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Thermal diffusion joint simulation method for power battery system based on star CCM+ and Amesim

A power battery and thermal diffusion technology, which is applied in design optimization/simulation, special data processing applications, computer-aided design, etc., can solve problems such as few researches, limitations of simulation methods, and difficulty in engineering application of research results, so as to improve Simulation efficiency, effect of ensuring simulation accuracy

Active Publication Date: 2021-01-15
CHINA AUTOMOTIVE TECH & RES CENT +1
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Problems solved by technology

At present, the research on thermal runaway is still limited to the single battery level, and the simulation analysis of thermal diffusion behavior at the system level is limited by the simulation method, so few people have studied it.
Therefore, the research results on thermal runaway are difficult to achieve engineering applications, and cannot provide effective solutions for the safety improvement and safety protection of electric vehicles

Method used

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  • Thermal diffusion joint simulation method for power battery system based on star CCM+ and Amesim
  • Thermal diffusion joint simulation method for power battery system based on star CCM+ and Amesim
  • Thermal diffusion joint simulation method for power battery system based on star CCM+ and Amesim

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0017] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. A process may be terminated when its operations are complete, but may also have additional steps not included in the figure. A proc...

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Abstract

The embodiment of the invention discloses a thermal diffusion joint simulation method for a power battery system based on star CCM+ and Amesim. The method comprises the following steps: performing contact interface processing on a three-dimensional simulation model of a power battery system by utilizing finite element preprocessing software and generating a surface grid; importing the surface gridgenerated in the pre-processing step into star CCM+ software to carry out region division, and setting grid parameters to generate a volume grid; setting corresponding material attributes for different regions of the power battery system body grid model, and setting 'collaborative simulation' operation in the material attributes of the power battery system three-dimensional simulation model; building a control module, conducting parameter calling, and checking a simulation result. According to the method, a complete system thermal expansion model is finally formed by combining a star CCM+ heat transfer model and an Amesim control model, so that the simulation precision of the model can be ensured, the calculated amount is greatly reduced, the thermal diffusion state of the battery systemis better predicted, corresponding protection measures are put forward, and the safety of the electric vehicle is improved.

Description

technical field [0001] The invention belongs to the field of power battery safety, and in particular relates to a simulation analysis method for thermal diffusion of a power battery system. Background technique [0002] Lithium-ion batteries have the characteristics of high specific energy, low self-discharge rate and long life, so they are widely used in new energy electric vehicles. However, spontaneous combustion accidents of electric vehicles characterized by thermal runaway of lithium-ion batteries emerge in endlessly, which limits the development of electric vehicles to a certain extent. In order to improve the safety of electric vehicles and slow down or even avoid the phenomenon of thermal runaway of lithium-ion batteries, major research institutions have conducted very in-depth research on thermal runaway. At present, the research on thermal runaway is still limited to the single battery level, and the simulation analysis of thermal diffusion behavior at the system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 齐创邝男男张亚军方锐栗国邓浩然裴志豪赵光磊
Owner CHINA AUTOMOTIVE TECH & RES CENT
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