Wireless charging receiving device, wireless charging implementation method and mobile terminal
A wireless charging and receiving device technology, applied in circuit devices, battery circuit devices, electric vehicles, etc., can solve problems such as low resistivity and ferrite heating
Inactive Publication Date: 2020-01-17
ZTE CORP
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Problems solved by technology
However, because the resistivity of manganese-zinc ferrite is small, eddy currents will still be generated in the ferrite, causing the ferrite to heat up.
This method cannot fundamentally avoid the situation of wireless charging fast charging heating
Method used
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[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0034] At present, the wireless charging scheme usually adopts a single-coil scheme at the receiving end, which is located in the center of the battery, such as figure 1 As shown, the wireless charging transmitting device includes a transmitting module 11 and a wireless charging transmitting coil 12, wherein the transmitting module 11 receives power supply and outputs an electrical signal to the wireless charging transmitting coil 12; the wireless charging receiving device includes a wireless charging receiving coil 21, The wireless charging conversion module 22 and the charg...
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The embodiment of the invention discloses a wireless charging receiving device, a wireless charging implementation method and a mobile terminal. The wireless charging receiving device comprises a wireless charging conversion module, a charging management module, a voltage combining module and at least two wireless charging receiving coils, and the at least two wireless charging receiving coils areused for being coupled with a wireless charging transmitting coil in a wireless charging transmitting device and outputting the alternating-current electromagnetic induction signals to the voltage combining module. The voltage combining module is used for carrying out voltage superposition on the alternating-current electromagnetic induction signals outputted by the at least two wireless chargingreceiving coils and outputting the superposed alternating-current electric signals to the wireless charging conversion module, the wireless charging conversion module is used for converting the received alternating-current electric signals into the direct-current electric signals and outputting the direct-current electric signals to the charging management module, and the charging management module is used for charging a battery by using the received direct-current electric signals.
Description
technical field [0001] The present application relates to the field of charging, in particular to a wireless charging receiving device, a method for implementing wireless charging, and a mobile terminal. Background technique [0002] The mobile terminal wireless charging technology is to charge the mobile terminal wirelessly, which usually includes electromagnetic induction and magnetic resonance, among which the electromagnetic induction is more common. [0003] For the wireless charging technology of electromagnetic induction mode, at present, the medium power wireless charging with the power of the receiving end greater than 5W and less than 15W is widely used, but in practical applications, it will be accompanied by serious heating. When fast charging is tested, the charging can only last for 8 to 10 minutes, and the temperature of the mobile phone has reached above 60°C at this time. [0004] When testing wireless charging products below 5W, it is also found that when ...
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IPC IPC(8): H02J50/10H02J7/02
CPCH02J50/10H02J50/402H02J7/04
Inventor 陈炳宽陈涛
Owner ZTE CORP