Cell Voltage Monitor CVM32A

Product catalog summary

Overview: The CVM32A is a 32-channel cell voltage monitor designed for hydrogen fuel-cell stacks. It is intended for research and application purposes, providing a cost-effective solution for monitoring and ensuring optimal working conditions of fuel-cell stacks.

Features:

Supports 32 channels per board with a basic channel voltage range of ±1.5 V and a maximum voltage span of 34 V.
Multiple boards can be chained for stacks greater than 32 cells, with easy adjacent cell chaining.
Resolution of 1 mV with a 12-bit ADC and a sample rate of 100 samples per second (sps).
Compatible with other Kolibrik.net modules and supports communication via XC2/RS485 bus.
Customizable options include opto-isolated inputs/outputs, additional UART, different voltage ranges, and higher sample rates up to 1 ksps.
Accessories available include power supply modules, USB & serial interfaces, and Raspberry PI connections.

Technical Parameters:

Power supply options include 5 V DC from XC2 bus or 8-30 V DC with a power supply module.
Dimensions are 85 x 58 x 13.5 mm, with mounting options using 4x 2.7 mm holes and hex spacers.
Channel count is user-configurable between 18 and 32 channels.
Input impedance is greater than 100 MΩ, with isolation of less than 500 V between channels and the XC2 bus.
Measurement accuracy is 0.1% of range plus 0.1% of reading at 25°C.
Isolated I/O includes input voltage range of 0-30 V and nominal output voltage of 24 V with a max output current of 3 mA.

Connection and Configuration:

Connection via XC2 bus for power and RS485 communication.
Full 32-channel cell connection and example configurations for larger setups, such as a 75-channel connection using three CVM devices.

Catalog excerpts

Cell Voltage MonitorCVM32A32-channel cell voltage monitor Datasheet Document version 1.3 for H2 fuel-cell stacks 2020-08-25 Stackable CVM system designed for H2fuel-cell stack research and applications. CVM system can be used to prevent damage to individual cells, to monitor lifetime conditions, and to ensure optimal working conditions in applications. CVM32A module is designed as a cost-effective solution mainly for applications. For research, automotive, testing and precision application see CVM24P or TEVOMET. Features ❖ 32 channel per board ❖ Basic channel voltage range ±1.5 V ❖ Maximum voltage span of all channels is 34 V ❖ Multiple boards can be chained for > 32 cell stack, connector for easy adjacent cell chaining ❖ Resolution 1 mV (12-bit) ❖ Input impedance > 100 MQ ❖ Sample rate 100 sps ❖ Cell connection via 34-pin IDC connector ❖ Compatible with all other Kolibrik.net modules (KMS, DIN-rail I/O modules, Tevomet, ...), communication bus XC2/RS485 ❖ IO (1x digital output, 1x digital input) ❖ Available customizations: up to 3x opto-isolated inputs or outputs; additional opto-isolated UART; different channel voltage range; customized communication protocol; higher sample rate up to 1 ksps ❖ Available accessories: power supply module for 12/24V DC; USB & serial (RS232) interface; Raspberry PI connection ❖ Application examples: H2 fuel-cell tests stands, H2 fuel-cell application monitoring, Control systems Kolibrik.net, s.r.o. Zdar nad Sazavou www.kolibrik.net - 1 - Czech Republic

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Cell Voltage MonitorCVM32A32-channel cell voltage monitor Datasheet Document version 1.3 for H2 fuel-cell stacks 2020-08-25 Kolibrik.net, s.r.o. Zdar nad Sazavou www.kolibrik.net - 2 - Czech Republic

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Cell Voltage MonitorCVM32A32-channel cell voltage monitor Datasheet Document version 1.3 for H2 fuel-cell stacks 2020-08-25 Kolibrik.net, s.r.o. Zdar nad Sazavou www.kolibrik.net - 3 - Czech Republic

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Cell Voltage Monitor CVM32A Datasheet Document version 1.3 2020-08-25 32-channel cell voltage monitor for H2 fuel-cell stacks Full 32-channel cell connection Example of 75-channel cell connection with 3 CVM devices (3x25 cell) Kolibrik.net, s.r.o. www.kolibrik.net [email protected] Žďár nad Sázavou Czech Republic ©20

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