In this column, we share with you regularly our experience
in major application areas where usage of dehumidification is both extensive and essential.
Moisture Ruins Lithium Batteries
Lithium and lithium-ion batteries are incredibly efficient and can keep a phone, laptop, electric cars, toys, medical devices and other consumer electronic devices running all day.
Lithium batteries have become ubiquitous over the past decade, powering our cellphones, laptops, ipods, and even cars. Lithium batteries are popular because they pack significantly more energy into a small package, but their chemistry makes them more vulnerable.
Typical Problems in Lithium Battery Production resulting from Uncontrolled Moisture
Reduce charging capacity
Higher chances of explosion
Swelling in batteries
Reduced product life
Ideal Dry Room Conditions for Lithium Battery Manufacturing
Moisture level in Lithium-ion battery processing areas should have
less than (-) 35°C dew-point and/or moisture content of 0.14 grams
per kg of dry air.
Room temperature should be maintained at recommended levels, around
25°C, with tolerance of +/(-) 2°C along with dew points in the range of
(–) 35°C to (–) 45°C. (0.14 to 0.04g/kg). It is always advisable to keep
the room temperature slightly warm, so that the workers working in the
processing area are comfortable.
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.
recommends to develop stringent environment control chamber for
manufacturing lithium batteries (Dry Room) and incorporate patented
technology, which ensures optimum performance, even
at ultra low dew point, up to (-) 90°C. Additionally, Bry-Air recommends
Dry Room to be vapour tight and access must be controlled through
an air lock vestibule.