As the electric vehicle and energy storage sectors continue to grow, there is an increasing demand for battery systems that are not only more efficient but also safer and longer-lasting. Battery management has emerged as a crucial component of this technological advancement, prompting engineers and researchers to explore new methods for monitoring and optimizing battery performance.
Conventional battery monitoring techniques often struggle to accurately assess the health of individual cells, manage thermal issues, and ensure uniform charging across extensive battery packs. In response to these challenges, Dukosi has introduced its cutting-edge cell monitoring system (DKCMS), now ready for mass production.
The Importance of Battery Management Systems
The battery management system (BMS) serves as an electronic interface responsible for overseeing and protecting rechargeable batteries, ensuring optimal performance, safety, and longevity. By continuously monitoring various battery metrics, such as state of charge, state of health, and residual capacity, the BMS generates critical data reports.
These metrics help mitigate risks associated with deep discharge, overcharging, overheating, and excessive current. A key function of the BMS is cell balancing, which ensures consistent charging and discharging across all cells within a battery pack. Without effective cell balancing, batteries become susceptible to thermal runaway, overcharging, or deep discharging, which can significantly shorten their lifespan and lead to catastrophic failures.
As batteries play an increasingly vital role in energy infrastructure, the need for reliable monitoring solutions has never been greater. However, the complexity of modern battery systems, often composed of thousands of individual cells, presents significant challenges in maintaining efficiency and preventing failures. These issues are compounded by the limitations of traditional wired systems and the difficulties of implementing wireless communication in densely packed battery environments.
Introduction of Chip-on-Cell Technology
Dukosi’s DKCMS features a revolutionary chip-on-cell design, which involves mounting the DK8102-AQ-25 Cell Monitor chip directly onto each battery cell. This chip is designed to provide high-precision voltage and temperature measurements for each cell, facilitating optimal battery usage and synchronization. The DK8102 chip operates in conjunction with a DK8202-AR-25 System Hub chip, which manages the overall system.
Utilizing Dukosi’s proprietary C-SynQ communication protocol, the DKCMS enables contactless, bidirectional data transfer between the cell monitors and the BMS host via a single bus antenna. This innovative approach addresses the shortcomings of traditional wired and long-range wireless systems, ensuring secure, robust, and reliable communication with consistent latency. Additionally, the system synchronizes cell monitor data for real-time monitoring and diagnostics, including cell balancing.
The DKCMS is an AEC-Q100-qualified solution, which also highlights applications such as nonvolatile embedded memory, providing lifetime traceability for each cell.
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