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Position Overview

Our ePowertrain Team is growing and we have a great opportunity for HV Battery ESS (Energy Storage System) Modeling Engineer.

The engineer in this position will lead rechargeable energy storage system (RESS) modeling efforts, including the creation, integration, maintenance, execution, improvement, and validation of HV Battery models.

This is a hybrid position based in our Rochester Hills, MI, Lisle, IL or San Antonio, TX locations.

Responsibilities

• Development of cell-to-system electrical (and possibly physics & thermal) multi-parameter models and tools to assess RESS performance and predict behavior response, including but not limited to: SOC, SOP, SOH, voltage, current, and heat-rejection

• Scale models from cell to module to pack and vis-versa

• Simulate representative vehicle drive cycles, charging, and book-end conditions

• Validate HV battery models using cell and/or battery pack level characterization test data and vehicle meta-data. Calibrate and fine-tune RESS models and simulations to increase accuracy and confidence.

• Assess fidelity of supplier-provided models for ease-of integration, correlation, confidence, and accuracy. Work with supplier to correct model issues and implement improvements based on all available data & feedback.

• Work with the performance engineering team to integrate RESS models with propulsion and vehicle models

• Collaborate with cell engineering team on design of experiments to capture cell parameter data required for modeling efforts

• Collaborate with our TRATON partners and the OnCommand Connection group on battery analytics, including: RESS remote diagnostics, data acquisition, prognostics, and life estimation

• Utilize vehicle meta-data to optimize DoE and the number of cell, pack, and vehicle test-cases, by generating representative synthetic cycles

• Develop tools to optimize energy, power, and thermal energy flow using systems engineering principles

• Develop excel or script-based tools for static computation of ESS power, energy vs SOC and Temperature

• Develop tools and/or scripts to pre and post-process vehicle data as required

• Provide input and feedback on ESS design requirements – including requirements for cell throughput, power, and energy

• Work with our TRATON partners to optimize modeling and simulation processes, tools, and strategies

Minimum Requirements

• Bachelor’s degree in Engineering or Engineering Technology

• At least 5 years of experience in product design/development

OR

• Master’s degree in Engineering or Engineering Technology

• At least 3 years of experience in product design/development

OR

• PhD in Engineering or Engineering Technology

Additional Requirements

• Qualified candidates, excluding current Navistar employees, must be legally authorized on an unrestricted basis (US Citizen, Legal Permanent Resident, Refugee or Asylee) to be employed in the United States. Navistar does not anticipate providing employment related work sponsorship for this position (e.g., H-1B status)

Desired Skills

• Engineering degree, preferably with an emphasis on modeling work, MS or PhD preferred

• Strong understanding of battery chemical processes and equivalent circuit modeling

• Ability to apply system identification methods to identify key parameters of transfer functions for dynamic RESS models & transient behavior

• Ability to evaluate and apply different RESS model structures & equivalent circuit models to capture system dynamics & behavior

• Working experience on modeling and simulating cells, modules, and HV Energy Storage Systems

• Strong, multi-year experience with Matlab/Simulink, GTSuite, Python, COMSOL, ASIM, and/or other modeling tools

• Ability to script large workflows for efficient execution

• Experience with vehicle and system data acquisition tools and software (CANalyzer/INCA)

• Ability to aggregate and process large amounts of data into clear and concise output formats (graphs/PowerPoint slides)

• Able to clearly communicate complex concepts to leadership via email, PowerPoint, and live presentations

• DFSS green or black-belt certification preferred

• Proactive self-starter behavior is expected; must be able to deal with ambiguity and be able to effectively manage his or her time

• Patience and willingness to teach skills to others is a desired trait for this position

• Must be able to collaborate and work well in teams, including across brands and time-zones

• Experience with battery life modeling a plus

Company Overview

Navistar, Inc. (“Navistar”) is a purpose-driven company, reimagining how to deliver what matters to create more cohesive relationships, build higher-performing teams and find solutions where others don’t.

Based in Lisle, Illinois, Navistar or its subsidiaries and affiliates produce International® brand commercial trucks and engines, IC Bus® brand school and commercial buses, all-makes OnCommand® Connection advanced connectivity services, and Fleetrite®, ReNEWeD® and Diamond Advantage® brand aftermarket parts.

With a history of innovation dating back to 1831, Navistar has more than 14,500 employees worldwide and is part of TRATON SE, a global champion of the truck and transport services industry. Additional information is available at www.Navistar.com.

Accelerating the Impact of Sustainable Mobility

Visit us at www.Navistar.com to discover more about our organization

Navistar is an Equal Opportunity Employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics.

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