Cooling device and electric charging station

Abstract

The invention relates to a cooling device (1), in particular for an electric charging station for supplying electrical energy to a vehicle having a battery electric drive, - said cooling device comprising a first heat exchanger (2a) and at least one second heat exchanger (2b-2d), which each have at least one first fluid path (3) through which a first fluid (F1) can flow and at least one second fluid path (4) through which a second fluid (F2) can flow, wherein the two fluid paths (3, 4) are thermally connected to one another in order to transfer heat between the first fluid (F1) and the second fluid (F2), - wherein the at least two heat exchangers (2a-2d) are arranged one after the other along a Z direction (Z), and - wherein (in each case) one holding device (5) is arranged along the Z direction (Z) between at least two heat exchangers (2a-2d), preferably between all the heat exchangers (2a-2d).

Description

[0001] Cooling unit and electric charging station

[0002] The present invention relates to a cooling device, in particular for an electric charging station for supplying a battery-electric vehicle with electrical energy. The invention also relates to an electric charging station with such a cooling device.

[0003] Electric charging stations for vehicles, such as cars, rail vehicles, and battery-electric watercraft, serve to provide and transfer electrical energy to the vehicle's battery for charging. To minimize charging time, the energy transfer from the charging station to the vehicle occurs at the highest possible electrical power. However, this process generates significant amounts of waste heat within the charging station and / or the charging cable, which must be dissipated, particularly to prevent damage to the charging station and / or the charging cable due to excessive operating temperature.

[0004] Conventional charging stations are known to be equipped with a cooling system comprising a cooling circuit in which a cooling medium circulates. This medium absorbs the waste heat generated by the charging station and its charging cable during operation. A heat exchanger is typically integrated into the cooling circuit, transferring the heat absorbed by the cooling medium to another medium, such as air, and thus dissipating it from the cooling circuit. The circulating cooling medium can then absorb heat again from the charging station and / or the charging cable.

[0005] The heat exchanger in question – known to relevant experts, for example, as stacked plate heat exchangers and flat tube heat exchangers – is a key component in conventional charging stations for dissipating the waste heat generated within the charging station. It is dimensioned to provide the cooling capacity required for the charging station. However, this necessitates individual dimensioning of the respective heat exchanger for each specific charging station.

[0006] However, such an individual interpretation leads to considerable additional costs in the production of the heat exchanger and thus the charging station.

[0007] It is therefore a task to explore new approaches in the development of cooling systems for charging stations. In particular, an improved design for such a cooling system should be created, whose maximum available cooling capacity can be easily adapted to different, application-specific requirements.

[0008] This problem is solved by the subject matter of the independent patent claims. Preferred embodiments are the subject matter of the dependent patent claims.

[0009] The basic idea of ​​the invention is therefore to design a cooling device, as mentioned above, modularly with at least two heat exchangers, each of which rests against and can be attached to a common mounting device. Depending on the desired cooling capacity to be provided by the entirety of the heat exchangers and thus the cooling device, the cooling device can be equipped with a suitable number of heat exchangers, which are arranged successively along a predetermined direction – hereinafter referred to as the “Z-direction”. In the cooling device according to the invention presented here, a mounting device is arranged sandwich-like between each pair of heat exchangers adjacent along this Z-direction, to which the two heat exchangers are resting and preferably attached. Thus, n-1 mounting devices are required and provided to design a cooling device with n heat exchangers.This means that at least two heat exchangers and at least one mounting device are arranged alternately in the Z-direction. Advantageously, the heat exchangers and / or the mounting device can each be designed as identical components. The individual design or dimensioning of a single heat exchanger depending on the desired cooling capacity of the cooling system, as is common with conventional cooling systems, is unnecessary with the solution proposed here.

[0010] At least one heat exchanger can be designed as a stacked disc heat exchanger or as a flat tube heat exchanger.

