Electrode Drying Oven Recirculation for Consistent Humidity
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Solution Overview
Problem
Conventional electrode drying systems waste energy by discharging high-temperature air and moisture outside, leading to inefficiency and potential quality deviations due to seasonal temperature and humidity changes.
Innovation Solution
An electrode drying system that recycles at least part of the discharged air by connecting the ventilation and air supply members, using sensors and control members to manage humidity and temperature, and incorporating a vent member to control airflow, thereby reusing high-temperature and humid air to improve energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If high-temperature air is discharged to the outside through the exhaust fan, then the drying function is achieved, but a large amount of energy is wasted
Solution Approach 1:
The patent recovers the high-temperature air that would otherwise be discarded through the exhaust fan by redirecting it through a recirculation duct back to the air supply fan, thereby recovering thermal energy and reducing overall energy consumption while maintaining drying effectiveness
Solution Approach 2:
The patent converts the harmful effect of high-temperature air discharge (energy waste) into a beneficial effect by using the recirculated hot air to pre-heat incoming air, transforming what was previously a loss into a heat source that improves energy efficiency
2Productivity
If high-temperature and humid air is discharged outside, then drying is completed, but energy efficiency deteriorates
Solution Approach 1:
The patent establishes continuous recirculation of heated air through the system, maintaining continuous useful thermal action on the electrodes while reducing the need for continuous external heating, thereby improving energy efficiency without compromising drying productivity
Solution Approach 2:
The recirculated air serves multiple functions: it continues to dry electrodes, pre-heats incoming air, and reduces the load on the heating system, demonstrating multi-functionality that improves both productivity and energy efficiency
3Manufacturing precision
If air humidity is not controlled, then system complexity is reduced, but drying quality varies with seasonal changes
Solution Approach 1:
The patent introduces a humidity sensor that detects air humidity levels and provides feedback to the control member, which then adjusts the recirculation valve to maintain optimal humidity levels, ensuring consistent drying quality while using a relatively simple feedback mechanism
Solution Approach 2:
The system uses the recirculated humid air itself to maintain the required humidity levels in the drying chamber, allowing the process to be self-regulating to some extent and reducing the need for complex external humidification systems
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 reuses high-temperature and humid air to reduce energy consumption and maintain consistent drying conditions, enhancing energy efficiency and electrode quality by minimizing waste and adjusting to seasonal changes.
Implementation Method 1
a heater configured to heat air according to a temperature, and a control member configured to control the heater according to a temperature detected by the temperature sensor
Implementation Method 2
a humidifying member provided to humidify air according to a humidity, and a control member configured to control the humidifying member according to a humidity detected by the humidity sensor
Implementation Method 3
a drying oven configured to dry a solvent in an electrode active material slurry on an electrode sheet
Data Source
AI summary
An electrode drying system includes a drying oven configured to dry a solvent in an electrode active material slurry on an electrode sheet in which the electrode active material slurry is applied to a current collector, an air supply member configured to supply air to the drying oven, and a ventilation member configured to discharge air from the drying oven. At least part of the air discharged from the ventilation member is introduced into the air supply member again.