Battery device, connection tube and electric device

Abstract

The embodiment of the application discloses a battery device, a connecting pipe fitting and a power utilization device, which comprise a heat management component, the heat management component forms a heat exchange channel; the connecting pipe fitting is connected with the heat management component; the connecting pipe fitting comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are connected to form a flow channel extending along a first direction; the first connecting piece comprises a first sleeve, the second connecting piece comprises a second sleeve, and the second sleeve is arranged outside the first sleeve; wherein one side of the first sleeve facing the second sleeve is provided with a first limiting part, one side of the second sleeve facing the first sleeve is provided with a second limiting part, and the first limiting part and the second limiting part are matched to limit the relative movement of the first connecting piece and the second connecting piece along the first direction, so that the space occupation of the pipe connection position can be reduced.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically to a battery device, a connecting pipe, and an electrical device. Background Technology

[0002] During the use of various electrical devices, internal components may generate heat or require heating. For example, battery devices may need to be cooled during use and heated during charging. Thermal management of these components often involves heat exchange in the form of fluid exchange.

[0003] However, traditional fluid piping connections require a lot of space, encroaching on the space of other components and increasing usage and transportation costs.

[0004] Therefore, how to reduce the space occupied at pipe connections has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides a battery device, a connecting pipe, and an electrical device, which can reduce the space occupied at pipe connections.

[0006] In a first aspect, a battery device is provided, comprising: a thermal management component containing a fluid; a connecting pipe connected to the thermal management component; the connecting pipe including a first connector and a second connector connected to form a channel for fluid flow extending in a first direction; the first connector including a first sleeve, the second connector including a second sleeve, the second sleeve being sleeved outside the first sleeve; wherein the first sleeve has a first limiting portion on the side facing the second sleeve, and the second sleeve has a second limiting portion on the side facing the first sleeve, the first limiting portion and the second limiting portion cooperating to restrict the relative movement of the first connector and the second connector in the first direction.

[0007] In this embodiment, by providing a limiting part on the side opposite to the pipe wall of the connecting pipe to restrict the relative movement of the first connecting member and the second connecting member along the extension direction, space other than the pipe end can be saved, the height occupied at the pipe end can be reduced, and the weight and volume of the thermal management component can be reduced, thereby saving costs.

[0008] In some embodiments, the second limiting portion includes a first receiving groove, and the connecting pipe further includes a limiting member, a portion of which is received in the first receiving groove, and another portion of which abuts against the first limiting portion, so that the limiting portion restricts the relative movement of the first connecting member and the second connecting member along a first direction.

[0009] In this embodiment, a portion of the limiting member cooperates with the first receiving groove to fix the limiting member, and another portion abuts against the first limiting part, thereby enabling the first connecting member and the second connecting member to be connected without occupying external space. Furthermore, the assembly process through the limiting member is simpler and easier to operate than the direct assembly process of the first connecting member and the second connecting member.

[0010] In some embodiments, the first limiting portion includes a second receiving groove, and another portion of the limiting member is received in the second receiving groove to limit the relative movement of the first connector and the second connector along the first direction.

[0011] In this embodiment of the application, the first limiting part includes a second receiving groove. The other part of the limiting member is accommodated in the second receiving groove, which can make the limiting member reliably abut against the side wall or bottom wall of the second receiving groove, which is beneficial to the stability of the workpiece after assembly.

[0012] In some embodiments, the first limiting portion includes a first protrusion structure disposed on the outer surface of the end of the first sleeve, and another portion of the limiting member is configured to abut against the first protrusion structure, such that the limiting portion restricts the relative movement of the first connector and the second connector along a first direction.

[0013] In some embodiments, the limiting member includes an annular member, and the first connector and the second connector are circular tube structures.

[0014] In some embodiments, the dimension of the limiting member's orthographic projection in the first direction along the second direction is greater than the inner diameter of the second sleeve and smaller than the inner diameter of the second sleeve in the first receiving groove portion.

[0015] In this embodiment, the dimension of the orthographic projection of the limiting member in the first direction along the second direction is greater than the inner diameter of the second sleeve, so that the limiting member can be stuck in the first receiving groove instead of being directly removed from the second sleeve. The dimension of the orthographic projection of the limiting member in the first direction along the second direction is smaller than the inner diameter of the second sleeve in the first receiving groove portion, so that it can be accommodated in the first receiving groove.

[0016] In some embodiments, the dimension of the limiting member projected in the first direction along the second direction is greater than the sum of the inner diameter of the second sleeve and the depth of the first receiving groove and less than the inner diameter of the second sleeve in the first receiving groove portion.

[0017] In this embodiment of the application, when the limiting member may be translated in the first receiving groove, if the dimension of the limiting member's orthographic projection in the first direction along the second direction is greater than the sum of the inner diameter of the second sleeve and the depth of the first receiving groove, even if it is translated to the other end of the first receiving groove, part of the limiting member can still be in the first receiving groove, thereby improving the reliability of the connection between the first connector and the second connector.

[0018] In some embodiments, the limiting member has a through hole extending through the limiting member along a first direction, the through hole surrounding the first sleeve; the orthographic projection of the through hole in the first direction along a second direction is smaller than the outer diameter of the first sleeve and greater than or equal to the inner diameter of the first sleeve.

[0019] In some embodiments, the limiting member includes a fixing portion, a transition portion, and an abutment portion, the transition portion and the abutment portion being located within the area surrounded by the fixing portion, and the transition portion and the abutment portion protruding relative to the fixing portion toward the end of the first sleeve.

