Solid-State Battery Case Layout for Hydrogen Sulfide Detection
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Solution Overview
Problem
Existing power storage devices with all-solid-state batteries fail to detect sulfide gas effectively due to inadequate positioning of sulfide sensors, leading to potential undetected gas generation.
Innovation Solution
A power storage device design featuring a battery cell with a sulfide solid electrolyte and a case with protruding portions housing gas collection units, such as hydrogen sulfide sensors, positioned to detect gases efficiently, including multiple sensors at different locations to enhance detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sulfide sensor is mounted inside the case without a protruding portion, then the device structure remains simple, but the sulfide gas detection capability deteriorates due to poor gas collection
Solution Approach 1:
The gas collection unit is moved from the internal space to the external surface of the case by forming a protruding portion. This dimensional transition allows the sensor to be positioned in a location where sulfide gas naturally accumulates (at the bottom surface facing downward), significantly improving detection capability without adding complex internal structures
Solution Approach 2:
The protruding portion acts as an intermediary structure that bridges the case interior and exterior. It provides a dedicated gas collection space that channels sulfide gas toward the sensor, enhancing detection efficiency while maintaining case structural integrity
2Measurement precision
If a single gas collection unit is provided, then the device structure remains simple, but the detection accuracy deteriorates due to insufficient gas collection from different directions
Solution Approach 1:
The gas detection function is segmented into multiple independent gas collection units positioned at different locations within the protruding portion. Each unit detects gas from its specific position, and their combined data provides comprehensive detection coverage, improving overall detection accuracy
Solution Approach 2:
Multiple sensors are arranged in the protruding direction (vertical dimension) at different heights within the protruding portion. This spatial distribution in the protruding direction allows each sensor to detect gas at different levels, enhancing detection comprehensiveness without requiring lateral expansion
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 design allows for excellent detection and collection of sulfide gas, enabling timely intervention and preventing potential battery abnormalities, ensuring safe operation of vehicles equipped with these devices.
Implementation Method 1
at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide
Data Source
AI summary
A power storage device is a power storage device including: a battery cell having a sulfide solid electrolyte; a case that accommodates the battery cell; and at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide, wherein a protruding portion is formed in a bottom surface of an inner surface of the case, and the gas collection unit is disposed in the protruding portion.