# US 11,909,017 B2 · Power storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,909,017 B2 - Document ID: US11909017B2 - Status: Granted - Kind: B2 - Application number: 17/311,093 - Filed: 2019-11-21 - Published: 2022-02-10 - Granted: 2024-02-20 - Earliest claimed: 2018-12-20 - Assignees: Kabushiki Kaisha Toyota Jidoshokki; Toyota Jidosha Kabushiki Kaisha - Applicants: Kabushiki Kaisha Toyota Jidoshokki; Toyota Jidosha Kabushiki Kaisha - Inventors: Hirokazu Kotake; Takafumi Yamasaki; Tsuyoshi Mariya; Daiki Terashima; Satoshi Morioka; Yusuke Hase; Motoyoshi Okumura - Web page: https://patentgrep.com/patent/US11909017B2 ## CPC - H01M 10/613: Cooling or keeping cold - H01M 10/6567: Liquids - H01G 2/08: Cooling arrangements; Heating arrangements; Ventilating arrangements - H01G 11/10: Multiple hybrid or EDL capacitors, e.g. arrays or modules (housings, cases, encapsulations or mountings thereof H01G11/78) - H01M 10/0418: {with bipolar electrodes} - H01M 10/0468: {Compression means for stacks of electrodes and separators} - H01M 10/0481: {Compression means other than compression means for stacks of electrodes and separators} - H01M 10/617: for achieving uniformity or desired distribution of temperature - H01M 10/625: Vehicles - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/6557: arranged between the cells - H01M 10/6563: with forced flow, e.g. by blowers - H01M 10/6566: Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers (H01M10/6565 takes precedence) - H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames - H01M 50/289: characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471) - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A power storage device includes a plurality of laminated power storage modules, a flow path member disposed in contact with the power storage modules and having flow paths for allowing a cooling medium to flow along a first direction intersecting a laminating direction of the power storage modules, a pair of restraining plates disposed to sandwich the power storage modules and the flow path member in the laminating direction, fastening members applying a restraining load to the power storage modules and the flow path member via the pair of restraining plates by fastening the restraining plates to each other, and a lead-in duct disposed at one end portion of the flow path member in the first direction and leading the cooling medium into each of the flow paths. ## Claims ### Claim 1 A power storage device comprising: a plurality of laminated power storage modules; a flow path member disposed in contact with the power storage modules and having a plurality of flow paths configured to allow a cooling medium to flow along a first direction intersecting a laminating direction of the power storage modules; a pair of restraining plates disposed to sandwich the plurality of power storage modules and the flow path member in the laminating direction; a plurality of fastening members configured to apply a restraining load to the plurality of power storage modules and the flow path member via the pair of restraining plates by fastening the pair of restraining plates to each other; and a lead-in duct disposed at one end portion of the flow path member in the first direction and configured to lead the cooling medium into each of the plurality of flow paths, wherein the plurality of fastening members include a plurality of first fastening members arranged along an extending direction of the lead-in duct at one end portion of the restraining plate in the first direction, and each of the plurality of first fastening members extends along the laminating direction to pass through the inside of the lead-in duct. ### Claim 2 (depends on 1) The power storage device according to claim 1, further comprising: a lead-out duct disposed at the other end portion of the flow path member in the first direction and configured to allow the cooling medium led out of each of the plurality of flow paths to flow, wherein the plurality of fastening members include a plurality of second fastening members arranged along an extending direction of the lead-out duct at the other end portion of the restraining plate in the first direction, and each of the plurality of second fastening members extends along the laminating direction to pass through the inside of the lead-out duct. ### Claim 3 (depends on 2) The power storage device according to claim 2, wherein the lead-in duct is provided with a lead-in port configured to lead the cooling medium into the lead-in duct, the lead-out duct is provided with a lead-out port configured to lead the cooling medium out of the lead-out duct, the lead-in port and the lead-out port are located on one end portion side in an arrangement direction of the plurality of flow paths, and the plurality of first fastening members are disposed such that a space between the first fastening members adjacent to each other increases as a distance from the lead-in port increases. ### Claim 4 (depends on 2) The power storage device according to claim 2, wherein the lead-in duct is provided with a lead-in port configured to lead the cooling medium into the lead-in duct, the lead-out duct is provided with a lead-out port configured to lead the cooling medium out of the lead-out duct, the lead-in port is located on one end portion side in an arrangement direction of the plurality of flow paths, the lead-out port is located on the other end portion side in an arrangement direction of the plurality of flow paths, and the plurality of first fastening members are disposed such that a space between the first fastening members adjacent to each other decreases as a distance from the lead-in port increases. ### Claim 5 (depends on 1) The power storage device according to claim 1, further comprising: a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted. ### Claim 6 (depends on 2) The power storage device according to claim 2, further comprising: a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted. ### Claim 7 (depends on 3) The power storage device according to claim 3, further comprising: a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted. ### Claim 8 (depends on 4) The power storage device according to claim 4, further comprising: a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted.