30V50Ah DC Power System
The composition of the DC power system
*Rectifier module
*Battery system
*Comprehensive detection unit
*Centralized monitoring module
*Other components
The work principle of the DC system
AC normal working condition:
When the AC input of the system supplies power normally, the AC power distribution unit supplies power to each rectifier module. The high-frequency rectification module converts AC power into DC power, and outputs it through a protective device (fuse or circuit breaker). On the one hand, it charges the battery pack, and on the other hand, it provides normal working power to the DC load through the DC power distribution feed unit.
AC power loss working state:
When the system's AC input fails and the power is cut off, the rectifier module stops working, and the battery supplies power to the DC load without interruption. The monitoring module monitors the discharge voltage and current of the battery in real time, and when the battery discharges to the set end voltage, the monitoring module gives an alarm. At the same time, the monitoring module displays and processes the data uploaded by the power distribution monitoring circuit at all times.
Battery System
Battery Cell
Battery cell data sheet
| No. | Item | Parameters |
| 1 | Nominal voltage | 3.2V |
| 2 | Nominal capacity | 50Ah |
| 3 | Rated working current | 25A(0.5C) |
| 4 | Max. charging voltage | 3.65V |
| 5 | Min. discharge voltage | 2.0V |
| 6 | Max Pulse charge current | 2C ≤10s |
| 7 | Max Pulse discharge current | 3C ≤10s |
| 8 | AC internal resistance | ≤1.0mΩ (AC Impedance, 1000 Hz) |
| 9 | Self-discharge | ≤3% |
| 10 | Weight | 1.12±0.05kg |
| 11 | Dimensions | 148.2*135*27mm |
Battery Pack
Battery pack data sheet
| No. | Item | Parameters |
| 1 | Battery type | Lithium iron phosphate(LiFePO4) |
| 2 | Nominal voltage | 32V |
| 3 | Rated capacity | 50Ah @0.3C3A，25℃ |
| 4 | Operating current | 25Amps |
| 5 | Peak current | 50Amps |
| 6 | Operating voltage | DC 25~36.5V |
| 7 | Charge current | 25Amps |
| 8 | Assembly | 10S1P |
| 9 | Boxmaterial | Steel plate |
| 10 | Dimensions | 290(L)*150(W)*150(H)mm |
| 11 | Weight | About 14 kg |
| 12 | Operating temperature | - 20 ℃to 60 ℃ |
| 13 | Chargetemperature | 0 ℃to 45 ℃ |
| 14 | Storage temperature | - 10 ℃to 45 ℃ |
BMS Electrical Parameters
| Technology Name | Common parameters |
| Charge and discharge withstand voltage | 100V |
| communication method | Bluetooth, RS485 , Serial port , CAN GPS |
| Number of battery strings | 9-15 skewers |
| Cell Type | Ternary lithium battery, lithium iron phosphate, lithium titanate |
| Temperature number | 3 |
| Balance current | 120mA |
| voltage range | 0.5V – 5V |
| Voltage accuracy | 0.5 % ( 0 ℃ - 80 ℃ ) , 0.8 % ( -40 ℃ - 0 ℃ ) |
| temperature range | -40 ℃ - 80 ℃ |
| Current range | -100A – 100A ( determined by the model of the same series product) |
| Current accuracy | 2% (-100A – 100A) |
| CAN communication | Support CANOPEN , CAN customization |
| RS485 | Isolation, modbus protocol |
| Manual wake-up | support |
| Charging wake-up | support |
| Bluetooth | Support Android APP , Apple mobile phone APP |
| Low battery indicator | Low battery alarm IO output |
| SOC Accuracy | <5% |
| B- Drop protection | not support |
| Operating power consumption | 20mA |
| Standby power consumption | 2mA |
| Storage and transportation power consumption | 40uA |
| Event Storage | 120 loop event records |
| Status Indicator | 2 LED status lights |
| Battery indicator | Support 5 -grid power display, 4 -grid power display and LCD digital display |
| storage temperature | -20 ℃ - 60 ℃ |
| 0V charging | Does not support 0V charging |
| Hibernation Description | BMSAutomatic standby conditions :The automatic sleep function is set to on. When the battery is not charged or discharged, there is no communication, no Bluetooth link, and no balancing. 30 S (time can be adjusted by the host computer ), thenBMS Enter standby mode.the BMS automatically enters standby mode, the charge and discharge ports remain in the closed state (powered ) . |
How to connect the BMS
30V DC Power Rectifier-Technical parameters
Input characteristics
| Input voltage range | 120 ~ 370VDC |
| Frequency range | 47 ~ 63Hz |
| Alternating current | 3.6A/230VAC |
| Inrush current | 70A/230VAC |
| Efficiency | 89% |
| Power factor | PF>0.93/230VAC (full load) |
| Leakage Current | <1.2mA / 240VAC |
Output characteristics
Power Rectifier function:1. DC OK signal PSU on: 3.3 ~ 5.6V; PSU off: 0 ~ 1V2. Fan control When the load is 35±15% or RTH2≧50℃, the fan turns on
| Output voltage range | 28.8 ~ 39.6V |
| Regulation | ±1.0% |
| Ripple & Noise (Max.) | 200mVp-p |
| Voltage Tolerance Limit | ±5% |
| Start-up, rise time | 1,800 ms, 50ms / 230VAC(Full load) |
| Rated current | 17.5A |
| Max transient current | >32A |
| Charging Hours after battery total discharged | <3Hours |
| DC Voltage | 36V |
| Rated Power | 630W |
| Proposed Standing load | <360W |
Power Rectifier Protect function:
1. Overload protection 105%~135% of rated output power Protection mode: constant current limit, automatically recovers after abnormal load conditions are removed
2. Overvoltage protection 41.4~48.6V Protection mode: shut down output, normal output can be restored after power is restarted
3. Overtemperature protection shuts down output, and automatically recovers after temperature drops
Power Rectifier Working Graph
Ambient temperature (℃）
Input voltage(V)60Hz
Monitoring System
Introduction
Cyclone monitors use a human-machine interface, an electric power operation power supply monitoring system composed of an mcgsTpc embedded integrated touch screen and a detection unit. The main monitor is composed of the UM series monitors representing our company's core technology, suitable for DC systems below 1000AH, completing charge and discharge management and various monitoring tasks, and can form electric power operation power supply systems of various voltage levels in conjunction with various charging modules produced by our company. Cyclone monitors all have reliable background communication functions, and are particularly suitable for unattended and automatic operation occasions.
Basic configuration:
*Human-machine interface: TPC 70 22 ( 7- inch high-brightness TFT LCD display)
* Controller: TY-UM 1 unit
* 7-inch TFT LCD display
* Current sensor: 2
*Small power supply: 1 set
Display Interface Details
DC panel cabinet
The dimensions of DC power supply system cabinet are 700(H)*500(W)*220(D)mm .
Electrical Schematic for DC system
