# US 12,763,397 B2 · Battery pack and manufacturing method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,397 B2 - Document ID: US12763397B2 - Status: Granted - Kind: B2 - Application number: 18/026,266 - Filed: 2021-10-21 - Published: 2023-11-16 - Granted: 2026-10-13 - Earliest claimed: 2020-10-22 - Assignees: LG Energy Solution, Ltd. - Applicants: LG Energy Solution, Ltd. - Inventors: Jin Oh Yang; Hae Won Choi - Web page: https://patentgrep.com/patent/US12763397B2 ## CPC - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/613: Cooling or keeping cold - H01M 10/643: Cylindrical cells - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/6567: Liquids - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/264: for cells or batteries, e.g. straps, tie rods or peripheral frames - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY ## Abstract A battery pack includes a frame having an inner space and an opened side; a plurality of battery cells each having one end disposed in the inner space of the frame and the other end protruding to the outside of one side of the frame; a filling material filled in the inner space of the frame; a heat sink disposed to face one side of the frame and configured to cool the battery cells; and a plurality of cell holders having a plurality of insertion holes to which the other ends of the battery cells are respectively inserted and stacked to each other between the frame and the heat sink. A volume of the inner space of the frame and an amount of the filling material filled in the inner space of the frame are adjusted according to the stacked number of the cell holders. ## Claims ### Claim 1 A battery pack, comprising: a frame having an inner space, an upper surface, and an opened lower side; a plurality of battery cells each having a first end disposed in or at the inner space of the frame and a second end protruding to an outside of one side of the frame; a filling material filled in the inner space of the frame; a heat sink disposed to face one side of the frame and configured to cool the plurality of battery cells; and a plurality of cell holders located at the second ends of the plurality of battery cells, wherein each of the plurality of cell holders has a respective plurality of insertion holes to which the second ends of the plurality of battery cells are respectively inserted, wherein the plurality of cell holders are stacked to each other in a vertical direction between the frame and the heat sink, wherein each of the plurality of cell holders has a same size in a plane perpendicular to the vertical direction, wherein a volume of the inner space of the frame and an amount of the filling material filled in the inner space of the frame are adjusted according to a stacked number of the plurality of cell holders, and wherein lowermost surfaces of the plurality of battery cells are positioned below the frame, the heat sink is disposed below the lowermost surfaces of the plurality of battery cells, the heat sink comprises a cooling member having a plate shape, and an upper surface of the cooling member directly or indirectly contacts the lowermost surfaces of the plurality of battery cells. ### Claim 2 (depends on 1) The battery pack of claim 1, wherein the plurality of cell holders support a circumference of the second ends of the plurality of battery cells, and wherein the filling material is not filled in a space in which the plurality of cell holders are disposed and support the first ends except for the second ends of the plurality of battery cells. ### Claim 3 (depends on 1) The battery pack of claim 1, wherein one of the plurality of cell holders has a plate shape to cover a cross-section of the inner space of the frame, and a circumference of the one of the plurality of cell holders contacts one side end of the frame. ### Claim 4 (depends on 3) The battery pack of claim 3, wherein the one of the plurality of cell holders comprises a plurality of fixing plates that are detachably connected on a plane in correspondence to an arrangement structure of the plurality of battery cells, and wherein the respective plurality of insertion holes of the one of the plurality of cell holders are defined in the plurality of fixing plates. ### Claim 5 (depends on 4) The battery pack of claim 4, wherein at least a portion of the plurality of fixing plates has a different number of the respective plurality of insertion holes. ### Claim 6 (depends on 3) The battery pack of claim 3, wherein a total thickness of the stacked plurality of cell holders is between 20% and 60% of a length of one of the plurality of battery cells. ### Claim 7 (depends on 3) The battery pack of claim 3, wherein a projection is on one of the frame and the plurality of cell holders that is closest to the frame, and wherein a coupling groove into which the projection is inserted is on the other thereof. ### Claim 8 (depends on 1) The battery pack of claim 1, wherein a material of each of the plurality of cell holders comprises plastic, and a material of the filling material comprises silicon. ### Claim 9 (depends on 1) The battery pack of claim 1, wherein the plurality of cell holders are immediately adjacent to each other. ### Claim 10 (depends on 1) The battery pack of claim 1, wherein the frame has an uppermost surface, and the filling material is in contact with the uppermost surface. ### Claim 11 (depends on 1) The battery pack of claim 1, wherein the battery pack further comprises busbars positioned above the upper surface of the frame, wherein the first ends of the plurality of battery cells comprise terminals, and wherein the terminals are electrically connected to the busbars. ### Claim 12 (depends on 1) The battery pack of claim 1, wherein the second ends of the plurality of battery cells are positioned lower than the first ends of the plurality of battery cells, wherein the second ends of the plurality of battery cells comprise the lowermost surfaces of the plurality of battery cells, and wherein the frame further has a side opening located between the upper surface of the frame and the opened lower side of the frame. ### Claim 13 A method for manufacturing a battery pack having a plurality of battery cells, the method comprising: storing first ends of each of the plurality of battery cells in or at an inner space of a frame; stacking a plurality of cell holders at one side of the frame and respectively inserting second ends of the plurality of battery cells that protrude to an outside of the frame to a respective plurality of insertion holes formed in each of the plurality of cell holders; and injecting a filling material into the inner space of the frame to support a circumference of each of the first ends such that the second ends of the plurality of battery cells are not in contact with the filling material, wherein the plurality of cell holders are located at the second ends of the plurality of battery cells, wherein the plurality of cell holders are stacked to each other in a vertical direction, wherein each of the plurality of cell holders has a same size in a plane perpendicular to the vertical direction, wherein the stacking of the plurality of cell holders comprises setting a stacked number of the plurality of cell holders to adjust a volume of the inner space of the frame and an amount of the filling material filled in the inner space of the frame, wherein the frame has an upper surface and an opened lower side, and wherein lowermost surfaces of the plurality of battery cells are positioned below the frame, a heat sink is disposed below the lowermost surfaces of the plurality of battery cells, the heat sink comprises a cooling member having a plate shape, and an upper surface of the cooling member directly or indirectly contacts the lowermost surfaces of the plurality of battery cells. ### Claim 14 (depends on 13) The method of claim 13, wherein the setting of the stacked number of the plurality of cell holders comprises adjusting a total thickness of the stacked plurality of cell holders in a range from 20% to 60% of a length of one of the plurality of battery cells.