EP4515618A1 - Isolier- und kühlanordnung für eine batteriezelle - Google Patents
Isolier- und kühlanordnung für eine batteriezelleInfo
- Publication number
- EP4515618A1 EP4515618A1 EP23730020.7A EP23730020A EP4515618A1 EP 4515618 A1 EP4515618 A1 EP 4515618A1 EP 23730020 A EP23730020 A EP 23730020A EP 4515618 A1 EP4515618 A1 EP 4515618A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery cell
- cooling plate
- insulating
- insulation
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01M10/6555—Rods or plates arranged between the cells
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- 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
Definitions
- the invention relates to an insulating and cooling arrangement for a battery cell and a battery cell arrangement with an insulating and cooling arrangement, which is used in particular in traction batteries.
- the term battery has also become established for accumulators and is also used as such in the present application. This applies in particular to applications in vehicles and aircraft, such as motor vehicles or rail vehicles.
- traction batteries that must be cooled to ensure their performance and sufficient service life.
- Various designs for the battery cells of such batteries are known, in particular prismatic, round and pouch cells.
- Water-cooled cooling plates made of aluminum alloys are usually used for cooling when high performance requirements are required.
- the desired voltage is achieved, which is in the kV range for traction batteries.
- good insulation from the cooling system must be ensured, otherwise short circuits and destruction of the battery will occur.
- a compact and lightweight design of the traction battery is necessary, while at the same time meeting high mechanical and environmental requirements over a long service life.
- An insulating paint can also be applied to the cooling surfaces. It is difficult to ensure long-term good adhesion to the surface, and cracks, pores or detachments, as well as corners, edges and holes, pose a risk. Tolerance compensation is not possible.
- the object of the invention is to provide a cooling arrangement for a battery cell that enables good cooling while at the same time providing reliable insulation. This task is solved by an insulating and cooling arrangement and by a battery cell arrangement with the respective features of the independent patent claims. Advantageous embodiments of the invention are specified in the respective dependent patent claims.
- a first aspect of the invention relates to an insulation and cooling arrangement for at least one battery cell, which has at least one cooling plate with a first main side for thermal contact with the at least one battery cell and with a first and an opposite second end face and an insulating element for electrical insulation a first end face of the cooling plate, wherein a first side surface of the insulation element lies essentially in a plane with the first main side of the cooling plate.
- the invention provides for an insulating element to be provided on a first end face of a cooling element, the side surface of which lies essentially in a plane with a side surface of the cooling plate.
- This is the side surface of the cooling plate that is intended for thermal contact with a battery cell and is referred to as the first main side.
- the insulation element virtually enlarges the first main side of the cooling plate beyond its first end face. Because the side surfaces lie essentially in one plane, there is a substantially flat base for an insulating layer, so that it does not have to be guided around an edge or corner. Possible creepage distances to the cooling plate are significantly increased and the insulation is thereby improved.
- the term cooling plate includes different forms of cooling devices and not just plate-shaped structures in the narrower sense; in particular, the side surfaces do not have to be strictly flat.
- the cooling plate is provided with a coolant, for example
- a second aspect of the invention relates to a battery cell arrangement with at least one battery cell and an insulating and cooling arrangement according to the invention, wherein a first main side of the battery cell is in thermal contact with the first main side of the cooling plate (4) and the insulating layer is arranged between these first main sides, and wherein the insulating layer extends over the substantially entire first main side of the cooling plate and the substantially entire first side surface of the insulating element.
- the invention therefore also includes a battery cell arrangement with one or more battery cells and the insulating and cooling arrangement.
- a first main side of the battery cell is in thermal contact with the first main side of the insulating and cooling arrangement.
- An insulating layer is arranged between the first main side of the cooling plate and the first main side of the battery cell, which has sufficient electrical insulation properties and at the same time sufficient thermal conductivity.
- the insulating layer extends over essentially the entire first main side of the cooling plate and over at least part of the first side surface of the insulating element. Because the side surfaces of the cooling plate and insulation element are essentially in one plane, the insulating layer is applied to a flat surface, which is easy to manufacture and reduces the risk of weak points or damage. Furthermore, a certain tolerance compensation can take place.
