Wireless and contactless electrical energy transfer assembly comprising an improved system for regulating the transferred energy

Contactless and wireless electrical energy transfer assembly comprising:

• a transmitting part (Tx) comprising:
• a primary coupling module with at least one primary coil,
• a primary electronic module comprising at least one DC/AC electronic converter designed to convert a DC current into an AC electric current to be injected into the primary coil, and a monitoring/control unit for the DC/AC electronic converter;
• a receiving part (Rx), comprising:
• a secondary coupling module with at least one secondary coil designed to achieve magnetic coupling with the primary coil,
• a secondary electronic module including a rectifier designed to convert the AC electric current received in the secondary coil in order to transfer DC electrical energy to a load at output of the receiving part;
• a system for regulating the energy transferred from the transmitting part (Tx) to the receiving part (Rx), comprising
• in the receiving part:
• electronic measuring and shaping means for measuring the current and/or the voltage at the output of the rectifier and shaping it/them,
• at least one comparator designed to compare the measured voltage and/or the measured current with a voltage instruction and/or current instruction, and
• electronic shaping means that generate signals, called error signals, on the basis of the energy level required at Rx,
• a transmission antenna for transmitting the error signals, the transmission antenna having at least one magnetic induction coil that is separate and designed to operate at a frequency different from the secondary coil;
• in the transmitting part:
• a reception antenna for receiving the error signals transmitted from the transmission antenna, the reception antenna having at least one magnetic induction coil that is separate and designed to operate at a frequency different from the primary coil,
• electronic processing means for processing the error signals, connected at input to the reception antenna and at output to the monitoring/control unit that is designed to regulate the energy of the DC/AC electronic converter;
• in which system said electronic shaping means for shaping the error signals allow a frequency modulation (1/T0) of the current pulses and/or voltage pulses of fixed duration (T1) on the side of the receiving part (Rx),
• said electronic processing means for processing the error signals allow a frequency demodulation (1/T0) of the error signals sent to the monitoring/control unit for the DC/AC electronic converter on the basis of the error signals,
• and wherein said respective transmission and reception antenna coils are wound concentrically to the secondary coil and the primary coil, respectively.