Vehicle heat exchange system, control method and device, and vehicle

Abstract

The present application relates to the technical field of vehicles, in particular to a vehicle heat exchange system, a control method and device and a vehicle, comprising a first heat exchange subsystem, a second heat exchange subsystem and a three-way reversing valve, the first heat exchange subsystem comprising a first circulation loop; the second heat exchange subsystem comprising a second circulation loop; the three-way reversing valve comprising a first interface, a second interface and a third interface, the first interface and the second interface accessing the first circulation loop; a first conduction point being provided on the first circulation loop, a second conduction point and a third conduction point being provided on the second circulation loop, the first conduction point being in conductive connection with the second conduction point, and the third conduction point being in conductive connection with the third interface. Two heat exchange subsystems are connected by the three-way reversing valve, and the two heat exchange subsystems can operate independently or simultaneously, thus simplifying the system structure, reducing the weight, and lowering the cost.

Description

[0001] This application is a divisional application of the patent application filed on March 30, 2020, with application number 202010236499.1 and invention title "A vehicle heat exchange system, control method, device and vehicle". Technical Field

[0002] This invention relates to the field of vehicle technology, and in particular to a vehicle heat exchange system, control method, device, and vehicle. Background Technology

[0003] The thermal management system of an electric vehicle includes a passenger compartment heating subsystem and a battery pack temperature control subsystem. Typically, electric heaters are used to heat the passenger compartment to meet air conditioning comfort requirements, while also providing low-temperature heating to the battery pack to improve range. Air conditioning refrigerant is used to perform phase-change cooling on the battery pack to meet high-temperature temperature control needs.

[0004] The typical solution for these two subsystems is as follows: For passenger compartment heating, an electric heater, a passenger compartment heater core, and a water pump are arranged in series; for battery pack temperature control, an electric heater, a cooler, a water pump, and the battery pack are arranged in series. The two subsystems operate independently to meet different flow rate or water temperature control requirements.

[0005] The above configuration scheme has two subsystems that operate independently, and each subsystem requires an electric heater, resulting in a large vehicle weight, high energy consumption, and high cost. Summary of the Invention

[0006] The technical problem to be solved by this invention is the high energy consumption and cost of existing vehicle thermal management systems.

[0007] To address the aforementioned technical problems, in a first aspect, embodiments of this application disclose a vehicle heat exchange system, comprising: a first heat exchange subsystem, a second heat exchange subsystem, and a three-way reversing valve.

[0008] The first heat exchange subsystem includes a first circulation loop;

[0009] The second heat exchange subsystem includes a second circulation loop;

[0010] The three-way reversing valve includes a first interface, a second interface, and a third interface, with the first interface and the second interface connected to the first circulation loop;

[0011] The first loop is provided with a first conduction point, and the second loop is provided with a second conduction point and a third conduction point. The first conduction point is conductively connected to the second conduction point, and the third conduction point is conductively connected to the third interface.

[0012] The first circulation loop and the second circulation loop are equipped with coolant.

[0013] Furthermore, the first circulation loop includes a first water pump, a heater, and a warm air blower, wherein the first water pump, the heater, the warm air blower, and the three-way proportional reversing valve are connected in series through a first pipeline;

[0014] The second circulation loop includes a second water pump, a cooler, and a temperature control device, which are connected in series via a second pipeline.

[0015] Furthermore, the first water pump, the heater, the warm air blower, the second water pump, and the temperature control device are connected in series through a third pipeline to form a third circulation loop.

[0016] Secondly, embodiments of this application disclose a heat exchange system control method applied to a vehicle heat exchange system, wherein the vehicle heat exchange system includes a first heat exchange subsystem, a second heat exchange subsystem, and a three-way reversing valve, and the method includes:

[0017] Receive a first instruction, which includes system identification information and temperature control information;

[0018] The target heat exchange subsystem whose temperature needs to be regulated is determined based on the system identification information.

[0019] The temperature control mode of the target heat exchange subsystem is determined based on the temperature control information.

[0020] The device that needs to be activated is determined based on the temperature control mode.

[0021] Furthermore, before determining the device to be activated based on the temperature control mode, the method further includes:

[0022] The target loop is determined based on the temperature control mode.

[0023] Furthermore, determining the target loop based on the temperature control mode includes:

[0024] If the temperature control mode is the heating mode of the first heat exchange subsystem, then the target circulation loop is determined to be the first circulation loop.

