Battery Pack Desulfurization Path Layout to Prevent Vent Blockage
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Solution Overview
Problem
In all-solid-state battery packs, desulfurization agents can be crushed due to vibration, leading to blockage of the discharge portion, which affects the removal of hydrogen sulfide gas.
Innovation Solution
An energy storage device design featuring a desulfurization unit with a communication path that supports the desulfurization agent, including a discharge-side vertical path, a horizontal support path, and a suction-side vertical path, ensuring air permeability and preventing blockage of the discharge portion, even when the agent is crushed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the desulfurization agent is placed directly in the discharge path, then the discharge portion can effectively remove hydrogen sulfide gas, but the discharge portion may be blocked when the agent is crushed due to vibration
Solution Approach 1:
The communication path is divided into three distinct segments: a discharge-side vertical path extending downward from the discharge portion, a horizontal support path supporting the desulfurization agent, and a suction-side vertical path extending upward to the case interior. This segmentation separates the discharge function from the desulfurization agent containment, allowing gas to flow through the vertical paths while the agent remains supported on the horizontal path, preventing blockage of the discharge portion even when the agent is crushed by vibration
Solution Approach 2:
The horizontal support path acts as an intermediary structure between the discharge-side vertical path and the suction-side vertical path. It supports the desulfurization agent while maintaining open vertical channels for gas flow, serving as a mediator that enables desulfurization functionality without allowing the agent to directly obstruct the discharge path
2Device complexity
If the desulfurization agent is contained in a compact structure, then the device complexity is reduced, but air permeability may be compromised leading to blockage
Solution Approach 1:
The communication path utilizes three-dimensional spatial arrangement with vertical and horizontal components. The discharge-side vertical path extends downward, the support path extends horizontally, and the suction-side vertical path extends upward, creating a three-dimensional configuration that ensures air permeability while maintaining compact overall structure. This dimensional arrangement prevents crushed agent particles from blocking the discharge path
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 effectively reduces blockage of the discharge portion and maintains desulfurization efficiency by ensuring air permeability and minimizing high hydrogen sulfide gas concentration within the desulfurization unit.
Implementation Method 1
a desulfurization agent, and a communication path that contains the desulfurization agent and that allows inside of the case to communicate with the discharge portion
Data Source
AI summary
An energy storage device includes a plurality of energy storage cells, a case, and a desulfurization unit. The case includes a top wall, and the top wall includes a discharge portion that discharges gas from inside the case to outside the case. The desulfurization unit includes a desulfurization agent and a communication path that contains the desulfurization agent and that allows the inside of the case to communicate with the discharge portion. The communication path includes a discharge-side vertical path extending downward from the discharge portion, a support path extending horizontally from a lower end of the discharge-side vertical path and supporting the desulfurization agent, and a suction-side vertical path extending upward from an end of the support path and opening into the case.