Electric vehicle and its thermal management device

Abstract

The present application provides an electric vehicle and a thermal management device thereof, the thermal management device comprising a case, a plurality of groups of heat transfer tubes housed in the case, each group of heat transfer tubes being used for connecting with a device, a valve assembly being provided on a front surface of the case, the valve assembly being provided with a plurality of valve ports, each valve port being connected to a second end of at least one heat transfer branch tube so as to face each other front to back, each of the two heat transfer branches of the same group being connected to a different valve port, the valve assembly being used for selectively connecting different valve ports when the heat management device switches modes, thereby realizing the connection and disconnection of a heat transfer circuit in which different devices are arranged. The electric vehicle includes a motor, a battery, a radiator, and the above-mentioned thermal management device. The electric vehicle and the thermal management device provided by the present application have the advantages of improving the assembly efficiency of the thermal management part of the electric vehicle and reducing the space occupied by the thermal management part in the electric vehicle.

Description

[Technical Field]

[0001] This application relates to the field of thermal management technology, and more particularly to electric vehicles and their thermal managers. [Background technology]

[0002] Because electric vehicles use batteries as a power source, they have the advantages of being energy-efficient and environmentally friendly. Currently, electric vehicles are becoming more common on the market, and in practical use, thermal management systems for electric vehicles typically need to thermally manage the thermally managed objects, such as the battery pack and drivetrain, of the electric vehicle, and maintain the temperatures of these managed objects within an operating temperature range where they can operate normally.

[0003] In the related art, a thermal management system includes a battery circulation line used to raise or lower the temperature of a battery pack and a power circulation line used to lower the temperature of a drive group. A heat transfer medium such as water or antifreeze circulates through the battery circulation line and the power circulation line.

[0004] However, the two circulation lines are independent of each other, and each line is equipped with its own devices, such as valves, water pumps, and expansion tanks, making it difficult to assemble the thermal management system because workers must assemble each circulation line and the devices on each circulation line separately. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION Embodiments of the present application provide an electric vehicle and its thermal manager that solves the problem of difficult assembly of related art thermal management systems. [Means for solving the problem]

[0006] To achieve the above objectives, the present application provides the following technical solutions:

[0007] One aspect of an embodiment of the present application provides a thermal management device for an electric vehicle including a case, wherein the case accommodates a plurality of groups of heat transfer tubes, each of the heat transfer tubes in each group having two heat transfer branches, a first heat transfer branch of the group having a first end that penetrates the case and is used to connect a water supply end of a device, and a second heat transfer branch of the group having a first end that penetrates the case and is used to connect a water discharge end of the same device, a valve assembly is provided on a front surface of the case, and the valve assembly has a plurality of valve ports, each of which is connected to a second end of at least one of the heat transfer branches in opposing front-to-rear directions, and each of the two heat transfer branches of the same group is connected to a different valve port, and the valve assembly is used to selectively connect different valve ports when the thermal management device switches modes, thereby connecting and disconnecting heat transfer circuits in which different devices are arranged.

[0008] Another aspect of the present invention provides an electric vehicle including a motor, a battery, a radiator, and the thermal management device according to any one of the above claims. [Effects of the Invention]

[0009] The electric vehicle and thermal management device provided by the present application include a case, a plurality of groups of heat transfer tubes arranged in the case, a valve assembly arranged on the front surface of the case, first ends of two heat transfer branch tubes of each group penetrating the case and connected to a water supply end and a water discharge end of the same device, and each of the valve ports of the valve assembly communicates with a second end of at least one heat transfer branch tube so as to face each other, and each of the two heat transfer branch tubes of each group communicates with a different valve port, so that when the thermal management device switches modes, the valve assembly communicates with different valve ports to communicate with different devices arranged therein. heat transferIn this way, by integrating the valve assembly and the heat transfer tube group into the case, it is possible to avoid the need to separately install each pipe and valve, which is advantageous for improving the assembly efficiency of the thermal management part of the electric vehicle and for reducing the space occupied by the thermal management part inside the electric vehicle.

[0010] In addition to the technical problems solved by the embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects achieved by the technical features of these technical solutions described above, other technical problems that can be solved by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects achieved by these technical features will be described in more detail in the detailed description of the invention. [Brief explanation of the drawings]

[0011] The drawings herein, which are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. [Figure 1] 1 is a principle diagram of a heat management device provided by an embodiment of the present application; [Figure 2] FIG. 2 is a front view of a thermal manager provided in accordance with an embodiment of the present application. [Figure 3] FIG. 3 is a perspective view of the heat manager shown in FIG. 2. [Figure 4] 3 is a front view of the heat manager shown in FIG. 2 with the first substrate removed. [Figure 5] 3 is a schematic diagram of a first base body of the heat management unit shown in FIG. 2 and a group of heat transfer tubes provided on the first base body. [Figure 6] 3 is a schematic view of a second base body of the heat management unit shown in FIG. 2 and a group of heat transfer tubes provided on the second base body. FIG. [Figure 7] FIG. 3 is a top view of the thermal manager shown in FIG. 2. [Figure 8] FIG. 8 is a cross-sectional view taken along line AA in FIG. [Figure 9] FIG. 8 is a cross-sectional view taken along line BB in FIG. [Figure 10]FIG. 8 is a cross-sectional view taken along line CC in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] The figures above are used to illustrate specific embodiments of the present application, and a more detailed description will be provided below. These figures and written description are not intended to limit the scope of the concepts of the present application in any way, but rather to explain the concepts of the present application to those skilled in the art by reference to specific embodiments.

[0013] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions will be described clearly and completely below with reference to the drawings of the embodiments of the present application, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments, and all other embodiments obtained by those skilled in the art without creative work based on the embodiments of the present application fall within the scope of protection of the present application.

[0014] Fig. 1 is a principle diagram of a heat management device provided by an embodiment of the present application. The heat management device provided by an embodiment of the present application is the part surrounded by the two-dot chain line in Fig. 1. Referring to Fig. 1, the heat management device may include an air conditioning unit and a heat transfer unit.

[0015] The air conditioning section is composed of air conditioning piping and air conditioning pipes The air conditioning unit may be provided with a device installed in the air conditioning duct. The hollow arrows in FIG. 1 indicate the flow direction of a refrigerant such as chlorofluorocarbon in the air conditioning duct. The air conditioning unit may be in communication with a compressor 82, an internal condenser 84, and an internal evaporator 83. By selectively opening and closing a stop valve 85 and an expansion valve 86 in the air conditioning duct, different air conditioning circulation circuits are formed to achieve cooling and heating of the passenger compartment.

[0016] Specifically, the passenger compartment refers to a space for carrying the driver and passengers of the electric vehicle. The internal condenser 84 and the internal evaporator 83 can exchange heat with the passenger compartment to adjust the temperature of the passenger compartment. Devices provided in the air conditioning duct include a stop valve 85, an expansion valve 86, a water-cooled condenser 51, a battery cooler 52, a coaxial pipe 54, and a gas-liquid separator 53. The connection means between these devices can be seen in FIG. 1. Referring to FIG. 2, a third mounting point 531 for mounting the gas-liquid separator 53 can be provided on the front surface of the second base 12 (described later). The gas-liquid separator 53 can be provided on the left side of the water-cooled condenser 51 so as to communicate with the first duct of the water-cooled condenser 51. When the passenger compartment is in a cooling mode, the compressor 82, the internal evaporator 83, and the water-cooled condenser 51 can be connected by the air conditioning duct. When the passenger compartment is in heating mode, the compressor 82, the internal condenser 84, and the battery cooler 52 may be in communication with an air conditioning line.

