Qi fan fan: Active cooling really works, and could clear the way for a 50W wireless charging standard.

Qi 风扇：主动散热确实有效，或将为 50W 无线充电标准铺平道路。

Despite my initial skepticism, I’m now sold on wireless Qi chargers that add integrated fans to keep your phone cool while charging. I figured they’d be too loud, or too weak, or too gimmicky, but I’m a convert after spending a week with the new $59.99 Kuxiu D5 Qi2.2 charging dock. Its active cooling system has kept my phone from heating up, unlike every other Qi charger I’ve tried. Good thing, given my own history with an overheating phone.

尽管我最初持怀疑态度，但现在我已经成为了内置风扇、能在充电时为手机降温的 Qi 无线充电器的忠实拥趸。我原以为它们会太吵、功率太弱或只是噱头，但在使用新款售价 59.99 美元的 Kuxiu D5 Qi2.2 充电座一周后，我被彻底折服了。与我尝试过的所有其他 Qi 充电器不同，它的主动散热系统成功防止了我的手机过热。考虑到我曾经有过手机过热的惨痛经历，这确实是一件好事。

Last year I fried the logic board on my titanium iPhone 15 Pro. I was on a sweltering train and trying to edit a 4K video on my phone, which was charging from a magnetically attached Qi power bank. Oof, my iPhone is getting really hot, I thought, just as the screen went forever blank. The repair bill was €660.33 (over $750), for which I paid nothing because it was just inside the two-year warranty. Apple’s “genius” wouldn’t say if the phone overheated, but I’m not keen to tempt fate twice.

去年，我烧坏了钛金属版 iPhone 15 Pro 的逻辑主板。当时我正坐在一列闷热的火车上，用手机编辑一段 4K 视频，而手机正通过磁吸式 Qi 充电宝充电。就在我心想“糟糕，手机变得好烫”时，屏幕瞬间黑掉，再也没能亮起。维修费用高达 660.33 欧元（超过 750 美元），好在手机还在两年保修期内，我没花一分钱。苹果的“天才吧”员工不愿确认手机是否因过热损坏，但我可不想再冒第二次险。

Heat is the enemy of batteries. High temperatures accelerate the chemical degradation of lithium-ion cells, permanently reducing how much charge they can hold over time. The electromagnetic induction employed by Qi chargers is inherently inefficient, producing far more heat than transferring electricity through a cable plugged into your phone. That heat can cause phones to throttle the wireless charging speed in order to protect the battery.

热量是电池的天敌。高温会加速锂离子电池的化学降解，永久性地降低其蓄电能力。Qi 充电器所采用的电磁感应技术本身效率较低，产生的热量远高于通过线缆充电。为了保护电池，手机往往会因为这些热量而降低无线充电速度。

Despite knowing this, I keep coming back to Qi charging docks and power banks because they’re so damn convenient. I’m also addicted to Apple’s StandBy feature that turns my phone into a desk or bedside clock and widget machine when docked and charging in landscape orientation.

尽管深知这一点，我还是离不开 Qi 充电座和充电宝，因为它们实在太方便了。我还沉迷于苹果的“待机显示”（StandBy）功能，当手机横向放置在充电座上时，它能瞬间变成桌面时钟或床头小组件显示屏。

Fortunately, companies like Anker, Aukey, ESR, and Kuxiu have started building active cooling systems directly into their Qi chargers. They feature tiny heat sinks and ultra-quiet internal fans that actively blow the heat away from the back of your phone while it charges. This keeps the battery significantly cooler and allows for faster charging speeds. Powerful magnets ensure perfect alignment between the phone’s receiver coil and the charger’s transmitter coil to maximize efficiency and minimize heat waste.

幸运的是，Anker、Aukey、ESR 和 Kuxiu 等公司已经开始将主动散热系统直接集成到 Qi 充电器中。它们配备了微型散热片和超静音内置风扇，能在充电时主动将热量从手机背面吹走。这能显著降低电池温度，从而实现更快的充电速度。强力磁铁确保了手机接收线圈与充电器发射线圈的完美对齐，从而最大限度地提高效率并减少热量损耗。

The fan inside the Kuxiu D5 operates silently, but it can still be turned off if you want. The display is useful, but the little winky-faced screensaver is not. I do like knowing the time and how much charge each device is pulling, in addition to the total power draw, but the animated movement is distracting when caught out of the corner of my eye. It’s also a bit too bright for my taste when perched on my nightstand. Fortunately, I can turn the display off with a tap of a button.

