Battery cooling device for an electrical battery module of an electric drive

Patent metadata

Field	Value
Publication number	US-2025055054-A1
Application number	US-202218688375-A
Country	US
Kind code	A1
Filing date	Sep 2, 2022
Priority date	Sep 3, 2021
Publication date	Feb 13, 2025
Grant date	—

Abstract

A battery cooling device for an electric battery module of an electric drive on an electric vehicle forms a substantially closed flow chamber for circulating a temperature control fluid. A plurality of flow elements are arranged in the flow chamber, which influence a flow of the temperature control fluid through the flow chamber.

First claim

1 .- 15 . (canceled)

16 . A battery cooling device for an electric battery module of an electric drive on an electric vehicle, comprising:
an outwardly closed flow chamber for circulating a temperature control fluid, wherein the flow chamber is formed between two plates connected to one another in regions by roll bonding, wherein the plates are connected in bonded regions and are inflated in unconnected hollow regions to form the flow chamber, wherein the flow elements are formed by the bonded regions, wherein a plurality of flow elements are arranged in the flow chamber, which influence a flow of the temperature control fluid through the flow chamber, wherein at least some of the flow elements are elongated webs with at least one head portion, with flow taking place around all sides of the elongated webs, wherein a length of the web in the longitudinal direction is greater than a width transverse to the longitudinal direction, wherein the head portion has an increased width transverse to the longitudinal direction which is greater than the smallest width of the web.

17 . The battery cooling device of claim 16 , wherein the increased width is greater by a factor of at least 1.05 than the smallest width of the web.

18 . The battery cooling device of claim 16 , wherein the head portion has one or more curves, a minimum radius of the curves being greater by a factor of at least 1.3 than a maximum distance between the plates in the hollow region surrounding the head portion.

19 . The battery cooling device of claim 16 , wherein a share of the flow elements are separating webs around which flow takes place on three sides, the flow chamber having at least two compartments separated from one another by one of the separating webs.

20 . The battery cooling device of claim 19 , wherein the two compartments form a supply and a return for the temperature control fluid.

21 . The battery cooling device of claim 19 , wherein the separating web has apertures connecting the compartments, the apertures along the separating web having a total length of less than five percent of a total length of the separating web.

22 . The battery cooling device of claim 16 , wherein a share of the flow elements are fastening regions for connecting the battery cooling device to a battery housing or to the vehicle, around which fastening regions flow takes place on all sides.

23 . The battery cooling device of claim 16 , wherein the battery cooling device has a tray shape, the flow chamber extending over a bottom portion and at least one wall portion connected to the bottom portion of the tray shape.

24 . The battery cooling device of claim 16 , wherein the flow chamber is formed by inflated hollow regions in a first plate of the two plates, a second plate of the two plates having at least one contact surface for battery modules, the contact surface having a flatness of less than 1 mm.

25 . The battery cooling device of claim 24 , wherein the second plate has inflated hollow regions outside the contact surface.

26 . The battery cooling device of claim 16 , wherein the battery cooling device has at least one embossing, the embossing being made before or after the inflation of the flow chamber.

27 . The battery cooling device of claim 16 , wherein the flow chamber has at least one channel in which the hollow region extends to an edge of the battery cooling device, a parallel fluid connection being connected to the channel.

28 . The battery cooling device of claim 16 , wherein one of the plates has at least one opening, wherein an angled fluid connection is connected to the flow chamber via the opening.

29 . Battery cooling device for an electric battery module of an electric drive on an electric vehicle, comprising:
an outwardly closed fluid channel for circulating a temperature control fluid, wherein the fluid channel is formed between two plates connected in regions by roll bonding, wherein the plates are connected in bonded regions in a material-locking manner and are inflated in unconnected hollow regions to form the fluid channel, wherein the battery cooling device is tray-shaped with a substantially flat bottom portion and wall portions and wherein the cooling channel extends from the bottom portion into at least one of the wall portions.

30 . Battery cooling device for an electric battery module of an electric drive on an electric vehicle,
wherein the battery cooling device has an outwardly closed flow chamber for circulating a temperature control fluid, wherein the flow chamber is formed between two plates connected to one another in regions by roll bonding, wherein the plates are connected in bonded regions and are inflated in unconnected hollow regions to form the flow chamber, wherein the flow elements are formed by the bonded regions, wherein a plurality of flow elements are arranged in the flow chamber, which influence a flow of the temperature control fluid through the flow chamber, wherein at least a share of the flow elements are elongated webs with at least one head portion, with flow taking place around all sides of the elongated webs, wherein a length of the web in the longitudinal direction is greater than its width transverse to the longitudinal direction, wherein the head portion has an increased width transverse to the longitudinal direction which is greater than the smallest width of the web, wherein the head portion has one or more curves, a minimum radius of the curves being greater by a factor of at least 1.3 than a maximum distance between the plates in the hollow region surrounding the head portion.

31 . The battery cooling device of claim 30 , wherein the increased width is greater by a factor of at least 1.05 than the smallest width of the web.

32 . The battery cooling device of claim 30 , wherein the battery cooling device has a tray shape, the flow chamber extending over a bottom portion and at least one wall portion connected to the bottom portion of the tray shape.

33 . The battery cooling device of claim 30 , wherein the battery cooling device has at least one embossing, the embossing being made before or after the inflation of the flow chamber.

34 . The battery cooling device of claim 30 , wherein the flow chamber has at least one channel in which the hollow region extends to an edge of the battery cooling device, a parallel fluid connection being connected to the channel.

Assignees

• Muhr & Bender Kg

Inventors

• Muhr Thomas
• Elend Lutz-Eike
• Scholemann Björn
• Özcan Bünyamin
• Begemann Christian
• De Luca Fabian
• Danger Elisabeth

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/6556

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M10/625 Primary

  Vehicles · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/613 Primary

  Cooling or keeping cold · CPC title