High-power liquid cooling charging pile

Abstract

The invention relates to the field of charging piles, and particularly discloses a high-power liquid cooling charging pile which comprises a control module, a liquid cooling module, a charging module, a charging cable, a charging head and an immersion box, and the charging module is located in the immersion box; the liquid cooling template comprises a cold liquid storage box, a radiator and a reflux pump, an outlet of the immersion box is connected with a liquid outlet pipe, an outlet of the cold liquid storage box is communicated with an inlet of the immersion box through a liquid return pipe, and the reflux pump is installed on the liquid return pipe; the liquid outlet pipe and the inlet of the cold liquid storage box are connected in parallel with a plurality of radiators with different heat dissipation efficiency; the end, close to the radiators, of the liquid outlet pipe is provided with a control valve for controlling cooling liquid to selectively enter one radiator, and the end, away from the radiators, of the liquid outlet pipe is provided with a first temperature sensor.

Description

Technical Field

[0001] The present application relates to the field of charging piles, and in particular to a high-power liquid-cooled charging pile. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or electric vehicle power supply equipment, is a device that provides electrical energy to electric vehicles, enabling them to store enough electricity to support their operation.

[0003] The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles. Charging piles generally provide two charging methods: conventional charging and fast charging. People can use a specific charging card to swipe the card on the human-computer interaction interface provided by the charging pile to perform corresponding charging operations and print cost data. The charging pile display can display data such as charging capacity, cost, and charging time.

[0005] At present, the main problem of charging piles is the low charging efficiency. A single charge takes half an hour or even longer. One of the main factors limiting its charging efficiency is that the charging module generates a lot of heat during the charging process, causing the charging module to overheat, thus limiting the charging efficiency. At present, the charging module mainly dissipates heat through air cooling and other forms.

[0006] In order to solve the above problems, it is currently proposed to apply the liquid cooling system applied to the server to the charging pile. For example, a charging pile disclosed in CN108032750B includes a coolant heat exchange device. The coolant heat exchange device includes a heat exchange pipeline, a coolant output pipe connected to the heat exchange pipeline, and a coolant input pipe. The coolant output pipe and the coolant input pipe are used to communicate with the vehicle battery cooling pipeline respectively, so that the heat exchange pipeline and the vehicle battery cooling pipeline form a loop. Through the loop of the coolant pipeline, the coolant heat exchange device of the charging pile can achieve heating and heat dissipation of the battery pack of the pure electric vehicle to ensure that the vehicle battery can be charged within an optimal temperature range.

[0007] With respect to the above-mentioned related technologies, the inventors believe that there are the following defects: since the heat dissipation equipment power of ordinary liquid-cooled charging piles is certain, when fast charging is continued for a long time, its heat dissipation efficiency is reduced, resulting in that it can only reduce the charging power. Summary of the invention

[0008] In order to improve the problem of low heat dissipation efficiency, the present application provides a high-power liquid-cooled charging pile.

[0009] A high-power liquid-cooled charging pile provided in the present application adopts the following technical solution: a high-power liquid-cooled charging pile, comprising a control module, a liquid cooling module, a charging module, a charging cable, a charging head, and an immersion tank, wherein the charging module is located in the immersion tank; the liquid cooling template comprises a cold liquid storage tank, a radiator, and a reflux pump, the outlet of the immersion tank is connected to a liquid outlet pipe, the outlet of the cold liquid storage tank is connected to the inlet of the immersion tank through a return liquid pipe, and the reflux pump is installed on the return liquid pipe; a plurality of radiators with different heat dissipation efficiencies are connected in parallel to the liquid outlet pipe and the inlet of the cold liquid storage tank; a control valve for controlling the coolant to select to enter one of the radiators is provided at one end of the liquid outlet pipe close to the radiator, and a temperature sensor is provided at one end of the liquid outlet pipe away from the radiator.

[0010] A return pipe is provided between two adjacent radiators, one end of which is connected to the outlet of the radiator with high heat dissipation efficiency, and the other end is connected to the inlet of the radiator with low heat dissipation efficiency; each radiator outlet is provided with a temperature sensor 2, which is located between the end of the return pipe close to the cold liquid storage tank and the radiator outlet. A three-way solenoid valve is provided at the connection between the return pipe and the radiator outlet.

