HVBMS Cell Monitoring Unit (CMU)

HVBMS-CMU

The cell monitoring unit (CMU) is the cell-sensing part of the BMS. It accurately measures the cell voltages, acquires temperature readings form the battery pack and balances the cells with a current up to 300 mA.

Block Diagram

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HVBMS-CMU - 400 V using ETPL

HVBMS-CMU - 400 V using TPL

HVBMS-CMU - 400 V using CAN

HVBMS-CMU - 400 V using CAN

HVBMS-CMU - 800 V using ETPL

HVBMS-CMU - 800 V using TPL
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Supported Devices

Battery Management

Battery Cell Controllers

  • MC33775: 14 Channel Li-Ion Battery Cell Controller IC ASIL D

Battery Communication ICs

  • MC33665A: General Purpose BMS Communication TPL Transceiver and CAN FD Gateway

Interfaces

CAN with Flexible Data Rate

  • TJA144x: Automotive CAN FD Transceiver Family

Features

Voltage Measurement

  • 4 x 14 channel BCCs for up to 56 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

  • 4 x 8 analog inputs (including temperature sensors) or GPIOs with advanced filtering

Cell Balancing

  • Integrated temperature-controlled cell balancing with up to 300 mA (100 mA using default setup)

Communication

  • Two battery-internal communication options: Isolated electrical protocol link (ETPL) or standard CAN/CAN FD

Buy Options

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HVBMS Centralized Cell Monitoring Unit Using ETPL with MC33775A (CMU).

    $493.35 USD
    In Stock :5

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    RD33775ACNCEVB-Image

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    HVBMS Centralized Cell Monitoring Unit Using CAN FD with MC33775A (CMU).

      $450.00 USD
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      HVBMS Reference Design Bundle Using ETPL.

        $2699.00 USD
        In Stock :10

        Normally ships 1-2 business days

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