Power conversion apparatus

Patent metadata

Field	Value
Publication number	US-9744856-B2
Application number	US-201514677362-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Apr 9, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A power conversion apparatus is configured to supply a power to an auxiliary device provided in a vehicle, and the power conversion apparatus includes: a primary side circuit including a primary side port; a secondary side circuit including a plurality of secondary side ports and magnetically coupled with the primary side circuit via a transformer; a control unit configured to control a transmitted power that is transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between a switching of the primary side circuit and a switching of the secondary side circuit; an inverter connected to a first secondary side port and supplying the power to the auxiliary device via the primary side port; and a charger connected to a second secondary side port and supplying the power to the auxiliary device via the primary side port.

First claim

What is claimed is:

1. A power conversion apparatus supplying a power to an auxiliary device provided in a vehicle, the power conversion apparatus comprising:
a primary side circuit including a primary side port;
a secondary side circuit including a plurality of secondary side ports and magnetically coupled with the primary side circuit via a transformer;
a control unit configured to control a transmitted power that is transmitted between the primary side circuit and the secondary side circuit by changing a phase difference between a switching of the primary side circuit and a switching of the secondary side circuit;
an inverter connected to a first secondary side port of the plurality of secondary side ports and supplying the power to the auxiliary device via the primary side port; and
a charger connected to a second secondary side port of the plurality of secondary side ports and supplying the power to the auxiliary device via the primary side port.

2. The power conversion apparatus according to claim 1 , wherein
when the power is supplied from the charger to the auxiliary device, the control unit insulates the charger from the inverter.

3. The power conversion apparatus according to claim 1 , wherein
the secondary side circuit includes a secondary side first upper arm, a secondary side second upper arm, a secondary side first lower arm, and a secondary side second lower arm; and
when the power is supplied from the charger to the auxiliary device, the control unit fixes the secondary side first upper arm and the secondary side second upper arm to an OFF state, and fixes the secondary side first lower arm and the secondary side second lower arm to an ON state.

4. The power conversion apparatus according to claim 1 , wherein
during parking of the vehicle, the power is supplied from the charger to the auxiliary device.

5. The power conversion apparatus according to claim 1 , further comprising:
a secondary side high-voltage power supply connected to the first secondary side port and the second secondary side port and supplying the power to the auxiliary device via the primary side port, wherein
during running of the vehicle, the power is supplied from the secondary side high-voltage power supply to the auxiliary device.

6. The power conversion apparatus according to claim 5 , wherein
during breakdown of the secondary side high-voltage power supply, the power is supplied from the inverter to the auxiliary device.

Assignees

• Toyota Motor Co Ltd

Inventors

• Nagashita Kenichiro

Classifications

• H02M3/33584

  Bidirectional converters · CPC title

• B60L11/1812

  Operations & Transport · mapped topic

• H02M1/10

  Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC · CPC title

• H02M3/3378

  in a push-pull configuration of the parallel type (H02M3/3374 takes precedence) · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title