Electrode Drying Heat Control After Oven Standby
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge is to prevent overdrying and subsequent cracking of electrode sheets during the initial drying process in secondary battery manufacturing, which occurs due to surplus heat accumulated in the oven during standby times, leading to electrode powder generation and contamination.
Innovation Solution
An electrode drying system that includes a controller to adjust the heat supply based on drying standby time, reducing heat input during the initial drying phase and gradually increasing it, using a combination of hot air and radiant heat, and sensors to monitor the drying process, ensuring uniform heat distribution across the oven.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the oven operates with drying standby time when electrode sheet is not supplied, then heat is accumulated in the oven, but this causes overdrying and cracking when electrode sheet is supplied
Solution Approach 1:
The patent implements dynamic heat supply control by adjusting the heat input based on whether the oven is in standby mode or actively drying. The controller dynamically modifies heating power to prevent heat accumulation during standby while ensuring adequate heat supply during active drying, thereby resolving the contradiction between energy efficiency and drying quality.
Solution Approach 2:
The patent changes the heat supply parameter based on the operational state of the oven. By detecting standby conditions and adjusting the heat supply parameter accordingly (reducing heat input during standby, maintaining normal heat input during active drying), the system prevents overdrying while optimizing energy usage.
2Productivity
If heat is supplied to dry electrode sheet quickly, then drying efficiency is improved, but this causes overdrying and generates electrode powder
Solution Approach 1:
The patent implements periodic or staged heat supply during the drying process. Instead of continuous high-intensity heating, the system uses controlled heat supply phases that prevent sudden overdrying, thereby maintaining drying efficiency while avoiding electrode powder generation caused by excessive rapid drying.
Solution Approach 2:
The patent employs feedback control mechanisms to monitor the drying process and adjust heat supply accordingly. By detecting the drying state and providing feedback to the heat supply controller, the system maintains optimal drying efficiency while preventing overdrying conditions that would generate electrode powder.
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 approach effectively suppresses overdrying, prevents electrode cracking, and reduces manufacturing costs by optimizing heat usage, resulting in improved electrode quality and reduced contamination within the oven.
Implementation Method 1
an oven which applies hot air and radiant heat to an electrode sheet
Implementation Method 2
an oven which applies hot air and radiant heat to an electrode sheet
Implementation Method 3
determines and controls an amount of heat supplied into the oven according to a length of the drying standby time
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present technology relates to a system for drying an electrode, and the system includes: an oven which applies hot air and radiant heat to an electrode sheet; and a controller which receives information on drying standby time, and controls an amount of heat supplied into the oven. Herein, the controller controls to supply a reduced amount of heat to the oven during an initial drying time right after the supply of the electrode sheet after the drying standby time.