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Two-motor and two-mode-coupling drive system of electric vehicle

A drive system, electric vehicle technology, applied in electric vehicles, motors, control drives, etc., can solve the problems of short service life of the main motor, excessive medium and high torque, and unreasonable use, etc., to achieve simple structure and improve power. performance, improve service life

Active Publication Date: 2017-07-14
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the structure adopts a coaxial arrangement, a large number of transmission gears are used, which makes the structure complicated and the volume larger
The auxiliary motor is used at low speed and small torque, and the main motor is used at medium and high speeds. It is easy to cause insufficient low-speed torque and excessive medium-high speed torque. The main and auxiliary motors are not used reasonably, and the service life of the main motor may be shortened. long

Method used

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  • Two-motor and two-mode-coupling drive system of electric vehicle
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  • Two-motor and two-mode-coupling drive system of electric vehicle

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Embodiment Construction

[0033] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0034] The invention provides a dual-motor dual-mode coupled electric vehicle drive system, such as figure 1 As shown, it includes motor (M1), motor (M2), clutch (C1), clutch (C2), clutch (C3), locker (L1), locker (L2), planetary gear mechanism. The dual motors are coaxially arranged, and are only connected to the transmission shaft through a single-row planetary gear mechanism, and the power is transmitted to the vehicle wheels through the transmission shaft. The motor (M1) is connected to the sun gear of the single-row planetary gear mechanism through the clutch (C1), the motor (M2) is connected to the sun gear through the clutch (C3), and the clutch (C2), and the motor (M2) is connected to the sun gear through the clutch (C3) The planet carriers of the single-row planetary gear mechanism are connected. There is a locking mechanism (L...

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Abstract

The invention relates to a two-motor and two-mode-coupling drive system of an electric vehicle comprising a first motor, a second motor, a first clutch, a second clutch, a third clutch, a first locking device, a second locking device, a simple planetary gear mechanism, an actuator control unit, a sensing signal acquisition unit, a torque signal calculating and processing unit and a vehicle state signal acquisition unit which are connected with the actuator control unit and a drive mechanism, wherein the actuator control unit determines a current running mode of the electric vehicle and carries out mode switching and power distribution through the sensing signal acquisition unit, the torque signal calculating and processing unit and the vehicle state signal acquisition unit; and the actuator control unit respectively drives the first motor, the second motor, the first clutch, the second clutch, the third clutch, the first locking device and the second locking device through the drive mechanism and drives a transmission shaft through the simple planetary gear mechanism, thereby driving wheels of the electric vehicle.

Description

technical field [0001] The invention relates to a dual-motor dual-mode coupled electric vehicle drive system. Background technique [0002] Traditionally, due to global air pollution and energy shortages, electric vehicles have attracted more and more attention and favor. The transmission form of the motor drive system on electric vehicles is mainly manifested as multi-motor independent drive and single-motor centralized drive. Vehicles independently driven by multiple motors are mainly driven by in-wheel motors and independently driven by wheel-side motors. The drive form of the hub motor can simplify the structure of the transmission system and facilitate the layout, but it is limited by the torque density of the drive motor and the integrated manufacturing level of the hub and the motor, and the technology is not yet mature; the independent drive form of the wheel motor is not compact in structure, heavy and bulky , the power density advantage is not obvious. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/02B60K17/04B60L15/20F16D48/06
CPCB60K1/02B60K17/04B60L15/2054B60L2220/42B60L2240/12B60L2240/421F16D48/06F16D2500/10412F16D2500/10431F16D2500/1064F16D2500/1087F16D2500/30412F16D2500/30415F16D2500/3108F16D2500/31426F16D2500/3144F16D2500/70484Y02T10/64Y02T10/72
Inventor 林歆悠魏申申吴超宇王黎明
Owner FUZHOU UNIV
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