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Electric vehicles and motor control systems

A motor control and resistance technology, applied in electric vehicles, control drives, electrical devices, etc., can solve problems such as DC/DC converter shutdown, and achieve the effect of avoiding potential safety hazards

Active Publication Date: 2018-06-12
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To this end, an object of the present invention is to propose a motor control system that can solve the problem that the DC / DC converter is shut down due to overcurrent protection

Method used

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  • Electric vehicles and motor control systems
  • Electric vehicles and motor control systems
  • Electric vehicles and motor control systems

Examples

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0019] The following describes the motor control system provided by the embodiments of the present invention and the electric vehicle with the motor control system with reference to the accompanying drawings.

[0020] figure 1 is a block schematic diagram of a motor control system according to an embodiment of the present invention. Such as figure 1 As shown, the motor control system includes: a drive board 10 , a DC / DC converter 20 , a resolver unit 30 and a protection circuit 40 .

[0021] Wherein, the driving board 10 is co...

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Abstract

The invention discloses an electric automobile and a motor control system. The motor control system comprises a driving plate, a DC / DC converter, a rotational deformation unit, and a protection circuit, wherein the driving plate is connected with a motor to drive the motor; the DC / DC converter converts high voltage direct currents into low voltage direct currents, and the output terminal of the DC / DC converter is connected with the driving plate so as to supply electricity for the driving plate; the rotational deformation unit measures an angular position of the motor; the protection circuit is connected between the rotational deformation unit and the output terminal of the DC / DC converter, so that the DC / DC converter can supply electricity for the rotational deformation unit through the protection circuit; when the rotational deformation unit is failed, the protection circuit performs current limiting treatment to prevent the DC / DC converter from overcurrent protection so as to prevent the driving plate from being power off, so that when the rotational deformation unit is failed, the DC / DC converter is guaranteed to still supply electricity for the driving plate, and the driving plate normally works, potential safety hazards caused by that the motor is instantaneously out of control can be avoided, and a safe driving experience can be provided for users.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a motor control system and an electric vehicle with the motor control system. Background technique [0002] In the relevant motor control system, modules such as the resolver unit and the drive board are powered by the same DC / DC converter to save costs. However, when the resolver unit fails, the DC / DC converter will be over-current protected and shut down. At this time, the drive board circuit will be affected by it and will lose power, so that the motor of the electric vehicle will fail due to the loss of control of the drive board. Stop running, the electric car stops suddenly during driving, which is likely to cause rear-end collision accidents. [0003] Therefore, related technologies need to be improved. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00B60L15/20
CPCB60L3/003B60L15/20Y02T10/72
Inventor 娄建勋刘荣宏
Owner BEIJING ELECTRIC VEHICLE
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