Portable energy storage device capable of simultaneous multi-port discharge and power allocation method

A portable energy storage device capable of simultaneous multi-port discharge, wherein:

• comprising a power configuration unit and at least two charging output ports, wherein the power configuration unit is configured to allocate power to the charging output ports connected to power-receiving devices, each charging output port being preset with a power distribution priority, a minimum output power, and a maximum output power;
• defining the maximum total output power of the energy storage device as Pmax_out, and the number of charging output ports connected to power-receiving devices as Y, defining, in order from highest to lowest priority, the ports as the first to the Y-th charging output ports, their minimum output powers as Pmin_c1 to Pmin_cY, and the smaller of their maximum output power and load request power as the first to the Y-th preset powers;
• wherein, when Y≥2 and the Y charging output ports have different priorities:
• if (Pmin_c1+ . . . +Pmin_cY)<Pmax_out<(first preset power+ . . . +Y-th preset power), the power configuration unit first satisfies the minimum output power of said ports, and then allocates the remaining power sequentially according to priority, defining the initial amount of remaining power as P0_out, and the remaining power allocation rule as follows:
• during the first round of remaining power allocation, the power configuration unit allocates to the first charging output port a total power equal to the smaller of (Pmin_c1+remaining power P0_out) and the first preset power;
• defining the remaining power obtained by the first charging output port after the first round of allocation as C1, C1=total power allocated to the first charging output port−Pmin_c1;
• defining the remaining power after the first round as P1_out, P1_out=P0_out−C1;
• if P1_out=0, power allocation ends;
• if P1_out>0, the following rule is applied to continue allocating remaining power until the remaining power Pk_out=0, thereby ending power allocation:
• during the k-th round of remaining power allocation, the power configuration unit allocates to the k-th charging output port the smaller of (Pmin_ck+remaining power Pk-1_out) and the k-th preset power as the total power obtained;
• defining the remaining power obtained by the k-th charging output port after the k-th round as Ck, Ck=total power allocated to the k-th charging output port−Pmin_ck;
• defining the remaining power after the k-th round as Pk_out, Pk_out=P0_out−C1 . . . Ck, where k is a positive integer and k≥2.