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Pure electric vehicle single-axle double-motor drive system

A dual-motor drive, pure electric vehicle technology, applied in electric power units, power units, vehicle components, etc., can solve problems such as high control algorithm requirements and complex structure, and achieve improved transmission system efficiency, economy, and energy. Use efficient effects

Inactive Publication Date: 2019-01-11
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the original single-motor drive system, the wheel-side motor omits the mechanical differential device and uses an electronic differential. This structure is more complicated and has higher requirements on the control algorithm.

Method used

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  • Pure electric vehicle single-axle double-motor drive system

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Embodiment example

[0023] Implementation case: such as figure 1 As shown, the first motor 4 and the second motor 11 are dynamically coupled via the first gear set 6 and the third gear set 9 to drive the rear axle of the vehicle via the second gear set 7 and the differential 8; During brake recovery, the output current charges the battery pack 1 through the first motor controller 3, the second motor controller 12, and the high-voltage power distribution cabinet 2; one end of the first motor controller 3 and the second motor controller 12 are connected to The first motor 4 and the second motor 11 are connected, and the other end is connected to the high-voltage power distribution cabinet 2; the charging plug 14 is connected to an external power source during parking and charging, and the battery pack 1 is charged through the charger 13 and the high-voltage power distribution cabinet 2 .

[0024] During the driving process of the vehicle, its driving mode can be divided into: single-motor driving mod...

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Abstract

The invention relates to a pure electric vehicle single-axle double-motor drive system. The pure electric vehicle single-axle double-motor drive system is characterized in that two motors are coaxially arranged through respective clutches, and a shaft is located between a front axle and a rear axle of the vehicle; on the shaft, two motors are dynamically coupled via respective gear set and drive the rear axle of the vehicle via another gear set and a differential; the two motors are connected with a battery pack through a high-voltage distribution cabinet; the two motors are controlled to workindividually or together according to different vehicle load requirements. The pure electric vehicle single-axle double-motor drive system realizes the switching between different working modes, so that the two motors work in the respective high-efficiency areas, thus effectively improving the efficiency and economy of the drive system.

Description

Technical field [0001] The invention relates to a pure electric vehicle drive system, in particular to a pure electric vehicle single-axis dual-motor drive system. Background technique [0002] In recent years, facing the pressure of environmental pollution and energy depletion, the field of new energy vehicles has become a key development direction in the future. Due to the advantages of pure electric vehicles such as economy, environmental protection and low noise, pure electric vehicles have become the primary development direction of new energy vehicles. At present, the pure electric vehicle industry is still in its infancy, and the drive structure is mainly driven by a single motor. The single-motor drive system has the problems of short driving range and low motor efficiency. When the vehicle is cruising, the motor works in a low-load area, with low work efficiency and poor economy. In the case of limited battery development technology, it is necessary to improve the dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/02
Inventor 田韶鹏侯雪莹
Owner WUHAN UNIV OF TECH
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