1, there are four basic principles of wireless charging, namely electromagnetic induction charging, magnetic resonance charging, radio wave charging, electric field coupling charging, the mainstream standards on the market mainly Qi standard, PMA standard, A4WP standard, iNPOFi technology and Wi-Po technology. Let's take a look at the principle of wireless charging.
2, the current mainstream wireless charging standards areThree: Power Matters Alliance (PMA) Standard: The Power Matters Alliance standard is initiated by Duracell Powermat, which is a joint venture between P&G and Powermat, a wireless charging technology company, and has a relatively outstanding comprehensive strength. In addition, Powermat is a supporting member of the Alliance for Wireless Power (A4WP) standard.
3, mainstream wireless charging standardThe popularity of wireless charging technology cannot be separated from the support of strong technical standards. Qi Certification, full name Qi Wireless Charging, is a global Wireless charging standard developed and implemented by the Wireless Power Consortium (WPC).
2, wireless Qi test includes Compliance Test (Compliance test) and compatibility test (Interoperability Test), compliance test by the compliance test experiment ATL (Authorized Test Lab), 5 samples were sent for testing.
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. The WPC Wireless Charging Alliance, founded in 2008, is dedicated to pushingGlobal standardization of wireless charging technology. Based on the Qi 3 protocol, the Qi2 standard introduces the MPP protocol and magnetic alignment technology, the operating frequency is increased to 360kHz, the foreign body detection function is enhanced, and the MPP and EPP modes provide 15W efficient transmission capacity, and the future is expected to achieve higher power wireless charging.
22, the International Society of Automotive Engineers (SAE International has released its new wireless charging standard for electric vehicles, J2954. According to the official introduction, this is the first global wireless charging standard, which specifies the electric vehicle and Supply Equipment (EVSE) ground system requirements for wireless charging of electric vehicles in a single document.
It is reported that SAIC Roewe Marvel X, known as the world's first pure electric vehicle to achieve wireless charging, is currently not accepted by users. Therefore, the 11 kilowatt high-power wireless charging technology of Zhiji automobile not only costs more, but also does not really solve the charging efficiency in terms of charging efficiencyKey problems, so whether it can be widely recognized by users still need to make a question mark.
At present, limited information can be learned, and the official name has not yet been announced, but the official revealed that the mileage of the Zhiji car is nearly 1000km, and the sword has just released the NiO ET7. In the official news, the details that can be obtained have a new battery technology, which is jointly developed by SAIC and Ningde Times, known as the silicon-doped lithium battery technology, which is known to never spontaneously ignite and is equipped with the world's first mass production equipment 11kW high-power wireless charging.