Direct current filtering assembly and motor controller

The utility model provides a DC filtering assembly and a motor controller, and the DC filtering assembly comprises a first DC magnetic ring which is used for sleeving a cable, and the cable comprises an anode cable and a cathode cable; the switching copper bars comprise an anode switching copper bar and a cathode switching copper bar, the anode switching copper bar is used for being connected with an anode cable, and the cathode switching copper bar is used for being connected with a cathode cable; the first EMC circuit board, the second direct-current magnetic ring and the second EMC circuit board are sequentially arranged in the extension direction of the switching copper bar, the first EMC circuit board is connected with the switching copper bar, the switching copper bar is sleeved with the second direct-current magnetic ring, and the second EMC circuit board is connected with the switching copper bar. According to the utility model, the filtering bandwidth of high-voltage direct current is increased, the