Title:
電源システム
Document Type and Number:
Japanese Patent JP6468203
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect disconnection failure on the output side of a voltage transducer, without providing a detector of a DC current output from the voltage transducer.SOLUTION: A DCDC converter 200 steps down the output voltage from a main battery 100 according to a voltage command value Vdc*, and outputs the power supply voltage of an accessory load 205 to power supply wiring 201. When the SOC of an auxiliary battery 250 is higher than a reference value, supplementary power reduction control is executed, and the voltage command value Vdc* is lower than usual. When the DCDC converter 200 is not in overload state, and the auxiliary battery 250 is in the discharge state, although the supplementary power reduction control is not applied, the controller 100 increases the voltage command value Vdc* more than usual. When the voltage of the power supply wiring 201 does not increase according to the voltage command value Vdc* in this state, disconnection between the DCDC converter 200 and the power supply wiring 201 is detected.SELECTED DRAWING: Figure 1
Inventors:
Nozawa Takashi
Application Number:
JP2016004207A
Publication Date:
February 13, 2019
Filing Date:
January 13, 2016
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H02M3/28; G01R31/02; H02J7/00
Domestic Patent References:
| JP2007135284A | ||||
| JP2004350426A | ||||
| JP2004248465A | ||||
| JP2009183089A |
Foreign References:
| WO2011001606A1 |
Attorney, Agent or Firm:
Fukami patent office
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