| abstract |
Battery performance is ensured by devising a thin film shape, and manufacturing time is shortened. Further, the electrodes are taken out without using lead wires or the like. In a thin-film solid secondary battery 1 in which a positive electrode current collector layer 20A, a positive electrode active material layer 30, a solid electrolyte layer 40, a negative electrode active material layer 50, and a negative electrode current collector layer 20B are laminated on a substrate 10. One end of each of the positive electrode current collector layer 20A and the negative electrode current collector layer 20B extends outward from the movable part of the battery and is exposed to the atmosphere to form electrode extraction portions 21a and 21b. By devising the shapes and positions of the electrode lead-out portions 21a and 21b, a plurality of battery cells can be connected in series and in parallel with only a thin film without using lead wires or the like. [Selection] Figure 2 |