On February 20, it was reported that the Ministry of Industry and Information Technology recently released a "Interim Provisions on Radio Management of Wireless Charging (Power Transmission) Equipment (Draft for Comments)", which stipulates the technical requirements for portable wireless charging equipment and electric vehicle wireless charging equipment.
Among them, the use frequency of mobile and portable wireless charging equipment is 100~148.5kHz, 6765~6795kHz, 13553~13567kHz, and the rated transmission power is required to be less than 50W.
It is obvious that the transmission power regulations for mobile and portable wireless charging devices may directly affect some domestic mobile phones with high-power wireless charging as their selling point. If the new regulations are officially implemented, the maximum specification of the output terminal of mobile phone wireless charging may be frozen at the level of 50W.
At present, the launched Xiaomi 11, Xiaomi 10 Premium Commemorative Edition and Glory V40 all support wireless charging up to 50W (the maximum output of Xiaomi charger terminal is 55W), and it is rumored that Xiaomi 11 Pro will support 67W wireless charging scheme; Before that, Xiaomi also released the 80W wireless second charging scheme that has not been mass produced, and OPPO also released the 65W AirVOOC wireless flash charging scheme last year.
Article 8 of the new regulation also stipulates that it is prohibited to use wireless charging equipment in ships, aircraft and within the protection distance of the radio observatory site. Article 9 stipulates that the wireless charging equipment product description should include parameters such as wireless charging mechanism, rated transmission power, operating frequency range, performance criteria of the receiver and acceptable performance degradation level of the receiver.
This provisional regulation of the Ministry of Industry and Information Technology will be open to the public for comments before March 20, 2022. The wireless charging equipment produced and sold in China from January 1, 2022 will be subject to this regulation, while the equipment that has been put into use before the release of this regulation and whose technical indicators meet the regulations of the Ministry of Industry and Information Technology "can be used until scrapping in principle".
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