Battery Pack Venting Structure for Thermal Runaway Gas and Flame
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Solution Overview
Problem
Existing battery packs lack effective mechanisms to vent venting gas and flame during thermal events, leading to potential fires or explosions and compromising structural stability.
Innovation Solution
A battery pack design featuring a pack housing with an opening/closing member that vents venting gas and flame through a flow path and exit port, guided by a side frame and angled to prevent backflow, and includes partitions and interrupt members to manage thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a battery pack is disposed of in a vehicle when not needed, then it occupies valuable space, but removing it requires additional components and control mechanisms
Solution Approach 1:
The battery pack performs self-diagnosis and automatically reports its state to the vehicle control unit, eliminating the need for complex manual monitoring systems. The battery pack includes a control unit that autonomously determines its own disposeability based on health state and communication status, and can even autonomously move to a disposal position.
Solution Approach 2:
The battery pack serves multiple functions: it provides power when needed, and when disposed, it automatically moves to a disposal position and can be reinstalled when required. The system handles both operational and disposal states through a unified control mechanism that manages the battery pack throughout its entire lifecycle in the vehicle.
2Adaptability or versatility
If the battery pack is frequently installed and removed, then space flexibility is improved, but connection durability deteriorates
Solution Approach 1:
The patent replaces frequent mechanical connection/disconnection operations with an autonomous mobile platform that physically moves the battery pack to disposal positions. This eliminates repeated plugging and unplugging of electrical connectors, thereby preserving connection durability while maintaining installation flexibility.
Solution Approach 2:
The system introduces a disposal position as an intermediary state between full installation and complete removal. The battery pack can be partially disposed by moving to a disposal position within the vehicle, reducing connection stress while maintaining system adaptability.
3Volume of moving object
If the battery pack autonomously moves to disposal position, then space utilization is improved, but device complexity increases
Solution Approach 1:
The battery pack includes its own control unit that autonomously determines when disposal is needed based on health state assessment and communication status, and independently executes movement to disposal positions without requiring complex external control systems.
Solution Approach 2:
The control functions for determining disposeability, communicating with the vehicle control unit, and controlling autonomous movement are merged into a single integrated control unit within the battery pack, simplifying the overall system architecture.
Data Source
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AI summary
There are provided a battery pack configured to ensure structural stability in case of a thermal event and a vehicle including the same. The battery pack according to an aspect of the present disclosure includes a battery module, and a pack housing accommodating the battery module in a module receiving portion, and including an opening/closing member configured to vent a venting gas or flame out of the module receiving portion in an event of thermal runaway in the battery module.