A quick replacement device for electric vehicle converter

Abstract

The present invention relates to the technical field of direct current converters, and in particular to a quick-change device for electric vehicle converters, including a converter body, to which two cables for input and output are connected, respectively, and both cables are connected to the converter body through a quick-release connection mechanism, and the quick-release connection mechanism includes a plug connected to one end of the cable and a plug shell arranged on the outside of the converter body. The present invention can first connect and install the plug and the plug shell by tightening the locking mechanism, and then merge the two conductive clips located on both sides of each conductive plug through a clip pressing mechanism, so that the two conductive clips are respectively pressed on both sides of the conductive plug, thereby quickly connecting the converter body and the cable, so that when the plug is plugged in, electric sparks will not splash outward, thereby protecting the circuit safety and the personal safety of the operator, and improving the safety of the converter body replacement operation.

Description

Technical Field

[0001] The invention relates to the technical field of direct current converters, and in particular to a quick replacement device for a converter of an electric vehicle. Background Art

[0002] The function of the electric vehicle converter is to convert the high voltage of the electric vehicle battery (such as 48V, 60V, 72V, etc.) into a lower stable voltage (usually 12V). The 12V voltage can be used for the electric vehicle's headlights, horns, dashboards and other electronic components. When replacing and installing the converter, the input and output lines of the converter need to be plugged in and out.

[0003] After searching, a Chinese patent with publication number: CN217641991U discloses a DC converter connector that is easy to connect, including a converter body, a connector is provided at the front end of the converter body, two side slots are opened at the front end of the converter body located above the connector, upper slides are fixedly installed at the front end of the converter body located on both sides of the two side slots, and a rubber plate is installed between the two upper slides.

[0004] Based on the above search and combined with actual problems, it was found that the adapter between the existing converter and the cable fixes the plug and the slot through a snap-on structure, and the internal conductive sheets also contact and slide against each other while the plug and the slot are combined and separated. In the process of combining and separating the plug and the slot, the two have not been completely merged, so there is still a large gap between the two. The friction between the conductive sheets can easily generate sparks, and the sparks can easily splash outward through the gap between the plug and the slot, thereby increasing the safety hazard. Summary of the invention

[0005] The object of the present invention is to provide a quick-changing device for an electric vehicle converter to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a quick-change device for an electric vehicle converter, comprising a converter body, to which two cables for input and output are connected respectively, and both of the cables are connected to the converter body through a quick-release connection mechanism, and the quick-release connection mechanism comprises a plug connected to one end of the cable and a plug shell arranged on the outside of the converter body, a plurality of conductive plugs are arranged on one side of the plug, a partition is fixed on the inner side of the plug shell, a plug tube is fixed on one side of the partition at a position corresponding to each conductive plug, and two conductive clips electrically connected to the converter body are symmetrically arranged on the inner side of each of the plug tubes; a rotating rod is rotatably connected through the center position of the partition, a tightening locking mechanism is arranged between one end of the rotating rod and the plug, and a clip pressing mechanism for driving each pair of conductive clips to merge is arranged between the other end of the rotating rod and the partition, and a driving mechanism for driving it to rotate is arranged at the other end of the rotating rod.

[0007] Preferably, the tightening and locking mechanism includes a first extension rod fixed on one side of the plug and a guide groove opened at one end of the outer side of the rotating rod, one end of the first extension rod is rotatably connected to a first roller that is rollingly adapted to the guide groove, and the guide groove includes an orientation groove, a tightening spiral groove, and an annular locking groove opened on the outer side of the rotating rod, and both ends of the tightening spiral groove are smoothly connected to one end of the orientation groove and the annular locking groove, respectively.

[0008] Preferably, the clip pressing mechanism includes a plurality of sliding rods slidably inserted inside the partition and extending to the inner side of each insertion tube, and a pushing ring fixed on the outer side of the rotating rod relative to one end of the guide groove, two pressure rods are fixed at one end of each of the sliding rods, and a connecting plate is fixed at the other end of each sliding rod, one end of the connecting plate is elastically connected to one side of the partition through a first spring, and a second extension rod is fixed at the position of the other side of the connecting plate corresponding to the first extension rod, one end of the second extension rod is rotatably connected to a second roller that rolls with one end of the pushing ring, the pushing ring includes a bottom surface, a spiral pushing surface, and a top surface, the two ends of the spiral pushing surface are smoothly connected to one end of the bottom surface and the top surface respectively, and the spiral pushing surface and the top surface are both aligned with the annular locking groove, and the directional groove and the tensioning spiral groove are both aligned with the bottom surface.

