Modular Inverter Safety Door with Spring-Loaded Latch
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Solution Overview
Problem
Conventional power management systems for micro-level power generation, such as solar and wind power, face challenges in efficiently converting and storing energy due to voltage and frequency mismatches with the national electrical grid, and lack modular and safe solutions for expanding or maintaining power infrastructure.
Innovation Solution
A modular inverter system with swappable modules, including inverter/charger modules, charge controller modules, and a system controller, that can handle various power sources and sinks, featuring a safety door mechanism to prevent accidental shock or short circuits, allowing for hot-swapping and easy expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power management systems are used for micro-level power generation, then voltage and frequency mismatches with the national electrical grid occur, but efficient energy conversion and grid-tie-in are prevented
Solution Approach 1:
The inverter/charger module dynamically adjusts electrical parameters (voltage, frequency, current) to match grid requirements. The system converts DC from solar panels or wind turbines into AC electricity with controlled voltage and frequency that conforms to national grid standards, enabling reliable grid connection while maintaining high conversion efficiency through parameter optimization
2Object-affected harmful factors
If modular inverter system with safety door mechanism is implemented, then protection against accidental shock or short circuits is improved, but device complexity increases
Solution Approach 1:
The system divides the enclosure into multiple receptacles, each with its own independent safety door mechanism. This segmentation allows each module to be independently protected and managed, providing comprehensive safety coverage while keeping individual door mechanisms simple and manageable through modular design
Solution Approach 2:
The spring-loaded latching mechanism automatically engages the safety door in a closed, protected position before any module insertion or removal operation. This preliminary action ensures protection is already in place, preventing accidental shock or short circuits from occurring during maintenance or module swapping operations
3Ease of operation
If hot-swapping capability is added to modular inverter system, then ease of maintenance and expansion is improved, but risk of accidental shock or short circuits increases
Solution Approach 1:
Before allowing module insertion or removal, the spring-loaded latching mechanism ensures the safety door is already closed and electrically isolated. This preliminary protective action enables hot-swapping operations to be performed safely without exposing users to electrical hazards, maintaining both ease of operation and safety
Solution Approach 2:
The safety door acts as an intermediary barrier between the user and electrical components during hot-swapping operations. It provides physical and electrical isolation, mediating the interaction between the module and the receptacle while preventing direct contact with live electrical parts, thus enabling safe maintenance and expansion
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 efficient energy conversion and storage, allows for continuous power generation and grid-tie-in, even when the battery is fully charged, and provides a safe and modular solution for managing power sources and sinks, facilitating easy maintenance and expansion.
Implementation Method 1
The latching mechanism is spring-loaded to bias the safety door toward a closed position
Implementation Method 2
The hinge is biased to force the safety door toward a closed position. The hinge may include a cam mechanism that converts rotational motion to linear motion
Data Source
AI summary
Systems, apparatuses, and methods for a module door having a biased latching mechanism providing safety measures to prevent accidental shock or short circuit. In an embodiment, a modular inverter system may include an empty module receptacle that includes a cavity configured to receive any modular power device. The cavity may be covered by a module door that features a rigid door member. The rigid door member may have a hinge set on one edge that is further attached to the enclosure for the module. The hinge allows for the module door to rotate open and closed. The module door further includes a latching mechanism that holds the module door in a closed position when latched. The module door also includes a disengagement orifice that is configured to receive a disengagement protrusion positioned in the back side of a power module about to inserted into the empty module receptacle. The disengagement protrusion may penetrate the disengagement orifice thereby unlatching the module door and allowing the module door to swing open.