Container Battery Pack Layout for Higher-Density Energy Storage
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Solution Overview
Problem
Existing containerized energy storage systems face issues with a large number of internal components, low energy density, and high cost due to the use of small battery cells, leading to inefficient space utilization and increased manufacturing complexity.
Innovation Solution
The energy storage system is designed with 4 to 6 battery clusters, each containing 5 to 8 interconnected battery packs, arranged in a specific direction, along with a partitioned box structure that separates thermal management, firefighting, and convergence systems, reducing internal components and improving space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If small battery cells with 280Ah to 320Ah are used, then the battery capacity per cell is reduced, but the number of battery clusters increases to 10 or even 12, resulting in a large number of internal components and serious waste of container space
Solution Approach 1:
The patent merges multiple small battery cells into larger battery packs, with each battery pack containing multiple battery cells connected in series or parallel. This consolidation reduces the total number of battery clusters from 10-12 to just 2 clusters, significantly decreasing the number of internal components while maintaining the required total battery capacity
Solution Approach 2:
The patent introduces a convergence cabinet that integrates multiple functions including battery management, thermal management control, and monitoring systems into a single unified component. This multi-functional design further reduces the number of separate internal components needed in the energy storage system
2Quantity of substance
If small battery cells with 280Ah to 320Ah are used, then the battery capacity per cell is reduced, but the container space utilization becomes inefficient, resulting in low energy density
Solution Approach 1:
By consolidating multiple small battery cells into fewer, larger battery packs arranged in only 2 clusters, the patent achieves more efficient space utilization within the container. This merging approach increases energy density by reducing the proportion of empty space and structural components relative to the total battery capacity
Solution Approach 2:
The patent optimizes the spatial arrangement of battery packs within the container by considering three-dimensional positioning and orientation. The battery packs are strategically positioned to maximize space utilization, and the convergence cabinet is placed to facilitate access for maintenance while minimizing wasted space
3Quantity of substance
If multiple small battery clusters (10-12 clusters) are used, then the system complexity increases, but the manufacturing cost per power increases
Solution Approach 1:
The patent reduces the number of battery clusters from 10-12 to just 2 clusters, which significantly simplifies the manufacturing process. This consolidation reduces assembly time, decreases the number of connection points, and lowers overall manufacturing costs while maintaining the required power output
Solution Approach 2:
The convergence cabinet integrates multiple control and management functions into a single unit, reducing the need for separate control systems for each battery cluster. This multi-functional integration simplifies manufacturing and reduces the overall system cost
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
This configuration reduces the number of internal components by up to 40%, enhances energy density to over 5 MWh, and lowers manufacturing costs while ensuring improved safety and maintenance accessibility.
Implementation Method 1
the liquid cooling pipeline is configured to be connected to the battery packs... the liquid cooling pipeline includes a first-level liquid cooling pipeline, a second-level liquid cooling pipeline, a third-level liquid cooling pipeline
Implementation Method 2
the fire fighting pipeline is configured to be connected to the battery packs... the fire fighting pipeline includes a first-level fire fighting pipeline, a second-level fire fighting pipeline, a third-level fire fighting pipeline
Data Source
AI summary
The present application provides an energy storage system, the energy storage system includes a box and an energy storage device. The energy storage device is arranged in the box. The energy storage device includes N battery clusters arranged along a first direction. Each of the battery clusters includes M battery packs arranged and connected in a second direction perpendicular to the first direction, wherein 4≤N≤6, and 5≤M≤8. The energy storage system is capable of reducing the number of internal components and improving the space utilizing rate of box, effectively reduces manufacturing hours, and reduces cost of system manufacturing.