Melhor fabricante de sistema de medição de temperatura de armazém de bateria de lítio de fibra óptica distribuída

Why do lithium batteries need temperature measurement

With the development of emerging clean energy sources such as wind energy, hydropower, and nuclear energy, energy storage technologies have also been vigorously developed. Lithium ion battery container energy storage stations are widely used in the field of power storage due to their advantages such as high energy density, high output power, longa vida útil, environmental friendliness, and wide applicability. Although lithium-ion battery energy storage containers have the above advantages, if the lithium-ion batteries inside are subjected to thermal abuse, it is easy to cause abnormal heat accumulation inside the batteries, increase surface temperature, and trigger thermal runaway of lithium-ion batteries, leading to dangerous situations such as explosions and fires. Given the close arrangement and high energy density of lithium-ion batteries inside the lithium-ion battery energy storage container, if individual batteries experience thermal runaway, it is highly likely to cause nearby batteries to heat up, leading to the dangerous situation of thermal runaway propagation and causing a fire disaster in the entire energy storage container, resulting in huge economic losses. Portanto, a safe and reliable temperature monitoring technology for the prefabricated cabin of electrochemical energy storage stations is of great significance for the safe use and expansion of their application scope.

Atualmente, various consumer electronics, mobile power supplies, new energy vehicles, etc.. represented by mobile phones, all use lithium battery devices. With the continuous increase in usage, manufacturers of batteries are also emerging. Ao mesmo tempo, acidentes como incêndios e explosões em armazéns de baterias de lítio também são frequentes. As baterias de lítio precisam ser entregues e armazenadas em lotes durante o processo de produção após a formação e divisão de capacidade. Durante este processo, baterias de lítio ainda não foram produzidas, e seu estado é extremamente instável, o que pode facilmente levar a curtos-circuitos internos ou problemas de vazamento, em última análise, resultando no aumento da temperatura local das baterias de lítio. Se não for detectado a tempo, pode causar acidentes como incêndios ou explosões. No entanto, no processo de gestão tradicional de armazéns de baterias de lítio, há falta de monitoramento e gerenciamento da temperatura da bateria. Alguns fabricantes usam dispositivos de detecção de fumaça e temperatura relativamente comuns para detecção de petróleo bruto.. Ordinary temperature sensors cannot obtain temperature information in the early stage of temperature rise, and only emit alarm information when it reaches 70 ℃ or above. Smoke sensors only emit alarm information when smoke occurs, which cannot achieve the goal of preventing fires in the early stage. No entanto, some methods that use medição de temperatura sem fio, such as 433MHz, Zigbee, Lora, etc., due to the large number of battery storage points, will ultimately generate serious co frequency interference and temporary frequency interference, leading to communication failure of wireless monitoring equipment. The delay of the sensor points sent during time sharing is very serious, making it difficult to accurately monitor the temperature of the battery storage in real time. Portanto, it is very important to provide a temperature monitoring system technology for battery storage based on fibra óptica distribuída medição de temperatura, which can detect the temperature changes of the stored lithium batteries and turnover lithium batteries with severe temperature rise. This can effectively reduce the occurrence of fires and explosions, detect problems in a timely manner, and ensure the safety of battery warehouses and people’s lives and property.

Atualmente, there is not much research on temperature monitoring technology specifically for electrochemical energy storage stations. The internal temperature monitoring of electrochemical energy storage stations currently in use mostly uses traditional thermocouple medição de temperatura or infrared temperature measurement technology. Thermocouples have high temperature measurement accuracy and are generally reliable, but the temperature measurement area of a single thermocouple is too small. When applied in large spaces, it must be laid out point by point, and still cannot meet the requirements of multi-point temperature measurement in large spaces. Infrared temperature measurement also has the problem of small temperature measurement area and low temperature measurement accuracy, which cannot meet practical engineering needs well.

The technology used in the sistema distribuído de medição de temperatura de fibra óptica is different from the limitations of traditional temperature measurement methods, which have a small temperature measurement area. It has a temperature measurement length of tens of kilometers and can ensure the required temperature measurement accuracy. The material itself is safe and reliable, making it more suitable for temperature monitoring in lithium-ion battery electrochemical energy storage stations.

Sensor de temperatura de fibra óptica, Sistema de monitoramento inteligente, Fabricante distribuído de fibra óptica na China