Energy storage system with elevator lift system
An energy storage and delivery system includes an elevator, where the elevator 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 a higher elevation to a 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 energy storage system can, for example, store electricity generated from solar power as potential energy in the stacked blocks during daytime hours when solar power is available, and can convert the potential energy in the stacked blocks into electricity during nighttime hours when solar energy is not available, and deliver the converted electricity to the electrical grid.
1. An energy storage and delivery system, comprising:
one or more modules, each module comprising
a plurality of blocks, and
a frame having a vertical height above a foundation, the frame including
a lower deck,
an upper deck spaced vertically above the lower deck,
an elevator shaft disposed between a left column and a right column of the frame that extend between the lower deck and the upper deck, and
an elevator movably disposed in the elevator shaft and operatively coupled to an electric motor-generator, the elevator sized to receive and support one or more blocks therein and operable to travel between a location above the lower deck and a location above the upper deck,
wherein the elevator is operable to raise and stack one or more blocks from a location in the left column above the lower deck to a location above the upper deck over the left column and to move and stack one or more blocks from a location in the right column above the lower deck to a location above the upper deck over the right column to thereby store different amounts of electrical energy corresponding to a potential energy amount of each of said one or more raised and stacked blocks based on different vertical travel distances of the one or more blocks stacked on the upper deck, and
wherein the elevator is operable to lower and stack one or more blocks from a location above the upper deck over the left column to a location within the left column above the lower deck and to move and stack one or more blocks from a location above the upper deck over the right column to a location within the right column above the lower deck under a force of gravity to thereby generate different amounts of electricity for each of the one or more lowered and stacked blocks via the electric motor-generator electrically coupled to the elevator based on different vertical travel distances of the one or more blocks stacked on the lower deck.
2. The system of claim 1 , wherein the elevator is operable to move the plurality of blocks between the location above the lower deck and the location above the upper deck so that an average distribution of load on the foundation of the module remains substantially constant.
3. The system of claim 1 , wherein the frame includes a plurality of columns of reinforced steel and concrete pillars.
4. The system of claim 1 , wherein each of the plurality of blocks has a rectangular shape with a planar upper surface and an opposite bottom surface with two or more protrusions and a recess between the two or more protrusions that define openings that extend across a depth of the block.
5. The system of claim 4 , wherein the bottom surface has a corrugated shape with a plurality of protrusions and a plurality of recesses, each recess defined between a pair of the protrusions.
6. The system of claim 4 , further comprising a jack movably coupled to the elevator and configured to move the one or more blocks to the left or right relative to the elevator, the jack configured to move the one or more blocks from the location within the left column above the lower deck onto the elevator, and to move said one or more blocks from the elevator to the location above the upper deck over the left column, the jack further configured to move the one or more blocks from the location within the right column above the lower deck onto the elevator, and to move said one or more blocks from the elevator to the location above the upper deck over the right column.
7. The system of claim 6 , wherein the jack is configured to move the one or more blocks from the location above the upper deck over the left column onto the elevator, and to move said one or more blocks from the elevator to the location within the left column over the lower deck, and wherein the jack is configured to move the one or more blocks from the location above the upper deck over the right column onto the elevator, and to move said one or more blocks from the elevator to the location within the right column over the lower deck.
8. The system of claim 6 , wherein the jack has a housing with multiple wheels that allow the jack to move relative to the elevator and one or more lift arms actuatable between a vertical orientation and a non-vertical orientation, wherein when the lift arms are in the non-vertical orientation the housing has a smaller height than the one or more recesses and can extend within the one or more recesses of the block to at least partially position the jack under the block, the lift arms actuatable into the vertical orientation to increase a height of the jack so that the housing engages and lifts the block from a supporting surface to allow the jack to support and move the block.
9. The system of claim 1 , wherein each module includes two elevator shafts, each elevator shaft disposed between adjacent left and right columns of the frame.
10. The system of claim 9 , wherein the one or more modules are five modules arranged in-line adjacent each other in a depth direction.
11. The system of claim 1 , wherein the plurality of blocks have a body made of one or more of concrete, steel and compacted dirt, the body having a rectangular shape with a planar top surface and a bottom surface having two or more protrusions that extend across a width of the body and a recess defined between the two or more protrusions, the two or more protrusions and the recess extending across a width of the body.
