Sleeve, automotive battery cooling system and manufacturing process

Abstract

The invention relates to a sleeve for connecting and sealing two fluid-carrying components, such as pipelines, comprising two separate fastening parts, each to be assigned to one of the components, which are designed to completely encircle the respective component, wherein the sleeve is designed to establish a sealing contact with each of the components.

Description

[0001] The present invention relates to a sleeve for connecting and sealing two fluid-carrying components, such as pipelines. Furthermore, the present invention relates to a cooling system for a battery of a motor vehicle, in particular an electrically powered one, comprising such a sleeve. Furthermore, the present invention provides a method for producing such a sleeve.

[0002] When connecting fluid-carrying components, the challenge often arises of meeting the pipe's high tolerances at the interface. Especially when different tolerance levels exist between the components to be connected, conventional connectors reach their limits.

[0003] A connector is known from FR 1534902. FR 1534902 discloses a pipe connector designed as a sleeve, which has a hollow cylindrical sleeve part for mounting in an interface between the pipe ends to be connected, with a stop for the pipe ends. Furthermore, the pipe connector comprises a seal receptacle assigned to each of the pipe ends for receiving an O-ring seal.

[0004] While the manufacturability of the pipe connector according to FR 1534902 is enhanced due to its one-piece construction, this one-piece construction has proven to be disadvantageous, particularly with regard to the requirement to compensate for different tolerance levels at the pipe ends to be connected. Overall, the pipe connector designed in this way tends to leak if the pipe ends exceed a certain tolerance deviation. Furthermore, the assembly process could be improved. The O-ring seals used are at risk of being displaced or damaged during assembly.

[0005] It is an object of the present invention to overcome the disadvantages of the known prior art, in particular to provide a sleeve which is improved in its function, in particular with regard to sealing, assembly and / or area of ​​application.

[0006] The problem is solved by the subject matter of the independent claims.

[0007] According to this, a sleeve is provided for connecting and sealing two fluid-conducting components, such as pipes or fluid connection pieces, in particular cooling fluid lines. The sleeve can be used, for example, in a cooling system for a battery of a motor vehicle, in particular an electrically powered one, which comprises a supply line for supplying cooling fluid to the battery and a discharge line for discharging cooling fluid away from the battery. The supply and discharge lines can be sealed and connected by means of the sleeve according to the invention. In other words, the sleeve is designed for the sealing connection of two fluid-conducting components in order to bridge the interface resulting between the components to be connected in a fluid-tight manner.

[0008] According to a first aspect of the present invention, the sleeve comprises two separate fastening parts, each assigned to one of the components, which are each designed to encompass the respective component circumferentially. In other words, the components to be connected are inserted into the fastening parts assigned to them in the assembled or operating state, or the respective fastening parts are pushed onto the respective components. The fastening parts can have a substantially hollow-cylindrical shape. The components to be connected can extend into the inner cavity of the respective fastening parts.

[0009] The sleeve according to the first aspect of the invention is designed to establish a sealing contact with each of the components. This means that the sleeve has a sealing interface or a sealing element for each component, thus ensuring a sealing connection between the two components. Due to the multi-part design of the sleeve, in particular the provision of a fastening part for each of the fluid-carrying components, the sleeve according to the invention is particularly flexible in use and, in particular, capable of meeting the requirements with regard to different tolerance levels for the components to be connected. Consequently, the sleeve according to the invention exhibits less leakage than the prior art, particularly when the pipelines to be connected have certain tolerance differences. Furthermore, assembly is improved. Above all, the risk of damage to any seals is reduced.

[0010] In an exemplary embodiment of the sleeve according to the invention, the fastening parts are arranged at a distance from one another in their longitudinal direction. The longitudinal direction can be understood as the direction in which the components to be connected point towards one another and / or in which the fluid flows between the two components in the assembled state. If cylindrical pipes and / or hollow-cylindrical fastening parts are involved, the longitudinal direction is oriented parallel to the center axis of the pipes or the fastening parts. According to an exemplary development, the distance is adjustable. This can be achieved, for example, by a relative displacement of at least one of the fastening parts relative to the component assigned to this fastening part.

[0011] In a further exemplary embodiment of the present invention, the sleeve comprises a seal for providing a flat sealing contact with the components and / or the fastening parts. For example, the seal slides flatly on the inside of at least one of the fastening parts, at least in sections. In one exemplary embodiment, the seal is designed such that it is assigned to both fastening parts and thus to both components. In another embodiment, the seal is designed in two parts, so that one sealing part is present for each fastening part-component pair.

