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19
2024-07
Understand the composition of energy storage system in a short time
In layman's terms, the role of a battery energy storage system is to store electrical energy and release it when needed. Large-scale energy storage systems can serve the power grid, which is called grid-side energy storage. For example, when power generation is greater than power consumption, it is first stored and then released when power consumption is tight, which is commonly known as "peak shifting and valley filling." Why PCS is neededBatteries generate electricity through chemical reactions, which produce direct current with a constant current direction, while the power grid transmits alternating current with a direction that changes at a certain frequency. Therefore, in the scenario of grid-side energy storage, charging and discharging batteries requires a conversion device, namely PCS, which can rectify the AC power of the grid into the DC power required by the battery when charging the battery, and can invert the DC power of the battery into the AC power required by the grid when discharging. Why BMS is neededSince the electric energy generated by the battery is through chemical reactions, we need to control the speed and stability of the reaction to ensure that the reaction can proceed stably and continuously. Therefore, it is necessary to manage and monitor the voltage, current, temperature, etc. of the battery. In addition, the battery cannot be overcharged or discharged, otherwise it is easy to explode and damage, so it is necessary to know the remaining power (SoC) of the battery. The system needs to monitor the Soc at all times to ensure that the battery is charged and discharged within a safe range, and it is necessary to evaluate the battery's state of health (SoH) to know when the battery should be maintained or replaced. In addition, the power and storage capacity of a single battery are limited. Large-scale energy storage requires single batteries to be connected in series or in parallel to provide the corresponding power and capacity. However, the SoC of each battery may be different. We call the low SoC a lagging battery. The capacity of the system will be restricted by the lagging battery, which is called the "barrel effect". In order to improve the working efficiency of the system, it is best to keep the consistency of the SoC of each battery as much as possible when charging and discharging the modules or monomers that make up the battery pack, which is the so-called "balance". This requires a measurement and control system, usually called a battery management system (BMS) Why EMS is neededAs the scale of batteries increases, people hope to remotely monitor the status of batteries, PCS and other electrical equipment, and also hope to remotely control them, including controlling when to charge and discharge batteries according to certain strategies. This requires a system similar to the human brain, which can analyze the collected data and make corresponding decisions according to certain strategies. This system is the energy management system (EMS). Therefore, taking lithium batteries as an example, the composition of a lithium battery energy storage system mainly includes battery packs, PCS, BMS, EMS and other electrical equipment. Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems;Our battery systems are warmly welcomed in over 30 countries applied on electric trucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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20
2024-06
CATL and BYD compete for supercharging, and power batteries will enter the 6C era.
CATL plans to launch the second-generation product of Kirin Battery in the second half of the year - a power battery with a charging rate of 6C. At the same time, BYD, which has not released a new battery product for three years, is also considering launching fast charging battery products: sources close to BYD have revealed that BYD's second-generation blade battery may be launched in the second half of this year, and BYD's 6C battery is also under development."C" refers to the charging rate. In theory, the power battery supports a "few C" charging rate, which means it can be fully charged within a few minutes of an hour. In the actual charging process, the peak rate is generally used as the standard - the maximum peak rate during the charging process can reach "several C", which is called "several C supercharging". From the launch of 3C in 2022 to the launch of 4C and 5C in 2023, electric vehicles are now entering the era of 6C. This means that manufacturers not only need to start improving at the level of battery cell materials, but also need to upgrade at the level of battery systems. In terms of materials, fast charging batteries not only need to be paired with fast charging graphite, electrolytes suitable for fast charging, separators and other materials, but also can mix and match basic lithium iron materials with NMC materials to balance performance. We have currently launched pure iron lithium 6C batteries and are in mass production! Pure iron lithium batteries are relatively safer and more stable, and also have better performance.Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electric trucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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14
2024-06
Application case：51.2V 206Ah 10.547Kwh
Product images： Specification: Product Introduction: Customized for last mile delivery. Extra long range, ensuring worry free last mile delivery. The benefits of our batteries don’t stop at efficiency; they also offer fast charging, zero maintenance, a long lifespan, light weight, eco-friendly, safety, and stability in all weather conditions. We also offer custom-tailored solutions and fast transportation. Company Introduction: Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electricTrucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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11
2024-06
Application case：51.2V 420Ah 21.5Kwh
Product images： Specification: Product Introduction: This battery system is a customized product with two battery boxes and the PDU is integrated into one of the boxes. We have saved space on PDU, which is more perfect for customers with limited space. Bulk sales to over 30 countries.Company Introduction: Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electric trucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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31
2024-05
Application case：76.8V 160Ah 12.28Kwh & 76.8V 280Ah 21.50Kwh
