Power conversion apparatus and electric vehicle

Patent metadata

Field	Value
Publication number	US-9888591-B2
Application number	US-201514741855-A
Country	US
Kind code	B2
Filing date	Jun 17, 2015
Priority date	Jul 29, 2008
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

The metallic case of a power conversion apparatus includes a casing having a side wall, as well as an upper case and a lower case, a first area being formed between a cooling jacket provided at the inner periphery of the side wall and the lower case, the metal base plate dividing the first area between the cooling jacket and the upper case into a lower side second area and an upper side third area, first and second power modules being fastened to a top surface and a capacitor module being provided in the first area, driving circuits that drive inverter circuits of the power modules respectively being provided in the second area, and a control circuit that controls the driver circuits being provided in the third area.

First claim

What is claimed is:

1. A power converter apparatus comprising:
a power module having a power semiconductor element;
a metal base having an opening;
a driving circuit board fastened at one side of the metal base;
a control circuit board fastened at another side of the metal base; and
a first signal cable connecting the driving circuit board and the control circuit board through the opening.

2. The power converter apparatus according to claim 1 , further comprising:
a connector for connecting the control circuit board to an external device; and
a second signal cable connecting the control circuit board and the connector,
wherein the connector is arranged at an opposite side of the metal base from the control circuit board, and
the metal base has a guide part to guide the second signal cable toward the connector.

3. The power converter apparatus according to claim 1 , further comprising:
a connector for connecting the control circuit board to an external device; and
a second signal cable connecting the control circuit board and the connector,
wherein the first signal cable is connected to a first side of the control circuit board, and
the second signal cable is connected to an opposite side to the first side of the control circuit board.

4. The power converter apparatus according to claim 3 , further comprising:
an apparatus casing accommodating the power module; and
a DC connection terminal for connecting to a battery,
wherein the connector is provided on the outer periphery surface of one side of the apparatus casing, and
the DC connection terminal is provided on the outer peripheral surface of the other side of the apparatus casing.

5. The power converter apparatus according to claim 1 , wherein
the metal base provides a first support at the other side of the metal base, and
the driving circuit board is fastened to the first support of the metal base.

6. The power converter apparatus according to claim 1 , wherein
the metal base provides a second support at the one side of the metal base, and
the control circuit board is fastened to the second support of the metal base.

7. The power converter apparatus according to claim 1 , wherein
the peripheral edge of the driving circuit board is fastened to the metal base.

8. The power converter apparatus according to claim 1 , further comprising:
an apparatus casing accommodating the power module;
wherein the peripheral edge of the metal base is fastened to the apparatus casing.

Assignees

• Hitachi Ltd

Inventors

• Nakatsu Kinya
• Suzuki Hideyo
• Nishikimi Fusanori
• Matsuo Takeshi
• Satou Toshiya

Classifications

• H10W72/5475

  multiple bond wires connected to common bond pads at both ends of the wires · CPC title

• H10W72/5363

  the connected ends being wedge-shaped · CPC title

• H10W90/754

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H05K7/209

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20909 takes precedence) · CPC title

• H05K7/20

  Modifications to facilitate cooling, ventilating, or heating · CPC title