Redundant Backup Power Supply for Mixed-Voltage Loads
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Solution Overview
Problem
Existing redundant power supply systems require separate power supplies for loads with different input voltages, leading to increased mounting space and cost, and can output wrong diagnoses due to varying voltage values.
Innovation Solution
A redundant power supply system that integrates backup power to multiple loads with different input voltage requirements by using a single redundant power supply, which detects main power supply failures and adjusts output voltage to meet the needs of each load, preventing erroneous diagnoses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate redundant power supplies are provided for each load with different input voltages, then each load receives appropriate backup power, but the mounting space and system cost increase
Solution Approach 1:
The patent merges multiple redundant power supplies into a single unified redundant power supply unit. This single unit provides backup power to multiple loads with different voltage requirements (e.g., 12V and 24V loads) by internally generating appropriate voltages, thereby reducing the total mounting space and component count while maintaining reliability.
Solution Approach 2:
The single redundant power supply is designed with multi-functionality to serve multiple loads with different voltage requirements. It can simultaneously provide backup power to both 12V and 24V loads by incorporating voltage conversion capabilities, making one power supply unit perform the function of what would traditionally require multiple separate units.
2Area of stationary object
If a single redundant power supply serves multiple loads with different input voltages, then mounting space and cost are reduced, but wrong diagnosis results may occur due to voltage mismatches
Solution Approach 1:
The patent implements local quality by providing different voltage levels to different loads from the same redundant power supply. The system detects which load requires power backup and outputs the appropriate voltage (12V or 24V) to that specific load, ensuring each load receives its required voltage while preventing diagnosis errors through proper voltage matching.
Solution Approach 2:
The redundant power supply dynamically adjusts its output voltage based on which load requires backup power. When a 12V load needs backup, it outputs 12V; when a 24V load needs backup, it outputs 24V. This dynamic voltage adjustment prevents wrong diagnosis results by ensuring the backup voltage matches the load's requirements.
3Reliability
If backup power is supplied at a voltage satisfying one load's requirements, then that load operates correctly, but other loads with different voltage requirements may receive incorrect voltage
Solution Approach 1:
The patent changes the output voltage parameter of the redundant power supply based on the specific load requirements. The system monitors the state of connected loads and adjusts the output voltage parameter accordingly - outputting 12V when 12V loads need backup, and 24V when 24V loads need backup, thereby maintaining both reliability and voltage compatibility.
Data Source
AI summary
A redundant power supply system comprising: a first load requesting power less than a first voltage; a second load requesting power less than or equal to a second voltage than the first voltage; and a redundant power supply supplying backup power to the first load and the second load when the main power supply fails, wherein the redundant power supply notifies the first load of a failure of the main power supply when the main power supply fails, and supplies backup power at an output voltage satisfying the request of the second load, and wherein the first load does not output an erroneous diagnosis when an input voltage from the redundant power supply is less than the first voltage or when a failure of the main power supply is notified from the redundant power supply.