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A wheel hub motor drive system with an outer rotor motor integrated with a drum brake

A technology of external rotor motor and drum brake, which is applied in the direction of electric components, magnetic circuit rotating parts, electromechanical devices, etc., can solve the problems of insufficient heat dissipation performance, achieve the effect of novel structure, good heat dissipation, and reduce the cost of the whole vehicle

Active Publication Date: 2019-01-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the patent has a drum brake in the motor, there are deficiencies in heat dissipation performance

Method used

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  • A wheel hub motor drive system with an outer rotor motor integrated with a drum brake
  • A wheel hub motor drive system with an outer rotor motor integrated with a drum brake

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Embodiment

[0022] The present invention is an outer rotor motor integrated drum brake hub motor drive system that integrates the friction brake together with the stator and rotor of the motor into the rim space. At the same time, the internal space of the stator integrates the drum brake. It has a novel structure, small space occupation, and low cost. The cost of the vehicle; the heat dissipation plate can be integrated with the brake drum, which needs to meet certain structural strength requirements, and has good thermal conductivity, which can diffuse the brake heat into the air; the rotor support plate needs to meet a certain structural strength and have high heat The characteristic of resistance is to isolate the heat of the brake drum; the heat dissipation plate assists the supporting plate to support the rotor. The heat insulation design of the rotor support plate and the heat conduction design of the heat dissipation plate enable the heat generated by the stator and the frictional h...

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Abstract

The present invention relates to a hub motor drive system of an external rotor motor integrated drum-type brake. The system comprises an external rotor motor, a drum-type brake and a hub. The external rotor motor and the drum-type brake are integrated in the hub. The drum-type brake is integrated inside a stator. The system further comprises a cooling board and a rotor support board. The external rotor motor comprises a rotor assembly and a stator assembly. The drum-type brake comprises a brake drum and a brake bottom board. A brake shoe is disposed in the brake drum. The cooling board and the brake drum are integrated. The rotor support board, the brake drum and the hub are fixedly connected outside the rotor assembly sequentially. The brake bottom board is fixedly connected outside the stator assembly. Compared with the prior art, the hub motor drive system had the advantages that the drum-type brake is integrated inside the stator, so that the structure is novel; the cooling board and the brake drum are integrated, thereby facilitating heat conduction; and the thermal insulation design of the support board helps heat dissipation of the cooling board.

Description

Technical field [0001] The invention relates to the field of electric vehicle hub motor drive, in particular to a hub motor drive system with an outer rotor motor integrated drum brake. Background technique [0002] Compared with traditional cars, the advantages of electric cars in energy saving and environmental protection make them the mainstream of future development in the automotive field. According to the structure of the powertrain, electric vehicles can be divided into two types: centralized drive and distributed wheel drive. The main structural feature of distributed wheel drive electric vehicles is that the drive motor is directly installed in or near the drive wheels. It has outstanding advantages such as short drive chain, high efficiency and compactness. The in-wheel motor drive system is mainly divided into two types according to the rotor type of the motor: inner rotor type and outer rotor type. The outer rotor type uses a low-speed rotor motor without a reductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/102H02K9/22H02K1/28H02K3/24
CPCH02K1/28H02K3/24H02K7/102H02K9/22
Inventor 张立军孟德建王心坚卓桂荣陈辛波余卓平王威
Owner TONGJI UNIV