Effects of Uncontrolled Humidity
Lithium batteries are affected by uncontrolled temperature and humidity. If the lithium battery is exposed to moisture during production, it may lead to impairing quality, thus:
Reduced product life
Reduced performance (charging capacity)
Raise safety concerns including chances of explosion
Cause of Uncontrolled Humidity
Pure Lithium metal is extremely sensitive to even tiny amounts of moisture in the air. Hence, slightest of exposure to moisture leads to reduced performance and reduced product life of Lithium-ion batteries.
Moisture level in Lithium-ion battery processing areas should have less than (-) 35°C (-31°F) dew-point and/or moisture content of 14 grams per kg of dry air
Room temperature should be maintained at recommended levels, around 25°C (77°F), with tolerance of +/(-) 2°C (36°F) along with dew points in the range of (-) 35°C (-31°F) to (-) 45°C (-49°F). (0.14 to 0.04 g/kg).
The air change rate in the production room should be more than 50 air changes per hour with maintenance of minimum fresh air introduction for positive room pressure and ventilation for workers
High technology often entails working in precisely controlled environmental conditions. Lithium batteries are a classic example of a product where production is not possible in the absence of efficient dehumidification
. Dehumidification, or moisture control, has proven itself to be a critical factor in the control of the environment in the dry rooms without which lithium battery manufacturing is not feasible.
Greeme's technology for dehumidifiers ensures optimum performance of dehumidifiers, even at the ultra low dew point, up to (-) 90°C (-130°F). Greeme also provide the solution for Dry Rooms with Environment Control Equipment for Lithium Battery Manufacturing.