Abstract: There is provided an electric power supply system comprising a secondary battery unit which stores electric power generated by a solar cell module, a charge switch circuit which disconnects and connects a charge path between the solar cell module and the secondary battery unit, and a charge and discharge control unit which controls the disconnection and the connection of the charge path by the charge switch circuit, wherein, in the charge switch circuit, the disconnection and the connection of the charge path is controlled by an output voltage of the solar cell module when the charge switch circuit cannot be controlled by the charge and discharge control unit.

Abstract: The battery assembly control system comprises a master controller, a power converter management unit, and power converters. Five battery units are connected in parallel to the charging and discharging main bus of one of the power converters. A switch board, including a plurality of second protection resistors, a plurality of switches, and a first protection resistor, is provided between each of the battery units and the charging and discharging main bus. The second protection resistors have a positive temperature coefficient and have a function of reducing the voltage difference among the four battery pack columns connected in parallel to the sub-bus of each of the battery units. The first protection resistor has a function of preventing excess current.

Abstract: A connecting member coupled to four pistons that reciprocate within cylinder bores is coupled to a crankpin of a crankshaft, and a pinion member which integrally rotates with a crankshaft portion is capable of rolling along the inner periphery of an internal gear member and has an outer diameter equal to ½ of an inner diameter of the internal gear member. The crankpin executes a reciprocating rectilinear motion through the rotation and revolution of the pinion member, and a journal support member has a bearing for supporting a crank journal so as to rotate positioned between the pinion member and a crank arm, and which is supported by a case member so as to rotate coaxially with an output member.

Abstract: There is provided an electric power supply system comprising a secondary battery unit which stores electric power generated by a solar cell module, a charge switch circuit which disconnects and connects a charge path between the solar cell module and the secondary battery unit, and a charge and discharge control unit which controls the disconnection and the connection of the charge path by the charge switch circuit, wherein, in the charge switch circuit, the disconnection and the connection of the charge path is controlled by an output voltage of the solar cell module when the charge switch circuit cannot be controlled by the charge and discharge control unit.

Abstract: A connecting member coupled to four pistons that reciprocate within cylinder bores is coupled to a crankpin of a crankshaft, and a pinion member which integrally rotates with a crankshaft portion is capable of rolling along the inner periphery of an internal gear member and has an outer diameter equal to 1/2 of an inner diameter of the internal gear member. The crankpin executes a reciprocating rectilinear motion through the rotation and revolution of the pinion member, and a journal support member has a bearing for supporting a crank journal so as to rotate positioned between the pinion member and a crank arm, and which is supported by a case member so as to rotate coaxially with an output member.