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Charging method for hybrid power system

A technology of hybrid power system and charging method, which is applied in the direction of secondary battery charging/discharging, electric vehicles, electric traction, etc., can solve the problem of not comprehensively considering the power consumption of the whole vehicle, the efficiency of the motor, the life of the electric energy storage system, etc., and achieve easy implementation , low cost, good comprehensive effect

Inactive Publication Date: 2013-10-30
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The charging of the existing hybrid power system is mostly based on the consideration of the SOC range of the battery, and does not comprehensively consider the power consumption of the vehicle, the efficiency of the motor, and the life of the electric energy storage system.

Method used

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  • Charging method for hybrid power system
  • Charging method for hybrid power system
  • Charging method for hybrid power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0039] (1) Determine whether the SOC of the electric energy storage system is in the normal range. When the SOC of the SOC fluctuates between the upper limit and the lower limit of the normal range, it is considered that the current SOC is in the normal range; when the SOC is far lower than When the lower limit of the normal range (for example, 20% lower than the set SOC lower limit), it is considered that the current state of charge SOC is too low, and enter step (8);

[0040] (2) When the state of charge is in the normal range, judge whether it is the best charging time according to the engine running state and the state of charge SOC of the electric energy storage system. In this way, it is possible to maximize engine efficiency and maintain a narrow SOC fluctuation (eg, between 60% and 75%).

[0041] (3) Determine the charging power range, the charging power shall not be less than the maximum continuous power consumption of the vehicle low-voltage power system; this power ...

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Abstract

The invention provides a charging method for a hybrid power system. By the aid of the charging method, SOC (stage of charge) of an electric energy storage system of the hybrid power system narrowly fluctuates in a reasonable range, the dynamic property of a vehicle is guaranteed, simultaneously, efficiency of the hybrid power system is optimized, economical efficiency of fuel is improved, and the service life of the electric energy storage system is prolonged. If the charging control method is applied, consequent remarkable effects of energy conservation and emission reduction can produce enormous economical and social benefits.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, and in particular relates to a method for controlling and calibrating the charging function of a hybrid electric system. Background technique [0002] Oil and gas hybrid vehicles, whether they are moderate hybrids (referred to as medium hybrids, including Honda Civic 144 V or 158 V Integrated Motor Assist, Changan Zhixiang 144 V system, and GM Buick Regal 120V BAS II), or strong hybrids ( Referred to as strong hybrid, including the third generation of Toyota Prius, the US general dual-mode system), depending on the working conditions and control strategies, it is necessary to charge the electric energy storage system with a certain torque or power at a certain timing to make the SOC (Stage of Charge, state of charge) fluctuates within a reasonable range. [0003] Charging when the SOC is too high (close to the full state) will have a negative impact on the efficiency and life of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18H01M10/44
CPCY02E60/12Y02T10/7005Y02T10/7044Y02E60/10Y02T10/70
Inventor 栾云飞杨正军刘杰李宗华李荣华
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD