CN113875071A - Cooling plate for a battery of a motor vehicle and battery for a motor vehicle having a cooling plate - Google Patents
Cooling plate for a battery of a motor vehicle and battery for a motor vehicle having a cooling plate Download PDFInfo
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- CN113875071A CN113875071A CN202080033071.5A CN202080033071A CN113875071A CN 113875071 A CN113875071 A CN 113875071A CN 202080033071 A CN202080033071 A CN 202080033071A CN 113875071 A CN113875071 A CN 113875071A
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- hollow profile
- cooling plate
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- 238000001816 cooling Methods 0.000 title claims abstract description 97
- 239000002826 coolant Substances 0.000 claims abstract description 41
- 230000007423 decrease Effects 0.000 claims abstract 2
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 13
- 239000000463 material Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a cooling plate (14) for a battery (10) of a motor vehicle, comprising a hollow profile (20) through which a cooling medium can flow, the height of which relative to the original shape can be increased by the application of an internal pressure and can be reduced by the application of an external pressure; wherein the hollow profile (20) has at least one strain bar (34) which connects an upper hollow profile inner side (36) to a lower hollow profile inner side (38), wherein the strain bar (34) has a cross section which does not connect the upper hollow profile inner side (36) to the lower hollow profile inner side (38) on the shortest path when the hollow profile has its original shape and is stretched when the height of the hollow profile (20) increases and is upset when the height of the hollow profile (20) decreases. The invention further relates to a battery (10) for a motor vehicle having such a cooling plate (14).
Description
Technical Field
The invention relates to a cooling plate for a battery of a motor vehicle and to a battery for a motor vehicle having such a cooling plate.
Background
It is known per se to provide cooling plates for cooling the battery, through which a cooling medium can flow. For example, such cooling plates are arranged between the individual battery modules, so that, in particular, excess heat generated in the respective battery cells of the battery modules can be dissipated.
Such cooling plates and battery modules usually have a planar surface only within certain limits. In practice, hard surfaces without high finishing expenditure are never completely flat, but have, for example, elevations, depressions, indentations, etc. In order to be able to transfer heat well, it is advantageous to achieve as large an area of contact as possible between such a cooling plate and the battery module without an air lock.
If the battery module is placed or positioned on the cooling plate, there is usually no completely planar contact, but rather a point-like or linear contact. Therefore, there is always a certain gap between the cooling plate and the battery module. Due to tolerances, considerable component-, shape-and/or positional tolerances may occur between the cooling plate and the battery module. It is also entirely possible here that gap sizes of up to 0.7mm or even more have to be overcome.
In order to achieve the best possible thermal connection between the cooling plate and the battery module, it is common to use so-called gap filler materials. The present invention relates to a heat-conducting material that can fill gaps or air locks between a cooling plate and a battery module. Such a filler material, while not optimally conducting heat, conducts much better than air. The thinner such a filler material can be coated, the better the thermal connection between the cooling plate and the battery module is generally. Furthermore, it is desirable to consume as little of this relatively expensive interstitial material as possible for cost savings.
Disclosure of Invention
The object of the present invention is therefore to provide a solution by means of which a particularly good thermal connection between a cooling plate of a battery and at least one battery module can be achieved in a particularly simple and reliable manner.
This object is achieved by a cooling plate for a battery of a motor vehicle and a battery having such a cooling plate having the features of the independent claims. Further possible embodiments of the invention are specified in particular in the dependent claims.
The inventive cooling plate for a battery of a motor vehicle comprises a hollow profile through which a cooling medium can flow, the height of which can be increased relative to the original shape by the application of an internal pressure and can be reduced by the application of an external pressure. The hollow profile is deformed in this case elastically or also plastically as a function of the material and/or temperature properties of the hollow profile or as a function of additional structural elements of the hollow profile. The hollow profile can be, in particular, a thin-walled hollow profile, for example, with a wall thickness of approximately 0.4 mm. The thin-walled hollow profile can be made of aluminum, for example, wherein the hollow profile can be an extruded profile, for example. As cooling medium, for example, a mixture of water and glycol can be used, which can flow through the hollow profile and thus absorb excess heat from the battery cells and the battery modules and carry it away.
The hollow profile has at least one strain bar connecting an upper hollow profile inner side to a lower hollow profile inner side, wherein the strain bar has a cross section which does not connect the upper hollow profile inner side to the lower hollow profile inner side in the shortest path when the hollow profile has its original shape, wherein the cross section of the strain bar is stretched when the height of the hollow profile is increased and is upset when the height of the hollow profile is reduced. The cross section of the strain webs therefore does not run straight from bottom to top in the vertical direction of the hollow profile or cooling plate, in order to connect the two inner hollow profile surfaces to one another. The "original shape of the hollow profile" means in particular the shape which the hollow profile has after its manufacture. The term "original shape of the hollow profile" also means in particular the shape or outer shape of the hollow profile when no pressure is applied to the hollow profile from the inside or from the outside.
The cross section of the strain gauge does not connect the upper hollow profile inner side to the lower hollow profile inner side in the shortest path, as a result of which the hollow profile can be deformed particularly easily for enlarging or also reducing its height relative to its original shape. The internal pressure mentioned for increasing the height of the hollow profile can be applied, for example, by means of a cooling medium by: the cooling medium is introduced into the hollow profile at an elevated pressure. The hollow profile can thereby be expanded by an internal high-pressure modification, whereby the height of the hollow profile can be changed. It is also possible to apply pressure to the hollow profile from the outside, for example from the upper side and from the lower side, as a result of which the height of the hollow profile can be reduced.
The at least one strain gauge contributes to the hollow profile being supported thereby on the one hand reliably on the inner side and on the other hand still being able to be deformed quite easily, both when the height of the hollow profile is increased and when the height of the hollow profile is reduced. The strain gauge, which in the original shape has in particular an upset contour, is stretched in particular in the vertical direction of the hollow profile when the height of the hollow profile is enlarged. In this case, the shape of the cross section of the hollow profile changes. If the height of the hollow profile is reduced, the cross section of the strain gauge is upset, in particular, as viewed in the vertical direction of the hollow profile.
Thus, by providing the at least one strain gauge, the height of the hollow profile can be varied, in particular by the application of forces from the inside and from the outside or by the application of pressure. It is therefore possible to initially adapt the height of the hollow profile to the installation situation or tolerance situation inside the battery of the motor vehicle.
If, for example, component-, shape-and/or positional tolerances of the hollow profile and/or of the associated battery module lead to considerable gaps between the hollow profile and the battery module, the hollow profile can be inflated from the inside to a certain extent in order to enlarge the height of the hollow profile. This enables the gap between the hollow profile and the battery module side to be significantly reduced. The reverse procedure can also be followed if the actual situation requires that the height of the hollow profile should not be too great. In this case, the hollow profile is first easily upset in the vertical direction. For example, with the cooling plate according to the invention, the height of the hollow profile can be increased by 0.4mm by applying an internal pressure of 1 bar. If, for example, without this measure, the gap between the hollow profile and the cell module side is 0.7mm high, this gap is only 0.3mm high after the hollow profile has been expanded. The necessary use of interstitial material is correspondingly less. This saves costs on the one hand and enables an improved thermal connection between the hollow profile of the cooling plate and the respective battery module side on the other hand.
A possible embodiment of the invention provides that an upper connecting region, at which the strain gauge is connected to the upper hollow profile inner side, and a lower connecting region, at which the strain gauge is connected to the lower hollow profile inner side, are arranged opposite one another. Since these connection regions or connection points are arranged at the same position in relation to the transverse direction of the hollow profile, the upper and lower sides of the hollow profile can be prevented from sliding off or moving in relation to each other in relation to the transverse direction of the hollow profile when the hollow profile is expanded and also when the hollow profile is upset.
Another possible embodiment of the invention provides that the cross section of the strain gauge has at least one substantially s-shaped section. For example, the cross section can run zigzag-like from the upper hollow profile inner side to the lower hollow profile inner side. This saw tooth shape has at least one simple s-shape. Within a plane spanned by the vertical direction and the transverse direction, for example, two sections of the cross section can run diagonally, with one section lying between them being able to run, for example, in the transverse direction. If the hollow profile is expanded, the diagonal sections are set up more steeply and a controlled expansion of the hollow profile is achieved in this way. It is also possible for the cross section of the strain gauge to have a plurality of s-shaped sections following one another. In other words, the cross section of the strain gauge can thus have a plurality of sections juxtaposed to one another in a zigzag manner. This shaping of the cross section is particularly advantageous for the expansion of the hollow profile in the vertical direction. At the same time, a good supporting effect of the hollow profile can be ensured internally by this shape of the cross section.
According to a further possible embodiment of the invention, it is provided that the strain bars extend parallel to the longitudinal direction of the cooling plate, in particular over the entire length of the hollow profile. Thus, the hollow profile can be divided into two chambers if only a single strain gauge is provided.
In a further possible embodiment of the invention, it is provided that the cooling plate has a plurality of strain webs arranged parallel to one another. In this way, a particularly uniform expansion and upsetting of the hollow profile in the vertical direction can be ensured. Furthermore, the plurality of strain bars serves to support the hollow profile in a relatively stable manner on the inner side. Furthermore, the strain webs serve to heat the heat dissipated from the battery module not only on the outside against the cooling plate, in particular the hollow profile. By means of the strain webs, heat can be conducted into the interior of the hollow profile through which a cooling medium can flow.
A further possible embodiment of the invention provides that the hollow profile has at least one spacer which is arranged on one of the inner sides of the hollow profile and is spaced apart from the other inner side of the hollow profile. This division bar is therefore not continuous in relation to the vertical direction of the hollow profile. The spacers serve in particular to heat the hollow profile not only in the outer region, but also to transfer heat to the interior of the hollow profile when the hollow profile is arranged on a battery module. As a result, particularly good heat transfer can take place from the battery module concerned via the hollow profile to the cooling medium flowing through the hollow profile. The at least one spacer bar does not connect the inner sides of the hollow profiles to one another, so that the spacer bar does not prevent the hollow profiles from expanding or upsetting in the vertical direction.
According to another possible embodiment of the invention, it is provided that the cross section of the spacers extends parallel to the vertical direction of the cooling plates. In other words, the webs thus run straight in relation to the vertical direction of the cooling plate or hollow profile. However, other shapes, such as zigzag shapes, etc., are likewise possible, as long as the spacers do not connect the inner sides of the hollow profiles to one another. The non-straight shape of the cross section can in particular contribute to the surface enlargement of the division bar, which can have a positive effect on the thermodynamic properties of the hollow profile.
Another possible embodiment of the invention provides that the division bars extend parallel to the longitudinal direction of the cooling plate, in particular over the entire length of the hollow profile. This allows a particularly uniform heat input from the battery to the cooling medium flowing through the hollow profile via the parting beads.
In a further possible embodiment of the invention, provision is made for a plurality of spacers to be arranged between two strain gages with respect to the transverse direction of the cooling plate. The strain webs thus divide the hollow profile into corresponding chambers which are separated from one another, a plurality of division bars being arranged in the interior of these chambers. As a result, the cooling medium flowing through the respective chambers can absorb heat particularly uniformly from the associated battery module.
In a further possible embodiment of the invention, it is provided that the division bars are arranged alternately on the inner side of the upper hollow profile and on the inner side of the lower hollow profile. This is advantageous, in particular if the respective battery modules are arranged on the upper and lower side of the hollow profile, in order to be able to transfer heat particularly uniformly not only from the upper battery module but also from the lower battery module to the cooling medium inside the hollow profile.
Another possible embodiment of the invention provides that, when the hollow profile has its original shape, the opposite longitudinal sides of the hollow profile do not connect the upper hollow profile side and the lower hollow profile side to each other in each case on the shortest path. For example, the longitudinal sides of the hollow profile can have an arcuate cross section or at least one at least substantially s-shaped section. In other words, the respective cross section of the longitudinal sides of the hollow profile can thus be designed as an arc or, for example, also as an s-shape. For example, it is possible for the longitudinal sides of the hollow profile to have the same shape as the strain gauge strips with respect to their cross section. This can facilitate the expansion and upsetting of the hollow profile in the vertical direction.
According to a further possible embodiment of the invention, it is provided that the respective open end side of the hollow profile is closed by a respective end section of the cooling plate, wherein at least one of the end sections has a connection for conveying and/or discharging a cooling medium. Depending on how the connection for feeding and discharging the cooling medium is arranged, the end section can also be used to effect a diversion of the cooling medium from one chamber of the hollow profile to another chamber of the hollow profile.
