US 2016/0252582 A1 · STATE-OF-CHARGE ESTIMATING DEVICE, STATE-OF-CHARGE DETERMINING METHOD, AND STATE-OF-CHARGE DETERMINING PROGRAM

Abstract

A state-of-charge estimating device includes an open-circuit voltage estimating part, a map selecting part, and a state-of-charge estimating part. The open-circuit voltage estimating part estimates an open-circuit voltage of a secondary battery. The map selecting part selects a map indicating a relationship between a first open-circuit voltage and a state of charge of the secondary battery, based on the first open-circuit voltage of the secondary battery fully charged. The state-of-charge estimating part estimates the state of charge corresponding to a second open-circuit voltage after estimating the first open-circuit voltage, based on the selected map.

Claims7

Dependent claims

A state-of-charge estimating device comprising:

an open-circuit voltage estimating part that estimates an open-circuit voltage of a secondary battery;
a map selecting part that selects a map indicating a relationship between a first open-circuit voltage and a state of charge of the secondary battery, based on the first open-circuit voltage of the secondary battery fully charged;
and
a state-of-charge estimating part that estimates the state of charge corresponding to a second open-circuit voltage after estimating the first open-circuit voltage, based on the selected map.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/150,270Filed 9 May 2016

Priority

JP 2013-2520885 Dec 2013

Published

1 Sep 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

H01M 10/4285
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: testing apparatus
G01R 31/367
Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of…
G01R 31/3835
Arrangements for monitoring battery or accumulator variables, e.g. SoC: involving only voltage measurements
G01R 31/388
Determining ampere-hour charge capacity or SoC: involving voltage measurements

State-of-charge estimating device, state-of-charge determining method, and state-of-charge determining program

Life of this patent

State-of-charge estimating device, state-of-charge determining method, and state-of-charge determining program

Life of this patent

Abstract

Claims7