Cold plate connector, battery pack assembly, and vehicle

Abstract

The application relates to the technical field of battery manufacturing, and provides a cold plate connecting piece, a battery pack assembly and a vehicle, and at least solves the problem of high assembly difficulty of the cold plate connecting piece. The cold plate connecting piece comprises a first pipeline, a second pipeline, an external joint and an elastic sealing piece. The elastic sealing piece is located between the first pipeline and the second pipeline and is connected with the first pipeline and the second pipeline. One of the first pipeline and the second pipeline can move relative to the other along a second pipeline path. During installation of the cold plate connecting piece, an error in installation of the cold plate can be converted into a lateral force on the first pipeline or the second pipeline, and then converted into deformation of the elastic piece. In this way, the installation precision and assembly difficulty of the cold plate connecting piece can be reduced, and the assembly efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to cold plate connectors, battery pack assemblies, and vehicles. Background Technology

[0002] In order to efficiently dissipate the heat generated by the vehicle battery during charging and discharging and maintain its reasonable operating temperature, cooling channels are set in the cold plates above and below the battery cells to cool the battery cells.

[0003] In the battery manufacturing process, the battery cell is first sandwiched between two cold plates with internal cooling channels, providing support and fixation. Then, cold plate connectors are used to connect the cooling channels to the vehicle's cooling system.

[0004] In related technologies, cold plate connectors require high installation precision and present significant assembly challenges. Utility Model Content

[0005] To address the aforementioned technical issues, this application provides a cold plate connector, a battery pack assembly, and a vehicle, which can reduce assembly precision requirements.

[0006] In a first aspect, a cold-rolled plate connector is provided, comprising a first pipe, a second pipe, an external connector, and a resilient seal. The first pipe has two opposite ends connected along a first direction. The second pipe has two opposite ends connected along the first direction, and at least a portion of the second pipe is fitted around the periphery of the first pipe. The external connector is disposed around the periphery of the second pipe and communicates with either the first or the second pipe. The resilient seal is located between the first and second pipes and is connected to both. One of the first and second pipes is radially movable relative to the other along the second pipe. The first direction is the axial direction of the first pipe.

[0007] Due to manufacturing and assembly tolerances, the cold plate's position may have errors after it is fixed to the battery cell. Consequently, during the installation of the cold plate connector, this installation error translates into a lateral force on either the first or second conduit. Because an elastic seal is installed between the first and second conduits, the cold plate's positional error is converted into deformation of the elastic seal. Under the action of the elastic seal, one side is compressed while the other side is slightly relaxed, allowing one of the first or second conduits to move radially relative to the other until both ends of the cold plate connector are aligned with the two cold plates. Throughout this process, the sealing effect of the elastic seal is maintained. This reduces the installation precision required for the cold plate connector, lowers assembly difficulty, improves assembly efficiency, increases product yield, and minimizes losses caused by errors.

[0008] In some embodiments of this application, the resilient seal includes a connecting portion and an elastic portion. The connecting portion is connected to a second conduit. The elastic portion is located on the side of the connecting portion opposite to the second conduit. The elastic portion includes a first end and a second end opposite to each other. The first end is connected to the connecting portion, and the second end is spaced apart from the connecting portion and connected to the first conduit. The second end is movable toward or away from the connecting portion.

[0009] In some embodiments of this application, the first pipeline and the second pipeline are slidably connected along a first direction.

[0010] In some embodiments of this application, the first pipe, the second pipe, and the external connector are made of plastic, and the flame retardant rating of the plastic meets the V0 level.

[0011] In some embodiments of this application, the cold plate connector further includes a first adapter and a first seal, the first adapter being detachably connected to a second conduit. The first adapter is adapted to connect an external cold plate. The first seal is disposed between the first adapter and the second conduit. And / or the cold plate connector further includes a second adapter and a second seal, the second adapter being detachably connected to the first conduit. The second adapter is adapted to connect an external cold plate. The second seal is disposed between the second adapter and the first conduit.

