POWER CONVERSION APPARATUS

• US 20160099655A1
• Filed: 10/05/2015
• Published: 04/07/2016
• Est. Priority Date: 10/03/2014
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: INAMURA, Hiroshi, TACHIBANA, Hideaki
• Granted Patent: US 9,667,165 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Abstract

A power conversion apparatus includes a semiconductor module that includes a main body containing at least one semiconductor element, power terminals projecting from the main body to be connected to a high-voltage DC power supply and high-voltage signal terminals projecting from the main body, and is configured to convert a DC power supplied from the high-voltage DC power supply to an AC power by switching operation of the semiconductor element. The power conversion apparatus further includes a low-voltage component connected to a low-voltage DC power supply and a control circuit board on which a control circuit for controlling the switching operation of the semiconductor element is formed. The control circuit board is connected with low-voltage signal terminals extending from the low-voltage component and the high-voltage signal terminals. The low-voltage and high-voltage signal terminals are solder-connected to the control circuit board.

Claims

1. A power conversion apparatus comprising:

a semiconductor module that includes a main body containing at least one semiconductor element, power terminals projecting from the main body to be connected to a high-voltage DC power supply and high-voltage signal terminals projecting from the main body, and is configured to convert a DC power supplied from the high-voltage DC power supply to an AC power by switching operation of the semiconductor element;

a low-voltage component connected to a low-voltage DC power supply whose output voltage is lower than an output voltage of the high-voltage DC power supply; and

a control circuit board on which a control circuit for controlling the switching operation of the semiconductor element is formed, wherein

the control circuit board is connected with low-voltage signal terminals extending from the low-voltage component and the high-voltage signal terminals, and

the low-voltage signal terminals and the high-voltage signal terminals are solder-connected to the control circuit board.

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

the control circuit board is formed with through holes respectively corresponding to the high-voltage signal terminals and the low-voltage signal terminals,

the high-voltage signal terminals and the low-voltage signal terminals are put into the through holes from one side in a thickness direction of the control circuit board, and

the high-voltage signal terminals and the low-voltage signal terminals are solder-connected to the control circuit board at the other side of the thickness direction.

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

the low-voltage component is a control connector for connection between the low-voltage DC power supply and the control circuit board and connection between an external unit and the control circuit board,

the low-voltage signal terminals are connector terminals projecting from the control connector in the thickness direction, and

the control connector is disposed at a position adjacent to the control circuit board in the thickness direction.

4. The power conversion apparatus according to claim 2, further comprising output terminals to be connected to an AC load, and an output terminal block on which the output terminals are mounted,

the low-voltage component being a current sensor provided in the output terminal block to measure a current flowing through the output terminals,

the low-voltage signal terminals being sensor terminals which are connected to the current sensor, pass through the output terminal block, and project from the output terminal block in the thickness direction,

the output terminal block being disposed at a position adjacent to the control circuit board in the thickness direction.

5. The power conversion apparatus according to claim 2, further comprising input terminals to be connected to the high-voltage DC power supply, an input terminal block on which the input terminals are mounted, and an input connector for connection between the input terminals and the high-voltage DC power supply,

the low-voltage component being an interlock detection part which detects whether or not the input connector is connected to the input terminals,

the low-voltage signal terminals are interlock terminals which are connected to the interlock connection part, pass through the input terminal block, and project from the input terminal block in the thickness direction,

the input terminal block being disposed at a position adjacent to the control circuit board in the thickness direction.