Thermal management device, charging system and charging pile for electric vehicle

Abstract

The present disclosure proposes a thermal management device for an electric vehicle, the thermal management device comprising a connection device wherein the connection device comprises: an air inlet disposed on a first end thereof; the air outlet is formed in the second end of the shell; the channel is arranged in the connecting device and used for gas circulation, one end of the channel is the gas inlet, the other end of the channel is the gas outlet, the gas inlet is used for receiving gas, the temperature of the gas flowing in through the gas inlet is lower than the environment temperature of the environment where the thermal management device is located, and the temperature of the gas flowing in through the gas outlet is lower than the environment temperature of the environment where the thermal management device is located. The first end of the connecting device is used for being connected with or making contact with a grid of the electric vehicle, the second end of the connecting device is used for being connected with or making contact with the grid of the electric vehicle, and the edge of the second end of the connecting device can wrap the grid of the electric vehicle. And the temperature of gas flowing out of the gas outlet is lower than the environment temperature, so that components in the grating are cooled.

Description

Technical Field

[0001] The present disclosure relates to the field of electric vehicles, and more specifically, to a thermal management device for an electric vehicle, a charging system including the thermal management device for an electric vehicle, and a charging pile including the thermal management device for an electric vehicle or the above-mentioned charging system. Background Art

[0002] With the rapid development of pure electric vehicles and plug-in electric vehicle industries in the domestic and international automotive fields, and the increasingly comprehensive functional configurations of various vehicles, consumers are now placing higher and higher demands on the capacity of energy storage components, namely power battery packs. At the same time, consumers are also placing higher demands on charging speed and efficiency.

[0003] Household pure electric passenger cars generally need to be charged for one hour to meet the convenience requirements. With the breakthrough of the power distribution network and charging pile capabilities, it has become possible to shorten the charging time by increasing the charging power. However, the increase in charging power and charging current also puts forward higher requirements for battery thermal management. At present, when electric vehicles need to cool the power battery, they rely on the cooling capacity of the air conditioning system to achieve the purpose of heat dissipation.

[0004] As mentioned above, the existing battery cooling and heating functions are realized by relying on the air conditioning system of the electric vehicle itself to achieve refrigeration, thereby cooling the antifreeze, and then cooling the battery through the flow of the antifreeze.

[0005] The power battery cooling function of electric vehicles or hybrid vehicles currently on the market mainly includes two methods: passive cooling and active cooling. For passive cooling technology, when the ambient temperature is relatively low, the cooling circuits are connected in series through a four-way valve. The coolant, under the action of a water pump, brings the heat generated by the power battery to the radiator. The air flows through the radiator under the action of a fan, taking away the heat of the coolant flowing through the radiator, thereby cooling the power battery. For active cooling technology, when the ambient temperature is relatively high, it is impossible to directly dissipate the heat of the power battery through the radiator. At this time, the cooling circuit is connected in parallel through the switching of the four-way valve. The coolant flows through the heat exchanger to first transfer the heat in the power battery to the refrigerant in another circuit, and then to the external environment through the condenser. Under this condition, the cooling capacity of the battery will be limited by the ambient temperature. The higher the ambient temperature, the lower the cooling capacity.

[0006] When the vehicle is charged at high power, the power battery will generate a large amount of heat. If the heat cannot be removed in time, the charging power will be limited to ensure the safety of the power battery.

[0007] When charging in a high-temperature environment, the coolant in the cooling circuit, driven by the water pump, takes out the heat generated by the power battery, and transfers the heat to the refrigerant in another circuit through the heat exchanger. The refrigerant flows through the condenser driven by the compressor, and the ambient air flows through the condenser under the action of the fan, taking away the heat in the condenser. However, when the environment is too high, the difference between the temperature of the air flowing through the outside of the condenser and the temperature of the refrigerant flowing through the inside of the condenser decreases, resulting in a decrease in the cooling effect of the condenser, thereby affecting the cooling capacity of the power battery, causing the battery charging power to decrease, and then causing the time required for charging to increase. At this time, models with super fast charging may not be able to enter the super fast charging condition because the battery temperature is too high. Summary of the invention

[0008] In order to solve the above problem, the existing refrigeration power of temperature control achieved by using vehicle air conditioners cannot meet the requirements and is dependent on the ambient temperature, thereby affecting the overall temperature control effect of the power battery, which may have an adverse effect on the rapid charging of the power battery and may prolong the charging time, which is not conducive to the development of electric vehicles. The inventor of the present disclosure innovatively thought of using an external refrigeration system to reduce the ambient temperature of the environment in which the power battery is located, thereby accelerating the cooling speed of the power battery, ensuring that the rapid charging of the power battery can proceed smoothly, and thus making the cooling speed of the power battery pack reach an ideal state, increasing the charging power and shortening the charging time, and improving customer satisfaction and product competitiveness.

[0009] Based on this, a first aspect of the present disclosure proposes a thermal management device for an electric vehicle, the thermal management device comprising a connection device, wherein the connection device comprises:

[0010] an air inlet disposed on a first end thereof;

[0011] An air outlet disposed on a second end thereof; and

[0012] a channel for gas flow provided in the connecting device, one end of the channel being the gas inlet and the other end of the channel being the gas outlet,

[0013] The air inlet is used to receive gas, the temperature of the gas flowing in through the air inlet is lower than the ambient temperature of the environment in which the thermal management device is located, and the gas flows out from the air outlet after passing through the channel.

[0014] And wherein, the second end of the connecting device is used to connect or contact the grille of the electric vehicle, the edge of the second end of the connecting device can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet is lower than the ambient temperature, so as to cool the components in the grille.

[0015] In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device. The power battery is stored in this space, thereby accelerating the cooling process of the power battery to meet the cooling requirements during charging of the power battery, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved.

