| 摘要 |
PROBLEM TO BE SOLVED: To provide a bipolar secondary battery in which a wiring board for outputting potential of a current collector of each unit battery is hardly separated from the current collector.SOLUTION: The bipolar secondary battery 100 has a power generation element 30, a first connection portion 51, and a second connection portion 52. The power generation element 30 is formed of a bipolar electrode 21 in which a positive electrode active material layer is formed on one surface of the current collector 22 and a negative electrode active material layer is formed on other surface, being laminated through an electrolyte layer 25. The first connection portion 51 is pinched between the current collectors 22b, 22c adjacent in lamination direction, and conductive layers 51b, 51c which are in contact with the current collectors 22b, 22c are formed on the both sides of an insulating layer 51a. The second connection portion 52 is arranged between the adjacent current collectors 22b, 22c and outputs potential of the current collectors 22b, 22c through the first connection portion 51. |
