Temperature testing method, device and system of power cells

Abstract

The embodiment of the present invention discloses a power battery temperature testing method, device and system, wherein the method includes: installing a temperature sensor at the position to be tested in a group of power batteries in the battery box; constructing an analog switch according to the arrangement information of the temperature sensor The gating matrix; the temperature sensor that receives the gating instruction collects temperature data and performs analog-to-digital conversion on the temperature data; draws a temperature curve based on the collected time point and the temperature data after the analog-to-digital conversion, and generates a temperature field analysis diagram. In the embodiment of the present invention, the temperature of different positions of the power battery in the battery box is measured, and combined with the polling and gating of the test time point of the analog switch within the charging and discharging time, the collected temperature data is uploaded to the server, and the temperature is plotted. Curve and generate a temperature field analysis diagram for analysis, so as to realize the dynamic monitoring of the temperature of the power battery, reduce the possibility of temperature failure when the power battery is in use, and then reduce environmental pollution and reduce maintenance costs.

Description

technical field [0001] The invention relates to the technical field of electric vehicle battery monitoring, and more specifically, to a power battery temperature testing method, device and system. Background technique [0002] The power battery is the power source that provides the power source for the tool. With the promotion and application of electric vehicles, the performance stability of the battery is related to the operation continuity and safety of the electric vehicle. Therefore, the capacity and power supply performance of the power battery have become the focus of attention. focus. [0003] Most of the power batteries are sealed lead-acid batteries and lithium iron phosphate batteries. During the operation of electric vehicles, that is, the charging and discharging process of power batteries, due to the differences in the individual quality of the batteries and the different physical environments in which they are located, the overall status of charging and discha...

AI Technical Summary

Problems solved by technology

[0003] Most of the power batteries are sealed lead-acid batteries and lithium iron phosphate batteries. During the operation of electric vehicles, that is, the charging and discharging process of power batteries, due to the differences in the individual quality of the batteries and the different physical environments in which they are located, the overall status of charging and discharging is prone to be uneven. And the problem of local high temperature

[0004] In view of the above situation, the existing treatment method is to overhaul or discard the battery after the battery is abnormally charged and discharged or even overheated and burned, which not only causes waste of the battery, pollutes the environment, and increases maintenance costs.

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