EV-Accelerating rate Calorimeter

EV-Accelerating rate Calorimeter

To implement all of the tests with larger batteries, which can be carried out with small batteries using the esARC, THT developed the original EV-ARC in 1999.

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Product Description

The EV calorimeter is necessary for larger batteries, modules and small packs, power tools, satellite, military and associated applications. The EV calorimeter is used when variation of heat release over surface area (MultiPoint measurement) is to measured and associated thermal management applications. The EV calorimeter is rugged and is sited in a secure Containment Vessel.

Within the containment vessel the standard ARC calorimeter (as in ES-ARC) can be used and this is regularly supplied for “Double Systems”. Such a system gives versatility capable of measuring:- small prismatic, coin cell, 18650 and other larger batteries used in power applications.

With the EV system all safety tests can be carried out as well as Battery Performance studies.

The BPC Battery Performance Calorimeter is an even larger calorimeter where thermal management is to be studied – it is not suitable for safety tests, but is used for multipoint and power discharge application and experimentation over environmental temperatures. It is restricted to 200°C.

Specifications

Design

  • EV STANDARD CALORIMETER
  • 25cm diameter; 50cm depth
  • 8 Heaters
  • 6 thermocouples (Three Zones, Bomb, Safety and Auxiliary)
  • BPC BATTERY PERFORMANCE CALORIMETER
  • 60cm, 50cm depth

Temperature

  • -50°C – 400°C EV temperature range
  • -407°C – 200°C BPC temperature range

Sensitivity

  • 0.02°C/min detection
  • Temperature resolution 0.001°C
  • Precision <0.2%, Accuracy 0.7%

Pressure

  • Pressure range 0 – 200 bar (or specify range to 1000 bar with alternative transducers)
  • Resolution 0.005 bar, precision 0.02%, accuracy 0.05%.

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