[0009] Preferably, the driving mechanism comprises two brackets fixed on the inner side of the plug housing and a worm wheel fixed on one end of the rotating rod, a worm screw meshing with the worm wheel is rotatably connected between the two brackets, and an anti-loosening adjustment mechanism is provided between the worm screw and the plug housing.

[0010] Preferably, the anti-loosening adjustment mechanism includes a square rod that passes through and is slidably connected to the inside of the worm gear, and a fixing ring fixed on the outside of the plug shell at a position corresponding to the square rod, one end of the square rod is fixed with a rotating cylinder that extends to the outside of the plug shell, the rotating cylinder is rotatably connected to the plug shell, and a knob is fixed to one end of the rotating cylinder, a plurality of directional sliding strips are arranged on the outside of the knob, and positioning grooves that are equal to and compatible with the number of directional sliding strips are opened on the inner side of the fixing ring.

[0011] Preferably, one end of the knob is rotatably connected to a foldable handle.

[0012] Preferably, a limiting plate is fixed to one end of the square rod relative to the rotating cylinder, and one end of the limiting plate is elastically connected to one end of the worm through a limiting spring.

[0013] Preferably, a circular hole is formed at one end of each of the conductive plugs, and a circular protrusion corresponding to the circular hole is formed at one side of each of the conductive clips.

[0014] Preferably, a sealing frame located outside the plurality of conductive plugs is fixed on one side of the plug, and a sealing ring is provided on the inner side of the plug shell at a position corresponding to the sealing frame.

[0015] Preferably, each of the conductive clips is an elastic copper sheet.

[0016] The present invention provides an electric vehicle converter quick replacement device through improvement, which has the following improvements and advantages compared with the prior art:

[0017] First, the present invention can first connect and install the plug and the shell by tightening the locking mechanism. During this process, no electrical connection is made between the converter body and the cable, and the conductive plug and the conductive clip are not in contact at this time. When the plug and the shell are completed and installed together, the two conductive clips on both sides of each conductive plug can be merged through the clip pressing mechanism, so that the two conductive clips are respectively pressed on both sides of the conductive plug, so that the converter body and the cable are quickly connected, so that when the plug is plugged in, sparks will not fly outward, thereby protecting the circuit safety and the personal safety of the operator, and improving the safety of the converter body during replacement operation. At the same time, when the plug and the shell are separated and disassembled, the conductive plug and the conductive clip can be separated first, and then the plug and the shell can be separated, thereby further avoiding sparks flying outward during disassembly.

[0018] Secondly, the present invention uses an anti-loosening adjustment mechanism to rotate the worm of the driving mechanism during disassembly and assembly, and can automatically lock after installation to prevent the worm from rotating. Therefore, when the electric vehicle is running, vibration that causes the plug and the plug shell to fall off, and the conductive plug and the conductive clip to fall off can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the plug when it is disassembled in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the plug in the present invention;

[0023] Figure 4 It is a schematic diagram of the first cross-sectional structure of the plug housing in the present invention;

[0024] Figure 5 It is a second cross-sectional structural schematic diagram of the plug housing in the present invention;

[0025] Figure 6 It is a third cross-sectional structural schematic diagram of the plug shell in the present invention;

[0026] Figure 7 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 8 It is a structural schematic diagram of one side of the rotating rod in the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the other side of the rotating rod in the present invention.

