Co-simulation method and device for battery modules

Abstract

The present invention provides a battery module co-simulation method and device. The method includes the following steps: acquire the parameters of the battery module through Amesim software, and calculate the heat generation of the battery cell; transmit the heat generation to the Star ccm software; The ccm software performs heat dissipation calculation according to the heat generation, and transmits the cell temperature obtained by the heat dissipation calculation to the Amesim software; the Amesim software receives the cell temperature, and recalculates the heat generation combined with the parameters of the battery module to obtain a new heat generation, and The new heat generation is transmitted to Star ccm software for heat dissipation calculation. The present invention can realize the combined simulation of battery modules, that is, use Amesim for heat generation calculation, use star ccm for heat dissipation analysis, and use the respective advantages of the two softwares to avoid the problem of poor accuracy when a single software is used for simulation, thereby improving the efficiency of battery modules. The simulation accuracy of the group.

Description

technical field [0001] The invention relates to the technical field of simulation, in particular to a method and device for co-simulation of a battery module. Background technique [0002] As the core component of an electric vehicle, the battery pack needs to meet relevant standards such as performance, safety and service life under the conditions of the vehicle. Appropriate temperature is the key to ensure the service life of the battery cell. It is necessary to ensure that the battery cell can be maintained at 0 to 45 °C as much as possible whether in a high temperature environment of 40 °C or a low temperature environment of -30 °C. 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 apply simulation tools for preliminary thermal scheme evaluation, scheme verification and optimization, so as to shorten the development cycle and r...

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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