Energy Storage Valve Submodule Layout for Redundant Power Extraction
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Solution Overview
Problem
Existing energy storage valve submodules suffer from poor reliability due to complex wiring, singular power extraction sources, and a high likelihood of over-discharge, which can lead to safety issues such as thermal runaway and reduced charge-discharge performance.
Innovation Solution
The energy storage valve submodule is designed with multiple energy storage modules connected in series and/or parallel, featuring a main direct current bus, local and standby direct current buses, and power conversion modules to simplify wiring, provide redundant power sources, and enhance reliability by connecting loads to other submodules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-voltage busbars are used for power extraction in existing energy storage valve submodules, then power extraction capability is improved, but wiring complexity increases and reliability deteriorates
Solution Approach 1:
The patent segments the power extraction function by providing multiple independent power extraction points (first power extraction point connected to first energy storage module, second power extraction point connected to second energy storage module) instead of relying on a single complex high-voltage busbar system. This segmentation simplifies wiring while maintaining power extraction capability.
Solution Approach 2:
The patent introduces energy storage modules as intermediary components between the power source and load. Each energy storage module independently provides power extraction capability, acting as a mediator that eliminates the need for complex high-voltage busbar interconnections while ensuring reliable power delivery.
2Adaptability or versatility
If multiple internal power extraction points are provided in existing energy storage valve submodules, then power extraction flexibility is improved, but the likelihood of short-circuit faults increases
Solution Approach 1:
The patent segments the power extraction system into independent channels, where each energy storage module (first energy storage module, second energy storage module) has its own dedicated power extraction point and serves specific internal power equipment. This segmentation isolates potential fault areas, preventing short-circuit propagation while maintaining extraction flexibility.
Solution Approach 2:
The patent implements redundancy by providing multiple independent energy storage modules that can compensate for each other. If one module experiences a short-circuit fault, the other module(s) can continue to supply power, cushioning against system failure and maintaining reliability.
3Device complexity
If singular power extraction sources are used in existing energy storage valve submodules, then system simplicity is improved, but reliability deteriorates due to over-discharge risk
Solution Approach 1:
The patent divides the power extraction function across multiple independent energy storage modules (first energy storage module, second energy storage module, etc.), each capable of independently supplying power. This segmentation eliminates single-point failure risks while maintaining system simplicity through modular design, where each module operates independently to prevent over-discharge.
Data Source
AI summary
An energy storage valve submodule, an energy storage valve, and an energy storage station are provided, pertaining to the field of power electronics technologies. The energy storage valve submodule includes an energy storage module and a load; where the load is electrically connected to the energy storage module; and the load is further electrically connected to another energy storage valve submodule.