[0012] In some embodiments of this application, the cold plate connector further includes a first positioning member and a first connecting member. The first positioning member is adapted to connect to an external cold plate. The first connecting member is disposed on the periphery of the first pipeline and connected to the first pipeline, and the first connecting member is detachably connected to the first positioning member. And / or the cold plate connector further includes a second positioning member and a second connecting member. The second positioning member is adapted to connect to an external cold plate. The second connecting member is disposed on the periphery of the second pipeline and connected to the second pipeline, and the second connecting member is detachably connected to the second positioning member.

[0013] In a second aspect, a battery pack assembly is provided, including a cold plate connector and a cold plate as provided in any embodiment of the first aspect. The cold plate has cooling channels disposed therein, and the cooling channels are in communication with the cold plate connector.

[0014] In some embodiments of this application, the cold plate includes a first cold plate and a second cold plate, which are spaced apart. A cold plate connector is disposed between the first cold plate and the second cold plate.

[0015] In some embodiments of this application, the cold plate connector includes an inlet connector and an outlet connector. A first pipe of the inlet connector is connected to the inlet end of the first cold plate, and a second pipe of the inlet connector is connected to the inlet end of the second cold plate. A first pipe of the outlet connector is connected to the outlet end of the first cold plate, and a second pipe of the outlet connector is connected to the outlet end of the second cold plate.

[0016] Thirdly, a vehicle is provided, the vehicle including the battery pack assembly provided in any embodiment of the second aspect.

[0017] It should be noted that the technical effects of any of the implementation methods in the second, third, and fourth aspects can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the battery pack assembly structure according to an embodiment of this application; Figure 2 This is a schematic diagram of the cold plate connector according to an embodiment of this application; Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction; Figure 4 for Figure 3 Enlarged view of point C in the middle; Figure 5 for Figure 2 A schematic diagram of the cross-section along the BB direction.

[0021] Explanation of reference numerals in the attached figures: 100-Battery pack assembly; 10-Cold plate; 20-Cold plate connector; 01-Cooling channel; 02-First cold plate; 03-Second cold plate; 04-Inlet connector; 05-Outlet connector; 1-First pipeline; 2-Second pipeline; 21-Limiting surface; 3-External connector; 4-Elastic seal; 41-Connecting part; 42-Elastic part; 421-First end; 422-Second end; 5-End cap; 6-First adapter; 61-First seal; 7-First positioning part; 71-First connector. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0025] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] The present application will now be described in detail. Before describing the embodiments of the present application, the logic behind the technical problem arising from the present application will be explained first.

[0030] When installing a battery pack, the battery cells are sandwiched between cold plates. The cold plates on both sides of the cells must not only align with their positions for proper cell installation, but also be precisely positioned so that the cooling channels on the cold plates are aligned for the installation of the cold plate connectors. Otherwise, the connectors cannot be installed. Therefore, high precision is required for the installation of the cold plate connectors. Errors in the installation of the cold plates and battery cells result in defective products, and rework leads to a waste of time and energy.

[0031] The embodiments of this application are described below.

[0032] like Figure 1 As shown, this application provides a vehicle. The vehicle includes a battery pack assembly 100 or includes a cold plate connector 20.

[0033] In this application embodiment, the vehicle can be a sedan, an off-road vehicle, a multi-purpose vehicle (MPV), or other types of vehicles. Furthermore, the power source of the vehicle in this application embodiment is at least electricity; for example, the vehicle in this application embodiment can be an electric vehicle, a hybrid vehicle using electricity and fuel, or a hybrid electric vehicle using electricity and combustible gas.

[0034] This application also provides a battery pack assembly 100, including a cold plate connector 20 and a cold plate 10.

[0035] The battery pack assembly 100 can be used in any electrical device. That is, the battery pack assembly 100 can be used in electronic products, vehicles, power tools, home appliances, portable devices, outdoor equipment, medical devices, etc.

