Mobile Robot Docking for Photovoltaic Wafer Transport

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Solution Overview

Problem

The transportation of silicon wafers between process points in photovoltaic production lines is inefficient and prone to damage due to manual handling, requiring numerous workers and limiting production efficiency and safety.

Innovation Solution

A mobile robot system that uses near field communication to autonomously navigate and dock with process points, transferring materials between them, thereby reducing labor costs and enhancing automation and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual handling is used to transport silicon wafers between process points, then workers can directly load and unload materials, but the transportation efficiency is low and a large number of workers are required

Engineering Contradiction:

Improvetransportation efficiencyVSAvoidmanual handling

Core Design Contradiction:

ProductivityVSExtent of automation

Solution Approach 1:

The mobile robot autonomously navigates to process points, docks with transmission lines, and transports materials without human intervention. The robot independently completes the entire transportation cycle from picking up flower baskets at one process point to delivering them at another, eliminating the need for manual handling and significantly improving transportation efficiency

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the manual mechanical system (workers pushing carts) with an automated mobile robot system equipped with sensors, navigation capabilities, and automated docking mechanisms. This substitution transforms the transportation process from labor-intensive to automation-driven, resolving the contradiction between productivity and automation extent

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Quantity of substance

If workers manually transport flower baskets using carts, then materials can be moved between process points, but the transportation volume per person is small and labor costs are high

Engineering Contradiction:

Improvetransportation volume per workerVSAvoidlabor intensity

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The mobile robot is designed as a universal transportation platform that can handle multiple types of materials (silicon wafers, flower baskets, and other photovoltaic production materials) across different process points. This multi-functional robot replaces multiple specialized workers, dramatically increasing the effective transportation volume per unit while reducing overall labor intensity in the production line

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If manual transportation methods are used, then workers can monitor and handle materials directly, but silicon wafers are thin and brittle and are easy to be damaged during the transportation process

Engineering Contradiction:

Improvesafety of transportationVSAvoiddamage to silicon wafers

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces manual handling with an automated mobile robot system that uses controlled mechanical transmission lines for material transfer. The robot employs sensors and automated docking mechanisms to handle flower baskets with precision, eliminating the rough handling and accidental drops that occur with manual transportation, thereby reducing damage to thin and brittle silicon wafers while maintaining transportation safety

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mobile robot acts as an intermediary between process points, using automated transmission lines as a mediator to transfer materials. This intermediary system provides controlled, stable, and damage-free transportation compared to direct manual handling, protecting silicon wafers from mechanical damage while ensuring reliable delivery between production stages

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The mobile robot system significantly improves the automation and efficiency of material transportation between process points, ensuring safer handling and reduced labor costs while minimizing damage to silicon wafers.

Implementation Method 1

both the mobile robot and the process point are provided with a near field communication module; the mobile robot and the process point dock based on the near field communication

Methodology Applied

Scientific EffectNear field communication: Electromagnetic Induction

Data Source

PatentUS11573560B2Robot and a system and method of transporting materials using the robot

Publication Date: 2023.02.07 SUZHOU XINYOUHUA INVESTMENT ADVISOR CO LTD

AI summary

The invention discloses a material transport method between process points of a photovoltaic production line. A mobile robot receives an instruction to transport materials from one process point to another, and the mobile robot and the process point dock based on near field communication to take or discharge materials. In the operation method and system of the invention, the flower baskets are transported from one process point to another on the photovoltaic production line by means of a mobile robot instead of manual human effort, significantly improving the automation degree and production efficiency of the photovoltaic production line, ensuring transportation safety, and reducing labor cost.