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Estimation apparatus, estimation method, and computer program

a technology of estimation apparatus and computer program, which is applied in the direction of electrochemical generators, instruments, transportation and packaging, etc., can solve the problem that the estimation accuracy of the degradation of the energy storage device may not be sufficient, and achieve the effect of accurately estimating the degradation of the energy storage devi

Active Publication Date: 2022-08-11
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]An object of the present invention is to provide an estimation apparatus, an estimation method, and a computer program capable of accurately estimating degradation of an energy storage device.
[0011]In the present invention, it is possible to accurately estimate the degradation of the energy storage device.

Problems solved by technology

In the conventional method, the estimation accuracy of the degradation of the energy storage device may not be sufficient.

Method used

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  • Estimation apparatus, estimation method, and computer program
  • Estimation apparatus, estimation method, and computer program
  • Estimation apparatus, estimation method, and computer program

Examples

Experimental program
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first embodiment

[0073]Hereinafter, the present invention will be specifically described with reference to the drawings illustrating embodiments.

[0074]FIG. 7 is a diagram illustrating a configuration of a monitoring apparatus 151. The monitoring apparatus 151 includes an analog-to-digital (A / D) converter 53, a history creation unit 54, a counter 55, a storage unit 56, a communication unit 57, and an estimation apparatus 101. A current sensor 41, a voltage sensor 42, and a temperature sensor 43 are connected to the monitoring apparatus 151.

[0075]Some of the components included in the monitoring apparatus 151 may be disposed away from other components. For example, the estimation apparatus 101 may be disposed at a remote place and communicate with the communication unit 57. Further, a server disposed at a remote location and connected to a network may function as the estimation apparatus 101.

[0076]The monitoring apparatus 151 monitors the degradation of the energy storage device (lithium ion secondary...

second embodiment

[0129]FIG. 17 is a block diagram illustrating an example of the configuration of the estimation apparatus 101 according to a second embodiment. In the drawings, the same portions as those in FIG. 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

[0130]The storage unit 23 of the estimation apparatus 101 according to the second embodiment has the same configuration as the estimation apparatus 101 according to the first embodiment except that teacher data DB233 and a degradation coefficient output model 234 are stored.

[0131]FIG. 18 is an explanatory diagram illustrating an example of the record layout of the teacher data DB233. The teacher data DB233 stores a large number of pieces of teacher data in order to generate the degradation coefficient output model 234.

[0132]The teacher data DB233 stores a No. column, a graph column after Fourier transform, and a degradation coefficient k column. The No. column stores a No. for identifying each teacher ...

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Abstract

The estimation device 101 is provided with: an acquisition unit 201 for acquiring time-series data on the SOC of a power storage device; a decomposition unit 202 for decomposing a waveform indicating a fluctuation in the SOC in the time-series data into waveform components of a plurality of frequency regions; and an estimation unit 204 for estimating the deterioration of the power storage device on the basis of the intensities of the waveform components and a deterioration coefficient.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a national stage application, filed under 35 U.S.C. § 371, of International Application No. PCT / JP2020 / 020137, filed May 21, 2020, which international application claims priority to and the benefit of Japanese Patent Application No. 2019-097997, filed May 24, 2019; the contents of both of which as are hereby incorporated by reference in their entireties.BACKGROUNDTechnical Field[0002]The present invention relates to an estimation apparatus, an estimation method, and a computer program for estimating degradation of an energy storage device.Description of Related Art[0003]An energy storage device, which can store electric energy and supply energy as a power source when needed, has been used. The energy storage device has been applied to portable equipment, power supply apparatuses, transportation equipment including automobiles and trains, equipment for industries including aviation, space, and construction, and the like...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01R31/392G01R31/3842H02J7/00H01M10/48
CPCG01R31/392H01M10/48H02J7/0047G01R31/3842G01R31/382H02J7/00G01R31/367
Inventor UKUMORI, NAN
Owner GS YUASA INT LTD
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