Application — Autonomous vehicle system power
Requirement — The challenge was to handle high-output discharge and recharging while driving within one pack in the autonomous vehicle system power application.
Solution — We built an onboard charging module into a LiFePO4 4S pack (DC 12.8V, 528Ah).
Result — A discharge configuration rated at 300A maximum (600A peak @ ≤5s), housed in approx. 90kg, completes autonomous vehicle system power in a single pack.
If you are considering a custom build to a similar specification, submit a requirements sheet. Our engineer will review it and respond.
Specification
Specifications
| Product Code | BG-128LF528-B600-12C60 |
|---|
General
| Model | BG-128LF528-B600-12C60 |
|---|---|
| Dimension | Approx. L602.5 x W519.3 x H153mm (including protrusions) |
| Weight | Approx. 90kg |
Battery ① Electrical specifications
| Battery Type | 4S LiFePO4 |
|---|---|
| Nominal Voltage | 12.8V (11.2–14.7V) |
| Nominal Capacity | 528Ah |
| Energy | 6,758.4Wh |
| Continuous Max Power | 3,840W |
| Charging Method | CC-CV(Constant Voltage with Limited Current) |
| Standard Charging Condition (0.2C) | 14.6V±1%, 105.6A, CC-CVEnd Current : 10.56A (0.02C) |
| Max Charging Condition | 14.6V±1%, 250A, CC-CVEnd Current : 10.56A (0.02C) |
| Standard Discharge Current (0.2C) | 105.6A |
| Max Discharge Current | 300A |
| Instantaneous discharge current | 600A @ ≤5s |
| Discharge Cut-off Voltage | 11.2V2.8V per cell |
| Alternator charger rated input | 12.3–22.0V, MAX 80A |
| Alternator charger rated output | Option (C60): 14.6V, 60A (CC-CV) |
| Input Low Voltage Cut-off | ≤12.3V |
Battery ② Operation · Safety
| Max Temperature Range | Charging: 0 – +45°C Discharging: -20 – +55°C Storage (recommended): +5 – +30°C |
|---|---|
| Battery Management System | Module configuration: 8P Overcharge cutoff: 3.70–3.90V±25mV per cell Overcharge recovery: 3.50–3.70V±50mV per cell Over-discharge cutoff: 2.00–2.50V±25mV per cell Over-discharge recovery: 2.40–2.90V±50mV per cell Overcurrent cutoff: 135A–160A±25% per module Short-circuit protection: Yes Over-temperature cutoff: Yes Cell balancing: Yes Control method: MOSFET |
| Storage Life | Up to 6 months under no-load conditionsState of charge: SoC 60% Environment: ambient 25°C, humidity ≤70% |
| Cycle Life | ≥60% of nominal capacity after 2,500 cycles Charge/discharge condition: standard charge, then discharge at the standard discharge current down to the cut-off voltage Environment: ambient 25°C, humidity ≤70% |
Terminals · Control
| Terminal configuration | |
|---|---|
| Terminal specification | |
| Fastening · Wiring | |
| Charge/discharge switch (ON/OFF) |