Active liquid cooling device for high-voltage direct-current charging gun

Abstract

The active liquid cooling device comprises a charging gun body, an annular heat dissipation cavity is formed in the charging gun body, a water storage cavity located below the heat dissipation cavity is formed in the charging gun body, an air blowing assembly is arranged at the top of the heat dissipation cavity, and a bearing ring is slidably installed in the heat dissipation cavity in the vertical direction; a sponge pad is fixedly installed on the bottom wall of the bearing ring, a control mechanism matched with the bearing ring is arranged in the heat dissipation cavity, the control mechanism comprises a positioning assembly and a dewatering assembly, the positioning assembly comprises a first lifting part and an adjusting part, and the dewatering assembly comprises a bottom plate, a guide part and a second lifting part. The problems that the cooling efficiency of an existing fan on the charging gun is low, the charging gun is continuously kept in a high-temperature state, and the using effect of the charging gun is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging gun equipment, and in particular to an active liquid cooling device for a high-voltage direct current charging gun. Background Art

[0002] With the popularity of new energy electric vehicles, the development of DC fast charging technology is becoming more and more important. When you need to use a charging gun to connect and charge an electric vehicle, plug the charging gun into the charging seat at the vehicle end. There must be contact resistance between the terminal of the charging gun and the docking hole of the charging seat at the vehicle end, so a lot of heat will be generated during the charging process. If the temperature of the charging gun is too high, it will cause abnormal charging failure, and even burn out the charging gun, which poses a safety hazard.

[0003] The charging gun is usually equipped with a micro fan inside for blowing air to dissipate heat. When the existing fan heat dissipation method is in use, the cooling efficiency of the charging gun is low, and the charging gun continues to maintain a high temperature, affecting the use effect of the charging gun. Summary of the invention

[0004] The object of the present invention is to provide an active liquid cooling device for a high-voltage DC charging gun to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An active liquid cooling device for a high-voltage DC charging gun comprises a charging gun body, wherein an annular heat dissipation cavity is provided inside the charging gun body, a ventilation hole connected to the heat dissipation cavity is provided inwardly on the side wall of the charging gun body, a water storage cavity located below the heat dissipation cavity is provided inside the charging gun body, the water storage cavity is an annular structure, a water injection port connected to the water storage cavity is provided inwardly on the side wall of the charging gun body, a connecting groove connected to the water storage cavity is provided downwardly on the bottom wall of the heat dissipation cavity, a blowing assembly is provided on the top of the heat dissipation cavity, the blowing assembly is used to accelerate the air flow in the heat dissipation cavity, a bearing ring is slidably installed in the heat dissipation cavity along the vertical direction, a sponge pad is fixedly installed on the bottom wall of the bearing ring, a control mechanism cooperating with the bearing ring is provided in the heat dissipation cavity, and the control mechanism comprises a positioning assembly The positioning assembly comprises a first lifting part and an adjusting part, wherein the first lifting part is located in the heat dissipation cavity and is connected to the carrying ring, the adjusting part is connected to the first lifting part, and the adjusting part controls the carrying ring to reciprocate in the vertical direction in the heat dissipation cavity by cooperating with the first lifting part. The dehydration assembly comprises a bottom plate, a guide part and a second lifting part, wherein the guide part is located on the bottom wall of the carrying ring and is connected to the bottom plate, and the guide part is used to control the bottom plate to be in a horizontal state below the sponge pad, and the second lifting part is located on the surface of the carrying ring and is connected to the bottom plate. When the carrying ring moves in the vertical direction in the heat dissipation cavity, the second lifting part controls the bottom plate to move synchronously in the vertical direction below the carrying ring by cooperating with the guide part.

[0007] As a further solution of the present invention: the blowing assembly includes multiple groups of rotating rods distributed in a ring and rotatably installed on the top wall of the heat dissipation cavity, multiple groups of fan blades are arranged on the surface of the rotating rods, synchronous gear plates are fixedly installed on the surface of the rotating rods, and synchronous belts are commonly installed on the outer sides of the multiple groups of synchronous gear plates. The top end of a group of rotating rods extends to the outside of the charging gun body and is connected to a motor.

