Battery Pack Vent Shield With Sagging Heat-Resistant Member
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing battery pack structures, emissions such as high-temperature gas or internal components discharged forcefully from the smoke exhaust port of secondary battery cells can affect surrounding components, including heat insulating materials.
Innovation Solution
The implementation of a power storage device with a pressure relief valve and a heat-resistant member featuring a sagging portion that is sagged to reduce the momentum of emissions, using materials like silica cloth with heat resistance and a bellows shape to manage the discharge effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat insulating material is disposed above the smoke exhaust port, then thermal insulation is improved, but the momentum of discharged emissions affects the heat insulating material and surrounding components
Solution Approach 1:
A heat-resistant member is introduced as an intermediary component between the smoke exhaust port and the heat insulating material. This mediator absorbs the impact of high-momentum emissions while protecting the heat insulating material from direct exposure to thermal and mechanical stress
Solution Approach 2:
The heat-resistant member includes a sagging portion that can deform elastically under the impact of emissions. This flexible structure reduces the momentum of discharged emissions by allowing controlled deformation rather than rigid resistance, thereby protecting surrounding components
2Object-affected harmful factors
If a rigid heat-resistant member is used to block emissions, then protection is improved, but the member may be damaged by high-momentum discharge
Solution Approach 1:
The heat-resistant member transitions from a static rigid structure to a dynamic flexible structure with a sagging portion. This dynamic design allows the member to adapt to the force of emissions through controlled deformation, maintaining structural integrity while providing effective protection
Solution Approach 2:
The sagging portion is pre-configured to deform in the direction of emission discharge, creating a cushioning effect before the full impact occurs. This beforehand cushioning reduces the peak force on the heat-resistant member, preventing damage while maintaining protection
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 sagging portion effectively reduces the momentum of emissions, minimizing contact with surrounding components and maintaining the integrity of the heat-resistant member, thereby protecting the device from thermal impact.
Implementation Method 1
The heat-resistant member includes a sagging portion disposed while being sagged. The sagging portion effectively reduces the momentum of emissions
Data Source
AI summary
A power storage device includes a power storage cell provided with a pressure relief valve, a housing in which the power storage cell is disposed, and a seat member provided in the housing. The seat member includes a sagging portion disposed while being sagged.