Flexible charging system, charging control method, device and device

The invention discloses a flexible charging system, a charging control method, a device and a device. The system comprises a first preset number of power conversion module groups and bus groups and asecond preset number of charging gun groups. Wherein a first end of each bus bar is respectively connected with an output end of a corresponding power conversion module one-to-one, the second end of each bus bar is respectively connected with an input end of a corresponding charging gun in each charging gun group through a first controllable switch, and any two bus bars in each bus bar group are connected with each other through a second controllable switch; The invention utilizes a combination of a quasi-matrix topology composed of a first controllable switch between each bus bar group and each charging gun group and a ring topology composed of a second controllable switch in each bus bar group, The advantages of high flexibility and small number of switches of the ring topology are ensured, and the complexity of