Switch tube protection circuit of on-load switch, battery management system and power supply equipment

The utility model discloses a switch tube protection circuit of an on-load switch, a battery management system and power supply equipment, and the circuit comprises an energy storage device access end which is used for accessing an energy storage device; the charging and discharging access end is used for accessing a load/charger; the plurality of current limiting circuits are connected in parallel between the energy storage device access end and the charging and discharging access end, and the current limiting circuits are used for limiting the flowing current; a plurality of switch circuits, each of which is connected in series between the charging and discharging access end and one of the current limiting circuits; and/or each switch circuit is connected in series between the access end of the energy storage device and one current limiting circuit; wherein the switching circuit is used for controlling the energy storage device access end to be electrically connected with the charging and discharging access