Battery Cell Interconnection With Integrated Heat Sink Balancing
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Solution Overview
Problem
Existing battery technologies struggle to efficiently manage temperature and state of charge variations across multiple cells, leading to potential performance issues and safety risks.
Innovation Solution
An interconnection system comprising an electrically insulating substrate with a heat sink on one face and a conducting layer on the other, allowing heat dissipation and temperature control through resistors, switches, and a battery management system to regulate cell connections and temperature gradients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air circulation is used to cool the battery, then temperature reduction is achieved, but cooling efficiency is insufficient for high-performance batteries
Solution Approach 1:
The patent combines the electrical connection function with the thermal management function into a single integrated interconnection structure. The interconnection simultaneously provides electrical connectivity between cells and serves as a heat dissipation pathway, eliminating the need for separate cooling mechanisms and achieving efficient temperature control.
Solution Approach 2:
The interconnection acts as a thermal intermediary, conducting heat away from the cells through its thermally conductive structure. It serves as a mediator between the heat-generating cells and the external environment, efficiently transferring thermal energy without requiring direct air contact with the cells.
2Device complexity
If simple electrical connectors are used, then device complexity is reduced, but temperature and state of charge management capability is lost
Solution Approach 1:
The interconnection is designed to perform multiple functions simultaneously: electrical connection, thermal management, and state of charge monitoring. This multi-functional design eliminates the need for separate components, maintaining structural simplicity while achieving comprehensive battery management capabilities.
Solution Approach 2:
The patent merges electrical connectivity and thermal management functions into a single integrated structure. The interconnection simultaneously conducts electricity and heat, providing both electrical and thermal pathways through the same component, thereby reducing overall system complexity.
3Ease of manufacture
If cells are connected without integrated thermal management, then manufacturing is simpler, but temperature variations and safety risks increase
Solution Approach 1:
The thermal management capability is integrated into the interconnection structure itself, combining cell connection and heat dissipation functions. This integration ensures uniform temperature distribution across all cells during manufacturing and operation, eliminating safety risks associated with temperature variations while maintaining manufacturing simplicity.
Solution Approach 2:
The interconnection provides localized thermal management at each cell connection point, ensuring that heat is dissipated uniformly across all cells. This local quality approach prevents hot spots and temperature variations while maintaining a simple integrated structure that does not complicate the manufacturing process.
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
Effectively manages temperature and state of charge variations, ensuring uniform cell performance and safety by dissipating heat and balancing cell conditions.
Implementation Method 1
conducting any heat generated in the cells to the cell-receiving regions on the second face of the substrate, and through the substrate to the heat sink, thereby dissipating heat from battery
Data Source
AI summary
An interconnection for a battery comprising a plurality of cells, the interconnection comprising: an electrically insulating substrate having a first face and a second face; a heat sink on the first face of the substrate; and a layer of electrically conducting material on the second face of the substrate, said layer of electrically conducting material providing one or more cell-receiving regions for connection with the plurality of cells.