A lab-scale dryroom (or "micro-dryroom") is a modular, high-performance environment designed to bridge the gap between a glovebox and a full-scale industrial facility.
A lab-scale dryroom must achieve "Battery-Grade" dry air while being compact enough to fit into an existing research facility. (1) Dew Point (Td): The target is typically -40 to -55°C (<1% RH}). (2) Air Changes per Hour (ACH): Unlike a standard lab (6–10 ACH), a battery dryroom often requires 50+ ACH to maintain pressure and scrub moisture introduced by personnel or equipment.Filtration: Integrated HEPA filtration ensures ISO Class 6 or 7 cleanliness, preventing dust from causing micro-shorts in your pouch cells.
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| Critical Targets |
- Dryroom Space: L3-6m*W3m*H2.2m (larger or smaller space can be customized according to equipment occupancy)
- Dew point: -40°C (other dew points can be achieved by choosing appropriate dehumidifier and water chiller).
- Two Operators (more operators can be accommodated upon request for customization)
- The dryroom hosting space should have air condition system to maintain the environmental temperature (~22°C) and humidity.
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| Dehumidifier Features |
- AC380V±10%, three-phases, 50/60Hz, ~15 kW (for 3m*3m) or 28 kW for (3m*6m)
- A 25A or 50A air breaker should be installed
- Supply Air Volume: 2000-4000 m3/h (depends on the room size and operator numbers)
- Fresh Air Volume: 500-1000 m3/h
- Exhaust Air Volume: 500-1000 m3/h
- Regeneration Temperature: Max. 150 °C (normally 120-130 °C is recommended).
- Three graded particle filtration system
(1) Coarse filter: ≥ 5.0 um particles (eg: dust, hair);
(2) Fine filter: 1-5 um particles;
(3) Ultra-fine filter: ≥0.3 um particles.
- HMI touch screen to monitor and control all operation parameters.
- Dimension: L2500mm * W1100mm * H2000mm (for 3m*6m, 4000 m3/h)
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| Water Chiller Features |
- AC220V±10%, three-phases, 50/60Hz, 8 kW (3m*3m), or 14 kW (3m*6m)
- Air cooled type, R32 refrigerating medium
- Scroll Compressor: 2* 5.6 kW, cooling capacity: 45 kW.
- Condenser: High-efficiency fin type,
- Water Pump Power: 0.8 kW, 360 L/min
- Inlet and outlet water temperature: 12°C and 7°C, respectively.
- Tank Volume: ~18 L
- Dimension: L1590mm * W800mm * H1650mm
- The water chiller is shown below for reference.
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| Dryroom Box Features |
- Inner Dimension: L3-6m*W3m*H2.2m
- Box Frame: Aluminum alloy frame with acrylic plates
- Buffer Room: it is designed for "buffering" the humidity from operator and outside when opening the door.
- Two LED light panels are included.
- The dry air distribution plates are presented.
- The electrical box with AC110V/AC220V input, as well as tubing ports (for gas/cable/eye wash water) are available.
- A dew point display is installed inside dryroom.
 
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References:
- S. Ahmed, et al., Study of a dry room in a battery manufacturing plant using a process model, Journal of Power Sources, 2016 ,326, 490-497.
- E. Zeferino, et al., Assessing the impact of mini environments in lithium-ion battery production under uncertainties, Procedia CIRP, 2025, 134, 1053-1058.
