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 there are no weight variations, necessitating a new approach to differentiate between genuine and non-genuine products.
Innovation Solution
A method involving adjusting a battery's state of charge (SOC) or voltage through charge and discharge cycles to measure resistance values, allowing for the determination of a battery's authenticity based on these measurements without relying on weight.
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 there is no weight difference
Solution Approach 1:
The patent changes the determination parameter from weight to resistance value. By measuring the resistance value of the battery at different states of charge (SOC) or voltages, the system can identify non-genuine batteries even when weight differences are absent. This parameter transformation resolves the contradiction by providing a new measurement basis that works regardless of weight similarity.
2Measurement precision
If multiple charge and discharge cycles are performed, then resistance measurement accuracy improves, but determination time increases
Solution Approach 1:
The patent performs preliminary charge or discharge to bring the battery to a predetermined state (specific SOC or voltage range) before measuring the resistance value. This preliminary action ensures that the battery is in the optimal state for accurate resistance measurement, eliminating the need for multiple trial cycles and thus reducing determination time while maintaining measurement precision.
Solution Approach 2:
The system measures the resistance value at specific states of charge or voltage, compares it with predetermined thresholds or reference values, and uses this feedback to determine authenticity. This feedback mechanism allows for accurate determination without requiring multiple arbitrary charge-discharge cycles, as the measurement is taken at the precise moment when the battery reaches the predetermined state.
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 by analyzing resistance changes during specific charge and discharge cycles, effectively distinguishing them from genuine products regardless of weight differences.
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
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.