Non-aqueous electrolyte battery

• US 7,201,997 B2
• Filed: 12/25/2001
• Issued: 04/10/2007
• Est. Priority Date: 12/28/2000
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Tanaka, Keisuke, Ishida, Sumihito, Watanabe, Shoichiro, Kaiya, Hideo
• Primary Examiner(s): Ryan; Patrick Joseph
• Assistant Examiner(s): ANTHONY, JULIAN
• Application Number:
  US10/240,809
• Publication Number:
  US 20030134190A1
• Time in Patent Office: 1,932 Days
• Field of Search: 429/136, 429/162, 429/300, 429/142
• US Class Current: 429/162
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 50/105 Pouches or flexible bags
• CPC Class Codes: H01M 50/119 Metals
• CPC Class Codes: H01M 50/133 Thickness
• CPC Class Codes: H01M 50/178 for pouch or flexible bag cells
• CPC Class Codes: H01M 50/46 Separators, membranes or diaphragms characterised by their combination with electrodes
• CPC Class Codes: H01M 50/581 in response to temperature
• CPC Class Codes: H01M 6/12 with flat electrodes
• CPC Class Codes: H01M 6/181 with polymeric electrolytes
• 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

Abstract

Disclosed is a non-aqueous electrolyte battery comprising: a flat outer jacket comprising a metal sheet and having two primary flat portions facing each other; two active material layers of a first polarity respectively carried on inner surfaces of the flat portions; an electrode plate of a second polarity disposed in a position facing with each of the active material layers; and a separator layer interposed between each of the active material layers and the electrode plate of a second polarity, with the outer jacket serving as a current collector of the active material layers.

Claims

1. A non-aqueous electrolyte battery comprising:

an outer jacket comprising a metal sheet and having two primary flat portions facing each other;

two separate active material layers of a first polarity, each active material layer having a major surface entirely in contact with a respective inner surface of one of said flat portions;

an electrode plate of a second polarity disposed in a position facing each of said active material layers; and

a separator layer interposed between each of said active material layers and said electrode plate of a second polarity,

said outer jacket serving as a current collector of said active material layers.

2. The non-aqueous electrolyte battery in accordance with claim 1, further comprising:

an additional electrode plate of a first polarity disposed adjacent to said electrode plate of a second polarity with a separator layer interposed therebetween; and

an additional electrode plate of a second polarity disposed adjacent to said additional electrode plate of a first polarity with a separator layer interposed therebetween in a double-stacked form.

3. The non-aqueous electrolyte battery in accordance with claim 1, further comprising a lead electrically connected to said electrode plate of a second polarity, one end of said lead protruding outside from said outer jacket, and said lead being insulated from said outer jacket with resin.

4. The non-aqueous electrolyte battery in accordance with claim 3, wherein said lead is provided with an overcurrent breaking device sealed with resin at a portion thereof sandwiched between peripheral portions of said outer jacket.

5. The non-aqueous electrolyte battery in accordance with claim 1, wherein at least one of said separator layer and said active material layers contain a polymer electrolyte.

6. The non-aqueous electrolyte battery in accordance with claim 5, wherein said polymer electrolyte is a gel electrolyte comprising a liquid non-aqueous electrolyte and a polymer retaining the same.

7. The non-aqueous electrolyte battery in accordance with claim 1, wherein said outer jacket comprises a pair of metal sheets having flat portions facing each other or a single metal sheet folded so as to have two flat portions facing each other, and peripheral portions facing each other of said pair of metal sheets or peripheral portions facing each other of said single metal sheet are joined.

8. The non-aqueous electrolyte battery in accordance with claim 7, wherein said peripheral portions facing each other are joined by laser welding or ultrasonic welding.

9. The non-aqueous electrolyte battery in accordance with claim 1, wherein said metal sheet has a thickness of 10 to 100 μ

m.