New energy automobile motor controller

Abstract

The utility model belongs to the field of new energy automobiles, and particularly relates to a new energy automobile motor controller. According to the technology, a bottom plate is included, a controller body is installed at the top of the bottom plate, the controller body is sleeved with an installation block of an n-shaped structure, an installation groove is formed in the inner top of the installation block, a fan is installed at the bottom of the installation groove, a liquid cooling pipe is installed on the inner side wall of the installation groove, and the two ends of the liquid cooling pipe penetrate out of the installation block; the controller further comprises a water tank and a water pump, the water inlet end of the water pump is communicated with the interior of the water tank through a connecting pipe, the water outlet end of the water pump is communicated with one end of the liquid cooling pipe through a water guide pipe, and the other end of the liquid cooling pipe is communicated with the interior of the water tank. A processor used for receiving signals of the thermodetector and controlling starting and stopping of the fan and the water pump is installed on the installation block. According to the utility model, a proper cooling mode can be automatically selected according to the temperature or the heating efficiency of the controller body.

Description

Technical Field

[0001] The utility model belongs to the field of new energy vehicles, and in particular relates to a motor controller for a new energy vehicle. Background Art

[0002] The application of new energy vehicle technology is conducive to solving environmental and energy problems. Electric vehicles are the main form of new energy vehicles, and motor control in electric vehicles is one of the key technologies. Thermal safety in motor control, that is, excessive operating temperature will greatly reduce its performance and cause safety problems for the entire controller, is one of its difficulties; at present, the motor controllers of domestic new energy vehicles mainly use forced air cooling and liquid cooling. Among them, forced air cooling is more common, but compared with liquid cooling, air cooling has limited heat dissipation efficiency and a shorter service life of the fan. Long-term use of liquid cooling will reduce the endurance of new energy vehicles (with multiple continuous power consumption units such as water pumps and radiators). Therefore, a controller that can freely adjust the heat dissipation mode according to temperature is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a new energy vehicle motor controller, which can freely select a suitable heat dissipation method according to the temperature of the controller body.

[0004] The new energy vehicle motor controller comprises a bottom plate, a controller body is mounted on the top of the bottom plate, an "N"-shaped mounting block is sleeved on the controller body, a mounting groove is provided on the inner top of the mounting block, a fan for blowing air downward is installed at the bottom of the mounting groove, a liquid cooling pipe for liquid cooling the controller body is installed on the inner side wall of the mounting groove, and both ends of the liquid cooling pipe pass through the mounting block;

[0005] It also includes a water tank and a water pump. The water inlet end of the water pump is connected to the inside of the water tank through a connecting pipe, and the water outlet end of the water pump is connected to one end of the liquid cooling pipe through a water pipe. The other end of the liquid cooling pipe is connected to the inside of the water tank. A thermometer for detecting the temperature of the controller body is installed in the installation groove, and a processor for receiving the thermometer signal and controlling the opening and closing of the fan and the water pump is installed on the installation block.

[0006] Furthermore, the top of the mounting block is provided with ventilation holes for air to flow into the mounting groove, the left and right walls of the lower end of the mounting block are also provided with a number of ventilation holes, and the left inner wall and the right inner wall of the lower end of the mounting block are both provided with a number of ventilation grooves for hot air to be discharged from the corresponding ventilation holes.

[0007] Furthermore, a plurality of protruding blocks are integrally fixed on the side wall of the mounting groove of the mounting block, and the liquid cooling tube is fixed on the bottom of the protruding block and is attached to the top of the controller body.

[0008] Furthermore, the liquid cooling tube is in the shape of a spiral coil.

[0009] Furthermore, the water pipe is provided with a clamping plate, on which a semiconductor refrigeration plate is installed for reducing the temperature in the water pipe.

[0010] Furthermore, the water conduit has a continuous "S"-shaped structure.

[0011] Furthermore, a dust cover is fixed on the top of the mounting block to prevent a large amount of dust from entering the mounting block. Furthermore, a connecting block is fixed on the left and right walls of the lower end of the mounting block, and the connecting block is fixed to the top of the bottom plate by bolts.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model has two cooling methods, air cooling and liquid cooling, and three cooling modes through the fan and the liquid cooling tube. In conjunction with the temperature meter and the processor, the device can automatically select and start the appropriate cooling method according to the temperature of the controller body or the heating efficiency. It can avoid the influence of low cooling efficiency of air cooling and easy damage of the fan, and can also avoid the influence of long-term use of liquid cooling on reducing the endurance of new energy vehicles, so as to ensure the safety of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0016] Figure 3 It is a structural schematic diagram of a liquid cooling tube;

