First, let’s take a look at the battery module box. The 314Ah batteries inside the battery module box are grouped in the form of 1P104S. The 1P26S batteries inside are connected in series and parallel to form a battery module, which is divided into 4 battery modules. There is a fused MSD mounted on the front panel. Installing a fuse can provide short-circuit protection for the batteries in the package. The series voltage of 104 batteries is a bit high, and installing an MSD can play an internal isolation/disconnection role. The cabinet adopts a shell-cooled integrated lower cabinet and upper cover design. The battery cluster is composed of 4 battery module boxes. There are 9 slots in a row in the container. The upper and lower battery module boxes form a cluster. The battery clusters are connected in series to form a group 1P416S. There are two configuration designs for battery cluster energy output; one is a switch box and the other is an embedded string PCS. Let’s talk about the first switch box solution first. Looking at the DC switch box solution from the promotional materials provided by Sungrow, the switch box seems to use liquid cooling for heat dissipation. It may be a mistake. The cost of liquid cooling for the switch box is a bit high. , this is not necessary. From another picture, it seems that the switch box should dissipate heat naturally. There are two DC input interfaces on the front panel of the switch box, which combine the two clusters of batteries into one output. The second string PCS solution, the picture below shows Sungrow’s 210kW string PCS using liquid cooling. Each 210kW PCS is connected to a cluster of 417.99kWh batteries. Two positive and negative pole connections come out of each of the two clusters of batteries. They are first connected to the DC sides of the two PCSs through the junction box. The DC side of the junction box is equipped with a fuse. level short circuit protection. The two AC lines from the two PCS are combined into one output in the junction box. The picture below shows the installation method of the junction box and two PCSs. The three are arranged in front and back and enter the cabin in sequence. This is a 4-hour energy storage system configuration plan. One of the PCSs can be removed and the DC lines can be connected to two points in one connection in the junction box. A 210kW PCS is connected to two clusters of 417.99kWh batteries. This design allows for flexible matching. A liquid-cooled unit is housed in the electrical compartment. This liquid cooling unit is customized and developed by Sungrow from a supplier. The liquid cooling unit cools and dissipates heat for the battery and PCS. It is different from the 5MWh energy storage battery container liquid cooling system of other manufacturers and needs to be considered. Liquid cooling for PCS. The design of the fire protection system adopts two options: gas fire protection and water fire protection. Gas firefighting is a cabin-level submerged fi...

China Energy Storage Network News: Facing the challenges of energy change, technological innovation and the ability to adapt to the local policy environment will be crucial to the company's sustainable development. China Energy Storage Network learned that at 10:15 pm on May 4th, Beijing time, the 2024 Berkshire Hathaway Annual Shareholders Meeting was grandly held in the American town of Omaha. This shareholder meeting attracted tens of thousands of investors from all over the world, and important figures such as Bill Gates and Apple CEO Tim Cook also attended the event. Buffett speaks at the 2024 shareholder meeting The entire shareholder meeting demonstrated the importance Buffett and his successor Abel attach to energy storage and battery technology, as well as their long-term plans in the field of renewable energy. Buffett said that Berkshire Hathaway must ensure that users have the possibility of lighting every day and have the hope of using lights. Fossils were once the oldest energy source. In terms of power generation, there are now issues to consider. It's energy storage. Abel pointed out that current energy storage batteries may only have four hours of power, and there are still economic challenges that require continuous advancement in technology. Although renewable energy has great prospects, continuous improvement of technology is key to ensuring its reliability and economy. Abel believes that investors should find a balance between technological innovation and traditional energy sources to ensure a stable and reliable power supply to customers. He particularly emphasized that policies, regulations, and regulatory requirements vary from region to region, so local environmental and policy factors must be fully considered when making energy investments to ensure the stability and sustainability of the business. The speeches by Buffett and Abel also sent an important signal: in the face of the challenges of energy change, technological innovation and the ability to adapt to the local policy environment will be crucial to the company's sustainable development. In fact, it is not sudden that Buffett and Abel are optimistic about energy storage. Tesla's first-quarter financial report released on April 24, Beijing time, showed that the company's total revenue fell by 9% in the first quarter, and its net profit fell sharply by 55%. However, its energy production and storage jumped to Tesla's profit margin. Top business. Specifically, in the first quarter of this year, Tesla's energy storage deployment continued to increase, reaching 4.1 GWh, breaking the previous record. In the first quarter, energy generation and storage revenue and gross profit hit record highs: revenue increased 7% year-over-year and gross profit increased 140% year-over-year. Musk previously stated in the fourth quarter 2023 earnings call that Tesla’s energy storage business will grow much faster than its electric vehicle business. Its first quarter financial report dat...

Solar and Storage Live Philippines 2024 20 May 2024 - 21 May 2024 SWT-POWER BOOTH: NO.2-E01 SMX Convention Center Manila, Pasay City, Metro Manila, Philippines, Manila, Philippines

On-grid power generation system It consists of components, grid-connected inverter, photovoltaic meter, load, two-way meter, grid-connected cabinet and power grid. The direct current generated by sunlight is converted into alternating current through the inverter, and then supplied to the load and connected to the grid. It can be directly used for household loads, and excess electricity can be sold into the grid. However, grid-connected inverters generally have a two-pole structure of boost and inverter. Off-grid power generation system It consists of photovoltaic modules, solar controllers, inverters, batteries, loads, etc. It does not rely on the power grid and operates independently. It is generally used in remote areas, areas without electricity, islands, communication base stations and street lights. When there is light, the solar energy is converted into electrical energy, and the integrated solar controller supplies power to the load and charges the battery; when there is no light, the battery power can be used to power the AC load through the inverter. The cost of its battery accounts for 30%-50% of the off-grid power generation system. Off-grid inverters generally have a four-level structure of controller, boost, inverter and isolation. Hybrid energy storage system It is composed of photovoltaic modules, solar and off-grid all-in-one machine, battery, load, etc. It is widely used in scenarios where there are frequent power outages or when photovoltaic power cannot be used for self-use and is not available for the grid. The price of self-consumption electricity is more expensive than the grid electricity price, and the peak electricity price is more expensive than the trough electricity price. The photovoltaic array converts solar energy into electrical energy when there is light, and the solar controller and inverter all-in-one machine supplies power to the load and charges the battery at the same time; when there is no light, the battery supplies power to the solar controller and inverter all-in-one machine. Then power the AC load function. Dual mode switching to ensure power supply needs. The photovoltaic on-grid system relies on the power grid and adopts the working mode of "self-use for self-use and grid-connection of surplus electricity" or "full grid-connection", while the off-grid system does not rely on the power grid and relies on "storage and use at the same time" or "store first and then use". working mode. From a comprehensive perspective of composition, cost, and efficiency, the cost of photovoltaic off-grid systems is relatively high, and the surplus electricity cannot be stored. Therefore, it is highly practical in areas without electricity or areas with frequent power outages.