Mitsubishi Electric Corporation

Hirokazu Takabayashi

Hidetoshi Kitanaka

Yukio Nakashima

Yukihiro Yoshida

Takahiro Masuyama

Hiroyuki Ushifusa

Shigetoshi Ipposhi

Masaru Shinozaki

Tetsuo Sugahara

Ryosuke Nakagawa

Yuta Matsumoto

A voltage sensor includes a substrate on which a first electrode, a second electrode, and a measurement circuit are located. The measurement circuit measures a potential difference between the first electrode and the second electrode. The voltage sensor includes a first connecting member for electrically connecting the first electrode to the first busbar and fixing the substrate to the first busbar, and a second connecting member for electrically connecting the second electrode to the second busbar and fixing the substrate to the second busbar.

Voltage sensor and power conversion device

Controller for railway vehicle

The power conversion apparatus includes a housing attached to a roof of a vehicle, a heat-receiving block, and one or more heat pipes. The housing has an opening on the top in the vertical direction, and accommodates electronic components. The electronic components are attached to a first main surface, which is one of the main surfaces of the heat-receiving block. The heat-receiving block is attached to the housing and closes the opening. The one or more heat pipes are attached to a second main surface, which is the other of the main surfaces of the heat-receiving block, extend in a direction away from the heat-receiving block, and accommodate refrigerant therein.

Power conversion device

A support insulator includes a conductive member, an insulating member, and an attachment portion. Busbars included in a main circuit are attachable to the conductive member. The conductive member electrically connects the busbars to each other. The insulating member is attachable to a fixed frame, and is disposed over an outer surface of the conductive member to insulate the conductive member and the busbars from the fixed frame. An electronic component included in the main circuit is attachable to the attachment portion.

Support insulator and power conversion device

An electric vehicle drive system includes: a reactor; and electric vehicle control apparatuses that control electric motors for driving an electric vehicle. Each of the electric vehicle control apparatuses includes: a capacitor that defines a filter circuit together with the reactor; an inverter circuit that supplies power to the corresponding one of the electric motors; and a control unit that controls the inverter circuit. The inverter circuit is housed in a housing together with the capacitor and the control unit. The reactor is connectable to each of the housings through an electric wire having any desired length. At least one of the electric wires connecting the reactor and the housings has a length of 2 meters or more.

Electric vehicle drive system and method for protecting electric vehicle control apparatuses

A cooling device includes a heat-receiving block, a heat conductor, and first heat pipes. The heat-receiving block has a first main surface to which a heating element is fixed. The heat conductor extends along the first main surface and is fixed to the heat-receiving block. The first heat pipes are arranged in a direction in which the heat conductor extends and are fixed to the heat-receiving block at positions farther from the first main surface than the heat conductor is.

Cooling device and power conversion device

A storage battery module includes battery cells, a first member and a second member opposing the first member across a substrate. The first member closes the space between adjacent terminals, and covers an open surface of a housing in a state where the terminals of the battery cells are exposed. The first member is formed of a material having a thermal resistance greater than or equal to a first threshold. The substrate opposing the battery cells across the first member has holes through which the terminals are inserted and a conductor formed therein so as to electrically connect the terminals. The second member opposing the first member across the substrate surrounds the terminals projecting from the holes and covers the substrate with the terminals exposed from the holes. The second member is formed of a material having a thermal resistance greater than or equal to a second threshold.

Storage battery module

A vehicle power conversion device includes: a housing configured to accommodate an electronic component therein and having an opening; and a cooling device. The cooling device includes a base being a plate-shaped member and heat sinks attached to the base. The base has a groove with refrigerant enclosed. The base has a first main surface to which the electronic component is to be attached, and covers the opening by the first main surface facing an interior of the housing. The heat sinks are joined, at intervals, onto the second main surface of the base.

