Battery Cell Terminal Layout for Lower Resistance and Heat
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Solution Overview
Problem
Existing battery cell designs face challenges in maximizing energy density and minimizing internal resistance due to the need for multiple electrode components to share terminals, leading to increased heat generation and reduced charging and discharging performance.
Innovation Solution
A battery cell design featuring a housing with separate first and second electrode components arranged along a direction, insulated from each other, with dedicated terminals for each component to reduce conductive paths and internal resistance, improving power transmission and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple electrode components share common terminals, then device complexity is reduced, but internal resistance increases and charging/discharging performance deteriorates
Solution Approach 1:
The battery cell is divided into multiple independent battery units, each with its own dedicated terminals. This segmentation allows each electrode component to have independent current collection paths, reducing internal resistance while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
The patent transitions from a two-dimensional terminal arrangement (shared terminals at ends) to a three-dimensional configuration where terminals are distributed along the length of the battery cell. This dimensional change enables shorter current paths and reduced internal resistance without significantly increasing external complexity.
2Quantity of substance
If electrode components are arranged closely to maximize energy density, then volume efficiency improves, but heat generation increases due to longer conductive paths
Solution Approach 1:
By segmenting the battery into multiple units with independent terminals, the patent creates shorter conductive paths within each unit. This allows electrode components to be arranged closely for high energy density while maintaining short current paths that reduce resistive heating.
Solution Approach 2:
The patent utilizes the longitudinal dimension of the battery cell to distribute terminals along the length, creating a three-dimensional current collection architecture. This enables close packing of electrode components in the cross-section (maximizing energy density) while maintaining short current paths through the longitudinal dimension (reducing heat generation).
Data Source
AI summary
A battery cell includes a housing, a first electrode component, a second electrode component, a first electrode terminal, and a second electrode terminal. The first electrode component and the second electrode component are accommodated within the housing and arranged along a first direction, and the first electrode component is insulated from the second electrode component. The first electrode terminal is arranged within the housing and electrically connected to the first electrode component to lead out electrical power from the first electrode component. The second electrode terminal is arranged within the housing and electrically connected to the second electrode component to lead out electrical power from the second electrode component.