Battery Pack Case With Independent Air Passages for Thermal Isolation
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Solution Overview
Problem
Heat spread easily occurs among battery cell units in a battery pack, leading to thermal runaway and affecting thermal management, as they are connected through a common heat dissipation passage, causing thermal spread and thermal runaway to affect other normal battery cells.
Innovation Solution
A battery pack case with an accommodating space and multiple independent air passages allows each battery cell unit to communicate with the outside through separate passages, ensuring that thermal runaway in one unit does not affect others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common heat dissipation passage is used for multiple battery cell units, then the device complexity is reduced, but heat spread and thermal runaway occur more easily affecting other battery cells
Solution Approach 1:
The patent divides the common heat dissipation passage into multiple independent air passages, with each passage dedicated to a specific battery cell unit. This segmentation prevents heat spread between cells while maintaining manageable structural complexity through systematic arrangement of the divided passages.
2Reliability
If independent air passages are provided for each battery cell unit, then thermal runaway is prevented from spreading, but the device complexity increases
Solution Approach 1:
The patent implements segmentation by creating separate air passages for each battery cell unit, ensuring thermal isolation. The complexity is managed by arranging these passages in an organized manner within the battery pack structure, with each passage directly connected to its corresponding cell unit.
Solution Approach 2:
The patent applies local quality by providing customized air passage configurations for different battery cell units based on their specific thermal management needs. Each cell unit has its own dedicated passage system, allowing localized thermal control without affecting other cells.
3Volume of moving object
If battery cell units are arranged in an accommodating space, then space utilization is improved, but heat spread occurs through the common passage affecting thermal runaway
Solution Approach 1:
The patent segments the heat dissipation system into independent air passages for each battery cell unit while maintaining compact arrangement in the accommodating space. This segmentation creates thermal barriers that prevent heat spread, allowing efficient space utilization without compromising thermal safety.
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
This design prevents heat spread and thermal runaway by isolating each battery cell unit's heat dissipation, maintaining the thermal management of the entire battery pack and ensuring the reliability of individual cell units.
Implementation Method 1
a plurality of first air passages, which are mutually independent, are arranged in the battery pack case wherein the battery cell of the plurality of battery cell units is suitable for communicating with the outside of the battery pack through the separate first air passage
Data Source
AI summary
A battery pack case includes an accommodating space for accommodating a plurality of battery cells; a plurality of mutually independent first air passages are provided in the battery pack case, wherein the cells of a plurality of battery cell units are suitable for communicating with the outside of the battery pack through separate first air passages. A battery pack includes a batter pack case and a plurality of batter cell units wherein each battery cell of the plurality of battery cell units communicates with the outside of the battery pack through a separate first air passage and a plurality of battery cell units are provided in the accommodating space.