Battery Module Busbar Layout for Rotation-Free Pack Assembly
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Solution Overview
Problem
Conventional battery pack assembly efficiency is degraded due to the need for rotating and connecting battery modules, increasing production time.
Innovation Solution
A battery pack design where positive and negative electrode busbars are positioned on the same side surface of each module, allowing for direct electrical connection without module rotation, using busbar connection parts to connect adjacent modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a battery module uses a large number of battery cells connected in parallel to provide high current, then the current output capability is improved, but the internal resistance increases and heat generation becomes excessive
Solution Approach 1:
The battery module is divided into multiple battery packs, with each pack containing a subset of battery cells. This segmentation allows the total current requirement to be distributed across multiple independent packs, reducing the internal resistance and heat generation within each individual pack while maintaining the overall high current output capability of the module.
2Stability of the object's composition
If battery cells are tightly fixed using traditional adhesive methods, then the structural stability is improved, but the thermal dissipation capability deteriorates due to poor heat conduction from adhesives
Solution Approach 1:
A fixing member with high thermal conductivity is introduced as an intermediary between the battery cells and the module housing. This fixing member simultaneously provides mechanical fixation to ensure structural stability and acts as a thermal conduction path to efficiently dissipate heat from the battery cells, replacing the inadequate thermal performance of traditional adhesives.
3Reliability
If the battery module design accommodates expansion of battery cells during charging, then the reliability is improved, but the device complexity increases due to additional space requirements and structural design
Solution Approach 1:
The fixing member serves multiple functions simultaneously: it mechanically fixes the battery cells in position, provides a thermal conduction path for heat dissipation, and acts as a buffer to accommodate expansion of battery cells during charging. This multi-functionality reduces the need for separate components for each function, thereby simplifying the overall module structure while maintaining reliability.
4Ease of manufacture
If traditional adhesive fixation methods are used for battery cells, then the ease of manufacture is improved, but the heat dissipation performance deteriorates and structural strength is insufficient
Solution Approach 1:
The fixing member is designed with optimized geometric parameters including thickness, width, and positioning to simultaneously achieve adequate mechanical strength for structural support, sufficient thermal conductivity for heat dissipation, and ease of integration into the manufacturing process. This parameter optimization allows the component to meet multiple performance requirements without compromising manufacturability.
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
Enhances assembly efficiency by eliminating the need for module rotation, enabling quick assembly of battery packs.
Implementation Method 1
the fixing member being configured to conduct heat away from the battery cells
Data Source
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AI summary
The present invention relates to a battery module and a battery pack including the same, and more particularly, to a battery module including busbars having the same shape and connected to a positive (+) electrode terminal and a negative (-) electrode terminal of each of a plurality of battery cells, and to a battery pack provided with a busbar connection part which electrically connects and couples the modules through the busbar in the same side surface part of each of the plurality of battery modules.