BESS1500 Cell Monitoring Unit (CMU) with 3x 18S Capability

RDBESS774A3EVB Active

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The CMU3 - RDBESS774A3EVB is a battery cell monitoring unit (CMU) reference design with electrical transport protocol link (ETPL) communication interface towards a BMU. It is ideal for rapid prototyping of a high-voltage battery energy storage system (BESS) hardware and software. This board contains three MC33774A analog front ends (AFEs) in a daisy chain.

It can be used to monitor a battery module with up to 54 cells.

There are in total 27 GPIO/Analog measurement inputs for temperature or other measurements.

This board is part of the RD-BESS1500BUN reference design bundle.

Block Diagram

CMU3 - RDBESS774A3EVB

RDBESS774A3EVB Block Diagram
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Supported Devices

Power Management

Battery Cell Controllers

  • MC33774: 18 Channel Li-Ion Battery Cell Controller IC ASIL D

AC-DC Controllers with Integrated Power Switch

  • TEA1721AT: HV Start-Up Flyback Controller with Integrated MOSFET for 5 W Applications, F~burst = 430 Hz

Sensors

LPG and CNG Gas 20 to 550 kPa

  • FXPS7xx0A4: Analog Absolute Pressure Sensor (20 to 550 kPa)

Features

Voltage Measurement

  • 3 x 18 channel BCCs for up to 54 cells, extendable by adding more CMUs to the daisy chain
  • Life-time guaranteed high accuracy cell voltage measurement channels, with averaging and advanced filtering

Temperature Measurement

  • 3 x 9 analog inputs (including temperature sensors) or GPIOs with advanced filtering

Cell Balancing

  • Cell balancing with integrated temperature-controller function with up to 300mA (using default setup)

Pressure Sensing

  • On-board pressure sensor for thermal runaway detection

Communication

  • Isolated ETPL communication between CMU and BMU

Buy Options

RDBESS774A3EVB-Image

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  • RDBESS774A3EVB

  • 1500 V Battery Energy Storage Reference Design.

  • Kit contains:

    • One assembled and tested evaluation board/module in antistatic bag
    • Three cell terminal cables
    • One transformer physical layer (TPL) cable
  • $494.10 USD
  • For a quantity of 1
    • Availability: In Stock
    • Inventory: 20
    • Shipping: Normally ships 1-2 business days
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