Overview

This document describes a Battery Management System (BMS) supporting both Lithium and Lead-acid batteries, designed for solar energy applications with multiple inverters operating in parallel.

Main Specifications

• Battery Compatibility: Supports Lithium and Lead-acid battery types.
• Inverter Configuration: Up to 9 inverters can be connected in parallel to increase system capacity.
• Maximum PV Power: The system supports a maximum photovoltaic (PV) input power of 9 kW.
• MPPT Voltage Range: Wide Maximum Power Point Tracking (MPPT) voltage range from 120 V to 500 V, allowing flexible solar panel configurations.
• Built-in Solar Charger: Integrated solar charger with feed-in capability to the electrical grid.
• Generator Compatibility: The system can operate in conjunction with a generator for backup power.
• Monitoring: Supports WiFi monitoring for remote system status and performance tracking.

System Components and Diagram

The system includes the following key components:

• Solar panels feeding into the BMS and inverters.
• Multiple inverters connected in parallel to handle higher loads.
• Home electrical loads powered by the system.
• Grid connection allowing feed-in and grid support.
• Backup generator integration for additional power supply.
• WiFi module enabling remote monitoring and control.

The system diagram illustrates the interconnection between solar panels, inverters, home loads, grid, and generator, highlighting the flow of energy and control signals.

Critical Features and Best Practices

• Ensure battery type compatibility when configuring the system to optimize performance and longevity.
• Utilize the wide MPPT voltage range to maximize solar energy harvesting under varying conditions.
• Leverage WiFi monitoring for proactive maintenance and system diagnostics.
• Parallel inverter setup allows scalable power capacity; ensure proper synchronization and load balancing.
• Backup generator integration provides reliability during low solar production or grid outages.