[0011] In detail, a cooling device according to the invention comprises a first heat exchanger and at least one second heat exchanger. Each heat exchanger has at least one first fluid path through which a first fluid flows and at least one second fluid path that is fluidically separated from the first fluid path and through which a second fluid flows. The fluid paths are thermally connected to each other in the heat exchanger for the transfer of heat between the first fluid and the second fluid. Thus, heat can also be transferred from the first fluid to the second fluid in order to reduce the temperature of the first fluid. According to the invention, the at least two heat exchangers are arranged consecutively along a Z-direction and preferably spaced apart from each other.Between at least two heat exchangers, preferably between all heat exchangers of the cooling system, a holding device is arranged along the Z-direction. These heat exchangers rest against this holding device and are preferably connected to it. In other words, each holding device is aligned with two heat exchangers adjacent in the Z-direction and is positioned between these two heat exchangers in the Z-direction. The connection between the respective heat exchanger and the holding device can be detachable, for example, by means of at least one screw connection, at least one clip connection, and / or at least one snap-fit ​​connection.

[0012] In a preferred embodiment, the at least one second fluid path of each heat exchanger extends along the Z-direction. In this embodiment, the holding device is designed as a retaining frame through which the second fluid flows along the Z-direction. For this purpose, the retaining frame can enclose a frame opening through which the second fluid flows. The retaining frame, in turn, can have several retaining struts that completely surround the frame opening. Particularly preferably, the retaining frame can have a substantially rectangular geometry. In this case, the retaining frame can comprise four retaining struts, with two of the four retaining struts arranged in pairs opposite each other, and two adjacent retaining struts arranged at right angles to each other.

[0013] The mounting frame can be particularly advantageously arranged in a frame plane extending perpendicular to the Z-direction. This minimizes the mounting frame's footprint along the Z-direction, thereby reducing the overall space requirement of the cooling unit. This beneficial effect increases with the number of mounting frames incorporated into the cooling unit.

[0014] In another preferred embodiment, the retaining device is designed as a sealing element. The sealing element can advantageously be compressible and / or have a high coefficient of friction. The sealing elements are arranged between the pipe bodies of the fluid distributors or fluid collectors of adjacent heat exchangers, or between the pipe bodies of the fluid distributor or fluid collector of a heat exchanger and an inner wall of a cooling device housing.

[0015] The sealing elements thus fulfill several functions: Firstly, they fix the heat exchangers in their installation position through their compressibility and / or their high coefficient of friction, and secondly, they ensure that the flow path of the second fluid is sealed against the housing, so that the flow of the second fluid can only take place through the second fluid paths of the heat exchangers provided for this purpose.

[0016] According to a further advantageous embodiment, at least three, preferably more, heat exchangers can be arranged in succession along the Z-direction. Accordingly, a holding device or frame is arranged between each pair of heat exchangers adjacent in the Z-direction. This creates a modular design in which the number of desired heat exchangers, and thus the maximum cooling capacity achievable by the cooling device, can be adapted to the specific application. In another preferred embodiment, at least one heat exchanger has a plurality of tube bodies, in particular flat tubes, which are arranged at intervals along an X-direction different from the Z-direction and each defines a first fluid path through which the first fluid can flow. Preferably, the X-direction extends perpendicular to the Z-direction.At least one tube body, preferably all tube bodies, can be designed as a flat tube. The individual tube bodies of each heat exchanger extend along a Y-direction. Particularly preferably, the Y-direction extends perpendicular to the Z-direction and also perpendicular to the X-direction. Furthermore, the tube bodies open at one end into a common fluid distributor for distributing the fluid to the individual tube bodies, and at the other end opposite the first end into a fluid collector located opposite the common fluid distributor in the Y-direction for collecting the fluid after it has flowed through the individual tube bodies. The fluid distributors and fluid collectors of two heat exchangers adjacent along the Z-direction are each connected to, preferably in conjunction with, the holding device arranged between these two heat exchangers.This connection can preferably be detachable, for example by means of at least one screw connection and / or adhesive connection and / or snap-fit ​​connection. Particularly preferably, two or more of the at least two heat exchangers of the cooling device can be configured as described above. In this embodiment, gaps formed between the tube bodies, which can extend along the Y-direction like the tube bodies themselves, each form a second fluid path through which the second fluid can flow along the Z-direction.

