Welded structure in battery, forming method of the same, secondary battery cell and secondary battery module
AssigneeHitachi Vehicle Energy, Ltd.
InventorsKohtaro Ikeda, Eiichi Isono, Shin Onose, Hayato Koguchi
Life of this patent
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Abstract
A plating layer 4 is formed on a surface of a battery cover 3, and a peripheral edge part 37b of a cover case 37 is arranged on an upper surface of the plating layer 4. A welding part 40 is formed at a tip part of the peripheral edge part 37b. The welding part 40 includes a melted part 41 in which the tip of the peripheral edge part 37b is melted, and an elution part 42 flowing from the tip onto the plating layer 4, and the melted part 41 and the elution part 42 are welded to the plating layer 4 in the upper surface of the plating layer 4.
Claims22
A welded structure in a battery, comprising:
- a first conductive metal member;
- a metal layer provided on a surface of the first conductive metal member by plating;
- and
- a second conductive metal member made of a material different from that of the first conductive metal member, wherein the first conductive metal member and the second conductive metal member are joined through the metal layer, and a charge and discharge current flows, and wherein
- at least a part of a tip part of the second conductive metal member is provided with a melted part in which the tip is melted and an elution part flowing from the tip onto the metal layer, the melted part and the elution part are welded to the metal layer in a surface of the metal layer, and
- a depth of the melted part and the elution part welded to the metal layer does not reach the surface of the first conductive metal member.
(canceled)
A forming method of a welded structure in a battery, comprising:
- a first step of arranging a tip of a second conductive member made of a material different from that of a first conductive metal member on one surface of a metal layer formed on a surface of the first conductive metal member by plating;
- and
- a second step in which the tip of the second conductive metal member is melted to form a melted part and an elution part flowing from the tip onto the one surface of the metal layer, and the melted part and the elution part are welded to the metal layer in the surface of the metal layer, wherein
- welding is performed and a depth of the melted part and the elution part welded to the metal layer does not reach the surface of the first conductive metal member.
(canceled)
Dependencies are inferred from the claim text.