Combined device for noise reduction of driving motor

Abstract

The invention discloses a combined device for noise reduction of a driving motor, and relates to the technical field of noise reduction equipment. The sound insulation device is assembled on the periphery of a driving motor and comprises a first side wall sound insulation device body, a second side wall sound insulation device body, a tail end sound insulation device body and a shaft end sound insulation device body, the first side wall sound insulation device body wraps one side of the driving motor, and the second side wall sound insulation device body wraps the other side of the driving motor. The tail end sound insulation device wraps the rear end of the driving motor, and the shaft end sound insulation device wraps the front end of the driving motor. The motor cabin is used for solving the noise problem of motor operation, the motor operation noise is blocked from all directions and all angles, the noise value in the motor cabin is effectively reduced, and the comfort level of a driver and passengers is improved.

Description

Technical Field

[0001] This invention belongs to the field of noise reduction equipment technology, specifically, it relates to a combined device for noise reduction of drive motors. Background Technology

[0002] With the rapid development of the new energy vehicle industry, new energy buses, as an important component of urban transportation, are receiving increasing attention for their environmental protection and energy-saving features. In new energy buses, the drive motor, as the core power component replacing the traditional fuel engine, directly affects the vehicle's power output, driving range, and passenger comfort. However, during operation, especially under load, the motor generates electromagnetic noise, caused by the interaction of electromagnetic fields within the motor and the movement of mechanical components.

[0003] Currently, the drive motors used in new energy buses are typically installed at the lower rear of the vehicle. This location is chosen primarily for reasons such as vehicle center of gravity balance, drive efficiency, and space utilization. However, because the motor compartment often lacks effective sound insulation and noise reduction measures, the noise generated by the motor during operation can easily be transmitted directly into the passenger compartment, negatively impacting the riding experience for both the driver and passengers. Especially during high-speed driving or acceleration, the motor noise can become particularly sharp and noticeable, further reducing passenger comfort.

[0004] Therefore, there is an urgent need for a noise reduction device that can effectively isolate the noise of the drive motor of new energy buses and improve the riding comfort of drivers and passengers. Summary of the Invention

[0005] This invention provides a combined device for reducing noise in drive motors, which solves the problem of motor operating noise. It blocks motor operating noise from all directions and angles, effectively reducing the noise level inside the motor compartment and improving the comfort of the driver and passengers.

[0006] The technical solution used in this invention is as follows:

[0007] A combined device for noise reduction of a drive motor is assembled around the drive motor and includes a first side sound insulation device, a second side sound insulation device, a rear end sound insulation device, and a shaft end sound insulation device. The first side sound insulation device covers one side of the drive motor, the second side sound insulation device covers the other side of the drive motor, the rear end sound insulation device covers the rear end of the drive motor, and the shaft end sound insulation device covers the front end of the drive motor.

[0008] Furthermore, the side wall sound insulation device one, side wall sound insulation device two, tail end sound insulation device and shaft end sound insulation device are all composed of an outer layer of nano fireproof cloth and an inner layer of DL sound insulation felt material.

[0009] Furthermore, the side sound insulation device is rectangular in planar state, and the outer ring of the side sound insulation device is composed of a top edge, a bottom edge, a left side, and a right side. An A-side adhesive strip is provided on the surface of the top edge, bottom edge, left side, and right side.

[0010] Furthermore, the second side sound insulation device is rectangular in planar state. The outer ring of the second side sound insulation device is composed of a top edge, a bottom edge, a left edge, and a right edge. An A-side adhesive strip is provided on the surface of the top edge and the bottom edge, and a B-side adhesive strip is provided on the inner side of the left edge and the right edge.

[0011] Furthermore, the tail end sound insulation device includes a disc and a tail end side, and a B-side adhesive strip is provided on the inner side of the tail end side. The shaft end sound insulation device includes a ring and a shaft end side, and a B-side adhesive strip is provided on the inner side of the shaft end side.

[0012] Furthermore, the adhesive strip on side A and the adhesive strip on side B are adhered to each other.

[0013] Furthermore, the side sound insulation device has a nameplate hole and a water inlet / outlet hole in the middle position, and there are two water inlet / outlet holes.

[0014] Furthermore, a rectangular hole is provided in the middle of the tail end sound insulation device, and a rectangular groove is provided at the edge of the tail end sound insulation device.

[0015] The beneficial effects of this invention are:

[0016] 1. This invention provides a noise reduction assembly specifically designed for drive motors. It can be directly attached to the periphery of the drive motor, making assembly easy without requiring additional modifications to the vehicle or the addition of complex noise detection and feedback devices. This feature not only simplifies the assembly process and reduces production costs, but also ensures that the original operation of the motor mounted on the vehicle remains unaffected, maintaining the original performance and structural integrity of the vehicle.

[0017] 2. The combined device of the present invention is highly practical. By fully enclosing the drive motor, it can effectively reduce the noise level around the motor during operation, thereby improving the ride comfort of the driver and passengers. At the same time, while ensuring the noise reduction effect, the device does not affect the heat dissipation performance and maximum output capacity of the motor itself, ensuring the power performance and safety of the entire vehicle.

[0018] 3. This invention addresses motor noise reduction from the perspective of acoustic encapsulation, breaking away from the market's approach of strengthening structural rigidity and changing control strategies. This not only facilitates practical manufacturing and application and reduces costs, but also provides a new solution for motor noise reduction, thus promoting technological progress in the field of new energy vehicles. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the combined device for noise reduction of drive motors provided by the present invention;

[0020] Figure 2 A structural unfolded view of the side enclosure sound insulation device provided by the present invention;

[0021] Figure 3 This is a structural unfolded view of the side enclosure sound insulation device II provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the tail-end sound insulation device provided by the present invention;

[0023] Figure 5 This is a schematic diagram of the shaft end sound insulation device provided by the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Side wall sound insulation device one; 2. Side wall sound insulation device two; 3. Tail end sound insulation device; 4. Shaft end sound insulation device; 5. Nameplate; 6. Inlet and outlet water nozzles; 7. Low-voltage socket; 8. High-voltage junction box; 11. Top edge one; 12. Bottom edge one; 13. Left side one; 14. Right side one; 15. Nameplate hole; 16. Inlet and outlet water holes; 21. Top edge two; 22. Bottom edge two; 23. Left side two; 24. Right side two; 31. Tail end side; 32. Disc; 33. Rectangular hole; 34. Rectangular groove; 41. Shaft end side; 42. Ring. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figures 1-5As shown, this embodiment provides a combined device for noise reduction of a drive motor, assembled around the drive motor. It includes a side sound insulation device 1, a second side sound insulation device 2, a rear sound insulation device 3, and a shaft end sound insulation device 4. All four devices are composed of an outer layer of nano-fireproof cloth and an inner layer of DL sound insulation felt. The first side sound insulation device 1 covers one side of the drive motor, the second side sound insulation device 2 covers the other side, the rear sound insulation device 3 covers the rear end of the drive motor, enclosing the rear end cover of the drive motor body, and the shaft end sound insulation device 4 covers the front end of the drive motor, enclosing the front end cover of the drive motor body.

[0029] Specifically, such as Figure 2 As shown, the side sound insulation device 1 is rectangular in its unfolded planar state. The outer ring of the side sound insulation device 1 consists of an upper top edge 11, a lower bottom edge 12, a left side edge 13, and a right side edge 14. An A-side adhesive strip is provided on the surface of the upper top edge 11, lower bottom edge 12, left side edge 13, and right side edge 14. A nameplate hole 15 and water inlet / outlet holes 16 are provided in the middle of the side sound insulation device 1. There are two water inlet / outlet holes 16. The nameplate hole 15 is to provide a viewing window on the side sound insulation device 1 so that the nameplate information 5 on the drive motor body can be clearly seen. In the daily maintenance and troubleshooting of the motor, this information can be easily read without disassembling the sound insulation device. The water inlet / outlet holes 16 expose the water inlet / outlet nozzles 6 of the drive motor, allowing coolant or water to circulate between the water inlet / outlet nozzles 6 of the motor, thereby removing heat and keeping the motor temperature within a safe range, ensuring that the cooling system of the drive motor can work normally.

[0030] Specifically, such as Figure 3 As shown, the side sound insulation device 2 is rectangular in its unfolded planar state. The outer ring of the side sound insulation device 2 consists of the top edge 21, the bottom edge 22, the left side edge 23, and the right side edge 24. The surface of the top edge 21 and the bottom edge 22 is provided with an A-side adhesive strip, and the inner side of the left side edge 23 and the right side edge 24 is provided with a B-side adhesive strip.

[0031] Specifically, such as Figure 4As shown, the tail-end soundproofing device 3 includes a disc 32 and a tail-end side 31. A B-side adhesive strip is provided on the inner side of the tail-end side 31. A rectangular hole 33 is opened in the middle of the tail-end soundproofing device 3, and a rectangular groove 34 is opened at the edge of the tail-end soundproofing device 3. The rectangular hole 33 is used to avoid the low-voltage socket 7 of the drive motor, ensuring that the soundproofing device will not block or hinder the use of the low-voltage socket 7 during installation, thereby ensuring the normal power supply and control function of the motor. The rectangular groove 34 is used to avoid the high-voltage junction box 8 of the drive motor, ensuring that the soundproofing device will not compress or damage the high-voltage junction box 8 and its connecting cables during installation, thereby ensuring the electrical safety and reliability of the motor.

