Charging-free bluetooth headset based on magnetic coupling wireless power transmission technology

Abstract

The invention discloses a charging-free bluetooth headset based on magnetic coupling wireless power transmission technology. The charging-free bluetooth headset comprises a headset body and an electric energy emission circuit, the induction range of which is 0-60 cm. The bluetooth headset body comprises two earphone units and a connecting piece for connecting the two earphone units. Each earphone unit is provided with an ear muff matched with a human ear. Each earphone unit is internally provided with a rechargeable lithium battery, an electric energy receiving circuit and a rectification and voltage regulation system. The electric energy receiving circuit receives electric energy of the electric energy emission circuit, and transmits the electric energy to the rechargeable lithium battery through the rectification and voltage regulation system; and the rechargeable lithium battery provides a working voltage for a bluetooth headphone function circuit. The wireless bluetooth headset can carry out wireless charging on the lithium battery through the magnetic coupling wireless power transmission technology and provide power for inner parts in the wireless bluetooth headset body, so that the defects that a conventional bluetooth headset needs periodic charging, and due to dependence on a charging line, the bluetooth headset is not convenient to use are prevented.

Description

technical field [0001] The invention discloses a bluetooth earphone, in particular to a charge-free bluetooth earphone based on magnetic coupling wireless power transmission technology. Background technique [0002] Earphones are one of the most important external devices for computers and mobile phones, which provide great convenience for people's daily life and also play a very important role in our study and life. However, the earphone connection has brought great inconvenience and is easily damaged. With the development of wireless signal transmission technology, the technology of Bluetooth headset tends to be stable, which makes the headset get rid of the shackles of the headset cable, and can also transmit stably within a certain distance from the computer or mobile phone. Although the Bluetooth headset is free from the shackles of the earphone cable, it needs to be charged regularly, and it is inconvenient to use normally due to the shackles of the charging cable dur...

AI Technical Summary

Problems solved by technology

Although the Bluetooth headset is free from the shackles of the earphone cable, it needs to be charged regularly, and it is inconvenient to use normally due to the shackles of the charging cable during charging.

[0003] According to the principle of power transmission, wireless power transmission can be roughly divided into three categories: the first category is the direct coupling of the transformer principle. Although this method has a large power, it is only suitable for short distances; the second category is radio wave wireless energy transmission , directly using the principle that electromagnetic wave energy can be transmitted and received through the antenna. Although this method achieves long-distance and high-power energy transmission, the energy transmission is limited by the direction and cannot bypass obstacles, and the loss is large, which is harmful to the human body. The third type is the non-radiation coupling resonance method, which can transmit in the presence of obstacles, the transmission distance is relatively long, the transmission power is also large, and there is no harm to the human body

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