and the coolant cooling flow path 32 and the coolant heating flow path 31 do not need to exchange heat with the refrigerant flow path. Simply connect the required terminal components to either the coolant heating flow path 31 or the coolant cooling flow path 32, and place the other non-required terminal components outside the required flow path. This working flow path then circulates, allowing either the coolant heating flow path 31 or the coolant cooling flow path 32 to function.

[0095] It is worth noting that the thermal management system of this embodiment can not only realize the above three operating schemes. In addition to these three schemes, different operating schemes can be formed by adding different mode combinations of the first terminal heat exchange component 4 and the second terminal heat exchange component 5 according to needs, so as to meet the increasing demand for new energy vehicle functions. For example, a refrigerator can be added to the car, and the refrigerator obviously also has cooling and heating needs, or a dehumidifier or a heat exchanger can be added for dehumidification.

[0096] A vehicle includes a thermal management system, wherein the thermal management system is the thermal management system described above.

[0097] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0098] The above merely describes the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermal management system, characterized in that: include: Refrigerant circulation system (1), coolant circulation system and terminal heat exchange component; The refrigerant circulation system (1) comprises a first heat exchanger (101) and a second heat exchanger (102); The cooling liquid circulation system comprises a heating flow path (31) and a cooling flow path (32), wherein the heating flow path (31) flows through the first heat exchanger (101), and the cooling flow path (32) flows through the second heat exchanger (102); The terminal heat exchange assembly comprises at least two first terminal heat exchange assemblies (4), the first terminal heat exchange assembly (4) comprising a first terminal component (401) and a first switching valve (402), the first switching valve (402) being provided with a first passage (403), a second passage (404) and a communication circuit (405), the first passage (403), the second passage (404) and the communication circuit (405) being isolated from each other, the inlet and outlet of the first passage (403) being respectively connected to the inlet and outlet of the heating flow path (31), and the inlet and outlet of the second passage (404) being respectively connected to the inlet and outlet of the cooling flow path (32); or the communication circuit (405) is connected to the first passage (403) to form a first heat exchange flow path (406), the inlet and outlet of the first heat exchange flow path (406) are respectively connected to the inlet and outlet of the heating flow path (31), and the coolant in the first heat exchange flow path (406) flows through the first terminal component (401); Or the connecting circuit (405) is connected to the second passage (404) to form a second heat exchange flow path (407), the inlet and outlet of the second heat exchange flow path (407) are respectively connected to the inlet and outlet of the refrigeration flow path (32), and the coolant in the second heat exchange flow path (407) flows through the first terminal component (401).

2. The thermal management system according to claim 1, characterized in that The first switching valve (402) has a first state, a second state, and a third state, and is switchable between the first state, the second state, and the third state. When the first switching valve (402) is in the first state, the cooling flow path (32), the heating flow path (31), and the communication circuit (405) are isolated from each other, the inlet and outlet of the first passage (403) are respectively connected to the inlet and outlet of the heating flow path (31), and the inlet and outlet of the second passage (404) are respectively connected to the inlet and outlet of the cooling flow path (32). When the first switching valve (402) is in the second state, the communication circuit (405) is connected to the first passage (403) to form a first heat exchange flow path (406), the inlet and outlet of the first heat exchange flow path (406) are respectively connected to the inlet and outlet of the heating flow path (31), and the coolant in the first heat exchange flow path (406) flows through the first terminal component (401); the inlet and outlet of the second passage (404) are respectively connected to the inlet and outlet of the cooling flow path (32); When the first switching valve (402) is in the third state, the connecting circuit (405) is connected to the second passage (404) to form a second heat exchange flow path (407), the inlet and outlet of the second heat exchange flow path (407) are respectively connected to the inlet and outlet of the refrigeration flow path (32), and the coolant in the second heat exchange flow path (407) flows through the first terminal component (401); the inlet and outlet of the first passage (403) are respectively connected to the inlet and outlet of the heating flow path (31).

3. The thermal management system according to claim 2, characterized in that: The first switching valve (402) includes a valve core (421) and a valve seat (422), the valve core (421) is provided with the first passage (403), the second passage (404) and the connecting circuit (405), and the valve seat (422) is provided with a plurality of conducting valve ports (423), the inlets and outlets of the first passage (403), the second passage (404) and the connecting circuit (405) are respectively provided corresponding to the conducting valve ports (423), and the valve core (421) is rotatably provided in the valve seat (422) so as to be switchable between the first state, the second state and the third state.

