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Motor drive device

A driving device and motor technology, applied in electromechanical devices, control electromechanical transmission devices, motors, etc., can solve the problems of increased structural size, increased cost, difficulty in miniaturization and light weight

Inactive Publication Date: 2010-01-20
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the overall structural size of the motor increases in the axial direction relative to the motor body, making it difficult to reduce the size and weight of the motor.
[0012] In addition, the motor control device for a vehicle described in Japanese Patent Application Laid-Open No. 2005-143157 requires an excitation control circuit for controlling the power supply to the field winding, which causes problems in that the structural size of the device increases and the cost increases.
From the point of view of ensuring the interior space of the vehicle compartment, the above-mentioned problems are contrary to the requirement of miniaturizing the structural size of the gradually increasing device.

Method used

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Examples

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Deformed example 1

[0201] Figure 14 It is a side sectional view of the motor 11 of Modification 1 of the embodiment of the present invention, Figure 15 yes Figure 14 Sectional drawing of line XV-XV.

[0202] Such as Figure 15 As shown, the magnet 44 includes: a magnet (first magnet) 44a; and magnets (second magnets) 44b and 44c provided adjacent to the magnet 44a. The magnets 44b, 44c are provided at both ends of the magnet 44a.

[0203] The magnetic poles of the magnet 44 a positioned on the outer surface side of the rotor core 43 are arranged differently from the magnetic poles of the magnets 44 b and 44 c positioned on the outer surface side of the rotor core 43 . In this way, since the magnets 44b and 44c are provided, the magnetic flux of the magnets 44b and 44c is added to the magnetic flux of the magnet 44a, so that the total magnetic flux of the magnet 44 is larger than that of the magnet 44a alone. Furthermore, the magnets 44 a , 44 b , and 44 c extend between both end portions...

Deformed example 2

[0206] Figure 16 It is a perspective view of a rotor 40 of a motor according to Modification 2 of the embodiment of the present invention.

[0207] refer to Figure 16 , On the outer surface of the rotor 40, a magnet 44d and a magnet 44e are provided.

[0208] The surface of the magnet 44d facing outward is an N pole. And, the surface opposite to this surface is the S pole. That is, the N pole and the S pole of the magnet 44d are aligned in the radial direction, and the magnet 44d extends from one end portion of the rotor 40 to the other end portion.

[0209] The length of the magnet 44e in the axial direction is shorter than that of the magnet 44d, and extends from one end of the rotor 40 to the center of the rotor 40 in the axial direction. And, the magnet 44e is provided so that the outer surface of the rotor 40 may cover the part located between the magnets 44d.

[0210] The surface of the magnet 44e facing outward is an S pole, and the magnetic pole of a polarity di...

Deformed example 3

[0216] Figure 18 It is a side sectional view of the motor 14 of Modification 3 of the embodiment of the present invention, Figure 19 yes Figure 18 Sectional view of line XIX-XIX shown.

[0217] refer to Figure 18 , The motor 14 includes: a rotating shaft 41 ; a rotor 40 fixedly provided on the rotating shaft 41 ; a field yoke 21 provided on the outer periphery of the stator 30 ; and a field winding 50 .

[0218] Such as Figure 19 As shown, the rotor 40 includes two rotor teeth 45 arranged opposite each other.

[0219] Preferably, the radial thickness t1 of the dust rotor core 43 b at the portion where the rotor teeth 45 are located is at least twice the radial thickness t2 of the dust rotor teeth 43 b at the portion located between the rotor teeth 45 .

[0220] In this way, by protruding the rotor teeth 45 in the radial direction, it is possible to suppress leakage of magnetic flux from the stator core 22 to the surface of the rotor core 43 located between the rotor ...

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PUM

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Abstract

A motor (10) includes a field pole formed by applying a field current to a field winding (50). A boost converter (120) voltage-converts the output voltage of a battery (B) and outputs it to a section between a power supply line (107) and a grounding line (105). The field winding (50) is electrically connected to a current path between the battery (B) and the power supply line (107) and configured so that a voltage switched by a switching element (Q1) is applied to both ends of it. A control device (100) switches / controls the switching element (Q1) and a switching element (Q3) which is connected in parallel to the field winding (50), so as to control the field current to adjust a magnetic flux density between a rotor and a stator and convert the output voltage of the battery (B) into a voltage based on the voltage instruction value.

Description

technical field [0001] The invention relates to a motor driving device, in particular to a motor driving device for driving an adjustable armature winding interlinkage magnetic flux. Background technique [0002] Recently, hybrid vehicles (Hybrid Vehicles) and electric vehicles (Electric Vehicles) are attracting attention as environmentally friendly vehicles. The hybrid vehicle is a vehicle that uses, as a power source, a motor driven by a DC power supply via an inverter, in addition to a conventional engine. That is, the power source is obtained by driving a motor, and the power source is obtained by converting a DC voltage from a DC power supply into an AC voltage by an inverter and rotating a motor by the converted AC voltage. [0003] In addition, an electric vehicle is a vehicle that uses a DC power supply, an inverter, and a motor driven by the inverter as power sources. [0004] As a drive motor for a hybrid vehicle or an electric vehicle as described above, it has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06B60L9/18H02K21/14H02P21/22H02P27/08
CPCB60L11/1803Y02T10/70H02K21/16H02P2201/09Y02T10/641H02K21/046Y02T10/642B60L2210/14Y02T10/7005H02K1/2746Y02T10/7225B60L50/51Y02T10/64Y02T10/72
Inventor 立松和高水谷良治山田英治松井信行小坂卓
Owner TOYOTA JIDOSHA KK
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