# US 12,183,877 B2 · All solid battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,877 B2 - Document ID: US12183877B2 - Status: Granted - Kind: B2 - Application number: 17/321,084 - Filed: 2021-05-14 - Published: 2021-12-30 - Granted: 2024-12-31 - Earliest claimed: 2020-06-29 - Assignees: Taiyo Yuden Co., Ltd. - Applicants: Taiyo Yuden Co., Ltd. - Inventors: Sachie Tomizawa; Daigo Ito - Web page: https://patentgrep.com/patent/US12183877B2 ## CPC - H01M 10/0562: Solid materials - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 50/11: having a chip structure, e.g. micro-sized batteries integrated on chips - H01M 50/117: Inorganic material - H01M 50/54: Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges - H01M 50/545: formed by the casing of the cells (cup shaped terminals adapted for cells having curved cross-section H01M50/56) - H01M 50/548: on opposite sides of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - 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 - 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 An all solid battery includes a multilayer chip in which plurality of internal electrodes are alternately exposed to two side faces. A thickness SE of a solid electrolyte layer is 1 μm or more and 50 μm or less in an intersection portion in which two internal electrodes next to each other connected to different external electrodes overlap with each other. Thicknesses EL1 and EL2 of the two internal electrodes are 1 μm or more and 200 μm or less. In one of two non-intersection portions, a length EM from one of the pair of external electrodes contacting the one of the two non-intersection portions to an internal electrode spaced from the one of the pair of external electrodes in a distance direction is 50 μm or more and 800 μm or less. EM/(SE+EL1/4+EL2/4) is 20 or less. ## Claims ### Claim 1 An all solid battery comprising: a multilayer chip in which each of a plurality of solid electrolyte layers including a solid electrolyte and each of a plurality of internal electrodes including an electrode active material are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two side faces other than two end faces in a stacking direction of the multilayer chip; and a pair of external electrodes, each of which contacts each of the two side faces, wherein a thickness SE of the solid electrolyte layer is 5 μm or more and 40 μm or less in an overlap portion in which two internal electrodes immediately adjacent to each other directly connected to different external electrodes overlap with each other in a planar view of the two internal electrodes, wherein when thicknesses of the two internal electrodes are EL1 and EL2, both a half of EL1 and a half of EL2 are 5 μm or more and 180 μm or less, wherein, a length EM from one of the pair of external electrodes to an end of an internal electrode connected to an other of the pair of external electrodes in an extension direction of the internal electrode is 60 μm or more and 700 μm or less, and wherein EM/(SE+EL1/4+EL2/4) is 1 or more and 20 or less. ### Claim 2 (depends on 1) The all solid battery as claimed in claim 1, wherein EM/(SE+EL1/4+EL2/4) is 17.5 or less. ### Claim 3 (depends on 1) The all solid battery as claimed in claim 1, wherein EM/(SE+EL1/4+EL2/4) is 10 or less. ### Claim 4 (depends on 1) The all solid battery as claimed in claim 1, wherein EM is 200 μm or less, and wherein EM/(SE+EL1/4+EL2/4) is 10 or more and 20 or less. ### Claim 5 An all solid battery comprising: a multilayer chip in which each of a plurality of solid electrolyte layers including a solid electrolyte and each of a plurality of internal electrodes including an electrode active material are alternately stacked, the multilayer chip having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two side faces other than two end faces in a stacking direction of the multilayer chip; and a pair of external electrodes, each of which contacts each of the two side faces, wherein each pair of the plurality of internal electrodes has a structure in which an electric collector layer of which a main component is a conductive material is sandwiched, wherein a thickness SE of the solid electrolyte layer is 5 μm or more and 40 μm or less in an overlap portion in which two internal electrodes next to each other connected to different external electrodes overlap with each other in a planar view of the two internal electrodes, wherein when a total thickness of two internal electrode layers of one of the two internal electrodes is EL1 and a total thickness of two internal electrode layers of the other of the two internal electrodes is EL2, both a half of EL1 and a half of EL2 are 5 μm or more and 180 μm or less, wherein, a length EM from one of the pair of external electrodes to an end of an internal electrode connected to an other of the pair of external electrodes in an extension direction of the internal electrode is 60 μm or more and 700 μm or less, and wherein EM/(SE+EL1/4+EL2/4) is 1 or more and 20 or less. ### Claim 6 (depends on 5) The all solid battery as claimed in claim 5, wherein EM/(SE+EL1/4+EL2/4) is 17.5 or less. ### Claim 7 (depends on 5) The all solid battery as claimed in claim 5, wherein EM/(SE+EL1/4+EL2/4) is 10 or less. ### Claim 8 (depends on 5) The all solid battery as claimed in claim 5, wherein EM is 200 μm or less, and wherein EM/(SE+EL1/4+EL2/4) is 10 or more and 20 or less.