[0011] A high-power liquid-cooled charging pile comprises a control module, a liquid-cooling module, a charging module, a charging cable, a charging head, and an immersion tank, wherein the charging module is located in the immersion tank; the liquid-cooling template comprises a hot liquid storage tank, a cold liquid storage tank, a transfer tank, a radiator, a transfer pump, and a reflux pump, wherein the outlet of the immersion tank is connected to the inlet of the hot liquid storage tank through a liquid outlet pipe, the outlet of the hot liquid storage tank is connected to the inlet of the transfer tank, the transfer pump is located between the hot liquid storage tank and the transfer tank and is used to draw the liquid in the hot liquid storage tank into the transfer tank; the outlet of the transfer tank is connected to the inlet of the cold liquid storage tank, the outlet of the cold liquid storage tank is connected to the inlet of the immersion tank through a return liquid pipe, and the reflux pump is installed on the return liquid pipe; the radiator is located between the transfer tank and the cold liquid storage tank; a first liquid level gauge is provided in the cold liquid storage tank.

[0012] By adopting the above technical solution, in this solution, the liquid in the hot liquid storage tank is first sent to the transfer tank.

[0013] Optionally, the radiator includes at least one of an air-cooled radiator, a water-cooled radiator, and a heat pipe radiator.

[0014] By adopting the above technical solution, various radiators can meet the requirements of this solution. For air-cooled radiators, air-cooled towers can be selected, for water-cooled radiators, water-cooled towers can be selected, and for heat pipe radiators, the pipelines formed by heat pipes can be bent into S shapes, etc., to extend the pipeline path.

[0015] Optionally, the hot liquid storage box includes a heat dissipation box body and a heat insulation plate located in the heat dissipation box body, wherein a plurality of heat insulation plates are arranged to divide the heat dissipation box body into a plurality of inner chambers; the inlet of the transfer pump is connected to a liquid extraction pipe, the liquid extraction pipe has a plurality of branches corresponding to the inner chambers, one branch corresponds to one inner chamber, and each branch has a solenoid valve; a liquid distributor is provided in the heat dissipation box body, the liquid outlet pipe is connected to the liquid distributor, the liquid distributor has a plurality of outlet pipes corresponding to the inner chambers, each outlet pipe corresponds to one inner chamber, and each outlet pipe has a solenoid valve.

[0016] By adopting the above technical solution, the hot liquid storage box is divided into multiple inner chambers by the insulation board. The height of the insulation board can be consistent with the height of the heat dissipation box body, so that adjacent inner chambers are completely separated. Holes for the liquid distributor and the liquid extraction tube to pass through need to be opened on the insulation board, and the extraction and entry order is controlled by the solenoid valve.

[0017] Optionally, a second liquid level meter is provided in the transfer box.

[0018] By adopting the above technical solution, when the liquid level in the transfer box is too low, high-temperature coolant will be pumped into the hot liquid storage tank.

[0019] Optionally, at least two radiators are arranged in parallel, and each radiator has a different heat dissipation efficiency; it also includes a straight pipe directly connected to the transfer box and the cold liquid storage tank, and solenoid valves are provided on the pipeline connected to the radiator and on the straight pipe.

[0020] By adopting the above technical solution, radiators with different heat dissipation efficiencies are selected according to the different temperatures of the coolant in the transfer box.

[0021] Optionally, the cold liquid storage tank, return liquid pipe and immersion tank are all heat-insulating structures, the hot liquid storage tank, transfer box and the pipes therebetween are all heat-dissipating structures, and the pipes from the transfer box to the radiator and the pipes from the radiator to the cold liquid storage tank are heat-insulating structures.

[0022] By adopting the above technical solution, since the ambient temperature is generally higher than the temperature of the low-temperature coolant, if it is not insulated, it will cause the structure to absorb heat, causing the low-temperature coolant to heat up. Therefore, the cold liquid storage tank, the return pipe and the immersion tank are all insulated structures to ensure that the coolant coming out of the cold liquid storage tank and entering the immersion tank is the set low-temperature coolant. Since the ambient temperature is generally lower than the temperature of the high-temperature coolant, a heat dissipation structure can be set to dissipate part of the heat of the high-temperature coolant into the environment through its own structure, thereby reducing energy consumption.

[0023] Optionally, a high-power liquid-cooled charging pile also includes a main box, the liquid cooling module is located inside the main box, the immersion box is located outside the main box, the liquid outlet pipe is partially located inside the main box, the liquid outlet pipe is a heat pipe, and a first cooling fan and a second cooling fan are installed in the main box, the first cooling fan faces the horizontal part of the liquid outlet pipe, and the second cooling fan faces the longitudinal part of the liquid outlet pipe.

