Integrated Circuit Authentication for Secondary Battery Cells
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Solution Overview
Problem
Existing wireless IC tags for secondary battery cells are not securely connected and can be easily detached or attached to other cells, leading to authentication and safety issues in battery packs.
Innovation Solution
Integrating an IC chip within the secondary battery cell that is powered by the cell itself, allowing for secure authentication by stopping power supply upon detachment and storing identification information to prevent unauthorized attachment or detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wireless IC tag is used for authentication, then authentication capability is provided, but the IC tag can be easily detached or attached to other cells
Solution Approach 1:
The patent merges the IC tag with the secondary battery cell by providing the IC tag on the outer surface of the battery cell, integrating these two previously separate components into a unified structure. This combination ensures that the IC tag cannot be easily detached or transferred to other cells, as it becomes an integral part of the battery cell assembly.
Solution Approach 2:
The patent introduces a resin layer as an intermediary substance that adheres the IC tag to the outer surface of the battery cell. This resin layer serves as a bonding medium that securely attaches the IC tag while maintaining its electrical and communication functions, preventing unauthorized detachment or transfer.
2Ease of operation
If the IC tag is powered by external electromagnetic waves, then wireless operation is achieved, but power supply control for authentication is lost
Solution Approach 1:
The patent implements self-service by having the IC tag powered by the secondary battery cell itself rather than external electromagnetic waves. The battery cell provides electrical power to the IC tag through direct electrical connection, enabling the IC tag to operate autonomously and allowing the battery system to control power supply for authentication purposes.
3Power
If multiple secondary battery cells are connected in series or parallel, then higher power output and capacity are achieved, but the risk of unauthorized attachment increases
Solution Approach 1:
The patent applies preliminary action by pre-attaching the IC tag to each secondary battery cell during manufacturing, before the cells are assembled into a battery pack. This ensures that authentication capability is already integrated into each cell, allowing the battery management system to verify the authenticity of each individual cell before allowing operation, thus preventing unauthorized attachment in multi-cell configurations.
Data Source
AI summary
Provided is a secondary battery cell that can certainly prevent detachment of an integrated circuit from the secondary battery cell and attachment of the integrated circuit to another secondary battery cell, a battery pack including such secondary battery cells, and an electric power consumption device including such a battery pack.A secondary battery cell 20 of the present invention includes an integrated circuit (an IC chip) 50 that has stored identification information, and the integrated circuit 50 is driven by power from the secondary battery cell. A battery pack of the present invention includes secondary battery cells each including an integrated circuit (an IC chip) that has stored identification information, and the integrated circuits are driven by power from the secondary battery cells. An electric power consumption device of the present invention contains a battery pack that includes secondary battery cells each including an integrated circuit (an IC chip) that has stored identification information, and the integrated circuits are driven by power from the secondary battery cells.