Electrode Stack Assembly With Induction Heating for Uniform Bonding

The patent replaces conventional thermal heating with induction heating technology. The induction heating coil generates an electromagnetic field that directly induces eddy currents in the conductive electrodes, converting electromagnetic energy into heat within the workpiece itself. This eliminates the need for external thermal fields and contact-based heating, significantly reducing heating time and energy consumption while maintaining effective adhesive bonding.

The induction heating process utilizes alternating current at high frequency to generate periodic electromagnetic fields. This periodic action creates rapid oscillating eddy currents that generate heat quickly and efficiently. The periodic nature of the electromagnetic field allows for precise control of heating rate and temperature distribution, reducing overall processing time compared to conventional continuous thermal heating.

By replacing conventional thermal heating with induction heating, the patent achieves more uniform heat distribution. The electromagnetic field penetrates the entire stack simultaneously, inducing eddy currents throughout the conductive electrodes. This results in uniform internal heat generation across the entire workpiece, eliminating the non-uniform temperature distribution that occurs with external thermal heating methods.

The patent changes the heating mechanism from external thermal conduction to internal electromagnetic induction. By adjusting the frequency and intensity of the electromagnetic field, precise control over heat generation is achieved. The induction heating parameters (frequency, power level, coil positioning) can be optimized to ensure uniform temperature distribution throughout the stack, leading to consistent adhesive force across all bonding locations.

The patent substitutes conventional thermal heating systems with an induction heating system. Instead of using external heat sources that require significant energy to heat large volumes of air or contact surfaces, the induction coil generates an electromagnetic field that directly induces currents in the electrodes. This converts energy directly into heat within the workpiece, minimizing energy loss to the surrounding environment and reducing overall energy consumption.

The induction heating process enables the workpiece itself to generate the heat required for bonding. The conductive electrodes act as their own heating elements through induced eddy currents. This self-heating mechanism eliminates the need for external heating systems that consume substantial energy, as the energy is converted directly at the location where it is needed, with minimal transmission losses.