Bidirectional active balancing with multiple choices for energy storage applications

With the continuous development of new energy technology, energy storage technology is constantly innovating. In order to improve energy storage capacity and output high power and high voltage, a large battery energy storage system is usually composed of many monomers in series and parallel. To ensure the safe operation of the system, the requirements for the battery management system BMS are becoming increasingly high. Shanghai Energy has been deeply involved in the industry for over 10 years, constantly breaking through with a down-to-earth approach. With rich platforms and solutions, it perfectly matches various application scenarios.

The active balancing scheme is to supplement the energy of high-energy battery cells to low-energy battery cells, which essentially involves energy conversion within the battery pack to improve the diversity of individual cells within the battery pack. It is a more complex balancing technique, as the charge within the battery cells is redistributed during charging and discharging cycles, resulting in an increase in the total available charge in the battery pack, thereby prolonging system operation time.

6 major characteristics

● Support up to 24 battery cell voltage monitoring.

● Supports up to 22 NTC (10K) temperature monitoring channels.

● Balanced current supports 3A.

● Thermal management technology achieves active battery management while ensuring the safety and reliability of the system.

● Supports CAN bus OTA technology, facilitating firmware upgrades.

● Supporting CAN station address automatic recognition and allocation technology greatly facilitates on-site implementation.

4 major advantages:

1. Bidirectional transfer technology, real-time adjustment of battery pack passenger volume differences, effectively extending service life, and breaking the bottleneck of inconsistent charging and discharging of individual batteries.

2.In addition to conventional undervoltage/overvoltage/overcurrent protection, other protection features (such as over temperature/under temperature/functional safety) can also be implemented dynamically. Thus achieving customization of protection features.

3. Digital loop compensation control technology, achieving dynamic compensation of power loop Q value, reducing device errors, aging, temperature source, compensation and other requirements. Thereby improving the reliability and stability of the system.

4. Adopting bidirectional active clamping technology to achieve charging efficiency≧90% and discharging efficiency of ≧85%.

The energy storage market is booming, and Shanghai Energy remains committed to providing comprehensive services for BMS battery management system solutions, actively exploring green and intelligent energy utilization, continuously promoting new development of energy storage technology, and helping to achieve the dual carbon goal!


Post time: Mar-13-2024