Powertrain and vehicle having same

A power transmission system and vehicle technology, applied in the field of power transmission system, can solve the problems of insufficient power and passing capacity of the whole vehicle, low drive transmission efficiency, low power generation efficiency, etc., to improve the passability and escape ability, and enrich the driving mode , The effect of high transmission efficiency
CN108016281BActive Publication Date: 2020-02-21BYD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BYD CO LTD
Publication Date
2020-02-21

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Abstract

Disclosed are a power train and a vehicle having same. The power train comprises: a power source (100); a first motor-generator unit (300); a system power output portion (401); and a mode switching device (402), the mode switching device (402) comprising: an input portion (4020), a first switching portion, a second switching portion and an output portion (4022). The output portion (4022) is connected to an input end of the system power output portion (401). The input portion (4020) is adapted to output the power from at least one of the power source (100) and the first motor-generator unit (300). The input portion (4020) is fixedly connected to the first switching portion. The output portion (4022) selectively engages with the first switching portion (4021a) or the second switching portion (4021b). The output portion (4022) engages with the second switching portion, such that after the rotation speed output by the input portion (4020) is reduced by successively passing through the first switching portion and the second switching portion before being output to the input end of the system power output portion (401). In this way, driving modes of a vehicle can be enriched, and the vehicle can be adapted to different road conditions.
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Description

technical field

[0001] The present invention relates to the technical field of vehicles, in particular to a power transmission system of a vehicle and a vehicle with the power transmission system. Background technique

[0002] With the continuous consumption of energy, the development and utilization of new energy vehicles has gradually become a trend. As one of the new energy vehicles, a hybrid vehicle is driven by an engine and / or an electric motor, and has multiple modes, which can improve transmission efficiency and fuel economy.

[0003] However, in the related technologies known to the inventor, some hybrid electric vehicles have few drive modes and low drive transmission efficiency, which cannot meet the requirements of the vehicle to adapt to various road conditions, especially after the hybrid electric vehicle is powered (when the battery power is insufficient). The power and passing capacity of the whole vehicle are insufficient. Moreover, in order to realize the...

Claims

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