Power Interface Pin Structure for 10A Fast Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile terminals require frequent charging due to increased power consumption, especially with the demand for fast charging in urgent situations, and existing power interfaces struggle to efficiently handle high charging currents within a limited space.
Innovation Solution
The power interface design includes power pins with an expanded conductive portion and insulating part, optimized layout, and recesses to accommodate different charging modes, allowing for increased current load and efficient charging, compatible with both fast and normal charging adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power interface uses standard pin design, then the device structure is simple and manufacturing is easy, but the current load capacity is insufficient for fast charging
Solution Approach 1:
The power pin adopts different structure qualities at different locations: the contact portion maintains a standard cylindrical shape for compatibility, while the expanded portion features a flattened cross-section with insulating coating. This local differentiation allows the pin to achieve higher current capacity where needed while maintaining simplicity in the contact interface.
Solution Approach 2:
The power pin transitions from a two-dimensional cross-sectional view to a three-dimensional structure by adding an expanded portion that protrudes along the insertion direction. This dimensional extension increases the current-carrying cross-sectional area without significantly increasing the contact footprint, thereby boosting power capacity while controlling structural complexity.
2Adaptability or versatility
If the power interface accommodates multiple charging modes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The power pin is designed with multi-functionality by incorporating both a contact portion for electrical connection and an expanded portion for mechanical engagement and mode identification. This single structure serves multiple functions: current conduction, mechanical stability, and charging mode differentiation, thereby achieving versatility without proportionally increasing complexity.
Solution Approach 2:
The power pin is segmented into distinct functional portions: the contact portion for electrical connection and the expanded portion for structural engagement. This segmentation allows each portion to be optimized independently for its specific function while working together to achieve multi-mode compatibility with reduced overall complexity.
3Power
If the power pin has larger cross-sectional area, then the current load capacity increases, but the space utilization in the interface is reduced
Solution Approach 1:
The power pin utilizes the insertion direction (third dimension) to increase its effective current-carrying cross-sectional area through the expanded portion, rather than increasing the area in the contact plane. This dimensional strategy allows higher current capacity while maintaining efficient space utilization in the two-dimensional interface layout.
Solution Approach 2:
The expanded portion is positioned locally away from the contact interface, concentrating the increased cross-sectional area where it is needed for current capacity without interfering with the compact contact arrangement. This local quality enhancement allows the interface to maintain high space utilization while supporting higher power loads.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A power interface (100), a mobile terminal, and a power adapter are disclosed. The power interface (100) may include a main body (110), a plurality of data pins (120), and a plurality of power pins (130). The main body (110) is configured to be connected to a circuit board. The data pins (120) and power pins (130) are connected to the main body (110) and spaced from each other. Each of the power pins (130) comprises a conductive portion (130a) and an insulating portion (130b) connected with the conductive portion (130a), and the conductive portion (130a) and the insulating portion (130b) are arranged along a width direction of each of the power pins (130).