ELECTRICAL CURRENT DETECTION DEVICE EQUIPPED WITH SHUNT RESISTOR, AND POWER SUPPLY DEVICE

Title:

ELECTRICAL CURRENT DETECTION DEVICE EQUIPPED WITH SHUNT RESISTOR, AND POWER SUPPLY DEVICE

Document Type and Number:

WIPO Patent Application WO/2016/047010

Kind Code:

A1

Abstract:

　In order to improve the accuracy of fault detection of a shunt resistor, an electrical current detection device of a certain aspect is provided with a shunt resistor (10) that includes a first conducting part, a second conducting part, a center conducting part situated between the first conducting part and the second conducting part, a first resistor (14) situated between the first conducting part and the center conducting part, and a second resistor (15) situated between the second conducting part and the center conducting part, the second resistor (15) having a greater resistance value than the first resistor. The electrical current detection device is further provided with: a signal output unit (20) that acquires a first detection signal on the basis of the potential of the first conducting part and the center conducting part, and acquires a second detection signal on the basis of the potential of the second conducting part and the center conducting part; an estimation unit (31) that estimates a first estimated current value from the first detection signal, and estimates a second estimated current value from the second detection signal; and an assessment unit (32) that compares the first estimated current value and the second estimated current value, and assesses whether there is a malfunction of the shunt resistor.

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Inventors:

YUGO MASAKI
FURUKAWA KIMIHIKO

Application Number:

PCT/JP2015/003361

Publication Date:

March 31, 2016

Filing Date:

July 03, 2015

Export Citation:

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Assignee:

SANYO ELECTRIC CO (JP)

International Classes:

G01R15/00; G01R31/50; B60L3/00

Foreign References:

JP2009204531A	2009-09-10
JP2002048821A	2002-02-15
JP2009098079A	2009-05-07
JP2013536424A	2013-09-19
JP2009122056A	2009-06-04
JP2012217276A	2012-11-08
JPS59191673U	1984-12-19

Attorney, Agent or Firm:

TOKUDA, Yoshiaki et al. (JP)
Yoshiaki Tokuda (JP)

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