Title:
Electric car
Document Type and Number:
Japanese Patent JP6350258
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a technique for reducing the time required for precharge of a smoothing capacitor.SOLUTION: An electric vehicle 2 includes: a primary battery 4; a primary power-source line 10 connected to the primary battery; a power control unit (PCU) 12 including a smoothing capacitor 14 for smoothing the voltage of the primary power-source line; switches 20a and 20b of a system main relay 20 for switching between conduction and nonconduction of the primary power-source line; a secondary battery 22 at low voltage; a secondary power-source line 24 connected to the secondary battery; a first DC-DC converter 28 capable of performing voltage step-up operation from the secondary power-source line to the primary power-source line; and a second DC-DC converter 30 capable of performing voltage step-down operation from the primary power-source line to the secondary power-source line at a portion that is more adjacent to the primary battery than the switches and between the primary power-source line and the secondary power-source line. The allowable input current of the first DC-DC converter is larger than the sum of the maximum output current of the second DC-DC converter and the maximum output current of the secondary battery.SELECTED DRAWING: Figure 1
Inventors:
Nozawa Takashi
Application Number:
JP2014253777A
Publication Date:
July 04, 2018
Filing Date:
December 16, 2014
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60L9/18; H02J1/00; H02J7/00; H02M3/28
Domestic Patent References:
| JP5336611A | ||||
| JP2014087234A | ||||
| JP2010083420A | ||||
| JP2007318849A |
Foreign References:
| US20100109437 | ||||
| US5783872 |
Attorney, Agent or Firm:
Kaiyu International Patent Office