This article gives you a talk about the wireless charging pcba program development qi standard, as well as the corresponding knowledge points of wireless charging circuit board, I hope to help you, don't forget to collect this site. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1, qi wireless charging international standard detailsIntroduction
1, Qi wireless charging system is composed of base stations and mobile devices. The base station contains one or more emitters that provide the energy to be received. Mobile deviceContains a receiver to provide power to the load (such as a battery), and the receiver will also provide 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.
2, Qi standard, PMA standard. Qi standard: It has two characteristics of convenience and versatility. Different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger. Mobile phones, cameras, computers and other products can be charged with Qi wireless chargers. PMA standard: Wireless charging standard developed in the United StatesWith a number of security protection measures.
3, Qi is the world's first to promote Wireless charging technology standardization organization - Wireless charging Alliance (Wireless Power Consortium, referred to as WPC) launched the "wireless charging" standard, with convenience and versatility of the two characteristics. Different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger.
4, during the test, the receiver needs to establish communication with the transmitter in a short period of time, and charge steadily for 5 minutes under the condition of low battery power. This high standardThe quasi test undoubtedly improves the market competitiveness and user trust of Qi certified products. A wireless charger certified by Qi not only has high-quality performance, but also means that it meets internationally recognized technical specifications and can be widely accepted around the world.
1, the new standard of wireless charging: In-depth analysis of the popularity of Qi certification wireless charging technology is inseparable from strong technical standard support. Qi authentication, full name Qi Wireless Charging is a global Wireless charging standard developed by the Wireless Power Consortium (WPC).
2, wireless Qi test includes Compliance Test (Compliance test) and compatibility test (Interoperability Test), the compliance test is conducted by the ATL (Authorized Test Lab), send 5 samples.
3, Qi standard,PMA standard. Qi standard: It has two characteristics of convenience and versatility. Different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger. Mobile phones, cameras, computers and other products can be charged with Qi wireless chargers. PMA standard: Wireless charging standard developed in the United States, with a number of security protection measures.
4, Qi2, is an innovation in the field of wireless charging. Since its inception in 2008, the WPC Wireless Charging Alliance has been committed to promoting the standardization of wireless charging technology worldwide. The Qi2 standard is based on the Q3 protocol and introduces the MPP protocol and magneticSuction alignment technology, the operating frequency is increased to 360kHz, foreign body detection function is enhanced, and in MPP and EPP mode, to provide 15W efficient transmission capacity, the future is expected to achieve higher power wireless charging.
5, qi2 wireless charging means a new enhanced wireless charging standard. The biggest experience difference QI2 brings to users is that the use of QI2 certified wireless charging devices can provide 15W charging experience to devices that support QI2. WPC sees QI2 as a significant opportunity in 23/24. Qi2 is the WPC Wireless Charging Alliance in 20The new enhanced wireless charging standard established in 23 years.
6, Qi, the full name of the Wireless Power Consortium (Wireless Power Consortium, referred to as WPC) masterpiece, it defines a universal wireless charging standard. This standard is "convenient" and "universal" as the core, ensuring that different brands of products only need to have the Qi logo, can be seamlessly connected with any QI-compatible wireless charger.
1, the distance of the wireless charger can only be effective within the coil range of the charger, more than the distance can not receive charging, each manufacturer's product is different, can not be universal.
2, the technical principle, Qi charger and receiving equipment built-in conductive coil, the electromagnetic field generated after the base is energized will promote the coil in the receiving equipment into electricity, to achieve efficient and convenient wireless power supply. Although the Qi 2 standard supports fast charging up to 15W, the limitation of charging distance (typically a few millimeters to a few centimeters) remains a technical challenge. QiThe two main highlights of wireless charging are its convenience and versatility. 3, we often say that wireless charging actually has great limitations, the effective distance is generally only 8 mm -15 mm, in this range can be normal wireless charging, the so-called space is separated by a mobile phone shell empty only. If there is a metal interval, it will affect the normal charging.
4, low-power wireless charging often uses electromagnetic induction, such as the Qi method of mobile phone charging, but ZTE's electric vehicle wireless charging method uses induction. High-power wireless charging is often resonant (most electric vehiclesThe power supply device (charger) transmits energy to the electrical device, which uses the received energy to charge the battery and at the same time for its own operation.
5, of course, the range of this non-radiating electromagnetic field is more limited, not suitable for long distances, requiring the transmitting end and the receiving end to be within 8 times the radius of the induction coil. We all know that electromagnetic waves can be used to transmit information, so in theory, as long as the frequency is high enough, it can also transmit energy.
6, but the efficiency can not reach 100%, the transmission distance is not far, generally not more thancba program development qi standard and wireless circuit board introduction to the end of this, do not know you find the information you need? If you want to know more about this, remember to follow this site. < / p >