| Performance |
| Cooling method | Air-cooled |
| Temperature range | -40℃~+70℃ |
| Temperature fluctuation | ≤ 0.5℃ (ambient pressure, no load) |
| Temperature deviation | ≤±2.0℃(ambient pressure, no load) |
| Heating time | 20℃ → +100℃, ≤ 30 min (ambient pressure) |
| Cooling time | 20℃ → -40℃, ≤ 30 min (ambient pressure) |
| Pressure range | Ambient pressure ~ 5 kPa (commonly 11.6 kPa) |
| Pressure deviation | ≤ ±2 kPa (≥ 40 kPa) ≤ ±5% (2–40 kPa) |
| Pressure fluctuation | ≤ ±2 kPa (1 bar ~ 40 kPa); ≤ ±5% (40 kPa ~ 2 kPa) |
| Depressurization time | ≤ 30 minutes to 5 kPa |
| Program Requirements | The test batteries and battery packs shall be stored at a temperature of 75 ± 2°C for at least 6 hours, followed by storage at a temperature of -40 ± 2°C for at least 6 hours. The maximum time interval between the two extreme test temperatures shall be 30 minutes. This cycle shall be repeated 10 times. Afterward, all test batteries and battery packs shall be stored at ambient temperature (20 ± 5°C) for 24 hours. For large batteries and battery packs, the exposure time at the extreme test temperatures shall be at least 12 hours. |
| Structural Features |
| Sample specifications | Selectable voltage: 12 V, 24 V, 36 V, or 48 V Maximum battery size: W720*H480*D600 mm Weight: 280 kg Max voltage: 56 V Max current: 300 A |
| Inner chamber dimensions | W*H*D: 1000*1000*1000 mm |
| Outer dimensions | W*H*D: 3250*1400*2000 mm (excluding protrusions) |
| Outer wall material | 1.5 mm painted iron sheet |
| Inner wall material | SUS304 stainless steel (5 mm, pressure-bearing structure) |
| Insulation material | Rigid polyurethane foam |
| Chamber door | Single door with explosion-proof handle, viewing window, internal lighting |
| Lead-through & terminal posts | One Φ100 mm lead-through on left side; sealed terminal flange |
| Manual inflation valve | For manual pressure equalization during power failure |
| Shelves | Two stainless steel shelves |
| Chamber heater | Stainless steel finned tube heater |
| Heater control | SSR (solid state relay) pulse-width modulation |
| Vacuum pump | VD401 ULVAC direct-drive, air-cooled, single-stage rotary vane vacuum pump (with oil mist filter, oil sight glass, and gas ballast valve) |
| Vacuum sensor | UNIK 5072 (GE, USA), Range: 0–200 kPa, Accuracy: ±0.2% FS.BSL, Output: 4–20 mA, Pressure interface: G1/4 internal thread |
