Electric vehicle wireless power supply guide rail commutation control circuit and method based on multi-stage guide rail

Abstract

The invention discloses a multistage guide rail-based EV (electric vehicle) wireless power guide rail conversion control circuit and method. The circuit comprises guide rail coils and a magnetic core; the front and rear ends of each guide rail coil are provided with transitional segments; the transitional segments of every two adjacent guide rail coils are in mutual lap joint; the transitional segments at two ends of each guide rail coil are provided with a first detection coil and a second detection coil, respectively; the first detection coil and the second detection coil are both connected with a microcontroller through an AD (analog / digital) sampling circuit; the signal output end of the microcontroller is further connected with a master controller; the microcontroller judges whether an EV enters according to detected voltage values of the first and second detection coils and outputs a control signal to the master controller; the master controller controls current switching of the corresponding guide rail coil. Reliable injection of power guide rail energy is ensured, stability of pick-up voltage is maintained, and system reliability and stability is higher.

Description

technical field [0001] The invention relates to wireless power supply technology, in particular, a circuit and method for controlling commutation of a wireless power supply guide rail of an electric vehicle based on multi-stage guide rails. Background technique [0002] In recent years, in order to solve the problems of short cruising range of electric vehicles and the bulky and high cost of on-board battery packs. People have proposed a dynamic induction power supply technology for electric vehicles based on the principle of non-contact power transmission, which can provide online power supply or charging functions for electric vehicles during driving, thereby reducing the weight of the on-board battery pack and reducing the overall cost of electric vehicles , extending the cruising range of electric vehicles. [0003] In the dynamic wireless power supply system for electric vehicles based on the principle of electromagnetic induction, the launch rail is generally several ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the above problems, the present invention first proposes a multi-stage guide rail electric vehicle wireless power supply guide rail commutation control circuit, and solves the commutation voltage loss problem by adding detection coils at both ends of the guide rail coil

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