Inverter-integrated electric compressor
Provided is an inverter-integrated electric compressor in which the layout of a wiring path connected to an IPM is optimized, the wiring path is simplified, and the noise interference due to disturbance is suppressed, thereby improving the controllability. In an inverter-integrated electric compressor in which an inverter box is provided on the outer periphery of a housing accommodating a compressor and a motor, the inverter box integrally accommodating an inverter device, the inverter device includes an IPM constituting an inverter circuit, and UVW output terminals arranged on one side of the IPM are disposed, in the inverter box, so as to face a glass-sealed terminal that applies power from the inverter device to the motor.
1. An inverter-integrated electric compressor in which an inverter box is provided on an outer periphery of a housing accommodating a compressor and a motor, the inverter box integrally accommodating an inverter device, wherein
the inverter device includes an intelligent power module constituting an inverter circuit
the intelligent power module is a module in which a driving circuit, a self-protection function, and a switching circuit are mounted,
UVW output terminals arranged on one side of the intelligent power module are disposed so as to face, in the inverter box, UVW terminals of a glass-sealed terminal that applies power from the inverter device to the motor, and
the UVW output terminals of the intelligent power module and the UVW terminals of the glass-sealed terminal are connected via a pattern constituting a wiring path on a control board.
2. The inverter-integrated electric compressor according to claim 1 , wherein
the glass-sealed terminal is disposed in the inverter box, at a rear end of the housing accommodating the motor, and
the intelligent power module is disposed such that the UVW output terminals thereof face a front portion of the glass-sealed terminal.
3. The inverter-integrated electric compressor according to claim 1 , wherein
the housing comprises:
a compressor housing accommodating the compressor; and
a motor housing whose one end is connected to the compressor housing, and
the glass-sealed terminal is disposed in the inverter box, at a position corresponding to the other end of the motor housing, and
the intelligent power module is disposed such that the UVW output terminals thereof face the glass-sealed terminal.
4. The inverter-integrated electric compressor according to claim 1 , wherein
the glass-sealed terminal is disposed in the inverter box, at a side of the housing accommodating the motor, and
the intelligent power module is disposed such that the UVW output terminals thereof are arranged along and inward of the glass-sealed terminal so as to face thereto.
5. The inverter-integrated electric compressor according to claim 1 , wherein
the intelligent power module includes PN input terminals that are arranged in the same row as the UVW output terminals, and
a PN terminal to which a high-voltage cable from a power source is connected is disposed at a position facing the PN input terminals.
6. The inverter-integrated electric compressor according to claim 5 , wherein a filter circuit component of the inverter device is connected to a wiring path between the PN input terminals of the intelligent power module and the PN terminal to which the high-voltage cable is connected.
7. The inverter-integrated electric compressor according to claim 5 , wherein
the UVW output terminals and the PN input terminals are arranged on one side of the intelligent power module, and
the glass-sealed terminal and the PN terminal to which the high-voltage cable is connected are disposed on the same side so as to face the UVW output terminals and the PN input terminals.
8. The inverter-integrated electric compressor according to claim 5 , wherein
the intelligent power module is disposed such that the side provided with the UVW output terminals and the PN input terminals is oriented toward a coolant intake port provided at the rear end of the housing, and
high-voltage circuit components including the intelligent power module are disposed near the coolant intake port.
9. The inverter-integrated electric compressor according to claim 1 , wherein
microcomputer connecting terminals to be connected to a microcomputer are arranged on the intelligent power module, on a side opposite to the side provided with the UVW output terminals, and
the microcomputer is mounted on a control board of the inverter device, near the microcomputer connecting terminals, so as to face thereto.
10. The inverter-integrated electric compressor according to claim 9 , wherein the control board is disposed above the intelligent power module.
11. The inverter-integrated electric compressor according to claim 6 , wherein the filter circuit component is provided in a junction box that is mounted to the rear end of the housing.
12. The inverter-integrated electric compressor according to claim 6 , wherein the filter circuit component is provided in a junction box mounted to a side surface of the housing.
13. The inverter-integrated electric compressor according to claim 6 , wherein the filter circuit component is provided in a junction box that also serves as a cover and is provided on a top surface of the inverter box.
14. The inverter-integrated electric compressor according to claim 11 , wherein a wiring path including the filter circuit component provided in the junction box is connected to the intelligent power module via a harness that has plug-in terminals.
15. The inverter-integrated electric compressor according to claim 9 , wherein the intelligent power module and the control board are mounted on a metal base plate and are secured to a wall of the housing via the base plate in the inverter box.
16. The inverter-integrated electric compressor according to claim 12 , wherein a wiring path including the filter circuit component provided in the junction box is connected to the intelligent power module via a harness that has plug-in terminals.
17. The inverter-integrated electric compressor according to claim 13 , wherein a wiring path including the filter circuit component provided in the junction box is connected to the intelligent power module via a harness that has plug-in terminals.
18. The inverter-integrated electric compressor according to claim 1 , wherein the UVW output terminals and PN input terminals are arranged in the same row as each other on one side of the intelligent power module, and microcomputer connecting terminals to be connected to a microcomputer are arranged on the opposite side of the intelligent power module, the glass-sealed terminal and a PN terminal to which a high-voltage cable from a power source is connected are disposed on the same side as each other at a position facing the UVW output terminals and the PN input terminals, a control board to which the UVW output terminals, the PN input terminals, and the microcomputer connecting terminals are connected and on which the microcomputer is mounted near a connecting position of the microcomputer connecting terminals is disposed above the intelligent power module and the UVW output terminals and the glass-sealed terminal are connected to each other via the pattern provided on the control board.
19. The inverter-integrated electric compressor according to claim 1 , wherein the UVW output terminals of the intelligent power module penetrate the control board through through-holes and are soldered to the pattern on the control board.