Oct 10, 2026Technical Articles & Engineering Insights
How Does Echelon Manufacture and Test OBCs?
Inside Echelon Energy's OBC process: requirement review, prototypes, functional and aging tests, thermal assessment, IATF 16949 production and delivery support.
An on-board charger (OBC) spends its working life in a hostile environment: voltage spikes, vibration, heat, dust and moisture. Before a unit ships, it has to survive all of it. Buyers often ask what actually happens between requesting a sample and receiving production units - who builds the chargers, and how they are verified. Who manufactures OBCs for commercial EVs? covers the supplier landscape; this article walks through how Echelon Energy manufactures and tests OBCs, step by step.
Step 1: Requirement Review and Vehicle Analysis
Every project starts with the vehicle, not the charger. The engineering team reviews the vehicle platform, battery voltage, required power, communication needs and project requirements - the inputs that determine which product platform fits and what has to be customized.
Step 2: Engineering Proposal and Product Platform
Based on the review, the team proposes a product platform and confirms the customization scope: electrical parameters, CAN communication, connectors and configuration. This is where an OBC + DC-DC combined unit, a specific voltage window or custom CAN messages get defined.
Step 3: Prototype Development
Samples are then built to the confirmed electrical, communication and interface requirements. Prototypes let vehicle makers validate fit, wiring, thermal behavior and CAN integration on the real vehicle before committing to series production.
Step 4: Testing and Validation
Each unit goes through functional testing and project validation before it leaves the factory. The scope covers:
- Functional testing: charging performance, conversion efficiency and full operating-mode checks.
- CAN communication validation: message formats, control commands and status feedback against the vehicle's BMS and VCU.
- Protection verification: over-voltage, over-current, over-temperature and short-circuit behavior.
- Aging tests: extended-run sessions that surface early-life failures.
- Thermal assessment: behavior under sustained load and at elevated ambient temperature.
Customers receive test results with their samples and can request adjustments before specifications are locked. For the buyer-side view, see what EV manufacturers should check during on-board charger performance testing.
Step 5: Series Production
Once specifications are confirmed, production runs on dedicated lines under an ERP-based digital production management system, with standardized quality control and final inspection on every batch.
Step 6: Delivery and Technical Support
Delivery covers shipping coordination and technical support - and continues into vehicle integration and later volume phases. The engineering team stays involved after the chargers arrive.
Manufacturing Capacity and Quality System
Echelon Energy operates under the IATF 16949 automotive quality system, with a production capacity of 30,000 units per month. Roughly 70% of the team works in R&D and technical roles, and a six-step process connects every project from requirement review to delivery support.
OEM and ODM Customization
Beyond standard products, Echelon supports OEM branding - logo, nameplate and private-label packaging - and ODM development: electrical parameters, CAN communication, connectors and configuration tailored to each vehicle project.
Conclusion
An OBC earns its place in a vehicle platform through engineering, testing and production discipline - not through a datasheet. Evaluating one for a commercial or specialty EV project? Share your battery voltage, power level and CAN requirements with our engineering team for a technical evaluation.