[0029] Reference numerals:

[0030] 1. Converter body; 2. Cable; 4. Plug; 5. Plug shell; 6. Conductive plug; 7. Insert tube; 9. Conductive clip; 10. Rotating rod; 11. Partition plate; 12. Sealing frame; 13. Sealing ring; 101. Guide groove; 102. First extension rod; 103. First roller; 1011. Orientation groove; 1012. Tension spiral groove; 1013. Annular locking groove; 201. Sliding rod; 202. Press rod; 204. Connecting plate; 205. First spring; 206 , second extension rod; 207, second roller; 208, propulsion ring; 2081, bottom surface; 2082, spiral propulsion surface; 2083, top surface; 209, round protrusion; 210, round hole; 301, worm; 302, worm wheel; 303, bracket; 304, square rod; 305, rotating cylinder; 306, fixing ring; 307, positioning groove; 308, knob; 309, directional slide; 310, folding handle; 311, limit spring; 312, limit plate. DETAILED DESCRIPTION

[0031] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides an electric vehicle converter quick replacement device through improvement. The technical solution of the present invention is:

[0033] like Figures 1 to 9As shown, an embodiment of the present invention provides a quick replacement device for an electric vehicle converter, including a converter body 1, to which two cables 2 for input and output are connected, respectively, and the two cables 2 are connected to the converter body 1 through a quick-release connection mechanism, and the quick-release connection mechanism includes a plug 4 connected to one end of the cable 2 and a plug shell 5 arranged on the outside of the converter body 1, one side of the plug 4 is provided with a plurality of conductive plugs 6, and a partition 11 is fixed on the inner side of the plug shell 5, and a plug tube 7 is fixed on one side of the partition 11 at a position corresponding to each conductive plug 6, and the inner side of each plug tube 7 is symmetrically provided with two conductive plugs electrically connected to the converter body 1. The conductive clip 9 connected thereto; a rotating rod 10 is rotatably connected thereto through the center position of the partition 11, a tightening and locking mechanism is arranged between one end of the rotating rod 10 and the plug 4, and a clip pressing mechanism for driving each pair of conductive clips 9 to be merged is arranged between the other end of the rotating rod 10 and the partition 11, a driving mechanism for driving the rotating rod 10 to rotate is arranged at the other end of the rotating rod 10, and the driving mechanism comprises two brackets 303 fixed on the inner side of the plug shell 5 and a worm gear 302 fixed at one end of the rotating rod 10, a worm 301 meshing with the worm gear 302 is rotatably connected between the two brackets 303, and an anti-loosening adjustment mechanism is arranged between the worm gear 301 and the plug shell 5.

[0034] Further, the tightening and locking mechanism includes a first extension rod 102 fixed to one side of the plug 4 and a guide groove 101 provided at one end of the outer side of the rotating rod 10, one end of the first extension rod 102 is rotatably connected to a first roller 103 that is rollingly adapted to the guide groove 101, the guide groove 101 includes an orientation groove 1011, a tightening spiral groove 1012, and an annular locking groove 1013 provided at the outer side of the rotating rod 10, and both ends of the tightening spiral groove 1012 are smoothly connected to one end of the orientation groove 1011 and the annular locking groove 1013 respectively;

[0035] By tightening the locking mechanism, the plug 4 and the plug shell 5 can be smoothly combined and separated, and there is no need to use strong pulling force during disassembly and assembly, which reduces the difficulty of disassembly and assembly and improves the convenience of replacing the converter body 1. In addition, the first roller 103 can be locked through the annular locking groove 1013 therein to prevent it from loosening, thereby avoiding the plug 4 and the plug shell 5 from loosening and falling off, thereby improving the connection reliability.

[0036] Furthermore, the clip pressing mechanism includes a plurality of slide bars 201 slidably inserted in the interior of the partition 11 and extending to the inner side of each insert tube 7, a push ring 208 fixed to the outer side of the rotating rod 10 relative to one end of the guide groove 101, one end of each slide bar 201 is fixed with two pressing bars 202, and the other end of each slide bar 201 is fixed with a connecting plate 204, one end of the connecting plate 204 is elastically connected to one side of the partition 11 through a first spring 205, and the other side of the connecting plate 204 is fixed at the position corresponding to the first extension bar 102. A second extension rod 206 is fixed, one end of the second extension rod 206 is rotatably connected to a second roller 207 that rolls with one end of a propulsion ring 208, the propulsion ring 208 includes a bottom surface 2081, a spiral propulsion surface 2082, and a top surface 2083, both ends of the spiral propulsion surface 2082 are smoothly connected to one end of the bottom surface 2081 and the top surface 2083, and the spiral propulsion surface 2082 and the top surface 2083 are aligned with the annular locking groove 1013, and the orientation groove 1011 and the tensioning spiral groove 1012 are aligned with the bottom surface 2081;

