Wireless power supply warm keeping device

Abstract

The invention discloses a wireless power supply warm keeping device. The wireless power supply warm keeping device comprises a power supply, an emission module, a receiving coil and a PTC electric heating chip; the emission module includes a frequency generation module and an emission coil; the frequency generation module is electrically connected with the emission coil to form a closed loop; the receiving coil and the PTC electric heating chip are electrically connected to form a closed loop; the power supply is electrically connected with the frequency generation module; the power supply outputs current; the frequency generation module generates high-frequency alternating current; the alternating current generates electromotive force through the emission coil; the electromotive force is coupled with inductance of the receiving coil; the current is transmitted to the receiving coil, and is output to the PTC electric heating chip for heating; and the wireless power supply warm keeping device is uniform in heating, safe, efficient and small in temperature difference.

Description

technical field [0001] The invention relates to a warming device, in particular to a wireless power supply warming device. Background technique [0002] In order to meet people's warming needs, numerous electric heating and warming products appear on the market. At present, most common electric heat preservation products use energized resistance wires to generate heat to provide heat. There are safety hazards such as local overheating and easy leakage and fire. Therefore, heating the heating element through wireless technology has become the focus of research in recent years. At present, the most used is to use inductive coupling to transmit electric energy through the magnetic field between the coils. In order to ensure the safe use of the heating element, the current is rectified and filtered to stabilize the current before output, and a relatively stable current is filtered out, which causes the wireless power supply to generate heat. The efficiency of the device is low,...

AI Technical Summary

Problems solved by technology

At present, most of the common electric heating products use energized resistance wire to generate heat to provide heat, which has the potential safety hazard of local overheating and easy leakage and fire. Therefore, heating the heating element through wireless technology has become the focus of research in recent years.

At present, the most used is to use inductive coupling to transmit electric energy through the magnetic field between the coils. In order to ensure the safe use of the heating element, the current is rectified and filtered to stabilize the current before output, and a relatively stable current is filtered out, which causes the wireless power supply to generate heat. The efficiency of the device is low, and this type of device needs a temperature sensing control system to adjust and limit the use temperature

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