[0017] Particularly preferably, at least one fluid distributor and, alternatively or additionally, at least one fluid collector can have a container extending along the X-direction. This container can particularly preferably be designed as a pipe body extending along the Y-direction and consequently also as a pipe body through which the first fluid can flow along the Y-direction. In this variant, the container or pipe body is at least partially received in a receptacle provided on the holding device or the holding frame and is preferably attached to the receptacle. As already explained, this attachment can particularly preferably be realized by means of a screw connection and / or adhesive connection and / or clip connection and is thus detachable.

[0018] Particularly advantageous, because it enables a particularly stable fixation of the container to the mounting frame, is that at least one receptacle can be designed as a recess or depression formed in the mounting frame and extending along the X-direction. Preferably, the receptacle can be designed to be complementary to the container or tube body that is, preferably partially, received in the receptacle or recess. This variant enables a particularly stable attachment of the container to the mounting frame or mounting device and simultaneously results in a particularly compact design.

[0019] According to an advantageous embodiment, at least one fluid collector, preferably by means of a pipe body, can communicate fluidically with the fluid distributor of a heat exchanger adjacent in the Z-direction. This is particularly advantageous for several or even all fluid distributors or fluid collectors of the heat exchangers present in the cooling system. This results in a fluidic series connection in which the individual heat exchangers are successively supplied with or through which the first fluid flows. In this embodiment, the fluid distributors and the fluid distributors in the Z-direction are therefore particularly preferably arranged consecutively. This ensures that all existing heat exchangers can be supplied with the first fluid or have the fluid discharged from them in a space-saving manner. In particular, this results in a particularly simple, and therefore compact and space-saving, fluidic connection.Interconnection of the first fluid paths of the heat exchangers, which also brings cost advantages.

[0020] Particularly advantageous is the first fluid being a cooling medium, preferably liquid, which most preferably contains water and / or glycol and / or mixtures thereof and / or with other substances. The second fluid can be gaseous, for example, air. The use of a liquid cooling medium as the first fluid allows for efficient absorption and transport of heat, thereby improving the efficiency of the cooling system. Likewise, the use of air as the second fluid allows for particularly efficient heat dissipation by transferring heat from the first to the second fluid, which in turn allows for particularly effective cooling of the first fluid or the cooling medium. Both measures, individually or in combination, significantly increase the efficiency of the cooling system.

[0021] In another preferred embodiment, the cooling device includes a conveying device for conveying the second fluid through the at least one second fluid path. Particularly preferably, the conveying device can comprise or be a blower for conveying air. This embodiment proves to be particularly advantageous when air is to be used as the second fluid, since it can be conveyed by the blower in a simple yet highly efficient manner through the existing heat exchangers or their second fluid paths.

[0022] In a further preferred embodiment, the conveying device or blower for conveying the second fluid or air is configured along a conveying direction that extends parallel to the Z-direction. Thus, the second fluid can be supplied to all successive heat exchangers or their secondary fluid paths along the Z-direction for absorbing heat from the first fluid. In particular, the second fluid can be conveyed through all heat exchangers and thus through the secondary fluid paths by means of a single conveying device.

[0023] Preferably, the conveying device or blower can be arranged upstream of the heat exchanger with respect to the conveying direction. In this configuration, the conveying device or blower can draw in the second fluid, in particular air, and successively convey it through the second fluid paths of the heat exchanger. This allows for effective heat transfer from the first fluid to the second fluid and equally effective heat removal from the heat exchanger.

[0024] The invention further relates to an electric charging station for supplying a vehicle with a battery-electric drive with electrical energy. For this purpose, the charging station can be connected on its input side to an electrical power supply, in particular a power grid, and on its output side to an energy storage device, in particular a rechargeable battery, of the vehicle to be charged. The electric charging station according to the invention comprises a cooling circuit in which a cooling medium can circulate to absorb the waste heat generated by the charging station during operation. Preferably, the cooling medium can be circulated during operation of the charging station by means of a pumping device, in particular a fluid pump, arranged in the cooling circuit.Furthermore, the charging station according to the invention comprises a cooling device according to the invention as described above, so that the advantages of the cooling device according to the invention, as explained above, are transferred to the charging station according to the invention. According to the invention, the first fluid paths of the at least two heat exchangers are arranged in the cooling circuit of the charging station, so that the cooling medium circulating in the cooling circuit forms the first fluid mentioned above.

[0025] The second fluid can preferably be air. This allows heat absorbed by the cooling medium to be transferred to the air flowing through the heat exchangers and thus dissipated from the charging station. This reduces the temperature of the cooling medium, thereby cooling it so that it can absorb waste heat again.

[0026] Further important features and advantages of the invention will become apparent from the dependent claims, the drawings and the associated description of the figures based on the drawings.

[0027] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified, but also in other combinations or on their own, without leaving the scope of the present invention.

[0028] Preferred embodiments of the invention are shown in the drawings and are explained in more detail in the following description, wherein identical reference numerals refer to identical or similar or functionally identical components.

[0029] The figures shown schematically are: Fig. 1 shows a first embodiment of a cooling device according to the invention in an exploded view;

[0030] Fig. 2 shows the cooling device of Fig. 1 in an assembled state;

[0031] Fig. 3 shows a second embodiment of a cooling device according to the invention in an assembled state;

[0032] Fig. 4 shows the cooling device of Fig. 3 from a different perspective;

[0033] Fig. 5 shows a vertical section through a section of the cooling device of Figs. 3 and 4 in the area of ​​the arrangement of the heat exchangers in the housing.

[0034] Figures 1 and 2 each illustrate a first embodiment of a cooling device 1 according to the invention. Figure 1 is an exploded view of Figure 2, which shows the cooling device 1 in an assembled state. In the example scenario, the cooling device 1 shown comprises four different, but structurally identical, heat exchangers 2a-2d. Each of the four heat exchangers 2a to 2d has several first fluid paths 3 through which a first fluid F1 can flow, and – fluidically separated from the first fluid paths 3 – several second fluid paths 4 through which a second fluid F2 can flow, fluidically separated from the first fluid F1.

[0035] The first and second fluid paths 3, 4 are connected in the respective heat exchanger 2a-2d for the transfer of heat between the first fluid F1 fluidically and the second fluid F2 thermally. In this way, heat can be transferred from the first fluid F1 to the second fluid F2, thereby reducing the temperature of the first fluid F1. The first fluid F1 can be a liquid cooling medium K containing water and / or glycol. The use of a water- or glycol-containing cooling medium as the first fluid F1 allows for effective heat absorption, thus increasing the efficiency of the cooling device. The second fluid F2 can be, for example, air L, particularly from the environment 27 of the cooling device 1.

[0036] As can be seen in Fig. 1, each of the four heat exchangers 2a to 2d has a plurality of tube bodies 7, which in this example are designed as flat tubes 8 and are arranged at intervals along an X-direction perpendicular to the Z-direction Z. Each tube body 7 or each flat tube 8 defines a first fluid path 3 through which the first fluid F1 can flow.

[0037] The individual tube sections 7 of each heat exchanger 2a-2d extend along a Y-direction that is perpendicular to both the Z-direction Z and the X-direction. Each individual tube section 7 has a first end 10a, located in the Y-direction, that connects fluidically to a common fluid distributor 11 for distributing the first fluid F1 to the individual tube sections 7. A second end 10b, located opposite the first end 10a, connects to a fluid collector 12, also located in the Y-direction opposite the common fluid distributor 11, for collecting the first fluid F1 after it has flowed through the individual tube sections 7. In contrast to the first fluid paths 3, the second fluid paths 4 of each heat exchanger 2a-2d extend along the Z-direction Z.The spaces 9 formed in the X-direction between the pipe bodies 7 and consequently extending along the Y-direction like the pipe bodies 7 form - fluidically separated from the first fluid path 3 - each a second fluid path 4 through which the second fluid F2 can flow along the Z-direction.

[0038] The fluid distributors 11 and the fluid collectors 12 of two heat exchangers 2a-2d adjacent along the Z-direction Z are each abutting a holding device 5 arranged between these two heat exchangers 2a-2d, preferably connected to it. This connection can be detachable, for example in the form of screw connections, or permanent. An adhesive bond is a suitable option for a permanent connection.