[0037] Through the clip pressing mechanism, after the plug 4 and the plug shell 5 are fully combined, the conductive plug 6 and the conductive clip 9 are combined and connected. When disassembling, the conductive plug 6 and the conductive clip 9 can be separated before the plug 4 and the plug shell 5 begin to separate. Therefore, the generation of electric sparks during the plugging and unplugging process of the plug 4 and the plug shell 5 can be effectively avoided, so there will be no electric sparks flying outward, which improves safety.

[0038] Furthermore, the anti-loosening adjustment mechanism includes a square rod 304 that penetrates and slides inside the worm 301, and a fixing ring 306 that is fixed on the outer side of the plug shell 5 at a position corresponding to the square rod 304. A rotating cylinder 305 that extends to the outer side of the plug shell 5 is fixed at one end of the square rod 304. The rotating cylinder 305 is rotatably connected to the plug shell 5, and a knob 308 is fixed at one end of the rotating cylinder 305. A plurality of directional slides 309 are arranged on the outer side of the knob 308. A folding handle 310 is rotatably connected to one end of the knob 308. Positioning grooves 307 that are equal in number and matched with the directional slides 309 are opened on the inner side of the fixing ring 306.

[0039] Through the anti-loosening adjustment mechanism, the worm 301 of the driving mechanism can be rotated during disassembly and assembly, and can be automatically locked after installation, thereby preventing the worm 301 from rotating. Therefore, when the electric vehicle is driving, vibration can be prevented from causing the plug 4 and the plug shell 5 to fall off, and the conductive plug 6 and the conductive clip 9 to fall off.

[0040] Furthermore, a limiting plate 312 is fixed to one end of the square rod 304 relative to the rotating cylinder 305, and one end of the limiting plate 312 is elastically connected to one end of the worm 301 through a limiting spring 311;

[0041] When the disassembly and assembly are completed, the knob 308 is released, and the limit spring 311 applies a thrust to the limit plate 312. The limit plate 312 is driven by the thrust to drive the square rod 304 to slide on the inner side of the worm 301. The square rod 304 drives the knob 308 to move toward the inside of the fixing ring 306 through the rotating cylinder 305, so that the multiple directional slides 309 on the outside of the knob 308 slide into the inside of each positioning groove 307, thereby limiting the knob 308 and preventing the knob 308 from rotating when the electric vehicle is driving.

[0042] Furthermore, a circular hole 210 is formed at one end of each conductive plug 6, and a circular protrusion 209 corresponding to the circular hole 210 is formed at one side of each conductive clip 9;

[0043] When the conductive clip 9 is pressed against one side of the conductive plug 6, the round protrusion 209 on one side of the conductive clip 9 can extend into the inner side of the round hole 210 on the conductive plug 6, which can improve the firmness of the connection between the conductive plug 6 and the conductive clip 9, prevent relative sliding between the two, and improve the connection stability of the circuit.

[0044] Furthermore, a sealing frame 12 located outside the plurality of conductive plugs 6 is fixed on one side of the plug 4, and a sealing ring 13 is provided on the inner side of the plug shell 5 at a position corresponding to the sealing frame 12;

[0045] The sealing ring 13 seals the gap between the sealing frame 12 and the plug housing 5 to prevent water and dust, and prevent electric sparks from flying outward.

[0046] Furthermore, each conductive clip 9 is an elastic copper sheet;

[0047] After the pressure rod 202 leaves one side of the conductive clip 9 , the conductive clip 9 can be reset under the action of its own elastic force, thereby automatically separating from the conductive plug 6 to disconnect the circuit, thereby facilitating the disassembly of the plug 4 .

