阅读说明：本技术 一种极片热复合方法 (Pole piece thermal compounding method ) 是由 温在东 于 2018-08-30 设计创作，主要内容包括：本发明公开了一种极片热复合方法,包括有以下步骤：一,在左端的负极放卷的上下端设置正极放卷,在负极放卷右端设置负极裁切传送,且上下端分别设置上隔膜及下隔膜,在两正极放卷右侧设置正极裁切传送；二,在负极裁切传送及正极裁切传送的右侧设置上下隔膜、正负极组合体机构,且上下端分别设置上放保护膜装置及下放保护膜装置；三,在上下隔膜、正负极组合体机构的右端设置组合体加热机构、热复合辊压机构、组合体裁切机构；四,在热复合压辊机构的上下端分别设置上收保护膜装置及下收保护膜装置；五,在组合体裁切机构的右端设置短路测试NG剔除机构及料盒进行收料。本发明具有设计新颖、简单明了,叠片效率高,电芯安全性高的优点。(The invention discloses a pole piece thermal compounding method, which comprises the following steps: the method comprises the following steps that firstly, anode unreels are arranged at the upper end and the lower end of a cathode unreel at the left end, cathode cutting transmission is arranged at the right end of the cathode unreel, an upper diaphragm and a lower diaphragm are respectively arranged at the upper end and the lower end, and anode cutting transmission is arranged on the right sides of the two anode unreels; secondly, an upper diaphragm, a lower diaphragm, a positive electrode assembly mechanism and a negative electrode assembly mechanism are arranged on the right sides of the negative electrode cutting transmission and the positive electrode cutting transmission, and an upper protective film placing device and a lower protective film placing device are respectively arranged at the upper end and the lower end of the positive electrode cutting transmission and the negative electrode cutting transmission; thirdly, a combination heating mechanism, a thermal compound rolling mechanism and a combination cutting mechanism are arranged at the right ends of the upper and lower diaphragms and the positive and negative combination mechanisms; fourthly, an upper protective film collecting device and a lower protective film collecting device are respectively arranged at the upper end and the lower end of the thermal compound compression roller mechanism; and fifthly, arranging a short circuit testing NG rejecting mechanism and a material box at the right end of the cutting mechanism of the assembly for receiving materials. The invention has the advantages of novel design, simplicity, high lamination efficiency and high battery cell safety.)

1. A pole piece thermal compounding method is characterized by comprising the following steps:

the method comprises the following steps that firstly, anode unreels (2) are arranged at the upper end and the lower end of a cathode unreeling (1) at the left end, cathode cutting conveying (11) is arranged at the right end of the cathode unreeling (1), an upper diaphragm (12) and a lower diaphragm (13) are respectively arranged at the upper end and the lower end of the cathode cutting conveying (11), and anode cutting conveying (21) is arranged on the right sides of the two anode unreels (2);

step two, arranging an upper diaphragm, a lower diaphragm and a positive and negative electrode assembly mechanism (3) on the right sides of the negative electrode cutting conveying (11) and the positive electrode cutting conveying (21), and arranging an upper protective film placing device (31) and a lower protective film placing device (32) at the upper end and the lower end of the upper diaphragm, the lower diaphragm and the positive and negative electrode assembly mechanism (3) respectively;

thirdly, arranging a combination heating mechanism (4) at the right ends of the upper and lower diaphragms, the positive and negative combination mechanisms (3), arranging a thermal composite rolling mechanism (5) at the right end of the combination heating mechanism (4), and arranging a combination cutting mechanism (6) at the right end of the thermal composite rolling mechanism (5);

fourthly, an upper protective film collecting device (51) and a lower protective film collecting device (52) are respectively arranged at the upper end and the lower end between the thermal compound compression roller mechanism (5) and the combined body cutting mechanism (6);

and fifthly, arranging a short-circuit testing NG rejecting mechanism (7) at the right end of the assembly cutting mechanism (6), and arranging a material box (8) at the right end of the short-circuit testing NG rejecting mechanism (7) for material collection.

2. The pole piece thermal compounding method of claim 1, wherein: and in the second step, after the negative pole piece of the negative pole cutting and conveying device (11) is subjected to the upper diaphragm (12) and the lower diaphragm (13), the combination treatment of the positive pole piece and the negative pole piece of the positive pole cutting and conveying device (21) is carried out.

