Cylindrical Battery Bus Bar Layout for Integrated Heat Dissipation
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Solution Overview
Problem
Battery systems with cylindrical cells face increased manufacturing costs due to the need for separate heat dissipation devices and additional bus bars to connect positive and negative electrodes to electronic components, which also complicates heat dissipation.
Innovation Solution
A battery system design where positive and negative bus bars protrude into the installation space with electronic components, utilizing thermally-conductive adhesive layers to effectively dissipate heat from cylindrical battery cells without a separate heat dissipation device, thereby eliminating the need for additional bus bars and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If separate heat dissipation devices are disposed in the battery system, then heat dissipation effectiveness is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The housing is designed to integrate heat dissipation functionality directly into its structure. The housing includes a heat dissipation portion that contacts the battery cells, allowing the housing to serve dual purposes: mechanical protection and thermal management. This eliminates the need for separate heat dissipation devices, reducing device complexity while maintaining effective heat dissipation.
Solution Approach 2:
The housing is designed as a multi-functional component that simultaneously provides structural support, protection, and heat dissipation. The heat dissipation portion of the housing directly contacts the battery cells to conduct heat away, making the housing universal in its functionality rather than requiring dedicated separate components for each function.
2Reliability
If separate bus bars are disposed to connect positive and negative electrodes to electronic components, then electrical connection is improved, but manufacturing cost increases
Solution Approach 1:
The bus bar is designed to perform multiple functions simultaneously. It provides electrical connection between the battery cells and electronic components while also serving as a heat dissipation path. This merging of electrical connection and thermal management functions into a single component reduces the number of parts needed, simplifying manufacturing and reducing costs while maintaining reliable electrical connection.
Solution Approach 2:
The bus bar is designed as a multi-functional component that simultaneously conducts electricity and dissipates heat. By making the bus bar universal in its functionality, the invention eliminates the need for separate dedicated electrical connection components and separate heat dissipation devices, thereby reducing manufacturing cost while maintaining reliable electrical connection.
3Ease of operation
If both positive and negative bus bars protrude to one side where electronic components are installed, then ease of connection is improved, but device complexity increases
Solution Approach 1:
The housing structure is designed to integrate the support for both bus bars and the electronic component mounting area into a single unified structure. By making the housing universal in supporting both electrical connection and thermal management functions, the invention simplifies the overall device structure rather than increasing complexity, while still allowing both bus bars to protrude to the same side for ease of connection.
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 solution allows for efficient heat dissipation from cylindrical battery cells within the battery system without additional heat dissipation devices, reducing manufacturing costs and simplifying the electrical connections between bus bars and electronic components.
Implementation Method 1
including a thermally-conductive adhesive layer effectively transferring heat emitted from the plurality of cylindrical battery cells to a lower cover and the housing
Data Source
AI summary
Provided is a battery system including cylindrical battery cells. The system includes positive and negative bus bars each installed in a housing and electrically connected to a plurality of cylindrical battery cells, and protruding into an installation space where an electronic component is installed, and a thermally-conductive adhesive layer effectively transferring heat emitted from the plurality of cylindrical battery cells to a lower cover and the housing.