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A trolley bus and its isolated power supply system

A trolleybus and power supply system technology, applied in electric vehicles, collectors, power management, etc., can solve the problems of low power supply efficiency of trolleybuses, achieve the effects of reducing high-voltage contact points, efficient utilization, and improving safety

Active Publication Date: 2017-04-05
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a trolley bus and its isolated power supply system to solve the problem of low power supply efficiency of traditional trolley bus

Method used

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  • A trolley bus and its isolated power supply system
  • A trolley bus and its isolated power supply system

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Experimental program
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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] An isolated power supply system for a trolleybus, including an isolated DC / DC for connection with a collector, the isolated DC / DC includes a chopper circuit, a transformer, and a rectifier circuit connected in sequence; the input end of the chopper circuit is used to connect A collector, the output end of which is connected to the transformer; the output end of the rectification circuit is connected to a DC bus through a contactor, and the DC bus is connected to a power battery.

[0022] Such as figure 1 , figure 2 A specific implementation is given.

[0023] The isolated DC / DC also includes at least one AC charging interface, the AC charging interface is sequentially connected to the rectifier module and the PFC module, and the output terminal of the PFC module is connected to the input terminal of the chopper circuit. The output of the rectifier ...

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Abstract

The invention relates to a trolley bus and an isolation type power supply system thereof. The isolation type power supply system comprises an isolation type DC (Direct Current) / DC converter, wherein the isolation type DC / DC converter is used for being connected with a current collector and comprises a chopper circuit, a transformer and a rectification circuit which are sequentially connected; an input end of the chopper circuit is used for being connected with the current collector, and an output end of the chopper circuit is connected with the transformer; an output end of the rectification circuit is connected to a DC bus through a contactor, and the DC bus is connected with a power battery. According to the trolley bus and the isolation type power supply system, disclosed by the invention, high-voltage isolation of a vehicle and a wire mesh can be realized, step voltage is eliminated, and the safety of the trolley bus is increased; input voltage of a high-voltage power utilization system can be stabilized in a certain interval through the isolation type DC / DC converter, and thus a high-voltage electric system can work in an efficient area.

Description

technical field [0001] The invention relates to a trolley bus and an isolated power supply system thereof. Background technique [0002] With its "zero emission" advantage, trolleybus can meet the needs of air pollution control, and is in line with the development direction of new energy vehicles, and has attracted people's attention day by day. [0003] Traditional trolleybuses have been controversial due to high-voltage safety issues. They cannot achieve high-voltage isolation from the line network. When the insulation of the vehicle fails, it is easy to connect the vehicle to the ground and cause personal electric shock. Moreover, there are many high-voltage failure points, and the risk of failure is high. If an isolation device is added to the vehicle power system alone, there will be shortcomings such as module duplication and design redundancy. [0004] At the same time, the trolleybus has a large voltage difference between the beginning and the end of the feeder due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L5/00B60L9/00
CPCY02T10/72
Inventor 杨泗鹏李高鹏朱光海郑维陈勇刚余志平高建平康娟秦学程相
Owner ZHENGZHOU YUTONG BUS CO LTD
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