A new energy automobile motor controller heat dissipation structure

Abstract

The application relates to the technical field of motor controllers, in particular to a new energy automobile motor controller heat dissipation structure, which comprises a mounting box, a triggering assembly and an emergency assembly, the triggering assembly is arranged at a triggering groove, the emergency assembly comprises a starting mechanism arranged in a water inlet pipe and a cooling mechanism arranged on the side wall of a heat dissipation groove, through the arrangement of the triggering assembly, the starting and stopping of the emergency assembly are controlled, the emergency assembly can be started when the temperature is relatively high, the waste of the electric quantity of the electric car is avoided, and the utilization efficiency of the electric energy is improved; through the arrangement of the starting mechanism and the cooling mechanism, the cooling liquid is rapidly cooled when entering the middle section of the flow guide channel, the temperature of the cooling liquid is prevented from increasing after cooling, and the heat dissipation efficiency is reduced.

Description

Technical Field

[0001] This invention relates to the field of motor controller technology, specifically a heat dissipation structure for a new energy vehicle motor controller. Background Technology

[0002] As the "brain" of a motor system, the motor controller plays a crucial role in modern industry, intelligent equipment, and new energy fields. It ensures efficient and stable motor operation by precisely controlling the motor's start, stop, speed, torque, and direction, meeting the needs of various complex application scenarios. By adjusting the input voltage, current, or frequency, the motor controller can achieve precise control of the motor's speed and torque, suitable for a variety of operating conditions ranging from low-speed, high-torque to high-speed, low-torque.

[0003] CN208338138U discloses a vehicle and its motor control device, including a motor controller cooling housing. The motor controller cooling housing includes a enclosure for housing the motor controller; the enclosure has a cooling channel for coolant to flow and cool the motor controller, and cooling fins are provided within the cooling channel. By adopting the above structure and setting cooling fins within the cooling channel to increase heat conduction and the heat dissipation area of ​​the cooling channel, the maximum heat dissipation capacity of the water cooling system is achieved.

[0004] However, when the aforementioned motor controller cooling housing is in use, the coolant enters the heat dissipation channel from the cooling water inlet, absorbs the heat from the motor radiator, and then exits from the cooling water outlet. However, the heat dissipation channel is relatively long. When the motor controller operates at a high pressure and the motor controller temperature is also high, the coolant heats up rapidly after entering the heat dissipation channel, resulting in a poor cooling effect of the coolant on the latter half of the heat dissipation channel. Summary of the Invention

[0005] The purpose of this invention is to provide a heat dissipation structure for a new energy vehicle motor controller to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A heat dissipation structure for a new energy vehicle motor controller, comprising:

[0008] The installation box has a heat dissipation groove on the back, a guide channel inside the heat dissipation groove, an inlet pipe and an outlet pipe on the wall of the heat dissipation groove, and a sealing cover inside the heat dissipation groove. The sealing cover has an emergency groove and a trigger groove.

[0009] A triggering component is disposed at the triggering slot. The triggering component includes a protective shell inserted into the wall of the triggering slot, a thin tube disposed within the protective shell, a flow channel formed on the protective shell, a mercury tube disposed within the flow channel and communicating with the thin tube, an electrode one disposed on the thin tube, an electrode two disposed within the mercury tube, a battery disposed on the bottom wall of the protective shell and connected to the electrode one and the electrode two, and a transmitter disposed on the bottom wall of the protective shell and connected to the battery.

[0010] An emergency component includes an activation mechanism housed within the inlet pipe and a cooling mechanism mounted on the side wall of the heat dissipation tank. Coolant enters the guide channel from the inlet pipe and flows out from the outlet pipe. When the coolant flows through the protective shell at the outlet pipe, it contacts the mercury tube via the flow channel. As the coolant temperature rises, it heats the mercury tube, causing the mercury to rise and enter the thin tube. When the mercury contacts electrode one, the battery and transmitter connect. The transmitter sends a signal, causing the activation mechanism to block the guide channel and guide the coolant into the cooling mechanism for cooling before returning it to the guide channel. This continues until the coolant flows through the mercury tube, causing the temperature to drop and the mercury to fall into the thin tube, detaching the mercury from electrode one. This de-energizes the transmitter, and the activation mechanism reopens the guide channel.