[0025] Furthermore, determining the target loop based on the temperature control mode further includes:

[0026] If the temperature control mode is the heating mode of the second heat exchange subsystem, then the target circulation loop is determined to be the third circulation loop.

[0027] Furthermore, determining the target loop based on the temperature control mode further includes:

[0028] If the temperature control mode is the cooling mode of the second heat exchange subsystem, then the target circulation loop is determined to be the second circulation loop.

[0029] Thirdly, embodiments of this application disclose a heat exchange system control device, including:

[0030] The receiving module is used to receive a first instruction, which includes system identification information and temperature control information;

[0031] The identification module is used to determine the target heat exchange subsystem whose temperature needs to be regulated based on the system identification information;

[0032] The mode determination module is used to determine the temperature control mode of the target heat exchange subsystem based on the temperature control information.

[0033] The device start / stop module is used to determine which devices need to be started based on the temperature control mode.

[0034] Fourthly, embodiments of this application disclose a vehicle, the vehicle including a vehicle heat exchange system and a heat exchange system control device.

[0035] The vehicle heat exchange system includes: a first heat exchange subsystem, a second heat exchange subsystem, and a three-way reversing valve;

[0036] The first heat exchange subsystem includes a first circulation loop;

[0037] The second heat exchange subsystem includes a second circulation loop;

[0038] The three-way reversing valve includes a first interface, a second interface, and a third interface, with the first interface and the second interface connected to the first circulation loop;

[0039] The first loop is provided with a first conduction point, and the second loop is provided with a second conduction point and a third conduction point. The first conduction point is conductively connected to the second conduction point, and the third conduction point is conductively connected to the third interface.

[0040] Coolant is provided in both the first and second circulation loops;

[0041] The heat exchange system control device includes:

[0042] The receiving module is used to receive a first instruction, which includes system identification information and temperature control information;

[0043] The identification module is used to determine the target heat exchange subsystem whose temperature needs to be regulated based on the system identification information;

[0044] The mode determination module is used to determine the temperature control mode of the target heat exchange subsystem based on the temperature control information.

[0045] The device start / stop module is used to determine which devices need to be started based on the temperature control mode.

[0046] By adopting the above technical solution, the vehicle heat exchange system, control method, device, and vehicle described in the embodiments of this application have the following beneficial effects:

[0047] The vehicle heat exchange system described in this application uses a three-way reversing valve to connect two heat exchange subsystems. The entire heat exchange system is filled with coolant. Utilizing the incompressible property of liquids, the two heat exchange subsystems can operate independently or simultaneously, simplifying the system structure, achieving lightweight design, and reducing costs. Attached Figure Description

[0048] To more clearly illustrate the technical solutions and advantages in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of a vehicle heat exchange system provided in an embodiment of this application;

[0050] Figure 2 This is a flowchart of a heat exchange system control method provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of a heat exchange system control device provided in an embodiment of this application;

[0052] Figure 4 This is a schematic diagram of a vehicle structure provided in an embodiment of this application;

[0053] The following is supplementary explanation of the attached figures:

[0054] 101-First heat exchange subsystem; 102-Second heat exchange subsystem; 103-Three-way reversing valve; 104-Heater; 105-Warm air blower; 106-First water pump; 107-Cooler; 108-Battery pack; 109-Second water pump. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0056] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0057] In electric vehicles, thermal management technology maintains the power battery within a suitable temperature range, preventing significant capacity and lifespan degradation. Applications of thermal management technology include: improving heat pump efficiency, saving energy, and providing a comfortable passenger compartment environment in low-temperature winter conditions; heating the battery during cold starts to avoid significant capacity degradation caused by low-temperature discharge; and cooling the battery during normal driving conditions as its temperature rises excessively, also affecting capacity and lifespan. Furthermore, heating the passenger compartment and battery is also necessary in low-temperature environments.

[0058] like Figure 1 As shown in the figure, this application provides a vehicle heat exchange system, including: a first heat exchange subsystem 101, a second heat exchange subsystem 102, and a three-way reversing valve 103. The first heat exchange subsystem 101 includes a first circulation loop; the second heat exchange subsystem 102 includes a second circulation loop; the three-way reversing valve 103 includes a first interface, a second interface, and a third interface, the first interface and the second interface being connected to the first circulation loop; the first circulation loop is provided with a first conduction point, the second circulation loop is provided with a second conduction point and a third conduction point, the first conduction point and the second conduction point being electrically connected, and the third conduction point being electrically connected to the third interface; coolant is provided in the first circulation loop and the second circulation loop.

