Battery Control Apparatus

• US 20170005483A1
• Filed: 09/10/2014
• Published: 01/05/2017
• Est. Priority Date: 11/29/2013
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: MIYAKE, Noriyuki, KAWAMURA, Tsutomu, KUWABARA, Kenichi, TOMITA, Yasushi, TAKAHASHI, Hirotaka, HISAJIMA, Daisuke, YAMADA, Junichi
• Granted Patent: US 10,554,065 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06Q 30/0283 Price estimation or determination
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid
• CPC Class Codes: Y04S 50/14 Marketing, i.e. market research and analysis, surveying, promotions, advertising, buyer profiling, customer management or rewards

Abstract

A battery control apparatus includes a reduced electricity cost analysis unit that obtains a discharge electric power cost at a discharge time and a charge electric power cost at a charge time of a battery, based on a basic cost and a unit cost of an electricity bill, and obtains a reduced electricity cost in which the charge electric power cost is subtracted from the discharge electric power cost for every discharge depth of the battery; an introduction cost analysis unit that calculates an introduction cost of the battery for every discharge depth of the battery; and a charge and discharge depth optimization unit that obtains a difference of the reduced electricity cost and the introduction cost for every discharge depth of the battery, and determines a charge and discharge depth of the battery based. on the difference. The discharge of the battery is performed at the determined charge and discharge depth.

Claims

1. A battery control apparatus comprising:

a reduced electricity cost analysis unit that obtains a discharge electric power cost at a discharge time and a charge electric power cost at a charge time of a battery, based on a basic cost and a unit cost of an electricity bill, and obtains a reduced electricity cost in which the charge electric power cost is subtracted from the discharge electric power cost for every discharge depth of the battery;

an introduction cost analysis unit that calculates an introduction cost of the battery for every discharge depth of the battery; and

a charge and discharge depth optimization unit that obtains a difference of the reduced electricity cost and the introduction cost for every discharge depth of the battery, and determines a charge and discharge depth of the battery based on the difference,

wherein the discharge of the battery is performed in the determined charge and discharge depth.

2. The battery control apparatus according to claim 1,

wherein the difference is a value obtained by subtracting the introduction cost from the reduced electricity cost.

3. The battery control apparatus according to claim 2,

wherein the charge and discharge depth optimization unit obtains, as an optimal value of the charge and discharge depth, the charge and discharge depth in which the difference which is an electricity bill which can be reduced by introducing the battery to a customer facility and performing charge and discharge, is large.

4. The battery control apparatus according to claim 2,

wherein the charge and discharge depth optimization unit obtains, as the optimal value of the charge and discharge depth of the battery, the charge and discharge depth in which the difference is a maximum value.

5. The battery control apparatus according to claim 2,

wherein the introduction cost analysis unit obtains the introduction cost for every discharge depth based on life span characteristics and an introduction cost of the battery.

6. The battery control apparatus according to claim 1, further comprising:

a display unit that displays a value of the charge and discharge depth obtained in the charge and discharge depth optimization unit, the reduced electricity cost for every discharge depth, and the introduction cost of the battery for every discharge depth.

7. The battery control apparatus according to claim 1,

wherein the difference is a value obtained by subtracting the reduced electricity cost from the introduction cost, and

wherein the charge and discharge depth in which the difference is small is calculated as an optimal value of the charge and discharge depth.

8. A battery control system comprising:

a battery control apparatus including

a reduced electricity cost analysis unit that obtains a discharge electric power cost at a discharge time and a charge electric power cost at a charge time of a battery, based on a basic cost and a unit cost of the electricity bill, and obtains a reduced electricity cost in which the charge electric power cost is subtracted from the discharge electric power cost for every discharge depth of the battery,

an introduction cost analysis unit that calculates an introduction cost of the battery for every discharge depth of the battery, and

a charge and discharge depth optimization unit that obtains a difference of the reduced electricity cost and the introduction cost for every discharge depth of the battery, and determines a charge and discharge depth of the battery based on the difference;

the battery; and

a device that receives electric power from the battery.

9. A method for controlling a battery comprising:

obtaining a discharge electric power cost at a discharge time and a charge electric power cost at a charge time of a battery based on a basic cost and a unit cost of an electricity bill;

obtaining a reduced electricity cost obtained by subtracting the charge electric power cost from the discharge electric power cost for every discharge depth of the battery;

calculating an introduction cost of the battery for every discharge depth of the battery;

obtaining a difference of the reduced electricity cost and the introduction cost for every discharge depth of the battery;

determining a charge and discharge depth of the battery based on the difference; and

discharging the battery at the charge and discharge depth.