1. Energy recovery system for energy storage power supply products
Energy storage power products will generate a certain amount of surplus electricity during the charging and discharging process. If these surplus electricity cannot be effectively utilized, it will cause a lot of resource waste. To solve this problem, the energy recovery system of the energy storage power supply product studied in this article can achieve maximum utilization of energy by storing and recovering surplus electricity. Specifically, when the energy storage power supply generates surplus electricity during the discharge process, the system will automatically start and store the surplus electricity; When charging is required, the remaining electricity stored in it can be released through the system for charging.
2. Operation mode of energy recovery system for energy storage power supply products
The core of energy storage power products is their efficient energy storage and recovery system. By optimizing the operation mode of the system, more efficient, stable, and reliable usage effects can be achieved. For energy storage power products, different battery types require different system control methods and need to be balanced according to actual needs. The charge and discharge control system is crucial for ensuring stability and safety during storage and release processes. During the charging process, it is necessary to implement reasonable charging control based on the type and state of the battery to avoid overcharging or discharging. During the discharge process, it is necessary to carry out reasonable discharge control according to the load demand to ensure that the energy storage power supply product can provide stable power supply. For the energy recovery system of energy storage power products, the following points need to be noted. Firstly, in the recycling process, it is necessary to consider the impact of internal system losses and external environmental factors on the recycling efficiency. Secondly, after recycling, energy needs to be stored and utilized reasonably in the next use. At the same time, it is also necessary to consider the balance between system operational efficiency and security.
3. Factors affecting energy recovery systems
(1) The selection of grid connected inverters is one of the most critical factors affecting the performance of energy recovery systems for energy storage power supply products. The common grid connected inverter architectures on the market currently include high-frequency transformers, traditional power frequency transformers, etc. Choosing the appropriate grid connected inverter can effectively improve conversion efficiency.
(2) Control strategy is one of the important factors affecting the performance of energy recovery systems in energy storage power products. The commonly used control strategies currently include maximum power tracking control, maximum efficiency control, etc. Different control strategies are suitable for different scenarios, and selecting the appropriate control strategy can improve energy recovery efficiency.
(3) The heat dissipation system of the energy recovery system in energy storage power supply products is one of the important factors affecting product performance. Poor heat dissipation can lead to excessively high temperatures, thereby reducing product lifespan and performance. Therefore, designing a reasonable and efficient heat dissipation system can effectively improve product performance. There are also some other factors, such as circuit design, component selection, etc., that can affect the performance of energy recovery systems in energy storage power products.
4. Design of energy recovery system for energy storage power supply products
4.1 Energy recovery system benefits of energy storage power supply products
The energy recovery system in energy storage power products refers to the process of converting some useless or surplus electricity into renewable power equipment during storage and release. Through this approach, not only can energy consumption be reduced, but the impact on the environment can also be reduced. Firstly, in practical applications, the energy recovery system in energy storage power products can greatly improve the efficiency of the entire system. During the charging and discharging process, by recovering some useless or remaining electricity and reusing it, the energy utilization rate of the entire system can be improved without affecting normal use. Secondly, by recycling some of the unused or surplus electricity and reusing it, it is possible to reduce reliance on traditional power supply methods, thereby lowering the cost of the entire system. Finally, the energy recovery system in energy storage power products can also have a positive impact on the environment. In traditional power supply methods, a large amount of energy is wasted. Through the energy recovery system in energy storage power products, these useless or surplus electricity can be effectively utilized, thereby reducing carbon emissions and reducing pollution and damage to the environment.
4.2 Implementation of Energy Recovery System for Energy Storage Power Supply Products
The system controls the output of the AC/DC module and the inverter voltage for energy recovery and grid connection; Based on the analysis and research above, the functions of the energy recovery system for energy storage power products (see Figure 1) include the following points.
(1) Management of AC energy-saving load modules. Under the premise of safe and stable operation when the AC energy-saving load module is connected and discharged, the output voltage during its charging and discharging process is more stable and reliable to supply to the intelligent grid connected inverter, making the energy-saving control energy recovery of the system simpler and more effective, and easy to achieve.
(2) Management of DC energy-saving load modules. After the DC energy-saving load module is connected to the power supply, the module adjustment controller can make corresponding output voltage adjustment measures according to the changes in load, to ensure the voltage stability of the intelligent grid connected inverter and facilitate the implementation of energy-saving control energy recovery.
(3) Intelligent grid connected inverter is a special type of inverter that adopts a full high-frequency isolation design to ensure the safety between the battery and the power grid/load; The full digital control of DSP+CPLD, with multiple levels of software and hardware overcurrent, overvoltage, and overheating protection, is safe and reliable; Dual DSP design, stable and reliable performance. Intelligent grid connected inverters can convert direct current into alternating current, and their output alternating current can be synchronized with the frequency and phase of the mains power, so the output alternating current can return to the mains power.
