UPS Voltage-Balancing State Detection for Battery Health Monitoring
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Solution Overview
Problem
Conventional UPS systems do not effectively monitor the state of health of lead-acid and lithium batteries, leading to unknown operational performance and inadequate timing for battery replacement, despite providing accurate energy-level state displays.
Innovation Solution
A UPS system with voltage-balancing state detection, incorporating an AC power input port, battery charging unit, DC to AC converter, two-way switch, processor, display unit, voltage measurement module, and voltage control module, which generates a voltage index value to assess battery health and prompts users for replacement when the batteries fail to restore a healthy voltage-balancing state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional UPS systems provide accurate energy-level state display, then the display precision is improved, but the state of health monitoring capability deteriorates
Solution Approach 1:
The patent introduces a voltage-balancing state detection module as an intermediary component that specifically monitors battery voltage balancing during charging. This separate monitoring mechanism complements the existing energy-level display by providing dedicated state-of-health assessment, thereby resolving the contradiction between display accuracy and health monitoring capability
Solution Approach 2:
The patent segments the battery monitoring function into two distinct parts: energy-level state display (existing function) and voltage-balancing state detection (new function). By dividing the monitoring task into separate modules with different detection focuses, the system can simultaneously provide accurate energy-level display and reliable state-of-health monitoring without interfering with each other
2Device complexity
If conventional systems display energy-level states without voltage-balancing detection, then the device complexity is reduced, but the operational reliability deteriorates
Solution Approach 1:
The voltage-balancing detection module operates autonomously during the charging process, automatically detecting voltage differences between battery cells and identifying unbalanced states without requiring complex external intervention. This self-service approach maintains system simplicity while enhancing reliability
Solution Approach 2:
The system implements feedback by detecting voltage-balancing states during charging and providing information about battery health status. This feedback mechanism enables the system to monitor battery conditions and alert users when replacement is needed, improving operational reliability without significantly increasing complexity
3Ease of operation
If battery health monitoring is not implemented, then the ease of operation is improved, but the loss of information about battery performance increases
Solution Approach 1:
The patent uses color-coded LED indicators to represent different voltage-balancing states (e.g., green for healthy, yellow for degrading, red for replacement needed). This visual information presentation maintains ease of operation by providing intuitive feedback while preventing information loss about battery performance through clear, easily interpretable color signals
Data Source
AI summary
A UPS with voltage-balancing state detection of batteries includes a processor, a voltage measurement module, a voltage control module, a battery pack and a display unit. Each of the voltage measurement module and the voltage control module is connected to the processor and the battery pack. The processor is connected to the display unit, generates a voltage index value according to voltage values measured by the voltage measurement module and a voltage-balancing state according to the voltage index value and a set of index ranges, controls charging to the battery pack according to the voltage values through the voltage control module, acquires an updated voltage-balancing state of the battery pack, and instructs the display unit to display the voltage-balancing state to prompt users for battery replacement when the voltage-balancing state and the updated voltage-balancing state acquired within a state-holding time are identical.