# US 12,113,244 B2 · Battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,244 B2 - Document ID: US12113244B2 - Status: Granted - Kind: B2 - Application number: 17/343,644 - Filed: 2021-06-09 - Published: 2021-09-30 - Granted: 2024-10-08 - Earliest claimed: 2018-12-28 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: Eiichi Koga - Web page: https://patentgrep.com/patent/US12113244B2 ## CPC - H01M 50/572: Means for preventing undesired use or discharge - H01M 4/64: Carriers or collectors - H01M 10/0418: {with bipolar electrodes} - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 50/103: prismatic or rectangular (H01M50/109, H01M50/11 take precedence) - H01M 50/531: Electrode connections inside a battery casing - H01M 50/548: on opposite sides of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 10/0562: Solid materials - 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 A battery includes positive and negative electrode terminals, positive and negative electrode layers, a positive electrode current collector electrically connected to the positive electrode layer and the positive electrode terminal, a negative electrode current collector electrically connected to the negative electrode layer and the negative electrode terminal, a bipolar current collector positioned between the positive and negative electrode current collectors, a solid electrolyte layer positioned between the positive and negative electrode current collectors, and an insulating sealing member positioned between the positive and negative electrode current collectors and surrounding the solid electrolyte layer, wherein the positive electrode current collector and the negative electrode terminal are electrically isolated with a gap, the negative electrode current collector and the positive electrode terminal are electrically isolated with a gap, and the bipolar current collector is electrically isolated from the positive and negative electrode terminals with gaps. ## Claims ### Claim 1 A battery comprising: a positive electrode terminal and a negative electrode terminal; a positive electrode layer and a negative electrode layer; a positive electrode current collector electrically connected to each of the positive electrode layer and the positive electrode terminal; a negative electrode current collector electrically connected to each of the negative electrode layer and the negative electrode terminal; a bipolar current collector positioned between the positive electrode current collector and the negative electrode current collector; a solid electrolyte layer positioned between the positive electrode current collector and the negative electrode current collector; and an insulating sealing member positioned between the positive electrode current collector and the negative electrode current collector and surrounding the solid electrolyte layer, wherein; the positive electrode current collector and the negative electrode terminal are electrically isolated from each other with a first gap, the negative electrode current collector and the positive electrode terminal are electrically isolated from each other with a second gap, the bipolar current collector is electrically isolated from each of the positive electrode terminal and the negative electrode terminal with a third gap, each of the positive electrode current collector and the negative electrode current collector has an inner surface facing the insulating sealing member, an outer surface opposite to the inner surface and an end face connecting the inner surface and the outer surface, and the positive electrode terminal is in contact with the end face of the positive electrode current collector and/or the negative electrode terminal is in contact the end face of the negative electrode current collector. ### Claim 2 (depends on 1) The battery according to claim 1, further comprising: a first anchor member connected to the positive electrode terminal and electrically isolated from each of the negative electrode current collector and the bipolar current collector with a fourth gap; and a second anchor member connected to the negative electrode terminal and electrically isolated from each of the positive electrode current collector and the bipolar current collector with a fifth gap. ### Claim 3 (depends on 2) The battery according to claim 2, wherein part of the first anchor member is embedded in the positive electrode terminal, or part of the second anchor member is embedded in the negative electrode terminal. ### Claim 4 (depends on 3) The battery according to claim 3, wherein a portion of the first anchor member ranging from an end of the first anchor member through a distance of longer than or equal to 1 μm is embedded in the positive electrode terminal, or a portion of the second anchor member ranging from an end of the second anchor member through a distance of longer than or equal to 1 μm is embedded in the negative electrode terminal. ### Claim 5 (depends on 2) The battery according to claim 2, wherein a portion of the first anchor portion is embedded in the positive electrode terminal and another portion is embedded in the sealing member, or a portion of the second anchor portion is embedded in the negative electrode terminal and another portion is embedded in the sealing member. ### Claim 6 (depends on 2) The battery according to claim 2, wherein: the first anchor portion is arranged to be in line with at least one of the negative electrode current collector and the bipolar current collector in a first direction which is orthogonal to a laminating direction in which the positive electrode layer, the negative electrode layer, and the solid electrolyte layer are laminated, and the second anchor portion is arranged to be in line with at least one of the positive electrode current collector and the bipolar current collector in the first direction. ### Claim 7 (depends on 1) The battery according to claim 1, wherein the positive electrode terminal covers a principal surface of the positive electrode current collector, or the negative electrode terminal covers a principal surface of the negative electrode current collector. ### Claim 8 (depends on 1) The battery according to claim 1, wherein part of the positive electrode current collector is embedded in the positive electrode terminal, or part of the negative electrode current collector is embedded in the negative electrode terminal. ### Claim 9 (depends on 8) The battery according to claim 8, wherein a portion of the positive electrode current collector ranging from an end of the positive electrode current collector through a distance of longer than or equal to 1 μm is embedded in the positive electrode terminal, or a portion of the negative electrode current collector ranging from an end of the negative electrode current collector through a distance of longer than or equal to 1 μm is embedded in the negative electrode terminal. ### Claim 10 A battery comprising: a positive electrode terminal and a negative electrode terminal; a positive electrode layer and a negative electrode layer; a positive electrode current collector electrically connected to each of the positive electrode layer and the positive electrode terminal; a negative electrode current collector electrically connected to each of the negative electrode layer and the negative electrode terminal; a bipolar current collector positioned between the positive electrode current collector and the negative electrode current collector; a solid electrolyte layer positioned between the positive electrode current collector and the negative electrode current collector; and an insulating sealing member positioned between the positive electrode current collector and the negative electrode current collector and surrounding the solid electrolyte layer, wherein: the positive electrode current collector and the negative electrode terminal are electrically isolated from each other with a first gap, the negative electrode current collector and the positive electrode terminal are electrically isolated from each other with a second gap, the bipolar current collector is electrically isolated from each of the positive electrode terminal and the negative electrode terminal with a third gap, and the positive electrode current collector is electrically connected to the positive electrode terminal with a first alloy, or the negative electrode current collector is electrically connected to the negative electrode terminal with a second alloy. ### Claim 11 A battery comprising: a positive electrode terminal and a negative electrode terminal; a positive electrode layer and a negative electrode layer; a positive electrode current collector electrically connected to each of the positive electrode layer and the positive electrode terminal; a negative electrode current collector electrically connected to each of the negative electrode layer and the negative electrode terminal; a bipolar current collector positioned between the positive electrode current collector and the negative electrode current collector; a solid electrolyte layer positioned between the positive electrode current collector and the negative electrode current collector; and an insulating sealing member positioned between the positive electrode current collector and the negative electrode current collector and surrounding the solid electrolyte layer, wherein: the positive electrode current collector and the negative electrode terminal are electrically isolated from each other with a first gap, the negative electrode current collector and the positive electrode terminal are electrically isolated from each other with a second gap, the bipolar current collector is electrically isolated from each of the positive electrode terminal and the negative electrode terminal with a third gap, and the insulating sealing member fully fills the first, second and third gaps.