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Distributed dual-motor driving and vehicle-mounted charging integrated system for electric vehicle and charging control method of same

A dual-motor drive, electric vehicle technology, applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., to achieve the effects of large charging inductance, improved connection relationship, and system volume saving

Active Publication Date: 2020-11-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) There are specific requirements for the structure of the motor, that is, the neutral point of the winding can be drawn out, and most automotive motors cannot meet this requirement

Method used

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  • Distributed dual-motor driving and vehicle-mounted charging integrated system for electric vehicle and charging control method of same
  • Distributed dual-motor driving and vehicle-mounted charging integrated system for electric vehicle and charging control method of same
  • Distributed dual-motor driving and vehicle-mounted charging integrated system for electric vehicle and charging control method of same

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Experimental program
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Embodiment 1

[0048] Embodiment 1: A distributed dual-motor drive and on-board charging integrated system applied to electric vehicles, including a high-voltage power battery, traction motor M1, drive inverter I1, traction motor M2, drive inverter I2, bidirectional DC / DC converter, drive control switch, charging control switch, AC charging input connector, input single-phase EMI filter, core controller.

[0049] As the overall controller of the distributed dual-motor drive and on-board charging integrated system, the core controller is used to perform the functions of motor drive control, AC charging control and mode switching control. The traction motor M1 and the traction motor M2 must have a stator and a rotor assembly, and the stator contains three-phase coil windings, and the three-phase coil windings are symmetrically distributed in space and spaced 120° along the circumferential direction. The rotor is composed of an iron core embedded with permanent magnets and a rotating shaft, an...

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Abstract

The invention discloses a distributed dual-motor driving and vehicle-mounted charging integrated system for an electric vehicle and a charging control method of the same. The system comprises a powerbattery, an alternating current charging input connector, a bidirectional DC / DC module, a charging control switch, a driving control switch, a synchronous traction motor, an inverter of the synchronous traction motor, and a core controller. The system is mainly characterized in that when the system is switched to a charging mode, a charger topological structure with a two-stage conversion structure can be constructed just by connecting wiring terminals of windings of the same phase of two motors with a single-phase power grid. The charging control method is mainly characterized in that a motorrotor is positioned before charging is started, so that the axis of a straight shaft of a rotor permanent magnet coincides with the axis of a U-phase winding coil of a stator; and the noise or buffeting of the motor during charging is suppressed by carrying out equalization control on the phase current of the preceding-stage rectifier. The integrated system provided by the invention is easy to realize, is safe and reliable, can greatly save the space of the whole vehicle, and has good market application potential.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a distributed dual-motor drive and vehicle charging control integrated system for electric vehicles and a charging control method thereof. Background technique [0002] With the improvement of the public's consumption ability and consumption concept, electric vehicles have increasingly become the main choice for urban residents' daily travel. Compared with traditional fuel vehicles, electric vehicles have the advantages of high efficiency, low emissions, and renewable, which are of great significance for saving fossil energy and improving the ecological environment. [0003] The power battery is one of the main energy storage devices of the plug-in hybrid electric vehicle. During driving, the electric energy of the power battery is converted into traction force through the motor system; when parking, the electric energy is supplemented by a charger connected to the powe...

Claims

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Application Information

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IPC IPC(8): B60L53/20B60L15/00B60L15/20B60L15/32
CPCB60L53/20B60L15/007B60L15/20B60L15/32Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 宋强单光乾严明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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