Pipeline connecting structure, battery device and electric device

Abstract

The embodiment of the utility model provides a pipeline connecting structure, a battery device and an electric device. The pipeline connecting structure comprises a first main body and a second main body. A flow channel is formed in the first body and provided with a first opening and a second opening which are oppositely arranged, and the first opening is used for being connected with a first pipeline. The second body is arranged on the peripheral face of the first body in a sleeving mode, located between the first opening and the second opening and used for limiting the first pipeline to move towards the second opening. A first connecting part is arranged on the outer circumferential surface of the first main body, a second connecting part corresponding to the first connecting part is arranged on the inner circumferential surface of the second main body, and the first connecting part is matched with the second connecting part. According to the technical scheme, the reliability of the battery device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a pipeline connection structure, a battery device and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the development of battery technology, how to improve the reliability of battery devices is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a pipeline connection structure, a battery device and an electrical device, which can improve the reliability of the battery device.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a pipeline connection structure. The pipeline connection structure includes a first body and a second body. The first body has a flow channel inside, and the flow channel has a first opening and a second opening arranged opposite to each other, and the first opening is used to connect a first pipeline. The second body is sleeved on the outer circumference of the first body and is located between the first opening and the second opening, and the second body is used to limit the movement of the first pipeline toward the second opening. The outer circumference of the first body is provided with a first connection part, and the inner circumference of the second body is provided with a second connection part corresponding to the first connection part, and the first connection part cooperates with the second connection part.

[0007] The technical solution of the embodiment of the present application realizes the connection between the first body and the second body by cooperating with the first connecting part and the second connecting part, reduces the risk of the second body falling off the first body, improves the reliability of the connection between the first body and the second body, improves the reliability of the cooperation between the first pipe and the pipe connection structure, reduces the risk of leakage during transportation, and improves the reliability of the battery device.

[0008] In some embodiments, one of the first connection portion and the second connection portion is a first groove, and the other of the first connection portion and the second connection portion is a protrusion, and at least a portion of the protrusion is disposed in the first groove.

[0009] The technical solution of the embodiment of the present application improves the reliability of the connection between the first body and the second body by setting a protrusion in the first groove.

[0010] In some embodiments, the number of protrusions and the number of first grooves are both multiple, the multiple first grooves are arranged at intervals along the circumference of the first body, the multiple protrusions are arranged at intervals along the circumference of the first body, and each protrusion is arranged corresponding to each first groove.

[0011] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body and the second body by correspondingly cooperating with multiple protrusions arranged along the circumference of the first body and multiple first grooves arranged along the circumference of the first body.

[0012] In some embodiments, the protrusion extends along the circumference of the first body, and the first groove extends along the circumference of the first body.

[0013] According to the technical solution of the embodiment of the present application, both the protrusion and the first groove extend along the circumference of the first body, thereby increasing the contact area between the protrusion and the first groove and further improving the reliability of the connection between the first body and the second body.

[0014] In some embodiments, the protrusion extends along a first direction, and the first groove extends along the first direction, wherein the first direction is parallel to an axial direction of the first body.

[0015] According to the technical solution of the embodiment of the present application, both the protrusion and the first groove extend along the first direction, thereby increasing the contact area between the protrusion and the first groove and further improving the reliability of the connection between the first body and the second body.

[0016] In some embodiments, the number of protrusions and the number of first grooves are both multiple, the multiple first grooves are arranged at intervals along the first direction, the multiple protrusions are arranged at intervals along the first direction, and each protrusion is arranged corresponding to a first groove.

[0017] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body and the second body by correspondingly matching a plurality of protrusions arranged at intervals along the first direction with a plurality of first grooves arranged at intervals along the first direction.

[0018] In some embodiments, the number of protrusions and the number of first grooves are both plural, the multiple first grooves are arranged in an array, the multiple protrusions are arranged in an array, and each protrusion is disposed correspondingly to each first groove.

[0019] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body and the second body by correspondingly cooperating with a plurality of protrusions arranged in an array and a plurality of first grooves arranged in an array.

[0020] In some embodiments, the first connection portion is a first groove, and the second connection portion is a protrusion.

[0021] The technical solution of the embodiment of the present application improves the reliability of the connection between the first body and the second body by providing a first groove on the first body and a protrusion on the second body.

[0022] In some embodiments, the pipeline connection structure further includes a third body, which is annular and sleeved on the outside of the first body. The third body can limit the second body from moving toward the second opening.

[0023] The technical solution of the embodiment of the present application is to provide a third body sleeved on the first body to restrict the second body from moving toward the second opening, thereby improving the reliability of the connection between the second body and the first body.

[0024] In some embodiments, the third body is provided with a second groove, the second groove is provided around the first body, and at least a portion of the second body is embedded in the second groove and contacts with a bottom surface of the second groove.

[0025] According to the technical solution of the embodiment of the present application, a second groove is arranged on the third body, and the bottom surface of the second groove contacts the second body to limit the movement of the second body toward the second opening, thereby improving the reliability of the connection between the second body and the first body.

[0026] In some embodiments, the third body is provided with a plurality of weight-reducing holes.

[0027] The technical solution of the embodiment of the present application provides a weight-reducing hole to reduce the mass of the pipeline connection structure, thereby reducing the mass of the battery device and improving the energy density of the battery device.

