Drive unit of electric motor and motorized equipment using the drive unit
AssigneeDenso Corporation
InventorsNaoki MATSUDA, Masashi YAMASAKI
Life of this patent
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Abstract
A power module of a drive unit of an electric motor is formed by inserting multiple power transistors, which supply a drive current to a coil wound around a stator or a rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding. Electronic components such as aluminum electrolytic capacitors, a choke coil and a first connector are provided in a board thickness direction of the power module and are electrically connected with the wirings of the power module. Thus, a construction for electrically connecting the wirings of the power module formed by the resin molding and the electronic components can be simplified.
Claims11
A drive unit of an electric motor, which has a rotor rotatable relative to a stator, for rotating and driving the rotor relative to the stator, the drive unit comprising:
- a power module formed by inserting a plurality of power transistors, which supply a drive current to a coil wound around the stator or the rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding;
- and
- an electronic component provided in a board thickness direction of the power module and electrically connected with the wirings of the power module.
A motorized equipment comprising:
- a stator;
- a rotor provided to be rotatable relative to the stator;
- a power module formed by inserting a plurality of power transistors, which supply a drive current to a coil wound around the stator or the rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding;
- and
- an electronic component provided in a board thickness direction of the power module and electrically connected with the wirings of the power module.
Dependencies are inferred from the claim text.