Patent ID: 7994753

Claim:
A battery pack, comprising: a battery can; a case housing the battery can; and a pair of a first conductive surface and a second conductive surface, each having an elongated shape so as to be arranged side by side in parallel on a same plane along two edges facing each other, and respectively connected via a plurality of chip capacitors to the battery can through which high frequency current runs, respectively, the chip capacitors being arranged along a longitudinal direction of the first conductive surface and the second conductive surface, respectively, wherein upon the battery pack being installed in an electronic apparatus that includes an installation section on which the battery pack is attachably and detachably installed, and a circuit board disposed therein and an antenna disposed on the circuit board, wherein on an inner surface of the installation section of the electronic apparatus, a plurality of ground terminals which are connected to a ground layer of the circuit board and to which the first and second conductive surfaces are to be pushed are disposed; and upon the battery pack being installed in the installation section, conduction is established between the first and second conductive surfaces and the ground terminals, and a longitudinal direction of the first and second conductive surfaces is arranged to intersect with a direction in which a high-frequency current propagates from the antenna side to form an electromagnetic shielding structure.