Single battery control system of vehicular power supply

Abstract

The invention provides a new thought about single battery control in vehicular power supply management and uses a novel method. The front end of a single battery of a series battery pack is provided with a single-pole double-throw relay. When a battery state detection part of the system detects that one single battery is in over-charge or over-discharge, the relay acts so that the single battery is open-circuit and exits a loop, and other normal batteries continue to work and are not influenced.

Description

technical field [0001] The invention belongs to the field of power management system control, in particular to a control system of a vehicle power supply battery. Background technique [0002] As a product of modern human civilization, automobiles not only bring convenience and comfort to human life, but also have an inescapable responsibility for the deterioration of the natural environment. Cars emit harmful gases into the atmosphere every year, accounting for more than 60% of the total air pollution. Today, with the continuous improvement of human life quality, the urgent need to save the natural environment on which human beings depend has posed a severe challenge to the development of the automobile industry. The emergence of gasoline-electric hybrid vehicles is gradually improving this situation. This kind of vehicle has two kinds of energy for starting. It combines the internal combustion engine, electric motor and battery pack with a certain capacity through an advan...

AI Technical Summary

Problems solved by technology

The vehicle-mounted power battery pack is generally composed of multiple large-capacity single batteries connected in series, but its performance reliability and life have become the bottleneck of the development of vehicle power management. The reasons can be summarized in two points: 1. Due to the Due to uneven material during the process and differences in battery temperature and life during use, there must be inconsistencies in parameters such as internal resistance, terminal voltage, and capacity between batteries. 2. Even if the performance of a single battery is excellent, the quality is due to The inconsistency of the initial state when combined and packaged will lead to a sharp decline in the overall characteristics of the battery pack and accelerated damage to some batteries, reducing the use level of the battery pack, seriously affecting the performance of hybrid electric vehicles, and endangering the safety of hybrid electric vehicles

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