Electromagnetic Winding Needle Support Against Tension Deformation
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Solution Overview
Problem
Winding needles in battery production are prone to deformation due to tension from winding materials, leading to electrode sheet and membrane deformation, misalignment, wrinkles, and reduced battery performance.
Innovation Solution
A winding apparatus with a power supply assembly to provide current and a magnet supply assembly to generate a magnetic field intersecting the winding needle axis, creating an ampere force to counteract tension and reduce deformation, accompanied by a controller to adjust current and magnetic field intensity based on tension detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the winding needle is made more slender to increase rotation speed, then productivity is improved, but the winding needle deformation increases due to tension
Solution Approach 1:
The patent replaces the traditional mechanical support structure with an electromagnetic field system. A magnetic field is generated around the winding needle using electromagnetic coils, and electric current is applied to the needle. The interaction between the magnetic field and current produces an electromagnetic force that counteracts the tension-induced deformation, allowing slender needles to maintain precision at high rotation speeds.
Solution Approach 2:
The patent changes the physical state of the winding needle by applying electric current and utilizing magnetic field interaction. By controlling the parameters of the magnetic field strength and current intensity, the electromagnetic force can be adjusted to precisely counterbalance the deformation caused by tension during high-speed rotation.
2Device complexity
If the winding needle is made more slender to reduce size, then device complexity is reduced, but the deformation under tension increases
Solution Approach 1:
The patent substitutes mechanical strengthening methods with an electromagnetic support system. Instead of making the needle thicker or using stronger materials, the system generates an electromagnetic force field that actively counteracts deformation, enabling slender needles to maintain structural integrity under tension.
Solution Approach 2:
The patent creates a composite system combining the winding needle with an electromagnetic field environment. The needle operates within a controlled magnetic field generated by electromagnetic coils, forming a composite functional system where the electromagnetic field provides additional structural support without adding physical mass to the needle itself.
3Device complexity
If traditional winding devices are used, then device complexity is low, but the winding needle deforms under tension reducing product quality
Solution Approach 1:
The patent introduces an electromagnetic field system to replace or supplement traditional mechanical support structures. Electromagnetic coils generate a magnetic field around the winding needle, and electric current applied to the needle creates an electromagnetic force that counteracts tension, thereby preventing deformation and improving product quality without requiring complex mechanical reinforcement.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary between the winding needle and the external environment. This electromagnetic field acts as a mediator that provides support force to the needle during winding operations, reducing direct mechanical stress and deformation while maintaining product quality.
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
Reduces winding needle deformation, improves product quality, and allows for a more slender needle design with higher rotational speed and efficiency, enhancing battery performance and capacity.
Implementation Method 1
a magnetic field direction intersecting the axis of the winding needle so that the winding needle generates an ampere force for resisting deformation of the winding needle in the magnetic field
Data Source
AI summary
Disclosed are a winding apparatus and a winding method, the winding apparatus includes: a winding needle, being configured to wind a winding material; a power supply assembly, being configured to be electrically coupled to the winding needle, so as to form current on an axis of the winding needle; and a magnet supply assembly, being configured to provide a magnetic field to the winding needle, a magnetic field direction intersecting the axis of the winding needle so that the winding needle generates an ampere force for resisting a deformation of the winding needle in the magnetic field when the winding material is wound. By the above method, the present application may reduce the deformation of the winding needle, reduce a defective rate of a winding product formed by the winding of the winding material, and improve quality of the winding product.