[0012] According to a further exemplary embodiment of the sleeve according to the invention, the sleeve comprises a support ring, in particular a seal-bearing one, which together with the seal forms a pre-assembly unit. Alternatively or additionally, the support ring can be arranged at least partially radially between the seal and the fastening parts. For example, the seal and the support ring can be firmly connected to one another, for example by form-fitting, force-fitting and / or material-fitting. According to an exemplary further development, the seal and the support ring are manufactured using a two-component injection-molding process. Furthermore, it is possible for the seal to be injection-molded onto the support ring, in particular to be encapsulated around it. The seal and the support ring can have coordinated anchoring structures for secure attachment to one another.

[0013] In a further exemplary embodiment of the sleeve according to the invention, the fastening parts and the support ring each have at least one coordinated locking element for engaging with one another and establishing a defined mounting position relative to one another. Thus, the support ring can have at least two locking elements, each associated with one of the fastening parts. According to an exemplary development, the locking elements on the fastening part side are designed as projections, and the locking elements on the support ring side are designed as recesses. In the engaged state, the locking projections engage in the locking recesses. This can, for example, involve a locking or clipping connection.In a further exemplary embodiment, the fastening parts and / or the support ring have a plurality of locking elements arranged at a particularly uniform distance from one another in the longitudinal direction, with each locking element defining a predefined mounting position. This provides multiple mounting positions. Depending on the ambient conditions and available installation space, the components can be connected to one another by adopting different locking positions.

[0014] According to a further exemplary embodiment of the sleeve according to the invention, the sleeve comprises a seal, wherein at least one fastening part has a receptacle for the seal that is open in the longitudinal direction of extent, in order to enable the seal and fastening part to be pushed onto one another in the longitudinal direction of extent. The receptacle can have a stop for the seal, beyond which the seal cannot be inserted further. For example, the open receptacle of the fastening part is open in the direction of the opposite fastening part or the further fluid-carrying component. In a further exemplary development of the sleeve according to the invention, the seal is received in the receptacle and held by the support ring in such a way that the seal is compressed in the longitudinal direction of extent.The axial compression of the seal can be accompanied by radial expansion, resulting in a radial improvement that can provide improved sealing between the components.

[0015] In a further exemplary embodiment of the present invention, the seal and the receptacle, in particular an inner receptacle leg of the receptacle, are shaped to match one another in such a way that the seal locks within the receptacle, in particular by forming an undercut. This provides a type of captive seal within the receptacle. The cutout is formed with respect to the longitudinal direction and can serve to prevent the seal and fastening part from moving apart in the longitudinal direction.

[0016] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a sleeve is provided for connecting and sealing two fluid-conducting components, such as pipelines or fluid connection pieces, in particular cooling fluid lines. The sleeve can be used, for example, in a cooling system for a battery of a motor vehicle, in particular an electrically powered one, which comprises a supply line for supplying cooling fluid to the battery and a discharge line for discharging cooling fluid away from the battery. The supply and discharge lines can be sealed and connected by means of the sleeve according to the invention. In other words, the sleeve is designed for the sealing connection of two fluid-conducting components in order to bridge the interface resulting between the components to be connected in a fluid-tight manner.

[0017] The sleeve comprises a fastening part for circumferentially encompassing the components. For example, the fastening part can be formed from a single piece and designed to encompass both components to be connected. However, the fastening part can also consist of two separate sections, each assigned to one of the components. In other words, the components to be connected are pushed into their respective assigned fastening parts during assembly or operation, or the respective fastening parts are pushed onto the respective components. The fastening parts can have a substantially hollow-cylindrical shape. The components to be connected can extend into the inner cavity of the respective fastening parts.

[0018] The sleeve also includes a gasket to seal both components against the fastening part. This means that the gasket has and forms a sealing interface for each component, ensuring a tight connection between the two components.

[0019] The sleeve also has a support ring manufactured separately from the fastening part, with a positioning stop projecting radially inward for determining a final assembly position for the components. The support ring can be designed to support the seal. The support ring and the seal can form a pre-assembly unit. Alternatively or additionally, the support ring can be arranged at least partially radially between the seal and the fastening parts. For example, the seal and the support ring can be firmly connected to one another, for example by form-fitting, force-fitting and / or material-fitting. According to an exemplary development, the seal and the support ring are manufactured using a two-component injection-molding process. Furthermore, it is possible for the seal to be injection-molded onto the support ring, in particular by injection-molding around it.The seal and the support ring can have coordinated anchoring structures for secure attachment to each other. The presence of an additional support ring facilitates assembly, for example, through the provision of a pre-assembly unit, allowing for the simple use of manufacturing processes that produce cost-effective and flexible structures. Furthermore, this allows for better scalability of the dimensions of the individual components and easier adaptation to environmental conditions.

