摘要:
A fuel cell power supply includes a fuel cell voltage detection means which detects a terminal-to-terminal voltage of the fuel cell; an internal resistance calculation element configured to supply electric power from a battery to a motor via a second DC-DC converter and configured to calculates a resistance value of an internal resistance of the fuel cell on the basis of a detection voltage of the fuel cell in a state where a current output of the fuel cell is stopped, a detection voltage of a terminal-to-terminal voltage of the fuel cell in a state where the output current of the fuel cell is adjusted to a value, and the value; and a deterioration level determination element configured to determines a deterioration level of the fuel cell on the basis of a change in the resistance value of the internal resistance of the fuel cell.
摘要:
A method of producing a hollow valve comprises the step for forming material having a blind hole along its axis, the step for extruding the material in a shaping hole in a die downward and the step for lowering a lower part of a pin to an upper part of a smaller-diameter portion of the shaping hole to allow the material to plastically flow downward through a gap between the lower part of a pin and the smaller-diameter portion of the shaping hole thereby molding a primary intermediate of the hollow valve having a stem and a head at the upper end of the stem through which a hole is formed.
摘要:
The present invention provides a polarized electrode 12 containing mixed activated carbon composed of at least two activated carbons with different specific surface areas, and the specific surface area of the mixed activated carbon is not less than 900 m2/g and less than 1900 m2/g. By setting the specific surface area of the mixed activated carbon to less than 1900 m2/g, the resistance reduction ratio of the polarized electrode 12 rapidly increases.
摘要:
A fuel cell power supply includes a fuel cell voltage detection means which detects a terminal-to-terminal voltage of the fuel cell; an internal resistance calculation means which supplies electric power from a battery to a motor via a second DC-DC converter and calculates a resistance value of an internal resistance of the fuel cell on the basis of a detection voltage of the fuel cell in a state where a current output of the fuel cell is stopped, a detection voltage of a terminal-to-terminal voltage of the fuel cell in a state where the output current of the fuel cell is adjusted to a value, and the value; and a deterioration level determination means which determines a deterioration level of the fuel cell on the basis of a change in the resistance value of the internal resistance of the fuel cell.
摘要:
An alkali-activated carbon for an electric double layer capacitor electrode is provided in which the alkali-activated carbon has a first pore group having a pore diameter D in the range of D≦2 nm, a second pore group having a pore diameter D in the range of 2 nm
摘要:
To produce activated carbon for an electrode of an electric double-layer capacitor, the following steps are carried out sequentially: a step of subjecting a massive mesophase pitch to a pulverizing treatment to provide a pulverized powder; a step of subjecting the pulverized powder to an infusibilizing treatment under conditions of a temperature in a range of 300° C. (inclusive) to 450° C. (inclusive) in the atmospheric air current, a step of subjecting the pulverized powder to a carbonizing treatment under conditions of a temperature in a range of 600° C. (inclusive) to 900° C. (inclusive) in an inert gas current to provide a carbonized powder, a step of subjecting the carbonized powder to an alkali activating treatment under conditions of a temperature in a range of 500° C. (inclusive) to 1,000° C. (inclusive) in an inert gas atmosphere, followed by the post treatments, thereby producing alkali-activated carbon, and a step of subjecting the alkali-activated carbon to a pulverizing treatment. If an electrode is produced using the activated carbon, the electrode density can be increased.
摘要:
A method for preparing the electrolytic solution of an electric double-layer capacitor is provided, which undergoes cyclical charging and discharging within a predetermined operating range of voltage. The capacitor includes the electrolytic solution, electrodes and a casing for housing the electrolytic solution and electrodes. The method includes the step of preparing an ion concentration of the electrolytic solution so that the electrolytic solution turns to a nonconductor at a first predetermined voltage, which is so set as to be equal to or greater than the upper limit of the predetermined operating range of voltage and less than or equal to the maximum allowable voltage of the capacitor.
摘要:
A cylindrical electric double-layer capacitor 1 includes an electrode roll made by spirally rolling a superposed assembly formed of a band-shaped positive pole and a band-shaped negative pole superposed on each other with a first separator interposed therebetween and a second separator superposed on one of the band-shaped positive and negative poles so that the second separator is located on an outermost side, and a vessel in which the electrode roll is accommodated. A cylindrical electrode is mounted on the electrode roll to come into contact with an outer peripheral surface of the electrode roll. The polarity of the cylindrical electrode is set to be opposite from that of a portion of one of the band-shaped positive and negative poles which is located on an outermost periphery of the electrode roll.
摘要:
Disclosed herein is a process for producing active carbon suitable for use in electrodes for an organic solvent type electric double layer capacitor, comprising calcining an easily graphitizable organic substance and then subjecting the resultant carbonized product to an alkali activation treatment, wherein the alkali activation treatment comprises a first alkali activation treatment at a temperature within a first range and a second alkali activation treatment at a temperature within a second range, said temperature within the second range being higher than that of the first activation treatment, and one of both alkali activation treatments is performed after the other alkali activation treatment.
摘要:
A plasma processing method and an apparatus for carrying out the method in which a processing gas is introduced into a processing chamber, and periodically an amplitude modulated or frequency-modulated high-frequency voltage is applied to plasma generating means, to generate a discharge plasma and to carry out predetermined processing by the plasma.