Why will expand the yangzhou lithium-ion batteries lights?

Lithium ion battery in li-ion battery solar street lamps, lithium electricity solar garden lamp, and other products supporting the use of some of the poor quality of the lithium battery will be the expansion of the batteries phenomenon, what reason is this? The author query the relevant information, this is because: 1, lithium ion embedded

when the lithium ion battery and lithium ion solar street light, lithium ion, solar garden light and other products supporting the use, some poor quality of the lithium ion battery cell expansion phenomenon will occur. What are the reasons? The author queries the related information, found that this is because: 1. Changes in the thickness of the lithium ion embedded process lead to inflation. This is because when the lithium ion batteries, lithium ion embedding come out from the positive electrode and negative electrode, which resulted in increased the gap between the negative electrode layer, resulting in lithium ion battery cell expansion. The law here is cell is thicker, the greater expansion. 2. Lithium battery is not reasonable in the process of manufacturing process parameters and invalid process control is also important reason for the expansion of the battery. This is because in the process of manufacturing cells, cells of pulp dispersion, compaction density, the proportion of negative, temperature control, electrolyte volume and the change of internal pressure and not accuracy will lead to the expansion of the cells. Especially for the water, it is necessary to strictly control the dosage and related parameters, because the charge form of highly reactive lithium carbon compounds are very sensitive to water, once the traffic lights in shandong, strong chemical reaction occurs and produce gas, which leads to the battery internal pressure rise, promote cell expansion. Therefore, in the process of lithium-ion battery production, in addition to rigorous dehumidification pole piece, should also be used in the process of injection liquid dehumidification equipment.