[0011] Preferably, a limiting plate is provided in the middle section of the guide channel, and a through hole is provided on the limiting plate; a partition is provided at the emergency trough.

[0012] Preferably, when the sealing cap is inserted into the heat dissipation groove, the partition plate adheres to the limiting plate.

[0013] Preferably, the starting mechanism includes a connecting member disposed on the partition and a reversing member disposed on the connecting member. The connecting member includes a base tube inserted into the partition, a movable tube disposed in the base tube, a piston one and a piston two disposed on the movable tube, a fixed rod disposed on the base tube, a limiting through tube disposed on the fixed rod, a displacement groove formed on the limiting through tube, and a steering tube disposed on the base tube.

[0014] Preferably, the reversing component includes a power rod disposed within the limiting through pipe, a connecting pipe disposed on the power rod and passing through the displacement groove and connected to the movable pipe, a plug plate disposed on the limiting through pipe, a bracket disposed on the bottom wall of the mounting box, a telescopic rod disposed on the bracket and passing through the heat dissipation groove wall and connected to one end of the power rod, an L-shaped rod disposed at the other end of the power rod, and a conical plug disposed on the L-shaped rod.

[0015] Preferably, when the mercury contacts the first electrode, the battery and the transmitter are connected. The telescopic rod drives the power rod to move, causing the movable tube to move to fit against the stopper plate. This moves the opening at the connection between the steering tube and the base tube out from between the first and second pistons. Simultaneously, the conical plug is inserted into the through hole, allowing coolant to enter the steering tube while preventing coolant from passing through the movable tube and the through hole. When the mercury detaches from the first electrode, the telescopic rod drives the power rod to move in the opposite direction, causing the movable tube to detach from the stopper plate. This moves the opening at the connection between the steering tube and the base tube back between the first and second pistons. Simultaneously, the conical plug leaves the through hole, preventing coolant from entering the steering tube while allowing coolant to pass through the movable tube and the through hole.

[0016] Preferably, the cooling mechanism includes an emergency pipe disposed on the wall of the heat dissipation tank, a cooling component disposed on the emergency pipe, and a ventilation component disposed on the emergency pipe. The emergency pipe includes an emergency inner pipe with one end connected to the diverting pipe and the other end connected to the heat dissipation tank, a heat insulation pipe disposed on the outer wall of the emergency inner pipe, and a one-way valve disposed on the emergency inner pipe.

[0017] Preferably, the cooling component includes a heat dissipation pipe disposed on the emergency inner pipe, a mesh heat-conducting sheet inserted into and passing through the heat dissipation pipe, a heat dissipation hole opened on the mesh heat-conducting sheet and located in the heat dissipation pipe, a dustproof plate disposed on the heat dissipation pipe, an outer cover pipe disposed on the dustproof plate, and a semiconductor cooling chip disposed on the mesh heat-conducting sheet.

[0018] Preferably, the ventilation component includes a rotating ring disposed on the heat dissipation pipe, a blade and a gear one disposed on the rotating ring, a gear two meshing with the gear one, and a motor disposed on the mounting box and connected to the gear two.

[0019] Preferably, when the coolant enters the emergency inner pipe and flows through the heat dissipation pipe, the semiconductor cooling chip cools the mesh heat-conducting plate, so that the heat of the coolant flowing through the mesh heat-conducting plate and the heat dissipation holes is absorbed by the mesh heat-conducting plate, and the motor drives the blades to rotate, carrying away the heat on the semiconductor cooling chip and the mesh heat-conducting plate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention controls the start and stop of the emergency component by setting the trigger component, so that the emergency component can be started when the temperature is high, avoiding wasting the electric vehicle's electricity and improving the efficiency of electric energy utilization. The setting of the starting mechanism and the cooling mechanism allows the coolant to be cooled quickly when it enters the middle section of the guide channel, avoiding the temperature rise of the coolant after cooling and reducing the heat dissipation efficiency. Attached Figure Description

[0022] Figure 1 This is a bottom-view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation box of the present invention;

[0024] Figure 3 for Figure 2 Enlarged schematic diagram of area A structure in the image;

[0025] Figure 4 This is a schematic diagram of the structure of the present invention with the installation box concealed.

