Battery Modeling and Algorithm Development with Simulink

Day 1 of 2

Getting Started with a Battery Cell

Objective: Define terms used in a battery component. Construct a charging circuit to simulate the CC-CV charging of the cell.

• Define battery terms (cell capacity, C-rate, open circuit voltage)
• Model battery characteristics using the Battery(table-based) block
• Construct charge and discharge circuit with Simscape™

Cell Characterization

Objective: Analyze the equivalent circuit model of a cell. Perform characterization of a given cell.

• Equivalent circuit model of a Battery block
• Overview of parameter estimation
• Perform cell characterization

Battery Pack Modeling

Objective: Connect characterized cells in series configuration to create battery packs. Create thermal environment to perform multi-domain system level simulation

• Create battery modules
• Model cell degradation and cell inconsistencies
• Model cell thermal effects using Simscape™
• Add thermal fidelity to the battery module

Day 2 of 2

Battery Management System

Objective: Introduction to battery management system. Develop supervisory control scheme for efficient and safe battery pack operation.

• Overview of a battery management system
• Design requirements and constraints
• Design Stateflow^® logic to charge a cell using CC-CV control scheme
• Design supervisory control logic of battery management system using Stateflow^®
• Implement a passive cell balancing network using Simscape™ and Stateflow®
  
• Create test scenarios for battery management system using Simulink Test™

State of Charge Estimation

Objective: Estimate state of charge (SoC) of a cell.

• Estimate the cell's state of charge using coulomb counting
• Estimate the cell's state of charge using extended Kalman Filter

Fault Monitoring and Current Limit Computation

Objective: Compute battery pack's charging and discharging current limits that satisfy design constraints and detect faults during pack operation.

• Detect over-voltage/over-current, short circuit, under-voltage/under-current faults during battery operation
• Compute current limits for host application
• Closed-loop simulation of battery pack with battery management system