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Network-free self-walking energy storage and high-frequency auxiliary converter system for rail transit

A technology for high-frequency auxiliary and rail transit vehicles, which is applied in the field of grid-free self-propelled energy storage and high-frequency auxiliary conversion systems for rail transit. It can solve the problems of short battery life, environmental protection, and difficult maintenance, and achieve enhanced safety. , Increased reliability, high integration effect

Pending Publication Date: 2020-08-14
BEIJING BEIJIAO NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on-board energy storage batteries for rail transit vehicles are generally lead-acid and nickel-cadmium batteries, and these batteries have the characteristics of short life, not environmentally friendly, memory effect, and difficult maintenance.

Method used

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  • Network-free self-walking energy storage and high-frequency auxiliary converter system for rail transit

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] like figure 1 As shown, a gridless self-propelled energy storage and high-frequency auxiliary conversion system for rail transit provided by the present invention includes: a lithium titanate battery pack-1, a positive fuse 2, a voltage sensor 3, an insulation detection module 4, Current sensor 5, positive contactor 6, traction power supply output interface 7, high frequency auxiliary converter 8, DC1500V power input interface 9, negative fuse 10, negative contactor 11, manual maintenance switch 12, BMS battery management system 13, Communication and control interface 14, pre-charging contactor 15, pre-charging resistor 16, AC380V output interface 17, DC110V non-permanent bus output interface 18, unidirectional DC / DC converter 19, DC110V permanent bus output interface 20 and lithium titanate Battery pack two 21;

[0043] The positive electrode of the...

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PUM

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Abstract

The invention relates to a network-free self-walking energy storage and high-frequency auxiliary converter system for rail transit. The system comprises a lithium titanate battery pack I, a positivefuse, a voltage sensor, an insulation detection module, a current sensor, a positive contactor, a traction power supply output interface, a high-frequency auxiliary converter, a DC 1500V power supplyinput interface, a negative fuse, a negative contactor, a manual maintenance switch, a BMS battery management system, a communication and control interface, a pre-charging contactor, a pre-charging resistor, an AC380V output interface, a DC110V non-permanent bus output interface, a one-way DC / DC converter, a DC110V permanent bus output interface and a lithium titanate battery pack II. The electricenergy is stored in the lithium titanate battery pack, when a vehicle needs to be put into the energy storage system, the vehicle sends an input signal, the BMS makes the positive contactor and the negative contactor in the energy storage system be closed after receiving a starting signal, and power is supplied to a vehicle traction system through the traction power supply output interface.

Description

technical field [0001] The invention relates to the intersecting field of rail transit power supply technology, converter technology and energy storage technology, in particular to a gridless self-propelled energy storage and high-frequency auxiliary converter system for rail transit. Background technique [0002] The non-grid self-propelled system for rail transit combines rail transit power supply and inverter technology with lithium titanate battery energy storage technology to form an independent system installed on the bottom of urban rail and bullet trains. When the normal power supply of the vehicle fails, Vehicle control invests in non-grid self-propelled energy storage and high-frequency auxiliary conversion system to realize non-grid self-propelled vehicles. [0003] Rail transit such as subways and bullet trains is considered to be the greenest mode of transportation due to its large capacity, fast speed, safety, environmental protection, and energy saving. Due t...

Claims

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Application Information

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IPC IPC(8): B60L50/60B60L58/10H02J7/00H02J9/06
CPCB60L50/60B60L58/10H02J7/0068H02J9/062B60L2240/54Y02T10/70
Inventor 王宇姚海英马泽宇梁珏孟学东韩耸马彬睿
Owner BEIJING BEIJIAO NEW ENERGY TECH CO LTD