Abstract: Provided is a battery residual value determination system capable of easily and accurately determining the residual value of a battery. The battery residual value determination system includes: a battery information reception unit that receives information on the voltage, the current, the temperature, and the period of time elapsed from the time of manufacture of a battery; a first residual value determination unit that determines a first residual value indicating the SOH of the battery; an attenuation function determination unit that determines an attenuation function which indicates a time-dependent change of the SOH specific to the battery and is used for correcting the first residual value of the battery; and a second residual value output unit that determines and outputs a second residual value obtained by correcting the first residual value by using the attenuation function according to the period of time elapsed from the time of manufacture of the battery.

Abstract: A semiconductor device includes a semiconductor element, a substrate, a bonding member and a sealing body sealing the semiconductor element, the substrate and the bonding member. The substrate has front-face and back-face metal bodies on opposite faces of an insulating base member. The front-face metal body is electrically connected to a main electrode of the semiconductor element. The bonding member connects the front-face metal body and the main electrode. The front-face metal body includes a base material and a plating film disposed on faces of the base material. The plating film is disposed at an upper face and a side face of the front-face metal body. The front-face metal body includes a roughened portion at the upper face and the side face, and a non-roughened portion at an area of the upper face excluding the roughened portion and including an arrangement region of the bonding member.

Abstract: A semiconductor device includes a semiconductor element having main electrode on opposite faces in a plate thickness direction, a substrate, and a sealing body. The substrate has an insulating base member, a front-face metal body, and a back-face metal body having an exposed face exposed from the sealing body. A laminate of the insulating base member and the back-face metal body has a side face connecting between a front face of the insulating base member and the exposed face of the back-face metal body. The side face includes a first inclined portion in a predetermined range from the front face and a second inclined portion in a predetermined range from the exposed face. In a plan view of the substrate viewed along the plate thickness direction, a length of the second inclination portion is shorter than a length of the first inclination portion.

Abstract: A vehicle seat has a tether anchor disposed on a rear surface of a seatback to which a hook on an upper end of a child's seat is engaged for fixing of an upper portion of the child's seat. The vehicle seat has a seatback frame to which the tether anchor is fixed. The tether anchor is covered with a cover formed with a notch along a track of the hook in a locking operation so that a substantial part of the tether anchor is covered with the cover except a portion of the tether anchor on which the hook is locked. This will improve external appearance of the vehicle seat and avoid deterioration of loading ability of the vehicle seat and comfortability of an occupant in the vehicle.