RAPID CHARGER

• US 20130020983A1
• Filed: 01/07/2011
• Published: 01/24/2013
• Est. Priority Date: 01/08/2010
• Status: Abandoned Application

• Current Assignee: JFE Engineering Corporation (JFE Holdings Incorporated)
• Original Assignee: JFE Engineering Corporation (JFE Holdings Incorporated)
• Inventors: Tamura, Atsushi, Imai, Takashi, Ishikawa, Hirofumi, Shimamura, Takahiro, Imaizumi, Masato
• Application Number:
  US13/520,348
• Publication Number:
  US 20130020983A1
• Time in Patent Office: Days
• US Class Current: 320/104
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A rapid charger includes a storage battery for equipment, a DC power supply unit which converts AC power of an AC power supply into DC power, and a controller which controls the DC power supply unit such that the DC power supply unit generates DC power to charge the storage battery for equipment from the AC power of the AC power supply and allows the DC power to be supplied from the DC power supply unit to the storage battery for equipment during charging of the storage battery for equipment, wherein, when a storage battery for driving power as a load is connected, the controller allows the DC power supply unit and the storage battery for equipment to form a series circuit, controls the DC power supply unit such that the DC power supply unit generates a predetermined DC power from the AC power of the AC power supply, adds the predetermined DC power to the DC power of the storage battery for equipment to generate DC power to charge the storage battery for driving power, and allows the DC power to be supplied to the storage battery for driving power.

Claims

1. A rapid charger comprising:

a storage battery for equipment;

a DC power supply unit which converts AC power of an AC power supply into DC power; and

a controller which controls the DC power supply unit such that the DC power supply unit generates DC power to charge the storage battery for equipment from the AC power of the AC power supply and allows the DC power to be supplied from the DC power supply unit to the storage battery for equipment during the charging of the storage battery for equipment,

wherein, when a storage battery for driving power as a load is connected, the controller allows the DC power supply unit and the storage battery for equipment to form a series circuit, controls the DC power supply unit such that the DC power supply unit generates a predetermined DC power from the AC power of the AC power supply, adds the predetermined DC power to the DC power of the storage battery for equipment to generate DC power to charge the storage battery for driving power, and allows the DC power to be supplied to the storage battery for driving power.

3. The rapid charger according to claim 1, wherein, when there is no sensing that the storage battery for driving power is connected, the controller controls the DC power supply unit such that the DC power is supplied to the storage battery for equipment.

4. The rapid charger according to claim 1,

wherein a plurality of the DC power supply units are installed, and

wherein, when it is sensed that the storage battery for driving power is connected, the controller controls the DC power supply unit connected to the storage battery for driving power to be connected to the AC power supply and the storage battery for equipment to generate a predetermined DC power from the DC power supply unit and allows the predetermined DC power to be added to the DC power of the storage battery for equipment.

5. The rapid charger according to claim 1, wherein, where it is sensed that the storage battery for driving power is connected when the remaining amount of the storage battery for equipment is almost empty, the controller controls the DC power supply unit such that the DC power supply unit generates a predetermined DC power from the AC power of the AC power supply and allows the predetermined DC power to be supplied from the DC power supply unit to the storage battery for driving power.

6. The rapid charger according to claim 1, further comprising a normally-opened switch installed between a positive electrode side of the storage battery for equipment and an output side of the DC power supply unit,

wherein, when the AC voltage of the AC power supply is equal to or lower than a predetermined value, the controller allows the switch to be closed to use the storage battery for equipment as an emergency power supply.

13. The rapid charger according to claim 1, further comprising an auxiliary power supply connected in parallel to the storage battery for equipment.

18. The rapid charger according to claim 3,

wherein a plurality of the DC power supply units are installed, and

wherein, when it is sensed that the storage battery for driving power is connected, the controller controls the DC power supply unit connected to the storage battery for driving power to be connected to the AC power supply and the storage battery for equipment to generate a predetermined DC power from the DC power supply unit and allows the predetermined DC power to be added to the DC power of the storage battery for equipment.