The battery according to the invention for a motor vehicle comprises at least one cooling plate according to the invention or at least one possible embodiment of the cooling plate according to the invention, wherein the cooling plate is arranged on the battery module side of the battery module of the battery. For example, it is also possible to arrange cooling plates between a pair of battery modules in each case. In particular, the gap size between the cooling plate and the respective battery module side can be reduced by the possibility of expansion of the cooling plate in the vertical direction.
Finally, a possible embodiment of the battery provides that a mat of a thermally conductive material is arranged on the side of the hollow profile of the cooling plate facing the battery module. In other words, it is possible to glue or otherwise arrange a filler mat on the side of the hollow profile assigned to the battery module side. Handling of such a caulk pad is much easier and does not require a metering system for applying caulk.
Further possible advantages, features and details of the invention emerge from the following description of possible embodiments and with the aid of the drawings. The features and feature combinations mentioned above in the description and those shown in the following description of the figures and/or in the drawings alone can be used not only in the respectively specified combination but also in other combinations or alone without leaving the scope of the invention.
Drawings
The drawings show the following:
fig. 1 shows a perspective view of a battery for a motor vehicle having a plurality of battery modules, wherein cooling plates are arranged between the battery modules;
FIG. 2 shows a top view of the battery;
FIG. 3 shows a cross-sectional view of the battery along section A-A identified in FIG. 2;
FIG. 4 shows a perspective view of a first embodiment of the cooling plate;
FIG. 5 shows a perspective view of a second embodiment of the cooling plate;
FIG. 6 shows a perspective view of a third embodiment of the cooling plate;
FIG. 7 shows a perspective view of a first embodiment for an end section of the cooling plate;
FIG. 8 shows a perspective view of a second embodiment for an end section of the cooling plate;
FIG. 9 shows a perspective view of another embodiment of an end section of the cooling plate;
FIG. 10 shows a perspective view of a hollow profile of the cooling plate, which can be flowed through with a cooling medium;
fig. 11 shows a perspective detailed view of the hollow profile;
fig. 12 shows a front view of the hollow profile.
Identical or functionally identical elements are provided with the same reference symbols in the figures.
Detailed Description
A battery 10 for a motor vehicle is shown in perspective view in fig. 1. The battery 10 includes a plurality of battery modules 12 stacked one on top of the other in the present illustration. Between the upper two battery modules 12 and between the lower two battery modules 12, in each case, a cooling plate 14 is arranged, which can be traversed by a cooling medium for removing excess heat, in particular from battery cells, not shown here, of the battery modules 12. The cooling plate 14 can also be used, for example, to heat the battery module 12, in particular the battery cells contained therein, to a favorable operating temperature when the ambient temperature is cold. The cooling medium can be supplied to the cooling plate 14 through the inlet 16. The heated cooling medium can be discharged through the outflow opening 18.
The battery 10 is shown in a top view in fig. 2. This view is used in particular to identify section a-a.
The cell 10 is shown in fig. 3 in a cross-sectional view along section a-a identified in fig. 2. Here, it can also be seen clearly again how the cooling plates 14 are arranged between the respective battery modules 12. In order to ensure particularly good heat transfer from the battery modules 12 to the cooling medium in the cooling plate 14, it is desirable to connect the battery modules 12 to the cooling plate 14 as flat as possible, without air locks in particular being present. For this purpose, so-called gap filler materials are usually used, since for manufacturing reasons not only the battery module 12 but also the cooling plate 14 are usually not completely flat on its surface. For example, the surfaces of the battery module 12 and the cooling plate 14 may have bumps, dimples, indentations, and the like. Gaps can thus occur due to component-, shape-, and positional tolerances.
Fig. 4 shows a perspective view of a possible embodiment of the cooling plate 14. This embodiment of the cooling plate 14 is arranged between the upper two battery modules 12 (see fig. 1 and 3). The cooling plate 14 comprises a hollow profile 20, which is a thin-walled hollow profile having a wall thickness of, for example, approximately 0.4 mm. The entire hollow profile 20 can be produced, for example, by means of extrusion. End sections 22, 24 are arranged at the open ends of the hollow profile 20, which are not visible here in each case, and close the hollow profile 20 in a fluid-tight manner. The front end portion 22 according to the present illustration has a plurality of connections 26 for conveying and discharging the cooling medium and for introducing the cooling medium.
It is possible, for example, to introduce a cooling medium into the hollow profile 20 via the upper right connector 26. The hollow profile can have, for example, a left and a right chamber. The cooling medium is therefore first fed to the right chamber and flows as far as the end section 24, which has a cooling medium deflecting structure that is not visible here. Then, by means of this cooling medium deflection structure, the cooling medium reaches the left chamber of the hollow profile 20 and then flows to the connection 26, via which the now heated cooling medium can leave the hollow profile 20. The two lower connections 26 serve for the supply and discharge of the cooling medium to and from the lower cooling plate 14 (see fig. 1 and 3).
Fig. 5 shows a perspective view of a further embodiment of the cooling plate 14. This embodiment is mounted for the battery 10 between the lower two battery modules 12 (see fig. 1 and 3). The cooling plate 14 thus serves as an end piece, which can also be seen from the following: the front end section 28 according to the present illustration has only two connections 26. One of the connections 26 is in turn used for conveying the cooling medium, wherein the other of the connections 26 is used for discharging the cooling medium.
Fig. 6 shows another possible embodiment of the cooling plate 14. As can be seen here, the two end sections 28 have respective connections 26. The connections 26 arranged on the left in the present illustration can be used, for example, for supplying a cooling medium, while the connections 26 on the right can be used for allowing the cooling medium to flow out. The cooling plates 14 can also be operated in counterflow operation.
Fig. 7 shows an end section 22 of the cooling plate 14 in a perspective view. The intermediate wall 30 inside the end section 22 can be clearly seen here. The cooling medium can be supplied and discharged separately through the partition.
In fig. 8, end section 28 is shown in a perspective view, wherein it likewise has a partition 30.
Fig. 9 shows the end section 24 with the cooling medium deflecting structure mentioned in a perspective view. This end section 24 is therefore used in the embodiment of the cooling plate 14 shown in fig. 4 and 5 to divert the cooling medium, for example, from one chamber of the hollow profile 20 into the other chamber thereof.
Fig. 10 shows the hollow profile 20 only in a perspective view. In the embodiment of the hollow profile 20 shown here, the hollow profile has four individual chambers 32, which are separate from one another and extend in the longitudinal direction x of the hollow profile 20 or the cooling plate 14.
Fig. 11 shows the hollow profile 20 in a perspective detail view. Here, the chamber 32 arranged on the far right can be seen first and the part of the chamber 32 arranged next to it can also be seen. The two chambers 32 are separated from one another by a strain web 34 of the hollow profile 20. The strain webs 34 connect the upper hollow-profile inner side 36 to the lower hollow-profile side 38 and are an integral component of the hollow profile 20, and are therefore produced, for example, also by extrusion.
The hollow profile 20 through which the cooling medium can flow can be expanded by the application of an internal pressure, in particular in the vertical direction z. The height of the hollow profile 20 can likewise be reduced by the application of external pressure from above and below. This expansion and upsetting of the hollow profile 20 is supported by the cross-sectional shape of the strain bars 34. As can be seen, the strain gauge 34 that can be seen here has a cross section that does not connect the upper hollow profile inner side 36 and the lower hollow profile inner side 38 to one another on the shortest path. In other words, the strain bars 34 therefore do not extend straight in the vertical direction z, but rather s-shaped or zigzag-shaped. The strain bars 34 here have two diagonally running struts, not shown in detail, and one strut running in the transverse direction y. When the height of the hollow profile 20 is expanded or widened, the cross section of the strain bar 34 is stretched, whereas when the hollow profile 20 is upset in relation to its vertical direction z, the cross section of the strain bar 34 is likewise upset. The strain bars 34 serve, on the one hand, to reliably support the hollow profile material 0 on the inner side, both during expansion and during upsetting of the hollow profile 20. On the other hand, the cross-sectional shape of the strain gauge 34 facilitates the expansion of the hollow profile 20 and also its upsetting. The remaining strain gages 34 not visible here have the same shape as the strain gages 34 visible here.
As can be seen, an upper connection region, not shown in detail, at which the strain gauge 34 is connected to the upper hollow profile inner side 36, and a lower connection region, not shown in detail, at which the strain gauge 34 is connected to the lower hollow profile inner side 38, are spaced apart opposite to one another with respect to the transverse direction y. This contributes to the fact that the upper and lower sides of the hollow profile 20, which are not shown in detail here, cannot slide away from one another or move relative to one another in the transverse direction y, both when the hollow profile 20 is expanded and when it is upset. Furthermore, the strain webs 34 extend parallel to the longitudinal direction x of the cooling plate 14 over the entire length of the hollow profile 20, whereby the respective chambers 32 are separated from one another.
As can already be seen from fig. 10, the cooling plate 14 or the hollow profile 20 has a plurality of strain bars 34 arranged parallel to one another. Furthermore, the hollow profile 20 has a plurality of spacers 40, which are each arranged on one of the hollow profile inner sides 36, 38 and are spaced apart from the respective other hollow profile inner side 36, 38. The respective cross section of the separating webs 40 runs straight or parallel to the vertical direction z of the cooling plate 14 or the hollow profile 20. The spacers 40 serve in particular to ensure good heat transfer from the battery modules 12 to the cooling medium flowing through the individual chambers 32 of the hollow profiles 20. The spacers 40 extend into the hollow profile 20, so that, when heat is transferred from the battery module 12 to the cooling medium via the hollow profile 20, the hollow profile 20 is spread apart not only on the outer side but also on the inner side.
As can be seen, the spacers 40 are arranged alternately on the upper hollow-profile inner side 36 and the lower hollow-profile inner side 38. The division bar 40 does not impede the deformation of the hollow profile 20 both during the expansion and during the upsetting of the hollow profile 20. Since, as already mentioned, the spacers 40 do not connect the hollow profile inner faces 36, 38 to one another. This facilitates both the expansion and the upsetting of the hollow profile 20, in particular in the vertical direction z.
Fig. 12 shows the hollow profile 20 in a front view. Here, the cross-sectional shape of the strain webs 34 and the webs 40 can again be clearly seen. A plurality of spacers 40 is arranged between each two strain gages 34 with respect to the transverse direction y. The respective opposite longitudinal side 42 of the hollow profile 20 does not connect the upper side 44 of the hollow profile 44 to the lower side 46 of the hollow profile in each case on the shortest path, since it is curved according to the present illustration with respect to its cross section. However, other cross-sectional shapes are also possible, so that the opposite longitudinal side 42 can have the same cross-sectional shape as the strain gauge 34, for example. The opposing longitudinal sides 42 do not run straight in the vertical direction z, whereby the shape of the longitudinal sides 42 likewise facilitates the expansion and upsetting of the hollow profile 20, in particular in the vertical direction z.
Thus, by the described design of the hollow profile 20, its shape, in particular its thickness in the vertical direction z, can be changed quite easily by: either internal or external pressure is applied. The corresponding gap between the hollow profile upper side 44 or the hollow profile lower side 46 and the outer side of the battery module 12 can thus be reduced in the first place. Thereby, the filler material to be used can be reduced to a great extent. Furthermore, for example, a filler mat, not shown here, can also be arranged on the hollow profile upper side 44 and/or the hollow profile lower side 46. For such a shim mat, the process is considerably simpler than if the shim was applied, for example, by means of a metering system in the form of a bead or the like.
List of reference numerals:
10 cell
12 cell module
14 cooling plate
16 flow inlet
18 outflow opening
20 hollow section bar of cooling plate
22 end section of a cooling plate
24 end section of a cooling plate with a cooling medium deflection
26 end section joint
28 end section of Cooling plate
30 partition in the end section
32 cavities in hollow profiles
34 strain contact strip of hollow section bar
Inner side surface of 36 upper hollow section bar
Inner side surface of 38 lower hollow section bar
40 hollow section bar parting bead
42 longitudinal side of hollow profile
44 hollow section bar upper side
46 hollow section bar underside
x longitudinal direction
y transverse direction
z vertical direction.
Claims (15)
1. Cooling plate (14) for a battery (10) of a motor vehicle, comprising:
-a hollow profile (20) through which a cooling medium can flow, the height of which relative to the original shape can be increased by the application of an internal pressure and can be reduced by the application of an external pressure;
-wherein the hollow profile (20) has at least one strain bar (34) connecting an upper hollow profile inner side (36) with a lower hollow profile inner side (38),
-wherein the strain gauge (34) has a cross-section which, when the hollow profile (20) has its original shape, does not connect the upper hollow profile inner side (36) to the lower hollow profile inner side (38) on the shortest path and is stretched when the height of the hollow profile (20) increases and is upset when the height of the hollow profile (20) decreases.