[0024] By adopting the above technical solution, since the pipeline is generally bent in actual design, a first cooling fan and a second cooling fan are provided to dissipate heat for the transverse part and the longitudinal part of the liquid outlet pipe respectively.

[0025] Optionally, a first temperature sensor is installed in the immersion tank, a second temperature sensor is installed in the hot liquid storage tank, and a third temperature sensor is installed in the transfer tank.

[0026] By adopting the above technical solution, the first temperature sensor can be used to directly detect the temperature of the charging module or indirectly detect the temperature of the charging module through the temperature of the coolant. When an abnormality occurs, the charging module is controlled to be powered off.

[0027] Optionally, a flow control pump or a speed regulating valve is provided between the transfer box and the radiator.

[0028] The flow rate of the coolant entering or passing through the radiator in the transfer box can be limited by a flow control pump or a speed regulating valve, thereby ensuring that the coolant has enough time to cool to the set temperature.

[0029] Optionally, a control method for a high-power liquid-cooled charging pile is provided, in which the reflux pump is started, and the liquid in the transfer tank is restored to low-temperature coolant after dissipating heat through the radiator, and then enters the cold liquid storage tank, and the low-temperature coolant enters the immersion tank from the cold liquid storage tank; the high-temperature coolant after absorbing heat in the immersion tank enters the inner cavity of the hot liquid storage tank in turn; when the first liquid level gauge in the cold liquid storage tank detects that the liquid level is lower than the water level setting value, the transfer pump is started to pump the high-temperature coolant in the hot liquid storage tank into the transfer tank, and only the high-temperature coolant in one inner cavity is pumped out at a time, and the extraction order is the same as the order in which the high-temperature coolant enters the inner cavity or is extracted in sequence from low to high according to the coolant temperature of the inner cavity, and a straight-through pipe or different radiators are selected according to the temperature detected by the third temperature sensor of the transfer tank.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up multiple radiators with different heat dissipation efficiencies, different radiators can be selected according to the temperature of the return coolant to ensure the heat dissipation effect; 2. By setting up a return pipe, multiple radiators can be used in series to meet the cooling needs of higher power charging; 3. Immersing the charging module in coolant can isolate the air and provide better electrical insulation, thereby improving the safety of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the liquid cooling module. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the liquid cooling module. Figure 2 ; Figure 4 is a schematic diagram of the structure of the hot liquid storage tank; Figure 5 This is a schematic diagram of the structure of the liquid cooling module. Figure 3 .

[0032] Figure numerals: 1, control module; 2, liquid cooling module; 3, charging module; 4, charging cable; 5, charging head; 6, immersion tank; 7, hot liquid storage tank; 8, cold liquid storage tank; 9, transfer tank; 10, radiator; 11, transfer pump; 12, reflux pump; 13, outlet pipe; 14, liquid outlet pipe; 15, liquid return pipe; 16, four-way valve; 17, solenoid valve; 18, straight pipe; 19, first liquid level gauge; 20, second liquid Level meter; 21. First temperature sensor; 22. Second temperature sensor; 23. Third temperature sensor; 24. Main chassis; 25. First cooling fan; 26. Second cooling fan; 27. Heat insulation board; 28. Inner cavity; 29. ​​Branch pipe; 30. Dispenser; 31. Flow control pump; 32. Speed ​​regulating valve; 33. Temperature sensor 1; 34. Temperature sensor 2; 35. Reflux pipe; 36. Three-way solenoid valve; 37. Control valve. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] Embodiment 1: A high-power liquid-cooled charging pile comprises a control module 1, a liquid-cooling module 2, a charging module 3, a charging cable 4, a charging head 5, and an immersion box 6. The control module 1 is an industrial computer.

[0035] The charging module 3 is located in the immersion box 6 , and one end of the charging cable 4 is electrically connected to the charging head 5 , and the other end is electrically connected to the charging module 3 .

