Frequency conversion control method, device and storage medium of wireless charging system

A wireless charging and frequency conversion control technology, applied in the direction of circuit devices, electrical components, etc., can solve the problem of narrow working range between the transmitting end and the receiving end, and achieve the effect of expanding the scope of application, avoiding damage, and increasing the difference

Active Publication Date: 2020-12-11
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] Embodiments of the present invention provide a frequency conversion control method, device, and storage medium for a wireless charging system, aiming to solve the problem of narrow working range between the transmitting end and the receiving end in the existing wireless charging

Method used

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  • Frequency conversion control method, device and storage medium of wireless charging system
  • Frequency conversion control method, device and storage medium of wireless charging system
  • Frequency conversion control method, device and storage medium of wireless charging system

Examples

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Embodiment 1

[0040] see figure 1 , is a schematic flowchart of a frequency conversion control method for a wireless charging system provided in Embodiment 1 of the present invention, and the method includes the following steps:

[0041] Step S10, when the wireless charging system is in a stable charging state, acquire the phase shift angle of the transmitter in real time.

[0042] The wireless charging system includes a wireless charging transmitter and a receiver, the transmitter is connected to a power supply, and the receiver is connected to the battery of the device to be charged. For example, when a wireless charging car is charging, the charging pile is connected to a transmitter, and the wireless charging car is installed with a receiver, which receives the electric energy transmitted by the transmitter to charge the battery of the car.

[0043] The transmitting end includes a transmitting coil, and the receiving end includes a receiving coil. Through the electromagnetic coupling b...

Embodiment 2

[0064] see Figure 4 , is a schematic flowchart of a frequency conversion control method for a wireless charging system provided in Embodiment 2 of the present invention. The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, after step S10, the method further includes:

[0065] Step S30, detecting the charging current of the receiving end in real time.

[0066] The charging current at the receiving end refers to the current that the receiving end charges the battery and other loads after receiving the electric energy transmitted by the transmitting end. The charging current can be detected by the current detection device installed between the receiving end and the battery. It should be noted that step S30 is not limited to be performed after step S10, and may also be performed before or simultaneously with step S10.

[0067] Step S40, when the charging current of the receiving end is less than the second preset current and the phase shift angle is smal...

Embodiment 3

[0076] see Figure 5 , is a schematic structural diagram of a frequency conversion control device for a wireless charging system provided by the third embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. The frequency conversion control device of the wireless charging system includes:

[0077] The phase shift angle detection unit 10 is configured to acquire the phase shift angle of the transmitter in real time when the wireless charging system is in a stable charging state.

[0078] The wireless charging system includes a wireless charging transmitter and a receiver, the transmitter is connected to a power supply, and the receiver is connected to the battery of the device to be charged. For example, when a wireless charging car is charging, the charging pile is connected to a transmitter, and the wireless charging car is installed with a receiver, which receives the electric energ...

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Abstract

The invention provides a frequency conversion control method and device of a wireless charging system and a storage medium. The wireless charging system comprises a transmitting end and a receiving end, wherein the transmitting end is provided with a phase-shift full-bridge control circuit. The method comprises the following steps: obtaining a phase-shift angle of the transmitting end in real timewhen the wireless charging system is in a stable charging state; and when the phase shift angle is greater than a first preset phase shift angle, adjusting the current resonant frequency of the transmitting end, and increasing the frequency difference between the current resonant frequency of the transmitting end and the preset resonant frequency; by detecting phase shift angle parameter of the transmitting end and a charging current parameter of a receiving end, deducing the distance between the current transmitting coil and the receiving coil; when the distance between the transmitting coiland the receiving coil is too short, adjusting the current working frequency to be far away from the optimal resonant frequency; and when the distance between the transmitting coil and the receivingcoil is too long, adjusting the current working frequency to be close to the optimal resonant frequency, thereby expanding the application range of the distance between the transmitting end and the receiving end in the wireless charging system.

Description

technical field [0001] The present invention relates to the technical field of wireless charging, in particular to a frequency conversion control method, device and storage medium of a wireless charging system. Background technique [0002] With the development of technology, wireless charging devices are widely used. The wireless charging system is generally divided into a wireless charging transmitting end and a receiving end, and an alternating magnetic field is generated between the transmitting coil in the transmitting end and the receiving coil in the receiving end to transmit electric energy. [0003] The transmitting end and the receiving end are affected by factors such as coil distance and offset angle in actual work, so the transmitting end needs to have a better control strategy to adapt to different working conditions. At present, most wireless charging systems in the wireless charging industry use a fixed-frequency control system. During the entire charging pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J50/80H02J50/90
CPCH02J50/12H02J50/80H02J50/90
Inventor 胡锦敏曹达平
Owner 深圳赫兹创新技术有限公司
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