Maybe Many friends have found that the mobile phone charger adapter is hot when charging, so they are worried that if there will be problems and cause the hidden danger. This article will combines the charging principle of the charger to talk about its related knowledge.
Is it dangerous that the cellphone charger become hot when charging?
The answer is “dangerous”. Even if any powered device does not generate heat, there will be risk, such as leakage, poor contact, spontaneous combustion and explosion, etc. Mobile phone chargers are also no not the exception. If you often browse the related information, you will often see fire news which caused by mobile phone chargers problems like overheating then spontaneous combustion. But this is only a small probability problem. Compared with the quantity of using base, the probability of danger caused by the charger itself almostly can be ignored.
The principle of mobile phone charger.
The principle of the mobile phone charger is not as complicated as imagined. The rated voltage of civilian use in my country generally will be AC100-240V, and the magnitude of the current is closely related to the voltage. This kind of power cannot directly charge for the the mobile phone. Need to use a buck and voltage regulator to convert it into suitable voltage for mobile phones,generally will be 5V.(related to the lithium battery used in the mobile phone,for example if 18W super charge,will be 9V/2A). The function of the cellphone wall charger is convert the voltage of 200V into 5V voltage, and strictly control the current for cellphone.
In addition, the output voltage and current of the charger are not fixed. Generally it will be based on the different charging protocol. The most normal one will be 5v/2a,namely 10W we said.While for smart cellphone,will have different fast charging protocol. And also almost fast chargers have a smart charging function, which will automatically adjust the charging voltage and charging speed according to the charging status and power status of the mobile phone. For example if PD 20W chargers,the max speed will be 9v/2.22A. If smart phone only have 5% power,the charging speed will be the max 9v/2.22A,namely 20W,while if charge to 80%,the charging speed will drop to 5V/2A.
Why does the chargers will be hot when the mobile phone is charging?
Simply to say:because the input power voltage is too high and the current is large. the charger will reduce the power and limit the current through transformers, voltage stabilizers, resistors, etc. Whilte during these conversion process, will naturally generated heat. The shell of the charger is generally made of hard plastic with high heat dissipation like ABS or PC, which can help the internal electronic components to conduct heat to the outside. Well,in the normal working environment, the heat emitted by the charger is related to the output voltage and current. For example,when the mobile phone is activated fast charging mode,when the user charging and playing mobile phone at same time,will cause the charger to become overloaded and hot.
In a world,when the mobile phone is charged normally, the charger will heat up, but generally it will not be very hot. But if the user uses the mobile phone during charging, such as playing games or watching videos, this will cause the mobile phone and the charger both be hot.
Conclusion: It is normal phenomenon for to cause heat during charging.but if it is too hot, especially when it is not connected to the mobile phone, you must be vigilant.The possible reason will be poor contact with the socket, or the internal electronic components be damaged, which may cause the spontaneous combustion or explosion.As far,the probability of explosion is almost zero. In most cases, it is caused by the user charging while playing with the mobile phone. The fast charging mode will only cause the charger to heat up, but not be hot.
Fellow IZNC,we will share more news of chargers.
Contact Sven peng(Cell/whatsapp/wechat: +86 13632850182 ),will offer you safe and strong performance chargers&cables.
Post time: Mar-24-2023
