Inductance offset adaptive wireless charging method

Abstract

The invention discloses an inductance offset adaptive wireless charging method. The method comprises the following steps: acquiring a current inductance value of a target component in a wireless charging system; comparing the current inductance value with a preset inductance value, and adjusting the capacitance value of a corresponding compensation capacitor according to the type of the target component when the deviation between the two is greater than an error value; when the deviation is smaller than or equal to the error value, the existing working state is maintained; the number of the compensation capacitors at the transmitting end and the number of the compensation capacitors at the receiving end are two. The target component comprises a transmitting coil, a receiving coil, a transmitting end compensation inductor and a receiving end compensation inductor; the preset inductance value is the inductance value of each target component when the transmitting end and the receiving end are in a resonance state. According to the inductance offset self-adaptive wireless charging method, the working state can be self-adaptively adjusted when inductance value offset occurs to a plurality of coils or inductors in a wireless charging system, so that stable operation of wireless charging is ensured.

Description

technical field [0001] The invention relates to the field of wireless charging, in particular to an inductance offset adaptive wireless charging method. Background technique [0002] Wireless charging is a non-contact energy transmission method, which can realize the safe and efficient use of energy. In particular, electric vehicles using wireless charging can effectively support the full unmanned operation of vehicles, which is an important direction for the development of new energy vehicles. Under ideal conditions, the resonant coupled wireless charging system can maintain high output power and efficiency over a long transmission distance. However, the practical application scenarios of wireless charging are full of changes, such as spatial misalignment or movement between the transmitting and receiving coils, changes in operating temperature, load changes, and so on. In addition, in order to obtain the best performance, the wireless charging system requires that the res...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the constituent materials and the constraints of the current process conditions, high-precision components are not only very expensive, but still cannot meet the requirements even without considering the cost

The above reasons will cause the resonance point to drift during wireless charging, resulting in a decrease in charging efficiency and even failure to charge.

All these factors, from the external use environment to the constraints of internal components, have become obstacles to the practical application of wireless charging technology

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