# US 12,763,396 B2 · Battery module and method for producing such a battery module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,396 B2 - Document ID: US12763396B2 - Status: Granted - Kind: B2 - Application number: 17/860,683 - Filed: 2022-07-08 - Published: 2023-01-19 - Granted: 2026-10-13 - Earliest claimed: 2021-07-13 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Markus Schmitt; Holger Knesch; Martin Kassner; Roman Marx - Web page: https://patentgrep.com/patent/US12763396B2 ## CPC - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/613: Cooling or keeping cold - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY ## Abstract The invention relates to a battery module having a plurality of prismatic battery cells (2, 20), which are arranged next to one another in a longitudinal direction (4) of the battery module (1) and furthermore are braced with one another, wherein the plurality of battery cells (2) are received in an interior (30) of a housing (3) of the battery module (1) and additionally a bottom surface (31) of the housing (3) of the battery module (1) and a bottom surface (21) of the battery cells (2) are respectively cohesively connected to one another, wherein a compressing element (11) is arranged between the housing (3) and the plurality of battery cells (2) in the longitudinal direction (4) of the battery module (1), which compressing element tapers perpendicularly to the longitudinal direction (4) of the battery module (1) in the direction of the bottom surface (31) of the housing (3). ## Claims ### Claim 1 A battery module having a plurality of prismatic battery cells (2, 2), which are arranged next to one another in a longitudinal direction (4) of the battery module (1) and furthermore are braced with one another, wherein the plurality of prismatic battery cells (2) are received in an interior (30) of a housing (3) of the battery module (1) and additionally a bottom surface (31) of the housing (3) of the battery module (1) and a bottom surface (21) of the plurality of prismatic battery cells (2) are respectively cohesively connected to one another, wherein a first compressing element (11) and a second compressing element (11) are each arranged between the housing (3) and a single end-most prismatic battery cell (2) of the plurality of prismatic battery cells (2) on a same longitudinal end of the battery module (1), wherein the first compressing element and the second compressing element each taper perpendicularly to a longitudinal direction (4) of the battery module (1) in a direction of the bottom surface (31) of the housing (3), and wherein the first and second compressing elements (11) are separated from one another to provide an air gap therebetween in a direction perpendicular to the longitudinal direction and therefore also creating an air gap between the housing (3) and the single end-most prismatic battery cell (2) adjacent the first and second compressing elements (11), the first and second compressing elements (11) further being independently insertable into the battery module such that the first and second compressing elements can be inserted into the housing (3) to different extents. ### Claim 2 (depends on 1) The battery module according to claim 1, wherein each of the first and second compressing elements (11) has two contact surfaces (111, 112) which are arranged at an angle (113) of at least four degrees with respect to one another. ### Claim 3 (depends on 1) The battery module according to claim 1, wherein each of the first and second the compressing elements (11) is received in a form-fitting manner in a respective receptacle (153) of the housing (3) of the battery module (1). ### Claim 4 (depends on 1) The battery module according to claim 1, wherein a supporting element (12) is arranged between the housing (3) of the battery module (1) and the plurality of prismatic battery cells (2) opposite the first and second compressing elements (11) in the longitudinal direction (4) of the battery module (1). ### Claim 5 (depends on 4) The battery module according to claim 4, wherein the supporting element (12) comprises an opening (123) and contact surfaces (121, 122). ### Claim 6 (depends on 1) The battery module according to claim 1, wherein the housing (3) comprises a temperature-control element (13) directly adjacent to the bottom surface (21) of the plurality of prismatic battery cells (2). ### Claim 7 (depends on 1) The battery module according to claim 1, wherein the plurality of prismatic battery cells (2) are arranged between two end plates (5) which are braced with one another by way of at least one clamping element (6). ### Claim 8 (depends on 7) The battery module according to claim 7, wherein an adhesive (8) is arranged between a side surface (23) of a battery cell (2) and the clamping element (6). ### Claim 9 (depends on 4) The battery module according to claim 4, wherein the supporting element (12) is connected in a form-fitting or cohesive