2. A rapid charger comprising:

a storage battery for equipment;

a DC power supply unit which converts AC power of an AC power supply into DC power; and

a controller which controls the DC power supply unit such that the DC power supply unit generates DC power to charge the storage battery for equipment from the AC power of the AC power supply and allows the DC power to be supplied from the DC power supply unit to the storage battery for equipment during the charging of the storage battery for equipment,

wherein, when a storage battery for driving power as a load is connected, the controller allows the DC power supply unit and the storage battery for equipment to form a series circuit, controls the DC power supply unit such that the DC power supply unit generates a predetermined DC power from the AC power of the AC power supply, adds the DC power of the storage battery for equipment to the predetermined DC power to generate a DC power to charge the storage battery for driving power, and allows the DC power to be supplied to the storage battery for driving power.

14. The rapid charger according to claim 2, further comprising an auxiliary power supply connected in parallel to the storage battery for equipment.

16. The rapid charger according to claim 2, wherein, when there is no sensing that the storage battery for driving power is connected, the controller controls the DC power supply unit such that the DC power is supplied to the storage battery for equipment.

17. The rapid charger according to claim 2,

wherein a plurality of the DC power supply units are installed, and

wherein, when it is sensed that the storage battery for driving power is connected, the controller controls the DC power supply unit connected to the storage battery for driving power to be connected to the AC power supply and the storage battery for equipment to generate a predetermined DC power from the DC power supply unit and allows the predetermined DC power to be added to the DC power of the storage battery for equipment.

7. A rapid charger comprising:

a storage battery for equipment;

first and second DC power supply units, each of which converts an AC power of an AC power supply into a DC power; and

a controller which controls the first DC power supply unit such that the first DC power supply unit generates DC power to charge the storage battery for equipment from the AC power of the AC power supply and allows the DC power to be supplied from the first DC power supply unit to the storage battery for equipment during charging of the storage battery for equipment,

wherein, when the storage battery for driving power as a load is connected, the controller controls the second DC power supply unit such that the second DC power supply unit generates a predetermined DC power from the AC power of the AC power supply, adds the predetermined DC power to the DC power of the storage battery for equipment to generate DC power to charge the storage battery for driving power, and allows the DC power to be supplied from the second DC power supply unit to the storage battery for driving power.

8. The rapid charger according to claim 7, wherein, when there is no sensing that the storage battery for driving power is connected, the controller controls the first DC power supply unit such that the DC power is supplied to the storage battery for equipment.

9. The rapid charger according to claim 7,

wherein a plurality of the second DC power supply units are installed, and

wherein, when it is sensed that the storage battery for driving power is connected, the controller controls the second DC power supply unit connected to the storage battery for driving power to be connected to the AC power supply and the storage battery for equipment such that the second DC power supply unit generates a predetermined DC power from the second DC power supply unit and allows the predetermined DC power to be added to the DC power of the storage battery for equipment.

10. The rapid charger according to claim 7, wherein, where it is sensed that the storage battery for driving power is connected when the remaining amount of the storage battery for equipment is almost empty, the controller controls the second DC power supply unit such that the second DC power supply unit generates a predetermined DC power from the AC power of the AC power supply and allows the predetermined DC power to be supplied from the second DC power supply unit to the storage battery for driving power.

11. The rapid charger according to claim 10, wherein, where it is sensed that the storage battery for driving power is connected when the remaining amount of the storage battery for equipment is almost empty, the controller controls the first DC power supply unit such that the first DC power supply unit generates a predetermined DC power from the AC power of the AC power supply and allows the predetermined DC power to be supplied from the first DC power supply unit to the storage battery for driving power.

12. The rapid charger according to claim 7, further comprising a normally-opened switch installed between a positive electrode side of the storage battery for equipment and an output side of the second DC power supply unit,

wherein, when the AC voltage of the AC power supply is equal to or lower than a predetermined value, the controller allows the switch to be closed to use the storage battery for equipment as an emergency power supply.

15. The rapid charger according to claim 7, further comprising an auxiliary power supply connected in parallel to the storage battery for equipment.

19. The rapid charger according to claim 8,

wherein a plurality of the second DC power supply units are installed, and

wherein, when it is sensed that the storage battery for driving power is connected, the controller controls the second DC power supply unit connected to the storage battery for driving power to be connected to the AC power supply and the storage battery for equipment such that the second DC power supply unit generates a predetermined DC power from the second DC power supply unit and allows the predetermined DC power to be added to the DC power of the storage battery for equipment.