System and method for supplying power to ABS for vehicle

• US 20090118959A1
• Filed: 04/08/2008
• Published: 05/07/2009
• Est. Priority Date: 11/07/2007
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Kim, Jong Wan, Oh, Se Min
• Granted Patent: US 8,170,766 B2
• Time in Patent Office: Days
• US Class Current: 701/71
• CPC Class Codes: B60T 8/1708 for lorries or tractor-trailer combinations
• CPC Class Codes: H02J 2310/46 for ICE-powered road vehicles
• 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

Abstract

A system and method for supplying power to an Anti-lock Braking System (ABS) for a vehicle includes: determining whether an ignition key has been turned on; comparing voltage of a first battery unit, configured to apply the power to an ABS actuation unit, with voltage of a second battery unit, connected to the first battery unit, if the ignition key has been turned on; determining whether the ABS actuation unit is operating if the voltage of the first battery unit is lower than the voltage of the second battery unit; and charging the first battery unit with the power if the ABS actuation unit is operating, and balancing the voltage of the first battery unit and the voltage of the second battery unit if the ABS actuation unit is not operating.

Claims

1. A method of dividing 24 volt power of an alternator into 12 volt power and supplying the power to an Anti-lock Braking System (ABS) for a vehicle, the method comprising:

determining whether an ignition key has been turned on;

comparing voltage of a first battery unit, configured to apply the power to an ABS actuation unit, with voltage of a second battery unit, connected to the first battery unit, if the ignition key has been turned on;

determining whether the ABS actuation unit is operating if the voltage of the first battery unit is lower than the voltage of the second battery unit; and

charging the first battery unit with the power if the ABS actuation unit is operating, and balancing the voltage of the first battery unit and the voltage of the second battery unit if the ABS actuation unit is not operating.

2. The method as set forth in claim 1, further comprising, after comparing the voltage of the first battery unit with the voltage of the second battery unit, switching to a standby mode if the voltage of the first battery unit is equal to or higher than the voltage of the second battery unit.

3. A system for supplying power to an ABS for a vehicle, comprising:

an ABS actuation unit for actuating the ABS;

an alternator for receiving driving force from an engine and generating Alternating Current (AC) power,

a distribution control unit for receiving 24 volt power from the alternator;

a first battery unit electrically connected to the distribution control unit and configured to supply 12 volt power to the ABS actuation unit; and

a second battery unit electrically connected to the first battery unit so that voltage of the second battery unit can be balanced with voltage of the first battery unit.

4. The system as set forth in claim 3, wherein the distribution control unit compares a voltage of the first battery unit with a voltage of the second battery unit if an ignition key has been turned on, determines whether the ABS actuation unit is operating if the voltage of the first battery unit is lower than the voltage of the second battery unit, charges the first battery unit with power if the ABS actuation unit is operating, and balances the voltage of the first battery unit and the voltage of the second battery unit if the ABS actuation unit is not operating.