Forced ventilation system for reducing thermal attenuation of EMB motor

Abstract

The utility model discloses a forced ventilation system for reducing thermal attenuation of an EMB motor, and relates to the technical field of vehicle intelligent driving and brake-by-wire, the forced ventilation system comprises a connecting part, a heat dissipation part and a guide part, air is conveyed to the EMB motor through a guide pipe, heat of a brake disc is taken away, high-temperature demagnetization of the motor is effectively prevented, and the brake performance is stabilized; an operator screws a heat dissipation adjusting nut, the angle of a heat dissipation fan blade can be flexibly adjusted, air is accurately controlled, and different working conditions are adapted; hub shaft power is ingeniously used, an extra power source and a complex electronic system are not needed, the structure is simplified, cost and faults are reduced, and reliability is enhanced; during braking, the guiding counterweight ring drives parts to continuously dissipate heat through inertia, the structure is compact, installation is convenient, and the vehicle structure does not need to be greatly transformed; the guide pipe is made of silicone rubber and sleeved with a copper protective sleeve, is durable and stable, and facilitates wide application.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle intelligent driving and line control brake technical field, concretely is a forced ventilation system that reduces EMB motor heat attenuation. BACKGROUND

[0002] In the automobile industry vigorous development, the performance and safety of vehicle braking system become the focus of attention, the traditional hydraulic brake system gradually shows many drawbacks in long -term practice, electronic mechanical brake (EMB) technology rises with the occasion, becomes the key development trend in the field of automobile brake. EMB technology replaces traditional hydraulic control with electronic control, the advantage is remarkable, in the signal transmission link, electronic signal transmission speed far exceeds hydraulic signal, greatly speeds up the brake response speed, can effectively shorten the braking distance, provides more solid guarantee for driving safety.

[0003] However, in the automobile brake, the fierce friction between brake disc and brake block and the continuous operation of EMB motor, can produce a large amount of heat, brake disc is usually installed in the tire inside, the existence of tire seriously influences the heat dissipation of brake disc, the tire is equivalent to a barrier that prevents heat dissipation, so that the heat generated by brake disc is difficult to quickly dissipate to the surrounding environment;At the same time, EMB motor also generates heat when working;These heat spreads in the form of thermal infrared radiation, causing the temperature of the magnetic elements inside the EMB motor to rise sharply, once the temperature exceeds the tolerance limit of the magnetic material, the field strength will decline, that is, high temperature demagnetization phenomenon, which will directly lead to the reduction of output torque and power of EMB drive motor, and then reduce the braking torque of the vehicle, greatly increase the braking distance, seriously weaken the braking performance of the vehicle, and bury a huge hidden danger for driving safety.

[0004] In summary, it has become a key topic to be tackled to develop an efficient, reliable and simple structure heat dissipation system to reduce the heat attenuation of EMB motor. This not only helps to improve the performance and stability of EMB system, promotes its wide application in the field of automobile, but also plays an important role in enhancing the overall safety and reliability of the automobile. UTILITY MODEL CONTENT

[0005] In view of the above technical problems, the utility model provides technical scheme as follows: a forced ventilation system for reducing EMB motor heat attenuation, connecting part is connected with wheel hub, the connecting part is provided with heat dissipation part for driving air flow, the connecting part includes connecting seat, connecting disc is fixedly arranged on connecting seat, connecting ratchet is arranged in connecting disc, connecting ratchet meshes with heat dissipation part to drive heat dissipation part to rotate, heat dissipation part includes heat dissipation ratchet tooth that meshes with connecting ratchet, heat dissipation ratchet tooth is rotationally arranged on heat dissipation base, heat dissipation ratchet tooth controls its position through heat dissipation spring piece, heat dissipation cylinder is fixedly arranged on heat dissipation base, a plurality of heat dissipation fan blades are rotationally arranged on the side wall of heat dissipation cylinder, heat dissipation adjusting cylinder is slidably arranged on heat dissipation cylinder, heat dissipation adjusting groove is arranged on heat dissipation adjusting cylinder, and heat dissipation adjusting groove and heat dissipation fan blade are slidably matched.

