Energy storage device for storing and recovering mechanical energy, has spring-elastic element that is stretched along radial or circumferential direction of housing having two housing portions which are rotated relative to other

摘要

The energy storage device has housing (1) having two housing portions (2) that are mounted relative to one another. The housing portions are provided with a terminal for a drive, an output and a counter bearing. The drive is provided for causing rotation of one of the housing portions along circumferential direction of the housing relative to other. A spring-elastic element (6) is stretched along radial direction or circumferential direction of the housing for energy storage.