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Conversion circuit used for electric vehicle

A technology for conversion circuits and electric vehicles, which is applied in the direction of output power conversion devices, electrical components, and adjustment of electrical variables, and can solve problems such as one-way conduction of conversion circuits

Inactive Publication Date: 2018-04-13
安徽一维新能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a conversion circuit for electric vehicles, which can realize the two-way communication of the power conversion circuit, and solve the problem that the conversion circuit of the vehicle power supply in the prior art can only conduct in one direction

Method used

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  • Conversion circuit used for electric vehicle
  • Conversion circuit used for electric vehicle
  • Conversion circuit used for electric vehicle

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Embodiment Construction

[0059] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the implementation manners of the present invention, and are not intended to limit the implementation manners of the present invention.

[0060] Such as figure 1 Shown is a schematic diagram of a conversion circuit for an electric vehicle according to an embodiment of the present invention. exist figure 1 The conversion circuit may include: a voltage conversion unit, which is used to convert the high-voltage direct current input from the high-voltage port 1 into a low-voltage direct current in the forward working mode; and convert the received low-voltage direct current in the reverse working mode The direct current is converted into high-voltage direct current and output through the high-v...

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Abstract

An embodiment of the invention provides a conversion circuit used for an electric vehicle, and belongs to the field of the electric vehicle. The conversion circuit comprises a voltage conversion unitused for converting a high voltage electric signal input from a high voltage port of the conversion circuit into a low voltage electric signal or converting a low voltage electric signal input from alow voltage port of the conversion circuit into a high voltage electric signal, a rectifying unit used for isolating the electric signals from the high voltage port and the high voltage port for avoiding mutual influence of the electric signals at the two ends, and a processor used for generating electric signals for controlling the voltage conversion unit and the rectifying unit. By virtue of theconversion circuit, two-way communication of the power supply conversion circuit can be realized, so that the problem that the conversion circuit of the vehicle-mounted power supply in the prior artcan only realize one-way communication is solved.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a conversion circuit for electric vehicles. Background technique [0002] Traditional new energy vehicle-mounted DC-DC power supplies generally work in one direction, mainly to convert the high-voltage power of the power battery into the low-voltage power of the battery. At present, mainstream circuits include dual-tube forward topology and phase-shifted full-bridge topology (such as image 3 ), although these topologies have simple circuit structures, they have disadvantages such as low efficiency, low operating frequency, large volume, and need for additional heat dissipation, which increasingly fail to meet the requirements of automobile OEMs. At present, there are DC-DC power supplies with multi-level topology at home and abroad. The front stage of the circuit uses a BUCK circuit to convert a certain range of power battery voltage into a certain DC output voltage, and the latt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/3353
Inventor 汪国军黄少峰吴升吕东冬朱立山翟周林
Owner 安徽一维新能源技术有限公司
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