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    • 4. 发明专利
    • Paste evaluation method and paste evaluation device
    • JP5505318B2
    • 2014-05-28
    • JP2011006684
    • 2011-01-17
    • トヨタ自動車株式会社
    • 道明 有竹清市 松本甫 藤村康晴 奥田
    • G01N27/02
    • PROBLEM TO BE SOLVED: To provide a method and a device for evaluating paste capable of accurately evaluating a state of the paste to be coated on an electrode surface of a battery.SOLUTION: A container 11 which has a rotation mechanism 20 and a measurement part which measures AC impedance of paste P are used to measure the AC impedance of the paste P by the measurement part while rotating the paste P stored in the container 11 by the rotation mechanism 20. The measurement part has a pair of application electrode boards 31 and 32 arranged in parallel with each other in order to apply AC voltage to the paste P, and averages a measurement value of the AC impedance for one rotation or more by the rotation mechanism 20 to correct a measurement error to be generated from a parallelism error of the pair of application electrode boards 31 and 32. A reference electrode board 33 is arranged at an intermediate position between the application electrode boards 31 and 32, and the AC impedance of the paste P is calculated by using current Io flowing between the application electrode boards 31 and 32 and potential difference Vo between one application electrode board 31 and the reference electrode board 33.