Electric vehicle charger with dust removal function

Abstract

The present application relates to an electric vehicle charger with a dust removal function, including a shell with an inner cavity, a circuit board and a fan installed in the inner cavity, a toggle assembly, a gas compression assembly and a dust removal assembly, the circuit board has a toggle switch for controlling the forward and reverse rotation of the fan, the toggle assembly is used to control the toggle of the switch; the gas compression assembly is used to compress the gas and pass it to the dust removal assembly when the fan blows toward the air inlet side, the dust removal assembly has a plurality of compression nozzles, and the compression nozzles are used to spray the compressed gas onto the components of the circuit board. The switch is toggled by the toggle assembly to reverse the fan, at which time the gas compression assembly will act on the fan, and the high-pressure gas will be sprayed onto the components of the circuit board, which can blow away the dust attached to it; then the toggle assembly toggles the switch again to reverse the fan back to the normal heat dissipation state, which can immediately bring the dust blown on the components out of the inner cavity, thereby timely cleaning the dust attached to the electronic components.

Description

Technical Field

[0001] The invention relates to the field of electric vehicle charging, and in particular to an electric vehicle charger with a dust removal function. Background Art

[0002] An electric vehicle charger is a charging device specially configured for the battery of an electric bicycle.

[0003] The internal electronic components of the charger will generate a certain amount of heat during operation, which needs to be dissipated into the surrounding air through the cooling fan.

[0004] Existing chargers have air inlets and outlets at both ends of the housing, and cooling fans are installed near the outlets. However, over time, some dust will enter the housing through the air inlet and adhere to the electronic components. If the electronic components are covered with dust for a long time, the heat dissipation will be poor, resulting in the temperature of the electronic devices rising, aggravating the aging of electronic products, and even causing safety hazards such as fire. Summary of the invention

[0005] In order to be able to clean the dust attached to the electronic components in time, the present application provides an electric vehicle charger with a dust removal function.

[0006] The electric vehicle charger with dust removal function provided in this application adopts the following technical solution:

[0007] An electric vehicle charger with a dust removal function, comprising a shell with an inner cavity, wherein two ends of the shell are respectively provided with an air inlet and an air outlet, a circuit board and a fan are installed in the inner cavity, the fan is arranged near one side of the shell air outlet, the fan is facing the air outlet, and further comprising a toggle assembly, a gas compression assembly and a dust removal assembly, wherein the circuit board has a toggle switch for controlling the forward and reverse rotation of the fan, and the toggle assembly is used to control the toggle of the switch;

[0008] The gas compression component is used to compress the gas blown out by the fan and transfer it to the dust removal component when the fan blows air toward the air inlet side. The dust removal component is provided with multiple compression nozzles, and the compression nozzles are used to spray compressed gas onto components of the circuit board.

[0009] By adopting the above technical solution, when the electric vehicle charger dissipates heat normally, the fan will blow toward one side of the air outlet to bring out the heat in the shell. The fan will be reversed by turning the switch by the toggle component. At this time, the gas compression component will act on the fan to compress the blown gas and then pass it to the dust removal component. The dust removal component will spray high-pressure gas to the components of the circuit board, which can blow away the dust attached to it; then the toggle component will turn the switch again to reverse the fan back to the normal heat dissipation state, which can immediately bring the dust blown on the components out of the inner cavity, thereby cleaning the dust attached to the electronic components in time.

[0010] Preferably, the toggle assembly includes a controller, a first motor and a toggle rod, the first motor is fixedly disposed on the bottom wall of the inner cavity, the controller is used to control the operation of the first motor, the toggle rod is fixedly disposed on the output shaft of the first motor, the toggle path of the switch is located on the rotation path of the toggle rod, and the toggle rod is used to toggle the switch.