[0059] The vehicle heat exchange system described in this application uses a three-way reversing valve 103 to connect two heat exchange subsystems. The entire heat exchange system is filled with coolant. Utilizing the incompressible property of liquids, the two heat exchange subsystems can operate independently or simultaneously, simplifying the system structure, achieving lightweight design, and reducing costs.

[0060] In the embodiments of this application, such as Figure 1 As shown, the connection points on the first heat exchange subsystem 101 and the second heat exchange subsystem 102 are connected by pipelines to form a parallel system. Two ports of the three-way directional valve 103 are connected to the first heat exchange subsystem 101, and the other port is connected to the second heat exchange subsystem 102. The three-way directional valve 103 is equipped with a reversing switch, which can control the three ports of the three-way directional valve 103 to be fully open, fully closed, or any two ports connected. Optionally, the three-way directional valve 103 is a three-way proportional directional valve; alternatively, the three-way directional valve 103 is an electromagnetic three-way directional valve 103, and the controller can directly control the opening degree of each port of the three-way directional valve 103. The entire system's pipeline is filled with coolant. Optionally, the coolant can be water, alcohol, ester, or other liquids with high specific heat, or a mixture of the above heat-conducting liquids.

[0061] like Figure 1 As shown, the first circulation loop includes a first water pump 106, a heater 104, and a warm air blower 105. The first water pump 106, the heater 104, the warm air blower 105, and the three-way proportional reversing valve are connected in series through the first pipeline. The second circulation loop includes a second water pump 109, a cooler 107, and a temperature control device. The second water pump 109, the cooler 107, and the temperature control device are connected in series through the second pipeline.

[0062] In this embodiment, the first heat exchange subsystem 101 is a crew cabin heating subsystem, and the first circulation loop is used to regulate the temperature of the crew cabin. When the first heat exchange subsystem 101 is heating, the first and second ports of the three-way reversing valve 103 are connected, and the third port is closed, so that the entire first circulation loop is open. Then, the first water pump 106, heater 104, and heater 105 are turned on. The first water pump 106 is an electric water pump, which provides power for the circulation of coolant in the first circulation loop; the heater 104 is used to heat the coolant in the circulation loop, and optionally, the heater 104 is an HVH heater 104 (Heatwave Vivarium Heater, HVH) or a PTC heater 104 (Positive Temperature Coefficient, PTC). The heater 105 is used to blow the heat from the circulation system into the crew cabin, and optionally, the heater 105 is a heater core in a heating device. The second heat exchange subsystem 102 is a battery pack 108 temperature control subsystem, and the second circulation loop is used to regulate the temperature of the battery pack 108. When the second heat exchange subsystem 102 cools, the third port of the three-way reversing valve 103 is closed, making the entire second circulation loop open, and then the cooler 107 is turned on. The second water pump 109 is an electronic water pump, used to provide power for the circulation of coolant in the second circulation loop; the cooler 107 is used to cool the coolant in the circulation loop. The temperature control device is the battery pack 108, which has a coolant path inside. The coolant carries away the heat from the battery pack 108, and the cooler 107 continuously cools the coolant, thereby achieving the purpose of cooling the battery pack 108. In the embodiments of this application, the power of the first water pump 106 and the second water pump 109 can be controlled and adjusted using conventional technical means.

[0063] like Figure 1 As shown, the first water pump 106, heater 104, warm air blower 105, second water pump 109 and the temperature control device are connected in series through the third pipeline to form a third circulation loop.

[0064] In this embodiment, the first and second connection points are connected by a pipeline, and the third connection point is connected to the third port of the three-way reversing valve 103 by a pipeline. The first water pump 106, heater 104, fan heater 105, three-way reversing valve 103, second water pump 109, and the temperature control device are connected to form a third circulation loop. When the first heat exchange subsystem 101 and the second heat exchange subsystem 102 are heating simultaneously, the first and third ports of the three-way reversing valve 103 are connected, and the first water pump 106, electric heater 104, fan heater 105, and second water pump 109 are turned on simultaneously. After the heater 104 heats the coolant in the circulation loop, due to the incompressible nature of the liquid, the coolant flows along the third circulation loop under the power of the first water pump 106 and the second water pump 109, thereby carrying heat to each device that needs heating. In some embodiments, the first, second, and third ports of the three-way reversing valve 103 are simultaneously open and connected. By adjusting the power of the first water pump 106 and the second water pump 109, coolant flows through the first, second, and third circulation loops. In this embodiment, the flow rate of coolant through each circulation loop can be adjusted by controlling the power of the water pumps and the opening degree of the three ports of the three-way reversing valve 103, thereby achieving heat distribution and temperature control.

