Alternator Voltage Control for 12V ABS in 24V Vehicle Systems
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Solution Overview
Problem
Existing systems face challenges in applying a 12 volt Anti-lock Braking System (ABS) to vehicles equipped with 24 volt electrical or electronic parts, requiring the replacement of components and additional circuitry, which complicates installation and increases weight.
Innovation Solution
A method and system that divide 24 volt power from an alternator into 12 volt power for an ABS, using a distribution control unit to compare and balance the voltage between two battery units, eliminating the need for an auxiliary battery and allowing the 12 volt ABS to function with 24 volt systems by charging and balancing the batteries accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a 12 volt ABS is applied to a vehicle using 24 volt electrical or electronic parts, then the ABS can function with appropriate voltage, but additional DC/DC converter and auxiliary battery are required which increase weight and installation complexity
Solution Approach 1:
The patent merges the DC/DC converter function with the existing alternator by controlling the alternator to output 12V power directly when 12V ABS is detected, eliminating the need for a separate DC/DC converter and auxiliary battery while maintaining proper voltage supply to the ABS system
Solution Approach 2:
The alternator is designed to perform multiple functions: it can output 24V power for normal 24V vehicle operations and switch to 12V power when a 12V ABS is detected, making the existing 24V electrical system universally compatible with both 24V and 12V ABS configurations without additional components
2Reliability
If a DC/DC converter and auxiliary battery are added to convert 24V to 12V for ABS, then the ABS can operate with correct voltage, but the weight of the vehicle increases
Solution Approach 1:
The patent combines the voltage conversion function into the existing alternator control system, eliminating the need for separate DC/DC converter and auxiliary battery components, thereby preventing any increase in vehicle weight while maintaining proper voltage supply to the 12V ABS
3Device complexity
If 24 volt power is directly supplied to 12 volt ABS, then the system is simpler, but the ABS will be damaged due to excessive voltage
Solution Approach 1:
The patent implements a feedback mechanism where the ECU detects the presence of a 12V ABS through voltage level detection, and based on this feedback, automatically adjusts the alternator output voltage to 12V, preventing overvoltage damage while maintaining system simplicity without additional conversion components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the application of a 12 volt ABS to vehicles with 24 volt components without additional batteries, doubling the battery lifespan and reducing development costs by eliminating the need for specialized 12 volt parts, while improving product durability through voltage balancing.
Implementation Method 1
an alternator for receiving driving force from an engine and generating Alternating Current (AC) power
Implementation Method 2
a first battery unit electrically connected to the distribution control unit and configured to supply 12 volt power to the ABS actuation unit
Implementation Method 3
a distribution control unit receiving 24 volt power from the alternator
Data Source
AI summary
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.