Winding needle mechanism and lithium battery winding equipment
A needle winding technology, which is applied in the field of needle winding mechanism and lithium battery winding equipment, can solve the problem of increasing the configuration cost of battery winding equipment, restricting the winding forming efficiency of square batteries, and reducing the winding efficiency of equipment, etc. question
Active Publication Date: 2022-04-05
DONGGUAN ZEYUAN MACHINE
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Problems solved by technology
On the one hand, due to the large change in the linear velocity of the square winding needle during the winding process, the acceleration changes greatly, and the excessive acceleration will easily cause impact on the winding drive device, so the square winding needle cannot achieve high-speed winding , which seriously restricts the winding forming efficiency of square cells
On the other hand, as far as round batteries and square batteries are concerned, since the winding needles matched with the two cannot be used interchangeably, they are not universal, which will not only increase the configuration cost of the battery winding equipment, but also cause certain Reduce the winding efficiency of the equipment to a certain extent
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[0046] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the application are not shown or described in the description, this is to avoid the core part of the application being overwhelmed by too many descriptions, and for those skilled in the art, it is necessary to describe these operations in detail Relevant operations are not necessary, and they can fully understand the relevant operations according to the description in the specification and genera...
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The invention discloses a winding needle mechanism and lithium battery winding equipment, the winding needle mechanism comprises a winding needle winding and a control assembly, the winding needle winding comprises two auxiliary winding needles and two material clamping winding needles, and the control assembly is respectively connected with the auxiliary winding needles and the material clamping winding needles; the control assembly is configured to drive the two auxiliary winding needles to be away from each other in a back-to-back mode and drive the two material clamping winding needles to be close to each other in an opposite mode so that the winding needle set can be deformed into a cylindrical shape. The control assembly is further configured to drive the two auxiliary winding needles to be away from each other in a back-to-back mode and drive the two material clamping winding needles to be close to each other in an opposite mode, so that the winding needle set is deformed into an elliptic cylinder shape. The control assembly is used for regulating and controlling the motion forms and the stop positions of the four winding needles which are opposite in pairs, so that the overall outline of the winding needle group can be converted and deformed between a cylindrical shape and an elliptic cylindrical shape, a battery cell material belt can be wound and formed into a circular battery cell, and the formed circular battery cell can be stretched into a square battery cell; therefore, not only can the forming efficiency of the battery cell be greatly improved, but also the universality of the winding needle mechanism can be enhanced.
Description
technical field [0001] The invention relates to the field of battery production equipment, in particular to a needle winding mechanism and lithium battery winding equipment. Background technique [0002] With the rapid development of new energy technologies, the application of lithium batteries is becoming more and more extensive. As far as the lithium battery cell is concerned, it is usually formed by winding and combining positive electrode foil, negative electrode foil, separator paper, etc. in a specific layer sequence; and depending on the shape of the battery, the cell has a circular cell and square cells. [0003] At present, most of the industry uses cylindrical round rolls for winding and forming of round cells, and elliptical cylindrical rolls for winding and forming of square cells. On the one hand, due to the large change in the linear velocity of the square winding needle during the winding process, the acceleration changes greatly, and the excessive accelerat...
Claims
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IPC IPC(8): H01M10/0587H01M10/0525
CPCY02E60/10Y02P70/50
Inventor 江军发李新标陈云
Owner DONGGUAN ZEYUAN MACHINE