A control method of a wireless charging transmitter and a wireless charging transmitter
A technology of wireless charging and control method, which is applied to the control of wireless charging transmitter and the field of wireless charging transmitter, can solve the problems of low efficiency of wireless charging system, poor control effect and low control efficiency, and achieves both control efficiency and control effect. , the effect of improving charging efficiency
Active Publication Date: 2021-11-09
HALO MICROELECTRONICS CO LTD
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Problems solved by technology
However, the current control method of the transmitter is either low in control efficiency, or poor in control effect, and the efficiency of the wireless charging system is not high
Method used
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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the protection scope of the present invention. In addition, although functional modules are divided in the schematic diagram of the device, and a logical sequence is shown in the flowchart, in some cases, the divisio...
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The present invention relates to the field of wireless charging, in particular to a control method of a wireless charging transmitting end and a wireless charging transmitting end. The method includes: providing an excitation current to the transmitting coil so that the excitation current of the at least two transmitting coils assumes a first A ratio; when the output voltage of the receiving end is within a preset voltage range, adjust the first ratio based on the input impedance of each transmitting coil; when the output voltage of the receiving end is outside the preset voltage range, adjust each transmitting coil The amplitude of the excitation current of the coil is used to make the output voltage gradually converge within the preset voltage range. When the output voltage of the receiving end is outside the preset voltage range, the present invention first maintains the first ratio of the excitation current of each transmitting coil, adjusts the amplitude of each excitation current, and quickly adjusts the output voltage of the receiving end, and then improves the charging efficiency. The adjustment can take both control efficiency and control effect into consideration.
Description
technical field [0001] The invention relates to the field of wireless charging, in particular to a control method of a wireless charging transmitter and a wireless charging transmitter. Background technique [0002] The wireless charging system can charge the electrical equipment wirelessly, and it usually includes a transmitter and a receiver. The transmitter and the receiver interact with an alternating magnetic field in a wireless form to perform power transmission. In recent years, wireless charging systems have been widely used in various electronic devices due to their safety and convenience, such as smart terminals, medical equipment, and electric vehicles. [0003] The current wireless charging transmitter can be equipped with multiple transmitting coils to provide magnetic fields in multiple directions, thereby supporting the receiving terminal to charge in various spatial postures. When using a transmitting terminal with multiple transmitting coils to transmit ele...
Claims
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IPC IPC(8): H02J7/00H02J50/10H02J50/12H02J50/40H02J50/80H02J50/70
CPCH02J7/007H02J50/10H02J50/12H02J50/40H02J50/80H02J50/70
Inventor 郝跃国杨松楠
Owner HALO MICROELECTRONICS CO LTD