LITHIUM BATTERIES
Lithium Batteries (LiFePO4): high-reliability energy storage for electric conversions
At EVEA Solutions, we primarily work with lithium iron phosphate (LiFePO4) battery systems for electric conversion and electrification projects. This chemistry is particularly well suited to demanding applications (light commercial vehicles, industrial machines, agricultural equipment, marine) thanks to its thermal stability, robustness, and its ability to deliver high current consistently. The goal is not simply “to have a battery”, but to implement a coherent energy system: range, available power, mechanical packaging, protections, high-current wiring, and BMS communication with the rest of the drivetrain.
Technical characteristics (LiFePO4) and integration considerations
| Parameter | Description |
|---|---|
| Chemistry | LiFePO4 (lithium iron phosphate): excellent stability, well suited to intensive duty cycles |
| Nominal cell voltage | ≈ 3.2 V (typical LiFePO4) |
| Pack architecture | Series/parallel assemblies (S/P) based on system voltage (e.g., 48V/72V/96V) and required range |
| Cycle life | Typically several thousand cycles depending on depth of discharge, temperature, and current (cell-dependent) |
| Current (charge/discharge) | Sized to the duty profile: power peaks, continuous operation, thermal rise, and voltage sag |
| BMS (Battery Management System) | Balancing, protections (OV/UV, overcurrent, overtemperature), SOC/SOH estimation, communication depending on model |
| Operating temperature | Depends on cells and pack: thermal management / ventilation recommended for harsh duty |
| Safety & integration | Contactor, pre-charge, fuses/breakers, high-current cabling, connectors, mounting and insulation |
Real-world use cases in electric conversion
- Light commercial vehicles (48–96V): LiFePO4 packs designed for stop-and-go duty cycles, strong launch torque, and daily operation (delivery, service fleets), with close attention to continuous power and peak current capability.
- Industrial machines (pumping, handling, compact equipment): storage sized for “constant torque” or “variable load” profiles, including DC protections (pre-charge/contactor) and compatibility with motor controllers/inverters.
- Agricultural equipment: secured range for long operating cycles, vibration resistance, and configurations adapted to field constraints (dust, humidity), prioritizing reliability and serviceability.
- Marine / onboard auxiliary power: LiFePO4 packs for auxiliary propulsion or onboard energy systems, valued for stability and endurance, with careful integration (mounting, ventilation, DC protections).
Our approach focuses on battery systems built for integration: voltage/power consistency, DC safety components, cabling and connectors, and functional compatibility with the overall project ecosystem (motor controller, charger, DC-DC converter, instrumentation).
