Color PCB Coil Wireless Charging Transmitter Base

1nnocent

Color PCB Coil Wireless Charging Transmitter Base [Copy link]

 

I got a qualification for color circuit board proofing from JLC, but I didn't seem to have any good ideas. Later, I remembered that I got a wireless charging base as a gift from EE before. The panel was glass and had the ST logo, but unfortunately, I broke the glass panel at that time. The picture below shows the original appearance of the wireless charging base. When I was in college, I drew a circular PCB with a PCB coil in JLC. The color was black and the ST logo exactly the same as the one in the picture was added to try to make up for that "regret". Now I have the opportunity to try again. The difference this time is that I don't use that logo. Now I just add the picture directly so that it is worthy of the color silk screen .

First, let's take a look at the color circuit board. There are two pads for leading out the PCB coil to the wireless charging module. The pads are easy to affect the appearance in the picture, so they are placed in a more appropriate place based on the characteristics of the picture (think about it, the density of circuit board components is so high, is it useless to make a color circuit board? ).

There are many tools available to calculate the inductance of PCB coils. TI has such a tool. However, since the coil of this wireless charging base is ready-made, we will directly measure the diameter and line width of the coil to draw the PCB coil. The inner diameter of the coil is 20mm, the outer diameter is 42mm, and the wire diameter is 1mm. The PCB coil is directly drawn according to these parameters.

Next is to install the PCB coil. After disassembling the wireless charging base, you need to remove the magnetic isolation sheet from the original coil and fix the magnetic isolation sheet to the PCB coil with a hot melt glue gun:

After that, a piece of the transparent cover needs to be dug out to place the magnetic isolation sheet:

Then use a hot melt glue gun to fix the shell and PCB coil:

Solder the PCB coil to the wireless charging base:

Install each part to see the effect:

The process is basically not difficult, I just want to experience color silk screen printing, after all, it's the first time I've heard of it. Finally, I tried the working situation, attached is the video:

无线充电

Finally, there are two questions:

1. The PCB coil will heat up slightly when charging. Is it because the DC impedance of the PCB coil is high? The original coil is a round coil with a diameter of 1mm, while the PCB coil is just a PCB trace with a rectangular cross section (1mm long and the width is the thickness of the copper foil). Or the inductor value is wrong. There is no instrument to test the inductor, so it is just a guess.

2. I think the function of color silk screen printing is useless. Does anyone have any good ideas? I know that one of the uses of color silk screen printing is to create a joint brand. Just add a pattern of appropriate size in a certain "empty space" on the board. I still think it is not very practical.

dcexpert

Colored PCB is good, and you can use your imagination again

1nnocent

dcexpert published on 2023-3-13 08:49 Colored PCB is good, and we can use our imagination again

It is a bit expensive. Proofing is bound to immersion gold. Proofing costs more than 150

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wangerxian

There is a colorful PCB, so you can directly use the PCB as the outer shell, haha.

dcexpert

1nnocent posted on 2023-3-13 09:23 It is a bit expensive. If you make a proof, it is bound to immersion gold. Proofing costs more than 150.

In that case, DIY is not suitable. I hope there is a cheaper one.

秦天qintian0303

Is this the colored PCB from Jiali Chuang?

1nnocent

Qintianqintian0303 posted on 2023-3-13 10:12 Does Jiali Chuang have colored PCB?

Yes

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1nnocent

wangerxian posted on 2023-3-13 09:35 There are colored PCBs, and you can directly use the PCB as a shell, haha.

Yes, I use this as a shell.

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吾妻思萌

It's full of creativity. Let's open a Taobao store for customization. If you are interested in cooperation, please bring your friends with you.

秦天qintian0303

1nnocent posted on 2023-3-13 14:08 Yes.

Nothing wrong with it except that it's too expensive

1nnocent

Azuma Simeng posted on 2023-3-14 10:10 It is full of creativity. Let’s set up a Taobao store for customization. If you have the intention of cooperation, please bring your friends with you

This customization is not cheap, color silk screen printing is estimated to start at 150+.

My coil is still a little hot, I'll find out the reason later

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吾妻思萌

Azuma Simeng published on 2023-3-14 10:10 It is full of creativity. Let’s set up a Taobao store for customization. If you have the intention of cooperation, bring your friends with you

This customization is not cheap. The color silk screen printing is estimated to start at 150+. My coil is still a little hot. I will find out the reason later.

I'll go back and show you my wireless charger and your ST charger.

wanttrust

I have studied PCB recently.

1nnocent

Azuma Simeng published on 2023-3-15 12:22 This customization is not cheap, color silk screen printing is estimated to start at 150+, my coil is still a little hot, I will find out the reason later. ...

Maybe it's the same

1nnocent

Azuma Simeng published on 2023-3-15 12:22 This customization is not cheap, color silk screen printing is estimated to start at 150+, my coil is still a little hot, I will find out the reason later. ...

Maybe it's the same

吾妻思萌

Look at my wireless charger

吾妻思萌

Does yours flicker green at night?

qwqwqw2088

Add some luminous lights to your ears, and wear them at night to attract more people to turn their heads around.

1nnocent

My wife Simeng posted on 2023-3-21 07:18 Will yours flash green light at night?

Mine is blue light.

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1nnocent

qwqwqw2088 posted on 2023-3-21 07:47 Add some glowing earrings to it, and it will make people turn their heads when they wear it at night

You can think about it, hahahaha

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