Series intelligent balanced charging system of lithium ion storage battery pack and charging method

The invention discloses a series intelligent balanced charging system of a lithium ion storage battery pack and a charging method. In the lithium ion storage battery pack, a plurality of single storage batteries are connected in series, each single storage battery is connected in series with an acquisition controller control switch, each series structure is further connected in series with another acquisition controller control switch and used for carrying out charging operation on the storage battery pack, and the status of each acquisition controller control switch is switched according to the voltages of the single storage batteries until charging is finished. During the charging process, all batteries are charged to a unified voltage platform at one time, the service lifetime of the storage batteries are not consumed extra, and no floating charging process is generated; and during the charging process, the energy already charged into the storage batteries is not consumed again, and the energy utilization