Heat dissipation mechanism for MOS (Metal Oxide Semiconductor) tube of electric vehicle controller

Abstract

The invention belongs to the technical field of electric vehicle controllers, and particularly relates to an electric vehicle controller MOS tube heat dissipation mechanism which comprises a base and a top seat, a plurality of MOS tubes are placed between the base and the top seat, each MOS tube is provided with a base body, a pin and a fixing piece, heat dissipation sets are arranged at the positions, facing the pins, of the base and the top seat, and the heat dissipation sets are arranged on the base and the top seat. The heat dissipation group is provided with a plurality of heat dissipation boxes which are in fit contact with the surfaces of the pins, the extension direction of the heat dissipation boxes is perpendicular to the extension direction of the pins, patches are fixed to the positions, corresponding to the directions of the pins, of the heat dissipation boxes, and a plurality of through grooves are formed in the positions, located between every two adjacent patches, of the tops of the heat dissipation boxes. Through the heat dissipation box perpendicular to the pins and the pins, stretching across the multiple MOS tubes, of the heat dissipation box, hot air can be dispersed in the extending direction of the heat dissipation box, and through the through grooves communicated with one another in the tops of the multiple heat dissipation boxes, the hot air can flow in the extending direction of the through grooves in a dispersed mode.

Description

Technical Field

[0001] The invention relates to the technical field of electric vehicle controllers, and in particular to a heat dissipation mechanism for MOS tubes of an electric vehicle controller. Background Art

[0002] MOS tube is a metal-oxide-semiconductor field-effect transistor, or metal-insulator-semiconductor. In electric vehicle controllers, MOS tubes need to dissipate heat.

[0003] Referring to the Chinese patent with patent announcement number CN213401172U, a water pump controller MOS tube heat dissipation mechanism is disclosed, including a substrate, a pad is welded on the top of the substrate, a lower shell is installed on the top of the pad, a MOS tube is installed in the lower shell, the top of the lower shell is connected to an upper shell, the MOS tube is arranged between the upper shell and the lower shell, the top of the upper shell is connected to a heat dissipation fin, one side of the MOS tube is connected to a heat absorption device, and one end of the heat absorption device is connected between the upper shell and the lower shell.

[0004] However, in the above-mentioned public means and conventional means in the prior art, heat exchange is often performed only through the patch, but the heat generated at the MOS pin position is easily accumulated and difficult to dissipate quickly, which will affect the use effect of the MOS tube. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a heat dissipation mechanism for an MOS tube of an electric vehicle controller.

[0006] A heat dissipation mechanism for an electric vehicle controller MOS tube proposed by the present invention comprises a base and a top seat, a plurality of MOS tubes are placed between the base and the top seat, the MOS tubes are provided with a matrix, a pin and a fixing sheet, the base and the top seat are provided with a heat dissipation group at positions facing the pins, the heat dissipation group is provided with a plurality of heat dissipation boxes which are in contact with the surface of the pins, the extension direction of the heat dissipation boxes is arranged perpendicular to the extension direction of the pins, a cold water trough is arranged in the heat dissipation box, both ends of the bottom of the cold water trough are connected with cold water pipes, patches are fixed at positions corresponding to the pin direction of the heat dissipation box, a plurality of through grooves are provided at the top of the heat dissipation box between two adjacent patches, openings are arranged on both sides of the through grooves, and the positions of the through grooves between two adjacent heat dissipation boxes correspond.

[0007] Preferably, the fixing plate is fixed to a side position of the bottom of the base away from the pin, a through hole is preset on the fixing plate, a limiting block is fixed at a position corresponding to the through hole at the top of the base, a limiting cylinder is fixed at a position corresponding to the limit block at the bottom of the top seat, and limit strips extending vertically upward are installed at both ends of the top of the base, and a card slot is opened at a position corresponding to the limit strip at the bottom of the top seat.

[0008] Preferably, a cavity is provided in the base and the top seat, a movable groove is provided at a position of the cavity corresponding to the heat dissipation group, and telescopic parts are connected between the two ends of the bottom of the heat dissipation box and the inner wall of the cavity.

[0009] Preferably, an electric guide rail is installed at a position of the cavity away from the heat dissipation box, one end of the electric guide rail is inclined toward the direction close to the base, a moving block is connected to the electric guide rail, an electromagnetic block is installed on the top of the moving block, and the moving blocks in the base and the top seat move in opposite directions.

[0010] Preferably, a magnetic block is installed at the bottom of the heat dissipation box, and a plurality of magnetic blocks in the heat dissipation group are equidistantly distributed along the extension direction of the electric guide rail.

[0011] Preferably, two adjacent heat dissipation boxes in the heat dissipation group are in sliding contact with each other, a plurality of notches 1 are provided at a position away from the pins on one side of the heat dissipation box, a plurality of notches 2 are provided at a position close to the pins on the other side of the heat dissipation box, and the positions of the notches 2 and 1 are adapted to each other.

[0012] Preferably, the base and the top seat are provided with a plurality of air holes at positions facing the base body, and the side of the moving block facing the base body is provided with a horizontally placed extension bar, and the extension bar is arranged perpendicularly to the electric guide rail.

[0013] Preferably, a plurality of slide rails are installed at a position of the cavity away from the MOS tube, and the plurality of slide rails are distributed in the extension direction of the electric guide rail. The slide rails are arranged into a V-shaped structure with the middle position bent toward the direction close to the electric guide rail, and a slide groove is arranged in the slide rail.

[0014] Preferably, a slider is connected to the slide groove for limited sliding, a rotating hole is opened on the top of the slider, and a vertically extending shaft rod is rotatably connected to the inner wall of the rotating hole, and a plurality of blades are fixed to the top of the outer wall of the shaft rod. A spring 1 is fixed at both ends of the slide groove, and a stop block is installed at the end of the spring 1. The stop block slides in the slide groove for limited sliding, and the circumferential outer wall of the shaft rod is located between the slider and the blade and contacts the outer wall of the extension strip.

[0015] Preferably, a fixing groove is formed at the end of the extension bar away from the moving block, a friction pad is fixed to the inner wall of the fixing groove, and both side surfaces of the friction pad are flush with the surface of the extension bar.

[0016] The beneficial effects of the present invention are: 1. In the present invention, a heat sink is arranged perpendicular to the pins and the heat sink spans across the pins of multiple MOS tubes, so that the hot air around the pins is dispersed along the extension direction of the heat sink, and at the same time, through grooves interconnected at the tops of multiple heat sinks are used to disperse the hot air around the pins in the extension direction of the through grooves, so that even if the hot air is difficult to quickly exchange heat and cool down from the patch position, it can be dispersed, thereby effectively dispersing the hot air and avoiding the heat of the three MOS tubes from accumulating at the pin position and being difficult to quickly cool down.

[0017] 2. In the present invention, the electric guide rail drives the electromagnetic block to reciprocate, so that each heat dissipation box is alternately raised and lowered, so that gaps are generated between the fitting positions of the pins and the heat dissipation box at different positions, thereby further improving the dispersion effect of the gas flow around the pins, further avoiding the accumulation of hot air and improving the efficiency of heat dissipation and cooling.

[0018] 3. In the present invention, during the reciprocating movement of the electric guide rail with the extension strip, the slider, the shaft rod and the blade move back and forth along the slide groove to guide the airflow at the wind hole position to improve the heat dissipation and cooling effect around the substrate, and the airflow movement at the wind hole position is coordinated with the reciprocating lifting and lowering of the heat dissipation box to guide the airflow, thereby further improving the airflow dispersion and cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a heat dissipation mechanism for an electric vehicle controller MOS tube proposed by the present invention; Figure 2 This is a schematic diagram of the base and top structure of a heat dissipation mechanism for an electric vehicle controller MOS tube proposed by the present invention; Figure 3 A schematic diagram of the base structure of a heat dissipation mechanism of a MOS tube of an electric vehicle controller proposed by the present invention; Figure 4 This is a schematic diagram of the top seat structure of a heat dissipation mechanism of a MOS tube of an electric vehicle controller proposed by the present invention; Figure 5 This is a schematic diagram of the heat dissipation box structure of a heat dissipation mechanism of a MOS tube of an electric vehicle controller proposed by the present invention; Figure 6 This is a schematic diagram of the distribution structure of the notch 1 and notch 2 of the heat dissipation mechanism of the MOS tube of an electric vehicle controller proposed by the present invention; Figure 7 This is a schematic diagram of the magnetic block distribution structure of a heat dissipation mechanism of an electric vehicle controller MOS tube proposed by the present invention; Figure 8 A schematic diagram of the internal structure of a cavity of a heat dissipation mechanism of a MOS tube of an electric vehicle controller proposed by the present invention; Fig. 9 This is a schematic diagram of the distribution structure of the electric guide rail and the slide rail of the heat dissipation mechanism of the MOS tube of an electric vehicle controller proposed by the present invention; Fig.10 A heat dissipation mechanism for a MOS tube of an electric vehicle controller proposed by the present invention Fig. 9 Schematic diagram of the structure of part A; Fig.11 A schematic diagram of a slide rail structure of a heat dissipation mechanism for an electric vehicle controller MOS tube proposed by the present invention; Fig.12This is a schematic diagram of the internal structure of a slide slot of a heat dissipation mechanism for an electric vehicle controller MOS tube proposed by the present invention.

[0020] In the figure: 1 base, 2 top seat, 201 card slot, 3 MOS tube, 301 matrix, 302 pin, 303 fixed plate, 4 heat dissipation group, 5 heat dissipation box, 501 cold water tank, 502 notch 1, 503 notch 2, 504 through slot, 6 cold water pipe, 7 patch, 8 limit block, 9 limit cylinder, 10 limit strip, 11 cavity, 111 air hole, 112 installation slot, 12 telescopic part, 13 vertical pole, 14 magnetic block, 15 electric guide rail, 16 moving block, 17 electromagnetic block, 18 extension strip, 181 friction pad, 19 slide rail, 191 slide slot, 20 slider, 21 shaft rod, 22 blade, 23 spring, 24 stop block. DETAILED DESCRIPTION

[0021] Example 1: Reference Figure 1-Figure 6A heat dissipation mechanism for MOS tube of electric vehicle controller includes a base 1 and a top base 2, a plurality of MOS tubes 3 are placed between the base 1 and the top base 2, the MOS tube 3 is provided with a base 301, pins 302 and a fixing plate 303, a plurality of horizontally extending pins 302 are provided on one side of the base 301, a heat dissipation group 4 is provided at positions of the base 1 and the top base 2 facing the pins 302, the heat dissipation group 4 is provided with a plurality of heat dissipation boxes 5 which are in contact with the surface of the pins 302, and the heat dissipation boxes 5 extend in the horizontal direction between the two ends of the base 1. The heat sink 5 is extended, the extension direction of the heat sink 5 is perpendicular to the extension direction of the pin 302, a cold water tank 501 is arranged in the heat sink 5, and both ends of the bottom of the cold water tank 501 are connected with cold water pipes 6, the heat sink 5 is provided with a through groove at a position corresponding to the direction of the pin 302, a patch 7 is fixed on the inner wall of the through groove, and the outer wall of the patch 7 is in contact with the surface of the pin 302, and a plurality of through grooves 504 are provided at the top of the heat sink 5 between two adjacent patches 7, and the two sides of the through groove 504 are opened, and the two adjacent heat sinks 5 The positions of the through grooves 504 between the base 1 and the top 2 correspond to each other. During use, multiple MOS tubes 3 to be connected are installed at equal distances between the base 1 and the top 2, and multiple heat dissipation boxes 5 on the base 1 and the top 2 are in contact with the surfaces of the pins 302 in the MOS tubes 3, and one heat dissipation box 5 is in contact with the pins 302 of multiple MOS tubes 3 at the same time, so that the pins 302 are cooled by the cold water flowing in the heat dissipation box 5; the heat dissipation box 5 is arranged vertically to the pins 302 and the heat dissipation box 5 spans the pins 302 of multiple MOS tubes 3, so that the hot air around the pins 302 is dispersed along the extension direction of the heat dissipation box 5, and at the same time, the through grooves 504 connected to each other at the tops of the multiple heat dissipation boxes 5 are used to disperse the hot air around the pins 302 in the extension direction of the through grooves 504, that is, in the direction perpendicular to the heat dissipation box 5, so that even if the hot air is difficult to quickly exchange heat and cool down from the position of the patch 7, it can be dispersed, thereby effectively dispersing the hot air and avoiding the heat of the three MOS tubes 3 from accumulating at the position of the pins 302 and being difficult to cool down quickly.

