Joint simulation method and device of battery module

Abstract

The invention provides a joint simulation method and device for a battery module, wherein the joint simulation method comprises the following steps: obtaining the parameters of the battery module through Amesim software, and calculating the heat generation quantity of a battery cell; the generated heat is transmitted to Star ccm software; performing heat dissipation calculation by means of the Star ccm software according to the generated heat, and transmitting the battery cell temperature obtained by heat dissipation calculation to the Amesim software; receiving the temperature of the batterycell through the Amesim software, recalculating the heat generation amount in combination with the parameters of the battery module to obtain new heat generation amount, and transmitting the new heatgeneration amount to the Star ccm software for heat dissipation calculation. According to the invention, the combined simulation of the battery module can be realized, that is, the Amesim is used forheat generation calculation, the star ccm is used for heat dissipation analysis, and the respective advantages of the two software are adopted, so that the problem of poor precision when single software is used for simulation is avoided, and the simulation precision of the battery module is improved.

Description

Technical field [0001] The present invention relates to the field of simulation technology, in particular to a joint simulation method and device of battery modules. Background technique [0002] As the core component of electric vehicles, battery packs need to meet relevant standards such as performance, safety, and service life under the conditions of the entire vehicle. The appropriate temperature is the key to ensuring the service life of the battery cell. It is necessary to ensure that the battery cell can work at 0~45℃ as far as possible regardless of the high temperature environment 40℃ or the low temperature environment -30℃. For this reason, the battery needs to be heated. Management, that is, cooling the battery pack under high temperature conditions and heating under low temperature conditions. In the thermal management of battery packs, it is often necessary to use simulation tools for preliminary thermal program evaluation, program verification and optimization to s...

AI Technical Summary

Problems solved by technology

However, when using Amesim to simulate the thermal management conditions of the battery pack, the calculation of the DC internal resistance of the heating power is more accurate, but the one-dimensional simulation cannot reflect the temperature distribution of all points in the battery pack, and only one direction is considered when calculating the heat dissipation , resulting in inaccurate calculation of heat dissipation, thus affecting simulation accuracy

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