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Wheel hub drive system

A wheel hub drive and rim technology, applied in the field of vehicles, can solve the problems of low transmission efficiency, complex structure, and many transmission components, and achieve the effect of high transmission efficiency, simple structure, and large transmission ratio

Pending Publication Date: 2021-01-22
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve a larger transmission ratio, the hub drive system also has many transmission components, complex structure, and low transmission efficiency.

Method used

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Examples

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Embodiment Construction

[0042] Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, and are not intended to exhaust all possible ways of the present invention, nor are they intended to limit the scope of the present invention.

[0043] Unless otherwise specified, refer to figure 1 , A represents the axial direction of the wheel hub drive system, and the axial direction A is consistent with the axial direction of the motor E in the wheel hub drive system; R represents the radial direction of the wheel hub drive system, and the radial direction R is consistent with the diameter of the motor E in the wheel hub drive system to the same.

[0044] The hub drive system according to the present invention mainly includes a housing 10 , a motor E, a rotor support F, a two-stage planetary gear set, a hub beari...

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Abstract

The invention provides a wheel hub driving system which comprises a shell (10), a motor (E) and two planetary gear sets, the first planetary gear set comprises a first-stage sun gear (GS1), a first-stage planet carrier (GC1) and a first-stage gear ring (GR1), and the second planetary gear set comprises a second-stage sun gear (GS2), a second-stage planet carrier (GC2) and a second-stage gear ring(GR2). The first-stage sun gear (GS1) is connected to a rotor (ER) of the electric motor (E) in a non-rotational manner, the second-stage sun gear (GS2) is connected to the shell (10) in a non-rotational manner, the first-stage planet carrier (GC1) is connected to the second-stage ring gear (GR2) in a non-rotational manner, the first-stage ring gear (GR1) is connected to the second-stage planet carrier (GC2) in a non-rotational manner, and therefore, the power of the motor (E) can be transmitted to a rim. The wheel hub driving system is simple in structure, short in transmission chain, large in transmission ratio and high in transmission efficiency.

Description

technical field [0001] The invention relates to the field of vehicles, and in particular to a wheel hub drive system of a new energy vehicle. Background technique [0002] For electric-driven vehicles, especially heavy-duty vehicles, the drive methods can be divided into central motor drive and hub motor drive, for example. [0003] For vehicles driven by a central motor, the drive system includes a central drive motor, a clutch, and a reducer that can provide two or three gear ratios. Such a drive system includes many transmission components, a long transmission chain, and a large system weight, which will lead to large energy loss and low transmission efficiency during power transmission. [0004] For a vehicle driven by an in-wheel motor, especially a heavy-duty vehicle, both the drive assembly and the brake assembly are usually arranged on the inner side of the rim. The drive assembly includes a drive motor, a planetary gear reducer (usually with a two-stage planetary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K7/00B60K17/04
CPCB60K7/0007B60K17/046
Inventor 史时文
Owner SCHAEFFLER TECH AG & CO KG
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