New energy automobile high-low voltage electric appliance convenient to install

Abstract

The utility model relates to the technical field of automobile electric appliances, and discloses a new energy automobile high-low voltage electric appliance convenient to install, which comprises a heat conducting plate, a motor controller is installed at the top of the heat conducting plate, a support is arranged at the bottom of the heat conducting plate, positioning rods are fixedly connected to four corners of the top of the support, and positioning holes are formed in the positioning rods. Mounting holes are formed in the four corners in the heat conducting plate, connecting assemblies are installed on the two sides in the heat conducting plate, a cavity is formed in the middle of the heat conducting plate, two connecting openings are formed in the outer side of the heat conducting plate, a plurality of cooling fins are fixedly connected to the middle side of the bottom of the heat conducting plate, and two valve cavities are formed in one side in the heat conducting plate. According to the utility model, when the heat dissipated by the high-voltage and low-voltage electrical appliances of the new energy automobile reaches a certain degree, the high-voltage and low-voltage electrical appliances of the new energy automobile can be automatically switched to a liquid cooling heat dissipation mode, and can be switched to a natural heat dissipation mode again after the temperature is reduced, so that the heat dissipation effect is improved, and more energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile electrical appliances, and in particular to a high and low voltage electrical appliance for a new energy automobile which is easy to install. Background Art

[0002] The high and low voltage electrical appliances of new energy vehicles are key components of modern automotive electrical systems. With the development of electric vehicles and hybrid vehicles, these appliances play an extremely important role in vehicle power systems, charging systems and auxiliary systems. Electric vehicles use electric motors to drive the vehicle, and the motor controller (inverter) is a type of high and low voltage electrical appliance.

[0003] At present, most of the high and low voltage electrical appliances of new energy vehicles will generate heat when in use. Among them, the operating power of the motor controller is relatively high, and it will generate a lot of heat when running. Traditional motor controllers mostly use natural heat dissipation to dissipate heat. In hot weather, the natural heat dissipation method cannot quickly dissipate the heat. Therefore, a high and low voltage electrical appliance for new energy vehicles that is easy to install is proposed. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a high and low voltage electrical appliance for a new energy vehicle that is easy to install, aiming to improve the problem that the heat dissipation efficiency of the high and low voltage electrical appliances in the prior art is not high enough.

[0005] In order to achieve the above-mentioned objectives, the utility model adopts the following technical solutions: a high and low voltage electrical appliance for new energy vehicles that is easy to install, comprising a heat conducting plate, a motor controller is installed on the top of the heat conducting plate, a bracket is arranged at the bottom of the heat conducting plate, positioning rods are fixedly connected to the four corners of the top of the bracket, positioning holes are opened inside the positioning rods, mounting holes are opened at the four corners inside the heat conducting plate, connecting components are installed on both sides of the heat conducting plate, a cavity is opened in the middle of the heat conducting plate, two connecting ports are installed on the outside of the heat conducting plate, a plurality of cooling fins are fixedly connected to the middle side of the bottom of the heat conducting plate, two valve cavities are opened on one side of the heat conducting plate, a spring is arranged on one side of the valve cavity, paraffin is arranged on the other side of the valve cavity, a valve core is slidably connected to the middle of the valve cavity, a piston is fixedly connected to the side of the valve core close to the paraffin, and a liquid inlet hole is opened inside the valve core.

[0006] As a further description of the above technical solution:

[0007] The connecting assembly includes four sliders and two hand wheels. The sliders are slidably connected to the inner edge of the heat conducting plate. A plug rod is fixedly connected to one side of the slider, and a compression spring is arranged on the other side of the slider. The outer periphery of the hand wheel is rotatably connected to the inside of the heat conducting plate on one side close to the cavity, and a pull rope is fixedly connected between the hand wheel and the slider.

[0008] As a further description of the above technical solution:

[0009] The valve cavity is communicated with the interior of the connecting port, and the connecting port is communicated with the interior of the cavity.