[0036] See Figure 1 , Figure 2 and Figure 3 As shown. This application also provides a cold plate connector 20, which includes a first pipe 1, a second pipe 2, an external connector 3, and an elastic seal 4. The first pipe 1 is connected at both ends opposite to each other along a first direction Z. The second pipe 2 is connected at both ends opposite to each other along the first direction Z, and at least a portion of the second pipe 2 is sleeved around the periphery of the first pipe 1. The external connector 3 is disposed around the periphery of the second pipe 2 and is connected to either the first pipe 1 or the second pipe 2. The elastic seal 4 is located between the first pipe 1 and the second pipe 2 and is connected to both the first pipe 1 and the second pipe 2. One of the first pipe 1 and the second pipe 2 is radially movable relative to the other along the second pipe 2. The first direction Z is the axial direction of the first pipe 1.

[0037] Because an elastic seal 4 is installed between the first pipe 1 and the second pipe 2, the positional error of the cold plate 10 is converted into deformation of the elastic seal 4. Under the action of the elastic seal 4, one side of the elastic seal 4 is compressed, while the other side is slightly relaxed. In this way, one of the first pipe 1 and the second pipe 2 can move radially relative to the other along the second pipe 2 until both ends of the cold plate connector 20 are aligned with the two cold plates 10 respectively. During this process, the sealing effect of the elastic seal 4 is maintained. In this way, the installation accuracy of the cold plate connector 20 can be reduced, the assembly difficulty can be reduced, the assembly efficiency can be improved, the product yield can be increased, and the losses caused by errors can be reduced.

[0038] The first pipe 1 connects to its two opposite ends along a first direction Z, where Z is the axial direction of the first pipe 1. This refers to two pipe openings in opposite directions along the axial direction of the first pipe 1, one opening facing one direction and the other facing the opposite direction. These two openings are connected to each other so that coolant can flow in from one and out from the other.

[0039] The second pipeline 2 is connected to both ends opposite to each other in the first direction Z, that is, the second pipeline 2 is set up in the same way as the first pipeline 1.

[0040] The first pipe 1 and the second pipe 2 can be straight pipes, bends, or Z-shaped pipes.

[0041] The phrase "at least a portion of the second conduit 2 is sleeved around the periphery of the first conduit 1" means that at least a portion of the second conduit 2 along the first direction Z is sleeved outside the first conduit 1. For example, the first conduit 1 and the second conduit 2 can be coaxially arranged or off-axis arranged.

[0042] When the second pipe 2 is fitted onto the first pipe 1, the end of the second pipe 2 opposite to the first pipe 1 is connected to the end of the first pipe 1 opposite to the first pipe 1, so that the refrigerant can flow from one end to the other.

[0043] The external connector 3 being located on the periphery of the second pipe 2 means that the external connector 3 is located on the periphery of the outer wall of the second pipe 2. Since the second pipe 2 is sleeved on the first pipe 1, the external connector 3 being located on the periphery of the second pipe 2 also means that the external connector 3 is located on the periphery of the first pipe 1.

[0044] The external connector 3 is adapted to introduce refrigerant into the cold plate connector 20. In this application, the external connector 3 is adapted to connect to the vehicle's cooling circulation system.

[0045] The elastic seal 4 is located between the first pipeline 1 and the second pipeline 2, and is connected to the first pipeline 1 and the second pipeline 2. The elastic seal 4 has a sealing function.

[0046] When there is an error in the assembly of the cold plate 10, the first pipe 1 and the second pipe 2 can be displaced relative to each other. The displacement between the first pipe 1 and the second pipe 2 cancels out the assembly error of the cold plate 10, thereby allowing the cold plate connector 20 to be installed.

[0047] For example, the relative displacement of the first pipe 1 and the second pipe 2 is greater than or equal to 2 mm. Specifically, taking the example of the first pipe 1 being stationary while the second pipe 2 can undergo relative displacement, the displacement of the second pipe 2 is greater than or equal to 2 mm. Alternatively, taking the example of the second pipe 2 being stationary while the first pipe 1 can undergo relative displacement, the displacement of the first pipe 1 is greater than or equal to 2 mm.

[0048] For example, the relative displacement of the first pipe 1 and the second pipe 2 can be at least one of 2mm, 3mm, 4mm, 5mm, and 10mm.

[0049] One of the first conduit 1 and the second conduit 2 may move radially relative to the other along the second conduit 2. The movement of the first conduit 1 and the second conduit 2 is relative. The radial direction of the second conduit 2 refers to its radius.

