Photovoltaic Connector Detachable Design for Reliable Electrical Contact
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Solution Overview
Problem
Existing PV connectors often suffer from poor electrical contact and are difficult to disassemble, leading to reduced service life due to self-locking snap connections that can damage components during disassembly.
Innovation Solution
A PV connector design featuring detachable connecting units with threaded connections and waterproof seals, allowing for reliable electrical contact and easy assembly/disassembly, including a first and second connecting unit with conductors, housings, and conductor cores connected via press and threaded connections, and utilizing stop rings and locking rings for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-locking snap connection is used to achieve fast assembly, then assembly speed is improved, but disassembly difficulty increases and component damage risk increases
Solution Approach 1:
The connector is divided into separable male and female connectors with distinct connection and disconnection mechanisms. The male connector includes a connection body with connection tongue, while the female connector has a connection socket with elastic piece, allowing independent optimization of each part's function.
Solution Approach 2:
The elastic piece (spring element) provides dynamic response during connection and disconnection. During assembly, it deflects to allow tongue insertion, then rebounds to lock the connection. During disassembly, it enables controlled release when the tongue is pulled out, facilitating easy separation without damage.
2Productivity
If self-locking snap connection is used to achieve fast assembly, then assembly speed is improved, but electrical contact quality deteriorates
Solution Approach 1:
The connection tongue and connection socket are designed with specific local geometries to ensure optimal electrical contact. The tongue has a contact end that fits precisely into the socket, creating a dedicated high-quality electrical contact interface separate from the mechanical locking function.
Solution Approach 2:
The elastic piece acts as an intermediary that ensures reliable electrical contact by maintaining constant pressure between the tongue and socket contact surfaces. This spring-loaded contact mechanism compensates for manufacturing tolerances and wear, preserving electrical contact quality.
3Ease of operation
If snap connection components are made detachable for easy disassembly, then ease of operation is improved, but connection reliability may deteriorate
Solution Approach 1:
The connector design allows automatic self-locking upon assembly without requiring additional fastening steps. The elastic piece automatically engages the tongue in the socket, creating a secure connection that maintains reliability while remaining easily detachable by applying separation force.
Data Source
AI summary
Embodiments of the present invention provide a photovoltaic (PV) connector, comprising a first connecting unit and a second connecting unit detachably connected with the first connecting unit, wherein the first connecting unit includes a first conductor, a first stop ring, a first housing and a first conductor core provided inside and detachably connected to the first housing; the first conductor is electrically connected with a pressing end of the first conductor core; the first stop ring is detachably connected with the first housing; the second connecting unit includes a second conductor, a second housing, a second stop ring and a second conductor core provided inside and detachably connected to the second housing; the second conductor is electrically connected with a pressing end of the second conductor core; the second stop ring is detachably connected with the second housing.