(4) Selection of auxiliary equipment. To improve the reliability and flexibility of the system, it is necessary to choose accessories with superior performance, such as AC transformers, module power supplies, connecting wires, system computers, etc.
4.3 AC energy-saving load module
The energy-saving load module for communication is a new type of power regulation equipment that can effectively reduce power consumption and improve grid efficiency. This module mainly achieves energy-saving effects by dynamically adjusting the load. The communication energy-saving load module monitors and analyzes parameters such as voltage and current in the circuit, calculates the power demand of the load in real time, and dynamically adjusts the output power according to the demand. Minimize unnecessary energy consumption while ensuring power supply stability. This module has good stability and reliability, which can effectively ensure power supply quality and equipment safety. Remote monitoring and control can be achieved through intelligent management systems, achieving more convenient, fast, and accurate management methods.
4.4 DC energy-saving load module
DC energy-saving load module is an intelligent electronic component that can achieve precise control and adjustment of DC circuits through built-in microprocessors. When the DC power is input into the load module, the module will automatically adjust the output current and voltage according to the preset parameters to achieve the best power conversion efficiency. At the same time, the module also has protection functions such as overvoltage, overcurrent, and overheating, which can effectively protect energy storage power products from damage. The DC energy-saving load module adopts advanced power conversion technology, which can convert input power energy into optimal output power, thereby achieving efficient energy utilization and reducing energy consumption.
This module is equipped with high-precision current and voltage detection chips, which can achieve precise control and adjustment of DC circuits, thereby improving the stability and reliability of the circuit. This module can achieve parameter setting and adjustment through knobs or buttons, and can also be remotely monitored and controlled through an intelligent management system according to actual needs, setting output current and voltage parameters, and ensuring correct parameter settings.
4.5 Bidirectional intelligent grid connected inverter
Bidirectional grid connected inverters have two operating modes: rectification and inversion. In rectification mode, the grid charges the energy storage products, while in inverter mode, the electricity from the energy storage products is integrated into the grid. It is a device that can convert direct current into alternating current and inject it into the public power grid. At the same time, when the public power grid malfunctions or loses power, it can also convert the DC stored in the backup battery into AC power for energy storage products to use. Bidirectional grid connected inverters have several advantages, including high efficiency, high stability, and safety. During the conversion process, bidirectional grid connected inverters can minimize energy loss and improve energy utilization efficiency. The bidirectional grid connected inverter has a high degree of stability and reliability. It can automatically detect the voltage and frequency of the power grid, and adjust it according to the actual situation to ensure that the output AC power meets the standards. The bidirectional grid connected inverter has multiple protection measures, such as overload protection, short circuit protection, overvoltage protection, etc., which can effectively prevent equipment damage or personal injury. When selecting a bidirectional grid connected inverter, it is necessary to choose the appropriate power level based on actual needs. If you only want to inject a portion of the electricity into the public grid, you can choose a smaller power device.
4.6 Energy Storage Power Supply Product Energy Recovery System Parameter Setting
Due to the high energy density, high power, and small size of the energy storage system (see Figure 2). Therefore, in the design, it is necessary to fully consider the following characteristics.
(1) Capacity: The capacity of energy storage systems is limited and is mainly estimated based on their maximum output power. When the operating current of energy storage equipment exceeds its rated working current, corresponding protective measures should be taken to prevent serious accidents from occurring; When the stored voltage is less than a certain value, it should be allowed to charge or discharge to ensure continuous power supply under normal load.
(2) Temperature: In the entire system, it has a significant impact on changes in operating conditions, so there are also high requirements for controlling operating conditions; For power electronic devices, it is necessary to meet the performance indicators of steady-state and thermal stability.
(3) Load: As the charging and discharging process of the battery is related to the grid connection, it is necessary to fully utilize the charging and discharging capacity of the battery to withstand greater pressure and corona. At the same time, it is also important to note that electric arcs should not be generated directly to prevent ignition and damage. Choose the appropriate battery type, capacity, charging and discharging rate, etc. When selecting these parameters, it is necessary to consider the actual usage of energy storage power products and adjust them according to their characteristics. In addition, it is necessary to adjust parameters to improve system efficiency. Specifically, this includes controlling the operating status of the system by controlling the charging and discharging rate, adjusting the charging and discharging cycle, and other methods; Further improve system performance through reasonable layout of battery packs, optimization of circuit design, and other methods.
5. Conclusion
In summary, the reliability evaluation system of energy storage power supply products is the key to ensuring the implementation of energy recovery technology. By adopting high-precision battery management technology, data analysis algorithms, and safety protection measures, it is possible to ensure the efficient operation of energy storage power products in various situations and provide backup power for users. With the rapid development of renewable energy technology, the demand for energy storage power products will continue to increase, and energy recovery technology will also become an increasingly important field.