It definitely looks like some kind of switched-mode power supply. There's obviously a bridge rectifier at the left side, the transformer seems to be a step-down one, I think the label says "24 V". in the middle there's are multiple chips, each with a series output inductor, and a parallel diode between the ground and the output, this is a textbook buck converter. Notably, the power converter at the top right says "OPTION 11 AMPERE". At the rightmost side of the schematic it shows a battery. I also see +5 V and +12 V labels around here. Finally I can also recognize the word "charger" in the title block at the bottom right.
So yeah, a battery charger implemented by a linear AC-DC power supply, followed by switched-mode DC-DC converters.