Patent ID: 9054541
Filing Date: 2015-06-09
Classification: H01M,H02J,Y02E

Abstract:
1. A portable power source apparatus capable of holding circular cylindrical batteries comprising: a main case with a circular cylindrical shape open at one end and having a bottom, the main case being made with an outside diameter only slightly larger than a circular cylindrical battery, and capable of holding a plurality of circular cylindrical batteries that extend lengthwise, are stacked in the lengthwise direction, and are connected in series; a cap section with an approximately circular cylindrical shape that closes-off the open end of the main case in a detachable manner, the cap section being provided with a closing surface facing the open end of the main case and an exposed surface externally exposed at an end of the cap section that is opposite from the closing surface; a circuit board with a flat-board-shape housed in the cap section with voltage conversion circuitry for converting the voltage of the circular cylindrical batteries contained in the main case; a power supply terminal disposed in the exposed surface of the cap section and capable of outputting power from the circular cylindrical batteries contained in the main case; and a conducting lead-plate configured to contact the circular cylindrical battery electrode that is furthest away from the cap section to electrically connect the electrode to the circuit board, wherein the main case includes: wherein the lead-plate is retained at a junction of the upper case and the lower case in an orientation perpendicular to an interface plane of the junction, and the lead plate is inserted within a thickness of the inner case between an inner surface and an outer surface of the inner case in a non-contact manner with respect to curved surfaces of the circular cylindrical batteries and the outer case.