宇航计测技术

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锂离子电池极片涂层厚度在线测量系统

李红民1；靳丽静1；于永新2；牛晓光1；李斌1   

  1. 1、山东建筑大学 信息与电气工程学院，济南250101；
    2、天津大学 计算机科学与技术学院，天津 300072
  • 出版日期:2014-08-15 发布日期:2014-08-15
  • 作者简介:李红民（1964-），男，副教授，博士，主要研究方向：精密仪器与测量。
  • 基金资助:
    国家科技重大专项资助课题(2011ZX04002-062)

The On-line Coating Thickness Measurement System for Lithium-ion Battery Polepieces

LI Hong-min1；JIN Li-jing1；YU Yong-xin2；NIU Xiao-guang1；LI Bin1   

  1. 1、School of Information & Electrical Engineering，Shandong Jianzhu University，Jinan 250101；
    2、School of Computer Science and Technology，Tianjin University，Tianjin 300072
  • Online:2014-08-15 Published:2014-08-15

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摘要： 锂离子电池极片涂层厚度的实时高精度测量是实现对锂电涂层厚度控制的前提。针对在生产过程中的锂离子电池极片涂层厚度动态、非接触、高精度的测量要求，设计了一种基于非接触式电容传感器进行微位移测量的在线式测量系统。介绍了传感器结构及测量电路基本原理，搭建了适用于锂离子电池极片涂层厚度测量的硬件系统，开发了可用于数据采集、线性校正、数据记录的基于虚拟仪器技术的测试系统。经测试，该传感器的分辨力为0.1μm，现场长期运行证明该系统满足生产的测量要求。

关键词: 涂层厚度, 电容传感器, 在线测量, 虚拟技术

Abstract: The high-accuracy measurement on lithium-ion battery polepiece coating thickness is the prerequisite for good regulation. To satisfy the need of dynamic, non-contact and high-precision measuring, the online measuring system was designed that based on micrometric displacement measuring by non-contact capacitive sensor. The structure and circuit of sensor is introduced, the hardware system suitable for lithium-ion battery polepiece coating thickness measurement is constructed, and the practical testing system based on the virtual instrument technology for data sampling, linear correction and data record is developed. Through the experiment, the resolution of the sensor is 0.1um. By long running in measurement scene, it is proved that the system can meet the production requirements of measurement.

Key words: Coating thickness, Capacitance sensor, On-line measurement, Virtual technology

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