Temperature testing method, device and system of power cells

Abstract

The embodiment of the invention discloses a temperature testing method, a temperature testing device and a temperature testing system of power cells, wherein the method comprises the steps of: installing temperature sensors at positions of a power cell group in a cell box, which are to be tested; constructing an analog switch gating matrix according to the distribution information of the temperature sensors; receiving the collected temperature data of the temperature sensors of a gating instruction; conducting analog-digital conversion on the temperature data; drawing a temperature curve through collection time points and the temperature data after analog-digital conversion; and generating a temperature field analysis chart. According to the embodiment of the invention, the temperature of different positions of the power cells in the cell box is measured; the polling gating of an analog switch in testing time points of charging and discharging time is combined; the collected temperature data are uploaded to a server; the temperature curve is drawn; the temperature field analysis chart is generated for analysis so as to realize the dynamic temperature monitoring of the power cells and reduce the possibility of fault caused by temperature in the utilization of the power cells.

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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