[0016] In one embodiment according to the present disclosure, the second end of the connecting device is constructed to be scalable, and its size can be adjusted according to the size of the grille. In this way, the thermal management device for electric vehicles according to the present disclosure can adapt to different vehicle front face sizes, expanding the application scenarios of the thermal management device for electric vehicles according to the present disclosure. Preferably, in one embodiment according to the present disclosure, the connecting device includes an outer frame and an inner frame, the outer frame is located outside the inner frame, the channel is arranged inside the inner frame, and the size of the inner frame is adjustable. More preferably, in one embodiment according to the present disclosure, the connecting device also includes an elastic member, the elastic member is arranged at the second end of the connecting device, and the elastic member is used to seal with the shell of the vehicle. Optionally or alternatively, in one embodiment according to the present disclosure, the connecting device also includes a sealing structure, which is arranged at the air outlet and is used to form a sealed connection between the air outlet and the grille.

[0017] In one embodiment according to the present disclosure, the thermal management device further comprises:

[0018] A flow rate control device is in fluid communication with the gas inlet and is configured to adjust a gas flow rate at the gas outlet.

[0019] In this way, the thermal management device for electric vehicles according to the contents of the present disclosure can provide gas with corresponding flow rates in a targeted manner according to the cooling needs of different vehicles at different ambient temperatures and different charging current sizes, so that the thermal management device for electric vehicles according to the contents of the present disclosure can more targetedly meet the cooling needs of the electric vehicles to be charged.

[0020] In order to obtain the target flow rate value, in one embodiment according to the present disclosure, the thermal management device also includes an input device, which is used to receive the target flow rate value, and the flow rate control device is used to adjust the gas flow rate at the outlet according to the target flow rate value.

[0021] In one embodiment according to the present disclosure, the thermal management device further comprises:

[0022] A refrigeration device is connected to the connection device and is configured to output gas with a temperature lower than the ambient temperature to the air inlet.

[0023] In this way, the thermal management device for electric vehicles according to the contents of the present disclosure can include an independent refrigeration device, so that it can provide gas below the ambient temperature without relying on the operation of an external refrigerator, thereby further expanding the application scenarios of the thermal management device for electric vehicles according to the contents of the present disclosure.

[0024] Preferably, in one embodiment according to the present disclosure, the thermal management device further comprises a control module, the control module is connected to the refrigeration device, and is configured to adjust the temperature of the gas outputted from the refrigeration device to the air inlet. In order to obtain a target temperature value, in one embodiment according to the present disclosure, the thermal management device further comprises an input device, the input device is used to receive a target temperature value, and the control module is used to adjust the temperature of the gas outputted from the refrigeration device to the air inlet according to the target temperature value.

[0025] In one embodiment according to the present disclosure, the refrigeration device includes a compressor, an evaporator, a condenser, and a refrigerant pipeline for connecting the compressor, the evaporator and the condenser. In this way, the thermal management device according to the present disclosure also has a refrigerant pipeline, so that the temperature of the gas entering the connecting device can be further optimized and adjusted. Here, one connecting device can be used as one refrigeration device, or two or three connecting devices can share one refrigeration device. In summary, in one embodiment according to the present disclosure, one refrigeration device is connected to one connecting device, or one refrigeration device is connected to at least two connecting devices.

[0026] In one embodiment according to the present disclosure, the thermal management device further comprises a moving device, which is disposed on the connecting device and is configured to adjust the position of the connecting device relative to the grille of the electric vehicle. In this way, the thermal management device for an electric vehicle according to the present disclosure can be moved to the position of the electric vehicle to be charged after determining the position of the electric vehicle to be charged, so that the connecting device can be conveniently mechanically connected thereto.

[0027] In one embodiment according to the present disclosure, the thermal management device further includes: a locking device, which locks the connecting device when the connecting device reaches a predetermined position. In this way, the thermal management device for an electric vehicle according to the present disclosure can move to the position of the electric vehicle to be charged after determining the position of the electric vehicle, and then facilitate the mechanical connection of the connecting device therewith. Then, in order to further improve the effect of the connection, the connecting device can be locked by means of the locking device.

[0028] In one embodiment according to the present disclosure, the thermal management device further includes a communication module and a control module, wherein the communication module is used to obtain the position information of the electric vehicle, and the control module is used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille. In this way, the thermal management device for electric vehicles according to the present disclosure can obtain the position information of the electric vehicle to be charged, so that the connecting device can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. Preferably, in one embodiment according to the present disclosure, the communication module is also configured to obtain the size information of the grille, and the control module is also used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

[0029] In one embodiment according to the present disclosure, the thermal management device further includes an image acquisition device and a control module, wherein the image acquisition device is configured to acquire image information of the electric vehicle, and the control module acquires position information of the electric vehicle according to the image information of the electric vehicle, and the control module is further used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille. In this way, the thermal management device for electric vehicles according to the present disclosure can acquire position information of the electric vehicle to be charged, so that the connecting device can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. Preferably, in one embodiment according to the present disclosure, the control module is further used to acquire size information of the grille of the electric vehicle according to the image information of the electric vehicle, and the control module is further used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille. In this way, the thermal management device for electric vehicles according to the contents of the present disclosure can dynamically determine the size of the front air intake grille of the electric vehicle to be charged according to the acquired picture after determining the position of the electric vehicle to be charged, so that the connecting device can conveniently adapt the size and be mechanically connected thereto.

[0030] In one embodiment according to the present disclosure, the thermal management device further includes an input device and a control module, wherein the input device is configured to receive position information of the electric vehicle, and the control module is further configured to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille. Preferably, in one embodiment according to the present disclosure, the input device is further configured to receive size information of the grille, and the control module is further configured to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

[0031] In addition, a second aspect of the present disclosure provides a charging pile, which includes the thermal management device provided according to the first aspect of the present disclosure.

[0032] Furthermore, a third aspect of the present disclosure proposes a charging system, which includes the thermal management device proposed according to the first aspect of the present disclosure or the charging pile proposed according to the second aspect of the present disclosure.

