The selected 630W N-type TOPCon PV module is a mainstream high-power product in the distributed PV market. It adopts 210mm large-size silicon wafers and N-type TOPCon cell technology, delivering core advantages such as high conversion efficiency, low attenuation and high reliability. Key electrical performance parameters are listed below:

• Maximum Power (Pmax): 630Wp, power tolerance 0~+0.78%, ensuring actual output power is no lower than the nominal value
• Maximum Power Voltage (Vmpp): 36.6V; Maximum Power Current (Impp): 17.22A, compatible with the MPPT operating range of mainstream string inverters and energy storage equipment
• Open-Circuit Voltage (Voc): 43.9V; Open-circuit voltage temperature coefficient: -0.04%/℃, excellent voltage stability under wide temperature conditions
• Module Efficiency: Up to 22.3%, generating more electricity per unit area under standard test conditions, ideal for residential rooftops with limited installation space

This integrated energy storage unit integrates lithium iron phosphate battery cells, high-frequency inverter, MPPT controller and intelligent management system. No additional inverters or controllers are required, enabling easy installation and comprehensive functions. Its core technical parameters are as follows:

Energy Storage Unit Parameters

• Nominal Voltage: 51.2V; Nominal Capacity: 400Ah; Rated Energy: 20480Wh (20kWh)
• Charge Cut-off Voltage: 58.4V; Discharge Cut-off Voltage: 44.8V~46.5V
• Constructed with lithium iron phosphate cells, featuring high safety, long cycle life and wide operating temperature range; over 8,000 charge-discharge cycles with a service life exceeding 10 years

Inverter Unit Parameters

• Rated Output Power: 10kW; Output Waveform: Pure sine wave
• Output AC Voltage: 100V/110V/220V/230V ±5% wide-range adaptability; Switchable input frequency: 50Hz/60Hz
• Conversion efficiency above 98%, outstanding efficiency under low-load operation, capable of stably driving all types of household electrical appliances

MPPT Controller Parameters

• Dual independent MPPT channels; maximum PV input power per channel: 5,400W; total maximum PV input power: 10,800W
• MPPT operating voltage range: 90V~450V; MPPT tracking efficiency ≥99.5%, accurately matching the output characteristics of PV modules to maximize power generation

Intelligent & Safety Design

• Supports simultaneous charging via AC mains and PV power with intelligent automatic priority identification of power sources
• Equipped with an LCD smart display to view real-time system operating status, charge/discharge data and fault information
• Built-in RS232/RS485/CAN communication interfaces for remote monitoring and system firmware upgrades
• Comprehensive protection against overvoltage, undervoltage, overload, short circuit and overtemperature
• Stable operation under ambient temperature of -20℃~60℃, humidity ＜95% and altitude below 4,000m

Mobile Structural Design

• Overall dimensions: 700×420×600mm, fitted with universal casters for easy pushing and relocation without fixed installation. The deployment position can be adjusted flexibly according to power consumption demands to suit multiple usage scenarios.

Voltage Matching Verification

Per the 630W module parameters, the open-circuit voltage of a single module is 43.9V. After connecting 8 modules in series, the open-circuit voltage of one string reaches 8 × 43.9V = 351.2V, and the maximum power voltage of one string equals 8 × 36.6V = 292.8V. The MPPT operating voltage range of the energy storage all-in-one machine is 90V~450V. Under standard test conditions as well as extreme high and low temperature environments, the string voltage stays fully within the MPPT working window without risks of overvoltage or undervoltage. The MPPT controller can continuously track the maximum power point of the modules to maximize PV power generation.

Power Matching Verification

The total nominal power of 16 × 630W modules is 10,080W (10.08kW), while the total upper PV input limit of the dual MPPT channels is 10,800W. The system input power only accounts for 93.3% of the upper limit, reserving sufficient power redundancy to offset long-term module power attenuation and allow the inverter to run efficiently without overload risks.

Charge-Discharge Matching Verification

The system generates 50.4kWh of electricity daily under 5 effective sunlight hours, and the 20kWh large-capacity energy storage unit can be fully charged within this period. Excess generated power directly supplies household loads. At night or on cloudy days, the storage unit discharges to power household appliances, realizing stable 24-hour power supply that perfectly fits residential power consumption curves.

