Thermal simulation analysis method of lithium ion battery of multi-layer flaky structure
A lithium-ion battery, multi-layer sheet technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the effectiveness needs to be improved, the physical properties and thermal characteristics cannot be fully reflected, and the research and development of batteries cannot be carried out. Designers provide other questions to achieve the effect of quick and easy calculation, convenient comparison and screening, and guaranteed accuracy
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[0048] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0049] Based on the electrical performance data such as battery equilibrium electromotive force and discharge process open circuit voltage measured under controlled ambient temperature, use parametric design language to establish a battery entity model with detailed structure down to the battery separator, active material layer and metal foil layer and divide it into finite elements Grid, according to the electrical performance measurement results, the key model parameter of the battery heat generation rate that can change with time can be accurately given, and other corresponding boundary conditions and initial conditions are added in combination with the specific operating conditions of the battery for transient calculations. The calculation results can accurately analyze the transient temperature distribution of any fine structure inside the c...
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