[0036] The liquid cooling template includes a cold liquid storage tank 8, a radiator 10, and a reflux pump 12. The outlet of the immersion tank 6 is connected to a liquid outlet pipe 14. The outlet of the cold liquid storage tank 8 is connected to the inlet of the immersion tank 6 through a liquid return pipe 15. The reflux pump 12 is installed on the liquid return pipe 15. The liquid outlet pipe 14 and the inlet of the cold liquid storage tank 8 are connected in parallel with multiple radiators 10 with different heat dissipation efficiencies. The end of the liquid outlet pipe 14 close to the radiator 10 is provided with a control valve 37 for controlling the coolant to enter one of the radiators 10, and the end of the liquid outlet pipe 14 away from the radiator 10 is provided with a temperature sensor 33. There are many types of radiators 10, including at least one of air-cooled radiators 10, water-cooled radiators 10, and heat pipe radiators 10. The radiator 10 can be selected according to needs. This embodiment only illustrates how to use it. For example, the radiator 10 is a radiator of the same type with different power sizes. The greater the power, the higher the heat dissipation efficiency, but its energy consumption will also be higher.

[0037] A return pipe 35 is provided between two adjacent radiators 10, one end of the return pipe 35 is connected to the outlet of the radiator 10 with high heat dissipation efficiency, and the other end is connected to the inlet of the radiator 10 with low heat dissipation efficiency; a temperature sensor 2 34 is provided at the outlet of each radiator 10, and the temperature sensor 2 34 is located between one end of the return pipe 35 close to the cold liquid storage tank 8 and the outlet of the radiator 10. A three-way solenoid valve 17 is provided at the connection between the return pipe 35 and the outlet of the radiator 10. The three-way solenoid valve 17 is used to control whether the coolant flows into the cold liquid storage tank 8 or the return pipe 35 after coming out of the radiator 10.

[0038] In this embodiment, three radiators 10 are used as an example for description. The three radiators 10 are named radiator 101, radiator 102, and radiator 103 respectively. The heat dissipation efficiency of radiator 101 is lower than that of radiator 102, and the heat dissipation efficiency of radiator 102 is lower than that of radiator 103. The control valve 37 is a four-way solenoid valve 17.

[0039] A return pipe 35 is provided between two adjacent radiators 10, one end of the return pipe 35 is connected to the outlet of the radiator 10 with high heat dissipation efficiency, and the other end is connected to the inlet of the radiator 10 with low heat dissipation efficiency; a temperature sensor 2 34 is provided at the outlet of each radiator 10, and the temperature sensor 2 34 is located between one end of the return pipe 35 close to the cold liquid storage tank 8 and the outlet of the radiator 10.

[0040] Specific working principle: For example, the initial temperature of the coolant in the coolant storage tank 8 is 20°C. When the temperature sensor 33 detects that the coolant temperature of the liquid outlet pipe 14 does not exceed 40°C, radiator 1 is selected; when it exceeds 40°C but is not higher than 50°C, radiator 2 is selected; when it is higher than 50°C but not higher than 60°C, radiator 3 is selected; when it is higher than 60°C but not higher than 65°C, radiator 3+radiator 1 is selected; when it is higher than 65°C but not higher than 70°C, radiator 3+radiator 2 is selected; when it is higher than 70°C but not higher than 75°C, radiator 3+radiator 2+radiator 1 is selected. The setting of temperature sensor 2 is to assist in judging whether the above selection method is correct.

[0041] Embodiment 2: A high-power liquid-cooled charging pile comprises a control module 1, a liquid-cooling module 2, a charging module 3, a charging cable 4, a charging head 5, and an immersion box 6. The control module 1 is an industrial computer.

[0042] The charging module 3 is located in the immersion box 6 , and one end of the charging cable 4 is electrically connected to the charging head 5 , and the other end is electrically connected to the charging module 3 .

[0043] The liquid cooling template includes a hot liquid storage tank 7, a cold liquid storage tank 8, a transfer tank 9, a radiator 10, a transfer pump 11, and a reflux pump 12. The outlet of the immersion tank 6 is connected to the inlet of the hot liquid storage tank 7 through a liquid outlet pipe 14, and the outlet of the hot liquid storage tank 7 is connected to the inlet of the transfer tank 9. The transfer pump 11 is located between the hot liquid storage tank 7 and the transfer tank 9 and is used to pump the liquid in the hot liquid storage tank 7 into the transfer tank 9; the outlet of the transfer tank 9 is connected to the inlet of the cold liquid storage tank 8, and the outlet of the cold liquid storage tank 8 is connected to the inlet of the immersion tank 6 through a return pipe 15, and the reflux pump 12 is installed on the return pipe 15; the radiator 10 is located between the transfer tank 9 and the cold liquid storage tank 8, and the radiator 10 includes at least one of an air-cooled radiator 10, a water-cooled radiator 10, and a heat pipe radiator 10. The capacity of the cold liquid storage tank 8 is smaller than that of the hot liquid storage tank 7.

[0044] The air-cooled radiator 10 can be an air-cooled tower, the water-cooled radiator 10 can be a water-cooled tower, and the heat pipe radiator 10 can be a pipeline formed by a heat pipe. In order to extend the pipeline path, it can be bent into an S shape, etc. Preferably, at least two radiators 10 are set in parallel, and the heat dissipation efficiency of each radiator 10 is different. Specifically, in this embodiment, two radiators 10 are selected as an example for explanation. The heat dissipation efficiencies of the two radiators 10 are different. When the efficiencies of the radiators 10 are different, the radiators 10 can select the same type of radiator 10, for example, both are water-cooled radiators 10, and the water volume of the two radiators 10 is different, so that the final heat dissipation efficiency is different; or the structure of the packing bed of the two water-cooling towers or the number of layers of the packing bed are different, thereby changing the resistance of the gas channel, and finally making the heat exchange efficiency of the two water-cooling towers different. For the convenience of subsequent explanation, the heat dissipation efficiency of one water-cooling tower is positioned as S1, and the heat dissipation efficiency of the other water-cooling tower is S2, S1 is greater than S2, and the greater the heat dissipation efficiency, the better the cooling efficiency of the coolant. The high-power liquid-cooled charging pile also includes a straight pipe 18 directly connecting the transfer box 9 and the cold liquid storage tank 8. The straight pipe 18 can be regarded as being connected in parallel with the two radiators 10. In order to control which radiator 10 the coolant enters the cold liquid storage tank 8, one way is to provide a solenoid valve 17 on the pipe connected to the radiator 10 and the straight pipe 18, or replace the solenoid valve 17 with a multi-way valve, for example, the present application selects a four-way valve 16, three of the interfaces of the four-way valve 16 are respectively connected to the two radiators 10 and the straight pipe 18, and the other interface is connected to the transfer box 9.

[0045] A first liquid level gauge 19 is provided in the cold liquid storage tank 8, and a second liquid level gauge 20 is provided in the transfer tank 9. A first temperature sensor 21 is installed in the immersion tank 6, a second temperature sensor 22 is installed in the hot liquid storage tank 7, and a third temperature sensor 23 is installed in the transfer tank 9.

[0046] The high-power liquid-cooled charging pile also includes a main box 24, the liquid cooling module 2 and the control module 1 are located in the main box 24, the immersion box 6 is located outside the main box 24, and the liquid outlet pipe 14 is partially located in the main box 24. The liquid outlet pipe 14 is a heat pipe, such as a copper pipe. A first cooling fan 25 and a second cooling fan 26 are installed in the main box 24. The first cooling fan 25 faces the horizontal part of the liquid outlet pipe 14, and the second cooling fan 26 faces the longitudinal part of the liquid outlet pipe 14.

[0047] The cold liquid storage tank 8, the liquid return pipe 15 and the immersion tank 6 are all heat-insulating structures, the hot liquid storage tank 7, the transfer tank 9 and the pipes therebetween are all heat-dissipating structures, and the pipes between the transfer tank 9 and the radiator 10 and the pipes from the radiator 10 to the cold liquid storage tank 8 are heat-insulating structures. The heat-insulating structure and the heat-dissipating structure can be the material itself, or they can be additional heat insulation or heat dissipation. For example, for heat insulation, a heat-insulating board 27 or a heat-insulating coating is set outside the box or the pipe, and the heat-dissipating structure can set the pipe or the box as a metal box, and add heat-dissipating fins outside the metal box. By adopting the above technical solution, since the ambient temperature is generally higher than the temperature of the low-temperature coolant, if it is not insulated, it will cause the structure to absorb heat, causing the low-temperature coolant to heat up. Therefore, the cold liquid storage tank 8, the liquid return pipe 15 and the immersion tank 6 are all heat-insulating structures, ensuring that the coolant coming out of the cold liquid storage tank 8 and entering the immersion tank 6 is the set low-temperature coolant. Since the ambient temperature is generally lower than the temperature of the high-temperature coolant, a heat dissipation structure can be provided to dissipate part of the heat of the high-temperature coolant into the environment through the structure itself, thereby reducing energy consumption.

