päätehtävä akku hallintajärjestelmä on varmistaa että akku paketti toimii sisällä a turvallinen alue, tarjota tarvittavat tiedot vaaditaan ajoneuvolle hallinta, vaste ajassa milloin poikkeavuus tapahtuu, ja määrittää lataus ja purkaus teho akku akku 2c akku sen mukainen ympäristö lämpötila, akku tila, ja ajoneuvo tarpeet. odottaa. Tärkeimmät toiminnot / BMS sisältää akku parametri valvonta % 2c akku tila arvio % 2c online vika diagnoosi % 2c lataus ohjaus % 2c automaattinen tasaus % 2c lämpö hallinta % 2c jne.
The heat-related problems of batteries are the key factors that determine their performance, safety, life and cost. First, the temperature level of a Li-ion battery directly affects its energy and power performance in use. When the temperature is low, the available capacity of the battery will rapidly decay. Charging the battery at an extremely low temperature (such as below 0 degree ) may cause instantaneous voltage overcharge, resulting in internal lithium precipitation and a short circuit. . Second, the heat-related issues of Li-ion batteries directly affect the safety of the batteries. Defects in the manufacturing process or improper operation during use may cause local overheating of the battery, which in turn causes a chain exothermic reaction, eventually causing serious thermal runaway events such as smoke, fire or even explosion, threatening the lives of vehicle drivers and passengers Safety. In addition, the operating or storage temperature of lithium-ion batteries affects their service life. The suitable temperature of the battery is about 10~30 degree , too high or too low temperature will cause a rapid decay of battery life. The large size of the power battery makes the ratio of its surface area to volume relatively smaller, and the internal heat of the battery is not easily dissipated, and problems such as uneven internal temperature and excessive local temperature rise are more likely to occur, thereby further accelerating battery attenuation, shortening battery life, and increasing user capacity. total cost of ownership.
The battery thermal management system is one of the key technologies to deal with the heat-related problems of the battery and ensure the performance, safety and life of the power battery. The main functions of the thermal management system include:
1. Tehokas lämpö haihtuminen kun akku lämpötila on korkea estää lämpö karkaaminen onnettomuudet;
2. Esilämmitys akku milloin akku akku lämpötila on matala, lisäys akku akku lämpötila, ja varmistaa lataus ja purkaus suorituskyky ja turvallisuus matala lämpötila;
3. Vähennä lämpötila ero sisään akku pakkaus % 2c tukahduttaa muodostuminen paikalliset kuumat pisteet% 2c estää akku alkaen hajoaa liian nopeasti korkea lämpötila sijainnit 2c ja vähentää yleinen käyttöikä akku paketti.
