Flow Battery Electrolyte Degassing With Vacuum Tank Circulation
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Solution Overview
Problem
The gas content in the electrolyte of flow batteries significantly influences their operation, but existing technologies face difficulties in effectively degassing the electrolyte.
Innovation Solution
A flow battery degassing device is introduced, comprising a degassing tank, a degassing pump, liquid outlet and inlet pipes, and a control device. The degassing pump creates a vacuum environment in the degassing tank, allowing the electrolyte to flow in, degas, and return to the liquid tank, thereby preventing gas adsorption on the stack unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a degassing device is introduced to remove gas from the electrolyte, then the gas content in the electrolyte is reduced and operation efficiency is improved, but the device complexity and system cost increase
Solution Approach 1:
The patent combines the degassing function with the existing electrolyte circulation system by integrating the degassing device into the flow path between the liquid tank and stack unit. The degassing pump, vacuum tank, and control valves are merged with the existing electrolyte delivery system, allowing gas removal without requiring a completely separate system.
Solution Approach 2:
The patent introduces a vacuum tank as an intermediary component where gas separation occurs. The vacuum tank serves as a mediator between the electrolyte circulation system and the gas removal process, allowing gas bubbles to separate from the electrolyte in a controlled environment before the degassed electrolyte returns to the liquid tank.
2Reliability
If the degassing pump operates continuously to maintain vacuum environment, then gas removal effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic degassing operation through a control device that manages the vacuum pump and switching valves. The system operates in cycles where the vacuum pump creates negative pressure for gas removal, then the system allows electrolyte to return to the liquid tank, repeating the process periodically rather than maintaining continuous vacuum.
Solution Approach 2:
The patent employs a control device that monitors the degassing process and adjusts pump operation accordingly. The control device receives feedback about the system state and regulates the vacuum pump operation to maintain effective gas removal while minimizing energy consumption by operating only when needed.
3Productivity
If the electrolyte flow rate through the degassing tank is increased, then gas removal speed is improved, but the flow rate control precision and degassing completeness deteriorate
Solution Approach 1:
The patent uses dynamically adjustable flow control valves in the liquid outlet and inlet pipes to regulate electrolyte flow through the degassing tank. The system can adjust flow rates in real-time based on operational requirements, allowing optimization between degassing speed and completeness for different operating conditions.
Solution Approach 2:
The patent creates different flow conditions in different sections of the degassing system. The electrolyte experiences higher flow velocity in the degassing tank where gas separation is most effective, while flow rate is controlled at entry and exit points to ensure proper residence time and complete gas removal.
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
The device ensures the flow rate and reaction efficiency of the electrolyte, maintains high operation efficiency of the stack unit, and enhances the reliability of the flow battery's operation by performing degassing treatment without disrupting normal battery operation.
Implementation Method 1
the degassing pump is provided on the liquid inlet pipe and configured to form a vacuum environment in the degassing tank
Data Source
AI summary
Disclosed are a flow battery degassing device, a degassing method, a system, and a storage medium. The flow battery includes a liquid tank. The flow battery degassing device includes a degassing tank, a degassing pump, a liquid outlet pipe, and a liquid inlet pipe. The liquid outlet pipe is configured to enable an electrolyte in the liquid tank to flow into the degassing tank. The liquid inlet pipe is configured to enable the electrolyte in the degassing tank to flow into the liquid tank. The degassing pump is provided on the liquid inlet pipe and configured to form a vacuum environment in the degassing tank.