Battery Tester Dynamic Load Resistance Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery testers use a fixed resistance and duration for discharging, leading to inaccurate results when testing rechargeable batteries of different capacities, as they rely solely on the 1/2Cold Cranking Amps (CCA) method, which is not precise for varying battery capacities.
Innovation Solution
A battery tester with a microprocessor that calculates and adjusts the load resistance based on the battery's CCA, voltage, and detection requirements, using a variable loading unit to obtain accurate detecting waveforms for determining battery health.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed resistance load is used for battery testing, then the testing method is simple and easy to implement, but the testing precision is insufficient for batteries with different capacities
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed resistance load with a variable loading unit that can dynamically adjust its resistance value. The microprocessor calculates the optimal resistance based on the battery's CCA and voltage, then adjusts the loading unit's resistance in real-time during the testing process. This dynamic adjustment enables precise testing for batteries of different capacities while maintaining automated control, thus resolving the contradiction between testing simplicity and measurement precision.
Solution Approach 2:
The patent implements parameter changes by modifying the resistance value of the loading unit based on calculated parameters (battery CCA, voltage, and detection requirements). The microprocessor computes the appropriate resistance parameter and adjusts the loading unit accordingly, allowing the testing system to adapt to different battery specifications. This parameter-based adjustment achieves high precision testing across various battery types without compromising operational simplicity.
2Measurement precision
If the load resistance is adjusted according to battery capacity, then the testing precision is improved, but the device complexity increases
Solution Approach 1:
The patent applies the self-service principle by enabling the testing system to automatically calculate and adjust the load resistance without external intervention. The microprocessor autonomously computes the optimal resistance based on detected battery parameters (CCA and voltage) and controls the variable loading unit accordingly. This self-adjusting mechanism eliminates the need for manual calibration or complex external control systems, achieving high precision testing while maintaining operational simplicity.
Solution Approach 2:
The patent implements feedback by using the microprocessor to continuously monitor battery voltage and CCA, then using this information to adjust the loading unit's resistance. The system detects battery parameters, calculates the appropriate load based on feedback from these measurements, and dynamically adjusts the loading accordingly. This closed-loop feedback mechanism ensures accurate testing for different battery capacities without requiring complex pre-programmed settings or manual adjustments.
3Ease of operation
If a fixed duration load is applied, then the testing process is straightforward, but the discharging diagram figures are not precise for varying battery capacities
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed-duration load application to a dynamic testing process where the microprocessor monitors battery voltage in real-time and adjusts the testing parameters accordingly. The system maintains a straightforward automated operation while dynamically adapting the load characteristics based on actual battery performance, ensuring precise discharging diagram figures for batteries of varying capacities without complicating the user interface or操作流程.
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 provides high precision in detecting battery status by dynamically adjusting the load resistance, ensuring accurate results for batteries with different capacities, thereby improving the testing precision compared to conventional methods.
Implementation Method 1
the microprocessor adjusts a resistance of the variable loading unit in accordance with the calculated loading resistance
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention discloses a battery tester having high precision, which has a casing 10 having an input device 11 and two detecting wires 12, a microprocessor 20, a variable loading unit 21 and a battery power status detecting unit 22. The microprocessor 20 builds a strategic decision process therein to determine a proper resistance of a load for a battery according to the battery capacity, initial voltage and detection requirements having 1/N CCA and loading time. When the resistance of the load is determined, the microprocessor 20 adjusts a resistance of the variable loading unit 21 equal to the resistance of the load for the battery 30. Therefore, the battery tester does not use the load with the fixed resistance to detect batteries 30 with different capacities and has accurate detecting results.