Abstract: A motor-driven compressor, a housing structure for a motor-driven compressor, and a method of installing a soundproof cover on a motor-driven compressor are provided. A soundproof cover includes layers that include a first layer and a second layer. The first layer is placed over a housing, and the second layer is placed over the first layer. Each of the layers includes a first segment and a second segment. A second selection layer is located inward of a first selection layer. A boundary in the second selection layer is located above the boundary of the first selection layer.

Abstract: An electric compressor includes a compression part configured to compress fluid, an electric motor configured to drive the compression part, a housing accommodating the compression part and the electric motor, a soundproof cover covering the housing, and a nameplate attached to the housing and including a predetermined information. The housing includes a protrusion that is a part of the housing and protrudes out of the soundproof cover through a hole formed in the soundproof cover. The nameplate is provided on the protrusion.

Abstract: An industrial vehicle includes a travel direction detector configured to detect a travel direction of the industrial vehicle, a vehicle speed sensor configured to detect a vehicle speed of the industrial vehicle, a travel direction determiner, an object detector, and a controller. The controller is set in a particular state when the vehicle speed of the industrial vehicle is equal to or higher than a first vehicle speed threshold value. In the particular state, even when a travel direction command is changed by the travel direction determiner, the controller recognizes that a traveling state of the industrial vehicle before the travel direction command is changed continues and the object detector operates based on the traveling state of the industrial vehicle before the travel direction command is changed.

Abstract: A power storage module includes an electrode laminate including a laminate of a plurality of bipolar electrodes and a negative terminal electrode disposed on one end side of the laminate in a laminating direction, a sealing body provided to surround a side surface of the electrode laminate and sealing an internal space formed between electrodes adjacent to each other, and an electrolytic solution containing an alkaline solution that is housed in the internal space, both surfaces of a metal plate of the negative terminal electrode are bonded to the sealing body, and a first surplus space surrounded by the sealing body and the metal plate of the negative terminal electrode is present.

Abstract: A centrifugal compressor includes a compressor impeller, a motor, an inverter, a housing including a motor chamber and an inverter chamber, a conductive member, an insertion hole, and a resin member sealing the insertion hole. A pressure in the motor chamber is higher than that in the inverter chamber. The resin member includes a first resin portion fixed to the housing and a second resin portion which is covered with the first resin portion and which covers the conductive member, the second resin portion having a Young's modulus smaller than that of the first resin portion. The first resin portion and the second resin portion, and the second resin portion and the conductive member are coupled by insert-molding.

Abstract: A centrifugal compressor includes a high-speed shaft, an impeller, a housing having a partition wall and a discharge passage, and a sealing member. The centrifugal compressor includes a bypass that is formed in the partition wall and has an inlet connected to the discharge passage and an outlet connected to a space between a back surface of the impeller and the partition wall. The inlet is located outward of the outlet and the outlet is located outward of the sealing member in a radial direction of the high-speed shaft. The bypass includes an outlet passage that extends to the outlet outwardly in the radial direction of the high-speed shaft. Air introduced from the inlet flows out of the outlet through the outlet passage so as to form a flow of air flowing away from the sealing member in the space.

Abstract: A vehicle inverter device for driving an electric motor using a vehicle electric power source. The vehicle inverter device includes an input terminal, a filter circuit including a capacitor, an inverter circuit, a positive bus bar, a negative bus bar, a control circuit, an upper arm ground line, and a low voltage electric power source circuit. The control circuit causes only a lower arm switching element to be in an on-state and electrically connects the control circuit and the negative bus bar through the upper arm ground line when a direct current electric power is supplied from the low-voltage electric power source circuit under a condition where a direct current electric power is not inputted to the input terminal.

Abstract: A fluid machine includes a rotary shaft, an operation body configured to discharge fluid by rotation of the rotary shaft, a housing accommodating the rotary shaft and the operation body, and a foil bearing disposed in the housing rotatably supporting the rotary shaft. The foil bearing includes a cylindrical bearing housing, a top foil between the bearing housing and the rotary shaft, and a bump foil between the bearing housing and the top foil and elastically supporting the top foil. The bearing housing has a protrusion protruding inwardly in a radial direction from the bearing housing. The protrusion includes an abutment surface configured to restrict deformation of the bump foil to an elastic range not to reach a plastic range by abutting against the top foil or the bump foil when the top foil is displaced outwardly in the radial direction of the bearing housing.

Abstract: A power conversion device includes two lower arm switching elements connected in parallel to each other and a lower arm driver circuit that drives the two lower arm switching elements. The two lower arm switching elements respectively include gate terminals and detection terminals used to detect counter-electromotive forces. The power conversion device includes a common connection line that connects the two detection terminals to each other and connects the two detection terminals to an addition circuit of the lower arm driver circuit. A combined electromotive force is transmitted via the common connection line.

Abstract: An obstacle detector is installed on a forklift. The obstacle detector includes a stereo camera for detecting an obstacle, and a position detector for detecting the position of the obstacle from a detection result of the stereo camera. In a detectable area, non-detection areas are preset. The non-detection areas are set at positions where a counterweight of the forklift is located. The position detector determines that an obstacle is not present in the non-detection areas.

Abstract: A power storage device includes power storage cells that are stacked in a stacking direction, and a temperature sensor configured to measure a temperature of at least one power storage cell to be measured among the power storage cells. Each of the power storage cells includes a positive electrode that includes a first current collector, and a positive electrode active material layer, a negative electrode that includes a second current collector, and a negative electrode active material layer, a separator that is arranged between the positive electrode and the negative electrode, and a sealing portion—that surrounds and seals the positive electrode active material layer and the negative electrode active material layer.