[0020] In this embodiment, the transition portion and the abutment portion of the limiting member protrude toward the end of the first sleeve relative to the fixed portion, thereby better bearing the force generated when the first connecting member moves. The limiting member is more stable after being subjected to force and is less prone to breakage, thus improving the structural stability of the connecting pipe.

[0021] In some embodiments, the limiting member includes an elastic member, and at least a portion of the elastic modulus of the limiting member is in the range of 1 GPa ≤ E ≤ 200 GPa.

[0022] In this embodiment, the limiting member includes an elastic member, which is easy to compress. The compressed limiting member has a smaller size in the second direction, which is beneficial for placing the limiting member into the first receiving groove through the opening of the second connector, thus reducing the installation difficulty.

[0023] In some embodiments, the limiting member has a notch in the circumferential direction.

[0024] In this embodiment, the limiting member has a notch in the circumferential direction, which makes it easier for the limiting member to shrink in size and to be more easily inserted into the opening of the second connector during installation. At the same time, the first connector can be more easily assembled with the limiting member.

[0025] In some embodiments, the dimension of the limiting member's orthographic projection in the first direction along the second direction is d1, the inner diameter of the second sleeve is d2, and the circumferential dimension x of the notch along the ring satisfies x > π(d1 - d2).

[0026] In this embodiment, the circumferential dimension x of the notch along the ring satisfies x>π(d1-d2), which allows the diameter of the limiting member to be smaller than the inner diameter d2 of the second sleeve after the notch is compressed, so that it can pass directly through the opening of the second sleeve, which is convenient for assembly.

[0027] In some embodiments, the connecting fitting further includes a third limiting portion configured to restrict the opposing movement of the first connecting member and the second connecting member along a first direction.

[0028] In some embodiments, the third limiting portion includes a second protrusion structure protruding from the outer wall of the first sleeve, the orthographic projection of the second protrusion structure in the first direction covering the orthographic projection of the second sleeve in the first direction.

[0029] In some embodiments, the connecting pipe fitting further includes a sealing component disposed between the first sleeve and the second sleeve, the sealing component being used to seal the gap between the first connector and the second connector.

[0030] In some embodiments, a thermal management component is connected to a heat exchange pipeline. The thermal management component includes a first heat exchange component, which includes a first inlet pipe and a first outlet pipe. A connecting pipe connects the heat exchange pipeline to the first inlet pipe and / or the first outlet pipe.

[0031] In some embodiments, the thermal management component includes a first heat exchange component and a second heat exchange component. The first heat exchange component includes a first inlet pipe and a first outlet pipe, and the second heat exchange component includes a second inlet pipe and a second outlet pipe. The connecting pipe connects the first outlet pipe and the second inlet pipe.

[0032] Secondly, a connecting pipe fitting is provided, including a first connector and a second connector. The first connector and the second connector have a hollow structure that extends through a first direction, and the second connector is disposed on the outside of the first connector. The second connector includes a first sleeve and a second sleeve, and the first sleeve and the second sleeve are disposed opposite to each other along a second direction. A first limiting part is provided on the side of the first sleeve facing the second sleeve, and a second limiting part is provided on the side of the second sleeve facing the first sleeve. The first limiting part and the second limiting part cooperate to restrict the relative movement of the first connector and the second connector along the first direction.

[0033] In some embodiments, the connecting pipe further includes a limiting member, the second limiting portion including a first receiving groove, a portion of the limiting member being received in the first receiving groove, and another portion of the limiting member abutting against the first limiting portion, so that a limiting portion restricts the relative movement of the first connecting member and the second connecting member along a first direction.

[0034] In some embodiments, the first limiting portion includes a second receiving groove, and another portion of the limiting member is received in the second receiving groove to limit the relative movement of the first connector and the second connector along the first direction.

[0035] In some embodiments, the first limiting portion includes a first protrusion structure disposed on the outer surface of the end of the first sleeve, and another portion of the limiting member is configured to abut against the first protrusion structure, such that the limiting portion restricts the relative movement of the first connector and the second connector along a first direction.

[0036] In some embodiments, the limiting member includes an annular member, and the first connector and the second connector are circular tube structures.

[0037] In some embodiments, the dimension of the limiting member's orthographic projection in the first direction along the second direction is greater than the inner diameter of the second sleeve and smaller than the inner diameter of the second sleeve in the first receiving groove portion.

[0038] In some embodiments, the dimension of the limiting member projected in the first direction along the second direction is greater than the sum of the inner diameter of the second sleeve and the depth of the first receiving groove and less than the inner diameter of the second sleeve in the first receiving groove portion.

[0039] In some embodiments, the limiting member has a through hole extending through the limiting member along a first direction, the through hole surrounding the first sleeve; the orthographic projection of the through hole in the first direction along a second direction is smaller than the outer diameter of the first sleeve and greater than or equal to the inner diameter of the first sleeve.

[0040] In some embodiments, the limiting member includes a fixing portion, a transition portion, and an abutment portion, the transition portion and the abutment portion being located within the area surrounded by the fixing portion, and the transition portion and the abutment portion protruding relative to the fixing portion toward the end of the first sleeve.

[0041] In some embodiments, the limiting member includes an elastic member, and at least a portion of the elastic modulus of the limiting member is in the range of 1 GPa ≤ E ≤ 200 GPa.

[0042] In some embodiments, the limiting member has a notch in the circumferential direction.

[0043] In some embodiments, the dimension of the limiting member's orthographic projection in the first direction along the second direction is d1, the inner diameter of the second sleeve is d2, and the circumferential dimension x of the notch along the ring satisfies x > π(d1 - d2).

[0044] In some embodiments, the connecting fitting further includes a third limiting portion configured to restrict the opposing movement of the first connecting member and the second connecting member along a first direction.

[0045] In some embodiments, the third limiting portion includes a second protrusion structure protruding from the outer wall of the first sleeve, the orthographic projection of the second protrusion structure in the first direction covering the orthographic projection of the second sleeve in the first direction.

[0046] In some embodiments, the connecting pipe fitting further includes a sealing component disposed between the first sleeve and the second sleeve, the sealing component being used to seal the gap between the first connector and the second connector.

[0047] In some embodiments, the first connector is a water inlet pipe and the second connector is a water inlet for the thermal management component, or the first connector is a water outlet pipe and the second connector is a water outlet.

[0048] Thirdly, an electrical device is provided, comprising: a battery device according to any implementation of the first aspect, wherein the battery device is used to provide electrical energy.

[0049] In some embodiments, the electrical device is a vehicle, a ship, or a spacecraft. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of a vehicle according to one embodiment of this application;

[0051] Figure 2 This is a schematic diagram of the structure of a battery device according to an embodiment of this application;

[0052] Figure 3 A perspective view of a connecting pipe fitting provided in an embodiment of this application is shown;

[0053] Figure 4 A front view of a connecting pipe fitting provided in an embodiment of this application is shown;

[0054] Figure 5 A cross-sectional view of AA is shown in one embodiment of this application;

[0055] Figure 6 A front view of a connecting pipe fitting provided in one embodiment of this application is shown;

[0056] Figure 7 An exploded view of a connecting pipe fitting provided in another embodiment of this application is shown;

[0057] Figure 8 A front view of a connecting pipe fitting provided in another embodiment of this application is shown;

[0058] Figure 9 A cross-sectional view (AA) of a connecting pipe fitting provided in another embodiment of this application is shown;

[0059] Figure 10 yes Figure 9 Detailed drawing B of the provided connecting pipe fittings;

[0060] Figure 11 A cross-sectional view AA of a connecting pipe fitting provided in another embodiment of this application is shown;

[0061] Figure 12 yes Figure 11 Detailed drawing B of the provided connecting pipe fittings;

[0062] Figure 13 This is an exploded view of a connecting pipe fitting provided in another embodiment of this application;

[0063] Figure 14 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application;

[0064] Figure 15 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application;

[0065] Figure 16 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application;

[0066] Figure 17 yes Figure 14 Detailed drawing B of the provided connecting pipe fittings;

[0067] Figure 18 This is a front view of the connecting pipe fitting provided in another embodiment of this application after installation;

[0068] The accompanying drawings are not drawn to scale. Detailed Implementation

[0069] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0070] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0071] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0072] In this application, the reference to "embodiment" means that a specific 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 mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0074] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0075] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0076] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0077] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0078] During the use of various electrical devices, internal components may generate heat or require heating. For example, battery devices may need to be cooled during use and heated during charging. Thermal management of these components often involves heat exchange in the form of fluid exchange.

[0079] However, traditional fluid piping requires a lot of space, encroaching on the space of other components and increasing the cost of use and transportation.

[0080] To reduce the space occupied by fluid pipelines, especially at pipeline connections, embodiments of this application provide a battery device, a connecting pipe, and an electrical device. The battery device includes a thermal management component that contains fluid. The connecting pipe connects to the thermal management component. The connecting pipe includes a first connector and a second connector, which are connected to form a channel for fluid flow extending in a first direction. The first connector includes a first sleeve, and the second connector includes a second sleeve, which is sleeved outside the first sleeve. A first limiting portion is provided on the side of the first sleeve facing the second sleeve, and a second limiting portion is provided on the side of the second sleeve facing the first sleeve. The first limiting portion and the second limiting portion cooperate to restrict the relative movement of the first connector and the second connector in the first direction.

[0081] In this embodiment, by providing a limiting part on the side opposite to the pipe wall of the connecting pipe to restrict relative movement along the extension direction, space other than the pipe end can be saved, the height occupied at the pipe end can be reduced, and the weight and volume of the thermal management component can be reduced, thereby saving costs.

[0082] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices.

[0083] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0084] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0085] For example, such as Figure 1The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 40, a controller 30, and a battery device 10 can be installed inside vehicle 1. The controller 30 controls the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0086] For example. Figure 2 A partial structural schematic diagram of the battery device 10 according to an embodiment of this application is shown. Figure 2 As shown, the battery device 10 of this application embodiment may include a plurality of battery cells 20 to meet different power usage requirements. The shape of the battery cell 20 in this application embodiment can be set according to actual application. For example, the battery cell 20 can be as follows: Figure 2 The square battery cell shown may also be different. Figure 2 The embodiments of this application are not limited to the circular or other shapes shown.

[0087] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0088] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0089] It should be understood that, such as Figure 2As shown, the battery device 10 of this embodiment may further include a housing 11, which can be used to accommodate multiple battery cells 20. The housing 11 of this embodiment has a hollow interior, and the multiple battery cells 20 are accommodated within the housing 11. The housing 11 may include two parts, referred to herein as a first housing portion 111 and a second housing portion 112, which are fastened together. The shapes of the first housing portion 111 and the second housing portion 112 can be determined according to the shape of the components housed inside, for example, according to the shape of the combination of the multiple battery cells 20 housed inside. At least one of the first housing portion 111 and the second housing portion 112 has an opening. For example, as... Figure 2 As shown, the first housing portion 111 and the second housing portion 112 can both be hollow cuboids with one open side each. The openings of the first housing portion 111 and the second housing portion 112 are opposite to each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20. The multiple battery cells 20 are connected in parallel, series, or mixed and placed inside the housing 11 formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0090] For example, unlike Figure 2 As shown, either the first housing portion 111 or the second housing portion 112 may have only one hollow cuboid with an opening, while the other is plate-shaped to cover the opening. Taking the second housing portion 112 as a hollow cuboid with one opening and the first housing portion 111 as a plate-shaped example, then the first housing portion 111 covers the opening of the second housing portion 112 to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20.

[0091] In some possible embodiments, the battery device 10 may include a thermal management component 120, which may have a heat exchange channel through which a heat exchange medium flows, thereby providing heating or cooling functions for the battery device 10.

[0092] The thermal management component 120 can be disposed inside the battery device 10. For example, the thermal management component 120 can be disposed on the bottom wall of the battery device 10, or it can be disposed between the battery cells 20 to better manage the thermal of the battery cells 20. For example, the thermal management component 120 may include a cooling plate, which can be disposed between the battery cells 20 to provide cooling to the battery cells 20 in the battery device 10 through a heat exchange medium within the cooling plate.

[0093] The thermal management component 120 can also be disposed outside the battery device 10 as an additional component of the battery device 10, and this application embodiment does not limit this.

[0094] The following is combined Figures 3 to 5 This application describes a connecting pipe fitting provided in one embodiment.

[0095] in, Figure 3 A perspective view of a connecting pipe fitting provided in an embodiment of this application is shown. Figure 4 A front view of a connecting pipe fitting provided in an embodiment of this application is shown. Figure 5 A cross-sectional view of AA is shown in one embodiment of this application.

[0096] like Figure 3 The connecting pipe 3 shown can be applied to vehicles and other locations requiring pipe connections. For example, the connecting pipe 3 can connect joints between cooling plates, connect cooling plates to cooling pipes, and connect cooling pipes to other external pipes. This application embodiment does not limit this application. This application embodiment takes the application of the connecting pipe 3 in the flow of heat exchange medium in the thermal management component of the battery device 10 in vehicle 1 as an example. However, this application embodiment is not limited to this. For example, the connecting pipe 3 can also be used for fluid exchange in other pipes of vehicle 1, and for example, it can also be used for the flow of heat exchange medium in pipes of energy storage systems.

[0097] See Figure 3 And further reading Figure 4 and Figure 5 The connecting pipe 3 can connect to the heat management component 120, allowing the heat management component 120 to flow with the heat exchange medium through the connecting pipe 3. The connecting pipe 3 may include a first connector 31 and a second connector 32, which are connected to form a channel for fluid flow extending in a first direction. The first connector 31 includes a first sleeve 311, and the second connector 32 includes a second sleeve 321, which is sleeved outside the first sleeve 311. A first limiting portion 3111 is provided on the side of the first sleeve 311 facing the second sleeve 321, and a second limiting portion 3211 is provided on the side of the second sleeve 321 facing the first sleeve 311. The first limiting portion 3111 and the second limiting portion 3211 can cooperate to restrict the relative movement of the first connector 31 and the second connector 32 in the first direction.

[0098] The connection between the first connector 31 and the second connector 32 to form a channel extending along the first direction means that after the first connector 31 and the second connector 32 are connected, at least a portion of the channel extends along the first direction. The first connector 31 and the second connector 32 themselves may have bent portions, for example... Figure 3The first connector 31 is a pipe with bends. This embodiment of the application takes the connector with bends as an example, but this embodiment of the application is not limited to this.

[0099] The first sleeve 311 may be a part of the first connecting member 31. This application embodiment does not limit the shape of the first sleeve 311. For example, the cross-section of the first sleeve 311 may be circular, in which case the first connecting member 31 is a circular tube. Alternatively, the cross-section of the first sleeve 311 may be rectangular, in which case the first connecting member 31 is a square tube. This application embodiment uses a circular cross-section of the first sleeve 311 as an example, but the cross-section of the first sleeve 311 may also be other shapes, and this application is not limited thereto. The description of the second sleeve 321 can be referred to the first sleeve 311, and this application embodiment will not elaborate further here.

[0100] The second sleeve 321 being fitted outside the first sleeve 311 means that the area enclosed by the second sleeve 321 is located outside the first sleeve 311.

[0101] The first limiting part 3111 is disposed on the side of the first sleeve 311 facing the second sleeve 321, and the second limiting part 3211 is disposed on the side of the second sleeve 321 facing the first sleeve 311. The second sleeve 321 is sleeved on the outside of the first sleeve 311, that is, both the first limiting part 3111 and the second limiting part 3211 are located inside the connecting pipe 3.

[0102] The first limiting part 3111 and the second limiting part 3211 cooperate to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. Alternatively, the first limiting part 3111 and the second limiting part 3211 can directly cooperate to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. For example, Figure 5 As shown, the first limiting part 3111 includes an external thread, and the second limiting part 3211 includes an internal thread. The direct cooperation between the first limiting part 3111 and the second limiting part 3211 can restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0103] Figure 5 This is merely illustrative; the first limiting part 3111 and the second limiting part 3211 can also be other structures. For example, the first limiting part 3111 can be a protruding structure, and the second limiting part 3211 can be a sliding groove. The sliding groove includes a first groove extending in the first reverse direction and a second groove extending in the circumferential direction. The first groove and the second groove are connected, so that the first limiting part 3111 can slide into the second groove through the first groove to limit the relative movement of the first connector 31 and the second connector 32 in the first direction.