- the battery cell can have a usual design. In particular, it can be a prismatic cell, a pouch cell or a round cell.
- a first end face of the battery cell lies essentially in a plane with the first end face of the cooling plate.
- these parts are "the same height" and the insulation element protrudes beyond this.
- the first end face of the cooling plate can be higher or lower than the end face of the battery cell, with the cooling being improved in the first case (larger cooling plate). With a smaller cooling plate, if the If the first end face of the cooling plate is lower than the end face of the battery cell, the space requirement can be reduced. It is possible, for example, for the side of the insulation element facing away from the cooling plate to lie in a plane with the first end face of the battery cell, so that the insulation element does not extend over the battery cell protrudes and a particularly compact arrangement is achieved.
- the insulating layer preferably covers the entire first side surface of the insulating element, but it can also leave a part exposed if sufficient insulation is ensured in the area of the first end face of the cooling plate.
- the insulation element can be at least partially covered with an electrically insulating fastening element.
- the fastening element can serve in particular to fasten the insulation element to the cooling plate and/or to adequately fix the battery cell.
- the fastening element can at least partially cover the battery cell, thereby achieving fixation in the corresponding direction.
- the fastening element can, for example, be connected to the insulation element due to its shape, in particular through toothing or meshing, or a screw connection can be provided.
- the first end face of the cooling plate can be flat, but it can also have a bulge or a projection that projects into the insulation element. This improves the insulation effect.
- a further insulating element can be present on a second end face of the cooling plate opposite the first end face, the first side surface of which also lies essentially in a plane with the first main side of the cooling plate. The advantageous effects also occur here, since the insulating layer is applied on a substantially smooth plane and it is not necessary to guide the insulating layer around corners or edges for good insulation. If there are minor deviations from a completely smooth plane, for example due to manufacturing tolerances, the insulating layer can provide the necessary compensation.
- the further insulation element as for the insulation element. It is particularly favorable if the further insulation element also forms a holder or support for the battery cell or for the battery cell adjacent here. Depending on the arrangement of the battery cells, the battery cell adjacent to the further insulation element may be different than the battery cell adjacent to the insulation element.
- the further insulation element can have a T-shaped or angular cross section and extend at least partially under the adjacent battery cell. Furthermore, the second end face of the cooling plate can have a bulge or a projection as described in connection with the first end face.
- a module In general, several battery cells, referred to herein as a module, are arranged between two insulating and cooling arrangements and interconnected in a desired manner in order to generate the required voltage and current.
- the geometric arrangement of the battery cells in the module depends on the type of battery cell.
- several such modules are arranged next to each other, with an insulating and cooling arrangement being present between two modules and these quasi internal insulating and cooling arrangements also being on a second, the first, main page opposite second main side have an insulating layer.
- the internal insulation and cooling arrangements are preferably constructed symmetrically.
- a thermal conduction structure can be present between some or all of the battery cells of a module. This is preferably thermally and electrically conductive, and the electrical conductivity can be used in particular to interconnect the battery cells.
- the battery cell arrangement is particularly preferably designed as a traction battery of a vehicle, in particular a rail vehicle.
- FIG. 1 shows a first embodiment of a battery cell arrangement according to the invention with an insulating and cooling arrangement according to the invention
- FIGS. 9 and 10 show a seventh embodiment A cross section is shown in each of the figures, but for reasons of clarity the internal structure of the individual components such as the cooling plate and battery cell is not shown.
- the insulating and cooling arrangement 2 comprises a cooling plate 4 with a first main side 4a and a first end face 4b. On the first end face 4b is an insulation element 5 is arranged, which has a first side surface 5a.
- the first side surface 5a and the first main side 4a lie in one plane, so that a continuous, smooth support surface is formed here for an insulating layer 6.
- the insulating layer 6 extends over the entire first main surface 4a of the cooling plate and over the entire first side surface 5a of the insulation element.
- the battery cell 3 is electrically insulated from the cooling plate on its first main side 3a by the insulating layer 6, but is thermally connected.
- a glass fiber reinforced silicone material can be used, for example with a ceramic filler for better thermal conductivity with a thickness in the range of 0.1mm - 5mm can be used, or another material used in the prior art, such as Kapton or polyester.
