Virtual battery management system and application method thereof

Abstract

The invention discloses a virtual battery management system and an application method thereof, belonging to the technical field of new energies. The virtual battery management system has the structure as follows: a central data processing unit is respectively connected with a man-machine interaction unit, a power battery emulation unit, a CAN (Controller Area Network) communication unit, a measuring unit and an electron load control unit. The virtual battery management system has the advantages that: firstly, the state and charging requirements of a charging object which is possibly encountered in the actual use process are integrated in one system; secondly, charging state information interaction between the virtual battery management system and charging equipment to be tested is realized; thirdly, the model parameters and time coefficients of the test type power battery can be adjusted, and the controllability and work frequency of the charging equipment are improved; and fourthly, the invention provides reference for the influence of the charging equipment on the power battery in the charging process of the power battery, and diversity of the charging loads and universality of the test environment of the charging equipment are realized.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a virtual battery management system and an application method thereof. Background technique [0002] In the performance test of electric vehicle charging equipment, the test charging load is mainly divided into two categories, one of which is a battery pack mainly composed of a real power battery and a battery management system, and the other is an electronic load that simulates a battery . [0003] The first type of load is a real power battery pack. Its most prominent feature is that it builds a real test environment, which can reflect the actual performance and status of the charging device to a certain extent, and can also understand the impact of the charging device on the power battery. actual impact. However, first of all, due to the diversity of power batteries and the differences in the charging modes provided by the battery management system, in practic...

AI Technical Summary

Problems solved by technology

At present, the more advanced electronic loads are program-controlled DC electronic loads. This type of load can simulate the port voltage and internal resistance of the power battery pack, but there is no system, complete power battery model, and actual power battery pack. The characteristics are far apart; moreover, the electronic load has not yet considered the function of the battery management system. When using this electronic load to test the charging device, there is no and cannot test the data communication between the two stages such as handshake, parameter configuration, charging and charging end. functions and capabilities; and the actual state of the power battery is ignored during the charging process. For example, when the battery is overcharged, the battery temperature is too high or too low, the electronic load cannot be charged in time because there is no online monitoring function of the battery management system. The device provides information on the status of the limit, not to mention testing and judging the ability of the charging device to process and respond to the received information

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