Coil module, wireless charging transmitting device, wireless charging receiving device, wireless charging system and mobile terminal

Abstract

The invention discloses a coil module, a wireless charging transmitting device, a wireless charging receiving device, a wireless charging system and a mobile terminal. The coil module comprises a first plane coil winding, wherein the first plane coil winding comprises multiple turns of coils and a target side part; at least one turn of a first coil of the multiple turns of coils of the first planecoil winding comprises at least one first cutting opening; the first cutting opening divides the first coil into a first outer side part and a first inner side part in the extending direction of thecoil; the first outer side part is provided with a first connecting end, and the first inner side part is provided with a second connecting end; the first target side part comprises a first cutting groove, wherein the first target side part is at least one of the first outer side part and the first inner side part; the extending direction of the first cutting groove is the same as that of the first target side part; and the width of the single first cutting groove is smaller than or equal to that of the single first cutting opening. The vortex path of the first target side part is cut off, thepassing area of the magnetic flux is reduced, the magnetic flux is reduced, the eddy current loss and the circulating current loss are reduced, and the charging efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a coil module, a wireless charging transmitting and receiving device, a system and a mobile terminal. Background technique [0002] At present, it is more and more popular to use wireless charging technology to charge electronic devices, and a device that realizes wireless charging technology is called a wireless charger. In a specific implementation, the wireless charger is provided with a transmitting coil, and the electronic device is provided with a receiving coil. The alternating current carried by the transmitting coil in the wireless charger generates a magnetic field, and the receiving coil in the electronic device generates a voltage through magnetic coupling, thereby realizing Charging of electronic devices. [0003] It can be understood that the wireless charging coil can be a transmitting coil or a receiving coil. Energy is transferred between th...

AI Technical Summary

Problems solved by technology

Therefore, a wire with a larger area corresponds to a larger magnetic flux passing through it, and the eddy current loss generated on the wire is relatively large, resulting in a relatively low efficiency of wireless charging.

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