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Vehicle control device and control method

A technology for a control device and a vehicle, applied in the direction of the control device, control system, control drive, etc., can solve problems such as the unsatisfactory viewpoint of protecting the inverter, battery and peripheral components, and achieve the effect of reducing discomfort

Inactive Publication Date: 2013-12-11
YASKAWA DENKI KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the current that is not controlled by the inverter flows to the battery, which is not ideal from the viewpoint of protecting the inverter, battery, and peripheral components.

Method used

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  • Vehicle control device and control method
  • Vehicle control device and control method
  • Vehicle control device and control method

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0027] The vehicle control device according to the first embodiment of the present invention is mounted on a figure 1 The drivetrain 2 is shown in an electric vehicle 1 .

[0028] Such as figure 1 As shown, an electric vehicle 1 includes an electric motor 4 (hereinafter simply referred to as a motor 4 ) as a driving source, and an output shaft 6 of the motor 4 and an input shaft 10 of a speed reducer 8 are coaxially provided and connected to each other. The output shaft 14 of the speed reducer 8 is provided parallel to the input shaft 10 , and the drive gear 12 provided on the input shaft 10 meshes with the driven gear 16 provided on the output shaft 14 and having a larger diameter than the drive gear 12 . Accordingly, the speed reducer 8 transmits the decelerated rotation of the input shaft 10 to the output shaft 14 .

[0029] Furthermore, an output gear 18 is provided on the output shaft 14 of the speed reducer 8 , and the output gear 18 meshes with an input gear 22 of a d...

no. 2 Embodiment approach

[0065] Next, a second embodiment of the present invention will be described. In the electric vehicle 1 of the second embodiment, a battery voltage sensor 80 ( image 3 ). About other points, it is basically the same structure as the above-mentioned 1st Embodiment.

[0066] Figure 6 It is a flowchart showing the content of switching control of the energization mode executed while the electric vehicle 1 is running in the second embodiment.

[0067] exist Figure 6 In the control operation shown, first, in step S11 , based on input signals to the control unit 40 , output values ​​of the motor rotational speed sensor 76 , the gear position sensor 78 and the battery voltage sensor 80 are read.

[0068] In the next step S12, based on the output value of the position sensor 78 read in step S11, it is determined whether or not the shift position is the N position.

[0069] If the result of judgment in step S12 is that the shift position is not the N position, that is, in the cas...

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PUM

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Abstract

In the present invention, a motor (4) for driving a vehicle is disposed so that the motor is electrically connected to a battery (42) by way of an inverter (44) and that the linkage of wheels (36, 38) to the motor (4) is always maintained. If the shift range is a drive range, when the rotational speed of the motor (4) is less than a prescribed threshold value (n), the conductive mode of the motor (4) is set to a low speed mode in which electricity is conducted to a first coil (61) and a second coil (62), and when the rotational speed of the motor (4) is equal to or greater than the threshold value (n), the conductive mode is set to a high speed mode in which electricity is conducted only to the first coil (61). However, if the shift range is a neutral range, control of the inverter (44) is suspended and, as regenerative braking control, the conductive mode is switched to high speed mode not only in the high speed rotational range where the rotational speed of the motor (4) is equal to or greater than the threshold value (n), but also in at least a part of a lower speed rotational range.

Description

technical field [0001] The present invention relates to a control device for a vehicle in which the connection between a vehicle driving motor and wheels is always maintained, and the motor operates as a generator during deceleration to perform deceleration regeneration. Background technique [0002] In an electric vehicle that uses an electric motor as a driving source, during deceleration and regeneration, the regenerative power generated by the motor acting as a generator can charge the battery, and the motor can cause resistance to the rotation of the wheels, which can The motor is used as a regenerative brake. [0003] For example, as disclosed in Patent Document 1, a three-phase motor is generally used as a driving motor for an electric vehicle, and the three-phase motor is driven by electric power supplied from a battery and converted into AC by an inverter. In addition, during deceleration regeneration, the inverter functions as a converter to convert regenerative p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L9/18H02P27/06
CPCB60L7/14B60L15/007B60L15/2009B60L2240/421B60L2240/429B60L50/51Y02T10/64Y02T10/70Y02T10/72H02P25/188
Inventor 川地智洋古川晶博
Owner YASKAWA DENKI KK