Method for treating electrode tabs of crude cell for lithium secondary battery, and crude cell and lithium secondary battery according to the method
First Claim
1. A method of treating electrode tabs of a crude cell provided with a plurality of anode plates having a plurality of respective anode grids, a plurality of cathode plates having a plurality of respective cathode grids, and a separator strip interposed, in a fold to fold manner, between said anode plates and said cathode plates which are disposed alternately including the steps of:
- (a) gathering said anode grids and said cathode grids, respectively, so that the grids are proximate or substantially parallel to a first surface;
(b) cutting an end portion of said anode grids and said cathode grids so that said anode grids and said cathode grids are of the shortest length required for being welded to a plurality of respective tab members;
(c) welding an anode tab member and a cathode tab member to respective said end portions of said anode grids and said cathode grids to form an anode side welded portion and a cathode side welded portion;
(d) attaching an insulating tape to said anode side welded portion and said cathode side welded portion so that said insulating tape can wrap said welded portions;
(e) bending said anode grids and said cathode grids at a plurality of respective first bend portions so that said grids can be close to a second surface which is opposite to said first surface, and be substantially perpendicular to said second surface; and
(f) bending said respective tab members at a plurality of respective second bend portions so that said tab members can be close to said respective first bend portion, and be substantially parallel to said first surface.
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Accused Products
Abstract
A method for treating electrode tabs of a crude cell for a lithium secondary battery, crude cell for a lithium secondary battery manufactured according to the method, and a lithium secondary battery employing the crude cell are disclosed. The method for treating electrode tabs of a crude cell provided with a plurality of anode plates having respective anode grids, a plurality of anode plates having respective anode grids, and a separator strip interposed, in a fold/fold manner, between the anode plates and the cathode plates which are disposed alternately, includes the steps of: (a) gathering the anode grids and the cathode grids, respectively, so that the grids can be close to a first surface and be substantially parallel to the first surface, and cutting the end portions of the anode grids and the cathode grids so that the anode grids and the cathode grids can have the shortest length required for being welded to respective tab members; (b) welding an anode tab member and a cathode tab member to respective end portions of the anode grids and the cathode grids to form an anode side welded portion and a cathode side welded portion having lengths as short as possible; (c) attaching insulating tape to the anode side welded portion and the cathode side welded portion so that the insulating tape can wrap the welded portions; (d) bending the anode grids and the cathode grids at respective first bend portions so that the grids can be close to a second surface which is opposite to the first surface, and be substantially perpendicular to the second surface; (e) bending the respective tab members at respective second bend portions so that the tab members can be close to the respective first bend portion, and be substantially parallel to the first surface.
10 Citations
8 Claims
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1. A method of treating electrode tabs of a crude cell provided with a plurality of anode plates having a plurality of respective anode grids, a plurality of cathode plates having a plurality of respective cathode grids, and a separator strip interposed, in a fold to fold manner, between said anode plates and said cathode plates which are disposed alternately including the steps of:
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(a) gathering said anode grids and said cathode grids, respectively, so that the grids are proximate or substantially parallel to a first surface; (b) cutting an end portion of said anode grids and said cathode grids so that said anode grids and said cathode grids are of the shortest length required for being welded to a plurality of respective tab members; (c) welding an anode tab member and a cathode tab member to respective said end portions of said anode grids and said cathode grids to form an anode side welded portion and a cathode side welded portion; (d) attaching an insulating tape to said anode side welded portion and said cathode side welded portion so that said insulating tape can wrap said welded portions; (e) bending said anode grids and said cathode grids at a plurality of respective first bend portions so that said grids can be close to a second surface which is opposite to said first surface, and be substantially perpendicular to said second surface; and (f) bending said respective tab members at a plurality of respective second bend portions so that said tab members can be close to said respective first bend portion, and be substantially parallel to said first surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification