Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series with each other. Each of the solar cell module groups includes one or a plurality of solar cell modules connected in series. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to a first electric path in response to a first control signal from the inverter. The second shut-off device is connected to the first shut-off device in a two-way communicable manner, is driven by an electrical power supplied from the first shut-off device, and cuts off a connection between the plurality of solar cell module groups connected to a second electric path in response to a second control signal from the first shut-off device.

Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series with each other. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to a first electric path connecting between the plurality of solar cell module groups in response to a first control signal from the inverter. The second shut-off device is connected to the first shut-off device in a two-way communicable manner by a communication system different from power line communication and cuts off a connection between the solar cell module groups connected to a second electric path connecting between the plurality of solar cell module groups in response to a second control signal output from the first shut-off device by a communication system different from power line communication.

Abstract: A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series. The first shut-off device is connected to a first electric path connecting between the plurality of solar cell module groups. The second shut-off device is connected to a second electric path connecting between the plurality of solar cell module groups. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to the first electric path in response to a first control signal from the inverter. The second shut-off device is driven by an electrical power supplied from the first shut-off device and cuts off a connection between the solar cell module groups connected to the second electric path in response to a second control signal from the first shut-off device.

Abstract: A position detection device includes a first position detector, a second position detector, and a signal generator. The first position detector includes a first magnetic field generation unit, a second magnetic field generation unit, and a first magnetic sensor. The second position detector includes a third magnetic field generation unit, a fourth magnetic field generation unit, and a second magnetic sensor. The positions of the second and fourth magnetic field generation units vary in response to variations in a detection-target position. The signal generator generates a position detection signal, which is the sum of a first detection signal generated by the first magnetic sensor and a second detection signal generated by the second magnetic sensor. Each of the first and second position detectors includes a bias magnetic field generation unit.

Abstract: A method for producing a power storage device includes forming a lid, forming a lid assembly, closing, and welding. In forming a lid, there is included forming, by forging, a protruding portion between a peripheral portion and an insertion-hole surrounding portion of the lid to block scattered light of a laser beam from being irradiated to a resin member, with a distance D from an end surface of the peripheral portion to a side surface of the protruding portion falling within 0.5t (D?0.5t) relative to a thickness t of the lid.

Abstract: A method for producing a power storage device includes placing a lid assembly that includes a lid and a terminal member integrated therewith via a resin member to close an opening portion of a case body with the lid, and laser-welding the opening portion of the case body and the peripheral portion of the lid over an entire circumference. In placing the lid assembly, a peripheral high-level region, in which a peripheral outer surface of the peripheral portion of the lid is located on the outer side relative to an opening end surface of the opening portion of the case body is provided in proximate long-side opening portions, close of the opening portion and proximate long-side peripheral portions of the peripheral portion.

Abstract: A method for producing a power storage device includes closing an opening portion of a case body with a lid of a lid assembly, and laser-welding the opening portion of the case body and a peripheral portion of the lid over their entire circumference. A resin member has an outer surface including a scattered light-reached surface to which scattered light of a laser beam directly reaches, at least a part of the scattered light-reached surface including a smoothed region having a surface roughness of 0.6 ?m or less.

Abstract: A placement apparatus for placing a workpiece is provided. The placement apparatus includes a stage on which a workpiece can be placed in a processing vessel; an edge ring including a locking part which is disposed on the stage so as to surround a periphery of the workpiece; a conductive connecting member connected with the edge ring at the locking part; and a first contacting member configured to cause the edge ring to contact the stage, while the edge ring is connected with the connecting member.

Abstract: An information processing apparatus configured to determine a tour schedule around a facility, the information processing apparatus includes a controller configured to determine a tour time at a tour spot in the tour schedule, based on biological information on a user who is observing a process performed by equipment at the tour spot in the facility.

Abstract: A battery terminal has a two-piece configuration of different types of conductive materials. A first piece placed outside and a second piece placed inside with including a current collecting portion are fixed in two portions of a first fixing portion and a second fixing portion. The first fixing portion is positioned between the current collecting portion and the second fixing portion in a longitudinal direction in a shape of the terminal. Leaning of the current collecting portion with respect to a center in a short-side direction and leaning of the first fixing portion with respect to a center are opposite to each other.

Abstract: A solar power generation system includes a string, an inverter, and a plurality of shut-off devices. The string includes a plurality of solar cell module groups. The plurality of shut-off devices are configured to cut off a connection between the plurality of solar cell module groups. The plurality of solar cell module groups include a first group, a second group connected to the first group, and a third group connected to the second group. The plurality of shut-off devices includes a first open-close unit connected to the second group, a semiconductor switching device connected in series to the first open-close unit, and a power supply unit connected to the second group and configured to generate power to drive the first open-close unit. The semiconductor switching device enters an OFF state when an amount of power generated by second group is smaller than a predetermined threshold.

Abstract: A solar power generation system includes a string, an inverter, and first and second shut-off devices. The string includes a plurality of solar cell module groups. The first shut-off device cuts off the connections between the plurality of solar cell module groups of a first electric path in response to a first control signal. The second shut-off device cuts off the connections between the plurality of solar cell module groups in a second electric path in response to a second control signal output by a different communication system. The first shut-off device includes a first open-close unit, a first semiconductor switching device connected in series to the first open-close unit and a power supply unit configured to generate power to drive the first open-close unit. The first semiconductor switching device enters an OFF state if the amount of generated power is smaller than a predetermined threshold value.

