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US 8,557,411 B2Granted
Secondary battery with a connection tab folded around an insulator and method of manufacturing the same
AssigneeSamsung SDI Co., Ltd.
InventorDeayon Moon
Life of this patent
Estimating the term…
Abstract
A secondary battery in which electric connection between an electrode tab of a bare cell and a connection tab of a protective circuit module is performed by welding the electrode tab of the bare cell to the connection tab of the protective circuit module that form a battery pack. A process is provided so that electrode tabs of two or more laminated bare cells are easily and precisely welded to a single, or more, connection tabs by a worker. The welding process is effectively performed and welding strength between the tabs increases.
Claims13
A method of manufacturing a secondary battery, comprising:
- an insulator composed of an electric insulation material, having two major surfaces and a plurality of sides;
- disposing an insulation layer on one surface of a connection tab;
- folding the connection tab along a center line of the connection tab directly contacting both major surfaces;
- spot-welding one of the electrode tabs of a first and second bare cell to the folded connection tab;
- and
- welding electrode leads of the connection tab to electrode leads of a protective circuit module (PCM).
3 more elements
A secondary battery, comprising:
- an insulator composed of an electric insulation material having two major surfaces and a plurality of sides;
- a connection tab folded 180 degrees along a center line to entirely surround and come in direct contact with the two major surfaces of the insulator;
- a first bare cell having electrode tabs;
- a second bare cell having electrode tabs, one of the electrode tabs of the first bare cell and one of the electrode tabs of the second bare cell series spot welded to the folded connection tab;
- and
- a protective circuit module (PCM) having electrode leads connected to the connection tab.
3 more elements
Dependencies are inferred from the claim text.