阅读说明：本技术 一种锂离子电池卷芯包胶方法 (Method for encapsulating lithium ion battery roll core ) 是由 邱峰 周德清 王永军 张前兵 王国超 于 2019-10-14 设计创作，主要内容包括：本发明提供一种锂离子电池卷芯包胶方法,包括以下步骤：先将待入壳电芯通过毛刷辊进行滚刷,以取出待入壳电芯表面附着的杂物,将待入壳电芯置于包胶机器中,包胶机器先对待入壳电芯的A面进行贴胶,在贴胶时,使用压辊对贴胶后的待入壳电芯的A面进行压平,将卷芯翻转后,B面进行贴胶,包胶机器对待入壳电芯的B面进行贴胶,在贴胶时,使用压辊对贴胶后的待入壳电芯的B面进行压平,用胶带对卷芯两端贴胶进行加固。该锂离子电池卷芯包胶方法,提供的方法能够减小卷芯入壳阻力,有效防止卷芯隔膜擦伤、擦破,提高电芯安全性能。(The invention provides a method for encapsulating a lithium ion battery roll core, which comprises the following steps: will wait to go into the shell electricity core and carry out the round brush through the brush roller with taking out and wait to go into the adnexed debris in shell electricity core surface, will wait to go into the shell electricity core and arrange in the rubber coating machine, the rubber coating machine treats the A face of going into the shell electricity core earlier and carries out the rubberizing, when the rubberizing, use the compression roller to flatten the A face of waiting to go into the shell electricity core after the rubberizing, will roll up the core upset back, the B face carries out the rubberizing, the B face of going into the shell electricity core is treated to the rubber coating machine and carries out the rubberizing, when the rubberizing, use the compression roller to flatten the B face of waiting to go into the shell electricity core after the rubberizing, it. The method for encapsulating the lithium ion battery roll core can reduce the resistance of the roll core entering the shell, effectively prevent the roll core diaphragm from being scratched and broken, and improve the safety performance of the battery core.)

1. A method for encapsulating a lithium ion battery roll core is characterized by comprising the following steps:

1) firstly, rolling and brushing the to-be-shelled battery cell through a brush roller to take out sundries attached to the surface of the to-be-shelled battery cell;

2) placing the to-be-shelled battery cell into a rubber coating machine, wherein the rubber coating machine firstly pastes the surface A of the to-be-shelled battery cell, and during glue pasting, flattening the surface A of the to-be-shelled battery cell after glue pasting by using a compression roller;

3) after the winding core is turned over, the surface B is pasted with glue, the glue coating machine pastes the surface B of the to-be-shelled battery cell with glue, and the surface B of the to-be-shelled battery cell after being pasted with glue is flattened by a compression roller during gluing;

4) and reinforcing the rubberizing of the two ends of the roll core by using an adhesive tape.

2. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: in the step (1), the A, B surface of the cell to be shelled has no foreign matter adhesion, so that the quality of the adhesive tape on the A, B surface of the cell to be shelled is ensured.

3. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: and (2) keeping the surface of the A-side adhesive of the cell to be cased free from the phenomena of bubbles, wrinkles, upwarping and the like.

4. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: and (3) the rubberizing of the step (2) extends to the side face of the winding core.

5. The method for encapsulating the lithium ion battery winding core according to claim 4, wherein the method comprises the following steps: and (3) the length range of the rubberizing extending to the side face of the winding core in the step (2) is 3-5cm, the flatness of the rubberizing edge is ensured, the side surface rubberizing is tightly attached to the side edge of the shell-to-be-embedded electric core, and the rubberizing surface is ensured to have no phenomena of bubbles, folds or upwarps and the like.

6. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: and (3) keeping the surface of the B-side adhesive of the cell to be cased free of bubbles, wrinkles or upwarps and the like.

7. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: and (4) the rubberizing of the step (3) extends to the side face of the winding core.

8. The method for encapsulating the lithium ion battery winding core according to claim 7, wherein: and (3) the length range of the rubberizing extending to the side face of the winding core in the step (3) is 3-5cm, the flatness of the edge of the rubberizing is ensured, the side surface rubberizing is tightly attached to the side edge of the shell-to-be-embedded electric core, and the surface of the rubberizing is ensured to have no phenomena of bubbles, folds or upwarps and the like.

