Wireless charging and wired charging each have their own characteristics in terms of safety. The following is a detailed comparison between the two: 1. Electric shock risk
Wired charging: Due to the need for direct contact with the charging cable and charging interface, there is indeed a certain risk of electric shock if the charger or usage is improper. Especially when using inferior chargers or charging cables, this risk may further increase.
Wireless charging: Adopting contactless charging method, the risk of electric shock is almost zero. Simply place your phone on the wireless charger to start charging, without directly touching any wires or interfaces. 2、 Radiation impact
Wired charging: The radiation generated during wired charging is mainly electric current and magnetic field radiation. Due to the relatively low current and voltage, the impact of this radiation on the human body can usually be ignored.
Wireless charging: Wireless charging requires a magnetic field conversion process, so there is a deliberately increased magnetic field. When used for a long time at close range (such as within 20 centimeters), it may have a certain impact on the human body. However, under normal usage conditions (such as at a distance of more than 20 centimeters), the magnetic field attenuation is severe, and theoretically, radiation has no effect. 3、 Fever situation
Wired charging: The heating situation of wired charging mainly depends on the charging conversion rate and charging current of the device. Under fast charging and high current charging, wired charging may generate more heat. However, due to design improvements in cables and chargers, the heating problem of modern wired charging devices has been well controlled.
Wireless charging: During wireless charging, due to the need to convert electrical energy into magnetic field energy and then into electrical energy, a certain amount of heat is generated. This heat mainly comes from the impedance of the coil and dense winding. Compared to wired charging, wireless charging may generate slightly higher heat. However, due to the fact that users usually do not use their phones during wireless charging, the heat generated by battery discharge is reduced, which to some extent offsets the heating problem of wireless charging. 4、 Charging protection mechanism
Wired charging: Modern wired charging devices are typically equipped with various charging protection mechanisms, such as current limiting, overvoltage protection, and over temperature protection. These mechanisms can ensure the safe operation of the device during the charging process, preventing equipment damage or safety accidents caused by excessive current, high voltage, or high temperature.
Wireless charging: Wireless charging devices also have multiple charging protection mechanisms. For example, some large manufacturers' wireless chargers have QI international certification and built-in protections such as overvoltage, overcurrent, short circuit, and temperature control. These protection mechanisms can ensure the safety during wireless charging. 5、 Other factors
Wired charging: It has relatively low cost and is versatile, supporting functions such as data transmission and series control simultaneously. Wired charging also has advantages in portability and mobility.
Wireless charging: Although wireless charging performs well in terms of convenience, the cost is relatively high. Meanwhile, wireless charging devices may not be as convenient in terms of portability and mobility as wired charging, as they require additional receivers or converters. The charging speed of wireless charging is relatively slow and is affected by the placement of the phone.
Wireless charging and wired charging have their own advantages and disadvantages in terms of safety. Wireless charging performs well in terms of electric shock risk and convenience, but the heat generation may be slightly higher and the cost may be higher; Wired charging has the advantages of low cost, fast charging speed, and multiple charging protection mechanisms, but there are risks of electric shock and certain radiation effects. When choosing a charging method, one should weigh personal needs and usage scenarios.