Logical Battery Composite Substrate Integration
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Solution Overview
Problem
The reduction in thickness of batteries leads to a corresponding decrease in capacity, making it challenging to meet the increased performance requirements of thinner electronic devices without increasing the inner space, as the electrode length decreases, affecting the battery's capacity and safety specifications.
Innovation Solution
A logical battery design that integrates electronic modules and a current collecting layer into a composite substrate, eliminating the need for external connections and forming a sealed space with an electro-chemical layer, which includes active material layers and an isolation layer, to reduce the overall thickness while maintaining capacity and enhancing safety by isolating the electro-chemical system from the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of the battery is reduced, then the device can be thinner, but the capacity of the battery is reduced
Solution Approach 1:
The patent merges the battery structure with the circuit board by integrating the current collecting layer directly onto the circuit board substrate. This eliminates the need for separate battery and circuit board components, allowing the battery capacity to be maintained through effective use of the circuit board area while achieving reduced overall device thickness.
Solution Approach 2:
The patent transitions from a traditional three-dimensional battery structure to a two-dimensional planar structure by forming the electrochemical layer and current collecting layer on the circuit board surface. This dimensional change allows the battery to maintain capacity through increased surface area utilization while reducing thickness in the vertical dimension.
2Length of stationary object
If the thickness of the battery is reduced, then the device can be thinner, but the safety of the battery is compromised
Solution Approach 1:
The patent employs thin film structures for the electrochemical layer, isolation layer, and current collecting layer that provide adequate safety protection while maintaining reduced thickness. These thin films are designed with appropriate material properties and thicknesses to ensure battery safety without adding excessive thickness.
Solution Approach 2:
The patent implements a nested structure where the electrochemical layer is positioned between the first and second current collecting layers, which are both integrated with the circuit board. This nested arrangement provides multiple protective layers and structural support that enhance battery safety while maintaining a compact, thin profile.
3Reliability
If external connection parts are used to connect the electro-chemical layer, then the electrical connection can be established, but the processing and circuit design become complex
Solution Approach 1:
The patent combines the current collecting layer with the circuit board, eliminating the need for separate external connection parts. The current collecting layer is directly formed on the circuit board and serves both as the battery electrode and as the electrical connection interface, thereby simplifying processing and circuit design while ensuring reliable electrical connection.
4Ease of operation
If the electro-chemical system is exposed to the outside environment, then the battery can operate, but water and gas can affect the battery performance
Solution Approach 1:
The patent uses the circuit board as a protective barrier that shields the electrochemical system from the outside environment. The circuit board substrate and encapsulation structures prevent water and gas from reaching the electrochemical layer, allowing the battery to operate reliably without direct exposure to harmful environmental factors.
Data Source
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AI summary
A logical battery is disclosed in the present invention. The logical battery includes a composite substrate, a second current collecting layer, a sealing frame and an electro-chemical layer. The composite substrate includes a first current collecting layer and a layout layer. The sealing frame is disposed between the first and second current collecting layers. At least part of the sealing frame is overlapping with the first and second current collecting layers orthographically. A sealed space is formed via the sealing frame, the first current colleting layer and the second current collecting layer for placing the electro-chemical layer. A battery unit is formed via the first current collecting layer, the second current collecting layer, the sealing frame and the electro-chemical layer.