PROJECT TOPICEV Charging, Batteries & Clean Energy
Battery Discharge Analyzer
An electrical testing concept examining constant-current and dynamic pulse discharge cycles, 4-wire Kelvin resistance measurement, and multi-point temperature telemetry for lithium cells.
Cell Sorting & Battery Pack Longevity
- ✓Investigates closed-loop MOSFET linear mode control for constant-current sinking.
- ✓Implements 4-wire Kelvin sensing to eliminate lead resistance measuring errors.
- ✓Generates discharge discharge curves essential for matching cells before pack assembly.
The Engineering Challenge
Problem / Objective
Unmatched battery cells in parallel packs degrade prematurely and risk thermal runaway when internal resistances vary.
Conceptual Signal Flow
System Concept
Programmable Constant-Current MOSFET Sink → 4-Wire Kelvin Voltage Sense → Thermocouple Array → Capacity Curve.
Architecture Modules
1Linear MOSFET Constant-Current Sink
24-Wire Kelvin Sense ADC Stage
3Thermal Heatsink & PWM Fan Controller
4Microcontroller Telemetry & PC GUI
Hardware Categories
Power MOSFETsCurrent Shunt ResistorsPrecision ADCLarge Heatsink
Technologies & Software
Power ElectronicsKelvin SensingThermal ManagementBMS EngineeringC++ Current Regulation LoopPython Data Plotting Dashboard
Engineering Considerations & Edge Cases
- MOSFET thermal dissipation during low-voltage high-current discharge
- Precision shunt drift over operating temperature
Applications
Second-life battery grading
EV pack cell sorting
Laboratory battery benchmarking
Engineering Inquiry & Collaboration
Interested in Developing this Architecture?
Connect directly with Tamizh Tech engineers in Coimbatore to discuss mechanical fabrication, sensor selection, firmware implementation, or turnkey system commissioning.