[0010] As a further description of the above technical solution:

[0011] One end of the spring is fixedly connected to the middle of the piston, the other end of the spring is fixedly connected to the inner wall of the valve cavity, and the outer periphery of the piston is slidably connected to the inside of the valve cavity.

[0012] As a further description of the above technical solution:

[0013] Receiving grooves are provided on both sides of the middle of the heat conducting plate, and the side of the hand wheel close to the cavity is arranged inside the receiving groove.

[0014] As a further description of the above technical solution:

[0015] The positioning rod is slidably connected to the inside of the mounting hole, and the insertion rod passes through the heat conducting plate and is inserted into the inside of the positioning hole.

[0016] As a further description of the above technical solution:

[0017] One end of the compression spring is fixedly connected to the middle of the sliding block, and the other end of the compression spring is fixedly connected to the inner wall of the heat conducting plate.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, through the coordination of the cavity, the connection port, the heat dissipation fins, the valve cavity, the spring, the paraffin, the valve core, the piston, and the liquid inlet hole, the high and low voltage electrical appliances of the new energy vehicle can automatically switch to the liquid cooling mode when the heat emitted by themselves reaches a certain level, and switch back to the natural heat dissipation mode after the temperature drops, thereby improving the heat dissipation effect and being more energy-saving.

[0020] 2. In the utility model, through the coordination of the bracket, positioning rod, positioning hole, slider, plug rod, compression spring, storage groove, hand wheel and pull rope, the high and low voltage electrical appliances of new energy vehicles can be quickly installed and disassembled during maintenance and replacement, providing convenience for subsequent replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of a high and low voltage electrical appliance for a new energy vehicle that is easy to install, as proposed by the utility model;

[0022] Figure 2This is a schematic diagram of a positioning rod structure of a high and low voltage electrical appliance for a new energy vehicle that is easy to install, proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of a heat conduction plate of high and low voltage electrical appliances for new energy vehicles that is easy to install, as proposed by the utility model.

[0024] Legend:

[0025] 1. Heat conducting plate; 2. Motor controller; 3. Bracket; 4. Positioning rod; 5. Positioning hole; 6. Mounting hole; 7. Cavity; 8. Connecting port; 9. Cooling fin; 10. Valve cavity; 11. Spring; 12. Paraffin; 13. Valve core; 14. Piston; 15. Liquid inlet hole; 16. Slider; 17. Insert rod; 18. Compression spring; 19. Storage slot; 20. Hand wheel; 21. Pull rope. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings of the utility model specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-2 The utility model provides an embodiment: a high and low voltage electrical appliance for a new energy vehicle that is easy to install, comprising a heat conducting plate 1, a motor controller 2 is installed on the top of the heat conducting plate 1, the motor controller 2 is a motor controller, and the heat conducting plate 1 is the installation floor of the motor controller 2. By connecting the heat conducting plate 1 and the motor controller 2, the temperature generated by the operation of the internal components of the motor controller 2 can be directly absorbed by the heat conducting plate 1. A bracket 3 is provided at the bottom of the heat conducting plate 1, and the bracket 3 is fixed on the frame of the new energy vehicle by welding, and is used to install high and low voltage electrical appliances to ensure its stability. The four corners of the top of the bracket 3 are fixedly connected with a positioning rod 4, and a positioning hole 5 is opened inside the positioning rod 4. The four corners of the heat conducting plate 1 are opened with a mounting hole 6, and the inside of the heat conducting plate 1 is installed with a connecting assembly on both sides. By inserting the positioning rod 4 into the mounting hole 6, and then locking the positioning rod 4 into the mounting hole 6 through the cooperation between the connecting assembly and the positioning hole 5, the high and low voltage electrical appliances can be conveniently installed.

