Magnetic core structure and electromagnetic coupling device based on magnetic core structure

Abstract

The invention discloses a magnetic core structure and an electromagnetic coupling device based on the magnetic core structure. The magnetic core structure comprises an emitter coil magnetic core baseplate and a picking coil magnetic core baseplate, which are square and are parallel to each other during working, wherein a plurality of magnetic winding columns are arranged on the inner side surface of the emitter coil magnetic core baseplate and are uniformly distributed in a rectangular array, while winding slots taking the shape of a Chinese character 'hui' are formed in the inner side of the picking coil magnetic core baseplate. The magnetic core structure and the electromagnetic coupling device have the remarkable effects that the structure of the magnetic core is simple, the processing forming is convenient, the magnetic field concentration ability is strong, the radio energy transmission distance is increased, the wound coil can be selectively powered and controlled, the electrical energy transmission area is adjustable to adapt to position deflection of a picking mechanism, the energy dissipation is small and the transmission efficiency is high.

Description

technical field [0001] The invention relates to electromagnetic coupling technology, in particular to a magnetic core structure used in a wireless energy transmission system and an electromagnetic coupling device based on the magnetic core structure. Background technique [0002] Wireless power transfer technology (Inductive Power Transfer), referred to as IPT technology, is a new technology that transfers energy to loads in a non-contact manner through electromagnetic coupling. The electromagnetic coupling mechanism is a key module to realize the wireless transmission of electric energy, and its design is related to various indicators such as the transmission distance, transmission range and transmission efficiency of the IPT system. The electromagnetic coupling mechanism is composed of an energy emitting mechanism and an energy picking mechanism. For mobile devices, their wireless power transmission methods are generally divided into two types: fixed-point transmission an...

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Problems solved by technology

[0004] With this fixed-point charging method, the car must be accurately parked in the preset charging area to ensure accurate alignment between the transmitting coil and the pickup coil, which is very inconvenient to use

therefore figure 2 Propose a mobile charging method, with figure 1 The difference is that the transmitting coil is set as the transmitting guide rail, and a rather long section of the road is used as the charging area, and a long transmitting guide rail is buried to transmit energy for the pickup coil. Although the range of energy transmission is expanded to a certain extent, the transmission less efficient

[0005] Moreover, in the traditional wireless power transfer system, the magnetic core structure adopted by the transmitting coil and the pickup coil is usually image 3 The cylindrical magnetic core shown has a relatively simple magnetic field distribution. Once the device is shifted, the energy transmission efficiency will be greatly reduced.

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