[0008] As a further solution of the present invention: the first lifting part includes a plurality of groups of annularly distributed threaded rods rotatably installed between the top wall and the bottom wall of the heat dissipation cavity, the threaded rods are threadedly connected to the load-bearing ring, the surface of the threaded rod is provided with a transmission gear disc that meshes with the synchronous gear disc, the transmission gear disc is sleeved on the outside of the threaded rod, and the adjustment part is located on the surface of the threaded rod and is connected to the transmission gear disc.

[0009] As a further solution of the present invention: the adjustment part includes a plurality of groups of vertical grooves in an annular distribution opened on the surface of the threaded rod, a limit block is fixedly installed on the inner side wall of the transmission gear disc, the limit block is slidably connected to the vertical groove along the vertical direction, an annular groove is opened on the surface of the transmission gear disc, the longitudinal cross-section of the annular groove is an inverted T-shaped structure, a sliding block is slidably installed in the annular groove, the sliding block extends to the top of the transmission gear disc and is fixedly installed with a vertical rod, the top end of the vertical rod extends to the outside of the charging gun body and is fixedly installed with a top ring, the bottom wall of the top ring is rotatably installed with a clamping rod, and the top wall of the charging gun body is opened with a clamping groove that cooperates with the clamping rod.

[0010] As a further solution of the present invention: the guide part includes a plurality of guide rods fixedly mounted on the bottom wall of the bearing ring, the guide rods are slidably connected to the bottom plate in a vertical direction, and a baffle located below the bottom plate is fixedly mounted on the bottom end of the guide rods.

[0011] As a further solution of the present invention: the second lifting part includes side panels fixedly installed on the surface of the carrying ring and located directly above the sponge pad, and the two sets of side panels distributed opposite to each other are installed with a rotating rod that rotates together. A winding roller is fixedly installed on the surface of the rotating rod, and a pulling rope is wound on the surface of the winding roller. One end of the pulling rope away from the winding roller passes downward through the carrying ring and the sponge pad and is connected to the bottom plate. One end of the rotating rod extends to the outside of the side panel and is fixedly installed with a fixed toothed disk. A rack is fixedly installed between the top wall and the bottom wall of the heat dissipation cavity, and the rack is meshingly connected with the fixed toothed disk.

[0012] As a further solution of the present invention: an extrusion spring sheet cooperating with the sponge pad is fixedly installed between the bottom wall of the bearing ring and the top wall of the bottom plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: by setting a positioning assembly consisting of a first lifting part and an adjusting part and cooperating with a dehydration assembly consisting of a bottom plate, a guide part, and a second lifting part, the position of the bearing ring in the heat dissipation cavity can be conveniently adjusted, and the sponge pad after absorbing water can be controlled to humidify and wipe the side wall of the heat dissipation cavity, and the charging gun body can be efficiently cooled by absorbing heat through water evaporation. The problem that the cooling efficiency of the current fan on the charging gun is low, the charging gun continues to maintain a high temperature state, and affects the use effect of the charging gun is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of an active liquid cooling device for a high-voltage DC charging gun provided in an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of a carrier ring and its connection structure in an active liquid cooling device for a high-voltage DC charging gun provided in an embodiment of the present invention.

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A.

[0017] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of B.

[0018] Figure 5 This is a schematic diagram of the main structure of an active liquid cooling device for a high-voltage DC charging gun provided in an embodiment of the present invention.

[0019] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of C in the figure.

[0020] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of D in the figure.

