Gamry LPI1010 Interface
Gamry LPI1010 Interface
Interface for high-voltage EIS testing up to 1000 volts for the EIS characterisation of batteries and fuel cells – available in three versions (10 V, 100 V and 1000 V)Alternatives to fossil fuels are becoming increasingly widespread, and fuel cells and batteries play a key role in the energy storage and conversion of these alternatives. However, their future success depends on continuous improvements in efficiency and performance, which can now be achieved much more effectively with Gamry’s LPI1010 interface.
Product Description
The electrification of vehicles requires changes to the way batteries and fuel cells have been tested to date. Electrochemical impedance spectroscopy (EIS) is an almost universal technique for testing batteries and fuel cells, which helps to understand the function or dysfunction or, in other words, early loss processes. Until now, it has not been possible to perform EIS on large battery or fuel cell modules such as those used in vehicles. Normal potentiostats do not have the voltage and current ranges required to test these high energy devices. Gamry solves this problem with its new high voltage EIS test system. The LPI1010 gives you the ability to perform EIS on these large devices under test up to 1000V, extending the range for voltage and current compared to standard EIS systems designed for the lab.
A typical system for EIS characterisation of large battery or fuel cell modules consists of Gamry’s basic Interface 1010E potentiostat/galvanostat/ZRA and LPI1010 accessories with the appropriate maximum voltage range (10V, 100V or 1000V) of your DUTs in conjunction with a suitable bipolar power supply or electronic load.
The sinusoidal excitation signal for electrochemical impedance spectroscopy is fed by the LPI1010 into the bipolar power supply unit or the electronic load as the executing organ and the battery current is modulated depending on the frequency. In a fuel cell that continuously produces direct current, a DC balance is established with the electronic load by means of a corresponding sink current and the sinusoidal alternating current excitation signal for electrochemical impedance spectroscopy (EIS) is superimposed at the same time. This means that both the DC sink current and the AC characterisation current come from a common source and the measured voltage response and stable phase angle information between the excitation current and the voltage response of the fuel cell provide unaffected feedback on the real and imaginary parts of the impedance, which no longer interfere with each other due to control loops from two different devices. In this way, the use of the LPI1010 in the example of fuel cells eliminates the problem of parallel EIS characterisation and the associated problem of “counter-regulation” and also measures only the frequency-dependent impedance and phase angle of the fuel cell and no longer the sum of the frequency-dependent impedance and phase angle of the fuel cell AND load.
Fundamental studies with new approaches for the targeted optimisation of battery and fuel cell modules thus benefit from new EIS tests and modelling of physical reality.
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LPI1010 - High Voltage Test System for EISSpecifications
DIMENSIONS (cm) 24 (W) x 6 (H) x 39 (D)SYSTEM
Working electrode potential (max.): ±10 V, ±100 V; ±1000 V
Maximum current: Specification of the bipolar power supply / electronic load
Number of current measurement ranges: Specification of the bipolar power supply / electronic load
Frequency range for EIS measurements: 10 µHz – 100 kHz (LPI1010 only; max. EIS frequency depends on the bandwidth of the bipolar power supply / electronic load)
Temperature measurement: Pt1000 input
Signal output to bipolar power supply / electronic load: 10 V max., BNC (1 V, BNC for LPI1010 100 V LF)
Signal input from bipolar power supply / electronic load: 10V max., BNC (1V, BNC for LPI1010 100V NF)
Cable length
: 1 m
Measurement
methods: Galvanostatic
EIS and Hybrid EIS
EARTHING
Floating ground / earthing via the housing optionally possible
Options and Accessories
Hardware:
• Gamry Interface 1010E Potentiostat/Galvanostat/ZRA
• Load Power Supply Interface (LPI) 10V Accessory Kit
• Load Power Supply Interface (LPI) 100V Accessory Kit
• Load Power Supply Interface (LPI) 100V NF Accessory Kit
• 100V/10A Bipolar NF Power Supply
• Load Power Supply Interface (LPI) 1000V Accessory Kit
• Upgrade of older IFC1010E (plus shipping)
• LPI1010 High Voltage EIS Test Stand Interface 10V
• LPI1010 High Voltage EIS Test Stand Interface 100V
• LPI1010 High Voltage EIS Test Stand Interface 100V NF
• LPI1010 High Voltage EIS Test Stand Interface 1000V
