A battery cell balancing system using LC resonance, the system comprising: a drive unit including one or more battery cells which are connected in series, a resonance module which performs a resonance operation, and a switch unit which transfers charges stored in the resonance module to the one or more battery cells; and a control unit; wherein the switch unit includes: a first switch including one or more switches (SW 1, SW 3,..., SW n+1) which are connected between terminals of the one or more battery cells and a first common node; a second switch including one or more switches (SW 2, SW 4,..., SW 2n) which are connected between terminals of the one or more battery cells and a second common node; characterized in that: the control unit measures a resonance period of the resonance module in accordance with a voltage state of each of the one or more battery cells, and controls the switch unit to be turned on or off in accordance with the measured resonance period to transfer the charges charged in the resonance module to the one or more battery cells; the battery cell balancing system further comprises a change-over switch which is connected between the first and second common nodes; the one or more switches of the first switch and the one or more switches of the second switch are connected so that: each terminal of a battery cell is either connected to the first common node through one switch of the first switch or to the second common node through one switch of the second switch; and that if one terminal of a battery cells is connected to the first common node, then the other terminal of the battery cell is connected to the second common node. a drive unit including one or more battery cells which are connected in series, a resonance module which performs a resonance operation, and a switch unit which transfers charges stored in the resonance module to the one or more battery cells; and a control unit; a first switch including one or more switches (SW 1, SW 3,..., SW n+1) which are connected between terminals of the one or more battery cells and a first common node; a second switch including one or more switches (SW 2, SW 4,..., SW 2n) which are connected between terminals of the one or more battery cells and a second common node; the control unit measures a resonance period of the resonance module in accordance with a voltage state of each of the one or more battery cells, and controls the switch unit to be turned on or off in accordance with the measured resonance period to transfer the charges charged in the resonance module to the one or more battery cells; the battery cell balancing system further comprises a change-over switch which is connected between the first and second common nodes; the one or more switches of the first switch and the one or more switches of the second switch are connected so that: each terminal of a battery cell is either connected to the first common node through one switch of the first switch or to the second common node through one switch of the second switch; and that if one terminal of a battery cells is connected to the first common node, then each terminal of a battery cell is either connected to the first common node through one switch of the first switch or to the second common node through one switch of the second switch; and that if one terminal of a battery cells is connected to the first common node, then the other terminal of the battery cell is connected to the second common node.