TH.2024.03.004]
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动力电池螺栓紧固防错系统设计与实现(PDF)

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

Title:: Design and implementation of error proofing system for tightening power battery bolts

Author(s):: LI Zhan; LI Yang; LI Lin; XU Wei; (Jiangsu Automation Research Institute, Jiangsu Lianyungang 222061, China)

Keywords:: new energy vehicles; power battery; bolt; ultrasonic; error proofing

摘要:: 动力电池一般通过螺栓固定在电池箱中，由于安装空间小,部分螺栓仍需人工参与装配，人工安装不可避免发生螺栓漏装、过拧紧、未按工艺装配顺序等引发质量问题。针对上述问题，提出一种螺栓防错紧固方法。采用超声波定位系统与电动拧紧系统结合的方式，对螺栓安装过程的扭矩和位置实时监测，通过软件控制螺栓安装位置的先后顺序，并通过声光等方式对安装过程的正确与否进行提醒。对防错系统的原理、方法、研制、误差分析与修正进行说明。试验结果表明,防错一次合格率达100%，满足人工辅助装配作业需要。

Abstract:: Power batteries are usually fixed in the battery box by bolts. Due to the small installation space, some bolts still need to be manually assembled, which inevitably leads to quality problems such as bolt omission, over tightening, and failure to follow the assembly process sequence. Therefore, a bolt error proofing tightening method to address the above issues was proposed. By combining ultrasonic positioning system with electric tightening system, the torque and position of bolt installation process are monitored in real-time. The sequence of bolt installation positions is controlled through software, and the correctness of the installation process is reminded through sound and light methods. Explain the principles, methods, development, error analysis, and correction of error proofing systems. The experimental results show that the first pass rate of error proofing reaches 100%, which meets the needs of manual assembly operations.

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