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US 7,453,238 B2Granted
State of charge tracking system for battery systems based on relaxation voltage
AssigneeCobasys, LLC
InventorRobert Melichar
Life of this patent
Estimating the term…
Abstract
A battery control module for a battery system comprises a voltage measuring module that measures battery voltage and a current measuring module that measures battery current. A state of charge (SOC) module that communicates with the current and voltage measuring modules and that estimates SOC based on relaxation voltage.
Claims18
A battery control module for a battery system, comprising:
- a voltage measuring module that measures battery voltage;
- a current measuring module that measures battery current;
- and
- a state of charge (SOC) module that communicates with said current and voltage measuring modules and that estimates SOC based on relaxation voltage, wherein said SOC module enables said estimation of said SOC based on one of a qualified charge swing following a discharge swing and a qualified discharge swing following a charge swing.
1 more element
A method for operating a battery control module for a battery system, comprising:
- measuring battery voltage;
- measuring battery current;
- estimating state of charge (SOC) based on relaxation voltage, said battery voltage and said battery;
- and
- enabling said SOC estimation when one of a qualified charge swing follows a discharge swing and a qualified discharge swing follows a charge swing.
2 more elements
Dependencies are inferred from the claim text.