The Battery Pack High-Low Temperature Testing Chamber evaluates lithium battery performance under extreme thermal (-40°C to 150°C) and humidity (10-98% RH) conditions. With rapid temperature cycling, real-time monitoring, and compliance with UL/IEC/UN38.3 standards, it ensures reliability for EVs, energy storage, and electronics in harsh environments
Relevant Standard Testing Requirements
Safety Test for Single Batteries: The Temperature Cycle Test shall be carried out in accordance with the following steps:
1.1 Charge the single battery according to the method specified in 6.1.3.
1.2 Place the single battery in a temperature chamber. Adjust the temperature of the temperature chamber according to Table 1 and Figure 2, with the number of cycles being 5 times. Observe for 1 hour.
| Temperature | Time increment | Cumulative time | Rate of temperature change |
| ºC | min | min | ºC/min |
| 25 | 0 | 0 | 0 |
| -40 | 60 | 60 | 12/13 |
| -40 | 90 | 150 | 0 |
| 25 | 60 | 210 | 12/13 |
| 85 | 90 | 300 | 2/3 |
| 85 | 110 | 410 | 0 |
| 25 | 70 | 480 | 6/7 |
Safety Test for Battery Modules: The Temperature Cycle Test shall be carried out in accordance with the following steps:
1.1.1 Charge the battery module according to the method specified in 6.1.4.
1.1.2 Place the battery module in a temperature chamber. Adjust the temperature of the temperature chamber according to Table 1 and Figure 2, with the number of cycles being 5 times. Observe for 1 hour.
Main Parameters
| Model | MHP-1000-CA |
| Inner box size | W1000*H1000*D1000mm |
| Outer box size | W1250* H2180* D1950mm |
| Effective volume | About 1000L |
| Temperature range | -40ºC to +150ºC/20% (limited temperature segment, see regional chart) to 98%RH |
| Condition | It refers to the air-cooled ambient temperature at +25ºC and the water-cooled temperature is +27ºC. No load (some parameters are according to the notes) when there is no sample. |
| Temperature/humidity fluctuation | ≤±0.5ºC / ≤±2.5%RH |
| Temperature/humidity deviation | ≤±2ºC A) >75%RH≤±2%RH B) <75%RH≤±5%RH |
| Temperature uniformity | ±2ºC/±3%RH |
| The heating rate | -40ºC rises to +85ºC, and the average nonlinear heating rate of the whole process is 5ºC/min |
| Cooling rate | +85ºC drops to -40ºC, the average nonlinear cooling rate of the whole process is 5ºC/min |
| Noise | Noise <75 Decibel (The noise detection device is measured 1m away from the equipment gate). Noise reduction scheme: 1. The main noise sources, such as compressors, are equipped with vibration damping springs and vibration damping pads, which can reduce noise and reduce the cause. Vibration pair. The destructive factors of the equipment prolong the service life of the equipment. The freezing pipe is fixed by a card clip, which effectively reduces less vibration. 2. The inner wall of the refrigeration unit is made of high-quality sound-absorbing cotton, which can effectively reduce the noise effect of the refrigeration unit. 3. The compressor is connected to the pipe and the vibration-abering hose is installed. |
| Compressor | 1. Fully enclosed compressor. 2. Frequency conversion technology of compressor + electronic expansion valve refrigerant flow. |
| Refrigerant | Non-fluorine environmental protection HFCR404A/R23 |
| Condenser | Air-cooled high-efficiency forced convection fin type |
| Outer box material | Adopt high-quality fog surface line processing SUS#304 stainless steel plate |
| Inner box material | SUS#304 mirror stainless steel plate, corrosion-resistant, all seams. Continuous welding to ensure long-term trial. There is no leakage after inspection. |
| Controller | High-precision resistive touch screen, availableUniversal serial bus. External mouse control. |
| Power supply voltage | 380V (±10%), three-phase wire + protective ground wire, grounding. Resistance ≤4Ω; use 3P+N 40A air switch. Maximum power: about 15kW. |
| Safe protect | Equipped with an explosion-proof pressure relief port, an explosion-proof chain is installed on the box door, and the observation window is equipped with an explosion-proof partition. Optional smoke alarm, smoke exhaust pipe, video surveillance and fire extinguishing system. |
"Specialized chamber for lithium battery packs, conducting temperature/humidity cycling tests to assess reliability, performance, safety, and lifespan under simulated environmental conditions."
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