Battery Pack Cooling Plate With Vent Protrusions for Heat Containment
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Solution Overview
Problem
Existing battery packs face challenges in preventing heat propagation from one battery cell to another and in avoiding casing sagging, especially when a predetermined event occurs in one of the battery cells.
Innovation Solution
A battery pack design that includes a plurality of battery cells with vents, a cover member, and a cooling plate with vent protruding portions and a flange portion. The cooling plate is in contact with the cover member and includes features that guide gases away from adjacent cells, thereby reducing heat transfer and preventing casing sagging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cooling plate is added to reduce heat propagation between battery cells, then thermal safety is improved, but device complexity increases
Solution Approach 1:
The cooling plate is designed to serve multiple functions: it provides thermal management by contacting the vents of adjacent battery cells to reduce heat propagation, and simultaneously provides mechanical support to prevent sagging of the cover member. This multi-functionality resolves the contradiction by improving thermal safety without proportionally increasing device complexity.
Solution Approach 2:
The cooling plate merges the thermal management function and structural support function into a single integrated component. By combining these functions that were previously separate, the design improves thermal safety while avoiding the complexity increase that would result from adding separate components for each function.
2Reliability
If vent protruding portions are designed to guide gases away from adjacent cells, then heat propagation is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The cooling plate features localized vent protruding portions positioned specifically at areas corresponding to the vents of adjacent battery cells. This local quality approach concentrates the heat propagation control function at specific critical locations rather than requiring uniform precision across the entire cooling plate, thereby reducing overall manufacturing precision requirements while maintaining effective heat management.
3Stability of the object's composition
If a flange portion is added to prevent casing sagging, then structural stability is improved, but device complexity increases
Solution Approach 1:
The flange portion of the cooling plate serves dual purposes: it provides structural support to prevent sagging of the cover member, and it maintains the positioning of the cooling plate relative to the battery cells. By combining structural stability and component positioning functions in one feature, the design improves casing stability without proportionally increasing device complexity.
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 proposed design effectively reduces heat propagation between battery cells and prevents casing sagging by utilizing the cooling plate's vent protruding portions and flange portion to manage heat and gas discharge efficiently.
Implementation Method 1
a cooling plate, which is located in an area in which the vents are located and is in contact with the cover member
Implementation Method 2
the cooling plate includes vent protruding portions located corresponding to the vents and protruding in a direction opposite the cover member
Data Source
AI summary
A battery pack capable of, upon occurrence of an event in a certain battery cell, reducing propagation of heat to a cell adjacent thereto and capable of preventing or substantially preventing sagging of a casing is provided. A battery pack includes a plurality of battery cells including vents, each of which is located in a surface of a respective one of the plurality of battery cells, a cover member configured to accommodate the plurality of battery cells, and a cooling plate, which is located in an area in which the vents are located and is in contact with the cover member. The cooling plate includes vent protruding portions located corresponding to the vents and protruding in a direction opposite the cover member.