Li-ion and /or li-ion polymer battery with shielded leads

• US 20040081890A1
• Filed: 08/21/2002
• Published: 04/29/2004
• Est. Priority Date: 02/10/2000
• Status: Active Grant

• Current Assignee: NGK Spark PLUG Company Limited
• Original Assignee: NGK Spark PLUG Company Limited
• Inventors: Smith, Jeffrey M., Xing, Xuekun
• Granted Patent: US 6,790,557 B2
• Time in Patent Office: Days
• US Class Current: 429/241
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 4/13 Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
• CPC Class Codes: H01M 4/74 Meshes or woven material; Expanded metal
• CPC Class Codes: H01M 50/193 Organic material
• 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

A battery section for a Li-ion and/or Li-ion polymer cell, comprised of:

a planar metal mesh layer having a body portion and a coplanar tab portion defining a battery lead extending from one edge of the mesh layer;

electrode film laminated to opposite surfaces of the body portion of the metal mesh layer; and

a protective layer on at least one side of the tab, the protective layer having a portion of the tab that is adjacent to the electrode film, the protective layer comprised of an outer polymer layer and an inner adhesive layer adhering the outer polymer layer to the portion of the tab.

Claims

1. A battery section for a Li-ion and/or Li-ion polymer cell, comprised of:

a planar metal mesh layer having a body portion and a coplanar tab portion defining a battery lead extending from one edge of said mesh layer;

electrode film laminated to opposite surfaces of said body portion of said metal mesh layer; and

a protective layer on at least one side of said tab, said protective layer having a portion of said tab that is adjacent to said electrode film, said protective layer comprised of an outer polymer layer and an inner adhesive layer adhering said outer polymer layer to said portion of said tab.

2. A battery section as defined in claim 1, wherein said protective layer is on both sides of said tab.

3. A battery section as defined in claim 2, wherein said outer polymer layer has a thickness between about 0.0005 inches and about 0.0015 inches.

4. A battery section as defined in claim 3, wherein said outer polymer layer is comprised of polyimide.

5. A battery section as defined in claim 3, wherein said outer polymer layer is comprised of polyester.

6. A battery section as defined in claim 4, wherein said inner adhesive layer is comprised of silicone.