Title:
POWER SUPPLY SYSTEM
Document Type and Number:
Japanese Patent JP2017001425
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent a relay failure in a power supply system that includes a step-up converter.SOLUTION: A power supply state detection circuit 42 includes: a capacitor 13 connected to a battery 10; a voltage detector 30 for detecting a voltage of the capacitor 13; S1 (16) and S2 (17) for turning on and off first positive-pole and first negative-pole detection cable ways 11a, 12a that connect the capacitor 13 to positive and negative poles of the battery 10; second positive-pole and second negative-pole relays 18, 19 for turning on and off second positive-pole and second negative-pole cable ways 11b, 12b that connect the capacitor 13 to positive-pole input terminal 31 and negative-pole input terminal 32 of a voltage detector 30; and positive-pole and negative-pole grounding resistors 20, 21, and positive-pole and negative-pole Zener diodes 22, 23 for connecting the second positive-pole and second negative pole detection cable ways 11a, 12b to the ground.SELECTED DRAWING: Figure 1
Inventors:
TANAKA HIROMASA
OKADA TAKAHIRO
HANAOKA YASUTAKA
OKADA TAKAHIRO
HANAOKA YASUTAKA
Application Number:
JP2015114592A
Publication Date:
January 05, 2017
Filing Date:
June 05, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
B60R16/02; B60L3/00; G01R27/18; H02J7/00; H02M3/155
Domestic Patent References:
| JP2011017586A | 2011-01-27 | |||
| JP2011117828A | 2011-06-16 | |||
| JP2008309751A | 2008-12-25 | |||
| JP2003254998A | 2003-09-10 |
Foreign References:
| US20080310063A1 | 2008-12-18 | |||
| US20050146335A1 | 2005-07-07 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office