manner to an end plate (5) or to the housing (3). ### Claim 10 (depends on 1) The battery module according to claim 1, wherein each of the first and second compressing elements (11) is formed from a polymeric material. ### Claim 11 (depends on 1) The battery module according to claim 1, wherein a respective spacer element (9) is arranged between two battery cells (2) arranged adjacent to one another. ### Claim 12 (depends on 1) A method for producing a battery module according to claim 1 wherein the plurality of prismatic battery cells (2) braced with one another are pushed in the direction of a supporting element (12) arranged between the housing (3) and the plurality of prismatic battery cells (2) and also opposite the first and second compressing elements (11) on the plurality of prismatic battery cells (2) until the supporting element (12) makes contact with the housing (3) and then the first and second compressing elements (11) are inserted until defined compression is formed. ### Claim 13 A battery module having a plurality of prismatic lithium-ion battery cells (200), which are arranged next to one another in a longitudinal direction (4) of the battery module (1) and furthermore are braced with one another, wherein the plurality of prismatic lithium-ion battery cells (2) are received in an interior (30) of a housing (3) of the battery module (1) and additionally a bottom surface (31) of the housing (3) of the battery module (1) and a bottom surface (21) of the plurality of prismatic lithium-ion battery cells (2) are respectively cohesively connected to one another by means of an adhesive, wherein a first compressing element (11) and a second compressing element (11) are each arranged between the housing (3) and a single end-most prismatic lithium-ion battery cell (2) of the plurality of prismatic lithium-ion battery cells (2) on a same longitudinal end of the battery module (1), wherein the first compressing element and the second compressing element each taper perpendicularly to a longitudinal direction (4) of the battery module (1) in a direction of the bottom surface (31) of the housing (3), and wherein the first and second compressing elements (11) are separated from one another to provide an air gap therebetween in a direction perpendicular to the longitudinal direction and therefore also creating an air gap between the housing (3) and the single end-most prismatic lithium-ion battery cell (2) adjacent the first and second compressing elements (11), the first and second compressing elements (11) further being independently insertable into the battery module such that the first and second compressing elements can be inserted into the housing (3) to different extents. ### Claim 14 (depends on 13) The battery module according to claim 13, wherein each of the first and second compressing elements (11) has two contact surfaces (111, 112) which are arranged at an angle (113) of at least four degrees with respect to one another. ### Claim 15 (depends on 13) The battery module according to claim 13, wherein each of the first and second compressing elements (11) is received in a form-fitting manner in a respective receptacle (153) of the housing (3) of the battery module (1), wherein each receptacle (153) forms an angle (154) of at least four degrees with respect to a vertical direction (41) of the battery module (1) arranged perpendicularly to the longitudinal direction (4). ### Claim 16 (depends on 13) The battery module according to claim 13, wherein a supporting element (12) is arranged between the housing (3) of the battery module (1) and the plurality of prismatic lithium-ion battery cells (2) opposite the first and second compressing elements (11) in the longitudinal direction (4) of the battery module (1). ### Claim 17 (depends on 16) The battery module according to claim 16, wherein the supporting element (12) comprises an opening (123) and contact surfaces (121, 122). ### Claim 18 (depends on 13) The battery module according to claim 13, wherein the housing (3) comprises a temperature-control element (13) which is directly adjacent to the bottom surface (21) of the plurality of prismatic lithium-ion battery cells (2), and which is configured as a temperature-control chamber through which temperature-control fluid can flow. ### Claim 19 (depends on 13) The battery module according to claim 13, wherein the plurality of prismatic lithium-ion battery cells (2) are arranged between two end plates (5) which are braced with one another by way of at least one clamping band (60), wherein the at least one clamping band (60) is cohesively connected to the two end plates (5) in a welded manner. ### Claim 20 (depends on 19) The battery module according to claim 19, wherein an adhesive (8) is arranged between a side surface (23) of the plurality of prismatic lithium-ion battery cells (2) and at least one clamping element (6), wherein the adhesive (8) furthermore has thermally conductive additives.