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Winding device and method for winding winding core

A winding device and winding technology, which is applied in the direction of winding/folding electrodes, assembling battery machines, structural parts, etc., can solve the problems of affecting the service life of the battery and not being able to dissipate heat.

Active Publication Date: 2022-06-03
XIAMEN HAICHEN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no gap between the winding needle and the diaphragm. When the battery heats up during charging and discharging, it cannot dissipate the generated heat quickly, and there is a certain resistance when the winding core drives the winding needle to release pressure, thus affecting the battery life. overall service life

Method used

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  • Winding device and method for winding winding core
  • Winding device and method for winding winding core
  • Winding device and method for winding winding core

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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present invention will be described in detail below.

[0033] Reference below Figure 1-Figure 3 The winding device 100 according to the embodiment of the first aspect of the present invention is described, and the present invention also proposes a method of winding the core 10 by using the above-described winding device 100 .

[0034] like figure 1 and figure 2 As shown, the winding device 100 includes: a winding main body (not shown in the drawings), a winding needle 20 and a heating element (not shown in the drawings).

[0035] The winding needle 20 is inserted into the winding body and rotated under the driving of the winding body. The winding needle 20 has a space for sandwiching the septum.

[0036] That is to say, during the winding process, the winding needle 20 can clamp the...

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Abstract

The invention discloses a winding device and a method for winding a winding core. The winding device comprises a winding main body; the winding needle is inserted into the winding main body and rotates under the driving of the winding main body; and the heating piece is arranged on the winding needle or the winding main body so as to heat the diaphragm through the winding needle. After winding is completed, the heating piece is used for heating, the clamped diaphragm can be melted, two layers or multiple layers of diaphragms in the winding core are bonded together, a center hole without diaphragm blocking and a new diaphragm layer are formed in the winding core, product production and manufacturing are facilitated, the consistency quality is good, and after the diaphragms in the winding core are melted and bonded, the diaphragm in the winding core can not be blocked by the diaphragm. And a central hole with certain strength is formed by cooling and can be used as a vent hole when the battery cell is actually used, so that the cost is saved, and the product quality of the battery cell is effectively improved.

Description

technical field [0001] The present invention relates to the technical field of batteries, and in particular, to a winding device and a method for winding a winding core. Background technique [0002] In the process of preparing the battery, when the winding machine completes the winding action, the separator inside the winding core will form a figure-eight or Taiji-shaped obstacle at the position of the central hole. Reaming at this time may change the winding tension inside the core, and the reaming effect is inconsistent, which may cause displacement between the pole piece and the diaphragm inside the core, affecting the product quality of the core. [0003] In the related art, some use a cylindrical winding needle made of an insulating rigid material. The winding needle is wound in the diaphragm and the tab and is encapsulated into the battery case with the battery cell, which improves the deformation of the pole piece of the battery core caused by the winding tension. I...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M50/403
CPCH01M10/0409H01M10/0431H01M50/403Y02P70/50Y02E60/10
Inventor 李圣桃张亮亮张男易梓琦吴祖钰
Owner XIAMEN HAICHEN NEW ENERGY TECH CO LTD
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