Battery Pack Pressure Release Mechanism with Labyrinth Gas Discharge
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Solution Overview
Problem
Existing battery pack designs with complex structures to prevent water infiltration from gas discharge valves increase manufacturing costs, necessitating a simpler yet effective solution.
Innovation Solution
A battery pack with a pressure release mechanism featuring a communication member connected to a gas discharge unit with a labyrinth structure, where the gas discharge unit is positioned to face upward and behind the battery case, forming a labyrinth structure that prevents water infiltration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a check valve or cylinder structure is provided to prevent water from entering the gas discharge valve, then water infiltration prevention is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
A communication member (tube) is introduced as an intermediary between the case and the gas discharge valve. This tube extends from the case to a position above the case, creating a path that prevents water from directly reaching the gas discharge valve while still allowing gas to escape during overpressure events.
Solution Approach 2:
The communication member extends vertically above the case in the up-down direction, changing the spatial arrangement from a horizontal or inline configuration to a vertical extension. This dimensional change allows the gas discharge valve to be positioned above the case, away from water exposure, while maintaining pressure release functionality.
2Object-affected harmful factors
If a check valve or cylinder structure is provided to prevent water from entering the gas discharge valve, then water infiltration prevention is improved, but manufacturing cost increases
Solution Approach 1:
A communication member (tube) is introduced as an intermediary between the case and the gas discharge valve. This tube extends from the case to a position above the case, creating a path that prevents water from directly reaching the gas discharge valve while still allowing gas to escape during overpressure events.
Solution Approach 2:
The communication member extends vertically above the case in the up-down direction, changing the spatial arrangement from a horizontal or inline configuration to a vertical extension. This dimensional change allows the gas discharge valve to be positioned above the case, away from water exposure, while maintaining pressure release functionality.
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 labyrinth structure in the gas discharge unit effectively suppresses water infiltration into the battery pack, reducing manufacturing costs while maintaining effective pressure release, and the gas discharge ports' placement minimizes gas influence on the passenger compartment.
Implementation Method 1
a gas discharge unit connected to the other end of the communication member and having a labyrinth structure
Data Source
AI summary
A battery pack which is placed below a floor panel of a vehicle, includes a battery, a case for accommodating the battery, and a pressure release mechanism for releasing pressure inside the case. The pressure release mechanism includes a communication member which has one end and the other end and where the one end is connected to the case, and a gas discharge unit connected to the other end of the communication member and having a labyrinth structure.