[0039] As can be seen in Figures 1 and 2, each of the four fluid distributors 11 and each of the four fluid collectors 12 can have a container 13 or 14, which in the example is designed as a pipe body 15 or 16 extending along the X-direction and thus through which the first fluid F1 can flow along the X-direction. Each of these containers 13, 14, and thus each of the pipe bodies 15, 16, is partially received in a receptacle 17 provided on the holding device 5 or on the holding frame 6 and is attached to the holding frame 6 via the receptacle 17. The receptacles 17 can each be designed as recesses 18 in the holding frame 6 extending along the X-direction, which are complementary to the container 13, 14 or pipe body 15, 16 received in the receptacle 17 or recess 18.The fastening of the heat exchanger 2a-2d to the respective holding device 5 can be detachable, for example by means of at least one or more screw connections, clip connections or snap connections.

[0040] The fluid collector 12 of the first heat exchanger 2a in the Z direction is connected via a pipe body 19 and connection elements 28 to the fluid distributor 11 of the second heat exchanger 2b in the Z direction, and the heat exchangers 2c and 2d following in the Z direction are connected to each other in a corresponding manner. This results in a series connection of the four heat exchangers 2a-2d through which the first fluid F1 flows.

[0041] As can be seen in Figures 1 and 2, the four heat exchangers 2a-2d are arranged consecutively and spaced apart along the Z-direction. A holding device 5 is arranged between each pair of heat exchangers 2a-2d adjacent to each other along the Z-direction, and the two heat exchangers 2a-2d are connected to this holding device. In the example scenario shown in Figures 1 and 2, three such holding devices 5 are provided. Thus, the heat exchangers 2a-2d and the holding devices 5 alternate along the Z-direction.

[0042] In this example, each of the three holding devices 5 is designed as a holding frame 6 through which the second fluid F2 can flow along the Z-direction. Each of the three holding frames 6 can be arranged in a respective frame plane that extends perpendicular to the Z-direction. Each of the three holding frames 6 can enclose a frame opening 21 through which the second fluid F2 can flow. For this purpose, the holding frame 6 can have several holding struts 22a-22d that completely surround the frame opening 21. Particularly advantageously, each holding frame 6 can have a substantially rectangular geometry and comprise four holding struts, wherein two of the four holding struts 22a-22d are arranged in pairs opposite each other, and adjacent holding struts 22a-22d are arranged at right angles to each other. As shown in Fig.As further illustrated in Figures 1 and 2, the cooling device 1 can include a conveying device 23 with a support 25 and a blower 24 arranged on the support 25 for conveying the second fluid F2 or the air L through the second fluid paths 4. The conveying device 23 or the blower 24 is designed to convey the second fluid F2 or the air L along a conveying direction F which runs parallel to the Z-direction. Advantageously, the conveying device 23 or the blower 24 can be arranged, as shown, upstream of the four heat exchangers 2a-2d with respect to the conveying direction F. Thus, the second fluid F2, in this example the air L, can be drawn in by the conveying device 23 or by the blower 24 and successively conveyed on the pressure side through all second fluid paths 4 of the four heat exchangers 2a-2d that are successive in the Z direction and absorb heat in each of these from the first fluid F1 or from the cooling medium K.

[0043] Opposite the conveying device 23 or the blower 24 in the conveying direction F, an end frame 26, through which the second fluid F2 flows, can be arranged, to which the (fourth) heat exchanger 2d is attached. The end frame 26 can also have four retaining struts 22a-22d for this purpose. Thus, along the conveying direction F or the Z-direction, the four heat exchangers 2a-2d and the three retaining devices 5 are arranged alternately between the conveying device 23 and the end frame 26.

[0044] The three holding devices 5 together with the carrier 25 of the conveying device 23 and with the end frame 26 form a housing 20 which limits the second fluid paths 4 transversely to the conveying direction F (see Fig. 2).