[0017] The heat management device may also include a heat transfer section in a heat transfer conduit and devices installed in the heat transfer conduit. The solid arrows in FIG. 1 indicate the flow direction of a heat transfer medium such as water, coolant, or antifreeze in the heat transfer conduit. The heat transfer section communicates with devices such as a motor 91, a battery 92, and a radiator 81 to form different heat transfer circulation circuits and further realize thermal management for the devices such as the motor 91 and the battery 92. Devices installed in the heat transfer conduit include a water-cooled condenser 51, a battery cooler 52, and a valve assembly.

[0018] The water-cooled condenser 51 includes a first pipe communicating with the air conditioning pipe and a second pipe communicating with the heat transfer pipe. The refrigerant in the first pipe can exchange heat with the heat transfer medium in the second pipe. When the passenger compartment is in the cooling mode, the heat in the first pipe can be released to the heat transfer circulation circuit via the second pipe. That is, when the passenger compartment is in the cooling mode, the second pipe absorbs the heat from the first pipe. Here, the heat in the second pipe can be dissipated by a radiator 81 communicating with the heat transfer portion. When the air conditioning pipe in which the first pipe is located is blocked, heat is no longer released from the first pipe to the second pipe.

[0019] Similarly, the battery cooler 52 may include a first pipe and a second pipe. The first pipe communicates with the air conditioning pipe, and the second pipe communicates with the heat transfer pipe. The refrigerant in the first pipe can exchange heat with the heat transfer medium in the second pipe. When the passenger compartment is in a heating mode, the first pipe can absorb heat in the second pipe. In this case, if the battery 92 is relatively hot, the heat on the battery 92 can be dissipated to the air conditioning circuit via the heat transfer circuit. In addition, when the air conditioning pipe in which the first pipe is located is blocked, the first pipe no longer absorbs heat from the second pipe. In this case, the heat of the battery 92 can be dissipated to the radiator 81 via the heat transfer circuit.

[0020] Furthermore, whether the passenger compartment is cooled or heated, i.e., the temperature of the passenger compartment, is controlled by the passengers in the passenger compartment. For example, the temperature of devices such as the battery 92 and the motor 91 is controlled automatically by the electrical control unit according to the device temperature. Taking the temperature of the battery 92 as an example, a temperature detector can monitor the temperature of the battery 92 in real time. When the actual temperature of the battery 92 detected by the temperature detector is higher than a predetermined value, the heat transfer circuit including the battery 92 and the radiator 81 can be turned on. Alternatively, when the passenger compartment is in heating mode, the heat transfer circuit including the battery 92 and the battery cooler 52 can be turned on. Either of the above two methods can be used to lower the temperature of the battery 92 so that the actual temperature of the battery 92 is lower than the predetermined value.

[0021] The electrical control unit may include a temperature detector such as a temperature sensor and a control unit for the valve assembly. The thermal management device according to the embodiment of the present application may or may not include an electrical control unit.

[0022] In addition, a battery conduit may be provided outside the battery 92 to exchange heat with the battery 92 and regulate and control the temperature of the battery 92. The radiator 81 includes a heat dissipation conduit, which can dissipate heat by air cooling. The battery conduit communicates with the heat transfer conduit of the heat transfer unit of the thermal management device provided in the embodiment of the present application, and the heat dissipation conduit also communicates with the heat transfer conduit. The above-mentioned "turning on the heat transfer circulation circuit in which the battery 92 and the radiator 81 are disposed" actually refers to connecting the conduit of the motor 91 with the heat dissipation conduit through the heat transfer conduit to form a heat dissipation circulation circuit for the battery 92. Similarly, the motor 91 / controller 95, which communicates with the heat transfer conduit described below, actually refers to the motor 91 conduit / controller 95 conduit provided outside the motor 91 / controller 95 conduit provided outside the motor 91.

[0023] In order to make it easier for workers to assemble the thermal management device into the electric vehicle, the heat transfer pipes and devices related to the thermal management device should be integrated into the case 1 as much as possible, and the arrangement method of the heat transfer pipes and devices in the case 1 can be designed according to the principles of having a small number of heat transfer pipes, a short heat transfer path for the heat transfer pipes, easy assembly, and a small space occupied by the thermal management device.

[0024] Referring to FIG. 1, it can be seen that the heat transfer piping provided in the case 1 not only needs to communicate with devices integrated in the case 1, such as the water-cooled condenser 51, the battery cooler 52, and the valve assembly, but also needs to communicate with devices not integrated in the case 1, such as the motor 91, the battery 92, and the radiator 81.

[0025] In order to shorten the flow path between the heat transfer pipes and the devices integrated in the case 1, the heat transfer pipes and the water-cooled condenser 51, the heat transfer pipes and the battery cooler 52, and the heat transfer pipes and the valve assembly can all be connected in opposing front-to-back directions.

[0026] FIG. 2 is a front view of a thermal manager provided in accordance with an embodiment of the present application, and FIG. 22 and 3, the case 1 can include a first substrate 11 and a second substrate 12. FIG. 2 2 to 4, the heat transfer conduits can be attached to the inside of the case 1 formed with the first base 11 and the second base 12 facing each other from the front to the rear. A water-cooled condenser 51, a battery cooler 52, a valve assembly, etc. can be attached to the front or rear surface of the case 1. When arranging the devices integrated on the surface of the case 1, the position of the valve assembly can be determined first, and then the other devices can be arranged around the valve assembly.

[0027] In this specification, when the direction indicated by arrow X in the drawings is the front side of the heat management device, the opposite direction is the rear side of the heat management device; when the direction indicated by arrow Y is the left side of the heat management device, the opposite direction is the right side of the heat management device; and when the direction indicated by arrow Z is the top side of the heat management device, the opposite direction is the bottom side of the heat management device.

[0028] For example, the first base 11 has a front wall and a side wall, and the side wall of the first base 11 is connected to the outer periphery of the front wall of the first base 11 and extends toward the rear side. The second base 12 has a rear wall and a side wall, and the side wall of the second base 12 is connected to the outer periphery of the rear wall of the second base 12 and extends toward the front side. The side wall of the first base 11 is connected to the side wall of the second base 12 so as to face each other in the front and rear direction, so as to form a space for accommodating the heat transfer pipes.

[0029] When the thermal management device is connected to devices such as the motor 91 and the battery 92, the heat transfer pipes between the motor 91 and the radiator 81 and between the battery 92 and the radiator 81 can also be integrated into the case 1 to facilitate assembly. In other words, when the thermal management device is installed in an electric vehicle, it is sufficient to connect the thermal management device to the battery 92 and the thermal management device to the motor 91. By adding and arranging pipes outside the thermal management device, it is not necessary to connect the motor 91 and the battery 92.

