Abstract: A cutting fluid circulation device includes a tank reservoir, a drum filter, and a pump. The tank reservoir stores cutting fluid discharged from a machine tool. The drum filter is disposed in the tank reservoir. The drum filter performs as a primary filter that filters cutting fluid. The pump pumps up cutting fluid in the tank reservoir. An annular flow channel in which the cutting fluid filtered by the drum filter circulates is formed in the tank reservoir. A part of the cutting fluid pumped up by the pump is fed to the drum filter, used for cleaning the drum filter, and then returned to the annular flow channel, and a part of the remaining cutting fluid is fed to a secondary filter disposed outside the tank reservoir, filtered by the secondary filter, and then returned to the annular flow channel.

Abstract: An output control device for a lithium-ion battery includes: a voltage measuring unit configured to measure an output voltage of the lithium-ion battery; a current measuring unit configured to measure an output current of the lithium-ion battery; a storage unit configured to store measurement results from the voltage measuring unit and the current measuring unit; a calculation unit configured to calculate a voltage and a current which are to be output from the lithium-ion battery on the basis of the measurement results from the voltage measuring unit and the current measuring unit; and a control unit configured to perform feedback control of the output current and the output voltage of the lithium-ion battery on the basis of a calculation result from the calculation unit.

Abstract: A pulse extraction device that can finely divide a waveform representing the charge amount (SOC) is provided. A pulse extraction device includes a pulse extraction part configured to extract a pulse based on a change point at which an increase or decrease changes in time series data of a charge amount of a secondary battery.

Abstract: A battery characteristic estimation device includes a first calculation part configured to calculate a first electrical characteristic value of a secondary battery on the basis of frequency-dependent data that is data of an output voltage of the secondary battery changed by a frequency of alternating current applied to the secondary battery, a second calculation part configured to calculate a second electrical characteristic value of the secondary battery on the basis of transient response data that is data of the output voltage of the secondary battery attenuated by a change in direct current applied to the secondary battery, and an estimation part configured to estimate an electrical characteristic value of the secondary battery on the basis of the first electrical characteristic value and the second electrical characteristic value.

Abstract: The present invention aims to provide, for example, an oral composition containing reduced CoQ10 that exhibits reduced discoloration caused over time, that has high safety, and that is applicable to foods and drinks, a method for producing the same, and a method for reducing discoloration of a composition containing reduced CoQ10. The present invention relates to, for example, an oral composition containing reduced coenzyme Q10 and at least one sesamin compound, and having a mixing ratio by weight of the sesamin compound to the reduced coenzyme Q10 (sesamin compound/reduced coenzyme Q10) of 0.01 to 10.

Abstract: In a fuel cell system which includes a high-electricity multiple-phase converter, noise generated due to an increase in reactor vibrations and due to a sound pressure increase caused by a plurality of reactors is effectively inhibited, and silence is improved. A fuel cell system includes a multiple-phase converter provided between a fuel cell and a load device. The fuel cell system includes: selecting means (e.g., a controller) for selecting a driving phase of the multiple-phase converter in accordance with the load of the load device; and driving means (e.g., a controller) for driving a plurality of driving phases, when selected by the selecting means, at carrier frequencies so that these driving phases are nearly opposite to each other.

Abstract: In a fuel cell system which includes a high-electricity multiple-phase converter, noise generated due to an increase in reactor vibrations and due to a sound pressure increase caused by a plurality of reactors is effectively inhibited, and silence is improved. A fuel cell system includes a multiple-phase converter provided between a fuel cell and a load device. The fuel cell system includes: selecting means (e.g., a controller) for selecting a driving phase of the multiple-phase converter in accordance with the load of the load device; and driving means (e.g., a controller) for driving a plurality of driving phases, when selected by the selecting means, at carrier frequencies so that these driving phases are nearly opposite to each other.