[0028] In a second aspect, the present application further provides a battery device. The battery device includes a housing, a thermal management component, a first pipe, and a pipe connection structure of any embodiment of the first aspect. The housing has a mounting hole. The thermal management component is disposed in the housing. The pipe connection structure is mounted in the mounting hole, the first opening is located in the housing, and the second opening is located outside the housing. The first pipe connects the first opening and the thermal management component.

[0029] The technical solution of the embodiment of the present application connects the first pipe through the pipe connection structure so that the thermal management component is connected to the container storing the heat exchange medium, thereby improving the convenience of transporting the heat exchange medium from the container storing the heat exchange medium to the thermal management component.

[0030] In a third aspect, the present application further provides an electrical device, comprising a battery device according to any one of the embodiments in the second aspect, and the battery device is used to provide electrical energy to the electrical device.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0034] Figure 2 An exploded view of a battery device provided in some embodiments of the present application;

[0035] Figure 3 An exploded view of a pipeline connection structure provided in some embodiments of the present application;

[0036] Figure 4 A schematic diagram of a pipeline connection structure provided in some embodiments of the present application;

[0037] Figure 5 Schematic diagram of pipeline connection structure provided in other embodiments of the present application;

[0038] Figure 6 A schematic diagram of a pipeline connection structure provided in some other embodiments of the present application;

[0039] Figure 7 A schematic diagram of the connection between a pipeline connection structure and a box body provided in some embodiments of the present application.

[0040] Icons: 1-pipe connection structure; 10-first body; 11-flow channel; 111-first opening; 112-second opening; 12-first connecting part; 121-first groove; 20-second body; 21-second connecting part; 211-protrusion; 30-third body; 31-second groove; 32-third groove; 33-weight reduction hole; 34-connecting hole; 40-seal; 50-blocking part; 100-battery device; 110-box; 110a-first sub-box; 110b-second sub-box; 120-thermal management component; 130-first pipe; 140-battery cell assembly; 1000-vehicle; 1100-controller; 1200-motor; X-first direction. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0043] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0047] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0048] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0049] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0050] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0051] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0052] As an example, the box may include a first sub-box and a second sub-box. The first sub-box and the second sub-box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first sub-box can be a top cover or a bottom plate.

[0053] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0054] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0055] In some embodiments, the battery device refers to an energy storage device, which includes a box body, at least one side of which is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, and the like.

[0056] At present, from the perspective of market development, battery devices have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as electric tools, drones, energy storage equipment, etc. As the application areas of batteries continue to expand, the market demand is also constantly expanding.

[0057] The development of battery technology must take into account many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, as environmental conditions and / or internal conditions of the battery change, the reliability of the battery device is also one of the key factors to consider.

[0058] At present, the battery device is provided with a thermal management component in the box, which is used to perform heat exchange with the battery monomer assembly in the box to maintain the temperature of the battery monomer assembly. The battery device is provided with a pipeline connection structure on the box, and the thermal management component is connected to the container storing the heat exchange medium through the pipeline connection structure to exchange the heat exchange medium with the thermal management component.

[0059] The pipeline connection structure is connected to the thermal management component through a pipeline. When the pipeline in the box is connected to the pipeline connection structure, the pipeline is sleeved on the outer peripheral surface of one end of the pipeline connection structure, and the pipeline connection structure needs to have a convex portion for abutting the pipeline to achieve the position limitation of the pipeline. However, due to the thick wall thickness of the convex portion, when the pipeline connection structure is processed by injection molding, the fluidity of the injection molding material is poor, which easily leads to poor structural strength of the convex portion. Therefore, the pipeline connection structure is divided into a first body and a second body, the first body has a flow channel connected to the pipeline, the second body is sleeved on the outer peripheral surface of the first body, and the second body abuts against one end of the pipeline away from the thermal management component to limit the movement of the pipeline in the direction away from the thermal management component.

[0060] However, when the second body is sleeved on the first body, there is a problem of poor connection reliability between the second body and the first body, which causes the second body to fall off from the first body, resulting in failure of pipeline limit, and leakage when transporting heat exchange medium, thereby causing short circuit of the battery cell assembly or failure of cooling of the battery cell assembly, affecting the reliability of the battery device.

[0061] Based on the above considerations, in order to solve the problem that the reliability of the connection between the second body and the first body is poor, thereby affecting the reliability of the battery device, an embodiment of the present application provides a pipeline connection structure. The pipeline connection structure includes a first body and a second body. The first body has a flow channel inside, and the flow channel has a first opening and a second opening arranged opposite to each other, and the first opening is used to connect the first pipeline. The second body is sleeved on the outer circumferential surface of the first body and is located between the first opening and the second opening. The second body is used to limit the movement of the first pipeline toward the second opening. The outer circumferential surface of the first body is provided with a first connecting portion, and the inner circumferential surface of the second body is provided with a second connecting portion corresponding to the first connecting portion, and the first connecting portion cooperates with the second connecting portion.

[0062] A first connecting portion is provided on the first body, and a second connecting portion is provided on the second body. The first connecting portion cooperates with the second connecting portion to realize connection between the first body and the second body, thereby reducing the risk of the second body falling off from the first body, improving the reliability of the connection between the first body and the second body, improving the reliability of the cooperation between the first pipeline and the pipeline connection structure, reducing the risk of leakage during transportation, and improving the reliability of the battery device.

