Connecting Cable Control Circuit for Stable Startup and Power Adaptation
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Solution Overview
Problem
Existing connecting cables for Type-C and Lightning interfaces suffer from loose solder joints due to frequent plugging and unplugging, leading to poor contact and inability to adapt to adapters or power banks with different power ratings, limiting their functionality and convenience.
Innovation Solution
A control circuit for connecting cables is introduced, featuring a starting circuit, charging circuit, and protection modules to ensure stable startup, adapt to different power sources, and prevent static electricity surges, with L-shaped ground pads for grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the casing is connected to the control board through solder joints, then the connecting cable can be assembled, but long-term plugging and unplugging causes the solder joints to loosen, leading to poor contact and failure
Solution Approach 1:
The patent divides the grounding connection into separate modular components: the casing contains a grounding pad, the control board has a corresponding grounding contact, and they connect through a flexible grounding wire rather than rigid solder joints. This segmentation allows each component to be independently assembled while maintaining reliable electrical connection through the flexible wire that accommodates mechanical stress from plugging and unplugging operations.
Solution Approach 2:
The patent changes the mechanical parameter of the grounding connection from rigid (solder joints) to flexible (grounding wire). This parameter change allows the grounding connection to accommodate the mechanical movements during plugging and unplugging without causing solder joint loosening, thereby maintaining both assembly ease and long-term contact reliability.
2Device complexity
If the connecting cable uses fixed electronic components, then the circuit can be simplified, but it cannot adapt to adapters or power banks with different power ratings
Solution Approach 1:
The patent introduces dynamic control through the main control circuit that can adjust the starting circuit's configuration based on detection results. The control circuit dynamically switches between different grounding resistance values (first grounding resistance when connected, second grounding resistance when disconnected) and adjusts the starting module's working state according to the power source type, enabling adaptation to different power ratings without increasing overall circuit complexity.
Solution Approach 2:
The patent implements feedback mechanisms where the main control circuit detects the connection state and power source characteristics, then adjusts the starting circuit's grounding resistance and working mode accordingly. This feedback loop enables the circuit to automatically adapt to different adapters and power banks with varying power ratings while maintaining a relatively simple overall circuit structure.
3Productivity
If the starting circuit is always activated, then the charging can start immediately, but it cannot protect against static electricity surges
Solution Approach 1:
The patent implements preliminary grounding through the grounding pad and grounding wire connection that is established before charging begins. The control circuit performs preliminary detection of the connection state and power source characteristics before activating the charging function, ensuring that the grounding path is already in place to protect against static electricity surges while enabling immediate charging startup.
Solution Approach 2:
The patent provides beforehand protection by establishing a grounding path through the grounding pad and grounding wire before charging operations begin. The control circuit detects connection status in advance and configures the appropriate grounding resistance, creating a protective cushion against static electricity surges that might occur during subsequent charging operations, thus protecting the circuit while maintaining fast startup.
Data Source
AI summary
A control circuit for a connecting cable and the connecting cable comprises an input end connected to an adapter or power bank, and an output end connected to a peripheral device; a charging circuit is connected between the input end and the output end; the control circuit further includes a main control circuit and a starting circuit connected to the main control circuit; the main control circuit is electrically connected to the charging circuit; the starting circuit is connected to the output end, and the starting circuit enables the input end to adapt to the protocol of the adapter or power bank, after which the charging circuit provides electrical signals to the output end for charging the peripheral device; by arranging a starting module in the circuit and using the starting module+housing to ensure stable startup of the connecting cable, the startup is more reliable.