A heat dissipation mechanism for MOS transistors of an electric vehicle controller

Abstract

The present invention belongs to the technical field of electric vehicle controllers, especially a MOS tube heat dissipation mechanism for an electric vehicle controller. The following solution is now proposed, which includes a base and a top seat. A plurality of MOS tubes are placed between the base and the top seat. The MOS tube is provided with a substrate, pins and fixing chips. Heat dissipation groups are arranged at positions of the base and the top seat facing the pins. The heat dissipation group is provided with a plurality of heat dissipation boxes that are in close contact with the surface of the pins. The extending direction of the heat dissipation box is perpendicular to the extending direction of the pins. A patch is fixed at a position corresponding to the heat dissipation box facing the pin direction. A plurality of through slots are opened at positions between adjacent patches at the top of the heat dissipation box. In the present invention, the heat dissipation box perpendicular to the pins and the heat dissipation box spanning the pins of multiple MOS tubes cause the hot air to disperse along the extending direction of the heat dissipation box. By using the through slots that are interconnected at the tops of multiple heat dissipation boxes, the hot air will disperse and flow in the extending direction of the through slots.

Description

Technical Field

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

[0002] A MOS tube is a metal-oxide-semiconductor field-effect transistor, or a metal-insulator-semiconductor. In an electric vehicle controller, the MOS tube needs to dissipate heat.

[0003] Referring to the Chinese patent with the patent publication number CN213401172U, a MOS tube heat dissipation mechanism for a water pump controller is disclosed, including a substrate. A pad is welded on the top of the substrate. A lower housing is installed on the top of the pad. A MOS tube is installed inside the lower housing. The top of the lower housing is connected to an upper housing. The MOS tube is arranged between the upper housing and the lower housing. Heat dissipation fins are connected to the top of the upper housing. One side of the MOS tube is connected to a heat absorption device. One end of the heat absorption device is connected between the upper housing and the lower housing.

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

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

[0006] A MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention includes a base and a top seat. A plurality of MOS tubes are placed between the base and the top seat. The MOS tube is provided with a base body, pins and a fixing piece. Heat dissipation groups are arranged at the positions of the base and the top seat facing the pins. The heat dissipation group is provided with a plurality of heat dissipation boxes that are in fitting contact with the surface of the pins. The extending direction of the heat dissipation box is perpendicular to the extending direction of the pins. A cold water tank is arranged inside the heat dissipation box. Both ends of the bottom of the cold water tank are communicated with cold water pipes. A patch is fixed at the position of the heat dissipation box corresponding to the pin direction. A plurality of through grooves are opened at the position between adjacent patches on the top of the heat dissipation box. Both sides of the through groove are open, and the through groove positions between adjacent heat dissipation boxes correspond.

[0007] Preferably, the fixing piece is fixed at a position on the bottom of the base body away from the pins. A perforation is preset on the fixing piece. A limiting block is fixed at the position of the top of the base corresponding to the perforation. A limiting cylinder is fixed at the position of the bottom of the top seat corresponding to the limiting block. Limiting strips extending vertically upward are installed at both ends of the base body on the top of the base. A clamping groove is opened at the position of the bottom of the top seat corresponding to the limiting strip.

[0008] Preferably, cavities are provided in both the base and the top seat. Activity slots are opened at positions corresponding to the heat dissipation group. Telescopic members 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 in the cavity far from the heat dissipation box. One end of the electric guide rail is inclined towards the base. A moving block is connected to the electric guide rail. An electromagnetic block is installed on the top of the moving block. The moving blocks in the base and the top seat move in opposite directions.

[0010] Preferably, a magnetic attraction block is installed at the bottom of the heat dissipation box. Multiple magnetic attraction blocks in the heat dissipation group are arranged at equal intervals along the extension direction of the electric guide rail.

[0011] Preferably, adjacent heat dissipation boxes in the heat dissipation group are in sliding contact. A plurality of notches one are opened at a position on one side of the heat dissipation box far from the pins. A plurality of notches two are opened at a position on the other side of the heat dissipation box close to the pins. The positions of the notches two and the notches one are adapted.

[0012] Preferably, a plurality of air holes are opened at positions on the base and the top seat facing the base. An extension strip placed horizontally is installed on the side of the moving block facing the base. The extension strip is perpendicular to the electric guide rail.

