Battery Separator Insulation Inspection Using Pressed Metal Electrodes
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Solution Overview
Problem
Existing technologies lack a reliable method for inspecting the insulation of secondary battery separators in real-time, which is crucial for ensuring the safety and performance of secondary batteries used in devices like smartphones and electric vehicles.
Innovation Solution
An apparatus is developed comprising upper and lower metallic members with fixed shafts and a source meter to apply voltage and measure resistance, allowing for real-time inspection of separator insulation by pressing the members together and measuring electrical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time inspection of separator insulation is implemented, then battery safety and reliability are enhanced, but device complexity increases due to the need for additional metallic members, shafts, and electrical measurement systems
Solution Approach 1:
The inspection apparatus is divided into distinct functional modules: upper and lower metallic members for contact, fixed shafts for rotational support, and a source meter for electrical measurement. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability for real-time separator insulation inspection.
2Measurement precision
If voltage and current are applied between metallic members to measure resistance, then insulation defects are detected with high precision, but energy consumption increases due to continuous electrical measurement
Solution Approach 1:
The source meter continuously applies voltage and measures current between the upper and lower metallic members as the separator passes through, enabling real-time detection of insulation defects. This continuous measurement ensures high precision in identifying defects like pinholes or debris while maintaining efficient operation through automated sequential inspection.
3Measurement precision
If upper and lower metallic members are pressed together to inspect separator insulation, then measurement accuracy is improved, but force required increases causing potential damage to the separator
Solution Approach 1:
The metallic members are designed to apply localized pressure only at the contact points where the separator passes through, rather than distributing force across the entire separator surface. This localized pressing ensures accurate insulation measurement at the measurement zone while minimizing damage to the separator structure.
4Productivity
If fixed shafts with ball bearings are used to support metallic members, then rotational movement is facilitated improving inspection efficiency, but manufacturing complexity increases
Solution Approach 1:
Metal ball bearings are introduced as intermediary elements between the fixed shafts and the metallic members, enabling smooth rotational movement of the metallic members as the separator passes through. This intermediary component facilitates continuous inspection efficiency while using standardized off-the-shelf bearing parts that simplify the overall manufacturing process.
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 apparatus enables real-time inspection of separator insulation, detecting defects such as debris or pinholes, thereby enhancing the safety and reliability of secondary batteries.
Implementation Method 1
a source meter electrically connected to the upper metallic member and to the lower metallic member, and configured to apply a voltage and/or current between the upper metallic member and the lower metallic member, and to measure resistance and/or current between the upper metallic member and the lower metallic member corresponding to the insulation of the separator
Data Source
AI summary
Disclosed is an apparatus for inspecting the insulation of a separator for batteries capable of inspecting the insulation of a separator in real time by applying current or voltage after pressing an upper metallic member and a lower metallic member toward each other. The apparatus includes an upper metallic member, a lower metallic member under the upper metallic member, and configured to press the separator with the upper metallic member, and a source meter electrically connected to the upper metallic member and to the lower metallic member, and configured to apply a voltage and/or current between the upper metallic member and the lower metallic member, and to measure resistance and/or current between the upper metallic member and the lower metallic member corresponding to the insulation of the separator.