Key for motor vehicle with integrated rechargeable or regeneratable energy storage device that can be recharged by feeding in energy via motor vehicle ignition or steering wheel lock

摘要

The key has an integrated rechargeable or regeneratable energy storage device that can be recharged by feeding in energy via the ignition or steering wheel lock of the motor vehicle. The supply of electrical energy results automatically during car use via a contact on the key or through an inductive transmission device. Energy supply or charging of the energy storage device may be regulated by means of the charging electronics, and may be shown on a display unit on the key.