Cold plate connectors, battery pack assemblies and vehicles

Abstract

This application relates to the field of battery manufacturing technology, providing a cold plate connector, a battery pack assembly, and a vehicle. The cold plate connector presents an installation difficulty issue. The cold plate connector includes a first connector and a second connector. The first connector connects to a first cold plate and communicates with the cooling channel of the first cold plate. The second connector connects to a second cold plate and communicates with the cooling channel of the second cold plate. The first connector includes a first connecting structure, and the second connector includes a second connecting structure. The first and second connecting structures are connected by a flexible hose. The first connecting structure, the second connecting structure, and the flexible hose decompose the simultaneous connection of two cold plates into two independent operations, which can be completed independently without interference during installation. This enhances tolerance compatibility during cold plate installation, thereby reducing installation difficulty.

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, there are difficulties in installing cold plate connectors. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a cold plate connector, a battery pack assembly, and a vehicle, thereby at least resolving the difficulty in installing the cold plate connector.

[0006] A first aspect provides a cold plate connector disposed between a first cold plate and a second cold plate spaced apart, wherein cooling channels are respectively provided within the first and second cold plates. The cold plate connector includes a first connector and a second connector. The first connector is connected to the first cold plate and communicates with the cooling channels of the first cold plate. The second connector is connected to the second cold plate and communicates with the cooling channels of the second cold plate. The first connector includes a first connecting structure, and the second connector includes a second connecting structure. The first connecting structure and the second connecting structure are connected by a flexible hose.

[0007] After the cold plates and battery cells are fixed, the positions of the first and second cold plates are also fixed. Furthermore, to save space, the cold plate connector needs to be installed between the first and second cold plates. The installation space between the first and second cold plates is limited, leading to installation difficulties. The cold plate connector in this application decomposes the simultaneous connection of two cold plates into two independent operations through a first connector, a second connector, and a flexible hose. The first connection structure connects the first cold plate and the flexible hose, and the second connection structure connects the second cold plate and the flexible hose. During installation, the two operations can be completed independently without interference, enhancing tolerance compatibility during cold plate installation. Moreover, during installation, the installation of the first and second connectors and the use of installation tools will not be hindered by another connector that has not yet been installed, thus freeing up space for installation operations and reducing installation difficulty.

[0008] In some embodiments of this application, the first connection structure includes a plug portion and a protrusion disposed on the outer peripheral wall of the plug portion. The flexible tube is interference-fitted with the plug portion and engages with the protrusion.

[0009] In some embodiments of this application, the cold plate connector further includes a first seal located between the plug and the hose. The first connection structure also includes a first stop and a second stop spaced axially along the plug, with the first seal located between the first stop and the second stop.

[0010] In some embodiments of this application, the second connection structure includes an adapter, which has a first end and a second end that are interconnected, and the orientation directions of the first end and the second end intersect. The first end is detachably connected to a flexible hose, and the second end is connected to a second cold plate.

[0011] In some embodiments of this application, the second connector further includes a positioning element and a mating element. The positioning element is connected to the second cold plate. The mating element is located on the periphery of the adapter and is connected to the adapter. The outer peripheral wall of the mating element is adapted to the inner peripheral wall of the positioning element.

[0012] In some embodiments of this application, the cold plate connector further includes an external connector. The external connector communicates with and is detachably connected to the first connector. Alternatively, the external connector communicates with and is detachably connected to the second connector.

[0013] In some embodiments of this application, the external connector includes a flange portion and a plug portion. The plug portion is inserted into the first connector. The flange portion is disposed around the plug portion and connected to the plug portion. The flange portion is detachably connected to the first connector.

[0014] In some embodiments of this application, the cold plate connector further includes a second seal. A receiving groove is provided on the outer peripheral wall of the insert portion, extending circumferentially around the insert portion. The second seal is received in the receiving groove, with at least a portion of the second seal located outside the opening of the receiving groove.

[0015] Secondly, a battery pack assembly is provided. The battery pack assembly includes: a first cold plate and a second cold plate spaced apart, and a cold plate connector provided in any embodiment of the first aspect. Cooling channels are respectively provided in the first cold plate and the second cold plate. The cold plate connector is disposed between the first cold plate and the second cold plate and communicates with the cooling channels of the first cold plate and the second cold plate.

