Intelligent battery management of rail transit
The rail transit industry is one of the basic industries in China, and it is also a strategic emerging industry that is highly valued by the country and supported by industrial policies. In the first year of the "14th Five-Year Plan", China Urban Rail Transit Association put forward four major development points of domestic urban rail transit to promote the development of smart urban rail transit. At the same time, the draft of the "Fourteenth Five-Year Plan" and the 2035 long-term goal outline also mentioned that during the "Fourteenth Five-Year Plan" period, China's urban rail transit operating mileage will increase by 3000 kilometers, and it is expected that the cumulative passenger volume will exceed 100 billion person-times, and the cumulative investment completed is expected to reach 1818.8 billion yuan.
With the rapid development of rail transit in China, lead-acid batteries are widely used in rail transit. As the core component of the power supply system, the battery is the last barrier for emergency protection of power supply, communication, signal and other systems. It is not only a powerful guarantee for the normal start of relay protection and operation control of metro power supply system, but also a safeguard for the safe operation of communication, signal and integrated monitoring network.
Under normal circumstances, the power supply, communication, signal and other system loads use the AC power supply provided by the State Grid. However, in the event of mains wave or power failure, the battery as the backup power supply is required for emergency power supply. However, if the battery as the final power supply barrier is abnormal, all major systems of the subway will fail or paralyze, resulting in major accidents such as system equipment failure and subway outage.
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