Application — Special-purpose vehicle power
Requirement — The customer needed a power source for special-purpose vehicle power with AC220V mains power and recharging while driving.
Solution — We combined an AC220V 4kW inverter and an onboard charging module into a Li-ion 7S pack (DC 25.2V, 5,443Wh) as a single unit.
Result — The integrated build in an approx. 55kg housing met the special-purpose vehicle power specification.
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 | DMOP-LI5443-AC4000-C25 |
|---|
General
| Model | DMOP-LI5443-AC4000-C25 |
|---|---|
| Dimension | Approx. L566 x W250 x H392mm (including protrusions) |
| Weight | Approx. 55kg |
Battery ① Electrical specifications
| Battery Type | 7S Li-ion |
|---|---|
| Nominal Voltage | 25.2V (21.0–29.4V) |
| Nominal Capacity | |
| Energy | 5,443Wh |
| Max Discharge Power | |
| Charging Method | CC-CV(Constant Voltage with Limited Current) |
| Standard Charging Condition (0.2C) | 29.2V±1%, 40A, CC-CVEnd Current : 4.3A (0.02C) |
| Max Charging Condition | 29.2V±1%, 50A, CC-CVEnd Current : 4.3A (0.02C) |
| Standard Discharge Current | |
| Max Discharge Current | |
| Instantaneous Discharge Current | |
| Discharge Cut-off Voltage | 21.0V3.0V per cell |
| AC output | AC 220V – 4,000W(60Hz) (Surge 5,000W ≤ 1.5Sec) |
| Charge Module | IN - 12.5–22.0Vdc OUT - 29.2Vdc, Max 25A (CC-CV mode) |
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: 6P Overcharge cutoff: 4.20–4.25V±25mV per cell Overcharge recovery: 4.00–4.20V±50mV per cell Over-discharge cutoff: 2.50–2.90V±80mV per cell Over-discharge recovery: 2.70–3.30V±100mV per cell Overcurrent cutoff: 100A–125A±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 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) | charge/discharge rocker switch (ON/OFF) |