[0030] 1, the heat transfer pipe line includes multiple groups of heat transfer tubes, each of which includes two heat transfer branches. The first heat transfer branch of the group has a first end that passes through the case 1 and is used to connect the water supply ends of the devices. The second heat transfer branch of the group has a first end that passes through the case 1 and is used to connect the water discharge ends of the same devices.

[0031] The valve assembly has a plurality of valve ports, each of which is connected to the second end of at least one heat transfer branch pipe in a front-to-rear direction, and two heat transfer branches in the same group are connected to different valve ports, respectively. The valve assembly is used to selectively connect and disconnect different valve ports when the thermal manager switches modes, thereby connecting and disconnecting heat transfer circuits in which different devices are arranged.

[0032] Specifically, the first valve port of the valve assembly can communicate with the water inlet end of the first device via a heat transfer branch pipe, and the second valve port can communicate with the water outlet end of the first device via a heat transfer branch pipe. Thus, by simply controlling the connection and disconnection between the first and second valve ports using the valve assembly, the connection and disconnection of the heat transfer circuit in which the first device is located can be controlled. The third valve port of the valve assembly can communicate with the water inlet end of the second device via a heat transfer branch pipe, and the fourth valve port can communicate with the water outlet end of the second device via a heat transfer branch pipe. When communication between the first and second devices is required, the second valve port can communicate with the third valve port, and the fourth valve port can communicate with the first valve port.

[0033] The aforementioned "communicating in a front-to-rear opposing manner" can be explained with reference to FIGS. 2 and 4. Note that the valve assemblies are not shown in FIGS. 2 and 4. For ease of understanding, square frames are drawn at all points connecting each heat transfer conduit to a valve port of the valve assembly, and the corresponding valve port numbers are numbered within the square frames. In FIG. 2, the valve assembly can be attached to the front surface of the first base 11 by a first valve assembly attachment point 26 and a second valve assembly attachment point 34. The valve assembly can be provided with multiple valve ports. The heat transfer branch passages are provided within an accommodating space enclosed by the first base 11 and the second base 12. That is, the valve assembly is provided in front of the heat transfer branch passages. Each heat transfer branch passage can be provided with an opening facing one of the valve ports. "Facing" refers to the fact that the projection of the valve port on the front surface of the first base 11 overlaps with the projection of the opening on the front surface of the first base 11. A communication pipe may be provided between the corresponding valve port and the opening, penetrating the first base 11 and communicating between the corresponding valve port and the opening. By providing communication in an opposing front-to-rear direction, the flow path between the valve port of the valve assembly and the heat transfer branch pipe can be shortened.

[0034] 5 is a schematic diagram of the first substrate 11 of the heat management device shown in FIG. 2 and a group of heat transfer tubes provided on the first substrate 11, FIG. 6 is a schematic diagram of the second substrate 12 of the heat management device shown in FIG. 2 and a group of heat transfer tubes provided on the second substrate 12, FIG. 7 is a top view of the heat management device shown in FIG. 2, FIG. 8 is a cross-sectional view at AA in FIG. 7, and FIG. 9 is a cross-sectional view at BB in FIG. 7.

[0035] Referring to Figures 1 and 4 to 9, the valve assembly can have a first side and a second side. The first side can have a first motor valve port 21 and a second motor valve port 21'. The second side can have a first battery valve port 22 and a second battery valve port 22'. Note that the valve assembly is not shown in Figures 5 and 6. For easy understanding, square frames are drawn at all points connecting each heat transfer pipe to a valve port of the valve assembly, and the corresponding valve port numbers are written inside the square frames. The square frames in Figures 8 and 9 represent the valve ports of the valve assembly, and the numbers inside the square frames are the valve port numbers.

[0036] 1 and 4 to 9, the plurality of heat transfer tube groups may include motor groups and battery packs, and the battery packs may be provided on the same layer as the motor groups. The motor groups may include a first motor branch 411 and a second motor branch 412. The first motor branch 411 is used to connect the first motor valve port 21 to the drain end of the motor 91, and the second motor branch 412 is used to connect the second motor valve port 21' to the water supply end of the motor 91.

[0037] The battery pack includes a first battery branch 421 and a second battery branch 422, the first battery branch 421 is used to connect the first battery valve port 22' to the drain end of the battery 92, and the second battery branch 422 is used to connect the second battery valve port 22' to the drain end of the battery 92. Battery 92 It is used to communicate with the water supply end of the

[0038] Specifically, the motor group and the battery pack are housed in the case 1, and the front surfaces of the motor group and the battery pack are fixed to the front wall of the first base 11, and the rear surfaces of the motor group and the battery pack are in the same vertical plane. That is, the motor group and the battery pack have the same thickness in the front-to-rear direction.

[0039] When the motor group is connected to the corresponding valve ports, and when the battery pack is connected to the corresponding valve ports, a form of communication in which the motor group and the battery pack are connected to the corresponding valve ports is adopted.

[0040] Since the motors 91 and the batteries 92 are arranged in different directions of the electric vehicle, the valve ports of the two motors 91 can be arranged on a first side and the valve ports of the two batteries 92 can be arranged on a second side to avoid crossing the pipelines.

[0041] Furthermore, by connecting the first motor valve port 21 and the second motor valve port 21', and by connecting the first motor branch pipe 411 and the second motor branch pipe 412, the heat transfer pipe in which the motor 91 is disposed can be electrically connected. By connecting the first battery valve port 22 and the second battery valve port 22', and by connecting the first battery branch pipe 421 and the second battery branch pipe 422, the heat transfer pipe in which the battery 92 is disposed can be electrically connected. By connecting the second battery valve port 22' and the first motor valve port 21, and by connecting the first battery valve port 22 and the second motor valve port 21', the heat transfer pipe in which the battery 92 is disposed and the heat transfer pipe in which the motor 91 is disposed are connected in series.

[0042] Optionally, a motor coupling shown in Fig. 3 may be provided through the case 1 to extend two motor branches from the case 1 and communicate with the motor 91. For example, referring to Figs. 3 and 4, one end of the first motor branch 411 remote from the first motor valve port 21 may be communicated with the motor outlet coupling 413, and one end of the second motor branch 412 remote from the second motor valve port 21' may be communicated with the motor inlet coupling 414. Because the motor 91 is disposed at the front end of the electric vehicle, the motor inlet coupling 414 and the motor outlet coupling 413 may be extended forward.

[0043] Similarly, a battery outlet joint 424 and a battery inlet joint 423 shown in FIG. 3 can be provided penetrating the case 1 to allow the first battery branch 421 and the second battery branch 422 inside the case 1 to be drawn out of the case 1 and communicate with the battery 92. (Located above the battery water pump mounting base) 4, 5, and 8, the first motor valve port 21 and the second motor valve port 21' can be arranged one above the other. On the first side, the first heat dissipation valve port 23 and the second heat dissipation valve port 24' can be arranged one above the other. 23 Two heat dissipation valve ports can be arranged between the valve ports of the two motors 91.

