Battery Tester Variable Loading Time Precision
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Solution Overview
Problem
Conventional battery testers provide inaccurate results when testing rechargeable batteries of different capacities due to the use of a fixed load resistance and duration in the ½ CCA testing method, leading to imprecise discharging diagrams.
Innovation Solution
A battery tester with a microprocessor that determines an optimal loading time based on the battery capacity, using a preset load of 1/N of the battery capacity and a preset loading time inputted from an input device, allowing for variable loading times and accurate testing results across different battery capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed load resistance and loading duration are used in the ½ CCA testing method, then the testing process is simple and standardized, but the testing precision for batteries with different capacities deteriorates
Solution Approach 1:
The patent applies dynamics by making the loading time variable rather than fixed. The microprocessor dynamically adjusts the loading duration based on the detected battery capacity, allowing the testing system to adapt to different battery types while maintaining a standardized testing framework. This resolves the contradiction by enabling precision across different capacities without sacrificing process standardization.
Solution Approach 2:
The patent changes the testing parameter (loading time) based on battery capacity. The microprocessor detects battery capacity and automatically adjusts the loading duration parameter to optimize testing accuracy for each battery type. This parameter adaptation allows precise testing across different battery capacities while keeping the overall testing method standardized and simple to implement.
2Ease of operation
If a single testing method (½ CCA) is used for all rechargeable batteries, then the testing procedure is uniform and easy to operate, but the testing accuracy for different battery capacities deteriorates
Solution Approach 1:
The patent implements universality by creating a testing system that can handle multiple battery types through one unified device. The microprocessor enables the single testing apparatus to automatically adapt its parameters for different battery capacities, making the system universally applicable to various rechargeable batteries while maintaining ease of operation through automated parameter adjustment.
Solution Approach 2:
The patent uses feedback by having the microprocessor detect battery capacity first, then use that information to determine the appropriate loading time. This feedback loop allows the system to automatically adjust the testing parameters based on the specific battery being tested, maintaining both operational simplicity and testing accuracy across different battery types.
3Productivity
If loading time is fixed for all batteries, then the testing process is efficient and quick, but the testing reliability for batteries with different capacities deteriorates
Solution Approach 1:
The patent applies preliminary action by having the microprocessor detect battery capacity before conducting the actual load test. This preliminary detection allows the system to pre-determine the appropriate loading time, ensuring reliable testing for each battery type while maintaining efficiency through automated, rapid parameter selection and execution.
Data Source
AI summary
The battery tester has a casing having an input device and two detecting wires, a microprocessor, a loading unit and a battery power status detector. The microprocessor builds a strategic decision process therein to determine a discharge time of a battery according to an output current, a preset load having 1/N CCA (Cold Cranking Amps) and a preset loading time inputted from the input device. Therefore, the battery tester can detect the health of batteries with different capacities and provides accurate detecting results.