[0026] Figure 5 This is a schematic diagram of the triggering component of the present invention;

[0027] Figure 6 This is a cross-sectional view of the triggering component of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the starting mechanism of the present invention;

[0029] Figure 8 This is a cross-sectional view of the starting mechanism of the present invention;

[0030] Figure 9 This is a schematic diagram of the cooling mechanism of the present invention;

[0031] Figure 10 This is a schematic diagram of the cooling mechanism of the present invention after the outer casing tube is concealed;

[0032] Figure 11 This is a front view schematic diagram of the cooling mechanism of the present invention after the outer casing tube is hidden;

[0033] Figure 12 This is a schematic diagram of the emergency pipe of the present invention.

[0034] In the diagram: 1. Mounting box; 2. Heat dissipation slot; 3. Flow channel; 4. Inlet pipe; 5. Outlet pipe; 6. Sealing cap; 7. Emergency slot; 8. Trigger slot; 9. Protective shell; 10. Thin tube; 11. Flow channel; 12. Mercury tube; 13. Electrode 1; 14. Electrode 2; 15. Battery; 16. Transmitter; 17. Limiting plate; 18. Through hole; 19. Partition plate; 20. Base tube; 21. Movable tube; 22. Piston 1; 23. Piston 2; 24. Fixing rod; 25. Limiting through tube 26. Displacement groove; 27. Steering tube; 28. Power rod; 29. ​​Connecting tube; 30. Plug plate; 31. Bracket; 32. Telescopic rod; 33. L-shaped rod; 34. Conical plug; 35. Emergency inner tube; 36. Insulation tube; 37. One-way valve; 38. Heat dissipation tube; 39. Mesh heat conduction sheet; 40. Heat dissipation hole; 41. Dustproof plate; 42. Outer cover tube; 43. Semiconductor cooling chip; 44. Rotating ring; 45. Blade; 46. Gear one; 47. Gear two; 48. Motor. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 12 The present invention provides a technical solution:

[0037] A heat dissipation structure for a new energy vehicle motor controller, comprising:

[0038] Mounting box 1 has a heat dissipation slot 2 on its back. Mounting box 1 is used to install motor 48 controller. The heat dissipation slot 2 has a guide channel 3. The wall of the heat dissipation slot 2 has an inlet pipe 4 and an outlet pipe 5. The coolant enters the guide channel 3 through the inlet pipe 4 to dissipate heat from the motor 48 controller and then flows out through the outlet pipe 5. The heat dissipation slot 2 has a sealing cover 6. The sealing cover 6 has an emergency slot 7 and a trigger slot 8. The sealing cover 6 is fixedly connected to the side wall of the heat dissipation slot 2 by bolts and sealing rings. The emergency slot 7 is located at the outlet pipe 5, and the trigger slot 8 is located at the inlet pipe 5. On the opposite side of water pipe 4 and water outlet pipe 5, a limiting plate 17 is provided in the middle section of the guide channel 3. The limiting plate 17 is fixedly connected to the side wall of the guide channel 3 by means of integral molding or other methods. The middle section of the guide channel 3 is located on the opposite side of water inlet pipe 4 and water outlet pipe 5. A through hole 18 is opened on the limiting plate 17. A partition 19 is provided at the emergency trough 7. The partition 19 is fixedly connected to the side wall of the emergency trough 7 by means of integral molding or welding. When the sealing cover 6 is inserted into the heat dissipation trough 2, the partition 19 fits against the limiting plate 17. A sealing gasket can be set on the partition 19 so that the partition 19 can fit tightly against the limiting plate 17.