[0011] By adopting the above technical solution, the rotation of the toggle lever is driven by the forward and reverse rotation of the first motor, so that the toggle lever toggles the switch, wherein the controller is mainly used to control the operating time of the toggle component. For example, after normal charging and normal heat dissipation for a certain period of time, the toggle component is controlled to toggle the switch to switch to the dust removal mode, and then after the dust removal for a certain period of time, it is switched to the normal heat dissipation mode, and this reciprocating process can be used to clean the dust attached to the electronic components in time.

[0012] Preferably, the gas compression assembly comprises a compression hood, a movable frame, a connecting pipe and a driving member, the movable frame is slidably connected to the housing in a direction perpendicular to the rotation axis of the fan, the driving member is used to drive the movement of the movable frame, the compression hood is fixedly arranged on the movable frame, the compression hood is located on a side of the fan away from the air outlet, the compression hood is arranged in a conical shape, one end of the connecting pipe is connected to the rear end of the compression hood, and the other end of the connecting pipe is connected to the dust removal assembly;

[0013] The fan comprises a frame and a blowing assembly, wherein the frame is arranged in the housing, the blowing assembly is arranged in the frame, and the frame surrounds the blowing assembly;

[0014] When the fan blows toward the air outlet, the compression hood moves to the outside of the blowing assembly and the circuit board; when the fan blows toward the air inlet, the compression hood moves between the fan and the circuit board, and the open end of the fan abuts against the frame and covers the blowing assembly.

[0015] By adopting the above technical solution, when the fan blows air toward the air inlet side, the driving member drives the movable frame to move toward the fan side, and finally the open end of the fan abuts against the frame and covers the blowing assembly; when the fan blows air toward the air outlet side, the driving member drives the movable frame to move toward the side away from the fan, and finally the compression cover moves to the outside of the blowing assembly and the circuit board.

[0016] Preferably, a first inclined surface is provided on the side surface of the frame facing the air inlet, and a second inclined surface matching the first inclined surface is provided on the open end of the compression cover, and when the compression cover moves between the fan and the circuit board, the first inclined surface and the second inclined surface abut against each other.

[0017] By adopting the above technical solution, the compression hood can better fit the frame through the mutual abutment of the first inclined surface and the second inclined surface, and the wind blown by the fan can enter the compression hood more, thereby improving the efficiency of gas compression.

[0018] Preferably, the driving member 1 includes a rotating rod, a fixed ring, a transmission belt, a first gear and a rack, the fixed ring is coaxially fixedly connected to the output shaft of the first motor, the rotating rod is rotatably connected in a direction parallel to the rotation axis of the first motor and is connected in the shell, the transmission belt is transmission-connected to the rotating rod and the fixed ring, the diameter of the fixed ring is larger than the diameter of the rotating rod, the first gear is coaxially sleeved on the rotating rod, the rack is fixedly arranged on the movable frame, and the first gear and the rack are meshed with each other.

[0019] By adopting the above technical solution, the first motor rotates to drive the toggle rod to toggle the switch. At the same time, the first motor drives the rotating rod to rotate through the fixed ring and the transmission belt. The rotating rod then drives the gear to rotate. The gear drives the meshing rack to move. The rack then drives the movable frame and the compression cover to move.

[0020] Preferably, the dust removal assembly includes a cross bar and a plurality of compression nozzles, the cross bar is arranged in the inner cavity, the length direction of the cross bar is parallel to the length direction of the circuit board, a compression air duct is opened in the cross bar along the length direction, the end of the connecting pipe away from the compression cover is connected to the compression air duct, and the plurality of compression nozzles are distributed in sequence along the length direction of the cross bar, the cross bar and the compression nozzles are both located on the outside in the width direction of the circuit board, and the compression nozzles are located above the circuit board and inclined toward one side of the circuit board.

[0021] By adopting the above technical solution, the gas blown out by the fan is compressed in the compression hood and then enters the compression air duct through the connecting pipe, and then is ejected from multiple compression nozzles, which can form a high-pressure airflow to spray toward the components of the circuit board, and is easier to blow away the dust attached to it than ordinary wind.

[0022] Preferably, it further comprises a driving assembly for driving the crossbar to move in a circumferential direction, the driving assembly comprising a padding block, a second motor, a second gear, a third gear, a rivet and a telescopic rod, the padding block is arranged on the inner wall of the housing along a length direction parallel to the crossbar, the padding block is located outside the circuit board and directly below the crossbar;

[0023] The second motor is fixedly arranged on the padding block, the controller controls the second motor to start when the fan blows toward the air inlet side, the axis direction of the output shaft of the second motor is parallel to the width direction of the circuit board, the second gear is coaxially fixedly connected to the output shaft of the second motor, the third gear is rotatably connected in the housing around a direction parallel to the rotation axis of the second gear, the third gear is located directly above the second gear and meshes with the second gear; the crossbar is rotatably connected to the second gear through rivets;

[0024] A sliding groove is provided on the raising block along the length direction, and the telescopic rod includes a first rod and a second rod whose ends are slidably connected to each other, an end of the first rod away from the second rod is fixedly arranged on the cross bar, and an end of the second rod away from the first rod is slidably connected in the sliding groove along the length direction of the sliding groove.

[0025] By adopting the above technical solution, the output shaft of the second motor rotates to drive the second gear to rotate, the second gear drives the meshing third gear to rotate, and the third gear drives the cross bar to perform circular motion through the rivet. With the cooperation of the telescopic rod and the slide groove, the cross bar can always remain parallel to the length direction of the circuit board when performing circular motion; the blowing range of the compression nozzle can be increased to blow as many electronic components as possible.

[0026] The technical effects of the present invention are mainly reflected in the following aspects:

[0027] 1. When the electric vehicle charger of the present invention is dissipating heat normally, the fan will blow toward one side of the air outlet to take out the heat in the shell. The switch is toggled by the toggle assembly to reverse the fan. At this time, the gas compression assembly will act on the fan to compress the blown gas and then pass it to the dust removal assembly. The dust removal assembly sprays high-pressure gas to the components of the circuit board, which can blow away the dust attached to it; then the toggle assembly toggles the switch again to reverse the fan back to the normal heat dissipation state, which can immediately take the dust blown on the components out of the inner cavity, thereby timely cleaning the dust attached to the electronic components;

[0028] 2. The present invention drives the rotation of the toggle lever through the forward and reverse rotation of the first motor, so that the toggle lever toggles the switch, wherein the controller is mainly used to control the operating time of the toggle component. For example, after normal charging and normal heat dissipation for a certain period of time, the toggle component is controlled to toggle the switch to switch to the dust removal mode, and then after the dust removal for a certain period of time, it is switched to the normal heat dissipation mode, and this reciprocating process is used to clean the dust attached to the electronic components in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the structure inside the shell of the embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the structure of the driving component of the embodiment of the present application.

[0032] Explanation of the reference numerals: 11. power plug; 12. output plug; 13. shell; 131. inner cavity; 132. air inlet; 133. air outlet; 2. circuit board; 21. switch; 3. fan; 31. frame; 311. first inclined surface; 4. toggle assembly; 41. first motor; 42. toggle rod; 5. gas compression assembly; 51. compression cover; 511. second inclined surface; 52. movable frame; 53. connecting pipe; 6. driving member 1; 61. rotating rod; 62. fixing ring; 63. transmission belt; 64. first gear; 65. rack; 7. dust removal assembly; 71. cross bar; 72. compression nozzle; 8. driving assembly; 81. pad block; 811. slide groove; 82. second motor; 83. second gear; 84. third gear; 85. rivet; 86. telescopic rod; 861. first rod; 862. second rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-Figure 3 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0034] The embodiment of the present application discloses an electric vehicle charger with a dust removal function.

[0035] Reference Figure 1-Figure 3 In this embodiment, an electric vehicle charger with a dust removal function includes a power plug 11, an output plug 12, and a shell 13 with an inner cavity 131. The two ends of the shell 13 are respectively an air inlet 132 and an air outlet 133. A circuit board 2 and a fan 3 are installed in the inner cavity 131. The fan 3 is arranged close to the air outlet 133 of the shell 13, and the fan 3 is facing the air outlet 133.

