⚡ TLE9018 Master BMS - Production-Grade Dual Scope Control

An advanced multi-node desktop monitoring, cell balancing, and telemetry control interface built in Python for the Infineon TLE9018DQK 18-channel Li-ion Battery Monitoring and Balancing IC.

The software connects to daisy-chained Cell Supervision Circuits (CSCs) via high-speed isoUART (2 MBaud) through a TLE9015DQU transceiver bridge. It features an interactive CLI setup stage for dynamic COM port selection and NTC thermistor profiling, real-time 18-cell PCVM voltage acquisition, individual cell balancing control, and live 5-channel temperature tracking using a PyQt5/PyQtGraph dashboard.

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📸 Interface Preview & Key Features

• Dynamic COM Port Detection: Automatically scans available system serial ports during CLI startup, eliminating hardcoded port dependencies (COM9, etc.).
• Multi-Node Auto-Enumeration: Supports daisy-chained setups of 1 to 8 TLE9018 sensing ICs with automated IF_CFG (0xC0) final-node (FN) assignment.
• Dynamic NTC Hardware Footprint Configuration: Interactive terminal setup allowing on-the-fly bias current mapping (INTC) for mixed 10 kΩ and 100 kΩ thermistor channels.
• Synchronous 18-Cell PCVM Monitoring: 16-bit high-resolution cell voltage scanning using official partition masks (PART_CFG_0/1).
• Interactive Passive Balancing Engine: Instant bitmask translation for registers BAL_CTRL_0 (0xE6) and BAL_CTRL_1 (0xE7) across individual board targets.
• Hardware-Calculated NTC Telemetry: Direct decoding of EXT_TEMP_0..4 (0x5E–0x62) combining 10-bit ADC codes with 3-bit exponential current scaling indices (INTC).
• Non-Blocking Multi-Threaded GUI: Asynchronous serial I/O running in an independent background worker thread using queues (_PLOT_QUEUE, _COMMAND_QUEUE) to prevent PyQt UI freezes.

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📐 System Hardware & Electrical Specifications

Parameter	Value / Configuration
Sensing Transceiver	Infineon TLE9015DQU (UART to isoUART Bridge)
Sensing IC	Infineon TLE9018DQK
Communication Interface	Serial Port
Supported Daisy-Chain Nodes	1 to 8 Stacked Boards
NTC Channel 0	Fixed 100 kΩ NTC in 10 µA Bias Mode
NTC Channels 1–4	User-selected: 10 kΩ or 100 kΩ
Series Reference Resistor (R_{\text{TMP}})	100\ \Omega
Full-Scale ADC Range (FSR_{\text{TMP}})	2.0\text{ V}

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📁 Project Structure

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├── tle9018dqk/                 # Official Infineon Driver Package
│   ├── control.py              # Low-level UART frame builder & J1850 CRC calculation
│   └── registers.py            # Complete TLE9018 register address mapping dictionary
├── monitoring_CMBs.py          # Master Application (CLI Setup + Threaded PyQt5 GUI)
└── README.md                   # System Documentation