Detection apparatus for surplus capacity of electric locomotive storage battery

Abstract

The invention provides a detection apparatus for a surplus capacity of an electric locomotive storage battery. The detection apparatus is composed of a current acquisition unit, a voltage acquisition unit, a storage battery sampling device and a storage battery controller. A corresponding relation between an internal resistance value of a single storage battery in an internal resistance changing section and a surplus capacity of the single storage battery in the storage battery pack is prestored in the storage battery controller. According to the invention, when the electric locomotive runs and the storage battery pack is discharging, voltages and currents all the single storage batteries are collected; calculation is carried out to obtain internal resistance values of all the single storage batteries; and surplus capacities of all the single storage batteries are searched in the corresponding relation between the internal resistance value and the surplus capacity of the single storage battery. Therefore, detection of the surplus capacity of the storage battery of the electric locomotive is realized; accurate data can be provided for daily repairing and maintenance of the electric locomotive storage battery; phenomena of over charging and over discharging of the electric locomotive storage battery can be prevented; and thus the service life of the electric locomotive storage battery is prolonged.

Description

Technical field [0001] The present invention relates to the technical field of electric locomotive batteries, and more specifically, to a detection device for the remaining capacity of electric locomotive batteries. Background technique [0002] The electric locomotive battery is an important part of the DC power supply system of the electric locomotive. As a backup power source for the DC power supply, it is mainly responsible for the power supply interruption caused by the electric locomotive in the lowered bow state, when the pantograph is off-line or during the movement. Provide a stable, safe and reliable power supply guarantee for the start, control system, monitoring system and communication system of electric locomotives, and ensure the normal operation of important equipment on electric locomotives. [0003] Commonly used battery charging devices on electric locomotives generally perform equalizing charging and floating charging management for electric locomotive batteries...

AI Technical Summary

Problems solved by technology

Because the battery charging device does not have the battery detection function, when the remaining capacity of the electric locomotive battery is not clear, the battery charging device charges the electric locomotive battery, which is prone to overcharging, or the electric locomotive battery is over-discharged, etc., resulting in power failure. The service life of the locomotive battery is affected

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