« Isothermal battery calorimeter IBC
Heat generated during battery charge/discharge primarily originates from internal resistance. Characterizing this heat generation under various operating conditions is essential for efficient thermal management of battery packs and modules. The IBC can be used with an external circulator to study battery stability, performance, efficiency and service life, and also enables heat capacity measurement. The standard system accommodates pouch and prismatic cells, with adapters available for cylindrical cells.
Working principle >>
The IBC is a power-compensation calorimeter. It consists of isothermal sensor blocks that contact the battery and cover all or nearly all of its surface. Each block has two layers — a base layer and a measuring layer — kept at constant temperature by feedback control through an electric heater and thermocouple elements. The heater power of the measuring layer, which contacts the battery surface, is recorded; variations in this power reflect the heat generated or absorbed by the battery. The isothermal base layer ensures that the sensor blocks remain under constant heat-loss conditions.
Measurement characteristics
Battery
» Stability
» Efficiency
» Performance
» Service life
» Quantitative heat release situation
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Exothermic change
» Chemical composition change
» Applying load, charging status
» Size and shape
» Environmental temperature
» Service life
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| Calorimeter Type |
IBC Cylindrical |
IBC-CC Coin Cell |
IBC-PL Prismatic Large |
IBC-Air Electronic components |
| Max Temperature (°C) |
60 |
60 |
60 |
60 |
| Min Temperature (°C) |
-5 |
-5 |
-10 |
-30 |
| Temperature Stability (°C) |
0.01 |
0.01 |
0.05 |
0.05 |
| Refrigerated recirculator required |
No |
No |
Yes |
Yes |
| Calorimeter chamber diameter |
26 mm |
25 mm |
300 x 300 mm |
450 x 400 mm |
| Calorimeter chamber depth |
70 mm |
5 mm |
40 mm |
300 mm |
| Number of sample chambers |
1 sample 1 reference |
1 sample 1 reference |
1 |
1 |
| RMS Noise (Ambient conditions) |
200 µW |
10 µW |
200 µW |
500 µW |
| Max heat detection |
10 W |
500 mW |
100 W |
100 W |
| Internal wiring (force) |
8 ga (3.3 mm) |
16 ga (1.3 mm) |
N/A |
N/A |
| Internal wiring (sense) |
20 ga (0.8 mm) |
20 ga (0.8 mm) |
N/A |
N/A |
| Heat capacity measurement capability |
Yes |
Yes |
Yes |
No |
| Heat cut out |
Yes |
Yes |
Yes |
Yes |
| N2 Purge |
Yes |
Yes |
Yes |
Yes |
| External cycler terminals |
Yes |
Yes |
No |
No |
| Footprint (Width x Height x Depth) |
10 x 12 x 16 Inch
25 x 30 x 41 cm |
10 x 12 x 16 Inch
25 x 30 x 41 cm |
18 x 24 x 14 Inch
46 x 61 x 36 cm |
30 x 26 x 24 Inch
76 x 66 x 61 cm |
| Weight |
22 lbs
10 kg |
22 lbs
10 kg |
56 lbs
25 kg |
48 lbs
22 kg |
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IBC >
1.5 AH Lithium Battery Charge and Discharge Cycle 1A
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IBC-CC >
Cycling data from ML 2032,rechargeable coin cell, 65mAh capacity
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IBC-PL-prismatic battery >
Heat generated along with current data during three minute discharges on a prismatic battery at 20°C.
Heat generated along with voltage data during three minute discharges on a prismatic battery at 20°C.
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IBC-AIR >
Baseline signal over 25min at 25°C.
Calibration Steps of 10W, 20W, and 40W (insert) Calibration linearity (main plot)
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· Windows®-based (7, 8, 10)
· Light-weight, low processor overhead (works on a basic laptop)
· Simple to connect (single USB connection), set up and run the test
· Produces ASCII format data for use in Excel/Origin
· Built in analysis function for heat capacity tests
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