Battery and method for manufacturing the same, assembled battery, and electronic apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsRikako IMOTO, Yoshiichi HORIKOSHI, Hideki NAKAI
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Abstract
A battery includes a wound electrode body with a substantially cylindrical shape, and an exterior material. The wound electrode body includes a positive electrode, a negative electrode, and a separator. The exterior material is configured to cover the wound electrode body. In at least one round from an outermost periphery of winding of the wound electrode body, one or more of a positive electrode, a negative electrode, a positive electrode current collector and a negative electrode current collector include at least one convex portion projecting in an outer peripheral direction.
Claims11
A battery comprising:
- a wound electrode body with a substantially cylindrical shape, wherein the wound electrode body includes a positive electrode, a negative electrode, and a separator, and
- an exterior material configured to cover the wound electrode body, wherein
- in at least one round from an outermost periphery of winding of the wound electrode body, one or more of a positive electrode, a negative electrode, a positive electrode current collector and a negative electrode current collector include at least one convex portion projecting in an outer peripheral direction.
A method for manufacturing a battery, comprising:
- forming a first film-like exterior material having a first housing part with a substantially partially cylindrical shape and a second film-like exterior material having a second housing part with a substantially partially cylindrical shape;
- housing a wound electrode body in the first housing part and the second housing part;
- when heat-molding the wound electrode body by thermal fusion, using a mold without rectangular corners or a mold in which an appropriate R-shape is formed at the corners;
- and
- forming at least one or more convex portions projecting in an outer peripheral direction on an outer peripheral surface of the wound electrode body.
Dependencies are inferred from the claim text.