[0006] Further, the heat dissipation adjusting cylinder is provided with a heat dissipation adjusting nut through threads, and the other end of the heat dissipation adjusting nut is rotationally arranged on the heat dissipation cylinder.

[0007] Further, the connecting seat is provided with a plurality of mounting holes arranged in a circular array.

[0008] Further, the heat dissipation part is fixedly provided with a guide part for energy storage, the guide part includes a guide disc fixedly arranged on the heat dissipation base, and the guide disc is detachably provided with a guide counterweight ring one and a guide counterweight ring two through a guide nut.

[0009] Further, the guide disc is provided with a vent hole, one end of the guide disc is detachably provided with a guide cover for guiding the air flow direction through threads, the guide cover is rotationally provided with a guide ring, and the guide ring is fixedly provided with a guide pipe.

[0010] Further, the guide pipe is made of silicone rubber material, and a mesh protective sleeve made of copper is sleeved outside the guide pipe.

[0011] The utility model has the advantages that compared with the prior art, the utility model has the advantages that:

[0012] 1. The heat dissipation efficiency is excellent, and the braking performance is stable; the system innovatively introduces air from the connecting part through the heat dissipation fan blades, and the air is transported to the EMB motor through the guide pipe, thereby synchronously taking away the heat generated by the brake disc. This design effectively prevents demagnetization of the EMB motor caused by high temperature, ensures stable motor output torque and power, maintains vehicle braking torque, shortens braking distance, and lays a solid foundation for driving safety, thereby significantly improving the reliability and stability of the braking system.

[0013] 2. Flexible adjustment mechanism and strong adaptability to operating conditions: Operators can easily drive the cooling adjustment cylinder to slide along the axial direction of the cooling cylinder by simply turning the cooling adjustment nut manually, thereby adjusting the deflection direction and angle of the cooling fan blades to achieve precise control of the air intake. This allows the system to flexibly adapt to cooling needs based on different vehicle driving conditions, such as high-speed driving and frequent braking, which generate different amounts of heat.

[0014] 3. Ingenious power utilization, simple and reliable system: It cleverly utilizes the power of the wheel hub axle when the wheel rotates, eliminating the need for an additional external power source and complex electronic control system. When the car is in motion, the wheel hub drives the system to operate and dissipate heat, which not only simplifies the overall structure, reduces manufacturing costs and failure rate, but also eliminates dependence on the vehicle's electronic system. Even if the vehicle's electronic system malfunctions, the cooling system can still operate normally, greatly enhancing the system's reliability and stability.

[0015] 4. Unique inertia utilization ensures continuous heat dissipation: When the car comes to a stop, the connecting part stops rotating, but the guide counterweight ring continues to drive the heat dissipation components by inertia, continuously cooling the brake disc and EMB motor. This unique design fills the gap in heat dissipation when the car is briefly stopped, further ensuring the safety and reliability of the braking system under various conditions.

[0016] 5. The system features an ingenious structural design and is easy to install and maintain. The system has a compact structure, and the connecting parts can be easily fixed to the outer surface of the wheel hub through the mounting holes arranged in a circular array on the connecting seat. The related components of the guide part are easy to install and disassemble. The whole system does not require large-scale modification of the original vehicle structure. The installation process is simple and efficient, reducing installation costs and difficulties. The subsequent maintenance is also more convenient, which is conducive to the widespread application and promotion of the product.

[0017] 6. High-quality and reasonable materials ensure a long service life; the guide tube is made of silicone rubber, which has good flexibility, high temperature resistance and corrosion resistance, and can adapt to the complex and harsh automotive operating environment. The copper mesh protective sleeve on the outside enhances the mechanical strength of the guide tube, prevents damage from external forces, and improves the stability and service life of the system. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 3 This is a frontal view of the overall structure of this utility model.

