Title:
BATTERY DIAGNOSIS SYSTEM
Document Type and Number:
Japanese Patent JP2022007515
Kind Code:
A
Abstract:
To provide a battery diagnosis system that can increase the diagnosis speed with a simple configuration.SOLUTION: A battery diagnosis system 1 comprises a superimposed current application unit 10, a current value acquisition unit 20, a voltage value acquisition unit 30, an impedance calculation unit 40, and a diagnosis unit 50. The superimposed current application unit 10 applies a superimposed current formed by superimposing a plurality of frequency components through a battery 2. The current value acquisition unit 20 acquires a current value of the superimposed current applied through the battery 2. The voltage value acquisition unit 30 acquires a battery voltage of the battery through which the superimposed current has been applied. The impedance calculation unit 40 calculates the impedance for each of the plurality of frequency components using a discrete Fourier transform based on the superimposed current and the battery voltage. The diagnosis unit 50 diagnoses the battery 2 based on the impedance.SELECTED DRAWING: Figure 1
Inventors:
YAMAGAMI YUJI
YOSHIDA SHUHEI
UMEMOTO HISASHI
YOSHIDA SHUHEI
UMEMOTO HISASHI
Application Number:
JP2020110536A
Publication Date:
January 13, 2022
Filing Date:
June 26, 2020
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01R31/389; G01R31/367; G01R31/392; H01M10/48; H02J7/00
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office