Bus duct temperature monitoring

Abstract：

The lithium battery industry has maintained a rapid growth trend, and the scale of the industry has continued to expand. At the same time, the lithium battery production line of the new energy industry factory is highly dependent on electricity, which puts forward high requirements on the reliability of the power supply equipment. As an important power transmission equipment for flat power distribution in the factory, when the dense bus duct causes poor contact of the contacts due to poor manufacturing, transportation and installation, the contact temperature rise is too high, or even power outages, burning and other faults, it has a great impact on the safe production of the factory production line and the economic benefits of the enterprise.

Keywords:

Bus Duct, Lithium battery, wireless temperature monitoring , infrared temperature measurement

However, at present, for the operation and maintenance of dense bus ducts, the traditional method is that the operation and maintenance personnel patrol once a month, and conduct random inspections of the bus duct connections through handheld infrared temperature measuring guns. This operation and maintenance method is very inefficient and increases a lot of operation and maintenance workload. In addition, the high-voltage bus duct equipment is generally installed at a height of several meters, and the space is closed and narrow, and manual inspections and temperature measurements are often impossible. The traditional temperature measurement method cannot effectively solve the above problems and there are great safety hazards.

Therefore, the bus duct temperature monitoring system came into being. The temperature monitoring system can make reliable predictions of early fault defects of dense bus ducts, and eliminate overheating faults in advance through a variety of algorithm logics. It can improve preventive test maintenance to predictive status maintenance, reduce the number of power outages, and improve the reliability of bus duct power supply.

Acrel AMB300 series bus duct infrared temperature measurement solution, this is a non-contact infrared temperature measurement device, which can solve the problem of excessive temperature rise of the bus duct, upload the temperature data of each phase in the connector to the background in real time, and prompt management personnel to pay attention to the alarm point or take necessary preventive measures。

This bus duct infrared temperature measurement solution consists of an infrared temperature measurement module, an infrared collector, and a power module. The system communicates with the background monitoring through the RS485 line (as shown below). The system design follows the international standard Modbus-RTU transmission protocol, and the security, reliability and openness have been greatly improved. RS-485, as a serial communication interface, has the characteristics of long transmission distance, high speed, good level compatibility, flexible and convenient use, low cost and high reliability. Compared with wireless communication methods, it has the advantages of low price and strong anti-common mode interference ability.