Battery Authenticity Check Using SOC-Dependent Resistance
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Solution Overview
Problem
Existing methods for determining non-genuine batteries rely on weight differences, which are not effective when no weight difference exists, necessitating a new approach to differentiate between genuine and non-genuine products.
Innovation Solution
A method involving specifying a battery's state of charge (SOC) or voltage, adjusting it through charge and discharge cycles, measuring resistance values at different states, and determining authenticity based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weight-based determination method is used, then genuine products can be identified when weight differences exist, but non-genuine products cannot be determined when no weight difference exists
Solution Approach 1:
The patent changes the determination parameter from weight to resistance value. By measuring the resistance value of the battery and comparing it with reference values, the system can identify non-genuine products regardless of weight similarities. This parameter transformation resolves the contradiction by providing a different physical property for differentiation that remains effective even when weight-based methods fail.
2Measurement precision
If multiple charge and discharge adjustments are performed, then resistance measurement accuracy improves, but determination time increases
Solution Approach 1:
The patent performs preliminary charge and discharge adjustments to bring the battery to a standardized state before resistance measurement. By pre-adjusting the battery state through controlled charge/discharge cycles, the measurement conditions are optimized in advance, ensuring accurate resistance readings while minimizing the total time required during actual determination operations.
Solution Approach 2:
The patent employs periodic charge and discharge cycles to adjust the battery state before measurement. By using regular, standardized charge/discharge periods, the system achieves consistent measurement conditions that improve accuracy. The periodic nature of these adjustments creates a reliable pattern that balances measurement precision with time efficiency.
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
Enables the identification of non-genuine batteries independent of weight, by analyzing resistance changes during controlled charge and discharge cycles, effectively distinguishing between genuine and non-genuine products.
Implementation Method 1
adjusting a state of the battery to a state Y by performing at least one of charge and discharge to the battery
Implementation Method 2
measuring a resistance value of the battery in the state Y adjusted in the first adjusting step, the resistance value regarded as a first resistance value
Data Source
Figure 1~2B
Figure 3A~5B
Figure 6A~7
AI summary
A main object of the present disclosure is to provide a determination method of a battery capable of determining a non-genuine product not basing on the weight of the battery. Provided to achieve the object is a determination method of a battery for determining whether a battery is genuine or not, the method including: a specifying step of specifying, as a state of the battery, a state X defined by a state of charge (SOC) or a voltage; a first adjusting step of adjusting a state of the battery to a state Y by performing at least one of charge and discharge to the battery in the state X; a first measuring step of measuring a resistance value of the battery in the state Y adjusted in the first adjusting step, the resistance value regarded as a first resistance value; a second adjusting step of adjusting a state of the battery to the state Y again by performing charge and discharge to the battery after the first measuring step, the charge and the discharge correspond to below (i) or (ii): (i) when the battery is adjusted to the state Y from a high SOC side or a high voltage side in the first adjusting step, the charge and the discharge are performed in the order of discharge and charge so as to adjust the state to the state Y again from a low SOC side or a low voltage side; (ii) when the battery is adjusted to the state Y from a low SOC side or a low voltage side in the first adjusting step, the charge and the discharge are performed in the order of charge and discharge so as to adjust the state to the state Y again from a high SOC side or a high voltage side; a second measuring step of measuring a resistance value of the battery in the state Y adjusted in the second adjusting step the resistance value regarded as a second resistance value; and a determining step of determining whether the battery is genuine or not based on the first resistance value and the second resistance value.