[0032] Specifically, such as Figure 5 As shown, the shaft end sound insulation device 4 includes a ring 42 and a shaft end side 41, and a B-side adhesive strip is provided on the inner side of the shaft end side 41.

[0033] The principle of this invention is as follows: the A-side adhesive strips on the left side 13 and right side 14 of the side sound insulation device 1 are respectively adhered to the B-side adhesive strips on the inner side of the left side 23 and right side 24 of the side sound insulation device 2, so that the side sound insulation device 1 and the side sound insulation device 2 form a cylindrical whole, which covers the outer surface of the drive motor housing, and the side sound insulation device 1, the side sound insulation device 2 and the housing are constrained and fixed in the radial direction.

[0034] The B-side adhesive strip on the inner side 31 of the tail end sound insulation device 3 is attached to the A-side adhesive strip on the surface of the lower bottom edge 12 and the lower bottom edge 22. The B-side adhesive strip on the inner side 41 of the shaft end sound insulation device 4 is attached to the A-side adhesive strip on the upper bottom edge 1 and the upper bottom edge 2, so that the side wall sound insulation device 1, the side wall sound insulation device 2, the tail end sound insulation device 3 and the shaft end sound insulation device 4 form a whole, which is constrained and fixed with the drive motor in both the radial and axial directions.

[0035] After using the combined device for noise reduction of drive motor of the above invention, the noise level around the motor during operation, i.e. in the motor compartment of the whole vehicle, can be effectively reduced. No other devices need to be added to the whole vehicle. It has no impact on the operation of the motor installed on the whole vehicle and does not affect the motor's operating performance, thus improving the comfort of the driver and passengers.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A combined device for reducing the noise of a driving motor, mounted on the periphery of the driving motor, characterized in that: The invention comprises a side enclosure sound insulation device 1 (1), a side enclosure sound insulation device 2 (2), a rear end sound insulation device (3) and a shaft end sound insulation device (4), wherein the side enclosure sound insulation device 1 (1) is covered on one side of the drive motor, the side enclosure sound insulation device 2 (2) is covered on the other side of the drive motor, the rear end sound insulation device (3) is covered on the rear end of the drive motor, and the shaft end sound insulation device (4) is covered on the front end of the drive motor.

2. A combined device for reducing noise of a driving motor according to claim 1, characterized in that: The side enclosure sound insulation device 1 (1), the side enclosure sound insulation device 2 (2), the tail end sound insulation device (3) and the shaft end sound insulation device (4) are all composed of an outer layer of nano fireproof cloth and an inner layer of DL sound insulation felt material.

3. A combined device for reducing noise of a driving motor according to claim 1, characterized in that: The side enclosure sound insulation device (1) is rectangular in a planar state, and the outer ring of the side enclosure sound insulation device (1) is composed of an upper top edge (11), a lower bottom edge (12), a left side edge (13) and a right side edge (14), and an A-side adhesive strip is arranged on the surface of the upper top edge (11), the lower bottom edge (12), the left side edge (13) and the right side edge (14).

4. A combined device for reducing noise of a driving motor according to claim 3, characterized in that: The side enclosure sound insulation device 2 (2) is rectangular in a planar state, and the outer circle of the side enclosure sound insulation device 2 (2) is composed of an upper top edge 2 (21), a lower bottom edge 2 (22), a left side edge 2 (23) and a right side edge 2 (24). An A-side adhesive strip is arranged on the surface of the upper top edge 2 (21) and the lower bottom edge 2 (22), and a B-side adhesive strip is arranged on the inner side of the left side edge 2 (23) and the right side edge 2 (24).

5. A combined device for reducing noise of a driving motor according to claim 4, characterized in that: The tail end sound insulation device (3) comprises a disc (32) and a tail end side edge (31), and a B-side adhesive strip is arranged on the inner side of the tail end side edge (31). The shaft end sound insulation device (4) comprises a ring (42) and a shaft end side edge (41), and a B-side adhesive strip is arranged on the inner side of the shaft end side edge (41).

6. A combined device for reducing noise of a driving motor according to claim 5, characterized in that: The A-side adhesive strip and the B-side adhesive strip are adhered to each other.

7. A combined device for reducing noise of a driving motor according to claim 1 or 3, characterized in that: A nameplate hole (15) and a water inlet and outlet hole (16) are provided in the middle of the side enclosure sound insulation device (1), and two water inlet and outlet holes (16) are provided.

8. A combined device for reducing noise of a driving motor according to claim 1 or 5, characterized in that: A rectangular hole (33) is provided in the middle of the tail end sound insulation device (3), and a rectangular groove (34) is provided at the edge of the tail end sound insulation device (3).

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