[0044] Alternatively, as shown in Figures 2 to 5, the motor water pump 61 can also be integrated into the case 1. Since the motor water pump 61 is usually large in volume, the motor water pump 61 is provided on the surface of the case 1. The motor water pump 61 and the heat transfer pipes inside the case 1 may be connected to each other so that they face each other from the front to the rear. Specifically, a motor water pump mounting seat is provided on the front surface of the first base 11. 611 The motor water pump mounting seat is provided. 611 A water inlet may be provided on the rear surface of the valve assembly 11, and the water pump supply pipe 64 shown in Figures 4 and 5 may be connected to the water inlet. The water pump supply pipe 64 may be provided to pass through the first base 11 and communicate with the second motor branch pipe 412. In addition, to shorten the heat transfer path between the second motor branch pipe 412 and the motor water pump 61, the motor water pump 61 may be disposed on the first side of the valve assembly. Similarly, a battery water pump 62 may be provided on the second side of the valve assembly. The battery water pump 62 may also be connected to the second battery branch pipe 422 so that they are opposed to each other in the front and rear.

[0045] 1 and 4 to 8, the plurality of groups of heat transfer pipes may further include a heat dissipation group, which may be provided in the same layer as the motor group. Two heat dissipation branches may be disposed between the two motor branches. The heat dissipation group may include a first heat dissipation branch 431 and a second heat dissipation branch 432. The first heat dissipation branch 431 connects the first heat dissipation valve port 23 to the water supply end of the radiator 81, and the second heat dissipation branch 432 connects the second heat dissipation valve port 23 to the water supply end of the radiator 81. 23 ' can be connected to the drain end of the radiator 81.

[0046] Specifically, the heat dissipation branch pipe and the heat dissipation valve port of the valve assembly can be connected by arranging them in a front-to-rear direction. Furthermore, since the motor 91 primarily dissipates heat through the radiator 81 and the motor 91 is located at the front end of the electric vehicle together with the radiator 81, the valve port of the motor 91 and the valve port of the radiator 81 can be located on the first side of the valve assembly to shorten the path. Referring to FIGS. 4 and 5, since the motor water pump 61 and the water-cooled condenser 51 must be located on the first side of the valve assembly, the motor water pump 61 can be located at the bottom or top to facilitate the arrangement of each device on the first side of the valve assembly. FIG. 4 shows an example in which the motor water pump 61 is located at the bottom. However, the second motor valve port 21′, the first heat dissipation valve port 23, and the second heat dissipation valve port 24′ can be located on the first side of the valve assembly. 23 ' are all provided in the center of the first base 11. To avoid the crossing arrangement between the first heat dissipation branch 431 and the second motor branch 412 and the crossing arrangement between the second heat dissipation branch 432 and the second motor branch 412, two heat dissipation branches can be provided between the two motor branches, and two heat dissipation valve ports can be provided between the valve ports of the two motors 91.

[0047] 3 and 4, in order to lead the two heat dissipation branch pipes out of the case 1 and connect them to the heat dissipator 81, a heat dissipation inlet joint 433 and a heat dissipation outlet joint 434 shown in Fig. 3 can be provided to penetrate the case 1. The heat dissipation inlet joint 433 and the heat dissipation outlet joint 434 can be extended forward.

[0048] 1, 4, 5, and 8, a relay valve port 24 may be further provided on the first side. The relay valve port 24 may be connected to the first heat dissipation valve port 23 and the second heat dissipation valve port 24. 23 ' can be provided between the relay valve port 24 and the second heat dissipation valve port '. 23 ' can be communicated with the first motor valve port 21 through a relay pipe 44. The relay pipe 44 can be provided on the same layer as the heat dissipation group. The valve assembly is used to communicate the first motor valve port 21 with the first heat dissipation valve port 23 when the heat dissipation group 81 is activated, and the valve assembly is further used to communicate the relay valve port 24 with the first motor valve port 21 when the heat dissipation group 81 is not activated.

[0049] Specifically, when the temperature of the motor 91 is within a predetermined range, the heat management device stops dissipating heat from the motor 91 through the radiator 81. At this time, the heat transfer pipe between the motor 91 and the radiator 81 can be blocked. For this reason, it is necessary to provide the relay valve port 24. Here, the relay valve port 24 and the relay pipe 44 are connected to each other. product The layers are interconnected to form a continuous interconnection.

[0050] In addition, the relay valve port 24 and the second heat dissipation valve port 23 The reason why the communication is established through the relay pipe 44 instead of through the valve operation of the valve assembly is as follows: Referring to FIG. 1, an internal pipe is provided inside the valve assembly, and two valve ports are connected by using the valve assembly. and internal conduit and The valve ports can be connected to each other by valve operation. Each valve port has a first end and a second end, the first end communicating with the heat transfer conduit and the second end communicating with the internal conduit. The flow direction of the heat transfer medium in the heat transfer conduit and the internal conduit is determined.

[0051] 1, the heat transfer medium flows into the first end of the first motor valve port 21 through the first motor branch pipe 411, and then flows to the first heat dissipation valve port 23 or the relay valve port 24 through the internal conduit formed by the valve operation of the valve assembly. When the first motor valve port 21 and the first heat dissipation valve port 23 are connected through the internal conduit, the heat transfer medium can flow out of the first heat dissipation valve port 23 through the first heat dissipation branch pipe 431. After passing through the radiator 81, the heat transfer medium flows out of the second heat dissipation valve port 23 through the second heat dissipation branch pipe 432. 23 ' and the second heat dissipation valve port 23 ' is communicated with the other valve ports via internal conduits.

[0052] Similarly, when the first motor valve port 21 and the relay valve port 24 are connected via an internal pipe, the heat transfer medium flows out of the relay valve port 24 via the relay pipe 44 and into the second heat dissipation valve port 25. 23 ' and the second heat dissipation valve port 23 ' is communicated with the other valve ports via internal conduits.

[0053] 1 and 2, a water-cooled condenser 51 can be provided on the front surface of the case 1, and the multiple groups of heat transfer tubes further include a condenser group. Because the water-cooled condenser 51 needs to dissipate heat through a radiator 81, a valve port of the valve assembly communicating with the water-cooled condenser 51 is also provided on the first side to avoid crossing the heat transfer pipes in the case 1. To shorten the flow path, the water-cooled condenser 51 can be provided on the first side of the valve assembly.

[0054] The water-cooled condenser 51 and the motor 91 dissipate heat through the radiator 81, so the water-cooled condenser 51 and the motor 91 can be connected in parallel within the heat management unit. To reduce the number of valve ports and heat transfer lines in the heat management unit, the water-cooled condenser 51 and the motor 91 can share the valve ports of the valve assembly.

[0055] 4 to 8, optionally, the condenser group includes a first condenser branch pipe 451, the first condenser branch pipe 451 is located behind the first motor branch pipe 411, and a first end of the first condenser branch pipe 451 communicates with the drain end of the water-cooled condenser 51, and the first motor valve port 21, the second end of the first motor branch pipe 411, and the second end of the first condenser branch pipe 451 are stacked and communicated in sequence.

[0056] Specifically, the first condenser branch pipe 451 and the pipe of the first motor 91 are connected in parallel and connected to the first motor valve port 21 of the valve assembly. Referring to FIGS. 4, 6, and 8, the first condenser branch pipe 451 can be provided on the rear wall of the second base 12. The first motor branch pipe 411 can be located in front of the first condenser branch pipe 451. The first motor branch pipe 411 has a drain hole passing therethrough. The projections of the first motor valve port 21, the drain hole of the first motor branch pipe 411, and the drain hole of the first condenser branch pipe 451 on the second base 12 overlap, and the first motor valve port 21, the drain hole of the first motor branch pipe 411, and the drain hole of the first condenser branch pipe 451 are sequentially connected from front to rear. That is, the water-cooled condenser 51 and the motor 91 can share the first motor valve port 21.

