Drive device control unit

• US 8,154,160 B2
• Filed: 01/23/2009
• Issued: 04/10/2012
• Est. Priority Date: 02/21/2008
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Kakuda, Kentaro, Kubo, Ryohei
• Primary Examiner(s): Hanh, Nguyen N
• Application Number:
  US12/320,338
• Publication Number:
  US 20090213564A1
• Time in Patent Office: 1,173 Days
• Field of Search: 310/66, 310/67.R, 310/68.R, 310/68.D
• US Class Current: 310/66
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/365 with the gears having orbital motion
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60K 6/547 the transmission being a stepped gearing
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 3/0092 with use of redundant elements for safety purposes
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 2510/081 Speed
• CPC Class Codes: B60W 2710/081 Speed
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: H02P 27/08 with pulse width modulation
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A drive device control unit that controls a drive device including a rotating electrical machine, the drive device control unit includes a control substrate that controls the drive device; a switching element module that forms an inverter that drives the rotating electrical machine; a smoothing capacitor that smoothes an input power supply of the inverter; a first base having the switching element module fixed thereto; and a second base supported by the first base and having the smoothing capacitor fixed to a first surface of the second base, wherein the control substrate is fixed to a second surface of the second base opposite to the first surface having the smoothing capacitor fixed thereto.

Claims

1. A drive device control unit that controls a drive device including a rotating electrical machine, the drive device control unit comprising:

a control substrate that controls the drive device;

a switching element module that forms an inverter that drives the rotating electrical machine;

a smoothing capacitor that smoothes an input power supply of the inverter;

a first base having the switching element module fixed thereto; and

a second base supported by the first base and having the smoothing capacitor fixed to a first surface of the second base,

wherein the control substrate is fixed to a second surface of the second base opposite to the first surface having the smoothing capacitor fixed thereto.

2. The drive device control unit according to claim 1, wherein:

the second base has a first box-shaped portion having an opening that is open toward the first base and a bottom portion having an approximately flat plate shape, and

the smoothing capacitor is fixedly accommodated in the first box-shaped portion, and the control substrate is fixed to an outer surface of the bottom portion.

3. The drive device control unit according to claim 2, wherein the control substrate is fixedly fastened to the bottom portion at a plurality of positions on a peripheral edge of the control substrate and at least one position closer to a middle of the control substrate than the plurality of positions.

4. The drive device control unit according to claim 2, wherein the smoothing capacitor has an approximately rectangular parallelepiped shape and the first box-shaped portion has an inner space of an approximately rectangular parallelepiped shape corresponding to the shape of the smoothing capacitor.

5. The drive device control unit according to claim 2, wherein the smoothing capacitor includes a connection terminal that protrudes from the opening of the first box-shaped portion to a position outside of the first box-shaped portion when the smoothing capacitor is accommodated in the first box-shaped portion.

6. The drive device control unit according to claim 1, further comprising:

a step-up device that steps up a power supply voltage, wherein;

the step-up device has a step-up switching element, a step-up capacitor, and a reactor;

the step-up switching element is fixed to a same surface of the first base as that of the switching element module;

the reactor is fixed to the first base; and

the step-up capacitor is fixed to the second base.

7. The drive device control unit according to claim 6, wherein:

the second base has a first box-shaped portion having an opening that is open toward the first base and a bottom portion having an approximately flat plate shape;

the smoothing capacitor is fixedly accommodated in the first box-shaped portion, and the control substrate is fixed to an outer surface of the bottom portion;

the second base has a second box-shaped portion that is provided adjacent to the first box-shaped portion, and which is open in an opposite direction to an opening direction of the first box-shaped portion, and

the step-up capacitor is fixedly accommodated in the second box-shaped portion.

8. The drive device control unit according to claim 7, further comprising:

a noise filter that removes supply noise, wherein the noise filter is fixed to a side of the step-up capacitor opposite to the first box-shaped portion.

9. The drive device control unit according to claim 7, further comprising

a cover member fixed to the second base so as to cover the opening of the second box-shaped portion, wherein a cable connected to the control substrate is fixed to the cover member.

10. The drive device control unit according to claim 9, wherein the cable connects the control substrate to the switching element module, a sensor that detects an operating state of the rotating electrical machine, or electrically connects each part of the drive device control unit.

11. A drive device control unit that controls a drive device including a rotating electrical machine, the drive device control unit comprising:

a control substrate that controls the drive device;

a switching element module that forms an inverter that drives the rotating electrical machine;

a smoothing capacitor that smoothes an input power supply of the inverter;

a first base having the switching element module fixed thereto;

a second base supported by the first base and having the control substrate and the smoothing capacitor fixed to the second base; and

a step-up device that steps up a power supply voltage, wherein;

the step-up device has a step-up switching element, a step-up capacitor, and a reactor;

the step-up switching element is fixed to a same surface of the first base as that of the switching element module;

the reactor is fixed to the first base, and

the step-up capacitor is fixed to the second base.

12. The drive device control unit according to claim 11, wherein:

the second base has a first box-shaped portion having an opening that is open toward the first base and a bottom portion having an approximately flat plate shape, and

the smoothing capacitor is fixedly accommodated in the first box-shaped portion, and the control substrate is fixed to an outer surface of the bottom portion.

13. The drive device control unit according to claim 12, wherein the control substrate is fixedly fastened to the bottom portion at a plurality of positions on a peripheral edge of the control substrate and at least one position closer to a middle of the control substrate than the plurality of positions.

14. The drive device control unit according to claim 12, wherein the smoothing capacitor has an approximately rectangular parallelepiped shape and the first box-shaped portion has an inner space of an approximately rectangular parallelepiped shape corresponding to the shape of the smoothing capacitor.

15. The drive device control unit according to claim 12, wherein the smoothing capacitor includes a connection terminal that protrudes from the opening of the first box-shaped portion to a position outside of the first box-shaped portion when the smoothing capacitor is accommodated in the first box-shaped portion.

16. The drive device control unit according to claim 11, wherein:

the second base has a first box-shaped portion having an opening that is open toward the first base and a bottom portion having an approximately flat plate shape;

the smoothing capacitor is fixedly accommodated in the first box-shaped portion, and the control substrate is fixed to an outer surface of the bottom portion;

the second base has a second box-shaped portion that is provided adjacent to the first box-shaped portion, and which is open in an opposite direction to an opening direction of the first box-shaped portion, and

the step-up capacitor is fixedly accommodated in the second box-shaped portion.

17. The drive device control unit according to claim 16, further comprising:

a noise filter that removes supply noise, wherein the noise filter is fixed to a side of the step-up capacitor opposite to the first box-shaped portion.

18. The drive device control unit according to claim 16, further comprising

a cover member fixed to the second base so as to cover the opening of the second box-shaped portion, wherein a cable connected to the control substrate is fixed to the cover member.

19. The drive device control unit according to claim 18, wherein the cable connects the control substrate to the switching element module, a sensor that detects an operating state of the rotating electrical machine, or electrically connects each part of the drive device control unit.