阅读说明：本技术 一种电池极片制作的工艺方法 (Process method for manufacturing battery pole piece ) 是由 黄春章 邓明能 于 2019-12-03 设计创作，主要内容包括：本发明一种电池极片制作的工艺方法通过先模切(或切割)后辊压(或辊轧、压延)的工艺方法,即主要通过激光切割装置先对极片进行切割加工,然后再通过对辊或多辊辊压(或辊轧、压延)装置对极片进行辊轧加工,避免极片的极耳区与膜片区材料延展率不同,带来的极片压制过程中打皱、断带等一系列问题,有效改善极片品质,提升生产良率及效率,大大降低极片制造成本。(The invention relates to a process method for manufacturing a battery pole piece, which is characterized in that a process method of firstly die cutting (or cutting) and then rolling (or rolling and calendering) is adopted, namely, the pole piece is firstly cut and processed by a laser cutting device, and then the pole piece is rolled and processed by a double-roll or multi-roll rolling (or rolling and calendering) device, so that a series of problems of wrinkling, belt breakage and the like in the pole piece pressing process caused by different material extension rates of a pole lug area and a diaphragm area of the pole piece are avoided, the quality of the pole piece is effectively improved, the production yield and efficiency are improved, and the manufacturing cost of the pole piece is greatly reduced.)

1. The process method for manufacturing the battery pole piece is characterized in that the process method is a pole piece manufacturing process of firstly die cutting (or cutting) and then rolling (or rolling or calendering).

2. The process method for manufacturing the battery pole piece is characterized in that the die cutting (or cutting) and the rolling (or rolling and calendering) are two independent processes or are integrated into one process. The device is realized by two sets of corresponding relatively independent manufacturing devices or one set of integrated manufacturing device.

3. The process method for manufacturing the battery pole piece is characterized in that the die cutting (or cutting) is to cut the pole piece by a laser cutting device.

4. The process method for manufacturing the battery pole piece is characterized in that the rolling (or rolling and calendering) is to roll the pole piece by a double-roll or multi-roll rolling (or rolling and calendering) device.

Technical Field

The invention relates to the field of manufacturing of lithium ion battery pole pieces, in particular to pole piece pressing and laser die cutting.

Background

China highly attaches importance to the development of new energy automobiles, and takes the new energy automobiles as a strategic emerging industry which is mainly supported. Under the guidance of the policy, the new energy vehicles develop rapidly. However, with the back-hill of subsidy policy and the opening of the market of imported brands, the key core of "curve overtaking" in the automobile industry in China can be realized, and the key core is focused on the product quality, production efficiency and manufacturing cost of the power battery.

The core of the power battery is a pole piece, the traditional manufacturing process of the battery pole piece comprises the steps of pulping, coating, rolling (or rolling and calendering), and laser die cutting (or cutting) … …, and the main process is characterized in that the pole piece is firstly pressed, and then the tab of the pole piece is manufactured through die cutting (or cutting). Because the extension rates of materials of the pole lug area and the diaphragm area of the pole piece are different, a series of problems such as wrinkling, belt breakage and the like often occur in the pole piece pressing process, the yield is low, the efficiency is low, the quality is poor, the cost is high, the manufacturing level of the lithium ion battery pole piece meets a bottleneck, the development of a power battery is severely restricted, and the realization of a new energy automobile strategy is further influenced.

Disclosure of Invention

Therefore, it is necessary to provide a process for manufacturing a battery pole piece, which is a process for manufacturing a battery pole piece by pulping-coating-die cutting (or cutting) -rolling (or rolling, calendering) or pulping-coating-die cutting (or cutting) -rolling (or rolling, calendering) … …, wherein the die cutting (or cutting) is performed firstly and then the rolling (or rolling, calendering) is performed, so that a series of problems of wrinkling, tape breaking and the like in the pole piece pressing process caused by different material extension rates of a pole lug area and a diaphragm area are avoided, the quality of the pole piece is effectively improved, the production yield and efficiency are improved, and the manufacturing cost of the pole piece is greatly reduced.

In order to solve the existing problems, the invention discloses a process method for manufacturing a battery pole piece, which is a pole piece manufacturing process that firstly die cuts (or cuts) and then rolls (or rolls);

further, according to the process for manufacturing the battery pole piece, the die cutting (or cutting) and the rolling (or rolling and calendering) can be two independent processes, and correspond to two sets of relatively independent manufacturing devices. Or an integrated process corresponding to a set of integrated manufacturing devices;

further, the invention relates to a process method for manufacturing a battery pole piece, wherein the die cutting (or cutting) is to cut and process the pole piece through a laser cutting device;

further, the invention relates to a process method for manufacturing a battery pole piece, wherein the rolling (or rolling and calendering) is to roll the pole piece by a double-roll or multi-roll rolling (or rolling and calendering) device;

the invention has the beneficial effects that: the invention relates to a process method for manufacturing a battery pole piece, which is a process method for firstly carrying out die cutting (or cutting) and then carrying out rolling (or rolling and rolling) by pulping, coating, die cutting (or cutting) and rolling (or rolling and rolling) … …, namely, a laser cutting device is mainly used for firstly carrying out cutting processing on the pole piece, and then a pair-roller or multi-roller rolling (or rolling and rolling) device is used for carrying out rolling processing on the pole piece, so that a series of problems of wrinkling, tape breaking and the like in the pole piece pressing process caused by different extensibility of a pole ear area and a diaphragm area are avoided, the quality of the pole piece is effectively improved, the production yield and efficiency are improved, and the manufacturing cost of the pole piece is greatly reduced.

Drawings

FIG. 1 is a comparison of a process for manufacturing a battery electrode plate according to the present invention and a flow chart of a conventional process.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific functions attained by the present invention, the following detailed description of the present invention will be read in conjunction with the accompanying drawings.

Reference is made to the accompanying drawings.

The invention discloses a process method for manufacturing a battery pole piece, as shown in figure 1, the process method for manufacturing the battery pole piece of the invention firstly cuts (or cuts) the pole piece and then rolls (or rolls and rolls), namely, the laser cutting device is mainly used for cutting the pole piece, and then the roll rolling device or the roll rolling device is used for roll processing the pole piece, so that a series of problems of crumpling, strip breakage and the like in the pole piece pressing process caused by different material extensibility of a pole lug area and a diaphragm area of the pole piece are avoided, the quality of the pole piece is effectively improved, the production yield and efficiency are improved, and the manufacturing cost of the pole piece is greatly reduced.