电动汽车电池保护电路的研制

Lenin Selva M, Monish R, Sankarnarayanan P, Veerakumar S
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引用次数: 0

摘要

交通运输是世界上任何一个国家发展的关键。目前我们主要依靠燃料驱动的内燃机进行运输。燃油汽车对环境造成严重污染,所以我们正在转向电动汽车。但在这些日子里,电动汽车的燃烧是从IC发动机向电动机过渡的主要挫折。因此,在这个项目中,我们设计了一个电路来保护电动汽车电池在加热和过流等异常情况下的保护。为了获得最佳的电池性能,锂离子电池的理想工作温度范围应为20-45℃。世界各地的电动汽车都是由锂离子电池供电的。与其他类型的燃油汽车相比,锂离子电池电动汽车具有无振动、无噪音、无污染的巨大优势。然而,锂离子电池在运行时会产生大量的热量,导致电池的温度升高。电池温度过高时操作车辆是不安全的。电池隔离保护电路对电动汽车的安全可靠运行至关重要。利用LM35传感器和PIC单片机检测电池的温度,利用继电器在异常情况下断开电路。此外,过流问题需要通过使用分流电阻来解决。分流电阻的作用是测量流过电路的电流。保护电路将检测过流并测量温度,如果任何一个参数增加最大值,则单片机将指示继电器关闭电路。因此,在这个电路的帮助下,我们可以保护电动汽车电池
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of Protection Circuit for EV Batteries
Transportation is the key for development of any country in the world. At present we majorly depend on the fuel driven IC engines for transportation. Fuel based vehicles causes severe pollution to the environment so we are moving towards Electric vehicles. But during these days the burning of EV’s is the major setback for the transition from IC engine to Electric motor. So, in this project we designed a circuit to protect the EV battery under abnormal conditions like heating and overcurrent. In order to gain optimum battery performance, the ideal operating temperature range of the Li-ion battery should be 20-45 ℃ . The electric vehicles are powered by lithium-ion battery throughout the world. Compared with other types of fuel vehicles, lithium-ion battery electric vehicles have the great advantages of no vibration, no noise and no pollution. However, Li-ion batteries generate a vast amount of heat when they are operated, resulting in an increase in the temperature of the battery. It is not safe to operate the vehicles when the temperature of the battery is high. The protection circuit for isolating the battery is very important for the safe and reliable operation of the electric vehicle. By using the LM35 sensor and the PIC microcontroller we can detect the temperature of the batteries using relays we can break the circuit under abnormal conditions. Also, the problem of overcurrent needs to be addressed by using the shunt resistors. The purpose of shunt resistor is to measure the current flowing through the circuit. The protection circuit will detect the overcurrent and measure the temperature and if any one parameter increases the maximum value, then microcontroller will indicate the relay to close the circuit. So, with the help of this circuit, we can protect the EV batteries
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