Electric vehicle thermal management system

Abstract

This application relates to the field of electric vehicle thermal management technology, and more particularly to an electric vehicle thermal management system. This electric vehicle thermal management system includes an on-board heat exchange circuit containing a fluid medium. The on-board heat exchange circuit is connected to an on-board docking terminal. The electric vehicle thermal management system includes: a temperature regulating device comprising a heat exchange source and a first heat exchange pipeline, the heat exchange source and the first heat exchange pipeline being heat-transferringly connected. The first heat exchange pipeline has a ground docking terminal for docking with the on-board docking terminal. After docking, the fluid medium in the on-board heat exchange circuit can enter the first heat exchange pipeline, and after temperature regulation by the heat exchange source, return to the on-board heat exchange circuit through the first heat exchange pipeline; a driving device connected to the ground docking terminal for driving the ground docking terminal to move closer to the on-board docking terminal. This application can solve the problems of shortened battery life or significantly reduced charging speed.

Description

Technical Field

[0001] This application relates to the field of electric vehicle thermal management technology, and more particularly to an electric vehicle thermal management system. Background Technology

[0002] With the rapid development of the electric vehicle industry, the demand for fast charging of electric vehicles is becoming increasingly urgent.

[0003] At high ambient temperatures, fast charging can cause severe battery overheating, leading to a shortened battery life. At low ambient temperatures, the activity of ions inside the battery decreases, and the migration rate of ions within the battery slows down, resulting in a significant decrease in charging speed.

[0004] Therefore, current electric vehicles utilize the onboard air conditioning system and onboard heat exchange circuit to exchange heat with the battery, thereby regulating the battery temperature. However, current electric vehicles have a relatively poor ability to regulate battery temperature, and the risks of shortened battery life or a significant decrease in charging speed remain substantial. Utility Model Content

[0005] This application discloses an electric vehicle thermal management system that can reduce the risk of shortened battery life or the risk of a significant drop in charging speed.

[0006] To achieve the above objectives, this application discloses an electric vehicle thermal management system. The electric vehicle thermal management system is used to interface with an electric vehicle. The electric vehicle includes an on-board heat exchange circuit for regulating its own battery temperature. A fluid medium is provided within the on-board heat exchange circuit, and the on-board heat exchange circuit is connected to an on-board docking terminal. The electric vehicle thermal management system includes:

[0007] A temperature regulating device includes a heat exchange source and a first heat exchange pipeline. The heat exchange source is heat-transferringly connected to the first heat exchange pipeline to regulate the temperature of the fluid medium in the first heat exchange pipeline. The first heat exchange pipeline has a ground docking end for docking with a vehicle docking end. After the ground docking end docks with the vehicle docking end, the fluid medium in the vehicle heat exchange circuit can enter the first heat exchange pipeline, and after the temperature is regulated by the heat exchange source, it returns to the vehicle heat exchange circuit through the first heat exchange pipeline.

[0008] A drive unit, connected to the ground docking end, is used to drive the ground docking end to move closer to the vehicle docking end.

[0009] In one optional embodiment, the driving device is used to drive the ground docking end to move along a first horizontal direction, a second horizontal direction and a vertical direction, respectively, wherein the first horizontal direction is perpendicular to the second horizontal direction.

[0010] In one optional embodiment, the vehicle docking terminal includes a vehicle output terminal and a vehicle input terminal, and the ground docking terminal includes a ground output terminal and a ground input terminal. The ground output terminal is used to dock with the vehicle input terminal, and the ground input terminal is used to dock with the vehicle output terminal.

[0011] After the ground docking end is docked with the vehicle docking end, the fluid medium in the vehicle heat exchange circuit can enter the first heat exchange pipeline through the vehicle output end and the ground input end in sequence, and after the temperature is adjusted by the heat exchange source, it returns to the vehicle heat exchange circuit through the ground output end and the vehicle input end in sequence.

[0012] Both the port of the ground output terminal and the port of the ground input terminal are positioned upwards.

[0013] In one optional embodiment, the electric vehicle thermal management system further includes a controller and a position detection device, the controller being communicatively connected to the position detection device and the drive device respectively, and the position detection device being used to detect the spatial position information of the vehicle docking end;

[0014] The controller is used to control the drive device to drive the ground docking end to dock with the vehicle docking end based on the spatial location information.