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

[0017] It should be noted that the technical effects of any implementation method in the second and third aspects can be found in the technical effects of the corresponding implementation method 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 for Figure 1 Schematic diagram of the location of the cold plate connector; Figure 3 This is a schematic diagram of the cold plate connector structure according to an embodiment of this application; Figure 4 for Figure 3 Schematic diagram of the cross section along the AA direction; Figure 5 for Figure 4 An enlarged view of point B; Figure 6 This is a schematic diagram of another cold plate connector structure according to an embodiment of this application; Figure 7 for Figure 6 A cross-sectional view along the CC direction.

[0021] Explanation of reference numerals in the attached figures: 100-Battery pack assembly; 10-Cold plate connector; 10a-Inlet connector; 10b-Outlet connector; 20-First cold plate; 30-Second cold plate; 1-First connector; 101-First connecting structure; 11-Plug-in part; 12-Protrusion part; 13-First stop part; 14-Second stop part; 102-Main body part; 2-Second connector; 201-Second connecting structure; 21-Adapter; 211-First end; 212-Second end; 202-Positioning part; 203-Matching part; 3-Hose; 4-External connector; 41-Plug part; 42-Flange part; 43-Receiving groove; 5-First seal; 6-Second seal. 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 of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[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 the battery pack, the battery cells are sandwiched between cold plates. The cold plates on both sides of the cells need to be aligned with their positions for proper cell installation. Simultaneously, the cold plates on both sides must also be aligned so that the interfaces of the cooling channels on the cold plates are aligned for installing the cold plate connectors. Since the positions of the first and second cold plates are fixed after the cold plates and battery cells are secured, and the cold plate connectors rigidly connect the first and second cold plates, the limited installation space between them presents installation difficulties.

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

[0032] like Figure 1 and Figure 2 As shown, this application provides a vehicle. The vehicle includes a battery pack assembly 100 or includes a cold plate connector 10.

[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. The battery pack assembly 100 includes a first cold plate 20 and a second cold plate 30 spaced apart, and a cold plate connector 10. Cooling channels are respectively provided in the first cold plate 20 and the second cold plate 30. The cooling channels provide passages for the refrigerant to flow through, and the refrigerant exchanges heat with the battery cells when flowing through the cooling channels.

[0035] For example, the first cold plate 20 and the second cold plate 30 are the upper cold plate and the lower cold plate of the battery cell, that is, the upper cold plate and the lower cold plate along the vehicle height direction (Z direction in the figure) when the battery cell is installed in the vehicle.

[0036] For example, the first cold plate 20 and the second cold plate 30 can be spacers between battery cells. The arrangement direction of the first cold plate 20 and the second cold plate 30 can be either the length direction (X direction in the figure) or the width direction (Y direction in the figure) of the vehicle.

[0037] The battery pack assembly 100 also includes a cold plate connector 10. The cold plate connector 10 is disposed between the first cold plate 20 and the second cold plate 30, and connects the cooling channels of the first cold plate 20 and the cooling channels of the second cold plate 30.

[0038] By placing the cold plate connector 10 between the first cold plate 20 and the second cold plate 30, rather than outside of them (excluding the space between the first cold plate 20 and the second cold plate 30), the space occupied by the battery pack assembly 100 can be reduced, improving the space utilization rate within the battery pack. Simultaneously, placing the cold plate connector 10 between the first cold plate 20 and the second cold plate 30 also makes the outer side of the battery pack assembly 100 flatter, facilitating installation onto a vehicle.

[0039] See Figure 3 and Figure 4 As shown, this application also provides a cold plate connector 10, which is disposed on a first cold plate 20 spaced apart (see...). Figure 2 ) and the second cold plate 30 (see Figure 2 Cooling channels are respectively provided in the first cold plate 20 and the second cold plate 30. The cold plate connector 10 includes a first connector 1 and a second connector 2. The first connector 1 is connected to the first cold plate 20 and communicates with the cooling channels of the first cold plate 20.

[0040] For example, the connection methods between the first connector 1 and the first cold plate 20 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0041] The connection between the cooling channels of the first connector 1 and the first cold plate 20 means that there is a connecting space inside the first connector 1, and the connecting space inside the first connector 1 is connected to the cooling channels of the first cold plate 20.

[0042] The second connector 2 is connected to the second cold plate 30 and communicates with the cooling channel of the second cold plate 30.

[0043] For example, the connection methods of the second connector 2 and the second cold plate 30 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0044] The connection between the second connector 2 and the cooling channel of the second cold plate 30 means that there is a connecting space inside the second connector 2, and the connecting space inside the second connector 2 is connected to the cooling channel of the second cold plate 30.

[0045] The first connector 1 and the second connector 2 are connected via a flexible hose 3. Specifically, the first connecting structure 101 and the second connecting structure 201 are respectively connected to both ends of the flexible hose 3 and are in communication with each other.

[0046] It should be noted that the hose 3 in this application refers to a pipeline that can undergo elastic deformation without causing damage to the hose 3.

[0047] The space connected within the first connector 1 and the space connected within the second connector 2 are connected by a flexible hose 3. Thus, the cooling channels within the first cold plate 20 and the second cold plate 30 are connected. Refrigerant can flow between the first cold plate 20 and the second cold plate 30 through the cold plate connector 10.

[0048] In this way, the simultaneous connection of two cold plates is broken down into two independent operations through the first connecting structure 101, the second connecting structure 201, and the flexible hose 3: the first connector 1 connects to the first cold plate 20, the first connecting structure 101 connects to the flexible hose 3, the second connector 2 connects to the second cold plate 30, and the second connecting structure 201 connects to the other end of the flexible hose 3. Thus, the two operations can be completed independently during installation without interference.

[0049] Errors in the installation of the first cold plate 20 and the second cold plate 30 will not interfere with the installation of the cold plate connector 10. This improves tolerance compatibility during cold plate installation.

[0050] Furthermore, during installation, the first connector 1, the second connector 2, and the tools used for installation will not be obstructed by another connector that has not yet been installed, thus making room for the installation operation and reducing the difficulty of installation.

[0051] It should be noted that the cold plates mentioned in this application include the first cold plate 20 and the second cold plate 30.

[0052] In one possible implementation, the first connector 1 is installed on the first cold plate 20 before the first cold plate 20 is used to assemble the battery pack. The second connector 2 is installed on the second cold plate 30 before the second cold plate 30 is used to assemble the battery pack. That is, the first cold plate 20 with the first connector 1 and the second cold plate 30 with the second connector 2 are installed on both sides facing the battery cell. After installation, the flexible hose 3 is connected to the first connecting structure 101 and the second connecting structure 201.

[0053] For example, the hose 3 is made of plastic, and the plastic's flame retardancy rating meets the V0 level. The V0 level is a level in the evaluation standard for the flame retardancy performance of plastic materials. Specifically, it requires that after two 10-second flame tests, the sample's burning time should not exceed 10 seconds, and it should not ignite the cotton below.

[0054] For example, the flexible hose 3 can be a bellows. The shape of the bellows is controllable and the bending is predictable. The bellows can reduce interference with surrounding devices during use and can also improve service life in vibration environments.

[0055] When subjected to internal refrigerant pressure, the bellows, due to its annular corrugated structure, possesses a certain radial rigidity, and its resistance to expansion is generally superior to that of a smooth hose of the same wall thickness. This helps maintain the shape of the bellows and the refrigerant flow rate.

[0056] In one possible implementation, the first connecting structure 101 is detachably connected to the hose 3. The second connecting structure 201 is also detachably connected to the hose 3. Thus, if the hose 3 is damaged, it can be removed and replaced, making the operation simple.

[0057] It should be noted that the connection method between the second connecting structure 201 and the hose 3 can be the same as the connection method between the first connecting structure 101 and the hose 3. The following explanation will use the connection between the first connecting structure 101 and the hose 3 as an example.

[0058] See Figure 4 and Figure 5 As shown. In some embodiments of this application, the first connection structure 101 includes a plug portion 11. The flexible hose 3 is interference-fitted with the plug portion 11.

[0059] Thus, the interference fit between the hose 3 and the connector 11 simplifies the structure and reduces costs. It also reduces connection steps and provides reliable sealing and vibration resistance.

[0060] The first connection structure 101 also includes a protrusion 12 disposed on the outer peripheral wall of the insertion part 11. The flexible tube 3 is interference-fitted with the insertion part 11 and simultaneously engaged with the protrusion 12.

[0061] The protrusion 12 forms a physical barrier. When the hose 3 is fitted, its material is stretched by the protrusion 12 and springs back to lock behind it. To pull out the hose 3, its material must undergo a significant, or irreversible, tensile deformation to overcome the protrusion 12. This requires a pulling force greater than that needed to overcome friction, thus providing a safety guarantee against pull-out and improving the seal.

