Power system and flying device

The embodiment of the invention discloses a power system and a flying device. The system comprises M battery packs, M flying driving module groups, M busbars and a traveling driving module group; the M busbars are sequentially connected in series, and a first protection unit is arranged between every two adjacent busbars; the first protection unit is used for being in a conducting state when the connected busbars are not short-circuited, so that the M battery packs connected in parallel jointly supply power to the M flying driving module groups or the travel driving module group through the connected busbars; and the first protection unit is also used for being in a fusing state when the connected busbars are short-circuited, so that the battery packs connected with other busbars and the flying driving module groups or the traveling driving module group connected with other busbars can normally operate. By adopting the power system, the control strategy is simple, and the utilization rate of the battery packs