[0015] In one optional embodiment, the electric vehicle thermal management system further includes a triggering device disposed at the ground docking end, the triggering device being communicatively connected to the controller;

[0016] The triggering device is used to issue a trigger signal when the ground docking end docks with the vehicle docking end; the controller is used to control the driving device to stop driving the ground docking end to move based on the trigger signal.

[0017] In one optional embodiment, the electric vehicle thermal management system further includes a pressure detection device disposed at the ground docking end, the pressure detection device being communicatively connected to the controller, and the pressure detection device being used to detect the pressure value applied by the electric vehicle;

[0018] The controller is used to control the drive device to adjust the position of the ground docking end based on the pressure value.

[0019] In one alternative embodiment, the position detection device includes at least one of a lidar, a millimeter-wave radar, and an image acquisition device.

[0020] In one alternative embodiment, the heat exchange source includes a compressor, a four-way valve, a first heat exchanger, and a second heat exchanger connected in series to form a loop.

[0021] The first heat exchanger is connected to the first heat exchange pipeline for heat transfer.

[0022] In one optional embodiment, the second heat exchanger is a liquid-cooled heat exchanger, and the heat exchange source further includes a second heat exchange pipeline and an air heat exchanger. The second heat exchange pipeline contains a fluid medium, and both ends of the second heat exchange pipeline are connected to the second heat exchanger. The air heat exchanger is connected in series with the second heat exchange pipeline.

[0023] The electric vehicle thermal management system further includes a third heat exchange pipeline, a valve assembly, and a charging device for charging the electric vehicle. The third heat exchange pipeline is connected in parallel with the second heat exchange pipeline, and the charging device includes a power device that is heat-transfer connected to the third heat exchange pipeline.

[0024] The valve assembly has a first state and a second state. When the valve assembly is in the first state, the fluid medium in the second heat exchange pipeline circulates within the second heat exchange pipeline. When the valve assembly is in the second state, the fluid medium in the second heat exchange pipeline can enter the third heat exchange pipeline and return to the second heat exchange pipeline after being heated by the power device.

[0025] In one alternative embodiment, the heat exchange source includes a constant temperature layer located below the ground, and a portion of the first heat exchange pipeline passes through the constant temperature layer.

[0026] Compared with related technologies, the beneficial effects of this application are:

[0027] The electric vehicle thermal management system of this application includes a temperature regulating device, which includes a heat exchange source and a first heat exchange pipeline. The heat exchange source is used to regulate the temperature of the fluid medium in the first heat exchange pipeline. The ground docking end of the first heat exchange pipeline is used to dock with the vehicle docking end of the vehicle heat exchange circuit. After the two are docked, the fluid medium in the vehicle heat exchange circuit can enter the first heat exchange pipeline, and after the temperature is regulated by the heat exchange source, it returns to the vehicle heat exchange circuit through the first heat exchange pipeline, thereby raising and / or lowering the temperature of the electric vehicle's battery.

[0028] Furthermore, since the electric vehicle thermal management system is located on the ground rather than on the electric vehicle, it is not limited by the weight of the entire vehicle. Even if the temperature regulation device is set to a higher power, it will not increase the weight of the entire vehicle. In this way, while ensuring the ability to regulate the battery temperature, the weight of the electric vehicle can be reduced, thereby reducing the risk of shortened battery life or the risk of a significant decrease in charging speed.

[0029] In addition, the electric vehicle thermal management system of this application also includes a drive device, which is used to drive the ground docking end to move closer to the vehicle docking end, thereby shortening the distance between the ground docking end and the vehicle docking end, so as to reduce the difficulty for users to dock the ground docking end with the vehicle docking end. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments 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.

[0031] Figure 1 This is a system diagram of the electric vehicle thermal management system disclosed in an embodiment of this application;

[0032] Figure 2 This is a system diagram of an electric vehicle thermal management system disclosed in another embodiment of this application;

[0033] Figure 3 This is a simplified structural diagram of the driving device disclosed in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Temperature control device; 110. Heat exchange source; 111. Compressor; 112. Four-way valve; 113. First heat exchanger; 114. Second heat exchanger; 115. Gas-liquid separator; 116. Second heat exchange pipeline; 117. Air heat exchanger; 118. Constant temperature layer; 120. First heat exchange pipeline; 121. Ground connection end; 122. Ground output end; 123. Ground input end;

[0036] 200. Drive device; 210. Lifting mechanism; 220. First horizontal guide rail; 230. Second horizontal guide rail; 240. First drive mechanism; 241. First energized coil; 242. First magnetic component; 250. Second drive mechanism; 251. Second energized coil; 252. Second magnetic component;

[0037] 300. Position detection device;

[0038] 400. Triggering device;

[0039] 500. Pressure detection device;

[0040] 610. Third heat exchange pipeline; 620. Valve assembly; 630. Charging device; 631. Power device;

[0041] 700. On-board heat exchange circuit; 710. On-board docking pipeline; 711. On-board docking terminal; 712. On-board output terminal; 713. On-board input terminal;

[0042] 810. Vehicle temperature control device; 820. Battery;

[0043] 900, parking spaces. Detailed Implementation

[0044] 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 skilled in the art without creative effort are within the scope of protection of this application.

[0045] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0046] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0047] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0049] With the rapid development of the electric vehicle industry, the demand for fast charging of electric vehicles is becoming increasingly urgent.

[0050] At high ambient temperatures, fast charging can cause severe battery overheating, leading to a shortened battery life. At low ambient temperatures, the activity of ions inside the battery decreases, and the migration rate of ions within the battery slows down, resulting in a significant decrease in charging speed.

[0051] Therefore, current electric vehicles utilize the onboard air conditioning system to exchange heat with the onboard heat exchange circuit, and also utilize the onboard heat exchange circuit to exchange heat with the battery in order to regulate the battery temperature.

[0052] The inventors discovered that current electric vehicles, in order to limit the overall weight, have low-power onboard temperature control devices. This results in the vehicle not being able to provide enough cooling or heating power to meet the heat exchange requirements during fast charging of the battery, thus causing poor ability to regulate battery temperature, leading to shortened battery life or a significant decrease in charging speed.

[0053] The electric vehicle thermal management system provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0054] like Figure 1 and Figure 3 As shown in the illustration, this application discloses an electric vehicle thermal management system that can be installed on the ground. The system is used to interface with an electric vehicle. The electric vehicle includes an on-board heat exchange circuit 700 for regulating the temperature of its own battery 820. The on-board heat exchange circuit 700 contains a fluid medium and is connected to an on-board docking terminal 711. For example, the on-board heat exchange circuit 700 is connected in parallel to an on-board docking pipe 710, which also has an on-board docking terminal 711. For example, the electric vehicle may also include an on-board temperature regulating device 810, which is heat-transferringly connected to the on-board heat exchange circuit 700 to regulate the temperature of the fluid medium in the circuit. The on-board temperature regulating device 810 can be an on-board air conditioning system. The electric vehicle thermal management system includes:

[0055] The temperature regulating device 100 includes a heat exchange source 110 and a first heat exchange pipeline 120. The heat exchange source 110 is heat-transferringly connected to the first heat exchange pipeline 120 to regulate the temperature of the fluid medium in the first heat exchange pipeline 120, for example, by raising and / or lowering the temperature of the fluid medium in the first heat exchange pipeline 120. The first heat exchange pipeline 120 has a ground docking end 121 for docking with a vehicle docking end 711. Exemplarily, the first heat exchange pipeline 120 may be filled with a fluid medium; alternatively, the first heat exchange pipeline 120 may not be filled with a fluid medium, in which case the fluid medium in the vehicle heat exchange circuit 700 may be used.

[0056] After the ground docking end 121 docks with the vehicle docking end 711, the fluid medium in the vehicle heat exchange circuit 700 can enter the first heat exchange pipeline 120, and after the temperature is regulated by the heat exchange source 110, it returns to the vehicle heat exchange circuit 700 through the first heat exchange pipeline 120. It should be noted that the heat transfer connection between the heat exchange source 110 and the first heat exchange pipeline 120 means that there is a heat transfer channel between the heat exchange source 110 and the first heat exchange pipeline 120, so that the heat exchange source 110 can exchange heat with the first heat exchange pipeline 120; here, the heat exchange source 110 can be in contact with the first heat exchange pipeline 120 or can be isolated from the first heat exchange pipeline 120.

