CN115173778A

CN115173778A - Motor controller for electric vehicle

Info

Publication number: CN115173778A
Application number: CN202211081073.9A
Authority: CN
Inventors: 袁海波; 李磊
Original assignee: Jiangsu Huaihai New Energy Co ltd
Current assignee: Xuzhou Zhongshun Electromechanical Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-10-11
Anticipated expiration: 2042-09-06
Also published as: CN115173778B

Abstract

The invention discloses a motor controller for an electric vehicle, which belongs to the field of controllers and comprises a substrate, wherein a waterproof box is arranged above the substrate, four corners of the bottom end surface of the substrate are fixedly connected with shock absorption buffer parts, a placing cavity is formed in the waterproof box, a controller main body is arranged in the placing cavity, a notch communicated with the placing cavity is formed in one side surface of the waterproof box, an electromagnet is fixedly connected to one side of the inner wall of the notch, a strong magnetic plate is movably connected to the other side of the inner wall of the notch, the strong magnetic plate is in magnetic repulsion with the electrified electromagnet, lifting through holes are formed in the four corners of the inner part of the waterproof box, an optical axis penetrates through the lifting through holes, the bottom end of the optical axis is fixed on the top end surface of the substrate, a top plate is fixedly connected to the position, close to the top end, of the outer side surface of the optical axis, and an inclined plane sealing assembly is arranged between the top plate and the waterproof box. According to the invention, when the electric vehicle runs on a road with deep accumulated water and seeps into the accumulated water, the motor controller can be effectively protected and prevented from being damaged.

Description

Motor controller for electric vehicle

Technical Field

The invention relates to a controller, in particular to a motor controller for an electric vehicle.

Background

Electric vehicles, namely electric drive vehicles, also known as electric drive vehicles, have become one of the main development directions of future vehicles due to the advantages of environmental protection and energy conservation along with the aggravation of environmental pollution. Electric vehicles are classified into alternating current electric vehicles and direct current electric vehicles. Generally speaking, an electric vehicle uses a battery as an energy source, and converts electric energy into mechanical energy to move through components such as a controller and a motor so as to control the current and change the speed.

The electric vehicle is driven by a motor, and a motor controller is an important device for controlling the running state of the motor. However, because of the increase of urban inland inundation caused by severe environment, when the electric vehicle runs on a road with deep ponding, the motor controller is easily damaged by seeping ponding, and the protection in the prior art is not paid attention to. Accordingly, those skilled in the art have provided a motor controller for an electric vehicle to solve the problems set forth in the background art described above.

Disclosure of Invention

The invention aims to provide a motor controller for an electric vehicle, which can effectively protect the motor controller from being damaged when accumulated water permeates into a road with deep accumulated water when the electric vehicle runs, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a motor controller for an electric vehicle comprises a substrate, wherein a waterproof box is arranged above the substrate, a damping buffer part is fixedly connected with the four corners of the bottom end face of the substrate, a placing cavity is formed in the waterproof box, a controller main body is arranged in the placing cavity, a notch communicated with the placing cavity is formed in one side face of the waterproof box, an electromagnet is fixedly connected with one side of the inner wall of the notch, the other side of the inner wall of the notch is movably connected with a strong magnetic plate, the strong magnetic plate and the electromagnet after being electrified repel each other in a magnetic force mode, lifting through holes are formed in the four corners of the inner portion of the waterproof box, an optical axis penetrates through the lifting through holes, the bottom end of the optical axis is fixed on the top end face of the substrate, a top plate is fixedly connected with the position, close to the top end, of the outer side face of the optical axis, an inclined plane sealing assembly is arranged between the top plate and the waterproof box, a water level sensor is embedded in the middle position of the other side face of the top end face of the substrate, and a waterproof cylinder top end output end of the waterproof cylinder is fixedly connected with the bottom end of the waterproof box; the controller is characterized in that abutting mechanisms are arranged at four corners of the outer side face of the controller main body, a plurality of joints are fixedly connected to the middle position of one side face of the controller main body, the joints are clamped into first slotted holes formed in the side face of the electromagnet, second slotted holes are formed in the positions, corresponding to the first slotted holes, of the side face of the strong magnetic plate, lead heads are inserted into the second slotted holes in an inserting mode, and one ends of the lead heads penetrate through the second slotted holes to be connected with the corresponding joints.

