4. Some content will be updated first in the [Strange PCB Collection Project]

Using IP3255AAV as battery pack protection board

Use EUP3467, a DCDC chip with built-in CCCV and wide voltage range input, as the battery pack charging circuit, with a maximum charging current of 4A

Protection board overcurrent detection does not exceed 10A, 2.7V undervoltage protection, 4.25V overcharge protection

Unique battery + protection + discharge circuit PCB design

This project is a continuously updated project, so stay tuned!

(The above are the first test messages from 5-23)

5-24 update: There are some questions about the setting of charging speed. We are investigating. The main reason is that the charging current is not large enough. In addition, the structural idea of ​​the mobile power supply is PCB + copper pillar stacking + acrylic side inlay. The appearance of each layer of PCB The same, and then lay out and stack the required functions on the PCB to achieve the final goal

Updated 7-14

Immediately make 4 and +5358 finished products!

Update 7-15: The four-parallel 18650 battery pack is paired with IP5358, but the circuit schematic needs to be corrected, and there are some minor omissions.

7-28 update

Fast charging successfully triggered Huawei 9V2A. The PCB has been updated to the V7 version. Please pay attention.

8-1 update

Complete body under V7PCB master control