[0033] To sum up, in the thermal management device, charging system or charging pile for electric vehicles according to the contents of the present disclosure, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device. The power battery is stored in this space, thereby accelerating the cooling process of the power battery to meet the cooling requirements during charging of the power battery, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The features, advantages and other aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown in an exemplary and non-limiting manner. In the accompanying drawings:

[0035] Figure 1 An exemplary block diagram of a thermal management device according to an embodiment of the present disclosure is shown;

[0036] Figure 2 An exemplary block diagram of a thermal management device according to another embodiment of the present disclosure is shown;

[0037] Figure 3 An exemplary block diagram showing a thermal management device according to yet another embodiment of the present disclosure; and

[0038] Figure 4An exemplary block diagram of a charging system according to one embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0039] The various exemplary embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Although the exemplary methods and devices described below include software and / or firmware executed on hardware among other components, it should be noted that these examples are merely illustrative and should not be considered restrictive. For example, it is considered that any or all hardware, software, and firmware components can be implemented exclusively in hardware, exclusively in software, or in any combination of hardware and software. Therefore, although exemplary methods and devices have been described below, it should be readily understood by those skilled in the art that the examples provided are not intended to limit the manner in which these methods and devices are implemented.

[0040] In addition, the flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the methods and systems according to the various embodiments of the present disclosure. It should be noted that the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession may actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the flowchart and / or block diagram, and the combination of boxes in the flowchart and / or block diagram, may be implemented using a dedicated hardware-based system that performs a specified function or operation, or may be implemented using a combination of dedicated hardware and computer instructions.

[0041] The terms "including", "comprising" and similar terms used herein are open terms, i.e., "including / including but not limited to", indicating that other contents may also be included. The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment", etc.

[0042] As mentioned above, the cooling power of the temperature control achieved by the vehicle air conditioner in the prior art cannot meet the requirements and is dependent on the ambient temperature, thereby affecting the overall temperature control effect on the power battery, which in turn may have an adverse effect on the rapid charging of the power battery and may prolong the charging time, which is not conducive to the development of electric vehicles.

[0043] In order to solve the above technical problems, the inventors of the present disclosure innovatively thought of using an external refrigeration system to lower the ambient temperature of the environment in which the power battery is located, thereby speeding up the cooling speed of the power battery and ensuring that the power battery can be quickly charged smoothly, thereby making the cooling speed of the power battery pack reach an ideal state, increasing the charging power and shortening the charging time, thereby improving customer satisfaction and product competitiveness. Abstractly speaking, the present disclosure proposes a thermal management device for an electric vehicle, the thermal management device comprising a connecting device, wherein the connecting device comprises: an air inlet arranged on a first end thereof; an air outlet arranged on a second end thereof; a channel for gas circulation arranged in the connecting device, one end of the channel being the air inlet and the other end of the channel being the air outlet, wherein the air inlet is used to receive gas, the temperature of the gas flowing in through the air inlet is lower than the ambient temperature of the environment in which the thermal management device is located, and the gas flows out of the air outlet after passing through the channel, and wherein the second end of the connecting device is used to connect or contact the grille of the electric vehicle, the edge of the second end of the connecting device can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet is lower than the ambient temperature, so as to cool the components in the grille. In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device. The power battery is stored in this space, thereby accelerating the cooling process of the power battery to meet the cooling requirements during charging of the power battery, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved.

[0044] The following will describe the thermal management device, charging pile and corresponding charging system according to the present disclosure in conjunction with the accompanying drawings. Figure 1 An exemplary block diagram of a thermal management device according to an embodiment of the present disclosure is shown. Figure 2 FIG. 1 shows an exemplary block diagram of a thermal management device according to another embodiment of the present disclosure. Figure 3 : shows an exemplary block diagram of a thermal management device according to another embodiment of the present disclosure, and Figure 4 An exemplary block diagram of a charging system according to one embodiment of the present disclosure is shown.

[0045] from Figure 1 It can be seen that the thermal management device 100 for an electric vehicle according to the present disclosure at least includes a connecting device 110, wherein the connecting device 110 includes a first end (e.g. Figure 1 The air inlet 111 is arranged at the left end of the Figure 1The thermal management device 100 further comprises a plurality of connecting devices 110 and a plurality of connecting devices 110, wherein the connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. The connecting device 110 comprises a plurality of connecting devices 110 and a plurality of connecting devices 110. In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device 110. The power battery is stored in this space, thereby accelerating the cooling process of the power battery to meet the cooling requirements during charging of the power battery, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved.

[0046] Here, the temperature of the gas entering through the air inlet is lower than the ambient temperature of the environment in which the thermal management device is located. For example, the gas can be extracted from the basement of a building or from other locations where the temperature is lower than the current ambient temperature. The temperature of the gas at these locations is lower than the current ambient temperature. That is, the thermal management device according to the present disclosure includes at least one connecting device 110, which is used to adapt to the grille of the electric vehicle and on one side of the connecting device 110 (for example, Figure 1 An air outlet 112 in fluid communication with the air inlet 111 is provided on the right side of the connecting device 110, wherein the outer contour of the air outlet 112 of the connecting device 110 (for example, an elastic body with a peripheral shape and size that can be adjusted) can cover the grille and output gas below the ambient temperature through the air outlet 112. Here, the air outlet 112 can be set as a small opening on the outer shell of the connecting device 110, or it can be designed as an air outlet of a size corresponding to the opening formed by the elastomer covering the grille. Preferably, in order to adapt to the different sizes of the air intake grilles on the front faces of different electric vehicles to be charged, the connecting device 110 is close to a side of the electric vehicle (for example Figure 1 The right side of the grille is configured to be scalable, and its size can be adapted according to the size of the grille. In this way, the thermal management device 100 for electric vehicles according to the present disclosure can adapt to different vehicle front face sizes, expanding the application scenarios of the thermal management device 100 for electric vehicles according to the present disclosure.

[0047] In addition, since different electric vehicles to be charged have different cooling requirements, corresponding control modules or control devices can also be designed, which are designed as flow rate control devices (not shown in the figure), for example, which are connected to the air inlet fluid and are configured to adjust the gas flow rate at the air outlet. In this way, the thermal management device for electric vehicles according to the present disclosure can provide gas with corresponding flow rates in a targeted manner according to the cooling requirements of different vehicles at different ambient temperatures and different charging currents, so that the thermal management device for electric vehicles according to the present disclosure can more targetedly meet the cooling requirements of electric vehicles to be charged.

