Rotary electric machine and manufacturing method for rotary electric machine

A manufacturing method of rotary electric machine comprising:

• a motor portion with a bottomed tubular housing with one end in the axial direction closed;
• a heat-sink that closes the opening of the housing;
• a substrate whose axial direction of the motor portion is a plate thickness direction and arranged on the motor portion side with respect to the heat-sink;
• a connector assembly arranged on the side of the heat-sink opposite to the motor portion;
• and
• a connection terminal provided on one side surface of the substrate on the motor portion side and the connection terminal has a press-fitting portion that is press-fitted to a bus bar of the motor portion;
• comprising the steps of:
• fixing the substrate to the heat-sink;
• fixing the connector assembly to the heat-sink with a part of the heat-sink exposed to the outside;
• press-fitting and fixing the bus bar to the connection terminal and closing the opening of the housing with the heat-sink;
• and
• fixing the heat-sink to the housing;
• wherein the heat-sink is formed with a pair of heat-sink side positioning holes, and the substrate is formed with a pair of substrate side positioning holes;
• wherein the connection terminal is held by a holder installed on one side surface of the substrate, wherein the holder is formed with a pair of positioning pins fitted in a heat-sink side positioning hole and the substrate side positioning hole;
• and
• wherein the step of fixing the substrate to the heat sink, the pair of positioning pins of the holder, which are fitted in the pair of substrate side positioning holes in the substrate, are fitted in the pair of heat-sink side positioning holes formed in the heat-sink.

A rotary electric machine comprising:

• a motor portion with a bottomed tubular housing with one end in an axial direction closed;
• and
• a control unit assembled to an opening of the housing;
• wherein the control unit comprises:
• a heat-sink that closes the opening of the housing;
• a substrate whose axial direction of the motor portion is a plate thickness direction and arranged on the motor portion side with respect to the heat-sink, and fixed to the heat-sink;
• a connector assembly that is arranged on the side of the heat-sink opposite to the motor portion in a state where a part of the heat-sink is exposed to the outside, and fixed to the heat-sink;
• and
• a connection terminal provided on one side surface of the substrate on the motor portion side, and the connection terminal has a press-fitting portion that is press-fitted to a bus bar of the motor portion;
• wherein the substrate is divided into a first area provided with electronic components of a power supply system, and a second area provided with electronic components of a control system;
• wherein the terminal of the connector assembly is connected to the substrate in the second area;
• and
• wherein the heat-sink is formed with an insertion portion through which the terminal is inserted.