Patent ID: 9118070
Filing Date: 2015-08-25
Classification: H01M,Y02E

Abstract:
1. An energy storage element comprising: a container; an electrode assembly housed in the container; an electrode terminal provided in the container; and a current collector which electrically connects the electrode terminal and the electrode assembly, wherein the current collector is positioned inside the container, and includes: a plurality of arm parts which extend from the base part in a direction away from the electrode terminal and which are connected to the electrode assembly in a state that the plurality of arm parts sandwich the electrode assembly, wherein the plurality of arm parts comprises paired arm parts which are an outermost two of the plurality of arm parts and are apart from each other with a spacing greater than a width of the base part in a direction in which the paired arm parts are arranged wherein the paired arm parts include: wherein the paired bridge parts are apart from each other with spacings that are smaller at positions closer to the base part.