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A large volume calorimeter developed for research studies of larger (EV) cells and modules. |
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The BPC is designed to quantify heat changes during charge and discharge – at conditions that simulate use of the battery.
The BPC is not appropriate for stability, safety and abuse studies where battery disintegration is possible. The BPC has an upper temperature limit of 200°C but operates down to -30°C. Cryogenic operation is possible by linking to a refrigerated circulating bath.
A key and unique feature of the BPC is the ‘Thermal Diode’ heating system that allows current flow through the calorimeter. This eliminates need for conductive leads or cables to carry current. At high power operation such loads do come major heat loss and data error in calorimeters with no ‘thermal guard’. (The EV+ uniquely does have thermally guarded leads and these do minimise error)
The calorimeter has a depth of 50cm but its cross section is oval (50-65cm) maximising useful volume for large batteries.
With heat detection sensitivity at 0.005°C/min the BPC has stable specific detection for heat release. In conjunction with the THT surface area (multipoint) heat measurement option, the BPC at well below 1 w/g detection, is ideally suited for gaining information appropriate for Thermal Management.
The BPC used with THT ARC software and electronics can be used within the adiabatic isothermal or isoperibolic modes. The choice of mode relates to the studies undertaken.
Key options used with the BPC are the surface area (multipoint) option and the heat capacity option. The BPC complements the other calorimeters available from THT.
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The BPC Calorimeter
Calorimeter Assembly Temperature range Temperature measurement Temperature sensitivity Temperature accuracy Exotherm detection sensitivity Exotherm tracking rate Pressure measurement 0-50 bar Pressure accuracy * dependent upon external chiller Two stage insulated calorimeter construction Internal cooling coil (connection to chiller) Internal dry gas purge (preventing ice formation) External and internal current & voltage cable connection to 2-stage calorimeter (thermal diode design). Ancillary Ports Unit Electronic Cut Out Installation & training Support Part Supply Manuals
Hardware Features & Performance
-30°C* to +200°C
Type N thermocouple
0.01°C
0.1°C
from 0.005°C/min
to 20°C/min
0.5%
Standard Features
► Allows connection to THT or user supplied Battery cycler or test system
► Offers ability to implement options & functionality such as pressure measuring, inertion, video, heat capacity or surface temperature distribution measurement.Safety Features
► Software & Hardware cut out features will automate cooling.Customer Support
1 week, acceptance test
Guarantee 1 year, phone and email support over lifetime of instrument without charge
10 years guaranteed
Full operations and data analysis
manuals with tutorials
Specification above subject to change
OptionsOptions are available from THT to increase the functionality of the BPC Surface Temperature Distribution (Multipoint Option) |
Heat Capacity Measurement Cp Option
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Sample test
A testing service for larger battery cells is available. Tests include abuse and electro-thermal dynamics.
Abuse type testing will determine heat output when battery is shorted, overcharged or over-discharged.
Testing can also be carried out to determine Cp variation of heat release over surface area (multi-point) and aspects of thermal management.
We offer a full range of tests allowing all information on the safety, efficiency, lifetime of batteries and thermal consequences of their performance to be determined.
Click here to request sample test information
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