Container Battery Cluster Layout for Higher Energy Density
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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 and inefficient space utilization, leading to challenges in improving power per unit volume and increasing manufacturing complexity.
Innovation Solution
The energy storage system is designed with a compact arrangement of battery clusters and packs within a standard 20-foot container, utilizing 4 to 6 clusters and 5 to 8 packs per cluster, each with a high capacity of 628 Ah to 942 Ah, and incorporating a partitioned structure to separate thermal management, firefighting, and convergence systems, along with efficient liquid cooling and firefighting pipelines to enhance safety and 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 pack containing 9 to 12 battery cells. This consolidation reduces the total number of battery clusters from 10-12 to just 4, significantly decreasing the number of internal components while maintaining the same total battery capacity.
Solution Approach 2:
The patent implements a nested structure where battery cells are arranged in series within battery packs, and battery packs are arranged in parallel within battery clusters. This hierarchical nesting optimizes space utilization and reduces the number of top-level components needed in the containerized 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 of the containerized energy storage system
Solution Approach 1:
By merging 9-12 battery cells into each battery pack and arranging 4 battery packs in parallel to form a battery cluster, the patent achieves compact arrangement that improves container space utilization. This configuration increases the energy density of the containerized energy storage system while maintaining the required battery capacity.
Solution Approach 2:
The patent optimizes the spatial arrangement of battery packs within the container by considering three-dimensional positioning. The battery packs are arranged in a configuration that maximizes space utilization in length, width, and height dimensions, thereby improving overall container space efficiency and energy density.
3Quantity of substance
If the number of battery clusters is increased to 10 or even 12, then the total battery capacity may be maintained, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent reduces manufacturing complexity and cost by consolidating battery cells into fewer, larger battery packs and clusters. This reduction from 10-12 battery clusters to just 4 clusters decreases assembly complexity, reduces the number of connections and components required, and lowers overall manufacturing costs while maintaining the same total battery capacity.
4Quantity of substance
If the number of battery clusters is increased to 10 or even 12, then the total battery capacity may be maintained, but the power per unit volume of the containerized energy storage system decreases
Solution Approach 1:
By merging battery cells into compact battery packs and arranging them efficiently in 4 clusters, the patent increases the power density of the system. This compact arrangement reduces the overall volume occupied by battery components, thereby increasing the power per unit volume of the containerized energy storage system.
Solution Approach 2:
The patent optimizes the three-dimensional arrangement of battery packs within the container to maximize power density. By carefully positioning battery packs in space and minimizing empty volume, the system achieves higher power per unit volume compared to conventional arrangements with more dispersed battery clusters.
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%, improves energy density to over 5 MWh, enhances space utilization, and lowers manufacturing costs while ensuring safety through effective thermal management and firefighting, facilitating easier maintenance and transportation.
Implementation Method 1
the energy storage system includes a first-level liquid cooling pipeline, a second-level liquid cooling pipeline, a third-level liquid cooling pipeline, and a thermal management host. One end of the third-level liquid cooling pipeline is connected to the battery pack
Implementation Method 2
the firefighting system includes a plurality of first-level fire-fighting pipelines, a plurality of second-level fire-fighting pipelines, a plurality of third-level fire-fighting pipelines, and a fire host
Data Source
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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.