Senior Battery Pack System Simulation Engineer M/F

Job Description

As a Senior Battery Pack System Simulation Engineer, you are responsible for developing and maintaining system-level battery pack models to support battery pack development across all applications, including automotive.

You build and integrate surrogate/reduced-order models in close collaboration with the CAE engineers covering electrical, electrochemical, thermal, mechanical, durability, control, safety, and optimization aspects of battery pack systems.

You own your surrogate/equivalent-circuit/reduced-order model requirements and the associated parameter identification and validation workflows, in close collaboration with the CAE engineers and with support from BMS, testing, and validation engineers.

You provide simulation-based insight to support architecture trade-offs, control development, performance prediction, lifetime assessment, and safety-oriented engineering decisions.

This role is part of the CAE \& Advanced Methods Group and supports the Battery Pack and System Group with system-level simulation evidence for pack architecture justification, optimization, root-cause analysis, and with control-oriented simulations for BMS/BTMS calibration, validation, robustness and verification.

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**Main responsibilities :**

**1. System-Level Battery Pack Model development \& Simulation**
* Develop and maintain multi-domain battery pack models representing electrical, electrochemical and thermal behaviors as well as pack durability, swelling and cooling loop operation and control.

* Define the appropriate model fidelity and simulation approach depending on project phase, use case, and required decision timeline.

* Develop and operate workflows for trade-off studies, sensitivity analysis, design of experiments, surrogate model generation, and multi-objective optimization (safety constraints, integration constraints, mass, and cost-related drivers, ...)

* Assess implication of control strategy and BMS/BTMS algorithms on system operation and fault scenarios (MiL, SiL).

* Run simulations for normal (usage profiles, testing, thermal) and fault conditions, including cooling loss scenarios, sensor failures or drift, electrical fault conditions, thermal excursions, and safety-relevant operational limit studies.

* Model and workflow standardization, automation and documentation

**2. Empirical \& EC-Type Model Requirements, Development \& Parameter Identification**
* Establish and own model requirements for equivalent circuit, thermal, ML, and other empirical/surrogate/reduced-order battery models for system simulation and control-oriented applications under normal and fault scenarios.

* Support CAE engineers for the development, maintenance, and deployment of ECM/ROM/ML/surrogate models.

* Coordinate model parameter identification with CAE, testing, and product validation engineers at the cell, module, and pack levels, including OCV and DCIR/ACIR, SOC/temperature dependencies, and aging-related parameter evolution.

* Maintain model assumptions and limitations, parameter traceability, model-change traceability, validation status, applicability domain, and release and usage guidelines.

**3. Multi-Physics Model Integration**
* Integrate domain knowledge into the battery pack system models and translate high-fidelity simulation inputs into fast and decision-oriented system models in close collaboration with CAE engineers.

* Develop co-simulation workflows with integrated high-fidelity models through direct coupling or using FMI/FMUs.

**4. BMS/BTMS Algorithm Development \& Control-Oriented Support**
* Develop advanced state estimation (SOC, SOH, SOX) algorithms, including KF, MHE, physics-based, and machine-learning approaches and incorporate/execute in system simulation workflows.

* Evaluate/recommend voltage/current/temperature limits, derating strategies, balancing impact, temperature non-uniformity, cooling system operation limits and constraints, sensor sensitivity, etc.

* Contribute to Verkor's IP portfolio.

* Provide simulation support to the BMS development engineer for model-based verification and validation, including estimator robustness and calibration, MiL, SiL and HiL test bench.

**Requirements :**
* Master's degree (Bac 5) or PhD in Electrical Engineering, Systems Engineering, Control Engineering, Mechanical Engineering, or equivalent.

* Specialized knowledge in system control design and state estimation algorithms (KF, MHE, ML, empirical, ...), Li-ion battery cells and packs, BMS and BTMS, MiL, SiL.

* 5 years of experience minimum in battery or other electrified system simulation (automotive OEMs/Tier 1 suppliers preferred), including state estimation and control, with demonstrated technical track record and model development/maintenance ownership.

* Proficiency in system simulation tools (Simulink, Simscape/Modelica, Ansys Twin Builder, Amesim, ...) and scientific coding (Python, Matlab).

* Experience in surrogate and reduced-order modelling, including model building, calibration, and validation.

* Experience in multi-domain system model integration and model-based system design.

* Experience in multi-objective optimization (trade-offs, pareto front, etc.), statistical analysis (error propagation, uncertainty quantification, robustness, etc.), and other study scenarios.

* Familiar with electrochemical engineering, battery chemistries (NMC, LFP, ...), thermal engineering, and battery durability.

* Familiar with battery safety and system fault scenarios.

* Proficiency in English / French is a plus.

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