BATTERY CONTROL SYSTEM, BATTERY CONTROLLER, BATTERY CONTROL METHOD, AND RECORDING MEDIUM

• US 20140217989A1
• Filed: 07/17/2012
• Published: 08/07/2014
• Est. Priority Date: 09/02/2011
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Kudo, Koji, Sakuma, Hisato, Yano, Hitoshi
• Application Number:
  US14/241,776
• Publication Number:
  US 20140217989A1
• Time in Patent Office: Days
• US Class Current: 320/134
• CPC Class Codes: H01M 10/0445 Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H02J 3/322 the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• 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: Y02E 60/10 Energy storage using batteries

Abstract

A battery control system for controlling operation of a part of a plurality of batteries connected to an electric power system includes: detection that detects a battery characteristic of each of the plurality of batteries; selection that selects, as candidates for an adjustment battery used to adjust power of the power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and selects the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and control that outputs, to the adjustment battery, an operation instruction instructing a charge or discharge operation.

Claims

1. A battery control system for controlling operation of a part of a plurality of batteries connected to an electric power system, the battery control system comprising:

a detection unit that detects a battery characteristic of each of the plurality of batteries;

a selection unit that selects, as candidates for an adjustment battery used to adjust power of the electric power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and selects the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and

a control unit that outputs, to the adjustment battery selected by said selection unit means, an operation instruction instructing a charge or discharge operation.

2. The battery control system according to claim 1, wherein

said detection unit detects, as the battery characteristic, at least a charge or discharge characteristic of the battery, and

the predetermined range of the battery characteristic specifies at least a range of the battery charge or discharge characteristic.

3. The battery control system according to claim 2, wherein the battery charge or discharge characteristic is specified by at least one from among delay time that is defined as time from a time when the battery receives the operation instruction to a time when the battery performs operation corresponding to the operation instruction, longest charge and discharge duration of the battery, charge and discharge output of the battery, remaining capacity of the battery, remaining empty capacity of the battery, SOC of the battery, and voltage at the connection point between the battery and the electric power system.

4. The battery control system according claim 1, wherein, when a plurality of adjustment batteries selected by said selection unit exist, said control unit outputs, as the operation instruction, an operation instruction that specifies at least one of a common charge start timing or a common discharge start timing.

5. The battery control system according to claim 1, wherein, among the plurality of batteries, said selection unit selects candidates for the adjustment battery from batteries, for whom permission information indicating that use of the batteries is permitted has been notified.

6. The battery control system according to claim 1, wherein

among the plurality of batteries, said selection unit selects candidates for the adjustment battery from batteries, for whom permission information indicating, that use of a part of charge and discharge capacity of the batteries is permitted, has been notified, and

when a plurality of the adjustment batteries is present, said control unit outputs, to the adjustment batteries, an operation instruction instructing charge or discharge operation within a range of the part of the charge and discharge capacity, the use of the part of the charge and discharge capacity being permitted.

7. The battery control system according claim 1, wherein

said detection unit detects the battery characteristic of each of the batteries a plurality of times, and

said selection unit specifies, among the plurality of batteries, a deteriorated battery in a deteriorated state on the basis of a change in the battery characteristic detected a plurality of times for each of the batteries, and selects candidates for the adjustment battery from the plurality of batteries other than the deteriorated battery.

8. The battery control system according to claim 1, further comprising a display unit that displays the predetermined battery characteristic range, the selection result of the candidate for the adjustment battery, and the selection result of the adjustment battery.

9. A battery controller for controlling operation of a battery connected to an electric power system, the battery controller comprising:

a communication unit; and

a control unit that is configured, when said communication unit receives a characteristic request requesting a characteristic of the battery, to cause said communication unit to transmit the characteristic of the battery to the transmission source of the characteristic request, and is configured, when said communication unit receives an operation instruction specifying a charge or discharge operation of the battery, to control the battery on the basis of the operation instruction.

10. A battery control method used in a battery control system for controlling operation of a part of a plurality of batteries connected to an electric power system, the battery control method comprising:

detecting a battery characteristic of each of the plurality of batteries;

selecting, as candidates for an adjustment battery used to adjust power of the electric power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and selecting the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and

outputting, to the adjustment battery, an operation instruction instructing a charge or discharge operation.

11. A battery control method used in a battery controller for controlling operation of a battery connected to an electric power system, the battery control method comprising:

transmitting, when receiving a characteristic request requesting a characteristic of the battery, the characteristic of the battery to the transmission source of the characteristic request, and

controlling, when receiving an operation instruction specifying a charge or discharge operation of the battery, the battery on the basis of the operation instruction.

12. A non-transitory computer-readable recording medium with a program recorded thereon, the program causing a computer to execute:

a detection procedure to detect a battery characteristic of each of a plurality of batteries connected to an electric power system;

a selection procedure to select, as candidates for an adjustment battery used to adjust power of the electric power system, batteries, each having a characteristic within a predetermined range of the battery characteristic, from the plurality of batteries, and select the adjustment battery on the basis of a predetermined condition from the candidates for the adjustment battery; and

a control procedure to output, to the adjustment battery, an operation instruction instructing a charge or discharge operation.

13. A non-transitory computer-readable recording medium with a program recorded thereon, the program causing a computer to execute the following procedure:

when receiving a characteristic request requesting a characteristic of a battery connected to an electric power system, to transmit the characteristic of the battery to the transmission source of the characteristic request, and when receiving an operation instruction specifying a charge or discharge operation of the battery, to control the battery on the basis of the operation instruction.