[0057] The drive unit 200 is connected to the ground docking end 121 and is used to drive the ground docking end 121 to move toward the vehicle docking end 711.

[0058] The electric vehicle thermal management system of this application includes a temperature regulating device 100, which includes a heat exchange source 110 and a first heat exchange pipeline 120. The heat exchange source 110 is used to regulate the temperature of the fluid medium in the first heat exchange pipeline 120. The ground docking end 121 of the first heat exchange pipeline 120 is used to dock with the vehicle docking end 711 of the vehicle heat exchange circuit 700. After the two are docked, the fluid medium in the vehicle heat exchange circuit 700 can enter the first heat exchange pipeline 120, and after the temperature is regulated by the heat exchange source 110, it returns to the vehicle heat exchange circuit 700 through the first heat exchange pipeline 120, thereby raising and / or lowering the temperature of the electric vehicle battery 820.

[0059] Furthermore, since the electric vehicle thermal management system is located on the ground rather than on the electric vehicle, it is not limited by the weight of the entire vehicle. Even if the temperature regulation device 100 is set to a higher power, it will not increase the weight of the entire vehicle. In this way, while ensuring the ability to regulate the temperature of the battery 820, the weight of the electric vehicle can be reduced, thereby reducing the risk of shortening the life of the battery 820 or reducing the risk of a significant decrease in charging speed.

[0060] In addition, the electric vehicle thermal management system of this application also includes a drive device 200, which is used to drive the ground docking terminal 121 to move closer to the vehicle docking terminal 711, thereby shortening the distance between the ground docking terminal 121 and the vehicle docking terminal 711, so as to reduce the difficulty for the user to dock the ground docking terminal 121 with the vehicle docking terminal 711.

[0061] Please see Figure 3 In one optional embodiment, the drive device 200 is used to drive the ground docking end 121 along a first horizontal direction ( Figure 3 The direction indicated by the middle x-arrow line), the second horizontal direction ( Figure 3The ground docking end 121 moves in the direction indicated by the arrow in the middle (in the direction shown by the arrow) and vertically so that the ground docking end 121 is close to the vehicle docking end 711, and the first horizontal direction is perpendicular to the second horizontal direction.

[0062] This application utilizes a drive device 200 to drive the ground docking end 121 to move independently in three directions: the first horizontal direction, the second horizontal direction, and the vertical direction. This allows the ground docking end 121 to move closer to the vehicle docking end 711. By adjusting the displacement in the three directions step by step, the ground docking end 121 gradually moves closer to the vehicle docking end 711, avoiding the ground docking end 121 from being outside the preset position due to a single large movement. This further reduces the difficulty for users to dock the ground docking end 121 with the vehicle docking end 711.

[0063] In this embodiment, when the drive device 200 drives the ground docking end 121 to dock with the vehicle docking end 711, by adjusting the displacement in three directions in stages, the ground docking end 121 can avoid missing the vehicle docking end 711 due to a single large movement, thus improving the accuracy of docking between the ground docking end 121 and the vehicle docking end 711. Of course, the drive device 200 can also drive the ground docking end 121 to rotate or rotate and move. This application does not limit the movement form of the drive device 200 driving the ground docking end 121.

[0064] In some embodiments, the drive device 200 includes a lifting mechanism 210, a first horizontal guide rail 220, a second horizontal guide rail 230, a first drive mechanism 240, and a second drive mechanism 250. The lifting mechanism 210 is connected to the ground docking end 121 to drive the ground docking end 121 to move in a vertical direction. The first horizontal guide rail 220 extends in a first horizontal direction, and the second horizontal guide rail 230 extends in a second horizontal direction. The lifting mechanism 210 is slidably disposed on the second horizontal guide rail 230 and can slide in the second horizontal direction. The second horizontal guide rail 230 is slidably disposed on the first horizontal guide rail 220 and can slide in the first horizontal direction.

