Staggered Power Connector Terminals for Inrush-Free Mating
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Solution Overview
Problem
Inrush currents during the connection of power supply apparatus and electrical devices can cause damage to internal components, as existing suppression methods are inadequate in preventing these sudden surges.
Innovation Solution
The electrical connection protection system features a configuration where the negative pole terminals contact each other before the positive pole terminals, preventing inrush currents by ensuring the negative pole terminals have a greater height than the positive pole terminals, thus establishing a safe and controlled electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery apparatus is plugged into the battery apparatus connection port, then electrical connection is established, but inrush current arises causing damage to internal electrical components
Solution Approach 1:
The negative pole terminal is designed with greater height than the positive pole terminal, so that during connection the negative pole contacts first before the positive pole. This preliminary action of establishing negative pole connection before positive pole connection prevents inrush current from damaging internal electrical components.
Solution Approach 2:
The connection structure employs asymmetric terminal heights where the negative pole terminal protrudes more than the positive pole terminal. This asymmetry ensures a specific contact sequence during plugging operation, with the negative pole making contact first, thereby controlling the electrical connection process to prevent inrush current.
2Reliability
If suppression components are added on the circuit board, then inrush current is suppressed, but device complexity increases
Solution Approach 1:
The inrush current suppression function is extracted from the circuit board and implemented through the mechanical connection structure itself. By designing the terminal heights asymmetrically, the connection structure inherently prevents inrush current without requiring additional suppression components on the circuit board.
Solution Approach 2:
The terminal height difference acts as an intermediary mechanism that controls the connection sequence. This structural intermediary ensures the negative pole contacts first, providing passive inrush current protection without adding active electronic components to the circuit board.
Data Source
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AI summary
The present invention relates to the technical field of electrical connection protection, disclosing an electrical connection protection system, an electrical protection connecting head, an electrical device and a power supply apparatus. The electrical connection protection system comprises a first connection end for a power supply apparatus and a second connection end for an electrical device, the first connection end and the second connection end respectively comprising positive pole terminals capable of contacting each other to establish an electrical connection and negative pole terminals capable of contacting each other to establish an electrical connection, wherein when the first connection end and the second connection end are connected, the negative pole terminals of the first connection end and the second connection end contact each other before the positive pole terminals of the first connection end and the second connection end. Thus, an inrush current can be prevented from arising at the instant when the power supply apparatus and the electric device are connected, in order to prevent damage to internal electrical components of the electrical device and the power supply apparatus.