[0036] Reference Figure 1-Figure 3In this embodiment, an electric vehicle charger with a dust removal function further includes a toggle assembly 4, a gas compression assembly 5 and a dust removal assembly 7. A toggle switch 21 for controlling the forward and reverse rotation of the fan 3 is provided on the circuit board 2. The toggle assembly 4 is used to control the toggle of the switch 21.

[0037] Reference Figure 1 and Figure 2 The gas compression component 5 is used to compress the gas blown out by the fan 3 and pass it to the dust removal component 7 when the fan 3 blows air toward the side of the air inlet 132. The dust removal component 7 has multiple compression nozzles 72, and the compression nozzles 72 are used to spray compressed gas onto the components of the circuit board 2.

[0038] Reference Figure 1 and Figure 2 When the electric vehicle charger is dissipating heat normally, the fan 3 will blow toward the side of the air outlet 133 to bring out the heat in the shell 13. The switch 21 is toggled by the toggle component 4 to reverse the fan 3. At this time, the gas compression component 5 will act on the fan 3 to compress the blown gas and then pass it to the dust removal component 7. The dust removal component 7 sprays high-pressure gas to the components of the circuit board 2 to blow away the dust attached to it; then the toggle component 4 toggles the switch 21 again to reverse the fan 3 back to the normal heat dissipation state, which can immediately bring the dust blown on the components out of the inner cavity 131, thereby timely cleaning the dust attached to the electronic components.

[0039] Reference Figure 1 and Figure 2 The toggle assembly 4 includes a controller, a first motor 41 and a toggle rod 42. The controller is arranged in the shell 13. The first motor 41 is fixedly arranged on the bottom wall of the inner cavity 131. The controller is used to control the operation of the first motor 41. The toggle rod 42 is fixedly arranged on the output shaft of the first motor 41. The toggle path of the switch 21 is located on the rotation path of the toggle rod 42. The toggle rod 42 is used to toggle the switch 21.

[0040] Reference Figure 1 and Figure 2 The first motor 41 is used to drive the toggle lever 42 to rotate by forward and reverse rotation, so that the toggle lever 42 toggles the switch 21. The controller is mainly used to control the operation time of the toggle component 4. For example, after normal charging and normal heat dissipation for a certain period of time, the toggle component 4 is controlled to toggle the switch 21 to switch to the dust removal mode. After the dust removal is performed for a certain period of time, it is switched to the normal heat dissipation mode. This reciprocating process can timely clean the dust attached to the electronic components.

[0041] Reference Figure 1 and Figure 2The gas compression assembly 5 includes a compression cover 51, a movable frame 52, a connecting pipe 53 and a driving member 6. The movable frame 52 is slidably connected to the shell 13 along a direction perpendicular to the rotation axis of the fan 3. The driving member 6 is used to drive the movement of the movable frame 52. The compression cover 51 is fixedly set on the movable frame 52. The compression cover 51 is located on the side of the fan 3 away from the air outlet 133. The compression cover 51 is set in a cone shape. One end of the connecting pipe 53 is connected to the tail end of the compression cover 51, and the other end of the connecting pipe 53 is connected to the dust removal assembly 7.

[0042] Reference Figure 1 and Figure 2 The fan 3 includes a frame 31 and a blowing assembly. The frame 31 is arranged in the housing 13, and the blowing assembly is arranged in the frame 31. The frame 31 surrounds the blowing assembly. The blowing assembly is composed of a motor and a fan blade, which is a common structure and is not described here. The toggle switch 21 can control the forward and reverse rotation of the motor. At the same time, by setting, the fan 3 can increase the speed of the motor when blowing toward the side of the air inlet 132 to achieve a better dust blowing effect.

