Solid-State Battery Pack Desulfurization Against Vibration Pulverization
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Solution Overview
Problem
Existing all-solid-state battery packs face issues with desulfurization performance due to vibrations causing desulfurization agent particles to collide and become powdered, leading to reduced adsorption capability, and existing solutions complicate the structure and increase weight.
Innovation Solution
Incorporating a desulfurization unit with an alumina-based desulfurization agent and a carbon material within a unit case, where the carbon material acts as a cushion to prevent pulverization and maintain high desulfurization performance, and the desulfurization unit is placed at the communication port or inside the battery case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressing device is used to eliminate gaps between desulfurization agent and container, then desulfurization performance is improved, but device complexity and weight increase
Solution Approach 1:
The pressing device is extracted and replaced by a pressing member that is already integrated into the battery pack structure. The battery case itself serves as the pressing member, eliminating the need for a separate pressing device while maintaining the necessary pressing function to prevent gaps and maintain desulfurization performance.
Solution Approach 2:
The battery case is given a dual function: it serves both as the housing structure and as the pressing member that applies pressure to the desulfurization agent. This multi-functionality eliminates the need for additional dedicated pressing components, reducing device complexity while maintaining pressing effectiveness.
2Reliability
If a pressing device is used to eliminate gaps between desulfurization agent and container, then desulfurization performance is improved, but weight increases
Solution Approach 1:
The battery case serves dual purposes as both housing and pressing member, eliminating the need for additional weight-bearing pressing devices while maintaining the necessary pressing function for desulfurization performance.
Solution Approach 2:
The separate pressing device is removed from the system, and its function is transferred to the existing battery case structure, thereby reducing overall weight while maintaining pressing effectiveness.
3Reliability
If desulfurization agent bodies are allowed to contact during vibration, then adsorption capacity is maintained, but fine powder is generated reducing performance
Solution Approach 1:
A cushioning member is introduced between the desulfurization agent particles to prevent direct contact and collision during vibration. This cushioning effect reduces particle fragmentation and fine powder generation while maintaining the adsorption capacity of the desulfurization agent.
Solution Approach 2:
The desulfurization unit employs a composite structure combining the desulfurization agent with a cushioning material. This composite approach allows the system to maintain both adsorption functionality and resistance to vibration-induced pulverization.
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 solution effectively suppresses the pulverization of desulfurization agents, maintaining high desulfurization performance and preventing structural complications and weight increases, as evidenced by reduced fine powder formation during vibration tests.
Implementation Method 1
The desulfurization unit includes a unit case and a desulfurization agent enclosed in the unit case. The desulfurization agent contains an alumina-based desulfurization agent. The desulfurization unit includes a carbon material enclosed in the unit case.
Implementation Method 2
an adsorbent that adsorbs hydrogen sulfide gas is disposed. This adsorbent is disposed at a bottom of a battery case in which is enclosed an all-solid-state battery.
Data Source
AI summary
The all-solid-state battery pack includes an all-solid-state battery containing a sulfide solid electrolyte, a battery case housing the all-solid-state battery, and a desulfurization unit disposed at a communication port or inside the battery case. The desulfurization unit includes a unit case and a desulfurization agent enclosed in the unit case. The desulfurization agent contains an alumina-based desulfurization agent. The desulfurization unit includes a carbon material enclosed in the unit case.