Abstract: A fluid machine includes: a shaft portion; a shroud having an inside surface with a diameter decreasing from an upstream side toward a downstream side, a flow path being formed between the shroud and the shaft portion and having a flow path cross-sectional area decreasing toward the downstream side; a propeller rotatably provided about an axis between the shaft portion and the shroud and configured to pump a fluid from the upstream side toward the downstream side; and a motor provided to correspond to the propeller and including a rotor having a ring-like shape fixed to an outer circumference portion of the propeller and accommodated in the shroud and a stator having a ring-like shape surrounding the rotor and fixed in the shroud, in which a plurality of the propellers are provided to be spaced apart in the axis direction, the motors are provided in an identical number to the propellers to correspond to each of the propellers, and of a plurality of motors, the rotor of the motor positioned more on the downstr

Abstract: A fluid machine includes: a shaft portion extending in an axis direction; a shroud provided to surround the shaft portion, and forming a flow path between the shroud and the shaft portion, the flow path having one side in the axis direction serving as an upstream side and another side in the axis direction serving as a downstream side; a propeller provided rotatably around the axis between the shaft portion and the shroud; a motor provided in the shroud and configured to rotationally drive the propeller; and a bearing apparatus provided only to the shaft portion, out of the shroud and the shaft portion, and rotationally supporting the propeller.

Abstract: A fluid machine includes: a shaft portion extending in an axis direction; a shroud provided to surround the shaft portion, and forming a flow path between the shroud and the shaft portion, the flow path having one side in the axis direction serving as an upstream side and another side in the axis direction serving as a downstream side; a first propeller provided rotatably around the axis between the shaft portion and the shroud; a second propeller provided rotatably around the axis between the shaft portion and the shroud on the downstream side of the first propeller; an outer periphery driving motor provided in the shroud and configured to rotationally drive the first propeller; and an inner periphery driving motor provided in the shaft portion and configured to rotationally drive the second propeller in a direction opposite to the rotational direction of the first propeller.

Abstract: A fluid machine includes: a shaft portion extending in an axis direction; a shroud provided to surround the shaft portion and having a diameter decreasing from an upstream side on one side in the axis direction toward a downstream side on another side in the axis direction, a flow path being formed between the shroud and the shaft portion and having a flow path cross-sectional area decreasing toward the downstream side; a propeller rotatably provided about an axis between the shaft portion and the shroud and configured to pump a fluid from the upstream side toward the downstream side; and a motor provided to correspond to the propeller, the motor including a rotor having a ring-like shape and being fixed to an outer circumference portion of the propeller and accommodated in the shroud and a stator having a ring-like shape surrounding the rotor and being fixed in the shroud, in which the motor is a conical motor in which diameters of the rotor and the stator decrease from the upstream side toward the downstrea

Abstract: A vehicle headlight control device is provided with: a pedestrian detection unit which detects a pedestrian; and a headlight control unit which controls an irradiation state of a headlight. When the pedestrian detection unit detects a pedestrian within an irradiation range of the headlight, the headlight control unit executes dimming control for controlling the irradiation state of the headlight so that a periphery of the pedestrian is dimmed. The pedestrian is irradiated with a part of a high beam or a low beam, or marking light emitted from a dedicated light source. A dimming region is formed around the pedestrian by the dimming control, and contrast in brightness between the pedestrian and his/her surroundings can be raised.

Abstract: A vehicle headlight control device is provided with: a pedestrian detection unit which detects a pedestrian; and a headlight control unit which controls an irradiation state of a headlight. When the pedestrian detection unit detects a pedestrian within an irradiation range of the headlight, the headlight control unit executes dimming control for controlling the irradiation state of the headlight so that a periphery of the pedestrian is dimmed. The pedestrian is irradiated with a part of a high beam or a low beam, or marking light emitted from a dedicated light source. A dimming region is formed around the pedestrian by the dimming control, and contrast in brightness between the pedestrian and his/her surroundings can be raised.

Abstract: A power supply control device includes an SOC schedule generation unit configured to generate an SOC schedule indicating a change in an SOC of a power storage device in a first period when a power supply system including the power storage device is operated such that an SOC of the power storage device does not fall outside of a predetermined range, an operation schedule generation unit configured to generate an operation schedule of the power supply system in a second period which is a period within the first period on the basis of the SOC schedule and a control command unit configured to generate a control command of the power supply system on the basis of the operation schedule.

Abstract: A power management system includes: a first power source that includes a first storage cell; a second power source that includes a second storage cell; a power load that is driven with first power output by the first power source and second power output by the second power source; and an integrated control device that controls the first power and the second power such that a first cell temperature of the first storage cell is substantially the same as a second cell temperature of the second storage cell.

Abstract: A battery state monitoring device (3) is provided with: a substrate (100) that is provided with a terminal insertion hole (111B) into which an electrode terminal (75) of a battery (2) is inserted; a stator (141B) which is formed of a heat conductive material, is provided around the terminal insertion hole (111B), and is fitted to the electrode terminal (75) so as to be in contact with the electrode terminal (75) in a state where the electrode terminal (75) is inserted into the terminal insertion hole (111B); and a temperature measuring element (151) which is affixed to the substrate (100) and measures the temperature of the electrode terminal (75) through the stator (141B).