[0020] In an exemplary embodiment of the sleeve according to the invention, the support ring has a particularly annular stop for the fastening parts. For example, the stop is designed to limit relative movement between the fastening parts and the support ring in their longitudinal direction. The stop can define a predefined final assembly position, making assembly of the sleeve easy even for inexperienced operators.

[0021] According to an exemplary development of the sleeve according to the invention, the support ring carries the seal, forms a pre-assembly unit together with the seal and / or is arranged at least partially radially between the seal and the fastening part. For example, the seal and the support ring can be firmly connected to one another, for example by form-fitting, force-fitting and / or material-locking. According to an exemplary development, the seal and the support ring are manufactured using a two-component injection-molding process. Furthermore, it is possible for the seal to be injection-molded onto the support ring, in particular to be overmolded around it. The seal and the support ring can have coordinated anchoring structures for secure attachment to one another. The support ring can also be designed to impart rigidity to the seal at least in sections. For example, the support ring is made of a harder material than the seal.

[0022] According to an unprecedented development of the sleeve according to the invention, the positioning stop extends through the seal. In other words, the support ring can extend radially outward relative to the seal, and the positioning stop can extend radially inward through the seal.

[0023] In a further exemplary embodiment of the present invention, the seal has at least one radially inwardly projecting, in particular circumferential, sealing lip, the radial wall thickness of which is at least twice as great as an adjacent sealing section. The thickly dimensioned sealing lip reinforces the sealing effect and / or enables simpler and better tolerance compensation. Alternatively or additionally, the sealing lip can be designed to deform elastically as a result of radial compression and / or a load acting on the sleeve from the outside in the longitudinal direction. The sealing lip can thus deflect in the longitudinal axis direction, i.e. axially, and thus compensate for tolerances and react to relative movements, in particular as a result of incoming external loads.

[0024] According to another exemplary embodiment of the sleeve according to the invention, the seal has an external recess for receiving the support ring. For example, a passage for the positioning lug is provided at the base of the recess. This results in a particularly compact sleeve, in particular a particularly compact pre-assembly unit comprising the support ring and seal.

[0025] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a cooling system for a battery of a motor vehicle, in particular an electrically powered one, is provided. The cooling system comprises a supply line for supplying cooling fluid to the battery, a discharge line for discharging cooling fluid away from the battery, and a sleeve designed according to one of the preceding aspects and / or exemplary embodiments for sealing and connecting the supply and discharge lines.

[0026] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a method is provided for producing a sleeve, in particular designed according to the invention, for connecting and sealing two fluid-carrying components, such as pipelines, which has a fastening part for circumferentially encompassing the components, a seal for sealing both components with respect to the fastening part and a support ring with a radially inwardly projecting stop for the components.

[0027] According to the method according to the invention, the seal is connected to the support ring by overmolding it. This creates a pre-assembled unit. Furthermore, the fastening part, in particular both fastening parts, are joined to the seal-support ring assembly.

[0028] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a method is provided for producing a sleeve, in particular designed according to the invention, for connecting and sealing two fluid-carrying components, such as pipelines, which has a fastening part for circumferentially encompassing the components, a seal for sealing both components with respect to the fastening part and a support ring with a radially inwardly projecting stop for the components.

[0029] According to the further method according to the invention, the seal and the support ring are manufactured using a two-component injection molding process and are joined together to the fastening part using an assembly injection molding process.

[0030] In the following, further properties, features and advantages of the invention will become clear by describing preferred embodiments of the invention with reference to the accompanying exemplary drawings, in which: Fig. 1 is a schematic view of a battery system of a motor vehicle with two sleeves according to the invention; Fig. 2 a perspective view of a first exemplary embodiment of a sleeve according to the invention; Fig. 3 the sleeve Fig. 2 in a sectional view; Fig. 4 the sleeve from the Fig. 2 and Fig. 3 with two pipelines to be connected in a sectional view; Fig. 5 is a perspective view of a second exemplary embodiment of a sleeve according to the invention; and Fig. 6 the sleeve Fig. 5 in a partially sectioned view.

[0031] In the following description of exemplary embodiments of the present invention, a sleeve according to the invention is generally designated by the reference numeral 1 and a cooling system according to the invention is generally designated by the reference numeral 100.