[0048] Furthermore, in order to further control the temperature of air entering the thermal management device according to the present disclosure, the thermal management device according to the present disclosure can also include a refrigeration device. Figure 2 FIG. 2 shows an exemplary block diagram of a thermal management device according to another embodiment of the present disclosure. Figure 2 It can be seen that the thermal management device according to the present disclosure mainly includes two parts. First, the thermal management device 200 according to the present disclosure includes a connecting device 210, and the connecting device 210 includes a first end (e.g. Figure 2 The air inlet 211 is arranged at the left end of the Figure 2The thermal management device 200 is provided with an air outlet 212 on the right end thereof (as shown in the figure), and a channel 213 for gas circulation arranged in the connecting device 210, one end of the channel 213 is the air inlet 211 and the other end of the channel 213 is the air outlet 212, wherein the air inlet 211 is used to receive gas, the temperature of the gas flowing in through the air inlet 211 is lower than the ambient temperature of the environment in which the thermal management device 200 is located, and the gas flows out from the air outlet 212 after passing through the channel 213, and wherein the second end of the connecting device 210 is used to connect or contact the grille of the electric vehicle (not shown in the figure), the edge of the second end of the connecting device 210 can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet 212 is lower than the ambient temperature, so as to cool the components in the grille. In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device 210, in which the power battery is stored, so that the cooling process of the power battery can be accelerated to meet the cooling requirements of the power battery during charging, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved. In addition, secondly, the thermal management device 200 also includes a refrigeration device 220, the refrigeration device 220 is connected to the connecting device 210, for example, through a pipeline 222, and the refrigeration device 220 is configured to output gas below the ambient temperature to the air inlet 211. In this way, the thermal management device 200 for electric vehicles according to the present disclosure can include an independent refrigeration device 220, so that it can provide gas below the ambient temperature without relying on the operation of the external refrigerator, thereby further expanding the application scenario of the thermal management device 200 for electric vehicles according to the present disclosure.

[0049] In order to enable the connection device 210 to better cover the air intake grille of the electric vehicle to be charged, the right side of the shell of the connection device 210 can, for example, include an outer frame (such as the surrounding of the air outlet 212) and an inner frame (the shell part forming the air outlet 212), wherein the outer frame is located on the outside of the inner frame, and the channel 213 is arranged inside the inner frame, and the size of the inner frame is adjustable. In order to further improve the sealing between the connection device 210 and the electric vehicle to be charged, and thereby improve the utilization rate of the gas used for cooling, the connection device 210 also includes a sealing structure (not shown in the figure), which is arranged at the air outlet 212 and is used to form a sealed connection between the air outlet 212 and the grille. Specifically, the sealing structure is, for example, constructed as an elastic member. At this time, the connection device 210 also includes an elastic member (not shown in the figure), which is arranged at the second end ( Figure 2 The right end portion in the figure), the elastic member is used to seal with the shell of the vehicle.

[0050] In order to obtain the target flow rate value, in one embodiment according to the present disclosure, the thermal management device 200 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target flow rate value, and the flow rate control device is used to adjust the gas flow rate at the outlet 212 according to the target flow rate value.

[0051] In addition, the thermal management device 200 can also include, for example, a control module (such as a microcontroller MCU), which is connected to the refrigeration device 220 and is configured to adjust the temperature of the gas output by the refrigeration device 220 to the air inlet 211. In order to obtain a target temperature value, the thermal management device 200 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target temperature value, and the control module is used to adjust the temperature of the gas output by the refrigeration device 220 to the air inlet 211 via the pipeline 222 according to the target temperature value.

[0052] The structure of the refrigeration device 220 according to the present disclosure will be further described below. Here, the refrigeration device 220 includes a compressor, an evaporator, a condenser, and a refrigerant pipeline for connecting the compressor, the evaporator and the condenser. In this way, the thermal management device according to the present disclosure also has a refrigerant pipeline, so that the temperature of the gas entering the connecting device 210 can be further optimized and adjusted. Here, one connecting device 210 can be used as one refrigeration device 220, or two or three connecting devices 210 can share one refrigeration device 220. In summary, in an embodiment according to the present disclosure, one refrigeration device 220 is connected to one connecting device 210, or one refrigeration device 220 is connected to at least two connecting devices 210.

[0053] In order to achieve the adjustment of the position of the connecting device according to the present disclosure, Figure 3 FIG. 2 shows an exemplary block diagram of a thermal management device 300 according to another embodiment of the present disclosure. Figure 3 It can be seen that the thermal management device according to the present disclosure mainly includes two parts. First, the thermal management device 300 according to the present disclosure includes a connecting device 310, and the connecting device 310 includes a first end (e.g. Figure 3 The air inlet 311 is arranged at the left end of the Figure 3The thermal management device 300 is provided with an air outlet 312 on the right end thereof (as shown in the figure), and a channel 313 for gas circulation arranged in the connecting device 310, one end of the channel 313 is the air inlet 311 and the other end of the channel 313 is the air outlet 312, wherein the air inlet 311 is used to receive gas, the temperature of the gas flowing in through the air inlet 311 is lower than the ambient temperature of the environment in which the thermal management device 300 is located, and the gas flows out from the air outlet 312 after passing through the channel 313, and wherein the second end of the connecting device 310 is used to connect or contact the grille of the electric vehicle (not shown in the figure), the edge of the second end of the connecting device 310 can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet 312 is lower than the ambient temperature, so as to cool the components in the grille. In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device 310, in which the power battery is stored, so that the cooling process of the power battery can be accelerated to meet the cooling requirements of the power battery during charging, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved. In addition, secondly, the thermal management device 300 also includes a refrigeration device 320, the refrigeration device 320 is connected to the connecting device 310, for example, through a pipeline 322, and the refrigeration device 320 is configured to output gas below the ambient temperature to the air inlet 311. In this way, the thermal management device 300 for electric vehicles according to the present disclosure can include an independent refrigeration device 320, so that it can provide gas below the ambient temperature without relying on the operation of the external refrigerator, thereby further expanding the application scenario of the thermal management device 300 for electric vehicles according to the present disclosure.

