18 5 月, 2024

Manufacturing

Processing Machinery

How to make a homemade wireless charger? Method Explanation

5 min read

Wireless charger refers to a charger that adopts the latest wireless charging technology and does not require traditional charging power cables to be connected to the terminal devices that need to be charged. Some digital enthusiasts want to make their own wireless chargers, so how do you make your own wireless chargers? So far, although wireless charging technology has gradually become familiar to everyone, most smartphones on the market do not support wireless charging function themselves. In fact, wireless charging is not a very complex technology. It just adds a pair of coils inside a smartphone to transmit and receive current, forming a small magnetic field. Therefore, as long as you understand its principle, you can manually add this function to your smartphone through very cheap means. Therefore, DIY’s wireless charging function not only allows us to charge our phones at all times, but also fills us with a sense of achievement. In fact, whether you are an Android, iOS, Windows Phone, or BlackBerry system, the manual DIY wireless charging function is not too difficult, and the cost is not too much. There are now some third-party wireless charging modules available on the market, with receiving coils and circuits built into very thin plastic films.
The wireless charging component purchased on Taobao has already been soldered with the coil and PCB. The isolation distance of this wireless charging component is 0-10mm, with a maximum capacity of 14mm. The input voltage is 12V/QC3.0, and the output is 20W/15W/10W/7.5W/5W for automatic recognition. Moreover, the coil diameter is only 5CM, and the thickness is only 2.2mm, which very meets my requirements. The wooden board is still made of black walnuts, and I have been quite fascinated by this type of wood recently. I have continuously made several small items using black walnuts. I chose a wooden board with a size of 7.5cm, a length of 15cm, and a thickness of 2cm. The size is just slightly larger than the iPhone 13, and I will need to polish it later. The size of the wireless charging component is indeed relatively small, and when compared to the phone and this wooden board, it can be seen that such a small set of coils and PCBs is indeed more convenient to embed into the wooden board. First, let’s test the charging effect. As the distance between the wireless charging components is 0-10mm, the phone can be directly placed on the coil for testing. For some products with higher power, it is strictly prohibited to place the phone directly on the coil for testing. The charging power is displayed as 12V0.8A, which is calculated to be 9.6W. After removing the loss part, 7.5W is still not a problem. Hehe, slag apple!
External module 1. Attach the module to a location close to the MicroUSB interface; 2. Connect the MicroUSB or Lightning interface on the module to the phone; 3. If there is double-sided adhesive on the receiver, it can be directly attached to the back of the phone. If it doesn’t come with it, you’ll have to figure it out on your own; 4. Select the most suitable position and be careful not to let the connecting wire part curl up; 5. Then you can place your phone on the wireless charging dock to experience the wireless charging function. Built in module 1. Open the back cover of the smartphone and take out the wireless charging receiver to prepare it; 2. Or peel off the protective layer of the double-sided adhesive; 3. The next task is to connect the metal shock of the receiver to the smartphone battery, which is the most challenging part of the entire process. However, as long as you are careful and ensure that every metal shock is connected together, you can fix it. After adjusting the position, attach the module to the battery; 4. Cover the back cover of the phone; 5. This is done, and wireless charging can also be carried out.
Firstly, the board of YZX is unprotected, and the 61030 chip it uses is also particularly prone to burning, and it may also burn the touchstone. Therefore, if YZX board is used, the lithium battery must be equipped with a protective board, the boost board should be shielded, and it is best to add a fuse between the output and the touchstone. When the back cover of Dian Jinshi was removed, the removed metal sheet was a good shielding material. Secondly, the touchstone must have a minimum of 1A to move, otherwise it will not light at all. If the power is slightly lower, it is easy to cause a cycle of turning on and then off again. This phenomenon is also closely related to the wire, so it is important to choose good wire and try to keep it as short as possible. Moreover, this phenomenon is also related to the touchstone itself. I was once angered by this issue and bought three stones and five back covers in a fit of anger. Adding the original two stones, I found that in the case of poor material, only one stone was normal, while the other four were bright and broken in a cycle. When switching to a good wire but the wire is very long, there is a cycle where three pieces are normal and two pieces are bright and broken. In the end, when the wire was used well and very short, all five pieces of the 8700 that were renovated were normal, while only four pieces of Chong Xiaowei were normal, and one piece had a bright and broken cycle. And this damn stone can only charge Xiaowei normally with the original charging head and original charging cable, so it has to be placed on the desk. Once again, the final solution only uses a single pole double throw electromagnetic relay, so there is no need to use a 19F, just a 5-pin one, which can reduce the volume by half, so it can be used horizontally and save space. Also, if it’s running from both ends of the home and work unit, you can remove the touchstone back cover on the mobile power supply and add a USB interface. If Xiaowei’s data cable is used, it can also be used as a magnetic suction interface. That would turn into a mobile enhanced version of the touchstone. Finally, you can use a touchstone back cover to transform other things. I also modified a mifi that automatically turns on the wireless network and charges when placed on a touchstone. It’s easy to take away and no longer needs to plug or unplug the damn plug. Touching the stone, just throwing a brick to draw a jade. I believe that the future life of wireless chargers is wireless life, infinite freedom, let all plugs and sockets go to hell.https://www.stoneitech.com/