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Title:
RELAY WELDING DETECTION DEVICE, POWER SUPPLY CONTROL DEVICE INCLUDING SAME, AND WELDING DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/211933
Kind Code:
A1
Abstract:
A relay welding detection device has a voltage generation unit, a first and second resistor string, and a relay welding detection unit. A first relay is provided on a first wiring that connects a load and a first terminal of a DC power supply for a vehicle, and a second relay is provided on a second wiring that connects a load and a second terminal of the DC power supply. The first resistor string is connected between the first terminal of the DC power supply and the voltage generation unit, and the second resistor string is connected between the second terminal of the DC power supply and the voltage generation unit. The relay welding detection unit detects the potential at a connection point of two resistors in each of the first and second resistor string and detects the presence of welding of the first relay and the second relay.

Inventors:
MATSUKAWA KOJI
NAKAZAWA TAKASHI
MASAI SHIGEO
Application Number:
PCT/JP2018/016900
Publication Date:
November 22, 2018
Filing Date:
April 26, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B60L3/00; G01R31/50; H02H7/00
Domestic Patent References:
WO2004088696A12004-10-14
Foreign References:
JP2003169401A2003-06-13
JP2013068479A2013-04-18
JP2014048050A2014-03-17
JP2015214264A2015-12-03
JP2006216516A2006-08-17
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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