——Shanghai Railway Station Roof Solar Energy Conversion Project
We are proud to announce that the Shanghai Songjiang Station Solar + Storage Project, invested and built by Litharv New Energy, will soon be fully operational in 2025! 🚄☀️
This landmark project marks China’s first newly built low-carbon high-speed rail station, setting a new standard for sustainable infrastructure. Once connected to the grid, it will:
⚡ Generate 6 million kWh annually
🌍 Reduce carbon emissions by over 5 million tons
🏙 Support Shanghai’s vision for a Smart, Cultural, and Green Songjiang
As we push forward in the transition to clean energy, Litharv New Energy remains committed to innovation and sustainability! ♻️💚
Table of Contents
Summary of application technology of solar energy conversion into energy storage battery
The conversion between photovoltaic (PV) technology and energy storage batteries involves two main areas: photovoltaic power generation (using solar energy to generate electricity) and energy storage systems (typically involving batteries for storage). Below is an explanation of the basic principles and technological applications of the conversion between photovoltaic power generation and energy storage batteries:
1. Photovoltaic Power Generation Principle:
Photovoltaic power generation technology converts solar energy into direct current (DC) electricity through photovoltaic panels, typically made from silicon-based solar cells. The semiconductor material (such as silicon) in the photovoltaic cells absorbs sunlight, exciting electrons and generating an electric current. When sunlight strikes the solar panels, electrons are excited and flow through the circuit, generating an electric current.
2. Energy Storage Battery Principle:
Energy storage batteries, such as lithium-ion batteries, store electrical energy using electrochemical reactions. The battery typically consists of a positive electrode, negative electrode, and electrolyte. During charging, electrical energy drives chemical reactions that store energy in the battery, while discharging releases the stored energy through a reverse reaction.
3. The Conversion Process Between Photovoltaics and Energy Storage Batteries:
The electricity generated by the photovoltaic system can be combined with energy storage batteries in the following steps:
(1) Photovoltaic Power Generation:
Photovoltaic panels convert sunlight into direct current (DC) electricity. This generated electrical power is not directly usable by household or industrial electricity grids.
(2) DC to AC Conversion:
Since most households and commercial facilities use alternating current (AC), the photovoltaic system generally requires an inverter to convert the direct current (DC) into alternating current (AC). This process is called the “inversion” process.
(3) Energy Storage:
Excess electrical power (especially from abundant sunlight during the day) is stored in energy storage batteries (such as lithium batteries) through charging devices. The battery then manages the stored energy, releasing it when needed.
(4) Battery Power Supply:
When sunlight is insufficient, or at night, the stored energy can be supplied to households or industrial devices via the inverter, ensuring a continuous power supply.
(5) Inverter and Charge Controller:
Inverters not only convert DC to AC but are also equipped with Maximum Power Point Tracking (MPPT) technology to ensure the photovoltaic system operates at maximum power output under varying light conditions. Additionally, charge controllers manage the charging and discharging of the battery, ensuring the battery operates within an optimal range to extend its lifespan.
4. Technological Applications:
- Off-grid Photovoltaic Systems: In areas without grid access, photovoltaic power generation and energy storage batteries can form a completely independent power supply system, providing energy for remote areas, homes, shops, or emergency facilities.
- Grid-connected Photovoltaic Systems: When connected to the grid, the electricity generated by photovoltaic panels is first used by local loads, and any excess electricity can either be stored or sold to the grid. Energy storage batteries act as a buffer, providing additional power during peak grid demand.
- Smart Energy Storage: With the rise of smart grids, the control of photovoltaic systems and energy storage batteries can enable more intelligent energy management, such as automatically adjusting battery charging and discharging times and selecting the most economical use of energy storage.
- Microgrid Technology: By integrating photovoltaic power generation and energy storage batteries, microgrid systems can be built. These systems can operate independently within localized areas and maintain power supply even during grid failures.
5. Ongoing Optimizations and Challenges:
- Efficiency Improvements: As technology advances, the conversion efficiency of photovoltaic cells continues to improve, and the energy density and charging speed of storage batteries are also being optimized.
- Cost Reduction: The cost of photovoltaic and energy storage technologies has been steadily decreasing, making these systems more economically attractive and promoting their widespread adoption in residential and commercial sectors.
- Energy Management Technology: Smart scheduling of photovoltaic and energy storage systems to reduce energy wastage and improve efficiency is an important research direction for the future.
In summary, the conversion between photovoltaic power generation and energy storage batteries is a crucial component in achieving the widespread adoption of clean energy. Through more efficient conversion technologies and intelligent management systems, photovoltaic and energy storage systems can provide strong support for the global energy transition.