[0032] A sleeve according to the invention can be used, for example, in a battery system or cooling system of a particularly electrically operated motor vehicle for connecting and sealing coolant-carrying lines, which in Fig. 1 is shown schematically. The cooling system 100 in Fig. 1 comprises a plurality of battery cells 101, in particular round cells, which are arranged in several rows 103, 105, 107, 109. A total of up to 1200 battery cells can be provided in a cooling system. Between the rows 103, 105, 107, 109, Fig. 1, a coolant line 111, 113, 115 is arranged in each case in order to be able to reliably cool the battery cells 101 during operation of the motor vehicle. For this purpose, a supply line 117 is also provided for supplying the coolant to the battery cells 101 and a discharge line 119 is provided for discharging the coolant from the battery cells 101. Depending on how much power the battery system is to generate, individual coolant lines can be arranged in Fig. 1, for example, the coolant line 113, can be replaced by spacers that do not carry coolant. The spacers can be made of plastic, for example. Between two adjacent coolant lines 111, 113, 115, as well as between the supply line 117 and the discharge line 119, a sleeve 1 according to the invention is provided in each case to connect and seal the coolant lines. Fig. 1 shows three sleeves 1 according to the invention as an example, but a total of up to 80 sleeves 1 according to the invention can be provided in a cooling system 100.

[0033] In Fig. 2 shows a first exemplary embodiment of a sleeve 1 according to the invention in a perspective view. Fig. 3 and Fig. 4 show the sleeve 1 from Fig. 2 each in a sectional view, where in Fig. 4 additionally two fluid-carrying components 3, 5 to be connected to the sleeve 1 are shown in the form of pipes.

[0034] The sleeve 1 according to the invention comprises two separate fastening parts 7, 9, each of which is assigned to one of the components 3, 5. In particular in Fig. 4 it can be seen that the fastening part 7 is assigned to the component 3 and the fastening part 9 is assigned to the component 5. The fastening parts 7, 9 each encompass the component 3, 5 assigned to them circumferentially in order to form a sealing contact with the respective component 3, 5. The sleeve 1 also comprises a seal 11, which provides a flat sealing contact with the components 3, 5 and the fastening parts 7, 9. For this purpose, the seal 11 is arranged at least in sections in the radial direction R between the fastening parts 7, 9 and the components 3, 5 assigned to them. In the embodiment in the Fig. 2 to 4, the seal 11 and the fastening parts 7, 9 are rotationally symmetrical and the seal 11 lies with an outer side 13 of the seal 11 flat against an inner side 15, 17 of the fastening parts 7, 9 and thereby lines the fastening parts 7, 9 on the inside at least in sections.

[0035] In addition, the sleeve 1 comprises a support ring 19, which in the version in the Fig. 2 to 4 is also rotationally shaped and carries the seal 11. For this purpose, a recess 21 is formed on the seal 11, arranged centrally in the longitudinal direction L, in which the support ring 19 is partially received.

[0036] In this design, the sleeve 1 comprises four components in total: the two fastening parts 7, 9, the seal 11 and the support ring 19. The two fastening parts 7, 9 are designed the same in this design, but can also be designed differently in other designs in order to be able to connect and seal different components 3, 5.

[0037] During assembly of the sleeve 1, the support ring 19 and the seal 11 can form a pre-assembly unit in which the seal 11 and the support ring 19 are already connected to one another when the fastening parts 7, 9 and the components 3, 5 are assembled. For example, the support ring 19 can be manufactured using an injection molding process, and then the seal 11 can be molded onto the support ring 19 or the support ring 19 can be overmolded with the seal 11. In the next assembly step, the fastening parts 7, 9 can then be mounted or joined to the pre-assembly unit comprising the support ring 19 and the seal 11. For example, the fastening parts can be pushed onto the seal 11 and the support ring 19.Alternatively, the support ring 19 and the seal 11 can also be manufactured using a two-component injection molding process, and / or the fastening parts 7, 9 can be connected to the pre-assembly unit consisting of the support ring 19 and the seal 11 using an assembly injection molding process. To ensure a defined assembly position of the fastening parts 7, 9, the individual components can have different structural features.

