New energy vehicle compressor motor noise reduction device

Abstract

The application relates to the field of motor noise reduction technology, in particular to a new energy vehicle compressor motor noise reduction device. The device comprises two noise reduction housings, the two noise reduction housings are connected with each other through a plurality of bolts, a sound insulation cavity is arranged in the noise reduction housing, a noise reduction and heat dissipation mechanism is arranged in the sound insulation cavity, noise entering the sound insulation cavity is absorbed through the noise reduction and heat dissipation mechanism, and a plurality of heat dissipation plates are fixedly connected in the sound insulation cavity. When the motor speed becomes large, the noise and heat generated by the motor become large, the water source in the water storage tank generates steam through the heat dissipation plates, the steam enters the guide box, the buffer transmission mechanism drives the pushing mechanism to move, the pushing mechanism is in contact with the noise reduction and heat dissipation mechanism and the plurality of heat dissipation plates, a plurality of small chambers are formed, the noise reduction effect is improved through the plurality of small chambers, and the cooling liquid is delivered to the noise reduction and heat dissipation mechanism through a liquid guide connecting mechanism.

Description

Technical Field

[0001] This invention relates to the field of motor noise reduction technology, specifically a noise reduction device for a compressor motor in a new energy vehicle. Background Technology

[0002] For example, Chinese patent CN104716772B discloses an active noise reduction device for an electric or hybrid vehicle motor, which includes a noise reduction housing and a controller. The noise reduction housing is fitted onto the motor body, and there is a gap between the noise reduction housing and the motor body. Multiple speakers are evenly distributed on the inner wall of the noise reduction housing. The controller is connected to the speakers and is used to drive the speakers to generate sound waves with opposite phase and the same amplitude as the noise generated by the motor to cancel the noise.

[0003] The aforementioned patent describes a noise-reducing housing fitted onto the motor body, with multiple speakers installed inside. These speakers generate sound waves with the opposite phase and the same amplitude as the noise signal, thus canceling out the noise and achieving noise reduction. However, this solution has the following shortcomings: For pure electric vehicles, since the compressor is driven by an electric motor, while the method described in the patent can reduce motor noise, the noise and heat emitted by the motor at high and low speeds are different. Although the patent can achieve simultaneous noise reduction, it cannot adjust the corresponding heat dissipation effect based on the motor speed. Therefore, we propose a noise reduction device for the compressor motor of a new energy vehicle. Summary of the Invention

[0004] The purpose of this invention is to provide a noise reduction device for a compressor motor in a new energy vehicle, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A noise reduction device for a compressor motor in a new energy vehicle includes two noise reduction housings connected to each other by a number of bolts. Each noise reduction housing has a sound insulation cavity, and a noise reduction and heat dissipation mechanism is installed inside the sound insulation cavity to absorb noise entering the sound insulation cavity. A number of heat dissipation plates are fixedly connected inside the sound insulation cavity, and a micro-touch switch is fixedly installed on the upper end of each heat dissipation plate. One end of each heat dissipation plate extends into the external environment. The upper end of the heat dissipation and noise reduction mechanism is connected to the pushing mechanism. The pushing mechanism is located in the connecting cavity, which is opened inside the noise reduction shell. The connecting cavity is connected to the sound insulation cavity. The pushing mechanism drives the heat dissipation and noise reduction mechanism to move, so that the heat dissipation and noise reduction mechanism comes into contact with several heat dissipation plates. One end of the noise reduction shell is fixedly connected to a water storage tank. Several heat dissipation plates pass through the water storage tank, which contains a water source. The upper end of the noise reduction shell and the upper end of the water storage tank are both fixedly connected to the guide box. The guide box and the water storage tank are interconnected through a connecting hole. The connecting hole is opened in the water storage tank and the connecting box. A buffer transmission mechanism is provided in the guide box. One end of the buffer transmission mechanism extends into the connecting cavity and is connected to the pushing mechanism. When the heat dissipation plate dissipates heat, it heats the water source in the water storage tank. The steam generated by the water source enters the guide box and drives the buffer transmission mechanism to move. One end of the noise-reducing shell is fixedly connected to a first arc-shaped plate. The first arc-shaped plate has several cavities. A liquid guiding connection mechanism is provided in the cavity. One end of the liquid guiding connection mechanism extends into the sound insulation cavity.

[0006] Preferably, the noise reduction and heat dissipation mechanism includes a plurality of heat dissipation rods, which are slidably connected to the sound insulation cavity. A U-shaped connecting cavity is provided in the heat dissipation rod. The plurality of heat dissipation rods are interconnected by a plurality of elastic noise reduction plates. The ends of the elastic noise reduction plates located on the left and right sides away from the heat dissipation rods are fixedly connected to the sound insulation cavity. A connecting rib is fixedly connected to the upper end of the elastic noise reduction plate, and the upper end of the connecting rib is fixedly connected to the sound insulation cavity.

