Infrared Electrode Heating for Wrinkle-Free Battery Preheating
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Solution Overview
Problem
The formation of wrinkles on electrodes during the heating process and temperature inconsistencies due to equipment operation speed and electrode type in secondary battery manufacturing, along with high nip pressure, are unresolved issues in existing pre-heating methods.
Innovation Solution
An electrode heating device comprising heating lamps, a heating chamber, and a control module to adjust temperature, distance, and nip pressure, utilizing infrared lamps and pneumatic cylinders to maintain consistent electrode heating without direct contact, and an exhaust device to manage moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a roll press is used for pre-heating the electrode, then the electrode can be heated, but wrinkles form on the electrode due to temperature differences caused by equipment operation speed and electrode type
Solution Approach 1:
The patent replaces the mechanical roll press heating system with a non-contact infrared heating system. The infrared heater applies thermal energy directly to the electrode without mechanical contact, eliminating the nip pressure that causes wrinkles while maintaining effective heating. This substitution of mechanical heating with radiant heating resolves the contradiction between achieving temperature rise and maintaining surface quality.
Solution Approach 2:
The patent introduces infrared radiation as an intermediary medium to transfer thermal energy to the electrode. Instead of direct mechanical contact through rollers, the infrared heater acts as an intermediary that delivers heat energy through radiation, allowing temperature control without the harmful mechanical pressure that causes surface defects.
2Temperature
If a roll press is used for pre-heating, then heating can be performed, but high nip pressure is applied to the electrode
Solution Approach 1:
The patent replaces the mechanical roll press system that applies high nip pressure with a non-contact infrared heating system. The infrared heater transfers thermal energy through radiation without requiring mechanical contact, thereby completely eliminating or significantly reducing the nip pressure applied to the electrode while still achieving the required heating effect.
Solution Approach 2:
The patent extracts the heating function from the mechanical roll press system and separates it from the mechanical contact component. By using infrared radiation for heating, the harmful nip pressure is removed from the process while retaining the essential heating capability, thus resolving the contradiction between temperature rise and pressure reduction.
3Temperature
If roll press heating is used, then the electrode can be pre-heated, but temperature differences occur depending on equipment operation speed and electrode type
Solution Approach 1:
The patent replaces the mechanical roll press heating system with an infrared heating system that provides more uniform and controllable temperature distribution. The infrared heater can be precisely controlled in terms of power and duration, and the non-contact nature of the heating ensures consistent thermal energy delivery regardless of electrode type or equipment speed variations, thereby improving temperature uniformity.
Solution Approach 2:
The patent implements a dynamic control system that can adjust the infrared heater's power output and heating duration based on real-time process conditions. This dynamic adjustment capability allows the system to maintain optimal temperature uniformity across different electrode types and equipment operation speeds, resolving the stability issue associated with fixed mechanical heating 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
Prevents electrode wrinkles, ensures uniform heating to a constant temperature, and reduces nip pressure, enhancing process efficiency and yield by minimizing direct contact and optimizing heating conditions.
Implementation Method 1
at least one heating lamp disposed to face the electrode... the heating lamp may be an infrared lamp
Data Source
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AI summary
A heating device for heating an electrode according to an embodiment of the present disclosure includes at least one heating lamp disposed to face the electrode; a heating chamber having an internal receiving space accommodating the heating lamp and configured to allow the electrode to pass through; and a control module configured to adjust the temperature of the electrode.