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Wireless charging system startup control method and device and wireless charging system

A power-on control and wireless charging technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve problems such as system power density and efficiency decline

Inactive Publication Date: 2020-10-23
深圳赫兹创新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a start-up control method for a wireless charging system, which aims to solve the existing problem of decreasing system power density and efficiency caused by using a discharge circuit to prevent the output capacitor energy from being poured back at the receiving end.

Method used

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  • Wireless charging system startup control method and device and wireless charging system
  • Wireless charging system startup control method and device and wireless charging system
  • Wireless charging system startup control method and device and wireless charging system

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Experimental program
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Embodiment 1

[0054] see figure 1 , is a schematic flow chart of the method for controlling the start-up of the wireless charging system provided by the first embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. The method for controlling the start-up of the wireless charging system is applicable to the wireless charging system. Specifically in this embodiment, refer to Figure 5 As shown, its wireless charging system includes:

[0055] The transmitter 20 includes a first rectifier module 21, a high-frequency inverter module 22, a first control module 23, and a first wireless communication module 24 connected in sequence, and a transmitter coil 25 connected to the high-frequency inverter module 22;

[0056] And the receiving end 30 includes a receiving coil 31 , a second rectification module 32 , a buck module 33 , a second control module 34 , and a second wireless communication module 35 conn...

Embodiment 2

[0079] see figure 2 , is a schematic flow chart of a method for controlling the start-up of a wireless charging system provided by the second embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. The method for controlling the start-up of the wireless charging system is applicable to wireless charging For the corresponding parts of the system, refer to the first embodiment above. Specifically, in this embodiment, the power-on control method of the wireless charging system includes:

[0080] Step S11, obtaining the output terminal voltage of the buck module in the receiving terminal;

[0081]Wherein, in the embodiment of the present invention, the specific steps for obtaining the voltage at the output terminal of the buck module at the receiving end refer to the description in the first embodiment above.

[0082] Step S21, judging whether the voltage at the output terminal is great...

Embodiment 3

[0107] see image 3 , is a block diagram of a start-up control device for a wireless charging system provided by the third embodiment of the present invention. For convenience of description, only the parts related to the embodiment of the present invention are shown. The start-up control device for a wireless charging system includes:

[0108] A voltage acquisition module 11, configured to acquire the output terminal voltage of the buck module in the receiving end;

[0109] A voltage judging module 21, configured to judge whether the output terminal voltage is greater than a preset threshold, and the preset threshold is determined according to the output voltage level of the buck module;

[0110] The voltage discharge module 31 is used to control the buck module to discharge the voltage on the output terminal until the output terminal voltage is not greater than the preset threshold value when the voltage judgment module 21 judges that the output terminal voltage is greater t...

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Abstract

The invention is suitable for the technical field of wireless charging, and provides a wireless charging system startup control method and device and a wireless charging system. The method comprises the following steps: obtaining output end voltage of a buck module in a receiving end; judging whether the output end voltage is greater than a preset threshold; when it is judged that the output end voltage is larger than a preset threshold value, controlling the buck module to discharge the voltage of the output end until the voltage of the output end is not larger than the preset threshold value; when it is judged that the output end voltage is not larger than the preset threshold value, judging whether the buck module breaks down or not; if so, controlling the buck module to be closed and restarted, and re-obtaining the voltage of the output end of the buck module in the receiving end again after a preset time until it is judged that the voltage of the output end is not larger than thepreset threshold value and the buck module does not break down; and if not, controlling the buck module to work normally. The problem that the system power density and efficiency are reduced due to the fact that a discharging circuit is adopted for preventing energy of an output capacitor of a receiving end from flowing backwards is solved.

Description

technical field [0001] The invention belongs to the technical field of wireless charging, and in particular relates to a method and device for controlling the start-up of a wireless charging system and a wireless charging system. Background technique [0002] With the development of science and technology and the improvement of consumption level, due to the characteristics of non-contact, no wire connection and convenient operation, wireless charging products have attracted the attention of various manufacturers, and various wireless charging products have also come out one after another. Electronic products with wireless charging functions are also used by more and more consumers. [0003] The traditional wireless charging system is divided into a transmitter and a receiver. Among them, a buck module is often added to the receiving end, and the charging voltage / current tends to be stable by detecting its own output voltage / current and closed-loop adjustment, and realizes e...

Claims

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Application Information

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IPC IPC(8): H02J7/04H02J50/10H02J50/80
CPCH02J7/04H02J50/10H02J50/80
Inventor 胡锦敏林钊
Owner 深圳赫兹创新技术有限公司
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