[0063] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery cells and battery devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0064] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0065] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. Vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used for powering the vehicle 1000. For example, the battery device 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0066] The vehicle 1000 may further include a controller 1100 and a motor 1200 , wherein the controller 1100 is used to control the battery device 100 to supply power to the motor 1200 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0067] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0068] The battery device includes a battery cell assembly and a power management system. The battery management system is connected to the battery cell assembly and is used to manage the charging and discharging of the battery cell assembly.

[0069] Please refer to Figure 2 , Figure 2 An exploded view of a battery device provided in some embodiments of the present application. The battery device 100 may further include a housing 110, in which a battery cell assembly 140 is accommodated. The housing 110 is used to provide a storage space for the battery cell assembly 140, and the housing 110 may adopt a variety of structures. In some embodiments, the housing 110 may include a first sub-housing 110a and a second sub-housing 110b, the first sub-housing 110a and the second sub-housing 110b cover each other, and the first sub-housing 110a and the second sub-housing 110b jointly define a storage space for accommodating the battery cell assembly 140. The first sub-box 110a may be a hollow structure with one end open, and the second sub-box 110b may be a plate-like structure, and the second sub-box 110b covers the open side of the first sub-box 110a, so that the first sub-box 110a and the second sub-box 110b jointly define a storage space; the first sub-box 110a and the second sub-box 110b may also be hollow structures both with one side open, and the open side of the first sub-box 110a covers the open side of the second sub-box 110b.

[0070] In the battery device 100, there may be multiple battery cell assemblies 140, and the multiple battery cell assemblies 140 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cell assemblies 140 are both connected in series and in parallel. The multiple battery cell assemblies 140 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cell assemblies 140 is accommodated in the box 110; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cell assemblies 140 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 110. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cell assemblies 140.

[0071] The battery cell assembly 140 may include a plurality of battery cells, and the battery cells may be secondary batteries or primary batteries; the battery cells may also be lithium-sulfur batteries, sodium-ion batteries or magnesium-ion batteries, but are not limited thereto.

[0072] Please refer to Figure 3 , Figure 3 An exploded view of a pipe connection structure provided for some embodiments of the present application. An embodiment of the present application provides a pipe connection structure 1 for a battery device 100. The pipe connection structure 1 includes a first main body 10 and a second main body 20. The first main body 10 has a flow channel 11 inside, and the flow channel 11 has a first opening 111 and a second opening 112 arranged opposite to each other, and the first opening 111 is used to connect the first pipe 130. The second main body 20 is sleeved on the outer circumference of the first main body 10 and is located between the first opening 111 and the second opening 112. The second main body 20 is used to limit the movement of the first pipe 130 toward the second opening 112. The outer circumference of the first main body 10 is provided with a first connecting portion 12, and the inner circumference of the second main body 20 is provided with a second connecting portion 21 corresponding to the first connecting portion 12, and the first connecting portion 12 cooperates with the second connecting portion 21.

[0073] In some embodiments, the pipe connection structure 1 may include a first body 10 and a second body 20. The first body 10 may have a flow channel 11 extending through both ends of the first body 10, wherein a first opening 111 of the flow channel 11 is disposed at one end of the first body 10, and a second opening 112 of the flow channel 11 is disposed at the other end of the first body 10.

[0074] In some embodiments, the first body 10 may be cylindrical, such as a cylinder, a cuboid, etc.

[0075] In some embodiments, along the extension direction of the first body 10 , the outer diameter of the first body 10 may remain unchanged or may vary.

[0076] In some embodiments, the cross-section of the flow channel 11 may be circular, square, or the like.

[0077] In some embodiments, the first body 10 may be made of plastic or metal.

[0078] In some embodiments, the second body 20 may be made of plastic or metal.

[0079] In some embodiments, the materials of the first body 10 and the second body 20 may be the same or different.

[0080] In some embodiments, the second body 20 and the first body 10 may be integrally formed or may be separately provided.

[0081] When the first body 10 and the second body 20 are processed by one-time injection molding, since the wall thickness of the portion corresponding to the second body 20 is the sum of the wall thickness of the second body 20 and the wall thickness of the first body 10, and its thickness is relatively large, during the one-time injection molding process, due to the poor fluidity of the injection molding material, the density of the injection molding material corresponding to the portion of the second body 20 is low, resulting in poor structural strength of the portion. In some embodiments, after the first body 10 is injection molded, secondary injection molding is performed on the outer peripheral surface of the first body 10 to complete the processing of the second body 20, thereby improving the structural strength of the portion corresponding to the second body 20 and improving the reliability of the connection between the second body 20 and the first body 10.

[0082] In some embodiments, the second body 20 is sleeved on the outer circumference of the first body 10, that is, the second body 20 is convexly disposed on the outer circumference of the first body 10. When the first opening 111 is connected to the first pipe 130, the first pipe 130 can be sleeved on one end of the first body 10, and the first pipe 130 can contact with one end of the second body 20 facing the first opening 111, thereby limiting the first pipe 130 from moving toward the second opening 112.

[0083] In some embodiments, the second body 20 is sleeved on the outer circumference of the first body 10, that is, the inner circumference of the second body 20 is in contact with the outer circumference of the first body 10. The inner circumference of the second body 20 may be the surface of the second body 20 facing the flow channel 11, and the outer circumference of the first body 10 may be the surface of the first body 10 facing away from the flow channel 11.