[0021] Among them: 1-charging gun body, 2-heat dissipation cavity, 21-ventilation hole, 3-water storage cavity, 31-water filling port, 32-connecting groove, 4-blowing component, 41-rotating rod, 42-fan blade, 43-synchronous gear disc, 44-synchronous belt, 45-motor, 5-carrying ring, 51-sponge pad, 6-control mechanism, 61-positioning component, 611-first lifting part, 6111-threaded rod, 6112-transmission gear disc, 612-adjusting part, 6121-vertical slot, 6122-limit Position block, 6123-annular groove, 6124-sliding block, 6125-vertical rod, 6126-top ring, 6127-clamping rod, 6128-clamping groove, 62-dehydration assembly, 621-bottom plate, 622-guide part, 6221-guide rod, 6222-baffle, 623-second lifting part, 6231-side plate, 6232-rotating rod, 6233-winding roller, 6234-pulling rope, 6235-fixed toothed disc, 6236-rack, 7-extrusion spring. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, it is a structural diagram of an active liquid cooling device for a high-voltage DC charging gun provided by an embodiment of the present invention, comprising a charging gun body 1, wherein an annular heat dissipation cavity 2 is provided inside the charging gun body 1, a ventilation hole 21 connected with the heat dissipation cavity 2 is provided inwardly on the side wall of the charging gun body 1, a water storage cavity 3 located below the heat dissipation cavity 2 is provided inside the charging gun body 1, wherein the water storage cavity 3 is an annular structure, a water injection port 31 connected with the water storage cavity 3 is provided inwardly on the side wall of the charging gun body 1, a connecting groove 32 connected with the water storage cavity 3 is provided downwardly on the bottom wall of the heat dissipation cavity 2, a blowing component 4 is provided on the top of the heat dissipation cavity 2, and the blowing component 4 is used to accelerate the air flow in the heat dissipation cavity 2, a bearing ring 5 is slidably installed in the heat dissipation cavity 2 along the vertical direction, and a sponge pad 51 is fixedly installed on the bottom wall of the bearing ring 5, a control mechanism 6 cooperating with the bearing ring 5 is provided in the heat dissipation cavity 2, and the control mechanism 6 includes a positioning component 61 and a dehydration component 62, and the The positioning assembly 61 includes a first lifting portion 611 and an adjusting portion 612. The first lifting portion 611 is located in the heat dissipation cavity 2 and is connected to the carrying ring 5. The adjusting portion 612 is connected to the first lifting portion 611. The adjusting portion 612 controls the carrying ring 5 to reciprocate in the vertical direction in the heat dissipation cavity 2 by cooperating with the first lifting portion 611. The dehydration assembly 62 includes a bottom plate 621, a guide portion 622 and a second lifting portion 623. The guide portion 622 is located on the bottom wall of the carrying ring 5 and is connected to the bottom plate 621. The guide portion 622 is used to control the bottom plate 621 to be in a horizontal state below the sponge pad 51. The second lifting portion 623 is located on the surface of the carrying ring 5 and is connected to the bottom plate 621. When the carrying ring 5 moves in the vertical direction in the heat dissipation cavity 2, the second lifting portion 623 controls the bottom plate 621 to move synchronously in the vertical direction below the carrying ring 5 by cooperating with the guide portion 622.

[0025] When in use, a proper amount of water is injected into the water storage chamber 3 through the water injection port 31. Initially, the carrying ring 5 is located at the bottom of the heat dissipation chamber 2, and the sponge pad 51 under the carrying ring 5 is inserted into the water storage chamber 3. At this time, the connecting groove 32 is in a sealed state. When the charging gun body 1 needs to be initially cooled, the blowing assembly 4 accelerates the air flow speed in the heat dissipation chamber 2. At this time, the carrying ring 5 remains stationary at the bottom of the heat dissipation chamber 2. When it is necessary to further increase the cooling effect, the first lifting part 611 cooperates with the adjusting part 612 to control the carrying ring 5 to move back and forth in the heat dissipation chamber 2. When the carrying ring 5 moves upward in the heat dissipation chamber 2, it will drive the sponge pad 51 to move upward synchronously. The sponge pad 51 absorbs a proper amount of water, and the carrying ring 5 brings When the movable sponge pad 51 moves upward, the second lifting part 623 cooperates with the guide part 622 to control the bottom plate 621 to move upward synchronously under the carrying ring 5. When the bottom plate 621 moves upward, it cooperates with the carrying ring 5 to squeeze the sponge pad 51 so that the sponge pad 51 fits the side wall of the heat dissipation cavity 2, and the water in the sponge pad 51 can be controlled to be evenly wiped on the side wall of the heat dissipation cavity 2. The blowing component 4 accelerates the air flow, and the moisture attached to the side wall of the heat dissipation cavity 2 evaporates and absorbs heat, so the charging gun body 1 can be efficiently cooled. When the charging gun body 1 is cooled, the first lifting part 611 cooperates with the adjusting part 612 to control the carrying ring 5 to move to the bottom of the heat dissipation cavity 2 and remain stationary.