[0043] Reference Figure 1 and Figure 2 When the fan 3 blows air toward the air outlet 133, the compression cover 51 moves to the outside of the blowing assembly and the circuit board 2; when the fan 3 blows air toward the air inlet 132, the compression cover 51 moves between the fan 3 and the circuit board 2, and the open end of the fan 3 abuts against the frame 31 and covers the blowing assembly.

[0044] Reference Figure 1 and Figure 2 When the fan 3 blows air toward the air inlet 132, the driving member 6 drives the movable frame 52 to move toward the fan 3, and finally the open end of the fan 3 abuts against the frame 31 and covers the blowing assembly; when the fan 3 blows air toward the air outlet 133, the driving member 6 drives the movable frame 52 to move toward the side away from the fan 3, and finally the compression cover 51 moves to the outside of the blowing assembly and the circuit board 2.

[0045] Reference Figure 1 and Figure 2 A first inclined surface 311 is provided on the side surface of the frame 31 facing the air inlet 132, and a second inclined surface 511 matching the first inclined surface 311 is provided on the open end of the compression cover 51. When the compression cover 51 moves between the fan 3 and the circuit board 2, the first inclined surface 311 and the second inclined surface 511 abut against each other.

[0046] Reference Figure 1 and Figure 2 By abutting the first inclined surface 311 and the second inclined surface 511 , the compression cover 51 can be better fitted to the frame 31 , and more wind blown by the fan 3 can enter the compression cover 51 , thereby improving the efficiency of gas compression.

[0047] Reference Figure 1 and Figure 2 The driving member 6 includes a rotating rod 61, a fixing ring 62, a transmission belt 63, a first gear 64 and a rack 65. The fixing ring 62 is coaxially fixedly connected to the output shaft of the first motor 41. The rotating rod 61 is rotatably connected in a direction parallel to the rotation axis of the first motor 41 and is connected in the housing 13. The transmission belt 63 is transmission-connected to the rotating rod 61 and the fixing ring 62. The diameter of the fixing ring 62 is larger than the diameter of the rotating rod 61. The first gear 64 is coaxially sleeved on the rotating rod 61. The rack 65 is fixedly arranged on the moving frame 52. The first gear 64 and the rack 65 are meshed and connected with each other.

[0048] Reference Figure 1 and Figure 2 When the first motor 41 rotates and drives the toggle rod 42 to toggle the switch 21, the first motor 41 drives the rotating rod 61 to rotate through the fixing ring 62 and the transmission belt 63, and the rotating rod 61 drives the gear to rotate, and the gear drives the meshing rack 65 to move, and the rack 65 drives the moving frame 52 and the compression cover 51 to move.

[0049] Reference Figure 2 and Figure 3 The dust removal assembly 7 includes a cross bar 71 and a plurality of compression nozzles 72. The cross bar 71 is arranged in the inner cavity 131. The length direction of the cross bar 71 is parallel to the length direction of the circuit board 2. A compression air duct is opened in the cross bar 71 along the length direction. The end of the connecting pipe 53 away from the compression cover 51 is connected to the compression air duct. The plurality of compression nozzles 72 are distributed in sequence along the length direction of the cross bar 71. The cross bar 71 and the compression nozzles 72 are both located on the outside of the circuit board 2 in the width direction. The compression nozzles 72 are located above the circuit board 2 and are inclined toward one side of the circuit board 2.

[0050] Reference Figure 2 and Figure 3 The gas blown out by the fan 3 is compressed in the compression cover 51 and then enters the compression airway through the connecting pipe 53, and then is ejected from multiple compression nozzles 72, which can form a high-pressure airflow to spray toward the components of the circuit board 2, and is easier to blow away the dust attached thereon than ordinary wind.

[0051] Reference Figure 2 and Figure 3 , and also includes a driving assembly 8 for driving the cross bar 71 to move in a circumferential direction. The driving assembly 8 includes a pad block 81, a second motor 82, a second gear 83, a third gear 84, a rivet 85 and a telescopic rod 86. The pad block 81 is arranged on the inner wall of the shell 13 along a length direction parallel to the cross bar 71. The pad block 81 is located on the outside of the circuit board 2 and directly below the cross bar 71.

