# US 11,897,322 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 11,897,322 B2 - Document ID: US11897322B2 - Status: Granted - Kind: B2 - Application number: 17/387,306 - Filed: 2021-07-28 - Published: 2022-02-03 - Granted: 2024-02-13 - Earliest claimed: 2020-07-30 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Yutaroh Gotoh; Yukinari Tanabe; Yugo Mochizuki - Web page: https://patentgrep.com/patent/US11897322B2 ## CPC - B60K 1/04: of the electric storage means for propulsion - H01M 10/613: Cooling or keeping cold - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 50/66: {Arrangements of batteries} - H01M 10/61: Types of temperature control - H01M 10/625: Vehicles - H01M 10/6554: Rods or plates - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/6561: Gases - H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings - H01M 10/6569: Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation (heat pipes H01M10/6552) - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - 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) - B60K 2001/005: {the electric storage means} - B60K 2001/0438: {Arrangement under the floor} - B60L 2240/36: Temperature of vehicle components or parts - B60L 2240/545: Temperature - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A power storage device is a power storage device provided on a lower surface of a floor panel of a vehicle, the power storage device including: a housing case; a power storage module housed in the housing case; and a cooler housed in the housing case to cool the power storage module, wherein the housing case includes a bottom plate, a refrigerant passage through which a refrigerant flows is formed in a portion of the housing case, the portion being located above the bottom plate, and the refrigerant passage is connected to the cooler. ## Claims ### Claim 1 A power storage device provided below a floor panel of a vehicle, the power storage device comprising: a housing case; a power storage module housed in the housing case; and a cooler housed in the housing case to cool the power storage module, wherein the housing case includes a bottom plate and a peripheral wall portion extending upward from the bottom plate, a refrigerant passage through which a refrigerant flows is formed in the peripheral wall portion of the housing case, and the refrigerant passage is connected to the cooler. ### Claim 2 (depends on 1) The power storage device according to claim 1, wherein the vehicle includes a body frame, and the housing case includes tag peripheral wall portion extending upward from the bottom plate and disposed at a position adjacent to the body frame. ### Claim 3 (depends on 1) The power storage device according to claim 1, wherein the refrigerant passage includes a supply passage that supplies the refrigerant to the cooler, and a discharge passage through which the refrigerant discharged from the cooler flows, and the supply passage is located above the discharge passage. ### Claim 4 (depends on 1) The power storage device according to claim 1, wherein the housing case includes a first side wall portion located on one end side in a width direction of the vehicle, and a second side wall portion located on the other end side in the width direction, and the refrigerant passage is formed in the first side wall portion. ### Claim 5 (depends on 4) The power storage device according to claim 4, wherein the vehicle includes an engine, and an exhaust pipe connected to the engine, and the second side wall portion is disposed at a position adjacent to the exhaust pipe. ### Claim 6 (depends on 1) The power storage device according to claim 1, wherein the vehicle includes an engine, and an exhaust pipe connected to the engine, the housing case includes a first side wall portion located on one end side in a width direction of the vehicle, and a second side wall portion located on the other end side in the width direction, the refrigerant passage includes a supply passage that supplies the refrigerant to the cooler, and a discharge passage through which the refrigerant discharged from the cooler flows, the supply passage is formed in the first side wall portion, the discharge passage is formed in the second side wall portion, and the second side wall portion is disposed at a position adjacent to the exhaust pipe. ### Claim 7 (depends on 1) The power storage device according to claim 1, wherein the cooler is disposed on a lower surface of the power storage module. ### Claim 8 (depends on 1) The power storage device according to claim 1, wherein the housing case includes a cover member on an upper surface of the housing case. ### Claim 9 (depends on 1) The power storage device according to claim 1, wherein the power storage module comprises a module case, the module case including one or more walls and a second bottom plate.