[0065] The vehicle heat exchange system described in this application fully utilizes the inherent properties of liquids, simplifies system layout, and achieves overall vehicle weight reduction. A three-way proportional valve is used to regulate two subsystems, further improving HVH (heat, water, and dust) utilization efficiency, reducing overall vehicle energy consumption, and increasing vehicle range. Lower-cost components are used, reducing costs and improving system durability and reliability.

[0066] Based on the above-described heat exchange system, this application also provides a heat exchange system control method. Figure 2 This application provides a flowchart of a heat exchange system control method according to an embodiment. This specification provides the operational steps of the method as described in the embodiments or the flowchart, but based on conventional or non-inventive labor, more or fewer operational steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many steps and does not represent the only execution order. In actual system or client product execution, the method can be executed sequentially according to the embodiments or accompanying drawings, or in parallel, for example, in an environment with parallel processors or multi-threaded processing. The heat exchange system control method disclosed in this application is applied to a vehicle heat exchange system, which includes a first heat exchange subsystem 101, a second heat exchange subsystem 102, and a three-way reversing valve 103. The method includes:

[0067] S201: Receive the first instruction, which includes system identification information and temperature control information.

[0068] In this embodiment, when the vehicle requires heating of the passenger compartment or adjustment of the ambient temperature of the battery pack 108, the user adjusts the heat exchange system through the controller. Upon receiving an instruction to adjust the heat exchange system, the system identification information and temperature control information contained in the instruction are identified. The system identification information includes the identifier of the heat exchange subsystem to be adjusted, and the temperature control information includes the temperature adjustment direction of the heat exchange subsystem to be adjusted, such as heating or cooling, and the temperature control range.

[0069] S203: Determine the target heat exchange subsystem whose temperature needs to be regulated based on the system identification information.

[0070] In this embodiment of the application, the target heat exchange subsystem whose temperature needs to be regulated is determined based on the system identification information as the first heat exchange system, the second heat exchange system, or both the first heat exchange system and the second heat exchange system that need to be regulated simultaneously.

[0071] S205: Determine the temperature control mode of the target heat exchange subsystem based on the temperature control information.

[0072] In this embodiment, the temperature control modes include heating modes of the first heat exchange subsystem 101, heating modes of the second heat exchange subsystem 102, cooling modes of the second heat exchange subsystem 102, simultaneous heating modes of the first heat exchange subsystem 101 and the second heat exchange subsystem 102, and heating modes of the first heat exchange subsystem 101 and cooling modes of the second heat exchange subsystem 102. After determining the temperature control mode of the target heat exchange subsystem, the target circulation loop can be determined based on the temperature control mode.

[0073] The target circulation loop is determined based on the temperature control mode, including the following: If the temperature control mode is the heating mode of the first heat exchange subsystem 101, then the target circulation loop is determined to be the first circulation loop. If the temperature control mode is the cooling mode of the second heat exchange subsystem 102, then the target circulation loop is determined to be the second circulation loop. If the temperature control mode is the heating mode of the second heat exchange subsystem 102, then the target circulation loop is determined to be the third circulation loop.

[0074] S107: Determine the device to be started based on the temperature control mode.

