CN101093904A - Recovery method for abnormal capacity loss of storage battery - Google Patents

Abstract

A recovery method for abnormal capacity loss of a storage battery belongs to the technical field of maintenance of lead-acid storage batteries and mainly comprises the following operation steps: connecting a storage battery to a charge and discharge machine; discharging the storage battery to 0V at a constant current of 3A-5A; continuously carrying out constant current reverse charging for 60-120 min by using a current of 3A-5A; after the accumulator is reversely charged, it is immediately current-limited by 5A, and is charged by 14.6V/voltage-limited constant voltage, and the constant voltage charging is stopped when the current is less than 0.3A. The present invention makes the valve controlled accumulator generate high temperature through over-discharge, i.e. reverse charge, and then charges the accumulator at high temperature, so that the corrosion layer with high resistance is forced to be converted into active matter at high temperature due to increased solubility and then overcharge, and thus the capacity of the accumulator is recovered.

Description

The restoration methods of improper capacity loss of accumulator

Technical field

The present invention relates to a kind of restoration methods of improper capacity loss of accumulator, belong to the maintaining technical field of lead acid accumulator.

Background technology

Valve-regulated lead-acid accumulator for electric bicycle is in usual use, and there often have the part battery capacity to descend in normal lifetime to be very fast, and when promptly also not arriving normal useful life, battery capacity is wretched insufficiency.At this moment, storage battery is neither produce micro-short circuit, also unprovoked electrode plate grid burn into lead plaster shedding etc. and the generation capacity descends, but battery capacity is seriously descended because of corrosion layer produces high resistant.The bicycle power accumulator of this type of inefficacy accounts for the overwhelming majority of the improper inefficacy of bicycle power accumulator, so the recovery of this type of battery capacity is had bigger economy and social enviroment protection benefit.

Summary of the invention

The purpose of this invention is to provide a kind of safety, convenient, reliable and can be to the restoration methods of the reusable improper capacity loss of accumulator of storage battery.

The present invention is the restoration methods of improper capacity loss of accumulator, it is characterized in that being undertaken by following operating procedure:

(1) storage battery is connected on the charge-discharge machine;

(2) with storage battery with the electric current constant-current discharge of 3A～5A to 0V;

(3) continuation is with electric current constant current reverse charge 60min～120min of 3A～5A;

(4) behind the storage battery reverse charge at once with the 5A current limliting, 14.6V/ pressure limiting constant voltage charge, constant voltage charge to electric current ends during less than 0.3A.

The present invention passes through the valve-control storage battery overdischarge, be reverse charge, make internal storage battery produce high temperature, more at high temperature to charge in batteries, make the corrosion layer high resistant at high temperature force to make it to be converted into active material by charging again, thereby battery capacity is recovered because of solubility strengthens.

Embodiment

Concrete operations step of the present invention is as follows:

(1), put storage battery into the cube metal cabinet, buckle cover plate up and down again, in case high temperature makes distortion around the storage battery in the storage battery recovery process;

(2), storage battery is connected on the charge-discharge machine;

(3), with storage battery with the electric current constant-current discharge of 3A～5A to 0V;

(4), continue electric current constant current overdischarge (reverse charge) 60min～120min with 3A～5A, make it produce high temperature;

(5), during overdischarge (reverse charge) when the accumulator meter surface temperature reaches 70 ℃～75 ℃, be less than even spend the time of putting, also should change next step at once and just charge;

(6), behind the cycle battery reverse charge at once with the 5A current limliting, 14.6V/ pressure limiting constant voltage charge, constant voltage charge to electric current ends during less than 0.3A;

(7), during as (6) step constant voltage charge 12h electric current also＞0.3A, illustrate the storage battery dehydration this moment, should drive valve and add deionized water to just saturated;

(8), inspectability discharge, see whether battery capacity is recovered.

The storage battery that is recovered by restoration methods of the present invention has following effect through long term test:

(1) storage battery of early stage capacitance loss takes place by making battery capacity that bigger recovery is all arranged with this kind method;

(2) the completely stable recovery capacity of storage battery energy of the early stage capacitance loss of about 80% generation;

(3) storage battery of early stage capacitance loss takes place in small part, and about 10%～20% can recover capacity fully, but is not very stable;

(4) this kind method can repeat to recover to same storage battery.

Claims (1)

1, a kind of restoration methods of improper capacity loss of accumulator is characterized in that being undertaken by following operating procedure:

(1) storage battery is connected on the charge-discharge machine;

(2) with storage battery with the electric current constant-current discharge of 3A～5A to 0V;

(3) continuation is with electric current constant current reverse charge 60min～120min of 3A～5A;

(4) behind the storage battery reverse charge at once with the 5A current limliting, 14.6V/ pressure limiting constant voltage charge, constant voltage charge to electric current ends during less than 0.3A.