Battery Magnetic Fingerprinting for Authenticity Identification
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Solution Overview
Problem
Existing battery identification methods face challenges in accurately determining the authenticity and type of batteries, particularly due to the variability of electrochemical characteristics over time and the risk of misidentification by non-genuine products.
Innovation Solution
A battery identification system utilizing a sensor with magnetic elements to measure the magnetic field distribution on the outer surface of batteries, comparing this data with reference magnetic field distributions to determine the battery's type, leveraging physical characteristics that remain unchanged since manufacture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrochemical characteristics are used for battery identification, then identification can be performed, but accuracy deteriorates due to variability over time and susceptibility to forgery
Solution Approach 1:
The patent replaces electrochemical characteristic-based identification with magnetic field distribution-based identification. Instead of measuring electrochemical properties that vary over time and can be forged, the system uses magnetic sensors to detect the magnetic field distribution generated by current flow through battery components, providing a stable and difficult-to-fake identification method
Solution Approach 2:
The patent changes the identification parameter from electrochemical characteristics to magnetic field distribution characteristics. By measuring magnetic field strength at multiple positions around the battery and comparing the distribution pattern against reference data, the system achieves accurate and reliable battery type identification that is insensitive to time-dependent variations
2Measurement precision
If magnetic field distribution measurement is used, then identification accuracy improves, but device complexity increases due to multiple magnetic sensors required
Solution Approach 1:
The patent divides the battery identification task into discrete measurement points around the battery perimeter. Magnetic sensors are positioned at specific locations (e.g., four positions around a cylindrical battery) to capture the magnetic field distribution pattern, transforming a complex continuous measurement problem into a manageable set of discrete measurements
Solution Approach 2:
The magnetic sensor system is designed to be universally applicable to different battery types and configurations. The same sensor platform and measurement approach can identify various battery chemistries, form factors, and arrangements by comparing against appropriate reference magnetic field distribution data, reducing the need for type-specific identification hardware
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
This approach significantly improves the accuracy of battery identification by using stable magnetic field distributions to distinguish genuine from non-genuine products, reducing the risk of misidentification and ensuring safety and financial integrity in battery reuse and recycling.
Implementation Method 1
a meter configured to measure, using the plurality of magnetic elements, a magnetic field distribution on an outer surface of a battery
Data Source
AI summary
A battery identification system includes a sensor having a sensing surface and a plurality of magnetic elements arranged in or on the sensing surface, a meter configured to measure, using the plurality of magnetic elements, a magnetic field distribution on an outer surface of a battery with the sensing surface facing the outer surface of the battery, which includes a plurality of battery cells electrically connected to each other, and a computer configured to identify the type of the battery by comparing the magnetic field distribution measured by the meter with a reference magnetic field distribution, 10 with reference to reference data indicating the reference magnetic field distribution, and output information regarding the identified type of the battery, as battery information.