Battery control system, battery control device, battery control method and recording medium

Patent metadata

Field	Value
Publication number	US-2016285286-A1
Application number	US-201615176531-A
Country	US
Kind code	A1
Filing date	Jun 8, 2016
Priority date	Sep 22, 2011
Publication date	Sep 29, 2016
Grant date	—

Abstract

A battery control system, which controls operation of a plurality of batteries connected to an electric power system, comprises: detecting means that detects a delay period of each of the batteries which represents a period that has elapsed after the battery control system supplies the battery with an execution command for charging or discharging the battery until the battery operates according to the execution command; measuring means that measures a frequency rate-of-change of electric power of the electric power system; selecting means that selects adjustment batteries for adjusting the electric power of the electric power system from the batteries based on the frequency rate-of-change and the delay period of each of the batteries; and command means for supplying the execution command to the adjustment batteries.

First claim

1 - 13 . (canceled)

14 . A battery control system for controlling operation of a plurality of batteries connected to an electric power system, comprising:
a detecting unit that detects a delay period of each battery of the plurality of batteries which represents a period that has elapsed after the battery control system supplies said each battery with an execution command for charging or discharging said each battery until the battery operates according to the execution command; a selecting unit that selects adjustment batteries and which adjusts the electric power of said electric power system from among said plurality of batteries based on the delay period of each battery of said plurality of batteries; and a command unit for supplying said execution command to said adjustment batteries.

15 . The battery control system according to claim 14 , wherein said selecting unit preferentially selects batteries, whose delay period is shorter, as said adjustment batteries, from among said plurality of batteries.

16 . The battery control system according to claim 14 , wherein said selecting unit comprises:
a grouping unit that divides said plurality of batteries into a plurality of groups that are sorted out according to a length of each of the delay periods; and a battery selecting unit that, from among said plurality of groups, preferentially selects groups, whose delay period is shorter, as adjustment groups, and selects the batteries in the adjustment groups as said adjustment batteries.

17 . The battery control system according to claim 14 , wherein said detecting unit detects a value of a predetermined item that is different from said delay period from among each battery of said plurality of batteries or each device connected respectively to said batteries; and
said selecting unit selects said adjustment batteries from among said plurality of batteries based on the delay period of each battery of said plurality of batteries, and the value of said predetermined item.

18 . The battery control system according to claim 17 , wherein said selecting unit comprises:
a grouping unit that divides said batteries into a plurality of groups sorted out according to lengths of the delay periods; and a battery selecting unit that, from among said plurality of groups, preferentially selects groups, whose delay periods are shorter, as adjustment groups, selects said adjustment batteries based on the value of said predetermined item from among the plurality of batteries included in a longest period group whose delay time is longest among said adjustment groups, and, if there are groups other than said longest period group among said adjustment groups, selects the batteries included in the groups other than said longest period group as said adjustment batteries

19 . The battery control system according to claim 17 , wherein said predetermined item comprises a maximum charging and discharging output level of said plurality of batteries, a remaining charging and discharging capacity of said plurality of batteries, a voltage at junction points between said batteries and said electric power system, or the maximum charging and discharging output level of said batteries and a charging and discharging rate of said plurality of batteries.

20 . The battery control system according to claim 17 , wherein said predetermined item comprises a maximum charging and discharging output level of said plurality of batteries; and
said selecting unit preferentially selects batteries, whose maximum charging and discharging output level is greater, as said adjustment batteries, from among said plurality of batteries.

21 . The battery control system according to claim 17 , wherein said predetermined item comprises a charging and discharging rate; and
said selecting unit preferentially selects batteries, whose charging and discharging rate is larger, as said adjustment batteries, from among said plurality of batteries.

22 . The battery control system according to claim 17 , wherein said predetermined item comprises a voltage at junction points between said plurality of batteries and said electric power system; and
said selecting unit preferentially selects batteries, which are connected to devices with a high junction voltage, as said adjustment batteries, from among said plurality of batteries when charging said adjustment batteries.

23 . The battery control system according to claim 17 , wherein said predetermined item comprises a voltage at junction points between said plurality of batteries and said electric power system; and
said selecting unit preferentially selects batteries, which are connected to devices with a low junction voltage, as said adjustment batteries, from among said plurality of batteries when discharging said adjustment batteries.

24 . A battery control method to be performed by a battery control system for controlling operation of a plurality of batteries connected to an electric power system, comprising:
detecting a delay period of each battery of the plurality of batteries which represents a period that has elapsed after the battery control system supplies said each battery with an execution command for charging or discharging said each battery until said each battery operates according to the execution command; selecting adjustment batteries and adjusting the electric power of said electric power system from among said plurality of batteries based on the delay period of each battery of said plurality of batteries; and supplying said execution command to said adjustment batteries.

25 . A non-transitory recording medium readable by a computer and storing a program which enables said computer to perform:
a detecting procedure for detecting a delay period of each battery of the plurality of batteries which represents a period that has elapsed after the battery control system supplies said each battery with an execution command for charging or discharging said each battery until said each battery operates according to the execution command; a selecting procedure for selecting adjustment batteries and adjusting the electric power of said electric power system from among said plurality of 0batteries based on the delay period of each battery of said plurality of batteries; and a command procedure for supplying said execution command to said adjustment batteries.

Assignees

• Nec Corp

Inventors

• Kudo Koji
• Sakuma Hisato
• Yano Hitoshi

Classifications

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• Y02E70/30

  Systems combining energy storage with energy generation of non-fossil origin · CPC title

• H02J3/381

  Dispersed generators · CPC title

• H02J2101/28

  Wind energy · CPC title

• H02J2101/24

  Photovoltaics · CPC title