Inverter

• US 7,019,987 B2
• Filed: 06/03/2003
• Issued: 03/28/2006
• Est. Priority Date: 06/03/2002
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Onoe, Makoto
• Primary Examiner(s): Patel, Rajnikant B.
• Application Number:
  US10/452,047
• Publication Number:
  US 20030223257A1
• Time in Patent Office: 1,029 Days
• Field of Search: 363/65, 363/71, 363/37, 363/39, 363/40, 363/41, 363/89, 363/17, 363/19
• US Class Current: 363/17
• CPC Class Codes: H02J 1/102 being switching converters H02J1/108, H02J1/12 take precedence
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: H02M 1/007 Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters

Abstract

DC/DC converters arranged side by side have first output terminals conducting to one pole of capacitors for rectification, second output terminals conducting to the other pole of the capacitors, and connection terminals disposed next to the second output terminals. The first output terminals are connected together by an I-shaped bus bar of copper or the like fastened thereto with screws. The second output terminals are connected together by one linear portion of a U-shaped bus bar fastened thereto with screws. The connection terminals are connected together by the other linear portion of the U-shaped bus bar fastened thereto with screws. In this way, the resistances of the bus bars connected to both ends of the capacitors are made substantially equal, and thereby the voltages applied to the capacitors are made equal.

Claims

1. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a plurality of DC/DC converters arranged side by side, each having a direct-current power source connected to an input side thereof,

one pole of a capacitor provided at an output end of each DC/DC converter being connected to a first common terminal in such a way that the DC/DC converters have decreasingly long connection distances in order of arrangement thereof,

another pole of the capacitor provided at the output end of each DC/DC converter being connected to a second common terminal in such a way that the DC/DC converters have increasingly long connection distances in order of arrangement thereof.

2. An inverter as claimed in claim 1,

wherein the DC/DC converters each comprise a first output terminal conducting to one pole of the capacitor, a second output terminal conducting to another pole of the capacitor, and a connection terminal disposed next to the second output terminal,

the first output terminals, second output terminals, and connection terminals of the individual DC/DC converters being arranged in different lines respectively,

the inverter further comprising a first conductor plate that ties together the first output terminals and a second conductor plate that ties together the second output terminals and that is at one end extended in U shape so as to be tied to at least one of the connection terminals.

3. An inverter as claimed in claim 2,

wherein the DC/DC converters each comprise a circuit board and a circuit portion tied to the circuit board by a fitting member,

the circuit board and the circuit portion conducting to each other by way of the fitting member.

4. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a DC/DC converter having a direct-current power source connected to an input side thereof,

the DC/DC converter comprising a circuit board and a circuit portion tied to the circuit board by a fitting member,

the circuit board and the circuit portion conducting to each other by way of the fitting member.

5. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a DC/DC converter having a direct-current power source connected to an input side thereof,

the DC/DC converter comprising a circuit board and a circuit portion tied to the circuit board by a fitting member,

the circuit board or the circuit portion being formed by insert molding.

6. An inverter as claimed in claim 5,

wherein a terminal block having an input terminal and a ground terminal or a support portion for supporting the circuit board is formed integrally with the circuit board.

7. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a plurality of DC/DC converters arranged side by side, each having a direct-current power source connected to an input side thereof

the DC/DC converters comprising ground terminals and input terminals arranged in a direction of arrangement thereof, with the ground terminals of each DC/DC converter arranged on both sides of the input terminals thereof,

one ground terminal of one DC/DC converter being tied to another ground terminal of a next DC/DC converter by a conductor plate.

8. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a plurality of DC/DC converters arranged side by side, each having a direct-current power source connected to an input side thereof,

the DC/DC converters comprising ground terminals and input terminals separated from one another by separation walls inclined with respect to a direction of arrangement thereof.

9. An inverter for converting direct-current power output from a direct-current power source into alternating-current power for output, comprising:

a plurality of DC/DC converters arranged side by side, each having a direct-current power source connected to an input side thereof,

the DC/DC converters comprising ground terminals and input terminals arranged respectively in two different lines parallel to a direction of arrangement thereof,

the ground terminals of adjacent DC/DC converters being tied together with a plate-shaped conductor plate.