After lifting the 50W seal, wireless charging ushered in the era of high speed and high power

Before the article begins, I would like to ask you two questions: Are you using a wired charger, a cradle-mounted wireless charger, or Apple's Magsafe when charging? If there is such a mobile phone that supports 100W wireless charging, but its wired charging power is lower than 100W, would you consider using wireless charging instead of wired charging?

(Source: @digitalchatstation)

In many Among charging technologies, wired charging is definitely the most popular and the fastest charging speed. Wireless charging is also loved by many users because of its convenient and convenient features. Of course, the development of charging technology is often accompanied by opportunities and challenges, and wireless charging technology is no exception.

(Source: Xiaomi)

The development of wireless charging, It once stopped at 50W

#In recent years, two major breakthroughs have been made in the field of wireless fast charging. One is a breakthrough in charging methods, and the other is a breakthrough in charging power.

# Let’s start with the changes in charging methods, which involves Apple’s Magsafe magnetic wireless charging technology. In 2020, Apple released the iPhone 12 series of mobile phones. The biggest difference from past iPhones is that it is equipped with Apple’s self-developed Magsafe magnetic wireless charging technology for the first time. The wireless charging power can reach 15W, and it also supports the 7.5W Qi protocol. Wireless charging.

(Source: Apple)

The existence of wireless charging in the past A very big problem is that the phone needs to be placed on the wireless charger to charge, which is very inconvenient. However, with MagSafe magnetic charging, you can charge iPhone 12 in real time by attaching MagSafe accessories to iPhone 12. This solves the problem of being unable to use your phone at will during wireless charging, making wireless charging as convenient as wired charging.

It can be said that the birth of Magsafe provides a brand new solution for wireless charging of mobile phones. It not only solves the pain points of traditional wireless charging, but also accelerates the popularity of wireless charging, allowing more users to start using wireless charging.

(Photo source: Xiaomi)

In addition to the wireless charging method In addition to breakthroughs, various manufacturers have also made great efforts to improve the charging power of wireless charging.

Among them, Xiaomi has the most outstanding performance in fast charging. As a leader in fast charging technology, Xiaomi has made many industry-leading breakthroughs in wireless fast charging technology. From the world's first 50W wireless fast charging Xiaomi Mi 10 Extreme Commemorative Edition, to later Xiaomi Mi 11 Pro/Ultra became the first mass-produced model to support 67W wireless fast charging.

## (Photo source: Xiaomi)

August 2021, Xiaomi has released a new generation of Mi MIX 4, which this time has achieved 100W ultra-fast wireless charging (due to policy reasons, it was finally changed to 50W wireless charging). Honor also implemented 100W wireless fast charging technology the following year. The overseas version of Honor Magic 4 Pro became the second mobile phone in the world to support 100W wireless charging, demonstrating its strength in wireless charging technology (the domestic version is 50W wireless charging). Charge).

## (Source: Honor)

To ensure fast charging Hot, the total internal heat dissipation area of ​​Xiaomi MIX 4 is as high as 11588mm², and a graphene vapor chamber is also added. When charging at room temperature, the temperature of the phone will not be higher than 37 degrees. The Honor Magic 4 Pro also has a similar design, using a superconducting hexagonal graphene VC liquid-cooled three-dimensional heat dissipation system to ensure heat dissipation of the phone.

(Source: Glory)

Innovation in wireless fast charging technology is the key to promoting its development. In this process, major manufacturers continue to improve the wireless fast charging charging experience by developing new technologies, improving circuit design, and increasing battery capacity. At the same time, the formation of wireless fast charging standards is also necessary to ensure compatibility between mobile phones of different brands. However, apart from the Qi protocol, there are basically no other unified protocols in the field of wireless charging.

(Source: Wireless Power Consortium )

In 2020, Xiaomi Mi 10 Extreme Commemorative Edition increased the wireless charging power to 50W. Just one year later, Xiaomi MIX 4 doubled the wireless charging power record to 100W. Of course, the rapid development of wireless charging is naturally restricted by relevant policies.

