Denso Corporation

Nec Tokin Corporation

Akira Nakasaka

Kenichi Oohama

Naohisa Harada

Hiroshi Inamura

Kazuhiro Kosaka

Masaru Miyazaki

Yuuya Kiuchi

Keisuke Mizushiri

Kenji Saka

Mitsuharu Matsuno

Satoshi Noda

Tsuyoshi Kurauchi

Masao Murakami

Kazurou Matsumoto

An electric power conversion device has semiconductor modules, a main P bus bar, a main N bus bar, a capacitor module, an input P bus bar and an input N bus bar. The input N bus bar is connected to the DC power source. The main N bus bar is connected to a negative electrode terminal of the semiconductor module to supply the DC power. A capacitor N bus bar, a filter capacitor and a smoothing capacitor in the capacitor module are molded by capacitor molded resin. The capacitor N bus bar is connected to a negative electrode terminal of the filter capacitor. The input N bus bar has a first N connection section connected to the capacitor N bus bar and a second N connection section connected to the main N bus bar. The main N bus bar is arranged outside of the capacitor mold resin.

Electrical power conversion device

An electric power converter includes a semiconductor module and a DC bus bar. The semiconductor module includes a main body portion having a built-in semiconductor element therein and a DC terminal to which a DC voltage is applied projecting from the main body portion. A DC bus bar is connected to the DC terminal. The DC bus bar is disposed such that a thickness direction of the DC bus bar matches a projecting direction of the DC terminal. The penetrating portion penetrating the projecting direction is formed in the DC bus bar. The DC terminal is connected to the DC bus bar in a state where at least a part of the DC terminal is disposed in a position that can be seen from the penetrating portion when viewed from the projection direction. The penetrating portion is formed in a hole shape.

Electric power converter

An electric power converterincludes a flow passage FPformed so that cooling water can pass through while exchanging heat with semiconductor modules, another flow passage FPformed so that the cooling water can pass through while exchanging heat with a capacitorand a reactor, and a plate-like connecting plateattached in a state where a major surface thereof is disposed along a side wallof a case. A grooveand a groovethat communicate between the flow passage FPand the flow passage FPare formed in the connecting plate

Electric power convertor

An electric power converter includes a semiconductor module, a capacitor, and a DC bus bar that electrically connects them. The capacitor has a capacitor element and a capacitor terminal connected to the capacitor element. The capacitor terminals and the DC bus bar are connected to each other at least at two connecting portions. The DC bus bar has a bus bar main body portion that is connected to the semiconductor module. The two connecting portions are connected by at least a portion of the bus bar main body portion. The capacitor terminal has a terminal main body portion that is connected to the capacitor element. The two connecting portions are connected by at least a portion of the terminal main body portion.

A power conversion device comprises a main circuit section that has a semiconductor module with a switching element therein and including a main electrode terminal, a capacitor with a capacitor element therein and that includes a capacitor terminal, and a bus bar that connects the main electrode terminal and the capacitor terminal. The capacitor terminal extends from a capacitor main body including the capacitor element therein towards the main circuit section. The bus bar provides a bending section on a base end side of a connecting section between the bus bar and the capacitor terminal. The bus bar and the capacitor terminal are connected such as to overlap in a state in which respective tip directions match.

Power conversion device

An electric power conversion apparatus includes a stacked body, a capacitor, a metal frame and a case. The stacked body is formed by stacking semiconductor modules with coolant passages formed therebetween. The frame has both the stacked body and the capacitor fixed therein. The case has all of the stacked body, the capacitor and the frame received therein. Further, the frame has a separation wall that separates the stacked body and the capacitor from each other, a stacked body-surrounding wall that surrounds the stacked body with the help of the separation wall, and a capacitor-surrounding that surrounds the capacitor with the help of the separation wall. The capacitor has a pair of end portions that are opposite to each other in a predetermined direction, in which control terminals of the semiconductor modules of the stacked body protrude, and each at least partially exposed from the capacitor-surrounding wall of the frame.

Electric power conversion apparatus

A power conversion apparatus includes electronic components configuring a power conversion circuit, a cooler for cooling at least part of the electronic components, and a case housing the electronic components and the cooler. The at least part of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit. The internal unit is fixed within the case through the frame. The frame has such a shape that the at least part of the electronic components is surrounded by the frame from four sides.

Power conversion apparatus

A reactor is provided with a coil, a core, and a case. The coil generates magnetic flux in response to supply of current thereto. The core is made of magnetic powder-containing resin filled in spaces inside and outside of the core. The case accommodates therein the coil and the core. The reactor is also provided with a cooling pipe (cooling member), which is arranged to be in contact with the core. A power converter is provided with semiconductor modules, a cooler, and the reactor. In the power converter, the cooler is arranged partially being in contact with the core of the reactor.

Reactor and power converter incorporating the reactor

An electric power conversion apparatus is provided which includes electronic components, a cooler, an internal unit, a capacitor, and a case. The internal unit has a frame to which at least one of the electronic components and the cooler are secured and which surrounds all around the one of the electronic components. The frame includes unit fixing sections through which the internal unit is fixed to the case and capacitor fixing sections through which the capacitor is fixed to the internal unit. The capacitor fixing sections are located inward of the frame more than the unit fixing sections. The internal unit is fixed to the case and thus works as a beam to increase the mechanical rigidity of the case. The fixing of the internal unit to the case minimizes external force to be exerted through the case on the electronic component and the cooler.

The power conversion apparatus includes electronic components constituting a power conversion circuit, a cooler for cooling at least some of the electronic components, and a case housing the at least some of the electronic components and the cooler. The at least some of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit. The frame has such a shape that at least some of the electronic components constituting the internal unit are disposed inside the frame. The frame includes a terminal block on which input/output terminals for inputting and outputting controlled power are mounted for providing connection between the input/output terminals and external devices.

In a power conversion apparatus, electronic components and a cooler are integrated in a frame as an internal unit. The internal unit is fixed within a case through the frame. The frame has such a shape that the electronic components are surrounded by the frame, and includes a first wall section, and second and third wall sections extending from both sides of the first wall section. The cooler includes a coolant introduction tube and a coolant discharge tube. The coolant introduction tube and the coolant discharge tube project outward from to the frame. The first to third wall sections include a support wall section supporting at least one of the coolant introduction tube and the coolant discharge tube, and a frame wall section not supporting the coolant introduction tube and the coolant discharge tube. The thickness of the support wall section is larger than the thickness of the frame wall section.

The power conversion apparatus includes electronic components constituting a power conversion circuit, a cooler for cooling at least some of the electronic components, and a case housing the electronic components and the cooler. The at least some of the electronic components and the cooler are fixed to and integrated in a frame as an internal unit . The internal unit including therein the semiconductor modules also includes a control circuit board fitted to board fixing sections formed in the frame so as to project from the frame in the height direction perpendicular to the plane of the frame. Each of the board fixing sections has a board abutment surface at a position closer to the frame than the tips of control terminals of the semiconductor modules formed so as to project in the height direction.

An assembly includes at least one electronic component, a bus bar electrically connected to the electronic component and having a connection portion, a case receiving both the electronic component and the bus bar and having first and second openings, and a drop prevention member having a drop prevention wall. The connection portion of the bus bar is to be connected with a terminal of an external connector by engaging a first engaging member to be placed inside the case through the first opening and a second engaging member provided in the external connector. In the assembly, there is defined, by the drop prevention wall, the connection portion of the bus bar, and part of the external connector, a confinement space for confining the first engaging member and thereby preventing it from dropping outside the confinement space during establishment of the engagement between the first and second engaging members.

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Anjo, Japan

Akira Nakasaka