In-vehicle charging apparatus

Patent metadata

Field	Value
Publication number	US-2016172897-A1
Application number	US-201414778377-A
Country	US
Kind code	A1
Filing date	Mar 7, 2014
Priority date	Mar 22, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

An in-vehicle charging apparatus ( 100 ) has: a charge control ECU ( 10 ), which operates with power supplied from a low-voltage battery ( 16 ), and which controls charging; an S 2 switch, which is on/off controlled by means of the charge control ECU ( 10 ), and which reduces a voltage of the pulse signals when the switch is in the on-state; and a switch (SW 1 ), which is controlled to be in an on-state by means of units other than the charge control ECU ( 10 ), and which reduces the voltage of the pulse signals when the switch is in the on-state. In the cases where the switch (SW 1 ) is turned on, power from a charging cable ( 200 ) is supplied to the low-voltage battery ( 16 ) or the charge control ECU ( 10 ).

First claim

1 .- 5 . (canceled)

6 . An in-vehicle charging apparatus that charges a high voltage battery and a low voltage battery with use of a charging cable configured to start supply of power to the in-vehicle charging apparatus based on a state of a voltage of a pulse signal preliminarily sent to the in-vehicle charging apparatus, the in-vehicle charging apparatus comprising:
a charging control section that operates with power supplied from the low voltage battery, and controls the charging; a voltage drop switch whose on/off is controlled by the charging control section, the voltage drop switch being configured to reduce the voltage of the pulse signal when the voltage drop switch is in an on state; and a first switch that is turned on by a component other than the charging control section and reduces the voltage of the pulse signal when the first switch is in an on state, wherein the power from the charging cable is supplied to the low voltage battery or the charging control section when the first switch is turned on.

7 . The in-vehicle charging apparatus according to claim 6 further comprising:
an AC/DC conversion section that converts the power from the charging cable from AC to DC; and
a second switch that is turned on by a component other than the charging control section to allow the power from the charging cable to be supplied to the AC/DC conversion section, wherein,
when the first switch is turned on, the second switch is turned on to allow the power from the charging cable to be supplied to the AC/DC conversion section, and
the AC/DC conversion section converts the power from the charging cable from AC to DC and supplies the power to the charging control section.

8 . The in-vehicle charging apparatus according to claim 6 further comprising:
an AC/DC conversion section that converts the power from the charging cable from AC to DC; and
a second switch that is turned on by a component other than the charging control section to allow the power from the charging cable to be supplied to the AC/DC conversion section, wherein,
when the first switch is turned on, the second switch is turned on to allow the power from the charging cable to be supplied to the AC/DC conversion section, and
the AC/DC conversion section converts the power from the charging cable from AC to DC and supplies the power to the low voltage battery that serves as a power source of the charging control section.

9 . The in-vehicle charging apparatus according to claim 7 further comprising a third switch that is turned on by a component other than the charging control section to prevent the power from the AC/DC conversion section from being supplied to the low voltage battery, wherein,
when the first switch and the second switch are turned on, the third switch is turned off to prevent the power from the AC/DC conversion section from being supplied to the low voltage battery.

10 . The in-vehicle charging apparatus according to claim 9 further comprising an auxiliary charging switch capable of turning on the first switch and the second switch and turning off the third switch at a same time.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Iisaka Atsushi

Classifications

• B60L53/66

  Data transfer between charging stations and vehicles · CPC title

• B60L53/16

  Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles · CPC title

• B60L53/30

  Constructional details of charging stations · CPC title

• H02J2207/10

  Control circuit supply, e.g. means for supplying power to the control circuit · CPC title

• B60L58/20

  having different nominal voltages · CPC title