[0062] Meanwhile, the protrusion 12 can prevent slight axial movement caused by vibration or material stress relaxation.

[0063] For example, the protrusion 12 may be provided around the periphery of the insertion portion 11 at least once. In this way, the protrusion 12 provides physical obstruction in the circumference of the insertion portion 11, thereby improving the sealing performance.

[0064] For example, there are multiple protrusions 12, which are spaced apart circumferentially along the insertion portion 11. This arrangement can also form a physical barrier to prevent the hose 3 from detaching. Furthermore, the number of protrusions 12 can be two, three, four, or more.

[0065] For example, there are multiple protrusions 12, and the multiple protrusions 12 can also be spaced apart along the axial direction of the insertion portion 11.

[0066] In one possible implementation, the diameter of the protrusion 12 increases along the direction in which the hose 3 is inserted. For example, the protrusion 12 may be hook-shaped or cedar-shaped.

[0067] See also Figure 4 As shown. In one possible embodiment, the first connector 1 further includes a main body 102, in which a flow channel cavity is provided, and the first connecting structure 101 is connected to the main body 102. Specifically, the insertion part 11 is connected to the main body 102.

[0068] The insertion part 11 is connected to the main body part 102, the flow channel cavity extends into the insertion part 11, and an opening of the flow channel cavity is formed at the end of the insertion part 11.

[0069] For example, the main body 102 is made of metal.

[0070] For example, the connection methods between the main body 102 and the first cold plate 20 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0071] For example, the connection methods between the main body 102 and the insertion part 11 include, but are not limited to: threaded connection, snap-fit, insertion, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0072] When the first cold plate 20 is not installed on the battery pack, the main body 102 can be welded to the first cold plate 20 first (see...). Figure 2 Then, the first cold plate 20 is assembled onto the battery pack. Therefore, by changing the assembly process described above, when using the method of welding the main body 102 to the first cold plate 20, the main body 102 can be installed in a larger assembly space, eliminating the need for welding in the narrow space between the two first cold plates 20. This reduces assembly difficulty.

[0073] See also Figure 4 and Figure 5 As shown. In some embodiments of this application, the cold plate connector 10 further includes a first seal 5, which is located between the insertion portion 11 and the hose 3. The first connection structure 101 also includes a first stop portion 13 and a second stop portion 14 spaced apart along the axial direction of the insertion portion 11, with the first seal 5 located between the first stop portion 13 and the second stop portion 14.

[0074] The first sealing element 5 is provided between the plug part 11 and the hose 3, thereby improving the sealing effect of the hose 3 when installed in the plug part 11.

[0075] The first stop portion 13 and the second stop portion 14 together form a positioning groove. The first seal 5 is located between the first stop portion 13 and the second stop portion 14, which can restrict the displacement of the first seal 5.

[0076] Specifically, the first stop 13 is located on the side of the second stop 14 opposite to the port of the connector 11. The second stop 14 prevents the first seal 5 from slipping towards the port during installation. The first stop 13 prevents the first seal 5 from being excessively pushed to the distal end when the hose 3 is pushed in.

[0077] When the hose 3 is threaded through the connector 11 with the sealing ring, the edge of the sealing ring can easily be scraped, twisted, or sheared by the inner opening of the hose 3, causing permanent damage. The groove formed by the two stops protects the seal within, reducing the possibility of direct scraping between the inner opening of the hose 3 and the seal, and guiding the hose 3 smoothly over the seal.

[0078] The first stop portion 13 and the second stop portion 14 are also provided on the periphery of the insertion portion 11 and are connected to the insertion portion 11. The first stop portion 13 and the second stop portion 14 have the same function as the protrusion portion 12.

[0079] The diameter of the second stop portion 14 increases along the direction of insertion of the hose 3. For example, the shape of the second stop portion 14 is barbed or cedar-shaped.

[0080] As the hose 3 is pulled out, the diameter of the first stop portion 13 increases. For example, the first stop portion 13 may be in the shape of a barb or a cedar tree.

[0081] In one possible implementation, the cold plate connector 10 further includes a clamp located on the side of the hose 3 opposite to the insertion part 11, for securing the hose 3 to the insertion part 11. The clamp reduces the possibility of the hose 3 detaching during use.

