Battery unit for electrical hand tool, has inlet opening with opening unit for supplying cool air during charging process of rechargeable battery cell in open position, where inlet opening is closed in closing position

摘要

The unit (10) has an inlet opening for cool air to cool a rechargeable battery cell, and an outlet opening (16) for the cool air. The inlet opening comprises an opening unit (20) for supplying the cool air during a charging process of the rechargeable battery cell in an open position. The opening unit comprises a closing position, and the inlet opening is closed in the closing position. The opening unit is formed as a flexible lip, which is closed in an unloaded position of the inlet opening. The unit and a charging device form a charging system. Independent claims are also included for the following: (1) a charging device for a battery unit (2) a system comprising the battery unit.