US 12,444,071 B2
Method, device, and system for detecting size of battery composite surface
Pengfei Duan, Ningde (CN); Dajun Ni, Ningde (CN); Jun Hu, Ningde (CN); Hongyuan Li, Ningde (CN); and Shiping Feng, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Mar. 1, 2024, as Appl. No. 18/592,881.
Application 18/592,881 is a continuation of application No. PCT/CN2022/085399, filed on Apr. 6, 2022.
Prior Publication US 2024/0202955 A1, Jun. 20, 2024
Int. Cl. G06T 7/62 (2017.01); G06T 7/00 (2017.01); G06T 7/13 (2017.01); G06T 7/33 (2017.01); H04N 23/60 (2023.01); H04N 23/90 (2023.01)
CPC G06T 7/62 (2017.01) [G06T 7/001 (2013.01); G06T 7/13 (2017.01); G06T 7/337 (2017.01); H04N 23/60 (2023.01); H04N 23/90 (2023.01)] 11 Claims
OG exemplary drawing
 
1. A dimension detection method for a composite surface of a battery, comprising:
acquiring image information of a cathode sheet, wherein the image information of the cathode sheet comprises an image of a first surface of the cathode sheet and an image of a second surface opposite to the first surface;
acquiring image information of a composite sheet, wherein the composite sheet comprises a non-composite surface and the composite surface, the non-composite surface is formed by compounding the first surface of the cathode sheet, an anode and a separator, the composite surface is formed by compounding the second surface of the cathode sheet, the anode and the separator, and the image information of the composite sheet comprises image information of the non-composite surface; and
calculating, through an image processing algorithm, dimension information of the composite surface according to the image information of the cathode sheet and the image information of the composite sheet, wherein the dimension information of the composite surface comprises a distance from a cathode edge to an anode edge in the composite surface, and calculating the dimension information of the composite surface comprises:
calculating, through the image processing algorithm, misalignment amount according to the image of the first surface of the cathode sheet and the image of the second surface, wherein the misalignment amount indicates a difference between a distance from a cathode edge to a ceramic edge of the first surface of the cathode sheet and a distance from a cathode edge to a ceramic edge of the second surface of the cathode sheet;
calculating a distance from a cathode edge to an anode edge in the non-composite surface according to the image information of the composite sheet; and
calculating the distance from the cathode edge to the anode edge in the composite surface according to the misalignment amount and the distance from the cathode edge to the anode edge in the non-composite surface.