Voltage Equalizing Device with LED Diagnosis
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Solution Overview
Problem
High voltage battery systems for electric vehicles and similar devices face performance issues due to non-uniform charge and voltage among battery modules, leading to overall system deterioration.
Innovation Solution
A portable voltage equalizing device with a battery module diagnosis function, including junction terminals, an equalizer circuit, comparators, indicators, and a fuse, which performs voltage equalization and diagnoses over-discharge states using light emitting diodes and voltage dividers, allowing for cost-effective realization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional voltage equalization methods are used, then voltage differences between battery modules can be reduced, but the system complexity and cost increase due to lack of integrated diagnosis functionality
Solution Approach 1:
The patent combines voltage equalization functionality with battery module diagnosis functionality into a single integrated device. The equalizer circuit performs voltage equalization while comparators and indicators simultaneously diagnose battery module states, eliminating the need for separate diagnosis equipment and reducing overall system complexity.
Solution Approach 2:
The voltage equalizing device is designed to perform multiple functions: voltage equalization across battery modules and simultaneous diagnosis of battery module states (charged, discharged, over-discharged). This multi-functionality allows a single device to replace multiple separate systems, reducing complexity while maintaining reliability.
2Reliability
If comprehensive battery monitoring is implemented, then battery performance and safety improve, but the cost of the system increases
Solution Approach 1:
The battery system performs self-diagnosis through the integrated comparators and indicators that automatically detect and display the state of each battery module. This self-service capability eliminates the need for external diagnosis equipment or complex monitoring systems, reducing manufacturing costs while maintaining high diagnosis accuracy.
Solution Approach 2:
The patent uses simple, low-cost components such as comparators, light emitting diodes, and resistors for battery diagnosis instead of expensive sophisticated monitoring systems. These simple components provide adequate diagnosis functionality at a fraction of the cost of complex electronic monitoring systems.
3Ease of manufacture
If simple indicator systems are used, then device cost is reduced, but the ability to provide accurate battery state information decreases
Solution Approach 1:
The patent divides the battery system into individual module segments, with each module monitored by its own comparator and indicator. This segmentation allows simple indicators to provide accurate information about each specific battery module's state (charged, discharged, over-discharged), preventing information loss while keeping individual component costs low.
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 device effectively equalizes voltages between battery modules, diagnoses over-discharge states, and ensures normal operation, reducing costs and system complexity while improving battery performance.
Implementation Method 1
a first indicator having a first displaying state that changes according to a voltage difference between the first and second junction terminals
Data Source
AI summary
A voltage equalizer includes: first, second, and third junction terminals respectively connected to a positive electrode of a first battery module, a positive electrode of a second battery module, and negative electrodes of the first and second battery modules; an equalizer circuit connected between the first and second junction terminals, and the equalizer forming a current path between the first and second junction terminals; a first indicator having a first displaying state that changes according to a voltage difference between the first and second junction terminals; a first comparator for outputting a first output voltage according to an input voltage that is input in proportion to a voltage between the first and third junction terminals; and a second indicator having a second displaying state that changes according to the first output voltage of the first comparator.