Method of detecting dimensional changes in energy storage device

The invention relates to a method for detecting dimensional changes in energy storage devices, in the field of energy storage devices, in particular energy storage devices for capacitors or batteries. A method for estimating a current quality of an energy storage device (10), comprising the steps of: measuring a first change in length of a first surface of the energy storage device (10); measuring a temperature and/or a second length change of a second surface of the energy storage device (10); and estimating a current quality of the energy storage device (10) based on the first change in length of the energy storage device (10) and the temperature and/or the second change in length. 本发明涉及检测储能设备中的尺寸变化的方法，储能设备的领域，特别是用于电容器或蓄电池的储能设备的领域。一种用于估计储能设备(10)的当前品质的方法，包括以下步骤：测量储能设备(10)的第一表面的第一长度变化；测量储能设备(10)的第二表面的温度和/或第二长度变化；以及基于储能设备(10)的第一长度变化以及温度和/或第二长度变化来估计储能设备(10)的当前品质。