2. The cooling plate (14) according to claim 1,
it is characterized in that the preparation method is characterized in that,
an upper connecting region, at which the strain bars (34) are connected to the upper hollow profile inner side (36), and a lower connecting region, at which the strain bars (34) are connected to the lower hollow profile inner side (38), are arranged opposite one another.
3. Cooling plate (14) according to claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the cross-section of the strain tab (34) has at least one substantially s-shaped section.
4. Cooling plate (14) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the strain webs (34) extend parallel to the longitudinal direction (x) of the cooling plate (14), in particular over the entire length of the hollow profile (20).
5. Cooling plate (14) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the cooling plate (14) has a plurality of strain webs (34) arranged parallel to one another.
6. Cooling plate (14) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the hollow profile (20) has at least one spacer (40) which is arranged on one of the inner hollow profile surfaces (36, 38) and is spaced apart from the other inner hollow profile surface (36, 38).
7. Cooling plate (14) according to claim 6,
it is characterized in that the preparation method is characterized in that,
the cross section of the separating strip (40) runs parallel to the vertical direction (z) of the cooling plate (14).
8. Cooling plate (14) according to claim 6 or 7,
it is characterized in that the preparation method is characterized in that,
the separating webs (40) run parallel to the longitudinal direction (x) of the cooling plate (14), in particular over the entire length of the hollow profile (20).
9. Cooling plate (14) according to any of claims 6 to 8 with reference to claim 5,
it is characterized in that the preparation method is characterized in that,
a plurality of spacers (40) is arranged between the two strain gages (34) with respect to the transverse direction of the cooling plate (14).
10. The cooling plate (14) according to claim 9,
it is characterized in that the preparation method is characterized in that,
the separating webs (40) are arranged alternately on the upper hollow profile inner side (36) and the lower hollow profile inner side (38).
11. Cooling plate (14) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
when the hollow profile (20) has its original shape, the opposite longitudinal sides (42) of the hollow profile (20) do not connect the hollow profile upper side (44) and the hollow profile lower side (46) to each other in each case on the shortest path.
12. The cooling plate (14) according to claim 11,
it is characterized in that the preparation method is characterized in that,
the longitudinal side (42) of the hollow profile (20) has an arcuate cross section or at least one at least substantially s-shaped section.
13. Cooling plate (14) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the respective open end side of the hollow profile (20) is closed by a respective end section (22, 24, 28) of the cooling plate (14), wherein at least one of the end sections (22, 24, 28) has a connection (26) for conveying and/or discharging a cooling medium.
14. Battery (10) for a motor vehicle having at least one cooling plate (14) according to one of the preceding claims, which is arranged on a battery module side of a battery module (12) of the battery (10).
15. The battery (10) according to claim 14,
it is characterized in that the preparation method is characterized in that,
a mat of a thermally conductive material is arranged on the side of the hollow profile (20) of the cooling plate (14) assigned to the battery module side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019113603.2 | 2019-05-22 | ||
| DE102019113603.2A DE102019113603A1 (en) | 2019-05-22 | 2019-05-22 | COOLING PLATE FOR A BATTERY FOR A MOTOR VEHICLE AND BATTERY FOR A MOTOR VEHICLE WITH A COOLING PLATE |
| PCT/EP2020/060157 WO2020233904A1 (en) | 2019-05-22 | 2020-04-09 | Cooling plate for a battery of a motor vehicle, and battery for a motor vehicle having a cooling plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113875071A true CN113875071A (en) | 2021-12-31 |
Family
ID=70285683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080033071.5A Pending CN113875071A (en) | 2019-05-22 | 2020-04-09 | Cooling plate for a battery of a motor vehicle and battery for a motor vehicle having a cooling plate |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113875071A (en) |
| DE (1) | DE102019113603A1 (en) |
| WO (1) | WO2020233904A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130601A1 (en) * | 2022-01-05 | 2023-07-13 | 宁德时代新能源科技股份有限公司 | Battery assembly, battery, and electric device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210154513A (en) * | 2020-06-12 | 2021-12-21 | 에스케이이노베이션 주식회사 | Battery Module |
| DE102022121853A1 (en) * | 2022-08-30 | 2024-02-29 | Kautex Textron Gmbh & Co. Kg | Fluid-temperable traction battery |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020233904A1 (en) | 2020-11-26 |
| DE102019113603A1 (en) | 2020-11-26 |
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