# US 12,180,921 B2 · Renewable energy generation system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,180,921 B2 - Document ID: US12180921B2 - Status: Granted - Kind: B2 - Application number: 18/105,342 - Filed: 2023-02-03 - Published: 2023-08-24 - Granted: 2024-12-31 - Earliest claimed: 2022-02-21 - Assignees: Hyundai Motor Company; Kia Corporation - Applicants: Hyundai Motor Company; Kia Corporation - Inventors: Dong Hyun Ha; Jung Hun Choi; Jae Wung Jung - Web page: https://patentgrep.com/patent/US12180921B2 ## CPC - F03B 13/22: using the flow of water resulting from wave movements to drive a motor or turbine {(F03B13/144 takes precedence)} - H02J 7/70: characterised by the mechanical construction - Y02E 10/30: Energy from the sea, e.g. using wave energy or salinity gradient - F03B: MACHINES OR ENGINES FOR LIQUIDS (positive-displacement engines for liquid F03C; machines for liquids and gases F01; positive-displacement machines for liquids F04, rotary fluid gearing of the hydrokinetic type F16H41/00) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A renewable energy storage that floats in the sea and is connected to a renewable energy power generator that produces power by converting wave energy into electrical energy, includes a housing configured to be connected to the renewable energy power generator using a cable; a first cabin configured to be coupled to or separated from a battery, which is configured to store the electrical energy; and a second cabin configured to be coupled to or separated from a transportation, which is configured to transfer the battery. ## Claims ### Claim 1 A renewable energy storage apparatus that floats in the sea and is connected to a renewable energy power generator that produces power by converting wave energy into electrical energy, the renewable energy storage apparatus comprising: a housing configured to be connected to the renewable energy power generator using a cable; a turbine configured to convert a horizontal motion of sea currents into rotational motion for tidal power generation and including a motor configured to produce electrical energy by converting the rotational motion of the turbine and to function as a propulsion motor for propelling the renewable energy storage apparatus, wherein, the housing includes a first adaptive coupling portion formed on an upper surface of the housing, and a second adaptive coupling portion formed on the upper surface of the housing, wherein a battery configured to store the electrical energy is moved to be coupled to or separated from the first adaptive coupling portion by a transportation, wherein the transportation is moved to be coupled to or separated from the second adaptive coupling portion, the transportation being capable of coupling to the second adaptive coupling portion, wherein the renewable energy power generator is connected to the housing through a cable, and wherein the renewable energy storage apparatus is configured to receive and store electrical energy from the renewable energy power generator and subsequently charge and transfer the electrical energy to both the battery and the transportation. ### Claim 2 (depends on 1) The renewable energy storage apparatus of claim 1, further including a connecting member coupled to a bottom portion of the housing, and connecting the turbine and the housing. ### Claim 3 (depends on 2) The renewable energy storage apparatus of claim 2, wherein the connecting member is configured so that a length thereof is adjustable. ### Claim 4 (depends on 3) The renewable energy storage apparatus of claim 3, wherein the connecting member includes at least two frames telescopically coupled therebetween. ### Claim 5 (depends on 4) The renewable energy storage apparatus of claim 4, wherein the at least two frames include: a first frame connected to the housing; a second frame slidably coupled to the first frame; and a third frame slidably coupled to the second frame, wherein the first frame, the second frame and the third frame are telescopically coupled to each other so that the first frame, the second frame and the third frame are configured to be selectively inserted into or moved out of each other. ### Claim 6 (depends on 2) The renewable energy storage apparatus of claim 2, wherein the connecting member is rotatably coupled to the housing. ### Claim 7 (depends on 1) The renewable energy storage apparatus of claim 1, wherein the housing floats in the sea and has a shape of a disc. ### Claim 8 (depends on 1) The renewable energy storage apparatus of claim 1, further including a storage place configured so that the transportation is charged therefrom and stored therein. ### Claim 9 (depends on 1) The renewable energy storage apparatus of claim 1, wherein the renewable energy power generator has a roly-poly-like capsule shape. ### Claim 10 (depends on 9) The renewable energy storage apparatus of claim 9, wherein the renewable energy power generator is in plural, and wherein the plurality of renewable energy power generators are connected to each other in series or in parallel and are configured to surround the renewable energy storage apparatus. ### Claim 11 (depends on 1) The renewable energy storage apparatus of claim 1, wherein the renewable energy power generator is in plural, and wherein the plurality of renewable energy power generators are connected to each other in series or in parallel and are configured to surround the renewable energy storage apparatus.