[0048] Working principle: When installing the cable 2 and the converter body 1, the plug 4 at one end of the cable 2 is inserted into the inner side of the plug shell 5 located outside the converter body 1, and the sealing frame 12 on one side of the plug 4 extends into the inner side of the plug shell 5. At the same time, multiple conductive plugs 6 on one side of the plug 4 are respectively inserted into the inner side of each plug tube 7, and each conductive plug 6 extends between the two conductive clips 9 at the corresponding position. At this time, the conductive plug 6 does not contact the two conductive clips 9 on both sides of it. At the same time, the first extension rod 102 of the tightening locking mechanism on one side of the plug 4 drives the first roller 10 3 moves to the inner side of the orientation groove 1011. As the plug 4 is inserted into the inner side of the plug shell 5, the first roller 103 moves along the orientation groove 1011 to one end of the tightening spiral groove 1012, that is, the connection between the tightening spiral groove 1012 and the orientation groove 1011 (at this time, the second roller 207 is located in contact with the bottom surface 2081). At this time, the outer side of the sealing frame 12 on one side of the plug 4 is in contact with the sealing ring 13, and the sealing ring 13 seals the gap between the sealing frame 12 and the plug shell 5, plays a waterproof and dustproof role, and can prevent electric sparks from splashing outwards;

[0049] Then, the knob 308 of the anti-loosening adjustment mechanism is rotated, and the knob 308 drives the square rod 304 to rotate through the rotating cylinder 305, and the square rod 304 drives the worm 301 to rotate, and the worm 301 drives the worm wheel 302 to rotate, thereby driving the rotating rod 10 to rotate, and the rotating rod 10 drives the guide groove 101 to rotate, thereby driving the directional groove 1011, the tightening spiral groove 1012, and the annular locking groove 1013 to rotate. When the tightening spiral groove 1012 rotates, the first roller 103 can move toward one end of the annular locking groove 1013 through the rolling cooperation with the first roller 103, so that the first roller 103 slides from the tightening spiral groove 1012 to the inner side of the annular locking groove 1013 (when the first roller 103 is located inside the tightening spiral groove 1012, the second roller 20 7 is still in contact with the bottom surface 2081, when the first roller 103 slides into the inner side of the annular locking groove 1013, the second roller 207 can contact the spiral propulsion surface 2082), so that the first roller 103 applies a force pointing to the inner side of the plug shell 5 to the first extension rod 102 and the plug 4, so that the plug 4 is completely pulled into the innermost end of the plug shell 5, thereby completing the combined installation between the plug 4 and the plug shell 5. When the first roller 103 slides from the tightening spiral groove 1012 into the inner side of the annular locking groove 1013, the annular locking groove 1013 can lock the first roller 103, thereby preventing the first roller 103 from moving in the opposite direction, thereby preventing the first extension rod 102 and the plug 4 from moving in the opposite direction, thereby preventing the plug 4 and the plug shell 5 from falling off, and improving the connection reliability;

[0050] When the plug 4 and the plug shell 5 are connected, the knob 308 is continuously rotated to make the rotating rod 10 continuously rotate, and the rotating rod 10 drives the propulsion ring 208 of the clip pressing mechanism to rotate synchronously. Since the spiral propulsion surface 2082 is aligned with the annular locking groove 1013, when the first roller 103 slides into the inner side of the annular locking groove 1013, the spiral propulsion surface 2082 contacts the second roller 207. At this time, the spiral propulsion surface 2082 can apply a thrust to the second roller 207 pointing to the side where the plug 4 is located. The second roller 207 slides along the surface of the spiral propulsion surface 2082 to the surface of the top surface 2083. After the second roller 207 is thrusted, it drives the connecting plate 204 to move through the second extension rod 206. The movement of the connecting plate 204 compresses the first spring 205 and pushes multiple sliding rods 201 to slide inside the partition 11 at the same time. Each slide bar 201 is synchronously extended into the inner side of the plug tube 7 at each corresponding position, and each slide bar 201 drives the two pressure bars 202 at the end to move respectively. The two pressure bars 202 located on both sides of each conductive plug 6 respectively squeeze the two conductive clips 9 on both sides, so that the two conductive clips 9 separated from each other are merged, so that the two conductive clips 9 on both sides are respectively pressed and fitted on both sides of the conductive plug 6, so that the conductive plug 6 and the conductive clip 9 are connected, and at the same time, the cable 2 is electrically connected to the converter body 1 through the conductive plug 6 and the conductive clip 9. Since the conductive plug 6 and the conductive clip 9 are brought into contact and conduction only after the plug 4 and the plug shell 5 are completely merged, it can effectively prevent electric sparks from friction when the plug 4 and the plug shell 5 are plugged in, thereby protecting the circuit safety and the personal safety of the operator, and improving the safety of the converter body 1 during replacement operation;

