Application — Motor drive power
Requirement — The challenge was to handle 48V regulated auxiliary power within one pack in the motor drive power system.
Solution — We built a 48V regulated DC-DC converter into a Li-ion 14S pack (DC 50.4V, 5Ah).
Result — A discharge configuration rated at 5A maximum (30A peak @ ≤1.5s), housed in approx. 3kg, completes motor drive 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 | DMOP-504LI5-B50-CV24 |
|---|
General
| Model | DMOP-504LI5-B50-CV24 |
|---|---|
| Dimension | Approx. L190 x W180 x H75mm (including protrusions) |
| Weight | Approx. 3kg |
Battery ① Electrical specifications
| Battery Type | 14S Li-Ion |
|---|---|
| Nominal Voltage | 50.4V (42.0–58.8V) |
| Nominal Capacity | 5Ah |
| Energy | 252Wh |
| Max Discharge Power | 252W |
| Charging Method | CC-CV(Constant Voltage with Limited Current) |
| Standard Charging Condition (0.2C) | 58.4V±1%, 1A, CC-CVEnd Current : 0.1A (0.02C) |
| Max Charging Condition | 58.4V±1%, 1A, CC-CVEnd Current : 0.1A (0.02C) |
| Standard Discharge Current (0.2C) | 1A |
| Max Discharge Current | 5A |
| Instantaneous Discharge Current | 30A @ ≤1.5s |
| Discharge Cut-off Voltage | 42.0V3.0V per cell |
| DC-DC Converter | DC24V regulated output (Max 10A) |
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: 1P 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 |
Terminals · Control
| Terminal configuration | Positive(+) : 2P(++) Negative(-) : 2P(--) |
|---|---|
| Terminal specification | Rating: 600V, 100A (per pin) Operating temperature range: -40°C – +85°C |
| Terminal fastening and wiring | Bolt: SCREW M6X16 nut Thread: M6*P1.0(B5.0) |
| Charge/discharge switch (ON/OFF) | Option: charge/discharge rocker switch (ON/OFF) |