Abstract: The solar power generation system includes a string, an inverter, and primary and secondary shut-off devices. The primary shut-off device cuts off the string and the inverter in response to a first control signal. The secondary shut-off device cuts off a solar cell module group and another solar cell module or the inverter in response to a second control signal from the primary shut-off device. The secondary shut-off device includes a first secondary-device open-close unit in a first electric pathway, a semiconductor switching device disposed between the first secondary-device open-close unit and a solar cell module group, and a power supply unit having an anode-side terminal connected between a solar cell module group and the semiconductor switching device, which generates power to drive the third open-close unit. The semiconductor switching device enters an OFF state when power generated by the solar cell module groups falls below a predetermined threshold.

Abstract: A solar power generation system includes a string, an inverter, a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups. The first shut-off device is connected to a first electric path. The second shut-off device is connected to a second electric path. The first shut-off device cuts off the connection between a plurality of solar cell module groups connected to the first electric path in response to a first control signal. The second shut-off device is driven by the power supplied from the first shut-off device, and cuts off the connection between a plurality of the solar cell module groups connected to the second electric path in response to a second control signal. The first shut-off device includes a first semiconductor switching device and a first open-close unit connected in series to the first semiconductor switching device.

Abstract: A control device is connected to at least one solar cell module and an inverter, and controls the at least one solar cell module by MPPT control. The control device includes an opening/closing unit and a control unit. The opening/closing unit includes a semiconductor relay and a mechanical relay connected in parallel with the semiconductor relay. The control unit controls opening and closing of the opening/closing unit in response to a control signal from the inverter. In a case of connecting the at least one solar cell module and the inverter, the control unit turns ON the semiconductor relay to turn ON the mechanical relay, and then disconnects the semiconductor relay. In a case of cutting off the connection between the at least one solar cell module and the inverter, the control unit connects the semiconductor relay to disconnect the mechanical relay, and then disconnects the semiconductor relay.

Abstract: A refrigerator system capable of reducing decrease in the accuracy of detecting change in a storage state and reducing a communication load for transmitting images of the inside of a storeroom, which are taken at a plurality of viewpoints to the outside of a refrigerator is provided. To achieve this, the refrigerator system includes: a camera configured to take the images of the inside of the storeroom; a camera moving device configured to move the camera at least in the vertical direction; a communication device configured to transmit the images taken by the camera to the outside of a main body; and a change detecting device configured to detect change in a food-item storage state of each shelf based on the images taken by the camera. The camera takes images of each shelf at a first viewpoint and a second viewpoint. The change detecting device detects change in the food-item storage state of the shelf based on the image taken at the first viewpoint.

Abstract: A solar power generation system includes a string, an inverter, and a plurality of shut-off devices. The string includes a plurality of solar cell module groups. The plurality of shut-off devices is configured to cut off a connection between the plurality of solar cell module groups in response to a control signal from the inverter. The plurality of solar cell module groups includes a first group, a second group connected to the first group, and a third group connected to the second group. The plurality of shut-off devices includes a first shut-off device. The first shut-off device includes a first switching unit connected to an anode-side terminal of the second group. The first switching unit includes a first open-close unit and a first semiconductor switching device connected in parallel with the first open-close unit. The first semiconductor switching device is turned ON before the first open-close unit is operated.

Abstract: A solar power generation system includes a string, an inverter, and a plurality of shut-off devices. The string includes a plurality of solar cell module groups. The plurality of shut-off devices is configured to cut off the connection between the plurality of solar cell module groups in response to a control signal from the inverter. The plurality of solar cell module groups includes a first group, a second group connected to the first group, and a third group connected to the second group. The plurality of shut-off devices includes a first shut-off device. The first shut-off device includes a first open-close unit connected to an anode-side terminal of the second group and a second open-close unit connected to a cathode-side terminal of the second group.

Abstract: A solar power generation system includes a string, an inverter, a first shutoff device, and a second shutoff device. The string includes a plurality of solar cell modules connected in series. The first shutoff device includes a first switching unit and a second switching unit, and turns OFF the switching units, in response to a first control signal from the inverter. The first switching unit is connected to an anode side terminal of the string and an anode side terminal of the inverter. The second switching unit is connected to a cathode side terminal of the string and a cathode side terminal of the inverter. The second shutoff device cuts off a solar cell module group including one or more among the plurality of solar cell modules and either another solar cell module or the inverter in response to a second control signal from the first shutoff device.

Abstract: A solar power generation system includes a string, an inverter, a first shutoff device, and a second shutoff device. The string includes a plurality of solar cell module groups. The first shutoff device cuts off connections between the plurality of solar cell module groups connected to a first electric path, in response to a first control signal. The second shutoff device cuts off connections between the plurality of solar cell module groups connected to a second electric path, in response to a second control signal output from the first shutoff device by a communication system different from power line communication. A first switching unit of the first shutoff device includes a first open and close unit and a first semiconductor switching device connected in parallel with the first open and close unit. The first semiconductor switching device is turned ON before the first open and close unit is operated.