[0013] Preferably, a plurality of slide rails are installed at a position in the cavity far from the MOS tube. The plurality of slide rails are arranged in the extension direction of the electric guide rail. The slide rails are arranged in a V-shaped structure with the middle position bent towards the electric guide rail. A chute is provided in the slide rail.

[0014] Preferably, a slider is connected in the chute in a limited sliding manner. A rotating hole is opened at the top of the slider. A vertically extending shaft rod is rotatably connected to the inner wall of the rotating hole. A plurality of blades are fixed to the outer wall of the top of the shaft rod. Spring one is fixed to both ends of the chute. A resisting block is installed at the end of spring one. The resisting block is connected in the chute in a limited sliding manner. The position of the outer wall of the shaft rod between the slider and the blades is in contact with the outer wall of the extension strip.

[0015] Preferably, a fixing groove is opened at the end of the extension strip far from the moving block. A friction pad is fixed to the inner wall of the fixing groove. The two side surfaces of the friction pad are flush with the surface of the extension strip.

[0016] The beneficial effects in the present invention are as follows:

[0017] 1. In the present invention, a heat dissipation box is arranged perpendicular to the pins, and the heat dissipation box straddles the pins of multiple MOS transistors, so that the hot air around the pins will be dispersed along the extension direction of the heat dissipation box. At the same time, the through grooves that communicate with each other at the tops of multiple heat dissipation boxes are used to make the hot air around the pins flow and disperse in the extension direction of the through grooves, so that even if the hot air is difficult to quickly exchange heat and cool down at the patch position, it can still be dispersed, thereby effectively dispersing the hot air and preventing the heat of the three MOS transistors from accumulating at the pin position and being difficult to quickly cool down.

[0018] 2. In the present invention, the electric guide rail drives the electromagnetic block to reciprocate, so that each heat dissipation box reciprocates up and down alternately, so that gaps are generated at different positions in the fitting position between the pins and the heat dissipation box, thereby further improving the dispersion effect of the gas flow around the pins, and further preventing the hot air from gathering and improving the operation efficiency of heat dissipation and cooling.

[0019] 3. In the present invention, during the process of the electric guide rail driving the extension bar to reciprocate, the slider, the shaft rod and the blade reciprocate along the chute, so as to guide the air flow at the air hole position to improve the heat dissipation and cooling effect around the base body, and the air flow movement at the air hole position cooperates with the reciprocating up and down of the heat dissipation box to guide the air flow, thereby further improving the air flow dispersion and cooling effect. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of the base and top seat structures of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0022] Figure 3 It is a schematic diagram of the base structure of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0023] Figure 4 It is a schematic diagram of the top seat structure of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0024] Figure 5 It is a schematic diagram of the heat dissipation box structure of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0025] Figure 6 It is a schematic diagram of the distribution structure of notch one and notch two of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0026] Figure 7 It is a schematic diagram of the distribution structure of the magnetic attraction blocks of a MOS transistor heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0027] Figure 8Schematic diagram of the internal structure of the cavity of a MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0028] Figure 9 Schematic diagram of the distribution structure of the electric guide rail and the slide rail of a MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0029] Figure 10 A MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention Figure 9 Schematic diagram of the structure of part A therein;

[0030] Figure 11 Schematic diagram of the slide rail structure of a MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention;

[0031] Figure 12 Schematic diagram of the internal structure of the chute of a MOS tube heat dissipation mechanism for an electric vehicle controller proposed by the present invention.

[0032] In the figure: 1 base, 2 top seat, 201 card slot, 3 MOS tube, 301 base body, 302 pin, 303 fixing piece, 4 heat dissipation group, 5 heat dissipation box, 501 cold water tank, 502 notch one, 503 notch two, 504 through groove, 6 cold water pipe, 7 patch, 8 limit block, 9 limit cylinder, 10 limit strip, 11 cavity, 111 air hole, 112 installation groove, 12 telescopic part, 13 vertical rod, 14 magnetic attraction block, 15 electric guide rail, 16 moving block, 17 electromagnetic block, 18 extension bar, 181 friction pad, 19 slide rail, 191 chute, 20 slider, 21 shaft rod, 22 blade, 23 spring, 24 abutting block. Detailed implementation manners

