The invention discloses a 
discharge control strategy, device and apparatus of a 
battery system, and the control strategy comprises the steps of obtaining the characterization parameters which represent the 
branch usage rate of the 
battery system, wherein the characterization parameters at least comprise the 
branch current value of the 
battery system and the battery temperature; based on the characterization parameters, determining a 
discharge branch of a 
load capacity specification required by the 
discharge of the battery 
system; and controlling the determined discharge branch with the corresponding 
load capacity specification to be conducted. According to the invention, the load specification required by the discharge of the battery 
system is determined by using the obtained characterization parameters, and then the discharge branch of the corresponding load is conducted, so that the technical problem of low 
utilization rate of the discharge branch caused by the fact that a plurality of discharge loops of the battery 
system adopt the same load specification in the prior art is solved; and the technical effects that the discharge branches with different 
load capacity specifications can be selected according to the discharge capacity, and the 
utilization rate of the discharge branches is improved are achieved.