| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery in which deviation of the salt concentration distribution of an electrolyte can be suppressed in the electrode during high rate charge and discharge, while suppressing occurrence of dendrite.SOLUTION: A secondary battery includes a compression member 40 for applying a load in the lamination direction of an electrode body via a case. The compression member 40 has a first loading part 42 for applying a load to an end of the electrode body when generating heat and expanding, and a second loading part 44 for applying a load to a central part of the electrode body. The first loading part 42 and second loading part 44 are constituted to satisfy at least one of the conditions:(1) the thermal expansion coefficient of the first loading part 42 is larger than that of the second loading part 44, and (2) the elastic modulus of the first loading part 42 is larger than that of the second loading part 44. |