[0021] Figure 4 This is a side view of the overall structure of this utility model.

[0022] Figure 5 Partial structure schematic diagram of the utility model.

[0023] Figure 6 Partial structure schematic diagram of the utility model connecting portion Figure 1 .

[0024] Figure 7 Partial structure schematic diagram of the utility model connecting portion Figure 2 .

[0025] Figure 8 Partial structure schematic diagram of the utility model heat dissipation portion Figure 1 .

[0026] Figure 9 Partial structure schematic diagram of the utility model heat dissipation portion Figure 2 .

[0027] Figure 10 Partial structure schematic diagram of the utility model heat dissipation base.

[0028] Figure 11 Partial structure schematic diagram of the utility model heat dissipation portion Figure 3 .

[0029] Figure 12 Partial structure schematic diagram of the utility model heat dissipation portion Figure 4 .

[0030] Figure 13 Partial structure schematic diagram of the utility model guide portion Figure 1 .

[0031] Figure 14 Partial structure schematic diagram of the utility model guide portion Figure 2 .

[0032] Reference numerals: 1-connecting portion; 2-heat dissipation portion; 3-guide portion; 101-connecting seat; 102-connecting disc; 103-connecting ratchet wheel; 201-heat dissipation base; 202-heat dissipation ratchet tooth; 203-heat dissipation elastic sheet; 204-heat dissipation fan blade; 205-heat dissipation cylinder; 206-heat dissipation adjusting nut; 207-heat dissipation adjusting cylinder; 208-heat dissipation adjusting groove; 301-guide disc; 302-guide nut; 303-guide counterweight ring one; 304-guide counterweight ring two; 305-guide pipe; 306-guide ring; 307-guide cover. DETAILED DESCRIPTION

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1 to 4 As shown, a forced ventilation system for reducing thermal attenuation of an EMB motor includes a connecting part 1 connected to a hub, a heat dissipation part 2 for driving airflow on the connecting part 1, and a guide part 3 on the heat dissipation part 2.

[0035] like Figures 1 to 7 As shown, the connecting part 1 includes a connecting seat 101, a connecting plate 102, and a connecting ratchet 103; the connecting seat 101 is disc-shaped, and the connecting plate 102 is fixedly disposed on the connecting seat 101. The connecting ratchet 103 is disposed inside the connecting plate 102. The connecting ratchet 103 engages with the heat dissipation part 2 to drive the heat dissipation part 2 to rotate; the connecting seat 101 is provided with a plurality of mounting holes arranged in a circular array; the connecting plate 102 is rotatably disposed on the heat dissipation base 201.

[0036] like Figures 1 to 14 As shown, the heat dissipation unit 2 includes a heat dissipation base 201, a heat dissipation ratchet tooth 202, a heat dissipation spring 203, a heat dissipation fan blade 204, a heat dissipation cylinder 205, a heat dissipation adjusting nut 206, a heat dissipation adjusting cylinder 207, and a heat dissipation adjusting groove 208. The heat dissipation ratchet tooth 202 meshes with the connecting ratchet 103. The heat dissipation ratchet tooth 202 is rotatably mounted on the heat dissipation base 201. The position of the heat dissipation ratchet tooth 202 is controlled by the heat dissipation spring 203, so that the heat dissipation ratchet tooth 202 and the connecting ratchet 103 are tightly engaged. The heat dissipation spring 203 and the heat dissipation ratchet tooth 202 are also engaged. 02 are arranged in a circular array along the center of the heat dissipation base 201. A heat dissipation cylinder 205 is fixedly installed on the heat dissipation base 201. Multiple heat dissipation fan blades 204 are rotatably installed on the side wall of the heat dissipation cylinder 205. A heat dissipation adjustment cylinder 207 is slidably sleeved on the heat dissipation cylinder 205. A heat dissipation adjustment groove 208 is provided on the heat dissipation adjustment cylinder 207. The heat dissipation fan blades 204 are slidably installed in the heat dissipation adjustment groove 208. A heat dissipation adjustment nut 206 is threaded on the heat dissipation adjustment cylinder 207. The other end of the heat dissipation adjustment nut 206 is rotatably installed on the heat dissipation cylinder 205.