[0054] In order to enable the connection device 310 to better cover the air intake grille of the electric vehicle to be charged, the right side of the shell of the connection device 310 can, for example, include an outer frame (such as the surrounding of the air outlet 312) and an inner frame (the shell part forming the air outlet 312), wherein the outer frame is located on the outside of the inner frame, and the channel 313 is arranged inside the inner frame, and the size of the inner frame is adjustable. In order to further improve the sealing between the connection device 310 and the electric vehicle to be charged, and thereby improve the utilization rate of the gas used for cooling, the connection device 310 also includes a sealing structure (not shown in the figure), which is arranged at the air outlet 312 and is used to form a sealed connection between the air outlet 312 and the grille. Specifically, the sealing structure is, for example, constructed as an elastic member. At this time, the connection device 310 also includes an elastic member (not shown in the figure), which is arranged at the second end ( Figure 3 The right end portion in the figure), the elastic member is used to seal with the shell of the vehicle.

[0055] In order to obtain the target flow rate value, in one embodiment according to the present disclosure, the thermal management device 300 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target flow rate value, and the flow rate control device is used to adjust the gas flow rate at the outlet 312 according to the target flow rate value.

[0056] In addition, the thermal management device 300 can also include, for example, a control module (such as a microcontroller MCU), which is connected to the refrigeration device 320 and is configured to adjust the temperature of the gas output by the refrigeration device 320 to the air inlet 311. In order to obtain a target temperature value, the thermal management device 300 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target temperature value, and the control module is used to adjust the temperature of the gas output by the refrigeration device 320 to the air inlet 311 via the pipeline 322 according to the target temperature value.

[0057] The structure of the refrigeration device 320 according to the present disclosure will be further described below. Here, the refrigeration device 320 includes a compressor, an evaporator, a condenser, and a refrigerant pipeline for connecting the compressor, the evaporator and the condenser. In this way, the thermal management device according to the present disclosure also has a refrigerant pipeline, so that the temperature of the gas entering the connecting device 310 can be further optimized and adjusted. Here, one connecting device 310 can be used with one refrigeration device 320, or two or three connecting devices 310 can share one refrigeration device 320. In summary, in one embodiment according to the present disclosure, one refrigeration device 320 is connected to one connecting device 310, or one refrigeration device 320 is connected to at least two connecting devices 310. In other words, generally speaking, one charging pile needs to be equipped with one connecting device, but multiple charging piles can share one cold source, that is, one common refrigeration device.

[0058] In addition, the thermal management device 300 also includes a moving device 330 (for example, a roller shown in the figure), which is arranged on the connecting device 310 (for example, at the bottom of the connecting device 310 in the figure) and is configured to adjust the position of the connecting device 310 relative to the grille of the electric vehicle (not shown in the figure). In this way, the thermal management device 300 for electric vehicles according to the present disclosure can be moved to the position of the electric vehicle to be charged after determining the position of the electric vehicle to be charged, so that the connecting device 310 can be conveniently mechanically connected thereto. For example, the movable cold air module is integrated with a travel mechanism 330, which is driven by a built-in motor and can automatically move according to the position of the charging vehicle detected by the camera of the vehicle cover assembly, ensuring that the vehicle grille cover assembly and the charging vehicle grille are aligned, and providing a retaining force between the vehicle grille cover assembly and the charging vehicle grille, ensuring the sealing between the vehicle grille cover assembly and the charging vehicle grille during operation. The movable cold air module and the refrigeration unit are connected by an elastic pipe 322 to ensure that the movable cold air module can move within the designed range to meet the mobility requirements of different vehicle models and different parking positions; the outside of the elastic pipe 322 is protected by a bellows to ensure that the internal elastic pipe 322 is not worn or damaged.

[0059] After being able to move, it is preferably possible for the thermal management device 300 to also include a locking device (for example, a bearing pin capable of locking the above-mentioned roller, which can stop the roller from rotating), and the locking device locks the connecting device when the connecting device 310 reaches a predetermined position. In this way, the thermal management device 300 for an electric vehicle according to the present disclosure can be moved to the position of the electric vehicle to be charged after determining the position of the electric vehicle to be charged, and then the connecting device can be conveniently mechanically connected thereto. Then, in order to further improve the effect of the connection, the connecting device can be locked with the aid of a locking device.

[0060] In addition, the thermal management device 300 also includes a communication module (e.g., a communication chip) and a control module (e.g., a microcontroller chip MCU), wherein the communication module is used to obtain the position information of the electric vehicle, and the control module is used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille. In this way, the thermal management device for electric vehicles according to the present disclosure can obtain the position information of the electric vehicle to be charged, so that the connecting device can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. For example, the communication module can be used to communicate and connect with smart devices such as mobile phones and PADs, and then the thermal management device according to the present disclosure can be set through these smart devices. Preferably, in one embodiment according to the present disclosure, the communication module is also configured to obtain the size information of the grille, and the control module is also used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

[0061] In one embodiment according to the present disclosure, the thermal management device 300 further includes an image acquisition device (not shown in the figure), such as a camera and a control module, wherein the image acquisition device is configured to acquire image information of the electric vehicle, and the control module acquires the position information of the electric vehicle according to the image information of the electric vehicle, and the control module is further configured to control the moving device 330 to drive the connecting device 310 to move according to the position information, so that the connecting device 310 is connected or in contact with the grille. In this way, the thermal management device 300 for electric vehicles according to the present disclosure can acquire the position information of the electric vehicle to be charged, so that the connecting device 310 can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. For example, such a thermal management device 300 with a camera can be set around the charging pile. When it is detected that an electric vehicle to be charged is approaching, the specific position of the electric vehicle to be charged can be analyzed based on the picture or image taken by the camera, and then the connecting device 310 can be moved to a relatively close position, and then mechanically connected with it to ensure that the gas output from the outlet 312 can enter the grille of the electric vehicle to be charged.

