BATTERY FOR AUTOMOTIVE ELECTRICAL SYSTEM

• US 20150104676A1
• Filed: 06/04/2013
• Published: 04/16/2015
• Est. Priority Date: 06/11/2012
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Okada, Wataru, Yasutomi, Fumio, Saito, Masao
• Application Number:
  US14/399,844
• Publication Number:
  US 20150104676A1
• Time in Patent Office: Days
• US Class Current: 429/7
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/12 Construction or manufacture
• CPC Class Codes: H01M 10/345 Gastight metal hydride accumulators
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 16/00 Structural combinations of different types of electrochemical generators
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/249 specially adapted for aircraft or vehicles, e.g. cars or trains constructional details of batteries specially adapted for electric vehicles B60L50/64
• CPC Class Codes: H01M 50/296 characterised by terminals of battery packs terminals of batteries H01M50/543
• CPC Class Codes: H01M 50/507 comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
• CPC Class Codes: H01M 50/512 Connection only in parallel
• CPC Class Codes: H01M 50/517 by fixing means, e.g. screws, rivets or bolts
• CPC Class Codes: H01M 50/522 Inorganic material
• CPC Class Codes: H01M 50/548 on opposite sides of the cell
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery for automotive electrical system comprises a lead battery having an outer shape of a rectangular box and having length longer than the width, and a sub-battery connected in parallel to the lead battery. A first main terminal as a positive electrode terminal and a second terminal as a negative electrode terminal are disposed at both ends adjacent to a long side on an upper surface. The first main terminal as an output terminal of the lead battery is connected to a vehicle lead line, and the second main terminal is connected to the sub-battery. The sub-battery has a structure in which plural cells are stored in an outer case, and the outer case is disposed outside an end portion in the lengthwise direction of the lead battery and adjacent to the second main terminal of the lead battery, and the lead battery and the sub-battery are coupled.

Claims

1. A battery for automotive electrical system comprising:

a lead battery having an outer shape of a rectangular box, and having the length (L) thereof which is longer than the width (W) thereof;

a sub-battery being connected in parallel to the lead battery; and

a first main terminal as a positive electrode terminal and a second main terminal as a negative electrode terminal being disposed at both ends adjacent to a long side on an upper surface of the rectangular box,

wherein the first main terminal as an output terminal is connected to a lead wire for a vehicle, and the second main terminal is connected to the sub-battery,

wherein the sub-battery has a structure in which plural cells are stored in an outer case, and the outer case is disposed outside an end portion in the lengthwise direction of the lead battery and adjacent to the second main terminal of the lead battery, and the lead battery and the sub-battery are coupled.

2. The battery for automotive electrical system according to claim 1, wherein in the sub-battery a second sub-terminal is connected to the second main terminal of the lead battery, and is disposed at an end to the second main terminal of the lead battery on an upper surface of the outer case.

3. The battery for automotive electrical system according to claim 2, wherein in the sub-battery a first sub-terminal and the second sub-terminal are disposed at both ends in the width direction on an upper surface of the outer case, and the second sub-terminal is connected to the second main terminal of the lead battery.

4. The battery for automotive electrical system according to claim 3, wherein the first main terminal of the lead battery and the first sub-terminal of the sub-battery are connected by a first bus bar disposed on an upper surface of the lead battery and an upper surface of the first bus bar is insulated.

5. The battery for automotive electrical system according to claim 1, wherein a width size (w) of the outer case of the sub-battery does not project from the width of the lead battery.

6. The battery for automotive electrical system according to claim 1, wherein a height size (h) of the outer case of the sub-battery does not project from the height of the lead battery.

7. The battery for automotive electrical system according to claim 1, wherein the width size (w) of the outer case of the sub-battery is approximately the same as the width size (W) of the lead battery.

8. The battery for automotive electrical system according to claim 1, wherein the height size (h) of the outer case of the sub-battery is approximately the same as the height size (H) of the lead battery.

9. The battery for automotive electrical system according to claim 1, wherein the sub-battery is any one of a nickel hydride battery, a nickel cadmium battery, or a non-aqueous electrolyte battery.

10. The battery for automotive electrical system according to claim 1, further comprising:

an output switch being connected in series to the sub-battery; and

a control circuit carrying out ON/OFF control of the output switch,

wherein the control circuit detects any one of a remaining capacity or a voltage of the sub-battery, and controls the output switch.

11. The battery for automotive electrical system according to claim 2, wherein the lead battery and the sub-battery are integrally connected by connecting part, and the main terminal of the lead battery and the sub-terminal of the sub-battery are connected by bus bar made of metal, and the metal bus bar is used as the connecting part.

12. The battery for automotive electrical system according to claim 11,

wherein the second main terminal of the lead battery and the second sub-terminal of the sub-battery are connected by the bus bar, and the bus bar is used as the connecting part.

13. The battery for automotive electrical system according to claim 11, wherein the first main terminal of the lead battery and the first sub-terminal of the sub-battery are connected by the bus bar, and the bus bar is used as the connecting part.