[0052] Reference Figure 2 and Figure 3 The second motor 82 is fixedly arranged on the pad block 81. The controller controls the second motor 82 to start when the fan 3 blows toward the air inlet 132. The axial direction of the output shaft of the second motor 82 is parallel to the width direction of the circuit board 2. The second gear 83 is coaxially fixedly connected to the output shaft of the second motor 82. The third gear 84 is rotatably connected in the housing 13 around a direction parallel to the rotation axis of the second gear 83. The third gear 84 is located directly above the second gear 83 and is meshed with the second gear 83. The cross bar 71 and the second gear 83 are rotatably connected by a rivet 85.

[0053] Reference Figure 2 and Figure 3 A slide groove 811 is provided on the raising block 81 along the length direction, and the telescopic rod 86 includes a first rod 861 and a second rod 862 whose one ends are slidably connected to each other. The end of the first rod 861 away from the second rod 862 is fixedly arranged on the cross bar 71, and the end of the second rod 862 away from the first rod 861 is slidably connected in the slide groove 811 along the length direction of the slide groove 811.

[0054] Reference Figure 2 and Figure 3 The output shaft of the second motor 82 rotates to drive the second gear 83 to rotate, the second gear 83 drives the meshing third gear 84 to rotate, and the third gear 84 drives the cross bar 71 to make a circular motion through the rivet 85. With the cooperation of the telescopic rod 86 and the slide slot 811, the cross bar 71 can always keep parallel to the length direction of the circuit board 2 when making a circular motion. The blowing range of the compression nozzle 72 can be increased to blow as many electronic components as possible.

[0055] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. An electric vehicle charger with a dust removal function, comprising a housing (13) with an inner cavity (131), the housing (13) having an air inlet (132) and an air outlet (133) at both ends, a circuit board (2) and a fan (3) installed in the inner cavity (131), the fan (3) being arranged close to one side of the air outlet (133) of the housing (13), and the fan (3) facing the air outlet (133), characterized in that: It also comprises a toggle assembly (4), a gas compression assembly (5) and a dust removal assembly (7); the circuit board (2) has a toggle switch (21) for controlling the forward and reverse rotation of the fan (3); the toggle assembly (4) is used to control the toggle of the switch (21); The gas compression component (5) is used to compress the gas blown out by the fan (3) and transfer it to the dust removal component (7) when the fan (3) blows air toward the side of the air inlet (132). The dust removal component (7) has a plurality of compression nozzles (72). The compression nozzles (72) are used to spray compressed gas onto components of the circuit board (2).

2. The electric vehicle charger with dust removal function according to claim 1, characterized in that: The toggle assembly (4) comprises a controller, a first motor (41) and a toggle rod (42); the first motor (41) is fixedly arranged on the bottom wall of the inner cavity (131); the controller is used to control the operation of the first motor (41); the toggle rod (42) is fixedly arranged on the output shaft of the first motor (41); the toggle path of the switch (21) is located on the rotation path of the toggle rod (42); and the toggle rod (42) is used to toggle the switch (21).

3. The electric vehicle charger with dust removal function according to claim 2, characterized in that: The gas compression assembly (5) comprises a compression cover (51), a movable frame (52), a connecting pipe (53) and a driving member (6); the movable frame (52) is slidably connected to the housing (13) in a direction perpendicular to the rotation axis of the fan (3); the driving member (6) is used to drive the movable frame (52) to move; the compression cover (51) is fixedly arranged on the movable frame (52); the compression cover (51) is located on a side of the fan (3) away from the air outlet (133); the compression cover (51) is arranged in a conical shape; one end of the connecting pipe (53) is connected to the rear end of the compression cover (51); and the other end of the connecting pipe (53) is connected to the dust removal assembly (7); The fan (3) comprises a frame (31) and a blowing assembly, wherein the frame (31) is arranged in the housing (13), the blowing assembly is arranged in the frame (31), and the frame (31) surrounds the blowing assembly; When the fan (3) blows air toward the air outlet (133), the compression cover (51) moves to the outside of the air blowing assembly and the circuit board (2); when the fan (3) blows air toward the air inlet (132), the compression cover (51) moves between the fan (3) and the circuit board (2), and the open end of the fan (3) abuts against the frame (31) and covers the air blowing assembly.