Vehicle power conversion device

A vehicle power conversion apparatus according to the present disclosure includes a housing attached to a vehicle, a cooler including a heat receiver that is disposed on the side near the housing and has a heated surface provided with semiconductor elements, and a heat radiator disposed on a surface of the heat receiver opposite to the heated surface, and a position adjusting member to adjust the position of the end of the heat radiator distant from the housing in the direction approaching rigging limit of the vehicle.

This storage battery module includes battery cells, a first plate-shaped member, and a second plate-shaped member opposing the first plate-shaped member across an insulating member. The first plate-shaped member has conductors formed therein. The second plate-shaped member has formed therein a heat dispersion region opposing at least a portion of the conductors of the first plate-shaped member across the insulating member. Heat generated in the conductors of the first plate-shaped member is transferred to the heat dispersion region of the opposing second plate-shaped member, and the heat is dispersed inside the heat dispersion region.

Storage battery module with a heat dissipating plate for interconnecting battery cells

An open part that has an opening surface that is perpendicular to the horizontal direction is formed in a housing of a vehicle control device. An interior of the housing is divided into a first space including the open part and a second space by a partitioning member, a main surface thereof having a hole formed therein and opposing the opening surface. The semiconductor cooling unit is housed in the first space. The semiconductor cooling unit is detachably attached in a direction in which the opening surface and the partitioning member oppose each other. An engaging member arranged on the cover of the semiconductor cooling unit engages a guide arranged on the housing, and the guide supports weight of the semiconductor cooling unit. A heat sink is provided on a base plate and forms a vertically-directed flow passage.

Vehicle control device

A housing of a power conversion device is partitioned into sealed and open parts. A first housing containing a primary-side electronic component connected to a primary winding of a transformer has a first opening through which a first connection conductor is inserted, the first opening being blocked by an aperture surface included in a third housing containing the transformer and filled with an insulating member. A shortest distance between the first connection conductor and an edge of the first opening is greater than or equal to a first threshold. A second housing containing a secondary-side electronic component connected to a secondary winding of the transformer has a second opening through which a second connection conductor is inserted, and is blocked by the aperture surface. A shortest distance between the second connection conductor and an edge of the second opening is greater than or equal to a second threshold.

A power conversion device includes a filter capacitor to accumulate therein DC power, and an element unit including a semiconductor element module to perform a switching operation for converting the DC power accumulated in the filter capacitor into AC power. The filter capacitor and the element unit are disposed in the same casing. A heat-resistant capacitor having a higher heat resistance than the filter capacitor is connected to the element portion by using a connection conductor, and is also connected to a busbar different from the connection conductor. An electrical connection between the filter capacitor and the element unit is established through the busbar, the connection conductor, and the heat-resistant capacitor.

A power conversion device that constitutes a converter-inverter unit where a converter to convert AC power to DC power and an inverter to convert DC power obtained by conversion of the converter to AC power are connected in series. A capacitor unit including a capacitor cell to accumulate therein the DC power obtained by conversion of the converter is provided between the converter and the inverter. A first conductor electrically connected to one of electrodes of the capacitor cell and a second conductor electrically connected to the other electrode of the capacitor cell are drawn out from the capacitor unit, and the first conductor is connected directly to positive-side capacitor connection terminals and of the converter and positive-side capacitor connection terminals and of the inverter, and the second conductor is connected directly to negative-side capacitor connection terminals and of the converter and negative-side capacitor connection terminals of the inverter.

A terminal connection structure for electrically connecting a conductor and at least one terminal electrode of an electronic component, wherein the terminal electrode includes a plurality of connection terminals, the terminal connection structure includes a male part that includes a hole portion into which a fastening member, which may be threaded, is inserted, and a female part into which the male part is inserted and that includes hole portions equivalent in number to the connection terminals, the conductor is secured by being sandwiched between the female part and the male part and swaging the hole portion of the male part, and the conductor is secured to the electronic component with the fastening member inserted into the hole portion of the male part and fastening mechanisms, which may be threaded, provided to the respective connection terminals.

Growing community of inventors

Tokyo, Japan

Hirokazu Takabayashi