# US 2024/0405302 A1 · Power storage device and vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0405302 A1 - Document ID: US20240405302A1 - Status: Published application - Kind: A1 - Application number: 18/640,388 - Filed: 2024-04-19 - Published: 2024-12-05 - Earliest claimed: 2023-05-29 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Keisuke UKITA; Yusuke KURUMA; Tsubasa MIGITA; Kei MORIKAWA; Yasumasa OGUMA - Web page: https://patentgrep.com/patent/US20240405302A1 ## CPC - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors} - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - H01M 10/0562: Solid materials - H01M 10/52: Removing gases inside the secondary cell, e.g. by absorption (vent plugs or other mechanical arrangements for facilitating escape of gases H01M50/30) - 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 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - H01M 2300/0068: inorganic - Y02E 60/10: Energy storage using batteries - 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 ## Abstract A power storage device is a power storage device including: a battery cell having a sulfide solid electrolyte; a case that accommodates the battery cell; and at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide, wherein a protruding portion is formed in a bottom surface of an inner surface of the case, and the gas collection unit is disposed in the protruding portion. ## Claims ### Claim 1 A power storage device comprising: a battery cell having a sulfide solid electrolyte; a case that accommodates the battery cell; and at least one gas collection unit that is disposed in the case and that detects hydrogen sulfide, wherein a protruding portion is formed in an inner surface of the case, the protruding portion protruding from the inner surface of the case toward outside of the case, and the gas collection unit is disposed in the protruding portion. ### Claim 2 (depends on 1) The power storage device according to claim 1, wherein the gas collection unit is a gas detection sensor. ### Claim 3 (depends on 1) The power storage device according to claim 1, wherein a plurality of the gas collection units are provided, and when a direction in which the protruding portion protrudes from the inner surface of the case toward the outside of the case is defined as a protruding direction, the plurality of the gas collection units are disposed in the protruding portion at different positions in the protruding direction. ### Claim 4 (depends on 1) The power storage device according to claim 1, wherein the inner surface of the case includes a mounting surface on which the battery cell is disposed, and the protruding portion is formed to protrude toward the outside of the case with respect to the mounting surface. ### Claim 5 (depends on 1) The power storage device according to claim 1, wherein the case includes a bottom plate, and the protruding portion is a groove portion formed by deforming the bottom plate so as to protrude toward the outside of the case. ### Claim 6 (depends on 1) A vehicle comprising the power storage device according to claim 1, wherein the power storage device is mounted on the vehicle such that the protruding portion protrudes downward. ### Claim 7 (depends on 6) The vehicle according to claim 6, wherein the case includes a bottom plate, the protruding portion is a groove portion formed by deforming the bottom plate so as to protrude downward, and the groove portion is formed to extend in a forward/backward direction of the vehicle. ### Claim 8 (depends on 6) The vehicle according to claim 6, wherein the case includes a bottom plate, the protruding portion is a groove portion formed by deforming the bottom plate so as to protrude downward, and the groove portion is formed to extend in a width direction of the vehicle.