[0050] This configuration increases the flexibility of the relative movement of the first pipe 1 and the second pipe 2. That is, during the assembly of the cold plate 10, there may be assembly errors in any direction. This configuration of the first pipe 1 and the second pipe 2 increases their adaptability so that they can be connected to the cold plate 10.

[0051] See also Figure 3 and Figure 4 As shown. In some embodiments of this application, the resilient seal 4 includes a connecting portion 41 and an elastic portion 42. The connecting portion 41 is connected to the second conduit 2. The elastic portion 42 is located on the side of the connecting portion 41 opposite to the second conduit 2. The elastic portion 42 includes an opposing first end 421 and a second end 422. The first end 421 is connected to the connecting portion 41, and the second end 422 is spaced apart from the connecting portion 41 and connected to the first conduit 1. The second end 422 is movable toward or away from the connecting portion 41.

[0052] The elastic part 42 is located on the side of the connecting part 41 that is away from the second pipe 2. That is, the connecting part 41 is located in the middle, and the elastic part 42 and the second pipe 2 are positioned at intervals relative to the connecting part 41.

[0053] The connecting part 41 provides a static seal, and the elastic part 42 provides a dynamic seal and displacement compensation. The elastic part 42 is connected to the first pipeline 1 and allows the first pipeline 1 to move. Conversely, allowing the first pipeline 1 to move is equivalent to allowing the second pipeline 2 to move.

[0054] With the above configuration, the first end 421 of the elastic part 42 is fixed and the second end 422 is free, allowing the elastic part 42 to move towards or away from the connecting part 41 when subjected to force. When the distance between the first pipe 1 and the second pipe 2 on one side decreases, the elastic part 42 undergoes further elastic deformation under compression, causing the second end 422 to move towards the connecting part 41.

[0055] On the opposite side, the distance between the first pipe 1 and the second pipe 2 increases accordingly. Under the action of the elastic restoring force of the elastic part 42, the second end 422 moves away from the connecting part 41, that is, moves towards the first pipe 1.

[0056] In this way, the assembly error of the cold plate 10 is converted into the deformation of the elastic element, maintaining the seal between the first pipe 1 and the second pipe 2, and also facilitating the installation of the cold plate connector 20.

[0057] It should be noted that during installation, the elastic seal 4 is press-fitted with both the first pipe 1 and the second pipe 2. This improves the sealing performance between the first pipe 1 and the second pipe 2.

[0058] The connecting part 41 is detachably connected to the second pipeline 2. Exemplary connection methods between the connecting part 41 and the second pipeline 2 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, and adhesive bonding. This facilitates the fixing of the elastic seal 4 and also facilitates the replacement of the elastic seal 4.

[0059] See also Figure 4 As shown. In some embodiments of this application, the cold plate connector 20 further includes an end cap 5, which is located on the periphery of the first pipe 1 and connected to the end of the second pipe 2 facing the first pipe 1. The distance between the end cap 5 and the first pipe 1 is smaller than the distance between the second pipe 2 and the first pipe 1.

[0060] The end cap 5 has a limiting function on the elastic seal 4, preventing the elastic seal 4 from falling out of the gap between the first pipeline 1 and the second pipeline 2.

[0061] The end cap 5 is detachably connected to the second pipeline 2. Specific connection methods between the end cap 5 and the second pipeline 2 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, and adhesive bonding. This facilitates adjustment of the position of the elastic seal 4 during installation by removing the end cap 5. During use, when the elastic seal 4 is damaged or aged, it can be quickly replaced by removing the end cap 5.

[0062] In some embodiments of this application, a limiting surface 21 is provided inside the second pipeline 2. The limiting surface 21 is located on the side of the connecting part 41 away from the end cover 5 and abuts against the connecting part 41.

[0063] Thus, the end cap 5 and the limiting surface 21 can limit the elastic connector in the first direction Z, reducing the shaking and displacement of the elastic connector. This improves the sealing performance of the connection between the first pipeline 1 and the second pipeline 2.

