System and method for supplying power to ABS for vehicle

• US 8,170,766 B2
• Filed: 04/08/2008
• Issued: 05/01/2012
• 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
• Primary Examiner(s): Algahaim, Helal A
• Application Number:
  US12/082,200
• Publication Number:
  US 20090118959A1
• Time in Patent Office: 1,484 Days
• Field of Search: 701/70, 701/71, 320/116, 320/137
• 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:

receiving, by the distribution control unit, 24V from an alternator electrically connected to the distribution control unit;

determining whether an ignition key has been turned on by the distribution control unit;

in response to determining that the ignition key has been turned on, comparing, by the distribution control unit, voltage of a first battery unit, configured to apply 12 volt power to an ABS actuation unit, with voltage of a second battery unit, connected to the first battery unit;

determining, by the distribution control unit, whether the ABS actuation unit is operating when the voltage of the first battery unit is lower than the voltage of the second battery unit; and

charging the first battery unit with power from the distribution control unit when the ABS actuation unit is operating, and balancing the voltage of the first battery unit and the voltage of the second battery unit when 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 when the voltage of the first battery unit is equal to or greater 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 configured to actuate the ABS;

an alternator configured to receive driving force from an engine and generate Alternating Current (AC) power;

a distribution control unit electrically connected with the alternator and configured to receive 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;

a second battery unit electrically connected to the first battery unit so that voltage of the second battery unit is balanced with voltage of the first battery unit, and wherein the distribution control unit compares the voltage of the first battery unit with the voltage of the second battery unit when an ignition key has been turned on, determines whether the ABS actuation unit is operating when the voltage of the first battery unit is lower than the voltage of the second battery unit, charges the first battery unit with power when the ABS actuation unit is operating, and balances the voltage of the first battery unit and the voltage of the second battery unit when the ABS actuation unit is not operating.

4. A circuit, comprising:

an ABS actuation unit configured to actuate the ABS;

an alternator configured to receive a driving force from an engine and generate Alternating Current (AC) power;

a distribution control unit electrically connected in parallel with the alternator and configured to receive 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 is balanced with voltage of the first battery unit

wherein the distribution control unit is further configured to compare the voltage of the first battery unit with the voltage of the second battery unit in response to a determination that an ignition key has been turned on, determine whether the ABS actuation unit is operating when the voltage of the first battery unit is lower than the voltage of the second battery unit, and charge the first battery unit with power from the distribution control unit when the ABS actuation unit is operating, and balance the voltage of the first battery unit and the voltage of the second battery unit when the ABS actuation unit is not operating.