[0039] The trigger assembly is located at the trigger slot 8 and includes a protective shell 9, a thin tube 10, a flow channel 11, a mercury tube 12, an electrode 13, an electrode 2 14, a battery 15, and a transmitter 16. The protective shell 9 is fixedly connected to the side wall of the trigger slot 8 by welding or other methods. The thin tube 10 is located inside the protective shell 9 and is fixedly connected to the protective shell 9 by adhesive. The flow channel 11 is formed on the protective shell 9, and the mercury tube 12 is located inside the flow channel 11 and connected to the protective shell 9 by adhesive. The thin tube 10 is connected, and the mercury tube 12 is fixedly connected to the side wall of the flow channel 11 by means of adhesive or other methods. The mercury tube 12 is fixedly connected to the thin tube 10 by means of integral molding or other methods. Mercury is stored in the mercury tube 12. Electrode 13 is disposed on the thin tube 10 and is fixedly connected to the thin tube 10 by means of adhesive or other methods. Electrode 14 is disposed inside the mercury tube 12 and is fixedly connected to the mercury tube 12 by means of adhesive or other methods. The battery 15 is disposed on the bottom wall of the protective shell 9 and... The battery 15 is fixedly connected to the bottom wall of the protective shell 9 by means of screws or other means, and connected to electrode 13 and electrode 2 14. The transmitter 16 is mounted on the bottom wall of the protective shell 9 and connected to the battery 15. The transmitter 16 is fixedly connected to the bottom wall of the protective shell 9 by means of screws or other means. The battery 15 is electrically connected in series with electrode 13, electrode 2 14 and transmitter 16 by means of wires or other means. The coolant enters the guide channel 3 from the inlet pipe 4 and flows out from the outlet pipe 5. When the coolant... When the coolant flows through the protective shell 9 at the outlet pipe 5, the coolant comes into contact with the mercury tube 12 through the flow channel 11. When the temperature of the coolant rises, it heats the mercury tube 12, causing the mercury in the mercury tube 12 to rise into the thin tube 10. When the mercury contacts the electrode 13, the battery 15 and the transmitter 16 are connected, and the transmitter 16 sends a signal. When the coolant flows through the mercury tube 12, the temperature drops to the point that the mercury falls in the thin tube 10, causing the mercury to separate from the electrode 13, and the transmitter 16 is de-energized.

[0040] The emergency component includes a starting mechanism installed inside the water inlet pipe 4 and a cooling mechanism installed on the side wall of the heat dissipation tank 2. The starting mechanism includes a connecting member installed on the partition plate 19 and a reversing member installed on the connecting member. The connecting member includes a base pipe 20, a movable pipe 21, a piston 1 22, a piston 23, a fixed rod 24, a limiting through pipe 25, a displacement groove 26, and a steering pipe 27. The base pipe 20 is inserted into the partition plate 19 and is fixedly connected to the partition plate 19 by welding or other means. The movable pipe 21 is installed inside the base pipe 20 and is movably connected to the base pipe 20. The piston 1 22 and piston 23 are installed on the movable pipe 21. Piston 22 and piston 23 are fixedly connected to the movable tube 21 by means of adhesive or screws, respectively. Piston 22 and piston 23 are linearly distributed on the movable tube 21. Piston 22 and piston 23 are movably connected to the base tube 20, respectively. Fixed rod 24 is set on the base tube 20 and is fixedly connected to the base tube 20 by means of welding, etc. Limiting tube 25 is set on the fixed rod 24 and is fixedly connected to the fixed rod 24 by means of welding, etc. Displacement groove 26 is opened on the limiting tube 25. Steering tube 27 is set on the base tube 20 and is fixedly connected to the base tube 20 by means of integral molding, etc.

[0041] The reversing components include a power rod 28, a connecting pipe 29, a stopper plate 30, a bracket 31, a telescopic rod 32, an L-shaped rod 33, and a conical stopper 34. The power rod 28 is installed inside the limiting through pipe 25 and is movably connected to the limiting through pipe 25. The connecting pipe 29 is installed on the power rod 28 and passes through the displacement groove 26 to connect with the movable pipe 21. The connecting pipe 29 is fixedly connected to the power rod 28 by welding or other means. The other end of the connecting pipe 29 is fixedly connected to the movable pipe 21 by welding or other means. The stopper plate 30 is installed on the limiting through pipe 25. The stopper plate 30 is fixedly connected to the limiting pipe 25 by welding or other means. The bracket 31 is set on the bottom wall of the mounting box 1 and is fixedly connected to the bottom wall of the mounting box 1 by welding or other means. The telescopic rod 32 is set on the bracket 31 and passes through the wall of the heat dissipation groove 2 and is connected to one end of the power rod 28. The telescopic rod 32 is fixedly connected to the bracket 31 by bolts or other means. The telescopic rod 32 is fixedly connected to the power rod 28 by bolts or other means. The telescopic rod 32 is movably connected to the wall of the heat dissipation groove 2 by a dynamic sealing ring. The L-shaped rod 33 Located at the other end of the power rod 28, the L-shaped rod 33 is fixedly connected to the L-shaped rod 33 by means of integral molding or welding. The conical plug 34 is set on the L-shaped rod 33 and is fixedly connected to the L-shaped rod 33 by means of screws or adhesive. When the mercury contacts electrode 13, the battery 15 and the transmitter 16 are connected. The telescopic rod 32 drives the power rod 28 to move, causing the movable tube 21 to move to fit against the plug plate 30, so that the opening at the connection between the steering tube 27 and the base tube 20 is moved out from between piston 1 22 and piston 23. At the same time, the conical plug 34 is inserted into the through hole 18, allowing coolant to enter the steering pipe 27 while preventing coolant from passing through the movable pipe 21 and the through hole 18. When the mercury leaves the electrode 13, the telescopic rod 32 drives the power rod 28 to move in the opposite direction, causing the movable pipe 21 to move away from the plug plate 30. This causes the opening at the connection between the steering pipe 27 and the base pipe 20 to be moved back between the piston 1 22 and the piston 2 23. At the same time, the conical plug 34 leaves the through hole 18, preventing coolant from entering the steering pipe 27 while allowing coolant to pass through the movable pipe 21 and the through hole 18.