• Ultimate Adaptability to Maximize Power Generation Efficiency Every link from module selection, series-parallel layout to energy storage equipment matching features precise electrical parameter alignment. The 8-series module architecture perfectly fits the optimal voltage operating window of the MPPT unit. Dual independent MPPT tracking captures the maximum power point for two PV arrays separately, effectively mitigating power mismatch and shading losses between module strings, unlocking the full power generation potential of PV arrays and boosting overall system utilization.

• Full-Scenario High Safety with Stable and Reliable Operation The core energy storage unit adopts high-safety lithium iron phosphate cells with high temperature resistance, low thermal runaway risk, no open flame upon puncture and long cycle life, suitable for civil and complex outdoor working conditions. The energy storage all-in-one machine integrates comprehensive electrical protection against overvoltage, undervoltage, overload, short circuit, overtemperature and overcurrent. PV modules are resistant to sand, hail and extreme temperatures, enabling the whole system to operate safely and stably in harsh environments without hidden power hazards.

• Mobile Design for Flexible Multi-Scenario Application Different from traditional fixed PV-storage equipment, the energy storage host is equipped with silent universal casters for lightweight free movement. No fixed foundation installation is required, enabling convenient deployment and relocation. It can serve as a fixed rooftop PV-storage system for self-consumption and emergency backup at home, or be quickly transported for outdoor operations, street vendor stalls, farm breeding, field construction and emergency rescue. The multi-purpose design greatly improves equipment utilization and scenario compatibility.

• Intelligent Control for Effortless Operation A high-definition LCD smart display visualizes core operating data including PV power generation, stored energy, charge-discharge status, fault codes and output power for full transparency. The system supports automatic switching between PV and mains power sources, intelligently identifying the optimal charging source and matching load power demand without manual intervention. Built-in remote communication monitoring enables real-time data viewing, equipment status tracking and program upgrades, delivering high intelligence and simple operation for ordinary household users.

• Extra-Long Service Life with Excellent Investment Economy PV modules adopt low-attenuation technology for stable power generation over 25 years, while the full energy storage all-in-one machine serves over 10 years with extremely low post-installation operation and maintenance costs. Supported by three revenue streams — self-consumption, surplus power grid feed-in and peak-valley price arbitrage, the system effectively reduces household mains power purchases, accelerates investment payback and generates prominent long-term economic benefits, making it a cost-effective civil distributed PV-storage solution.

Household Residential Scenario (Core Application)

The system realizes self-sufficiency for daily household power consumption and drastically reduces reliance on municipal mains power. Users can arbitrage via peak-valley electricity price differences to slash monthly household electricity bills. During community blackouts or line maintenance, it acts as an emergency backup power supply to sustain critical loads including refrigerators, lighting, surveillance cameras and smart home devices, comprehensively enhancing the stability and safety of household power usage.

Outdoor Operation Scenario

It serves as an independent power source for field exploration, outdoor construction, equipment commissioning and field maintenance, fully replacing traditional diesel generators with high fuel consumption, loud noise and pollution. Powered by continuous solar charging without fuel supply, it delivers zero emissions, low noise, minimal regular maintenance and low operating costs, meeting sustained power demands for all off-grid outdoor work scenarios.

Commercial Operation Scenario

Widely applied to night market stalls, outdoor exhibitions, square events and mobile commercial businesses, it provides stable pure 220V AC power for lighting, audio equipment, freezers, food processing machines and live streaming gear. The unit can be flexibly moved, rapidly deployed and reused repeatedly, eliminating safety risks and extra costs from temporary power connections and greatly boosting convenience for outdoor commercial operations.

Off-Grid Power-Free Scenario

For remote villages, mountain farms, breeding bases and wilderness camps without mains power or with unstable grid supply, the system can build an independent off-grid PV-storage power supply system to deliver uninterrupted stable power 24/7. It thoroughly solves power shortages and unstable voltage issues, with simpler maintenance and far lower long-term operating costs than conventional power generation equipment.