Wireless charging derating control method, device and system for repeatedly adjusting output current

A technology of output current and wireless charging, which is applied in battery circuit devices, circuit devices, transportation and packaging, etc., can solve the problems of buck module input voltage increase, buck module load reduction, output power reduction, etc., so as to facilitate popularization , stable charging, and the effect of reducing damage

Active Publication Date: 2021-12-10
深圳赫兹创新技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The defect of the existing technical solution: when the transmitting coil and the receiving coil are at certain offset points or distance points, when the output current decreases according to the decrease of the input voltage, the output power decreases accordingly, which is equivalent to the load of the Buck module is reduced, the input voltage of the Buck module will increase at this time
Repeatedly, causing the output current to adjust back and forth, periodically decreasing first and then increasing
For the battery load, this periodic charging current will damage the battery

Method used

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  • Wireless charging derating control method, device and system for repeatedly adjusting output current
  • Wireless charging derating control method, device and system for repeatedly adjusting output current
  • Wireless charging derating control method, device and system for repeatedly adjusting output current

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Embodiment Construction

[0047] This embodiment takes the wireless charging derating control method, device and system for preventing repeated output current adjustment as an example, and the present invention will be described in detail below with reference to specific embodiments and drawings.

[0048] see figure 1, which shows a wireless charging derating control method for preventing repeated output current adjustment provided by an embodiment of the present invention, including the following steps:

[0049] S10, connect the transmitting end circuit, the transmitting end enters the working state, and detect the working state of the receiving end circuit;

[0050] S20, monitoring the input voltage value of the Buck module;

[0051] S30, judging whether the input voltage value of the Buck module repeatedly cycles between above the first voltage threshold V1 and below the second voltage threshold V2;

[0052] S40, when the input voltage value of the Buck module repeatedly cycles between above the f...

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Abstract

The invention discloses a wireless charging derating control method, device and system for preventing repeated adjustment of the output current, comprising the following steps: connecting the transmitting end circuit, the transmitting end enters the working state, detecting the working state of the receiving end circuit; monitoring the input of the Buck module Voltage value; determine whether the input voltage value of the Buck module is repeatedly cycled between above the first voltage threshold V1 and below the second voltage threshold V2; when the input voltage value of the Buck module is above the first voltage threshold V1 to the second voltage threshold V2 When the following cycles are repeated, the output current of the control BUCK module is stabilized at the derated current I3. The output power of the Buck module to the load battery is kept constant, realizing stable charging of the load battery and reducing damage to the load battery.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, in particular to a wireless charging derating control method, device and system for preventing repeated adjustment of output current. Background technique [0002] The wireless charging system refers to the wireless transmitting coil and the wireless receiving coil transferring energy through the magnetic field to realize the non-contact transmission of electric energy. Due to the good functionality, high reliability, good flexibility, high safety and high service life of the wireless charging system, coupled with the characteristics of no contact and no wear, it is widely used in various fields. [0003] The wireless charging module is divided into a transmitting end and a receiving end. A Buck module is often added at the receiving end. By detecting its own output voltage / current and closed-loop adjustment, the charging voltage / current tends to be stable, and effective and tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J50/80H02J50/10
CPCH02J7/00712H02J7/00302H02J50/80H02J50/10
Inventor 何智林钊胡锦敏
Owner 深圳赫兹创新技术有限公司
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