公开(公告)号：US20170358987A1

公开(公告)日：2017-12-14

申请号：US15538858

申请日：2015-11-18

申请人： Hitachi Automotive Systems, Ltd.

发明人： Takayuki OOUCHI ,  Takae SHIMADA ,  Fumihiro SATO ,  Shintaro TANAKA ,  Kenji KUBO ,  Eigo KISHIMOTO

IPC分类号： H02M3/335 ,  H02J7/00 ,  B60L11/18

摘要： An object of the present invention is to provide a highly efficient power supply device.A power supply device 1 according to the present invention includes a bidirectional DC-DC converter 3 and an insulated DC-DC converter 4. The bidirectional DC-DC converter 3 receives a main battery 5 and outputs a direct-current link voltage Vlink. The insulated DC-DC converter 4 receives the link voltage Vlink and supplies power to a load 7. The link voltage Vlink, which is an output of the bidirectional DC-DC converter 3, changes according to the output voltage of the insulated DC-DC converter 4.

公开(公告)号：US20170117731A1

公开(公告)日：2017-04-27

申请号：US15301613

申请日：2015-03-16

申请人： Hitachi Automotive Systems, Ltd.

发明人： Takae SHIMADA ,  Hiroyuki SHOJI ,  Takayuki OOUCHI ,  Fumihiro SATO ,  Kenji KUBO ,  Eigo KISHIMOTO

IPC分类号： H02J7/00 ,  B60L11/18 ,  H02M3/158 ,  H02M7/217 ,  H02M3/335

CPC分类号： H02J7/0052 ,  B60L53/22 ,  B60L2210/10 ,  B60L2210/30 ,  B60Y2200/91 ,  B60Y2400/112 ,  H02J1/102 ,  H02J7/022 ,  H02J2007/0059 ,  H02M3/155 ,  H02M3/158 ,  H02M3/28 ,  H02M3/335 ,  H02M3/33507 ,  H02M7/12 ,  H02M7/217 ,  H02M7/219 ,  H02M2001/007 ,  H02M2001/008 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T10/92 ,  Y02T90/127 ,  Y02T90/14

摘要： Provided is a power source device having a high efficiency. A power source device 1 includes an insulated AC-DC converter 2 which receives a voltage of an AC power source 10 and outputs a link voltage Vlink, a bidirectional DC-DC converter 3 which receives the link voltage Vlink to charge a main battery 5, an insulated DC-DC converter 4 which receives the link voltage Vlink to supply power to a load 7, an operation mode in which the power is supplied from the AC power source 10 to the main battery 5, and an operation mode in which the power is supplied from the main battery 5 to the load 7.

公开(公告)号：US20180166903A1

公开(公告)日：2018-06-14

申请号：US15576344

申请日：2016-04-27

申请人： Hitachi Automotive Systems, Ltd.

发明人： Fumihiro SATO ,  Takae SHIMADA ,  Takuya ISHIGAKI ,  Takayuki OUCHI ,  Hiroyuki SHOJI ,  Naoya TAKAHASHI ,  Eigo KISHIMOTO

IPC分类号： H02J7/02 ,  B60L11/18

摘要： An object of the present invention is to provide a charging apparatus having high efficiency of charging a battery by inputting an alternating current voltage. A charging apparatus that charges a direct current battery includes a step-down converter unit to which a direct current voltage from a power supply is input and that converts the direct current voltage, and when a voltage of the direct current battery is between a predetermined first voltage smaller than a charge completion voltage of the direct current battery and the charge completion voltage, a variable voltage that increases from the first voltage to the charge completion voltage in accordance with charging of the direct current battery is input to the step-down converter unit.