[0048] The hot liquid storage box 7 includes a heat dissipation box body and a heat insulation board 27 located in the heat dissipation box body. The heat dissipation box body can be set to be made of aluminum alloy and have heat dissipation fins attached to the outer wall. A plurality of heat insulation boards 27 are provided to divide the heat dissipation box body into a plurality of inner chambers 28; the height of the heat insulation board 27 can be consistent with the height of the heat dissipation box body, so that the adjacent inner chambers 28 are completely separated. In this embodiment, the plurality of inner chambers 28 are specifically inner chamber A, inner chamber B, inner chamber C, inner chamber D, and inner chamber E. The inlet of the transfer pump 11 is connected to a liquid extraction pipe, and the liquid extraction pipe has a plurality of branch pipes 29 corresponding to the inner chamber 28, one branch pipe 29 corresponds to one inner chamber 28, and each branch pipe 29 has a solenoid valve 17; a liquid distributor 30 is provided in the heat dissipation box body, and the liquid outlet pipe 14 is connected to the liquid distributor 30, and the liquid distributor 30 has a plurality of outlet pipes 13 corresponding to the inner chamber 28, each outlet pipe 13 corresponds to one inner chamber 28, and each outlet pipe 13 has a solenoid valve 17. Since the hot liquid storage tank 7 is divided into a plurality of inner chambers 28 , a second temperature sensor 22 is disposed corresponding to each inner chamber 28 .

[0049] A flow control pump 31 or a speed regulating valve 32 is provided between the transfer box 9 and the radiator 10. The flow control pump 31 or the speed regulating valve 32 can limit the flow rate of the coolant entering or passing through the radiator 10 from the transfer box 9, thereby ensuring that the coolant has enough time to cool to the set temperature.

[0050] The coolant can be water, fluorinated liquid, oil, etc.

[0051] Embodiment 3: A control method for a high-power liquid-cooled charging pile, the reflux pump 12 is started, the liquid in the transfer tank 9 is restored to low-temperature coolant after dissipating heat through the radiator 10, and then enters the cold liquid storage tank 8, and the low-temperature coolant enters the immersion tank 6 from the cold liquid storage tank 8; the high-temperature coolant after absorbing heat in the immersion tank 6 enters the inner cavity 28 in the hot liquid storage tank 7 in turn, for example, enters the inner cavity A, inner cavity B...inner cavity E in sequence; when the first liquid level gauge 19 in the cold liquid storage tank 8 detects that the liquid level is lower than the water level setting value, generally two water level values ​​are set, such as a high water level value and a low water level value, and the transfer pump 11 is started to pump the high-temperature coolant in the hot liquid storage tank 7 into the transfer tank 9, and the extraction speed is increased when the water level value is low, and the radiator 10 with higher heat dissipation efficiency is selected as S1. And only the high-temperature coolant in one inner cavity 28 is extracted each time, and the extraction sequence is the same as the sequence of the high-temperature coolant entering the inner cavity 28 or is extracted in order from low to high according to the coolant temperature of the inner cavity 28 (in this embodiment 1, the inner cavity A is extracted first, then the inner cavity B is extracted, and then to the inner cavity E, and when the inner cavity B is extracted, the inner cavity A is refilled, and so on), and the straight pipe 18 or different radiators 10 are selected according to the temperature detected by the third temperature sensor 23 of the transfer box 9. In the above manner, it is ensured that the temperature of the coolant entering the cold liquid storage tank 8 after passing through the radiator 10 is always maintained at the initial temperature (set temperature) of the coolant. A more preferred starting method for the transfer pump 11 is: when the second liquid level gauge 20 detects that the liquid level is empty or close to empty, and at the same time the first liquid level gauge 19 also detects that the water level is lower than the water level setting value (high water level value), the transfer pump 11 is started.

