INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM

• US 20170254853A1
• Filed: 09/02/2015
• Published: 09/07/2017
• Est. Priority Date: 09/05/2014
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: IMAMURA, Yuichi, MIYAMOTO, Junichi, TAKAHASHI, Shingo, OHTANI, Sho
• Application Number:
  US15/505,417
• Publication Number:
  US 20170254853A1
• Time in Patent Office: Days
• CPC Class Codes: G01R 31/36 Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• CPC Class Codes: G01R 31/388 involving voltage measurements
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/005 Detection of state of health [SOH]
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An information processing device according to the present invention includes: a reception unit which receives a state of an electricity storage unit which stores electric power; a charge and discharge control unit which controls charging in a charging period that includes a first period in which charging is performed from a second lower-limit voltage to a first lower-limit voltage and a second period in which charging is performed from the first lower-limit voltage to a first upper-limit voltage; and a capacity computation unit which calculates a capacity of the electricity storage unit, based on the state in the second period.

Claims

1. An information processing device comprising:

a reception unit which receives a state of an electricity storage unit which stores electric power;

a charge and discharge control unit which controls charging in a charging period that includes a first period in which charging is performed from a second lower-limit voltage to a first lower-limit voltage and a second period in which charging is performed from the first lower-limit voltage to a first upper-limit voltage; and

a capacity computation unit which calculates a capacity of the electricity storage unit, based on the state in the second period.

2. The information processing device according to claim 1, further comprising:

a voltage setting unit which calculates the second lower-limit voltage, based on the state and the first lower-limit voltage.

5. The information processing device according to claim 1, wherein

the charging period and the discharging period include, between the first period and the second period, a period in which charging or discharging is not performed.

6. The information processing device according to claim 1, wherein

the charge and discharge unit instructs charging or discharging at a constant current and a constant voltage.

3. (canceled)

4. (canceled)

7. (canceled)

8. An information processing method for an information processing device, the method comprising:

receiving a state of an electricity storage unit which stores electric power;

controlling charging of the electricity storage unit in a charging period that includes a first period in which charging is performed from a second lower-limit voltage to a first lower-limit voltage and a second period in which charging is performed from the first lower-limit voltage to a first upper-limit voltage; and

calculating a capacity of the electricity storage unit, based on the state in the second period.

9. A computer readable non-transitory recording medium embodying a program, the program causing a computer to perform a method, the method comprising:

receiving a state of an electricity storage unit which stores electric power;

controlling charging of the electricity storage unit in a charging period that includes a first period in which charging is performed from a second lower-limit voltage to a first lower-limit voltage and a second period in which charging is performed from the first lower-limit voltage to a first upper-limit voltage; and

calculating a capacity of the electricity storage unit, based on the state in the second period.