[0007] Preferably, the pushing mechanism includes a second arc-shaped plate, which is slidably connected to the connecting cavity. A connecting rod is movably connected to the upper end of the heat dissipation rod. Several connecting rods extend into the connecting cavity at the ends away from the heat dissipation rod and are movably connected to the lower end of the second arc-shaped plate. Several supporting springs are fixedly connected to one side of the second arc-shaped plate, and the other end of the supporting springs is fixedly connected to the connecting cavity.

[0008] Preferably, the buffer transmission mechanism includes a circular box disposed within a guide box. One end of the circular box extends into the connecting cavity and is fixedly connected to the second arc-shaped plate. A T-shaped connecting rod is slidably connected to the other end of the circular box. A piston plate is fixedly connected to the end of the T-shaped connecting rod away from the circular box. The piston plate is slidably connected within the guide box. A connecting spring is fixedly connected inside the circular box, and the other end of the connecting spring is fixedly connected to the T-shaped connecting rod. Preferably, the liquid guiding connection mechanism includes a slide plate, which slides into the cavity. Two connecting pipes are fixedly connected to one side of the slide plate. The end of the connecting pipe away from the slide plate is arc-shaped and extends into the sound insulation cavity. Two flexible hoses are fixedly connected to the side of the slide plate away from the connecting pipes. The flexible hoses are connected to the connecting pipes. The end of the flexible hose away from the slide plate passes through the first arc-shaped plate and extends into the external environment. A return spring is fixedly connected to one side of the slide plate, and the other end of the return spring is fixedly connected to the cavity.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the motor is cooled by the arrangement of several heat dissipation plates, and noise is reduced by the arrangement of noise reduction shell, sound insulation cavity and noise reduction heat dissipation mechanism. When the motor speed increases, the noise and heat generated by the motor will increase. The heat dissipation plates cause the water in the water tank to generate steam. The steam enters the guide box, which causes the buffer transmission mechanism to drive the push mechanism to move. The push mechanism brings the noise reduction heat dissipation mechanism into contact with several heat dissipation plates, forming several individual small chambers. The arrangement of several small chambers improves the noise reduction effect. At the same time, the coolant is delivered to the noise reduction heat dissipation mechanism through the liquid guiding connection mechanism, thereby improving the noise reduction while further enhancing the heat dissipation of the motor. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0011] Figure 2 This is a three-dimensional structural diagram showing the connection relationship between the heat sink and the water tank of the present invention.

[0012] Figure 3 This is a three-dimensional structural diagram showing the connection relationship between the heat sink and the micro-touch switch of the present invention.

[0013] Figure 4 This is a three-dimensional cross-sectional view of the present invention.

[0014] Figure 5 This is a cross-sectional three-dimensional structural diagram of the first arc-shaped plate of the present invention.

[0015] Figure 6 This is a side-section three-dimensional structural diagram of the present invention.

[0016] Figure 7 This is a cross-sectional view of the contact state between the heat sink rod and the heat sink plate of the present invention.

[0017] Figure 8 This is a three-dimensional structural diagram illustrating the connection relationship between the skateboard and the connecting pipe of the present invention.

[0018] Figure 9 This is a three-dimensional structural diagram of the heat sink rod of the present invention.

[0019] Figure 10This is a three-dimensional structural diagram illustrating the connection relationship between the connecting rod and the second arc-shaped plate of the present invention.

