Battery Gas Discharge Channel for Multi-Cell Vent Detection
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Solution Overview
Problem
Existing battery systems for motor vehicles face challenges in efficiently and reliably detecting gas discharges from battery cells, which can indicate critical faults and potential system damage, requiring a simple, space-efficient, and cost-effective solution.
Innovation Solution
A battery arrangement with a sensor device that utilizes a gas discharge channel to detect gas escaping from multiple cells, where a sensor element with an electrical line is placed in the flow path, and the line can be damaged by gas flow, allowing detection of gas discharge through changes in electrical variables, enabling simultaneous monitoring of multiple cells with fewer sensor elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensor elements are used to monitor each battery cell individually, then detection reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple monitoring functions into a single sensor element by routing gas discharge channels from multiple battery cells through a common flow path. This single sensor element can detect gas discharges from any connected cell, reducing the number of sensors needed while maintaining detection coverage across multiple cells.
Solution Approach 2:
The sensor element is designed with universal functionality to monitor gas discharges from multiple different battery cells through a shared gas discharge channel. The electrical line configuration allows the same sensor to serve multiple cells, making it a multi-functional component that improves reliability without proportionally increasing device complexity.
2Measurement precision
If multiple sensor elements are deployed for each battery cell, then detection precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple detection functions into a single sensor element, reducing the total number of components that need to be manufactured and assembled. This merging approach lowers manufacturing costs while the shared gas discharge channel design ensures that each cell can still be monitored with the same detection precision as individual sensors would provide.
3Volume of moving object
If a compact sensor design is used, then space efficiency is improved, but detection capability may be compromised
Solution Approach 1:
The patent arranges the gas discharge channels and flow paths in a spatial configuration that allows multiple cell connections to converge on a single sensor location. This dimensional arrangement of channels enables a compact sensor design while maintaining the ability to detect gas discharges from multiple cells, preserving detection capability despite reduced sensor volume.
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 solution allows for reliable, cost-effective, and space-saving detection of gas discharges from battery cells, reducing the need for multiple sensors and minimizing environmental risks by using the pressure effect of escaping gas to damage the sensor element, even in cold degassing scenarios.
Implementation Method 1
the sensor element is designed such that the electrical line can be damaged by a gas flowing through the gas discharge channel along the at least one flow path
Data Source
AI summary
A battery arrangement with a sensor device for detecting a gas discharge from at least one battery cell, which includes a releasable cell degassing opening. The battery arrangement has a gas discharge channel with at least one gas inlet region, a gas discharge region and at least one flow path from the at least one gas inlet region to the at least one gas discharge region. The sensor device includes at least one sensor element protruding into the flow path with an electrical line which can be damaged by a gas flowing through the gas discharge channel along the at least one flow path and which has escaped from the at least one battery cell.