A method for estimating a state of charge of a valve regulated lead-acid battery includes; an overcharge amount identification step of identifying an overcharge amount when the lead-acid battery is overcharged after an arbitrary reference time; an open circuit voltage acquisition step of acquiring an open circuit voltage of the lead-acid battery after the reference time; and a state-of-charge estimation step of estimating a state of charge of the lead-acid battery based on the acquired open circuit voltage and a correlation between an open circuit voltage and state of charge in which a rate of change of the state of charge with respect to the open circuit voltage is smaller as the overcharge amount from the reference time until an acquisition time of the open circuit voltage is larger.
METHOD FOR ESTIMATING STATE OF CHARGE, LIQUID REDUCTION AMOUNT OF ELECTROLYTE SOLUTION OF VALVE REGULATED LEAD-ACID BATTERY, AND DEVICE FOR MONITORING VALVE REGULATED LEAD-ACID BATTERY
24.06.2021
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
Europäisches Patentamt | 2023
|Improving the valve-regulated lead-acid battery
Online Contents | 2000
|Development of 36-V valve-regulated lead-acid battery
Online Contents | 2003
|Valve-regulated lead-acid batteries
Online Contents | 2001
|Pulse charge characteristics of valve regulated lead acid battery for electric vehicles
Kraftfahrwesen | 1999
|