BI-DIRECTIONAL WIRELESS POWER TRANSMISSION SYSTEM Russian patent published in 2023 - IPC H02J50/12 

FIELD: electrical engineering.

SUBSTANCE: invention can be used as a device for contactless power transmission during operation as part of autonomous and non-autonomous devices, for bidirectional wireless power transmission between system parts, as a device for wireless charging of batteries of mobile systems. The configuration of the bi-directional wireless power transmission system allows it to be used to redistribute energy resources between autonomous devices with power supplies having equal and different voltages. The technical problem is solved by applying the proposed structure of the system and circuit solutions. The bi-directional wireless power transmission system consists of two functional parts having an identical circuit diagram. Each functional part of the system has an electrical connection to a power source or energy consumer in the final device in which it is installed. Wireless power transmission is carried out between two end devices, in which the functional part of the proposed bidirectional wireless power transmission system is installed. Each functional part of the proposed solution consists of the following structural blocks: a resonant LC circuit connected to the output of a resonant oscillator, a step-up DC-DC converter, the input of which is connected to the input of a resonant oscillator, and the output to the energy consumer of the end device of the operation mode control circuits that allow to control the operation of the DC-DC converter and to electrically connect the energy source of the end device with the input of the resonant oscillator. The main part of the system is a resonant oscillator. Energy transfer is carried out by method of electromagnetic induction through inductively coupled parallel resonant LC circuits.

EFFECT: increase of efficiency and simplification of circuit solution of a bidirectional wireless electrical energy transmission system based on the principle of inductive coupling between the coils of the resonant circuit, the energy transfer between the receiving and transmitting parts of which is carried out without contact, in presence of an air gap.

4 cl, 3 dwg, 1 tbl