Battery Pack Cell Layout Without Cross Beams
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Solution Overview
Problem
Conventional power battery packs have low volume utilization due to the presence of transverse and longitudinal beams, limiting the number of cells that can be mounted and reducing the endurance capacity of the pack.
Innovation Solution
The power battery pack design includes an accommodating device with varying distances between side edges, allowing cells to extend between these edges, thereby eliminating the need for transverse and longitudinal beams and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If transverse beams and longitudinal beams are disposed in the accommodating device to provide structural support, then the strength and stability of the accommodating device are improved, but the volume utilization of the accommodating device decreases to about 40%
Solution Approach 1:
The patent removes the transverse beams and longitudinal beams from the accommodating device, extracting the structural support function to the side beams alone. This eliminates the space occupied by internal beams, increasing volume utilization while maintaining structural integrity through the side beams and bottom plate configuration.
Solution Approach 2:
The side beams are designed to serve multiple functions: providing structural support, defining accommodating spaces, and enabling direct cell mounting. This multi-functionality replaces the need for separate transverse and longitudinal beams, achieving both strength requirements and high volume utilization.
2Stability of the object's composition
If a plurality of transverse beams and longitudinal beams are used to define accommodating spaces, then the structural stability is improved, but the weight of the accommodating device increases
Solution Approach 1:
The patent extracts and removes the transverse beams and longitudinal beams from the structure, eliminating their weight contribution. The structural stability is maintained through an optimized side beam and bottom plate configuration that provides sufficient support without the additional weight of internal beams.
3Ease of operation
If transverse beams and longitudinal beams are disposed in the accommodating device to facilitate battery module arrangement, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent removes the complex network of transverse and longitudinal beams, simplifying the accommodating device structure. The ease of operation is maintained through the simplified side beam and bottom plate configuration that still provides adequate accommodating spaces for battery modules.
Solution Approach 2:
The side beams are designed to perform multiple functions including defining accommodating spaces and facilitating module arrangement, replacing the need for separate transverse and longitudinal beams. This multi-functionality reduces structural complexity while maintaining operational ease.
4Ease of operation
If the accommodating device is designed as a square or rectangle to facilitate battery module arrangement, then the ease of operation is improved, but the mounting area utilization of the vehicle body chassis decreases
Solution Approach 1:
The patent employs asymmetric side beam configurations with varying distances between side edges in different accommodating regions. This asymmetric design allows the accommodating device to conform to the available space on the vehicle body chassis, maximizing mounting area utilization while still facilitating battery module arrangement.
Solution Approach 2:
The patent applies different local configurations to different regions of the accommodating device, with varying distances between side edges in different accommodating regions. This local quality variation allows optimization for both module arrangement ease and mounting area utilization by adapting the structure to local spatial constraints.
Data Source
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AI summary
The present disclosure relates to a power battery pack, an energy storage device, an electric vehicle. The power battery pack includes an accommodating device (200) and a plurality of cells (100), the accommodating device (200) includes a plurality of accommodating regions, and each accommodating region has a first side edge (201) and a second side edge (202) and cells (100) disposed between the first side edge and the second side edge. A distance between the first side edge (201) and the second side edge (202) along a first direction varies with different accommodating regions, each cell (100) includes a first end and a second end, and a distance between the first end and the second end matches a distance between a corresponding first side edge (201) and a corresponding second side edge (202).