# US 12,119,507 B2 · Battery pack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,507 B2 - Document ID: US12119507B2 - Status: Granted - Kind: B2 - Application number: 17/106,297 - Filed: 2020-11-30 - Published: 2021-06-03 - Granted: 2024-10-15 - Earliest claimed: 2019-11-29 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: Nohyun Kwag - Web page: https://patentgrep.com/patent/US12119507B2 ## CPC - H01M 50/20: Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) - 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 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 10/613: Cooling or keeping cold - H01M 10/625: Vehicles - H01M 10/643: Cylindrical cells - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/6566: Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers (H01M10/6565 takes precedence) - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/227: Organic material - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames - H01M 50/278: Organic material - H01M 50/284: with incorporated circuit boards, e.g. printed circuit boards [PCB] - H01M 50/291: characterised by their shape - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/367: Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems - H01M 50/502: Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/507: comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules - H01M 50/509: characterised by the type of connection, e.g. mixed connections - H01M 50/514: Methods for interconnecting adjacent batteries or cells - H01M 50/516: by welding, soldering or brazing - H01M 50/519: comprising printed circuit boards [PCB] - H01M 50/528: Fixed electrical connections, i.e. not intended for disconnection - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - 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 A battery pack including battery cells; a potting resin on the battery cells at positions corresponding to central portions of upper end portions or lower end portions of the battery cells in a height direction of the battery cells; and an adhesive resin on the battery cells at positions corresponding to edge portions surrounding the central portions of the upper end portions or the lower end portions of the battery cells. ## Claims ### Claim 1 A battery pack, comprising: battery cells; a potting resin on the battery cells at positions corresponding to central portions of upper end portions or lower end portions of the battery cells in a height direction of the battery cells; an adhesive resin on the battery cells at positions corresponding to edge portions surrounding the central portions of the upper end portions or the lower end portions of the battery cells; bus bars that electrically connect two of the battery cells to each other, the bus bars being coupled to the central portions of the upper end portions or the lower end portions of the battery cells; and a circuit board on the bus bars, wherein: the potting resin covers coupling structures between the bus bars and the upper end portions or the lower end portions of the battery cells such that the potting resin is directly on a connection between the bus bars and the battery cells, the bus bars each include: coupling pieces at both ends thereof that are coupled to the upper end portions of the battery cells, the coupling pieces being flat and coplanar with one another, a protruding connection piece that connects the coupling pieces, the protruding connection piece being flat and in a plane parallel to a plane of the coupling pieces and being spaced apart from the coupling pieces in the height direction of the battery cells, and bent portions that extend at an inclined angle with respect to the planes of the coupling pieces and the protruding connection pieces and that connect the coupling pieces with the protruding connection piece at a center of the bus bar in a bent shape and space the protruding connection piece apart from the battery cells in the height direction of the battery cells, and the circuit board includes escape holes that each accommodate the protruding connection piece such that the plane of the protruding connection piece is at a level between a lower side of the circuit board and an upper side of the circuit board in the height direction. ### Claim 2 (depends on 1) The battery pack as claimed in claim 1, wherein: the circuit board further includes filling holes that expose the coupling pieces at both ends of the bus bars, and the potting resin is filled in the filling holes of the circuit board. ### Claim 3 (depends on 2) The battery pack as claimed in claim 2, further comprising a cell holder in which the battery cells are accommodated, the cell holder having terminal holes that expose the upper end portions of the battery cells, wherein the terminal holes of the cell holder and the filling holes of the circuit board are aligned with each other in the height direction of the battery cells. ### Claim 4 (depends on 1) The battery pack as claimed in claim 1, further comprising connection members coupled to the edge portions of the upper end portions of the battery cells. ### Claim 5 (depends on 4) The battery pack as claimed in claim 4, further comprising a circuit board electrically connected to the battery cells and on the battery cells, wherein the connection members pass through connection holes of the circuit board and electrically connect the battery cells with the circuit board. ### Claim 6 (depends on 5) The battery pack as claimed in claim 5, wherein: one end of each connection member forms a junction with an edge portion of the upper end portion of a corresponding battery cell, another end of the connection member forms a junction with the circuit board, and the adhesive resin covers the junctions of the one end and the other end of each connection member. ### Claim 7 (depends on 6) The battery pack as claimed in claim 6, wherein the adhesive resin continuously covers the junctions of the one end and the other end of each connection member. ### Claim 8 (depends on 7) The battery pack as claimed in claim 7, wherein the adhesive resin entirely covers each connection member. ### Claim 9 (depends on 5) The battery pack as claimed in claim 5, wherein the connection members include conductive wires or conductive ribbons. ### Claim 10 (depends on 5) The battery pack as claimed in claim 5, wherein the connection holes of the circuit board expose the edge portions of the upper end portions of the battery cells. ### Claim 11 (depends on 10) The battery pack as claimed in claim 10, wherein the adhesive resin covers the edge portions of the upper end portions of the battery cells exposed by the connection holes. ### Claim 12 (depends on 11) The battery pack as claimed in claim 11, further comprising a cell holder including hollow protrusions that are connected to cooling flow paths around each battery cell covered by the adhesive resin and that pass through the circuit board. ### Claim 13 (depends on 12) The battery pack as claimed in claim 12, wherein the connection holes expose the hollow protrusions and the edge portions of the upper end portions of the battery cells. ### Claim 14 (depends on 5) The battery pack as claimed in claim 5, wherein: the connection holes expose the edge portions of the upper end portions of two of the battery cells adjacent to each other, two connection members are bonded to the edge portions of the upper end portions of the two adjacent battery cells, respectively, and the adhesive resin covers the junctions formed at one end and the other end of each of the connection members. ### Claim 15 (depends on 14) The battery pack as claimed in claim 14, wherein the adhesive resin entirely covers the two connection members, and continuously covers the edge portions of the upper end portions of the two adjacent battery cells exposed by the connection hole. ### Claim 16 (depends on 1) The battery pack as claimed in claim 1, wherein the potting resin and the adhesive resin include different components. ### Claim 17 (depends on 1) The battery pack as claimed in claim 1, wherein the adhesive resin includes a two-component curable resin. ### Claim 18 (depends on 1) The battery pack as claimed in claim 1, wherein: the upper end portions of the battery cells include a first material, a coupling piece of the bus bars includes a second material, and the first material is different from the second material such that the potting resin protects the first material and the second material from galvanic corrosion.