[0082] It should be noted that the connection method between the first connecting structure 101 and the hose 3 can also be the same as the connection method between the second connecting structure 201 and the hose 3. The following explanation will further illustrate this using the connection between the second connecting structure 201 and the hose 3 as an example.

[0083] See Figure 4 and Figure 6 As shown. In some embodiments of this application, the second connection structure 201 includes an adapter 21, which includes a first end 211 and a second end 212 that are interconnected, with the orientation direction of the first end 211 intersecting the orientation direction of the second end 212. The first end 211 is detachably connected to the hose 3, and the second end 212 is connected to the second cold plate 30.

[0084] Because the second adapter is connected to the cooling channel of the second cold plate 30, one of the first end 211 and the second end 212 needs to be positioned opposite to the second cold plate 30. For example, the first end 211 is connected to the second cold plate 30, and the second end 212 is connected to the hose 3. The port of the first end 211 faces the second cold plate 30 and is connected to the cooling channel of the second cold plate 30. The angle between the orientation of the second end 212 and the orientation of the first end 211 is greater than 0 degrees and less than 180 degrees.

[0085] This shortens the dimension of the second connector 2 in the direction of the gap between the first cold plate 20 and the second cold plate 30, thereby providing space for installation.

[0086] For example, the angle between the orientation of the second end 212 and the orientation of the first end 211 can be one of 30 degrees, 60 degrees, 90 degrees, 120 degrees, or 150 degrees.

[0087] Taking an example where the angle between the orientation of the second end 212 and the orientation of the first end 211 is 90 degrees. The second end 212 can extend in a manner parallel to the surface of the second cold plate 30 and be connected to the hose 3 through the second end 212.

[0088] The connection methods between the adapter 21 and the hose 3 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, and adhesive bonding. Specifically, the connection method between the adapter 21 and the hose 3 can be found in the connection method between the hose 3 and the plug part 11.

[0089] For example, the adapter 21 can be made of plastic with a flame retardant rating of V0. The adapter 21 can also be made of metal.

[0090] When the adapter 21 is made of plastic, the overall weight of the cold plate connector 10 can be reduced, thereby achieving a lightweight effect.

[0091] See Figure 4 As shown, in some embodiments of this application, the second connector 2 further includes a positioning element 202 and a mating element 203. The positioning element 202 is connected to the second cold plate 30 (see...). Figure 2 The mating part 203 is located on the periphery of the adapter 21 and is connected to the adapter 21. The outer peripheral wall of the mating part 203 is adapted to the inner peripheral wall of the positioning part 202.

[0092] The positioning element 202 provides a guiding or initial positioning function, allowing the adapter 21 with the docking element 203 to be quickly and easily connected to the positioning element 202.

[0093] During installation, precise alignment of the adapter 21 and the second cold plate 30 is unnecessary. Simply align the mating part 203 roughly with the inlet of the positioning part 202 and gently push it in. Under the action of the positioning part 202, the adapter 21 will be automatically corrected to the position corresponding to the cooling channel of the second cold plate 30. This allows for rapid assembly in confined spaces. It even enables blind assembly through rapid positioning, thereby improving assembly efficiency.

[0094] The size of the second joint 2 in this direction can be reduced by the cooperation of the positioning part 202 and the docking part 203.

[0095] It should be noted that the matching of the outer peripheral wall of the mating part 203 with the inner peripheral wall of the positioning part 202 means that the mating part 203 and the positioning part 202 can be fitted together, specifically, through the mating of the outer peripheral wall of the mating part 203 and the inner peripheral wall of the positioning part 202.

[0096] For example, the docking member 203 can be inserted into the positioning member 202. In one possible implementation, the outer peripheral wall of the docking member 203 is provided with a docking protrusion, and the positioning member 202 is adapted to the docking member 203 by providing a positioning recess on the inner peripheral wall of the positioning member 202 that cooperates with the docking protrusion, so that the docking protrusion can slide into the positioning recess.

[0097] For example, the positioning element 202 is made of metal.

[0098] For example, the connection methods between the positioning member 202 and the second cold plate 30 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0099] For example, the connection methods between the positioning member 202 and the mating member 203 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, and magnetic connection.

[0100] For example, the connection methods between the mating part 203 and the adapter part 21 include, but are not limited to: threaded connection, snap-fit, plug-in, locking connection, magnetic connection, adhesive, welding, and integral molding.

