EL15 two-string battery PD QC FCP AFC multi-protocol fast charging module

Use the FS312 chip for PD QC FCP AFC multi-protocol deception, then use XL6009 to build a boost circuit to raise the voltage to 12v (in order to be compatible with 5v, 9v multi-levels and increase versatility) and finally use the PW4203 charging chip to charge the battery.
This solution has There are two modes, one does not use a boost chip and directly deceives 12v. If it does not support 12v, it decoys 9v. If it does not support it, it deduces 5v. However, if it cannot be charged when 5v is input, the other mode uses a boost chip to decoy 9v. 5v, unified boost to 12v to charge the charging chip.
When the boost chip is not used, just connect pads 2-3-4 of the boost chip, and then directly short-circuit the two pads of diode d1 (this diode is not used).
In this design, a dual charging charger can be built by adding a charging chip and reducing the current sensing resistor structure. However, since dual charging recommends fast charging of about 30W, in order to ensure versatility, dual charging is not used.
The charging interface is soldered from the back. It has been verified that it is consistent with the EL15 Nikon charger interface. You can search on tb - blade connector battery battery male 5pin pitch 2.0PH high 5.3H
Canon, Sony and other manufacturers should have the same principle. I do not have related equipment. , cannot be developed, sorry.
My ability is limited and there may be some problems with the circuit. Corrections are welcome, and capable people are also welcome to develop it into products.