Energy Storage Industry will Present Explosive Growth in Future 2-3 Years

     Nowadays, advanced energy storage technology has enabled the intermittent energy sources such as solar energy and wind energy become mainstream energy. Through storing solar energy and wind energy, the energy storage system could provide safe and reliable electricity for household, building or factory. It has influenced the distribution of power grid and will raise a revolution on power grid design in the coming future. With its efficient and environmental characteristics, energy storage is playing a critical role in the development of renewable energy.

    In the coming years, market demand for energy storage will keep rising. Under such condition, solar/wind power stations, distributed power supply systems, micro-grid power plants, and smart power grids will be increasingly widely applied in various areas. China’s energy storage industry is seeing tremendous development opportunities.

    As a leading industrial lead acid battery supplier in China, Sacred Sun also provides energy storage solutions such as intelligent street light, energy storage power plant, off-grid & micro-grid new energy power plant, and household solutions.

    For more information about our solutions, welcome to visit our official website.

Off-grid PV System

1. The Composition of Off-grid PV System

    Figure 1 is the schematic diagram of a typical off-grid PV system.

Figure 1. Composition of Off-grid PV System

2. Major Components of Off-grid PV System

   1). Solar-cell Array. It is the core component of the system, convert solar energy into electric energy. The solar cell modules are installed in series or in parallel in accordance with the requirements of different systems.

   2). Battery. Store the electric energy generated by solar-cell array so as to supply power at the following conditions: light deficient conditions, nights, or when load demand is higher than power supply of the array. The most widely applied batteries in PV systems are lead acid batteries.

   3). PV Controller. It is the core control section of the whole system, controlling the charge/discharge of batteries and the electrical power output of the array and battery pack. Currently, there are mainly two widely applied control modes: PWM and MPPT. The PWM has higher control efficiency but relatively lower utilization rate to solar modules; while MPPT has relatively lower control efficiency but higher utilization rate to solar modules. In most cases, PWM mode is applied in system with smaller power, and MPPT mode is applied in system with lager power, especially when system power is higher than KW level.

   4). Inverter. If AC Load is included in the system, inverter is needed to concert direct current from solar-cell array or battery pack into needed alternate current.

Sacred Sun has Broken Through Cost Predicament of Energy Storage System with Its Leading Technology

On May 10th, 2015, the 4th China International Energy Storage Station Congress (ESSC 2015) is held in Shenzhen, China. Shandong Sacred Sun Power Sources Co., Ltd. (hereinafter referred to as the "Sacred Sun") was invited to attend the congress, and was awarded the Best Supplier of energy storage batteries. Mr. Sui Yanbo, deputy General Manager of Sacred Sun, has delivered a keynote speech "Commercial Application Solutions of Energy Storage Systems with FCP Lead Carbon Batteries” at the congress.
    Sacred Sun's FCP lead carbon battery, which has imported related technology of Furukawa , could achieve more than 4200 cycles at 70% DOD. Provided that one day one cycle, battery service life could up to 10 years. The cost per kw h of energy storage battery (storage battery procurement costs divided by the capacity of the battery can be released in life) was reduced to about 0.5 Yuan, almost close to the pumped storage. In addition, the charge-discharge conversion efficiency of the battery could reach up to 87%, and the maximum efficiency of related energy storage system could reach 80%.

Sacred Sun has made its appearance at SNEC 2015

 On April 28-30, SNEC ninth (2015) International Solar Industry and Photovoltaic (Shanghai) Exhibition and Forum was held in Shanghai New International Expo Centre, more than 1,500 PV enterprises from home and abroad in more than 60 countries and regions has visited. As a leader in solutions for the energy storage system, Sacred Sun has made its appearance with a full range of new energy technology products, attracted many customers, experts and participants stopped to exchange.

    At the exhibition, Sacred Sun has showed a new energy storage product---FCP lead carbon battery, which could reach 4200 cycles at 70% DOD. This product will be widely used in large-capacity storage systems, to provide more competitive product solutions for the commercial development of new energy storage market. Sacred Sun has also exhibited other energy storage products, such as GFMJ series, OPzV tubular gel series, GFMU series, etc.

    Sacred Sun has also showed the sand table model of PV systems, which could intuitively show the customized PV energy storage system to the participants. The PV system could provide system solutions such as solar power, wind power, electric vehicle charging, distributed power generation, emergency power supply, wind and solar hybrid new energy communications base stations, centralized energy storage, etc.

Flow Battery

 Flow battery belongs to ordinary chemical battery. Its utilization rate of active materials is improved through storing positive electrolyte and negative electrolyte separately.

      Due to the limit of materials and the concentration of the electrolyte, the flow battery didn’t achieve high energy density in past years. It can be applied in energy storage power stations, but not available on vehicles.

     Recently, Dr. Yet-Ming Chiang, scientist of Massachusetts Institute of Technology, has invented a semi-solid lithium flow battery. He has made innovations on material and electrolyte concentration, which enables the battery to reach applicable level on energy density and power density. This battery is still in the laboratory stage.

    NanoFlowcell AG has launched an automobile with flow battery, which seems have reached very high energy density in accordance with its technical index. However, its facticity remains to be verified.

    Compared with previous hydrogen fuel battery and metal fuel battery, flow battery is more feasible. Once the laboratory technology enters into mass production period, it will change the electric vehicle industry dramatically. With flow battery, electric vehicle could run further, become cheaper, and charge faster (charge through power grid or replace electrolyte).

Horizontal Placement Plan of Carrier-Grade Battery

• As a newly developed battery, carrier-grade battery possesses brand new appearance design and structural design. To achieve better performance, horizontal placement is adopted in installation. Therefore, we have designed the following new battery rack to realize the fully horizontal placement of the carrier-grade battery.

  48V200/300 Battery Rack: simple, convenient, practical, economical, and space saving. The outgoing lines are on the same side of the battery rack, which is convenient to maintain.

  

  System Assembly Drawing

  

  Assembly Drawing of Battery Rack

  

  Partial Explosion Effect of the Battery Rack

  48V400~1000 Battery Rack: simple, convenient, practical, economical, and space saving. The outgoing lines are on the same side of the battery rack, which is convenient to maintain.

   

  System Assembly Drawing

  

  Explosion Effect of the Battery Rack

  Currently, the carrier-grade battery racks (include horizontal placement racks and vertical placement racks) have been widely applied in China Mobile, China Unicom, China Telecom and China Power, especially in the II level batteries of China Mobile. Customer feedback for our racks is quite favorable.

  Technical Difficulties in the Development of Battery Racks

  Entire-palletdesign for GFM-300 battery rack

  

  Special-shapedmaterials such as supporting plates and protect plates of GFM-500 need to beprocessed with special molds.

  

  Protect plates need to be kept away from the drop direction of leakage, and reinforced with insulation nails.