As a further scheme of the invention: the bevel seal assembly specifically comprises: lower inclined panel and last inclined panel, lower inclined panel fixes at waterproof box terminal surface, go up inclined panel swing joint in the lateral shifting groove that roof bottom face was seted up, and go up inclined panel one end fixedly connected with closing plate, it has pressure sensor to inlay on the bottom inclined plane of going up inclined panel, and is equipped with anti-drop mechanism between going up inclined panel and the lateral shifting groove.

As a still further scheme of the invention: the anti-drop mechanism specifically includes: t type slide and T type spout, T type spout is seted up on lateral shifting groove top end wall, T type slide swing joint is inside the T type spout, and T type slide bottom and last inclined plane board top fixed connection.

As a still further scheme of the invention: a plurality of telescopic holes are horizontally formed in the inner portion of the upper inclined plane plate in parallel, guide rods are arranged in the telescopic holes, one ends of the guide rods are fixedly connected with the inner wall of one side of the transverse moving groove, first spring columns are sleeved on the outer portions of the guide rods, and two ends of each first spring column are fixedly connected with the side face of the upper inclined plane plate and the inner wall of the transverse moving groove respectively.

As a still further scheme of the invention: and a sealing ring is embedded in the position of the inner side surface of the sealing plate, which corresponds to the first slotted hole.

As a still further scheme of the invention: the abutting mechanism specifically comprises: the controller comprises a controller body and is characterized in that a tightening groove is formed in the corner of the outer side face of the controller body, a vertical groove communicated with the tightening groove is formed in the top end of the tightening groove, a rotating column is arranged in the vertical groove, a threaded through hole is formed in the rotating column, a screw rod is connected to the threaded through hole in a threaded mode, the bottom end of the rotating column penetrates through the tightening groove and is fixedly connected with a pressing sheet, the bottom end of the screw rod penetrates through the pressing sheet and is fixed to the bottom end face of the tightening groove, an elastic rubber block is arranged in the tightening groove, and a limiting through hole for the screw rod to penetrate through is formed in the elastic rubber block.

As a still further scheme of the invention: the bottom end face of the waterproof box is fixedly connected with a plurality of radiating fins along the length direction, and the bottom ends of the radiating fins penetrate through the base plate.

As a still further scheme of the invention: shock attenuation bolster specifically includes: the diaphragm comprises a base and a diaphragm, wherein a circular groove is formed in the top end face of the base, a central column is fixedly connected to the center of the bottom end face of the circular groove, a vertical telescopic groove is formed in the central column, a vertical telescopic rod is arranged in the vertical telescopic groove, a piston matched with the vertical telescopic groove is fixedly connected to the bottom end of the vertical telescopic rod, the top end of the vertical telescopic rod is fixedly connected with the bottom end face of the diaphragm, a spring part is arranged between the diaphragm and the base, and the top end face of the diaphragm is fixedly connected with the bottom end face of the base plate through a screw.

As a still further scheme of the invention: the spring part specifically includes: the conical spring and the second spring column are connected into a whole from top to bottom, the conical spring is sleeved outside the vertical telescopic rod, the top end of the conical spring abuts against the bottom end face of the diaphragm, the second spring column is sleeved on the outside of the central column, and the bottom end of the second spring column is clamped in the circular groove.

As a still further scheme of the invention: the bottom end of the outer side face of the vertical telescopic rod is fixedly sleeved with an elastic corrugated silica gel sleeve, the elastic corrugated silica gel sleeve is matched with the vertical telescopic groove, the bottom end of the vertical telescopic groove is fixedly connected with a plurality of third spring columns which are uniformly placed, and the top ends of the third spring columns are fixedly connected with a buffer plate together.

Compared with the prior art, the invention has the beneficial effects that:

1. this application can go when the deeper road infiltration ponding of ponding at the electric motor car, if when the inside ponding liquid level of electric motor car reached a take the altitude, sealed with independent play of controller main part through waterproof box to carry out effectual protection to the controller main part and avoid it to receive the damage, reduce subsequent change cost of maintenance.

2. This application can go when the road infiltration ponding that ponding is darker at the electric motor car, if the inside ponding liquid level of electric motor car does not reach the take the altitude, can utilize ponding and radiating fin to dispel the heat fast, in addition, the last heat of radiating fin can also accelerate the evaporation elimination of these ponding.