[0101] When the adapter 21 is made of plastic and the second cold plate 30 is made of metal, welding between the two materials is not possible. The positioning part 202 is made of metal, and the mating part 203 is made of plastic. The connection between the positioning part 202 and the mating part 203 allows for the installation of the second cold plate 30 and the adapter 21. Welding ensures a secure connection between the positioning part 202 and the second cold plate 30. Simultaneously, the positioning part 202 is detachably connected to the adapter 21 with the mating part 203, achieving a connection between dissimilar materials.

[0102] The mating part 203 is located around the periphery of the adapter 21. This means that the clamping force is distributed along the circumference of the adapter 21, rather than being concentrated at a single point. This provides a more uniform clamping force, making the connection between the adapter 21 and the positioning part 202 / second cold plate 30 more stable and better resistant to vibration and pressure shocks.

[0103] The positioning component 202 and the docking component 203 are detachably connected. This facilitates maintenance. Secondly, in the event of an accidental impact, the metal positioning component 202 is safer than the plastic docking component 203. Therefore, operators only need to replace it with the relatively inexpensive adapter 21 with the docking component 203, thus reducing maintenance costs.

[0104] When the second cold plate 30 is not installed in the battery pack, the positioning component 202 can be welded to the second cold plate 30 first, and then the second cold plate 30 can be assembled into the battery pack. Therefore, by changing the assembly process as described above, when using the method of welding the positioning component 202 to the second cold plate 30, the installation of the positioning component 202 can be completed in a larger assembly space, eliminating the need for welding in the narrow space between the first cold plate 20 and the second cold plate 30. This reduces the assembly difficulty.

[0105] See Figure 6 and Figure 7 As shown, the positioning element 202 is a protruding insertion tube, and the adapter 21 can be inserted into the positioning element 202. This design is simple in structure and easy to install and maintain.

[0106] See also Figure 3 and Figure 4 In some embodiments of this application, the cold plate connector 10 further includes an external connector 4. The external connector 4 communicates with and is detachably connected to the first connector 1. Alternatively, the external connector 4 communicates with and is detachably connected to the second connector 2.

[0107] When the external connector 4 is connected to the first connector 1, the external connector 4 is in communication with the first connector 1. The first connector 1 and the second connector 2 are connected, and the external connector 4 is in communication with the first connector 1, that is, the first connector 1 and the second connector 2 are connected at the same time. Thus, the cooling channels in the first cold plate 20 and the cooling channels in the second cold plate 30 are arranged in parallel.

[0108] This ensures a uniform refrigerant flow into the first cold plate 20 and the second cold plate 30, resulting in identical heat exchange effects for both plates and reducing temperature unevenness.

[0109] 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.

[0110] The refrigerant simultaneously enters the first cold plate 20 and the second cold plate 30, with each cold plate having an independent flow channel. The effective flow channel length is equal to the flow channel length of a single cold plate. In fluid mechanics, the pressure drop due to frictional resistance is proportional to the pipe length. Connecting the first cold plate 20 and the second cold plate 30 in parallel reduces the total flow channel length by half, thereby reducing the pressure drop. This, in turn, ensures a uniform refrigerant flow into the first cold plate 20 and the second cold plate 30, achieving a uniform heat dissipation effect.

[0111] For example, the connection methods between the external connector 4 and the first connector 1 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, and adhesive.

[0112] When the external connector 4 is connected to the second connector 2, the beneficial effects obtained are similar to those when the external connector 4 is connected to the first connector 1, as can be deduced by those skilled in the art.

[0113] For example, the connection methods between the external connector 4 and the second connector 2 include, but are not limited to: threaded connection, snap-fit, plug-in connection, locking connection, magnetic connection, and adhesive.

[0114] See Figure 3 and Figure 4 and combined Figure 1 and Figure 2 As shown, in some embodiments of this application, the cold plate connector 10 includes an inlet connector 10a and an outlet connector 10b. One end of the inlet connector 10a is connected to the inlet end of the first cold plate 20, and the other end of the inlet connector 10a is connected to the inlet end of the second cold plate 30. One end of the outlet connector 10b is connected to the outlet end of the first cold plate 20, and the other end of the outlet connector 10b is connected to the outlet end of the second cold plate 30.

[0115] See also Figure 2 and Figure 4 . Figure 4 The middle arrow indicates the direction of refrigerant flow. When refrigerant flows into inlet connector 10a through external connector 4, a portion of the refrigerant flows into the inlet end of the first cold plate 20 through first connector 1, while another portion flows into the inlet end of the second cold plate 30 through second connector 2. After circulating within the first cold plate 20, the refrigerant flows out from the outlet end of the first cold plate 20 and into the first connector 1 of outlet connector 10b. Simultaneously, another portion of the refrigerant circulates within the second cold plate 30, flows out from the outlet end of the second cold plate 30, and into the second connector 2 of outlet connector 10b. The refrigerant collects in outlet connector 10b and flows into the vehicle's cooling circulation system from external connector 4.

[0116] Thus, the cooling channels in the first cold plate 20 and the second cold plate 30 are arranged in parallel. This ensures that the refrigerant flow into the first cold plate 20 and the second cold plate 30 is uniform, giving the first cold plate 20 and the second cold plate 30 the same heat exchange effect and reducing temperature unevenness.

[0117] The following example illustrates this further by showing the connection between external connector 4 and first connector 1.

[0118] See Figure 4 and Figure 7 As shown. In some embodiments of this application, the external connector 4 includes a flange portion 42 and a plug portion 41, the plug portion 41 being inserted into the first connector 1. The flange portion 42 is disposed around the plug portion 41 and connected to the plug portion 41. The flange portion 42 is detachably connected to the first connector 1.

[0119] The flange portion 42 limits the length of the insertion rod portion 41 into the first connector 1. This improves the accuracy of the insertion rod portion 41 into the first connector 1.

[0120] The insertion rod 41, when inserted into the first connector 1, provides a primary sealing surface. The flange 42 transmits the tensile, torsional, and vibrational stresses from the external pipeline to the first connector 1 and the first cold plate 20, rather than acting on the insertion rod mating surface. This prevents the insertion rod 41 from wearing, deforming, or loosening due to excessive force, and improves the integrity of the sealing interface between the insertion rod 41 and the first connector 1 during long-term use, thereby enhancing the mechanical reliability and fatigue resistance of the connection point.

[0121] For example, the connection methods between the flange portion 42 and the first connector 1 include, but are not limited to: threaded connection, bolted connection, snap-fit, plug-in connection, locking connection, magnetic connection, adhesive bonding, welding, and integral molding.

[0122] As shown in the figure, the flange 42 is connected to the first connector 1 by bolts.

[0123] For example, the external connector 4 is made of metal.

[0124] For example, the external connector 4 is made of plastic, and the plastic has a flame retardant rating of V0. This reduces the overall weight of the cold plate connector 10, achieving the goal of lightweighting.

[0125] In some embodiments of this application, the cold plate connector 10 further includes a second seal 6. A receiving groove 43 is provided on the outer peripheral wall of the insert rod portion 41, extending circumferentially around the insert rod portion 41. The second seal 6 is received in the receiving groove 43, with at least a portion of the second seal 6 located outside the opening of the receiving groove 43.

[0126] The receiving groove 43 provides an installation position for the second seal 6, reduces the displacement of the second seal 6 when the insertion rod 41 is inserted into the first connector 1, and improves the sealing between the first connector 1 and the external connector 4.

[0127] Without the receiving groove 43, when a rod with a sealing ring is inserted into a hole, the sealing ring is easily twisted or damaged due to unilateral force. The receiving groove 43 confines the seal within the groove, reducing the possibility of it becoming spirally twisted.

[0128] For example, multiple second seals 6 can be provided, and they are spaced apart along the extension direction of the insert portion 41. Correspondingly, multiple receiving grooves 43 can also be provided.

[0129] For example, the number of second seals 6 can be set to multiple, and the number of receiving grooves 43 is one, with multiple second seals 6 located in one receiving groove 43.

[0130] In one possible scenario, as the system pressure increases, the fluid pressure may attempt to push the seal to one side. The sidewall of the receiving groove 43 near the low-pressure side can prevent the seal from shifting, while the pressure forces the seal to press tightly against the inner wall of the first connector 1 and the bottom of the receiving groove 43, creating a self-tightening effect, thereby improving the sealing capability under high pressure.

[0131] See also Figure 1 and Figure 2 As shown. The distance between the first cold plate 20 and the second cold plate 30 is less than or equal to 120 mm. That is, the dimension of the cold plate connector 10 in this direction is less than or equal to 120 mm. When the cold plate connector 10 is installed in the vehicle, the distance between the first cold plate 20 and the second cold plate 30 is in the height direction of the vehicle, that is, the Z direction in the figure.

