| 摘要 |
The purpose of the present invention is to provide an electricity storage element having a circuit unit housed in an exterior body, while suppressing deterioration of capacitance of the electricity storage element. An electricity storage element 1 is provided with an exterior body 2, a plurality of electricity storage elements 3 housed in the exterior body 2, and a circuit unit 20A housed in the exterior body 2. At least one electricity storage element 3 of the electricity storage elements 3 is a small electricity storage element 3A having a smaller shape compared with other large electricity storage elements 3B, and the circuit unit 20A is disposed between the exterior body 2 and the small electricity storage element 3A. |