[0052] The first temperature sensor 21 can be used to directly detect the temperature of the charging module 3 or indirectly detect the temperature of the charging module 3 through the temperature of the coolant. When an abnormality occurs, the charging module 3 is controlled to be powered off.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-power liquid-cooled charging pile, characterized in that: It includes a control module, a liquid cooling module, a charging module, a charging cable, a charging head, and an immersion tank, wherein the charging module is located in the immersion tank; the liquid cooling template includes a cold liquid storage tank, a radiator, and a reflux pump, the outlet of the immersion tank is connected with a liquid outlet pipe, the outlet of the cold liquid storage tank is connected with the inlet of the immersion tank through a liquid return pipe, and the reflux pump is installed on the liquid return pipe; a plurality of radiators with different heat dissipation efficiencies are connected in parallel to the liquid outlet pipe and the inlet of the cold liquid storage tank; a control valve for controlling the coolant to select to enter one of the radiators is provided at one end of the liquid outlet pipe close to the radiator, and a temperature sensor is provided at one end of the liquid outlet pipe away from the radiator.

2. A high-power liquid-cooled charging pile according to claim 1, characterized in that: A return pipe is arranged between two adjacent radiators, one end of the return pipe is connected to the outlet of the radiator with high heat dissipation efficiency, and the other end is connected to the inlet of the radiator with low heat dissipation efficiency; each radiator outlet is provided with a temperature sensor 2, and the temperature sensor 2 is located between one end of the return pipe close to the cold liquid storage tank and the radiator outlet, and a three-way solenoid valve is arranged at the connection between the return pipe and the radiator outlet.

3. A high-power liquid-cooled charging pile according to claim 1, characterized in that: The radiator includes at least one of an air-cooled radiator, a water-cooled radiator, and a heat pipe radiator.

4. A high-power liquid-cooled charging pile, characterized in that: It includes a control module, a liquid cooling module, a charging module, a charging cable, a charging head, and an immersion tank, wherein the charging module is located in the immersion tank; the liquid cooling template includes a hot liquid storage tank, a cold liquid storage tank, a transfer tank, a radiator, a transfer pump, and a reflux pump, wherein the outlet of the immersion tank is connected to the inlet of the hot liquid storage tank through a liquid outlet pipe, and the outlet of the hot liquid storage tank is connected to the inlet of the transfer tank, and the transfer pump is located between the hot liquid storage tank and the transfer tank and is used to draw the liquid in the hot liquid storage tank into the transfer tank; the outlet of the transfer tank is connected to the inlet of the cold liquid storage tank, and the outlet of the cold liquid storage tank is connected to the inlet of the immersion tank through a return liquid pipe, and the reflux pump is installed on the return liquid pipe; the radiator is located between the transfer tank and the cold liquid storage tank; a first liquid level gauge is provided in the cold liquid storage tank.

5. A high-power liquid-cooled charging pile according to claim 4, characterized in that: The hot liquid storage box includes a heat dissipation box body and a heat insulation plate located in the heat dissipation box body. A plurality of heat insulation plates are arranged to divide the heat dissipation box body into a plurality of inner chambers. The inlet of the transfer pump is connected to a liquid extraction pipe. The liquid extraction pipe has a plurality of branch pipes corresponding to the inner chambers. One branch pipe corresponds to one inner chamber. Each branch pipe has a solenoid valve. A liquid distributor is provided in the heat dissipation box body. The liquid outlet pipe is connected to the liquid distributor. The liquid distributor has a plurality of outlet pipes corresponding to the inner chambers. Each outlet pipe corresponds to one inner chamber. Each outlet pipe has a solenoid valve.

6. A high-power liquid-cooled charging pile according to claim 4, characterized in that: A first liquid level gauge is arranged in the cold liquid storage tank, and a second liquid level gauge is arranged in the transfer tank.

7. A high-power liquid-cooled charging pile according to claim 4, characterized in that: At least two radiators are arranged in parallel, and each radiator has a different heat dissipation efficiency; it also includes a straight pipe directly connected to the transfer box and the cold liquid storage tank, and electromagnetic valves are arranged on the pipeline connected to the radiator and the straight pipe.

8. A high-power liquid-cooled charging pile according to claim 4, characterized in that: The cold liquid storage tank, return liquid pipe and immersion tank are all heat-insulating structures, the hot liquid storage tank, transfer box and the pipes therebetween are all heat-dissipating structures, and the pipes from the transfer box to the radiator and the pipes from the radiator to the cold liquid storage tank are heat-insulating structures.

9. A high-power liquid-cooled charging pile according to claim 4, characterized in that: A first temperature sensor is installed in the immersion tank, a second temperature sensor is installed in the hot liquid storage tank, and a third temperature sensor is installed in the transfer tank.

10. A high-power liquid-cooled charging pile according to claim 4, characterized in that: A flow control pump or a speed regulating valve is arranged between the transfer box and the radiator.

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