Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.

Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.

Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a fixing member that fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod.

Abstract: A laser peening apparatus for manufacturing a rotor using an electrical steel sheet with low iron loss for enabling high speed rotation of a motor. The laser peening apparatus includes a laser irradiating device for irradiating with a laser through a liquid the rotor made of an electrical steel sheet with low iron loss, and a drive device for moving the rotor relative to an irradiation spot of the laser so that the laser irradiates along a bridge side on an inner circumference of a magnet insertion window of the rotor.

Abstract: An electrical-steel-sheet formed body is provided with an opening portion into which a permanent magnet is inserted, and an outer-peripheral hardened portion formed on the electrical-steel-sheet formed body at an outer periphery side thereof for the opening portion and having a higher hardness than a remaining area of the electrical-steel-sheet formed body. The electrical-steel-sheet formed body can be used as the rotor of the built-in permanent magnet type rotary electric machine, and the built-in permanent magnet type rotary electric machine can be obtained.

Abstract: A stator for a motor is a segmented type including a plurality of stator segments. Each stator segment includes a core segment forming a stator core, a stator winding including a first winding wound in one direction on the core segment, and a second winding wound in the opposite direction on the core segment, and an insulating member interposed between the core segment and the stator winding. A connecting member is formed integrally in the insulating member, and arranged to electrically connect inner ends of the first and second windings to form a single continuous winding.

Abstract: An electrical-steel-sheet formed body is provided with an opening portion into which a permanent magnet is inserted, and an outer-peripheral hardened portion formed on the electrical-steel-sheet formed body at an outer periphery side thereof for the opening portion and having a higher hardness than a remaining area of the electrical-steel-sheet formed body. The electrical-steel-sheet formed body can be used as the rotor of the built-in permanent magnet type rotary electric machine, and the built-in permanent magnet type rotary electric machine can be obtained.

Abstract: A stator for a motor is a segmented type including a plurality of stator segments. Each stator segment includes a core segment forming a stator core, a stator winding including a first winding wound in one direction on the core segment, and a second winding wound in the opposite direction on the core segment, and an insulating member interposed between the core segment and the stator winding. A connecting member is formed integrally in the insulating member, and arranged to electrically connect inner ends of the first and second windings to form a single continuous winding.

Abstract: A battery management for a hybrid drive system for a vehicle recovers input and output performance of a battery if the battery temperature is low. If the battery temperature is less than or equal to a predetermined value (or if the battery internal resistance is greater than or equal to a predetermined value), the battery needs to recover its input and output performance. Under this condition, the state of charge (SOC) of the battery is determined and compared with a predetermined value. The comparison result is used to determine whether the battery is capable of discharging or the battery needs charging. If SOC is greater than or equal to the predetermined value, a controller conducts forced discharge from the battery to operate an electric motor of the hybrid drive system in power mode. This forced discharge causes an increase ion the battery temperature, thus causing the battery to recover its input and output performance.