Which aspects of the core technology of high-voltage BMS need further breakthroughs?
1.High-voltage detection circuit
Although existing isolation amplifiers, optocouplers and other technologies can achieve high-voltage detection, they have problems such as insufficient anti-interference performance and slow response speed under high-voltage and high-current environments. It is necessary to develop new high-voltage detection chips to improve detection accuracy and reliability.
Battery balancing management
For large-scale battery packs at the MWh level, how to achieve dynamic and accurate balancing is still a technical difficulty. The efficiency and balancing speed of existing passive/active balancing technologies need to be improved under high power and large voltage differences. It is necessary to study new and efficient balancing topologies and control algorithms.
SOC/SOH estimation algorithm
Accurately estimating the SOC and SOH of the battery pack is crucial for BMS, but for large battery packs, the accuracy and robustness of existing algorithms need to be further improved. It is necessary to develop new estimation algorithms suitable for high-voltage and large-capacity battery packs.
2.Safety protection technology
The safety protection of batteries under high-voltage environments is more complicated, requiring more reliable overvoltage, overcurrent and overtemperature protection measures. At the same time, it is also necessary to study fault diagnosis and isolation technologies to improve the safety of the entire battery system.
3.Communication technology
Large-scale energy storage systems have higher requirements for communication between BMS and the host computer, and require a faster and more reliable communication interface. At the same time, we must also consider the needs of remote monitoring and data analysis to improve the intelligence level of BMS.
In general, as the scale of energy storage systems continues to expand, high-voltage BMS still needs further technological innovation and breakthroughs in detection, balancing, state estimation, safety protection and communication to meet the needs of large-scale energy storage applications in the future.
