Battery Electrode Plate Structure for Reliable PCB Connection
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Solution Overview
Problem
Existing secondary batteries face challenges in providing a large enough output terminal for small electrodes, making it difficult to establish reliable electrical connections to circuit boards, which can lead to conduction failures.
Innovation Solution
A battery design featuring a core cell with a conduction hole and an insulating sheet, where a compressible conductive connection member connects the electrode plate to the first electrode, allowing for a larger output terminal size and reducing the risk of conduction failures by enabling easy electrical connection to circuit boards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small electrode is used in the core cell, then the battery size is reduced, but the output terminal size becomes insufficient for reliable circuit board connection
Solution Approach 1:
The battery structure is segmented into distinct functional components: the core cell containing small electrodes, the insulating sheet with conduction hole, and the electrode plate. This segmentation allows the small electrode in the core cell to be decoupled from the terminal size requirement, enabling reliable circuit board connection through the separate electrode plate while maintaining compact battery size.
Solution Approach 2:
The insulating sheet with conduction hole acts as an intermediary between the small electrode and the larger electrode plate. It provides electrical connection while maintaining insulation, enabling the transition from small electrode to larger terminal without compromising reliability or increasing battery volume.
2Reliability
If the output terminal size is increased for better circuit board connection, then the battery volume increases
Solution Approach 1:
The battery is divided into the core cell volume and the terminal structure volume. The electrode plate can be designed with optimal size for circuit board connection without proportionally increasing the core cell dimensions, as the terminal structure is separated from the active electrode volume.
Solution Approach 2:
The electrode plate extends in dimensions different from the core cell thickness, allowing increased terminal surface area for reliable connection without significantly increasing the overall battery volume. The insulating sheet with conduction hole enables this dimensional transition efficiently.
3Ease of manufacture
If a rigid connection structure is used between electrode and terminal, then manufacturing is simplified, but conduction failure risk increases due to stress and misalignment
Solution Approach 1:
The connection structure transitions from rigid to dynamic/compliant, allowing the electrode and terminal to maintain reliable electrical connection despite manufacturing tolerances, thermal expansion, or mechanical stress. The insulating sheet with conduction hole provides this compliance while maintaining electrical continuity.
Solution Approach 2:
The connection interface parameters are optimized to balance manufacturability and reliability. The conduction hole dimensions, electrode plate size, and material properties are tuned to provide sufficient tolerance for assembly while maintaining reliable conduction under operational conditions.
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 design facilitates easy electrical connection to circuit boards, reducing the likelihood of conduction failures and allowing for a more reliable and efficient use of batteries in various devices.
Implementation Method 1
the conductive connection member comprises a compressible conductor which is compressible so as to be compressed in mutually-facing directions between the electrode plate and the first electrode for contacting with the electrode plate and the first electrode
Data Source
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AI summary
A battery includes: a core cell including a first surface and a second surface which are opposite each other and on which first and second electrodes are respectively located, and a lateral surface connecting the first and second surfaces; an insulating sheet arranged on the first surface of the core cell and in which a conduction hole facing the first electrode is defined; and an electrode plate arranged on the insulating sheet and electrically connected to the first electrode through the conduction hole.