Battery Management System (BMS) for motorcycle starting lithium batteries
main content
With the wide application of lithium battery technology in the motorcycle field, the battery management system (BMS) has become a key technology to ensure the safe and efficient operation of lithium batteries. BMS can not only monitor the battery status in real time, but also optimize battery performance and extend service life through various technical means. This article will briefly introduce the core functions, balancing technology and low-temperature preheating technology of the BMS for motorcycle starting lithium batteries.
Real-time monitoring and data collection
BMS can monitor key parameters such as voltage, current and temperature of the battery in real time. Through high-precision sensors and signal acquisition modules, BMS can accurately obtain the status information of each battery cell, providing data support for subsequent management and protection.
Safety protection
The BMS is equipped with multiple safety protection functions, including overcharge, overdischarge, overcurrent, short circuit and over-temperature protection. These protection mechanisms can promptly detect abnormal conditions during battery operation and take corresponding measures, such as cutting off the circuit, to prevent battery damage or safety accidents.
Charge and discharge management
The BMS can reasonably control the charging and discharging processes based on the real-time status of the battery. During charging, the BMS can optimize the charging curve to ensure that the battery is fully charged in the shortest time while avoiding overcharging. During discharge, the BMS can rationally allocate electrical energy according to the load demand, thereby extending the battery's driving range.
Data communication
Modern BMS are usually equipped with communication interfaces, such as CAN bus. Through these interfaces, the BMS can interact with other electronic systems of the motorcycle for data, achieving intelligent management and remote monitoring.
Passive equilibrium
Passive balancing is to balance the voltage of each cell within the battery pack by consuming excess energy. This method is simple and easy to implement, but its energy utilization efficiency is relatively low. It is usually applicable to scenarios where the consistency requirements for battery packs are not high.
Active balancing
Active balancing technology achieves voltage balance among battery cells through energy transfer. For instance, the MagicBMS solution from Maijuwei supports an intelligent differential voltage balancing function, which can automatically transfer the energy of high-voltage cells to low-voltage cells without relying on software. This technology can effectively extend the battery life and improve the overall performance of the battery pack.
Intelligent balance
Intelligent balancing technology combines the advantages of passive and active balancing. Through complex algorithms and control strategies, it achieves more efficient energy management and cell balancing. For instance, Jiangsu Rongxin's intelligent charging equalization circuit can ensure the consistency of voltage during the charging process of the battery pack, thereby extending the battery's service life.
Low-temperature startup issue
The performance of lithium batteries will decline significantly in low-temperature environments, making it difficult to start. To solve this problem, the BMS needs to have the function of low-temperature preheating.
Heating method
The low-temperature preheating technology of BMS mainly includes two methods: external heating and internal heating. External heating includes air heating, heating films, etc. Internal heating raises the temperature through chemical reactions inside the battery or the heat generated by the passage of current.
Heating strategy
The BMS will intelligently control the heating process based on the current temperature and status of the battery. For instance, in a low-temperature environment, the BMS can activate the heating device to raise the battery temperature to an appropriate operating temperature range. Meanwhile, BMS will also optimize the heating strategy to avoid energy waste caused by excessive heating.
Conclusion
The BMS for starting lithium batteries in motorcycles plays a significant role in ensuring battery safety, optimizing performance, and extending lifespan. Through core functions such as real-time monitoring, safety protection, charge and discharge management, and data communication, BMS can ensure the stable operation of batteries under various working conditions. Meanwhile, the introduction of balancing technology and low-temperature preheating technology has further enhanced the performance and adaptability of the battery. With the continuous advancement of technology, BMS will play a greater role in the future, providing motorcycle users with safer, more efficient and reliable power support.
START-STOP LITHIUM battery
Enov start-stop battery is designed to provide excellent performance for high-demand start-stop vaehicles. It adopts the third-generation intelligent lithium platform architecture to achieve technological breakthroughs in core indicators such as cycle life, environmental adaptability and energy density. Compared with the traditional lead-acid battery system, the energy efficiency is increased by 210%, the cycle life is extended by 8-10 times, and the monthly self-discharge rate is controlled within 3%. Enov's unique low-temperature battery technology makes a breakthrough in achieving stable output in the whole climate domain from -30℃ to 65℃, maintaining more than 90% of the effective capacity release under extremely cold conditions (-30℃), and maintaining 90% of the capacity in high temperature environments (65℃).
The start-stop battery series products cover the mainstream voltage platform of 12V/24V/48V, and support flexible configuration of LFP (lithium iron phosphate) and NCM (lithium nickel cobalt manganese oxide) dual-material system. All models adopt modular design to support customization of different model specifications. Enuo engineering and technical team to provide full cycle technical service support, if you need, please contact us.
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