Hybrid electric vehicle and slope stabilization control method and device thereof

A technology of a hybrid electric vehicle and a control method, which is applied in the directions of hybrid electric vehicles, power devices, control devices, etc., can solve the problems of judging conditions of unrestricted torque demand, etc., and achieve the effect of preventing slippage and ensuring driving safety.

Inactive Publication Date: 2019-04-09
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 electric vehicle and slope stabilization control method and device thereof
  • Hybrid electric vehicle and slope stabilization control method and device thereof
  • Hybrid electric vehicle and slope stabilization control method and device thereof

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Embodiment Construction

[0032] 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.

[0033] The hybrid electric vehicle and its slope stabilization control method and system according to the embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0034] figure 1 is a block diagram of a hybrid vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the hybrid electric vehicle 2000 includes: an engine 1 , a power motor 2 , a power battery 3 and an auxiliary motor 5 .

[0035] According to a specific embodiment of the present in...

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Abstract

The invention discloses a hybrid electric vehicle and a slope stabilization control method and device thereof. The hybrid electric vehicle comprises an engine, a power motor, a power battery, and an auxiliary motor connected with the engine, the power motor and the power battery. The engine outputs power to wheels of the hybrid electric vehicle through a clutch. The power motor is used for outputting driving force to the wheels of the hybrid electric vehicle, the auxiliary motor is driven by an engine to generate electricity, and the method comprises the steps that when the hybrid electric vehicle is located on a slope, if the power motor breaks down, whether the hybrid electric vehicle meets the slope stabilization control condition or not is judged; if the hybrid electric vehicle meets the slope stabilization control condition, the hybrid electric vehicle is controlled to enter an auxiliary motor slope stabilization control mode, the auxiliary motor is controlled to output torque tothe engine, reverse force is provided for the wheels through the engine, the hybrid electric vehicle is subjected to slope stabilization control, and therefore the hybrid electric vehicle can be prevented from sliding on the slope, and driving safety can be guaranteed.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a slope stabilization control method for a hybrid electric vehicle, a slope stabilization control device for a hybrid electric vehicle and a hybrid electric vehicle. Background technique [0002] In a hybrid car, the BSG (Belt Driven Starter Generator, belt drive start / power generation) motor has two functions of power assist and power generation. When the car is running normally, the BSG motor is used as a generator to generate power. When the car stops for a short time, the engine has an idle speed At the same time, the BSG motor is used as an auxiliary power source, which 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 conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/36B60K6/28B60K6/445B60K6/50B60W30/18B60W10/08B60W10/06
CPCB60K6/28B60K6/36B60K6/445B60K6/50B60W10/06B60W10/08B60W30/18054B60W2510/08B60W2510/10B60W2510/244B60W2520/10B60W2552/15B60W2710/06B60W2710/083Y02T10/62
Inventor 王春生许伯良罗永官
Owner BYD CO LTD
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