[0017] Figure 4 for Figure 1 Front view of

[0018] The names of the components in the figure are: 1. base plate 2. connecting block 3. controller body 4. processor 5. mounting block 6. fan 7. dust cover 8. thermometer 9. liquid cooling pipe 10. ventilation hole 11. water tank 12. connecting pipe 13. water pump 14. splint 15. semiconductor cooling sheet 16. water guide pipe. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0020] Example 1

[0021] The motor controller of a new energy vehicle described in this embodiment includes a base plate 1, a controller body 3 is installed on the top of the base plate 1, and an "n"-shaped mounting block 5 is mounted on the controller body 3. Figure 1 and Figure 4 As shown, the upper end of the mounting block 5 has a certain thickness (the distance from the inner top to the top), the top of the controller body 3 contacts the inner top of the mounting block 5, and the left and right walls of the lower end of the mounting block 5 are fixed with connecting blocks 2, which are fixed to the top of the base plate 1 by bolts, as shown in FIG. Figure 2 As shown;

[0022] The inner top of the mounting block 5 is provided with a mounting groove, and a fan 6 for blowing air downward is installed at the bottom of the mounting groove. The fan 6 blows air to the controller body 3 to achieve the effect of air cooling, thereby effectively cooling the controller body 3 when the heating temperature and heating efficiency are low; Figure 1 and Figure 2 As shown, the top of the mounting block 5 is provided with ventilation holes 10 for air to flow into the mounting groove, the left side wall and the right side wall of the lower end of the mounting block 5 are also provided with a plurality of ventilation holes 10, and the left inner wall and the right inner wall of the lower end of the mounting block 5 are both provided with a plurality of ventilation slots for hot air to be discharged from the corresponding ventilation holes 10, so that the wind blown by the fan 6 to the controller body 3 fully contacts the controller body 3 and takes away a part of the heat, and then is discharged from the ventilation holes 10 at the lower end of the mounting block 5, wherein the ventilation slots and the ventilation holes 10 provided at the lower end of the mounting block 5 are as shown in FIG. Figure 2 As shown, there are several ventilation slots on both sides, and the ventilation slots on the same side are distributed front to back, and each ventilation slot corresponds to a plurality of ventilation holes 10;

[0023] A liquid cooling pipe 9 for liquid cooling the controller body 3 is installed on the inner wall of the installation groove. Both ends of the liquid cooling pipe 9 pass through the installation block 5. Liquid with high heat absorption efficiency is poured into the liquid cooling pipe 9 to directly absorb the heat generated by the controller body 3, thereby achieving the effect of liquid cooling. The controller body 3 is effectively cooled when the heating temperature and heating efficiency are high, thereby avoiding the influence of low air cooling efficiency and easy damage of the fan 6, and avoiding the influence of long-term use of liquid cooling on reducing the endurance of new energy vehicles; Figure 1 and Figure 3 As shown, a plurality of protrusions are integrally fixed on the side wall of the mounting groove of the mounting block 5, and the liquid cooling tube 9 is fixed at the bottom of the protrusion and is attached to the top of the controller body 3, wherein the liquid cooling tube 9 is in a spiral coil shape, thereby greatly increasing the contact area between the liquid cooling tube 9 and the controller body 3, making the cooling efficiency of the liquid cooling tube 9 higher, so as to ensure the driving safety of the new energy vehicle;

[0024] It also includes a water tank 11 and a water pump 13. The water inlet end of the water pump 13 is connected to the inside of the water tank 11 through a connecting pipe 12, and the water outlet end of the water pump 13 is connected to one end of the liquid cooling pipe 9 through a water pipe 16. The other end of the liquid cooling pipe 9 is connected to the inside of the water tank 11. The coolant is stored through the water tank 11, and the water pump 13 sucks the coolant in the water tank 11, and then cooperates with the connecting pipe 12 and the water pipe 16 to realize the recycling of the coolant; a thermometer 8 for detecting the temperature of the controller body 3 is installed in the installation groove, and a device for receiving the thermometer 8 signal and controlling the fan is installed on the installation block 5. 6 and the processor 4 for opening and closing the water pump 13. Through the thermometer 8 and the processor 4, the device can automatically select and start a suitable cooling method according to the temperature of the controller body 3 or the heating efficiency (compared with the set value in the processor 4), thereby improving the degree of intelligence; the thermometer 8, the fan 6 and the water pump 13 are all electrically connected to the processor 4 through wires, wherein the thermometer 8 can select a non-contact thermometer with the controller body 3, such as an infrared thermometer, etc. The processor 4 adopts a conventional small controller. In practice, the processor 4 is also connected to the vehicle system of the new energy vehicle for communication or electrically connected through wires. When this embodiment is in use, first, when the thermometer 8 detects that the controller body 3 is in a state of low temperature or heating efficiency, the processor 4 will start the fan 6 to blow air to the controller body 3, thereby cooling the controller body 3 by air cooling. When the thermometer 8 detects that the controller body 3 is in a state of high temperature or heating efficiency, the processor 4 will turn off the fan 6 to make the fan 6 pause and start the water pump 13 to draw the coolant into the liquid cooling pipe 9 to directly circulate and absorb the heat generated by the controller body 3, thereby cooling the controller body 3 by liquid cooling. Further, when the thermometer 8 detects that the controller body 3 is still in a state of high temperature or heating efficiency, the processor 4 will start the fan 6 again, thereby further improving the cooling efficiency of the controller body 3 by combining air cooling and liquid cooling.