[0051] When the cable 2 needs to be separated from the converter body 1, according to the above principle, the knob 308 of the anti-loosening adjustment mechanism is rotated in the opposite direction, driving the rotating rod 10 to rotate in the opposite direction, and the rotating rod 10 drives the propulsion ring 208 to reverse, and at the same time, the first spring 205 releases the elastic force. Under the elastic force of the first spring 205, when the second roller 207 rolls in the opposite direction from the top surface 2083 to contact the spiral propulsion surface 2082, the second roller 207 is pushed by the first spring 205 and slides to the bottom surface 2081 through the spiral propulsion surface 2082, thereby driving the connecting plate 20 4 and each slide bar 201 move in the opposite direction, and each slide bar 201 drives the two pressure bars 202 at the end to move in the opposite direction, so that each pressure bar 202 is separated from one side of the conductive clip 9 at the corresponding position, and each conductive clip 9 restores its original shape under the action of its own elastic force and separates from one side of the conductive plug 6 again, thereby disconnecting the connection between the conductive plug 6 and the conductive clip 9, thereby disconnecting the circuit between the cable 2 and the converter body 1. After the circuit is disconnected, when the plug 4 and the plug shell 5 are separated, no electric sparks will be generated, thereby further improving the safety of the operation;

[0052] After the conductive clip 9 is disconnected from the conductive plug 6, the knob 308 is continuously rotated in the reverse direction, thereby driving the rotating rod 10 to continue to rotate in the reverse direction. At this time, the first roller 103 can slide from the inner side of the annular locking groove 1013 into the tightening spiral groove 1012. Under the guidance of the tightening spiral groove 1012, a reverse thrust is applied to the first roller 103, thereby pushing the plug 4 to slide out from the inner side of the plug shell 5 through the first roller 103 and the first extension rod 102, so that the plug 4 and the plug shell 5 can be separated conveniently and quickly. Compared with the existing method of plugging by snapping, there is no need to apply a large pulling force to pull out the plug 4, so it is not easy to cause the wire therein to be torn off due to excessive force, thereby reducing the difficulty of replacing the converter body 1;

[0053] When the disassembly and assembly are completed, the knob 308 is released, and the limit spring 311 applies a thrust to the limit plate 312. The limit plate 312 is driven by the thrust to drive the square rod 304 to slide on the inner side of the worm 301. The square rod 304 drives the knob 308 to move to the inside of the fixing ring 306 through the rotating cylinder 305, so that the multiple directional slide bars 309 on the outside of the knob 308 slide into the inside of each positioning groove 307, so that the knob 308 can be limited. Therefore, when the electric vehicle is driving, the vibration of the vehicle can be prevented from causing the knob 308 to rotate, thereby ensuring the stability of the fixation between the plug 4 and the plug shell 5, and also ensuring the connection stability between the conductive plug 6 and the conductive clip 9.

