# US 11,993,176 B2 · Battery housing for battery module of a traction battery of a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,993,176 B2 - Document ID: US11993176B2 - Status: Granted - Kind: B2 - Application number: 17/381,523 - Filed: 2021-07-21 - Published: 2022-01-27 - Granted: 2024-05-28 - Earliest claimed: 2020-07-22 - Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Applicants: Dr. Ing. h.c. F. Porsche Aktiengesellschaft - Inventors: Philipp Kellner; Christopher Volkmer; Sascha Mostofi; Immanuel Vogel; Dieter Schiebel; Thomas Neuhauser - Web page: https://patentgrep.com/patent/US11993176B2 ## CPC - B60L 58/26: by cooling - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - H01M 10/60: Heating or cooling; Temperature control - H01M 10/613: Cooling or keeping cold - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - 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 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 90/16: Information or communication technologies improving the operation of electric vehicles - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A battery housing for a battery module of a traction battery of a motor vehicle has (i) a housing for enclosing at least one battery cell of the battery module, (ii) at least one cooling groove which is formed in at least one housing wall of the housing after which is open away from the battery cell and which serves for conducting a cooling fluid, and (iii) a cover which is configured as a planar plate and which is connected to the housing wall and which serves for closing the at least one cooling groove. Owing to the cooling groove formed in the housing wall, the cover can be configured as an inexpensive planar plate, such that cooling of a battery module is made possible with little outlay in terms of production. ## Claims ### Claim 1 A battery housing for a battery module of a traction battery of a motor vehicle, said battery housing comprising: a housing for enclosing at least one battery cell of the battery module, the housing having an extruded rectangular profile including a lower housing wall, an upper housing wall, and two side housing walls; at least one cooling groove formed in the upper housing wall, wherein the at least one cooling groove serves for conducting a cooling fluid, and the at least one cooling groove is open in a direction facing away from the battery cell; a cover in the form of a planar plate that is connected to the upper housing wall and which serves for closing the at least one cooling groove; and at least one housing inlet opening that is fluidly connected to the at least one cooling groove, the at least one housing inlet opening being disposed on an end side of the upper housing wall, and wherein the at least one housing inlet opening is disposed at an elevation below the cover. ### Claim 2 (depends on 1) The battery housing as claimed in claim 1, wherein the cover comprises (i) at least one cover inlet opening that is formed in the cover and communicates with the cooling groove and serves for the feed of the cooling fluid, and/or (ii) an outlet opening that communicates with the cooling groove and serves for the discharge of the cooling fluid. ### Claim 3 (depends on 1) The battery housing as claimed in claim 1, further comprising an outlet opening which serves for the discharge of the cooling fluid and is disposed on a top surface of the upper housing wall, and that is delimited by the cooling groove and by the cover, wherein the at least one housing inlet opening serves for the feed of the cooling fluid. ### Claim 4 (depends on 1) The battery housing as claimed in claim 1, wherein the housing is configured as an extruded rectangular tube, and wherein the at least one cooling groove is formed by compression forming and/or cutting. ### Claim 5 (depends on 1) The battery housing as claimed in claim 1, wherein the upper housing wall is configured for dissipating mechanical loads, wherein a material, which delimits the at least one cooling groove of the upper housing wall, contributes to stiffening of the upper housing wall. ### Claim 6 (depends on 1) The battery housing as claimed in claim 1, wherein the cooling groove has a shape configuration which deviates from a straight profile, and wherein the cooling groove runs in an angled and/or zigzag-shaped and/or meandering manner. ### Claim 7 A battery housing for a battery module of a traction battery of a motor vehicle, said battery housing comprising: a housing for enclosing at least one battery cell of the battery module, the housing having an extruded rectangular profile including a lower housing wall, an upper housing wall, and two side housing walls; at least one cooling groove and a centering body formed in the upper housing wall, wherein the at least one cooling groove serves for conducting a cooling fluid, and the at least one cooling groove is open in a direction facing away from the battery cell; and a cover in the form of a planar plate that is connected to the upper housing wall and which serves for closing the at least one cooling groove, wherein the cover has a centering opening that is configured to be mounted onto the centering body of the upper housing wall, and wherein the centering opening in the cover and the centering body in the upper housing wall define a relative position of the cover with respect to the upper housing wall, such that the cover does not require elevations which protrude out of a material plane of the cover. ### Claim 8 (depends on 1) The battery housing as claimed in claim 1, wherein the housing has at least two housing walls that are each equipped with at least one cooling groove. ### Claim 9 (depends on 1) A battery module for a traction battery of a motor vehicle, having at least one battery cell and having said battery housing as claimed in claim 1 for enclosing the at least one battery cell, wherein the battery cell lies directly, or exclusively only via a heat-conducting layer, against the upper housing wall equipped with the at least one cooling groove. ### Claim 10 (depends on 9) The battery module as claimed in claim 9, wherein the only active temperature control of the at least one battery cell is provided exclusively by way of the exchange of heat of the at least one battery cell with the cooling fluid that can be caused to flow in the at least one cooling groove. ### Claim 11 (depends on 1) The battery housing as claimed in claim 1, wherein the housing has at least four housing walls each equipped with more than one cooling groove. ### Claim 12 (depends on 3) The battery housing as claimed in claim 3, wherein the cooling fluid enters through the at least one housing inlet opening and exits through the outlet opening orthogonally with respect to an extrusion direction of the housing. ### Claim 13 (depends on 1) The battery housing as claimed in claim 1, further comprising a second cover provided on one of the bottom housing wall or one of the two side housing walls. ### Claim 14 (depends on 1) The battery housing as claimed in claim 1, wherein the housing comprises plastics material and the housing is configured as a rectangular profile with a partition extending in a longitudinal direction of the housing. ### Claim 15 (depends on 14) The battery housing as claimed in claim 14, wherein the partition divides the housing into multiple sub-chambers. ### Claim 16 (depends on 1) The battery housing as claimed in claim 1, wherein the cooling grooves are arranged between the upper housing wall and the cover. ### Claim 17 (depends on 3) The battery housing as claimed in claim 3, wherein the outlet opening is formed at an edge of the upper housing wall between the cooling groove and the cover. ### Claim 18 (depends on 1) The battery housing as claimed in claim 1, wherein the at least one housing inlet opening is disposed on the top surface of the upper housing wall at a location spaced away from an edge of the upper housing wall. ### Claim 19 (depends on 1) The battery housing as claimed in claim 1, wherein the at least one housing inlet opening is disposed on the top surface of the upper housing wall at an end side of the upper housing wall with respect to a longitudinal extent of the housing and away from the edge of the cover. ### Claim 20 (depends on 1) The battery housing as claimed in claim 1, wherein the at least one housing inlet opening is disposed on the top surface of the upper housing wall at an end side of the upper housing wall and wherein the at least one housing inlet opening is oriented transversely with respect to the longitudinal extent of the housing. ### Claim 21 (depends on 1) The battery housing as claimed in claim 1, wherein the cover comprises a plurality of cover inlet openings that communicate with the cooling groove and serves for the feed of the cooling fluid, and wherein a first group of the plurality of cover inlet openings are arranged along a first line parallel to an end side of the cover and transversely with respect to a longitudinal extent of the housing. ### Claim 22 (depends on 21) The battery housing as claimed in claim 21, wherein a second group of the plurality of cover inlet openings are arranged along a second line parallel to the end side of the cover and transversely with respect to the longitudinal extent of the housing, and wherein the first line is closer to the end side of the cover than the second line.