Electrode Rolling Temperature Control via Local Quality and Feedback
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Solution Overview
Problem
Existing electrode rolling systems face issues with uneven temperature distribution and loss in rolling rolls, leading to inefficient rolling, electrode swell, and thickness variations due to non-uniform pressure and temperature control.
Innovation Solution
An electrode rolling system with a temperature adjustment device, sensor, and control device to regulate the rolling roll temperature using fluid circulation, heating/cooling units, and preheating, ensuring uniform temperature maintenance during rolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the temperature of the rolling roll is maintained at a seriously high level to maintain the surface temperature sufficiently high, then the surface temperature of the rolling roll is maintained, but wrinkles occur in the uncoated portion of the electrode
Solution Approach 1:
The patent applies local quality by differentiating temperature control across different regions of the rolling roll. The rolling roll is divided into a contact region (where electrode contact occurs) and a non-contact region. Temperature control is optimized locally: the contact region maintains higher temperature for efficient rolling, while the non-contact region uses reflective films to prevent excessive heat accumulation that causes wrinkles. This spatial differentiation of thermal properties resolves the contradiction between maintaining surface temperature and preventing electrode damage.
Solution Approach 2:
The patent introduces reflective films as intermediary elements on the non-contact portion of the rolling roll. These films act as thermal mediators that reflect radiant heat away from the electrode's uncoated portions, preventing the harmful thermal effects (wrinkles) while allowing the contact region to maintain necessary temperatures for efficient rolling. The reflective film serves as a protective intermediary between the heat source and the vulnerable electrode surface.
2Temperature
If the surface temperature of the rolling roll decreases due to heat loss, then the rolling roll temperature is reduced, but the electrode cannot be pressed efficiently and pressure distribution becomes uneven
Solution Approach 1:
The patent applies preliminary action by pre-heating the rolling roll before electrode rolling begins. The temperature control system activates heating elements in advance to bring the rolling roll to the optimal temperature range, ensuring that when rolling starts, the surface temperature is already sufficient for efficient pressing. This prevents temperature loss from compromising rolling efficiency and thickness uniformity from the outset.
Solution Approach 2:
The patent implements feedback control through temperature sensors that continuously monitor the rolling roll surface temperature. The control system receives real-time temperature data and adjusts heating or cooling operations accordingly to maintain temperature within the optimal range. This closed-loop feedback ensures that temperature loss is compensated promptly, preventing uneven pressure distribution and thickness variations in the rolled electrode.
3Temperature
If temperature loss occurs in the rolling roll, then the rolling roll temperature decreases, but the pressure cannot be transmitted evenly across the electrode width
Solution Approach 1:
The patent uses feedback control with temperature sensors positioned across the rolling roll surface to detect temperature variations. When temperature loss occurs in specific regions, the control system adjusts heating elements in those zones to maintain uniform temperature distribution. This ensures even thermal conditions across the rolling surface, which directly translates to uniform pressure transmission and prevents localized defects in the electrode.
Solution Approach 2:
The patent applies local quality by providing differentiated temperature control across different zones of the rolling roll. Heating elements and temperature sensors are distributed across the rolling surface to address local temperature variations. This localized thermal management ensures that each region of the rolling roll maintains appropriate temperature for uniform pressure application, preventing the pressure distribution problems that arise from thermal non-uniformity.
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 system effectively maintains optimal rolling temperatures, minimizing temperature loss and ensuring consistent electrode thickness and quality by controlling temperature deviations and preventing damage.
Implementation Method 1
The temperature adjustment device may be configured to regulate the temperature of the rolling device by circulating a fluid
Implementation Method 2
The temperature adjustment device may include a heating wire built in the rolling device
Implementation Method 3
The preheating device may be configured to preheat the electrode by a NIR heating method
Data Source
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AI summary
Disclosed is an electrode rolling system, which includes a rolling device configured to roll an electrode; a temperature adjustment device configured to heat or cool the rolling device; a temperature sensor configured to measure a temperature of the rolling device; and a control device configured to control the temperature adjustment device according to the temperature of the rolling device measured by the temperature sensor.