Battery charging apparatus and method of electric vehicle

• US 9,656,557 B2
• Filed: 05/19/2015
• Issued: 05/23/2017
• Est. Priority Date: 11/25/2014
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Park, Hyun Soo
• Primary Examiner(s): Rossoshek, Helen
• Application Number:
  US14/715,786
• Publication Number:
  US 20160144731A1
• Time in Patent Office: 735 Days
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 53/00 Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
• CPC Class Codes: B60L 58/24 for controlling the temperature of batteries
• 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 90/14 Plug-in electric vehicles

Abstract

A battery charging apparatus and method of an electric vehicle are provided. The battery charging apparatus includes a temperature sensor that is configured to sense a temperature of a battery. In addition, a controller is configured to discharge the battery and then charge the battery using any one of a low voltage converter and a motor based on the temperature.

Claims

1. A battery charging apparatus of electric vehicle, comprising:

a temperature sensor configured to sense a temperature of a battery; and

a controller configured to discharge the battery and then charge the battery using any one of a low voltage converter and a motor based on the temperature,

wherein the controller is configured to discharge the battery using the low voltage converter when the temperature of the battery ranges from a first threshold temperature to a second threshold temperature.

2. The battery charging apparatus of electric vehicle according to claim 1, wherein the controller is configured to discharge the battery using the motor when the temperature of the battery is equal to or less than a first threshold temperature.

3. The battery charging apparatus of electric vehicle according to claim 1, wherein the controller is configured to charge the battery when a discharging time of the battery exceeds a threshold time.

4. The battery charging apparatus of electric vehicle according to claim 1, wherein the controller is configured to charge the battery when the discharging of the battery is completed.

5. A battery charging method of electric vehicle, comprising:

confirming, by a controller, a temperature of a battery mounted within a vehicle using a temperature sensor;

discharging, by the controller, the battery using any one of a low voltage converter and a motor based on the temperature;

discharging, by the controller, of the battery using the low voltage converter when the temperature of the battery ranges from a first threshold temperature to a second threshold temperature; and

charging, by the controller, the battery.

6. The battery charging method of electric vehicle according to claim 5, wherein the discharging of the battery includes:

discharging, by the controller, of the battery using the motor when the temperature of the battery is equal to or less than a first threshold temperature.

7. The battery charging method of electric vehicle according to claim 5, wherein the charging of the battery includes:

confirming, by the controller, a discharging time of the battery and charging of the battery when the discharging time of the battery exceeds a threshold time.

8. The battery charging method of electric vehicle according to claim 5, wherein the charging of the battery includes:

confirming, by the controller, a discharging completion of the battery and charging of the battery when the discharging completion of the battery is confirmed.