Abstract: A turbo fluid machine includes a housing having a motor chamber, a turbine chamber, a first shaft hole, and a second shaft hole; a drive shaft; and a sealing member that seals a gap between the motor chamber and the turbine chamber. The sealing member includes a first sealing member and a second sealing member that is located away from the first sealing member and between the first sealing member and the turbine chamber in an axial direction of the drive shaft. The drive shaft, the second shaft hole, the first sealing member, and the second sealing member cooperate to form a reservoir in which water contained in exhaust from a fuel cell is stored. The housing has a water discharge passage which is communicated with the reservoir and through which the water is discharged from the reservoir to an outside of the housing.

Abstract: A motor-driven compressor includes an inverter device. The inverter device includes a noise reducing unit. The noise reducing unit includes common-mode choke coils and a smoothing capacitor. The common-mode choke coils include a first coil and a second coil. The first coil includes a first core, a first winding, and a second winding. The first core includes a first straight portion and a second straight portion. The second coil includes a second core, a third winding, and a fourth winding. The second core includes a third straight portion and a fourth straight portion. The first coil and the second coil are arranged side by side such that a current flowing through the first winding and the third winding generates an annular magnetic flux that passes through both of the first straight portion and the third straight portion.

Abstract: A brake system includes an electromagnetic brake device configured to apply a brake to a rotary shaft when current is not applied to the brake system and release the brake on the rotary shaft when current is applied to the brake system; and a brake release device configured to forcibly release the brake on the rotary shaft when current is not applied to the brake system. The brake release device includes a guide member having a tube shape; a release plate disposed within the guide member and engaged with the armature; and a transfer unit that is configured to move the release plate in a direction in which the rotary shaft extends.

Abstract: There is provided a control device for an electric motor. The control device includes an inverter circuit and a control circuit. In a control cycle of the electric motor, the control cycle includes first to third sections. The control circuit outputs a first modulated wave in accordance with an output of the electric motor and outputs a minimum value or maximum value of a carrier wave as second and third modulated waves in the first section with a peak of first alternate-current voltage, and outputs the second modulated wave in accordance with an output of the electric motor and outputs the minimum value or maximum value of the carrier wave as the first and third modulated waves in the second section with a peak of second alternate-current voltage. The same output is applied in the third section with a peak of third alternate-current voltage.

Abstract: A power storage device includes: a plurality of bipolar electrodes being stacked, each of the plurality of bipolar electrodes including a collector having a first surface and a second surface opposite to the first surface, a positive electrode layer provided on the first surface, and a negative electrode layer provided on the second surface; a first resin member provided on at least one surface of the first surface and the second surface in at least a portion of an outer peripheral portion of the collector; and a second resin member provided on the first resin member and supporting the outer peripheral portion of the collector via the first resin member. The respective first resin members for the bipolar electrodes adjacent to each other in a stacking direction of the plurality of bipolar electrodes are connected to each other by a welded portion.

Abstract: A scroll compressor includes a balancer that rotates integrally with a rotary shaft. A bushing includes a cylindrical portion and an auxiliary weight portion. The auxiliary weight portion is arranged on the outer side of the cylindrical portion. The fitting hole is provided at a position where a moment about the eccentric shaft generated by a centrifugal force acting on the movable scroll due to rotation of the rotary shaft and a moment about the eccentric shaft generated by a centrifugal force acting on the auxiliary weight portion due to rotation of the rotary shaft are in the opposite directions. As viewed in the axial direction of the rotary shaft, the center of gravity of the bushing is located on the same side of a straight line including the center of the cylindrical portion and the center of the rotary shaft as the center of the eccentric shaft.

Abstract: A turbo fluid machine includes: a housing; an electric motor; an impeller that compresses fluid; and a drive shaft connecting the impeller and the electric motor in the housing. The impeller chamber includes a first impeller chamber and a second impeller chamber distanced from each other in an axial direction of the drive shaft. The impeller includes: a first impeller that compresses the fluid to produce first compressed fluid; and a second impeller that compresses the first compressed fluid to produce second compressed fluid. The turbo fluid machine further includes: a compressed fluid passage through which the first compressed fluid is supplied to the second impeller chamber; and a plurality of flow straightening passages that extends inside the compressed fluid passage in a direction in which the compressed fluid passage extends, and through which the first compressed fluid is straightened and supplied to the second impeller chamber.

Abstract: A scroll electric compressor includes a housing, a rotary shaft, an electric motor, a fixed scroll, an orbiting scroll, a compression chamber, a discharge chamber, and an oil storage chamber. The housing has a discharge housing including an end wall, a first peripheral wall, a stepped portion, and a second peripheral wall. The fixed scroll has a flange in contact with the second peripheral wall. The stepped portion, the second peripheral wall, the flange, the outer peripheral wall cooperate to define an annular space around the fixed scroll. The annular space is in communication with the discharge chamber or the oil storage chamber.

Abstract: A cylinder boot for an axle of an industrial vehicle includes a cylinder boot body, a rod-side fixing portion, a cylinder-side fixing portion, and a detection portion. The cylinder boot covers a cylinder rod of a steering hydraulic cylinder. The cylinder boot body has a contractable portion that is contractable in response to a stroke of the cylinder rod. The rod-side fixing portion is disposed at one end portion of the cylinder boot body and fixed to a distal end portion of the cylinder rod. The cylinder-side fixing portion is disposed at the other end portion of the cylinder boot body and fixed to a cylinder body of the steering hydraulic cylinder. The detection portion is displaced in a direction in which the cylinder rod extends or contracts, and is detected by a detection sensor disposed on the beam axle.