Li Tongwei, a leading company in Battery Management Systems (BMS), is making significant strides in enhancing the intelligence of green energy solutions. As of 2025, the importance of BMS in the performance of battery packs is increasingly recognized. The BMS serves as a crucial connector between electric vehicles, energy storage systems, and lithium batteries, bearing the responsibility of real-time monitoring of battery parameters, assessing battery conditions, online diagnostics and alarms, and balancing control to ensure uniform performance across individual battery cells.
However, the complexities of managing BMS systems present several challenges. For instance, when managing multiple batteries, technicians must often be present on-site for calibration. Additionally, replacing a battery pack requires checks, maintenance, and updates, which can be inconvenient. Moreover, understanding the operational performance, degradation changes, and cycle counts of battery groups necessitates repeated recording by technicians, making the process cumbersome. It’s crucial to note that safety hazards often go unnoticed until they directly impact the functioning of electric vehicles or energy storage systems, highlighting the need for proactive measures.
Thus, the advancement of BMS technology is essential. With the rise of electric two-wheelers and the low-altitude economy, BMS systems need to evolve not only in hardware but also in software management systems. Standardization and modularization are emerging as key trends for the future of BMS.
BMS Transformation into Intelligent Systems
To achieve intelligence in BMS, three critical areas must be addressed: perception, decision-making, and execution. First, perception involves continuously monitoring the physical parameters of the battery through intelligent management. Second, decision-making requires evaluating battery conditions using a database and controlling algorithms. Lastly, execution involves implementing a comprehensive action plan following the decision-making process, ensuring battery safety, managing charging and discharging, and providing thermal management and fault warning signals.
Central to these processes is the algorithm, where high-precision algorithms such as Kalman filters and neural networks are seen as the future direction. These algorithms directly influence the quality of software technology, but they rely heavily on data. Battery manufacturers and end vehicle manufacturers are expected to possess extensive battery cell databases. According to projections from Qidian Lithium Battery, breakthroughs in BMS technology will likely emerge from collaborations and competitions between battery manufacturers and vehicle companies. Ultimately, the goal of BMS intelligence is to balance the performance of individual battery cells, presenting a common challenge for BMS and cell manufacturers: while producing batteries is relatively easy, achieving high quality is significantly more difficult. The precision and balancing capacity required represent a ‘balancing art’ rather than merely a technical challenge.
Furthermore, different types of batteries, such as energy storage, power batteries, and small power battery packs, have distinct requirements for BMS. For instance, MWh and GWh level energy storage stations demand extensive management of numerous battery connections, often requiring higher technical standards than those for automotive power battery BMS. As a result, BMS manufacturers must develop tailored solutions for various segments. Qidian Lithium Battery anticipates that BMS manufacturers may gradually transition from being simple suppliers to becoming data service operators, with competitive software services reaching new heights.
Smart Solutions for Green Energy
As highlighted by Li Tongwei Product Manager Huang Xingyu at the 2025 Qidian Lithium Battery cylindrical battery technology forum, the company is focused on software management. Clients increasingly demand timely, safe, and rapid transmission of battery status and usage information. This has led the company to invest significantly in transmission technology.
Li Tongwei has been dedicated to the battery management sector for 20 years, with a broad business scope. In the cylindrical battery market, the company specifically targets the niche markets of electric two-wheelers and three-wheelers, developing detailed BMS solutions that incorporate traditional technologies along with Bluetooth, remote control, GPS, and BeiDou positioning to enhance BMS capabilities.
Moreover, communication base stations represent an important application scenario for Li Tongwei’s cylindrical battery business. The company is also conducting sodium battery-related research in two provinces, aiming to elevate sodium BMS technology to new heights. The overseas market is another focus area, particularly in managing battery packs for golf carts. By integrating charging and bidirectional inverter technologies tailored to the performance characteristics of golf carts, Li Tongwei enables simultaneous charging and discharging, with solar power and remote control features.
In the energy storage sector, Li Tongwei is involved in balcony energy storage, offering solar panels ranging from 600W to 3000W, which combine with small inverters and batteries. This integration extends from panel-level BMS to inverter controls, adapting to various scenarios. For portable energy storage products featuring cylindrical batteries, Li Tongwei has revamped communication within BMS boards, inverters, and panels while introducing an app for product operations, innovating for the rental market, especially in overseas tourist destinations.
In the drone sector, Li Tongwei adopts a distinct technical strategy, emphasizing rapid charging and battery health management. The company has integrated BMS with fast charging solutions for drones, allowing for quick charging and maintenance after landing. Collaborations with several large companies for joint testing utilize remote backend platforms for monitoring and data collection, ensuring long-term support for clients.
In the emerging humanoid robot segment, Li Tongwei employs the latest digital power control technologies alongside traditional BMS management techniques to address new battery demands. This includes intelligent dual-battery rapid charging and health management, with low-latency, secure communication achieved through wired and wireless technology integration. Huang Xingyu emphasizes that communication is integral to meeting various client needs, providing timely feedback on voltage, current, and temperature, and utilizing a cloud platform to assist clients in managing battery status and data collection.
