Control system and control method of hybrid electrical vehicle (HEV)

A hybrid electric vehicle and control system technology, applied in the field of hybrid electric vehicle control and hybrid electric vehicle control system, can solve the problems that are not conducive to reducing emissions and fuel consumption in urban working conditions, and the proportion is not high, so as to reduce the unevenness Sexual risk, improvement of driving pleasure, and effect of economic performance improvement

Active Publication Date: 2015-03-18
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the above three factors, the proportion of EV mode in the use of hybrid electric vehicles is not high, and it is easy to switch to HEV mode, which is not conducive to reducing emissions and fuel consumption in urban conditions.

Method used

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  • Control system and control method of hybrid electrical vehicle (HEV)
  • Control system and control method of hybrid electrical vehicle (HEV)
  • Control system and control method of hybrid electrical vehicle (HEV)

Examples

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Embodiment Construction

[0031] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0032] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate ...

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PUM

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Abstract

A hybrid electrical vehicle (HEV) control system and method, the control system comprising a transmission device (10), an engine power subsystem (20), a motor power subsystem (30) and a controller (40); the controller (40) enables the HEV to enter a corresponding working mode by controlling the engine power subsystem (20) and the motor power subsystem (30); if the SOC of a power battery is below or equal to a first electric quantity threshold, and the maximum allowable discharge power of the power battery is below or equal to a first power threshold, or a current gradient signal detected by the HEV is above or equal to a gradient upper threshold, then the controller (40) enables the HEV to switch from an electrical vehicle (EV) mode to a hybrid power mode. Being connected in parallel, the engine power subsystem and the motor power subsystem in the control system greatly improve economic performance while ensuring the overall dynamic property and the driving range, and avoid frequent start and stop, thus extending the service life of a starter, reducing noise during vehicle travel, and improving driving comfort.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a control system of a hybrid electric vehicle and a control method of the hybrid electric vehicle. Background technique [0002] Hybrid Electrical Vehicle (HEV) refers to a vehicle that is equipped with two power sources at the same time, that is, a thermal power source (generated by a traditional gasoline engine or a diesel engine) and an electric power source (generated by a battery and a motor). By using electric motors on hybrid electric vehicles, the power system can be flexibly adjusted according to the actual operating conditions of the vehicle, while the engine keeps working in the area with the best overall performance, thereby reducing fuel consumption and emissions. [0003] Some of the existing hybrid vehicles use a hybrid hybrid system, which is characterized in that the internal combustion engine system and the motor drive system each have a set of mechanical tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/48B60W20/00B60W30/182
CPCB60W20/00B60W10/10B60W10/06B60W10/04B60W10/08B60W30/182B60W30/1882B60W2510/244B60W20/10B60W20/40Y02T10/84Y10S903/93Y02T10/40Y02T10/62B60W20/13B60W20/15B60W10/26B60W2710/0666B60W2710/0677B60W2710/086B60W2710/244
Inventor 陈昊阮鸥
Owner BYD CO LTD
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