[0084] The outer circumference of the first body 10 is provided with a first connection part 12, and the inner circumference of the second body 20 is provided with a second connection part 21, that is, when the outer circumference of the first body 10 is connected to the inner circumference of the second body 20, the position of the first connection part 12 and the position of the second connection part 21 can correspond.

[0085] In some embodiments, the first connection portion 12 may be a protrusion, and the second connection portion 21 may be a first groove. Alternatively, the first connection portion 12 may be a first groove, and the second connection portion 21 may be a protrusion.

[0086] In some embodiments, when the first body 10 and the second body 20 are separately arranged, the second body 20 is sleeved on the outer circumference of the first body 10, and the first connecting portion 12 and the second connecting portion 21 cooperate to limit the second body 20 from moving along the outer circumference of the first body 10 toward the first opening 111 or the second opening 112, thereby improving the reliability of the connection between the first body 10 and the second body 20.

[0087] In some embodiments, after the first body 10 is injection molded, the second body 20 is formed on the outer peripheral surface of the first body 10 by secondary injection molding, and the first connecting portion 12 and the second connecting portion 21 increase the contact area between the first body 10 and the second body 20, thereby improving the reliability of the connection between the first body 10 and the second body 20.

[0088] In order to reduce the risk of impurities entering the flow channel 11 through the first opening 111 or the second opening 112 during the transportation process of the pipeline connection structure 1, the pipeline connection structure 1 also includes a blocking piece 50. The number of the blocking pieces 50 can be two, and the two blocking pieces 50 respectively block the first opening 111 and the second opening 112.

[0089] The technical solution of the embodiment of the present application realizes the connection between the first body 10 and the second body 20 by cooperating with the first connecting part 12 and the second connecting part 21, reduces the risk of the second body 20 falling off the first body 10, improves the reliability of the connection between the first body 10 and the second body 20, improves the reliability of the connection of the first pipeline 130, reduces the risk of leakage during transportation, and improves the reliability of the battery device 100.

[0090] Please refer to Figure 3 , and refer to Figure 4 and Figure 5 , Figure 4 A schematic diagram of a pipeline connection structure provided in some embodiments of the present application, Figure 5 Schematic diagram of a pipe connection structure provided in some other embodiments of the present application. In some embodiments, one of the first connection portion 12 and the second connection portion 21 is a first groove 121 , and the other of the first connection portion 12 and the second connection portion 21 is a protrusion 211 , and at least a portion of the protrusion 211 is disposed in the first groove 121 .

[0091] In some embodiments, the first connection portion 12 may be a first groove 121 , and the second connection portion 21 may be a protrusion 211 .

[0092] The first groove 121 may be formed by the outer circumference of the first body 10 being concave toward the inner circumference. The inner circumference of the first body 10 may be a flat surface, that is, the first groove 121 may not affect the flatness of the inner circumference of the first body 10.

[0093] The protrusion 211 may protrude from the inner circumference of the second body 20 in a direction away from the outer circumference of the second body 20 .

[0094] In some embodiments, the first connection portion 12 may be a protrusion 211 , and the second connection portion 21 may be a first groove 121 .

[0095] The protrusion 211 may be formed by the outer circumference of the first body 10 protruding away from the inner circumference.

[0096] The first groove 121 may be formed by the inner circumference of the second body 20 being recessed toward the outer circumference of the second body 20 .

[0097] In some embodiments, the first connecting part 12 may include a first groove 121 and a protrusion 211, the second connecting part 21 may include a protrusion 211 and the first groove 121, the protrusion 211 of the first connecting part 12 cooperates with the first groove 121 of the second connecting part 21, and the first groove 121 of the first connecting part 12 cooperates with the protrusion 211 of the second connecting part 21.

[0098] In some embodiments, the protrusion 211 may be partially disposed in the first groove 121 , a portion of the outer surface of the protrusion 211 is in contact with the inner surface of the first groove 121 , and another portion of the protrusion 211 is located outside the first groove 121 .

[0099] In some embodiments, the protrusion 211 may be entirely disposed in the first groove 121 , and the entire outer surface of the protrusion 211 may be in contact with the inner surface of the first groove 121 .

[0100] The technical solution of the embodiment of the present application improves the reliability of the connection between the first body 10 and the second body 20 by setting the protrusion 211 in the first groove 121.

[0101] Please refer to Figures 3 to 5 In some embodiments, the number of protrusions 211 and the number of first grooves 121 are both multiple, and the multiple first grooves 121 are arranged at intervals along the circumference of the first body 10, and the multiple protrusions 211 are arranged at intervals along the circumference of the first body 10, and each protrusion 211 is arranged corresponding to each first groove 121.

[0102] In some embodiments, there may be a plurality of protrusions 211 and a plurality of first grooves 121 , and the number of protrusions 211 and the number of first grooves 121 may be the same. Each protrusion 211 is correspondingly disposed in each first groove 121 .

[0103] In some embodiments, the first body 10 and the second body 20 may be provided separately. The number of the first grooves 121 may be greater than the number of the protrusions 211 , so that when the second body 20 is sleeved on the first body 10 , the protrusions 211 can better match the first grooves 121 .

