One-to-multipoint wireless power supply method and non-resonant wireless power supply device

Abstract

The invention discloses a one-to-multipoint wireless power supply method. The method comprises the following steps of: radiating magnetic force lines in a fixed region by using a high-frequency alternating magnetic field; cutting the high-frequency magnetic force lines by using coils which form a closed loop; and supplying an alternating current generated by the cutting coils to equipment after being rectified and filtered. A device for implementing the method consists of a high-frequency alternating magnetic field radiation unit and a magnetic force cutting and receiving unit; the magnetic force lines are radiated in the fixed region by using the high-frequency alternating magnetic field; and the magnetic force cutting and receiving unit cuts the magnetic force lines to generate the alternating current, rectifies and filters the alternating current, and supplies the alternating current to electrical equipment. Due to the adoption of a mode of radiating and cutting the magnetic force lines for performing energy exchange, a resonant relationship does not need to form between a power supply party and a power receiving party, so that a one-to-multipoint wireless power supply function is achieved; moreover, the consistency of homonymous ends (phases) of the coils of the two parties is not required; a receiving end can be arranged in any direction within a receiving range; and the non-resonant wireless power supply device can supply power to the electrical equipment directly and has a wider application range.

Description

Technical field: [0001] The invention relates to a one-to-multipoint wireless power supply method and a non-resonant wireless power supply device for realizing the method, which can be used for non-contact charging of batteries or directly supplying power to electronic equipment. Background technique: [0002] The power required by electronic products is generally directly supplied by the power cable. Due to the limitation of the power cable, the product is inconvenient to move, so many low-power electronic products use rechargeable batteries for power supply, and rechargeable batteries also need to use contacts or Jack for wired charging. However, the current wired charging method often fails to charge normally due to the dirt and wear of each contact piece, or even produces a sharp discharge effect due to poor contact between the contacts, burning out electronic products or causing safety accidents. And some electronic products are not suitable for wired power supply or c...

AI Technical Summary

Problems solved by technology

However, the current wired charging method often fails to charge normally due to the dirt and wear of each contact piece, or even produces a sharp discharge effect due to poor contact between the contacts, burning out electronic products or causing safety accidents

And some electronic products are not suitable for wired power supply or charging, (such as waterproof electronic products, electronic devices implanted in the human body, internal medical diagnostic equipment, mobile phones and game controllers and other electronic products that require frequent use and charging)

[0003] At present, some enterprises at home and abroad have launched non-contact charging products, but there are still many shortcomings in product performance. First, the transmission distance is extremely short and the range of activities is extremely small. The end (phase) of the same name as the receiving coil must be the same, so the receiving end cannot be placed in any direction; the third is that both the power supply and the power receiving party must have a resonance relationship before power transmission, so only one-to-one transmission is possible; four is The energy delivered is limited and can only be used for small current charging of the battery

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