[0025] Example 2

[0026] This embodiment further illustrates the technology. The water pipe 16 is provided with a clamping plate 14, and a semiconductor refrigeration plate 15 is installed on the clamping plate 14 for reducing the temperature in the water pipe 16. The semiconductor refrigeration plate 15 cools the coolant in the water pipe 16, thereby further improving the cooling efficiency of the controller body 3 to ensure the safety of the new energy vehicle. Figure 1As shown, the water pipe 16 is in a continuous "S"-shaped structure, so that the water pipe 16 has a higher heat exchange efficiency. The clamping plate 14 is a rectangular frame structure, and a mounting hole communicating with the inside and outside is opened on the front side. The semiconductor refrigeration plate 15 is installed in the mounting hole, wherein the semiconductor refrigeration plate 15 is a prior art, and its principle is to utilize the Peltier effect of semiconductor materials. When direct current passes through a thermocouple formed by two different semiconductor materials in series, heat can be absorbed and released at both ends of the thermocouple respectively, thereby achieving refrigeration. In practice, in this embodiment, the cold end of the semiconductor refrigeration plate 15 is in contact with the water pipe 16 through a cold plate, and the hot end of the semiconductor refrigeration plate 15 is equipped with an electric fan for heat dissipation.

[0027] Example 3

[0028] This embodiment further illustrates the technology. A dust cover 7 is fixed on the top of the mounting block 5 to prevent a large amount of dust from entering the mounting block 5. Figure 1 and Figure 4 As shown, most of the dust is isolated by the dust cover 7, thereby reducing the dust accumulation in the mounting block 5.

Claims

1. A new energy vehicle motor controller, comprising a base plate (1), a controller body (3) being mounted on the top of the base plate (1), characterized in that: The controller body (3) is sleeved with an "N"-shaped mounting block (5), the inner top of the mounting block (5) is provided with a mounting groove, the bottom of the mounting groove is provided with a fan (6) for blowing air downwards, and the inner side wall of the mounting groove is provided with a liquid cooling pipe (9) for liquid cooling the controller body (3), and both ends of the liquid cooling pipe (9) pass through the mounting block (5); The controller also includes a water tank (11) and a water pump (13). The water inlet of the water pump (13) is connected to the inside of the water tank (11) through a connecting pipe (12). The water outlet of the water pump (13) is connected to one end of a liquid cooling pipe (9) through a water guide pipe (16). The other end of the liquid cooling pipe (9) is connected to the inside of the water tank (11). A thermometer (8) for detecting the temperature of the controller body (3) is installed in the installation groove. A processor (4) for receiving a signal from the thermometer (8) and controlling the start and stop of a fan (6) and a water pump (13) is installed on the installation block (5).

2. The new energy vehicle motor controller according to claim 1 is characterized in that: The top of the mounting block (5) is provided with a ventilation hole (10) for air to flow into the mounting groove, the left side wall and the right side wall of the lower end of the mounting block (5) are also provided with a plurality of ventilation holes (10), and the left inner side wall and the right inner side wall of the lower end of the mounting block (5) are both provided with a plurality of ventilation slots for hot air to be discharged from the corresponding ventilation holes (10).

3. The new energy vehicle motor controller according to claim 2 is characterized in that: A plurality of protruding blocks are integrally fixed on the side wall of the installation groove of the installation block (5), and the liquid cooling pipe (9) is fixed on the bottom of the protruding block and abuts against the top of the controller body (3).

4. The new energy vehicle motor controller according to claim 1 or 3, characterized in that: The liquid cooling tube (9) is in the shape of a spiral coil.

5. The new energy vehicle motor controller according to claim 2, characterized in that: The water conduit (16) is sleeved with a clamping plate (14), and a semiconductor refrigeration plate (15) for reducing the temperature in the water conduit (16) is installed on the clamping plate (14).

6. The new energy vehicle motor controller according to claim 5, characterized in that: The water conduit (16) is in a continuous "S"-shaped structure.

7. The new energy vehicle motor controller according to claim 2, characterized in that: A dust cover (7) is fixed on the top of the mounting block (5) to prevent a large amount of dust from entering the mounting block (5).

8. The new energy vehicle motor controller according to claim 1, characterized in that: The left and right side walls at the lower end of the mounting block (5) are both fixed with connection blocks (2), and the connection blocks (2) are fixed to the top of the base plate (1) by bolts.

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