Patent ID: 9190639
Filing Date: 2015-11-17
Classification: A45C,A45F,H01M,H02J,H04B,H04M,Y02E

Abstract:
1. A protecting case comprising: a protecting case body portion; a sliding case portion comprising an auxiliary battery cell, the sliding case portion being electrically connected with an electronic device, supplying power to the electronic device, and being inserted into/drawn out from the protecting case body portion by sliding movement; an input configured to receive power from an external power source; a switch configured to control charging of the auxiliary battery cell in response to the input being electrically connected to the external power source; and a controller configured to determine whether to use power received from the external power source to charge the auxiliary battery cell or to directly charge a battery cell of the electronic device without charging the auxiliary battery cell according to on/off states of the switch, wherein the controller senses physical mounting or separation of the auxiliary battery cell.