3. This application can go when the deeper road infiltration ponding of ponding at the electric motor car, if the inside ponding liquid level of electric motor car reaches when the take the lead to the motor stall of take the lead to the altitude, will pop out with the wire head that the controller main part links to each other, independently sealed to the controller main part afterwards, effectively avoided the controller main part to meet the water back inside circuit board burn out for other still intact facilities of electric motor car and send wrong instruction.

4. In the process that the electric motor car went, the shock attenuation bolster can reduce the vibrations that waterproof box and wherein controller main part received, and then ensures that the lift of waterproof box is stable and the smooth lid of closing plate closes.

5. The abutting mechanism can fill a gap between the controller main body and the placing cavity when the controller main body is installed, and the controller main body is fixedly abutted inside the placing cavity.

Drawings

FIG. 1 is a schematic diagram of a motor controller for an electric vehicle;

FIG. 2 is an inside view of a waterproof case in a motor controller for an electric vehicle;

fig. 3 is a schematic structural view of a controller body in a motor controller for an electric vehicle;

FIG. 4 is a schematic structural view of a tightening mechanism in a motor controller for an electric vehicle;

FIG. 5 is a schematic view of a bevel seal assembly for use in a motor controller of an electric vehicle;

FIG. 6 is a combination view of an upper slope plate and a sealing plate in a motor controller for an electric vehicle;

FIG. 7 is a schematic view of a shock absorbing bumper used in a motor controller of an electric vehicle;

FIG. 8 is an interior view of a center post in a motor controller for an electric vehicle;

fig. 9 is a combination view of a waterproof case and heat radiating fins in a motor controller for an electric vehicle.

In the figure: 1. a substrate; 2. a shock absorbing buffer; 3. a waterproof box; 4. an optical axis; 5. a top plate; 6. a bevel seal assembly; 7. a notch; 8. an electromagnet; 9. a ferromagnetic plate; 10. a first slot; 11. a second slot; 12. a wire guide; 13. a placement chamber; 14. a lifting through hole; 15. a controller main body; 16. a joint; 17. a tightening mechanism; 18. abutting against the groove; 19. a vertical groove; 20. rotating the column; 21. a threaded through hole; 22. a screw; 23. tabletting; 24. an elastic rubber block; 25. a limiting through hole; 26. a water level sensor; 27. a waterproof cylinder; 28. a heat dissipating fin; 29. a lower inclined panel; 30. an upper bevel plate; 31. a sealing plate; 32. a pressure sensor; 33. a T-shaped sliding plate; 34. a T-shaped chute; 35. a telescopic hole; 36. a guide bar; 37. a first spring post; 38. a seal ring; 39. a base; 40. a circular groove; 41. a central column; 42. a membrane; 43. a conical spring; 44. a second spring post; 45. a vertical telescopic rod; 46. a piston; 47. a vertical telescopic slot; 48. a buffer plate; 49. a third spring post; 50. an elastic corrugated silica gel sleeve; 51. the slot is moved laterally.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 9, in an embodiment of the present invention, a motor controller for an electric vehicle includes a substrate 1, a waterproof box 3 is disposed above the substrate 1, four corners of a bottom surface of the substrate 1 are fixedly connected with shock absorbing buffers 2, a placing cavity 13 is disposed inside the waterproof box 3, a controller main body 15 is disposed inside the placing cavity 13, a notch 7 communicated with the placing cavity 13 is disposed on one side surface of the waterproof box 3, an electromagnet 8 is fixedly connected to one side of an inner wall of the notch 7, a ferromagnetic plate 9 is movably connected to the other side of the inner wall of the notch 7, magnetic force of the ferromagnetic plate 9 and the energized electromagnet 8 is repulsive, lifting through holes 14 are disposed at four corners inside the waterproof box 3, an optical axis 4 penetrates through the lifting through holes 14, a bottom end of the optical axis 4 is fixed on a top end surface of the substrate 1, a top plate 5 is fixedly connected to a position of an outer side surface of the optical axis 4 close to a top end, an inclined plane sealing assembly 6 is disposed between the top plate 5 and the waterproof box 3, a sensor 26 is embedded at a middle position of the other side surface of the waterproof box 3, a waterproof cylinder 27 is fixedly connected to a top end of the waterproof cylinder 27; the four corners of the outer side of the controller main body 15 are provided with abutting mechanisms 17, the middle position of one side of the controller main body 15 is fixedly connected with a plurality of joints 16, the joints 16 are clamped into first slotted holes 10 formed in the side of the electromagnet 8, the side of the strong magnetic plate 9 is provided with second slotted holes 11 corresponding to the positions of the first slotted holes 10, wire guides 12 are inserted into the second slotted holes 11, and one ends of the wire guides 12 penetrate through the second slotted holes 11 to be connected with the corresponding joints 16. This application can go when the deeper road infiltration ponding of ponding at the electric motor car, carries out effectual protection to controller main part 15 and avoids it to receive the damage.