[0062] Preferably, in an embodiment according to the present disclosure, the control module is further used to obtain the size information of the grille of the electric vehicle according to the image information of the electric vehicle, and the control module is further used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device 310 is adapted to the grille. In this way, the thermal management device 300 for electric vehicles according to the present disclosure can dynamically determine the size of the front air intake grille of the electric vehicle to be charged according to the acquired picture after determining the position of the electric vehicle to be charged, so that the connecting device 310 can conveniently adapt the size and be mechanically connected thereto.

[0063] In order to facilitate the input of target parameters, the thermal management device 300 includes an input device (not shown in the figure, such as a touch screen), through which the desired flow rate and temperature value can be obtained. Here, the input device is, for example, a touch screen, a button, or input via a keyboard or an intelligent device connected to the thermal management device for communication. In this way, the required input, that is, the desired flow rate and temperature value can be input into the thermal management device according to the content of the present disclosure in a targeted manner. Specifically, the user can select automatic control (the movable coolant module provides a wind speed of 2m / s and an outlet air temperature of 25°C by default) or manually set the required refrigeration capacity on the operation panel according to the needs (the refrigeration capacity can be divided into three levels of low / middle / high or the user can manually adjust the required outlet air speed and outlet air temperature). The control component controls the operation of the refrigeration unit and the movable cold air module according to the user's set value, and provides the refrigeration capacity, outlet air temperature and outlet air speed set or required by the user. The control module integrates a remote control function, and the user can establish a connection with the auxiliary thermal management device by downloading the APP, which can realize the function of mobile phone reservation or direct control by mobile phone.

[0064] The above example is that the thermal management device according to the present disclosure includes an independent refrigeration device. Of course, those skilled in the art should understand that the refrigeration device can also reuse existing refrigeration devices, such as the cold air generated by the central air conditioner of the building. Figure 4 FIG. 4 shows an exemplary block diagram of a thermal management device 400 according to another embodiment of the present disclosure. Figure 4 It can be seen that the thermal management device according to the present disclosure mainly includes two parts. First, the thermal management device 400 according to the present disclosure includes a connecting device 410, and the connecting device 410 includes a first end (e.g. Figure 4 The air inlet 411 is arranged at the left end of the Figure 4The thermal management device 400 is provided with an air outlet 412 on the right end thereof (as shown in the figure), and a channel 413 for gas circulation arranged in the connecting device 410, one end of the channel 413 is the air inlet 411 and the other end of the channel 413 is the air outlet 412, wherein the air inlet 411 is used to receive gas, the temperature of the gas flowing in through the air inlet 411 is lower than the ambient temperature of the environment in which the thermal management device 400 is located, and the gas flows out from the air outlet 412 after passing through the channel 413, and wherein the second end of the connecting device 410 is used to connect or contact the grille of the electric vehicle (not shown in the figure), the edge of the second end of the connecting device 410 can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet 412 is lower than the ambient temperature, so as to cool the components in the grille. In this way, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device 410, in which the power battery is stored, so as to accelerate the cooling process of the power battery to meet the cooling requirements when the power battery is charged, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved. In addition, secondly, the thermal management device 400 also includes a refrigeration device 420, which is connected to the connecting device 410, for example, by a pipeline 422, and the refrigeration device 420 is configured to output gas with a temperature lower than the ambient temperature to the air inlet 411.

[0065] In order to enable the connection device 410 to better cover the air intake grille of the electric vehicle to be charged, the right side of the shell of the connection device 410 can, for example, include an outer frame (such as the surrounding of the air outlet 412) and an inner frame (the shell part forming the air outlet 412), wherein the outer frame is located on the outside of the inner frame, and the channel 413 is arranged inside the inner frame, and the size of the inner frame is adjustable. In order to further improve the sealing between the connection device 410 and the electric vehicle to be charged, and thereby improve the utilization rate of the gas used for cooling, the connection device 410 also includes a sealing structure (not shown in the figure), which is arranged at the air outlet 412 and is used to form a sealed connection between the air outlet 412 and the grille. Specifically, the sealing structure is, for example, constructed as an elastic member. At this time, the connection device 410 also includes an elastic member (not shown in the figure), which is arranged at the second end ( Figure 3 The right end portion in the figure), the elastic member is used to seal with the shell of the vehicle.

[0066] In order to obtain the target flow rate value, in one embodiment according to the present disclosure, the thermal management device 400 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target flow rate value, and the flow rate control device is used to adjust the gas flow rate at the outlet 412 according to the target flow rate value.

[0067] In addition, the thermal management device 400 can also include, for example, a control module (such as a microcontroller MCU), which is connected to the refrigeration device 420 and is configured to adjust the temperature of the gas output by the refrigeration device 420 to the air inlet 411. In order to obtain a target temperature value, the thermal management device 400 also includes an input device (not shown in the figure, such as a touch screen), which is used to receive the target temperature value, and the control module is used to adjust the temperature of the gas output by the refrigeration device 420 to the air inlet 411 via the pipeline 422 according to the target temperature value.

[0068] In addition, the thermal management device 400 also includes a moving device 430 (for example, a roller shown in the figure), which is arranged on the connecting device 410 (for example, at the bottom of the connecting device 410 in the figure) and is configured to adjust the position of the connecting device 410 relative to the grille of the electric vehicle (not shown in the figure). In this way, the thermal management device 400 for electric vehicles according to the present disclosure can be moved to the position of the electric vehicle to be charged after determining the position of the electric vehicle to be charged, so that the connecting device 410 can be conveniently mechanically connected thereto. For example, the movable cold air module is integrated with a travel mechanism 430, which is driven by a built-in motor and can automatically move according to the position of the charging vehicle detected by the camera of the vehicle covering assembly, ensure the alignment of the vehicle grille covering assembly and the charging vehicle grille, and provide a retaining force between the vehicle grille covering assembly and the charging vehicle grille, ensuring the sealing between the vehicle grille covering assembly and the charging vehicle grille during operation. The movable cold air module and the refrigeration unit are connected by an elastic pipe 422 to ensure that the movable cold air module can move within the designed range to meet the mobility requirements of different vehicle models and different parking positions; the outside of the elastic pipe 422 is protected by a bellows to ensure that the internal elastic pipe 422 is not worn or damaged.

