Relay Driving Device Voltage Segmentation Power Loss
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Solution Overview
Problem
Conventional power converters experience reduced power conversion efficiency due to the inclusion of relays, which consume power to maintain an activated state, and existing solutions are either costly or time-consuming to implement.
Innovation Solution
A relay driving device comprising first and second power supply modules, a switching circuit, and a control module that outputs a high voltage to activate the relay and a lower voltage to maintain its activated state, reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay is used to suppress inrush current in a power converter, then the inrush current problem is solved, but the power conversion efficiency is reduced due to relay power consumption
Solution Approach 1:
The power supply to the relay is segmented into two distinct modules: a first power supply module that provides high voltage for relay activation, and a second power supply module that provides low voltage for maintaining the activated state. This segmentation allows the relay to receive appropriate voltage at different operational stages, reducing overall power consumption while maintaining reliable inrush current suppression functionality.
2Loss of energy
If better performing electrical components are used to reduce relay power consumption, then power efficiency improves, but cost increases
Solution Approach 1:
The invention changes the voltage parameter supplied to the relay based on its operational state. By providing high voltage during activation and low voltage during maintenance, the system achieves reduced power consumption using standard, cost-effective power supply modules rather than requiring expensive specialized components.
3Loss of energy
If circuitry arrangement is redesigned to reduce relay power consumption, then power efficiency improves, but implementation time increases
Solution Approach 1:
The dual power supply module configuration provides multi-functionality: the first power supply module handles relay activation, the second power supply module maintains the activated state, and together they solve both the inrush current suppression requirement and the power consumption reduction goal. This universal approach can be applied to various power converter designs without requiring custom circuitry redesign.
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
The solution effectively reduces the power consumption of the relay, thereby enhancing the power conversion efficiency of the power converter, as demonstrated by experimental results showing a 0.256 watt reduction in power consumption and a corresponding increase in efficiency.
Implementation Method 1
The first power supply module is for outputting a first voltage that has a magnitude sufficient to activate the relay
Implementation Method 2
The second power supply module is for outputting a second voltage that has a magnitude lower than that of the first voltage and sufficient to maintain an activated state of the relay
Data Source
AI summary
A relay driving device includes first and second power supply modules, a switching circuit, and a control module. The first power supply module outputs a first voltage that has a magnitude sufficient to activate the relay. The second power supply module outputs a second voltage that has a magnitude sufficient to maintain an activated state of the relay. The control module is configured to control the switching circuit to connect the relay to the first power supply module so as to provide the first voltage to the relay for activating the relay, and to subsequently connect the relay to the second power supply module so as to provide the second voltage to the relay for maintaining the activated state of the relay.