Title:
REMOTE DIAGNOSIS DEVICE, REMOTE DIAGNOSIS SYSTEM, AND COMPUTER PROGRAM FOR POWER SUPPLY EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2024/096055
Kind Code:
A1
Abstract:
Provided are a remote diagnosis device, a remote diagnosis system, and a computer program for power supply equipment. This remote diagnosis device comprises: an acquiring portion for acquiring, from power supply equipment via a communication network, measured data of a ripple current flowing to an electricity storage element used in an electric power converting circuit part of the power supply equipment, and measured data of a voltage applied to the electricity storage element; a deriving portion for deriving a frequency characteristic of an impedance component of the electricity storage element on the basis of the acquired measured data of the ripple current and the voltage; a calculating portion for calculating a capacitance and an equivalent series resistance value of the electricity storage element from the derived impedance component frequency characteristic; and an estimating portion for estimating a degradation state of the electricity storage element on the basis of the calculated capacitance and the equivalent series resistance value.
Inventors:
NAGANO TOMOYUKI (JP)
Application Number:
PCT/JP2023/039413
Publication Date:
May 10, 2024
Filing Date:
November 01, 2023
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
G01R31/00; H02M7/04; H02M7/12; H02M7/48
Attorney, Agent or Firm:
KOHNO, Hideto et al. (4-3 Tsuriganecho 2-chome, Chuo-ku, Osaka-sh, Osaka 35, JP)
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