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Title:
BATTERY MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/149774
Kind Code:
A1
Abstract:
A battery measurement device (50) comprising: a signal control unit (56) provided on a first electrical path (81) that links a positive electrode and a negative electrode of a storage battery (42), the signal control unit causing a prescribed AC signal to be outputted from the storage battery; a response signal input unit (50a) provided on a second electrical path (82) that links the positive electrode and the negative electrode, the response signal input unit inputting, via the second electrical path, a response signal of the storage battery that is a response to the AC signal; and a computation unit (53) that calculates, on the basis of the response signal, information pertaining to the complex impedance of the storage battery. A magnetic-flux-transmitting region (S10) is formed as a region surrounded by the storage battery and the second electrical path, the magnetic-flux-transmitting region being such that magnetic flux based on the AC signal flowing through the first electrical path passes therethrough. The size of the magnetic-flux-transmitting region is set so that the error between the actual complex impedance of the storage battery and the complex impedance calculated by the computation unit is within the range of ±1 mΩ.

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Inventors:
KITAGAWA MASAAKI (JP)
MATSUKAWA KAZUO (JP)
YAMAGAMI YUJI (JP)
UCHIYAMA MASAKI (JP)
Application Number:
PCT/JP2021/002069
Publication Date:
July 29, 2021
Filing Date:
January 21, 2021
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
G01R27/02; G01R31/389; H01M10/48; H02J7/00
Domestic Patent References:
WO2019021099A12019-01-31
Foreign References:
JP2018041581A2018-03-15
JP2017220293A2017-12-14
JP2014157778A2014-08-28
JPH05172875A1993-07-13
JP2012074198A2012-04-12
JP3203153U2016-03-17
JP2006322857A2006-11-30
JP2015224876A2015-12-14
JP2014044106A2014-03-13
JP2017058176A2017-03-23
Other References:
ANDOU, MASANORI: "principle and method of a circuit measurement", INTERFACE, vol. 17, no. 1, 1 January 1991 (1991-01-01), pages 156 - 173
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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