[0064] In some embodiments of this application, the connecting portion 41 is connected to the first conduit 1. The elastic portion 42 is located on the side of the connecting portion 41 opposite to the first conduit 1. The elastic portion 42 includes an opposing first end 421 and a second end 422. The first end 421 is connected to the connecting portion 41, and the second end 422 is spaced apart from the connecting portion 41 and connected to the second conduit 2. The second end 422 is movable towards or away from the connecting portion 41.

[0065] See also Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, the first pipe 1 and the second pipe 2 are slidably connected along the first direction Z.

[0066] For example, the first pipe 1 and the second pipe 2 are slidably connected by an elastic connector so that the first pipe 1...

[0067] During installation, the installer can first easily secure the retracted connector to one side of the cold plate 10. Because the connector is shorter at this point, it has sufficient space to move and fine-tune near the other side of the cold plate 10 to ensure precise alignment with the already secured side. After securing one side, the connector is then slid out to align with the other side of the cold plate 10.

[0068] In this way, the installation of the cold plate connector 20 can be completed in a confined space, reducing the difficulty of operation, increasing the assembly speed and the skill requirements of the operators, and improving the assembly qualification rate.

[0069] In some embodiments of this application, the first pipe 1, the second pipe 2, and the external connector 3 are made of plastic, and the flame retardant rating of the plastic meets the V0 level.

[0070] Using plastic materials for the first conduit 1, the second conduit 2, and the external connector 3 reduces the weight of the cold plate connector 20. This further reduces the weight of the battery pack assembly 100, thus reducing the overall vehicle weight.

[0071] V0 rating is a level in the flame retardant performance evaluation standard for plastic materials. Specifically, it requires that after two 10-second flame burns, the sample's burning time should not exceed 10 seconds, and it should not ignite the cotton below.

[0072] Thus, in extreme situations such as thermal runaway of the battery, the first conduit 1, the second conduit 2, and the external connector 3 are not prone to continuous combustion, effectively preventing the fire from spreading through them. This improves the safety of the battery pack assembly 100.

[0073] For example, the materials of the first pipe 1, the second pipe 2, and the external connector 3 include, but are not limited to: flame-retardant polyamide, flame-retardant polybutylene terephthalate, flame-retardant polyphenylene sulfide, flame-retardant polycarbonate, and their alloys. In some embodiments of this application, the first pipe 1, the second pipe 2, and the external connector 3 may be made of metal.

[0074] See also Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, the cold plate connector 20 further includes a first adapter 6 and a first seal 61, the first adapter 6 being detachably connected to the second pipeline 2. The first adapter 6 is adapted to connect an external cold plate 10. The first seal 61 is disposed between the first adapter 6 and the second pipeline 2.

[0075] For example, the connection methods between the first adapter 6 and the cold plate 10 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0076] For example, the connection methods between the first adapter 6 and the second pipeline 2 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0077] When the first adapter 6 is welded to the cold plate 10, the space available for installation between the cold plates 10 is small, making operation inconvenient. By using the first adapter 6, the connection between the first adapter 6 and the cold plate 10 can be advanced to the production stage of the cold plate 10. This allows the connection to be completed in a spacious, clean production line environment where precision is ensured by tooling fixtures. This improves assembly quality and overall product quality.

[0078] Operators only need to perform simple "plug-in" or "tightening" operations to connect the plastic tubing to the pre-installed adapters. This greatly reduces the difficulty, time, and cost of final assembly, and avoids introducing complex welding processes into the final assembly line.

[0079] When the second pipe 2 is made of plastic and the cold plate 10 is made of metal, welding between the two materials is not possible. The first adapter 6 allows for the installation of the cold plate 10 and the second pipe 2. Welding ensures a secure connection between the first adapter 6 and the end of the cold plate 10, while the detachable connection to the second pipe 2 enables the combination of dissimilar materials.

[0080] The first adapter 6 and the second pipe 2 are detachably connected. This facilitates maintenance. Furthermore, in the event of an accidental impact, the metal first adapter 6 is safer than the plastic second pipe 2, so operators only need to replace the relatively inexpensive second pipe 2, thus reducing maintenance costs.

