Cable Connector Polarity Detection and Surge Protection
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Solution Overview
Problem
The existing methods for connecting car batteries in emergency situations often result in incorrect polarity connections due to poor lighting, which can damage batteries, and there is a need for a solution to intelligently detect and prevent such errors.
Innovation Solution
A cable connector with a housing and wiring circuit that includes a detection module and voltage absorption module, utilizing a piezoresistor and switch circuits with illumination units and an alarm module to correctly identify and display connection polarities and prevent over-currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If cable connection is carried out under dark condition at night, then the operation can be performed anytime, but the connection polarity cannot be correctly identified due to poor lighting
Solution Approach 1:
The patent uses color-coded illumination units (red LED for correct connection, green LED for reverse connection) to visually indicate connection polarity. This allows users to quickly identify the correct connection state even in dark conditions, resolving the contradiction between operational availability and polarity identification accuracy.
Solution Approach 2:
The patent introduces an intermediary detection circuit that automatically detects connection polarity and triggers appropriate illumination. This intermediary system eliminates the need for manual polarity judgment by users, ensuring accurate identification regardless of lighting conditions while maintaining operational flexibility.
2Ease of operation
If red and black jumper wires are used for connection, then the connection method is simple, but reverse connection may occur due to user error
Solution Approach 1:
The patent implements immediate visual feedback through illumination units that indicate whether the connection is correct or reversed. This feedback mechanism guides users to correct any mistakes, maintaining the simplicity of the connection method while significantly reducing the risk of reverse connection damage.
Solution Approach 2:
The patent employs a detection circuit that proactively identifies reverse connections before damage can occur. By detecting the polarity state in advance and providing visual warning, the system prevents harmful reverse connection effects while keeping the operation simple.
3Device complexity
If no detection mechanism is added, then the device structure remains simple, but reverse connection can damage batteries and electrical appliances
Solution Approach 1:
The cable connector performs self-detection of connection polarity through integrated detection circuits and provides self-guidance via illumination units. This self-service capability allows the device to automatically identify and warn about reverse connections without requiring external detection equipment, adding protection functionality while maintaining structural simplicity.
4Measurement precision
If illumination units are added to indicate connection state, then the polarity identification accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
The patent uses inexpensive LED illumination units that provide reliable polarity indication. LEDs are low-cost, energy-efficient components that significantly enhance polarity identification accuracy without substantially increasing device complexity or cost, making the solution economically viable.
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 effectively protects electrical appliances from surge currents by real-time absorption of over-voltages and over-currents, providing intelligent display of connection conditions and ensuring safe battery connections across a range of car voltages.
Implementation Method 1
the voltage absorption module includes a piezoresistor bridged between the first wiring terminal and the second wiring terminal
Implementation Method 2
the first switch circuit includes a first illumination unit, and the second switch circuit includes a second illumination unit
Data Source
AI summary
A cable connector, a cable clamp, and a method for detecting bridging of car batteries. The cable connector includes a housing and a wiring circuit, wherein the wiring circuit is arranged in the housing and includes a first wiring terminal, a second wiring terminal, and a detection module and voltage absorption module electrically connected between the first wiring terminal and the second wiring terminal, and a voltage absorption module. The voltage absorption module includes a piezoresistor bridged between the first wiring terminal and the second wiring terminal. The detection module includes a first switch circuit and a second switch circuit which are oppositely bridged between the first wiring terminal and the second wiring terminal to be alternatively turned on, wherein the first switch circuit includes a first illumination unit, and the second switch circuit includes a second illumination unit.