Spatial lithium-ion battery pack equalizing device

The invention relates to a spatial lithium-ion battery pack equalizing device. The equalizing device comprises threshold comparison circuit, a current feedback circuit, a voltage-controlled current source circuit, a current limit circuit and a main power circuit. The voltage of a single battery is limited between two thresholds. According to the invention, the circuit is easy to implement without a control chip, and can be used for a satellite lithium-ion battery pack, the equalizing device achieves automatic equalizing control of a lithium-on battery pack and achieve independent control of a single battery by means of the single battery voltage.