Calculation method, device and equipment for parameter of battery roll core and storage medium

Abstract

The embodiment of the invention discloses a calculation method, device and equipment for a parameter of a battery roll core and a storage medium. The calculation method comprises the following steps of calculating a helical line parameter according to a preset parameter of the battery roll core, and obtaining helical line information of a negative pole plate of the battery roll core by combining ahelical line model; drawing a roll core structure model map according to the preset parameter and the helical line information of the negative pole plate, arranging positions of a positive tab and anegative tab according to a preset rule, and acquiring an included angle between the tabs, an included angle between ending positions of the positive tag and a positive pole plate and a radius of a circle where the positive tab is located; acquiring a diameter of the roll core where the positive tab and the negative tag are located according to the roll core structure model map and a thickness ofan assembly material; and determining cutting sizes of the positive pole plate and the negative pole plate, a positive tab welding position and a negative tab welding position according to the batteryroll core. By the calculation method, a calculation error caused by a traditional concentric model can be prevented, the calculation quantity is reduced, and the pole plate ending positions, the tabpositions and an angle between the tabs are accurately judged.

Description

technical field [0001] The present invention relates to the technical field of battery winding cores, in particular to a calculation method, device, equipment and storage medium for parameters of battery winding cores. Background technique [0002] As an energy source with high energy density, batteries have attracted widespread attention from all over the world. First-class equipment manufacturers in Europe, America, Japan and South Korea have started the research and development and industrialization of cylindrical power battery related technologies in the early years. [0003] Usually, the winding core of the battery is formed by spirally winding and laminating the positive electrode sheet, negative electrode sheet, two-layer separator, positive electrode tab, negative electrode tab, and protective tape. In order to ensure that the winding core can be directly assembled into the casing, the diameter of the winding core needs to be within the specified value range. In ord...

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Problems solved by technology

[0004] When using the concentric circle model to calculate the diameter of the winding core, not only the amount of calculation is large, but also in the actual winding length of each circle, the calculated length of the concentric circle model has deviations, and the more the number of winding turns, the greater the cumulative deviation, which cannot be achieved Accurately analyze the end position of the pole piece

In addition, the concentric circle model can only be used to calculate the maximum diameter when calculating the core diameter, and it cannot accurately calculate the end position of the pole piece, the angle between the tabs and the welding position of the tab in the core structure.

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