Smart Portable Charger
A compact 120W portable charging solution with intelligent power delivery and real-time diagnostics.
📝 Project Overview
Smart Portable Charger was designed as a premium, high-efficiency charger tailored for modern mobile and computing devices. It combines advanced power architecture, robust thermal design, and a smart BMS in a sleek, portable form factor — perfect for on-the-go power users.
⚙ Technical Breakdown
🔌 Power Architecture
Input: USB-C Power Delivery (PD) up to 120W (Extended Power Range)
Outputs: Dual 60W regulated fast-charging ports
Power Control: H-Bridge topology managed by an STM32 MCU with real-time voltage & current feedback
🔋 Battery Configuration
Battery Pack: 4x 3.7V, 3.5Ah Li-ion cells in series
Total Capacity: ~51.8 Wh
Smart BMS Features:
Coulomb counter for accurate SoC tracking
Cell balancing for long-term reliability
Protection circuits: over-voltage, over-current, thermal faults
🌡 Thermal & Mechanical Design
Simulation: Thermal profiling and layout optimization via ANSYS
Design: Compact, safe under peak power, with optimized component placement for heat dissipation
📡 Smart Control & Connectivity
Controller: STM32 Microcontroller
Power regulation and gate driver control
Telemetry, diagnostics, and BLE management
Connectivity:
Bluetooth Low Energy (BLE)
Smartphone pairing with “Find My Device” support
Real-time monitoring of temperature, SoC, and battery health
✅ Outcome
Delivered a market-ready prototype with efficient energy transfer, robust thermal safety, and smart user connectivity — enabling seamless portable charging for next-gen electronics.