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Electric vehicle traction-bidirectional charging system based on quadruple interleaved parallel DC/DC

A quadruple staggered, electric vehicle technology, applied in the direction of electric vehicle charging technology, electric vehicles, control/regulation systems, etc., to achieve the effect of reducing the cost of the whole vehicle, reducing the weight of the vehicle, and saving space and volume

Active Publication Date: 2020-10-23
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problems of electric vehicles and provide a traction-two-way charging system for electric vehicles based on quadruple interleaved parallel DC / DC

Method used

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  • Electric vehicle traction-bidirectional charging system based on quadruple interleaved parallel DC/DC
  • Electric vehicle traction-bidirectional charging system based on quadruple interleaved parallel DC/DC
  • Electric vehicle traction-bidirectional charging system based on quadruple interleaved parallel DC/DC

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specific Embodiment approach 1

[0023] Specific embodiment one: the following combination Figure 1 to Figure 6 This embodiment is described. The electric vehicle traction-bidirectional charging system based on quadruple staggered parallel DC / DC described in this embodiment, see figure 1 , taking the rated power of the system 60kW as an example. The system is mainly divided into four parts: the first part is the high-voltage battery E of the electric vehicle. Taking the battery voltage of 400V as an example, the two ends are connected in parallel with the capacitor C1. The second part is a DC / DC converter based on quadruple staggered parallel connection, which consists of four inductors and switch tubes M1-M8 to form four bridge arms, and the midpoint of each bridge arm is connected to an inductor. The use of quadruple interleaved parallel topology can eliminate common mode voltage and reduce battery charge and discharge current ripple. The third part is the three-phase motor and its inverter. The motor is...

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Abstract

The invention discloses an electric vehicle traction-bidirectional charging system based on quadruple interleaved parallel DC / DC, belongs to the technical field of power electronics, and aims to solvethe problems of an existing electric vehicle. The electric vehicle traction-bidirectional charging system comprises a high-voltage battery, a quadruple interleaved parallel DC / DC converter, a three-phase inverter and a multiplexing control unit, the multiplexing control unit is switched among a vehicle driving mode, a three-phase charging mode, a single-phase charging mode, a single-phase V2G mode and a three-phase V2G mode, and the multiplexing control unit comprises switches K1 to K8. The two sets of systems share the same set of DC / DC converter.

Description

technical field [0001] The invention relates to a multiplexing control technology of an electric vehicle, and belongs to the technical field of power electronics. Background technique [0002] Electric vehicles and plug-in hybrid vehicles will be the mainstream models in the future that meet stringent fuel consumption and emissions regulations. The cost and performance of electric vehicle charging equipment is a major factor limiting the development of electric vehicles. It is very urgent to research on-board high-power integrated charging systems suitable for electric vehicles and implement their applications. The electric drive system and the charging system of the existing electric vehicle are two independent systems, which greatly occupy the limited space and volume of the electric vehicle, increase the weight of the vehicle, and the cost is also high. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to solve the existing problems of electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/24B60L55/00H02J3/32H02M3/158H02M7/5387
CPCB60L53/24B60L55/00H02J3/322H02M3/158H02M7/5387B60L2210/12B60L2210/14B60L2210/40Y02T90/14
Inventor 张千帆崔淑梅曲建真邵猛徐国强
Owner HARBIN INST OF TECH
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