Robot Joint Wireless Power Transfer for Infinite Rotation
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Solution Overview
Problem
The existing methods for connecting robot joints through cables are time-consuming and require high operator skill, limiting the rotation angle and causing cable breakage, which hinders infinite continuous rotation.
Innovation Solution
A wireless power supply apparatus and method for robot joint modules that use wireless power receivers and transmitters to transfer electrical power between joints without cables, along with a wireless communication module for control instructions and status parameter exchange, enabling cable-free connection and continuous rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable arrangement is used to connect robot joints, then power and communication can be transmitted between joints, but the assembly process becomes time-consuming and requires high operator skill
Solution Approach 1:
The patent extracts and removes the cables (both power cables and communication cables) from the robot joint connection system. By eliminating the physical cable infrastructure, the system achieves cable-free power transmission through wireless power supply and cable-free communication through wireless communication modules, thereby eliminating the time-consuming cable arrangement process while maintaining reliable power and communication transmission between joints
Solution Approach 2:
The patent replaces the mechanical cable-based power transmission system with a wireless power supply system using electromagnetic fields. The mechanical cable arrangement is substituted by wireless power transmission apparatus that can transmit power through air or vacuum without physical contact, eliminating the need for operators to manually arrange and connect cables between joints
2Reliability
If cables are arranged between robot joints, then power can be supplied to joints, but cable winding causes cable breakage and limits rotation angle
Solution Approach 1:
The patent removes the physical cables from the joint connection system, eliminating the fundamental cause of cable breakage during rotation. By extracting the cable infrastructure and replacing it with wireless power transmission, the system allows joints to rotate through any angle without the risk of cable winding, twisting, or breakage, thereby achieving unlimited rotation range while maintaining reliable power supply
Solution Approach 2:
The patent substitutes the mechanical cable-based power delivery system with a wireless electromagnetic field-based power transmission system. This replacement eliminates the mechanical constraints imposed by cables on joint rotation, allowing the robot joints to achieve full 360-degree or infinite continuous rotation without cable interference, while the wireless power system continuously supplies power without physical connection limitations
3Reliability
If communication cables are arranged between joints, then control instructions can be transmitted, but the arrangement becomes complex and cables may break during rotation
Solution Approach 1:
The patent extracts and eliminates communication cables from the joint connection system by implementing wireless communication modules in each joint. These modules enable direct wireless communication between joints and with the control device, removing the need for complex cable routing and connections while maintaining reliable control instruction transmission and status parameter feedback
Solution Approach 2:
The patent replaces the mechanical cable-based communication system with wireless electromagnetic communication. The physical cable connections are substituted by wireless communication modules that transmit control instructions and status information through electromagnetic fields, eliminating the complexity of cable arrangement and the risk of cable breakage during joint rotation while ensuring reliable communication
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
This solution reduces the cost and difficulty of cable arrangement, prevents cable breakage, and allows for infinite continuous rotation of joints by eliminating the need for physical power and communication cables.
Implementation Method 1
a wireless power receiver arranged at a connecting end of a current robot joint module and adapted to receive electrical power from a previous robot joint module of the current robot joint module
Implementation Method 2
a wireless power transmitter arranged at an output end of the current robot joint module and adapted to transmit the electrical power to a next robot joint module of the current robot joint module
Data Source
AI summary
A robot joint module and a wireless power supply apparatus, system, and method therefor. The apparatus includes: a wireless power receiver arranged at a connecting end of a current robot joint module and adapted to receive electrical power from a previous robot joint module of the current robot joint module; and a wireless power transmitter arranged at an output end of the current robot joint module and adapted to transmit the electrical power to a next robot joint module of the current robot joint module. By receiving electrical power from a previous robot joint module in a wireless power supply mode and sending the electrical power to a next robot joint module in a wireless power supply mode, the electrical power can be transferred between a plurality of robot joint modules, without arranging any power cable. The cost of and difficulty in arranging power cables can be reduced, and cable breakage caused by winding of the power cables can also be avoided, thereby implementing infinite continuous rotation of joints.