[0104] The first limiting part 3111 and the second limiting part 3211 cooperate to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. Alternatively, the first limiting part 3111 and the second limiting part 3211 can cooperate indirectly to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. For example, the first limiting part 3111 and the second limiting part 3211 are connected by other components, and the three cooperate with each other to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0105] The relative movement of the first connector 31 and the second connector 32 along the first direction can refer to the first connector 31 and the second connector 32 moving towards each other or moving away from each other along the first direction.

[0106] In some possible embodiments, the first connector 31 can be a water inlet pipe, and the second connector 32 can be a water inlet. The water inlet pipe is connected to the water inlet to facilitate fluid exchange. The second connector 32 can also be a base with a through hole in the middle for connection to the interior of the thermal management component. For example, the first connector 31 can also be a water outlet pipe, and the second connector 32 can be a water outlet. The water outlet pipe is connected to the water outlet to facilitate fluid exchange. Yet another example is that the first connector 31 can be a water inlet, and the second connector 32 can be a water inlet pipe with a diameter larger than the water inlet, allowing fluid exchange to be achieved by fitting the end of the water inlet pipe around the outside of the water inlet.

[0107] This application provides an exemplary example where the first connector 31 is a water inlet pipe and the second connector 32 is a water inlet or base of the thermal management component 120, but the embodiments of this application are not limited thereto. For example, Figure 6 The first connector 31 is an inlet or base of the thermal management component 120, and the second connector 32 is an example of an inlet pipe.

[0108] Figure 6 A front view of a connecting pipe fitting provided in one embodiment of this application is shown.

[0109] In some possible embodiments, such as Figure 6 As shown, the first connector 31 can also be the water inlet of the thermal management component, and the second connector 32 can also be a water inlet pipe. The second sleeve 321 of the second connector 32 is sleeved on the outside of the first sleeve 311 of the first connector 31. That is, the second connector 32 is a component sleeved on the outside of the first connector 31.

[0110] In this embodiment, the first limiting part 3111 and the second limiting part 3211, which restrict the relative movement of the first connector 31 and the second connector 32 along the first direction, are disposed inside the connecting pipe fitting 3, thereby reducing the external height occupied by the connecting pipe fitting 3. Traditional connecting pipe fittings often adopt a wedge-shaped structure, which requires a partially overturned structure outside the end of the connecting pipe fitting to fix the male connector and the male connector, occupying more height space and increasing transportation and usage costs. However, by using the connecting pipe fitting 3 provided in this embodiment, the weight and volume of the thermal management components can be reduced, thereby saving costs.

[0111] The following is combined Figures 7 to 10 This application describes a connecting fitting provided in another embodiment.

[0112] in, Figure 7 An exploded view of a connecting pipe fitting provided in another embodiment of this application is shown. Figure 8 A front view of a connecting pipe fitting provided in another embodiment of this application is shown. Figure 9 A cross-sectional view (AA) of a connecting pipe fitting provided in another embodiment of this application is shown. Figure 10 yes Figure 9 Detailed drawing B of the provided connecting pipe fittings. Figure 11 A cross-sectional view AA of a connecting pipe fitting provided in another embodiment of this application is shown. Figure 12 yes Figure 11 Detailed drawing B of the provided connecting pipe fittings.

[0113] See Figure 7 And further reading Figures 8 to 12 The connecting pipe 3 and Figures 3 to 5 The difference in the connecting pipe 3 is that the connecting pipe 3 may also include a limiting member 33. The second limiting part 3211 includes a first receiving groove 3212, a part of the limiting member 33 is received in the first receiving groove 3212, and another part of the limiting member 33 abuts against the first limiting part 3111, so that the first limiting part 3111 restricts the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0114] Figures 7 to 12 An exemplary illustration shows that the limiting member 33 includes an annular component, and the first connecting member 31 and the second connecting member 32 include a circular tube structure. The first receiving groove 3212 may include a receiving groove arranged circumferentially along the inner wall of the second sleeve 321, but the embodiments of this application are not limited thereto. For example, the limiting member 33 may include a block structure, a portion of which is received in the first receiving groove 3212, and another portion of which abuts against the first limiting part 3111 to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along a first direction.

[0115] The limiting member 33 can be of other shapes. For example, when the cross-sectional shape of the first sleeve 311 is rectangular, the limiting member 33 can also be a rectangular frame member. The accompanying drawings show the first connector 31 and the second connector 32 as circular tube structures, but the embodiments of this application are not limited thereto.

[0116] The number of limiting components 33 can be one, for example Figures 7 to 12 In this configuration, the limiting member 33 is a circular ring. There can be multiple limiting members 33. When there are multiple limiting members 33, they can respectively abut against the first limiting part 3111, thereby restricting the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. For example, there can be two limiting members 33, which are arranged on both sides of the first sleeve 311 along the second direction, thereby ensuring balanced force on both sides of the first sleeve 311 and improving the reliability of the connection.

[0117] The limiting member 33 can be a separate component or an integral component with the first connector 31 or the second connector 32. For example, the limiting member 33 can be integral with the outer wall of the first connector 31. Optionally, if the limiting member 33 is integral with the outer wall of the first connector 31, the limiting member 33 can be pre-compressed to facilitate easier entry into the first receiving groove 3212. This application does not limit this.

[0118] In some possible embodiments, such as Figures 8 to 10 As shown, the first limiting part 3111 includes a second receiving groove 3112, and another part of the limiting member 33 is received in the second receiving groove 3112 so that the first limiting part 3111 restricts the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0119] In some possible embodiments, such as Figures 11 to 12 As shown, the first limiting part 3111 includes a first protrusion structure 3113 disposed on the outer surface of the end of the first sleeve 311. Another part of the limiting member is configured to abut against the first protrusion structure 3113 so that the first limiting part 3111 restricts the relative movement of the first connector 31 and the second connector 32 along the first direction.

