H ELECTRICITY
H02 GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
2207/00 Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J2207/20 Charging or discharging characterised by the power electronics converter