Abstract: The battery state-of-charge calculation device (100) is provided with a SOCV calculation unit (5) which outputs a first state of charge calculated based on voltage data, a SOCI calculation unit (6) which outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit (12) which calculates an impedance voltage value based on an effective state of charge and the current data, a static determination unit (7) which determines that the impedance voltage value remains static for a predetermined time or longer in a range identified by a predetermined threshold value and outputs the determination result; and a SOC decision unit (20) which, based on the determination result, outputs the first state of charge as the effective state of charge where the impedance voltage value is static and outputs the second state of charge as the effective state of charge where the impedance voltage value is not static.

Abstract: A voltage equalization device of a power storage device provided with battery packs in which a plurality of secondary cells are connected, power converters provided in association with the battery packs, and controllers that control the power converters, and in which the battery packs are connected in parallel via the individual power converters includes a decision portion and a voltage-adjusting portion. The decision portion obtains battery-pack information regarding the states of charge/discharge of the individual battery packs and decides, for each battery pack, whether or not to perform voltage adjustment on the basis of the battery-pack information. When the decision portion decides that the voltage adjustment is to be performed, the voltage-adjusting portion generates offset instructions for adjusting the states of charge/discharge and outputs the offset instructions to the controllers of the power converters associated with the battery packs.

Abstract: A battery pack includes: a battery unit in which a plurality of battery modules with a plurality of secondary batteries connected in series to each other is connected in parallel to each other so that output current; and a battery management unit. The battery management unit calculates a first allowable current value of each of the plurality of battery modules and calculates second allowable current values of the other battery modules based on the first allowable current value of one battery module from the plurality of battery modules. The battery management unit calculates a value corresponding to the sum of the first allowable current value used as the reference and the respective second current values as an allowable current value when each of the second allowable current values is equal to or smaller than the first allowable current value of the corresponding battery module.

Abstract: A secondary cell control system includes a plurality of cells; a charging circuit section and a discharging circuit section. The charging circuit section charges cells selected from among said plurality of cells, and the discharging circuit section discharges cells selected from among said plurality of cells.

Abstract: It is an object to effectively output electrical energy of a storage battery to an electrical power system serving as a whole distributed power supply system by effectively utilizing the electrical energy within a charging ratio range that does not cause overcharging or overdischarging of the storage battery. In a hybrid distributed power supply system, the target supply electrical power is set based on the electrical power generation output of the electrical power generator and the charging state of the storage battery, and the target supply electrical power is restricted within a predetermined permissible supply electrical power range when the target supply electrical power deviates from the predetermined permissible supply electrical power range.

Abstract: A battery apparatus includes a row battery group including a plurality of series-connected row batteries including one or more battery cells; a plurality of battery management sections, corresponding to the individual row batteries, for managing the battery statuses of the corresponding row batteries; a central management section for granting unique identification information to the individual battery management sections and acquiring information about the battery statuses of the row batteries from the respective battery management sections for management; second communication lines with which the plurality of battery management sections are daisy-chained; a first communication line with which, of the plurality of battery management sections, the battery management section located at one end is connected to the central management section; and a plurality of connection switching sections, provided in the individual second communication lines between the battery management sections, for switching the connection

Abstract: It is an object to provide a battery system whose life can be extended. A cell pack having at least one lithium secondary battery that uses a manganese-based cathode material and a control unit that controls charging and discharging of the cell pack are provided, and the control unit controls charging and discharging within a low-degradation voltage range that is set on the basis of a target cell degradation rate.

Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.

Abstract: An object is to reliably conduct cell balancing operation while suppressing deterioration of batteries and maintaining operating efficiency. When the cell balance control by the cell balancing circuit 3 is started, the system control device 30 sets an on/off device corresponding to the arm where the cell balance control is conducted to the open state; and when the cell balance control is completed, and the difference between the terminal voltage of a battery pack of the arm where the cell balance control has been conducted and the terminal voltages of the battery packs of the other arms falls within a preset allowable range, sets the on/off device, which has been in the open state, to the closed state.

Abstract: A battery system includes secondary batteries (Ca to Ch), temperature sensors (Ta to Th), current sensors (Ia and Ib), voltage sensors (Va to Vh), and a control unit 102. The control unit 102 calculates the charging-discharging power efficiencies of the secondary batteries (Ca to Ch) using the current information and the voltage information, calculates the state of charge of the secondary batteries (Ca to Ch) using the temperature information, the current information, and the voltage information, determines whether the amounts of charge discharged from the secondary batteries (Ca to Ch) are substantially equal to the amounts of charge charged in the secondary batteries using the current information, and compares a threshold value set to correspond to the state of charge with the charging-discharging power efficiencies to determine the degradation of the secondary batteries (Ca to Ch) when it is determined that both amounts of charge are equal to each other.

Abstract: According to the invention, an battery system with an arm formed by electrically connected a plurality of battery cells to each other is provided. The battery system includes: a temperature detection unit that is provided to each of battery cells; a cooling unit that cools the arm; and a control unit that identifies a maximum value from the temperatures of the battery cells measured by the temperature detection unit and controls the cooling unit so that the maximum value falls within a predetermined allowable temperature range.