[0026] like Figure 2 , Figure 3 , Figure 4 As shown, as a preferred embodiment of the present invention, the blowing assembly 4 includes a plurality of groups of rotating rods 41 distributed in a ring and rotatably installed on the top wall of the heat dissipation cavity 2, a plurality of groups of fan blades 42 are arranged on the surface of the rotating rods 41, a synchronous gear plate 43 is fixedly installed on the surface of the rotating rods 41, and a synchronous belt 44 is commonly installed on the outer side of the plurality of groups of synchronous gear plates 43, and the top end of a group of rotating rods 41 extends to the outside of the charging gun body 1 and is connected to a motor 45.

[0027] When the charging gun body 1 needs to be cooled, the motor 45 drives a group of rotating rods 41 to rotate and then drives the synchronous gear plate 43 to rotate. The synchronous gear plate 43 cooperates with the synchronous belt 44 to drive multiple groups of synchronous gear plates 4 to rotate synchronously and then drive multiple groups of rotating rods 41 to rotate synchronously. The rotating rod 41 drives the fan blades 42 to rotate at the top of the heat dissipation cavity 2. When rotating, the fan blades 42 can effectively accelerate the air flow speed in the heat dissipation cavity 2, thereby ventilating and cooling the charging gun body 1.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 7As shown, as a preferred embodiment of the present invention, the first lifting part 611 includes a plurality of groups of annularly distributed threaded rods 6111 rotatably installed between the top wall and the bottom wall of the heat dissipation cavity 2, the threaded rods 6111 are threadedly connected to the carrying ring 5, and the surface of the threaded rod 6111 is provided with a transmission gear disc 6112 meshing with the synchronous gear disc 43, the transmission gear disc 6112 is sleeved on the outside of the threaded rod 6111, and the adjusting part 612 is located on the surface of the threaded rod 6111 and is connected to the transmission gear disc 6112.

[0029] Initially, the adjustment part 6121 positions the transmission gear disc 6112. At this time, the transmission gear disc 6112 is below the synchronous gear disc 43. The rotation of the rotating rod 41 and the synchronous gear disc 43 will not interfere with the transmission gear disc 6112. When the cooling speed needs to be further increased, the adjustment part 612 controls the transmission gear disc 6112 to move upward on the surface of the threaded rod 6111, so that the transmission gear disc 6112 is meshed and connected with the adjacent synchronous gear disc 43. At this time, the synchronous gear disc 43 and the transmission gear disc 6112 are meshed and transmitted, which can drive the threaded rod 6111 to rotate. Multiple groups of threaded rods 6111 cooperate with each other to drive the carrying ring 5 to move back and forth in the vertical direction in the heat dissipation cavity 2.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 As shown, as a preferred embodiment of the present invention, the adjusting portion 612 includes a plurality of groups of annularly distributed vertical grooves 6121 opened on the surface of the threaded rod 6111, a limit block 6122 is fixedly installed on the inner side wall of the transmission gear plate 6112, the limit block 6122 is slidably connected with the vertical groove 6121 along the vertical direction, an annular groove 6123 is opened on the surface of the transmission gear plate 6112, the longitudinal section of the annular groove 6123 is an inverted T-shaped structure, a sliding block 6124 is slidably installed in the annular groove 6123, the sliding block 6124 extends to the top of the transmission gear plate 6112 and is fixedly installed with a vertical rod 6125, the top end of the vertical rod 6125 extends to the outside of the charging gun body 1 and is fixedly installed with a top ring 6126, the bottom wall of the top ring 6126 is rotatably installed with a clamping rod 6127, and the top wall of the charging gun body 1 is opened with a clamping groove 6128 that cooperates with the clamping rod 6127.

