Judgment of Unqualified and Qualified 3.7V Polymer Lithium - ion Batteries

Based on the following points, a preliminary judgment can be made on unqualified and qualified 3.7V polymer lithium - ion batteries: First, what problems will occur if there is floating powder on the electrode sheet of a 3.7V polymer lithium - ion battery? After the electrode sheet of a 3.7V polymer lithium - ion battery with floating powder is wound into a battery and injected with electrolyte, the floating powder will move with the movement of the electrolyte in the battery. When it moves to some areas prone to problems, such as where the separator has defects, it may cause problems such as micro - short - circuit and high self - discharge of the battery. Second, what problems will occur if the electrode sheet of a 3.7V polymer lithium - ion battery is pressed too thick or too thin? If the thickness of the pressed electrode sheet of a 3.7V polymer lithium - ion battery does not meet the requirements, first of all, the thickness of the battery will not meet the requirements. In addition, different thicknesses of the pressed electrode sheet will result in different micropores in the active material. Thus, when injecting electrolyte, the amount of electrolyte absorbed by the electrode sheet is different, which will cause differences in battery performance. Third, what impact will the short - circuit of the battery core of a 3.7V polymer lithium - ion battery have on the battery? The short - circuit of the battery core of a 3.7V polymer lithium - ion battery will prevent the battery from being formed, and the made - up battery can only be scrapped. Fourth, what impact will the spiral shape of a 3.7V polymer lithium - ion battery have? If a 3.7V polymer lithium - ion battery shows a spiral shape, it will affect the size of the battery core, cause difficulties when being inserted into the packaging film, and may also cause a short - circuit. Fifth, what impact will the burrs on the electrode sheet of a 3.7V polymer lithium - ion battery have on the battery? The burrs on the electrode sheet of a 3.7V polymer lithium - ion battery may pierce the separator, making the positive and negative electrodes come into contact and causing an internal short - circuit of the battery. The above points are only preliminary judgments. For more details, please consult Xiaoli.