[0028] Reference Figure 2-3, a cavity 7 is provided in the middle of the heat conducting plate 1, two connection ports 8 are installed on the outside of the heat conducting plate 1, and a plurality of heat dissipation fins 9 are fixedly connected to the middle side of the bottom of the heat conducting plate 1. Under normal working conditions, the heat generated by the motor controller 2 will be absorbed by the heat conducting plate 1 and transferred to the heat dissipation fins 9, and then the heat dissipation fins 9 will dissipate the heat to the outside to achieve a natural cooling effect. Two valve cavities 10 are provided on one side of the interior of the heat conducting plate 1, a spring 11 is provided on one side of the interior of the valve cavity 10, and paraffin 12 is provided on the other side of the interior of the valve cavity 10. The material properties of the paraffin 12 can make it change from solid to liquid when the temperature reaches about 45°C, and its volume will increase when it melts into a liquid state. Similarly, when the temperature is lower than the melting point, the paraffin 12 will change from liquid to solid again, and the volume will decrease in the process.

[0029] Reference Figure 3 , a valve core 13 is slidably connected to the middle of the valve cavity 10, a piston 14 is fixedly connected to the side of the valve core 13 close to the paraffin 12, and a liquid inlet hole 15 is opened inside the valve core 13. When the temperature of the heat conducting plate 1 reaches 45°C, the heat conducting plate 1 will melt the paraffin 12 inside the valve cavity 10, so that the paraffin 12 will push the piston 14 to move, so that the piston 14 pushes the valve core 13 to move and compress the spring 11, and at this time the movement of the valve core 13 will gradually connect the liquid inlet hole 15 and the inside of the connecting port 8. The coolant inside one of the connecting ports 8 will pass through the connecting port 8 and the liquid inlet hole 15 into the cavity 7, and then take away the heat absorbed by the heat conducting plate 1, and then the coolant will flow out from the connecting port 8 on the other side with the heat, and flow back to the liquid cooling circulation system of the car, thereby quickly dissipating the high temperature generated when the motor controller 2 is working. When the temperature drops, the paraffin 12 will solidify again and its volume will decrease. Under the action of the pressure difference and the spring 11, the valve core 13 will reset to offset the liquid inlet 15 and the connection port 8, and then reclose the channel inside the connection port 8, and heat will be dissipated through the heat dissipation fins 9 instead. Automatic switching from natural cooling to liquid cooling, or from liquid cooling to natural cooling is achieved.

[0030] Reference Figure 3, the valve cavity 10 is connected to the inside of the connection port 8, so that the coolant inside the connection port 8 will gather inside the connection port 8, and the connection port 8 is connected to the liquid cooling circulation system through a pipeline, and the liquid cooling circulation system of the car assists the electrical appliances to dissipate heat. The connection port 8 is connected to the inside of the cavity 7. When the liquid inlet hole 15 inside the valve core 13 is connected to the inside of the connection port 8, the coolant will enter the cavity 7 to absorb the heat of the heat conducting plate 1. One end of the spring 11 is fixedly connected to the middle of the piston 14, and the other end of the spring 11 is fixedly connected to the inner wall of the valve cavity 10. When the paraffin 12 solidifies and closes the channel inside the connection port 8, the spring 11 can push the valve core 13 to reset and close the inside of the connection port 8 by means of the pressure difference generated by the volume difference and the thrust of the spring 11. The outer periphery of the piston 14 is slidably connected to the inside of the valve cavity 10, and the piston 14 can prevent the paraffin 12 in the liquid state from leaking.