Kuxiu D5 内部的风扇运行非常安静，但如果你愿意，也可以将其关闭。显示屏很有用，但那个眨眼的屏保动画就没必要了。我确实喜欢查看时间、每台设备的充电功率以及总功率，但余光瞥见动画时会感到分心。而且当它放在床头柜上时，亮度对我来说有点太高了。好在只需按一下按钮，我就能关闭显示屏。

I like that the Kuxiu D5 ships with a 45W USB-C PD charger in the box. Otherwise, you’d have to guess if whatever charger you have lying around will support the dock’s max total output, which can deliver up to 25W to Qi2.2-compatible phones, 2.5W to Qi-compatible watches, and 5W to Qi-compatible earbuds. It’s compatible with several generations of phones, watches, and earbuds sold by Apple, Samsung, and others.

我喜欢 Kuxiu D5 包装内附赠的 45W USB-C PD 充电器。否则，你还得费心去猜手头的充电器是否支持该底座的最大总输出功率——它能为兼容 Qi2.2 的手机提供最高 25W 的功率，为兼容 Qi 的手表提供 2.5W，为耳机提供 5W。它兼容苹果、三星及其他品牌的多代手机、手表和耳机。

Kuxiu calls the D5 a “5-in-1” charger, which I find misleading since it’ll only charge up to three devices simultaneously. It seems to include the display and fan in its total. By that count, I’d be happier if this was a 4-in-1 device, since the added cost for the display won’t add much value for most people, and it can only cause issues down the road.

Kuxiu 将 D5 称为“五合一”充电器，我觉得这具有误导性，因为它最多只能同时为三台设备充电。它似乎把显示屏和风扇也算进去了。照这个逻辑，我宁愿它是一款“四合一”设备，因为显示屏增加的成本对大多数人来说价值有限，而且未来还可能引发故障。

The watch charger is also a little silly in its over-engineering. A long-press on the dock’s sole button kicks off a tiny motor to slowly push the watch dock out the side. I guess it adds to the blocky dock’s durability when traveling, but not by much, and it can only be retracted when the dock is plugged into the wall.

手表充电器的过度设计也显得有些滑稽。长按底座上唯一的按钮，会启动一个小马达，缓慢地将手表充电支架从侧面推出来。我想这可能增加了底座在旅行时的耐用性，但作用有限，而且只有在底座接通电源时才能收回。

Overall the Kuxiu D5 is a fine Qi2.2 charging dock made better by active cooling. It’s equally at home on a desktop or nightstand, and priced below similar docks from Anker, ESR, and others.

总的来说，Kuxiu D5 是一款优秀的 Qi2.2 充电座，主动散热功能让它如虎添翼。它既适合放在办公桌上，也适合放在床头柜上，而且价格比 Anker、ESR 等品牌的同类产品更具竞争力。

Active cooling on Qi chargers is a good idea whose time has come. Phones sold by Huawei, Xiaomi, and Oppo have supported wireless charging speeds of 50W and above for years. But that’s only possible when placed on proprietary charging docks capable of whisking away all the extra waste heat. Now the body responsible for Qi is working on a global 50W standard for release by 2028. Manufacturers will likely need to adopt active cooling to reliably sustain those higher charging rates. Fine by me. Whatever it takes to keep that vital Qi life force flowing.

Qi 充电器的主动散热是一个顺应时代的好主意。华为、小米和 OPPO 等品牌的手机多年来一直支持 50W 及以上的无线充电速度。但这只有在配合能够带走所有额外废热的专用充电座时才能实现。目前，负责 Qi 标准的机构正在制定全球 50W 标准，预计于 2028 年发布。制造商很可能需要采用主动散热技术，才能可靠地维持这些更高的充电速率。我对此表示欢迎。只要能让那股至关重要的 Qi“生命力”源源不断地流动，一切都是值得的。