The speed of smartphone development can be said to be very fast. And it has become an essential digital product for everyone. Nowadays, the mobile phone is no longer the function machine. That is only used to make calls and send text messages. Our clothes, food, shelter and transportation can basically be done with a smart phone.

Everyone knows that in the era of functional machines used in the past. It is normal for mobile phones to be on standby for more than ten days. At that time, we could not even charge the phone for one to two weeks. But most of the current smart phones are several times the battery capacity in the era of function machines. Now users need to charge one day or even twice a day.

So the problem is coming. At this stage, wireless charger technology has always been a trend in the future development of smart phones. It can only be used as a supplement to wired charging technology. Just because its charging speed is really too slow, and it is charging. The requirements are also relatively high, is wireless charger really better than wired charging?

wireless charger

1, the mobile phone wireless charger works

From small to large, we are used to holding the charger to plug in the socket, charging the phone or computer, thinking of 220V high voltage to carry energy to the phone or computer. For the wireless charger concept of previous years, it is negative, indicating that this is simply fantasy, but for the working principle of wireless, it has given us a charging function.

Wireless charger refers to a charger that is connected to a terminal device that needs to be charged without a conventional charging power cord. The latest wireless charger technology is adopted. By using the magnetic field generated between the coils, the magical transmission of electrical energy, the inductive coupling technology will become A bridge connecting charging base stations and devices.

However, the wireless charger device conducts energy to the charging terminal device, and the terminal device converts the received energy into electrical energy stored in the battery of the device. The principle of energy conduction is inductive coupling, which can ensure no exposed conductive interface. Not only it is possible to omit messy transmission lines between devices, and it is safer for electronic devices. Such as electric toothbrushes that are often in contact with a conductive medium such as a liquid.

Comments: Due to the huge space and high energy consumption, radio waves are used less. In fact, it used mine radios early, and the miniature high-efficiency receiver can receive radio waves transmitted by space. This technology has huge space loss, so generally used only on low-power electronic devices, the distance between the receiving device and the transmitting device should not exceed a few meters. 

2, mobile phone wireless charger and wired charging comparison

Let’s start with the charging time. The charging time of wireless charger and wired charging is different. They are calculated according to the requirements of the wireless charger design. For example, the charging time of the wireless charger cannot exceed one of the wired charging. Hours, and the total time cannot exceed four hours.

When the same mobile phone is fully charged with wireless charging and wired charging, the charging time is obtained. The wired charging time is 110 minutes, and the constant current is 750 mA. The process includes trickle charging, constant current charging and constant voltage charging. The wireless charging time is 150 minutes, the constant current is 560mA, and the whole process also includes trickle charging, constant current and constant voltage current.

As can be seen from this explanation, the comparison results are analyzed. The time for the mobile phone to use wireless charging is 150 points, which is 40 minutes longer than the wired charging time used on the mobile phone, and the total time is no more than four hours. It is hard to imagine that it fully meets the needs of the design.

Comments: Wired charging has developed to the present, although no one has said that the potential has been exhausted, but the development has been obviously limited, in addition to the technology itself, more impact from other aspects, and wireless charging has developed to the present, there are more than ten years of history However, the speed and application of development have not been smooth, but it is undeniable that it shows the infinite charm of people.

3, wireless charging and cable charging who is superior

Since the development of smart phones, wireless charging has planted grass in my heart. I used to oppose wireless charging. Since I started using wireless chargers, I can’t do without this kind of charging method. At the time, I will put one in the office. When I don’t use the mobile phone, I put it on and put it up, which is more convenient than wired charging.

Of course, most companies rely on their own invention patent technology and independent research and development system algorithms to realize the separation design of the induction coil and the power circuit. The charging heat is low, and the temperature rise of the mobile phone is only 5-10 degrees when charging, which is obviously lower than the industry average. It fundamentally guarantees the safety of mobile phone charging.

In addition, the separation technology of charging makes it extremely slim, compact and portable. It is used in the company during the day, and it is used at home in the evening. It does not occupy a place on the table or the bedside table. Because there are indicators on the charging board and the data line interface, when working, The light will be on, and it will be placed along the soft light, the phone will be able to charge, and the light will be soft, without affecting sleep.

Comments: In short, this wireless charging method is not wireless in the strict sense, because it still needs to be in contact with the charger to complete the charging operation, but not completely like the wireless network, but this is not the same as the traditional cable. Wireless Charging comparison is also very convenient.