Spring Elastic Contact Structure for Lower Resistance Power Transfer
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Solution Overview
Problem
Existing spring elastic-piece electrically-conductive structures in metal-shell battery-replaceable devices suffer from high internal resistance and power loss due to the use of conical springs with small contact surfaces and long metal wires.
Innovation Solution
A spring elastic-piece electrically-conductive structure that includes a metal elastic piece with a bent structure accommodating a spring, where the metal elastic piece has lower internal resistance, allowing most current to flow through it, reducing internal resistance and power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conical spring with a larger number of turns is used to ensure sufficient rigidity and elasticity, then the spring can meet the needs of limiting and electric conducting, but the internal resistance increases and power loss increases due to the small contact surface and long metal wire
Solution Approach 1:
The invention divides the original single spring structure into two separate components: a metal elastic piece and a spring. The metal elastic piece provides the primary electrical conduction path with lower resistance, while the spring provides mechanical support and elasticity. This segmentation allows each component to optimize its function independently, reducing overall power loss while maintaining required rigidity and elasticity.
Solution Approach 2:
The metal elastic piece acts as an intermediary component between the contact and the spring. It provides a low-resistance electrical conduction path while mechanically connecting to the spring, which provides the necessary elasticity and limiting function. This intermediary structure separates the electrical conduction function from the mechanical support function, reducing the negative impact of spring resistance on power loss.
2Strength
If a conical spring with a larger number of turns is used to ensure sufficient rigidity and elasticity, then the spring can meet the needs of limiting and electric conducting, but the internal resistance increases due to the long metal wire
Solution Approach 1:
The invention divides the original single spring structure into two separate components: a metal elastic piece and a spring. The metal elastic piece provides the primary electrical conduction path with lower resistance, while the spring provides mechanical support and elasticity. This segmentation allows each component to optimize its function independently, reducing overall power loss while maintaining required rigidity and elasticity.
Solution Approach 2:
The metal elastic piece acts as an intermediary component between the contact and the spring. It provides a low-resistance electrical conduction path while mechanically connecting to the spring, which provides the necessary elasticity and limiting function. This intermediary structure separates the electrical conduction function from the mechanical support function, reducing the negative impact of spring resistance on power loss.
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 structure reduces internal resistance and power loss by utilizing a metal elastic piece with lower resistance, enhancing contact area and support performance, thereby improving electric-conducting efficiency.
Implementation Method 1
a contact, an elastic piece, or a spring is connected to a negative electrode of a battery to conduct current to a metal tail cover
Implementation Method 2
a spring, arranged inside the accommodation space; two ends of the spring are connected to the metal elastic piece to support the opening
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Disclosure is a spring elastic-piece electrically-conductive structure and an electrical device. The structure includes a metal elastic piece and a spring. One end of the metal elastic piece is bent relative to another end to form an accommodation space having an opening; the spring is arranged inside the accommodation space, two ends of the spring are connected to the metal elastic piece to support the opening. Besides the spring structure, the metal elastic piece is further included. The metal elastic piece is bent to accommodate the spring. Due to the longer metal wire and higher internal resistance of the spring and the resistance of the metal elastic piece is smaller than that of the spring, most of the current flows through the metal elastic piece with lower internal resistance during operating the electrical device, thereby reducing internal resistance and achieving the goal of reducing heating and power loss.