[0031] Initially, the limit block 6122 is at the bottom of the vertical groove 6121. At this time, the transmission gear plate 6112 is located below the synchronous gear plate 43. When it is necessary to improve the cooling efficiency of the charging gun body 1, the top ring 6126 is pulled upward on the surface of the charging gun body 1 so that the clamping rod 6127 is inserted into the clamping groove 6128. When the top ring 6126 moves upward, it cooperates with the vertical rod 6125 to pull the transmission gear plate 6112 to move upward synchronously on the surface of the threaded rod 6111. At this time, the transmission gear plate 6112 and the synchronous gear plate 43 are engaged with each other. When it is necessary to stop cooling, the clamping rod 6127 is controlled to separate from the clamping groove 6128, and the top ring 6126 is pushed downward. The top ring 6126 cooperates with the vertical rod 6125 to control the transmission gear plate 6112 to move downward on the surface of the threaded rod 6111. At this time, the transmission gear plate 6112 and the synchronous gear plate 43 are separated from each other, and the threaded rod 6111 stops rotating.

[0032] like Figure 2 , Figure 5 , Figure 6 As shown, as a preferred embodiment of the present invention, the guide portion 622 includes a plurality of guide rods 6221 fixedly installed on the bottom wall of the carrying ring 5, the guide rods 6221 are slidably connected to the bottom plate 621 along the vertical direction, and a baffle 6222 located below the bottom plate 621 is fixedly installed at the bottom end of the guide rods 6221.

[0033] Multiple groups of guide rods 6221 cooperate with baffles 6222 to support and position the bottom plate 621, so that the bottom plate 621 is stably located below the sea surface pad 51. When the carrying ring 5 moves upward in the heat dissipation chamber 2, the second lifting part 623 controls the bottom plate 621 to move upward synchronously under the carrying ring 5. The bottom plate 621 cooperates with the carrying ring 5 to continuously squeeze the sponge pad 51 after absorbing water, so that the sponge pad 51 and the side wall of the heat dissipation chamber 2 fit each other, and control the water in the sponge pad 51 to be evenly wiped to the side wall of the heat dissipation chamber 2. The charging gun body 1 can be efficiently cooled by absorbing heat through water evaporation.

[0034] like Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, as a preferred embodiment of the present invention, the second lifting part 623 includes side plates 6231 fixedly installed on the surface of the carrying ring 5 and located directly above the sponge pad 51, and the two sets of side plates 6231 distributed opposite to each other are installed with a rotating rod 6232 that rotates together. A winding roller 6233 is fixedly installed on the surface of the rotating rod 6232, and a pulling rope 6234 is wound on the surface of the winding roller 6233. One end of the pulling rope 6234 away from the winding roller 6233 passes downward through the carrying ring 5 and the sponge pad 51 and is connected to the bottom plate 621. One end of the rotating rod 6232 extends to the outside of the side plate 6231 and is fixedly installed with a fixed toothed disc 6235. A rack 6236 is fixedly installed between the top wall and the bottom wall of the heat dissipation cavity 2, and the rack 6236 is meshed and connected with the fixed toothed disc 6235.

[0035] When the carrying ring 5 moves upward in the heat dissipation chamber 2, it will drive the fixed toothed disc 6235 to move upward synchronously. The fixed toothed disc 6235 rolls along the surface of the rack 6236. The fixed toothed disc 6235 drives the rotating rod 6232 and the winding roller 6233 to rotate synchronously. The winding roller 6233 continuously winds up the pulling rope 6234. The pulling rope 6234 pulls the bottom plate 621 to move upward under the carrying ring 5. The bottom plate 621 and the carrying ring 5 cooperate with each other to continuously squeeze the sponge pad 51 after absorbing water.

[0036] like Figure 5 , Figure 6 As shown, as a preferred embodiment of the present invention, an extrusion spring piece 7 cooperating with the sponge pad 51 is fixedly installed between the bottom wall of the carrying ring 5 and the top wall of the bottom plate 621 .

