the distinction is
When the current passes through the coil, a magnetic field is generated, and when the magnetic flux of the closed circuit changes, an induced electromotive force is generated.
Wireless charging is such a process. The charging base is responsible for turning the current into a magnetic field, and it is a constantly changing magnetic field.
There is a coil under the back cover of the phone, and because the magnetic field of the base is constantly changing, the magnetic flux in the coil is also constantly changing, generating an induced electromotive force for charging. By the way, the metal has the effect of electromagnetic shielding, so the metal body of the mobile phone, there is no wireless charging. So at present, the back cover of wireless charging is either glass, ceramic, or plastic
Qi is the world's first standardization organization to promote Wireless charging technology - Wireless Power Consortium (hereinafter referred to as \"Wireless Power Consortium\"). Alliance ") Launched. Wireless charging " The standard has two characteristics of convenience and versatility. First of all, different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger.
Second, it conquers wireless charging. Versatility " In the near future, mobile phones, cameras, computers and other products can be charged with Qi wireless chargers, providing the possibility for large-scale applications of wireless charging. & # 34; Qi" This icon is " in Chinese; Gas; The Pinyin (Qi), meaning is " Represents in Asian philosophy. Vitality " - An invisible energy.
The Qi wireless charging system consists of base stations and mobile devices. The base station contains one or more emitters that provide the energy to be received.
The mobile device contains a receiver that provides power to the load (such as a battery), and the receiver also provides information to the transmitter. An energy conversion unit in the transmitter converts electrical energy into a wireless energy signal, and an energy collection unit in the receiver converts the wireless energy signal into electrical energy. The receiver will deliver power to the load as needed, and the transmitter will adapt the energy transfer according to the needs of the receiver.
Qi charging and wireless charging are two different charging technologies, with the following differences between them:
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Technical standard: Qi Charging is a standard for Wireless charging technology developed and promoted by the Wireless Power Consortium (WPC). Wireless charging is a broader concept that can include other different wireless charging technologies.
Charging method: Qi charging uses the principle of electromagnetic induction to charge, by establishing an electromagnetic field between the charger and the device to transmit energy. Wireless charging can use different technologies, such as electromagnetic induction, magnetic resonance, radio frequency, etc., the specific charging method depends on the technology used.
Compatibility: Qi charging is a widely used standard, and many smartphones, tablets, and other devices support Qi charging. Wireless charging technology has a variety of standards and technologies, and the compatibility between different devices may vary.
Charging efficiency: The Qi charging standard specifies the maximum charging efficiency, usually around 80%. The efficiency of wireless charging technology depends on the specific implementation method and technical standards, and may vary.
In general, Qi charging is a specific wireless charging technology standard, while wireless charging is a broader concept that can include a variety of different wireless charging technologies. When selecting a charging device, it is necessary to pay attention to the compatibility and charging efficiency of the device to ensure that it can be charged normally and obtain a high charging efficiency.
Qi wireless charging technology uses the principle of electromagnetic induction or resonance to transmit power between the device and the charging base through wireless electromagnetic waves, so as to realize the process of charging the device. Compared with traditional methods, it reduces the use of cables and plug and unplug operations, providing convenience.
Different from ordinary Wireless charging technology,Qi wireless charging is a standardized wireless charging technology, launched by the Wireless Power Consortium(WPC), and is currently supported by major mobile phone manufacturers, such as Samsung, Apple, etc., to ensure compatibility between devices.
The difference between qi wireless charging and wireless charging is the universality and versatility of the application. QI certification is the certification of the wireless charging Alliance, which means that your wireless charging is common to all manufacturers. You can't enter the wireless charging market without this certification. Ordinary wireless charging is not suitable for all manufacturers of wireless charging products, each has its own standards are not common.
The difference between qi wireless charging and pd fast charging is that the manufacturer is not the same
Qi is the \"Wireless charging\" standard launched by the Wireless Power Consortium (WPC), a standardization organization that promotes wireless charging technology, which has two characteristics of convenience and versatility.
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pd fast charge is a fast charge specification developed by USB-IF organization, and is one of the mainstream fast charge protocols at present.
First of all, both are wireless charging protocols, QI is the standard charging protocol, as long as there is a QI logo, wireless charging is compatible.