System and method for charging battery pack

• US 8,952,652 B2
• Filed: 11/13/2012
• Issued: 02/10/2015
• Est. Priority Date: 06/08/2010
• Status: Active Grant

• Current Assignee: LG Energy Solution Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Kim, Do-Youn, Park, Su-Min, Lee, Ji-Eun
• Primary Examiner(s): Tso, Edward
• Assistant Examiner(s): Grant, Robert
• Application Number:
  US13/675,491
• Publication Number:
  US 20130063088A1
• Time in Patent Office: 819 Days
• Field of Search: 320/104
• US Class Current: 320/104
• CPC Class Codes: B60L 1/006 to power outlets
• 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: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H02J 7/14 for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

Disclosed are a system and method for charging a battery pack. The system uses a recovery vehicle to quickly charge a vehicle battery pack. The system includes a charging power supply module equipped in the recovery vehicle, quick charging power lines placed in the vehicle battery pack, a quick charge switch placed in the quick charging power lines, and a control module.

Claims

1. A system for quickly charging a vehicle battery pack using a recovery vehicle, the system comprising:

a charging power supply module equipped in the recovery vehicle to supply quick charging power to the vehicle battery pack;

quick charging power lines placed in the vehicle battery pack, separately from a charging/discharging path of the vehicle battery pack, to provide charging paths through which the charging power supplied from the charging power supply module is provided to battery cells of the vehicle battery pack;

a quick charge switch placed in the quick charging power lines to selectively open or close the charging paths; and

a control module adapted to;

sense the connection of the charging power supply module to the quick charging power lines,

turn off a charge control switch and a discharge control switch placed in the charging/discharging path of the vehicle battery pack, and

turn on the quick charge switch when the connection of the charging power supply module to the quick charging power lines is sensed, so that the charging power is provided to the battery cells,

wherein the charging power supply module is configured to receive information on a kind of the vehicle battery pack from the vehicle battery pack or a vehicle equipped with the vehicle battery pack when the charging power supply module is connected to the quick charging power lines, and automatically adjust the amount of the charging power depending on the kind of the vehicle battery pack.

2. The system according to claim 1, wherein the charging power supply module monitors the charging state of the vehicle battery pack.

3. The system according to claim 2, wherein when an abnormal situation is sensed in the charging state, the charging power supply module transmits a block signal to turn off the quick charge switch to the control module.

4. The system according to claim 1, wherein the charging power supply module receives power from an electric generator equipped in the recovery vehicle or an external power source.

5. The system according to claim 1, wherein the control module is realized by a battery manage system (BMS) equipped in the vehicle battery pack.

6. A method for quickly charging a vehicle battery pack using a recovery vehicle, the method comprising:

(S1) mounting a charging power supply module in the recovery vehicle to supply quick charging power to the vehicle battery pack;

(S2) placing quick charging power lines in the vehicle battery pack, separately from a charging/discharging path of the vehicle battery pack, to provide charging paths through which the charging power supplied from the charging power supply module is provided to battery cells of the vehicle battery pack, and placing a quick charge switch in the quick charging power lines to selectively open or close the charging paths;

(S3) sensing the connection of the charging power supply module to the quick charging power lines;

(S3-1) receiving, by the charging power supply module, information on a kind of the vehicle battery pack from the vehicle battery pack or a vehicle equipped with the vehicle battery pack when the charging power supply module is connected to the quick charging power lines;

(S3-2) automatically adjusting, by the charging power supply module, the amount of the charging power depending on the kind of the vehicle battery pack;

(S4) turning off a charge control switch and a discharge control switch placed in the charging/discharging path of the vehicle battery pack;

(S5) turning on the quick charge switch; and

(S6) supplying the charging power from the charging power supply module to the vehicle battery pack.

7. The method according to claim 6, further comprising monitoring the charging state of the vehicle battery pack by the charging power supply module.

8. The method according to claim 7, further comprising turning off the quick charge switch when an abnormal situation is sensed in the charging state during the monitoring.

9. The method according to claim 6, wherein the charging power supply module receives power from an electric generator equipped in the recovery vehicle or an external power source.