[0037] When the bottom plate 621 and the carrying ring 5 squeeze the sponge pad 51 , the squeezing spring sheet 7 can push the sponge pad 51 , so that the sponge pad 51 and the side wall of the heat dissipation cavity 2 fit each other, thereby further squeezing out the water.

[0038] The working principle of the present invention is: when in use, a proper amount of water is injected into the water storage chamber 3 through the water injection port 31. Initially, the bearing ring 5 is located at the bottom of the heat dissipation chamber 2, and the sponge pad 51 below the bearing ring 5 is inserted into the water storage chamber 3. At this time, the connecting groove 32 is in a sealed state. When the charging gun body 1 needs to be initially cooled, the motor 45 drives a group of rotating rods 41 to rotate and then drives the synchronous gear disc 43 to rotate. The synchronous gear disc 43 cooperates with the synchronous belt 44 to drive multiple groups of synchronous gear discs 4 to rotate synchronously and then drive multiple groups of rotating rods 41 to rotate synchronously. The rotating rod 41 drives the fan blades 42 to rotate at the top of the heat dissipation chamber 2. When the fan blades 42 rotate, they can effectively accelerate the air flow speed in the heat dissipation chamber 2, thereby ventilating and cooling the charging gun body 1. At this time, the transmission gear disc 6112 is below the synchronous gear disc 43, and the rotation of the rotating rod 41 and the synchronous gear disc 43 will not interfere with the transmission gear disc 6112.

[0039] When it is necessary to improve the cooling efficiency of the charging gun body 1, the top ring 6126 is pulled upward on the surface of the charging gun body 1 so that the clamping rod 6127 is inserted into the clamping groove 6128. When the top ring 6126 moves upward, it cooperates with the vertical rod 6125 to pull the transmission gear plate 6112 to move upward synchronously on the surface of the threaded rod 6111. At this time, the transmission gear plate 6112 and the synchronous gear plate 43 are engaged with each other, which can drive the threaded rod 6111 to rotate. Multiple groups of threaded rods 6111 cooperate with each other to drive the load-bearing ring 5 to move back and forth in the vertical direction in the heat dissipation cavity 2. When the bearing ring 5 moves upward in the heat dissipation chamber 2, it will drive the sponge pad 51 to move upward synchronously. The sponge pad 51 absorbs a proper amount of water. When the bearing ring 5 drives the sponge pad 51 to move upward, the fixed toothed disc 6235 rolls along the surface of the rack 6236. The fixed toothed disc 6235 drives the rotating rod 6232 and the winding roller 6233 to rotate synchronously. The winding roller 6233 continuously rewinds the pulling rope 6234. The pulling rope 6234 pulls the bottom plate 621 to move upward under the bearing ring 5. The bottom plate 621 cooperates with the bearing ring 5 to continuously squeeze the sponge pad 51 after absorbing water. The sponge pad 51 is made to fit the side wall of the heat dissipation chamber 2, and the water in the sponge pad 51 is evenly wiped to the side wall of the heat dissipation chamber 2. The charging gun body 1 can be efficiently cooled by evaporating water and absorbing heat.

[0040] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An active liquid cooling device for a high-voltage DC charging gun, comprising a charging gun body, wherein an annular heat dissipation cavity is provided inside the charging gun body, a ventilation hole connected to the heat dissipation cavity is provided inwardly on the side wall of the charging gun body, a water storage cavity is provided inside the charging gun body below the heat dissipation cavity, the water storage cavity is an annular structure, a water injection port connected to the water storage cavity is provided inwardly on the side wall of the charging gun body, and a connecting groove connected to the water storage cavity is provided downwardly on the bottom wall of the heat dissipation cavity, characterized in that: A blowing assembly is provided at the top of the heat dissipation cavity, and the blowing assembly is used to accelerate the air flow in the heat dissipation cavity. A bearing ring is slidably installed in the heat dissipation cavity along the vertical direction, and a sponge pad is fixedly installed on the bottom wall of the bearing ring. A control mechanism that cooperates with the bearing ring is provided in the heat dissipation cavity, and the control mechanism includes a positioning assembly and a dehydration assembly. The positioning assembly includes a first lifting part and an adjusting part. The first lifting part is located in the heat dissipation cavity and connected to the bearing ring. The adjusting part is connected to the first lifting part. The adjusting part controls the bearing ring to reciprocate in the vertical direction in the heat dissipation cavity by cooperating with the first lifting part. The dehydration assembly includes a bottom plate, a guide part and a second lifting part. The guide part is located on the bottom wall of the bearing ring and connected to the bottom plate. The guide part is used to control the bottom plate to be in a horizontal state and below the sponge pad. The second lifting part is located on the surface of the bearing ring and connected to the bottom plate. When the bearing ring moves in the heat dissipation cavity along the vertical direction, the second lifting part controls the bottom plate to move synchronously in the vertical direction below the bearing ring by cooperating with the guide part.