[0033] Example 1: Refer to Figures 1-6, a MOS tube heat dissipation mechanism for an electric vehicle controller, comprising a base 1 and a top seat 2. A plurality of MOS tubes 3 are placed between the base 1 and the top seat 2. The MOS tube 3 is provided with a base body 301, pins 302 and a fixing piece 303. One side of the base body 301 is provided with a plurality of horizontally extending pins 302. Heat dissipation groups 4 are arranged at positions of the base 1 and the top seat 2 facing the pins 302. The heat dissipation group 4 is provided with a plurality of heat dissipation boxes 5 which are in surface contact with the surfaces of the pins 302. The heat dissipation boxes 5 are arranged to extend in the horizontal direction between the two ends of the base 1. The extending direction of the heat dissipation boxes 5 is perpendicular to the extending direction of the pins 302. A cold water tank 501 is arranged in the heat dissipation box 5. Both ends of the bottom of the cold water tank 501 are communicated with cold water pipes 6. A through groove is formed at a position of the heat dissipation box 5 corresponding to the direction of the pins 302. A patch 7 is fixed on the inner wall of the through groove. The outer wall of the patch 7 is in contact with the surface of the pin 302. A plurality of through slots 504 are formed at positions between adjacent two patches 7 at the top of the heat dissipation box 5. Both sides of the through slots 504 are open, and the positions of the through slots 504 between adjacent two heat dissipation boxes 5 correspond to each other. During use, a plurality of MOS tubes 3 to be connected are equidistantly distributed and installed at positions between the base 1 and the top seat 2, and the plurality of heat dissipation boxes 5 on the base 1 and the top seat 2 are in contact with the surfaces of the pins 302 in the MOS tube 3, and one heat dissipation box 5 is simultaneously in contact with the pins 302 of a plurality of MOS tubes 3, so as to use the cold water flowing in the heat dissipation box 5 to exchange heat and cool down the pins 302; through the heat dissipation box 5 perpendicular to the pins 302 and the heat dissipation box 5 straddling the pins 302 of a plurality of MOS tubes 3, the hot air around the pins 302 will be dispersed along the extending direction of the heat dissipation box 5, and at the same time, by using the through slots 504 communicating with each other at the tops of the plurality of heat dissipation boxes 5, the hot air around the pins 302 will flow and disperse in the extending direction of the through slots 504, that is, in the direction perpendicular to the heat dissipation box 5, so that even if the hot air is difficult to exchange heat and cool down quickly from the position of the patch 7, it can be dispersed, thus effectively dispersing the hot air and avoiding the accumulation of heat of the three MOS tubes 3 at the position of the pins 302 and being difficult to cool down quickly.

[0034] In the present invention, with reference to Figures 1-6, the fixing piece 303 is fixed to a position on the bottom side of the base body 301 away from the pin 302. A perforation is preset on the fixing piece 303. A limiting block 8 is fixed at a position on the top of the base 1 corresponding to the perforation. The outer wall of the limiting block 8 contacts the inner wall of the perforation and the limiting block 8 extends upward out of the perforation. A limiting cylinder 9 is fixed at a position on the bottom of the top seat 2 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. Limiting strips 10 extending vertically upward are installed at both ends of the base 1 on the top of the base body 301. The top ends of the limiting strips 10 are located above the outer wall of the top of the base body 301. A clamping groove 201 is formed at a position on the bottom of the top seat 2 corresponding to the limiting strip 10. The top end of the limiting strip 10 is clamped with the clamping groove 201. During the installation and use process, the MOS transistor 3 is placed at a position between the corresponding two limiting strips 10, and the perforation on the fixing piece 303 is sleeved on the corresponding limiting block 8, so as to conveniently and accurately place and limit the MOS transistor 3. At this time, the bottom of the pin 302 contacts the tops of a plurality of heat dissipation boxes 5 on the base 1, and there is a gap between the bottom of the base body 301 and the top surface of the base 1 due to the fixing piece 303; then the top seat 2 is installed, so that the clamping groove 201 on the top seat 2 corresponds to the limiting strip 10 and the position of the limiting cylinder 9 corresponds to the limiting block 8 to realize the installation of the top seat 2. At this time, the bottom end of the limiting cylinder 9 contacts the outer wall of the top of the fixing piece 303, and the bottom of the heat dissipation box 5 on the top seat 2 contacts the outer wall of the top of the pin 302, and there is a gap between the outer wall of the bottom of the top seat 2 and the outer wall of the top of the base body 301 due to the limiting strip 10; thus, while conveniently limiting and installing the MOS transistor 3, the upper and lower positions of the pin 302 are cooled by contacting the surface of the heat dissipation box 5, the top and bottom outer walls of the base body 301 can have gaps to ensure air flow, and the water flowing in the heat dissipation box 5 generates a temperature difference with other positions to guide air flow to improve the cooling effect on the position of the base body 301.

