POWER CONVERSION APPARATUS

• US 20110280056A1
• Filed: 01/13/2011
• Published: 11/17/2011
• Est. Priority Date: 01/14/2010
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: NODA, Satoshi
• Granted Patent: US 8,422,222 B2
• Time in Patent Office: Days
• US Class Current: 363/146
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14329 specially adapted for the configuration of power bus bars

Abstract

A power conversion apparatus is provided, which accommodates electronic components configuring at least part of a power conversion circuit, and a terminal block collecting wires running from the electronic components, in a case. The terminal block includes a plurality of terminal connecting parts at which a plurality of high-voltage cables, through which electric power is received from and provided to the outside of the case, and the wires are connected to each other, and insulating parts provided between the terminal connecting parts and ensuring insulation between the high-voltage cables and between the wires. A plurality of insertion holes, into which the high-voltage cables are inserted, are formed in one side wall of the case. An opening part for performing an operation for fixing the high-voltage cables to the terminal connecting parts is formed in a wall of the case opposed to the terminal connecting parts and the insulating parts. An extending part is formed around the opening part so as to extend from a circumference of the opening part toward the terminal block side.

Claims

1. A power conversion apparatus, which accommodates electronic components configuring at least part of a power conversion circuit, and a terminal block collecting wires running from the electronic components, in a case, wherein

the terminal block includes a plurality of terminal connecting parts at which a plurality of high-voltage cables, through which electric power is received from and provided to the outside of the case, and the wires are connected to each other, and insulating parts provided between the terminal connecting parts and ensuring insulation between the high-voltage cables and between the wires,

a plurality of insertion holes, into which the high-voltage cables are inserted, are formed in one side wall of the case,

an opening part for performing an operation for fixing the high-voltage cables to the terminal connecting parts is formed in a wall of the case opposed to the terminal connecting parts and the insulating parts, and

an extending part is formed around the opening part so as to extend from a circumference of the opening part toward the terminal block side.

2. The power conversion apparatus according to claim 1, wherein

the extending part includes a hole-side extending part on the insertion hole side and a counter-hole-side extending part on the side opposed to the insertion hole.

3. The power conversion apparatus according to claim 2, wherein

the hole-side extending part includes a first extending part opposed to the terminal connecting part and a second extending part opposed to the insulating part, and the second extending part is formed so as to extend further toward the terminal block side than the first extending part extends toward the terminal block side.

4. The power conversion apparatus according to claim 1, wherein

the terminal block is formed with a projection part projecting from an end portion of the terminal block toward the extending part.

5. The power conversion apparatus according to claim 4, wherein

the projection part is formed so as to project from an end in the direction, in which the wire and the high-voltage cable extend, of the insulating part toward the extending part.

6. The power conversion apparatus according to claim 4, wherein

the projection part and the extending part are formed so that surfaces on the side thereof opposed to the insertion hole are flush with each other.

7. The power conversion apparatus according to claim 1, wherein

the insulating part is formed with a convex guide in the direction in which the high-voltage cable is inserted.

8. The power conversion apparatus according to claim 1, wherein

the extending part is formed so as to extend from the whole circumference of the opening part.

9. The power conversion apparatus according to claim 1, wherein

the length of the extending part projecting toward the terminal block side follows the opposed terminal block.

10. The power conversion apparatus according to claim 1, wherein

the insertion holes are asymmetrically formed in the one side wall of the case, and the terminal connecting parts of the terminal block, on which the high-voltage cables inserted into the insertion holes are arranged, are asymmetrically formed so as to correspond to the insertion holes.

11. The power conversion apparatus according to claim 1, wherein

a projection part is formed so as to project from the side opposed to the terminal block of the extending part toward the inside of the opening part.