[0104] In some embodiments, a circumferential direction of the first body 10 and a circumferential direction of the second body 20 may be parallel.

[0105] In some embodiments, a plurality of first grooves 121 may be arranged at intervals along the circumference of the first body 10 , and the distance between two adjacent first grooves 121 may be equal, unequal, or partially equal and partially unequal.

[0106] In some embodiments, the plurality of protrusions 211 may be arranged at intervals along the circumference of the first body 10 , and the distance between two adjacent protrusions 211 may be equal, unequal, or partially equal and partially unequal.

[0107] In some embodiments, the plurality of first grooves 121 may be arranged along the circumference of the first body 10, and the plurality of first grooves 121 may be arranged on the outer circumference of the first body 10 to form a closed loop, or may not be arranged on the outer circumference of the first body 10 for a complete circle. Correspondingly, the plurality of protrusions 211 may be arranged along the circumference of the first body 10, and the plurality of protrusions 211 may be arranged on the inner circumference of the second body 20 to form a closed loop, or may not be arranged on the inner circumference of the second body 20 for a complete circle.

[0108] In some embodiments, the plurality of first grooves 121 may be arranged along the circumference of the first body 10, and the plurality of first grooves 121 may be arranged on the inner circumference of the second body 20 to form a closed loop, or may not be arranged on the inner circumference of the second body 20 for a complete circle. Correspondingly, the plurality of protrusions 211 may be arranged along the circumference of the first body 10, and the plurality of protrusions 211 may be arranged on the outer circumference of the first body 10 to form a closed loop, or may not be arranged on the outer circumference of the first body 10 for a complete circle.

[0109] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body 10 and the second body 20 by correspondingly cooperating with multiple protrusions 211 arranged along the circumference of the first body 10 and multiple first grooves 121 arranged along the circumference of the first body 10.

[0110] Please refer to Figure 3 and Figure 4 In some embodiments, the protrusion 211 extends along the circumference of the first body 10 , and the first groove 121 extends along the circumference of the first body 10 .

[0111] In some embodiments, the protrusion 211 may have a certain size in the circumferential direction of the first body 10. The first groove 121 may have a certain size in the circumferential direction of the first body 10.

[0112] According to the technical solution of the embodiment of the present application, both the protrusion 211 and the first groove 121 extend along the circumference of the first body 10 , thereby increasing the contact area between the protrusion 211 and the first groove 121 and further improving the reliability of the connection between the first body 10 and the second body 20 .

[0113] Please refer to Figure 5 In some embodiments, the protrusion 211 extends along the first direction X, and the first groove 121 extends along the first direction X. The first direction X is parallel to the axis direction of the first body 10 .

[0114] In some embodiments, the first direction may be represented by the direction indicated by the letter X in the figure.

[0115] In some embodiments, the first body 10 may extend along the first direction X. The flow channel 11 of the first body 10 may extend along the first direction X.

[0116] In some embodiments, the second body 20 may extend along the first direction X.

[0117] In some embodiments, the first direction X may be parallel to an axis of the second body 20 .

[0118] In some embodiments, when the first body 10 and the second body 20 are separately arranged, and the first connecting portion 12 is a protrusion 211, and the second connecting portion 21 is a first groove 121, the first groove 121 can extend along the first direction X, and the first groove 121 can extend to an end of the second body 20 away from the first opening 111, so that the first groove 121 of the second body 20 can cooperate with the protrusion 211 of the first body 10.

[0119] In some embodiments, when the first connection portion 12 is a first groove 121 and the second connection portion 21 is a protrusion 211, a plurality of first grooves 121 may be arranged along the first direction X, the plurality of first grooves 121 may extend to one end of the first body 10 in the first direction X, the plurality of first grooves 121 may extend to both ends of the first body 10 in the first direction X, or the plurality of first grooves 121 may not extend to any end of the first body 10 in the first direction X. Correspondingly, a plurality of protrusions 211 may be arranged along the first direction X, the plurality of protrusions 211 may extend to one end of the second body 20 in the first direction X, the plurality of protrusions 211 may extend to both ends of the second body 20 in the first direction X, or the plurality of protrusions 211 may not extend to any end of the second body 20 in the first direction X.

[0120] In some embodiments, when the second connection portion 21 is a first groove 121 and the first connection portion 12 is a protrusion 211, a plurality of first grooves 121 may be arranged along the first direction X, the plurality of first grooves 121 may extend to one end of the second body 20 in the first direction X, the plurality of first grooves 121 may extend to both ends of the second body 20 in the first direction X, or the plurality of first grooves 121 may not extend to any end of the second body 20 in the first direction X. Correspondingly, a plurality of protrusions 211 may be arranged along the first direction X, the plurality of protrusions 211 may extend to one end of the first body 10 in the first direction X, the plurality of protrusions 211 may extend to both ends of the first body 10 in the first direction X, or the plurality of protrusions 211 may not extend to any end of the first body 10 in the first direction X.

[0121] According to the technical solution of the embodiment of the present application, both the protrusion 211 and the first groove 121 extend along the first direction X, thereby increasing the contact area between the protrusion 211 and the first groove 121 and further improving the reliability of the connection between the first body 10 and the second body 20.

