BMS Master Firmware Project Description

Responsible Engineers

Xinglu Wang & Felix Sam

High Level Project Objective

To use the TMS570LS1224 to communicate with and control the BQ76PL455A-Q1

Purpose of Project

The BMS is the heart of an electric vehicle, and is critical to the safety of the driver when using a lithium ion battery pack.

Deliverables

Fall 2018

• High level system block diagram of BMS master, thermistor expansion board, all AFEs, battery pack, shutdown circuit, AIRs, charger, charging shutdown circuit
• Understanding how to use the TMS570LS1224 UART protocol
• Understanding how to use the TMS570LS1224 CAN protocol
• Understanding how to use the BQ76PL455A-Q1 UART protocol
• Establishing the UART interface between the TMS570LS1224 and the BQ76PL455EVM
• Reading and logging the voltage of 1 cell
• Reading and logging the temperature of a standard room
• Sending any message to CAN

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Spring 2019

• Adapting the UART interface to work with the Analog Front End
• Reading and logging the voltage of 6 cells
• Sending OV, UV, and OT fault signals up to CAN
• Receiving a FAULT signal from the BQ76PL455A-Q1
• Passive cell balancing with 6 cells during charging
• Passive cell balancing with 6 cells during running