2. The active liquid cooling device for a high-voltage DC charging gun according to claim 1, characterized in that: The blowing assembly includes multiple groups of rotating rods distributed in a ring and rotatably installed on the top wall of the heat dissipation cavity, multiple groups of fan blades are arranged on the surface of the rotating rods, synchronous gear plates are fixedly installed on the surface of the rotating rods, and synchronous belts are commonly installed on the outer sides of the multiple groups of synchronous gear plates. The top end of one group of rotating rods extends to the outside of the charging gun body and is connected to a motor.

3. The active liquid cooling device for a high-voltage DC charging gun according to claim 2, characterized in that: The first lifting part includes a plurality of groups of annularly distributed threaded rods rotatably installed between the top wall and the bottom wall of the heat dissipation cavity, the threaded rods are threadedly connected to the load-bearing ring, and the surface of the threaded rod is provided with a transmission gear disc engaged with the synchronous gear disc, and the transmission gear disc is sleeved on the outside of the threaded rod, and the adjustment part is located on the surface of the threaded rod and is connected to the transmission gear disc.

4. The active liquid cooling device for a high-voltage DC charging gun according to claim 3, characterized in that: The adjustment part includes a plurality of groups of vertical grooves in an annular distribution opened on the surface of the threaded rod, a limit block is fixedly installed on the inner side wall of the transmission gear disc, the limit block is slidably connected with the vertical groove along the vertical direction, an annular groove is opened on the surface of the transmission gear disc, the longitudinal section of the annular groove is an inverted T-shaped structure, a sliding block is slidably installed in the annular groove, the sliding block extends to the top of the transmission gear disc and is fixedly installed with a vertical rod, the top end of the vertical rod extends to the outside of the charging gun body and is fixedly installed with a top ring, the bottom wall of the top ring is rotatably installed with a clamping rod, and the top wall of the charging gun body is opened with a clamping groove that cooperates with the clamping rod.

5. The active liquid cooling device for a high-voltage DC charging gun according to claim 1, characterized in that: The guide part includes a plurality of guide rods fixedly mounted on the bottom wall of the bearing ring. The guide rods are slidably connected with the bottom plate in the vertical direction. A baffle located below the bottom plate is fixedly mounted on the bottom end of the guide rods.

6. The active liquid cooling device for a high-voltage DC charging gun according to claim 5, characterized in that: The second lifting part includes two side plates that are fixedly installed on the surface of the carrying ring and are located directly above the sponge pad. The two sets of side plates that are relatively distributed are equipped with a rotating rod that rotates together. A winding roller is fixedly installed on the surface of the rotating rod. A pulling rope is wound on the surface of the winding roller. One end of the pulling rope away from the winding roller passes downward through the carrying ring and the sponge pad and is connected to the bottom plate. One end of the rotating rod extends to the outside of the side plate and is fixedly installed with a fixed toothed disk. A rack is fixedly installed between the top wall and the bottom wall of the heat dissipation cavity, and the rack is meshed and connected with the fixed toothed disk.

7. The active liquid cooling device for a high-voltage DC charging gun according to claim 1, characterized in that: An extrusion spring sheet that cooperates with the sponge pad is fixedly installed between the bottom wall of the bearing ring and the top wall of the bottom plate.

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