4. The thermal management system according to claim 3, characterized in that: A plurality of first grooves (424) and second grooves (425) are provided on the outer peripheral wall of the valve core (421), wherein the first grooves (424) are arranged horizontally and the second grooves (425) are arranged vertically, and the two ends of the first grooves (424) are respectively arranged corresponding to the conduction valve port (423), and the two ends of the second grooves (425) are respectively arranged corresponding to the conduction valve port (423). The valve core (421) has three rotational positions. When the valve core (421) is in the first rotational position, the first switching valve (402) is in the first state. Three mutually unconnected first grooves (424) are arranged side by side on the circumferential outer wall of the valve core (421). The three first grooves (424) are respectively the first passage (403), the communication circuit (405), and the second passage (404). When the valve core (421) is located at the second rotation position, the first switching valve (402) is in the second state, and two second grooves (425) arranged in parallel are provided on the circumferential outer wall of the valve core (421). In the vertical direction of the second groove (425), one first groove (424) is provided below the second groove (425). The two second grooves (425) are connected to the pipeline to form the first heat exchange flow path (406), and the first groove (424) is the second passage (404); When the valve core (421) is located at the third rotation position, the first switching valve (402) is in the third state, and two second grooves (425) arranged in parallel are provided on the circumferential outer wall of the valve core (421). In the vertical direction of the second groove (425), a first groove (424) is provided above the second groove (425). The two second grooves (425) are connected to the pipeline to form the second heat exchange flow path (407), and the first groove (424) is the first passage (403).

5. The thermal management system according to claim 1, wherein: The terminal heat exchange assembly comprises three first terminal heat exchange assemblies (4) arranged in series, wherein the first terminal component (401) of the first first terminal heat exchange assembly (4) is a motor electronic control, the first terminal component (401) of the second first terminal heat exchange assembly (4) is a third heat exchanger arranged outside the vehicle, and the first terminal component (401) of the third first terminal heat exchange assembly (4) is a battery.

6. The thermal management system according to claim 1, wherein: The terminal heat exchange component further comprises at least two second terminal heat exchange components (5), wherein the second terminal heat exchange component (5) comprises a second terminal component (501), a second switching valve (502) and a third heat exchange circuit (503), wherein the second switching valve (502) is a three-way valve, wherein the first valve port of the second switching valve (502) is connected to the inlet of the heating flow path (31) or the inlet of the cooling flow path (32), the second valve port of the second switching valve (502) is connected to the inlet of the third heat exchange circuit (503), the third valve port of the second switching valve (502) is connected to the outlet of the heating flow path (31) or the outlet of the cooling flow path (32), and the outlet of the third heat exchange circuit (503) is connected to the outlet of the heating flow path (31) or the outlet of the cooling flow path (32), and a one-way valve (504) is provided at the connection point.

7. The thermal management system according to claim 6, characterized in that: The terminal heat exchange assembly comprises two second terminal heat exchange assemblies (5), the second terminal component (501) of the first second terminal heat exchange assembly (5) is a heating heat exchanger arranged in the vehicle, the first valve port of the first second switching valve (502) is connected to the inlet of the heating flow path (31), the second valve port of the first second switching valve (502) is connected to the inlet of the third heat exchange circuit (503), the third valve port of the first second switching valve (502) is connected to the outlet of the heating flow path (31), the outlet of the third heat exchange circuit (503) is connected to the outlet of the heating flow path (31), and a one-way valve (504) is provided at the connection point; The second end component (501) of the second second end heat exchange component (5) is a refrigeration heat exchanger arranged in the vehicle, the first valve port of the second second switching valve (502) is connected to the inlet of the refrigeration flow path (32), the second valve port of the second second switching valve (502) is connected to the inlet of the third heat exchange circuit (503), the third valve port of the second second switching valve (502) is connected to the outlet of the refrigeration flow path (32), the outlet of the third heat exchange circuit (503) is connected to the outlet of the refrigeration flow path (32), and a one-way valve (504) is provided at the connection point.

