Battery Top Wall Cooling Structure With Impact Protection
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Solution Overview
Problem
Existing battery technologies face challenges in improving reliability, particularly in scenarios where the heat exchange plate is prone to damage from external impacts and uneven heat exchange, leading to potential leakage and reduced energy density.
Innovation Solution
The integration of a protection plate on the upper side of the battery case, combined with a reinforcing structure, reduces impact forces on the heat exchange system, enhances structural integrity, and improves heat exchange uniformity, while integrating components like the heat exchange plate into the case wall to simplify the structure and increase energy density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the heat exchange plate is integrated into the case wall, then the number of parts is reduced and energy density is increased, but the heat exchange plate becomes more vulnerable to external impacts
Solution Approach 1:
The heat exchange plate is integrated into the case wall structure, merging two previously separate components (heat exchange plate and case wall) into a single unified structure. This reduces the number of parts and simplifies assembly while maintaining heat exchange functionality.
Solution Approach 2:
A protection plate is added on the outer surface of the case wall to provide beforehand cushioning against external impacts. This protection plate absorbs impact forces before they reach the integrated heat exchange plate, preventing damage while allowing the heat exchange plate to remain integrated with the case wall.
2Reliability
If the protection plate is added to protect the top wall, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The protection plate is integrated with the case wall structure through connection structures, merging two separate components into a unified assembly. This reduces the number of discrete parts that need to be managed during assembly and maintenance while maintaining the protective function.
Solution Approach 2:
The protection plate serves multiple functions: it protects the top wall from external impacts, provides a mounting surface for connection structures, and maintains structural integrity of the battery housing. This multi-functionality justifies the addition by providing multiple benefits from a single component.
3Strength
If the reinforcing structure is added to the protection plate, then the structural integrity is improved, but the weight and complexity increase
Solution Approach 1:
The reinforcing structure is divided into multiple discrete reinforcement pieces that are strategically positioned at high-stress areas of the protection plate. This segmentation allows strength to be added only where needed rather than uniformly across the entire plate, reducing unnecessary weight while maintaining structural integrity.
Solution Approach 2:
The reinforcement is applied locally at specific high-stress regions of the protection plate rather than uniformly across the entire structure. This local quality approach ensures that additional weight is only added where structurally necessary, optimizing the strength-to-weight ratio.
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 enhances battery reliability by minimizing deformation and leakage risks, improves heat exchange uniformity, and increases energy density by reducing the number of parts and simplifying assembly processes.
Implementation Method 1
the top wall is internally provided with a flow channel for a heat exchange medium to flow
Implementation Method 2
The protection plate can protect the top wall from the upper side, so as to reduce the impact force on the top wall applied from the upper side
Implementation Method 3
The beam structure possesses high strength and thus can reduce the deformation of the protection plate when the protection plate is subjected to an external impact
Data Source
AI summary
A battery and an electric device. The battery comprises a case, battery cells and a protection plate. The case has an accommodating cavity. The case comprises a top wall, the top wall is located on the upper side of the accommodating cavity in the vertical direction, and a flow channel for a heat exchange medium to flow is formed in the top wall. The battery cells are accommodated in the accommodating cavity. The protection plate is provided on the side of the top wall distant from the battery cells and is connected to the top wall.