Protective Gas Monitoring for Sealed Battery Cabinets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing energy storage systems face issues with thermal runaway in sealed cabinets due to ineffective monitoring and control of protective gas supply, leading to potential fires or explosions from thermal runaway gases.
Innovation Solution
A gas protection system with a gas transmission pipe, detection modules, and a supply module that accurately monitors and controls gas parameters, including temperature, humidity, pressure, and flow rate, to manage gas circulation and supply based on these parameters, ensuring accurate and controlled gas management within the sealed cabinet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nitrogen is filled into the sealed cabinet to protect against thermal runaway, then the protective effect is improved, but the monitoring capability of nitrogen supply deteriorates
Solution Approach 1:
A gas transmission pipe is introduced as an intermediary component between the nitrogen source and the sealed cabinet. This pipe includes a detection module that can monitor gas parameters (such as concentration, temperature, or flow rate) without requiring direct access to the interior of the sealed cabinet. The intermediary pipe thus enables indirect monitoring while maintaining the protective nitrogen atmosphere inside the cabinet.
Solution Approach 2:
The monitoring function is shifted from the spatial dimension (inside the sealed cabinet) to a different dimension (along the gas transmission pipe). By placing the detection module on the pipe rather than inside the cabinet, the system achieves monitoring capability in a new spatial location, resolving the contradiction between maintaining protective atmosphere and enabling monitoring.
2Measurement precision
If detection module is placed inside the sealed cabinet, then the monitoring accuracy is improved, but the interference from thermal runaway gases increases
Solution Approach 1:
The gas transmission pipe serves as a mediator that transports samples of the internal atmosphere to the detection module located outside the sealed cabinet. This intermediary approach allows the detection module to analyze gas parameters without being exposed to the harsh thermal and chemical environment inside the cabinet, thus maintaining monitoring accuracy while avoiding interference from thermal runaway gases.
Solution Approach 2:
The detection module is extracted from the sealed cabinet environment and relocated to the gas transmission pipe. This extraction removes the detection device from the harmful thermal runaway gas environment while still allowing it to monitor the gas composition and parameters that originate from inside the cabinet through the transmission pipe.
3Reliability
If gas supply is increased to improve protection, then the safety is improved, but the energy consumption increases
Solution Approach 1:
The detection module continuously monitors gas parameters in the transmission pipe and provides feedback to the gas supply control system. Based on this real-time feedback information about the actual nitrogen concentration and cabinet conditions, the control system dynamically adjusts the gas supply rate, increasing supply only when necessary to maintain safety while reducing supply during normal conditions to minimize energy consumption.
Solution Approach 2:
The gas supply system transitions from a static, continuous supply mode to a dynamic, demand-responsive mode. The gas flow rate is continuously adjusted based on real-time detection data from the monitoring system, allowing the system to optimize the balance between safety (adequate nitrogen levels) and energy efficiency (minimal required supply).
Data Source
AI summary
A gas protection system, a gas protection method, and an energy storage system are provided. The gas protection system includes: a gas transmission pipe in communication with a sealed cabinet, where the gas transmission pipe is configured to input and output a protective gas to and from the sealed cabinet; a first detection module disposed in the gas transmission pipe; and a gas supply module configured to acquire gas parameters of the protective gas in the gas transmission pipe from the first detection module and supply a gas to the sealed cabinet based on the gas parameters.