Battery Gas Guiding Structure for Safety Valve Venting
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Solution Overview
Problem
High-temperature gas spouted from the electrode body in power storage devices can intensely impinge on the case, causing it to break and discharge outside, which is not effectively managed by existing safety valves.
Innovation Solution
A power storage device is designed with a gas guiding part that directs the spouted gas towards a safety valve, preventing it from breaking through the case, using a gas guiding member made of materials resistant to high temperatures, such as metals or ceramics, and an inclined surface to guide the gas effectively towards the safety valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety valve is provided to release gas generated in the case, then gas release function is improved, but high-temperature spouted gas may break through the case and be discharged outside
Solution Approach 1:
A gas guiding member is introduced as an intermediary component between the electrode body and the case. This mediator intercepts the spouted gas and redirects it toward the safety valve, preventing direct impingement on the case while ensuring proper gas discharge path
Solution Approach 2:
The harmful high-temperature spouted gas is redirected through the gas guiding member to follow a controlled path toward the safety valve. The harmful thermal energy is converted into a controlled flow that activates the safety valve function rather than damaging the case
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 gas guiding part effectively suppresses the gas from breaking through the case and being discharged, ensuring the gas is safely released outside without damaging the device, as demonstrated by the prevention of case breakage in nail penetration tests.
Implementation Method 1
a gas guiding part for guiding the gas toward the safety valve when the gas spouts from the electrode body
Data Source
AI summary
A power storage device includes an electrode body, a case accommodating the electrode body, and a safety valve provided in this case to release gas generated in the case to the outside. The power storage device is further provided with a gas guiding member for guiding gas toward the safety valve when the gas spouts from the electrode body.