- a combination of such a glass fiber reinforced silicone material with a crosslinking, initially liquid silicone material is also possible.
- a first end face 3b of the battery cell lies in a plane with the first end face 4b of the cooling plate.
- the first end faces 3b, 4b can also lie in different levels.
- a prismatic battery cell is provided.
- Fig. 2 shows battery cell arrangements lying side by side with battery cells 3, 30, 31 and insulation and cooling arrangements with cooling plates 4, 40 and insulation elements 5, 50 in between.
- the insulating layer 6 is applied or arranged on the first main side 4a, 40a of the cooling plates and on the opposite second main side 4c, 40c.
- the insulating layer 6 can each have a greater length, with the length protruding beyond the first end face 3b, 30b, 31b of the battery cells 3, 30, 31 or beyond the respective insulation element 5, 50 being transferred to the adjacent battery cell or the insulation element can. Even if damage occurs in this area, the creepage distance will not be shortened as this will continue to be guaranteed by the insulation element.
- the side 5b, 50b of the insulation element 5, 50 facing away from the cooling plate lies in a plane with the first end face 3b, 30b, 31b of the battery cells.
- the same height results in a particularly space-saving structure. It makes sense to provide a further insulation element in the same way on the side opposite the first end face 4b of the cooling plate, i.e. the cooling plate 4 is correspondingly shorter and the further insulation element lies in a plane with the underside of the battery cell. This results in a very space-saving structure overall while at the same time providing very reliable electrical insulation.
- Fig. 3 shows a third exemplary embodiment, in which the insulation element 5 is covered with an electrically insulating fastening element 7.
- the fastening element 7 also extends over the insulating layer 6 and part of the adjacent battery cells 3, 31.
- the battery cells are fixed in this way.
- a fixation or support in the opposite direction is achieved by a further insulation element 8 on the second end face 4d of the cooling plate, which is opposite the first end face.
- This further insulation element 8 has a T-shaped cross section and extends partially under the adjacent battery cells, i.e. under a second end face 3c, 31c, which is opposite the first end face 3a. Its side surfaces lie in a plane with the first and second main sides 4a, 4c of the insulating and cooling arrangement.
- the further insulation element 8 can have a rectangular cross section, i.e. it does not extend under the adjacent battery cells and does not serve for fixation or support. It then preferably ends with the second end face 3c, 31c, as already explained in the description of FIG. 2.
- the fastening element 7 can be connected to the insulation element 5 and possibly the cooling plate, for example by a screw connection. Insulating element 5 and fastening element 7 can also be shaped so that they are connected to one another by interlocking.
- the insulation is also improved in the lower region of the battery cell by the further insulation element 8, since possible creepage distances are significantly extended.
- the lower insulation element can only be covered with an insulation material and its core can consist of another material, for example a thermally conductive material and preferably the material of the cooling plate.
- Fig. 4 In this embodiment, the first end face 4b of the cooling element has a projection that projects into the insulation element 5. As a result, the cooling plate 4 can be enlarged with approximately undiminished insulation effect.
- Fig. 5 shows the upper part of the insulation and cooling arrangement in the event that the first or second main side 4a, 4c of the cooling plate 4 and the corresponding side surface 5a of the Insulation element 5 does not lie completely in one plane.
- the small step that occurs can be compensated for by the insulating layer 6 if an insulating layer 6 with sufficiently plastic properties is selected.
- Fig. 6 shows an embodiment in which a projection of the cooling plate 4 projects into the further insulation element 8 and the insulation element 5 terminates at the top with the first end face 3b, 31b of the battery cell.
- FIG. 7 and 8 show an exemplary embodiment with battery cells 3, 32, 33, 34, with Fig. 8 showing a cross section in the plane shown in dashed lines in Fig. 7, i.e. at the level of the insulating element 5.
- Battery cells 32, 33, 34 can be seen, which are designed as pouch cells.
- a heat-conducting structure 9 is inserted after every three cells, for example, which extends on one side, the right side in FIG. 8, up to the insulation layer 6 and can be connected here so that it has a comb-shaped or repeating L- shaped structure.