[0120] The accompanying drawings of this application exemplarily illustrate that the limiting member 33 cooperates with the first limiting part 3111 and the second limiting part 3211 to restrict the movement of the first connecting member 31 and the second connecting member 32 away from each other along the first direction. However, the embodiments of this application are not limited thereto. For example, the limiting member 33 may also cooperate with a protruding structure provided on the outer surface of the first sleeve 311 away from the end to restrict the movement of the first connecting member 31 and the second connecting member 32 towards each other along the first direction. For another example, two protruding structures are provided on the outer surface of the first sleeve 311, and the two protruding structures clamp the limiting member 33 to restrict the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0121] The other part of the limiting member 33 abutting against the first limiting part 3111 can refer to the end of the limiting member 33 abutting against the first limiting part 3111. A part of the limiting member 33 is accommodated in the first receiving groove 3212, so that when the first connecting member 31 and the second connecting member 32 move relative to each other in the first direction, it abuts against the side wall of the first receiving groove 3212, thereby restricting further relative movement between the first connecting member 31 and the second connecting member 32.

[0122] See Figure 10 and Figure 12 In some possible embodiments, the dimension of the limiting member 33 in the first direction orthogonal projection along the second direction is greater than the inner diameter of the second sleeve 321 and smaller than the inner diameter of the second sleeve 321 in the first receiving groove 3212 portion.

[0123] In this embodiment, the dimension of the orthographic projection of the limiting member 33 in the first direction along the second direction is greater than the inner diameter of the second sleeve 321, so that the limiting member 33 can be stuck in the first receiving groove 3212 instead of being directly removed from the second sleeve 321. The dimension of the orthographic projection of the limiting member 33 in the first direction along the second direction is smaller than the inner diameter of the second sleeve 321 in the first receiving groove 3212, so that it can be accommodated in the first receiving groove 3212.

[0124] In some possible embodiments, the dimension of the limiting member 33 in the first direction orthogonal projection along the second direction is greater than the sum of the inner diameter of the second sleeve 321 and the depth d0 of the first receiving groove 3212, and less than the inner diameter of the second sleeve 321 in the first receiving groove 3212 portion.

[0125] In this embodiment, the limiting member 33 may translate within the first receiving groove 3212. If the dimension of the limiting member 33 in the first direction along the second direction is greater than the sum of the inner diameter of the second sleeve 321 and the depth of the first receiving groove 3212, even if it translates to the other end of the first receiving groove 3212, a portion of the limiting member 33 will always remain within the first receiving groove 3212, thereby improving the reliability of the connection between the first connector 31 and the second connector 32.

[0126] In some possible embodiments, the limiting member 33 has a through hole extending through the limiting member 33 along a first direction, the through hole surrounding the first sleeve 311. The dimension of the through hole, projected in the first direction along a second direction, is smaller than the outer diameter of the first sleeve 311 and greater than or equal to the inner diameter of the first sleeve 311.

[0127] In this embodiment, the orthographic projection of the through hole in the first direction along the second direction is smaller than the outer diameter of the first sleeve 311, so that the limiting member 33 can abut against the first limiting part 3111. The orthographic projection of the through hole in the first direction along the second direction is greater than or equal to the inner diameter of the first sleeve 311, so that the limiting member 33 can cooperate with the outer wall of the first sleeve 311 without affecting the flow of fluid inside the first sleeve 311.

[0128] In some possible embodiments, the limiting member 33 includes a fixing portion 331, a transition portion 332 and an abutment portion 333, the transition portion 332 and the abutment portion 333 being located in the area surrounded by the fixing portion, and the transition portion 332 and the abutment portion 333 protruding relative to the fixing portion 331 toward the end of the first sleeve 311.

[0129] In some possible embodiments, the limiting member 33 includes an elastic member, and at least a portion of the elastic modulus E of the limiting member 33 is in the range of 1 GPa ≤ E ≤ 200 GPa.

[0130] The elastic modulus E of at least a portion of the limiting member 33 is in the range of 1GPa≤E≤200GPa. This can be the elastic modulus of the entire limiting member 33 being in this range, or it can be that the elastic modulus of a portion of the limiting member 33 is in this range, while the elastic modulus of another portion is higher, thereby improving the overall strength of the limiting member 33.

[0131] In this embodiment, the limiting member 33 includes an elastic member, which makes it easy to compress. The compressed limiting member 33 has a smaller size in the second direction, which is beneficial for placing the limiting member 33 into the first receiving groove 3212 through the opening of the second connector 32, thus reducing the difficulty of installation.

[0132] Furthermore, the elastic modulus E of at least a portion of the limiting member 33 is in the range of 2GPa≤E≤100GPa. Having the elastic modulus E of at least a portion of the limiting member 33 within this range is more conducive to material processing, reducing processing difficulty while providing a certain degree of elasticity.

[0133] The elastic modulus E of at least a portion of the limiting member 33 can also be other values. For example, the elastic modulus E of at least a portion of the limiting member 33 can be any one of the following values ​​or between any two of the following values: 1 GPa, 1.5 GPa, 2 GPa, 2.5 GPa, 3 GPa, 4 GPa, 5 GPa, 6 GPa, 8 GPa, 10 GPa, 13 GPa, 15 GPa, 17 GPa, 20 GPa, 25 GPa, 30 GPa, 40 GPa, 50 GPa, 80 GPa, 100 GPa, 120 GPa, 150 GPa, 180 GPa, and 200 GPa.

[0134] The elastic modulus in this application embodiment can refer to Young's modulus. The Young's modulus of a material can be measured by methods such as pulse excitation method, acoustic resonance method, sound velocity method, and optical lever method. Alternatively, the Young's modulus can be calculated by applying a constant bending stress to the sample to determine its elastic bending deflection. This application does not limit this.

[0135] Figure 13 This is an exploded view of a connecting pipe fitting provided in another embodiment of this application.

[0136] like Figure 13 As shown, the limiting member 33 in the connecting pipe fitting 3 may have a notch 334 in the circumferential direction. For example, Figure 13 The limiting component 33 in the middle has an overall "C" shaped ring structure.

[0137] In this embodiment, the limiting member 33 has a notch 334 in the circumferential direction, which makes it easier for the limiting member 33 to shrink in size and easier to fit into the opening of the second connector 32 during installation. At the same time, the first connector 31 can be more easily assembled with the limiting member 33. The following is in conjunction with Figures 14 to 18 This application describes the assembly process of a connecting pipe fitting provided in one embodiment.

[0138] in, Figure 14 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application. Figure 15 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application. Figure 16 This is an installation diagram of a connecting pipe fitting provided in another embodiment of this application. Figure 17 yes Figure 14 Detailed drawing B of the provided connecting pipe fittings. Figure 18 This is a front view of the connecting pipe fitting provided in another embodiment of this application after installation.

[0139] like Figure 14As shown, after compression, the limiting member 33 can pass through the opening of the second connector 32 and thus enter the first receiving groove 3212 provided in the second connector 32 and provided in the inner wall of the second sleeve 321.

[0140] In some possible embodiments, the dimension of the limiting member 33 projected in the first direction along the second direction is d1, the inner diameter of the second sleeve 321 is d2, and the dimension x of the notch 334 along the circumferential direction of the ring satisfies x>π(d1-d2).

[0141] The circumferential dimension of the notch 334 along the ring can refer to the dimension of the notch 334 along the outer edge, or the circumferential dimension of the notch 334 along the ring can be calculated by multiplying the central angle corresponding to the notch 334 by the radius of the ring. This application does not limit this.

[0142] The circumferential dimension x of the notch 334 along the ring satisfies x>π(d1-d2), which allows the diameter of the limiting member 33 to be smaller than d2 after the notch 334 is compressed, so that it can directly pass through the opening of the second sleeve 321, which is convenient for assembly.

[0143] like Figures 15 to 17 As shown, when the first sleeve 311 portion of the first connector 31 is inserted into the second sleeve 321 and its end contacts the limiting member 33, the outer wall of the first sleeve 311 will open the limiting member 33, thereby allowing the first sleeve 311 to pass through the limiting member 33.

[0144] Furthermore, such as Figure 18 As shown, after the end of the first sleeve 311 passes through the limiting member 33, the limiting member 33 springs back, thereby abutting against the first limiting part 3111 provided on the outer wall of the first sleeve 311 to restrict the movement of the first connector 31 and the second connector 32 away from each other in the first direction.

[0145] like Figure 14-18 As shown, in some possible embodiments, the connecting pipe 3 further includes a third limiting part 341, which is configured to restrict the opposing movement of the first connecting member 31 and the second connecting member 32 along a first direction.

[0146] For example, Figure 14-18 The third limiting portion includes a second protrusion 3411 protruding from the outer wall of the first sleeve 311. The orthographic projection of the second protrusion 3411 in the first direction covers the orthographic projection of the second sleeve 321 in the first direction. When the first connecting member 31 and the second connecting member 32 move towards each other, the end of the second sleeve 321 abuts against the second protrusion 3411, thereby restricting the relative movement of the first connecting member 31 and the second connecting member 32 in the first direction.

[0147] This application provides an exemplary embodiment of the third limiting portion 341, which includes a second protrusion structure 3411 protruding from the outer wall of the first sleeve 311. However, the third limiting portion 341 may have other implementations, and this application is not limited thereto. For example, the third limiting portion 341 may include a third protrusion structure protruding from the inner wall of the second sleeve 321. The orthographic projection of the third protrusion structure in the first direction covers the orthographic projection of the first sleeve 311 in the first direction. Thus, when the first connecting member 31 and the second connecting member 32 move toward each other, the end of the first sleeve 311 abuts against the second protrusion structure 3411, thereby restricting the toward-each-other movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0148] like Figure 18 As shown, in some possible embodiments, the connecting pipe 3 may also include a sealing component 35, which is disposed between the first sleeve 311 and the second sleeve 321. The sealing component 35 can be used to seal the gap between the first connecting member 31 and the second connecting member 32.

[0149] In some possible embodiments, the thermal management component 120 is connected to the heat exchange pipeline. The thermal management component 120 includes a first heat exchange component, which includes a first inlet pipe and a first outlet pipe. The connecting pipe 3 connects the heat exchange pipeline to the first inlet pipe and / or the first outlet pipe.

[0150] In some possible embodiments, the thermal management component 120 further includes a second heat exchange component, which includes a second inlet pipe and a second outlet pipe, and the connecting pipe 3 connects the first outlet pipe and the second inlet pipe.

[0151] The thermal management component 120 may include multiple cooling plates, which are spaced apart and connected to each other by connecting pipes 3 to achieve quick assembly.