[0054] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-change device for an electric vehicle converter, comprising a converter body (1), to which two cables (2) for input and output are connected, respectively, and characterized in that: The two cables (2) are connected to the converter body (1) via a quick-release connection mechanism, the quick-release connection mechanism comprising a plug (4) connected to one end of the cable (2) and a plug shell (5) arranged outside the converter body (1), a plurality of conductive plugs (6) being arranged on one side of the plug (4), a partition (11) being fixed on the inner side of the plug shell (5), a plug tube (7) being fixed on one side of the partition (11) at a position corresponding to each conductive plug tube (6), and two conductive clips (9) being electrically connected to the converter body (1) being symmetrically arranged on the inner side of each plug tube (7); A rotating rod (10) is rotatably connected to the center of the partition (11), a tightening and locking mechanism is provided between one end of the rotating rod (10) and the plug (4), and a clip pressing mechanism for driving each pair of conductive clips (9) to merge is provided between the other end of the rotating rod (10) and the partition (11), and a driving mechanism for driving the rotating rod (10) to rotate is provided at the other end; The tightening and locking mechanism comprises a first extension rod (102) fixed to one side of the plug (4) and a guide groove (101) provided at one end of the outer side of the rotating rod (10); one end of the first extension rod (102) is rotatably connected to a first roller (103) that is rollingly adapted to the guide groove (101); the guide groove (101) comprises an orientation groove (1011), a tightening spiral groove (1012), and an annular locking groove (1013) provided at the outer side of the rotating rod (10); and two ends of the tightening spiral groove (1012) are smoothly connected to one end of the orientation groove (1011) and one end of the annular locking groove (1013); The clip pressing mechanism comprises a plurality of slide bars (201) which are slidably inserted in the interior of the partition (11) and extend to the inside of each insertion tube (7), and a push ring (208) which is fixed to the outside of the rotating rod (10) and is opposite to one end of the guide groove (101). Two pressure bars (202) are fixed to one end of each of the slide bars (201), and a connecting plate (204) is fixed to the other end of each of the slide bars (201). One end of the connecting plate (204) is elastically connected to one side of the partition (11) via a first spring (205), and a second extension bar (202) is fixed to the other side of the connecting plate (204) at a position corresponding to the first extension bar (102). An extension rod (206), one end of the second extension rod (206) being rotatably connected to a second roller (207) that rolls with one end of a propulsion ring (208), the propulsion ring (208) comprising a bottom surface (2081), a spiral propulsion surface (2082), and a top surface (2083), the two ends of the spiral propulsion surface (2082) being smoothly connected to one end of the bottom surface (2081) and the top surface (2083), respectively, and the spiral propulsion surface (2082) and the top surface (2083) are both aligned with the annular locking groove (1013), and the orientation groove (1011) and the tensioning spiral groove (1012) are both aligned with the bottom surface (2081).

2. The electric vehicle converter quick replacement device according to claim 1, characterized in that: The driving mechanism comprises two brackets (303) fixed to the inner side of the plug housing (5) and a worm wheel (302) fixed to one end of the rotating rod (10); a worm (301) meshing with the worm wheel (302) is rotatably connected between the two brackets (303); and an anti-loosening adjustment mechanism is provided between the worm (301) and the plug housing (5).

3. The electric vehicle converter quick replacement device according to claim 2, characterized in that: The anti-loosening adjustment mechanism comprises a square rod (304) penetrating and slidably connected inside the worm (301), and a fixing ring (306) fixed at a position on the outside of the plug shell (5) corresponding to the square rod (304); a rotating cylinder (305) extending to the outside of the plug shell (5) is fixed at one end of the square rod (304); the rotating cylinder (305) is rotatably connected to the plug shell (5); a knob (308) is fixed at one end of the rotating cylinder (305); a plurality of directional slide bars (309) are arranged on the outside of the knob (308); and positioning grooves (307) equal in number to and matching the directional slide bars (309) are opened on the inside of the fixing ring (306).

4. The electric vehicle converter quick replacement device according to claim 3, characterized in that: One end of the knob (308) is rotatably connected to a foldable handle (310).

5. The electric vehicle converter quick replacement device according to claim 3, characterized in that: A limiting plate (312) is fixed to one end of the square rod (304) relative to the rotating cylinder (305), and one end of the limiting plate (312) is elastically connected to one end of the worm (301) via a limiting spring (311).

6. The electric vehicle converter quick replacement device according to claim 1, characterized in that: A circular hole (210) is provided at one end of each conductive plug (6), and a circular protrusion (209) corresponding to the circular hole (210) is provided on one side of each conductive clip (9).

7. The electric vehicle converter quick replacement device according to claim 1, characterized in that: A sealing frame (12) located outside the plurality of conductive plugs (6) is fixed on one side of the plug (4), and a sealing ring (13) is provided on the inner side of the plug housing (5) at a position corresponding to the sealing frame (12).

8. The electric vehicle converter quick replacement device according to claim 1, characterized in that: Each of the conductive clips (9) is an elastic copper sheet.

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