METHOD FOR RECOVERING AN ACCUMULATOR BATTERY AND APPARATUS FOR PERFORMING THEREOF

• US 20110031932A1
• Filed: 04/10/2010
• Published: 02/10/2011
• Est. Priority Date: 08/07/2009
• Status: Abandoned Application

• Current Assignee: United Tech Batteries, LLC
• Original Assignee: United Tech Batteries, LLC
• Inventors: Platonov, Gennadiy Dmitrievich
• Application Number:
  US12/757,990
• Publication Number:
  US 20110031932A1
• Time in Patent Office: Days
• US Class Current: 320/134
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 7/00711 with introduction of pulses during the charging process
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method for recovering the accumulator battery, according to which method performed are the steps of: charging the accumulator battery that is carried out by passing therethrough the sequence of the rectangular current pulses which have a magnitude in the range of 400 to 480 A and a duty factor of 100 to 400; discharging the accumulator battery that is carried out in the pauses between the actions of the rectangular pulses for charging; and ceasing the cycles of charging with the rectangular pulses and discharging in the pauses therebetween when the measured amounts reach the values of the parameters defining the end of the process for charging the battery and recorded preliminary into the memory; then measuring the battery capacity by using the control discharge of the battery, and ceasing the control discharge when the voltage amount of the battery reaches the maximum permissible value set for this battery.

Claims

1. A method for recovering the accumulator battery including steps of:

charging preliminarily an accumulator battery with direct current;

during the charging process, measuring a voltage across the accumulator battery, and an electrolyte temperature and density;

logging measured parameters;

prior to beginning a process of recovering the accumulator battery, recording predetermined parameters of a technological process of recovering the accumulator battery into a memory;

during the process of recovering the accumulator battery, comparing the recorded predetermined parameters with values of the measured actual accumulator battery parameters, and correcting the actual parameters if the measured actual parameters deviate from the recorded predetermined parameters of the technological process;

terminating the step of charging the accumulator battery with the direct current when the measured actual accumulator battery parameters reach values of the predetermined parameters recorded in the memory;

thereafter, charging the accumulator battery by passing therethrough a sequence of rectangular current pulses while holding an amplitude of the pulses constant if a temperature of the electrolyte is below a predetermined temperature value, and, if the temperature of the electrolyte exceeds the predetermined temperature value, reducing the amplitude of the rectangular current pulses to a value at which the temperature of the electrolyte is decreased to the predetermined temperature value, the step of charging the accumulator battery being carried out by passing therethrough the sequence of the rectangular current pulses which have a magnitude in the range of 400A to 480A and a duty factor of 100 to 400;

discharging the accumulator battery during pauses between the rectangular pulses for charging;

terminating cycles of charging with the rectangular pulses and discharging during the pauses therebetween when the measured actual parameters reach values of the recorded predetermined parameters defining an end of the process for charging the battery;

thereafter, measuring a battery capacity by using a control discharge of the battery; and

terminating the control discharge when a battery voltage reaches a maximum permissible value set for the battery.

2. The method according to claim 1, further comprising a step of repeating the cycle for recovering the accumulator battery if the battery capacity is less than 90% of its nominal amount after the recovery process.

3. An apparatus for implementing a method according to claim 1, the apparatus comprising:

a charging unit an output of which is connected to the accumulator battery being recovered;

a current sensor;

a voltage sensor;

a temperature sensor;

an electrolyte density meter;

a memory unit;

a processor;

an interface unit;

an indication unit;

a decoder; and

a discharging unit,

wherein the memory unit and the indication unit are connected to the processor;

wherein the current sensor, the voltage sensor, the temperature sensor and the electrolyte density meter are connected to the processor via the interface unit;

wherein an output of the processor is connected to an input of the decoder;

wherein a first output of the decoder is connected to an input for controlling connection of the charging unit, a second output of the decoder is connected to an input for controlling parameters of the charging unit; and

wherein an input of the discharging unit is connected via the decoder to the processor and an output of the discharging unit is connected to the accumulator battery being recovered.