Sr.

Design

Engineer-HVBMS : Lead OR Sr.

Design

Engineer - HVBMS Role Summary The HVBMS Design Engineer will be responsible for architecting, developing, and validating high-voltage battery management systems (400V–1500V) for advanced energy storage and electrification platforms. This role demands mastery of circuit design, embedded control, functional safety, and system integration, with a strong emphasis on technical excellence and compliance. --- Core Responsibilities · System Architecture o Define HVBMS topology, sensing, isolation, and protection strategies for large-format Li-ion packs. o Develop redundancy and fail-protected mechanisms aligned with ISO 26262 ASIL-D requirements. o Architect communication interfaces (CAN FD, Ethernet, ISO 15118) for seamless integration with vehicle/grid controllers. · Hardware Design o Design precision measurement circuits for voltage, current, and temperature sensing with high CMRR and isolation. o Develop balancing circuits (active/passive) optimized for efficiency and thermal performance. o Specify high-voltage contactors, pre-charge circuits, and solid-state switching elements. · Software & Algorithms o Implement SOC, SOH, SOP estimation using Kalman filters, neural networks, or equivalent advanced methods. o Develop real-time fault detection and diagnostic algorithms for over-voltage, over-current, thermal runaway, and isolation faults. o Ensure compliance with cybersecurity standards (ISO/SAE 21434), and real-time OS constraints.



· Validation & Testing o Conduct HIL/SIL simulations for algorithm robustness and edge-case scenarios. o EMC/EMI compliance validation. o Lead FMEA, FTA, and DFMEA processes for risk mitigation. · Cross-disciplinary Integration o Collaborate with mechanical engineers on pack enclosure, cooling, and vibration isolation. o Interface with inverter and charger teams to ensure seamless HV system operation. o Provide technical documentation for certification bodies and customer audits. --- Required Qualifications · Master’s/PhD in Electrical Engineering, Power Electronics, or Control Systems. · 5 years of hands-on experience in HVBMS design and validation. · Expertise in Li-ion chemistries (NMC, LFP, solid-state) and degradation modelling. · Robust command of embedded C/C , MATLAB/Simulink, and model-based design workflows. · Proven track record with ISO 26262, IEC 61508, UL 2580, SAE J2464 compliance projects. --- Preferred Expertise · Knowledge of advanced balancing (bi-directional active balancing, switched capacitor). · Familiarity with CFD-based thermal modelling for battery packs. · Hands-on experience with PCB design (Altium), circuit simulation (PSpice), and CAN tools (CANalyzer, Vector). --- Key Attributes · Precision-driven, safety-first mindset. · Ability to synthesize complex technical requirements into robust designs. · Strong analytical and documentation skills for technical audiences. · Innovative thinker with a focus on reliability and scalability. ---

📌 Senior Design Engineer - High Voltage Battery Management Systems (Bengaluru)
🏢 Larsen u0026 Toubro
📍 Bengaluru