[0057] As is apparent from the above description, the heat transfer medium exits the second motor valve port 21' and enters the motor water pump 61 via the second motor branch pipe 412. To reduce the number of water pumps, one water pump can be shared for both the heat transfer piping of the water-cooled condenser 51 and the heat transfer piping of the motor 91. Referring to FIGS. 4 to 8, the motor water pump 61 can optionally have a discharge end of the first motor water pump 61 and a discharge end of the second motor water pump 61. The discharge end of the first motor water pump 61 can be connected to the water supply end of the motor 91 via the motor inlet fitting 414.

[0058] The discharge end of the second motor-operated water pump 61 can be connected to the water supply end of the water-cooled condenser 51. Specifically, a first condensation valve port 31 and a second condensation valve port 31' can be further provided on the first side of the valve assembly. The condensation group can include a second condensation branch pipe 452, a third condensation branch pipe 453, and a fourth condensation branch pipe 454. The second condensation branch pipe 452 and the third condensation branch pipe 453 can all be provided on the same layer as the motor group, and the fourth condensation branch pipe 454 can be located behind the motor group. The second condensation branch pipe 452 can be used to connect the first condensation valve port 31 to the discharge end of the second motor-operated water pump 61. The second condensation valve port 31', the third condensation branch pipe 453, and the fourth condensation branch pipe 454 can be sequentially stacked to connect them, and the fourth condensation branch pipe 454 can be connected to the water supply end of the water-cooled condenser 51. The valve assembly can communicate the first condensing valve port 31 and the second condensing valve port 31 ′ when the water-cooled condenser 51 dissipates heat through the radiator 81 .

[0059] Specifically, the motor water pump mounting seat 611 A drain port can be provided on the side wall of the motor-operated water pump 61, and a two-way pipe 612 can be provided at the drain port of the motor-operated water pump 61. The front end of the two-way pipe 612 can be connected to the motor inlet fitting 414, and the rear end of the two-way pipe 612 can be connected to the first condensate valve port 31 via the second condensate branch pipe 452. Since the motor-operated water pump 61 is provided on the first side of the valve assembly, the drain port of the motor-operated water pump 61 is provided on the first side of the valve assembly. Since there is a certain distance between the drain port of the motor-operated water pump 61 and the valve port of the valve assembly, the second condensate branch pipe 452 can be extended toward the second side.

[0060] Here, the heat transfer medium flowing out from the second motor valve port 21' passes through the second motor branch pipe 412 and enters the motor water pump 61, and then flows through the motor water pump mounting seat. 611The water is directed by the motor water pump 61 from a drain in the sidewall of the motor 91 into a two-way pipe 612 where it splits into two branches. One branch flows to the water supply end of the motor 91 via the motor inlet fitting 414, and the other branch flows to the first condenser valve port 31 via the second condenser branch 452. in When heat dissipation is required, the first condensation valve port 31 and the second condensation valve port 31' are connected, and the heat transfer medium enters the second condensation valve port 31' through the internal pipeline, passes through the third condensation branch pipe 453 and the fourth condensation branch pipe 454 in sequence, and enters the water supply end of the water-cooled condenser 51. An opening is provided on the right side of the fourth condensation branch pipe 454 so as to face the third condensation branch pipe 453, and an opening is provided on the left side of the fourth condensation branch pipe 454 so as to face the water supply end of the second pipeline of the water-cooled condenser 51.

[0061] The first condenser branch pipe 451 and the water-cooled condenser 51 may be connected to each other in a front-to-rear direction, and the fourth condenser branch pipe 454 and the water-cooled condenser 51 may be connected to each other in a front-to-rear direction. For example, four first attachment points 511 (shown in FIG. 2 ) may be provided on the front surface of the first base 11, and the water-cooled condenser 51 may be attached to the front surface of the first base 11 via the first attachment points 511. A first opening corresponding to the discharge end of the second pipe of the water-cooled condenser 51 may be provided in the first condenser branch pipe 451. A communication pipe may be connected to the discharge end of the second pipe of the water-cooled condenser 51, and the communication pipe may pass through the first base 11 to communicate with the first opening. In this manner, a flow passage extending perpendicular to the front surface of the first base 11 may be formed between the discharge end of the second pipe of the water-cooled condenser 51 and the first condenser branch pipe 451. A second opening corresponding to the water supply end of the second pipe of the water-cooled condenser 51 can be provided in the fourth condenser branch pipe 454. A communication pipe can be connected to the water supply end of the second pipe of the water-cooled condenser 51, and the communication pipe can penetrate the first base 11 and communicate with the second opening. In this way, a flow passage extending perpendicular to the front surface of the first base 11 can be formed between the water supply end of the second pipe of the water-cooled condenser 51 and the fourth condenser branch pipe 454, so that the flow path of the heat transfer medium can be shortened.

[0062] The reason why first condensation branch pipe 451 and second condensation branch pipe 452, which communicate with water-cooled condenser 51, are provided behind the motor group is as follows: First, as is clear from Fig. 4, second motor branch pipe 412 extends downward, and if fourth condensation branch pipe 454 and second motor branch pipe 412 were provided in the same layer, second motor branch pipe 412 and fourth condensation branch pipe 454 would intersect, so fourth condensation branch pipe 454 is provided in a layer behind second motor branch pipe 412. Meanwhile, third condensation branch pipe 453, which is in the same layer as the motor group, is provided to connect second condensation valve port 31' and fourth condensation branch pipe 454. one To maintain consistency, the first condenser branch 451 and the second condensation branch pipe 452 2 and 4, the water-cooled condenser 51 is disposed on the left side of the valve assembly, and therefore the first motor branch 411 is extended upward and to the right in order to avoid the water-cooled condenser 51.

[0063] 1 and 4 to 9, a first heat exchange valve port 25 and a second heat exchange valve port 25' may be further provided on the second side. A battery cooler 52 may be provided on the rear surface of the case 1. The multiple groups of heat transfer tube groups may further include a horizontal layer group and a heat exchange group, the horizontal layer group being in the same layer as the motor group and including a first horizontal layer branch pipe 461 and a second horizontal layer branch pipe 462, the heat exchange group being located behind the motor group and including a first heat exchange branch pipe 463 and a second heat exchange branch pipe 464, the first heat exchange valve port 25, the first horizontal layer branch pipe 461, and the first heat exchange branch pipe 463 being stacked in sequence and connected to each other, the second heat exchange valve port 25′, the second horizontal layer branch pipe 462, and the second heat exchange branch pipe 464 being stacked in sequence and connected to each other, the first heat exchange branch pipe 463 being connected to the water supply end of the battery cooler 52, and the second heat exchange branch pipe 464 being connected to the water discharge end of the battery cooler 52.

