Off-Grid Solar Power System With Battery
Off-grid solar power system with battery, is a form of off-grid photovoltaic power generation systems, can be configured with energy storage devices or without energy storage devices according to customer needs. In terms of configuration design, off-grid solar power system with battery are relatively flexible in configuration.
For areas without electricity or with unstable electricity, off-grid solar power system with battery are very practical. What are the components of an off-grid solar power system? The solar off-grid system is mainly composed of photovoltaic panels, inverter integrated machine (inverter and controller), battery, combiner box, and background monitoring system.
Below, the editor will introduce to you the components of the system.
1. Solar panels
Solar panels are used to produce electricity, main part of the solar power system, They are mainly divided into monocrystalline silicon solar panels and polycrystalline silicon panels. Under the same power, the same lighting conditions, and the same duration, the power generation of monocrystalline silicon solar panels is higher than Polycrystalline silicon solar panels, but monocrystalline silicon solar panels also cost more than polycrystalline silicon solar panels.
2. Combiner box
In the off-grid solar power system with battery, in order to reduce the connection between the photovoltaic modules and the inverter and reduce the line loss of the DC cable, a certain number of photovoltaic modules need to be connected in series or parallel on the photovoltaic module installation side. Then send it to the DC side of the inverter. At the same time, a DC lightning protection module is installed in the combiner box to protect the photovoltaic power station from lightning.
3. Photovoltaic control and inversion integrated machine
The photovoltaic control and inverter integrated machine is an electronic circuit that includes a photovoltaic controller and a photovoltaic inverter. It can realize photovoltaic maximum power point tracking and power generation through the photovoltaic controller, and combine the DC voltage of the solar panel and the DC voltage of the battery through the inverter. Voltage conversion into AC voltage to drive AC loads is a key component of the entire off-grid solar power system with battery.
Functions of photovoltaic control and inversion integrated machine:
The current that completes the DC/AC conversion is connected to the load output
Find the best operating point to optimize the power generation efficiency of off-grid solar power system.
4. Battery
The energy storage batteries of an off-grid solar power system with battery are generally divided into GEL batteries and lithium-ion batteries. The discharge output characteristics of lithium batteries are relatively stable. At the same time, lithium batteries are pollution-free and have high safety performance. In order to protect lithium batteries, we will install a battery management system(BMS) in the battery. Its role is to balance the current, equalize opening, short circuit protection, overcurrent protection, etc.
5. Backstage monitoring system
For large-scale off-grid solar power system with battery, a monitoring system is generally installed. The monitoring system realizes status monitoring and real-time control of all equipment in the off-grid solar power system, and remotely transmits real-time data to power dispatching. Including energy storage monitoring function, photovoltaic monitoring function, and environmental monitoring system.
This is the main component of off-grid solar energy system with battery. In fact, according to the different needs of users, the accessories we use when configuring the off-grid photovoltaic power generation system are also different. The off-grid photovoltaic power generation system is a customized product, so For specific product accessories, design solutions, etc., you can consult our staff.