Power generation control method and system of hybrid vehicle

A hybrid vehicle, power generation control technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve problems such as low control accuracy, overcharging of power batteries, and difficulty in implementation, achieving strong controllability and improved performance. The effect of controlling precision

Active Publication Date: 2018-07-27
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the way of generating electricity with uniform power will lead to energy waste when the demand is low and high power, and it will cause overheating of the engine and overcharging of the power battery due to the large power generation
The way to divide the power generation level takes more factors such

Method used

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  • Power generation control method and system of hybrid vehicle
  • Power generation control method and system of hybrid vehicle
  • Power generation control method and system of hybrid vehicle

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Experimental program
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Embodiment Construction

[0042] figure 1 A schematic flowchart of a method for controlling power generation of a hybrid vehicle according to an embodiment of the present invention is shown. like figure 1 As shown, the power generation control method includes:

[0043] Step S100, detecting the SOC value of the power battery of the hybrid vehicle;

[0044] Step S200, compare the SOC value with a preset power threshold, and enter an idle power generation mode when the SOC value is less than or equal to the preset power threshold; in the idle power generation mode, the hybrid vehicle The engine generates electricity to charge the power battery, so as to supply power to the high-voltage accessories of the hybrid vehicle through the power battery charging, and the power generation power level of the engine is adjusted according to the power of the high-voltage accessories. The power generation power level corresponds to a preset power generation power.

[0045] According to the solution of the embodimen...

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Abstract

The invention provides a power generation control method and system of a hybrid vehicle. The method includes the following steps that a SOC value of a power battery of the hybrid vehicle is detcted; the SOC value is compared with a preset power threshold, and an idling power generation mode is entered when the SOC value is less than or equal to the preset power threshold; in the idling power generation mode, an engine of the hybrid vehicle generates electricity to charge the power battery, so that high-voltage accessories of the hybrid vehicle is supplied with the electricity by charging the power battery; and the generation power level of the engine is adjusted according to the power of the high-voltage accessories, and each generation power level corresponds to preset generation power. According to the power generation control method and system of the hybrid vehicle, the generation power level of the engine is adjusted according to the power of the high-voltage accessories, so that the power demand of the high-voltage accessories can be met, and the power battery can be charged; and the battery capacity problem under the idling condition is considered, the power consumption of the high-voltage accessories is considered, and the control accuracy under the condition is improved.

Description

technical field [0001] The present invention relates to the technical field of engine power generation of a hybrid vehicle, in particular to a power generation control method and system for a hybrid vehicle. Background technique [0002] When the power battery of a hybrid vehicle is low and the vehicle is in P or N gear, the power battery is at risk of over-discharge. In order to prevent the power battery from being over-discharged, the engine is usually started to charge the power battery, that is, idling to generate electricity. [0003] In the prior art, the engine will use a unified power to generate power during the power generation process, or perform power generation classification. However, the method of generating electricity with a unified power will lead to waste of energy when the power is low and high power, and the engine will be overheated and the power battery will be overcharged due to the large generated power. The method of dividing the power generation ...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W10/08
CPCB60W10/08B60W20/00B60W2510/242
Inventor 林潇陈帅曹江张剑锋汪巅牛珍吉姜博杨超群尹兴起白小劲
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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