Battery Adapter Layout for Higher Cell Energy Density
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Solution Overview
Problem
Conventional battery designs occupy significant space with the connection structure between the adapter and the tab, leading to lower energy density.
Innovation Solution
The battery design includes a first adapter positioned between the side plate and the cell without overlapping projections, utilizing space efficiently by aligning the adapter and tab in non-overlapping directions, and incorporating insulation layers and connectors to ensure electrical connection and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the adapter is positioned to connect with the tab in a conventional overlapping arrangement, then the electrical connection is secure, but the space utilization in the chamber is reduced
Solution Approach 1:
The adapter is repositioned from a conventional overlapping arrangement to a non-overlapping arrangement where the projection of the adapter on the side plate does not overlap with the projection of the tab. This spatial reconfiguration in multiple dimensions allows both components to coexist without interference, maximizing the usable volume within the chamber while maintaining secure electrical connection.
Solution Approach 2:
The adapter is positioned between the side plate and the cell, nesting it within the existing structural layers. This nested arrangement allows the adapter to occupy the available space efficiently without protruding into the cell volume or requiring additional external space, thereby resolving the contradiction between connection security and space utilization.
2Quantity of substance
If the adapter and tab projections overlap on the side plate, then the connection structure is simplified, but the energy density of the battery is reduced
Solution Approach 1:
By changing the spatial arrangement from an overlapping projection to a non-overlapping projection on the side plate, the design utilizes available space in different dimensional orientations. This allows the adapter and tab to be positioned such that their projections do not conflict, thereby maximizing the volume available for active materials and improving energy density while maintaining a manageable structural complexity.
3Volume of moving object
If the adapter is placed closer to the cell to save space, then the chamber space utilization is improved, but the insulation requirements become more stringent
Solution Approach 1:
The adapter is nested between the side plate and the cell, positioning it in the available gap space without requiring additional insulation layers. This nested placement optimizes chamber space utilization while the adapter's design inherently accounts for insulation needs, balancing space efficiency with electrical safety requirements.
Solution Approach 2:
The design adjusts the positioning parameters of the adapter such that its projection on the side plate does not overlap with the tab projection, and its length along the direction from the side plate to the tab is controlled (1mm-3mm). These parameter changes optimize space utilization while maintaining adequate insulation distances to meet safety requirements.
Data Source
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AI summary
The present invention provides a battery, including a housing enclosed to form a chamber and including a first side plate; a cell located in the chamber and provided with a first tab; a first adapter electrically connected with the first tab and disposed between the first side plate and the cell, and a projection of the first adapter on the first side plate does not overlap with a projection of the first tab on the first side plate. The present invention can improve the battery performance such as energy density.