Inter-cluster equalization circuit for marine battery

The utility model relates to an inter-cluster equalization circuit for a marine battery, and the circuit comprises a plurality of equalization switch units which are electrically connected with corresponding battery clusters and a charging and discharging switch unit respectively; the charging and discharging switch unit is electrically connected to the load and is used for cutting off charging and discharging of the load during inter-cluster balancing; the processor is electrically connected to the charging and discharging switch unit and the plurality of equalization switch units and is used for controlling the on-off states of the charging and discharging switch unit and the plurality of equalization switch units so as to equalize the voltage among the plurality of battery clusters; wherein the equalization switch unit comprises at least one equalization switch and an equalization resistor, and the equalization resistor is electrically connected with one equalization switch and the charging and discharging