[0122] In some embodiments, the number of protrusions 211 and the number of first grooves 121 are both multiple, and the multiple first grooves 121 are arranged at intervals along the first direction X, and the multiple protrusions 211 are arranged at intervals along the first direction X, and each protrusion 211 is arranged corresponding to a first groove 121.

[0123] In some embodiments, a plurality of first grooves 121 may be arranged at intervals along the first direction X, and the distance between two adjacent first grooves 121 may be equal, unequal, or partially equal and partially unequal.

[0124] In some embodiments, the plurality of protrusions 211 may be arranged at intervals along the first direction X, and the distance between two adjacent protrusions 211 may be equal, unequal, or partially equal and partially unequal.

[0125] In some embodiments, a portion of the plurality of protrusions 211 may be arranged at intervals along the first direction X, and another portion may be arranged at intervals along the circumference of the first body 10 .

[0126] Correspondingly, a portion of the plurality of first grooves 121 may be arranged at intervals along the first direction X, and another portion may be arranged at intervals along the circumferential direction of the first body 10 .

[0127] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body 10 and the second body 20 by correspondingly matching a plurality of protrusions 211 arranged at intervals along the first direction X with a plurality of first grooves 121 arranged at intervals along the first direction X.

[0128] Please refer to Figure 6 , Figure 6 Schematic diagram of a pipe connection structure provided for some other embodiments of the present application. In some embodiments, the number of protrusions 211 and the number of first grooves 121 are both multiple, the multiple first grooves 121 are arranged in an array, the multiple protrusions 211 are arranged in an array, and each protrusion 211 is arranged corresponding to each first groove 121.

[0129] In some embodiments, the number of the first grooves 121 may be multiple, and the multiple first grooves 121 may be arranged in an array, that is, a portion of the multiple first grooves 121 may be arranged at intervals along the circumference of the first body 10, and the distances between two adjacent first grooves 121 may be the same. Another portion of the multiple first grooves 121 may be arranged at intervals along the first direction X, and the distances between two adjacent first grooves 121 may be the same.

[0130] In some embodiments, the number of protrusions 211 may be multiple, and the multiple protrusions 211 may be arranged in an array, that is, a portion of the multiple protrusions 211 may be arranged at intervals along the circumference of the first body 10, and the distances between two adjacent protrusions 211 may be the same. Another portion of the multiple protrusions 211 may be arranged at intervals along the first direction X, and the distances between two adjacent protrusions 211 may be the same.

[0131] The technical solution of the embodiment of the present application further improves the reliability of the connection between the first body 10 and the second body 20 by correspondingly cooperating with a plurality of protrusions 211 arranged in an array and a plurality of first grooves 121 arranged in an array.

[0132] Please refer to Figure 4 In some embodiments, the first connection portion 12 is a first groove 121 , and the second connection portion 21 is a protrusion 211 .

[0133] The technical solution of the embodiment of the present application improves the reliability of the connection between the first body 10 and the second body 20 by providing a protrusion 211 on the first body 10 and a first groove 121 on the second body 20.

[0134] Please refer to Figures 3 to 6 In some embodiments, the pipe connection structure 1 further includes a third body 30 , which is annular and sleeved on the outside of the first body 10 . The third body 30 can limit the second body 20 from moving toward the second opening 112 .

[0135] In some embodiments, the third body 30 may be sleeved on the outer circumference of the first body 10 , and the third body 30 may be integrally formed with the first body 10 .

[0136] In some embodiments, the second body 20 is sleeved on the outer circumference of the first body 10 , and one end of the second body 20 away from the first opening 111 may contact the third body 30 , thereby limiting the movement of the second body 20 toward the second opening 112 .

[0137] The technical solution of the embodiment of the present application is to provide a third body 30 sleeved on the first body 10 to restrict the second body 20 from moving toward the second opening 112 , thereby improving the reliability of the connection between the second body 20 and the first body 10 .

[0138] Please refer to Figures 3 to 6 In some embodiments, the third body 30 is provided with a second groove 31 , the second groove 31 is arranged around the first body 10 , and a portion of the second body 20 is embedded in the second groove 31 and contacts the bottom surface of the second groove 31 .

[0139] In some embodiments, the third body 30 has two surfaces in the first direction X, and the surface facing the first opening 111 may be provided with a second groove 31 . The first body 10 passes through the third body 30 , and a portion of the first body 10 is located in the second groove 31 .

[0140] In some embodiments, the second body 20 is sleeved on the outer circumference of the first body 10, and the inner circumference of the second body 20 contacts the outer circumference of the first body 10, at least a portion of the outer circumference of the second body 20 contacts the side wall of the second groove 31, and the surface of the second body 20 facing away from the first opening 111 in the first direction X contacts the bottom wall of the second groove 31.

[0141] In some embodiments, the second body 20 may be completely embedded in the second groove 31 .

[0142] In some embodiments, a portion of the second body 20 may be embedded in the second groove 31 , and another portion may be located outside the second groove 31 .

[0143] According to the technical solution of the embodiment of the present application, a second groove 31 is provided in the third body 30 , and the bottom surface of the second groove 31 contacts the second body 20 , thereby limiting the movement of the second body 20 toward the second opening 112 , thereby improving the reliability of the connection between the second body 20 and the first body 10 .

[0144] Please refer to Figures 3 to 6 In some embodiments, the third body 30 is provided with a plurality of weight-reducing holes 33 .