In this embodiment: the bevel seal assembly 6 specifically comprises: the waterproof box comprises a lower inclined panel 29 and an upper inclined panel 30, wherein the lower inclined panel 29 is fixed on the top end face of the waterproof box 3, the upper inclined panel 30 is movably connected in a transverse moving groove 51 formed in the bottom end face of a top plate 5, a sealing plate 31 is fixedly connected to one end of the upper inclined panel 30, a pressure sensor 32 is embedded on the bottom inclined plane of the upper inclined panel 30, and an anti-falling mechanism is arranged between the upper inclined panel 30 and the transverse moving groove 51. Inclined plane seal assembly 6 can block up first slotted hole 10 when needs, and then accomplishes whole waterproof box 3's sealed, prevents that ponding from soaking waterproof box 3 contact control ware main part 15, reaches water-proof effects.

In this embodiment: anti-drop mechanism specifically includes: the T-shaped sliding plate 33 is connected with the T-shaped sliding chute 34, the T-shaped sliding chute 34 is arranged on the top end wall of the transverse moving groove 51, the T-shaped sliding plate 33 is movably connected inside the T-shaped sliding chute 34, and the bottom end of the T-shaped sliding plate 33 is fixedly connected with the top end of the upper inclined plane plate 30. The falling off prevention mechanism is provided to prevent the upper inclined plane plate 30 from falling off the traverse groove 51.

In this embodiment: a plurality of telescopic holes 35 are horizontally arranged in parallel in the upper inclined plane plate 30, a guide rod 36 is arranged in each telescopic hole 35, one end of each guide rod 36 is fixedly connected with the inner wall of one side of the transverse moving groove 51, a first spring column 37 is sleeved outside each guide rod 36, and two ends of each first spring column 37 are fixedly connected with the side surface of the upper inclined plane plate 30 and the inner wall of the transverse moving groove 51 respectively. This setting can outwards promote the last inclined plane board 30 when the waterproof box 3 descends, makes things convenient for follow-up connection wire head 12.

In this embodiment: a sealing ring 38 is embedded in the inner side surface of the sealing plate 31 at a position corresponding to the first slot 10. The sealing ring 38 improves the sealing effect between the sealing plate 31 and the first slot 10 when the sealing plate 31 is snapped into the notch 7 and engages with the electromagnet 8.

In this embodiment: the abutting mechanism 17 specifically includes: set up the tight groove 18 of supporting at controller main part 15 lateral surface corner, support the top in tight groove 18 and offer the vertical groove 19 rather than the intercommunication, and vertical inslot 19 inside is equipped with the column spinner 20, the inside screw thread through-hole 21 that has seted up of column spinner 20, and the inside threaded connection of screw thread through-hole 21 has screw rod 22, the bottom of column spinner 20 runs through to supporting tight inslot 18 inside and fixedly connected with preforming 23, preforming 23 is run through and fix on supporting tight groove 18 bottom face to screw rod 22 bottom, and support tight inslot 18 inside and be equipped with elastic rubber block 24, elastic rubber block 24 is inside sets up the spacing through-hole 25 that supplies screw rod 22 to pass. The abutting mechanism 17 can fill the gap between the controller main body 15 and the placing cavity 13 when the controller main body 15 is installed, and the controller main body 15 is fixedly abutted and fixed inside the placing cavity 13.

In this embodiment: the bottom end surface of the waterproof box 3 is fixedly connected with a plurality of radiating fins 28 along the length direction, and the bottom ends of the radiating fins 28 penetrate through the base plate 1. The controller main body 15 radiates heat while operating, and the waterproof case 3 absorbs the heat and rapidly radiates the heat through the heat radiating fins 28. Furthermore, the heat radiating fins 28 are extended through the base plate 1, and heat can be quickly radiated by contact with the accumulated water in the early stage of the immersion of the accumulated water.

In this embodiment: shock attenuation bolster 2 specifically includes: base 39 and diaphragm 42, circular slot 40 has been seted up to base 39 top end face, and circular slot 40 bottom end face center fixedly connected with center post 41, vertical flexible groove 47 has been seted up to center post 41 inside, and the inside vertical telescopic link 45 that is equipped with of vertical flexible groove 47, vertical telescopic link 45 bottom fixedly connected with and vertical flexible groove 47 assorted piston 46, and vertical telescopic link 45 top and diaphragm 42 bottom end face fixed connection, be equipped with the spring part between diaphragm 42 and the base 39, and diaphragm 42 top end face passes through screw and base plate 1 bottom end face fixed connection. In the driving process of the electric vehicle, the shock-absorbing buffer member 2 can reduce the shock to the waterproof box 3 and the controller body 15 therein, thereby ensuring the stable lifting of the waterproof box 3 and the smooth closing of the sealing plate 31.

In this embodiment: the spring piece specifically includes: conical spring 43 and second spring post 44 that link as an organic whole from top to bottom, conical spring 43 cover is outside vertical telescopic link 45, and conical spring 43 top supports on diaphragm 42 bottom end face, and second spring post 44 covers on central post 41 is outside, and second spring post 44 bottom card is in circular slot 40. The damping and buffering effect of the conical spring 43 is better.

In this embodiment: the bottom end of the outer side surface of the vertical telescopic rod 45 is fixedly sleeved with an elastic corrugated silica gel sleeve 50, the elastic corrugated silica gel sleeve 50 is matched with the vertical telescopic groove 47, the bottom end of the vertical telescopic groove 47 is fixedly connected with a plurality of uniformly placed third spring columns 49, and the top ends of the plurality of third spring columns 49 are fixedly connected with a buffer plate 48. Elastic ripple silica gel cover 50 slows down the speed that vertical telescopic link 45 descends, prolongs the cushioning time, and after vertical telescopic link 45 descends the certain distance, third spring post 49 supports vertical telescopic link 45 bottom with buffer board 48, further accomplishes the shock attenuation buffering.

The working principle of the invention is as follows: when the motor controller is used, the motor controller is vertically installed inside an electric vehicle, wherein the top end of the optical axis 4 and the bottom end of the base 39 are both fixed with a vehicle body, when urban waterlogging occurs and the electric vehicle runs on a road with deep ponding, the ponding permeates into the electric vehicle, the liquid level of the ponding reaches a certain height to contact with the integrated water level sensor 26 along with the lapse of time, the certain height is preset as the liquid level soaking height of stalling during the production detection of the motor, the water level sensor 26 sends a signal to the waterproof cylinder 27, the waterproof cylinder 27 operates to slowly jack the waterproof box 3 upwards by a certain height according to a preset program, in the process, the lifting through hole 14 of the waterproof box 3 and the optical axis 4 generate relative displacement to improve the lifting stability, and after the waterproof box 3 rises by a certain distance, the lower inclined panel 29 on the waterproof box 3 is in contact with the upper inclined panel 30, at the moment, the pressure sensor 32 is triggered to send a signal to the controller main body 15, the controller main body 15 is electrified to the electromagnet 8, and the magnetism generated by the electrification of the electromagnet 8 is repulsive to the magnetism of the strong magnetic panel 9, so that the strong magnetic panel 9 and the wire guide 12 on the strong magnetic panel are bounced off the notch 7, the controller main body 15 is independent at the moment, and then, along with the continuous rising of the waterproof box 3, the rising lower inclined panel 29 pushes the upper inclined panel 30 into the transverse moving groove 51 under the action of the inclined plane, in the process, the T-shaped sliding plate 33 continuously penetrates the T-shaped sliding groove 34, one end of the guide rod 36 continuously penetrates the telescopic hole 35, and the first spring column 37 is continuously compressed. Finally, as the upper inclined plane plate 30 moves transversely, the sealing plate 31 at one end of the upper inclined plane plate 30 is clamped into the notch 7 and is combined on the electromagnet 8, and the sealing ring 38 improves the sealing effect between the sealing plate 31 and the first slot 10, so that the waterproof box 3 is completely sealed, and accumulated water is prevented from permeating into the placing cavity 13 from the first slot 10 and contacting the controller main body 15. When whole process avoided controller main part 15 to meet water impaired, still avoided inside circuit board burnout of controller main part 15 to meet water back to give the wrong instruction for other facilities that still are intact of electric motor car.

