A Complete Collection of 100000 Whys
Fav十万个为什么
为什么手机充电器发热？
简单的摘要：手机充电器发热的原因主要是电能转换损耗、充电功率高以及环境温度影响。
1、充电器在将交流电转换为直流电的过程中，会因电能转换效率的限制产生能量损耗，这些损耗以热量形式散发，导致充电器发热。
2、充电功率越高，转换过程中产生的热量越多，因此快充模式下的充电器比普通充电器更容易发热。
3、环境温度较高时，充电器散热效率降低，导致其温度进一步升高，同时充电器附近有其他发热源也会加剧发热现象。
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