9. The method for encapsulating the lithium ion battery winding core according to claim 1, wherein the method comprises the following steps: and (4) the reinforcing adhesive tape needs to surround the winding core for 1-3 circles, the outer end of A, B surface adhesive of the shell battery cell to be filled is completely wrapped by the reinforcing adhesive tape, and meanwhile, the wrapped reinforcing adhesive tape is compacted by a compression roller.

10. The method for encapsulating the lithium ion battery winding core according to claim 9, wherein: and (4) the section of the reinforced adhesive tape in the step (3) needs to be smooth and burr-free, and the edge of the reinforced adhesive tape is free from curling, bubbles and edge warping.

Technical Field

The invention relates to the technical field of lithium ion batteries, in particular to a method for encapsulating a lithium ion battery roll core.

Background

The power lithium ion battery is mainly applied to the fields of automobiles, ships, energy storage and the like, and due to the pollution and the non-regenerability of fossil energy, the power lithium ion battery can be rapidly developed in the field of new energy in the future, and the market demand is greatly increased. Taking a common square power lithium ion battery in the market as an example, in the assembly and production process, a winding core is easy to rub against a shell when entering the shell, so that the phenomenon of scratching and scratching of a diaphragm of the winding core is caused. The safety performance of the battery is affected.

Disclosure of Invention

The invention aims to solve the technical problem of providing a method for encapsulating a lithium ion battery roll core, which aims to solve the problems that the square power lithium ion battery provided in the background technology is easy to rub a shell when the roll core is placed into the shell in the assembly and production process, so that the roll core diaphragm is scratched and broken, and the safety performance of the battery is influenced.

The technical problem solved by the invention is realized by adopting the following technical scheme: a method for encapsulating a lithium ion battery roll core comprises the following steps:

1) firstly, rolling and brushing the to-be-shelled battery cell through a brush roller to take out sundries attached to the surface of the to-be-shelled battery cell;

2) placing the to-be-shelled battery cell into a rubber coating machine, wherein the rubber coating machine firstly pastes the surface A of the to-be-shelled battery cell, and during glue pasting, flattening the surface A of the to-be-shelled battery cell after glue pasting by using a compression roller;

3) after the winding core is turned over, the surface B is pasted with glue, the glue coating machine pastes the surface B of the to-be-shelled battery cell with glue, and the surface B of the to-be-shelled battery cell after being pasted with glue is flattened by a compression roller during gluing;

4) and reinforcing the rubberizing of the two ends of the roll core by using an adhesive tape.

Furthermore, in the step (1), the A, B surface of the cell to be shelled has no foreign objects attached, so that the quality of the adhesive tape on the A, B surface of the cell to be shelled is ensured.

Further, the step (2) keeps the surface of the A-side adhesive of the cell to be packaged free of bubbles, wrinkles or upwarps and the like.

Further, the rubberizing of step (2) extends to the side of the roll core.

Furthermore, the length range of the rubberizing extending to the side face of the winding core in the step (2) is 3-5cm, the flatness of the rubberizing edge is guaranteed, the side rubberizing is made to be attached to the side edge of the electric core to be placed into the shell, and the rubberizing surface is guaranteed to be free of bubbles, wrinkles or upwarping and the like.

Further, the step (3) keeps the surface of the B-side adhesive of the cell to be packaged without the phenomena of bubbles, folds, tilting and the like.

Further, the rubberizing of step (3) extends to the side of the roll core.

Furthermore, the length range of the rubberizing extending to the side face of the winding core in the step (3) is 3-5cm, the flatness of the rubberizing edge is guaranteed, the side rubberizing is made to be attached to the side edge of the electric core to be placed into the shell, and the rubberizing surface is guaranteed to be free of bubbles, wrinkles or upwarping and the like.

Furthermore, the number of turns of the reinforcing adhesive tape in the step (4) which needs to surround the winding core is 1-3 turns, the outer end of the A, B face adhesive tape of the shell battery cell to be filled is completely wrapped by the reinforcing adhesive tape, and meanwhile, the wrapped reinforcing adhesive tape is compacted by the compression roller.

Furthermore, the section of the reinforced adhesive tape in the step (3) needs to be smooth and burr-free, and the edge of the reinforced adhesive tape is free from curling, bubbles and edge warping.

Compared with the prior art, the invention has the beneficial effects that: the method for encapsulating the lithium ion battery roll core,

1) the provided method can reduce the resistance of the winding core to the shell;

2) effectively prevent to roll up scotch of core diaphragm, rub and break, improve electric core security performance.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.