8. The thermal management system according to any one of claims 1 to 7, characterized in that: The refrigerant circulation system (1) further comprises a compressor (103), a gas-liquid separator (104), and an expansion valve (105); the first heat exchanger (101) is a plate-type condenser; the second heat exchanger (102) is a plate-type evaporator; the compressor (103), the first heat exchanger (101), the expansion valve (105), the second heat exchanger (102), and the gas-liquid separator (104) are sequentially arranged in series; The first heat exchanger (101) is provided with a first refrigerant channel and a first cooling liquid channel, the heating flow path (31) is provided in series with the first heat exchanger (101), the heating flow path (31) is communicated with the cooling liquid channel, and a first water kettle (311) and a first water pump (312) are provided on the heating flow path (31); The second heat exchanger (102) is provided with a second refrigerant channel and a second cooling liquid channel, the cooling flow path (32) is arranged in series with the second heat exchanger (102), the cooling flow path (32) is communicated with the second cooling liquid channel, and a second water kettle (321) and a second water pump (322) are provided on the cooling flow path (32).

9. The thermal management system according to claim 8, characterized in that: The compressor (103), the gas-liquid separator (104), the expansion valve (105), the first heat exchanger (101), and the second heat exchanger (102) are arranged outside the passenger compartment.

10. A control method, characterized in that: The control method is used to control the thermal management system according to claim 7, when the first switching valve (402) has a first state, a second state, and a third state, the terminal heat exchange component includes three first terminal heat exchange components (4) arranged in series, the first terminal component (401) of the first first terminal heat exchange component (4) is a motor electronic control, the first terminal component (401) of the second first terminal heat exchange component (4) is a third heat exchanger arranged outside the vehicle, and the first terminal component (401) of the third first terminal heat exchange component (4) is a battery, the control method includes: When heating is required in the vehicle, the first switching valve (402) of the first first terminal heat exchange component (4) is in the third state, the first switching valve (402) of the second first terminal heat exchange component (4) is in the first state, the first switching valve (402) of the third first terminal heat exchange component (4) is in the third state, the first valve port of the first second switching valve (502) is connected to the inlet of the heating flow path (31), and the second valve port of the first second switching valve (502) is connected to the inlet of the third heat exchange circuit (503). , the third valve port of the first second switching valve (502) is disconnected from the outlet of the heating flow path (31), and the outlet of the third heat exchange circuit (503) is connected to the outlet of the heating flow path (31); the first valve port of the second second switching valve (502) is connected to the inlet of the cooling flow path (32), the second valve port of the second second switching valve (502) is disconnected from the inlet of the third heat exchange circuit (503), and the third valve port of the second second switching valve (502) is connected to the outlet of the cooling flow path (32); When the vehicle needs to be cooled, the first switching valve (402) of the first first terminal heat exchange component (4) is in the second state, the first switching valve (402) of the second first terminal heat exchange component (4) is in the second state, the first switching valve (402) of the third first terminal heat exchange component (4) is in the third state, the first valve port of the first second switching valve (502) is connected to the inlet of the heating flow path (31), and the second valve port of the first second switching valve (502) is disconnected from the inlet of the third heat exchange circuit (503). , the third valve port of the first second switching valve (502) is connected to the outlet of the heating flow path (31); the first valve port of the second second switching valve (502) is connected to the inlet of the cooling flow path (32), the second valve port of the second second switching valve (502) is connected to the inlet of the third heat exchange circuit (503), the third valve port of the second second switching valve (502) is disconnected from the outlet of the cooling flow path (32), and the outlet of the third heat exchange circuit (503) is connected to the outlet of the cooling flow path (32); When charging below room temperature, the first switching valve (402) of the first first terminal heat exchange component (4) is in the first state, the first switching valve (402) of the second first terminal heat exchange component (4) is in the second state, the first switching valve (402) of the third first terminal heat exchange component (4) is in the second state, the first valve port of the first second switching valve (502) is connected to the inlet of the heating flow path (31), the second valve port of the first second switching valve (502) is disconnected from the inlet of the third heat exchange circuit (503), and the third valve port of the first second switching valve (502) is connected to the outlet of the heating flow path (31); the first valve port of the second second switching valve (502) is connected to the inlet of the cooling flow path (32), the second valve port of the second second switching valve (502) is disconnected from the inlet of the third heat exchange circuit (503), and the third valve port of the second second switching valve (502) is connected to the outlet of the cooling flow path (32).

11. A vehicle comprising a thermal management system, characterized in that: The thermal management system is the thermal management system according to any one of claims 1 to 9.

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