Battery power circuit and automobile battery power circuit

• US 20060055367A1
• Filed: 11/08/2005
• Published: 03/16/2006
• Est. Priority Date: 05/09/2003
• Status: Abandoned Application

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Iwata, Akihiko, Kikunaga, Toshiyuki
• Application Number:
  US11/268,472
• Publication Number:
  US 20060055367A1
• Time in Patent Office: Days
• US Class Current: 320/103
• CPC Class Codes: F02N 11/0866 comprising several power sources, e.g. battery and capacitor or two batteries
• CPC Class Codes: F02N 11/087 Details of the switching means in starting circuits, e.g. relays or electronic switches
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 7/0016 using shunting, discharge or bypass circuits
• 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: H02M 3/158 including plural semiconductor devices as final control devices for a single load
• CPC Class Codes: H02M 3/1582 Buck-boost converters H02M3/1584 takes precedence
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A load is connected to a first battery group. The first battery group and a second battery group are connected in series to each other. A bidirectional DC/DC converter for electric power migration between the first battery group and the second battery group is provided.

Claims

1. A battery power circuit comprising:

a first battery group connected to a load;

a second battery group connected in series with said first battery group; and

a bidirectional DC/DC converter for electric power migration between said first battery group and said second battery group,

wherein a charging capacity of said first battery group is different from a charging capacity of said second battery group.

3. The battery power circuit according to claim 1, wherein said first battery group has a higher charging capacity than said second battery group.

2. A battery power circuit comprising:

a first battery group connected to a load;

a second battery group connected in series with said first battery group; and

a bidirectional DC/DC converter for electric power migration between said first battery group and said second battery group

wherein,

said second battery group is constituted by capacitors.

4. The battery power circuit according to claim 2, wherein a diode is connected in parallel to opposite ends of a group of said capacitors.