Battery Top-Wall Cooling Channel Protection Against Impact Deformation
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Solution Overview
Problem
Existing battery technologies face challenges in improving reliability due to issues such as deformation, leakage, and uneven heat exchange, particularly when subjected to external impacts or thermal runaway, which can lead to safety hazards.
Innovation Solution
A battery design incorporating a protection plate on the upper side of the case with a flow channel, reinforced by a beam structure, and integrated heat exchange plate, which reduces impact forces and enhances heat exchange uniformity, while integrating components to improve strength and space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flow channel is formed in the lower side of the case, then heat exchange can be performed, but the flow channel is easily deformed when the lower side is subjected to external impact
Solution Approach 1:
The patent introduces a protection plate as an intermediary component between the external environment and the flow channel. This protection plate absorbs and distributes external impact forces, preventing direct transmission to the flow channel formed in the lower side of the case, thereby resolving the contradiction between heat exchange functionality and impact resistance
2Reliability
If the protection plate is added to protect the top wall, then the top wall deformation is reduced, but the device complexity increases
Solution Approach 1:
The protection plate is designed to serve multiple functions: it protects the top wall from deformation, provides a mounting surface for the reinforcing structure, and contributes to the overall structural integrity of the battery case. By making the protection plate multi-functional, the patent reduces device complexity despite adding a protective component
3Strength
If the reinforcing structure is added to the protection plate, then the overall strength is improved, but the weight increases
Solution Approach 1:
The reinforcing structure is segmented into discrete elements (such as ribs or beams) that are strategically positioned only where structural support is most needed. This segmentation allows the protection plate to achieve high strength-to-weight ratio by concentrating material only in critical areas rather than uniformly throughout the entire plate
4Device complexity
If the heat exchange plate is integrated into the case, then the number of parts is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The heat exchange plate is merged with the case to form an integrated structure, reducing the number of separate parts. The patent addresses manufacturing precision challenges by designing features such as integrated ribs or bosses that serve both structural and heat exchange functions, allowing single-step molding or forming processes that reduce assembly requirements while maintaining precise thermal contact
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 enhances battery reliability by reducing deformation, leakage risk, and improving heat exchange uniformity, while simplifying assembly and increasing energy density and integration level.
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
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AI summary
The present application provides 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. 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, thereby reducing deformation of the top wall, improving the uniformity of heat exchange, reducing the risk of heat exchange medium leakage, and improving the reliability of the battery.