4. The electric vehicle charger with dust removal function according to claim 3, characterized in that: A first inclined surface (311) is provided on a side surface of the frame (31) facing the air inlet (132), and a second inclined surface (511) matching the first inclined surface (311) is provided on an open end of the compression cover (51), and when the compression cover (51) moves between the fan (3) and the circuit board (2), the first inclined surface (311) and the second inclined surface (511) abut against each other.

5. The electric vehicle charger with dust removal function according to claim 3, characterized in that: The driving member 1 (6) comprises a rotating rod (61), a fixing ring (62), a transmission belt (63), a first gear (64) and a rack (65); the fixing ring (62) is coaxially fixedly connected to the output shaft of the first motor (41); the rotating rod (61) is rotatably connected in a direction parallel to the rotation axis of the first motor (41) and is connected in the housing (13); the transmission belt (63) is transmission-connected to the rotating rod (61) and the fixing ring (62); the diameter of the fixing ring (62) is larger than the diameter of the rotating rod (61); the first gear (64) is coaxially sleeved on the rotating rod (61); the rack (65) is fixedly arranged on the moving frame (52); and the first gear (64) and the rack (65) are meshedly connected with each other.

6. The electric vehicle charger with dust removal function according to claim 3, characterized in that: The dust removal assembly (7) comprises a cross bar (71) and a plurality of compression nozzles (72); the cross bar (71) is arranged in the inner cavity (131); the length direction of the cross bar (71) is parallel to the length direction of the circuit board (2); a compression air passage is provided in the cross bar (71) along the length direction; one end of the connecting pipe (53) away from the compression cover (51) is connected to the compression air passage; the plurality of compression nozzles (72) are distributed in sequence along the length direction of the cross bar (71); the cross bar (71) and the compression nozzles (72) are both located on the outside of the circuit board (2) in the width direction; and the compression nozzles (72) are located above the circuit board (2) and are arranged to be inclined toward one side of the circuit board (2).

7. The electric vehicle charger with dust removal function according to claim 6, characterized in that: The invention also comprises a driving assembly (8) for driving the cross bar (71) to move in a circumferential direction, wherein the driving assembly (8) comprises a padding block (81), a second motor (82), a second gear (83), a third gear (84), a rivet (85) and a telescopic rod (86), wherein the padding block (81) is arranged on the inner wall of the housing (13) in a direction parallel to the length of the cross bar (71), and the padding block (81) is located outside the circuit board (2) and directly below the cross bar (71); The second motor (82) is fixedly arranged on the padding block (81); the controller controls the second motor (82) to start when the fan (3) blows toward the air inlet (132); the axis direction of the output shaft of the second motor (82) is parallel to the width direction of the circuit board (2); the second gear (83) is coaxially fixedly connected to the output shaft of the second motor (82); the third gear (84) is rotatably connected in a direction parallel to the rotation axis of the second gear (83) in the housing (13); the third gear (84) is located directly above the second gear (83) and is meshed with the second gear (83); the cross bar (71) and the second gear (83) are rotatably connected via a rivet (85); The raising block (81) is provided with a slide groove (811) along the length direction, and the telescopic rod (86) comprises a first rod (861) and a second rod (862) whose ends are slidably connected to each other, an end of the first rod (861) away from the second rod (862) is fixedly arranged on the cross bar (71), and an end of the second rod (862) away from the first rod (861) is slidably connected in the slide groove (811) along the length direction of the slide groove (811).

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