![]() ![]() Nowadays, there are also some systems that receive and transmit data by using wireless communication. Therefore, the most repugnant thing for RS232 or RS485 health monitoring is the complicated wiring, which is basically prohibitive for its wide-applications. For a typical UPS module equipped in the rail transit system, at least tens of VRLA batteries are needed for a single UPS module. It is difficult to realize long-distance, fast, and large data communication. However, the RS232 and RS485 serial ports have the disadvantages of short transmission distance, low transmission rate, and small data throughput. The data transmission of existing battery monitoring systems is mainly through RS232, RS485, and other serial ports or the Ethernet. Thus, it is necessary to design an intelligent health-status monitoring system for the VRLA, to survey the battery parameters online, which is of great significance to ensure the safety and reliable operation of power supply equipment in various complex operation conditions.Īccording to the specific needs of different fields, there have been relevant battery monitoring systems applied to the photovoltaic standalone lighting system, renewable energy storage system, automobile power system, etc. When the UPS should come to work, system failure may put not only the economy and social security at great risk but also human safety in an unconventional emergency. As a series-connected component of the backup power supply, a single battery’s malfunction, due to various faults during operation, will result in the failure of the whole system. With the development of the world economy, transportation, energy, communications, and other areas, the back-up VRLA battery systems are widely used. ![]() The VRLA battery is an important part of the modern new energy field, and it has been the workhorse of uninterruptible power supply (UPS). The test results indicate that the system has the characteristics of real-time monitoring, high precision, small-volume, and comprehensive functions. In addition, the system effectively integrates most of the circuits of the battery status collector onto one chip, which greatly reduces the size and the power consumption of the collector and also provides a possibility for embedding each VRLA battery with a chip that can monitor the health status during the whole life. The system can predict the remaining capacity of the battery combined with the software algorithm for realizing real-time monitoring of the battery’s health status and fault-warning, providing a basis for ensuring the safe and reliable operation of the battery. A general packet radio service (GPRS) network is employed for interacting data with the cloud-monitoring platform. The system is based on the ZigBee wireless communication module for collecting voltage, temperature, internal resistance, and battery current in real-time. In order to resolve issues of large volume, complicated wiring, and single function for a battery monitoring system at present, we propose to build a novel intelligent-health-monitoring system. The VRLA (valve-regulated lead-acid) battery is an important part of a direct current (DC) power system.
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