A high power density two-speed electric drive device for tracked vehicles with integrated design

Abstract

The invention discloses an integrated design high power density two-speed electric drive device for crawler vehicles, comprising a left two-speed transmission, a left drive motor, a right drive motor, a right two-speed transmission, a drive motor controller, a high-voltage line bundle. Among them, the left two-speed transmission, the left drive motor, the right drive motor, and the right two-speed transmission are coaxially arranged, and the drive motor controller is installed above the left two-speed transmission and the right two-speed transmission; the high-voltage wiring harness is respectively connected to the drive Motor controller and left drive motor, drive motor controller and right drive motor. The electric driving device of the present invention is a compact structure, with high power density, light overall weight, small space occupation of the power cabin, no complicated connecting pipelines, overall hoisting, convenient replacement, high allowable working speed, and long-term stable operation Good performance, simple and reliable sealing structure, etc.

Description

technical field [0001] The invention relates to an electric drive device for a vehicle, in particular to a high power density two-speed electric drive device for an integrated design tracked vehicle. Background technique [0002] The two-speed electric drive technology has the advantages of good power, low operating noise, wide speed regulation range, high energy conversion efficiency, high power transmission efficiency, braking energy recovery, and easy automatic control. The advantages of fast and stepless steering; at the same time, it does not depend on the increasingly depleted oil resources and adapts to the development requirements of future new energy vehicles; therefore, two-speed electric drive technology is an important development direction of future vehicle powertrain technology. [0003] The existing two-speed electric drive device for crawler vehicles based on dual independent drives consists of a left two-speed transmission, a left drive motor, a right drive ...

AI Technical Summary

Problems solved by technology

The existing two-speed electric drive system for tracked vehicles based on dual independent drives has the disadvantages of low integration, scattered layout, large space occupation, and chaotic electrical wiring harness; at the same time, because the drive motor is lubricated with grease, the bearing temperature is high when the drive motor runs at high speed, Poor reliability; the existing drive system has the disadvantage of low overall power density, and cannot meet the mobility requirements of large-tonnage vehicles under the condition of limited space in the power cabin

Images