Apple wireless charging concept stock leader has total Da Electrosound; Anjie Technology; Lishun precision; Goer Shares; Crystal photoelectric; Dongshan precision; Ultrasonic electronics and other high-tech companies.
What are the leading shares of wireless charging Cloud Road shares (688190) 2022 report: Net profit of 90 million yuan, net profit growth rate of 428%, operating income 3900 million yuan. Toni Electronics (603595) reported in 2022: Net profit of 63 million yuan, net profit growth rate of 376%, operating income of 3.8 billion yuan. Jingquanhua (002885) (002885) 2022 interim report: Net profit of 55 million yuan, net profit growth rate of 1180.62%, operating income of 11.1 billion yuan.
Yunlu Stock (688190) annual report: Net profit of 90 million yuan, net profit growth rate of 428%, operating income of 3.9 billion yuan. Toni Electronics (603595) annual report: Net profit of 63 million yuan, netProfit growth rate of 376%, operating revenue of 3.8 billion yuan. Jingquanhua (002885) (002885) annual report: Net profit of 55 million yuan, net profit growth rate of 1180.62%, operating income of 11.1 billion yuan.
NJIE Shares (00281SZ) : Njie Shares is a company focused on the development and production of wireless charging technology, and its products have been applied in many fields, including automobiles, smart homes and so on. The company's wireless charging technology has obtained a number of international certifications and has a high technical content. The above three stocks are considered wireless charging concept stocks in the marketWireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone. As shown below.
2, wireless charging is based on the principle of electromagnetic induction and nuclear magnetic resonance. Wireless charging technology, derived from wireless power transmission technology. Is the use of near-field induction (inductive coupling), the current flowing through the coil will produce a magnetic field. The proximity of other unenergized coils to this magnetic field will generate an electric current. Realized energyTransport.
3, wireless charging system mainly uses the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
4, the working principle of the wireless charger: the principle of electromagnetic induction, through the coil for energy coupling to achieve energy transfer. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or 24The V DC terminal directly supplies power to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
5, wireless charging technology has a long history, and for ordinary consumers, wireless charging still looks very magical, so what is the principle of wireless charging current conversion to magnetic field The basic principle of wireless charging, is to convert the current into a magnetic field, the magnetic field is transmitted through the air and converted into current transmission to the intelligent terminal. After the battery is charged, the direct current output by the power management module is converted into high-frequency AC power through the 2M active crystal inverterStage winding.
1, wireless charging is also known as inductive charging or non-contact inductive charging, based on the principle of electromagnetic induction, it is not necessary to transmit electricity to the device like the traditional wired charger, but the device that needs to be charged can be charged by contacting the wireless charging base.
2, wireless charger use method: the mobile phone standard charger and data cable connected to the wireless charger, and then the mobile phone is/horizontally placed in the wireless charger base left and right center position, to achieve wirelessCharging, the indicator light will have a breathing effect, 5 seconds after the extinguish, plug and play, convenient and quick.
3, the basic principle of wireless charging is to convert the current into a magnetic field, and the magnetic field is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
4, wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and wirelessRadio wave transmission and other methods, wireless charging of mobile phones mostly use the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging the mobile phone. As shown below.
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. Input terminal when the system worksThe AC mains is converted into direct current through the full bridge rectifier circuit, or the 24V DC terminal is used to supply power directly to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
Generally, wireless charging uses the principle of "current magnetic effect" and "electromagnetic induction". In 1819, Danish scientist Elster observed that if there is an electric current on a wire, a magnetic field will be generated around it, which can deflect the north finger. Later generations have further found that the wire is encircled into a ring, or even wound into a coil, and the magnetic field generated will be stronger and more concentrated, which is called the "current magnetic effect."
SAN 'an Optoelectronics (60070SH) : SAN 'an Optoelectronics is a well-known semi-conductor in ChinaOne of the providers of body lighting and display solutions, it also has more in-depth research in wireless charging technology. The wireless charging chip developed by the company has been applied in a number of intelligent devices, and has a high market competitiveness. Zte (00006SZ) : ZTE is one of China's leading communications solution providers with an active presence in wireless charging technology.
Yunlu Stock (688190) annual report: Net profit of 90 million yuan, net profit growth rate of 428%, operating income of 3.9 billion yuan. Toni Electronics (603595) annual report: Net profit of 63 million yuan,Net profit increased by 376%, operating revenue 3.8 billion yuan. Jingquanhua (002885) (002885) annual report: Net profit of 55 million yuan, net profit growth rate of 1180.62%, operating income of 11.1 billion yuan.
What are the wireless charging concept stocks? Shuobide (300322) : A-share is the first communication antenna leader to enter wireless charging. The company is the domestic communication terminal antenna leading enterprises. Shuobide is a professional manufacturer of wireless communication terminal antennas, the main business is the development, production and sales of wireless communication terminal antennas.
The size of the current is related to the thickness of the coil, as well as the frequency. Look at the specific circuit, sometimes when the difference in inductance value is not large, the impact on the output voltage and current is not obvious, but it may lead to a large difference in the change in unit period voltage/current, and also lead to the difference in loss and efficiency, so the choice of inductor is reasonable at this time, mainly to see whether it can get better performance under the premise of meeting the size specifications.
Wireless charging is based on electromagnetic sensingIt is done by the principle of nuclear magnetic resonance. Wireless charging technology, derived from wireless power transmission technology. Is the use of near-field induction (inductive coupling), the current flowing through the coil will produce a magnetic field. The proximity of other unenergized coils to this magnetic field will generate an electric current. Realize energy transfer.
Using electromagnetic induction to charge these two physical phenomena at the same time, you can carry out wireless charging. Current wireless charging devices all contain a "charging seat", which is actually a coil. When the charging seat is connected to the home plug, a magnetic field is generated around the coil due to the magnetic effect of the current.
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