[0065] For example, the lifting mechanism 210 can be a lead screw and nut mechanism, a gear and rack mechanism, a cylinder, an electric cylinder, etc. The first driving mechanism 240 can include a first energized coil 241 and a first magnetic element 242. Multiple first energized coils 241 are spaced apart along a first horizontal direction on a first horizontal guide rail 220, and the first magnetic element 242 is located on a second horizontal guide rail 230. By controlling the energization of each first energized coil 241, the second horizontal guide rail 230 can be driven to slide back and forth along the first horizontal direction. The second driving mechanism 250 can include a second energized coil 251 and a second magnetic element 252. Multiple second energized coils 251 are spaced apart along a second horizontal direction on a second horizontal guide rail 230, and the second magnetic element 252 is located on the lifting mechanism 210. By controlling the energization of each second energized coil 251, the lifting mechanism 210 can be driven to slide back and forth along the second horizontal direction. Of course, the first driving mechanism 240 and the second driving mechanism 250 can also be a sprocket and chain mechanism, a traveling mechanism, etc., and this application does not limit them.

[0066] In one optional embodiment, the vehicle-mounted docking terminal 711 includes a vehicle-mounted output terminal 712 and a vehicle-mounted input terminal 713, and the ground docking terminal 121 includes a ground output terminal 122 and a ground input terminal 123. The ground output terminal 122 is used to dock with the vehicle-mounted input terminal 713, and the ground input terminal 123 is used to dock with the vehicle-mounted output terminal 712. Specifically, each of the ground output terminal 122, ground input terminal 123, vehicle output terminal 712, and vehicle input terminal 713 can be equipped with a one-way valve. During docking, all one-way valves of the ground output terminal 122, ground input terminal 123, vehicle output terminal 712, and vehicle input terminal 713 are open; after docking is canceled, all one-way valves of the ground output terminal 122, ground input terminal 123, vehicle output terminal 712, and vehicle input terminal 713 are closed to prevent fluid medium from flowing out.

[0067] After the ground docking terminal 121 is docked with the vehicle docking terminal 711, the fluid medium in the vehicle heat exchange circuit 700 can enter the first heat exchange pipeline 120 through the vehicle output terminal 712 and the ground input terminal 123 in sequence, and after the temperature is adjusted by the heat exchange source 110, it returns to the vehicle heat exchange circuit 700 through the ground output terminal 122 and the vehicle input terminal 713 in sequence.

[0068] Both the port of ground output terminal 122 and the port of ground input terminal 123 are set upwards.

[0069] In this embodiment, both the ground output terminal 122 and the ground input terminal 123 are oriented upwards. This allows the vehicle output terminal 712 and the vehicle input terminal 713 to be oriented downwards, preventing dust, water droplets, debris, and other contaminants from easily entering these ports under their own weight, thus keeping them clean. Although the ground output terminal 122 and the ground input terminal 123 are oriented upwards, they are mostly idle, only exposed for a short period when a vehicle comes to dock, thus minimizing the risk of contamination. Of course, the ports of the ground output terminal 122 and the ground input terminal 123 can also be oriented horizontally; this application does not impose any limitation on this.

[0070] Please see Figure 1 In one optional embodiment, the electric vehicle thermal management system further includes a controller and a position detection device 300. The controller is communicatively connected to the position detection device 300 and the drive device 200, respectively. The position detection device 300 is used to detect the spatial position information of the on-board docking end 711. Exemplarily, the position detection device 300 includes at least one of a lidar, a millimeter-wave radar, and an image acquisition device.

[0071] The controller is used to control the drive unit 200 to drive the ground docking end 121 to dock with the vehicle docking end 711 based on spatial location information.

[0072] In this embodiment, the position detection device 300 is used to acquire the spatial position information of the vehicle docking terminal 711 of an electric vehicle parked on the ground. After receiving the spatial position information from the position detection device 300, the controller can control the drive device 200 to drive the ground docking terminal 121 to move accurately to the vehicle docking terminal 711 for docking. Therefore, this application can utilize the position detection device 300, the controller, and the drive device 200 to achieve automatic docking between the ground docking terminal 121 and the vehicle docking terminal 711, thus freeing up manpower; furthermore, the position detection device 300 enables the ground docking terminal 121 to accurately dock with the vehicle docking terminal 711.

[0073] It should be noted that there are usually parking spaces 900 on the ground, and the position detection device 300 can be set up near the parking space 900, for example, inside the parking space 900.

[0074] Please see Figure 1 In one optional embodiment, the electric vehicle thermal management system further includes a triggering device 400 located at the ground docking end 121, the triggering device 400 being communicatively connected to the controller.

