关键词: 地铁, 铅酸蓄电池, 锂电池, 磷酸铁锂

Abstract: The volume and weight of lead-acid battery equipment is large. When the environment of the computer room is poor, the operating life of the battery will be affected, the equipment failure rate increases, and there is a risk of thermal runaway. Lithium battery has the obvious advantages of small size, light weight, high temperature resistance, excellent charge-discharge cycle performance, fast charging, more environmental friendly and so on. Therefore, this paper analyzes the characteristics of different types of lithium batteries and compares them with the performance of mainstream lead-acid batteries. Combined with the characteristics of rail transit, the application suggestions of lithium batteries in the reconstruction of existing lines of urban rail transit are put forward.

Key words: urban rail transit, lead-acid battery, lithium battery, lithium iron phosphate