# US 10,502,117 B2 · Heat storage system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,117 B2 - Document ID: US10502117B2 - Status: Granted - Kind: B2 - Application number: 15/329,617 - Filed: 2015-07-09 - Published: 2017-08-03 - Granted: 2019-12-10 - Earliest claimed: 2014-07-29 - Assignees: Denso Corporation - Applicants: Denso Corporation - Inventors: Takuya Fuse; Shinya Kasamatsu; Yasushi Kono - Web page: https://patentgrep.com/patent/US10502117B2 ## CPC - F01N 5/02: the devices using heat - B60H 1/00492: {comprising regenerative heating or cooling means, e.g. heat accumulators} - B60H 1/00499: {Heat or cold storage without phase change including solid bodies, e.g. batteries} - F01N 3/20: specially adapted for catalytic conversion (F01N3/22 takes precedence) - F01N 3/206: {Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents} - F01N 3/24: characterised by constructional aspects of converting apparatus (filtering in combination with catalytic reactors F01N3/035) - F01P 3/20: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) - F28D 20/0056: {using solid heat storage material (F28D20/0052 takes precedence)} - F28D 20/02: using latent heat - F28F 7/02: Blocks traversed by passages for heat-exchange media {(F28D7/0008 takes precedence)} - B60Y 2200/92: Hybrid vehicles - F01N 2610/10: the substance being heated, e.g. by heating tank or supply line of the added substance - F01P 2060/04: Lubricant cooler - F28D 17/02: using rigid bodies, e.g. of porous material - F28D 2020/0078: {Heat exchanger arrangements} - F28D 2021/008: {for vehicles} - F28F 21/081: {Heat exchange elements made from metals or metal alloys} - Y02E 60/14: Thermal energy storage - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A heat storage system has a heat source that generates heat and releases the heat to a first heat medium and a heat storage body that stores heat. The heat storage body changes to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and changes to a second phase in a solid state when a temperature of the heat storage body exceeds the phase transition temperature. The heat storage body stores or releases heat due to a phase transition between the first phase and the second phase. A mode of operation of the heat storage body is switchable between a heat storage mode in which the heat storage body stores heat of the first heat medium and a heat release mode in which the heat storage body releases the heat stored in the heat storage body to a heat transfer target. ## Claims ### Claim 1 A heat storage system comprising: a heat source that is operable to generate heat and release the heat to a first heat medium; a heat storage body that is operable to store the heat released from the heat source via the first heat medium; and a flow passage through which the first heat medium can flow between the heat source and the heat storage body, wherein the heat storage body is operable to change to a first phase in a solid state when a temperature of the heat storage body is lower than or equal to a phase transition temperature, and is operable to change to a second phase in a solid state when a temperature of the heat storage body exceeds the phase transition temperature, the heat storage body is operable to store or release heat due to a phase transition between the first phase and the second phase, and wherein a mode of operation of the heat storage body is switchable between a heat storage mode in which the heat storage body stores heat of the first heat medium and a heat release mode in which the heat storage body releases the heat stored in the heat storage body to a heat transfer target. ### Claim 2 (depends on 1) The heat storage system according to claim 1, the heat storage system being disposed in a vehicle, wherein the heat source is an energy converter that is operable to release heat to the first heat medium when converting an energy supplied from outside of the vehicle into driving energy for running the vehicle. ### Claim 3 (depends on 2) The heat storage system according to claim 2, wherein the first heat medium is a liquid that can receive heat from or supply heat to the energy converter. ### Claim 4 (depends on 2) The heat storage system according to claim 2, wherein the first heat medium is a gas that can be discharged from the energy converter. ### Claim 5 (depends on 3) The heat storage system according to claim 3, wherein the heat transfer target is the energy converter, and the heat storage body is configured to release heat stored in the heat storage body to the energy converter through the first heat medium in the heat release mode. ### Claim 6 (depends on 3) The heat storage system according to claim 3, wherein the heat transfer target is a heating target other than the energy converter, the vehicle has a second heat medium passage in which a second heat medium for receiving or supplying heat between the heat storage body may flow, and the heat storage body is operable to release heat stored in the heat storage body to the heating target through the second heat medium in the heat release mode. ### Claim 7 (depends on 4) The heat storage system according to claim 4, wherein the heat transfer target is a heating target other than the energy converter, and the heat storage body is operable to release heat stored in the heat storage body to the heating target through the first heat medium in the heat release mode. ### Claim 8 (depends on 4) The heat storage system according to claim 4, wherein the heat transfer target is the energy converter, the vehicle has a second heat medium passage in which a second heat medium for receiving or supplying heat between each of the heat storage body and the energy converter may flow, the second heat medium passage is provided separately from a first heat medium passage in which the first heat medium may flow, the heat storage body is operable to store heat of the first heat medium in the heat storage mode, and the heat storage body is operable to release the heat stored in the heat storage body to the energy converter through the second heat medium in the heat release mode. ### Claim 9 (depends on 1) The heat storage system according to claim 1, wherein the heat storage body has a heat storage layer that is made of a strongly correlated electron system compound and a high heat conductivity layer that is made of a material having a greater heat conductivity relative to the heat storage layer. ### Claim 10 (depends on 1) The heat storage system according to claim 1, wherein the heat storage body is configured by a compound that includes a strongly correlated electron system compound and an inorganic compound. ### Claim 11 (depends on 1) The heat storage system according to claim 1, wherein the heat storage body has a heat storage layer that is made of a strongly correlated electron system compound and a heat transfer part that is operable to increase a heat transfer area transferring heat between the heat storage layer. ### Claim 12 (depends on 1) The heat storage system according to claim 1, wherein the heat storage body includes a heat storage material that is operable to store the heat released from the heat source via the first heat medium, the heat storage material of the heat storage body is operable to change to the first phase in a solid state when a temperature of the heat storage material is lower than or equal to the phase transition temperature, and change to the second phase in a solid state when a temperature of the heat storage material exceeds the phase transition temperature, the heat storage body includes a body portion made of the heat storage material, the body portion has a rectangular cuboid shape, and the body portion includes multiple holes through which the first heat medium may pass.