[0069] After being able to move, it is preferably possible for the thermal management device 400 to also include a locking device (e.g., a bearing pin capable of locking the above-mentioned roller, which can stop the roller from rotating), which locks the connecting device 410 when it reaches a predetermined position. In this way, the thermal management device 400 for an electric vehicle according to the present disclosure can be moved to the position of the electric vehicle to be charged after determining the position of the electric vehicle to be charged, and then the connecting device can be conveniently mechanically connected thereto. Then, in order to further improve the effect of the connection, the connecting device can be locked by means of a locking device.

[0070] In addition, the thermal management device 400 also includes a communication module (e.g., a communication chip) and a control module (e.g., a microcontroller chip MCU), wherein the communication module is used to obtain the position information of the electric vehicle, and the control module is used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille. In this way, the thermal management device for electric vehicles according to the present disclosure can obtain the position information of the electric vehicle to be charged, so that the connecting device can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. For example, the communication module can be used to communicate and connect with smart devices such as mobile phones and PADs, and then the thermal management device according to the present disclosure can be set through these smart devices. Preferably, in one embodiment according to the present disclosure, the communication module is also configured to obtain the size information of the grille, and the control module is also used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

[0071] In one embodiment according to the present disclosure, the thermal management device 400 further includes an image acquisition device (not shown in the figure), such as a camera and a control module, wherein the image acquisition device is configured to acquire image information of the electric vehicle, and the control module acquires position information of the electric vehicle according to the image information of the electric vehicle, and the control module is further configured to control the moving device 430 to drive the connecting device 410 to move according to the position information, so that the connecting device 410 is connected or in contact with the grille. In this way, the thermal management device 400 for electric vehicles according to the present disclosure can acquire the position information of the electric vehicle to be charged, so that the connecting device 410 can be conveniently moved to the position of the electric vehicle and mechanically connected thereto. For example, such a thermal management device 400 with a camera can be set around the charging pile. When it is detected that an electric vehicle to be charged is approaching, the specific position of the electric vehicle to be charged can be analyzed based on the picture or image taken by the camera, and then the connecting device 410 can be moved to a relatively close position, and then mechanically connected with it to ensure that the gas output from the outlet 412 can enter the grille of the electric vehicle to be charged.

[0072] Preferably, in an embodiment according to the present disclosure, the control module is further used to obtain the size information of the grille of the electric vehicle according to the image information of the electric vehicle, and the control module is further used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device 410 is adapted to the grille. In this way, the thermal management device 400 for electric vehicles according to the present disclosure can dynamically determine the size of the front air intake grille of the electric vehicle to be charged according to the acquired picture after determining the position of the electric vehicle to be charged, so that the connecting device 410 can conveniently adapt the size and be mechanically connected thereto.

[0073] In order to facilitate the input of target parameters, the thermal management device 400 includes an input device (not shown in the figure, such as a touch screen), through which the desired flow rate and temperature value can be obtained. Here, the input device is, for example, a touch screen, a button, or input via a keyboard or an intelligent device connected to the thermal management device for communication. In this way, the required input, that is, the desired flow rate and temperature value can be input into the thermal management device according to the content of the present disclosure in a targeted manner. Specifically, the user can select automatic control (the movable coolant module provides a wind speed of 2m / s and an outlet air temperature of 25°C by default) or manually set the required refrigeration capacity on the operation panel according to the needs (the refrigeration capacity can be divided into three levels of low / middle / high or the user can manually adjust the required outlet air speed and outlet air temperature). The control component controls the operation of the refrigeration unit and the movable cold air module according to the user's set value, and provides the refrigeration capacity, outlet air temperature and outlet air speed set or required by the user. The control module integrates a remote control function, and the user can establish a connection with the auxiliary thermal management device by downloading the APP, which can realize the function of mobile phone reservation or direct control by mobile phone.

[0074] and Figure 3 The difference is that Figure 4 The thermal management device 400 shown does not have its own independent refrigeration device, but instead its air inlet 411 is connected to a cold air duct 422 of a building central air conditioner 420 with cold air, so that gas below the ambient temperature can be obtained. This not only saves the manufacturing cost of the thermal management device 400 according to the contents of the present disclosure, but also improves the efficiency of refrigeration and solves the cost of refrigeration. At this time, the thermal management device 400 can be arranged close to the charging pile 440 and can be shared by multiple nearby charging piles 440. After the electric vehicle is connected to the charging pile 440 and the thermal management device 400, the thermal management device 400 will automatically identify the charging pile for charging according to the position of the movable cold air module, and the energy consumption cost generated will be included in the charging pile for charging the vehicle.

[0075] The structure of the refrigeration device 420 according to the contents of the present disclosure will be further described below. Here, the refrigeration device 420 includes a compressor, an evaporator, a condenser, and a refrigerant pipeline for connecting the compressor, the evaporator and the condenser. In this way, the thermal management device according to the contents of the present disclosure also has a refrigerant pipeline, so that the temperature of the gas entering the connecting device 410 can be further optimized and adjusted. Here, one connecting device 410 can use one refrigeration device 420, or two or three connecting devices 410 can share one refrigeration device 420. In summary, in one embodiment according to the contents of the present disclosure, one refrigeration device 420 is connected to one connecting device 410, or one refrigeration device 420 is connected to at least two connecting devices 410. In other words, generally speaking, one charging pile needs to be equipped with one connecting device, but multiple charging piles can share one cold source, that is, a common refrigeration device. As Figure 4 As shown, the refrigeration device 420 does not correspond one-to-one with the connection device 410 or is used exclusively by the connection device 410, but shares the refrigeration device of other connection devices 410 or charging piles 440, or even shares the refrigeration facilities of a building.

[0076] In addition, the second aspect of the present disclosure provides a charging pile, which includes the thermal management device provided according to the first aspect of the present disclosure. That is, the thermal management device can be integrated with the charging pile, so that the charging pile also has an additional thermal management function.

