Copper member for battery

• US 20030194608A1
• Filed: 02/07/2003
• Published: 10/16/2003
• Est. Priority Date: 02/20/2002
• Status: Abandoned Application

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Yamada, Kazuki, Yamashita, Rikiya, Hirai, Yuichi, Okushita, Masataka
• Application Number:
  US10/360,909
• Publication Number:
  US 20030194608A1
• Time in Patent Office: Days
• US Class Current: 429/178
• CPC Class Codes: C23C 2222/10 Use of solutions containing trivalent chromium but free of hexavalent chromium
• CPC Class Codes: H01M 50/55 on the same side of the cell
• CPC Class Codes: H01M 50/552 characterised by their shape
• CPC Class Codes: H01M 50/557 Plate-shaped terminals
• CPC Class Codes: H01M 50/562 characterised by the material
• CPC Class Codes: H01M 50/571 Methods or arrangements for affording protection against corrosion; Selection of materials therefor
• CPC Class Codes: H01R 13/521 Sealing between contact members and housing, e.g. sealing insert
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention provides a copper member having a high adhesion stability, free from corrosion caused by hydrofluoric acid generated from the electrolyte of the battery terminal and water. A composite covering layer of an aminated phenol phenol polymer, a trivalent chromium compound and a phosphorus compound on the surface of a foil-shaped or sheet-shaped copper member. The composite covering layer has an aminated phenol polymer deposit weight from 1 to 200 mg/m², a chromium deposit weight from 0.5 to 50 mg/m², and a phosphorus deposit weight of 0.5 to 5 mg/m².

Claims

1. A copper member for battery, having a composite covering layer comprising an aminated phenol polymer, a trivalent chromium compound and a phosphorus compound formed on the surface of a foil-shaped, sheet-shaped or plate-shaped copper member.

2. A copper member for battery according to claim 1, wherein said composite covering layer has an aminated phenol polymer deposit weight from 1 to 20 mg/m², a chromium deposit weight from 0.5 to 50 mg/m², and a phosphorus deposit weight from 0.5 to 5 mg/m².

3. A copper member for battery according to claim 1, wherein an alkaline degreasing treatment is applied to the surface of said copper member prior to forming said composite covering layer.

4. A copper member for battery according to claim 1, wherein a pickling treatment is applied to the surface of said copper member prior to forming said composite covering layer.

5. A copper member for battery according to claim 1, wherein an alkaline degreasing treatment and a pickling treatment are applied to the surface of said copper member prior to forming said composite covering layer.

6. A battery terminal comprising a copper member according to claim 1.

7. A battery, wherein at least one terminal is a battery terminal according to claim 6, having the battery and a battery packaging material for packaging a main body of the battery.