Wireless charging circuit, control method thereof and electronic equipment

Abstract

The invention provides a wireless charging circuit, a control method thereof and electronic equipment, and relates to the field of wireless charging. In the wireless charging circuit, a primary side module is connected with a primary side inductor, the primary side inductor is coupled with a secondary side inductor, the secondary side inductor, a switching compensation module and a secondary side module are sequentially connected, the primary side module is externally connected with an input voltage, and the secondary side module and the switching compensation module are both connected with a load; the switching compensation module is used for switching a compensation mode according to the voltage of the load; when the voltage of the load is lower than a set threshold value, the switching compensation module is switched to a first compensation mode to realize constant current output; when the voltage of the load is larger than or equal to the threshold value, the switching compensation module is switched to a second compensation mode, and constant voltage output is achieved. In the application, the switching compensation module can be switched to different compensation modes according to the voltage condition of the load, and constant-current and constant-voltage wireless charging can be realized, so that the output power and transmission efficiency of electric energy transmission are improved.

Description

technical field [0001] The present invention relates to the field of wireless charging, in particular to a wireless charging circuit, a control method thereof, and electronic equipment. Background technique [0002] At present, there is a shortage of renewable resources in the world and serious environmental pollution. The development of new energy vehicles with no pollution and zero emissions has become a strategic policy for sustainable development of all countries. At present, the charging technology is basically charging the charging pile, which is inconvenient. It has both mechanical loss and safety problems, which affects the popularization and promotion of electric vehicles. However, wireless charging of electric vehicles will not be limited by the power capacity, reducing the impact on the battery. Therefore, research and development of electric vehicle wireless charging technology is imperative. [0003] At present, the loosely coupled transformer in the wireless c...

AI Technical Summary

Problems solved by technology

At present, the charging technology is basically charging the charging pile, which is inconvenient. It has both mechanical loss and safety problems, which affects the popularization and promotion of electric vehicles. However, wireless charging of electric vehicles will not be limited by the power capacity, reducing the impact on the battery. Rely on, improve the cruising range, so research and development of electric vehicle wireless charging technology is imperative

[0003] At present, the loosely coupled transformer in the wireless charging circuit has the disadvantages of large leakage inductance and small excitation inductance, which leads to the increase of reactive power transmitted by the circuit and the decrease of transmission efficiency.

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