Mobile phone fast charging enters the 300W era! Review the development history of mobile phone fast charging

The battle for fast charging technology has never ceased. Realme will soon demonstrate the world’s first 300W super flash charging technology, but this technology will not be first installed on the Realme GT7 Pro.

This time realme is about to launch a 300W smartphone wired charging solution. It is not the world’s first 300W fast charge – as early as February 2023, Redmi was the first to announce the 300W “Magic Second Charge” technology. However, the technology of this project Exploring means more.

According to the technical introduction video at the time, the Redmi Note 12 Pro+ used for display could charge the 4100 mAh battery from zero to zero in 5 minutes, but more than a year has passed since that launch, and so far there has not been a single This Redmi phone actually uses this 300W charging technology.

But from a certain level, realme’s 300W seems to be more feasible for mass production this time. Realme GT5 and GT Neo5 both have 240W wired fast charging versions, which can be fully charged in 10 minutes.

In fact, in June this year, Wang Shuo, realme brand marketing director, revealed in an interview that realme was testing 300W charging technology.

But @digitalchatstation also pointed out that realme did test 300W super flash charging, but there is currently no trace of implementation and the battery capacity is really not large. He believes that the next general direction for fast charging of smartphones is 100W/120W, and at the same time, the 6000mAh silicon anode battery should be made as relatively thin and light as possible.

Looking back at the development of smartphone fast charging technology, it can be said that it has changed rapidly in more than 10 years. As an indispensable electronic product in modern people's lives, smartphones have long been closely integrated with people, and battery life anxiety has been further amplified after the popularity of non-removable batteries. Therefore, in the two technology trees of fast charging and large batteries, Manufacturers have begun an "arms race" to catch up with each other.

In 2007, Apple released the original iPhone. This epoch-making product that redefined mobile phones had a 5W charging power. It may be said that it is not worth mentioning now, but for smartphones at the time, this speed was fast enough.

In 2010, the USB standardization organization USB IF released the USB BC 1.2 protocol, achieving a charging power of 7.5W according to the 5V1.5A standard.

After a long period of calm, Qualcomm launched Quick Charge 1.0 technology in 2013. The charging power at that time was what we know as "Five Fu One An (5V2A)", that is 10W.

Looking at it now, it is hard to imagine that the charging power of smartphones has only increased by 5W in 6 years, but it is undeniable that between 2007 and 2013, many manufacturers began to be brutal on the smartphone track. Growth began with the initial accumulation of talents and technology. Apple is leading the world with iPhone 4 and other models, Samsung is rising strongly, China Cool Alliance is all-powerful, and Xiaomi and Meizu are emerging, creating a state of vitality and competition for all things.

In 2015, there was a well-known advertising slogan - "Charge in 5 minutes, talk for two hours", which made OPPO's fast charging technology a household name in one fell swoop. In the previous year, OPPO's VOOC flash charging technology increased the fast charging power to 20W. It was also from 2014 that Green Factory's charging technology began to be at the forefront of the industry and has repeatedly led the development of fast charging technology.

In 2014, Qualcomm’s Quick Charge 2.0 technology came out. Due to the Micro USB 2.0 interface and power cord widely used by Android phones at the time, it could only withstand a current of 2A. It achieved a charging power of 18W by increasing the voltage; although It’s not as fast as OPPO’s 20W fast charger, but it’s better in terms of compatibility and low cost. However, it inevitably causes problems such as low charging efficiency and high heat generation.

In the few years after 2014, various manufacturers also increased their R&D investment and technology upgrades in the field of fast charging, and a number of fast charging technologies with good performance emerged. For example, MediaTek Pump Express fast charging technology, Huawei Super Charge Protocol technology, Meizu Super mCharge fast charging, Xiaomi ChargeTurbo flash charging technology, vivo FlashCharge technology, Samsung FastCharge technology, etc.

Although Type-C interfaces are becoming popular during this period, and the Android camp has basically realized the unification of interfaces, these private protocols have also become barriers between various brands, and "non-family members" cannot enjoy full power. The charging speed also increases the user cost.

国内メーカーが徐々に充電出力を高め、50W、65W、100Wを超える急速充電技術が徐々に登場したのもこの時期でした。この時期、AppleのiPhone充電も徐々に遅れ、最終的には10Wの充電を18W、27Wと段階的に引き上げた。

そして2019年から2022年にかけて、国内メーカーの充電速度は急速に向上しました。 2022年に、OPPOは150Wスーパーフラッシュ充電テクノロジーの寿命バージョンを正式にリリースし、iQOO 10 Proには初めて200W超高速充電が搭載され、Redmi Note 12 Discovery Editionでは210W高速充電が使用され、200Wのマークを突破します。

2023 年に、realme GT Neo 5 は充電電力を 240W に引き上げます。これは、これまでの量産で最も強力な急速充電技術でもあり、「30 秒で充電し、2 時間通話」を実現します。 2023年3月、Xiaomi Groupの創設者Lei Junは、Redmi Note 12 Pro+魔法の修正版の充電ビデオをWeiboで公開しました。

ビデオ表示によると、4100mAh バッテリーは約 2 分 13 秒で 50% まで充電され、約 4 分 54 秒で 100% に達します。フル充電には 5 分もかかりません。

このビデオは1年後に見てもまだ非常に誇張されていますが、300Wの急速充電が量産モデルに採用されていないのはRedmiにとって残念です。当然のことながら、これは最初の300Wの公式量産モデルです。商用モデルは、急速充電ソリューションのタイトルをrealmeが獲得します。

テクノロジーの進歩により、スマートフォンを使用する私たちの体験は豊かになりました。最初の 5W の充電電力から、Realme がまもなく実証する 300W スーパーフラッシュ充電テクノロジーに至るまで、これはメーカーの取り組みの結果であるだけでなく、効率的な充電ソリューションに対する消費者の需要も反映しています。

しかし、充電性能の向上は充電電力の向上に反映されるだけではありません。充電技術の開発には課題がないわけではありません。バッテリー容量の制限、充電効率と発熱のバランス、異なるブランド間の充電プロトコルの壁など、問題は克服する必要があります。高出力の急速充電だけでは決して最適な解決策ではありません。高出力+大容量バッテリーはバッテリーの不安を解決する「二重の解決策」です。

Type-CインターフェースはAndroid、iOS、Hongmengを統合し、PD急速充電は240Wをカバーでき、UFCS統合急速充電の推進には現在一定の抵抗がありますが、ゆっくりと発展しています。

テクノロジーが成熟し続け、標準化が進むにつれて、スマートフォンの充電テクノロジーはより安全で効率的になり、ブランド間の互換性を実現し、無意味な障壁や巻き込みを打破し、業界の長期的な健全な発展を達成できると私は信じています。

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