Product images：Specification: Product Introduction: This battery pack is integrated with 4 modules and is a customized battery system for light electric vehicles. This battery pack has undergone rigorous performance testing by customers and performs well, which is highly favored by customers. Company Introduction: Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electricTrucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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29
2024-05
Understanding the various parameters of lithium batteries: Easy selection of lithium batteries
Lithium batteries have been widely used in various fields. From smartphones, tablets to electric vehicles, lithium batteries are an indispensable source of energy. To ensure the stable and safe operation of lithium batteries, we need to understand and pay attention to their basic parameters. These parameters not only reflect the performance of lithium batteries, but also determine their applicability and service life. Here we will elaborate on the basic parameters of lithium batteries, providing a reference for your better understanding and use of lithium batteries. 1. Detailed explanation of basic parameters of lithium batteriesl Rated capacityRated capacity refers to the maximum amount of electricity that a lithium battery can provide under specific conditions, usually measured in milliampere hours (mAh) or ampere hours (Ah). This parameter reflects the battery's ability to store electricity and determines the length of time the battery can support device operation. When choosing a lithium battery, the required capacity should be determined based on the device's power consumption and expected usage time. l Rated voltageRated voltage refers to the voltage of a lithium battery at full charge, usually measured in volts (V). The rated voltage of lithium batteries is generally 3.7V or 4.2V, and different models of lithium batteries may vary. Understanding the rated voltage of the battery helps us choose the appropriate charger and electrical equipment to ensure that the battery can function properly. l Internal resistanceInternal resistance refers to the resistance inside a lithium battery, which affects the charging and discharging efficiency and heating situation of the battery. The smaller the internal resistance, the higher the charging and discharging efficiency of the battery, and the smaller the heat generated. Therefore, when choosing lithium batteries, it is advisable to choose products with lower internal resistance as much as possible. l Cycle lifeCycle life refers to the number of times a lithium battery can undergo charging and discharging cycles. The cycle life of lithium batteries is related to their structure and materials, generally ranging from hundreds to thousands of cycles. Understanding the cycle life of batteries helps us to arrange the usage and replacement cycle of batteries reasonably, and avoid excessive battery loss. l Self discharge rateSelf discharge rate refers to the rate at which a lithium battery self discharges when not in use, usually expressed as a percentage per month. The self discharge rate of lithium batteries is related to factors such as materials, manufacturing processes, and storage conditions. Understanding the self discharge rate of batteries helps us to arrange their storage and usage time reasonably, avoiding the loss of battery power due to prolonged inactivity. l Working temperature rangeThe working temperature range refers to the temperature range within which lithium batteries operate normally. Lithium batteries are sensitive to temperature, and high or low temperatures can affect their performance and lifespan. Therefore, when using lithium batteries, it is important to ensure that they operate within a suitable temperature range to avoid battery damage or safety accidents. l Charging timeCharging time refers to the time required for a lithium battery to go from empty to full, usually measured in hours. The charging time is influenced by various factors such as the power of the charger, the capacity of the battery, and the charging method. Understanding the charging time of batteries helps us to plan our charging schedule reasonably and avoid situations of overcharging or undercharging. l Discharge depthDischarge depth refers to the ratio of the maximum capacity reached by a lithium battery during discharge to its rated capacity. The deeper the discharge depth, the shorter the battery life may be. Therefore, when using lithium batteries, deep discharge should be avoided to extend the battery's service life. l Termination voltageThe termination voltage refers to the voltage threshold that lithium batteries should not exceed during charging and discharging. When charging, the battery voltage should not exceed the maximum termination voltage; When discharging, the battery voltage should not be lower than the minimum termination voltage. Exceeding these thresholds may cause damage to the battery, affecting its performance and lifespan. Therefore, when using lithium batteries, it is important to ensure that the charging and discharging processes are carried out within the appropriate voltage range. l Energy densityEnergy density refers to the amount of energy that a lithium battery can store per unit volume or weight, typically measured in watt hours per kilogram (Wh/kg) or watt hours per liter (Wh/L). The higher the energy density, the more energy the battery can store in the same volume or weight, which is particularly important for electronic devices that require long working hours or are convenient to carry. 2. How to choose a suitable lithium battery When choosing a lithium battery, we need to comprehensively consider the above parameters. Firstly, determine the required rated capacity based on the power consumption and expected usage time of the device; Secondly, ensure that the rated voltage, internal resistance, and cycle life of the selected lithium battery meet the equipment requirements; At the same time, attention should also be paid to the self discharge rate, operating temperature range, and charging time of lithium batteries to ensure their stable and safe operation. As a professional battery supplier, Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electricTrucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products. 3. Conclusion The basic parameters of lithium batteries cover multiple aspects, which not only reflect the performance characteristics of lithium batteries, but also determine their applicability and service life. When selecting and using lithium batteries, we should fully understand these parameters and make reasonable combinations and choices based on actual needs. At the same time, we should also follow the correct charging and discharging methods to avoid damage to the battery caused by adverse factors such as overcharging and discharging and high temperatures. By using lithium batteries scientifically and reasonably, we can ensure that they provide stable and safe power support for our equipment.
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23
2024-05
Application case：76.8V 420Ah 32.26Kwh
Product images：Specification: Product Introduction: This battery system is a customized product with two battery boxes and one PDU to maximize the use of space on the customer's vehicle and balance the weight of the vehicle. It’s fully certificated and in mass delivery; Company Introduction: Be Power is committed to providing customers with high-quality and customized solutions；We are the number one Chinese battery supplier delivered to automotive OEM in Brazil.We offered battery for over 800K set HESS systems; Our battery systems are warmly welcomed in over 30 countries applied on electricTrucks，electric light vehicles，electric UTV, electric sweepers, container energy storage systems, 215Kwh commercial and industrial energy storage systems etc. With top-notch technical team in China we are providing the toughest technical and highest level safety products.
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15
2024-05
Our super 100Ah cells have achieved significant performance improvements!
Recently, our 100Ah battery cells have achieved breakthroughs in charge/discharge rate and low-temperature performance. In terms of charging and discharging rate, the original 1C/3C 3000 cycles have been increased to the current 3C/3C 3000 cycles. The maximum charge discharge rate has been increased from 3C/4C to 4C/6C！It can still discharge 80% of its power in an environment of -30℃, this makes it very suitable for use in high latitude areas without the need for additional heating systems,。 It is also suitable for battery systems on hydrogen fuel cells, power sources for hybrid trucks, peak shaving energy storage systems, go karts, and other fields that have mandatory requirements for high magnification, high power, and ultra-low temperature.As a professional provider of energy storage systems and power battery systems, Bepower has a technical team with over ten years of experience in lithium battery technology, leading technology routes, and project implementation experience. For many years, Bepower's products have mainly focused on power and energy storage.
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08
2024-05
Eight major differences between air cooling and liquid cooling in energy storage systems
1.Different cooling principlesAir cooling is the process of removing heat through the flow of air, which lowers the surface temperature of the equipment. The advantages of air-cooled heat dissipation are simple structure and low cost, but its heat dissipation effect is greatly affected by factors such as environmental temperature and air circulation, and is not suitable for high-power and high-density equipment. Liquid cooling heat dissipation is the process of removing heat through liquid circulation, which lowers the internal temperature of the equipment. The advantages of liquid cooling are good heat dissipation effect and high stability, but its cost is high and it requires maintenance of the liquid circulation system.2. Different applicable scenarios Air cooling systems are suitable for energy storage systems of various scales and types, especially in outdoor environments with better applicability. It is currently the most widely used cooling technology, applied in industrial refrigeration, communication base stations, data centers, temperature control scenarios, etc., with relatively high technological maturity and reliability. Especially in low to medium power scenarios, air cooling remains the mainstream. Liquid cooling systems are also suitable for various scales and types of energy storage systems, especially for large-scale, high energy density energy storage projects. The advantages of battery packs are particularly evident in situations with high energy density, fast charging and discharging speeds, and large environmental temperature changes. 3. Different design complexityThe design of air-cooled energy storage systems is relatively simple, mainly involving the installation of heat dissipation fans and the design of air circulation paths. The core of air-cooled systems is the air conditioning and air ducts, which are used for cooling and exchanging heat; Liquid cooling design is usually more complex and requires consideration of issues such as the layout of the liquid circulation system, pump selection, coolant circulation, and maintenance. 4. Different heat dissipation effectsThe heat dissipation effect of air-cooled cooling is greatly affected by factors such as environmental temperature and air circulation, and generally cannot meet the heat dissipation needs of high-power equipment. The cooling effect of liquid cooling is better, which can effectively reduce the internal temperature of the equipment, improve the stability and lifespan of the equipment. 