Robot Charging System with Force Detection for Electric Vehicle
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Solution Overview
Problem
Existing charging systems for electric motor vehicles face increased wear and reliability issues due to position and orientation deviations during parking, which can lead to excessive stress on electrical plug connections.
Innovation Solution
A charging system equipped with a robot and force detection means, allowing for force-controlled connection and compensation of position and orientation deviations, utilizing a multi-axis robot with a detachable connector and integrated sensors to manage forces and torques, ensuring secure and reliable plugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If passive tolerance compensation is used to accommodate position deviations during parking, then the charging system can handle larger position deviations, but wear of the plug connection increases
Solution Approach 1:
The robot is designed with six or seven axes of movement, providing dynamic positioning capability. This allows the robot to actively adjust its end effector position and orientation in real-time, transforming from a static rigid connection to a dynamic adaptive system that can compensate for position deviations without increasing plug connection wear
Solution Approach 2:
The system incorporates detection means (such as cameras or sensors) that measure the actual position of the mating connector, and this information is fed back to the control unit. The control unit then calculates the necessary adjustments and commands the robot to move its end effector accordingly, creating a closed-loop feedback system that eliminates wear by preventing misalignment rather than passively absorbing it
2Manufacturing precision
If a robotic manipulator with multiple axes is used to achieve precise positioning, then plugging precision is improved, but device complexity increases
Solution Approach 1:
The robot system is designed to perform multiple functions: positioning the charging plug, detecting the mating connector position, and controlling the charging process. By integrating these functions into a single multi-functional platform, the patent reduces overall system complexity compared to having separate systems for each function
Solution Approach 2:
The control unit acts as an intermediary that receives detection data, processes it through calculation algorithms, and translates it into robot movement commands. This intermediary layer simplifies the connection between the detection means and the robot actuators, making the overall system more manageable despite the complexity of the multi-axis robot
Data Source
Figure 1~2
AI summary
The invention relates to a charging system for a motor vehicle, in particular a passenger car (2), provided with a robot (1) having a control means (1.1), a force detecting means (5), and a plug (4.1) fastened to the robot, configured to establish a detachable plug connection with the mating plug (4.2) on the vehicle side for charging an electric energy store of the motor vehicle, wherein the control means is configured to communicate with the force detecting means, and to connect the robot-guided plug to the mating plug based on a force detected by the force detecting means.