METHOD FOR PREHEATING A SWITCHABLE BATTERY DEVICE

The invention relates to a battery pack type device including a first terminal (), a second terminal () and a plurality of energy storage elements between these terminals, each element including: a) at least one switch for connecting it with, or to disconnect it from, one or more other element(s); b) at least one conductor () for conducting a current, parallel to the element, when the latter is not connected with one or more other element(s); c) at least one switch () for establishing a short-circuit between the terminals of the battery when the latter is disconnected or supplies a zero voltage; d) a control circuit (), specifically adapted to: