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Wireless charging method and the terminal

A wireless charging and wireless charger technology, applied in the field of communications, can solve the problems of input voltage limitation, limitation, and inability to effectively realize power, and achieve the effect of reducing charging time and improving charging efficiency

Active Publication Date: 2017-12-15
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, in the above two schemes, for the first scheme, due to the existence of the DC impedance and AC impedance of the receiving coil of the terminal, the coil will cause serious heating when the current exceeds a certain threshold, so the effect of increasing the power by continuously increasing the current It is relatively limited, and for the second solution, since the power management chip responsible for charging in the terminal has a limit on the input voltage, increasing the power by increasing the voltage will also be limited
It can be seen that due to the limitation of the terminal receiving coil and power management chip, the existing wireless charging scheme cannot effectively improve the power

Method used

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Embodiment Construction

[0019] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of terminals and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0020] Figure 1A It is a flow chart of a wireless charging method shown according to an exemplary embodiment, as shown in Figure 1A As shown, this embodiment is illustrated by taking the wireless charging method applied to a terminal as an example. The wireless charging method may include the following steps:

[0021] In step 101, the terminal obtains the voltage threshold supported ...

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Abstract

The invention relates to a wireless charging method and a terminal, wherein the wireless charging method comprises the following steps: the terminal obtains the voltage threshold supported by a power management chip and a plurality of output voltages supported by a wireless charger as well as corresponding output current upper limit values; the terminal determines a voltage conversion coefficient according to the plurality of output voltages and the voltage threshold value, and sends a power charging request to the wireless charger, wherein the power charging request comprises a requested voltage and a requested current. The requested voltage is the maximum output voltage which is no greater than the product of the voltage threshold value and the reciprocal of the voltage conversion coefficient, and the requested current is no greater than the upper limit value of the output current corresponding to the requested voltage; and the terminal generates a power charging signal under the excitation of a wireless signal outputted by the wireless charger, and according to the voltage conversion coefficient and the current conversion coefficient, carries out voltage and current conversion on the power charging signal to obtain an input signal of the power management chip, wherein the current conversion coefficient is the reciprocal of the voltage conversion coefficient. According to the schemes proposed by the invention, the charging efficiency can be effectively improved, and the charging time can be shortened.

Description

technical field [0001] The present disclosure relates to the communication field, and in particular, to a wireless charging method and terminal. Background technique [0002] With the development of wireless charging technology, more and more terminals, including many wearable devices and smart terminals, begin to apply wireless charging technology. Specifically, the terminal to be charged acts as the receiving end of wireless charging, and converts the wireless signal sent by the transmitting end of wireless charging to obtain a corresponding charging signal. The charging signal is used to provide the input signal of the power management chip to enable the power management The chip charges the battery of the terminal. In wireless charging technology, in order to improve the power and efficiency of charging, two solutions need to be adopted: one is to increase the current of the wireless charging signal while keeping the voltage constant, thereby increasing the power; the o...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0077H02J7/025H02J7/00034H02J50/10H02J50/80H02J50/60G05F1/577H02J7/00712G06F1/26H02J7/00714
Inventor 王彦腾
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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