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Backup power supply system for rail transit

A backup power supply and rail transit technology, applied in the field of rail transit, can solve the problems of lack of self-detection and protection functions, high reliability requirements of battery systems, affecting train operation and safety, etc., to improve maintainability and maintenance costs, Enhance the effect of intelligent control of the system and prolong the service life

Active Publication Date: 2015-02-11
惠州美亿瑞创电气设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The backup power supply of the existing EMU adopts nickel-cadmium battery pack, which is used as the emergency backup power supply of the train, which has high requirements on the reliability of the battery system, and the backup power supply affects the normal operation and safety of the train
[0003] However, the nickel-cadmium storage battery system currently used has no self-test and protection functions, blind charging and blind discharging are implemented, and the weight is heavy under the same capacity, the capacity decays quickly, and the pollution is large after the battery is scrapped.

Method used

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  • Backup power supply system for rail transit

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Embodiment Construction

[0023] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the rail transit backup power supply system of the present invention adopts a lithium battery pack as the core power supply module of the power supply system, wherein the number of lithium battery packs specifically adopted can be based on the type of lithium battery, the minimum energy Q of the train demand and the maximum energy Q of the train. The load power P is calculated, and the specific calculation algorithm for the number of lithium battery packs can refer to the relevant calculation methods in the prior art; the specific calculation formula for the minimum energy required by the train is Q=(P1*t + Q1) / (1-&), wherein P1 is the average load power of the train, t is the maximum working time required by the train load in an emergency, Q1 is the maximum energy demand for...

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Abstract

The invention discloses a backup power supply system for rail transit. The backup power supply system comprises a lithium battery pack, a battery management system (BMS), a limit protection relay and a vehicle-mounted charger, wherein the BMS and the limit protection relay are respectively connected with the lithium battery pack; the vehicle-mounted charger is connected with the BMS and the limit protection relay; the BMS is also connected with the limit protection relay and is used for performing unified management and maintenance on the lithium battery pack; the vehicle-mounted charger is used for charging the lithium battery pack by the limit protection relay; the limit protection relay is used for protecting the lithium battery pack under the limit condition, wherein the limit condition is that the lithium battery pack is positioned in an overcharging or over-discharging state. According to the backup power supply system disclosed by the invention, the lithium battery pack is used to replace the original nickel-cadmium storage battery, so light weight and no pollution of the storage battery are realized; besides, due to adoption of the BMS with a specified structure, the reliability and the safety of the power supply system are improved.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a rail transit backup power supply system. Background technique [0002] The backup power supply of the existing EMU adopts nickel-cadmium battery pack, which is used as the emergency backup power supply of the train, which has high requirements on the reliability of the battery system, and the backup power supply affects the normal operation and safety of the train. [0003] However, the nickel-cadmium storage battery system currently used has no self-test and protection functions, blind charging and blind discharging are implemented, and the weight is heavy under the same capacity, the capacity decays quickly, and the pollution is large after the battery is scrapped. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a set of lithium-ion battery system to provide backup power for rail transit, replace the original nickel-ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/033B60L1/00H02J7/00
CPCB60L53/00B60L58/10Y02T10/70Y02T10/7072Y02T90/14
Inventor 刘飞文锋阮旭松龚敏明谢小科
Owner 惠州美亿瑞创电气设备有限公司
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