[0075] The triggering device 400 is used to issue a trigger signal when the ground docking terminal 121 docks with the vehicle docking terminal 711; the controller is used to control the drive device 200 to stop driving the ground docking terminal 121 to move based on the trigger signal. For example, the triggering device 400 can be a micro switch, limit switch, etc., and this application does not limit it.

[0076] In this embodiment, a triggering device 400 is provided on the ground docking end 121. When the ground docking end 121 docks with the vehicle docking end 711, the vehicle docking end 711 will trigger the triggering device 400, thereby causing the triggering device 400 to send a trigger signal. After receiving the trigger signal, the controller can control the drive device 200 to stop driving the ground docking end 121 to move, shortening the time that the drive device 200 is in the working state. This can not only reduce energy consumption, but also extend the life of the drive device 200.

[0077] If the position of the vehicle-mounted docking terminal 711 obtained by the position detection device 300 is incorrect, it will cause the ground docking terminal 121 and the vehicle-mounted docking terminal 711 to fail to dock. In order to correct the position of the ground docking terminal 121 when its position deviates from the target position, please refer to [link to relevant documentation]. Figure 1 In one optional embodiment, the electric vehicle thermal management system further includes a pressure detection device 500 located at the ground docking end 121. The pressure detection device 500 is communicatively connected to the controller and is used to detect the pressure value applied by the electric vehicle. For example, the pressure detection device 500 can be a capacitive pressure sensor, a strain gauge pressure sensor, etc., and this application does not limit the type of pressure detection device 500.

[0078] The controller is used to control the drive unit 200 to adjust the position of the ground docking end 121 based on the pressure value.

[0079] In this embodiment, a pressure detection device 500 is provided on the ground docking end 121. The pressure detection device 500 can detect the pressure value between the ground docking end 121 and the electric vehicle. When the ground docking end 121 docks with the vehicle docking end 711, the pressure value applied by the electric vehicle to the pressure detection device 500 is a preset value.

[0080] If the pressure detected by the pressure detection device 500 is a preset value and the triggering device 400 has not yet been triggered, it indicates that the ground docking end 121 is not in the target position. At this time, the controller can control the drive device 200 to adjust the position of the ground docking end 121 until the pressure detected by the pressure detection device 500 is a preset value and the triggering device 400 is triggered. At this time, the ground docking end 121 docks with the vehicle docking end 711. It can be seen that this embodiment can correct the position of the ground docking end 121 so that the ground docking end 121 and the vehicle docking end 711 can be accurately docked.

[0081] Please see Figure 1 In one optional embodiment, the heat exchange source 110 includes a compressor 111, a four-way valve 112, a first heat exchanger 113, and a second heat exchanger 114 connected in series to form a loop. The first heat exchanger 113 is heat-transferringly connected to a first heat exchange pipeline 120, meaning there is a heat transfer channel between the first heat exchanger 113 and the first heat exchange pipeline 120. The first heat exchanger 113 and the first heat exchange pipeline 120 can be in contact or separated; this application does not limit this. For example, the heat exchange source 110 may also include a gas-liquid separator 115 connected in series with the compressor 111. The first heat exchanger 113 can be a liquid-cooled heat exchanger or an air heat exchanger 117. When the first heat exchanger 113 is a liquid-cooled heat exchanger, both ends of the first heat exchange pipeline 120 are connected to the liquid-cooled heat exchanger. The second heat exchanger 114 can also be a liquid-cooled heat exchanger or an air heat exchanger 117.

[0082] In this embodiment, the compressor 111, the four-way valve 112, the first heat exchanger 113, and the second heat exchanger 114 are connected in series to form a heat pump system. This heat pump system can not only raise the temperature of the fluid medium in the first heat exchange pipe 120 when the ambient temperature is low, but also cool the fluid medium in the first heat exchange pipe 120 when the ambient temperature is high, thereby solving the problem of shortened battery life and significantly reduced charging speed. Furthermore, the heat pump system can efficiently transfer heat, reducing energy consumption.

[0083] Please see Figure 1 In one optional embodiment, the second heat exchanger 114 is a liquid-cooled heat exchanger. For example, the liquid-cooled heat exchanger can be a plate heat exchanger. The heat source 110 also includes a second heat exchange pipeline 116 and an air heat exchanger 117. The second heat exchange pipeline 116 contains a fluid medium. Both ends of the second heat exchange pipeline 116 are connected to the second heat exchanger 114. The air heat exchanger 117 is connected in series with the second heat exchange pipeline 116.

