Electric vehicle

• US 10,358,041 B2
• Filed: 12/06/2017
• Issued: 07/23/2019
• Est. Priority Date: 07/21/2017
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Lee, Woo Young, Choe, Gyu Yeong, Joo, Jung Hong, Ahn, Dong Sup, Jung, Jin Hwan, Song, Byeong Seob, Yang, Sihun
• Primary Examiner(s): Ro, Bentsu
• Application Number:
  US15/833,678
• Publication Number:
  US 20190023136A1
• Time in Patent Office: 594 Days
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• 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: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02P 27/06 using dc to ac converters or inverters H02P27/05 takes precedence
• 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 90/14 Plug-in electric vehicles

Abstract

An electric vehicle includes: a battery configured to be charged with a first voltage; and a converter configured to boost, when power of a second voltage that is lower than the first voltage is received, the power of the second voltage to the first voltage, and to transfer the first voltage to the battery, so that the battery is charged with power of the first voltage, wherein when the power of the first voltage is received, the power of the first voltage is transferred to the battery to charge the battery.

Claims

1. An electric vehicle comprising:

a battery configured to be charged with a first voltage;

a converter configured to boost, when power of a second voltage that is lower than the first voltage is received, the power of the second voltage to the first voltage, the converter further configured to transfer the first voltage to the battery so that the battery is charged with power of the first voltage; and

a switch disposed at an input side of the converter, and configured to open or close a path through which the power of the second voltage is transferred to the converter and the battery,

wherein the switch includes a first switch, a second switch, and a third switch,

the first switch and the third switch are turned on when the power of the first voltage is received so that the power of the first voltage is transferred to the battery,

the second switch and the third switch are turned on when the power of the second voltage is received so that the power of the second voltage is boosted by the converter and then transferred to the battery, and

when the power of the first voltage is received, the power of the first voltage is transferred to the battery to charge the battery.

2. The electric vehicle according to claim 1, wherein the switch includes a diode, a second switch, and a third switch,

the power of the first voltage is transferred to the battery through the diode and the third switch which is turned on;

and

the second switch and the third switch are turned on when the power of the second voltage is received so that the power of the second voltage is boosted by the converter and then transferred to the battery.

3. The electric vehicle according to claim 1, wherein the switch is selectively turned on and off in a charging mode, and

in a driving mode, the switch is turned off.

4. The electric vehicle according to claim 1, wherein the switch is disposed inside the converter.

5. The electric vehicle according to claim 1, wherein the switch is disposed outside the converter.

6. An electric vehicle comprising:

a battery configured to be charged with a first voltage;

a motor configured to drive a driving wheel; and

an inverter configured to convert power of the battery, and to provide the power of the battery to the motor,

wherein when power of a second voltage that is lower than the first voltage is received, the motor and the inverter operate as a converter to boost the power of the second voltage to the first voltage and to transfer the first voltage to the battery, so that the battery is charged with power of the first voltage, and

when the power of the first voltage is received, the power of the first voltage is transferred to the battery so that the battery is charged with the power of the first voltage.

7. The electric vehicle according to claim 6, further comprising a switch configured to open or close a path through which the power of the second voltage is transferred to the inverter and the motor.

8. The electric vehicle according to claim 7, wherein the switch includes a first switch, a second switch, and a third switch,

the first switch and the third switch are turned on when the power of the first voltage is received so that the power of the first voltage is transferred to the battery through the inverter;

and

the second switch and the third switch are turned on when the power of the second voltage is received so that the power of the second voltage is boosted by the inverter and the motor and then transferred to the battery.

9. The electric vehicle according to claim 7, wherein the switch is selectively turned on and off in a charging mode, and

in a driving mode, the switch is turned off.

10. The electric vehicle according to claim 6, wherein the switch includes a diode, a second switch, and a third switch,

the power of the first voltage is transferred to the inverter through the diode and the third switch which is turned on;

and

the second switch and the third switch are turned on if the power of the second voltage is received so that the power of the second voltage is boosted by the inverter and the motor and then transferred to the battery.

11. The electric vehicle according to claim 10, wherein the switch includes a first switch, a second switch, and a third switch,

the first switch and the third switch are turned on when the power of the first voltage is received so that the power of the first voltage is transferred to the battery through the inverter;

and

the second switch and the third switch are turned on when the power of the second voltage is received so that the power of the second voltage is boosted by the inverter and the motor and then transferred to the battery.

12. An electric vehicle comprising:

a battery configured to be charged with a first voltage;

a motor configured to drive a driving wheel;

an inverter configured to convert power of the battery, and to provide the power of the battery to the motor;

a switch configured to open or close a path through which power is transferred to the inverter and the motor; and

an external inductor configured to connect the switch to the motor,

wherein when power of a second voltage that is lower than the first voltage is received, the motor and the inverter operate as a converter to boost the power of the second voltage to the first voltage and to transfer the first voltage to the battery, so that the battery is charged with power of the first voltage, and

when power of the first voltage is received, the power of the first voltage is transferred to the battery so that the battery is charged with the power of the first voltage.

13. The electric vehicle according to claim 12, wherein the switch includes a diode, a second switch, and a third switch,

the power of the first voltage is transferred to the inverter through the diode and the third switch which is turned on;

and

the second switch and the third switch are turned on when the power of the second voltage is received so that the power of the second voltage is boosted by the inverter and the motor and then transferred to the battery.

14. The electric vehicle according to claim 12, wherein the switch is selectively turned on and off in a charging mode, and

in a driving mode, the switch is turned off.

15. The electric vehicle according to claim 12, wherein the external inductor is connected to a neutral terminal of the motor.

16. An electric vehicle comprising:

a battery configured to be charged with a first voltage;

a motor configured to drive a driving wheel;

an inverter configured to convert power of the battery, and to provide the power of the battery to the motor; and

a switch disposed in the inverter to be integrated into the inverter, and configured to open or close a path through which received power is transferred to the inverter and the motor,

wherein when power of a second voltage that is lower than the first voltage is received, the motor and the inverter operate as a converter to boost the power of the second voltage to the first voltage, and to transfer the first voltage to the battery so that the battery is charged with power of the first voltage, and

when power of the first voltage is, the power of the first voltage is transferred to the battery so that the battery is charged with the power of the first voltage.

17. An electric vehicle comprising:

a battery configured to be charged with a first voltage;

a motor configured to drive a driving wheel; and

an inverter configured, to convert power of the battery, and to provide the power of the battery to the motor,

wherein when power of a second voltage that is lower than the first voltage is received, the motor and the inverter operate as a converter to boost the power of the second voltage to the first voltage and to transfer the first voltage to the battery.