Coil Substrate with Equal-Width Wiring for Motor Torque
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Solution Overview
Problem
Existing motor coil substrates face issues with resistance and torque efficiency due to varying widths and thicknesses of wirings, leading to defects and reduced performance.
Innovation Solution
A coil substrate with a flexible substrate featuring coils formed by equal-width and equal-thickness first, second, and third wirings, where the first wiring is closer to one end and the second wiring closer to the other end, connected by a third wiring, optimizing the motor's efficiency and torque by ensuring uniform current flow and reduced resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wirings of different widths and thicknesses are used in coils, then device complexity is reduced, but resistance increases and torque efficiency decreases
Solution Approach 1:
The patent applies homogeneity by making all wirings (first, second, and third wirings) have substantially equal widths and thicknesses. This uniform wiring structure eliminates the performance degradation caused by varying wiring dimensions, ensuring consistent current distribution and optimal motor torque efficiency while maintaining manufacturing simplicity through standardized wiring parameters.
2Area of stationary object
If thin wirings are used to reduce device size, then area is reduced, but defects increase and resistance increases
Solution Approach 1:
The patent optimizes wiring parameters by establishing specific width and thickness ranges (width: 0.05-0.15mm, thickness: 0.003-0.008mm) that balance miniaturization with reliability. By carefully controlling these parameters and maintaining uniform dimensions across all wirings, the invention achieves compact motor size while preventing wiring defects and minimizing resistance through optimized conductor cross-sections.
3Manufacturing precision
If unequal width wirings are used, then manufacturing precision requirements are reduced, but resistance increases and current flow uniformity decreases
Solution Approach 1:
The patent implements homogeneity by specifying that all wirings have substantially equal widths and thicknesses within controlled tolerances. This uniform wiring configuration ensures optimal current distribution across the coil structure, minimizing resistive losses and energy waste while maintaining achievable manufacturing precision through standardized wiring specifications.
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 solution reduces resistance and enhances motor efficiency and torque by maintaining equal widths and thicknesses of wirings, preventing defects associated with thin wirings and improving the motor's performance.
Implementation Method 1
a motor includes a stator and a rotor. The stator includes a motor coil substrate wound in a specific pattern... the rotor includes a permanent magnet... coils generate a magnetic field through current flow to interact with the permanent magnet, producing motor torque
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~3D
AI summary
A coil substrate includes a flexible substrate having a first end and a second end, and coils formed on the substrate such that the coils extend from the first end to the second end of the substrate. The coils are formed such that each coil includes a center space and a wiring formed around the center space, each coil is formed such that the wiring includes one or more first wirings, one or more second wirings facing the first wiring(s) via the center space, and one or more third wirings connecting the first and second wiring(s) and that the first wiring(s) is positioned closer to the first end than the second wiring(s), and the wiring in each coil is formed such that a width w1 of the first wiring(s), a width w2 of the second wiring(s), and a width w3 of the third wiring(s) are substantially equal to each other.