[0081] Providing a first seal 61 between the first adapter 6 and the second conduit 2 can increase the sealing performance. For example, the first seal 61 can be an O-ring.

[0082] In some embodiments of this application, the cold plate connector 20 further includes a second adapter and a second seal, the second adapter being detachably connected to the first pipeline 1. The second adapter is adapted to connect an external cold plate 10. The second seal is disposed between the second adapter and the first pipeline 1.

[0083] The embodiments and beneficial effects of the second adapter and the second seal can be found in the embodiments and beneficial effects of the first adapter 6 and the first seal 61.

[0084] See also Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, the cold plate connector 20 further includes a first positioning member 7 and a first connecting member 71. The first positioning member 7 is adapted to connect to the external cold plate 10. The first connecting member 71 is disposed on the periphery of the first pipeline 1 and connected to the first pipeline 1, and the first connecting member 71 is detachably connected to the first positioning member 7.

[0085] For example, the first positioning element 7 is made of metal.

[0086] For example, the connection methods between the first positioning member 7 and the cold plate 10 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0087] For example, the first positioning member 7 and the first connecting member 71. The connection methods between them include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, and adhesive.

[0088] For example, the first connector 71 and the first pipeline 1 can be connected by means including but not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, adhesive bonding, welding, and integral molding.

[0089] The first positioning element 7 provides a guiding or initial positioning function, allowing the first conduit 1 with the first connector 71 to be quickly and easily connected to this first positioning element 7.

[0090] The operator does not need to maintain precise alignment between the first pipe 1 and the interface of the cold plate 10 while tightening. The installation of the other side of the cold plate connector 20 can be completed first, and then the first positioning piece 7 can be used to achieve quick installation with the cold plate connector 20.

[0091] When the first pipe 1 is made of plastic and the cold plate 10 is made of metal, welding between the metal and plastic materials is not possible. The connection between the first positioning member 7 and the first connecting member 71 allows for the installation of the cold plate 10 and the first pipe 1. Welding ensures a secure connection between the first positioning member 7 and the end of the cold plate 10, while the detachable connection to the first pipe 1 with the first connecting member 71 enables the combination of dissimilar materials.

[0092] The first connector 71 is located around the periphery of the first pipe 1. This means that the clamping force is distributed along the circumference of the pipe, rather than concentrated at a single point. This provides a more uniform clamping force, making the connection between the first pipe 1 and the first positioning member 7 / cold plate 10 more stable and better resistant to vibration and pressure shocks.

[0093] The first positioning element 7 and the first connecting element 71 are detachably connected. This facilitates maintenance. Secondly, in the event of an accidental impact, the metal first positioning element 7 is safer than the plastic first connecting element 71. Therefore, operators only need to replace the relatively inexpensive first pipe 1 with the first connecting element 71, thus reducing maintenance costs.

[0094] In some embodiments of this application, the cold plate connector 20 further includes a second positioning member and a second connecting member. The second positioning member is adapted to connect to the external cold plate 10. The second connecting member is disposed on the periphery of the second pipeline 2 and connected to the second pipeline 2, and the second connecting member is detachably connected to the second positioning member.

[0095] The embodiments and beneficial effects of the second positioning member and the second connecting member can be found in the embodiments and beneficial effects of the first positioning member 7 and the first connecting member 71.

[0096] The embodiments and beneficial effects of the second connector and the second conduit 2 can be found in the embodiments and beneficial effects of the first connector 71 and the first conduit 1.

[0097] It should be noted that the connection between the first pipe 1 and the cold plate 10 can be achieved through the first adapter 6, or through the connection of the first positioning member 7 and the first connecting member 71. Similarly, the connection between the second pipe 2 and the cold plate 10 can be achieved through the second adapter, or through the connection of the second positioning member and the second connecting member.

[0098] Continue to participate Figure 1 and Figure 2 As shown. This application also provides a battery pack assembly 100, including a cold plate connector 20 and a cold plate 10. A cooling channel 01 is provided in the cold plate 10, and the cooling channel 01 communicates with the cold plate connector 20. The cold plate connector 20 is adapted to be connected to the vehicle's cooling circulation system.

