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A heavy-duty electric vehicle wheel power and braking system assembly

A technology for electric vehicles and braking systems, which is applied in the direction of brake types, brake components, axial brakes, etc., which can solve the problems of large impact on brake performance, easy heat generation of brakes, and inconvenient vehicle design, so as to save installation space , good braking performance and easy maintenance

Active Publication Date: 2022-01-04
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a heavy-duty electric vehicle wheel power and braking system assembly and its heat dissipation method to solve the problem that the existing brake occupies a large space outside the vehicle and is not convenient for vehicle design. Brake performance is greatly affected by the environment due to the exposed disc, and the problem that the brake is prone to heat

Method used

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  • A heavy-duty electric vehicle wheel power and braking system assembly
  • A heavy-duty electric vehicle wheel power and braking system assembly

Examples

Experimental program
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Effect test

Embodiment 2

[0087] This embodiment provides a braking method for the hub full-disc brake described in Embodiment 1, and the specific steps include:

[0088] When braking, at first the motor / generator integrated machine 27 is made to work in the generator mode, and the motor / generator integrated machine 27 produces a braking torque. The mechanical energy of the vehicle is converted into electrical energy and stored in the battery; after the vehicle speed is reduced, it is braked by the full disc brake.

[0089] When the brake is applied, the controlled high-pressure gas enters the cylinder of the pressurizing unit 5 through the cylinder valve 24 from the cylinder air channel 23 . The cylinder pushes the cylinder pressure plate 22 to move toward one side of the brake dynamic friction plate 12 . The cylinder pressure plate 22 drives the static friction plate 11 to contact with the dynamic friction plate 12 and squeeze each other to generate braking torque. The braking torque is transmitted...

Embodiment 3

[0095] This embodiment provides a heat dissipation method for the wheel power and braking system assembly of the heavy-duty electric vehicle in Embodiment 1, including the following steps:

[0096] Step S1: delivering cooling gas to the interior of the brake assembly 4 through the cylinder air passage 23;

[0097] Step S2: When the air pressure in the air passage 23 of the cylinder reaches the opening pressure of the overflow valve 28, the air inlet passage 32 for cooling is communicated with the air passage 23 of the cylinder;

[0098] Step S3: The cooling air flows sequentially through the cylinder air passage 23, the overflow valve 28, the heat dissipation air inlet 32 ​​and the air intake hole 34 and enters the interior of the brake assembly 4, and the high-temperature air flow inside the brake assembly 4 passes through the exhaust hole 35 and the heat dissipation The exhaust channel 33 flows out of the brake assembly 4 and takes away the heat generated by the friction bet...

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Abstract

The invention relates to a wheel power and braking system assembly of a heavy-duty electric vehicle and a heat dissipation method thereof, belonging to the field of vehicle brakes, and solving the problems of poor braking effect and heat generation of the heavy-duty vehicle in the prior art. The invention includes: a brake assembly, a pressurizing unit and a rotary sealing unit; the brake assembly includes: a dynamic friction plate and a static friction plate; the dynamic friction plate is fixedly connected with the hub of the wheel-side reducer, and the hub of the wheel-side reducer rotates synchronously with the wheel; the static friction plate Under the driving action of the pressurization unit, it contacts or separates from the moving friction plate; through the electric / generator integrated machine in the power generation mode, the braking force is decelerated and the energy is recovered, and then the brake is realized through the brake assembly, which is equipped with a heat dissipation air inlet And the heat dissipation exhaust passage, the heat dissipation intake passage and the heat dissipation exhaust passage are used to discharge the high-temperature gas inside the brake assembly to dissipate heat from the brake assembly. The invention realizes rapid braking of the wheels and effective heat dissipation of the brakes.

Description

technical field [0001] The invention relates to the technical field of vehicle brakes, in particular to a wheel power and braking system assembly of a heavy-duty electric vehicle. Background technique [0002] In the early 1920s, disc brakes were introduced, but it was not until the late 1930s that they were gradually applied to the braking of trains, tanks and aircraft. Due to the progress of manufacturing technology and the continuous improvement of people's awareness, the advantages of disc brakes are gradually recognized by automobile designers. At present, disc brakes have been widely used in cars and various medium and heavy vehicles. [0003] Analyzed from the market prospect, disc brakes, as an alternative product to drum brakes, have a large market demand. With the continuous development of automobile technology, low-chassis vehicles based on humanized design, air spring suspension systems based on riding comfort, and electronic systems such as ABS and ESP based o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D55/36F16D65/14F16D65/847F16D121/04
CPCF16D55/36F16D65/14F16D65/847F16D2121/04
Inventor 李麟吕家乐金子微于洋
Owner NORTHEAST FORESTRY UNIVERSITY
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