APPARATUS FOR CONVERTING POWER OF ELECTRIC VEHICLE

• US 20160121741A1
• Filed: 07/09/2015
• Published: 05/05/2016
• Est. Priority Date: 10/31/2014
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: KIM, Heon Hee
• Granted Patent: US 9,878,624 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: B60L 58/10 for monitoring or controlling batteries
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y04S 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

Provided is a power converting apparatus of an electric vehicle which reduces the number of power semiconductor components to efficiently perform charging, driving, and V2G (vehicle to grid) modes in accordance with choice by a user. The device includes a charging unit which charges commercial power into a battery; an inverting unit which supplies battery power to drive a motor; a switching unit which is connected to the motor, the charging unit, and the inverting unit to be turned on/off in accordance with a switching control signal in accordance with an operation mode selection; and a controller which provides the switching control signal to the switching unit in accordance with a mode selection signal to perform the selected mode operation.

Claims

1. A power converting apparatus of an electric vehicle, comprising:

a charging unit which charges commercial power into a battery;

an inverting unit which supplies battery power to drive a motor;

a switching unit which is connected to the motor, the charging unit, and the inverting unit to be turned on/off in accordance with a switching control signal in accordance with an operation mode selection; and

a controller which provides the switching control signal to the switching unit in accordance with a mode selection signal to perform the selected mode operation.

2. The apparatus of claim 1, wherein the charging unit includes a plurality of switching elements and diodes are connected in parallel to the plurality of switching elements.

3. The apparatus of claim 1, further comprising:

a mode selector which supplies a mode selection signal selected from the battery charging mode, the motor driving mode, and the V2G mode by the user, to the controller.

4. The apparatus of claim 3, wherein when the charging mode is selected through the mode selector by a user, the controller controls the switching unit to be turned off and converts commercial power into battery storage power, by operating the switching element of the charging unit and then stores the power in the battery.

5. The apparatus of claim 1, wherein the inverting unit is connected to the switching unit and includes a plurality of switching elements and diodes are connected in parallel to the plurality of switching elements.

6. The apparatus of claim 3, wherein when the motor driving mode is selected through the mode selector by the user, the controller controls the switching unit to be turned on and operates the switching elements of the inverting unit to convert the battery power voltage into power for driving the motor and supply the power to the motor.

7. The apparatus of claim 3, wherein when the V2G mode is selected by the user, the controller controls the switching unit and the switching elements of the charging unit to be turned off and operates the switching elements of the inverting unit to transmit the battery storage power to a power source system through the charging unit.

8. The apparatus of claim 1, wherein the commercial power source is a three-phase commercial power source.

9. The apparatus of claim 2, wherein the plurality of switching elements of the charging unit is MOSFETs.

10. The apparatus of claim 5, wherein the plurality of switching elements of the inverting unit is MOSFETs.

11. The apparatus of claim 3, wherein the charging unit and the inverting unit bi-directionally operate in accordance with the control of the controller in order to perform the operation mode selected through the mode selector.