3. The pole piece thermal compounding method of claim 1, wherein: and in the second step, after the upper end face and the lower end face of the negative pole piece are combined with the positive pole piece, the upper protective film pasting treatment and the lower protective film pasting treatment of the upper protective film placing device (31) and the lower protective film placing device (32) are carried out.

4. The pole piece thermal compounding method of claim 1, wherein: in the fourth step, the anode and cathode assembly after the thermal compound rolling mechanism (5) is subjected to upper and lower protective film collecting treatment through the upper protective film collecting device (51) and the lower protective film collecting device (52), and then is subjected to cutting treatment through the assembly cutting mechanism (6).

Technical Field

The invention relates to the technical field, in particular to a pole piece thermal compounding method.

Background

The conventional winding type manufacturing method for the lithium ion battery has the advantages of high production efficiency, low cost, simplicity in operation and the like. The safety and the efficiency of the battery cell are very important in the manufacturing process of the conventional lithium battery, and although the safety of the battery cell is improved by the pole piece bag-making type lamination all-in-one machine in the market, the efficiency is not well improved.

Disclosure of Invention

The invention aims to provide a pole piece thermal compounding method aiming at the defects of the prior art, and the pole piece thermal compounding method has the advantages of novel and simple design, high lamination efficiency and high cell safety.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

A pole piece thermal compounding method comprises the following steps:

the method comprises the following steps that firstly, anode unreels are arranged at the upper end and the lower end of a cathode unreel at the left end, cathode cutting transmission is arranged at the right end of the cathode unreel, an upper diaphragm and a lower diaphragm are respectively arranged at the upper end and the lower end of the cathode cutting transmission, and anode cutting transmission is arranged on the right sides of the two anode unreels;

step two, arranging an upper diaphragm, a lower diaphragm and a positive and negative electrode assembly mechanism on the right side of the negative electrode cutting transmission and the positive electrode cutting transmission, and arranging an upper protective film placing device and a lower protective film placing device at the upper end and the lower end of the upper diaphragm, the lower diaphragm and the positive and negative electrode assembly mechanism respectively;

step three, arranging a combination heating mechanism at the right ends of the upper and lower diaphragms and the positive and negative combination mechanisms, arranging a thermal composite rolling mechanism at the right end of the combination heating mechanism, and arranging a combination cutting mechanism at the right end of the thermal composite rolling mechanism;

fourthly, an upper protective film collecting device and a lower protective film collecting device are respectively arranged at the upper end and the lower end between the thermal compound compression roller mechanism and the assembly cutting mechanism;

and step five, arranging a short-circuit testing NG rejection mechanism at the right end of the assembly cutting mechanism, and arranging a material box at the right end of the short-circuit testing NG rejection mechanism for receiving materials.

And in the second step, after the negative pole piece conveyed by the negative pole cutting is subjected to the upper diaphragm and the lower diaphragm, the combination treatment of the positive pole piece and the negative pole piece conveyed by the positive pole cutting is carried out.

And in the second step, after the upper end face and the lower end face of the negative pole piece are combined with the positive pole piece, the upper protective film and the lower protective film pasting treatment of the upper protective film placing device and the lower protective film placing device is carried out.

And in the fourth step, the anode and cathode assembly after the thermal compounding rolling mechanism is subjected to upper and lower protective film collecting treatment through the upper protective film collecting device and the lower protective film collecting device, and then the cutting treatment of the anode and cathode assembly is carried out through the assembly cutting mechanism.

