Separator Authentication via Inorganic Particle Spectral Patterns
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Solution Overview
Problem
Existing methods for authenticating electrochemical devices, such as batteries, often require additional space for identification components, leading to reduced capacity and increased costs, and are not effective against counterfeits.
Innovation Solution
Incorporating inorganic particles with unique spectrum or color patterns into the separator, allowing for identification of the separator and electrochemical device without additional space, using specific peak positions and intensities or color patterns determined by the number, kind, and arrangement of particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a semiconductor is incorporated into the electrochemical device for authentication, then the authenticity can be checked, but the space for receiving electrodes becomes smaller and capacity drops
Solution Approach 1:
The patent combines the authentication function with the existing separator component by incorporating inorganic particles into the separator. This merging eliminates the need for separate authentication components that would occupy additional space, thereby maintaining battery capacity while achieving authenticity verification.
Solution Approach 2:
The separator is given dual functionality: it performs its primary function of preventing electrode contact while simultaneously serving as an authentication medium through the incorporated inorganic particles. This multi-functionality eliminates the need for dedicated authentication components that would reduce battery capacity.
2Reliability
If a semiconductor is incorporated into the electrochemical device for authentication, then the authenticity can be checked, but productivity and cost-efficiency degrade
Solution Approach 1:
The authentication function is merged into the separator manufacturing process itself. The inorganic particles are incorporated during separator production, eliminating the need for separate authentication component installation steps, thereby maintaining manufacturing efficiency and cost-effectiveness.
3Reliability
If inorganic particles are introduced into the separator for identification, then the separator becomes identifiable without additional space, but the separator structure becomes more complex
Solution Approach 1:
The inorganic particles are introduced at specific local positions within the separator structure rather than uniformly throughout. This localized introduction provides identification capability while minimizing the overall structural complexity and maintaining the separator's primary functions.
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 authentic identification of the separator and electrochemical device without reducing capacity, effectively distinguishing genuine from counterfeit products by observing the unique spectrum or color patterns, thereby preventing misuse during manufacturing.
Implementation Method 1
inorganic particle(s) having a unique spectrum or color pattern is(are) introduced into the separator according to a predetermined rule
Implementation Method 2
Each kind of inorganic particle has its unique spectrum or color pattern
Data Source
Figure 1(a)~1(f)
Figure 2(a)~3
Figure 4(a)~4(b)
AI summary
Disclosed is a separator comprising inorganic particle or aggregates thereof having a unique spectrum or color pattern according to a predetermined rule. Also, disclosed are an electrochemical device comprising the above separator and a method for identifying the origin or kind of the separator itself or the electrochemical device comprising the same by using the above separator. Further, disclosed is a method for manufacturing the aforementioned separator, the method comprising a step of forming a specific pattern by coating inorganic particles having a unique spectrum or color pattern on at least one area selected from the group consisting of a surface of a porous substrate and a porous part of the substrate.