Patent ID: 9620300
Date: 2017-04-11
CPC Classifications: H01G,Y02E,Y02P

Claim:
1. An electrochemical device comprising: an element body in which a pair of a first inner electrode and a second inner electrode are laminated to sandwich a separator layer; an exterior sheet covering the element body; a first lead terminal which is electrically connected to the first inner electrode and is drawn to an outside of the exterior sheet; and a second lead terminal which is electrically connected to the second inner electrode and is drawn to the outside of the exterior sheet, wherein a proof stress of the exterior sheet is 390 to 980 N/mm a hardness of the exterior sheet is 230 to 380 Hv in Vickers hardness (JIS Z2244), a thickness t of the element body is 0.5 mm or less, and a width W4 from an edge part of a pair of electrodes of the element body to a most inner end of a seal part is 1 mm or larger.