| abstract |
An object of the present invention is to provide a sealed battery capable of suppressing a decrease in the sealing performance of the battery. A sealed battery according to the present invention includes an electrode laminate including a positive electrode, a negative electrode, and a separator, an electrolyte, an exterior body, a first lead terminal, and a second lead terminal. Each lead terminal includes an electrode connection portion, an external connection portion, and a sealing portion. The first or second lead terminal includes a conductive portion. The conductive portion includes at least a part of the conductive portion. It is provided so as to be in direct or indirect contact with the outer surface, and the exterior body has a conductivity or apparent thermal conductivity of 10 W / (m · K) or more and 250 W / (m · K) or less. The accommodated electrode laminate and electrolyte have an effective thermal conductivity in a steady state of 10 W / (m · K) or more and 100 W / (m · K) or less. [Selection] Figure 2 |