Building an EV Battery Health Command Center
Specialized Engineering Scope & Mission Challenge
An electric vehicle OEM launched a new high-voltage pack architecture but lacked centralized real-time observability across their commercial fleet in customer hands. Field battery management systems (BMS) reported cell voltage imbalance, thermal spikes, internal resistance fluctuations, and fast-charging degradation across thousands of battery packs. Without unified telemetry, battery engineering teams could not differentiate between transient thermal variances, individual weak cells, and potential thermal runaway hazards until dashboard check-battery warnings were triggered.
Granular Competency & Technical Requirement Matrix
Critical Engineering & Integration Complexities
- Massive data volumes generated by 96+ individual cell voltage monitors and thermistors per pack sampled at sub-second intervals.
- Intermittent cellular connectivity in rural and underground parking environments requiring robust edge store-and-forward caching.
- Noise introduced by regenerative braking and rapid DC fast charging masking subtle cell impedance degradation.
- Stringent cybersecurity controls preventing any unauthorized external command injection into the high-voltage BMS CAN bus.
Engineered Delivery & Execution Workflow
DBC CAN Mapping
Configured high-density DBC database decoders mapping proprietary BMS CAN frames into structured telemetry events.
Edge Pre-Filtering & Compression
Engineered an in-vehicle telematics edge agent to compress cell voltages and filter steady-state cruise noise.
Resilient Ingestion Fabric
Deployed a scalable cloud ingestion cluster capable of handling simultaneous data bursts from tens of thousands of active vehicles.
Electrochemical Health Models
Implemented digital pack models tracking delta-V cell imbalance and Coulombic efficiency drift over charging cycles.
Automated Thermal Anomaly Gates
Established real-time alerting for rapid temperature gradient rises and dendritic growth signatures.
Pack Health Dashboard
Designed an operations portal enabling battery engineers to drill from fleet-wide trends down to individual serial-numbered cells.
Field Validation & Teardown Alignment
Cross-validated cloud metrics against physical battery teardowns and bench cycler tests to continually refine thresholds.
Production Toolchains, Protocols & Frameworks
06 | PROJECT TARGETS
Project Targets and Business Impact
Customer Confidentiality Note: Customer identity, proprietary codebases, and commercial program specifics have been anonymized in accordance with non-disclosure agreements.