[0042] The cooling mechanism includes an emergency pipe installed on the wall of the heat dissipation tank 2, a cooling component installed on the emergency pipe, and a ventilation component. The emergency pipe includes an emergency inner pipe 35, an insulation pipe 36, and a one-way valve 37. One end of the emergency inner pipe 35 is connected to the diverting pipe 27 and the other end is connected to the heat dissipation tank 2. The emergency inner pipe 35 is fixedly connected to the diverting pipe 27 by welding or other means. The emergency inner pipe 35 is fixedly connected to the side wall of the heat dissipation tank 2 by welding or other means. The insulation pipe 36 is installed on the outer wall of the emergency inner pipe 35 and is made of insulation material. The one-way valve 37 is installed on the emergency inner pipe 35 and is fixedly connected to the emergency inner pipe 35 by threaded connection.

[0043] The cooling component includes a heat dissipation pipe 38, a mesh heat conduction sheet 39, heat dissipation holes 40, a dust-proof plate 41, an outer cover pipe 42, and a semiconductor refrigeration sheet 43. The heat dissipation pipe 38 is arranged on the emergency inner pipe 35, and the heat dissipation pipe 38 is fixedly connected to the emergency inner pipe 35 by means of welding or the like. The mesh heat conduction sheet 39 is inserted on the heat dissipation pipe 38 and penetrates through the heat dissipation pipe 38. The mesh heat conduction sheet 39 is fixedly connected to the heat dissipation pipe 38 by means of welding or the like. The mesh heat conduction sheet 39 is arranged in a "rice" shape. The heat dissipation holes 40 are opened on the mesh heat conduction sheet 39 and are located inside the heat dissipation pipe 38. The dust-proof plate 41 is arranged on the heat dissipation pipe 38, and the dust-proof plate 41 is fixedly connected to the heat dissipation pipe 38 by means of welding or the like. The outer cover pipe 42 is arranged on the dust-proof plate 41, and the outer cover plate is fixedly connected to the dust-proof plate 41 by means of welding or the like. The semiconductor refrigeration sheet 43 is arranged on the mesh heat conduction sheet 39, and the semiconductor refrigeration sheet 43 is fixedly connected to the mesh heat conduction sheet 39 by means of setting screws or the like.

