Electrostatic precipitation device and electrostatic precipitation system thereof

The utility model provides an electrostatic precipitation system which comprises a plurality of first absorption plates, at least one second absorption plate, at least one electric conductor and a voltage booster, wherein the first absorption plates are arranged at intervals in parallel in a conductive mode and electrically connected with a first ground terminal; the second absorption plates are arranged between the adjacent first absorption plates in a conductive, parallel and sunken mode, and at least one of the second absorption plates is electrically connected with a second ground terminal; the electric conductors are arranged between the two ends of every two adjacent first absorption plates in a stretching mode; the voltage booster is provided with a positive electrode and a third ground terminal, the positive electrode is electrically connected with the electric conductors, and the third ground terminal is electrically connected with at least one of the second absorption plates. The utility model further provides an electrostatic precipitation device which comprises the electrostatic precipitation system and further comprises a shell and a containing space. The shell is provided with an air inlet and an air outlet, wherein the air inlet and the air outlet are communicated with the containing space. The electrostatic precipitation system is assembled in the containing space and located between the air inlet and the air outlet.