[0145] In some embodiments, the number of the lightening holes 33 may be two or more.

[0146] In some embodiments, the number of the weight-reducing hole 33 may also be one.

[0147] In some embodiments, the lightening hole 33 may be provided on one surface of the third body 30 in the thickness direction.

[0148] In some embodiments, the lightening holes 33 may penetrate both surfaces of the third body 30 in the thickness direction.

[0149] The distance between the edge of the third body 30 and the third groove 32 may be large, resulting in a low density of the injection material corresponding to the portion of the third body 30 due to poor fluidity of the injection material during the manufacturing process, resulting in poor structural strength of the portion. In some embodiments, by providing the weight-reducing hole 33, the distance between the weight-reducing hole 33 and the edge of the third body 30, and the distance between the weight-reducing hole 33 and the third groove 32 are smaller than the distance between the edge of the third body 30 and the third groove 32, thereby improving the structural strength of the portion corresponding to the second body 20 and improving the reliability of the connection between the second body 20 and the first body 10.

[0150] In some embodiments, the third body 30 is further provided with a connection hole 34 , and a bolt can be passed through the connection hole 34 to be connected to the box body 110 of the battery device 100 .

[0151] The technical solution of the embodiment of the present application is to provide a weight-reducing hole 33 to reduce the mass of the pipe connection structure 1 , thereby reducing the mass of the battery device 100 and improving the energy density of the battery device 100 .

[0152] Please refer to Figure 7 , Figure 7 Schematic diagram of the connection between the pipe connection structure and the box provided in some embodiments of the present application. The embodiment of the present application also provides a battery device 100. The battery device 100 includes a box 110, a thermal management component 120, a first pipe 130 and the pipe connection structure 1 of any of the above embodiments. The box 110 has a mounting hole. The thermal management component 120 is arranged in the box 110. The pipe connection structure 1 is installed in the mounting hole, the first opening 111 is located in the box 110, and the second opening 112 is located outside the box 110. The first pipe 130 connects the first opening 111 and the thermal management component 120.

[0153] In some embodiments, the battery device 100 may further include a battery cell assembly 140 . The battery cell assembly 140 is disposed in the housing 110 , and the thermal management component 120 is used to exchange heat with the battery cell assembly 140 .

[0154] In some embodiments, the pipe connection structure 1 may be used in the battery device 100 to enable the heat management component 120 to exchange heat exchange medium with a container storing the heat exchange medium.

[0155] In some embodiments, the mounting hole may be provided on any wall of the box body 110 .

[0156] In some embodiments, the pipe connection structure 1 may be installed in the installation hole, and the third body 30 of the pipe connection structure 1 may be in contact with the inner wall or the outer wall of the box body 110 .

[0157] In some embodiments, one end of the first pipe 130 may be connected to the first opening 111 , and the other end may be connected to the heat management component 120 .

[0158] In some embodiments, the second opening 112 may be connected to a pipe of a container storing a heat exchange medium to transport the heat exchange medium to the thermal management component 120 , or to transport the heat exchange medium in the thermal management component 120 to the container storing the heat exchange medium.

[0159] The technical solution of the embodiment of the present application connects the first pipe 130 through the pipe connection structure 1 so that the thermal management component 120 is connected to the container storing the heat exchange medium, thereby improving the convenience of transporting the heat exchange medium from the container storing the heat exchange medium to the thermal management component 120.

[0160] Please refer to Figures 3 to 6 In some embodiments, the pipe connection structure 1 further includes a third body 30, which is sleeved on the outside of the first body 10, and is provided with a second groove 31 and a third groove 32. The second groove 31 is provided around the first body 10, and the third groove 32 is provided around the second groove 31. The battery device 100 further includes a seal 40, at least part of which is provided in the third groove 32.

[0161] In some embodiments, the pipe connection structure 1 can be used in the battery device 100, and the pipe connection structure 1 can be installed on the box 110 of the battery device 100. The installation method can be that the box 110 is provided with a mounting hole, and the pipe connection structure 1 is arranged in the mounting hole. The sealing member 40 is arranged in the third groove 32, and one end of the sealing member 40 can contact the wall surface of the third groove 32, and the other end can contact the box 110, thereby improving the sealing performance of the battery device 100.

[0162] In some embodiments, the seal 40 may be entirely disposed within the third groove 32 .

[0163] In some embodiments, the seal 40 may be partially located in the third groove 32 and another portion located outside the third groove 32 .

[0164] In some embodiments, the second groove 31 is located inside the third groove 32 , that is, there is a partition wall between the second groove 31 and the third groove 32 , and the partition wall has two surfaces in the thickness direction, one surface is the wall surface of the second groove 31 , and the other surface is the wall surface of the third groove 32 .

[0165] The seal 40 can be a sealing ring, the inner circumference of the seal 40 contacts the partition wall, at least part of the outer circumference of the sealing ring contacts the inner wall of the third groove 32, and the surface of the seal 40 facing away from the first opening 111 in the first direction X contacts the bottom wall of the third groove 32.

[0166] In some embodiments, a mounting hole is provided on a wall of the box body 110, and the pipe connection structure 1 is provided in the mounting hole. A surface of the third body 30 is in contact with or has a certain gap with the wall provided with the mounting hole. The surface of the third body 30 is provided with a second groove 31 and a third groove 32, and the opening of the third groove 32 faces the wall provided with the mounting hole.

