Patent ID: 8043740
Filing Date: 2011-10-25
Classification: H01M

Abstract:
1. A flat-shaped battery comprising: an electrode material including a positive material containing a positive active material and a negative material containing a negative active material; a battery case including a positive case having an opening to house therein the positive material and a negative case having an opening to house therein the negative material, the positive case being a positive electrode and the negative case being a negative electrode; a plurality of protruding members which are fixed to an inner surface of the battery case, the protruding members extending inwardly from the inner surface of the battery case and being inserted in the electrode material housed in the battery case, and an elastic member which is placed between a surface of the electrode material into which the protruding members are inserted and the inner surface of the battery case to bias the electrode material toward an inner surface opposite to the inner surface of the battery case, wherein the protruding members and the elastic member are integrally formed.