| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electricity storage device improved in mass productivity and suppressed in increase of internal resistance, thereby achieving favorable reliability. <P>SOLUTION: In the electricity storage device, a positive electrode collector exposed part and a negative electrode collector exposed part are provided in each of one long sides of a positive electrode collector and a negative electrode collector, respectively, the long sides being in parallel with the wound directions of the positive electrode collector and the negative electrode collector, and the positive electrode collector exposed part and the negative electrode collector exposed part are laminated so as to be protruded in opposite directions each other. A positive electrode external terminal 1 and a negative electrode external terminal 2 are electrically connected to the positive electrode collector exposed part and the negative electrode collector exposed part located on one plane part of the outermost periphery of an electricity storage element 110, respectively, and are protruded in parallel to the outside from one side of an outer sheath material, the side being perpendicular to a wound direction of the electricity storage element. <P>COPYRIGHT: (C)2013,JPO&INPIT |
