Rotary electric machine and method of manufacturing rotary electric machine
View Patent ↗In a rotary electric machine, wound wires are connected to a first terminal and a second terminal. Circuit terminals that are configured from a conductive metal other than aluminum, and the first terminal and the second terminal that are configured from a metal with a principal component of aluminum are joined together inside a circuit chamber that has high water resistant properties. Corrosion is accordingly suppressed at join sites of the circuit terminals with the first terminal and the second terminal. There is therefore no need to coat the join sites with for example a sealing material in order to suppress corrosion at the join sites. Good electrical continuity is accordingly enabled between the circuit terminals and the wound wires while suppressing an increase in costs, even when the wound wire is configured from a metal with a principal component of aluminum.
1. A rotary electric machine, comprising:
a cover that configures an outline of a sealed circuit chamber;
a drive circuit section that is housed inside the circuit chamber and that drives a motor section;
a circuit terminal that is provided at the drive circuit section such that the circuit terminal is housed inside the circuit chamber, and that is configured from a conductive metal other than aluminum; and
a wound wire that is wound around a tooth portion of an armature core in the motor section, that is configured from a metal whose principal component is aluminum, and that has a terminal portion
that is directly joined to the circuit terminal such that a joined portion at which the terminal portion and the circuit terminal are joined is arranged inside the circuit chamber, or
that is joined to the circuit terminal via a coupling member such that a joined portion at which the coupling member and the circuit terminal are joined is arranged inside the circuit chamber, the coupling member being configured from a metal whose principal component is aluminum.
2. The rotary electric machine of claim 1 , wherein the circuit chamber is disposed adjacent to the motor section as viewed along an axial direction of the motor section.
3. The rotary electric machine of claim 2 , wherein the terminal portion of the wound wire is joined to the circuit terminal via the coupling member.
4. The rotary electric machine of claim 1 , wherein the wound wire extends from the motor section to inside the circuit chamber, and the terminal portion of the wound wire is directly joined to the circuit terminal.
5. The rotary electric machine of claim 1 , wherein the circuit terminal is provided at a circuit board which is housed inside the circuit chamber and which configures the drive circuit section.
6. The rotary electric machine of claim 5 , wherein the terminal portion extends from the motor section to the inside of the circuit chamber.
7. The rotary electric machine of claim 6 , wherein the circuit chamber and the circuit board are disposed on an axial line of a motor shaft of the motor section.