Inverter/charger integrated device and method for controlling the same

• US 8,736,203 B2
• Filed: 03/16/2012
• Issued: 05/27/2014
• Est. Priority Date: 03/18/2011
• Status: Active Grant

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: Jang, Jae Hoon, Jang, Byung Woon
• Primary Examiner(s): Santana, Eduardo Colon
• Assistant Examiner(s): AGARED, GABRIEL T
• Application Number:
  US13/423,111
• Publication Number:
  US 20120235605A1
• Time in Patent Office: 802 Days
• Field of Search: 318/139, 318/440, 318/801
• US Class Current: 318/139
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/54 Windings for different functions
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: H02M 7/217 using semiconductor devices only
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

An inverter/charger integrated device is provided. The inverter/charger integrated device includes: a three-phase motor; a rectifying unit configured to rectify AC power for charging a battery and output the rectified AC power to a neutral point of the three-phase motor; a rectifier/inverter integrated unit configured to be connected to the rectifying unit and charge the battery; and a control unit configured to control the charging of the battery and an operation of the three-phase motor.

Claims

1. An inverter/charger integrated device comprising:

a three-phase motor;

a first rectifying unit configured to rectify three-phase AC power for high-speed charging of a battery;

a second rectifying unit configured to rectify single-phase AC power for low-speed charging of the battery;

a switch unit comprising at least one switch and configured to selectively connect the first or second rectifying unit to the three-phase motor according to a charging mode;

a rectifier/inverter integrated unit configured to be selectively connected to the first or second rectifying unit in order to charge the battery;

a low-voltage rectifying unit configured to decrease a DC voltage output by the rectifier/inverter unit in order to output low-voltage DC power; and

a control unit configured to control the switch unit to;

selectively disconnect the three-phase motor from the first and second rectifying units; and

selectively connect the first or second rectifying unit to the three-phase motor according to the charging mode.

2. The inverter/charger integrated device according to claim 1, wherein the control unit is further configured to control the switch unit to disconnect the first and second rectifying units from the three-phase motor when the three-phase motor is in a driving mode.

3. The inverter/charger integrated device according to claim 1, wherein the rectifier/inverter integrated is further configured to convert the AC power rectified by the first and second rectifying units into DC power in order to charge the battery.

4. The inverter/charger integrated device according to claim 1, wherein the rectifier/inverter integrated unit is further configured to drive the three-phase motor by using charged power of the battery in a driving mode.