Safety Plug State Detection via Voltage Division
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Solution Overview
Problem
There is a need for an effective method to accurately detect the state of a safety plug in electric vehicle batteries to enhance user safety, as existing technologies are inadequate in monitoring the condition and preventing excessive current supply.
Innovation Solution
An apparatus and method that utilize a voltage output unit to apply a test voltage to distribution elements connected to the safety plug, allowing for the detection of the plug's state by measuring the voltage output, which includes a test voltage supply unit, resistors, and a controller to determine the plug's state and control the battery modules accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safety plug is used to switch connection between battery modules, then battery safety is improved, but the ability to accurately detect the plug's state deteriorates
Solution Approach 1:
The patent introduces distribution elements (resistors) as intermediary components between the safety plug and the detection system. These resistors form a voltage division network that converts the safety plug's connection state into measurable voltage signals, enabling indirect but accurate detection of the plug's state without directly interfacing with the plug itself.
Solution Approach 2:
The patent replaces direct mechanical or electrical contact detection with a voltage-based detection system. Instead of directly monitoring the safety plug's mechanical state, the system uses voltage output characteristics from the distribution elements to infer the plug's state, substituting a simpler electrical measurement for complex mechanical state detection.
2Device complexity
If existing detection methods are used, then device complexity is reduced, but the ability to prevent excessive current supply deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the voltage output from the distribution elements is continuously monitored and fed back to the battery control device. This feedback loop enables real-time detection of the safety plug's state and allows the control device to respond by preventing excessive current supply when abnormal conditions are detected, maintaining system safety through continuous monitoring and adjustment.
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
Enables accurate detection of the safety plug's state, preventing excessive current supply and ensuring safe operation of electric vehicle batteries by effectively monitoring and controlling the connection between battery modules.
Implementation Method 1
a voltage output unit configured to apply a test voltage to distribution elements operatively connected to the safety plug, and output a voltage varying based on a state of the safety plug
Data Source
AI summary
Provided is a method and apparatus for detecting a state of a safety plug. The apparatus includes a safety plug configured to switch a connection between battery modules. The apparatus also includes a voltage output unit configured to apply a test voltage to distribution elements operatively connected to the safety plug, and output a voltage varying based on a state of the safety plug.