Confined space fever of polymer battery research

Source: 2020 - 04 - 11 backs hits: polymer battery in the closed space heating polymer lithium ion battery in the underwater vehicle sealed battery box the heat generated by the extremely difficult to dissipate, leads to the rise of temperature of the polymer lithium ion battery, affect its performance and security. With the development of ocean in our country and explore, electric underwater vehicle has been widely used. For electric submersible put forward higher request, also more strict to the requirement of battery pack. Polymer lithium ion battery has a large capacity, high specific energy and cycle performance is good wait for an advantage, has become a kind of potential power battery, is one of the sources of energy of underwater vehicle. However, the use of the hidden trouble of the polymer lithium ion battery is burning violently, in some cases, such as lithium battery fire Boeing 787 aircraft, the iphone's battery explosion and combustion of hangzhou electric taxis, including combustion heat loss is an important reason. Underwater vehicle battery in polymer lithium-ion battery pack particularly bad work environment, so the analysis of polymer lithium ion battery temperature field is of great significance. Established a closed cabin underwater vehicle, the mathematical model of polymer lithium ion battery. The simulation results show that the heat generated by the battery mainly along the X, Y direction, both ends of the battery has a little influence on temperature field.