Battery temperature detection assembly

Abstract

A battery temperature detection assembly comprises an intelligent processor and a battery management system and further comprises a temperature measurement optical fiber wound on a battery core, a laser device for emitting lasers, a photodiode for photoelectric conversion, and a wavelength division multiplexer. The laser device is in optical signal connection with the temperature measurement optical fiber through the wavelength division multiplexer. The temperature measurement optical fiber, the wavelength division multiplexer and the photodiode are sequentially connected. The photodiode is in signal connection with the intelligent processor. The battery temperature detection assembly is a battery temperature monitoring system based on distributed type optical fiber temperature measurement. According to the distributed type optical fiber temperature measurement, the optical fiber Raman scattering effect for temperature measurement and the optical time domain reflection measurement technology for temperature positioning are comprehensively utilized, temperature monitoring and signal transmitting are achieved through a single optical cable, and then spatial temperature distribution information is obtained. By means of the battery temperature detection assembly, the temperature distribution condition of the battery core along the optical fiber can be continuously measured, the measurement distance is long, and ceaseless automatic measurement can be conducted.

Description

technical field [0001] The present invention relates to the technical field of battery detection equipment, and more specifically relates to a battery temperature detection component. Background technique [0002] Batteries, especially lithium batteries, have been widely used in modern energy storage devices. The quality of lithium batteries is not easy to control when mass-produced, and there are slight differences in the power of battery cells when they leave the factory. The nature of the battery will become more and more obvious, and the battery efficiency and life will also deteriorate. Coupled with overcharging or overdischarging, it may lead to safety problems such as fire and combustion in severe cases. [0003] The battery management system (BMS) is to intelligently manage and maintain each battery unit, monitor the operating status of the battery, and extend the service life of the battery. One of the important monitoring indicators is the temperature of the batter...

AI Technical Summary

Problems solved by technology

Using this monitoring method for large-capacity energy storage devices (using hundreds to thousands of batteries, or even more), it is necessary to add a large number of microprocessors to process temperature data, and at the same time, it is necessary to arrange a large number of temperature measurement cables. , the workload of installation and wiring is heavy, and the maintenance of the probe itself will also be very complicated.

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