Rotating Battery Pressing Member for Surface Flatness Control
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Solution Overview
Problem
Existing battery pressurizing devices struggle to achieve consistent pressure and flatness across uneven battery surfaces, leading to potential damage and inefficiencies in battery assembly.
Innovation Solution
A battery pressurizing device with a rotatable pressurizing member that rollably abuts against the battery, allowing for line or point contact rather than plane contact, thereby reducing friction and accommodating varying surface protrusions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pressurizing component applies pressure in one direction to compress the battery, then the battery achieves the specified size, but the surfaces of the battery in other directions become deformed and lose flatness
Solution Approach 1:
The pressurizing member is divided into multiple independent pressing elements (rollers or pressing blocks) that can independently contact and press different regions of the battery surface. This segmentation allows each element to adapt to local surface variations while collectively maintaining overall flatness and applying consistent pressure for precise compression.
Solution Approach 2:
The pressurizing member uses rollers with curved surfaces instead of flat pressing surfaces. The cylindrical shape of the rollers allows them to naturally conform to uneven battery surfaces through line or point contact, accommodating surface protrusions and depressions while maintaining consistent pressing force and achieving both size precision and surface flatness.
2Force
If a fixed pressurizing member applies pressure to an uneven battery surface, then pressure is applied, but the pressure distribution is inconsistent and the battery surface cannot be flattened uniformly
Solution Approach 1:
The pressurizing member is designed to be movable and rotatable rather than fixed. The rollers can rotate to adapt to surface irregularities and move to distribute pressure evenly across the battery surface. This dynamic capability allows the pressing elements to self-adjust to maintain consistent pressure distribution despite variations in battery surface topology.
Solution Approach 2:
The pressing elements can change their contact parameters (contact area, contact point position) in response to surface variations. By adjusting the effective pressing parameters through rotation and movement, the system maintains consistent pressure application across uneven surfaces, achieving uniform flattening and consistent pressure distribution.
3Force
If a pressurizing member with large contact area is used, then pressure is applied over the entire surface, but friction increases and may damage the battery surface
Solution Approach 1:
The rollers have curved surfaces that naturally reduce contact area to lines or points when contacting the battery surface. This curvature minimizes the contact area between the pressurizing member and battery, thereby reducing friction and the risk of surface damage while still effectively applying pressing force to achieve flattening.
Solution Approach 2:
The system replaces sliding friction with rolling friction by using rotatable rollers instead of fixed pressing surfaces. This substitution significantly reduces the friction coefficient and prevents battery surface damage while maintaining effective pressurizing force distribution across the battery.
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 device effectively maintains consistent pressure while flattening battery surfaces without causing damage, improving compatibility with different battery surface profiles and reducing the risk of battery damage.
Implementation Method 1
the pressurizing member rollably abuts against the battery along the first direction and pressurizes the battery
Implementation Method 2
the surface of the pressurizing member is made of an elastic insulating material. The elasticity of the elastic insulating material can avoid damage to the battery
Data Source
Figure 1~2
Figure 3~4
Figure 5A~5B
AI summary
The present application relates to a battery pressurizing device, the battery pressurizing device comprising: a carrying mechanism for carrying a battery; and a pressurizing mechanism movable relative to the carrying mechanism, wherein the pressurizing mechanism includes a mounting member and a pressurizing member, the pressurizing member is arranged on the mounting member and is rotatable relative to the mounting member, the pressurizing member is used to abut against the battery along a first direction to apply pressure on the battery. The battery pressurizing device can flatten the surface of the battery and also prevent the protrusions of battery cells and/or the damages of battery terminals when pressurizing in other directions.