- FIG. 9 and 10 show an exemplary embodiment with round cells, with FIG. 10 showing a cross section in the plane shown in dashed lines in FIG Poles are suitably connected by means of the electrically conductive heat-conducting structure; in the example, fourteen cells are connected in series, as can be seen in Fig. 10.
- the heat-conducting structure 9 also serves for the thermal connection to the insulating layer 6 on both sides of the module.
- the cooling plates 4 border on the insulation element 5 and the further insulation element 8.
- the first side surfaces 5a, 8a of the insulation elements 5, 8 and the first main side 4a of the cooling plate lie in one plane, so that the insulating layer 6 is not guided around edges or corners must.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022205551.9A DE102022205551A1 (de) | 2022-05-31 | 2022-05-31 | Isolier- und Kühlanordnung für eine Batteriezelle |
| PCT/EP2023/064214 WO2023232690A1 (de) | 2022-05-31 | 2023-05-26 | Isolier- und kühlanordnung für eine batteriezelle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4515618A1 true EP4515618A1 (de) | 2025-03-05 |
Family
ID=86760415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23730020.7A Pending EP4515618A1 (de) | 2022-05-31 | 2023-05-26 | Isolier- und kühlanordnung für eine batteriezelle |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20260005332A1 (de) |
| EP (1) | EP4515618A1 (de) |
| JP (1) | JP2025520167A (de) |
| KR (1) | KR20250026204A (de) |
| CA (1) | CA3256902A1 (de) |
| DE (1) | DE102022205551A1 (de) |
| WO (1) | WO2023232690A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10223782B4 (de) | 2002-05-29 | 2005-08-25 | Daimlerchrysler Ag | Batterie mit wenigstens einer elektrochemischen Speicherzelle und einer Kühleinrichtung und Verwendung einer Batterie |
| DE102006059989A1 (de) | 2006-12-19 | 2008-06-26 | Daimler Ag | Anordnung zur Kühlung einer aus mehreren Einzelzellen bestehenden Batterie sowie Verfahren zur Herstellung der Anordnung |
| DE102007021309A1 (de) | 2007-05-07 | 2008-11-13 | Valeo Klimasysteme Gmbh | Antriebsbatteriebaugruppe eines Elktro-, Brennstoffzellen- oder Hybridfahrzeugs |
| DE102009042270A1 (de) * | 2009-09-22 | 2011-03-31 | Behr Gmbh & Co. Kg | Isolationsvorrichtung und Verfahren zur Herstellung einer Isolationsvorrichtung |
| DE102012018038A1 (de) * | 2012-09-13 | 2014-03-13 | Daimler Ag | Einzelzelle und Batterie aus einer Mehrzahl von Einzelzellen |
| DE102013204670B3 (de) * | 2013-03-18 | 2014-05-15 | Magna Steyr Battery Systems Gmbh & Co Og | Batteriesystem mit einer Klebstoffraupe und Verfahren zur Herstellung eines Batteriesystems |
| DE102018202946B4 (de) | 2018-02-27 | 2026-03-26 | Bayerische Motoren Werke Aktiengesellschaft | Batteriemodul für eine Batterie eines Kraftfahrzeugs sowie Batterie für ein Kraftfahrzeug |
-
2022
- 2022-05-31 DE DE102022205551.9A patent/DE102022205551A1/de active Pending
-
2023
- 2023-05-26 EP EP23730020.7A patent/EP4515618A1/de active Pending
- 2023-05-26 US US18/868,368 patent/US20260005332A1/en active Pending
- 2023-05-26 KR KR1020247043459A patent/KR20250026204A/ko active Pending
- 2023-05-26 WO PCT/EP2023/064214 patent/WO2023232690A1/de not_active Ceased
- 2023-05-26 JP JP2024571058A patent/JP2025520167A/ja active Pending
- 2023-05-26 CA CA3256902A patent/CA3256902A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023232690A1 (de) | 2023-12-07 |
| CA3256902A1 (en) | 2025-04-15 |
| US20260005332A1 (en) | 2026-01-01 |
| KR20250026204A (ko) | 2025-02-25 |
| JP2025520167A (ja) | 2025-07-01 |
| DE102022205551A1 (de) | 2023-11-30 |
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Owner name: SIEMENS MOBILITY GMBH Owner name: PLASTIC OMNIUM E-POWER GMBH |