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Hybrid vehicle, and power system and vehicle control method thereof

A technology of hybrid electric vehicles and power systems, applied in hybrid electric vehicles, motor vehicles, power plants, etc., can solve problems such as unrestricted torque demand judgment conditions, and achieve the effect of improving driving experience

Active Publication Date: 2019-04-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above technologies, the judgment conditions for the sudden increase of the torque demand are not limited, and the basis for the rapid conversion of the BSG motor in case of an emergency

Method used

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  • Hybrid vehicle, and power system and vehicle control method thereof
  • Hybrid vehicle, and power system and vehicle control method thereof
  • Hybrid vehicle, and power system and vehicle control method thereof

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0023] A hybrid electric vehicle, its power system, and a vehicle control method for a hybrid electric vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0024] figure 1 is a block diagram of a power system of a hybrid vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the power system 100 of the hybrid electric vehicle includes: an engine 1 , a power motor 2 , an auxiliary motor 5 , an acquisition unit 101 and a...

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Abstract

The invention discloses a hybrid vehicle, and a power system and vehicle control method thereof. The power system includes an engine, a power motor, an auxiliary motor connected to the engine, a collection unit and a control module; the engine outputs power to a first wheel and second wheel of the hybrid vehicle through a clutch; the power motor is used for outputting driving force to a third wheel and fourth wheel of the hybrid vehicle; the collection unit is used for collecting the running parameters of the hybrid vehicle; and the control module judges the current working condition of the hybrid vehicle according to the running parameters, and controls whole vehicle torque to perform distribution among the auxiliary motor, the engine and the power motor according to the current working condition of the hybrid vehicle. Thus, that the auxiliary motor reversely outputs assisting force to the engine can be realized, the slipping of the hybrid vehicle can be avoided, and driving experience of users can be improved.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a power system of a hybrid electric vehicle, a hybrid electric vehicle and a vehicle control method for a hybrid electric vehicle. Background technique [0002] In a hybrid vehicle, the BSG (Belt Driven Starter Generator, belt drive start / power generation) motor has two functions of starting and generating. When the car is running normally, the BSG motor is used as a generator to generate electricity. When the car stops for a short time, the engine has an idle stop function. At the same time, as an auxiliary power source, the BSG motor can provide assistance when the driver's torque demand is large, and improve the vehicle's dynamic performance. [0003] In related technologies, under normal working conditions, the BSG motor only provides the function of power generation and does not provide power assistance. However, if abnormal working conditions suddenly appe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/10B60W20/20B60W10/06B60W10/08B60K6/44
CPCB60K6/44B60W10/06B60W10/08B60W20/10B60W20/20B60W2520/10B60W2520/28B60W2710/0666B60W2710/083Y02T10/62
Inventor 杨冬生许伯良郭治昊罗永官
Owner BYD CO LTD