Battery Clip Voltage Detection for Short-Circuit Connection Safety
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Solution Overview
Problem
Existing jump starter products lack effective short-circuit identification and detection, leading to potential safety accidents when the positive and negative electrodes of the battery clip are short-circuited or incorrectly connected.
Innovation Solution
A device for connection detection is introduced, comprising a power connecting end, a load connecting end, a switch circuit, a voltage control circuit, and a voltage detecting circuit. This device detects the voltage of the load connecting end to determine the connection state and control the switch circuit to prevent power output in abnormal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a forced output button is pressed for forced output when the battery clip is short-circuited or reversely connected, then power can be output, but this causes short circuit of the battery cells or safety accidents
Solution Approach 1:
The voltage detecting circuit performs preliminary detection of the load connecting end voltage before the power module outputs power. When the voltage is abnormal (short circuit or reverse connection), the switch circuit is pre-configured to remain disconnected, preventing power output before the harmful condition can cause damage. This resolves the contradiction by enabling forced output functionality while maintaining safety through advance detection and control.
Solution Approach 2:
The voltage detecting circuit continuously monitors the voltage at the load connecting end and provides feedback to the control circuit. Based on this feedback, the control circuit adjusts the switch circuit state to enable or disable power output. This feedback mechanism allows the system to maintain safety while permitting forced output under normal conditions, resolving the contradiction between operational flexibility and circuit safety.
2Reliability
If voltage detection and control circuits are added to detect connection states, then circuit safety is improved, but device complexity increases
Solution Approach 1:
The voltage detecting circuit serves multiple functions: it detects short circuit conditions, detects reverse connection conditions, and provides voltage information for control decisions. By making this single circuit multi-functional, the patent achieves comprehensive safety monitoring without proportionally increasing device complexity, thus resolving the contradiction between improved reliability and increased complexity.
Solution Approach 2:
The patent combines the voltage detection function and the control function into an integrated system where the voltage detecting circuit, control circuit, and switch circuit work together as a unified safety mechanism. This merging approach achieves comprehensive safety monitoring while minimizing the increase in device complexity through functional integration rather than separate independent systems.
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 device effectively identifies abnormal connection states such as short circuits or reverse connections, preventing power output and enhancing the safety and reliability of the circuit, thereby avoiding potential safety accidents.
Implementation Method 1
a voltage detecting circuit, in electrical connection with the load connecting end and configured to detect a voltage of the load connecting end and output a corresponding voltage detection signal
Data Source
AI summary
A device for connection detection is provided. The device includes: a power connecting end, in electrical connection with a power module; a load connecting end, in electrical connection with an external load; a switch circuit, electrically connected between the power connecting end and the load connecting end; a voltage control circuit, in electrical connection with the load connecting end and configured to output a voltage through the load connecting end; and a voltage detecting circuit, in electrical connection with the load connecting end and configured to measure voltage of the load connecting end and output a voltage detection signal, the voltage detection signal being configured to control an ON/OFF state of the switch circuit. A jump starter apparatus including the device for connection detection and a battery clip including the device for connection detection are further provided.