ABNORMALITY DETECTION DEVICE, AND ABNORMALITY DETECTION METHOD

Title:

ABNORMALITY DETECTION DEVICE, AND ABNORMALITY DETECTION METHOD

Document Type and Number:

WIPO Patent Application WO/2022/202350

Kind Code:

A1

Abstract:

Provided are an abnormality detection device and an abnormality detection method with which it is possible to satisfactorily detect an abnormality of voltage on a power path to which two power supply units are connected.　An abnormality detection device (70) for use in a power supply system (100) comprising: a first power supply unit (90); a second power supply unit (93); a first conductive path (1) and a second conductive path (2) for transmitting electricity between the first power supply unit (90) and the second power supply unit (93); and a relay (10) that switches between a conduction enable state and a blocking state in the first conductive path (1) and the second conductive path (2). The abnormality detection device (70) comprises: a first voltage detection unit (50) for detecting a first voltage (V1) on the first power supply unit (90) side relative to the relay (10) in the first conductive path (1) and the second conductive path (2); a second voltage detection unit (51) for detecting a second voltage (V2) on the second power supply unit (93) side relative to the relay (10) in the first conductive path (1) and the second conductive path (2); and a detection unit (30B) for detecting an abnormality on the basis of the first voltage (V1) and the second voltage (V2) when the relay (10) is in the blocking state.

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Inventors:

TANAKA HIROKI (JP)
WAKAZONO KEISUKE (JP)
SUGISAWA YUUKI (JP)

Application Number:

PCT/JP2022/010466

Publication Date:

September 29, 2022

Filing Date:

March 10, 2022

Export Citation:

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Assignee:

AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

International Classes:

H02H3/20; H02H7/00; H02H7/18; H02H7/20

Foreign References:

JP2017216790A	2017-12-07
JP2018006252A	2018-01-11
JP2019062622A	2019-04-18

Attorney, Agent or Firm:

GRANDOM PATENT LAW FIRM (JP)

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