BATTERY TEST CHAMBERS
ATT provides a range of standard chambers for battery tests in different sizes of housing from the small LV start battery up to an electric vehicle multicell traction battery.
Temperature and humidity are precisely controlled in a wide range of conditions.
Accessories
As well as climatic simulation the battery chamber features a kit of accessories that makes the testing procedure easier and safer. (gas, flame and smoke detection, fire extinguisher and over pressure valve)
The proposed devices have been optimized in accordance with the EUCAR hazard levels in order to create a standard for safety analysis (table 1):
| Hazard Level | Description | Criteria for Serverity Classifications & Effects |
| 0 | No effect | No effect, no loss of functionality |
| 1 | Reversible loss of function | No defect, no leakage, no venting, fire or flame, no rupture, no explosion No exothermic reaction or thermal runaway Temporary loss of battery functionally Resetting of protective device needed |
| 2 | Irreversible defect / damage | No leakage, no venting, fire or flame, no rupture, no explosion No exothermic reaction or thermal runaway RESS irrepressibly damage Repair needed |
| 3 | Leakage mass <50% | No venting, fire or flame, no rupture, no explosion Weight loss< 50% of electrolyte weight Light smoke (electrolyte = solvent +salt) |
| 4 | Leakage mass >50% | No fire or flame, no rupture, no explosion Weight loss > 50% of electrolyte weight Heavy smoke (electrolyte= solvent +salt) |
| 5 | Fire or flame | |
| 6 | Rupture | No rupture, no explosion (i.e. no flying parts) |
| 7 | Explosion | Explosion (i.e. disintegration of the RESS with externally damaging thermal & kinetic forces) Exposure to toxic substances in excess of OSHA limits |
Our list of accessories has been optimized in accordance with the hazard levels defined by the EUCAR, with each hazard level associated with a series of accessories.
| Hazard Level | Description |
| 0 - 2 | Optical/acoustic alarm and 4 supplementary PT100 sensors The luminous cylinder has 3 signal levels (white, green and red) and serves to attract the operator's attention in the event of anomalous functioning of the equipment. The 4 supplementary sensors may be used to monitor the temperature of the specimen in the chamber. |
| 3 - 4 | Flushing system with GN2 or compressed air In the case of connection to nitrogen gas system, the system makes it possible to create inert conditions in the test chamber and in this case it may be coupled with oxygen sensor to increase the degree of reliability of the device. If the system is connected to a compressed air inlet, the device serves to guarantee a washing and constant changing of the air inside the test chamber. Oxygen sensor, H2 sensor, CO sensor Monitoring of the above said gases in the chamber in all functioning conditions envisage in the technical specification. Over pressure valve The system is positioned in the upper part and has been conceived to protect the chamber from any gradual releases of gas by the specimen. The system is not designed to compensate for internal over pressures of an explosive nature. The device must be appropriately connected to the outside in order to avoid contamination of the test area. |
| 5 - 6 | CO2 fire extinguishing system The system is equipped with a fire extinguished control unit, a smoke sensor for the analysis of the test volume and a system with CO2 cylinder for automatically extinguishing any fire in the chamber. The whole system is supplied from the outside. |