5. Different operating power consumptionThe composition of power consumption is different, and the main power consumption of air cooling is air conditioning+electrical compartment fan; The main power consumption of liquid cooling is the combination of liquid cooling units and electrical compartment fans (some manufacturers use whole machine liquid cooling). Under the same conditions and maintaining the same temperature, the power consumption of air cooling is higher than that of liquid cooling. 6. Different costs and maintenanceThe cost of air-cooled heat dissipation is relatively low and maintenance is simple. However, due to its limited heat dissipation effect, it may be necessary to increase the number of heat sinks or increase the fan speed to improve the heat dissipation effect, thereby increasing energy consumption and maintenance costs. The cost of liquid cooling is relatively high and requires maintenance of the liquid circulation system. However, due to its good heat dissipation effect and high stability, it can reduce equipment failure rate and maintenance costs. In the long run, its overall cost may be lower than that of air-cooled heat dissipation. 7. Different levels of noise and space occupancyThe noise generated by air-cooled cooling is relatively low and has a relatively small impact on the environment. But due to the need to install fans and heat sinks, it may take up some space. The noise generated by liquid cooling is relatively high and has a certain impact on the environment. However, due to its small radiator volume, it can effectively save space. In addition, liquid cooling can also reduce the impact of noise on the environment by optimizing the design and layout of the radiator. 8. Different safety and risk pointsThe safety of air-cooled heat dissipation is relatively high due to its simple structure and no risk of liquid leakage. But it is necessary to pay attention to the safety issues of the fan to prevent damage or overheating.The safety of liquid cooling is relatively low, and there are risks such as liquid leakage and corrosion. Therefore, the liquid cooling cooling system needs to use high-quality materials and strict sealing design to ensure safe operation. ConclusionAir cooling and liquid cooling are two commonly used heat dissipation methods in energy storage systems, each with its own advantages and disadvantages. When choosing a cooling method, it is necessary to comprehensively consider factors such as the actual power of the equipment, cooling requirements, and cost budget. With the development of technology, more efficient and low-cost new heat dissipation methods (such as the combination of air cooling and liquid cooling, immersion, etc.) may emerge in the future to provide guarantees for the stable operation of energy storage systems.
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23
2024-04
Multiple LFP marine batteries have obtained CCS certification.
Recently, multiple types of lithium iron phosphate marine batteries have successfully passed the type approval by CCS China Classification Society, and have been awarded the type approval certificate by CCS China Classification Society. This marks a new stage of industrial application for the company's multiple LFP marine batteries in the shipbuilding industry.CCS China Classification Society is one of the world's eight major classification societies and an official member of the International Association of Classification Societies. It is the only authoritative professional organization in China engaged in ship classification inspection business. CCS certification standards are comprehensive and strict, serving as the official passport for enterprises to enter the shipbuilding industry, offshore facilities, and related industries, with high professionalism and authority. Our marine lithium iron phosphate batteries, including 280Ah, 150Ah, 105Ah, 100Ah, 85Ah, and other products, meet international market standards in terms of performance stability, safety, and environmental adaptability, and can be used in the global shipbuilding market.Bepower Energy is always committed to creating high-quality lithium battery power system products that are extremely safe and reliable in performance, bringing the best product application experience to the green shipping industry and promoting the high-quality development of the new energy electric shipping industry. Promoting zero carbon shipping is a consensus for the future development of the global shipping industry. "Green ships" represented by battery powered ships are the current and future main research and application promotion directions. Bepower will fully leverage its technological and product advantages in the field of batteries, provide safe, reliable, and efficient battery product solutions for green shipping, and use clean energy ships to help promote green and sustainable development in society.
