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Traction auxiliary integrated vehicle-mounted energy storage system for urban rail traffic vehicles

A technology for urban rail transit and vehicle assistance systems, applied in railway vehicles, vehicle components, sustainable transportation, etc., can solve problems such as unavoidable batteries due to differences, and achieve the effect of saving the space occupied by equipment

Active Publication Date: 2018-06-15
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of vehicle weight reduction and economy, it is a better choice to design the two systems as one system. However, the difference in the use of the two systems inevitably brings new challenges to battery selection, system structure design, and control strategy formulation. challenge

Method used

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  • Traction auxiliary integrated vehicle-mounted energy storage system for urban rail traffic vehicles
  • Traction auxiliary integrated vehicle-mounted energy storage system for urban rail traffic vehicles
  • Traction auxiliary integrated vehicle-mounted energy storage system for urban rail traffic vehicles

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Experimental program
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Embodiment Construction

[0021] The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 a~1e are the energy flow diagrams of the energy storage system in different modes. Under normal catenary power supply conditions, the battery system continues to supply power to the DC 110V auxiliary system, and the auxiliary inverter and high-voltage air conditioner take power from the catenary. In the traction state, the traction system is powered by the catenary and the battery system at the same time, driving the three-phase motor to work; in the braking state, part of the braking energy is recycled into the battery system, and part of it is consumed by the braking resistor; in the parking state, the traction The system judges whether to charge the battery through the SOC of the battery system. In the case of catenary failure and power failure, the battery supplies power to the auxiliary high-voltage box, auxiliary inverter and high-voltage air condit...

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Abstract

The invention belongs to the technical field of rail transportation vehicle-mounted energy storage, and particularly relates to a traction auxiliary integrated vehicle-mounted energy storage system for urban rail traffic vehicles. The traction auxiliary integrated vehicle-mounted energy storage system includes two loop outputs, one loop supplies power to a vehicle auxiliary system and satisfies the auxiliary system power demand, and the other loop is connected with traction systems to meet the vehicle traction and braking energy recycling requirements; the two loops return through a grounded negative line; a battery box in the energy storage system is provided with multiple clusters of batteries, each cluster of batteries corresponds to one traction system, and the positive and negative external output terminals connected with the traction systems are controlled by normally open relays; the multiple clusters of batteries corresponds to an auxiliary charger after being connected in parallel through diodes and supplies power in turn to the auxiliary system through the voltage competition, the auxiliary loop returns through the grounded traction system negative line, an auxiliary output positive bus-bar is controlled by using a normally closed contactor, and the power supply reliability to the auxiliary system is ensured.

Description

technical field [0001] The invention belongs to the technical field of rail transit vehicle-mounted energy storage, and in particular relates to a traction-assisted integrated vehicle-mounted energy storage system for urban rail transit vehicles. Background technique [0002] Urban rail transit is an important part of the urban transportation system, which has the advantages of large transport capacity, safety and reliability, fast and convenient, low-carbon and environmental protection. The on-board energy storage system plays an important role in the reliability and energy saving of subway vehicles. Traditional lead-acid or nickel-metal hydride auxiliary battery systems can no longer meet the energy-saving and lightweight needs of future subway vehicles. At the same time, as the country vigorously advocates the concept of energy saving and consumption reduction, green, energy-saving and environment-friendly rail transit vehicles will have a broad market. [0003] Lithium-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C3/02B60L1/00B61C17/00B60L7/10
CPCB60L1/00B60L7/10B60L2200/26B61C3/02B61C17/00Y02T30/00
Inventor 齐玉文于青松汪忠海姜久春段党伟王子超王占国张言茹
Owner BEIJING JIAOTONG UNIV
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