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High-frequency triangular transformation technology-based electric vehicle motor driving DC/DC transformation device

A technology of motor drive and conversion device, which is applied in the direction of electric vehicles, battery circuit devices, output power conversion devices, etc., to achieve the effect of improving performance and realizing the integration of hardware resources

Active Publication Date: 2015-04-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of motor drive, high-voltage battery charging, and high-voltage battery pack to low-voltage battery DC / DC conversion in the existing electric vehicle technology, the present invention provides a motor-driven DC / DC conversion device for electric vehicles with high-frequency delta conversion technology

Method used

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  • High-frequency triangular transformation technology-based electric vehicle motor driving DC/DC transformation device

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Embodiment 1

[0029] Such as figure 1As shown, the present invention provides a motor-driven DC / DC conversion device for electric vehicles with 220VAC charging function and high-frequency delta transformer technology. The device includes a permanent magnet synchronous motor 1, a motor-driven inverter bridge 2, a supporting capacitor 3, and a battery side single-phase inverter bridge 4, pre-charging control module 5, high-voltage battery pack 6, rectifier circuit 7, charging-side support capacitor 8, charging-side single-phase inverter bridge 9, low-voltage rectification circuit 10, and triangular transformer 11.

[0030] When the vehicle is running normally: the high-voltage battery pack 6 drives the permanent magnet synchronous motor 1 through the motor-driven inverter bridge 2, and the motor-driven inverter bridge 2 controls the four-phase limit operation of the motor 1. At the same time, the single-phase inverter bridge 4 on the battery side performs high-frequency Single-phase inverter ...

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Abstract

The invention relates to a high-frequency triangular transformation technology-based electric vehicle motor driving DC / DC transformation device, aims to solve the problems of DC / DC transformation from a high-voltage battery pack to a low-voltage battery during motor driving and high-voltage battery charging in an existing electric vehicle technology, and provides a novel electric vehicle motor driving DC / DC transformation device, which comprises a DC / DC transformation device, a motor driving inverter bridge and a 22V AC charging interface circuit. According to the device, a high-frequency triangular transformation technology can be implemented; a driving motor has a 12V low-voltage power output function, so that power can be supplied to vehicle-mounted equipment; the function of isolating and charging a power battery of an electric vehicle can be realized.

Description

technical field [0001] The invention relates to the field of electric vehicle motor drive and battery charging, in particular to an electric vehicle motor drive high-frequency delta transformer DC / DC conversion device. Background technique [0002] At present, electric vehicle technology is developing rapidly, and the electric vehicle market is growing day by day. However, most electric vehicle motor drive devices adopt conventional topological structures and lack innovation. The delta transformer technology has long been applied in the field of power frequency, but in the high frequency range. It has not been used. Applying the high-frequency delta transformer technology to the electric vehicle motor drive DC / DC conversion technology can realize the control decoupling of "one input and two outputs", thereby realizing the integration of hardware resources. It is conducive to the technological innovation and long-term development of electric vehicles. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/02H02M3/335H02P6/08
CPCH02J7/022H02M3/33523H02P6/085
Inventor 张承宁潘丽雯董玉刚
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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