In addition, at the in-process that the electric motor car went, shock attenuation bolster 2 can reduce the vibrations that waterproof box 3 and controller main part 15 therein received, and then ensures that waterproof box 3's lift is stable and closing of the smooth of closing plate 31, and the concrete theory of operation of shock attenuation bolster 2 is: the vibration causes the diaphragm 42 to move up and down, the vertical telescopic rod 45 at the lower end of the diaphragm 42 moves along with the diaphragm, the piston 46 also moves along with the vertical telescopic groove 47, and the conical spring 43 and the second spring column 44 deform to buffer the impact caused by the vibration. It should be noted that, among the buffering process, elasticity ripple silica gel cover 50 slows down the speed that vertical telescopic link 45 descends, and extension buffering time, after the great vertical telescopic link 45 that leads to of vibrations range descends the certain distance, third spring post 49 supports vertical telescopic link 45 bottom and takes place deformation to cushion with buffer board 48, and dual buffering can effectively cushion vibrations by a relatively large margin.

And when installing controller main part 15 in placing chamber 13, at first with connecting 16 alignment and insert corresponding first slotted hole 10 in, conveniently be connected with follow-up male wire guide 12, later fill the controller main part 15 and place the clearance between the chamber 13 through propping tight mechanism 17, with controller main part 15 dead to tightly fix inside placing chamber 13, concrete process is: clockwise turning column spinner 20, because the threaded connection of screw thread through-hole 21 and screw rod 22, column spinner 20 descends in vertical groove 19 slowly along screw rod 22, and then drive preforming 23 and descend, the preforming 23 that descends presses it to be out of shape on elastic rubber block 24, elastic rubber block 24 deformation is extruded from supporting 18 openings of groove and is filled controller main part 15 and place the clearance between the chamber 13, and then accomplish and support tightly fixedly, in addition, elastic rubber block 24 can also cushion the impact that the border angle position transmitted when using of controller main part 15, and if fall controller main part 15 and provide the buffer protection for its corner before the installation is fixed.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The motor controller for the electric vehicle is characterized by comprising a substrate (1), wherein a waterproof box (3) is arranged above the substrate (1), a damping buffer piece (2) is fixedly connected to the four corners of the bottom end face of the substrate (1), a placing cavity (13) is formed in the waterproof box (3), a controller main body (15) is arranged in the placing cavity (13), a notch (7) communicated with the placing cavity (13) is formed in one side face of the waterproof box (3), an electromagnet (8) is fixedly connected to one side of the inner wall of the notch (7), a ferromagnetic plate (9) is movably connected to the other side of the inner wall of the notch (7), the ferromagnetic plate (9) is magnetically repelled with the electromagnet (8) after electrification, a lifting through hole (14) is formed in the four corners of the waterproof box (3), an optical shaft (4) penetrates through the inside of the lifting through hole (14), the bottom end of the optical shaft (4) is fixed to the top end face of the substrate (1), a top end face of the optical shaft (4) is fixedly connected with a top plate (5) close to the position of the top end of the outer side face of the waterproof box, a water level sensor (3) is arranged between the waterproof box (3), and a water level sensor (26) is embedded in the middle of the waterproof box (3), the top output end of the waterproof cylinder (27) is fixedly connected with the bottom end of the waterproof box (3);

the lateral surface four corners position of controller main part (15) is equipped with and supports tight mechanism (17), and a side intermediate position fixedly connected with of controller main part (15) connect (16), connect (16) card and go into first slotted hole (10) that electro-magnet (8) side was seted up, second slotted hole (11) have been seted up to the position that corresponds first slotted hole (10) in strong magnetic sheet (9) side, and inside grafting of second slotted hole (11) has lead (12), lead (12) one end is run through second slotted hole (11) and is connected with joint (16) that correspond.

2. The motor controller for electric vehicles according to claim 1, characterized in that said bevel seal assembly (6), in particular comprises: lower inclined plane board (29) and last inclined plane board (30), lower inclined plane board (29) is fixed at waterproof box (3) top end face, go up inclined plane board (30) swing joint in lateral shifting groove (51) that roof (5) bottom face was seted up, and go up inclined plane board (30) one end fixedly connected with closing plate (31), inlay pressure sensor (32) on the bottom inclined plane of going up inclined plane board (30), and be equipped with anti-drop mechanism between going up inclined plane board (30) and lateral shifting groove (51).