[0022] In the present invention, reference is made to Figure 1-Figure 6The fixing piece 303 is fixed to the bottom of the base 301 at a side away from the pin 302. A through hole is preset on the fixing piece 303. A limiting block 8 is fixed at the top of the base 1 at a position corresponding to the through hole. The outer wall of the limiting block 8 contacts the inner wall of the through hole and the limiting block 8 extends upward from the through hole. A limiting cylinder 9 is fixed at the bottom of the top seat 2 at a position corresponding to the limiting block 8. The inner wall of the limiting cylinder 9 contacts the outer wall of the limiting block 8 and the bottom end of the limiting cylinder 9 contacts the top of the fixing piece 303. The top of the base 1 is located at the base 301. The two ends of the base 301 are provided with limit bars 10 extending vertically upward, the top of the limit bar 10 is located above the top outer wall of the base 301, and a slot 201 is provided at the bottom of the top seat 2 corresponding to the limit bar 10, and the top of the limit bar 10 is engaged with the slot 201. During installation and use, the MOS tube 3 is placed at the position corresponding to the two limit bars 10, and the perforation on the fixing sheet 303 is set in the corresponding limit block 8, so as to facilitate the completion of the limit of the MOS tube 3. The top seat 2 is then installed, the slot 201 on the top seat 2 corresponds to the limit strip 10, and the limit tube 9 corresponds to the limit block 8 position, so as to realize the installation of the top seat 2. At this time, the bottom end of the limit tube 9 contacts the top outer wall of the fixed sheet 303, the bottom of the heat dissipation box 5 on the top seat 2 contacts the top outer wall of the pin 302, and a gap is left between the bottom outer wall of the top seat 2 and the top outer wall of the base 301 because of the limit strip 10; thereby, while facilitating the limited installation of the MOS tube 3, the upper and lower positions of the pin 302 are cooled by contacting the surface of the heat dissipation box 5, and a gap can be left between the top and bottom outer walls of the base 301 to ensure air flow, and the temperature difference between the heat dissipation box 5 and other positions is generated by the water flowing in the heat dissipation box 5 to guide the air flow to improve the cooling effect on the position of the base 301.

[0023] In the present invention, reference is made to Figure 1-Figure 6 A cavity 11 is provided in both the base 1 and the top seat 2, and a movable groove is provided in the position corresponding to the cavity 11 and the heat dissipation group 4. A telescopic member 12 is connected between the two ends of the bottom of the heat dissipation box 5 and the inner wall of the cavity 11, and an installation groove 112 is provided in the position corresponding to the inner wall of the cavity 11 and the telescopic member 12. The cold water pipe 6 is configured as a hose structure, and the telescopic member 12 is provided with a rod body and a cylinder body that are slidably connected. A spring 2 is connected between the rod body and the inner wall of the cylinder to support the heat dissipation box 5 by using the telescopic member 12 and enable the heat dissipation box 5 to move in the vertical direction.

