Fluorescent Coating for Battery Leakage Detection
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Solution Overview
Problem
It is challenging to quickly and accurately detect electrolyte solution leakage from rechargeable batteries, which can occur due to internal abnormalities, making it difficult for users to identify and address potential issues before additional damage is caused.
Innovation Solution
A rechargeable battery design that incorporates a fluorescent coating between the case and cap plate, with specific coatings on the inner wall surface and lateral edges, allowing for easy visual detection of electrolyte solution leakage through the dissolution of fluorescent materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fluorescent coating is applied to detect electrolyte solution leakage, then the detection capability is improved, but the device complexity increases
Solution Approach 1:
The patent applies a fluorescent coating that changes color or emits light when it comes into contact with electrolyte solution, enabling visual detection of leakage. This directly addresses the detection capability improvement while maintaining simplicity by using a passive optical indicator rather than active sensors or complex detection systems.
Solution Approach 2:
The fluorescent coating acts as an intermediary substance between the electrolyte solution and the user's observation. It mediates the detection process by transforming the invisible leakage into a visible fluorescent signal, thereby improving detection capability without requiring direct complex measurement equipment.
2Reliability
If multiple coating layers are applied for comprehensive coverage, then the detection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent divides the fluorescent coating into multiple separate coating layers applied to different surfaces (inner wall surface, lateral surface, tapered surface). This segmentation allows each layer to be applied independently to specific areas, improving detection reliability through comprehensive coverage while simplifying the manufacturing process compared to applying a single complex coating system.
Solution Approach 2:
Different regions of the battery structure receive fluorescent coating treatment based on their specific functions and leakage risk profiles. The inner wall surface, lateral surface, and tapered surface each receive coating appropriate to their local requirements, optimizing detection reliability for each area while avoiding unnecessary coating elsewhere, thus balancing reliability with manufacturing ease.
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 quick and accurate visualization of electrolyte solution leakage, facilitating timely intervention and preventing further damage to the battery.
Implementation Method 1
a fluorescent coating between the cap plate and the opening of the case
Implementation Method 2
allowing for easy visual detection of electrolyte solution leakage through the dissolution of fluorescent materials
Data Source
AI summary
A rechargeable battery including an electrode assembly including a first electrode and a second electrode; electrode terminals electrically coupled to the electrode assembly; a case in which the electrode assembly is placed; a cap plate in an opening of the case to seal the case, the cap plate including a vent hole; and a fluorescent coating between the cap plate and the opening of the case.