[0044] The ventilation component includes a rotating ring 44, blades 45, a first gear 46, a second gear 47, and a motor 48. The rotating ring 44 is arranged on the heat dissipation pipe 38, and the rotating ring 44 is rotatably connected to the heat dissipation pipe 38 by means of setting bearings or the like. The blades 45 are arranged on the rotating ring 44, and the blades 45 are fixedly connected to the rotating ring 44 by means of setting bolts or the like. The first gear 4 six is fixedly connected to the rotating ring 44 by means of interference fit and setting flat keys or the like. The second gear 47 meshes with the first gear 46. The motor 48 is arranged on the installation box 1 and is connected to the second gear 47. The motor 48 is fixedly connected to the installation box 1 by means of setting bolts or the like. The second gear 47 is fixedly connected to the motor 48 by means of interference fit and setting flat keys or the like. An 80C51 single-chip microcomputer and a signal receiver are further arranged on the installation box z z 1. The signal receiver is used to receive the signal sent by the transmitter 16. The motor 48, the signal receiver, and the semiconductor refrigeration sheet 43 are respectively communicatively connected to the single-chip microcomputer through data electrical signals. The signal receiver and the transmitter 16 can select an HC-05 Bluetooth module. When the coolant enters the emergency inner pipe 35 and flows through the heat dissipation pipe 38, the semiconductor refrigeration sheet 43 cools the mesh heat conduction sheet 39, so that the heat of the coolant flowing through the mesh heat conduction sheet 39 and the heat dissipation holes 40 is absorbed by the mesh heat conduction sheet 39. The motor 48 drives the blades forty-five to rotate, and takes away the heat on the semiconductor refrigeration sheet 43 and the mesh heat conduction sheet 39.

[0045] Working principle: During use, the coolant enters the guide channel 3 from the inlet pipe 4 and flows out from the outlet pipe 5. When the coolant flows through the protective shell 9 at the outlet pipe 5, it contacts the mercury tube 12 through the flow channel 11. As the coolant temperature rises, it heats the mercury tube 12, causing the mercury in the mercury tube 12 to rise and enter the thin tube 10. When the mercury contacts electrode 13, the battery 15 and the transmitter 16 are connected. The transmitter 16 sends a signal, and the signal receiver receives the signal. The telescopic rod 32 drives the power rod 28 to move, causing the movable tube 21 to move to fit against the stopper plate 30. This moves the opening at the connection between the steering tube 27 and the base tube 20 out from between piston 1 22 and piston 2 23. At the same time, the conical plug 34 is inserted into the through hole 18, allowing the coolant to enter the steering tube 27 while preventing the coolant from passing through the movable tube 21 and the through hole 18. Coolant enters the emergency inner tube 35 and flows through the heat dissipation tube 38. The semiconductor cooling chip 43 cools the mesh heat-conducting plate 39, so that the heat of the coolant flowing through the mesh heat-conducting plate 39 and the heat dissipation hole 40 is absorbed by the mesh heat-conducting plate 39. The motor 48 drives the blade 45 to rotate, carrying away the heat on the semiconductor cooling chip 43 and the mesh heat-conducting plate 39. However, the temperature of the coolant drops to the point that the mercury and electrode 13 separate, causing the transmitter 16 to lose power. The signal receiver cannot receive the signal, and the telescopic rod 32 drives the power rod 28 to move in the opposite direction, causing the movable tube 21 to move to the point of separation from the stop plate 30. The opening at the connection between the steering tube 27 and the base tube 20 is moved back between piston 1 22 and piston 2 23. At the same time, the conical plug 34 leaves the through hole 18, preventing the coolant from entering the steering tube 27 while allowing the coolant to pass through the movable tube 21 and the through hole 18.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle motor controller heat dissipation structure, characterized in that, The utility model provides a kind of installation box, including: The back of the installation box is provided with a heat dissipation groove, a flow guide channel is arranged in the heat dissipation groove, a water inlet pipe and a water outlet pipe are arranged on the wall of the heat dissipation groove, a sealing cover is arranged in the heat dissipation groove, an emergency groove and a trigger groove are opened on the sealing cover; A trigger assembly is arranged at the trigger groove, the trigger assembly includes a protective shell inserted on the wall of the trigger groove, a thin tube arranged in the protective shell, a through-flow groove opened on the protective shell, a mercury tube arranged in the through-flow groove and communicating with the thin tube, an electrode I arranged on the thin tube, an electrode II arranged in the mercury tube, a battery arranged on the bottom wall of the protective shell and connected with the electrode I and electrode II, a transmitter arranged on the bottom wall of the protective shell and connected with the battery; An emergency assembly includes a starting mechanism arranged in the water inlet pipe and a cooling mechanism arranged on the side wall of the heat dissipation groove, cooling liquid flows out from the water outlet pipe after entering the flow guide channel from the water inlet pipe, when the cooling liquid flows through the protective shell at the water outlet pipe, the cooling liquid contacts the mercury tube through the through-flow groove, when the temperature of the cooling liquid rises, the mercury tube is heated, causing the mercury in the mercury tube to rise into the thin tube, when the mercury contacts the electrode I, the battery and the transmitter are connected, the transmitter sends a signal, causing the starting mechanism to block the flow guide channel and guide the cooling liquid into the cooling mechanism to cool down before sending it back to the flow guide channel, until the temperature of the cooling liquid decreases when it flows through the mercury tube, causing the mercury to fall in the thin tube, causing the mercury and the electrode I to separate, causing the transmitter to be powered off, and the starting mechanism reopens the flow guide channel.

2. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 1, characterized in that: A limiting plate is arranged at the middle section of the flow guide channel, a through hole is opened on the limiting plate, and a partition plate is arranged at the emergency groove.

3. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 2, characterized in that: When the sealing cover is inserted into the heat dissipation groove, the partition plate fits the limiting plate.

4. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 2, characterized in that: The starting mechanism includes a communication member arranged on the partition plate and a reversing member arranged on the communication member, the communication member includes a base pipe inserted on the partition plate, a movable pipe arranged in the base pipe, a piston I and a piston II arranged on the movable pipe, a fixed rod arranged on the base pipe, a limiting through pipe arranged on the fixed rod, a displacement slot opened on the limiting through pipe, and a turning pipe arranged on the base pipe.

5. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 4, characterized in that: The reversing member includes a power rod arranged in the limiting through pipe, a connecting pipe arranged on the power rod and connected with the movable pipe through the displacement slot, a plug plate arranged on the limiting through pipe, a bracket arranged on the bottom wall of the installation box, an extension rod arranged on the bracket and connected with one end of the power rod through the wall of the heat dissipation groove, an L-shaped rod arranged on the other end of the power rod, and a tapered plug arranged on the L-shaped rod.

6. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 5, characterized in that: When the mercury contacts the electrode one, the battery and the transmitter are in communication, the telescopic rod drives the power rod to move, the movable tube is moved to be attached to the plug plate, the opening at the joint of the diversion tube and the base tube is moved out of the piston one and the piston two, at the same time, the tapered plug is inserted into the through hole, the cooling liquid enters the diversion tube while being prevented from passing through the movable tube and the through hole, when the mercury is separated from the electrode one, the telescopic rod drives the power rod to move reversely, the movable tube is moved to be separated from the plug plate, the opening at the joint of the diversion tube and the base tube is moved back to the piston one and the piston two, at the same time, the tapered plug is separated from the through hole, the cooling liquid is prevented from entering the diversion tube while being allowed to pass through the movable tube and the through hole.

7. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 5, characterized in that: The cooling mechanism comprises an emergency tube arranged on the heat dissipation groove wall, a cooling member arranged on the emergency tube and a ventilation member, the emergency tube comprises an emergency inner tube with one end communicated with the diversion tube and the other end communicated with the heat dissipation groove, a temperature insulation tube arranged on the outer wall of the emergency inner tube, and a one-way valve arranged on the emergency inner tube.

8. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 7, characterized in that: The cooling member comprises a heat dissipation tube arranged on the emergency inner tube, a mesh heat conduction sheet inserted on the heat dissipation tube and penetrating through the heat dissipation tube, a heat dissipation hole opened on the mesh heat conduction sheet and located in the heat dissipation tube, a dustproof plate arranged on the heat dissipation tube, an outer cover tube arranged on the dustproof plate, and a semiconductor refrigeration sheet arranged on the mesh heat conduction sheet.

9. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 8, characterized in that: The ventilation member comprises a rotating ring arranged on the heat dissipation tube, a vane and a gear one arranged on the rotating ring, a gear two engaged with the gear one, and a motor arranged on the mounting box and connected with the gear two.

10. The heat dissipation structure of the motor controller of the new energy vehicle according to claim 9, characterized in that: When the cooling liquid enters the emergency inner tube and flows through the heat dissipation tube, the semiconductor refrigeration sheet cools the mesh heat conduction sheet, the heat of the cooling liquid flowing through the mesh heat conduction sheet and the heat dissipation hole is absorbed by the mesh heat conduction sheet, and the motor drives the vane to rotate, so as to take away the heat on the semiconductor refrigeration sheet and the mesh heat conduction sheet.

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