[0077] In addition, the above-mentioned thermal management device can also be constructed relatively independently from the charging pile, but can cooperate with each other during specific work, that is, the present disclosure also proposes a charging system, which includes the thermal management device proposed according to the first aspect of the present disclosure or the charging pile proposed according to the second aspect of the present disclosure.

[0078] To sum up, in the thermal management device, charging system or charging pile for electric vehicles according to the contents of the present disclosure, the gas outside the vehicle with a lower temperature than the ambient temperature can be input into the space behind the grille of the vehicle under the action of the connecting device. The power battery is stored in this space, thereby accelerating the cooling process of the power battery to meet the cooling requirements during charging of the power battery, so that the cooling speed of the power battery pack reaches an ideal state, the charging power is increased, the charging time is shortened, and customer satisfaction and product competitiveness are improved.

[0079] Although the embodiments of the present disclosure have been described with reference to several specific embodiments, it should be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended claims. The scope of the claims is consistent with the broadest interpretation, thereby including all such modifications and equivalent structures and functions.

Claims

1. A thermal management device for an electric vehicle, characterized in that: The thermal management device comprises a connecting device, wherein the connecting device comprises: an air inlet disposed on a first end thereof; An air outlet disposed on a second end thereof; and a channel for gas flow provided in the connecting device, one end of the channel being the gas inlet and the other end of the channel being the gas outlet, The air inlet is used to receive gas, the temperature of the gas flowing in through the air inlet is lower than the ambient temperature of the environment in which the thermal management device is located, and the gas flows out from the air outlet after passing through the channel. And wherein, the second end of the connecting device is used to connect or contact the grille of the electric vehicle, the edge of the second end of the connecting device can cover the grille of the electric vehicle, and the temperature of the gas flowing out through the air outlet is lower than the ambient temperature, so as to cool the components in the grille.

2. The thermal management device according to claim 1, characterized in that: The second end of the connecting device is configured to be scalable, and a size thereof can be adjusted according to a size of the grille.

3. The thermal management device according to claim 2, characterized in that: The connecting device comprises an outer frame and an inner frame, wherein the outer frame is located outside the inner frame, the channel is arranged inside the inner frame, and the size of the inner frame is adjustable.

4. The thermal management device according to claim 3, characterized in that: The connecting device further comprises an elastic member, which is arranged at the second end of the connecting device and is used for sealing with the shell of the vehicle.

5. The thermal management device according to claim 1, characterized in that: The connection device further comprises a sealing structure, which is arranged at the air outlet and is used to form a sealed connection between the air outlet and the grille.

6. The thermal management device according to claim 1, characterized in that: The thermal management device further comprises: A flow rate control device is in fluid communication with the gas inlet and is configured to adjust a gas flow rate at the gas outlet.

7. The thermal management device according to claim 6, characterized in that: The thermal management device further comprises an input device, wherein the input device is used to receive a target flow rate value, and the flow rate control device is used to adjust the gas flow rate at the gas outlet according to the target flow rate value.

8. The thermal management device according to claim 1, characterized in that: The thermal management device further comprises: A refrigeration device is connected to the connection device and is configured to output gas with a temperature lower than the ambient temperature to the air inlet.

9. The thermal management device according to claim 8, characterized in that: The thermal management device further includes a control module, which is connected to the refrigeration device and is configured to adjust the temperature of the gas output by the refrigeration device to the air inlet.

10. The thermal management device according to claim 9, characterized in that: The thermal management device also includes an input device, which is used to receive a target temperature value. The control module is used to adjust the temperature of the gas output by the refrigeration device to the air inlet according to the target temperature value.

11. The thermal management device according to claim 8, characterized in that: The refrigeration device comprises a compressor, an evaporator, a condenser, and a refrigerant pipeline for connecting the compressor, the evaporator and the condenser.

12. The thermal management device according to claim 11, characterized in that: One of the refrigeration devices is connected to one of the connection devices, or one of the refrigeration devices is connected to at least two of the connection devices.

13. The thermal management device according to claim 1, characterized in that: The thermal management device further includes a moving device, and the connecting device is connected to the moving device, wherein the moving device is used to drive the connecting device to move so as to adjust the position of the connecting device relative to the grille of the electric vehicle.

14. The thermal management device according to claim 13, characterized in that: The thermal management device further comprises: A locking device is used to lock the connecting device when the connecting device is connected to or in contact with the grille.

15. The thermal management device according to claim 13 or 14, characterized in that: The thermal management device also includes a communication module and a control module, wherein the communication module is used to obtain the position information of the electric vehicle, and the control module is used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille.

16. The thermal management device according to claim 15, characterized in that: The communication module is further configured to obtain size information of the grille, and the control module is further configured to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

17. The thermal management device according to claim 13 or 14, characterized in that: The thermal management device also includes an image acquisition device and a control module, wherein the image acquisition device is configured to acquire image information of the electric vehicle, and the control module acquires position information of the electric vehicle based on the image information of the electric vehicle, and the control module is further used to control the moving device to drive the connecting device to move based on the position information so that the connecting device is connected or in contact with the grille.

18. The thermal management device according to claim 17, characterized in that: The control module is also used to obtain size information of the grille of the electric vehicle based on image information of the electric vehicle, and the control module is also used to adjust the size of the second end of the connecting device based on the size information of the grille so that the connecting device is adapted to the grille.

19. The thermal management device according to claim 13 or 14, characterized in that: The thermal management device also includes an input device and a control module, wherein the input device is configured to receive position information of the electric vehicle, and the control module is also used to control the moving device to drive the connecting device to move according to the position information, so that the connecting device is connected or in contact with the grille.

20. The thermal management device according to claim 19, characterized in that The input device is further used to receive size information of the grille, and the control module is further used to adjust the size of the second end of the connecting device according to the size information of the grille, so that the connecting device is adapted to the grille.

21. A charging system, characterized in that: The charging system comprises a thermal management device according to any one of claims 1 to 20.

22. A charging pile, characterized in that: The charging pile comprises a thermal management device according to any one of claims 1 to 20 or a charging system according to claim 21.

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