The invention belongs to the motor field and discloses a motor bearing electric
corrosion-prevention structure and a
plastic packaging brushless
direct current motor. The motor bearing electric
corrosion-prevention structure includes a rotating shaft, a first bearing installed at one end of the rotating shaft, a first bearing supporting frame which sleeves the first bearing, an electric conduction cover which is in electric conduction connection with the first bearing supporting frame, an elastic electric conduction
assembly which is electrically connected between the electric conduction cover and the rotating shaft; the electric conduction cover sleeves the first bearing supporting frame; the rotating shaft is provided with an extension portion which extends out from the interior of the first bearing supporting frame and extends into the electric conduction cover; and the elastic electric conduction
assembly is installed in the electric conduction cover and is elastically connected between the electric conduction cover and the extension portion. According to the motor bearing electric
corrosion-prevention structure of the invention, the electric conduction cover and the elastic electric conduction
assembly are adopted, so that electric conduction connection between an inner
peripheral support and an outer
peripheral support of the first bearing can be realized, and
potential difference between the inner
peripheral support and the outer peripheral support of the first bearing can be eliminated, and electric corrosion of the first bearing can be avoided, and the first bearing can have the advantages of low manufacture cost, high
shock resistance and
high load capacity.