Roll Press Heat Exchange Control for Uniform Electrode Thickness
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Solution Overview
Problem
The thickness consistency of rolled electrode plates in power battery production is poor due to inconsistent roll gaps between rollers, leading to performance and consistency issues in power batteries.
Innovation Solution
A rolling device with a heat exchange assembly and adjustment assembly that adjusts the temperature of the rolling surface along the axial direction of the roller, utilizing thermal expansion and contraction principles to maintain consistent roll gaps, and includes a dust removal mechanism to clean the surface, ensuring uniform thickness and improved battery performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter is disposed in a roll press system, then liquid effluent can be separated and recycled, but the filter becomes clogged with captured liquids and requires frequent cleaning or replacement
Solution Approach 1:
A receiving container is introduced as an intermediary component between the filter and the environment. The container collects liquids that pass through the filter, preventing direct contact between the filter and the accumulated liquid. This mediator allows the filter to continue functioning without being immediately clogged, extending its operational life before cleaning or replacement is needed.
Solution Approach 2:
The roll press system is divided into separate functional components: the filter, the receiving container, and the roll press mechanism. This segmentation allows the receiving container to be independently removed, emptied, and replaced without affecting the filter or requiring system shutdown. The separation of functions enables maintenance of one component without impacting others.
2Ease of manufacture
If the roll press device is stationary, then it occupies fixed space, but it cannot be easily moved or repositioned
Solution Approach 1:
The roll press device incorporates a wheeled base with locking mechanisms, allowing it to transition between a mobile state (wheels engaged) and a stationary state (locks engaged). This dynamic design enables the device to be easily moved to different locations when needed, then securely locked in place during operation to maintain stability and prevent accidental movement.
3Ease of operation
If manual operation is used, then the device is simple to operate, but it requires significant physical effort and is time-consuming
Solution Approach 1:
The manual crank mechanism is replaced with an electric motor that drives the roll press through a transmission system. This substitution eliminates the need for manual physical effort while maintaining the mechanical pressing action. The motorized system can be controlled with a simple switch or button, preserving ease of operation while dramatically increasing processing speed and productivity.
4Device complexity
If the receiving container is permanently attached, then the structure is simple, but the filter cannot be accessed for cleaning without removing the container
Solution Approach 1:
The receiving container is designed as a separable component that can be independently removed from the filter assembly. This segmentation allows the container to be detached, emptied, and replaced without affecting the filter or requiring system disassembly. The simple connection interface maintains structural simplicity while enabling easy filter maintenance.
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 solution ensures consistent roll gaps and improved thickness uniformity of rolled electrode plates, enhancing the performance and consistency of power batteries by maintaining precise temperature control and surface cleanliness.
Implementation Method 1
a filter may be disposed in a roll press system... the filter may become clogged with captured liquids
Implementation Method 2
Roll press device and roll press system... designed to be simple to operate but effective
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A roll press device (10) comprises a roll (100), a heat exchange assembly (200) and an adjustment assembly (300). The roll is provided with a roll press surface (110) for rolling a target workpiece. The heat exchange assembly is opposite to the roll press surface and used for adjusting the temperature of the roll press surface. The adjustment assembly is connected to the heat exchange assembly and used for adjusting the position of the heat exchange assembly in the axial direction of the roll so as to adjust the temperature of the roll press surface of the roll in different areas in the axial direction. A roll press system comprises the roll press device, a measuring device (20) and a controller (30). The measuring device is used for measuring the thickness of the rolled target workpiece (500), and is in communication connection with the measuring device and the adjusting assembly. Different areas of the roll press surface in the axial direction expand when heated or contract when cooled according to the principle of thermal expansion and contraction, such that the roll gaps in the axial direction of the roll are consistent during rolling, and the thickness of the target workpiece is more consistent.