Gravity Block Storage with Counterweighted Elevator Cages
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Solution Overview
Problem
The intermittent and unpredictable nature of renewable energy sources, such as solar and wind power, poses a challenge for delivering a stable and predictable electricity supply to the grid.
Innovation Solution
A gravity-driven energy storage and delivery system that utilizes an elevator cage to move blocks from a lower elevation to a higher elevation during daylight hours to store energy and then back down to generate electricity at night, stabilizing the electrical grid by converting potential energy into kinetic energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If renewable energy sources (solar, wind) are used for power generation, then clean energy production is improved, but intermittency and unpredictability worsen the reliability of electricity delivery
Solution Approach 1:
The system performs preliminary action by capturing and storing renewable energy when available (daytime solar, windy periods) to prepare for future delivery when demand exists. The gravity storage system accumulates potential energy by lifting blocks during periods of excess renewable generation, enabling predictable electricity delivery during off-hours or calm periods when renewable sources are unavailable.
2Productivity
If blocks are moved vertically to store and generate energy, then energy storage and delivery capability is improved, but load variability on the tower structure worsens
Solution Approach 1:
The system applies counterweight principle by operating two elevator cages in opposite directions on the same tower. When one cage ascends to store energy (absorbing power), the other cage descends to generate energy (delivering power). This simultaneous opposite operation creates counterbalancing forces that stabilize the tower's total load, preventing the structural instability that would result from single-direction block movement.
3Device complexity
If single elevator cage operates on tower, then system simplicity is maintained, but energy delivery continuity worsens due to idle time
Solution Approach 1:
The system merges two elevator cage operations into a single integrated tower structure. Both cages share the same support infrastructure, counterweight mechanism, and control system, while operating simultaneously in opposite directions. This combination doubles the energy storage and delivery capacity without proportionally increasing overall system complexity, as the two operations are coordinated through a unified control architecture.
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
This system effectively captures and delivers renewable energy as predictable electricity, maintaining a constant load on the tower and generating electricity when needed, thus addressing the intermittency of renewable sources.
Implementation Method 1
move one or more blocks from a lower elevation to a higher elevation and operable to generate electricity by moving one or more blocks from a higher elevation to a lower elevation under the force of gravity
Implementation Method 2
generating an amount of electricity corresponding to a kinetic energy amount of said one or more blocks when moved from the higher elevation to the lower elevation
Data Source
AI summary
An energy storage and delivery system includes an elevator cage, where the elevator cage is operable to move one or more blocks from a lower elevation to a higher elevation to store energy (e.g., via the potential energy of the block in the higher elevation) and operable to move one or more blocks from the higher elevation to the lower elevation (e.g., by gravity) to generate electricity (e.g., via the kinetic energy of the block when moved to the lower elevation). The blocks are moved between the lower elevation and the higher elevation by an equal vertical distance.