[0024] In the present invention, reference is made to Figure 1-Figure 10An embedding groove is provided at a position of the cavity 11 away from the heat dissipation box 5, and an electric guide rail 15 is installed in the embedding groove. The electric guide rail 15 is tilted on the horizontal plane, and one end of the electric guide rail 15 is tilted toward the direction close to the base 301. A moving block 16 is connected to the electric guide rail 15, and an electromagnetic block 17 is installed on the top of the moving block 16. The electric guide rail 15 reciprocates with the moving block 16 and the electromagnetic block 17 in the horizontal direction, and the moving blocks 16 in the base 1 and the top seat 2 move in opposite directions. A vertical rod 13 is installed at the bottom of the heat dissipation box 5, and a magnetic block 14 is installed at the bottom of the vertical rod 13. The multiple magnetic blocks 14 in the heat dissipation group 4 are equidistantly distributed along the extension direction of the electric guide rail 15, that is, the multiple magnetic blocks 14 in the same heat dissipation group 4 are tilted, and the tilted distribution direction of the multiple magnetic blocks 14 is parallel to the tilted direction of the electric guide rail 15; the electric guide rail 15 carries the electromagnetic block 1 During the reciprocating movement in the horizontal direction, when the electromagnetic block 17 approaches the corresponding magnetic block 14, the magnetic attraction force causes the magnetic block 14 and the corresponding heat sink 5 to move into the cavity 11, thereby opening a gap between the heat sink 5 and the pin 302. When the electromagnetic block 17 moves away from the corresponding magnetic block 14, the spring 2 in the telescopic member 12 is used to reset the heat sink 5 to contact the surface of the pin 302, thereby causing the electromagnetic block 17 to reciprocate through the electric guide rail 15, and causing each heat sink 5 to alternately rise and fall, so that the pin 302 and the heat sink 5 are spaced at different positions at the fitting position, thereby further improving the dispersion effect of the gas flow around the pin 302, so as to further avoid the accumulation of hot air and improve the heat dissipation and cooling efficiency; and through the inclined setting of the electric guide rail 15 and the distributed setting of the magnetic block 14, the distance between adjacent magnetic blocks 14 is enlarged.

[0025] In the present invention, reference is made to Figure 1-Figure 10 , two adjacent heat dissipation boxes 5 in the heat dissipation group 4 are in sliding contact, a plurality of notches 502 are provided at a position away from the pin 302 on one side of the heat dissipation box 5, and the notches 502 are open at a position away from the pin 302, and a plurality of notches 503 are provided at a position close to the pin 302 on the other side of the heat dissipation box 5, and the notches 503 are open at a position close to the pin 302, and the positions of the notches 503 and the notches 502 are adapted, and when multiple heat dissipation boxes 5 in the same heat dissipation group 4 are all fitted with the pin 302, the adjacent two heat dissipation boxes The corresponding notch 1 502 and notch 2 503 between 5 are not connected, so that the two adjacent heat dissipation boxes 5 are only horizontally connected through the through groove 504 on the top, thereby avoiding excessive loss of cold air; and during the vertical lifting process of a certain heat dissipation box 5, the notch 2 503 on the side of the heat dissipation box 5 will move and be vertically connected with the notch 1 502 of the heat dissipation box 5 at the adjacent position, so as to guide the airflow dispersion through the reciprocating movement at intervals, thereby avoiding a large amount of cold air loss and improving the dispersion effect of the airflow, thereby avoiding heat accumulation and improving the heat dissipation efficiency.