[0020] In the diagram: 1. Noise-reducing outer shell; 2. First arc-shaped plate; 3. Bolt; 4. Heat sink; 5. Water tank; 6. Guide box; 7. Hose; 8. Heat sink rod; 9. Return spring; 10. Cavity; 11. Slide plate; 12. Connecting pipe; 13. Sound insulation cavity; 14. Connecting cavity; 15. Second arc-shaped plate; 16. T-shaped connecting rod; 17. Connecting spring; 18. Circular box; 19. Connecting rod; 20. U-shaped connecting cavity; 21. Connecting hole; 22. Piston plate; 23. Elastic noise-reducing plate; 24. Connecting rib; 25. Support spring; 26. Micro-touch switch. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-10 The present invention provides a technical solution: Example 1: A noise reduction device for a compressor motor in a new energy vehicle includes two noise reduction housings 1. The material of the noise reduction housings 1 can be a material with sound absorption and noise reduction effects, such as aluminum foam. The two noise reduction housings 1 are connected to each other by several bolts 3. The compressor motor is placed between the two noise reduction housings 1. After placement, the two noise reduction housings 1 are fixed by several bolts 3. A sound insulation cavity 13 is formed inside the noise reduction housing 13. A noise reduction and heat dissipation mechanism is set inside the sound insulation cavity 13 to absorb the noise entering the sound insulation cavity 13. Several heat dissipation plates 4 are fixedly connected inside the sound insulation cavity 13. The material of the heat dissipation plates 4 can be selected from... Made of corrosion-resistant and thermally conductive copper alloy, the heat sink 4 is placed inside the noise reduction housing 1 so that the heat generated by the motor can be absorbed by the heat sink 4 to the maximum extent. The upper end of the heat sink 4 is arc-shaped and concave. A micro-touch switch 26 is fixedly installed on the upper end of the heat sink 4. The micro-touch switch 26 can be selected with appropriate size and model when in use. When several micro-touch switches 26 are pressed, the external cooling equipment will allow the coolant to enter the hose 7. When one of the several micro-touch switches 26 is depressed, the coolant will stop entering the hose 7 and one end of the heat sink 4 will extend into the external environment. The upper end of the heat dissipation and noise reduction mechanism is connected to the pushing mechanism. The pushing mechanism is set in the connecting cavity 14. The connecting cavity 14 is opened in the noise reduction shell 1. The connecting cavity 14 is connected to the sound insulation cavity 13. The pushing mechanism drives the heat dissipation and noise reduction mechanism to move, so that the heat dissipation and noise reduction mechanism comes into contact with several heat dissipation plates 4. One end of the noise reduction shell 1 is fixedly connected to a water storage tank 5. Several heat dissipation plates 4 pass through the water storage tank 5. The water storage tank 5 is provided with a water source. The upper end of the noise reduction housing 1 and the upper end of the water storage tank 5 are both fixedly connected to the guide box 6. The guide box 6 and the water storage tank 5 are interconnected through the connection hole 21. The connection hole 21 is opened in the water storage tank 5 and the guide box 6. The guide box 6 is equipped with a buffer transmission mechanism. One end of the buffer transmission mechanism extends into the connection cavity 14 and is connected to the push mechanism. When the heat dissipation plate 4 is used for heat dissipation, the water source in the water storage tank 5 is heated. The steam generated by the water source enters the guide box 6 and drives the buffer transmission mechanism to move through the steam. One end of the noise-reducing housing 1 is fixedly connected to a first arc-shaped plate 2. The first arc-shaped plate 2 has several cavities 10. A liquid guiding connection mechanism is provided in the cavity 10. One end of the liquid guiding connection mechanism extends into the sound insulation cavity 13. After being connected to the noise-reducing heat dissipation mechanism through the liquid guiding connection mechanism, the coolant in the external cooling equipment can enter the noise-reducing heat dissipation mechanism, so that the noise-reducing heat dissipation mechanism can improve the noise reduction effect and also improve the heat dissipation effect of the motor.

[0023] Example 2: Based on Example 1, in order to improve the sound insulation and noise reduction effect when the motor is running at high speed, the noise reduction and heat dissipation mechanism includes several heat dissipation rods 8, which are slidably connected in the sound insulation cavity 13. A U-shaped connecting cavity 20 is opened in the heat dissipation rod 8. Several heat dissipation rods 8 are connected to each other through several elastic noise reduction plates 23. The ends of the elastic noise reduction plates 23 located on the left and right sides away from the heat dissipation rods 8 are fixedly connected to the sound insulation cavity 13. A connecting rib 24 is fixedly connected to the upper end of the elastic noise reduction plate 23. The upper end of the connecting rib 24 is fixedly connected to the sound insulation cavity 13. The part of the elastic noise reduction plate 23 that is not connected to the sound insulation cavity 13 is tightly fitted to the sound insulation cavity 13. The elastic noise reduction plate 23 should be made of rubber-based sound-absorbing materials, such as closed-cell sponge rubber, foamed rubber, etc. The driving mechanism includes a second arc-shaped plate 15, which slides within the connecting cavity 14. A connecting rod 19 is movably connected to the upper end of the heat dissipation rod 8. Several connecting rods 19 extend into the connecting cavity 14 at their ends away from the heat dissipation rod 8 and are movably connected to the lower end of the second arc-shaped plate 15. Several support springs 25 are fixedly connected to one side of the second arc-shaped plate 15, and the other end of each support spring 25 is fixedly connected to the connecting cavity 14. When the second arc-shaped plate 15 moves, it drives the several connecting rods 19 to move, and the connecting rods 19, in turn, drive the... The heat dissipation rod 8 connected at the lower end moves downward. The buffer transmission mechanism includes a circular box 18, which is disposed inside the guide box 6. One end of the circular box 18 extends into the connecting cavity 14 and is fixedly connected to the second arc-shaped plate 15. A T-shaped connecting rod 16 is slidably connected inside the other end of the circular box 18. A piston plate 22 is fixedly connected to the end of the T-shaped connecting rod 16 away from the circular box 18. The piston plate 22 is slidably connected inside the guide box 6. A connecting spring 17 is fixedly connected inside the circular box 18. The other end of the connecting spring 17 is fixedly connected to the T-shaped connecting rod 16. The liquid guiding connection mechanism includes a slide plate 11, which slides into the cavity 10. Two connecting pipes 12 are fixedly connected to one side of the slide plate 11. The end of the connecting pipe 12 away from the slide plate 11 is arc-shaped and extends into the sound insulation cavity 13. Two flexible hoses 7 are fixedly connected to the side of the slide plate 11 away from the connecting pipes 12. The flexible hoses 7 are connected to the connecting pipes 12. The end of the flexible hoses 7 away from the slide plate 11 passes through the first arc-shaped plate 2 and extends into the external environment. A return spring 9 is fixedly connected to one side of the slide plate 11. The other end of the return spring 9 is fixedly connected to the cavity 10. When the heat dissipation rod 8 moves downward, the connecting pipes 12 are squeezed because the extension end of the connecting pipes 12 is arc-shaped. At this time, the connecting pipes 12 drive the slide plate 11 to move along the cavity 10. The movement of the slide plate 11 compresses the return spring 9. When the two connecting pipes 12 move to the position of the U-shaped connecting cavity 20, the arc-shaped end of the connecting pipe 12 will be engaged in the U-shaped connecting cavity 20 under the elastic force of the return spring 9.

[0024] Working principle: During use, the compressor motor is placed between two noise-reducing housings 1. After placement, the two noise-reducing housings 1 are fixed with several bolts 3. Several heat dissipation plates 4 can dissipate the heat transferred from the motor to the noise-reducing housings 1. When the motor speed is high and generates a lot of heat, the heat dissipation plates 4 will heat the water source in the water storage tank 5 while dissipating heat. As the temperature continues to rise, the water source in the water storage tank 5 will generate steam and enter the guide box 6 through the connecting hole 21. The steam entering the guide box 6 will push the piston plate 22 to move. Under the elastic force of the connecting spring 17, the T-shaped connecting rod 16 will push the circular box 18 to move. The movement of the circular box 18 will push the second arc plate 15 to move along the connecting cavity 14. When the second arc plate 15 moves, it drives several connecting rods 19 to move. When the connecting rods 19 move, they drive the heat dissipation rods 8 connected to their lower ends to move downward. When the lower end of the heat dissipation rod 8 contacts the upper end of the heat dissipation plate 4, the second arc plate 15 can no longer move. When the excess steam enters the guide box 6 and continues to push the piston plate 22, the T-shaped connecting rod 16 will move along the circular box 18. At this time, the T-shaped connecting rod 16 will compress the connecting spring 17 to achieve buffering. At the same time, the condensed steam re-enters the water storage tank 5 through the connecting hole 21 for storage. After the heat dissipation rod 8 contacts the upper end of the heat dissipation plate 4, under the limitation of the connecting rib 24, the elastic noise reduction plate 23 is bent by several heat dissipation rods 8, so that the sound insulation cavity 13 is divided into several small chambers. The small chambers formed by several bent elastic noise reduction plates 23 improve the uniformity of noise reduction, reduce flow resistance, and improve the noise reduction effect. When the heat sink 8 moves downward, the connecting pipe 12 is curved at the end, so it will squeeze the connecting pipe 12 as the heat sink 8 moves downward. At this time, the connecting pipe 12 drives the sliding plate 11 to move along the cavity 10. The sliding plate 11 compresses the return spring 9. When the two connecting pipes 12 move to the position of the U-shaped connecting cavity 20, the curved end of the connecting pipe 12 will be engaged in the U-shaped connecting cavity 20 under the elastic force of the return spring 9. At the same time, after the lower end of the heat sink 8 is in complete contact with the upper end of the heat sink 4, the micro-touch switch 26 will be pressed. At this time, the external cooling device is started. The external cooling device is connected to the two hoses 7, so that the coolant enters into one hose 7 and then enters into the U-shaped connecting cavity 20 through the connecting pipe 12. After entering the U-shaped connecting cavity 20, the coolant dissipates heat from the heat sink 8. The cooled coolant is then discharged through the other hose 7. When the motor speed decreases, the heat generated is also reduced compared to the high speed state, resulting in lower noise and a lower temperature of the heat sink 4. The amount of steam generated in the water tank 5 decreases. Under the elastic force of the support spring 25, the second arc plate 15 returns to its initial position, and the heat sink 8 moves upward again. At this time, the micro-touch switch 26 located at the upper end of the heat sink 4 is depressed, causing the coolant to stop entering the hose 7. When the heat sink 8 moves upward, the connecting pipe 12, which is engaged in the U-shaped connecting cavity 20, disengages.

