The utility model discloses a coating head of a slit extrusion coating machine, which comprises a fixed connecting upper and lower dies. A coating head gasket is arranged between the upper and lower dies. The coating head gasket comprises at least one opening, and the opposite sides of the opening of the opening are respectively provided with an inward extending blocking block, the thickness of the blocking block is less than the thickness of the coating head gasket. The blocking block is set on the edge of the gap of the gasket of the coating head, which can reduce the velocity and flow rate of the slurry flowing at the gap edge, and achieve the function of thinning the edge thickness of the electrode film, thus making the slurry coated on the coating head more uniform, which is conducive to improving the quality rate of battery production and the safety of the battery.
【技术实现步骤摘要】
狭缝式挤压涂布机的涂布头
本技术涉及涂布设备，尤其涉及狭缝式挤压涂布机的涂布头。
技术介绍
为了节能减排、发展低碳经济，国家大力推崇移动电能动力代替燃油动力、锂电储能代替铅酸储能的新能源发展方向。电池生产是关键一环，其中涂布生产设备是电池生产的关键设备，涂布机的作用是在电极板基材上涂上正、负极材料，涂上的正、负极材料的均匀性对电池容量大小及电池的安全性有极大影响。狭缝式挤压涂布机是涂布正、负极材料常用设备，如图1a和1b所示，狭缝式挤压涂布机的涂布头包括上模1和下模2，上模1和下模2之间设有涂布头垫片3，涂布头垫片3的作用是控制电极膜4的宽度，涂布头垫片3包括至少一个出料区5(出料区5的宽度即为电极膜4的宽度)，现有技术中涂布头垫片3的出料区5呈矩形的豁口状，而由于涂布头垫片3的出料区5边缘位置浆料的表面张力与出料区5中央区域的表面张力不一致，因此会出现出料区5边缘位置的浆料流速比出料区5中央区域的浆料流速快的现象，从而让涂布后的电极膜4出现两侧高、中央低的情况(如图1c所示)，从而使得正(负)极材料涂布不均匀、引发后续电池不合格、电池安全性差等诸多问题。
技术实现思路
...
【技术保护点】
1.狭缝式挤压涂布机的涂布头，包括固定连接的上模和下模，上模和下模之间设有涂布头垫片，涂布头垫片包括至少一个豁口，其特征在于：所述豁口的开口处的相对两侧分别设有朝内延伸的阻挡块，所述阻挡块的厚度小于所述涂布头垫片的厚度。
【技术特征摘要】
1.狭缝式挤压涂布机的涂布头，包括固定连接的上模和下模，上模和下模之间设有涂布头垫片，涂布头垫片包括至少一个豁口，其特征在于：所述豁口的开口处的相对两侧分别设有朝内延伸的阻挡块，所述阻挡块的厚度小于所述涂布头垫片的厚度。2.根据权利要求1所述的狭缝式挤压涂布机的涂布头，其特征在于：所述阻挡块呈矩形。3.根据权利要求1所述...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。