🔋 PCB_DESIGN_OF_BMS

Battery Management System (BMS) | Designed in Altium Designer

This project presents a compact and efficient Battery Management System (BMS) designed using Altium Designer.
It ensures safe charging, discharging, and protection of a single-cell Li-ion (18650) battery with monitoring, indicators, and protection circuitry.
Optimized for reliable Li-ion battery performance and safety in embedded and power electronics applications.

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⚙️ Key Features

• Charging Section (TP4056 IC)
  • Constant current / constant voltage charging
  • Built-in thermal regulation with NTC temperature sensing
  • Simple resistor-based current programming (Rprog)
• Battery Protection Circuit (DW01A + FS8205A MOSFET)
  • Overcharge, overdischarge, and short-circuit protection
  • Automatic cell cutoff for enhanced battery life
• Indicator Section
  • Red LED → Charging
  • Green LED → Fully Charged / Standby
• USB Charger Input
  • Mini USB 5V input for convenient charging
• Protected Output
  • Safe load connection with short-circuit and overdischarge protection

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🧮 RProg Calculation Example

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🧩 Circuit Overview

1. Charging Circuit

• Uses TP4056 for precise charging control
• Includes charge and standby indication LEDs
• Optional NTC thermistor (10K) for temperature protection

2. Battery Protection Circuit

• DW01A protection IC monitors cell voltage
• FS8205A dual MOSFET handles switching and protection
• Safeguards against overcurrent and reverse polarity

3. Indicators

• Dual LED display (Red/Green) for real-time status feedback

4. USB Charger Input

• Mini USB connector for 5V input
• Filters provided via 10µF capacitor for stable operation

5. Protected Output

• 2-pin header output with built-in protection circuitry

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🛠️ Design Information

• Software Used: Altium Designer
• Input Voltage: 5V DC via USB
• Battery Type: 3.7V Li-ion (18650 cell)
• Charging IC: TP4056
• Protection IC: DW01A
• Power MOSFET: FS8205A Dual MOSFET
• LEDs: Red (CHRG) & Green (STDBY)
• Thermistor: 10K NTC (Optional for temperature monitoring)

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⚡ Applications

• IoT Devices
• Embedded System Projects
• Portable Power Modules
• DIY Battery-Powered Electronics
• Smart Battery Packs

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📂 Repository Structure

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📸 Circuit Preview

The design includes the following sections:

• Charging Circuit with TP4056
• Battery Protection using DW01A + FS8205A
• Indicator LEDs for charge status
• USB Input and Protected Output terminals

(Replace with actual image path if available)

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🧠 Author

Designed by: Harsh Saini
Tool Used: Altium Designer
GitHub: github.com/harsh-hw-dev

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🪄 Keywords

BMS Battery Management System TP4056 DW01A FS8205A
Li-ion Charger PCB Design Altium Designer Electronics Project Power Management

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📜 License

This project is open-source for educational and prototyping purposes.
Please provide credit if reused or modified.