Hello
I'm trying to charge 18650 batteries using a BMS module.
I wanted to know how the voltage of each battery changes while charging, so I installed a voltage sensor.
First, here's a picture of when only the BMS is connected to the 18650.
It's not the BMS I have, but it's configured like this.
Power is supplied to P+, P- from the DC supply, and
The most negative part of the 18650 battery connected in series is connected to B-, and the most positive part of the 18650 battery connected in series goes to B+.
I have two voltage sensor configurations in mind. Is one of them correct? Or are they both wrong?
The voltage sensor is configured with the voltage sensor in the link below.
Method 1.
Connect all GND of the voltage sensor to the B- side and connect each VCC to the + side of each 18650 battery.
Method 2 is to connect the VCC and GND of the voltage sensor to both ends of each battery.
I had a problem when I connected it to the 2nd line. The wire suddenly turned almost 50 degrees, so I thought something was wrong and immediately disconnected it.
If I want to measure the voltage of each battery, which method should I use, 1 or 2?
Or is there another way?
I want to record how the voltage changes each second. I have a multimeter, but it doesn't connect to the computer, so I don't know which method would be best.
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