POSITIVE ELECTRODE LEAD AND ALKALINE SECONDARY BATTERY

摘要

A positive electrode lead of the present invention comprises: a strip-shaped first lead half body electrically connected to a sealing body of a nickel-hydrogen secondary battery; a strip-shaped second lead half body electrically connected to a positive electrode of an electrode group of the nickel-hydrogen secondary battery; a PTC thermistor joined between the first lead half body and the second lead half body; and a protective member covering a portion of the positive electrode lead where the PTC thermistor is joined. The second lead half body includes a portion to be bent on the outer side of the portion covered with the protective member. A recessed groove is formed in the portion covered with the protective member and has a shape elongated in a direction intersecting with a bend line of the portion to be bent.

主权项

1. A positive electrode lead of an alkaline secondary battery comprising an exterior can the upper end of which is open; an electrode group formed by stacking positive electrodes and negative electrodes with separators interposed thereamong and housed in the exterior can along with an alkaline electrolytic solution; and a sealing body fixed to the open end of the exterior can while being insulated and including a cap plate for sealing the opening and a positive electrode terminal electrically connected to the cap plate, the positive electrode lead being disposed between the electrode group and the sealing body to electrically connect the positive electrodes of the electrode group and the sealing body and comprising:
a strip-shaped first lead half body electrically connected to the sealing body; a strip-shaped second lead half body electrically connected to the positive electrode; a PTC thermistor joined between the first lead half body and the second lead half body; and a protective member covering a portion of the positive electrode lead where the PTC thermistor is joined, wherein the second lead half body is provided with a portion to be bent when the second lead half body is disposed between the electrode group and the sealing body on the outer side of the portion covered with the protective member, a recessed groove is formed in the portion covered with the protective member, and the recessed groove has a shape elongated in a direction intersecting with a bend line of the portion to be bent.