[0064] Specifically, the horizontal layer group and the heat exchange valve ports may be connected in a front-to-back opposing manner, and the horizontal layer group and the heat exchange group may be connected in a front-to-back opposing manner. The battery cooler 52 and the heat exchange group may also be connected in a front-to-back opposing manner. Referring to FIG. 2 , after the water-cooled condenser 51, valve assembly, battery water pump 62, and motor water pump 61 are arranged on the front surface of the first base 11, there is little space left on the front surface of the first base 11 for the battery cooler 52. Therefore, the battery cooler 52 may be arranged on the rear surface of the second base 12. As shown in FIG. 6 , the first heat exchange branch 463 and the second heat exchange branch 464 may be arranged on the rear wall of the second base 12.

[0065] The reason why the first heat exchange branch 463 and the second heat exchange branch 464, which communicate with the battery cooler 52, are provided behind the motor group is as follows: As is clear from FIGS. 2 and 3, the battery water pump 62 is located to the right of the valve assembly of the battery 92. As is clear from FIG. 4, the first battery branch 421, the second battery branch 422, and the first motor branch 411 are located to the right of the valve assembly, so there is no space left to the right of the valve assembly for installing the battery cooler 52, and the battery cooler 52 is therefore installed on the rear surface of the second base 12. Furthermore, to shorten the length of the heat transfer piping, the first heat exchange branch 463 and the second heat exchange branch 464 are also provided on the rear wall of the second base 12. In other words, the heat exchange group is located behind the motor group. Therefore, a first horizontal layer branch pipe 461 is provided in the same layer as the motor group to connect the first heat exchange valve port 25 and the first heat exchange branch pipe 463, and a second horizontal layer branch pipe 462 is provided in the same layer as the motor group to connect the second heat exchange valve port 25' and the second heat exchange branch pipe 464.

[0066] FIG. 10 is a cross-sectional view taken along CC in FIG. 7. Referring to FIGS. 1 and 4 to 10, in order to improve the integration of the thermal management device, a heat transfer pipe for communicating between the electric heater 93 and the heater core 94 can be further integrated in the thermal management device. Optionally, a first electric heating valve port 32 and a second electric heating valve port 32' are further provided on the second side of the valve assembly. The plurality of groups of heat transfer pipes further includes an electric heating group. The electric heating group includes a first electric heating branch, a second electric heating branch 473, and a third electric heating branch 474. The first electric heating branch connects the first electric heating valve port 32 to the electric heater 93. of The first electric heating branch 471 is used to communicate with the water discharge end of the heater core 94, the second electric heating branch 472 is used to communicate with the water discharge end of the heater core 94, and the third electric heating branch 474 is used to communicate with the water supply end of the heater core 94 and the water supply end of the electric heater 93.

[0067] Specifically, the battery 92 or the passenger compartment can be heated by an electric heater 93 and a heater core 94. An electric heated water pump 63 can be further provided in the case 1. As shown in FIG. 2, the electric heated water pump 63 is mounted on an electric heated water pump mounting base. 631 The first base 11 can be attached to the front surface of the first base 11 by the above-mentioned method. A method of communicating between the electric heating group and the electric heating valve port so that they communicate in opposing directions from front to back can be used, and a method of communicating between the electric heating group and the electric heated water pump 63 so that they communicate in opposing directions from front to back can also be used.

[0068] Optionally, an electric heating inlet fitting 475, a heater inlet fitting 476, and a heater outlet fitting 477 may be provided extending through the case 1 to allow the electric heating group to exit the case 1 and communicate with the electric heater 93 or heater core 94, as shown in FIG.

[0069] Continuing to refer to FIGS. 1 and 4 to 10, to facilitate the arrangement of the battery pack, heat exchange group, and electric heating group, the first heat exchange valve port 25 may be selectively positioned between the first battery valve port 22 and the second battery valve port 22'. The second heat exchange valve port 25' may be positioned below the second motor valve port 21'. A third battery valve port 33 is further provided on the second side. The third battery valve port 33, the first electric heating valve port 32, and the second electric heating valve port 32' may be sequentially arranged below the second heat exchange valve port 25' from top to bottom.

[0070] 1 and 6, the first heat exchange branch pipe 463 may have a first heat exchange discharge end and a second heat exchange discharge end. The first heat exchange discharge end is connected to the water supply end of the battery cooler 52, and the second heat exchange discharge end is connected to the water supply end of the electric heater 93. The second horizontally layered branch pipe 462 is arranged vertically, and a first end of the second horizontally layered branch pipe 462 is stacked and connected to the second heat exchange valve port 25′, and a second end of the second horizontally layered branch pipe 462 is stacked and connected to the third battery valve port 33.

[0071] The valve assembly is electrically heated by a battery 92 vessel When heated by the battery, the first electric heating valve port 32 is connected to the third battery valve port 33, and the first electric heating valve port 32 is connected to the second electric heating valve port 32', and the ratio of the flow from the first electric heating valve port 32 to the third battery valve port 33 and the second electric heating valve port 32' is allocated.

[0072] Specifically, referring to Fig. 6, the first heat exchange branch 463 may have a water inlet provided in the middle thereof, a first heat exchange outlet end extending downward and leftward, and a second heat exchange outlet end extending upward and rightward. That is, referring to Figs. 1 and 6, the first heat exchange valve port 25 is connected to the first heat exchange branch 463 so as to face each other front to back. A portion of the heat transfer medium flowing out of the first heat exchange valve port 25 enters the battery cooler 52 and flows back to the second heat exchange valve port 25' via the second heat exchange branch 464. The remaining portion of the heat transfer medium flowing out of the first heat exchange valve port 25 enters the electric heater 93 and flows into the first electric heating valve port 32 via the first electric heating branch. Electric heater 93 Heating When the heat transfer medium circulates to heat the battery 92, the first electric heating valve port 32 and the second electric heating valve port 32' are in communication with each other. The heat transfer medium flows into the second electric heating valve port 32', enters the heater core 94 via the second electric heating branch 473, and enters the electric heater 93 via the third electric heating branch 474.

[0073] Thus, the electric heater 93 is connected in parallel with the battery cooler 52 and is connected into the first heat exchange valve port 25 of the valve assembly, and the first heat exchange branch 463 has its second heat exchange outlet end connected in parallel with the third heat exchange branch and is connected into the water inlet end of the electric heater 93.

[0074] Please refer to Figures 2 and 3. communication do Electric heating water pump63can also be integrated into the heat manager. Optionally, the electric heating water pump 63 can be mounted on the front surface of the first base 11 for modular installation. To simplify the piping and avoid interference between the piping, the electric heating water pump 63 can be provided at the upper right of the valve assembly. Referring to FIG. 6 , a third electric heating branch 474 is provided at the rear side of the motor group to connect the second heat exchange discharge end and the third heat exchange branch of the first heat exchange branch 463 in parallel to the water supply end of the electric heater 93. A water supply pipe can be provided at the water supply port of the electric heating water pump 63, and the second heat exchange discharge end and the third heat exchange branch of the first heat exchange branch 463 can be connected to the water supply pipe of the electric heating water pump 63. The discharge end of the electric heating water pump 63 can be connected to the electric heater 93 via an electric heating inlet fitting 475 shown in FIG. 3.

[0075] The first electric heating branch pipe has a first portion 471 and a second portion 472 for easy arrangement, the first portion 471 being located behind the motor group, the second portion 472 being in the same layer as the motor group, and the second portion 472 being stacked and connected to the first portion 471, and the second portion 472 being stacked and connected to the first electric heating valve port 32.

[0076] Continuing to refer to FIGS. 1 and 4 to 9, the first horizontal layer branch pipe 461 may be used to connect the first heat exchange valve port 25 and the discharge end of the controller 95. The horizontal layer group may further include a third horizontal layer branch pipe 465. A first end of the third horizontal layer branch pipe 465 may be connected to an end of the first battery branch pipe 421 that is remote from the first battery valve port 22. A second end of the third horizontal layer branch pipe 465 may be connected to the water supply end of the controller 95 so that the controller 95 is connected in parallel with the battery 92.

[0077] Optionally, a water storage area 7 is further provided in the case 1. The water storage area 7 is located above the heat transfer tube group and is used to supply water to the heat transfer tube group. Specifically, the water storage area 7 is left above the heat transfer tube group so that the water in the water storage area 7 flows from higher to lower places.

[0078] Based on the functions realized by the above-mentioned valve assembly, the valve assembly can include a 9-way valve 2 and a 5-way valve 3 arranged vertically. The 9-way valve 2 includes a first motor valve port 21, a second motor valve port 21', a first battery valve port 22, a second battery valve port 22', a first heat dissipation valve port 23, a second heat dissipation valve port 24, a 23 The five-way valve 3 has nine valve ports: a first condensing valve port 31, a second condensing valve port 31', a first electric heating valve port 32, a second electric heating valve port 32', and a third battery valve port 33.

[0079] This application is An electric vehicle including a motor 91, a battery 92, a radiator 81, and a thermal management device according to the above embodiment. provide more .

[0080] A person skilled in the art can obtain all other embodiments without creative work based on the embodiments in this application, and all other embodiments fall within the scope of protection of this application. The following embodiments and features in the embodiments can be combined with each other unless they are inconsistent.

[0081] Terms such as "upper" and "lower" are used to describe the relative positional relationship of each structure in the drawings, and are not used to limit the scope in which the present application can be implemented. They are used only to facilitate clarity of the description, and their relative positions are not intended to limit the scope in which the present application can be implemented. position Any change or adjustment of the relationship shall be deemed to be within the scope of the application unless there is a substantial change in the technical content.

[0082] In this application, unless otherwise specified, a first feature being "above" or "below" a second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact via an intermediate medium. Furthermore, a first feature being "above," "above," and "on" a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the level of the first feature is higher than that of the second feature. Furthermore, a first feature being "below," "below," and "below" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the level of the first feature is lower than that of the second feature.

[0083] Furthermore, in this application, unless otherwise specified, the terms "attach," "couple," "connect," "fix," etc. should be understood in a broad sense, and may refer to, for example, fixed connection, detachable connection, or integration, direct connection, indirect connection via an intermediate medium, internal communication between two components, or an interactive relationship between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this application depending on the specific circumstances.

[0084] In the description herein, when a statement refers to terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," it means that the specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the disclosure. Exemplary references to such terms in the description herein do not necessarily refer to the same embodiment or example. Furthermore, a particular feature, structure, material, or characteristic described may be incorporated in any suitable manner in any one or more embodiments or examples.

[0085] Finally, it should be noted that the above embodiments are for illustrating the technical solutions of the present application, not for limiting the same. The present application will be described in detail with reference to the above embodiments, but those skilled in the art may still modify the technical solutions described in the above embodiments or make equivalent substitutions for some or all of the technical features thereof, and it should be understood that such modifications or substitutions will not deviate from the essence of the corresponding technical solutions and the scope of the technical solutions of the embodiments of the present application.

[0086] This application claims priority to a Chinese patent application filed with the China Patent Office on September 27, 2021, bearing application number 202111138848.7 and entitled "Electric vehicle and thermal management device therefor," the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0087] 1. Case 11. First base 12. Second base 2. 9-way valve 21, first motor valve port 21', 2nd motor valve port 22. First battery valve port 22', 2nd battery valve port 23. First heat dissipation valve port 23', second heat release valve port 24. Relay valve port 25, first heat exchange valve port 25', 2nd heat exchange valve port to 26, first valve assembly mounting point 3, 5-way valve 31, first condensation valve port 31', 2nd condensation valve port to 32, first electric heating valve port 32', 2nd electric heating valve port to 33. Third battery valve port 34, second valve assembly mounting point 411, 1st motor branch 412, second motor branch 413, motor outlet fitting 414, motor inlet joint 421, 1st battery branch 422, second battery branch 423, Battery inlet fitting 424, Battery outlet fitting 431, 1st heat dissipation branch pipe 432, 2nd heat dissipation branch pipe 433, Heat dissipation inlet joint 434, Heat dissipation outlet fittings 44. Relay pipe 451, First condensation branch 452, second condensation branch 453, 3rd condensation branch 454, 4th condensation branch 456, First opening 457, second opening 461, 1st horizontal layer branch pipe 462, 2nd horizontal layer branch pipe 463, 1st heat exchange branch pipe 464, 2nd heat exchange branch pipe 465, 3rd horizontal layer branch pipe 466, first inlet fitting 467, first outlet fitting 471, Part 1 472, 2nd part 473, No. 2 electric heating branch 474, the third electric heating branch 475, Electrically heated inlet fittings 476, heater inlet fitting 477, heater outlet fitting 51. Water-cooled condenser 511, first attachment point 52. Battery cooler 53, gas-liquid separator 531, third attachment point 54, coaxial tube 61. Motor water pump 611, Motor water pump mounting base 612, two-way pipe 62. Battery water pump 621, Battery water pump mounting base 63. Electric heating water pump 631, Electric heating water pump mounting base 64. Water pump supply pipe 7. Water storage area 81, radiator 82. Compressor 83, internal evaporator 84, internal condenser 85. Stop valve 86. Expansion valve 91. Motor 92. Battery 93. Electric heater 94. Heater core 95. Controller

Claims

1. A thermal management device for an electric vehicle including a case, wherein a plurality of groups of heat transfer tubes are housed in the case, and each of the heat transfer tubes in each group includes two heat transfer branch pipes, a first end of a first heat transfer branch pipe of the group being provided to pass through the case and being used to connect a water supply end of a device, and a first end of a second heat transfer branch pipe of the group being provided to pass through the case and being used to connect a water discharge end of the same device, a valve assembly is provided on a front surface of the case, the valve assembly is provided with a plurality of valve ports, each of the valve ports is connected to a second end of at least one of the heat transfer branch pipes in a front-to-rear direction, and two of the heat transfer branch pipes in the same group are connected to different valve ports; the valve assembly is used to selectively connect different valve ports when the thermal manager switches modes, thereby connecting and disconnecting heat transfer circuits in which different devices are arranged; the valve assembly has a first side and a second side, the first side having a first motor valve port and a second motor valve port disposed one above the other, and the second side having a first battery valve port and a second battery valve port disposed one above the other; The plurality of groups of heat transfer tubes include motors and batteries, the battery groups being arranged on the same layer as the motor groups, the motor groups including a first motor branch and a second motor branch, the first motor branch being used to connect the first motor valve port to a discharge end of the motor, and the second motor branch being used to connect the second motor valve port to a water supply end of the motor; The battery group includes a first battery branch and a second battery branch, the first battery branch is used to connect the first battery valve port to a drain end of the battery, and the second battery branch is used to connect the second battery valve port to a water supply end of the battery; The first side further includes a first heat dissipation valve port and a second heat dissipation valve port arranged vertically, and the two heat dissipation valve ports are located between the two motor valve ports; The plurality of heat transfer pipe groups further includes a heat dissipation group disposed in the same layer as the motor group, the heat dissipation group including a first heat dissipation branch pipe and a second heat dissipation branch pipe, the two heat dissipation branches being located between the two motor branches, the first heat dissipation branch pipe being used to connect the first heat dissipation valve port with the water supply end of the radiator, and the second heat dissipation branch pipe being used to connect the second heat dissipation valve port with the water discharge end of the radiator; a relay valve port is further provided on the first side, located between the first heat dissipation valve port and the second heat dissipation valve port, the relay valve port is connected to the second heat dissipation valve port through a relay pipe, and the relay pipe is provided in the same layer as the heat dissipation group; The valve assembly is used to communicate between the first motor valve port and the first heat dissipation valve port when a radiator is activated, and the valve assembly is further used to communicate between the relay valve port and the first motor valve port when the radiator is not activated.

