In this course, we will take a look at the various Battery Thermal Management architecture and thermal management systems ISIEINDIA | Battery thermal management

Battery Thermal Management and Safety

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In the recent last decade, we have seen news reports regarding heating up of mobile phone batteries and in many cases, it has also exploded injuring the consumer. Similarly, we also have had cases of Hyundai Kona catching fire in the summer season, due to excessive heating of the cell. All these incidents have proved how important it is to monitor lithium-ion cells.

The lithium-ion chemistries provide a high energy density of about 120 - 200 Wh/kg, as compared to a 40 - 50 Wh/kg of lead-acid battery. Due to space restriction, this difference in energy density has been the major reason for gaining popularity of these cells in Electric Vehicles. Despite providing high energy density, these cells also can provide high charge and discharge rate as required, but running it at those high rates might cause an increase in temperature of the cell and create instability. This is known as thermal runaway.

In order to control this, it becomes necessary to use a Battery Thermal Management System to monitor the charge and discharge cycle as well as cell balancing. Along with this for battery packs employed in electric vehicles might also require a good thermal management system, to control the heat dissipation and keep cells within temperature limits.

In this course, we will take a look at the various BMS architecture and thermal management systems, along with simulations for thermal dissipation.


BMS Architecture for EV

BMS Architecture types used for 2 Wheeler and 4 Wheeler operation and how the communication and data gathering is different in both cases.

Battery Cooling Methods

Various cooling methods adopted by different companies for their battery pack. The cooling of the battery pack as per the utility and performance desired of the vehicle. Liquid Cooling vs Air Cooling battery packs.


Design BMS for a given Battery Pack Configuration

For a given real-time problem statement and a battery pack provided, design a BMS suitable for the operation.

Cooling System for Battery Pack

For a given performance criteria and charge and discharge cycle/ temperature profile of the battery pack choose a suitable thermal management system/ cooling system to be employed.

Program outcomes
  • Learn about measurements of current and voltage for battery safety.

  • Learn about the algorithm for cell balancing.

  • Learn about measurement of SOC and SOH.

  • Battery safety and control methods.

  • Circuit for overcharge and over discharge protection.

  • Mobile/Laptop/Tablet with good internet connectivity


  • 46 Lessons
  • 39:27:02 Hours
  • SOC, Cell Energy and Power00:21:40
  • Why BMS is needed?00:23:41
  • BMS Functionality00:19:13
  • Sensing and High Voltage Control00:31:31
  • High Voltage Contactor00:11:27
  • Isolation Circuit and Thermal Control00:25:12
  • OCV and SOC of Cell00:39:05
  • Linear Polarization00:52:02
  • Finding RC Values00:10:39
  • Hysteresis Voltage00:28:32
  • Enhanced Self Correcting Model00:11:32
  • Cell Testing and Coulombic Efficiency00:43:36
  • Temperature and OCV00:34:27
  • Assignment 1
  • Cell Dynamic Testing00:33:25
  • Model Simulation00:41:00
  • Assignment 2
  • Preliminary Approach towards Battery State02:20:00
  • Kalman Filter01:20:00
  • Extended Kalman Filter01:50:00
  • Sigma Point Kalman Filter 02:30:00
  • Lithium Ion Aging01:10:00
  • Estimating Parameter01:30:00
  • Least Square Methods01:55:00
  • Approximate Full Solution00:40:00
  • Example Simulations00:55:00
  • Balancing Speed00:30:00
  • Imbalance Cause and Balancing Introduction00:45:00
  • Balancing Circuit00:45:00
  • Why cell power limit required?00:15:00
  • Voltage Based Rate Limit00:30:00
  • Bisection Search and Limit Estimation00:45:00
  • Model Simplification and Calculation01:00:00
  • Simulation and Results01:00:00
  • Charging01:10:00
  • What is BTMS?00:10:00
  • Types of BTMS00:20:00
  • Heat vs Temperature00:10:00
  • Thermal Issue Sensing00:10:00
  • Case Study00:30:00
  • Thermal Runaway00:20:00
  • Cooling Methods00:30:00
  • Case Study00:20:00
  • Cooling Model01:00:00
  • Design BMS for a given Battery Pack04:00:00
  • Improve thermal efficiency of battery pack04:00:00

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