3. The motor controller for an electric vehicle according to claim 2, wherein the drop-off prevention mechanism specifically comprises: the T-shaped sliding plate comprises a T-shaped sliding plate (33) and a T-shaped sliding groove (34), wherein the T-shaped sliding groove (34) is formed in the top end wall of the transverse moving groove (51), the T-shaped sliding plate (33) is movably connected inside the T-shaped sliding groove (34), and the bottom end of the T-shaped sliding plate (33) is fixedly connected with the top end of the upper inclined plane plate (30).

4. The motor controller for the electric vehicle as claimed in claim 2, wherein a plurality of telescopic holes (35) are horizontally arranged in parallel in the upper inclined plane plate (30), a guide rod (36) is arranged in each telescopic hole (35), one end of each guide rod (36) is fixedly connected with the inner wall of one side of the transverse moving groove (51), a first spring column (37) is sleeved outside each guide rod (36), and two ends of each first spring column (37) are respectively fixedly connected with the side surface of the upper inclined plane plate (30) and the inner wall of the transverse moving groove (51).

5. The motor controller for electric vehicles according to claim 2, wherein a sealing ring (38) is embedded in the inner surface of the sealing plate (31) at a position corresponding to the first slot (10).

6. The motor controller for electric vehicles according to claim 1, characterized in that said tightening mechanism (17) comprises: the controller comprises a controller body (15), a tightening groove (18) is formed in the outer side face corner of the controller body (15), a vertical groove (19) communicated with the tightening groove (18) is formed in the top end of the tightening groove (18), a rotating column (20) is arranged inside the vertical groove (19), a threaded through hole (21) is formed in the rotating column (20), a screw rod (22) is connected to the threaded through hole (21) in a threaded mode, the bottom end of the rotating column (20) penetrates through the tightening groove (18) and is fixedly connected with a pressing sheet (23), the pressing sheet (23) is penetrated through the bottom end of the screw rod (22) and is fixed to the bottom end face of the tightening groove (18), an elastic rubber block (24) is arranged inside the tightening groove (18), and a limiting through hole (25) for the screw rod (22) to penetrate through is formed inside the elastic rubber block (24).

7. The motor controller for the electric vehicle according to claim 1, wherein a plurality of heat dissipation fins (28) are fixedly connected to the bottom end surface of the waterproof box (3) along the length direction, and the bottom ends of the heat dissipation fins (28) penetrate through the base plate (1).

8. The motor controller for electric vehicles according to claim 1, characterized in that said shock-absorbing bumper (2) comprises in particular: base (39) and diaphragm (42), circular slot (40) have been seted up to base (39) top face, and circular slot (40) bottom end face center fixedly connected with center post (41), vertical flexible groove (47) have been seted up to center post (41) inside, and vertical flexible groove (47) inside is equipped with vertical telescopic link (45), vertical telescopic link (45) bottom fixedly connected with and vertical flexible groove (47) assorted piston (46), and vertical telescopic link (45) top and diaphragm (42) bottom end face fixed connection, be equipped with the spring part between diaphragm (42) and base (39), and diaphragm (42) top face passes through screw and base plate (1) bottom end face fixed connection.

9. The motor controller for an electric vehicle of claim 8, wherein the spring member comprises: the upper part and the lower part of the circular groove are connected into a whole, the conical spring (43) and the second spring column (44) are sleeved outside the vertical telescopic rod (45), the top end of the conical spring (43) abuts against the bottom end face of the diaphragm (42), the second spring column (44) is sleeved outside the central column (41), and the bottom end of the second spring column (44) is clamped in the circular groove (40).

10. The motor controller for the electric vehicle as claimed in claim 8, wherein an elastic corrugated silica gel sleeve (50) is fixedly sleeved at the bottom end of the outer side surface of the vertical telescopic rod (45), the elastic corrugated silica gel sleeve (50) is matched with the vertical telescopic slot (47), a plurality of uniformly arranged third spring columns (49) are fixedly connected at the bottom end of the vertical telescopic slot (47), and a buffer plate (48) is fixedly connected at the top ends of the plurality of third spring columns (49) together.