Lithium battery charging management system and method thereof

The invention provides a lithium battery charging management system and method. The lithium battery charging management system comprises a battery charger, an upper computer, a battery main control module and at least one battery pack module, the battery main control module comprises a control unit, a current detector and a relay, the battery pack module comprises a signal acquisition unit and at least one battery cell, and the signal acquisition unit comprises a detection circuit and a balance circuit. According to the invention, the detection circuit and the balancing circuit in the signal acquisition unit are respectively connected with the battery core by using single wires, so that the condition of voltage acquisition distortion of the battery core caused by increasing the power of the balancing circuit can be avoided, and the system is suitable for the battery core with relatively large capacity; and the control unit is in signal connection with the battery charger, the control unit can communicate with