| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrochemical device capable of avoiding an increase in connection resistance between the top surface of a current collector film and the surface on one electrode side of a power storage element.SOLUTION: In an electrochemical device, the bottom surface 11a1 of a first recess 11a of a case 11 has an opening outline smaller than that of the undersurface of a first electrode sheet 13a of a power storage element 13, and a second recess 11b having a predetermined depth D11b is formed on the bottom surface 11a1. A power collector film 19 having a thickness T19 smaller than the depth of the second recess 11b is provided on the bottom surface 11b1 of the second recess 11b. Between the bottom surface 11a1 of the first recess 11a and the top surface of the power collector film 19, an adhesive material reservoir AR is formed having the depth corresponding to a dimension (=D11b-T19) obtained by subtracting the thickness T19 of the power collector film 19 from the depth D11b of the second recess 11b. A first conductive adhesive layer 20 is provided so as to be filled in the adhesive material reservoir AR. |
