SLUUC37C july   2019  – august 2023 BQ75614-Q1 , BQ79616 , BQ79616-Q1 , BQ79656-Q1

 

  1.   1
  2.   BQ79616-Q1 and BQ75614-Q1 Evaluation Modules
  3.   Trademarks
  4.   General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
  5. 1 General Description
    1. 1.1 Key Features
    2. 1.2 Key Electrical Parameters
  6. 2 Theory of Operation - Stackable BQ79616EVM
    1. 2.1 Single Board
    2. 2.2 Stacked Systems
    3. 2.3 Configuring the BQ79616-Q1 EVM to be used for Lower Cell Count Applications
  7. 3 Theory of Operation - Standalone BQ75614EVM
  8. 4 Connectors
    1. 4.1 Primary Input and Output Connectors
      1. 4.1.1 Jumper Placements
      2. 4.1.2 Battery Connector
      3. 4.1.3 Host Interface
      4. 4.1.4 GPIO or Thermistor Inputs
      5. 4.1.5 High-Side and Low-Side Communications
  9. 5 Quick Start Guide
    1. 5.1 Required Devices for using the Example Code
    2. 5.2 Power Connections
      1. 5.2.1 On-Board Resistor Ladder - Power Supply
      2. 5.2.2 Using Actual Battery Cells
    3. 5.3 Connecting the EVM to TMS570 LaunchPad
    4. 5.4 Stacking BQ79616EVMs
    5. 5.5 Software
    6. 5.6 GUI
      1. 5.6.1 GUI UART Connection
  10. 6 Physical Dimensions
    1. 6.1 Board Dimensions
    2. 6.2 Board Mounting
  11. 7 BQ79616EVM Schematic, Assembly, Layout, and BOM
    1. 7.1 Schematic
    2. 7.2 Assembly
    3. 7.3 Layout
    4. 7.4 BQ79616EVM-021 Bill of Materials (BOM)
  12. 8 BQ75614EVM Schematic, Assembly, Layout, and BOM
    1. 8.1 Schematic
    2. 8.2 Assembly
    3. 8.3 Layout
    4. 8.4 BQ75614EVM Bill of Materials (BOM)
  13. 9 BQ79656EVM Schematic, Assembly, Layout, and BOM
    1. 9.1 Schematic
    2. 9.2 Assembly
    3. 9.3 Layout
    4. 9.4 BQ79656EVM Bill of Materials (BOM)
  14. 10Revision History

1 General Description

TI's BMS021 Battery Management System (BMS) is an evaluation board for the BQ7961X-Q1 family of devices for use in large format lithium-ion battery pack applications to provide monitoring, protecting, balancing, and communications. There are two variants of the evaluation board, the BQ79616EVM and the BQ75614EVM.

Each BQ79616EVM can manage up to 16 cells (80-V max) for Li-ion battery applications. Up to 35 BQ79616EVM modules can be stacked for packs up to 560 series cells.

Each BQ75614EVM can manage 14 or 16 cells (80-V max) for Li-ion battery applications. The standalone BQ75614EVM module includes integrated current sense.

Each system provides fast cell balancing, diagnostics, and module to controller communication. Independent protection circuitry is also provided. Please see the BQ79616-Q1 or BQ75614-Q1 data sheet for more details on each respective part.

Each EVM is equipped with precision measurement and synchronous communication to enable a controller to perform State of Charge (SOC) and State of Health (SOH) estimation. Highly-accurate cell voltages and a fast sampling time for the entire battery pack allows more efficient operation of battery modules and more accurate SOC and SOH calculations. Communication with stacked BQ79616EVMs is via an isolated daisy-chain differential bus. For the standalone BQ75614EVM, SOC and SOH are further assisted by an integrated current sense ADC.

Control a single EVM or multiple stacked EVMs using a PC-hosted GUI. Communication between the PC and the base device in a stack of BQ79616EVM (or a single standalone BQ75614EVM device) is via a USB2ANY UART interface. For a stack of BQ79616EVM devices, communication between all other EVMs in the stack occurs via the isolated, daisy-chain differential communication bus. The PC GUI allows configuration of the EVMs to monitor cells and other analog data channels, control balancing, and monitor details of any faults.