[0038] The fastening parts 7, 9 each have a locking element 23 on their inner side 15, 17, which are designed as projections and protrude inwards in the radial direction R from the inner side 15, 17. The support ring 19 has on its outer side 27 a locking element 25 which is matched to the locking elements 23 and is designed as a recess. In the assembled state, the locking elements 23, 25 engage with each other and thus establish a defined mounting position between the fastening parts 7, 9 and the support ring 19. In the embodiment in the Fig. 2 to 4, one locking element 23 is provided on each of the fastening parts 7, 9 by way of example, but it is clear that in other embodiments, several locking elements 23, in particular arranged at a uniform distance from one another, can be provided on one or both fastening parts 7, 9.

[0039] In addition, the support ring 19 has an annular contact stop 43 projecting outwards in the radial direction R. In the embodiment in the Fig. 2 to 4, the annular stop has a rectangular cross-section. In the final assembly position, the fastening parts 7, 9 rest against the annular stop 43, so that relative movement between the fastening parts 7, 9 and the support ring 19 in the longitudinal direction L is limited. It should be understood that the annular stop can be provided alternatively or in addition to the locking elements 23, 25.

[0040] In order to accommodate the seal 11, the fastening parts 7, 9 each have a receptacle 29, 31 for the seal 11 which is open in the longitudinal direction L and which, when the sleeve 1 is in the assembled state, are arranged opposite one another and enclose the seal 11 in the longitudinal direction L. This means that the fastening parts 7, 9 can be pushed onto the seal 11 from both sides during assembly of the sleeve 1. The seal 11 can preferably be compressed between the receptacles 29, 31 in the longitudinal direction L. For this purpose, the seal 11 is held in the radial direction R by the support ring 19 so that the material of the seal 11 cannot escape in the radial direction R and a stronger compression is achieved in the longitudinal direction L. This enables a particularly good and reliable seal.

[0041] The seal 11 has in the version in the Fig. 2 to 4 also have, at both ends in the longitudinal direction L, a sealing projection 33, 35 that is shaped to fit the respective receptacle 29, 31. This sealing projection rests flat against a receptacle leg 37, 39 of the respective receptacle 29, 31, which forms an undercut in each case into which the seal 11 or the sealing projections 33, 35 engage. This allows the fastening parts 7, 9 to be firmly connected to the seal 11, and a defined mounting position between the fastening parts 7, 9 and the seal 11 can be ensured.

[0042] To determine the final assembly position of the components 3, 5, the support ring 19 has a positioning stop 41 projecting inward in the radial direction R. This protrudes through the seal 11; in other words, the positioning stop 41 projects inward beyond the seal 11 in the radial direction R. For this purpose, a passage for the positioning stop 41 can be provided in the seal 11, in particular in a recess base of the recess 21 for receiving the support ring 19.

[0043] To seal the components 3, 5, the seal 11 has a circumferential sealing lip 45, 47 projecting inward in the radial direction R. In the assembled state, these sealing lips are compressed or pressed by the components 3, 5 in the radial direction R, thereby elastically deforming and, at least in sections, resting flat against the outer sides 49, 51 of the components 3, 5, thereby sealing them. The radial wall thickness of the sealing lips 45, 47 is at least twice as large as the adjacent sealing sections 53, 55 of the seal 11.

[0044] In the Fig. 5 and Fig. 6 shows a second exemplary embodiment of a sleeve 1 according to the invention, which differs from the embodiment in the Fig. 2 to 4 in that the fastening parts 7, 9 are arranged at a greater distance from each other in the longitudinal direction L. Such a sleeve 1 can be used, for example, when in the cooling system 100 in Fig. 1 spacers can be used instead of coolant lines, which can be bridged with a longer sleeve 1. In this design, the seal 11 consists of two seal halves 12, 14, which are spaced apart from each other in the longitudinal direction L. The distance in the longitudinal direction L between the seal halves 12, 14 or the components 3, 5 is determined by a Fig. 2 to 4 in the longitudinal direction L significantly longer support ring 19, which has a tubular central area 57 between the two sealing halves 12, 14. Otherwise, the sleeve 1 in the Fig. 5 and Fig. 6 essentially the one in the Fig. 2 to 4.