[0045] Figures 3 to 5 each illustrate a second embodiment of a cooling device 1 according to the invention. In contrast to the embodiment described above, the cooling device 1 here has a housing 29, which is composed of a housing front part 30, two housing side parts 31, 32, a housing rear part 34, and a housing cover 35. The housing rear part 35 forms—in addition to the rear wall—a bottom wall of the housing 29 and also has a side wall that covers one of the housing side parts 32. In this embodiment, the cooling device 1 has two conveying devices 23, each designed as a blower 24, which are arranged one above the other in two corresponding recesses in the housing front part 30.

[0046] Within the housing 29, as in the first embodiment, four heat exchangers 2a-2d are arranged, of which, in this view, only the upper ends of the containers 13, 14, designed as tube bodies 15, 16, of the fluid distributors 11 and fluid collectors 12 are visible. The fluid distributors 11 and fluid collectors 12 are fluidically interconnected via several tube bodies 19 and connection elements 28 in a manner already known from the previous embodiment.

[0047] The two housing side parts 31, 32 each have a step 33, wherein the fluid distributors 11 and fluid collectors 12 of the four heat exchangers 2a-2d are each arranged in an area between a step 33 and the housing rear part 34.

[0048] Here, the pipe bodies 15, 16 of the fluid distributor 11 and fluid collector 12 of the first heat exchanger 2a in the Z direction are sealed against the shoulder 33 by a first sealing element 33. Between the pipe bodies 15, 16 of the first heat exchanger 2a and the pipe bodies 15, 16 of the second heat exchanger 2b, there is another sealing element 36, and this sequence of pipe bodies 15, 16 and sealing elements 36 continues to the last heat exchanger 2d. Between the pipe bodies 15, 16 of the fluid distributor 11 and fluid collector 12 of the last heat exchanger 2a and the rear housing part 34, there is another sealing element 36. This sequence is particularly well illustrated in Fig. 5.

[0049] The sealing elements 36 form a holding device 5 by being slightly compressed and / or having a high coefficient of friction when the housing back part 34 is mounted, so that they fix the heat exchangers 2a-2d in their installation position.

[0050] Between the lower edges of the heat exchangers 2a-2d and the bottom wall of the housing rear part 34 there is another, flat sealing element 37, as can be seen in Fig. 4, and also between the upper edges of the heat exchangers 2a-2d and the housing cover 35 there is another flat sealing element 37, which is not visible in the views of Figs. 3-5.

[0051] The sealing elements 36, 37 ensure that the flow path of the second fluid F2 is sealed off from the housing, so that the flow of the second fluid F2 can take place exclusively through the second fluid paths 4 of the heat exchangers 2a-2d provided for this purpose.

[0052] The cooling device 1 described above can be part of an electric charging station (not shown) for supplying a battery-electric vehicle with electrical energy.

[0053] Reference symbol list

[0054] Cooling device a Heat exchanger b Heat exchanger c Heat exchanger d Heat exchanger First fluid path Second fluid path Holding device Holding frame Pipe body Flat tube Spaces 0a End (of pipe body 7) 0b End (of pipe body 7) 1 Fluid distributor 2 Fluid collector 3 Container 4 Container 5 Pipe body 6 Pipe body 7 Receptacle 8 Recess 9 Pipe body 0 Housing 1 Frame opening 2a Support strut 2b Support strut 2c Support strut 2d Support strut 23 Conveyor device

[0055] 24 blowers

[0056] 25 carriers

[0057] 26 End frames

[0058] 27 Surroundings

[0059] 28 Connection element

[0060] 29 cases

[0061] 30 Front panel

[0062] 31 Case side panel

[0063] 32 Case side panel

[0064] Paragraph 33

[0065] 34 Case back

[0066] 35 Housing covers

[0067] 36 Sealing element

[0068] 37 Sealing element

[0069] F Conveyor direction

[0070] F1 first fluid

[0071] F2 second fluid

[0072] K Cooling medium

[0073] L air

[0074] X X-direction

[0075] Y Y-direction

[0076] Z Z-direction

Claims

Patent claims 1. Cooling device (1), in particular for an electric charging station for supplying a battery-electric vehicle with electrical energy, - with a first heat exchanger (2a) and with at least one second heat exchanger (2b-2d), each of which has at least one first fluid path (3) through which a first fluid (F1) can flow and at least one second fluid path (4) through which a second fluid (F2) can flow, wherein the two fluid paths (3, 4) are thermally connected to each other for the transfer of heat between the first fluid (F1) and the second fluid (F2), - wherein the at least two heat exchangers (2a-2d) are arranged consecutively along a Z-direction (Z), and - wherein at least one holding device (5) is arranged along the Z-direction (Z) between at least two heat exchangers (2a-2d).

2. Cooling device according to claim 1, characterized in that at least one heat exchanger (2a-2d) is attached to the holding device (5), in particular detachably or indetachably connected.

3. Cooling device according to claim 1 or 2, characterized in that, - that at least one second fluid path (4) of each heat exchanger (2a-2d) extends along the Z-direction (Z), - wherein the holding device (5) is designed as a holding frame (6) through which the second fluid (F2) can flow along the Z direction (Z).

4. Cooling device according to one of the preceding claims, characterized in that the holding device (5) is designed as a sealing element (36, 37), wherein the sealing element (36, 37) is preferably compressible and / or designed with a high coefficient of friction.

5. Cooling device according to one of the preceding claims, characterized in that at least three, preferably several, heat exchangers (2a-2d) follow one another along the Z-direction (Z), wherein a holding device (5) is arranged between two heat exchangers (2a-2d) adjacent in the Z-direction.

6. Cooling device according to one of the preceding claims, characterized in that - that at least one heat exchanger (2a-2d) has a plurality of tube bodies (7), in particular flat tubes (8), which are arranged at a distance from each other along an X-direction (X) and each define a first fluid path (3), - wherein the spaces (9) formed between the pipe bodies (7) each form a second fluid path (4), and - wherein the individual tube bodies (7) of each heat exchanger (2a-2d) extend along a Y-direction (Y) and are fluidically connected at opposite ends (1 Oa, 10b) to a common fluid distributor (11) for distributing the first fluid (F1) to the individual tube bodies (7) and to a fluid collector (12) opposite the common fluid distributor (11) in the Y-direction (Y) for collecting the first fluid (F1) after flowing through the individual tube bodies (7), and - wherein the fluid distributors (11 ) and the fluid collectors (12) of two heat exchangers (2a-2d) adjacent along the Z-direction (Z) are each located on the holding device (5) arranged between these two heat exchangers (2a-2d), preferably connected.

7. Cooling device according to claim 6, characterized in that at least one fluid distributor (11) and / or at least one fluid collector extends along the X-direction (X), comprising a container (13, 14) which is preferably designed as a pipe body (15, 16) through which the first fluid (F1) can flow along the X-direction (X), and which is at least partially mounted in a holder attached to the holding device (5) or to the holding frame (6). 19 provided receptacle (17) and is preferably attached to the receptacle (17).

8. Cooling device according to claim 7, characterized in that at least one receptacle (17) is formed as a recess (18) in the retaining frame (6) extending along the X direction (X), which is preferably complementary to the container (13, 14) or tube body (15, 16) received in the receptacle (17) or recess (18).

9. Cooling device according to one of claims 6 to 8, characterized in that at least one fluid collector (12), preferably by means of a pipe body (19), communicates fluidically with a fluid distributor (11) of a heat exchanger (2a-2d) adjacent in the Z direction (Z).

10. Cooling device according to one of the preceding claims, characterized in that the cooling device (1 ) comprises a conveying device (23), preferably a blower (24) for conveying the second fluid (F2) through the at least one second fluid path (4).

11. Cooling device according to claim 10, characterized in that the conveying device (23) or the blower (24) is designed for conveying the second fluid (F2) or the air (L) along a conveying direction (F) which runs parallel to the Z-direction (Z).

12. Electric charging station for supplying electrical energy to a vehicle with a battery-electric drive, - with a cooling circuit in which a cooling medium (K) is circulated to absorb the waste heat generated by the charging station during operation and preferably circulates during operation, and - with a cooling device (1) according to one of the preceding claims, 20 wherein the first fluid paths (3) of the at least two heat exchangers (2a-2d) are arranged in the cooling circuit such that the cooling medium (K) forms the first fluid (F1).

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