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Battery BMS Board

Lithium Battery BMS

Lifepo4 Battery BMS

Active Balancer BMS

Smart Active Balancer

Active Equalizer

5A Active Balancer

1A Active Balancer

Diode Module

Battery Repair Machine

Battery Accessories

High Current BMS

Energy Storage BMS

Different Application BMS

RV Energy Storage BMS

Home Storage BMS

EV Storage BMS

Truck Start BMS

Golf Carts BMS

Electric Tricycle BMS

Electric Vehicle BMS

Electric Forklift BMS

Electric Scooter BMS

Charging Station BMS

Heavy-duty Vehicle Smart Active Balancer BMS
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ABOUT US
China Shenzhen Juyi Science And Trade Co., Ltd.
Shenzhen Juyi Science And Trade Co., Ltd.
Shenzhen Juyi Science And Trade Co., Ltd. is a new energy enterprise engaged in the research and development of lithium battery protection panels
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Latest company news about Enerkey New Design of an active bidirectional DC-DC battery intelligent equalizer
2025-12-18

Enerkey New Design of an active bidirectional DC-DC battery intelligent equalizer

Environmental pollution and energy crises are gradually becoming two major challenges of the 21st century. With increasing environmental awareness and strong government support, electric vehicles, with their energy-saving and environmentally friendly characteristics, have gained market favor and will undoubtedly lead the future development of the automotive industry. Batteries, as the core component of electric vehicles, determine the possibility of further development. Due to technological limitations, the power battery of an electric vehicle is composed of multiple single cells connected in series. The inconsistency of individual cell performance and severe overcharging and over-discharging during use significantly affect the battery pack's lifespan.   Therefore, battery balancing technology is crucial for the industrial development of electric vehicles. Applying battery balancing technology to charging stations to ensure the safe and effective charging of the battery pack each time is one way to solve the problem of battery pack lifespan degradation. The latest domestic and international data show that non-dissipative balancing technology is currently the focus of research, exhibiting a diversified circuit structure and a variety of control methods. However, many balancing methods remain at the theoretical research stage and do not fully consider parameter changes in the actual working environment of the battery pack. Furthermore, some proposed balancing control strategies are often too complex to be applied in practice.     Based on an in-depth analysis of domestic and international research on power battery pack balancing technology, Enerkey BMS has developed an active bidirectional DC-DC battery equalizer design method specifically for the incomplete charging and overcharging situations that often occur during electric vehicle charging. This method can achieve complete charging of lithium battery packs and can balance the charging of a battery pack composed of 24 lithium cells. The designed battery balancing system consists of two parts: the balancing main circuit and the balancing controller. First, the circuit design of the balancing main circuit and controller is described in detail. With the goal of designing a product-level battery equalizer, the circuit design methods for the power supply circuit, power monitoring circuit, DSP peripheral circuit, SPI module, and CAN module are discussed. The balancing controller uses a DSP as the control core, supplemented by Linear Technology's LTC6804-2 voltage acquisition module. Secondly, a complete solution from battery voltage monitoring to individual cell voltage balancing of the battery pack is designed, along with an effective balancing strategy. SOC estimation algorithm; subsequently, a simulation model of the battery balancing system was established, and the balancing scheme was verified through simulation. Finally, a prototype of the battery balancer was developed and subjected to electromagnetic compatibility, high and low-temperature tests, and functional tests to verify the effectiveness and reliability of the entire system design.   For the balancing problem of series-connected lithium-ion batteries, we proposed an intelligent battery balancing scheme based on fuzzy logic control. This battery balancing scheme consists of a bidirectional DC-DC controller with an energy transfer capacitor, which can be used to design a lossless equalizer in the energy balancing system. Simulation and experimental results show good balancing performance of the lithium-ion battery pack. The fuzzy logic balancing control strategy can reduce the balancing time by 32%.     This belongs to the field of balancing technology in battery management systems, involving a high-current power battery bidirectional equalizer, including a bidirectional DC-DC converter, a relay network, and a battery management system. The battery management system monitors the battery voltage and temperature in real time and transmits the obtained temperature and voltage data to the connected microcontroller system; the microcontroller determines the single battery that needs balancing based on the voltage of the individual battery; the microcontroller system selects the relays at both ends of the single battery to be balanced, controls the input and output direction of the set bidirectional DC-DC converter, and activates the relay network to achieve balancing; the relays are respectively set at both ends of each single battery in the battery pack.     Enerkey BMS's newly launched bidirectional DC-DC intelligent equalizer is a high-current power battery bidirectional balancing method and equalizer, achieving lossless balancing of high-current power batteries; it can also meet the requirements of fast charging applications.
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Latest company news about Application of Smart Active Balancer BMS
2025-12-18

Application of Smart Active Balancer BMS

Active balancing protection boards, as a core component of battery management systems, are specifically designed to address inconsistencies among individual cells in a battery pack, such as voltage and capacity differences, thereby improving the overall performance and safety of the battery pack. They have wide applications in various industries, and some specific examples are as follows:   Electric Vehicle Industry: The range, power performance, and safety of electric vehicles highly depend on the performance of the battery system. Active balancing protection boards play a crucial role in electric vehicles. For example, a leading electric vehicle manufacturer's battery pack consists of numerous individual cells. Due to differences in manufacturing processes and operating environments, the performance of individual cells gradually varies. The active balancing protection board monitors the voltage of each individual cell in real time and transfers energy from high-voltage cells to low-voltage cells during charging, and ensures that each cell performs optimally during discharging, thus effectively improving the energy utilization rate of the battery pack. This not only extends the vehicle's range but also extends the battery pack's lifespan by approximately 30%, significantly reducing user costs.     Energy Storage Power Station Industry: Energy storage power stations are crucial for stabilizing the power grid and improving the utilization of renewable energy. In energy storage power stations, a large number of batteries are used for energy storage, making battery consistency management particularly important. A large energy storage power station uses active balancing protection boards to manage its lead-acid battery pack. Due to the high self-discharge rate of lead-acid batteries, significant voltage and capacity differences occur between batteries after long-term use. The active balancing protection board precisely monitors and controls each battery module, preventing overcharging during the charging phase and ensuring that each module discharges at the same rate during the discharging phase, thereby improving the charging and discharging efficiency of the entire battery pack by approximately 15%, reducing energy loss, and enhancing the stability and reliability of the energy storage power station.   Portable Electronic Device Industry: With the popularity of portable electronic devices such as smartphones and tablets, users have higher demands for the battery life and safety of their devices. Active balancing protection boards also play an important role in the battery management of these devices. For example, a well-known brand of smartphone has a built-in lithium-ion battery pack composed of multiple individual cells, and differences between the cells occur during use. The active balancing protection board monitors the status of each individual battery cell in real time, performing dynamic balancing adjustments to ensure that each battery is fully charged during charging and to prevent overcharging. During use, it intelligently distributes output power, extending battery life. It also features protection functions against overcurrent, overvoltage, and short circuits, effectively improving the safety of the mobile phone battery. By using an active balancing protection board, this brand of smartphone has extended battery life by approximately 10%, significantly improving the user experience.     Other industries: In addition to the industries mentioned above, active balancing protection boards are also widely used in drones, power tools, electric bicycles, and other fields. In these applications, the active balancing protection board also improves the performance and lifespan of battery packs by addressing battery inconsistencies, enhancing the safety and reliability of the equipment, and providing strong support for the development of various industries.   We currently have this type of product in stock. Our lithium-ion battery active balancing protection board utilizes advanced bidirectional DC-DC active balancing technology, which can adjust battery pack capacity differences in real time, significantly extending range and lifespan. Please contact us for more information.    
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