Murata Manufacturing Co., Ltd.

Morimichi Ozaki

Masahiro Otsuka

Naoto Akizuki

Provided is a secondary battery including an electrode assembly and an electrolyte enclosed in an exterior case. The electrode assembly includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The secondary battery includes a spacer positioned between the electrode assembly and an exterior case, and the electrode assembly includes current collecting tabs of a positive electrode and a negative electrode each protruding from the same end face. The spacer is positioned between an end face, of the electrode assembly, from which the current collecting tab protrudes and the exterior case, and at least one of the current collecting tabs of the positive electrode or the negative electrode has a bent shape between the electrode assembly and the spacer.

Secondary battery

Provided is a secondary battery including an electrode assembly and an electrolyte enclosed in an exterior case. The electrode assembly includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. In the secondary battery, the electrode assembly includes current collecting tabs of the positive electrode and the negative electrode protruding from the same end face, and the current collecting tabs of the positive electrode and the negative electrode are positioned at different distances from a central axis along a direction.

Growing community of inventors

Kyoto, Japan

Morimichi Ozaki