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Pole piece forming device and pole piece forming method

A forming device and pole piece technology, applied in electrode forming, electrode manufacturing, electrode rolling/calendering, etc., can solve the problems of uneven winding of pole piece S, different elongation, easy wrinkling of blank area S3, etc., and achieve Effects of avoiding wrinkling or warping, reducing elongation variance, and reducing risk of breakage

Pending Publication Date: 2021-02-02
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology

However, in the process of rolling the pole piece, the blank area S3 is not under pressure, so it will not elongate, while the area of ​​the substrate S1 coated with the coating S2 will be elongated by compression, thus causing the substrate Different areas of S1 have different elongation rates, and the blank area S3 is easy to wrinkle, which will cause uneven winding of the pole piece S

Method used

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  • Pole piece forming device and pole piece forming method
  • Pole piece forming device and pole piece forming method
  • Pole piece forming device and pole piece forming method

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Embodiment Construction

[0067] In order to make the purpose, technical solution and advantages of the present application clearer, the present application 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 application, and are not intended to limit the present application.

[0068] In the description of this application, unless otherwise clearly specified and limited, the terms "first", "second", "third" and so on are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; The term "plurality" means more than two (including two); unless otherwise specified or stated, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection or a detachable connection, or Integral connection, or electrical connection, or signal connection; "connectio...

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Abstract

The invention provides a pole piece forming device and a pole piece forming method. The pole piece forming device comprises an unwinding mechanism, a winding mechanism, a roller mechanism, a stretching mechanism and an extension roller, wherein the unwinding mechanism is used for arranging a pole piece, the winding mechanism is used for winding the pole piece, and the roller mechanism, the stretching mechanism and the extension roller are arranged on a belt conveying path of the pole piece; one of the stretching mechanism and the extending roller is arranged on the upstream of the roller mechanism, and the other one of the stretching mechanism and the extending roller is arranged on the downstream of the roller mechanism; the roller mechanism comprises a first roller and a second roller; the stretching mechanism comprises a compression roller assembly and a stretching assembly; the compression roller assembly is located on the upstream of the stretching assembly and comprises a third roller and a fourth roller; the stretching assembly comprises a fifth roller and a sixth roller in the direction parallel to the axial direction of the fifth roller, and the size of the fifth roller islarger than that of the sixth roller; and the extension roller comprises a roller body and a protruding part, and the protruding part surrounds the roller body.

Description

technical field [0001] The invention relates to the field of battery production, in particular to a pole piece forming device and a pole piece forming method. Background technique [0002] At present, major car manufacturers have higher and higher requirements for electric vehicle batteries. One of the most important points is the energy density of the battery. will increase accordingly. [0003] In the production process of the battery pole piece, it is usually necessary to roll the pole piece to increase the compaction density of the pole piece, thereby increasing the energy density of the battery. refer to figure 1 , the existing pole piece S includes a substrate S1 and a coating S2 disposed on the substrate S1, the area of ​​the substrate S1 that is not coated with the coating S2 forms a blank area S3 of the pole piece S, and the substrate S1 has a coating The area with the coating S2 and the coating S2 form the coated area S4 of the pole piece S. However, in the pro...

Claims

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Application Information

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IPC IPC(8): B30B3/00B30B15/00H01M4/04
CPCB30B3/00B30B3/005B30B15/00H01M4/0433H01M4/0435Y02E60/10
Inventor 邹建琨曹警予李世松虞永生汤克寒李克强
Owner CONTEMPORARY AMPEREX TECH CO
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