Charging management method and system for vehicle-mounted low-voltage storage battery

Abstract

The invention discloses a charging management method and system for a vehicle-mounted low-voltage storage battery. The method comprises the steps that when voltage transformation control needs to be conducted on vehicle voltage, vehicle speed planning information of a current control period is obtained, and a target gear sequence of the current control period is calculated based on the vehicle speed planning information of the current control period; then, vehicle parameter information is obtained, and an engine rotating speed prediction sequence of the current control period is calculated based on the vehicle parameter information and the target gear sequence of the current control period; and finally, the target voltage optimization sequence of the current control period is acquired, and the target optimization voltage in the target voltage optimization sequence of the current control period is used as a target voltage decision value of the current control period. Herein, the characteristic that the storage battery has a certain depth of chargeable and dischargeable capacity is fully utilized, so that charging and discharging management can be carried out on the storage battery in advance by combining traffic and road conditions, the energy use efficiency is improved, the storage battery is prevented from being over-discharged, and the service life of the storage battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a charging management method and system for a vehicle-mounted low-voltage storage battery. Background technique [0002] In recent years, with the increasingly stringent emission regulations, more and more attention has been paid to energy conservation and environmental protection, and major automobile manufacturers have focused on research and development of vehicle fuel-saving technologies; in order to maximize the fuel-saving potential of vehicles, vehicle low-voltage systems are increasingly Pay attention, mainly through the voltage transformation control of the target voltage of the generator or the voltage of other on-board charging equipment, and comprehensively consider the vehicle status information, battery status information, etc., aiming to realize the work of the lead-acid battery in a partially charged state. [0003] Publication number CN201811056485...

AI Technical Summary

Problems solved by technology

Although the traditional method can obtain a certain fuel-saving control effect, it lacks the comprehensive consideration of the road condition information, so that the traditional battery charging method only makes decisions based on the current state of the vehicle, and has poor adaptability to the actual road conditions and traffic conditions. The battery power deviates from the lower limit of the preset power window under complex road conditions

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