| 摘要 |
PROBLEM TO BE SOLVED: To provide a bipolar secondary battery suppressing concentration of charge and discharge currents on a specific portion to prevent heating of a power generation element. SOLUTION: This bipolar secondary battery 100 has a unit power generation element 31, positive electrode and negative electrode current collecting plates 101, 102, and a current control layer 50. In the unit power generation element 31, a bipolar electrodes 21 having a positive electrode active material layer 23 formed on one side of a collector 22 and a negative electrode active material layer 24 formed on the other side are laminated through an electrolyte layer 25. The positive electrode and negative electrode collecting plates 101, 102 are disposed face to face each other at both ends in the laminated direction of a power generation element 30 formed by laminating a plurality of the unit power generation elements 31. The current control layer 50 is laminated somewhere on the route from the positive electrode current collecting plate 101 to the negative electrode current collecting plate 102, including the positive electrode and negative electrode current collecting plates 101, 102, and electric resistance at a portion where the temperature of the power generation element 30 has risen increases. COPYRIGHT: (C)2011,JPO&INPIT |
