# US 2014/0154559 A1 · Energy Storage Unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154559 A1 - Document ID: US20140154559A1 - Status: Published application - Kind: A1 - Application number: 14/094,202 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: GS Yuasa International Ltd. - Applicants: GS Yuasa International Ltd. - Inventors: Sumio Mori; Tomonori Kako; Akihiko Miyazaki; Kenta Nakai - Web page: https://patentgrep.com/patent/US20140154559A1 ## CPC - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/55: on the same side of the cell - H01M 50/51: Connection only in series - H01M 50/516: by welding, soldering or brazing - H01M 50/522: Inorganic material - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - 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 ## Abstract An energy storage unit having plural energy storage devices, each of which includes a container housing an electrode assembly and positive and negative electrode terminals electrically connected to the electrode assembly and extending from the container in the same direction, includes: a bus bar electrically connecting a first terminal, which is one of the positive electrode terminal and the negative electrode terminal of a first energy storage device included in the plural energy storage devices, and a second terminal, which is one of the positive electrode terminal and the negative electrode terminal of a second energy storage device included in the plural energy storage devices and opposite in polarity to the first terminal; a packing member interposed between the first terminal and the container of the first energy storage device; and an insulating member interposed between the bus bar and the container of the first energy storage device. ## Claims ### Claim 1 An energy storage unit including a plurality of energy storage devices, each of which includes (i) a container which houses an electrode assembly and (ii) a positive electrode terminal and a negative electrode terminal which are electrically connected to the electrode assembly and extend from the container in a same direction, the energy storage unit comprising: a bus bar which electrically connects a first terminal and a second terminal, the first terminal being one of the positive electrode terminal and the negative electrode terminal of a first energy storage device included in the plurality of energy storage devices, the second terminal being one of the positive electrode terminal and the negative electrode terminal of a second energy storage device included in the plurality of energy storage devices and opposite in polarity to the first terminal; a first insulating member interposed between the first terminal and the container of the first energy storage device; and a second insulating member interposed between the bus bar and the container of the first energy storage device. ### Claim 2 (depends on 1) The energy storage unit according to claim 1, wherein when viewing the first energy storage device from a side on which the bus bar is provided, the second insulating member covers at least an area in which the bus bar and a surface of the container of the first energy storage device from which the first terminal extends overlap. ### Claim 3 (depends on 1) The energy storage unit according to claim 1, wherein the second insulating member is provided with two holes and is interposed between (i) the bus bar and (ii) the container of the first energy storage device and the container of the second energy storage device, and the bus bar is electrically connected to the first terminal and the second terminal through the two holes provided in the second insulating member. ### Claim 4 (depends on 1) The energy storage unit according to claim 1, wherein the second insulating member is provided with two holes, the first terminal is electrically connected to the bus bar through a first of the two holes, and one of the positive electrode terminal and the negative electrode terminal of the first energy storage device that is opposite in polarity to the first terminal is electrically connected to a different bus bar through a second of the two holes. ### Claim 5 (depends on 1) The energy storage unit according to claim 1, wherein the second insulating member includes, layered in a thickness direction, a resin layer including a resin and a ceramic layer including a ceramic. ### Claim 6 (depends on 1) The energy storage unit according to claim 1, wherein the first insulating member and the second insulating member are integrated as a single member. ### Claim 7 An energy storage unit including a plurality of energy storage devices, each of which includes (i) a container which houses an electrode assembly and (ii) a positive electrode terminal and a negative electrode terminal which are electrically connected to the electrode assembly and extend from the container in a same direction, the energy storage unit comprising: a bus bar which electrically connects a first terminal and a second terminal, the first terminal being one of the positive electrode terminal and the negative electrode terminal of a first energy storage device included in the plurality of energy storage devices, the second terminal being one of the positive electrode terminal and the negative electrode terminal of a second energy storage device included in the plurality of energy storage devices and opposite in polarity to the first terminal; and an insulating member for electrically insulating the bus bar from the container of the first energy storage device, the container of the first energy storage device being electrically insulated from the first terminal.