12. The system of claim 11 , wherein the bottom surface has a corrugated shape with a plurality of protrusions and a plurality of recesses, each recess defined between a pair of protrusions.
13. An energy storage and delivery system, comprising:
one or more modules, each module comprising
a plurality of blocks, and
a frame having a vertical height above a foundation, the frame including
a lower deck,
an upper deck spaced vertically above the lower deck,
an elevator shaft disposed between a left column and a right column of the frame that extend between the lower deck and the upper deck, and
an elevator movably disposed in the elevator shaft and operatively coupled to an electric motor-generator, the elevator sized to receive and support one or more blocks therein and operable to travel between a location above the lower deck and a location above the upper deck,
wherein the elevator is operable to raise one or more blocks from a location in the left column above the lower deck to a location above the upper deck over the left column and to move one or more blocks from a location in the right column above the lower deck to a location above the upper deck over the right column to thereby store an amount of electrical energy corresponding to a potential energy amount of said one or more raised blocks,
wherein the elevator is operable to lower one or more blocks from a location above the upper deck over the left column to a location within the left column above the lower deck and to move one or more blocks from a location above the upper deck over the right column to a location within the right column above the lower deck under a force of gravity to thereby generate an amount of electricity for each of the one or more lowered blocks via the electric motor-generator electrically coupled to the elevator,
wherein the elevator is rotatable in a horizontal plane about an elevator guide with respect to a vertical axis coinciding with a longitudinal axis running through the frame, and
wherein the elevator is configured to move a block of the plurality of blocks from the location above the lower deck to the location above the upper deck by operating the elevator to a) securely grab the block via a lip of the elevator that engages a shoulder of the block, b) rotate the block in the horizontal plane in a first direction to an angular position corresponding to the elevator shaft, c) raise the block to a location above the upper deck, d) rotate the block in a second direction opposite the first direction to a position above the upper deck, and e) release the block so that it rests on the upper deck or on a stack of blocks on the upper deck.
14. The system of claim 13 , wherein the plurality of blocks are arc shaped.
15. The system of claim 13 , wherein the electric motor-generator is operably connected to the elevator via one or more pulleys mounted at a top end of the elevator guide.
16. The system of claim 13 , wherein the one or more modules are five modules.
17. The system of claim 13 , wherein the elevator is operably connected to an elevator grabber configured to securely grab the block.
18. An energy storage and delivery system, comprising:
one or more modules, each module comprising
a plurality of blocks, and
a frame having a vertical height above a foundation, the frame including
a lower deck,
an upper deck spaced vertically above the lower deck,
an elevator shaft disposed between a left column and a right column of the frame that extend between the lower deck and the upper deck, and
an elevator movably disposed in the elevator shaft and operatively coupled to an electric motor-generator, the elevator sized to receive and support one or more blocks therein and operable to travel between a location above the lower deck and a location above the upper deck,
wherein the elevator is operable to raise one or more blocks from a location in the left column above the lower deck to a location above the upper deck over the left column and to move one or more blocks from a location in the right column above the lower deck to a location above the upper deck over the right column to thereby store an amount of electrical energy corresponding to a potential energy amount of said one or more raised blocks,
wherein the elevator is operable to lower one or more blocks from a location above the upper deck over the left column to a location within the left column above the lower deck and to move one or more blocks from a location above the upper deck over the right column to a location within the right column above the lower deck under a force of gravity to thereby generate an amount of electricity for each of the one or more lowered blocks via the electric motor-generator electrically coupled to the elevator,
wherein the elevator is rotatable in a horizontal plane about an elevator guide with respect to a vertical axis coinciding with a longitudinal axis running through the frame, and
wherein the elevator is configured to move a block of the plurality of blocks from the location above the upper deck to the location above the lower deck by operating the elevator to a) securely grab the block via a lip of the elevator that engages a shoulder of the block, b) rotate the block in the horizontal plane in a first direction to an angular position corresponding to the elevator shaft, c) lower the block to a location above the lower deck, d) rotate the block in a second direction opposite the first direction to a position above the lower deck, and e) release the block so that it rests on the lower deck or on a stack of blocks on the lower deck.
19. The system of claim 18 , wherein the plurality of blocks are arc shaped.
20. The system of claim 18 , wherein the electric motor-generator is operably connected to the elevator via one or more pulleys mounted at a top end of the elevator guide.