澳门沙金在线平台(中国)官方网站IOS/Android版APP

Particles or trace metal residues on the battery electrode, small defects on the separator, and dust introduced during the assembly process of the battery cell can all cause micro short circuits inside the battery cell. When there are metal impurities such as iron (Fe), copper (Cu), zinc (Zn) in the materials of lithium batteries and the production and assembly environment of lithium batteries, the voltage during the battery formation stage reaches the redox potential of these metal elements. These metals will first oxidize at the positive electrode and then be reduced at the negative electrode. When the metal elements at the negative electrode accumulate to a certain extent, the hard edges of the deposited metal will pierce the separator, causing the battery to self discharge. Self discharge can have a fatal impact on lithium-ion batteries, so it is particularly important to prevent the introduction of metal foreign objects from the source.

Denis has a complete set of control technologies in the construction of ventilation and air conditioning systems in the production workshop, which can provide protection for the control of copper, iron, and zinc foreign objects in the user's production environment. The specific solutions are as follows:

1. Control of engineering materials: The ventilation ducts are made of non-metallic, stainless steel, aluminum plates, and other materials that do not contain metals such as iron (Fe), copper (Cu), and zinc (Zn).

2. Select specially designed dehumidifiers and air conditioning equipment: Avoid using materials containing metals such as iron (Fe), copper (Cu), zinc (Zn), etc. for the equipment in contact with the air conditioning treatment. Use isolation methods to avoid metal impurities from the equipment itself from mixing into the treated air.

3. Control of the construction process: During the construction process, metal ion test strips and metal ion detectors are used to monitor and prevent the ventilation pipeline from being contaminated by metal impurities in the surrounding environment.