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motor unit

A technology of electric motors and rotating electrical machines, applied in the direction of AC motor control, motor starting for engines, engine components, etc., which can solve the problems of reducing the cost and miniaturization of the motor device without directly stating the outline

Active Publication Date: 2020-01-07
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, in the following Patent Documents 2 to 5, realization of cost reduction and miniaturization of the motor device is not directly described, but the outline is briefly described.

Method used

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no. 1 Embodiment

[0041] use figure 1 The structure of the motor device 1 of the first embodiment will be described.

[0042] An electric motor device (hereinafter, referred to as a system) 1 is provided in a vehicle, and uses power supplied from an on-vehicle battery (hereinafter, simply referred to as battery 2 ) to generate output to start the internal combustion engine 3 , or assist the output of the internal combustion engine 3 , or utilize the output of the internal combustion engine 3 . The voltage induced by the driving force charges the battery 2 , and the motor device 1 functions as both a motor and a generator.

[0043] Furthermore, the system 1 includes the following rotary electric machine 4 , inverter 5 , and control unit (functioning as a control means) 6 .

[0044] First, the rotary electric machine 4 operates as an electric motor that starts the internal combustion engine 3 or assists the output of the internal combustion engine 3 , or operates as a generator that charges the ...

no. 2 Embodiment

[0080] The system 1 of the second embodiment will be described. In this second embodiment, the description will focus on the configurations different from the system 1 of the first embodiment, and the same reference numerals will be used for the same configurations as those described in the first embodiment, and the description will be omitted or simplified. .

[0081] Adopt the system 1 of the 2nd embodiment, as Figure 5 As shown, by providing center taps 8U, 8V, and 8W in windings 7U to 7W, the actual number of turns for each phase can be varied.

[0082] In addition, the actual number of turns is the number of turns of the part of each of the windings 7U to 7W that is energized by the power supply from the battery 2 during the operation as a motor, or the number of turns that transmits the induced voltage to the battery 2 during the operation as a generator. number of turns supplied by the part.

[0083]Therefore, in the windings 7U to 7W of the rotating electrical mach...

no. 3 Embodiment

[0133] The system 1 of the third embodiment will be described. In this third embodiment, the description will focus on the configurations different from the system 1 of the second embodiment, and the same symbols will be used for the configurations that are the same as those described in the second embodiment, and the description will be omitted or simplified.

[0134] In the control unit 6 of the system 1 of the third embodiment, as Figure 12 As shown, the functions of the control unit 6 are provided by the CPU 6B reading the control program of the third embodiment in the memory 6C and executing the program. This function also includes a stroke determination unit 17 ( Figure 12 : Functions as a process judgment part). The stroke determination unit 17 , that is, the control unit 6 determines the stroke of the internal combustion engine 3 using, for example, a signal output from the rotational speed detector 12 (signal indicating the crank angle) and a signal indicating the...

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Abstract

An electrical motor device (1) that is provided with: a rotating electrical machine (4) that has three-phase windings (7U-7W); a switch (S) that turns application of voltage to the windings (7U-7W) on and off; a control means (6) that gives instructions to the switch (S) and controls the action of the rotating electrical machine (4); and a rotational speed detection means (12) that detects the rotational speed of an internal combustion engine (3). The control means (6) has a three-phase mode that applies voltage to the three-phase windings (7U-7W) in three states sequentially and a two-phase mode that alternates between two states selected from among the three states. The control means (6) has a first threshold value (C0) for the rotational speed of the internal combustion engine (3) and uses the two-phase mode when the value detected by the rotational speed detection means (12) is greater than the first threshold value (C0).

Description

technical field [0001] The present disclosure relates to a motor device for a vehicle that assists the output of an internal combustion engine such as a vehicle engine. Background technique [0002] Conventionally, various configurations have been made in order to promote cost reduction and miniaturization in electric motor devices that operate rotating electric machines as electric motors. [0003] For example, Patent Document 1 discloses a motor device having a plurality of three-phase bridge circuits as switching means for turning on and off the windings of the respective phases of a rotating electric machine. [0004] In addition, in the motor device disclosed in Patent Document 1, the semiconductor switches included in a plurality of three-phase bridge circuits are configured with MOSFETs of one chip, and the respective three-phase bridge circuits are controlled so that switching times are shifted from each other. [0005] Thus, in Patent Document 1, since a transient ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/08B60W20/10F02N11/04F02N11/08H02P27/06
CPCB60W10/08B60W20/00F02N11/04F02N11/08H02P27/06Y02T10/40
Inventor 寺田金千代
Owner DENSO CORP
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