[0099] Cold plate 10 refers to a cover plate disposed around the battery cell and serving to fix or protect the battery cell. Cold plate 10 also includes clamps disposed between battery cells and serving to separate or divide them. Cold plate 10 must have at least a cooling flow channel 01.

[0100] The cooling channel 01 is filled with refrigerant, which exchanges heat with the battery cell within the cooling channel 01, thereby cooling the battery cell. The cold plate connector 20 provides an interface for connecting the cold plate 10 and the vehicle's cooling circulation system.

[0101] Continue to participate Figure 1 and Figure 2 As shown. In some embodiments of this application, the cold plate 10 includes a first cold plate 02 and a second cold plate 03, which are spaced apart. The cold plate connector 20 is disposed between the first cold plate 02 and the second cold plate 03.

[0102] For example, one of the first cold plate 02 and the second cold plate 03 is the upper cold plate 10 of the battery cell, and the other is the lower cold plate 10 of the battery cell. The cold plate connector 20 can be placed between the first cold plate 02 and the second cold plate 03 to reduce space occupation and improve the space utilization of the battery pack assembly 100.

[0103] In one possible implementation, the distance between the first cold plate 02 and the second cold plate 03 is less than or equal to 120 mm. That is, the dimension of the cold plate connector 20 in this direction is less than or equal to 120 mm. When the cold plate connector 20 is installed in a vehicle, the distance between the first cold plate 02 and the second cold plate 03 is in the height direction of the vehicle, i.e., the Z direction in the figure.

[0104] For example, the dimensions of the cold plate connector 20 in the direction of the interval between the first cold plate 02 and the second cold plate 03 are one of 120mm, 110mm, 100mm, 80mm, and 50mm.

[0105] See also Figure 1 and Figure 2 The cold-rolled steel plate connector 20 has a dimension of 35 mm or less in the X direction. An exemplary cold-rolled steel plate connector 20 has a dimension of 35 mm, 30 mm, 25 mm, or 20 mm in the X direction.

[0106] The cold-rolled steel plate connector 20 has a dimension of less than or equal to 80 mm in the Y direction. An exemplary cold-rolled steel plate connector 20 has a dimension of 80 mm, 70 mm, 60 mm, or 50 mm in the X direction.

[0107] In some embodiments of this application, the cold plate connector 20 includes an inlet connector 04 and an outlet connector 05. The first pipe 1 of the inlet connector 04 is connected to the inlet end of the first cold plate 02, and the second pipe 2 of the inlet connector 04 is connected to the inlet end of the second cold plate 03. The first pipe 1 of the outlet connector 05 is connected to the outlet end of the first cold plate 02, and the second pipe 2 of the outlet connector 05 is connected to the outlet end of the second cold plate 03.

[0108] When refrigerant flows into inlet connector 04 through external connector 3, a portion of the refrigerant flows from the first pipe 1 into the inlet end of the first cold plate 02, while another portion simultaneously flows from the second pipe 2 into the inlet end of the second cold plate 03. After circulating within the first cold plate 02, the refrigerant flows out from the outlet end of the first cold plate 02 and into the first pipe 1 of the outlet connector 05. Simultaneously, another portion of the refrigerant circulates within the second cold plate 03, flows out from the outlet end of the second cold plate 03, and into the second pipe 2 of the outlet connector 05. The refrigerant collects in the outlet connector 05 and flows into the vehicle's cooling circulation system from external connector 3.

[0109] Thus, the cooling channels 01 in the first cold plate 02 and the second cold plate 03 are arranged in parallel. This ensures that the refrigerant flow into the first cold plate 02 and the second cold plate 03 is uniform, giving the first cold plate 02 and the second cold plate 03 the same heat exchange effect and reducing temperature unevenness.

[0110] In a parallel system, the total cross-sectional area of ​​the flow path is the sum of the cross-sectional areas of each branch. This configuration also reduces flow resistance.

