Transmission mechanism, range extending device and range extending system for electric vehicle and electric vehicle

CN122107083APending Publication Date: 2026-05-29CHAFA FRIEDRICH SCHAFFEN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHAFA FRIEDRICH SCHAFFEN CO LTD
Filing Date
2024-11-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing electric vehicle range extender systems are complex in structure, occupy a large space, and have inflexible direct power connection between the internal combustion engine and generator, resulting in low transmission efficiency.

Method used

It adopts a transmission mechanism including a first input shaft, a second input shaft, a first clutch, a reduction device, a differential, an intermediate shaft, an output shaft, and a clutch. Through gear meshing and clutch design, it achieves power coupling and deceleration, combined with the power output of a permanent magnet synchronous motor and an internal combustion engine.

Benefits of technology

It achieves a compact and space-saving transmission mechanism, improves the utilization of interior space, and can quickly disconnect power transmission, thus reducing manufacturing costs.

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    Figure CN122107083A_ABST
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Abstract

The application provides a transmission mechanism, a range extending device and a range extending system for an electric vehicle and the electric vehicle. The transmission mechanism comprises a first input shaft (10) and a second input shaft (12), a first clutch (2) and a second rotating part (22), a reduction device (3) comprising a first input gear (32) and a ring gear (33), the ring gear having inner teeth and outer teeth, the first input gear being connected to the second input shaft and engaging with the inner teeth and the ring gear being connected to the first clutch, a differential (7), an intermediate shaft, first and second intermediate gears arranged on the intermediate shaft, two output shafts (71), one end of each output shaft being power-connected with the differential, and a second clutch (6) arranged between the first intermediate gear and the other end of each output shaft opposite to the one end in a power transmission path of the transmission mechanism.
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