[0031] Reference Figure 2-3 The connection assembly includes four sliders 16 and two hand wheels 20. The slider 16 is slidably connected to the inner edge of the heat conducting plate 1. A plug rod 17 is fixedly connected to one side of the slider 16. A compression spring 18 is arranged on the other side of the slider 16. The outer periphery of the hand wheel 20 is rotatably connected to the inner side of the heat conducting plate 1 near the cavity 7. A pull rope 21 is fixedly connected between the hand wheel 20 and the slider 16. The hand wheel 20 is turned to wind the pull rope 21 around its outer periphery, so that the pull rope 21 will synchronously pull the corresponding slider 16 to move. Then, the slider 16 is pulled by the pull rope 21 to compress the compression spring 18, and at the same time, the plug rod 17 is driven to disengage from the inside of the positioning hole 5. At this time, the locking state between the positioning rod 4 and the mounting hole 6 is released. And after the hand wheel 20 is released, the thrust generated by the reset of the compression spring 18 is used to push the slider 16 to reset, and then the pull rope 21 wound around the outer periphery of the hand wheel 20 is released again. Receiving grooves 19 are provided on both sides of the middle of the heat conducting plate 1. A hand wheel 20 is arranged inside the receiving groove 19 near the side of the cavity 7. The hand wheel 20 can realize the synchronous pulling of the four sliders 16 at the four corners, and then the insertion rod 17 can be conveniently pulled out from the inside of the positioning hole 5 to disassemble or install the high and low voltage electrical appliances. The positioning rod 4 is slidably connected inside the mounting hole 6. The insertion rod 17 passes through the heat conducting plate 1 and is inserted into the inside of the positioning hole 5. Through the cooperation of the insertion rod 17 and the positioning hole 5, the positioning rod 4 can be restricted inside the mounting hole 6 to prevent the positioning rod 4 from being separated from the inside of the mounting hole 6, thereby preventing the motor controller 2 and the heat conducting plate 1 from falling off. One end of the compression spring 18 is fixedly connected to the middle of the slider 16, and the other end of the compression spring 18 is fixedly connected to the inner wall of the heat conducting plate 1. The slider 16 is tightly pressed by the compression spring 18 to ensure that the slider 16 presses the insertion rod 17 tightly against the inside of the positioning hole 5 to prevent the mounting hole 6 and the positioning rod 4 from loosening.

[0032] Working principle: Under normal circumstances, the temperature generated by the operation of the motor controller 2 will be absorbed by the heat conducting plate 1 and quickly dissipated through the heat dissipation fins 9. When the temperature is too high or the motor controller 2 is in operation, the heat dissipation fins 9 cannot quickly dissipate the temperature absorbed by the heat conducting plate 1, causing the temperature of the heat conducting plate 1 to continue to rise. When the temperature of the heat conducting plate 1 reaches 45°C, the heat conducting plate 1 will melt the paraffin 12 inside the valve cavity 10. Due to the characteristics of the paraffin 12 itself, the volume of the paraffin 12 that has turned into a liquid state will increase, and then the paraffin 12 will push the piston 14 to move, so that the piston 14 pushes the valve core 13 to move and compress the spring 11. At this time, the movement of the valve core 13 will gradually connect the liquid inlet hole 15 and the inside of the connection port 8. The coolant inside one of the connection ports 8 will pass through the connection port 8 and the liquid inlet hole 15 into the cavity 7, and then take away the heat absorbed by the heat conducting plate 1. Then the coolant will flow out of the connection port 8 on the other side with the heat and flow back to the liquid cooling circulation system of the car. When the operating temperature of the motor controller 2 gradually decreases, the heat absorbed by the heat conducting plate 1 decreases and the temperature decreases. The paraffin 12 will solidify into a solid state again, and its volume will decrease. At this time, there is a pressure difference on both sides of the piston 14, and with the cooperation of the spring 11, the valve core 13 is pushed back toward the direction of the paraffin 12, so that the liquid inlet hole 15 gradually separates from the interior of the connecting port 8, so that the valve core 13 closes the interior of the connecting port 8. The coolant in the liquid cooling circulation system will not enter the cavity 7. At this time, the heat of the high and low voltage electrical appliances is only dissipated through the heat dissipation fins 9.

