1. Introduction
The DEMUDA HVM series is a high-voltage stackable Lithium Iron Phosphate (LFP) battery pack designed for home solar energy storage systems. This all-in-one rechargeable battery system features a modular design, allowing for easy expansion and flexible configuration to meet various energy demands. It integrates a Battery Management System (BMS) for optimal performance and safety, making it an efficient and reliable solution for your energy needs.
2. Safety Information
Please read and understand all safety instructions before installation, operation, or maintenance of the battery pack. Failure to follow these instructions may result in electric shock, fire, serious injury, or death.
- Ensure all electrical connections are made by qualified personnel.
- Do not attempt to open, disassemble, or modify the battery pack.
- Keep the battery pack away from water, heat sources, and flammable materials.
- In case of fire, the unit is equipped with a built-in fire extinguishing device for automatic thermal runaway state processing.
- Always wear appropriate personal protective equipment (PPE) when handling the battery.
- Ensure proper ventilation around the battery pack.
3. Product Overview
The DEMUDA HVM battery pack features a multi-functional design with an LED display and a robust, stackable structure. It includes universal wheels for easy placement and mobility.
The system is designed for modular stacking, allowing for easy expansion. Each module contributes to the overall height and capacity of the system.
Key components and their functions are illustrated below:
- LCD Display Interface: Provides real-time monitoring of system status.
- Battery Module: Individual stackable units of the battery pack.
- Go to The Wheel: Universal wheels for easy movement.
- Communication Port: For external communication (CAN, RS232, RS485).
- M6 Positive Terminal: Positive connection point.
- M6 Negative Terminal: Negative connection point.
- Box Handle: For handling individual modules.
- Start Button: Initiates battery operation.
- Stop Button: Halts battery operation.
- Emergency Stop Button: Immediately shuts down the system in emergencies.
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | DEMUDA |
| Model Number | HVM |
| Battery Type | Lithium Ion (LiFePO4) |
| Certification | CE |
| DIY Supplies | Electrical |
| Place of Origin | China |
| System Voltage | 51.2 V (per module) |
| Output Power Range | 10~20 kWh (scalable) |
| System Type | Stackable, Rack-mounted, All-in-one |
| Communication Port | CAN, RS232, RS485 |
| Protection Class | IP54 |
| Grid Connection | Off-grid, Hybrid grid |
| Function | Solar Energy Storage |
| Nominal Voltage | 96V-384V (system dependent) |
| Operating Voltage Range | 80-438V (system dependent) |
| Installation | Floor installation |
| Operation Temperature | -10~60°C |
| BMS Monitoring Parameters | SOC, System voltage, current, cell voltage, cell temperature, PCBA |
| Warranty | 5 years |
The HVM battery system is composed of 2 to 8 HVM battery modules connected in series to achieve a usable capacity of 9.6 to 38.2 kWh. The system is scalable by adding HVM modules later.
5. Setup
5.1 Unpacking and Inspection
Upon receiving your DEMUDA HVM battery pack, carefully unpack all components. Inspect for any visible damage during transit. Ensure all listed components are present.
5.2 Modular Assembly
The HVM series features a modular stacking design. You can connect 2 to 8 battery modules in series to achieve your desired system voltage and capacity.
The system uses quick plug connectors on the back for series wiring, simplifying the assembly process.
5.3 System Connection
The DEMUDA HVM battery pack integrates seamlessly into a household energy storage system. Below is a schematic diagram for typical connections:
Connection Points:
- Solar Panels: Connect your solar panels to the hybrid solar inverter.
- Hybrid Solar Inverter: This device manages the power flow between solar panels, the battery pack, the electric supply, and household appliances.
- LiFePO4 Battery Module: The DEMUDA HVM battery pack connects to the hybrid solar inverter.
- Electric Supply: Connect to the main grid for hybrid systems.
- House Appliances: Connect your household loads to the inverter output.
- Communication System: Utilize the CAN, RS232, or RS485 ports for communication with the inverter or monitoring systems.
Ensure all connections are secure and follow local electrical codes. Consult a professional electrician for installation if you are unsure.
6. Operating Instructions
6.1 Initial Power-Up
- After all physical connections are securely made, press the Start Button (8 in Figure 3) on the battery pack.
- Observe the LCD Display Interface (1 in Figure 3) for system status and initial readings.
- Refer to your hybrid solar inverter manual for its specific power-up sequence and synchronization with the battery.
6.2 Monitoring System Status
The LCD display provides real-time information on critical parameters such as State of Charge (SOC), system voltage, current, individual cell voltage, cell temperature, and PCBA status. Regularly check this display to ensure optimal operation.
6.3 Shutting Down the System
- To temporarily shut down the battery pack, press the Stop Button (9 in Figure 3).
- In an emergency, press the Emergency Stop Button (10 in Figure 3) to immediately power off the system.
7. Maintenance
The DEMUDA HVM battery pack is designed for minimal maintenance, but regular checks are recommended to ensure longevity and optimal performance.
- Visual Inspection: Periodically inspect the battery pack for any signs of physical damage, loose connections, or corrosion.
- Cleaning: Keep the exterior of the battery pack clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Ventilation: Ensure that the ventilation openings are not blocked to prevent overheating.
- Firmware Updates: Check with DEMUDA support for any available firmware updates for the BMS to ensure the system operates with the latest features and optimizations.
8. Troubleshooting
The integrated Battery Management System (BMS) provides comprehensive protection and monitoring. If you encounter issues, check the LCD display for error codes or warnings.
The BMS protects against:
- Overcharge Protection
- Overload Protection
- Overvoltage Protection
- Overcurrent Protection
- Low-Voltage Protection
- Short-Circuit Protection
- Temperature Protection
- General Battery Protection
Common Issues and Solutions:
- System Not Powering On: Check all power connections, ensure the Start Button is pressed, and verify the main power supply.
- Low Power Output: Check the State of Charge (SOC) on the LCD. Ensure solar panels are generating sufficient power and the inverter is functioning correctly.
- Error Code Displayed: Note down the error code from the LCD and consult the DEMUDA support for specific troubleshooting steps.
- Unusual Noise or Smell: Immediately press the Emergency Stop Button and contact qualified service personnel.
9. User Tips
- Optimal Sizing: Plan your battery capacity carefully. The modular design allows you to start with fewer modules and add more later as your energy needs grow.
- Regular Monitoring: Periodically check the LCD display for system health and performance. This helps in early detection of potential issues.
- Professional Installation: For complex setups involving grid connection or multiple energy sources, always engage a certified electrician or solar installer.
10. Warranty & Support
10.1 Warranty
The DEMUDA HVM Lithium Ion Battery Pack comes with a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service conditions. Please retain your proof of purchase for warranty claims.
10.2 Technical Support
For technical assistance, troubleshooting, or warranty inquiries, please contact DEMUDA customer support. Provide your product model number and a detailed description of the issue to facilitate quicker service.
