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 of 3.9 billion yuan. Toni Electronics (603595) 2022 interim report: Net profit63 million yuan, net profit growth 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, net profit growth rate of 376%, operating income of 3.8 billion yuan. Jing Quanhua (002885(002885) Annual Report: Net profit of 55 million yuan, net profit growth rate of 1180.62%, operating income of 11.1 billion yuan.
Aohai Technology: Main business: design, research and development, production and sales of intelligent terminal charging and storage products such as chargers and mobile power supplies. Lishun Precision: Main business: Connector product development, production and sales. Xinwei Communication: Main business: mobile terminal antenna, 3G terminal antenna, module antenna, 3D precision molding antenna.
Lisun Precision (002475), Lisun precision is the filter leader, the company focuses on connectors, connectionsResearch and development, production and sales of wire, motor, wireless charging, FPC, antenna, acoustic and electronic modules, and high-frequency product development. Dongshan Precision (002384), the company focuses on communication equipment, precision metal structural parts, LED technology and electronic circuit solutions, is the leading domestic transaction communication base station RF devices, RF structural parts provider.
Charging pile is mainly divided into DC, AC, wireless charging and battery replacement four categories, of which AC charging is low cost, but the power is small, slow charging, difficult to meet the long-distance demand. The charging pile industry is facing a large investment in the early stage and a return on investment cycleLong, high industry barriers, but still has a huge market potential.
2, Qi wireless charging use electricityThe magnetic induction principle wirelessly charges the device. Specifically, the charging base and the receiving device using Qi wireless charging technology will be equipped with conductive coils, the conductive coil of the charging base will generate an electronic magnetic field after being energized, and the conductive coil on the receiving device will convert electrical energy after feeling the magnetic field in a short distance, so as to charge the receiving device. Qi wireless charging has two characteristics: ease and versatility.
3, qi wireless charging is a technology that uses electromagnetic pulse to achieve wireless charging, the principle involves two groups of coils, the emission group and the acceptance group, a power, an induction, similar to the principle of high voltage pack, but more complex. Its bestThe point is that there is no cable connection, easy to use, the disadvantage is that the charging effect of high-capacity batteries is not ideal, and the charging efficiency is low. The charging distance is generally limited to a few millimeters, similar to a charger.
4, when the device and the charging pad contact, the charging pad will send energy to the device, and through electromagnetic induction will be transmitted to the wireless charging receiver inside the device, so as to achieve charging. Therefore, Apple's Qi wireless charging technology makes wireless charging more convenient and convenient, so that users can charge devices more easily.
5, small power wireless charging often uses electromagnetic induction, such as charging mobile phonesIn the Qi mode, a certain frequency of alternating current in the primary coil generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end. At present, the most common charging solution uses electromagnetic induction.
First of all, Tesla's wireless charging technology uses the principle of electromagnetic induction. The technology transmits energy through special electromagnetic fields, allowing Tesla cars to charge themselves when parked. This technology is not only efficient, but can also greatly reduce charging time. Secondly, the wireless charging technology of Tesla cars also has the characteristics of intelligence.
Wireless charger refers to the use of traditionalThe charging power cord is connected to the charger on the terminal device that needs to be charged, using the latest wireless charging technology, wireless charging technology obtained 20 patents in 2007, a variety of devices can use a charging base station, and wired charging of mobile phones, MP3 players, power tools and other power adapters will not exist.
The charging process of Tesla takes about 12 hours, but when using a home charger, the voltage may drop due to the peak load of the transformer, which affects the charging speed. In order to increase efficiency, it is recommended to install a special wall charger, whichThe charging time will be reduced to about 9 hours. The optional dual built-in charger can further shorten the charging cycle, and it only takes about 4 hours to full charge.
The Qi wireless charging standard is the most widely adopted technology on the market today. It is based on the principle of electromagnetic induction, converting electrical energy into a magnetic field, and then converting the magnetic field into electrical energy to charge the device. Although this technology is relatively mature and safe, there are certain heating problems, so users should avoid buying low-cost or inferior products when choosing wireless chargers. One of the main disadvantages of wireless charging is the relatively slow charging speed.
Tesla's idea though has