组装电池组系统时，机器视觉系统引导 EV 电池模块和电缆连接器
在空气中冷却之前，先通过连接器和紧固件将 EV 电池模块固定到 EV 电池组中。这发生在堆叠阶段，其中机器人拾取电池并堆放到透明托盘中，然后在顶部放一个盖子以进行连接和充电。由于基准标记是关键的参考位置，所以制造商必须能够准确并重复地对其进行提取和定位。这种类型的取放应用需要视觉引导的机器人和精确的图案匹配。在各种市场中，这种应用通常会使用智能相机或计算机式视觉软件。
Module to Pack Guidance
Cognex In-Sight vision systems reliably guide and align battery modules onto the EV battery pack system housing by identifying fiducial “flags” which appear as notches to the camera. The application’s success rests on the calibration of the fiducials into coordinates, which allow the system to fixture the part. An In-Sight 8000 vision system mounted to a robot acquires an image of each corner and its three alignment holes to calculate the battery module’s position. Cognex PatMax technology uses geometric information to locate and calibrate fiducial marks. PatMax is fast, robust, and highly accurate under a variety of conditions so that it is able to achieve precision alignment. The system uses these coordinates to guide the robot to pick up the bottom case. Then, a pick-and-place robot transfers it to another part of the facility.
Cable Connector 3D Guidance
3D vision tools are required to find the center of connectors or receptacles on the pack system housing, estimate the plane, and then calculate x, y, and z dimensions. A 3D laser displacement sensor guides the robot to plug in the power cable by providing its 3D position at the test station.