Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a nickel hydrogen storage battery, capable of manufacturing the battery in which increase of internal resistance is suppressed while the durability of a negative electrode plate and the battery as well is improved, the nickel hydrogen storage battery, and a method of estimating dissolution concentration of yttrium ion.SOLUTION: A method of manufacturing a nickel hydrogen storage battery equipped with a negative electrode plate having hydrogen storage alloy powder coated with yttrium hydroxide and YOpowder includes: a negative electrode plate manufacturing process for manufacturing the negative electrode plate by coating a base material with a mixture obtained by mixing the hydrogen storage alloy powder with the YOpowder; and a liquid injecting process. In the negative electrode plate manufacturing process, the mixture obtained by mixing the hydrogen storage alloy powder with the YOpowder in an addition ratio set so that a first product S1 of the half-width HW of a peak on a (222) plane observed by powder X-ray diffraction of YOpowder and the addition ratio P of the YOpower in the mixture is 0.03-0.17 deg. wt% is used.
Abstract:
PROBLEM TO BE SOLVED: To provide a positive electrode active material for alkali storage batteries which enables suppression of the worsening of capacity characteristic in a high-temperature condition, and to provide a positive electrode for alkali storage batteries including the positive electrode active material for alkali storage batteries.SOLUTION: A positive electrode active material for alkali storage batteries comprises nickel hydroxide particles including nickel as a primary component, and a coating layer including cobalt and yttrium, and covering surfaces of the nickel hydroxide particles. The yttrium included by the coating layer accounts for 1-2 wt.% to 100 wt.% of the nickel hydroxide particles in terms of oxidation yttrium. In X-ray diffraction with Cu Kα rays, the half-peak width of (001)plane peak in the vicinity of 2θ ranging from 16.5 to 21.5° is 0.6 to 0.8°.
Abstract:
PROBLEM TO BE SOLVED: To provide a battery controller and a battery control method capable of performing input/output to and from a secondary battery by input/output conforming to the state of the secondary battery.SOLUTION: A battery ECU for controlling input/output to and from a secondary battery comprises: a voltage measurement unit 21 for measuring the voltage of the secondary battery; a voltage estimation unit 36 for calculating an estimated voltage value Ves which is a total value of estimated values calculated for each element included in the voltage; and a correlation arithmetic unit 39 for calculating, on the basis of a voltage error value ΔV which is a difference of the estimated voltage value Ves relative to the measured voltage value V of the voltage measurement unit 21 and an estimated value of each element, a coefficient of correlation of each element relative to the voltage error value ΔV. The correlation arithmetic unit 39 selects an element having a large coefficient of correlation.
Abstract:
PROBLEM TO BE SOLVED: To provide a component assembly apparatus in which a worker can easily carry out a component to be inserted, to which an insertion component has been fixed, from the apparatus.SOLUTION: A component assembly apparatus includes an insertion mechanism 20 pressing an insertion component, and a lifting mechanism 21 lifting up/down the insertion mechanism 20. The apparatus lowers the insertion mechanism 20 in the insertion direction to insert the insertion component into a component to be inserted. The apparatus further includes: a table 12 for mounting the component to be inserted at a component inserting position, the table having a surface on which the component to be inserted can slide upon tilting of the table 12; a table supporting portion 13 for supporting the table 12 in a tiltable way; and an engaging portion 26 to be lifted up/down by the lifting mechanism 21, the engaging portion capable of contacting an edge except for a tilting center on an underside of the table 12. A pressing portion 25b presses the insertion component in the insertion direction to insert the insertion component into the component to be inserted in a forward path in which the insertion mechanism 20 is lowered. The engaging portion 26 contacts the edge of the table 12 to tilt the table 12 in a return path in which the insertion mechanism is elevated.