Method for transferring energy storage cells of an energy storage device and energy storage device with rechargeable energy storage cells

摘要

The invention relates to a method for heating energy storage cells of an energy storage device having a plurality of energy storage modules connected in series in at least one energy supply strand, each comprising an energy storage cell module having at least one energy storage cell, and a coupling device with coupling elements, which are adapted to the energy storage cell module selectively to switch or bypass in the respective power supply line. In this case, the method comprises the steps of transmitting electrical energy from the energy storage cell module of at least one first energy storage module into a DC voltage intermediate circuit coupled to the energy storage device by driving the coupling device of the first energy storage module for coupling the energy storage cell module of the first energy storage module to the DC voltage intermediate circuit for a first predetermined period of time, and Transmitting the electrical energy transmitted in the DC voltage intermediate circuit into the energy storage cell module of at least one second energy storage module by activating the coupling device of the second energy storage module for coupling the energy storage cell module of the second energy storage module to the DC intermediate circuit for a second predetermined period of time after the first predetermined period of time has elapsed.