solidworks电动汽车充电桩充电端口安全防护装置设计与实现
关键词 交流充电桩 防护端口 单片机 步进电动机 限位反馈 Title The design and implementation of safety protection
device for the electric vehicle charging pile port
Abstract
On the background of the AC charging point of electric vehicles,for the
current problems in the charge point port,this paper designs the safety
protection device, which need the function of automatic opening and closing
of the charging port in accordance with the instructions of the charge pile
control and preventing the charging port from artificial or accidental
damage, and avoiding port causing accidental injury to others.
On the basis of the analysis of application objects and functional
requirements, the gear rack transmission structure and driving system of
stepping motor have been selected. The mechanical structure of the
protective port is designed by solidworks software. According to the
functional requirements the automatic control circuit is designed,and
protel sofeware is used to draw and produce a PCB board. Finally control
program for the system of automatic control is written,debugged,compiled
and downloaded.The physical sample product is finally assembled,and
hardware and sofeware is finally debugged. The test results indicate that
the charge pile port is effectively protected.
Keywords AC charging point protection port microcontroller
Stepper motor limit feedback 目 次
1 引言 . 1
1.1 课题设计背景 1
1.2 防护端口现状 2
1.3 本文的主要工作及意义 . 3
2 系统总体设计 .. 5
2.1 应用对象分析 5
2.2 功能需求分析 5
2.3 总体方案设计 5
2.3.1 设计原则 .. 5
2.3.2 传动结构选型 . 6
2.3.3 动力机的选择 . 7
2.3.4 开关门运动状态监测 . 8
2.3.5 防护端口结构方案 9
2.4 本章小结 . 9
3 防护端口结构设计 10
3.1 壳体及开关门参数的确定 . 10
3.2 传动结构的参数计算 .. 11
3.2.1 初选齿轮参数 11
3.2.2 齿轮模数 m 的确定 .. 11
3.2.4 齿宽及中心距的计算 14
3.3 负载参数的估算 15
3.3.1 负载转矩的估算 . 15
3.3.2 步进电动机型号选择 15
3.3.3 步进电动机转速计算 16
3.4 电机支架及导向片的参数计算 17
3.4.1 电机支架尺寸确定 .. 17
3.4.2 固定片尺寸确定 . 17
3.5 本章小结 18
4 防护端口控制硬件电路设计 . 19
4.1 驱动电路 19
4.1.1 ULN2003 简介. 20
4.2.2 步进电动机驱动电路 20
4.2 限位反馈电路 .. 21
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