In 2021, the Ministry of Industry and Information Technology announced the "Interim Regulations on Radio Management of Wireless Charging (Power Transmission) Equipment (Draft for Comments)", requiring mobile and portable wireless charging equipment The rated transmission power does not exceed 50W, which limits the upper limit of wireless charging power for all portable devices.

(Source: "Interim Provisions on Radio Management of Wireless Charging (Power Transmission) Equipment (Draft for Comment)")

At that time, many people expressed disbelief in this policy and believed that it restricted the development of wireless charging. However, wireless charging will generate radio waves during use, and radio is a public resource. It is necessary to avoid interference with legal radio services and maintain the order of air waves. In addition, since wireless fast charging technology involves electromagnetic radiation and safety issues, it also needs to comply with relevant regulations and standards.

The biggest obstacle to the popularity of wireless charging is price and experience

But no matter what, for consumers or For mobile phone manufacturers, the research and development of high-power wireless fast charging technology has more advantages than disadvantages. First of all, wireless charging does not require plugging in, making the charging process more convenient. Secondly, the existence of high-power wireless fast charging of more than 50W makes the wireless charging speed of mobile phones comparable to wired charging, completely solving the user pain point of too slow wireless charging speed in the past.

## (Photo source: @新光精品review)

The same is true for manufacturers. First of all, high-power wireless charging adds a new selling point to mobile phones. For example, MIX 4 and Magic 4 Pro, although their 100W wireless charging has not been implemented in China, it undoubtedly adds a lot of gimmicks. For Apple, the development of Magsafe has made more and more Apple users fall in love with wireless charging, and the official has also sold a lot of accessories.

(Source: Xiaomi)

Of course, high-power wireless There are also individual problems with charging. For now, the biggest issue is consumer acceptance.

Although high-power wireless fast charging technology brings many conveniences, users need to spend extra money to purchase specialized wireless chargers, and most wireless chargers still require the phone to be left standing It can only be charged and the experience is not good enough. Therefore, currently only a few users are willing to use wireless charging to charge their mobile phones.

## (Source: "Global Wireless Charging Industry Research and Trend Analysis Report")

Therefore, for the current wireless charging market, what manufacturers need to do most is to popularize wireless charging and bring down the price of wireless charging equipment so that more users can use more affordable prices. Fast wireless charging device. Of course, if a manufacturer can provide a solution similar to Apple's Magsafe, it can make the use of wireless charging more convenient, and it may also be a good way to popularize wireless charging.

Written at the end

Last year, good news came in the field of wireless charging. On May 30, 2023, the 50W wireless charging restriction was finally relaxed. According to the latest document "Interim Provisions on Radio Management of Wireless Charging (Power Transmission) Equipment" issued by the Ministry of Industry and Information Technology, the wireless charging power of mobile and portable wireless charging equipment will be relaxed to 80W. .

(Photo source: "Interim Provisions on Radio Management of Wireless Charging (Power Transmission) Equipment")

As soon as the news was released, manufacturers soon began to follow up with faster wireless charging power for mobile phones. Honor Magic 6 Pro has also become the first new phone with a wireless charging power greater than 50W after the new regulations were released, achieving 66W wireless charging. According to the news from technology blogger @digitalchatstation, Xiaomi will also release a new 80W/100W wireless charger in the future, and the new phone may support 80W wireless charging.

(Source: Glory)

In general, mobile phone wireless fast charging technology has experienced a development process from scratch, from slow to fast. Major manufacturers have made important contributions to technological breakthroughs and promoted the progress of the entire industry. However, the development of technology is not smooth sailing. Policy restrictions and security issues require manufacturers to adapt or solve them. In the future development process, manufacturers need to continuously optimize the wireless charging experience to achieve the sustainable development of high-power wireless fast charging technology.

Looking to the future, with the continuous advancement of technology and the continuous expansion of the market, high-power wireless fast charging technology is expected to usher in a broader development space. I hope that in the near future we can enjoy a faster, safer, and more convenient mobile phone charging experience. I believe that this day will come sooner or later!

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