[0075] In this embodiment, the first circulation loop is the passenger compartment heating circulation loop, the second circulation loop is the battery pack 108 cooling circulation loop, and the third circulation loop is the battery pack 108 heating circulation loop. When the passenger compartment is heated alone, the third port of the three-way reversing valve 103 is closed, and the first and second ports are connected. The first water pump 106, heater 104, and heater fan 105 are turned on, and the coolant circulates in the first circulation loop. The heater fan 105 carries the heat from the circulation loop into the passenger compartment. When the battery pack 108 is cooled alone, the third port of the three-way reversing valve 103 is closed, and the second water pump 109 and cooler 107 are turned on. The second port can be closed or connected to the first port. Due to the incompressible nature of liquids, the coolant in the system flows under the power of the second water pump 109. The coolant circulates in the second circulation loop, carrying away the heat from the battery pack 108, thereby cooling the battery pack 108, meeting the rapid heating requirements of the battery pack 108, improving battery performance, and increasing range. When the battery pack 108 is heated alone, the second port of the three-way reversing valve 103 is closed, while the first and third ports are connected. The second water pump 109 and heater 104 are then turned on. The first water pump 106 can be turned on or off. The coolant flows in the third circulation loop, transferring heat to the battery pack 108. When the crew compartment and the battery pack 108 are heated simultaneously, the first, second, and third ports of the three-way reversing valve 103 are connected. The first water pump 106, electric heater 104, heater 105, and second water pump 109 are simultaneously turned on. After the heater 104 heats the coolant in the circulation loop, due to the incompressible nature of liquids, the coolant flows along the third circulation loop under the power of the first and second water pumps 106 and 109, thus transferring heat to the various devices requiring heating. By controlling the power of the water pumps and the opening of the three ports of the three-way reversing valve 103, the flow rate of coolant in each circulation pipe is adjusted, thereby achieving heat distribution and temperature control. When the passenger compartment is heated and the battery pack 108 is cooled, the third port of the three-way reversing valve 103 is closed, and the first and second ports are connected. The first water pump 106, heater 104, fan heater 105, cooler 107, and second water pump 109 are then turned on. The operating power of the first water pump 106 and the second water pump 109 is adjusted to be equal. The passenger compartment heating circulation loop is the first circulation loop, and the battery pack 108 cooling circulation loop is the second circulation loop. Due to the principle of liquid incompressibility, no liquid flows out of the passenger compartment heating circulation loop, and therefore no liquid flows in. The coolant in the two circulation loops is carried away by their respective circulation pressures at the interface, thus forming an "invisible liquid separation surface" at the connection point of the first and second circulation loops. This ensures that the two circulation loops operate independently, achieving system integration. Of the above equipment, the fan heater 105 is only turned on when the passenger compartment needs heating, and the cooler 107 is only turned on when the battery pack 108 is cooled.

[0076] This application also provides a heat exchange system control device. Figure 3 This is a schematic diagram of a heat exchange system control device provided in this embodiment, as shown below. Figure 3 As shown, the control device for the heat exchange system includes:

[0077] The receiving module 301 is used to receive a first instruction, which includes system identification information and temperature control information;

[0078] The identification module 303 is used to determine the target heat exchange subsystem whose temperature needs to be regulated based on the system identification information;

[0079] The mode determination module 305 is used to determine the temperature control mode of the target heat exchange subsystem based on the temperature control information.

[0080] Device start / stop module 307 is used to determine which device needs to be started based on the temperature control mode.

[0081] This application also provides a vehicle. Figure 4 This is a schematic diagram of a vehicle structure provided in this embodiment, such as... Figure 4 As shown, the vehicle includes a vehicle heat exchange system 401 and a heat exchange system control device 403.

[0082] The vehicle heat exchange system 401 includes:

[0083] First heat exchange subsystem 101, second heat exchange subsystem 102 and three-way reversing valve 103;

[0084] The first heat exchange subsystem 101 includes a first circulation loop;

[0085] The second heat exchange subsystem 102 includes a second circulation loop;

[0086] The three-way reversing valve 103 includes a first port, a second port and a third port, with the first port and the second port connected to the first circulation loop.

[0087] The first loop has a first conducting point, the second loop has a second conducting point and a third conducting point, the first conducting point is connected to the second conducting point, and the third conducting point is connected to the third interface.

[0088] Coolant is provided in both the first and second circulation loops;

[0089] The heat exchange system control device 403 includes:

[0090] The receiving module 301 is used to receive a first instruction, which includes system identification information and temperature control information;

[0091] The identification module 303 is used to determine the target heat exchange subsystem whose temperature needs to be regulated based on the system identification information;

[0092] The mode determination module 305 is used to determine the temperature control mode of the target heat exchange subsystem based on the temperature control information.

[0093] Device start / stop module 307 is used to determine which device needs to be started based on the temperature control mode.