[0037] like Figures 1 to 14As shown, the heat dissipation part 2 is fixedly provided with a guide part 3 for energy storage, the guide part 3 comprising a guide disc 301, a guide nut 302, a guide counterweight ring one 303, a guide counterweight ring two 304, a guide pipe 305, a guide ring 306 and a guide cover 307; the guide disc 301 is fixedly arranged on the heat dissipation base 201, and the guide nut 302 is detachably arranged on the guide disc 301 and connected with the guide counterweight ring one 303 and the guide counterweight ring two 304. The guide disc 301 is provided with a vent hole, and the guide cover 307 for guiding the air flow direction is detachably arranged on one end of the guide disc 301 through a thread, the guide ring 306 is rotatably arranged on the guide cover 307, and the guide pipe 305 is fixedly arranged on the guide ring 306; the diameter of the guide pipe 305 can be set according to requirements, the guide pipe 305 is made of silicone rubber material, and a mesh protective sleeve made of copper is arranged outside the guide pipe 305.

[0038] As shown in the drawings, Figures 1 to 14 The working principle of the forced ventilation system for reducing the thermal decay of the EMB motor is as follows: the deflection direction and the deflection angle of the heat dissipation fan blade 204 are adjusted according to different heat dissipation requirements, specifically: the operator manually twists the heat dissipation adjusting nut 206, the heat dissipation adjusting nut 206 rotates to drive the heat dissipation adjusting cylinder 207 to slide on the heat dissipation cylinder 205 along the axial direction of the heat dissipation cylinder 205, at this time the heat dissipation adjusting groove 208 drives the heat dissipation fan blade 204 to rotate, when the angle of the heat dissipation fan blade 204 increases, the air area swept by the heat dissipation fan blade 204 in the rotation process will increase, more air is pushed by the heat dissipation fan blade 204, so that the air inlet amount is increased, and vice versa, the air inlet amount is reduced, and the adjustment of the deflection angle and direction of the heat dissipation fan blade 204 is completed.

[0039] After the deflection angle adjustment of the heat dissipation fan blade 204 is completed, the connecting seat 101 is fixedly installed on the outer surface of the hub through the mounting hole arranged thereon, the guide counterweight ring one 303 and the guide counterweight ring two 304 are fixed on the outer surface of the guide disc 301 through the guide nut 302, and the exhaust end of the guide pipe 305 is installed near the shell of the EMB motor, so that the air flowing through the guide pipe 305 can cool the motor.

[0040] After the automobile starts, the hub begins to rotate, and the hub rotation drives the connecting seat 101, the connecting disc 102, and the connecting ratchet 103 to rotate. The connecting ratchet 103 rotates through the heat dissipation ratchet teeth 202 to drive the heat dissipation base 201, the heat dissipation cylinder 205, the heat dissipation fan blade 204, the heat dissipation adjusting nut 206, the guide disc 301, the guide nut 302, the guide counterweight ring two 304, and the guide counterweight ring one 303 to rotate. In this process, when the heat dissipation base 201 and the heat dissipation cylinder 205 drive the heat dissipation fan blade 204 to rotate, the heat dissipation fan blade 204 inhales air from one end of the connecting part 1 and finally discharges it to the EMB motor through the guide pipe 305 end to cool the motor. The heat dissipation fan blade 204 inhales air at the same time, and the heat generated by the friction of the brake disc is taken away by the air to effectively cool the brake disc. The effective cooling of the brake disc and the EMB motor prevents the high temperature from causing the EMB motor to demagnetize, affects the output torque and power degradation, and causes the vehicle brake attenuation to increase the safety hazard.

[0041] When the automobile is in a stop state, the connecting seat 101, the connecting disc 102, and the connecting ratchet 103 are in a stop state at this time. Under the action of the inertia of the guide counterweight ring one 303 and the guide counterweight ring two 304, the guide counterweight ring one 303, the guide counterweight ring two 304, the guide disc 301, the guide nut 302, the heat dissipation base 201, the heat dissipation cylinder 205, the heat dissipation fan blade 204, the heat dissipation adjusting nut 206, the heat dissipation adjusting cylinder 207, and the heat dissipation adjusting groove 208 continue to rotate. When the heat dissipation fan blade 204 rotates, it continuously inhales air from one end of the connecting part 1 and finally discharges it to the EMB motor through the guide pipe 305 end to cool the motor. The heat dissipation fan blade 204 inhales air at the same time, and the heat generated by the friction of the brake disc is taken away by the air to effectively cool the brake disc. The effective cooling of the brake disc and the EMB motor realizes the effective cooling of the brake disc and the EMB motor after the automobile is temporarily stopped.

Claims

1. A forced ventilation system to reduce thermal decay of an EMB electric machine, characterized by: The utility model provides a wheel hub cooling device, including the connecting portion (1) connected with the wheel hub, the connecting portion (1) is provided with the heat dissipation part (2) for driving air flow, The connecting portion (1) includes a connecting seat (101) with a connecting disc (102) fixedly arranged thereon, a connecting ratchet (103) is arranged in the connecting disc (102), and the connecting ratchet (103) is engaged with the heat dissipation part (2) to drive the heat dissipation part (2) to rotate. The heat dissipation part (2) includes heat dissipation ratchet teeth (202) engaged with the connecting ratchet (103), the heat dissipation ratchet teeth (202) are rotatably arranged on a heat dissipation base (201), the heat dissipation ratchet teeth (202) are controlled in position by heat dissipation elastic sheets (203), the heat dissipation base (201) is fixedly provided with a heat dissipation cylinder (205), a plurality of heat dissipation fan blades (204) are rotatably arranged on the sidewall of the heat dissipation cylinder (205), the heat dissipation cylinder (205) is slidably sleeved with a heat dissipation adjusting cylinder (207), the heat dissipation adjusting cylinder (207) is provided with a heat dissipation adjusting groove (208), and the heat dissipation adjusting groove (208) is in sliding fit with the heat dissipation fan blades (204).

2. The forced ventilation system to reduce thermal decay of an EMB electric machine of claim 1, wherein: The heat dissipation adjusting cylinder (207) is provided with a heat dissipation adjusting nut (206) through threads, and the other end of the heat dissipation adjusting nut (206) is rotatably arranged on the heat dissipation cylinder (205).

3. The forced ventilation system to reduce thermal decay of an EMB electric machine of claim 1, wherein: The connecting seat (101) is provided with a plurality of mounting holes arranged in a circular array.

4. The forced ventilation system to reduce thermal decay of an EMB electric machine of claim 1, wherein: The heat dissipation part (2) is fixedly provided with a guide part (3) for storing energy, the guide part (3) includes a guide disc (301) fixedly arranged on the heat dissipation base (201), and the guide disc (301) is detachably provided with a guide counterweight ring one (303) and a guide counterweight ring two (304) through a guide nut (302).

5. A forced ventilation system to reduce thermal decay of an EMB electric machine according to claim 4, characterized in that: The guide disc (301) is provided with a vent hole, one end of the guide disc (301) is detachably provided with a guide cover (307) for guiding the air flow direction through threads, the guide cover (307) is rotatably provided with a guide ring (306), and the guide ring (306) is fixedly provided with a guide pipe (305).

6. A forced ventilation system to reduce thermal decay of an EMB electric machine according to claim 5, characterized in that: The guide pipe (305) is made of silicone rubber material, and the guide pipe (305) is sleeved with a mesh protective sleeve made of copper.

Images