DEVICE FOR DETERMINING STATE OF LEAD-ACID BATTERY AND METHOD FOR DETERMINING STATE OF VEHICLE AND LEAD-ACID BATTERY

Title:

DEVICE FOR DETERMINING STATE OF LEAD-ACID BATTERY AND METHOD FOR DETERMINING STATE OF VEHICLE AND LEAD-ACID BATTERY

Document Type and Number:

Japanese Patent JP2015165219

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To appropriately calculate the remaining capacity of a lead-acid battery irrespective of the nominal capacity of the lead-acid battery.SOLUTION: A state determination device 10 for a lead-acid battery 2 comprises: a voltage detection unit 102 for detecting the terminal voltage of the lead-acid battery; a current detection unit 103 for detecting a charge current and discharge current flowing in the lead-acid battery; a first acquisition unit 106 for acquiring the open-circuit voltage of the lead-acid battery from the terminal voltage detected by the voltage detection unit; a first arithmetic unit 105 for calculating the charge/discharge capacities of the lead-acid battery by using the charge current and discharge current detected by the current detection unit; a first storage unit 101 for storing a preset maximum voltage value and minimum voltage value of the open-circuit voltage of the lead-acid battery; and a second arithmetic unit 108 for calculating the remaining capacity of the lead-acid battery by using a plurality of open-circuit voltages of the lead-acid battery acquired by the first acquisition unit, the charge/discharge capacities of the lead-acid battery at a time when each of the plurality of open-circuit voltages of the lead-acid battery is acquired by the first acquisition unit, and the maximum voltage value and minimum voltage value.

More Like This:

JP2015072222	BATTERY MONITORING DEVICE
JP3251499	BATTERY RESIDUAL CAPACITY MEASURING APPARATUS

Inventors:

IIDA TAKUMA
KAKIUCHI KIMIYASU
WAGATSUMA MASATO
JINBO HIROYUKI

Application Number:

JP2014040466A

Publication Date:

September 17, 2015

Filing Date:

March 03, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

PANASONIC IP MAN CORP

International Classes:

G01R31/36; H01M10/42; H01M10/48; H02J7/00

Attorney, Agent or Firm:

Kentaro Fujii
Kenji Kamada
Hiroo Maeda

Previous Patent: FOOD WEIGHING DEVICE

Next Patent: LEAD-ACID BATTERY STATE DETERMINATION DEVICE, VEHICLE, AND LEAD-ACID BATTERY STATE DETERMINATION MET...