This year, Apple first used the wireless charging technology on the iPhone, bringing fire to the entire industry.According to our previous reports, some domestic mobile phone brands have been introduced, or are stepping up research and development with mobile phones with wireless charging capabilities. The release of many brand flagship machine, this market will be completely broke.
It is understood that, In the two or three months after the release of the new iPhone, some of the larger factories needed to produce tens of thousands of wireless chargers a day, so they could not be busy.
As an ordinary consumer, in addition to daily use of wireless charge, more curious about how the wireless charger is produced. SMAMAO digital cat, a wireless charging manufacturer in Shenzhen , With everyone to understand a wireless charger production and processing.
By dismantling can understand that the common wireless full of internal circuit boards and external shell two parts, the wireless charging of the production process will also be introduced in detail from these two aspects.
Above is the empty board without any electronic components, the first will be placed on a fully automatic printing machine brush a layer of solder paste solder paste, flux and other surfactants, thixotropic agent mixture. On the visible components of this wireless charger circuit board up to more than 30 pieces.
The picture above shows the automatic printing machine, and then enters into the next process: SMT SMD SMT full name surface mount technology, widely used in the electronics industry, mainly used in the installation of electronic components without pins or short pins.
SMT placement machine chip, resistors, capacitors, inductors and other components installed in order to brush the solder paste on the circuit board.
Each SMT high-speed SMT machine will be controlled by a small computer, engineers will be based on a wireless charge of the circuit board material design, programming the default operating procedures, thus greatly enhancing the circuit board's SMD accuracy.
Electronic components are mounted in a fixed position and order, and the chip is being installed as shown in the lower right corner of the figure.
Installed circuit board into the reflow soldering machine for reflow the so-called reflow is the heated air or nitrogen blown to the circuit board mounted components to connect the circuit.
The picture above shows that the reflow soldering operation is underway for the lead-free environmental protection process. This is the reflow soldering equipment on the right, with an internal temperature of over 200 degrees.
After brush paste, patch, reflow PCB substrate has become a complete PCBA, this time need to test the PCBA to determine the normal functioning of each part.
The picture shows the use of AOI automatic optical detector PCBA inspection, through the tens of times the magnification, you can graphically view the chip, RC capacitors in the process of whether there are Weld, air welding and other issues.
PCBA board will be tested to be sent to the next process - welding transmitter coil.
Welding transmitter coil this session requires manual operation, the technician can be seen from the left hand there is a blue bracelet, the bracelet has a line to ground, to prevent human body breakdown of high-precision chip.
Next, if the transmitting coil board can detect the normal condition, it will test the working condition of different input voltage here.
The picture shows the voltage and current when the wireless charger is fast charging, 9V / 1.7A.
This process for the aging test, each qualified wireless charge in the factory are required before the power, load and other tests, so that during the testing process will be able to filter out bad products in advance; through the aging test will enter the assembly process, and the poor will Extract to troubleshoot the problem.According to the factory engineer, single-coil wireless charge needs to be 2 hours aging test, double coil is 4 hours.
The picture above shows the wireless charging circuit board after aging test, each piece is neatly arranged with the electronic components facing down, to avoid bumping them during the bump.
Use 3M glue to fix the launch module to the wireless charger case.
The picture shows the already assembled wireless charger semi-finished products, is about to wait for the next assembly steps.
Put on the screw.
A vertical wireless charger with dual coil fast charge is assembled.
The real machine before the factory measured, can be seen from the figure is a Samsung wireless charger .This link is used to exclude the wireless charge compatibility, to ensure that the wireless chargers arrived in the hands of users with the original charger the same performance experience .
Wrapped bubble bags, enhance the protection of wireless charging during transport.
Packed in a box, then circulated around the world, the brand is mosaicked in the light of the factory's customer confidentiality.
Manufacturers of the exhibition hall display a variety of wireless products.
The above is a complete wireless production process, the summed up is empty board printing, SMT chip, reflow, PCBA inspection, welding coil, inspection, aging test, plastic cover, shell assembly, finished product testing, product packaging.
After reading the wireless charge mysterious production process has a detailed understanding?
