Integral Inverter and Solar Cell Module Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The installation of solar cell modules is hindered by the need for separate manufacturing and installation of junction boxes and DC-AC inverters, which increases space and time requirements, and the bulky, heavy output cables cause installation difficulties and potential damage during transportation and use.
Innovation Solution
An integral inverter is developed, integrating a DC-AC inverter with a potting member that covers part of the inverter while exposing terminals, eliminating the need for separate output cables and simplifying the assembly process by integrating the inverter directly with the solar cell panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If junction box and DC-AC inverter are separately manufactured and installed, then each component can be optimized independently, but installation space and installation time are increased
Solution Approach 1:
The patent combines the junction box and DC-AC inverter into a single integrated unit. The inverter is directly mounted on the junction box housing, eliminating the need for separate installation of two components. This merging reduces installation space and time while maintaining the functional independence of each component through modular design.
2Reliability
If two output cables are used to connect junction box and DC-AC inverter, then electrical connection is achieved, but cables are bulky and heavy causing installation difficulty
Solution Approach 1:
The patent extracts and eliminates the heavy output cables from the system by providing direct electrical connection between the junction box and DC-AC inverter through integrated terminals. The inverter is electrically connected to the junction box via connection terminals that interface directly with the junction box terminals, removing the need for bulky external cables while maintaining reliable electrical connection.
3Reliability
If two output cables are used for connection, then electrical connection is established, but cables may be shaken or separated causing damage
Solution Approach 1:
The patent merges the junction box and DC-AC inverter into a single stable assembly where the inverter is mounted directly on the junction box housing. The electrical connection is established through fixed connection terminals that are structurally integrated, eliminating the movement and separation issues associated with external cables. The potting member further secures the inverter to the junction box, ensuring stable connection during transportation and use.
4Adaptability or versatility
If junction box and DC-AC inverter are separately installed, then installation flexibility is maintained, but assembly process productivity is low
Solution Approach 1:
The patent applies preliminary action by pre-integrating the DC-AC inverter with the junction box into a single assembled unit before deployment. The inverter is mounted on the junction box housing and electrically connected through integrated terminals in advance, creating a ready-to-install solar cell module. This preliminary integration significantly improves assembly productivity while maintaining installation flexibility at the system level.
Data Source
AI summary
Discussed is an integral inverter usable with a solar cell module including a solar cell panel. The integral inverter includes a terminal connected to the solar cell panel, an inverter member including a direct current (DC)-alternating current (AC) inverter electrically connected to the terminal and a potting member configured to cover at least a portion of the inverter member while exposing the terminal.