[0025] 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 noise reduction device for a compressor motor in a new energy vehicle, comprising two noise reduction housings, characterized in that: The two noise-reducing shells are connected to each other by a number of bolts. A sound insulation cavity is provided inside the noise-reducing shell. A noise-reducing heat dissipation mechanism is provided inside the sound insulation cavity to absorb the noise entering the sound insulation cavity. A number of heat dissipation plates are fixedly connected inside the sound insulation cavity. A micro-touch switch is fixedly installed on the upper end of the heat dissipation plate. One end of the heat dissipation plate extends into the external environment. The upper end of the noise reduction and heat dissipation mechanism is connected to the pushing mechanism. The pushing mechanism is located in the connecting cavity, which is opened inside the noise reduction shell. The connecting cavity is connected to the sound insulation cavity. The pushing mechanism drives the noise reduction and heat dissipation mechanism to move, so that the noise reduction and heat dissipation mechanism comes into contact with several heat dissipation plates. One end of the noise reduction shell is fixedly connected to a water storage tank. Several heat dissipation plates pass through the water storage tank, which contains a water source. The upper end of the noise-reducing shell and the upper end of the water storage tank are both fixedly connected to the guide box. The guide box and the water storage tank are interconnected through a connecting hole. The connecting hole is opened in the water storage tank and the guide box. A buffer transmission mechanism is provided in the guide box. One end of the buffer transmission mechanism extends into the connecting cavity and is connected to the pushing mechanism. When heat is dissipated through the heat sink, the water source in the water storage tank is heated. The steam generated by the water source enters the guide box and drives the buffer transmission mechanism to move. One end of the noise reduction shell is fixedly connected to a first arc-shaped plate. The first arc-shaped plate has several cavities. A liquid guiding connection mechanism is provided in the cavity. One end of the liquid guiding connection mechanism extends into the sound insulation cavity. The noise reduction and heat dissipation mechanism includes several heat dissipation rods, which are slidably connected in the sound insulation cavity. A U-shaped connecting cavity is opened in the heat dissipation rod. Several heat dissipation rods are connected to each other through several elastic noise reduction plates. The ends of the elastic noise reduction plates located on the left and right sides away from the heat dissipation rods are fixedly connected to the sound insulation cavity. A connecting rib is fixedly connected to the upper end of the elastic noise reduction plate, and the upper end of the connecting rib is fixedly connected to the sound insulation cavity. The pushing mechanism includes a second arc-shaped plate, which slides in the connecting cavity. A connecting rod is movably connected to the upper end of the heat dissipation rod. Several connecting rods extend into the connecting cavity from one end away from the heat dissipation rod and are movably connected to the lower end of the second arc-shaped plate. Several supporting springs are fixedly connected to one side of the second arc-shaped plate, and the other end of the supporting springs is fixedly connected to the connecting cavity.

2. The noise reduction device for a compressor motor in a new energy vehicle according to claim 1, characterized in that: The buffer transmission mechanism includes a circular box, which is disposed inside a guide box. One end of the circular box extends into the connecting cavity and is fixedly connected to the second arc-shaped plate. A T-shaped connecting rod is slidably connected inside the other end of the circular box. A piston plate is fixedly connected to the end of the T-shaped connecting rod away from the circular box. The piston plate is slidably connected inside the guide box. A connecting spring is fixedly connected inside the circular box. The other end of the connecting spring is fixedly connected to the T-shaped connecting rod.

3. The noise reduction device for a compressor motor in a new energy vehicle according to claim 1, characterized in that: The liquid guiding connection mechanism includes a slide plate that slides into the cavity. Two connecting pipes are fixedly connected to one side of the slide plate. The end of the connecting pipe away from the slide plate is arc-shaped and extends into the sound insulation cavity. Two flexible hoses are fixedly connected to the side of the slide plate away from the connecting pipes. The flexible hoses are connected to the connecting pipes. The end of the flexible hose away from the slide plate passes through the first arc-shaped plate and extends into the external environment. A return spring is fixedly connected to one side of the slide plate. The other end of the return spring is fixedly connected to the cavity.

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