The invention has the beneficial effects that: the invention relates to a pole piece thermal compounding method, which comprises the following steps: the method comprises the following steps that firstly, anode unreels are arranged at the upper end and the lower end of a cathode unreel at the left end, cathode cutting transmission is arranged at the right end of the cathode unreel, an upper diaphragm and a lower diaphragm are respectively arranged at the upper end and the lower end of the cathode cutting transmission, and anode cutting transmission is arranged on the right sides of the two anode unreels; step two, arranging an upper diaphragm, a lower diaphragm and a positive and negative electrode assembly mechanism on the right side of the negative electrode cutting transmission and the positive electrode cutting transmission, and arranging an upper protective film placing device and a lower protective film placing device at the upper end and the lower end of the upper diaphragm, the lower diaphragm and the positive and negative electrode assembly mechanism respectively; step three, arranging a combination heating mechanism at the right ends of the upper and lower diaphragms and the positive and negative combination mechanisms, arranging a thermal composite rolling mechanism at the right end of the combination heating mechanism, and arranging a combination cutting mechanism at the right end of the thermal composite rolling mechanism; fourthly, an upper protective film collecting device and a lower protective film collecting device are respectively arranged at the upper end and the lower end between the thermal compound compression roller mechanism and the assembly cutting mechanism; and step five, arranging a short-circuit testing NG rejection mechanism at the right end of the assembly cutting mechanism, and arranging a material box at the right end of the short-circuit testing NG rejection mechanism for receiving materials. According to the design of the method, the negative pole piece layer, the diaphragm layer and the positive pole piece layer are thermally compounded into a whole and cut, and the detected bad products are removed through the short-circuit testing NG removing mechanism, so that the lamination efficiency is high, and the cell safety is high; therefore, the invention has the advantages of novel and simple design, high lamination efficiency and high battery cell safety.

Drawings

The invention will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.

Fig. 1 is a schematic diagram of the framework of the present invention.

Detailed Description

The present invention will be described below with reference to specific embodiments.

As shown in fig. 1, a pole piece thermal compounding method includes the following steps:

step one, arranging anode unreels 2 at the upper and lower ends of a cathode unreel 1 at the left end, arranging a cathode cutting conveyer 11 at the right end of the cathode unreel 1, arranging an upper diaphragm 12 and a lower diaphragm 13 at the upper and lower ends of the cathode cutting conveyer 11 respectively, and arranging an anode cutting conveyer 21 at the right sides of the two anode unreels 2;

step two, arranging an upper diaphragm, a lower diaphragm and a positive and negative electrode assembly mechanism 3 on the right sides of the negative electrode cutting transmission 11 and the positive electrode cutting transmission 21, and arranging an upper protective film placing device 31 and a lower protective film placing device 32 on the upper end and the lower end of the upper diaphragm, the lower diaphragm, the positive and negative electrode assembly mechanism 3 respectively;

thirdly, arranging a combined body heating mechanism 4 at the right end of the upper and lower diaphragms, the positive and negative combined body mechanisms 3, arranging a thermal composite rolling mechanism 5 at the right end of the combined body heating mechanism 4, and arranging a combined body cutting mechanism 6 at the right end of the thermal composite rolling mechanism 5;

fourthly, an upper protective film collecting device 51 and a lower protective film collecting device 52 are respectively arranged at the upper end and the lower end between the thermal compound compression roller mechanism 5 and the assembly cutting mechanism 6;

step five, a short circuit testing NG rejecting mechanism 7 is arranged at the right end of the assembly cutting mechanism 6, and a material box 8 is arranged at the right end of the short circuit testing NG rejecting mechanism 7 to receive materials.

Further, in the second step, after the negative electrode sheet of the negative electrode cutting conveyer 11 is subjected to the upper diaphragm 12 and the lower diaphragm 13, the positive electrode sheet and the negative electrode sheet of the positive electrode cutting conveyer 21 are subjected to the combination treatment.

Further, in the second step, after the upper and lower end faces of the negative electrode plate are combined with the positive electrode plate, the upper and lower protective film pasting treatment of the upper protective film placing device 31 and the lower protective film placing device 32 is performed.

Further, in the fourth step, the positive and negative electrode assembly after the thermal compound rolling mechanism 5 is subjected to upper and lower protective film collecting processing by the upper protective film collecting device 51 and the lower protective film collecting device 52, and then subjected to cutting processing by the assembly cutting mechanism 6.

According to the design of the method, a layer of negative pole piece, two layers of diaphragms and two layers of positive pole pieces are thermally compounded into a whole and cut, and the detected bad products are removed through a short-circuit testing NG removing mechanism 7, so that the lamination efficiency is high, and the safety of the battery cell is high; therefore, the invention has the advantages of novel and simple design, high lamination efficiency and high battery cell safety.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.