[0045] The features disclosed in the above description, the figures and the claims may be important both individually and in any combination for the realization of the invention in the various embodiments. List of reference symbols 1 sleeve 100 Cooling system 3, 5 fluid-carrying component 7, 9 Fastening part 11 Seal 12, 14 Seal half 13 Outside seal 15, 17 Inside seal halves 19 Support ring 21 Deepening 23, 25 locking element 27 Outside support ring 29, 31 recording 33, 35 sealing projection 37, 39 receiving legs 41 Positioning stop 43 ring-shaped stop 45, 47 sealing lip 49, 51 Outside of fluid-carrying components 53, 55 Sealing section 57 tubular central area 101 Battery cell 103, 105, 107, 109 row 111, 113, 115 coolant line 117 Supply line 119 Discharge line R Radial direction L longitudinal direction QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] FR 1534902 [0003, 0004]

Claims

[1] Sleeve for connecting and sealing two fluid-carrying components, such as pipelines, comprising two separate fastening parts, each assigned to one of the components, which are designed to encompass the respective component, wherein the sleeve is designed to establish a sealing contact with each of the components. [2] Sleeve according to claim 1, wherein the fastening parts are arranged at a distance from one another in their longitudinal direction, wherein in particular the distance is adjustable. [3] Sleeve according to claim 1 or 2, further comprising a seal for providing a planar sealing contact with the components and / or the fastening parts, wherein in particular the seal lines at least one of the fastening parts on the inside in a planar manner at least in sections. [4] Sleeve according to one of the preceding claims, further comprising a support ring carrying in particular a seal, which together with the seal forms a pre-assembly unit and / or is arranged at least in sections radially between the seal and the fastening parts. [5] Sleeve according to one of the preceding claims, wherein the fastening parts and the support ring each have at least one mutually coordinated locking element for engaging with one another and fixing a defined mounting position relative to one another, wherein in particular the locking elements on the fastening part side are designed as projections and the locking elements on the support ring side are designed as depressions and / or wherein the fastening parts and / or the support ring have a plurality of locking elements arranged at a particularly uniform distance from one another in the longitudinal direction. [6] Sleeve according to one of the preceding claims, further comprising a seal, wherein at least one fastening part has a receptacle for the seal which is open in the longitudinal direction of extension in order to enable the seal and fastening part to be pushed onto one another in the longitudinal direction of extension, wherein in particular the seal is received in the receptacle and held by the support ring in such a way that the seal is compressed in the longitudinal direction of extension. [7] Sleeve according to claim 6, wherein the seal and the receptacle, in particular an inner receiving leg of the receptacle, are shaped to match one another in such a way that the seal locks within the receptacle, in particular by forming an undercut. [8] Sleeve, in particular according to one of the preceding claims, for connecting and sealing two fluid-carrying components, such as pipelines, comprising a fastening part for circumferentially encompassing the components, a seal for sealing both components with respect to the fastening part and a support ring manufactured separately from the fastening part with a radially inwardly projecting positioning stop for determining an assembly end position for the components. [9] Sleeve according to one of the preceding claims, wherein the support ring has a particularly annular abutment stop for the fastening parts, wherein in particular the abutment stop is designed to limit a relative movement between the fastening parts and the support ring in their longitudinal direction. [10] Sleeve according to claim 8 or 9, wherein the support ring carries the seal, forms a pre-assembly unit together with the seal and / or is arranged at least in sections radially between the seal and the fastening part. [11] Sleeve according to one of claims 8 to 10, wherein the positioning stop extends through the seal. [12] Sleeve according to one of the preceding claims, wherein the seal has at least one radially inwardly projecting, in particular circumferential, sealing lip, the radial wall thickness of which is at least twice as large as an adjacent sealing section and / or which is designed to deform elastically as a result of radial compression and / or a load acting on the sleeve from the outside in the longitudinal direction. [13] Sleeve according to one of the preceding claims, wherein the seal has an external recess for receiving the support ring, wherein a passage for the positioning lug is provided in particular at the base of the recess. [14] Cooling system for a battery of a motor vehicle, in particular an electrically operated one, comprising a supply line for supplying cooling fluid to the battery, a discharge line for discharging cooling fluid away from the battery and a sleeve designed according to one of the preceding claims for sealing and connecting the supply and discharge lines. [15] Method for producing a sleeve, in particular designed according to one of claims 1 to 13, for connecting and sealing two fluid-carrying components, such as pipelines, which has a fastening part for circumferentially encompassing the components, a seal for sealing both components with respect to the fastening part and a support ring with a radially inwardly projecting stop for the components, in which the seal is connected to the support ring by overmolding the latter and the fastening part is joined to the seal-support ring arrangement. [16] Method for producing a sleeve, in particular designed according to one of claims 1 to 13, for connecting and sealing two fluid-carrying components, such as pipelines, which has a fastening part for circumferentially encompassing the components, a seal for sealing both components with respect to the fastening part and a support ring with a radially inwardly projecting stop for the components, in which the seal and the support ring are produced by a two-component injection molding process and are joined together to the fastening part in an assembly injection molding process.

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