2. a water-cooled condenser is further provided on the front surface of the case, and the plurality of groups of heat transfer tubes further include a condensation group; 2. The thermal management device for an electric vehicle of claim 1, wherein the condenser group includes a first condenser branch pipe, the first condenser branch pipe is located rearward of the first motor branch pipe, a first end of the first condenser branch pipe is connected to a drain end of the water-cooled condenser, and the first motor valve port, the second end of the first motor branch pipe, and the second end of the first condenser branch pipe are connected sequentially in opposing front-to-rear directions.

3. A water-cooled condenser is further provided on the front surface of the case, and the plurality of groups of heat transfer tubes further include a condensation group; A motor water pump is provided on the front surface of the case, located on a first side of the valve assembly, and the motor water pump has a water supply end connected to the second motor branch pipe so as to face each other in the front and rear directions. The motor water pump has a first motor water pump discharge end and a second motor water pump discharge end, and the first motor water pump discharge end is used to communicate with the motor water supply end. The first side is provided with a first condensation valve port and a second condensation valve port. The condensation group includes a second condensation branch pipe, a third condensation branch pipe, and a fourth condensation branch pipe. The second condensation branch pipe and the third condensation branch pipe are connected to the motor group. the fourth condensate branch pipe is located at the rear of the motor group; the second condensate branch pipe is used to connect the first condensate valve port to the discharge end of the second motor water pump; the second condensate valve port, the third condensate branch pipe, and the fourth condensate branch pipe are sequentially connected to each other in an opposing front-to-rear direction; the fourth condensate branch pipe is connected to the water supply end of the water-cooled condenser; and the valve assembly is used to connect the first condensate valve port to the second condensate valve port when the water-cooled condenser dissipates heat through a radiator.

4. the second side further comprises a first heat exchange valve port and a second heat exchange valve port; 2. The thermal management device for an electric vehicle of claim 1, wherein a battery cooler is provided on a rear surface of the case, and the plurality of groups of heat transfer tubes further include a horizontal layer group and a heat exchanger group, the horizontal layer group being in the same layer as the group of motors, the horizontal layer group including a first horizontal layer branch pipe and a second horizontal layer branch pipe, the heat exchanger group being located behind the group of motors, and the heat exchanger group including a first heat exchange branch pipe and a second heat exchange branch pipe, the first heat exchange valve port, the first horizontal layer branch pipe, and the first heat exchange branch pipe being sequentially connected to face each other in the front and rear, the second heat exchange valve port, the second horizontal layer branch pipe, and the second heat exchange branch pipe being sequentially connected to face each other in the front and rear, the first heat exchange branch pipe being connected to a water supply end of the battery cooler, and the second heat exchange branch pipe being connected to a water discharge end of the battery cooler.

5. 5. The thermal management device for an electric vehicle of claim 4, wherein the first horizontal layer branch pipe is used to communicate the first heat exchange valve port and a water discharge end of a controller, and the horizontal layer group further includes a third horizontal layer branch pipe, a first end of the third horizontal layer branch pipe being connected to an end of the first battery branch pipe remote from the first battery valve port, and a second end of the third horizontal layer branch pipe being connected to a water supply end of the controller.

6. a first electrically heated valve port and a second electrically heated valve port are further provided on the second side; 5. The thermal management device for an electric vehicle according to claim 4, wherein the plurality of groups of heat transfer pipes further comprise an electric heating group, and the electric heating group comprises a first electric heating branch pipe, a second electric heating branch pipe, and a third electric heating branch pipe, the first electric heating branch pipe is used to connect the first electric heating valve port with a drain end of the electric heater, the second electric heating branch pipe is used to connect the second electric heating valve port with a water supply end of the heater core, and the third electric heating branch pipe is used to connect the drain end of the heater core with the water supply end of the electric heater.

7. the first heat exchange valve port is located between the first battery valve port and the second battery valve port, the second heat exchange valve port is located below the second motor valve port, and a third battery valve port is further provided on the second side, and the third battery valve port, the first electric heating valve port, and the second electric heating valve port are sequentially provided below the second heat exchange valve port from top to bottom; the first heat exchange branch pipe has a first heat exchange discharge end and a second heat exchange discharge end, the first heat exchange discharge end is connected to the water supply end of the battery cooler, and the second heat exchange discharge end is connected to the water supply end of the electric heater; the second horizontal layer branch pipe is arranged along a vertical direction, a first end of the second horizontal layer branch pipe is connected to the second heat exchange valve port so as to face the front and rear of the second horizontal layer branch pipe, and a second end of the second horizontal layer branch pipe is connected to the third battery valve port so as to face the front and rear of the second horizontal layer branch pipe; 7. The thermal management device for an electric vehicle of claim 6, wherein the valve assembly is used to communicate the first electric heating valve port with a third battery valve port and the first electric heating valve port with a second electric heating valve port when the battery is heated by the electric heater, and to allocate a ratio of flow from the first electric heating valve port to the third battery valve port and the second electric heating valve port.

8. 8. The thermal management device for an electric vehicle according to claim 7, wherein the third electric heating branch is disposed behind the motor group, and an electric heated water pump is further disposed on a front surface of the case, the third electric heating branch is connected in parallel with a second heat exchange outlet end of the first heat exchange branch and is connected to a water inlet of the electric heated water pump, and a water outlet of the electric heated water pump is connected to the water inlet of the electric heater.

9. 8. The thermal management device for an electric vehicle of claim 7, wherein the first electric heating branch pipe comprises a first portion and a second portion, the first portion being located behind the motor group, the second portion being in the same layer as the motor group, and the second portion being in communication with the first portion in opposing front-to-rear directions, and the second portion being in communication with the first electric heating valve port in opposing front-to-rear directions.

10. 10. The thermal management device for an electric vehicle according to claim 1, further comprising a water storage area provided in the case, the water storage area being located above the heat transfer tube group and being used to supply water to the heat transfer tube group.

11. The thermal management device for an electric vehicle according to any one of claims 1 to 9, characterized in that the case further comprises a gas-liquid separator, a portion of an air conditioning pipe, a stop valve, and an expansion valve.

12. An electric vehicle comprising a motor, a battery, a radiator, and the thermal management device according to any one of claims 1 to 9.

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