[0094] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0095] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0096] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0097] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle heat exchange system, characterized in that, include: The system consists of a first heat exchange subsystem (101), a second heat exchange subsystem (102), and a three-way reversing valve (103). The first heat exchange subsystem (101) includes a first circulation loop; The second heat exchange subsystem (102) includes a second circulation loop; The three-way reversing valve (103) includes a first port, a second port and a third port. The first port and the second port are connected to the first circulation loop, and the opening degree of the second port and the third port is adjustable. The first loop is provided with a first conduction point, and the second loop is provided with a second conduction point and a third conduction point. The first conduction point is conductively connected to the second conduction point, and the third conduction point is conductively connected to the third interface. The second circulation loop includes a cooler (107) and a temperature control device. The branch where the cooler (107) is located and the branch where the temperature control device is located are connected in parallel between the second connection point and the third connection point. Coolant is provided in both the first and second circulation loops; The second circulation loop also includes a second water pump (109), and the first circulation loop includes a first water pump (106), a heater (104) and a warm air blower (105). The first water pump (106), the heater (104), the warm air blower (105), the second water pump (109) and the temperature control device are connected in series through a third pipeline to form a third circulation loop. When the crew cabin is heated separately, the third interface is closed, the first interface and the second interface are connected, and the first water pump (106), the heater (104) and the warm air blower (105) are turned on, and the coolant circulates in the first circulation loop; When the temperature control device is cooled alone, the third interface is closed, and the second water pump (109) and the cooler (107) are turned on. The coolant circulates in the second circulation loop under the power of the second water pump (109). When the temperature control device is used for heating alone, the second interface is closed, the first interface and the third interface are connected, and the first water pump (106), the second water pump (109) and the heater (104) are turned on, and the coolant flows in the third circulation loop; When the passenger compartment and the temperature control device are heated simultaneously, the first interface, the second interface and the third interface are connected, and the first water pump (106), the heater (104), the heater (105) and the second water pump (109) are turned on at the same time. The coolant flows along the third circulation loop under the power of the first water pump (106) and the second water pump (109) to bring heat to the heater (105) and the temperature control device.

2. The vehicle heat exchange system according to claim 1, characterized in that, The second water pump (109) and the temperature control device are connected in series between the second connection point and the third connection point.

3. The vehicle heat exchange system according to claim 1, characterized in that, The first water pump (106), the heater (104) and the warm air blower (105) are connected in series between the first conductive point and the first interface.

4. The vehicle heat exchange system according to any one of claims 1 to 3, characterized in that, The first circulation loop is the crew cabin heating circulation loop; the second circulation loop is the battery pack cooling circulation loop.

5. A vehicle heat exchange system, characterized in that, include: The first circulation loop, the second circulation loop, and the three-way directional valve (103). The three-way reversing valve (103) includes a first port, a second port and a third port. The first port and the second port are connected to the first circulation loop, and the opening degree of the second port and the third port is adjustable. The first loop is provided with a first conduction point, and the second loop is provided with a second conduction point and a third conduction point. The first conduction point is conductively connected to the second conduction point, and the third conduction point is conductively connected to the third interface. The first circulation loop includes a heater (104), and the second circulation loop includes a cooler (107) and a temperature control device. The branch where the cooler (107) is located and the branch where the temperature control device is located are connected in parallel between the second connection point and the third connection point. When the second interface is closed and the first interface and the third interface are open, the heater (104), the first interface, the third interface, and the temperature control device are connected in series to form a third circulation loop; When the crew cabin is heated separately, the third interface is closed, the first interface and the second interface are connected, and the first water pump (106), the heater (104) and the warm air blower (105) are turned on, and the coolant circulates in the first circulation loop; When the temperature control device is cooled alone, the third interface is closed, the second water pump (109) and the cooler (107) are turned on, and the coolant circulates in the second circulation loop under the power of the second water pump (109). When the temperature control device is used for heating alone, the second interface is closed, the first interface and the third interface are connected, and the first water pump (106), the second water pump (109) and the heater (104) are turned on, and the coolant flows in the third circulation loop; When the passenger compartment and the temperature control device are heated simultaneously, the first interface, the second interface and the third interface are connected, and the first water pump (106), the heater (104), the heater (105) and the second water pump (109) are turned on at the same time. The coolant flows along the third circulation loop under the power of the first water pump (106) and the second water pump (109) to bring heat to the heater (105) and the temperature control device.

6. The vehicle heat exchange system according to claim 5, characterized in that, When the third interface is closed and the first and second interfaces are open, the first and second loops operate independently.

7. The vehicle heat exchange system according to claim 5 or 6, characterized in that, The first circulation loop also includes a heater (105), and the first circulation loop is a heating circulation loop for the crew cabin; the second circulation loop is a cooling circulation loop for the battery pack.

8. A vehicle, characterized in that, The vehicle includes the vehicle heat exchange system as described in any one of claims 1 to 7.

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