Integrated-inverter electric compressor

• US 8,162,627 B2
• Filed: 09/05/2008
• Issued: 04/24/2012
• Est. Priority Date: 09/06/2007
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Hattori, Makoto, Takashige, Takayuki, Niwa, Kazuki, Nakagami, Takashi, Nakano, Koji
• Primary Examiner(s): Won, Bumsuk
• Application Number:
  US12/443,285
• Publication Number:
  US 20100074770A1
• Time in Patent Office: 1,327 Days
• Field of Search: 417/44.1, 417/237, 417352-354, 417/410.1, 310/71
• US Class Current: 417/410.1
• CPC Class Codes: F04B 2203/0204 Frequency of the electric current
• CPC Class Codes: F04B 27/0895 driving means
• CPC Class Codes: F04B 39/121 Casings
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 5/225 Terminal boxes or connection arrangements specially adapted for submersible motors H02K5/132
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06

Abstract

An integrated-inverter electric compressor is provided, in which a change of the combination of weld plating layers provided on weld surfaces of an electrical connection terminal of an inverter can be allowed for easily. In an integrated-inverter electric compressor in which an inverter is integrally fitted to a compressor housing and an electrical connection terminal that electrically connects the inverter to an electric motor and/or an external power source is provided, one end of the electrical connection terminal has a wire-bonding weld surface for the inverter, the wire-bonding weld surface being provided with a weld plating layer for welding a bonding wire thereto, whereas the other end of the electrical connection terminal has weld surfaces for the electric motor and/or the external power source, the weld surfaces of two sides being respectively provided with different weld plating layers for connecting lead wires, bus bars, or terminals thereto.

Claims

1. An integrated-inverter electric compressor in which an inverter is integrally fitted to a compressor housing containing a compression mechanism and an electric motor, and the inverter is provided with an electrical connection terminal that electrically connects the inverter to the electric motor or an external power source,

wherein one end of the electrical connection terminal has a wire-bonding weld surface for the inverter, the wire-bonding weld surface being provided with a weld plating layer for welding a bonding wire thereto, whereas the other end of the electrical connection terminal has two sides, each of the two sides being provided with a respective weld surface for the electric motor or the external power source, the respective weld surfaces of the two sides being provided with different weld plating layers for connecting lead wires, bus bars, or terminals thereto.

2. The integrated-inverter electric compressor according to claim 1, wherein the weld plating layer provided on the wire-bonding weld surface and the weld plating layer provided on one of the two respective weld surfaces are the same weld plating layer, the weld plating layer being provided over substantially the entire electrical connection terminal.

3. The integrated-inverter electric compressor according to claim 1, wherein, in the electrical connection terminal, a terminal body is composed of brass, the weld plating layer provided on the wire-bonding weld surface is a tin plating layer, the weld plating layer provided on one of the two respective weld surfaces is a tin plating layer, and the weld plating layer provided on the other one of the two weld surfaces is a nickel plating layer.

4. The integrated-inverter electric compressor according to claim 1, wherein the electrical connection terminal is integrated, by plastic insert molding, in a plastic casing, which is modularized, of the inverter.

5. An integrated-inverter electric compressor in which an inverter is integrally fitted to a compressor housing containing a compression mechanism and an electric motor, and the inverter is provided with an electrical connection terminal that electrically connects the inverter to the electric motor and an external power source,

wherein one end of the electrical connection terminal has a wire-bonding weld surface for the inverter, the wire-bonding weld surface being provided with a weld plating layer for welding a bonding wire thereto, whereas the other end of the electrical connection terminal has two sides, each of the two sides being provided with a respective weld surface for the electric motor and the external power source, the respective weld surfaces of the two sides being provided with different weld plating layers for connecting lead wires, bus bars, or terminals thereto.