[0167] One end of the sealing member 40 is disposed in the third groove 32 , and the other end is in contact with the wall provided with the mounting hole, thereby achieving sealing between the pipeline connection structure 1 and the box body.

[0168] The technical solution of the embodiment of the present application is to set a seal 40 to improve the sealing between the box body 110 and the pipe connection structure 1, and to set a third groove 32 in the third main body 30 to accommodate the seal 40, thereby reducing the risk of the seal 40 falling off and improving the reliability of the installation of the seal 40.

[0169] An embodiment of the present application further provides an electrical device, comprising the battery device 100 of any of the above embodiments, and the battery device 100 is used to provide electrical energy to the electrical device.

[0170] Please refer to Figures 3 to 6 In some embodiments, the pipeline connection structure 1 includes a first main body 10 and a second main body 20. The first main body 10 has a flow channel 11 for conveying a heat exchange medium. The flow channel 11 has a first opening 111 and a second opening 112 that are relatively arranged. The first opening 111 is used to connect with the first pipeline 130 to achieve communication with the thermal management component 120, and the second opening 112 is used to communicate with a container for storing a heat exchange medium.

[0171] The second body 20 is sleeved on the outer circumference of the first body 10 . When the pipe connection structure 1 is connected to the first pipe 130 , one end of the second body 20 away from the second opening 112 contacts the first pipe 130 , restricting the first pipe 130 from moving toward the second opening 112 .

[0172] In some embodiments, the first body 10 and the second body 20 may be formed by secondary injection molding: the first body 10 is firstly formed by injection molding, and then the second body 20 is formed by injection molding on the outer circumference of the first body 10 .

[0173] In some embodiments, the outer circumference of the first body 10 may be provided with a plurality of first grooves 121 , and the inner circumference of the second body 20 may be provided with a plurality of protrusions 211 , each protrusion 211 is provided corresponding to each first groove 121 , and the protrusion 211 is provided in the first groove 121 .

[0174] According to the technical solution of the embodiment of the present application, the second body 20 is sleeved on the first body 10, and the protrusion 211 cooperates with the first groove 121 to reduce the risk of the second body 20 falling off the first body 10, improve the reliability of the connection between the first body 10 and the second body 20, and improve the reliability of the battery device 100.

[0175] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pipe connection structure for a battery device, characterized in that: include: A first main body having a flow channel therein, wherein the flow channel has a first opening and a second opening arranged opposite to each other, wherein the first opening is used for connecting to a first pipeline; A second body, sleeved on the outer circumference of the first body and located between the first opening and the second opening, the second body being used to restrict the first pipe from moving toward the second opening; The outer circumferential surface of the first body is provided with a first connecting portion, the inner circumferential surface of the second body is provided with a second connecting portion corresponding to the first connecting portion, and the first connecting portion cooperates with the second connecting portion.

2. The pipeline connection structure according to claim 1, characterized in that: One of the first connection portion and the second connection portion is a first groove, and the other of the first connection portion and the second connection portion is a protrusion, and at least a portion of the protrusion is disposed in the first groove.

3. The pipeline connection structure according to claim 2, characterized in that: The number of the protrusions and the number of the first grooves are both multiple, the multiple first grooves are arranged at intervals along the circumference of the first body, the multiple protrusions are arranged at intervals along the circumference of the first body, and each protrusion is correspondingly arranged to each first groove.

4. The pipeline connection structure according to claim 3, characterized in that: The protrusion extends along the circumference of the first body, and the first groove extends along the circumference of the first body.

5. The pipeline connection structure according to claim 3, characterized in that: The protrusion extends along a first direction, and the first groove extends along the first direction, wherein the first direction is parallel to an axial direction of the first body.

6. The pipeline connection structure according to claim 2, characterized in that: The number of the protrusions and the number of the first grooves are both multiple, the multiple first grooves are arranged at intervals along the first direction, the multiple protrusions are arranged at intervals along the first direction, and each protrusion is arranged corresponding to one first groove.

7. The pipeline connection structure according to claim 2, characterized in that: The number of the protrusions and the number of the first grooves are both multiple, the multiple first grooves are arranged in an array, the multiple protrusions are arranged in an array, and each protrusion is correspondingly arranged to each first groove.

8. The pipeline connection structure according to claim 2, characterized in that: The first connection portion is the first groove, and the second connection portion is the protrusion.

9. The pipeline connection structure according to claim 1, characterized in that: The pipeline connection structure also includes a third body, which is annular and sleeved on the outside of the first body. The third body can limit the second body from moving toward the second opening.

10. The pipeline connection structure according to claim 9, characterized in that: The third body is provided with a second groove, the second groove is arranged around the first body, and at least a part of the second body is embedded in the second groove and contacts with the bottom surface of the second groove.

11. The pipeline connection structure according to claim 9, characterized in that: The third body is provided with a plurality of weight-reducing holes.

12. A battery device, characterized in that: include: A box body having a mounting hole; A heat management component is disposed in the box; The pipeline connection structure according to any one of claims 1 to 11, installed in the box, the first opening is located in the box, and the second opening is located outside the box; A first pipe connects the first opening and the thermal management component.

13. An electrical device, characterized in that: The battery device as claimed in claim 12 is used to provide electrical energy to the electrical device.

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