US 12,294,095 B2
Jet printing process for protective layer of upper cover of lithium battery
Zhenxing Zhou, Dongguan (CN); and Wancheng Zhou, Dongguan (CN)
Assigned to GUANGDONG CLIMAX SMARTECH CO., LTD, Zhuhai (CN)
Filed by GUANGDONG CLIMAX SMARTECH CO., LTD, Zhuhai (CN)
Filed on Nov. 22, 2024, as Appl. No. 18/956,280.
Application 18/956,280 is a continuation of application No. PCT/CN2022/110541, filed on Aug. 5, 2022.
Prior Publication US 2025/0087796 A1, Mar. 13, 2025
Int. Cl. H01M 50/155 (2021.01); B41J 29/13 (2006.01)
CPC H01M 50/155 (2021.01) [B41J 29/13 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A jet printing process for protective layer of upper cover of lithium battery, including the upper cover of lithium battery to be jet printed, the upper cover end face of lithium battery has a width of W and a length of L, and the upper cover end face of lithium battery is provided with a non jet printing portion, the distance between the lower side of upper cover end face and the lower side of non jet printing portion is H, and the distance between the upper side of upper cover end face of lithium battery and the upper side of non jet printing portion is also H, comprising the following steps:
1) dividing the jet printing region on the upper cover end face of lithium battery into a first jet printing region and a second jet printing region, wherein the first jet printing region is a square area between the lower side of the upper cover end face of lithium battery and the lower side of the non jet printing portion, the square area is L in length and H in width and, except for the first jet printing region, the remaining area of jet printing region is the second jet printing region;
2) deploying a flying ink blocking plate, wherein the flying ink blocking plate is provided with a W+0.1˜1 mm wide and L long hollowed-out jet printing window that is adapted in shape to the upper cover end face of lithium battery, the flying ink blocking plate is provided with a flying ink blocking block corresponding to the non jet printing portion of upper cover of lithium battery, the flying ink blocking block protrudes from the lower side of jet printing window into the jet printing window, and maintains a gap, H+0.1˜1 mm wide, with the upper side of jet printing window, a first jet printing window corresponding to the first jet printing region is formed between the upper side of jet printing window and the upper edge of flying ink blocking block, the jet printing window is a square region with a length of L and a width of H+0.1˜1 mm, and except for the first jet printing window, the remaining area of jet printing window is the second jet printing window;
3) placing the flying ink blocking plate above the upper cover end face of lithium battery, and align the upper side of jet printing window with the lower side of non jet printing portion, so that the first jet printing window of flying ink blocking plate corresponds to the first jet printing region of upper cover end face of lithium battery, and the first jet printing window is 0.1-1 mm wider than the first jet printing region; the first jet printing region of the upper cover end face of lithium battery is jet printed;
4) after completing jet printing on the first jet printing region of the upper cover end face of lithium battery, move the ink blocking plate so that the upper edge of ink blocking block aligns with the upper side of non jet printing portion, and the second jet printing window of ink blocking plate corresponds to the second jet printing region on the upper cover end face of lithium battery, and the second jet printing window is 0.1-1 mm wider than the second jet printing region; the second jet printing region of the upper cover end face of lithium battery is jet printed.