POWER SUPPLY SYSTEM

• US 20130049468A1
• Filed: 05/10/2011
• Published: 02/28/2013
• Est. Priority Date: 05/11/2010
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Iwasaki, Toshiya, Shimizu, Atsushi, Suyama, Atsushi
• Granted Patent: US 9,627,891 B2
• Time in Patent Office: Days
• US Class Current: 307/48
• CPC Class Codes: H02J 2203/20 Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
• CPC Class Codes: H02J 2300/22 The renewable source being solar energy
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

There is provided a power supply system in which a user can easily determine an optimum method of consuming power obtained by discharging a power storage portion. The power supply system (1) includes: a power storage portion (11) that supplies a power by discharge; a dischargeable time prediction portion (55) that predicts, when a power is supplied to a predetermined load among a plurality of loads included in the load portion (31), a dischargeable time that is a time period in which the power storage portion (11) can perform discharge; and a notification portion (70) that notifies a user of the dischargeable time predicted by the dischargeable time prediction portion (55). The dischargeable time prediction portion (55) predicts a plurality of dischargeable times in which combinations of loads receiving power supply are different and the notification portion (70) notifies the dischargeable times.

Claims

1. A power supply system comprising:

a power storage portion;

a dischargeable time prediction portion that predicts, when a power is supplied to a predetermined load, a time period in which the power storage portion can perform discharge; and

a notification portion that notifies a user of the dischargeable time predicted by the dischargeable time prediction portion,

wherein a plurality of the loads are present, the dischargeable time prediction portion predicts a dischargeable time for each of a plurality of load patterns produced by combinations of the loads and the notification portion notifies the dischargeable time corresponding to each of the load patterns.

2. The power supply system of claim 1 further comprising:

a remaining capacity measurement portion that measures an amount of power stored in the power storage portion; and

a load demand amount prediction portion that predicts an amount of power supplied to the load,

wherein the dischargeable time prediction portion predicts the dischargeable time based on the amount of power measured by the remaining capacity measurement portion and the amount of power predicted by the load demand amount prediction portion.

3. The power supply system of claim 2 further comprising:

a load measurement portion that measures the power or a current supplied to the load; and

a database that records information on the power or the current measured by the load measurement portion,

wherein the load demand amount prediction portion predicts the amount of power supplied to the load based on at least one of the power or the current measured by the load measurement portion and the information, recorded in the database, on the power or the current supplied to the load.

4. The power supply system of claim 2 further comprising:

a power generation portion that supplies a power by power generation; and

a power generation amount prediction portion that predicts an amount of power supplied by the power generation portion,

wherein the dischargeable time prediction portion predicts the dischargeable time based on the amount of power measured by the remaining capacity measurement portion, the amount of power predicted by the power generation amount prediction portion and the amount of power predicted by the load demand amount prediction portion.

5. The power supply system of claim 4 further comprising:

a power generation measurement portion that measures the power or a current supplied by the power generation portion; and

a database that records information on the power or the current measured by the power generation measurement portion,

wherein the power generation amount prediction portion predicts the amount of power supplied by the power generation portion based on at least one of the power or the current measured by the power generation measurement portion and the information, recorded in the database, on the power or the current supplied by the power generation portion.

6. The power supply system of claim 1,

wherein a system power supplied from an electric power company can be supplied to the power supply system,

a power generation portion that supplies a power by power generation is further included, and

when the supply of the system power is stopped, at least one of a power supplied by discharge of the power storage portion and a power supplied by power generation with the power generation portion is supplied to the load.

7. The power supply system of claim 2,

wherein the prediction of the dischargeable time is performed every predetermined time period.

8. The power supply system of claim 1, further comprising:

input means that inputs a time period,

wherein combinations of loads that can be supplied in the time period input by the input means are displayed.

9. The power supply system of claim 1, further comprising:

input means that inputs a time,

wherein combinations of loads that can be supplied by the time input by the input means are displayed.

10. The power supply system of claim 1, further comprising:

selection means that selects one of combinations of the loads which are displayed; and

control means that controls the loads,

wherein, based on the combination selected by the selection means, the control means controls the loads.