[0084] The electric vehicle thermal management system also includes a third heat exchange pipeline 610, a valve assembly 620, and a charging device 630 for charging the electric vehicle. The third heat exchange pipeline 610 is connected in parallel with the second heat exchange pipeline 116, and the charging device 630 includes a power device 631, which is heat-transferringly connected to the third heat exchange pipeline 610.

[0085] Valve assembly 620 has a first state and a second state. When valve assembly 620 is in the first state, the fluid medium in the second heat exchange pipe 116 circulates within the second heat exchange pipe 116. When valve assembly 620 is in the second state, the fluid medium in the second heat exchange pipe 116 can enter the third heat exchange pipe 610, and after being heated by the power device 631, return to the second heat exchange pipe 116. For example, valve assembly 620 can be a three-way valve; or valve assembly 620 can include two two-way valves, thereby achieving the purpose of switching between the first and second states.

[0086] The specific heat exchange process in this embodiment is as follows: When the first heat exchanger 113 acts as an evaporator and the second heat exchanger 114 acts as a condenser, the valve assembly 620 can be in the first state. The working fluid of the heat pump system at the second heat exchanger 114 exchanges heat with the fluid medium in the second heat exchange pipeline 116, thereby reducing the temperature of the working fluid of the heat pump system at the second heat exchanger 114. The heat in the fluid medium in the second heat exchange pipeline 116 can be dissipated through the air heat exchanger 117.

[0087] When the first heat exchanger 113 acts as a condenser and the second heat exchanger 114 acts as an evaporator, the valve assembly 620 can be in a second state. The second heat exchange pipeline 116 is connected to the third heat exchange pipeline 610. The fluid medium in the second heat exchange pipeline 116 can enter the third heat exchange pipeline 610, and after being heated by the power device 631, it returns to the second heat exchange pipeline 116. Then, it exchanges heat with the working fluid in the heat pump system through the second heat exchanger 114, thereby increasing the temperature of the working fluid in the heat pump system at the second heat exchanger 114, thereby increasing the efficiency of the second heat exchanger 114, and thus the efficiency of the first heat exchanger 113 condenser, so that the first heat exchanger 113 can better heat the first heat exchange pipeline 120.

[0088] Please see Figure 2 In one optional embodiment, the heat exchange source 110 includes a constant temperature layer 118 located below ground level, with a portion of the first heat exchange pipe 120 passing through the constant temperature layer 118. It should be noted that the constant temperature layer 118 here is underground soil, formed by utilizing the characteristic that underground soil is less affected by air temperature. The constant temperature layer 118 here refers to an underground soil layer whose temperature fluctuation does not exceed 5 degrees Celsius with seasonal changes. Further, the temperature fluctuation of the constant temperature layer 118 with seasonal changes does not exceed 3 degrees Celsius or 1 degree Celsius.

[0089] In this embodiment, the heat exchange source 110 is the underground constant temperature layer 118, so there is no need to supply power to the heat exchange source 110, thereby reducing energy consumption.

[0090] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. An electric vehicle thermal management system, characterized by, The electric vehicle thermal management system is used to interface with an electric vehicle, which includes an on-board heat exchange circuit (700) for regulating the temperature of its own battery (820). The on-board heat exchange circuit (700) contains a fluid medium and is connected to an on-board docking terminal (711). The electric vehicle thermal management system includes: A temperature regulating device (100) includes a heat exchange source (110) and a first heat exchange pipeline (120). The heat exchange source (110) is heat-transfer connected to the first heat exchange pipeline (120) to regulate the temperature of the fluid medium in the first heat exchange pipeline (120). The first heat exchange pipeline (120) has a ground docking end (121) for docking with the vehicle docking end (711). After the ground docking end (121) docks with the vehicle docking end (711), the fluid medium in the vehicle heat exchange circuit (700) can enter the first heat exchange pipeline (120), and after the temperature is regulated by the heat exchange source (110), it returns to the vehicle heat exchange circuit (700) through the first heat exchange pipeline (120). A drive unit (200) is connected to the ground docking end (121) and is used to drive the ground docking end (121) to move toward the vehicle docking end (711).

