Coil modules, wireless charging transmitters, receivers, systems and terminals
A wireless charging and coil technology, applied in circuit devices, transformer/inductor coils/windings/connections, battery circuit devices, etc., can solve the problems of reducing wireless charging efficiency, coil winding circulating current loss, etc. The effect of improved charging efficiency
Active Publication Date: 2020-08-14
HUAWEI TECH CO LTD
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Problems solved by technology
[0004] However, after cutting the groove to divide the coil winding into two small windings with smaller width, such as figure 2 As shown, when the current I flows in the coil winding, the current I in the same direction flows in the two small windings respectively. 1 and current I 2 , at this time, if the magnetic field passes through the cutting groove, induced currents I in different directions will be generated in the two small windings on both sides of the cutting groove due to electromagnetic induction E , resulting in circulation loss in the coil winding, reducing the efficiency of wireless charging
Method used
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[0135] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manner of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0136] Figure 3A It is a structural schematic diagram of a coil module provided in the embodiment of the present application. see Figure 3A , the coil module includes an insulating layer 10 , a first planar coil winding 11 and a second planar coil winding 12 . see Figure 3A and Figure 3B , the first planar coil winding 11 is located on one side of the insulating layer 10, the second planar coil winding 12 is located on the other side of the insulating layer 10, and both the first planar coil winding 11 and the second planar coil winding 12 include multi-turn coils.
[0137] It should be noted that at least one turn of the first planar coil winding 11 includes a first part 111 , a second part 112 and a first connection part...
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The application discloses a coil module, which belongs to the technical field of wireless charging. The module includes: an insulating layer, a first planar coil winding and a second planar coil winding; at least one turn of the first planar coil winding includes a first part, a second part and a first connection part, and the second planar coil winding The at least one-turn coil includes a third part, a fourth part and a second connection part. In this application, the first connector is used to connect the outer part of the first part and the inner part of the second part, the second connector is used to connect the inner part of the third part and the outer part of the fourth part, and the first connector and the second part An overlapping portion exists between the projections of the two connectors on the plane where the insulating layer is located. Correspondingly, this application also discloses a wireless charging transmitting device, a receiving device and a system using the coil module, and a terminal using the wireless charging system.
Description
technical field [0001] The present application relates to the technical field of wireless charging, in particular to a coil module, a wireless charging transmitting device, a receiving device, a system and a terminal. Background technique [0002] Currently, it is becoming more and more popular to use wireless charging technology to charge electronic devices. A device that implements 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, the charging of the electronic equipment is realized. [0003] Since wireless charging is based on the magnetic coupling between the transmitting coil and the receiving coil for ...
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IPC IPC(8): H01F38/14H01F27/32H01F27/28
CPCH01F27/2852H01F27/2871H01F27/323H01F38/14H01F27/2804H01F2027/2809H02J50/10H02J50/12H02M7/12H02M7/42H02J2207/20H02J7/04
Inventor 裴昌盛朱勇发曾智强陈晓威
Owner HUAWEI TECH CO LTD