The invention belongs to the technical field of direct-
current electric small trains, and relates to a circuit control structure and a battery cabinet for a direct-current pure electric small
train. The circuit control structure comprises a storage
battery pack, and the
anode output end and the
cathode output end of the storage
battery pack are connected with a
communication control module to forma loop; the positive
electrode output end of the storage
battery pack is output to the direct-current output module through the
discharge relay, the fuse and the anti-reverse
diode in sequence, and the direct-current output terminal is grounded; a cooling circuit is connected to a node A between the fuse and the anti-reverse
diode; and the
communication control module comprises a plurality of connecting ends which are respectively connected with the fuse, the
relay coil, the temperature sensor, the
discharge relay and the undervoltage protection circuit. According to the battery cabinet, thelow-
voltage direct-current stable output function is achieved through the direct-current output module, the under-
voltage automatic power-off protection function is achieved through the design of theunder-
voltage protection circuit, and the battery cabinet is compact in overall structure, reasonable in component
layout and suitable for a narrow-
space environment.