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Power module and electric transportation apparatus incorporating the same

A component and power supply technology, applied in the direction of DC motor speed/torque control, electrical components, electrical solid devices, etc., can solve the problems of low resistance and unresolved thin-film circuit patterns, to suppress failure or deterioration, reduce heat loss, the effect of improving reliability

Inactive Publication Date: 2006-02-01
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in the power semiconductor device of Patent Document 2, since only the transistors of one phase are wired by electrodes, in order to constitute a three-phase inverter, it is necessary to connect the wiring of each phase.
Moreover, although Patent Document 2 discloses such wiring by a thin film circuit pattern, it cannot be considered that the resistance of the thin film circuit pattern is lower than that of conventional wires, so the problem caused by heat generation may not be solved.

Method used

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  • Power module and electric transportation apparatus incorporating the same
  • Power module and electric transportation apparatus incorporating the same
  • Power module and electric transportation apparatus incorporating the same

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Embodiment Construction

[0059] Embodiments of the present invention will be described below with reference to the drawings. image 3 It is a circuit diagram schematically showing the drive system of the conveyor used in the power pack of the present invention. The power supply unit of the present invention can be used in various conveyors using a motor as a drive source. In this specification, the so-called power supply unit refers to a device that uses semiconductor elements to supply power to a motor while controlling a large current (10A or more).

[0060] Such as image 3 As shown, the conveyor has a power supply assembly 101 , a motor 102 , a battery 103 , a filter (smoothing) capacitor 104 and a control circuit 105 . The motor 102 is a brushless DC (direct current) motor in this embodiment. The motor 102 is rotationally driven by applying a three-phase alternating current with a phase interval of 120 degrees to three terminals of the motor 102 . A motor control unit including a 3-phase inve...

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Abstract

A power module includes a plurality of first semiconductor devices disposed so as to define a first layer in a substantially common plane, a plurality of second semiconductor devices disposed so as to define a second layer in a substantially same plane, and at least one metal plate electrically connected to at least two semiconductor devices selected from among the plurality of first and second semiconductor devices. The first layer and second layer are stacked such that the plurality of second semiconductor devices do not overlap the plurality of first semiconductor devices.

Description

technical field [0001] The present invention relates to a power supply unit and an electric conveyor using the same, and more particularly, to a power supply unit for supplying electric power to an electric motor (motor) used as a driving source of the conveyor, and an electric conveyor using the power supply unit. Background technique [0002] In recent years, from the viewpoint of environmental issues and energy issues, attention has been paid to conveyors using electric motors as their drive sources. In addition, compared with internal combustion engines, electric motors have the advantages of making less operating noise during driving, having a greater degree of freedom in designing the shape, and being able to arrange them closer to places where a driving source is required. Therefore, it is also possible to realize a new conveyor having features that are not included in conventional conveyors using an internal combustion engine. From this point of view, a conveyor usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/00H05K7/20
CPCH01L2924/0002H01L25/071H02M7/003H01L2924/00
Inventor 村井孝之森田晃司
Owner YAMAHA MOTOR CO LTD