The utility model provides an integrated filtering structure used for a
motor controller, a front-stage filtering
capacitor is integrated on a PCB board card, and a rear-stage filtering
capacitor is fixedly installed on a plastic housing. The PCB card comprises a
positive power taking point and a
negative power taking point, a
control circuit of the PCB card and the pre-stage
filter capacitor form a circuit extension structure, and the
positive power taking point and the
negative power taking point are arranged at the two ends of the circuit extension structure, so that the current entering through the
positive power taking point flows through the
control circuit and the pre-stage
filter capacitor and then flows through the pre-stage
filter capacitor, and the current enters the pre-stage filter
capacitor. And the current flows out from the negative
electricity-taking point. The DC positive
electrode copper bar is electrically connected with the positive
electricity taking point, and the DC negative
electrode copper bar is electrically connected with the negative
electricity taking point; and the DC
copper bar is also electrically connected with the post-stage filter capacitor and the magnetic ring. The auxiliary electricity positive wire harness is electrically connected with the positive electricity taking point, and the auxiliary electricity negative wire harness is electrically connected with the negative electricity taking point; therefore, the
power module assembly and the auxiliary electric load are subjected to a bidirectional filtering process of power input and
power output.