Charging Cable Thermal Cutoff for Battery Overheating Protection
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Solution Overview
Problem
Conventional personal electronic device charging systems fail to prevent battery damage from overcharging, as batteries can combust due to excessive temperature during the charging process.
Innovation Solution
A temperature monitoring system with a charging temperature sensor attached to the cable, featuring a thermometer and a cutoff device that severs the cable when a dangerous temperature is reached, thereby stopping electricity flow to prevent overcharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional charging systems charge batteries without temperature monitoring, then charging speed and efficiency are maintained, but battery damage and combustion risk occur due to excessive temperature
Solution Approach 1:
The patent applies preliminary action by incorporating a temperature sensor and cutoff device into the charging cable before charging occurs. The system proactively monitors temperature during charging and automatically interrupts the circuit when dangerous temperatures are detected, preventing battery combustion before it can happen. This proactive approach ensures battery safety without requiring complex battery management systems within the device itself.
2Object-affected harmful factors
If temperature monitoring is added to prevent battery combustion, then battery safety is improved, but the charging system becomes more complex
Solution Approach 1:
The patent uses the charging cable as an intermediary component that houses both the temperature sensor and cutoff device. By placing the temperature monitoring and protection mechanisms in the cable rather than in the charging device or battery, the system achieves effective temperature control while keeping the overall device complexity low. The cable acts as a mediator that independently monitors and protects the charging process.
3Reliability
If automatic cutoff is implemented to stop charging at dangerous temperatures, then prevention of battery damage is achieved, but response time to detect temperature changes is critical
Solution Approach 1:
The patent implements a feedback mechanism where the temperature sensor continuously monitors the charging cable temperature and automatically triggers the cutoff device when a predetermined temperature threshold is exceeded. This closed-loop feedback system ensures rapid response to overheating conditions, immediately interrupting the charging current to prevent battery damage without requiring manual intervention or complex processing delays.
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
Effectively prevents battery damage by interrupting the charging process when the cable temperature exceeds a critical level, ensuring safe charging and protecting the device's components.
Implementation Method 1
the sensor including a thermometer... in proximity to the cable and detect its temperature
Data Source
AI summary
An overcharging protection system monitors the temperature of a cable used to transfer electricity from a power source to a personal electronic device. If the temperature as detected by a thermometer device of a sensor crosses a threshold, a bridge of a cutoff device is retracted disconnecting the two pieces of the cable to prevent any further increase in temperature due to charging. The thermometer device and cutoff device are housed in the interior space of a casing. The casing attaches to the cable.