Battery Management
First Claim
1. A method for battery management, the method comprising:
- performing a pretest routine on a first battery string in a battery bank, wherein performing the pretest routine comprises;
measuring a pretest open circuit voltage of each of a plurality of batteries in the first battery string, andperforming a preliminary charge routine on the first battery string when the pretest open circuit voltage of any of the plurality of batteries in the first battery string is below a predetermined voltage, wherein performing the preliminary charge routine comprises;
charging the first battery string, andmeasuring the pretest open circuit voltage of each of the plurality of batteries in the first battery string,until the pretest open circuit voltage of each battery in the first battery string has increased less than a preliminary charge voltage difference;
performing a main charge routine comprising;
(i) charging the first battery string for a charge time,(ii) isolating the first battery string from charging for a rest time,(iii) repeating stages (i) and (ii) a predetermined number of times,(iv) measuring a charge open circuit voltage for each of the plurality of batteries in the first battery string,until the charge open circuit voltage of each battery in the first battery sting has increased less than a charging voltage differential;
performing a non-load testing routine comprising;
measuring a test open circuit voltage for each battery in the first battery string, andrecording, in a database, a first defective indicator that a first battery in the first battery string is defective when the test open circuit voltage for the first battery is below a predetermined voltage level; and
performing a load testing routine on each of the plurality of batteries in the first battery string not having the first defective indicator stored in the database, wherein performing the load testing routine comprises;
loading each of the plurality of batteries in the first battery string not having the first defective indicator stored in the database with a preset load for a load time,measuring, after the load time, a test load voltage for each of the plurality of batteries loaded with the preset load, andrecording, in the database, a second defective indicator that a second battery in the first battery string is defective when a difference between the test open circuit voltage of the second battery and the test load voltage of the second battery is greater than a load voltage differential.
1 Assignment
0 Petitions
Accused Products
Abstract
Battery management may be provided. First, a battery string in a battery bank may be charged for a charge time. After charging the battery string, the battery string may be isolated from charging for a rest time. Once the charging and resting from charging is complete, a test open circuit voltage for each battery in the first battery string may be measured. In addition, a defective indicator that a battery is defective may be recorded in a database. Next, a battery may be loaded with a preset load for a load time. After loading the battery, a test load voltage for each of the batteries loaded with the preset load may be measured. A second defective indicator that a battery is defective may be recorded in the database when the test load voltage for the second battery is greater than a load voltage differential.
-
Citations
20 Claims
-
1. A method for battery management, the method comprising:
-
performing a pretest routine on a first battery string in a battery bank, wherein performing the pretest routine comprises; measuring a pretest open circuit voltage of each of a plurality of batteries in the first battery string, and performing a preliminary charge routine on the first battery string when the pretest open circuit voltage of any of the plurality of batteries in the first battery string is below a predetermined voltage, wherein performing the preliminary charge routine comprises; charging the first battery string, and measuring the pretest open circuit voltage of each of the plurality of batteries in the first battery string, until the pretest open circuit voltage of each battery in the first battery string has increased less than a preliminary charge voltage difference; performing a main charge routine comprising; (i) charging the first battery string for a charge time, (ii) isolating the first battery string from charging for a rest time, (iii) repeating stages (i) and (ii) a predetermined number of times, (iv) measuring a charge open circuit voltage for each of the plurality of batteries in the first battery string, until the charge open circuit voltage of each battery in the first battery sting has increased less than a charging voltage differential; performing a non-load testing routine comprising; measuring a test open circuit voltage for each battery in the first battery string, and recording, in a database, a first defective indicator that a first battery in the first battery string is defective when the test open circuit voltage for the first battery is below a predetermined voltage level; and performing a load testing routine on each of the plurality of batteries in the first battery string not having the first defective indicator stored in the database, wherein performing the load testing routine comprises; loading each of the plurality of batteries in the first battery string not having the first defective indicator stored in the database with a preset load for a load time, measuring, after the load time, a test load voltage for each of the plurality of batteries loaded with the preset load, and recording, in the database, a second defective indicator that a second battery in the first battery string is defective when a difference between the test open circuit voltage of the second battery and the test load voltage of the second battery is greater than a load voltage differential. - View Dependent Claims (2, 3, 4, 5, 9)
-
-
6. A method for battery management, the method comprising:
-
(i) charging a first battery string in a battery bank for a charge time; (ii) isolating the first battery string from charging for a rest time; (iii) measuring a test open circuit voltage for each battery in the first battery string; (iv) recording, in a database, a first defective indicator that a first battery in the first battery string is defective when the test open circuit voltage for the first battery is below a predetermined voltage level; (v) loading each of the batteries in the first battery string not having the first defective indicator stored in the database with a preset load for a load time; (vi) measuring, after the load time, a test load voltage for each of the batteries loaded with the preset load; and (vii) recording, in the database, a second defective indicator that a second battery is defective when the test load voltage for the second battery is greater than a load voltage differential. - View Dependent Claims (7, 8, 10, 11, 12, 13, 14)
-
-
15. A system for managing batteries, the system comprising:
-
a memory storage; and a processing unit coupled to the memory storage, wherein the processing unit is operative to; charge a first battery string in a battery bank for a charge time, isolate the first battery string from charging for a rest time, measure a test open circuit voltage for each battery in the first battery string, record, in a database stored in the memory, a first defective indicator that a first battery in the first battery string is defective when the test open circuit voltage for the first battery is below a predetermined voltage level, load each of the batteries in the first battery string not having the first defective indicator stored in the database with a preset load for a load time, measure, after the load time, a test load voltage for each of the batteries loaded with the preset load, and record, in the database, a second defective indicator that a second battery is defective when the test load voltage for the second battery is greater than a load voltage differential. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification