Motor and speed changer integrated power assembly for battery electric vehicles

A pure electric vehicle and powertrain technology, applied in the direction of electric power devices, power devices, vehicle components, etc., can solve the problems of large shifting impact and cost increase, and achieve small shifting impact, low production cost, and overall structure compact effect

Inactive Publication Date: 2014-07-02
HEFEI UNIV OF TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

When the AMT structure is adopted, a synchronizer is required, and the shifting impact is relatively large at this time; while w

Method used

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  • Motor and speed changer integrated power assembly for battery electric vehicles
  • Motor and speed changer integrated power assembly for battery electric vehicles
  • Motor and speed changer integrated power assembly for battery electric vehicles

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[0019] Below in conjunction with the accompanying drawings, the present invention will be further described through embodiments.

[0020] see figure 1 , a powertrain that integrates the motor and transmission of a pure electric vehicle, including the motor, the transmission and the differential 13; the motor includes a stator 1, a rotor 2 and a rotor seat 3, and the stator 1 is located on the inner wall of the motor housing 4 , the rotor 2 is sleeved on the tubular rotor seat 3; the axial end of the rotor seat 3 is provided with a front row sun gear 5; the front row sun gear 5 is fixed at one end of the second hollow wheel shaft, and the other end of the second hollow wheel shaft passes through The splines are fixedly connected to the rotor base 3 , and the second hollow wheel shaft is coaxially sleeved on the first hollow wheel shaft on one side of the differential 13 . The inner wall of the motor housing 4 is also provided with a first electromagnetic brake 11 and a second ...

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Abstract

The invention relates to a motor and speed changer integrated power assembly for battery electric vehicles. The motor and speed changer integrated power assembly comprises a motor, a speed changer and a differential mechanism; the motor comprises a stator, a rotor and a rotor base, and the stator is located on the inner wall of a motor shell; a first electromagnetic brake and a second electromagnetic brake are further arranged on the inner wall of the motor shell, a gear ring is arranged on the first electromagnetic brake in a matched mode, and a planet carrier is arranged on the second electromagnetic brake in a matched mode; the planet carrier is further respectively provided with three front-row planet wheels and three back-row planet wheels; front-row sun wheels are arranged at one axial end of the rotor base; back-row sun wheels are fixedly connected with flanges on a shell of the differential mechanism through screws; one end of the differential mechanism is located in the tubular rotor base, and the other end of the differential mechanism is located in the motor shell. By means of the motor and speed changer integrated power assembly, two-gear shifting can be achieved through different combinations of the two electromagnetic brakes; meanwhile, the motor and speed changer integrated power assembly is compact in structure, small in size and low in weight, and meets the automobile light-weight principle.

Description

technical field [0001] The invention belongs to the technical field of pure electric vehicles, and in particular relates to a power assembly of pure electric vehicles. Background technique [0002] The current electric drive solutions of pure electric vehicles are usually matched by electric motors, reducers and differentials; due to the relatively low integration of this structure, the climbing ability, acceleration performance and overall vehicle efficiency of pure electric vehicles are all high. restricted. The use of 2-stage gear transmission can efficiently provide axle torque energy in a wide range of vehicle speeds, improve its climbing performance and vehicle efficiency, and extend the cruising range on a single charge. There are AMT structure and DCT structure commonly used in electric vehicle two-speed transmission. When the AMT structure is adopted, a synchronizer needs to be used, and the shift impact is larger at this time; while when the DCT structure is adop...

Claims

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Application Information

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IPC IPC(8): B60K17/16B60K17/08B60K1/00
Inventor 赵韩何李婷黄康陈祥夏公川朱晓慧张琰张楠
Owner HEFEI UNIV OF TECH
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