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Patent Searching and Data


Title:
DEVICE FOR DETECTING WELDING OF RELAY
Document Type and Number:
WIPO Patent Application WO/2014/041796
Kind Code:
A1
Abstract:
In the present invention, the connection between an external power supply and a unit for detecting welding of a relay is disestablished at least when a short circuit is detected, thereby preventing the short circuit from being falsely detected in the event that the short circuit and the welding of the relay can both be detected. A device (100) for detecting welding of a relay detects welding of a relay provided to a path via which a cell (152) is charged by an external power supply (160). Welding of a power-supply-side relay (101) or a ground-side relay (102) is detected on the basis of a current flowing disproportionately more toward the external power supply (160) than the power-supply-side relay (101) or ground-side relay (102) when a control unit (106) has deactivated the power-supply-side relay (101) or ground-side relay (102) during an interrupting in charging. A disconnecting switch (104) establishes or disestablishes the connection between the external power supply (160) and a weld-detection switch (103).

Inventors:
MOCHIZUKI KENTO
TAZAKI SHINTARO
Application Number:
PCT/JP2013/005360
Publication Date:
March 20, 2014
Filing Date:
September 11, 2013
Export Citation:
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Assignee:
PANASONIC CORP (JP)
International Classes:
H02H7/00; B60L3/00; B60L11/18; G01R31/02; H01H47/00; H02H3/16; H02J7/00
Foreign References:
JP5011443B12012-08-29
JP2009100568A2009-05-07
JP2010239845A2010-10-21
Other References:
See also references of EP 2897242A4
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
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