Battery Cell Stack Cooling Plate for Lateral Impact Absorption
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Solution Overview
Problem
Electric vehicles face challenges in reducing the impact transmitted to battery cells when subjected to lateral side impacts, which can compromise the safety and integrity of the battery pack.
Innovation Solution
A battery pack design incorporating a base plate with integrated cooling and impact-absorbing parts, including a protruding impact-absorbing part that mitigates the transmission of side impacts through a side member, maintaining cooling efficiency while enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If battery cells are accommodated in the interior of the battery housing in the form of cell to pack (CTP) rather than in the form of modules, then the capacity of battery cells is improved, but the degree of impact transmitted to the battery cells increases when lateral side impact is applied
Solution Approach 1:
The patent applies beforehand cushioning by incorporating an impact absorbing part that protrudes from the cooling part and contacts the side member before impact occurs. This protruding structure is pre-positioned to absorb lateral impacts before they can be transmitted to the battery cells, thus protecting the cells while maintaining the CTP configuration that maximizes capacity.
Solution Approach 2:
The cooling part with its protruding impact absorbing part serves as an intermediary between the side member and the battery cells. When lateral impact occurs, the protruding portion absorbs the impact force, acting as a mediator that prevents direct transmission of impact to the battery cells while still allowing the cooling function to operate effectively.
2Temperature
If a plate structure is used to cool battery cells, then cooling efficiency is improved, but impact absorption capability against lateral side impacts is insufficient
Solution Approach 1:
The patent applies dynamics by designing the cooling part with a protruding impact absorbing part that can deform or bend when lateral impact occurs. This dynamic structure allows the cooling plate to adapt to impact forces, absorbing energy through deformation while maintaining its cooling function, thus improving both cooling efficiency and impact absorption capability.
Solution Approach 2:
The patent changes the structural parameters of the cooling part by adding a protruding impact absorbing portion with specific geometric features. This parameter change transforms the rigid cooling plate into a structure that can absorb impact through controlled deformation, thereby enhancing impact absorption capability while preserving cooling efficiency.
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 the impact transmitted to battery cells, ensuring maximum capacity and safety by absorbing and distributing side impacts, thus improving the overall safety and performance of the battery pack.
Implementation Method 1
an impact absorbing part bent from the cooling part and disposed between the battery cells and the side member
Implementation Method 2
reduces a degree of an impact transmitted to battery cells, in an amount of an impact applied to the battery pack
Implementation Method 3
a cooling part disposed between the battery cells and an impact absorbing part bent from the cooling part
Data Source
AI summary
A battery pack includes a base plate, battery cells supported by the base plate, extending in a first direction, and arranged in a second direction crossing the first direction, a side member supported by the base plate and disposed on one side of the battery cells in the first direction, and a plate including a portion disposed between adjacent battery cells of the battery cells and in contact with the battery cells and a partial area disposed between the battery cells and the side member and in contact with the side member.