Title:
ELECTRICAL FAULT DETECTION DEVICE AND VEHICLE POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/170556
Kind Code:
A1
Abstract:
An electrical fault detection device (10) installed in a vehicle ensures detection accuracy while avoiding the use of expensive components and suppressing total costs. The vehicle includes a power storage unit (20) that is installed as insulated from a chassis ground of the vehicle, a first switch (MRp) that is inserted into a plus line (Lp), and a second switch (MRm) that is inserted into a minus line (Lm). The electrical fault detection device (10) installed in the vehicle includes a coupling capacitor (Cc), an AC output unit (13a), a first voltage measurement unit (13b), a first determination unit (13c), a voltage-dividing circuit (11), a second voltage measurement unit (12), and a second determination unit (13d). The voltage-dividing circuit (11) connects between the plus line (Lp) that is between the first switch (MRp) and one end of a load (2), and the minus line (Lm) that is between the second switch (MRm) and the other end of the load (2).
Inventors:
NAKAYAMA MASATO
KUNIMITSU TOMONORI
HAMADA TAISUKE
TANAKA YASUHARU
KUNIMITSU TOMONORI
HAMADA TAISUKE
TANAKA YASUHARU
Application Number:
PCT/JP2019/048018
Publication Date:
August 27, 2020
Filing Date:
December 09, 2019
Export Citation:
Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
B60L3/00; G01R31/50
Domestic Patent References:
| WO2018211933A1 | 2018-11-22 |
Foreign References:
| JP2018072169A | 2018-05-10 | |||
| JP2007240426A | 2007-09-20 | |||
| JP2018179835A | 2018-11-15 | |||
| JP2018026888A | 2018-02-15 | |||
| JP2014029293A | 2014-02-13 | |||
| KR101584267B1 | 2016-01-11 | |||
| JP2003250201A | 2003-09-05 | |||
| JP2007327856A | 2007-12-20 |
Other References:
See also references of EP 3929021A4
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
Download PDF: