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Control system and control method for hybrid electric vehicle

A hybrid electric vehicle and control system technology, applied in the direction of hybrid electric vehicles, motor vehicles, power plants, etc., can solve the problems that the proportion is not high, and it is not conducive to reducing emissions and fuel consumption in urban working conditions, so as to improve driving pleasure, Reduce the risk of roughness and reduce the effect of driving noise

Active Publication Date: 2017-08-04
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 for hybrid electric vehicle
  • Control system and control method for hybrid electric vehicle
  • Control system and control method for hybrid electric vehicle

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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Abstract

The invention discloses a control system and a control method of a hybrid electric vehicle, wherein the control system includes: a transmission device; an engine power subsystem; a motor power subsystem; a controller, and the controller controls the engine power subsystem and the motor power subsystem To control the hybrid vehicle to enter the corresponding working mode, and when the SOC of the power battery is less than or equal to the first power threshold, the maximum allowable discharge power of the power battery is less than or equal to the first power threshold or the current slope signal detected by the hybrid vehicle is greater than or equal to the upper limit of the slope When the threshold is reached, the controller controls the hybrid electric vehicle to switch from pure electric mode to hybrid electric mode. The engine power subsystem and the motor power subsystem in the control system are connected in parallel, and the economic performance is greatly improved under the premise of ensuring the power and driving range of the whole vehicle, and the phenomenon of frequent start and stop is avoided, and the life of the starter is improved. , reducing driving noise 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 Patents(China)
IPC IPC(8): B60K6/48B60W20/10B60W30/182
CPCB60W10/06B60W10/08B60W30/182B60W30/1882B60W2510/244B60W20/10B60W20/40Y02T10/84Y10S903/93Y02T10/40Y02T10/62B60W20/13B60W20/15B60W10/26B60W2710/0666B60W2710/0677B60W2710/086B60W2710/244
Inventor 陈昊廉玉波
Owner BYD CO LTD
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