Anti-sparking pre-discharge circuit of battery pack

The utility model discloses an anti-sparking pre-discharge circuit for a battery pack. The anti-sparking pre-discharge circuit comprises a main chip detection and control circuit, a main discharge control circuit, a main discharge circuit, a pre-discharge circuit, a current sampling circuit and a voltage sampling circuit, the main discharge circuit and the pre-discharge circuit are respectively connected to the current sampling circuit and the P-power supply terminal at the same time; when a load with proper power is connected, current in the circuit is sampled through the current sampling circuit; when too large or too small power is accessed, voltage in the circuit is sampled through the voltage sampling circuit; the current sampling circuit is matched with the voltage sampling circuit so as to adapt to the situation that loads with different powers are connected, and the discharging circuit is switched according to sampling data. On one hand, by arranging the pre-discharge circuit, the replacement frequenc