[0026] Example 2: Reference Figure 1-Figure 12 , a heat dissipation mechanism for MOS tube of electric vehicle controller, based on embodiment 1, a plurality of air holes 111 are opened at the position of base 1 and top base 2 facing base 301, a horizontally placed extension bar 18 is installed at the side of moving block 16 facing base 301, the extension bar 18 is vertically arranged with electric guide rail 15, the extension bar 18 reciprocates along with moving block 16 in the inclined extension direction of electric guide rail 15, a plurality of slide rails 19 are installed at the position of cavity 11 away from MOS tube 3, and the plurality of slide rails 19 are distributed and arranged in the extension direction of electric guide rail 15, The slide rail 19 is set to a V-shaped structure with the middle position bent toward the direction close to the electric guide rail 15. A slide groove 191 is set in the slide rail 19. A slider 20 is connected to the slide groove 191 in a limited sliding manner. A rotating hole is opened at the top of the slider 20. The inner wall of the rotating hole is rotatably connected to a vertically extending shaft rod 21. A plurality of blades 22 are fixed to the top of the outer wall of the shaft rod 21. Springs 23 are fixed at both ends of the slide groove 191. A stop block 24 is installed at the end of the spring 23. The stop block 24 is limited to slide in the slide groove 191. The circumferential outer wall of the shaft rod 21 is located between the slider 20 and the blade 22. 2 contacts with the outer wall of the extension bar 18, so that when the extension bar 18 moves horizontally back and forth with the moving block 16, the extension bar 18 will be spaced close to the corresponding slide rail 19, and when the extension bar 18 is close to the slide rail 19, the surface of the extension bar 18 will contact the surface of the shaft rod 21, so that the extension bar 18 pushes the shaft rod 21, the slider 20 and the blade 22, so that the slider 20 moves toward one side along the slide groove 191, and the slider 20 presses the block 24 for a distance, until the extension bar 18 is away from the shaft rod 21 and the spring 24 is released. 3, the slider 20 rebounds a certain distance, and when the extension bar 18 moves back, the shaft 21 and the slider 20 are pushed to move in the opposite direction again; thus, during the reciprocating movement of the electric guide rail 15 with the extension bar 18, the slider 20, the shaft 21 and the blade 22 are reciprocated along the slide groove 191, so as to guide the airflow at the position of the air hole 111 to improve the heat dissipation and cooling effect around the base 301, and the airflow movement at the position of the air hole 111 is coordinated with the reciprocating lifting and lowering of the heat dissipation box 5 to guide the airflow, so as to further improve the airflow dispersion and cooling effect.

[0027] In the present invention, reference is made to Figure 1-Figure 12 A fixing groove is provided at the end of the extension bar 18 away from the moving block 16, and a friction pad 181 is fixed to the inner wall of the fixing groove. Both side surfaces of the friction pad 181 are flush with the surface of the extension bar 18. Through the friction pad 181 of the extension bar 18, when the extension bar 18 gradually separates from the shaft 21, the surface of the shaft 21 contacts the surface of the friction pad 181, and when the end of the extension bar 18 throws off the shaft 21, the friction force of the friction pad 181 enables the shaft 21 to rotate relative to the slider 20, and the rotating shaft 21 and the blades 22 improve the airflow dispersion effect around the air hole 111.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat dissipation mechanism for an electric vehicle controller MOS tube, comprising a base (1) and a top base (2), a plurality of MOS tubes (3) being placed between the base (1) and the top base (2), the MOS tubes (3) being provided with a base (301), pins (302) and a fixing plate (303), characterized in that: The base (1) and the top base (2) are both provided with a heat dissipation group (4) at positions facing the pins (302); the heat dissipation group (4) is provided with a plurality of heat dissipation boxes (5) that are in contact with the surfaces of the pins (302); the extension direction of the heat dissipation boxes (5) is arranged perpendicular to the extension direction of the pins (302); a cold water tank (501) is arranged inside the heat dissipation box (5); both ends of the bottom of the cold water tank (501) are connected to cold water pipes (6); a patch (7) is fixed at a position corresponding to the direction of the pins (302) of the heat dissipation box (5); a plurality of through slots (504) are provided at a position between two adjacent patches (7) on the top of the heat dissipation box (5); openings are arranged on both sides of the through slots (504); and the positions of the through slots (504) between two adjacent heat dissipation boxes (5) correspond.

2. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 1, characterized in that: The fixing plate (303) is fixed to a side position of the bottom of the base (301) away from the pin (302), and a through hole is preset on the fixing plate (303). A limit block (8) is fixed at a position corresponding to the through hole on the top of the base (1), and a limit cylinder (9) is fixed at a position corresponding to the limit block (8) on the bottom of the top seat (2). Limit strips (10) extending vertically upward are installed at both ends of the top of the base (1) located at the base (301), and a slot (201) is opened at a position corresponding to the limit strip (10) on the bottom of the top seat (2).

3. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to any one of claims 1 to 2, characterized in that: The base (1) and the top base (2) are both provided with a cavity (11), a movable groove is provided at a position corresponding to the heat dissipation group (4), and telescopic parts (12) are connected between the two ends of the bottom of the heat dissipation box (5) and the inner wall of the cavity (11).

4. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 3, characterized in that: An electric guide rail (15) is installed at a position of the cavity (11) away from the heat dissipation box (5), one end of the electric guide rail (15) is inclined towards a direction close to the base (301), a moving block (16) is connected to the electric guide rail (15), an electromagnetic block (17) is installed on the top of the moving block (16), and the moving blocks (16) in the base (1) and the top seat (2) move in opposite directions.

5. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 4, characterized in that: A magnetic attraction block (14) is installed at the bottom of the heat dissipation box (5), and a plurality of magnetic attraction blocks (14) in the heat dissipation group (4) are arranged at equal distances along the extension direction of the electric guide rail (15).

6. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 5, characterized in that: Two adjacent heat dissipation boxes (5) in the heat dissipation group (4) are in sliding contact with each other. A plurality of first notches (502) are provided on one side of the heat dissipation box (5) at a position away from the pin (302), and a plurality of second notches (503) are provided on the other side of the heat dissipation box (5) at a position close to the pin (302). The positions of the second notches (503) and the first notches (502) are adapted to each other.

7. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 5, characterized in that: The base (1) and the top base (2) are provided with a plurality of air holes (111) at positions facing the base (301), and the side of the moving block (16) facing the base (301) is provided with a horizontally placed extension bar (18), and the extension bar (18) is arranged vertically to the electric guide rail (15).

8. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 7, characterized in that: A plurality of slide rails (19) are installed at a position of the cavity (11) away from the MOS tube (3); the plurality of slide rails (19) are distributed in the extension direction of the electric guide rail (15); the slide rail (19) is arranged in a V-shaped structure with a middle position bent toward a direction close to the electric guide rail (15); and a slide groove (191) is arranged in the slide rail (19).

9. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 8, characterized in that: A slider (20) is slidably connected to the slide groove (191) in a limited position. A rotating hole is provided at the top of the slider (20). A vertically extending shaft (21) is rotatably connected to the inner wall of the rotating hole. A plurality of blades (22) are fixed to the top of the outer wall of the shaft (21). A spring (23) is fixed to both ends of the slide groove (191). A stop block (24) is installed at the end of the spring (23). The stop block (24) is slidably limited in the slide groove (191). The circumferential outer wall of the shaft (21) is located between the slider (20) and the blades (22) and contacts the outer wall of the extension strip (18).

10. The heat dissipation mechanism of the MOS tube of the electric vehicle controller according to claim 9, characterized in that: A fixing groove is formed at the end of the extension strip (18) away from the moving block (16), and a friction pad (181) is fixed to the inner wall of the fixing groove. Both side surfaces of the friction pad (181) are flush with the surface of the extension strip (18).

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