BMS current acquisition precision test system and method, and readable storage medium

Abstract

The invention discloses a BMS current acquisition precision test system and method, and a readable storage medium. The test system is applied to a BMS of a power battery, and the test system comprises: a test device used for outputting a control signal corresponding to a target current curve and a preset working condition to the power battery so as to control a discharge current or a charge current of the power battery; an acquisition device used for acquiring discharge current or charge current in real time to obtain real-time reference current information; a communication device used for acquiring real-time current information acquired and uploaded by the BMS; and an analysis device used for calculating a current error between the real-time current information and the real-time referencecurrent information, judging whether the current error is in a corresponding precision range or not, and if so, judging that the acquisition precision of the BMS meets the design requirement. The whole test process is automatically realized by the test system, manual input of test points one by one and manual analysis and comparison are not needed, the test speed and the test accuracy are remarkably improved, and the labor cost and the time cost are greatly saved.

Description

technical field [0001] The invention relates to the field of power battery BMS, in particular to a test system, method and readable storage medium for BMS current acquisition accuracy. Background technique [0002] As the core component of new energy vehicles, power batteries have a particularly prominent impact on new energy vehicles. Can the BMS (Battery Management System, battery management system) accurately monitor the real-time status of power batteries and accurately feed back the status of power batteries to the entire system? Vehicles and users will directly affect the operation of the vehicle. Furthermore, the acquisition accuracy of the BMS must match the requirements of the entire vehicle, so as to avoid "false alarms" due to mismatched accuracy, which will cause the entire vehicle to issue wrong instructions. In view of the complex working conditions of the whole vehicle, and the BMS acquisition accuracy varies with different working conditions, the BMS acquisi...

AI Technical Summary

Problems solved by technology

This method is very simple for a single working condition and a working condition with few state changes, but for complex working conditions that require manual input of a large number of test conditions and data screening, it consumes more labor costs and time costs, and is prone to errors

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