Jumper Cable Polarity Detection for Low-Voltage Jump Starts
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Solution Overview
Problem
Existing jumper cables face issues such as difficulty in starting vehicles with large displacements, risk of overheating and burning components due to reverse connection, and lack of polarity detection, leading to potential fires and unreliable ignition.
Innovation Solution
A jumper cable device with a main controller, clamp polarity detection module, and forced mode feedback module that automatically determines clamp polarities based on battery electrodes, allowing connection without prior polarity confirmation, and includes a forced mode to ensure ignition even with low battery voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional jumper cables without polarity detection are used, then the connection process is simple, but reverse connection may cause overheating, component burning, and fire risks
Solution Approach 1:
The patent implements a clamp polarity detection module that automatically detects the polarity of battery electrodes when clamps are connected. The main controller receives detection signals and controls the clamp connection module to switch circuits appropriately, providing automatic feedback-based protection against reverse connection without requiring complex user judgment.
Solution Approach 2:
The jumper cable device performs self-diagnosis through the clamp polarity detection module, which automatically identifies correct clamp-battery connections. The system serves itself by detecting polarity and controlling circuit switching without external intervention, eliminating the need for users to manually verify polarity connections.
2Reliability
If MOS tube-controlled jumper cables are used, then some protection is provided, but they fail to detect ignition completion and cannot disconnect the ignition circuit
Solution Approach 1:
The patent implements a forced mode feedback module that continuously monitors battery voltage during the jump-start process. When the battery voltage reaches a predetermined threshold indicating successful ignition, the module sends feedback signals to the main controller, which then controls the clamp connection module to disconnect the ignition circuit, ensuring complete ignition cycle management.
3Ease of manufacture
If straight-through jumper cables are used, then the structure is simple, but no reverse connection protection is provided and battery boosting fails when polarities are reversed
Solution Approach 1:
The clamp polarity detection module detects whether clamps are correctly connected to battery electrodes of appropriate polarity. When reverse connection is detected, the main controller receives the detection signal and controls the clamp connection module to prevent circuit closure, blocking harmful reverse connection current while allowing correct connections to proceed normally.
4Reliability
If conventional jumper cables require polarity confirmation before connection, then safety may be improved, but the connection process becomes more complex and time-consuming
Solution Approach 1:
The clamp polarity detection module performs preliminary polarity detection automatically as soon as clamps are connected to battery terminals. The main controller processes detection signals and pre-configures the clamp connection module before full power transmission begins, ensuring safety checks are completed in advance without requiring separate user actions.
Solution Approach 2:
The system performs self-verification of clamp polarity connections through the detection module, automatically determining correct connections without requiring users to externally verify polarity. The main controller autonomously processes detection signals and controls circuit switching based on detected polarity, making the connection process both safe and simple.
Data Source
AI summary
A jumper cable device includes an input to be connected with an startup power source, two clamps to be connected to a battery of a load, a main controller, a clamp polarity detection module, a forced mode feedback module and a clamp connection module; the main controller is connected to the clamp polarity detection module and the clamp connection module, the clamp polarity detection module and the clamp connection module are further connected to the two clamps, and the forced mode feedback module is connected to the main controller and the two clamps; wherein when a voltage of the battery of the load is lower than a detection threshold, the forced mode feedback module is operated to forcibly connect the circuits between the input and the two clamps, thereby switching on the circuit to the battery.