Hitachi Automotive Systems, Ltd.

Hitachi Astemo Ltd.

Akira Ishii

Hideyuki Hara

Takuro Kanazawa

Tetsuro Tateyama

Hiroyuki Saito

Hidenori Shinohara

Keisuke Fukumasu

Kazuhiko Nakano

Morio Kuwano

Yuji Sobu

Yosei Hara

Yutaka Okubo

Yuta Numakura

Katsuhiro Higuchi

Narutoshi Yamada

Ryuji Kurihara

An electric drive device includes: an electronic control section including a first electronic control section and a second electronic control section which constitute a redundant system, the first electronic control section and the second electronic control section being provided with a first control section side connecter and a second control section side connecter which have an identical configuration, and the first non-control section side connecter being engaged with the first control section side connecter, and the second non-control section side connecter being engaged with the second control section side connecter to correspond to the lengths of the first harness and the second harness.

Electrical drive device and electrical power steering device

A connector terminal () is formed by a connector joining portion () that is joined to a mating connector terminal, a connector bonding portion (A) that is bent from the connector joining portion (C) and extends along a surface of a board () and a movement stopper portion (P-C) that engages with a movement stopper part (E) provided at the board () and stops the connector bonding portion (A) from moving on the surface of the board (). In a state in which the connector bonding portion (A) is put on solder applied to the board (), the movement stopper portion (P-C) engages with the movement stopper part (E) of the board (), and the connector terminal () is bonded and fixed to the board () with melted solder.

An element-side connection terminal () extending from a power conversion circuit unit () includes a first connection terminal portion (A) that extends in a direction intersecting a direction of extension of a counterpart-side connection terminal (); and a second connection terminal portion (B) that is bent at a point before the first connection terminal portion (A) reaches the counterpart-side connection terminal () in a direction to intersect the direction of extension of the counterpart-side connection terminal () such that the second connection terminal portion (B) is provided with elasticity and is in an elastic contact with the counterpart-side connection terminal () at an angle. A tip end side (T) of the counterpart-side connection terminal () and a tip end side (T) of the second connection terminal portion (B) are electrically joined.

Electronic control device and electric drive device

An object of the present invention is to improve the reliability of a power converter against electromagnetic noise. A power converter according to the present invention includes: a power semiconductor circuit unit; a DCDC converter circuit unit; a first drive circuit board that outputs a drive signal to the power semiconductor circuit unit; a second drive circuit board that outputs a drive signal to the DCDC converter circuit unit; and a control circuit board that outputs a first control signal for controlling the first drive circuit board and a second control signal for controlling the second drive circuit board, in which the control circuit board is arranged at a position facing the second drive circuit board with the power semiconductor circuit unit and the DCDC converter circuit unit interposed therebetween, the first drive circuit board is arranged to be substantially parallel to an array direction of the control circuit board and the second drive circuit board, and the first drive circuit board has a relay wiring that relays the second control signal output from the control circuit board to the second drive circuit board.

Power converter

An object of the present invention is to achieve reduction in height of an electric power conversion device while maintaining high performance of the electric power conversion device. An electric power conversion device according to the present invention includes: a first power semiconductor module, a second power semiconductor module, a third power semiconductor module, and an AC circuit body that transmits and detects U-phase, V-phase, and W-phase AC currents, and when a direction along an arrangement direction of the first power semiconductor module and the second power semiconductor module is defined as a first column, the third power semiconductor module and the AC circuit body are disposed along a second column being in a direction parallel to the first column, and the AC circuit body is disposed in a space that is in a direction orthogonal to the first column and faces the second power semiconductor module, and is in a direction parallel to the second column and faces the third power semiconductor module.

Electric power conversion device

To suppress reduction in resistance against vibrations, while reducing the number of components, a power conversion device including a power semiconductor module that converts a DC current into an AC current, a plate conductor that transfers the DC current or the AC current, a resin sealing material that seals the plate conductor, and an electric component that is used to control the power semiconductor module has the resin sealing material include a supporting member. The supporting member supports the electric component, and the plate conductor is buried in a portion of the resin sealing material that is disposed to face the electric component.

Power conversion device having bus bar with improved vibration resistance

A power converter includes an inverter in an inverter case, and a DC/DC converter in a converter case detachably fixed to the inverter case. The inverter includes power semiconductor modules, and the DC/DC converter includes a down-converter circuit and/or a boost converter circuit. The inverter case includes first and second path-forming members thermally contacting the converter case. In the first path-forming member, the power semiconductor module is inserted into a first coolant path. In the second path-forming member, the power semiconductor module inserted into the second coolant path, which is parallel to the first coolant path. The DC/DC converter includes an inductance device, and a switching device board on which a switching device con rolling electric current in the inductance device is mounted. The inductance and switching devices are in an area of the converter case thermally contacting first and second path forming members.

A power inverter includes a power semiconductor module that includes a power semiconductor device, a control circuit board that outputs a control signal used for controlling the power semiconductor device, a driver circuit board that outputs a driving signal used for driving the power semiconductor device, a conductive metal base plate arranged in a space between the driver circuit board and the control circuit board in which a fine and long opening portion is formed, wiring that connects the driver circuit board and the control circuit board through the opening portion and delivers the control signal to the driver circuit board, and an AC busbar that is arranged on a side opposite to the metal base plate through the driver circuit board and delivers an AC current output from the power semiconductor module to a drive motor. At least a portion of the AC busbar that faces the opening portion extends in a direction directly running in a longitudinal direction of the fine and long opening portion.

Growing community of inventors

Hitachinaka, Japan

Akira Ishii