Why lithium production desiccant?
During the process of manufacturing, for example, slurry
dispersion, discreteness with the proportion of C/A and humidity
control will directly affect the degree of expansion of the battery
cells. Especially water, because the rechargeable formed highly
reactive lithium-carbon compounds is very sensitive to water, which
will cause violent chemical reaction.
The gas produced by the reaction will cause the increase of
internal air pressure of the battery cells, which increases the
expansion behavior of battery cells. Therefore, in production, as
well as the plate should be strictly remove dehumidify,
dehumidification equipment during the process of water filling
should be used to ensure that the relative humidity of air should
be less than 2%, and dew point humidity (Due to the decrease of
temperature, the contained vapor by humid air in atmosphere will
reach the temperature in saturated state and beginning to
condensate) is less than -40℃.
In very dry conditions, the absorption probability of plate and
electrolyte is greatly reduced.
The wheel of low dew point dehumidifier
Dehumidifiers of Lianzhong low dew point series use silica gel and
molecular sieve honeycomb absorption drying rotating wheel produced
by enterprises in Sweden / Japan / USA and other countries.
Honeycomb dehumidifying rotating wheel takes ceramic fiber or
fiberglass as basic materials, then makes use of special chemical
for synthesis to make hygroscopic agent silica gel and molecular
sieve grow evenly on basic materials so that it has extreme strong
absorptive capacity.
Rotating wheels of this structure do not produce powder when
running, and the service life of it will be greatly prolonged.
Humid air through incalculable micropores (hygroscopic agent)
within the honeycomb dehumidifying rotating wheel will be
effectively absorbed, and the air via dehumidifying rotating wheel
filter will become the air of ultra-low dew point after being
completely dehumidified.
Regeneration is carried out under the same principle, which is only
through the opposite direction of honeycomb dehumidifying rotating
wheel.
Lianzhong company, aiming at the dehumidification requirements of
lithium-ion industry, introduces the low dew point products of the
following series to meet the requirements of different users in
lithium-ion battery industry.
DRDS Series
The low dew point dehumidifiers of DRDS Series of our company are
specially equipped for the polymer lithium-ion battery glove box.
According to the characteristics of small volume and dispersion of
glove box when manufacturing polymer lithium-ion battery liquid
injection, our company introduces the low dew point dehumidifiers
of DRDS Series. The bottom of machine set has equipped with caster.
The equipment is ingenious, environmental protection and energy
saving with flexible movement.
The core components of machine set use the original imported
dehumidifying rotating wheel. The honeycomb rotating wheel is
divided into three regions (dehumidification, cooling and
regeneration) and by using gear motors to control the speed of
rotating wheel so that one region of the dryer of DRDS Series is
for dehumidification and another for regeneration.
Besides, dry air of the dehumidification side is used to cool
rotating wheel and as regenerative wind to achieve the dry air of
the ultra-low dew point. Because three regions are simultaneously
acted, the dry air is available for use to completely solve the
major drawbacks, for example, other dew points of dehumidifier
fluctuating and high consumption.
Dehumidifiers of DRDS Series are fully operated automatically. Any
mechanical or electrical failure will cause the double warnings of
warning lights and sirens immediately, and the mechanical equipment
will stop running automatically so that operators can discharge the
failures in emergency and resume regular run to ensure that the dew
point of dry air at the exit of honeycomb rotating wheel
dehumidifier reaches below -40℃.
DRDH Series
For the production of aluminum-shell lithium-ion batteries, many
processes are required to be completed in drying shed with large
space. Our company especially tailors the low dew point machine set
of DRHD Series for lithium-ion batteries of this kind. By the
combination of frozen dehumidification and rotating wheel
dehumidification and of the main dehumidifier and auxiliary
dehumidifier, operating condition of air in dry shed will reach the
dew point of -80°C without load and -60°C with load.
High quality program can ensure the stability of operating
condition of air to fully meet the requirements of lithium-ion
battery industry,
Case 1: Single rotating wheel supercooling area
For the dry shed requiring the dew point below -35°C, our company
generally chooses
