614results about How to "Suppress fever" patented technology

A device housing a battery 50 has charging terminals 72 for connection of a charging adapter 80 and a contactless charging section 60. A charging apparatus 10 performs contactless charging of the device housing a battery 50 placed on the charging apparatus 10. The device housing a battery 50 is provided with a charging apparatus detection section 61 that detects placement on the charging apparatus 10, an adapter detection section 62 that detects charging adapter 80 connection or charging, and a charging selection section 63 that selects internal battery 52 charging by either the charging apparatus 10 or the charging adapter 80. When the device housing a battery 50 is placed on the charging apparatus 10 and the charging adapter 80 is connected, the charging selection section 63 controls either the charging apparatus 10 or the charging adapter 80 to charge the internal battery 52.

The present invention provides a highly reliable electric power converter reduced in parasitic inductance.An electric power converter that includes a capacitor module which has a DC terminal, an inverter which coverts a direct current into an alternating current, and heat release fins which cool the inverter, is constructed so that: the inverter has a power module including a plurality of power semiconductor elements; the power module further has a metallic base, a dielectric substrate provided on one face of the metallic base, a power semiconductor element fixed to the dielectric substrate, and a DC terminal; the metallic base has the heat release fins on the other face; the DC terminal in the power module and the DC terminal in the capacitor module are each formed by stacking flat plate conductors via an insulator; the two positive and negative DC terminals have respective front ends bent in opposite directions; a plane including the bent sections is used as a surface for connecting the power module and the capacitor module; and the insulators overlap each other at the connection surface.

An electronic apparatus (1) includes a power receiver (2) and an electronic apparatus main body (3). The power receiver (2) includes a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) includes an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and one of the secondary battery (13), the rectifier (12), the electronic device (14) and the circuit board (15).

This invention provides a power unit for an automobile including a motor 6 for starting an engine by transmitting a power thereto and generating a power by receiving a power from the engine during rotation thereof, a power converting circuit 5 for transmitting a power to the motor 6, a battery 1, an energy storing source 20 for storing energy, and a DC / DC converter including at least two switching elements 10, 11, charging the energy storing source 20, and recovering energy in the energy storing source 20 to the battery 1. Since the switch provided in the DC / DC converter is normally turned on when the motor 6 generates power by receiving a power from the engine and charges the battery 1 through the power converting circuit 5 and the DC / DC converter, generation of heat from the DC / DC converter circuit part can be suppressed greatly.

There is provided a precision roll turning lathe includes: a bed 10; a headstock 12, mounted on the bed 10, for rotating a roll-shaped workpiece while holding one end of the workpiece by means of a chuck, said headstock having an indexing axis (C axis) for performing circumferential indexing of the workpiece; a tail stock 14, mounted on the bed 10 and disposed opposite the headstock 12, for rotatably supporting the other end of the workpiece; a carriage 16 including a saddle 26 mounted on the bed 10 movably in the longitudinal direction (Z-axis direction) of the workpiece, and a table 28 mounted on the saddle 26 movably in a direction (X-axis direction) perpendicular to the longitudinal direction of the workpiece; a tool swivel 30 mounted on the table 28 and having an indexing axis (B axis); a tool post 33 mounted on the tool swivel 30 and having a plurality of cutting tools 36 attached thereto; and a fly cutter spindle device 34 mounted to the tool post 33. The precision roll turning lathe can not only machine with high precision circumferential transverse grooves in the peripheral surface of a roll but can also machine with high precision longitudinal grooves in the peripheral surface.

Disclosed is an electronic apparatus (1) comprising a power receiving device (2) and an electronic apparatus main body (3). The power receiving device (2) comprises a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) comprises an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and the secondary battery (13), the rectifier (12), the electronic device (14) or the circuit board (15). The magnetic foil (16) has a value expressed as the product of the saturation flux density MS and the thickness t, namely Ms·t, of not less than 15.