Battery winding needle structure

Abstract

The invention discloses a battery winding needle structure which comprises a first needle body and a second needle body and also comprises a vertical adjusting component and a transverse adjusting component, wherein the vertical adjusting component controls the opening and closing of the first needle body and the second needle body in the vertical direction; the transverse adjusting component controls the displacement movement of the first needle body and the second needle body in the transverse direction. According to the winding needle structure, positive and negative pole pieces and a diaphragm can simultaneously enter a winding needle, thus improving the cell winding efficiency and quality.

Description

technical field [0001] The invention relates to battery winding equipment, in particular to a battery winding needle structure. Background technique [0002] The winding needle is a key component in the winding production of lithium batteries, especially for the winding of power lithium batteries. The structure and accuracy of the winding needle directly affect the quality of the winding core of the lithium battery, which in turn affects the safety and consistency of the lithium battery. and service life. [0003] Chinese patent ZL201120415298.4 discloses a precision needle winding structure for a lithium-ion battery cell winding machine, including a body, which includes a needle winding seat, a fixed left needle, and a moving right needle, which consist of a fixed left needle and a moving right needle. The clamp body is arranged parallel to each other, the inner end of the fixed left needle is fixedly connected with the needle roll seat, and the inner end of the moving rig...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent ZL201120415298.4 discloses a precision needle winding structure for a lithium-ion battery cell winding machine, including a body, which includes a needle winding seat, a fixed left needle, and a moving right needle, which consist of a fixed left needle and a moving right needle. The clamp body is arranged parallel to each other, the inner end of the fixed left needle is fixedly connected with the needle roll seat, and the inner end of the moving right needle is snapped and positioned with the needle roll seat. The inner end of the moving right needle is provided with a toggle wedge groove extending out of the winding needle seat, and the toggle wedge groove can slide laterally relative to the fixed left needle in conjunction with the power device; Winding can ensure its safety, consistency, etc., but for the winding of large-scale batteries and power batteries, because the process of this structure is to insert one pole piece first, and then enter the other pole piece after winding a few laps, the formal process begins. Winding, in this case, when the winding is completed, the tail end of the pole piece inserted later will be longer, and the ending will be uneven at the end, resulting in poor alignment and other battery quality problems

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