[0033] When the damaged motor controller 2 needs to be replaced or maintained, the hand wheel 20 only needs to be turned to wind the pull rope 21 around its periphery, so that the pull rope 21 will synchronously pull the corresponding slider 16 to move. Then the slider 16 is pulled by the pull rope 21 to compress the compression spring 18, and at the same time, the insertion rod 17 is driven to disengage from the interior of the positioning hole 5, and the locking state between the positioning rod 4 and the mounting hole 6 is released. After that, the heat conducting plate 1 can be removed from the bracket 3, and then the high and low voltage electrical appliances can be conveniently and quickly disassembled. Reinstall the repaired or new electrical appliance on the bracket 3, and at the same time, turn the hand wheel 20 again to retract the insertion rod 17 into the inside of the heat conducting plate 1 by pulling the pull rope 21, and then completely insert the positioning rod 4 into the mounting hole 6. At this time, the bottom of the heat conducting plate 1 is in contact with the top of the bracket 3, and the hand wheel 20 is released. The compressed compression spring 18 is reset to push the slider 16 to move, so that the slider 16 moves to push the insertion rod 17 to be inserted into the positioning hole 5 inside the positioning rod 4 again, and the positioning rod 4 and the mounting hole 6 are locked and fixed to complete the installation of the high and low voltage electrical appliances.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high and low voltage electrical appliance for a new energy vehicle that is easy to install, comprising a heat conducting plate (1), characterized in that: A motor controller (2) is installed on the top of the heat conducting plate (1), a bracket (3) is arranged at the bottom of the heat conducting plate (1), positioning rods (4) are fixedly connected to the four corners of the top of the bracket (3), positioning holes (5) are provided inside the positioning rods (4), mounting holes (6) are provided at the four corners inside the heat conducting plate (1), connecting components are installed on both sides of the heat conducting plate (1), a cavity (7) is provided in the middle of the heat conducting plate (1), and two connecting ports (8) are installed on the outside of the heat conducting plate (1). A plurality of heat dissipation fins (9) are fixedly connected to the middle side of the bottom of the heat conducting plate (1); two valve chambers (10) are provided on one side of the interior of the heat conducting plate (1); a spring (11) is provided on one side of the interior of the valve chamber (10); paraffin (12) is provided on the other side of the interior of the valve chamber (10); a valve core (13) is slidably connected to the middle of the valve chamber (10); a piston (14) is fixedly connected to the side of the valve core (13) close to the paraffin (12); and a liquid inlet hole (15) is provided inside the valve core (13).

2. According to claim 1, a high and low voltage electrical apparatus for new energy vehicles that is easy to install, characterized in that: The connection assembly comprises four sliders (16) and two hand wheels (20), wherein the sliders (16) are slidably connected to the inner edge of the heat conducting plate (1), one side of the slider (16) is fixedly connected to an insertion rod (17), and the other side of the slider (16) is provided with a compression spring (18), and the outer periphery of the hand wheel (20) is rotatably connected to the inside of the heat conducting plate (1) on a side close to the cavity (7), and a pull rope (21) is fixedly connected between the hand wheel (20) and the slider (16).

3. According to claim 1, a high and low voltage electrical apparatus for new energy vehicles that is easy to install, characterized in that: The valve cavity (10) is in communication with the interior of the connecting port (8), and the connecting port (8) is in communication with the interior of the cavity (7).

4. According to claim 1, a high and low voltage electrical apparatus for new energy vehicles that is easy to install, characterized in that: One end of the spring (11) is fixedly connected to the middle of the piston (14), the other end of the spring (11) is fixedly connected to the inner wall of the valve cavity (10), and the outer periphery of the piston (14) is slidably connected to the inside of the valve cavity (10).

5. According to claim 2, a high and low voltage electrical apparatus for new energy vehicles that is easy to install, characterized in that: Receiving grooves (19) are provided on both sides of the middle of the heat conducting plate (1), and the hand wheel (20) is arranged inside the receiving groove (19) on a side close to the cavity (7).

6. The high and low voltage electrical appliances for new energy vehicles that are easy to install according to claim 2 are characterized by: The positioning rod (4) is slidably connected inside the mounting hole (6), and the insertion rod (17) passes through the heat conducting plate (1) and is inserted into the positioning hole (5).

7. The high and low voltage electrical appliances for new energy vehicles that are easy to install according to claim 2 are characterized by: One end of the compression spring (18) is fixedly connected to the middle of the slider (16), and the other end of the compression spring (18) is fixedly connected to the inner wall of the heat conducting plate (1).

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