[0035] In the present invention, referring to Figures 1-6 , cavities 11 are provided in both the base 1 and the top seat 2. An activity groove is formed at a position on the cavity 11 corresponding to the heat dissipation group 4. Telescopic members 12 are connected between both ends of the bottom of the heat dissipation box 5 and the inner wall of the cavity 11. An installation groove 112 is formed at a position on the inner wall of the cavity 11 corresponding to the telescopic member 12. The cold water pipe 6 is arranged in a hose structure. The telescopic member 12 is provided with a rod body and a cylinder body in sliding connection. A second spring is connected between the inner walls of the rod body and the cylinder body 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.

[0036] In the present invention, referring to Figures 1-10, an embedding groove is provided at a position of the cavity 11 away from the heat dissipation box 5. An electric guide rail 15 is installed in the embedding groove. The electric guide rail 15 is inclined on the horizontal plane. One end of the electric guide rail 15 is inclined towards the direction close to the base body 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. The electric guide rail 15 drives the moving block 16 and the electromagnetic block 17 to reciprocate in the horizontal direction. 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. A magnetic attraction block 14 is installed at the bottom end of the vertical rod 13. A plurality of magnetic attraction blocks 14 in the heat dissipation group 4 are arranged at equal intervals along the extension direction of the electric guide rail 15. That is, a plurality of magnetic attraction blocks 14 in the same heat dissipation group 4 are inclined to be distributed, and the inclination directions of the plurality of magnetic attraction blocks 14 are parallel to the inclination direction of the electric guide rail 15; during the process that the electric guide rail 15 drives the electromagnetic block 17 to reciprocate in the horizontal direction, when the electromagnetic block 17 approaches the corresponding magnetic attraction block 14, the magnetic attraction force will cause the magnetic attraction block 14 and the corresponding heat dissipation box 5 to move into the cavity 11, and a gap will be opened between the heat dissipation box 5 and the pin 302. When the electromagnetic block 17 is away from the corresponding magnetic attraction block 14, the spring two in the telescopic member 12 is used to reset the heat dissipation box 5 to contact the surface of the pin 302. Thus, by driving the electromagnetic block 17 to reciprocate by the electric guide rail 15, each heat dissipation box 5 is alternately lifted and lowered reciprocally, so that the fitting positions of the pins 302 and the heat dissipation boxes 5 have gaps at different positions, thereby further improving the dispersion effect of the gas flow around the pins 302, further avoiding the aggregation of hot air and improving the operation efficiency of heat dissipation and cooling; and through the inclined setting of the electric guide rail 15 and the distribution setting of the magnetic attraction blocks 14, the distance between adjacent magnetic attraction blocks 14 is increased.

[0037] In the present invention, referring to Figures 1-10 , the adjacent two heat dissipation boxes 5 in the heat dissipation group 4 are in sliding contact. A plurality of first notches 502 are provided at a position of one side of the heat dissipation box 5 away from the pin 302. The first notches 502 are open at a position away from the pin 302. A plurality of second notches 503 are provided at a position of the other side of the heat dissipation box 5 close to the pin 302. The second notches 503 are open at a position close to the pin 302. The positions of the second notches 503 and the first notches 502 are adapted. When the plurality of heat dissipation boxes 5 in the same heat dissipation group 4 are all in contact with the pin 302, the corresponding first notches 502 and second notches 503 between the adjacent two heat dissipation boxes 5 are not communicated, so that only the top through slots 504 between the adjacent two heat dissipation boxes 5 are horizontally communicated, thereby avoiding excessive loss of cold air; and during the vertical lifting and lowering process of a certain heat dissipation box 5, the second notches 503 on the side of the heat dissipation box 5 will move to be vertically communicated with the first notches 502 of the adjacent heat dissipation box 5 at the adjacent position, so as to guide the dispersion of the air flow through the reciprocating movement at intervals, improve the dispersion effect of the air flow while avoiding a large amount of loss of cold air, and avoid heat accumulation and improve the heat dissipation efficiency.