[0132] For example, the dimensions of the cold plate connector 10 in the direction of the interval between the first cold plate 20 and the second cold plate 30 are one of 120mm, 110mm, 100mm, 80mm, and 50mm.

[0133] For example, the dimensions of the cold plate connector 10 in the direction of the interval between the first cold plate 20 and the second cold plate 30 are one of 120mm, 110mm, 100mm, 80mm, and 50mm.

[0134] The volumetric cold plate connector 10 has a dimension in the X direction of less than or equal to 35 mm. An exemplary cold plate connector 10 has a dimension in the X direction of one of 35 mm, 30 mm, 25 mm, or 20 mm.

[0135] The cold-rolled steel plate connector 10 has a dimension of less than or equal to 80 mm in the Y direction. An exemplary cold-rolled steel plate connector 10 has a dimension of 80 mm, 70 mm, 60 mm, or 50 mm in the X direction.

[0136] 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 (10), characterized in that, For placement between a first cold plate (20) and a second cold plate (30) spaced apart, wherein the first cold plate (20) and the second cold plate (30) are respectively provided with cooling channels; the cold plate connector (10) includes: The first connector (1) includes a first connecting structure (101); the first connector (1) is connected to the first cold plate (20) and communicates with the cooling channel of the first cold plate (20); The second connector (2) includes a second connecting structure (201); the second connector (2) is connected to the second cold plate (30) and communicates with the cooling channel of the second cold plate (30); The first connecting structure (101) and the second connecting structure (201) are connected by a hose (3).

2. The cold plate connector (10) according to claim 1, characterized in that, The first connection structure (101) includes: a plug-in portion (11) and a protrusion (12) disposed on the outer peripheral wall of the plug-in portion (11); the hose (3) is press-fitted with the plug-in portion (11) and snapped into the protrusion (12).

3. The cold plate connector (10) according to claim 2, characterized in that, The cold plate connector (10) further includes a first sealing element (5), which is located between the plug portion (11) and the hose (3); The first connection structure (101) further includes a first stop (13) and a second stop (14) spaced apart along the axial direction of the plug (11), and the first seal (5) is located between the first stop (13) and the second stop (14).

4. The cold plate connector (10) according to claim 1, characterized in that, The second connection structure (201) includes: The adapter (21) includes a first end (211) and a second end (212) that are connected to each other. The orientation direction of the first end (211) and the orientation direction of the second end (212) intersect. The first end (211) is detachably connected to the hose (3), and the second end (212) is connected to the second cold plate (30).

5. The cold plate connector (10) according to claim 4, characterized in that, The second connector (2) also includes: The positioning element (202) is connected to the second cold plate (30); A docking part (203) is disposed on the periphery of the adapter (21) and connected to the adapter (21); the outer peripheral wall of the docking part (203) is adapted to the inner peripheral wall of the positioning part (202).

6. The cold-plate connector (10) according to any one of claims 1-5, characterized in that, The cold plate connector (10) also includes an external connector (4). The external connector (4) is connected to the first connector (1) and is detachably connected; Alternatively, the external connector (4) may be connected to the second connector (2) and may be detachably connected.

7. The cold plate connector (10) according to claim 6, characterized in that, The external connector (4) includes: Insertion rod (41), which is inserted into the first connector (1). A flange (42) is disposed on the periphery of the insertion rod (41) and connected to the insertion rod (41); the flange (42) is detachably connected to the first connector (1).

8. The cold plate connector (10) according to claim 7, characterized in that, The cold plate connector (10) also includes a second sealing element (6); A receiving groove (43) is provided on the outer peripheral wall of the insertion rod portion (41), and the receiving groove (43) extends circumferentially around the insertion rod portion (41); the second sealing member (6) is received in the receiving groove (43), and at least a portion of the second sealing member (6) is located outside the opening of the receiving groove (43).

9. A battery pack assembly (100), characterized in that, include: A first cold plate (20) and a second cold plate (30) are spaced apart, and cooling channels are respectively provided in the first cold plate (20) and the second cold plate (30); The cold plate connector (10) according to any one of claims 1-8 is disposed between the first cold plate (20) and the second cold plate (30) and connects the cooling channel of the first cold plate (20) and the cooling channel of the second cold plate (30).

10. A vehicle, characterized in that, Includes the battery pack assembly (100) as described in claim 9.

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