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US 2022/0045367 A1Published application
Battery
AssigneeMurata Manufacturing Co., Ltd.
InventorsDaiki NISHIIE, Hideaki TOKUGAWA, Yoshiichi HORIKOSHI
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Abstract
A battery is provided. The battery includes an electrode body having a winding structure. The electrode body includes a first electrode having a first belt shape, a second electrode having a second belt shape, and a separator having a third belt shape, and an electrolyte. The separator is provided between the first electrode and the second electrode.
Claims19
A battery comprising:
- an electrode body having a winding structure, the electrode body including:
- a first electrode having a first belt shape;
- a second electrode having a second belt shape;
- and
- a separator having a third belt shape, the separator being provided between the first electrode and the second electrode;
- and
- an electrolyte, wherein
- an electrode that is located at an innermost periphery from among the first electrode and the second electrode includes:
- a current collector that includes a first principal face and a second principal face;
- a first active material layer that is provided on the first principal face in such a way that a first current-collector exposed part is provided at an end on a winding center side of the electrode;
- a second active material layer that is provided on the second principal face in such a way that a second current-collector exposed part is provided at the end on the winding center side of the electrode;
- a first insulating member;
- and
- a second insulating member, wherein
- the first insulating member covers a boundary between the first active material layer and the first current-collector exposed part, and the first current-collector exposed part,
- the second insulating member covers a boundary between the second active material layer and the second current-collector exposed part, and the second current-collector exposed part,
- the first insulating member and the second insulating member overlap each other to sandwich the current collector,
- widths of the first insulating member and the second insulating member in a shorter side direction of the electrode are greater than a width of the electrode in the shorter side direction of the electrode,
- the second insulating member is located on the second principal face between the end on the winding center side of the electrode and an end of the first active material layer, and
- the first insulating member is located on the first principal face between the end on the winding center side of the electrode and an end of the second active material layer.
17 more elements
Dependencies are inferred from the claim text.