[0038] Embodiment 2: Referring toFigures 1-12 , an MOS tube heat dissipation mechanism for an electric vehicle controller. On the basis of Embodiment 1, a plurality of air holes 111 are opened at the positions of the base 1 and the top seat 2 facing the base body 301. A horizontally placed extension bar 18 is installed on the side of the moving block 16 facing the base body 301. The extension bar 18 is perpendicular to the electric guide rail 15. The extension bar 18 reciprocates along the inclined extension direction of the electric guide rail 15 as the moving block 16 moves. A plurality of slide rails 19 are installed at positions in the cavity 11 far from the MOS tube 3. The plurality of slide rails 19 are arranged in the extension direction of the electric guide rail 15. The slide rail 19 is arranged in a V-shaped structure with the middle position bent towards the direction close to the electric guide rail 15. A chute 191 is arranged in the slide rail 19. A slider 20 is connected in the chute 191 in a limited sliding manner. A rotating hole is opened at the top of the slider 20. A vertically extending shaft rod 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 rod 21. Springs 23 are fixed at both ends of the chute 191. A stopper 24 is installed at the end of the spring 23. The stopper 24 is slidably limited in the chute 191. The position of the outer circumference of the shaft rod 21 between the slider 20 and the blades 22 is in contact with the outer wall of the extension bar 18. Thus, during the process of the extension bar 18 reciprocating horizontally with the moving block 16, the extension bar 18 will approach the corresponding slide rail 19 at intervals. When the extension bar 18 approaches the slide rail 19, the surface of the extension bar 18 will contact the surface of the shaft rod 21. Thus, the extension bar 18 is used to push the shaft rod 21, the slider 20 and the blades 22, so that the slider 20 moves along the chute 191 towards one side, and the slider 20 will squeeze the stopper 24 for a certain distance until the extension bar 18 moves away and disengages from the shaft rod 21. Then, under the elastic force of the spring 23, the slider 20 rebounds a certain distance. When the extension bar 18 moves back, it will push the shaft rod 21 and the slider 20 to move in the reverse direction again. Thus, during the process of the electric guide rail 15 driving the extension bar 18 to reciprocate, the slider 20, the shaft rod 21 and the blades 22 reciprocate along the chute 191 to guide the air flow at the position of the air hole 111, thereby improving the heat dissipation and cooling effect around the base body 301. And through the air flow movement at the position of the air hole 111 and the reciprocating lifting of the heat dissipation box 5 to guide the air flow, the air flow dispersion and cooling effect is further improved.

[0039] In the present invention, referring to Figures 1-12 , a fixing groove is opened at the end of the extension bar 18 far from the moving block 16. A friction pad 181 is fixed to the inner wall of the fixing groove. The surfaces on both sides 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 disengages from the shaft rod 21, the surface of the shaft rod 21 contacts the surface of the friction pad 181. When the end of the extension bar 18 swings away from the shaft rod 21, the shaft rod 21 can rotate relative to the slider 20 through the frictional force of the friction pad 181. And the air flow dispersion effect around the air hole 111 is improved by the rotating shaft rod 21 and the blades 22.

[0040] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall 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 surface of the pins (302). The extension direction of the heat dissipation boxes (5) is perpendicular to the extension direction of the pins (302). A cold water tank (501) is provided inside the heat dissipation box (5). Both ends of the bottom of the cold water tank (501) are connected with cold water pipes (6). A through groove is provided at a position corresponding to the direction of the pins (302). A patch (7) is fixed on the inner wall of the through groove. The outer wall of the patch (7) is in contact with the surface of the pins (302). A plurality of horizontally extending through grooves (504) are provided at a position between two adjacent patches (7) on the top of the heat dissipation box (5). The extension direction of the through grooves (504) is perpendicular to the connection direction of the two adjacent patches (7). The two sides of the through grooves (504) are open. The positions of the through grooves (504) between the 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 embedding groove is provided in the cavity (11) at a position 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 arranged obliquely on a horizontal plane, and one end of the electric guide rail (15) is inclined toward a 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 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 at a position away from the pin (302) on one side of the heat dissipation box (5), and a plurality of second notches (503) are provided at a position close to the pin (302) on the other side of the heat dissipation box (5). The positions of the second notches (503) and the first notches (502) are adapted to each other. During the vertical lifting process of a heat dissipation box (5), the second notches (503) on the side of the heat dissipation box (5) will move and vertically communicate with the first notches (502) of the heat dissipation box (5) at an adjacent position.

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).

Images