IBC Isothermal Battery Calorimeters A range of systems to quantify heat release and battery performance
Instruments for :Coin Cell 18650 26650 21700 Prismatics Modules Complete devices
IBC / Isothermal Battery Calorimeters
Introduction Isothermal Battery Calorimeter IBC Heat occurring during the charging and discharging of batteries is largely due to their internal impedance. Characterisation of this heat at different operating temperatures is vital for efficient thermal management of cells in packs or modules. IBC can be used to study battery stability, performance, efficiency and life cycle. The IBC Isothermal Battery Calorimeter is available in several variants to accommodate different battery sizes: Coin cell, 18650, 26650, 21700 and prismatic.. With connection to an external cycler the instruments provide accurate and easy testing of heat output from charging and discharging a single battery. Heat capacity determination is also possible. Measure heat release with
• Chemistry modification • Size and shape • Environmental temperature
• Applied load • State of charge • Age
Isothermal Air Calorimeter IBC-AIR The Isothermal Air Calorimeter utilises power compensation for measurement of heat flux from electronic devices, lithium ion cells and modules. It’s large chamber measures 450 x 400 x 300mm is suitable for a wide variety of electronic components and devices.
IBC : Cylindrical Current
Voltage
1200
4.5
500
4
-200
3.5
-900
3
-1600 0
8000
16000
24000
Voltage (V)
Heat Rate / Current (mW/mA)
Heat Rate
• Single chamber up to 26650 • Inserts for 21700 and 18650 • Temperature range: -5°C to 60°C • Dynamic range: 200µW to 10W • Suitable for heat capacity measurement, cycling and isothermal tests.
2.5 32000
Elapsed Time (s)
Chamber size 26650 with inserts for 18650 & 21700
1.5 Ah Lithium Battery Charge and Discharge Cycle 1A
Heat Rate
Current
Voltage
8
3.2
4
2.8
0
2.4
-4
2
-8 0
12500
25000
37500
1.6 50000
Elapsed Time (s) Chamber size up to 2032
Cycling data from ML2032, rechargeable coin cell, 65mAh capacity
• Sample and Reference chambers up to 2032
Voltage (V)
Heat Rate / Current (mW/mA)
IBC-CC : Coin Cell
• Temperature range: -5°C to 60°C • Dynamic range: up to 500mW • Suitable for heat capacity measurement, cycling and isothermal tests.
IBC / Isothermal Battery Calorimeters
IBC-PL : Large Prismatic 2000
13500
0 Heat Battery Current
9000 4500
-2000 -4000
0 0
1000
2000
3000
Current (mA)
Heat (mW)
18000
-6000 4000
Time (sec)
300 x 300 x 40mm
Heat generated along with current data during three minute discharges on a prismatic battery at 20°C. 5.0
13500
3.8 Heat
9000
Battery Voltage
4500 0 0
• Temperature range: -30°C to 60°C • Dynamic range: 200mW to 100W • Suitable for heat capacity
2.5 1.3
1000
2000
3000
Voltage (V)
Heat (mW)
18000
• Accommodate battery sizes up to
measurement, cycling and isothermal tests.
0.0 4000
Time (sec)
Heat generated along with voltage data during three minute discharges on a prismatic battery at 20°C.
5 4 3 2 1 0 -1 -2 -3 -4 -5
30 25 20 15 10 5 0 -5 -10 -15 -20
0
100
200
Time (min) Heat
Voltage
Current
IBC-Air Mini: 10Ah LiPO 10A cycle. Charge Heat = 2700 J Discharge Heat = 5227 J
IBC-Air
Current (A)
Heat (W), Voltage (V)
IBC-Air • Chamber size 450 x 400 x 300mm • Temperature range: -20°C to 60°C • Dynamic range: 500mW to 100W • Suitable for cycling, usage and isothermal tests.
IBC / Specification
Specification
Calorimeter Type
IBC Cylindrical
IBC-CC Coin Cell
IBC-PL IBC-Air Prismatic Large Electronic components
Max Temperature (°C)
60
60
60
60
Min Temperature (°C)
-5
-5
-30
-20
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
1 sample 1 reference
1
1
RMS Noise (Ambient conditions)
200 µW
10 µW
200 mW
500 mW
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
No
No
No
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 10kg
56 lbs 25 kg
48 lbs 22 kg
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