CO sensor online calibration method of battery thermal runaway monitoring system

A monitoring system and calibration method technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of sensor dynamic calibration limitations, cannot meet the high precision requirements of sensors, and poor real-time performance, so as to improve accuracy and real-time performance, Achieve online precise calibration and improve the effect of accuracy

Active Publication Date: 2020-12-25
YANTAI INNOVATIVE NEW ENERGY TECH CO LTD
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Problems solved by technology

[0002] The existing battery thermal runaway monitoring system installed in new energy vehicles, energy storage power stations and other environments, when the CO sensor itself is offset and causes false alarms, it mainly uses a variety of sensor comprehensive analysis methods to reduce the error caused by sensor performance offset. False positive probability, but did not fundamentally solve the problem of sensor performance offset
The existing gas sensor calibration methods mostly use the method of building a calibration environment and adding a standard device as a calibration reference for timing judgment and calibration. This calibration method has poor real-time performance and cannot meet the high accuracy of the battery thermal runaway monitoring system for sensors. Requirements, and there are certain limitations to the dynamic calibration of the sensor

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  • CO sensor online calibration method of battery thermal runaway monitoring system
  • CO sensor online calibration method of battery thermal runaway monitoring system

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[0026]The technical scheme of the present invention will be described in detail below in conjunction with the drawings:

[0027]Such asfigure 2As shown, the battery thermal runaway monitoring system includes a detection controller 3, a data concentrator 5, a data remote transmission terminal 4, a big data platform 2 and a mobile phone APP1.

[0028]The detection controller 3 is arranged near or inside the battery compartment, the battery pack or the energy storage box. The detection controller 3 includes a CO sensor and an environmental monitoring sensor for monitoring the battery in the battery compartment, the battery pack or the energy storage box. Thermal runaway state. The CO sensor is a redundant design and includes a first CO sensor and a second CO sensor. When the detection controller 3 is in a normal working state, the first CO sensor works normally, and the second CO sensor is in a power-off mode. The second CO sensor serves as an online calibration reference sensor of the first CO

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Abstract

The invention discloses a CO sensor online calibration method of a battery thermal runaway monitoring system. The method comprises the following steps that: the thermal runaway monitoring system adopts a first CO sensor and an environment monitoring sensor to collect target environment information and upload the target environment information to a big data platform, data screening statistics is performed, a sensor calibration pre-judgment model is established by using multi-sensor data comparative analysis and a neural network, and a second CO sensor is started to perform online calibration onthe first CO sensor when that the first CO sensor has data offset through the sensor calibration pre-judgment model and big data platform historical data analysis comprehensive judgment is judged. The accuracy and real-time performance of online judgment of the performance of the CO sensors are improved, online dynamic and static calibration is performed through CO sensor redundancy design, the precision is high, equipment does not need to be disassembled, additional calibration equipment is not needed, manpower resources are saved, and the accuracy of the battery thermal runaway monitoring system is improved.

Description

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Claims

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Application Information

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Owner YANTAI INNOVATIVE NEW ENERGY TECH CO LTD
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