2. The electric vehicle thermal management system of claim 1, wherein, The driving device (200) is used to drive the ground docking end (121) to move along the first horizontal direction, the second horizontal direction and the vertical direction respectively, so that the ground docking end (121) is close to the vehicle docking end (711), wherein the first horizontal direction is perpendicular to the second horizontal direction.

3. The electric vehicle thermal management system of claim 1, wherein, The vehicle docking terminal (711) includes a vehicle output terminal (712) and a vehicle input terminal (713), and the ground docking terminal (121) includes a ground output terminal (122) and a ground input terminal (123). The ground output terminal (122) is used to dock with the vehicle input terminal (713), and the ground input terminal (123) is used to dock with the vehicle output terminal (712). After the ground docking end (121) is docked with the vehicle docking end (711), the fluid medium in the vehicle heat exchange circuit (700) can enter the first heat exchange pipeline (120) through the vehicle output end (712) and the ground input end (123) in sequence, and after the temperature is adjusted by the heat exchange source (110), it returns to the vehicle heat exchange circuit (700) through the ground output end (122) and the vehicle input end (713) in sequence; Both the port of the ground output terminal (122) and the port of the ground input terminal (123) are positioned upwards.

4. The electric vehicle thermal management system of any one of claims 1-3, wherein, The electric vehicle thermal management system further includes a controller and a position detection device (300). The controller is communicatively connected to the position detection device (300) and the drive device (200) respectively. The position detection device (300) is used to detect the spatial position information of the vehicle docking end (711). The controller is used to control the drive device (200) to drive the ground docking end (121) to dock with the vehicle docking end (711) based on the spatial location information.

5. The electric vehicle thermal management system of claim 4, wherein, The electric vehicle thermal management system also includes a triggering device (400) located at the ground docking end (121), and the triggering device (400) is communicatively connected to the controller; The triggering device (400) is used to issue a trigger signal when the ground docking end (121) docks with the vehicle docking end (711); the controller is used to control the driving device (200) to stop driving the ground docking end (121) to move based on the trigger signal.

6. The electric vehicle thermal management system of claim 5, wherein, The electric vehicle thermal management system also includes a pressure detection device (500) located at the ground docking end (121). The pressure detection device (500) is communicatively connected to the controller and is used to detect the pressure value applied by the electric vehicle. The controller is used to control the drive device (200) to adjust the position of the ground docking end (121) based on the pressure value.

7. The electric vehicle thermal management system of claim 4, wherein, The position detection device (300) includes at least one of a lidar, a millimeter-wave radar, and an image acquisition device.

8. The electric vehicle thermal management system of claim 1, wherein, The heat exchange source (110) includes a compressor (111), a four-way valve (112), a first heat exchanger (113), and a second heat exchanger (114) connected in series to form a loop; The first heat exchanger (113) is heat-transfer connected to the first heat exchange pipeline (120).

9. The electric vehicle thermal management system of claim 8, wherein, The second heat exchanger (114) is a liquid-cooled heat exchanger. The heat source (110) also includes a second heat exchange pipeline (116) and an air heat exchanger (117). The second heat exchange pipeline (116) contains a fluid medium. Both ends of the second heat exchange pipeline (116) are connected to the second heat exchanger (114). The air heat exchanger (117) is connected in series with the second heat exchange pipeline (116). The electric vehicle thermal management system further includes a third heat exchange pipeline (610), a valve assembly (620), and a charging device (630) for charging the electric vehicle. The third heat exchange pipeline (610) is connected in parallel with the second heat exchange pipeline (116). The charging device (630) includes a power device (631), which is heat-transferringly connected to the third heat exchange pipeline (610). The valve assembly (620) has a first state and a second state. When the valve assembly (620) is in the first state, the fluid medium in the second heat exchange pipeline (116) circulates within the second heat exchange pipeline (116). When the valve assembly (620) is in the second state, the fluid medium in the second heat exchange pipeline (116) can enter the third heat exchange pipeline (610) and return to the second heat exchange pipeline (116) after being heated by the power device (631).

10. The electric vehicle thermal management system of claim 1, wherein, The heat exchange source (110) includes a constant temperature layer (118) located below the ground, and part of the first heat exchange pipeline (120) passes through the constant temperature layer (118).

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