Aisin Corporation Patente

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A vehicle drive device is disclosed that includes: a stator; a winding field rotor around which a coil is wound; a power feeding device provided between a power supply and the winding field rotor and configured to supply power to the winding field rotor in a contactless manner; and a contactless current sensor. The power feeding device includes a first board on a fixed side which has a power feeding circuit unit electrically connected to the power supply, and a second board which has a power receiving circuit unit electrically connected to the coil, is disposed so as to face the first board, and is configured to rotate integrally with the winding field rotor. The contactless current sensor is disposed on the first board.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

In a vehicle drive device (1), a case 9 has, in an internal accommodation space, a side region (E4) that is a region on an axis-orthogonal direction first side (Y1) with respect to a rotation electric machine (8) in an onboard state, that does not overlap the rotation electric machine (8) when viewed in an up-down direction (Z), and that overlaps an offset gear mechanism (3) when viewed in an axial direction. At least a part of a power supply module (7) is disposed on an upper side (Z1) with respect to the rotation electric machine (8) and at a position overlapping the rotation electric machine (8) when viewed in the up-down direction (Z), and at least a part of an inverter module (5) is disposed in the side region (E4).

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Zusammenfassung wird geladen …

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A power conversion device includes a plurality of electronic components having different amounts of heat generation and different heat-resistant temperatures, and a cooling plate through which a cooling fluid that cools a plurality of the electronic components flows. A plurality of the electronic components include a first cooling target having a relatively small amount of heat generation and a relatively low heat-resistant temperature, and a second cooling target having a relatively large amount of heat generation and a relatively high heat-resistant temperature, and in the cooling plate, a flow path is formed such that the cooling fluid flows from the first cooling target toward the second cooling target.

A power conversion device is a power conversion device provided in a vehicle drive device that transmits driving force of a traveling motor to a wheel, the power conversion device includes a plurality of conversion modules each of which is disposed in each of a plurality of layers overlapping each other in a vertical direction, a plurality of the conversion modules respectively arranged in the layers have a relatively larger weight from the layer on an upper side toward the layer on a lower side, and among a plurality of electronic components constituting the conversion module in the same layer, the electronic component having a relatively large weight is disposed in a gravity center region in the layer on the lower side.

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An object detection device includes a plurality of transmission and reception units each of which is configured to transmit a transmission wave and receive a reflected wave, a road-surface reflection intensity calculation unit configured to calculate, on a basis of the reflected wave received by each of a pair of transmission and reception units that are in a symmetrical positional relationship in a shape of a mobile object and are installed at a same height among the plurality of transmission and reception units, first road-surface reflection intensity that is intensity of a road-surface reflection wave received by one transmission and reception unit of the pair of transmission and reception units and second road-surface reflection intensity that is intensity of a road-surface reflection wave received by the other transmission and reception unit of the pair of transmission and reception units, and an abnormality detection unit configured to detect an abnormality in at least one of the pair of transmission and reception units on a basis of a difference between the first road-surface reflection intensity and the second road-surface reflection intensity.

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A vehicle drive device includes a rotating electrical machine that includes a stator having a stator core, a tube member that is made of resin and covers at least an outer circumferential surface of the stator core, and a case that houses the rotating electrical machine and the tube member, and a refrigerant flow path through which a refrigerant for cooling the stator core flows is formed between the tube member and the case.

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An object detection device detects an obstacle present around a mobile object on a basis of a time-series change in intensity of a reflected wave generated by a transmission wave transmitted from the mobile object being reflected by an object, and the object detection device includes a threshold calculation unit configured to calculate a varying threshold varying depending on movement of the mobile object on a basis of a moving average value of intensity of the reflected wave, and a determination unit configured to determine that the obstacle is present in a case where intensity of the reflected wave is larger than a predetermined fixed threshold and the varying threshold.

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Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A tire (80) of a wheel-type power reception body (10) has an annular tread section (80b) forming a tread surface (80a). A conductive band (60) is a band-shaped member having conductivity and flexibility and is continuously disposed in a circumferential direction. A plurality of conductive bodies (83) are disposed so as to extend through the tread section (80b) and are electrically connected to the conductive band (60).

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