[0111] The coolant simultaneously enters the first cold plate 02 and the second cold plate 03, and the flow channels in each cold plate 10 are independent branches. The effective flow channel length is equal to the flow channel length of a single cold plate 10. In fluid mechanics, the pressure drop due to frictional resistance is proportional to the pipe length. The parallel connection of the first cold plate 02 and the second cold plate 03 reduces the total flow channel length by half, thereby reducing the pressure drop.

[0112] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cold-rolled steel plate connector (20), characterized in that, include: The first pipeline (1) is connected to the two opposite ends along the first direction; The first direction is the axial direction of the first pipeline (1); The second pipe (2) is connected to the two opposite ends along the first direction; at least a portion of the second pipe (2) is sleeved around the periphery of the first pipe (1); An external connector (3) is provided on the periphery of the second pipeline (2) and is connected to the first pipeline (1) or the second pipeline (2); The elastic seal (4) is located between the first pipeline (1) and the second pipeline (2) and is connected to the first pipeline (1) and the second pipeline (2); One of the first conduit (1) and the second conduit (2) is radially movable relative to the other along the second conduit (2).

2. The cold plate connector (20) according to claim 1, characterized in that, The resilient seal (4) includes: The connecting part (41) is connected to the second pipeline (2); The elastic part (42) is located on the side of the connecting part (41) away from the second pipeline (2); the elastic part (42) includes a first end (421) and a second end (422) opposite to each other. The first end (421) is connected to the connecting part (41), and the second end (422) is spaced apart from the connecting part (41) and connected to the first pipeline (1); the second end (422) can move towards or away from the connecting part (41).

3. The cold plate connector (20) according to claim 1, characterized in that, Along the first direction, the first pipeline (1) and the second pipeline (2) are slidably connected.

4. The cold plate connector (20) according to claim 1, characterized in that, The first pipe (1), the second pipe (2) and the external connector (3) are made of plastic, and the flame retardant rating of the plastic meets the V0 level.

5. The cold-plate connector (20) according to any one of claims 1-4, characterized in that, Also includes: A first adapter (6) and a first seal (61), wherein the first adapter (6) is detachably connected to the second pipeline (2); the first adapter (6) is adapted to connect to an external cold plate (10); the first seal (61) is disposed between the first adapter (6) and the second pipeline (2); and / or The second adapter and the second seal are detachably connected to the first pipeline (1); the second adapter is adapted to connect to an external cold plate (10); the second seal is disposed between the second adapter and the first pipeline (1).

6. The cold-plate connector (20) according to any one of claims 1-4, characterized in that, Also includes: The first positioning member (7) and the first connecting member (71); the first positioning member (7) is adapted to be connected to the external cold plate (10); the first connecting member (71) is disposed on the periphery of the first pipeline (1) and connected to the first pipeline (1), and the first connecting member (71) and the first positioning member (7) are detachably connected. and / or The second positioning member and the second connecting member; the second positioning member is adapted to be connected to the external cold plate (10); the second connecting member is disposed on the periphery of the second pipeline (2) and connected to the second pipeline (2), and the second connecting member and the second positioning member are detachably connected.

7. A battery pack assembly (100), characterized in that, It includes a cold plate connector (20) and a cold plate (10) as described in any one of claims 1-6; the cold plate (10) is provided with a cooling channel (01) and the cooling channel (01) is connected to the cold plate connector (20).

8. The battery pack assembly (100) according to claim 7, characterized in that, The cold plate (10) includes: A first cold plate (02) and a second cold plate (03) are provided at intervals; the cold plate connector (20) is provided between the first cold plate (02) and the second cold plate (03).

9. The battery pack assembly (100) according to claim 8, characterized in that, The cold plate connector (20) includes an inlet connector (04) and an outlet connector (05). The first pipe (1) of the inlet connector (04) is connected to the inlet end of the first cold plate (02), and the second pipe (2) of the inlet connector (04) is connected to the inlet end of the second cold plate (03). The first pipe (1) of the outlet connector (05) is connected to the outlet end of the first cold plate (02), and the second pipe (2) of the outlet connector (05) is connected to the outlet end of the second cold plate (03).

10. A vehicle, characterized in that, Includes the battery pack assembly (100) according to any one of claims 7-9.

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