The two PCbas are connected by row pins, and the gap between the PCbas is filled by thermal pads

The two PCbas are connected by row pins, and the gap between the PCbas is filled by thermal pads

The battery is fixed inside the frame to form a battery pack, which is connected to the protection plate through a nickel band. The frame and battery are fixed to the inside of the shell by glue, and the inner battery pack is removed after the shell is cut. The two PCbas are connected by a row needle, and the gap between the PCbas is filled by a thermal pad to fully dissipate heat, increase the heat capacity and reduce the temperature rise.

The battery protection board is welded with a battery protection chip, battery meter chip, battery protection tube, current sampling resistor and equalization resistor, and equalization MOS tube.