[0152] According to certain embodiments of this application, an electrical device 10 is provided. The electrical device 10 may include a thermal management component 120, which includes a heat exchange channel through which fluid can exchange heat with the electrical device 10. A connecting pipe 3 can connect to the thermal management component 120, allowing fluid exchange through the connecting pipe 3. The connecting pipe 3 can connect a heat exchange pipeline to the inlet pipe of the thermal management component, a heat exchange pipeline to the outlet pipe of the thermal management component, or a pipeline between heat exchange components within the thermal management component. The connecting pipe 3 includes a first connector 31 and a second connector 32. The first connector 31 and the second connector 32 are connected to form a channel for fluid flow extending in a first direction. The first connector 31 includes a first sleeve 311, and the second connector 32 includes a second sleeve 321, which is sleeved on the outside of the first sleeve 311. The outer wall of the first sleeve 311 is provided with a second receiving groove 3112, and the inner wall of the second sleeve 321 is provided with a first receiving groove 3212. The limiting member 33 is an annular elastic member, and a notch 334 is provided in the circumferential direction of the limiting member 33, so that the limiting member 33 can contract and expand during assembly. During assembly, after the limiting member 33 contracts, it is inserted into the first receiving groove through the opening of the second sleeve 321. The first sleeve 311 is inserted into the second sleeve 321 and expands the limiting member 33. After the first sleeve 311 passes through, the limiting member 33 springs back. The limiting member 33 has a fixing part 331, a transition part 332, and an abutting part 333. The transition part 332 and the abutting part 333 are located in the area surrounded by the fixing part 331, and the transition part 332 and the abutting part 333 protrude toward the end of the first sleeve 311 relative to the fixing part 331. At this time, a portion of the limiting member 33 is accommodated in the first receiving groove 3212, and another portion is accommodated in the second receiving groove 3112, thereby restricting the separation movement of the first connecting member 31 and the second connecting member 32 along the first direction when they move apart. The abutting portion 333 of the limiting member 33 may also protrude away from the end of the first sleeve 311. In this case, the limiting member 33 may also restrict the opposing movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0153] According to some embodiments of this application, this application also provides an electrical device, including the battery device described in any of the above embodiments, and the battery device is used to provide electrical energy to the electrical device.

[0154] The electrical device can be any of the aforementioned devices or systems that utilize battery devices.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This 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 battery device, characterized by, include: A thermal management component (120) having a heat exchange passage; A connecting fitting (3) is provided, which is connected to the thermal management component (120); The connecting pipe (3) includes a first connector (31) and a second connector (32), the first connector (31) and the second connector (32) being connected to form a flow channel extending in a first direction; The first connector (31) includes a first sleeve (311), and the second connector (32) includes a second sleeve (321), the second sleeve (321) being sleeved on the outside of the first sleeve (311); The first sleeve (311) is provided with a first limiting part (3111) on the side facing the second sleeve (321), and the second sleeve (321) is provided with a second limiting part (3211) on the side facing the first sleeve (311). The first limiting part (3111) and the second limiting part (3211) cooperate to restrict the relative movement of the first connecting member (31) and the second connecting member (32) along the first direction.

2. The battery device according to claim 1, characterized by The second limiting part (3211) includes a first receiving groove (3212), wherein the connecting pipe (3) further includes a limiting member (33), a portion of the limiting member (33) is received in the first receiving groove (3212), and another portion of the limiting member (33) abuts against the first limiting part (3111) so that the limiting part (3111) restricts the relative movement of the first connecting member (31) and the second connecting member (32) along the first direction.

3. The battery device of claim 2, wherein The first limiting part (3111) includes a second receiving groove (3112), and another part of the limiting member (33) is received in the second receiving groove (3112) to limit the relative movement of the first connector (31) and the second connector (32) along the first direction.

4. The battery device of claim 2, wherein The first limiting portion (3111) includes a first protrusion structure (3113) disposed on the outer surface of the end of the first sleeve (311), and another part of the limiting member (33) is configured to abut against the first protrusion structure (3113) so that the limiting portion restricts the relative movement of the first connector (31) and the second connector (32) along the first direction.

5. The battery device according to any one of claims 2 to 4, characterized by, The limiting member (33) includes an annular member, and the first connector (31) and the second connector (32) are circular tube structures.

6. The battery device according to claim 5, characterized in that, The dimension of the limiting member (33) projected in the first direction along the second direction is greater than the inner diameter of the second sleeve (321) and smaller than the inner diameter of the second sleeve (321) in the first receiving groove (3212). The second direction is the thickness direction of the second sleeve (321).

7. The battery device of claim 6, wherein The dimension of the limiting member (33) projected in the first direction along the second direction is greater than the sum of the inner diameter of the second sleeve (321) and the depth of the first receiving groove (3212) and less than the inner diameter of the second sleeve (321) in the portion of the first receiving groove (3212).

8. The battery device according to any one of claims 5 to 7, characterized by, The limiting member (33) has a through hole that extends through the limiting member (33) along the first direction, and the through hole surrounds the first sleeve (311); The orthographic projection of the through hole in the first direction along the second direction is smaller than the outer diameter of the first sleeve (311) and greater than or equal to the inner diameter of the first sleeve (311). The second direction is the thickness direction of the second sleeve (321).

9. The battery device of claim 8, wherein, The limiting member (33) includes a fixing part (331), a transition part (332) and an abutting part (333). The transition part (332) and the abutting part (333) are located in the area surrounded by the fixing part (331), and the transition part (332) and the abutting part (333) protrude toward the end of the first sleeve (311) relative to the fixing part (331).

10. The battery device according to any one of claims 5 to 9, characterized by, The limiting member (33) has a notch (334) in the circumferential direction.

11. The battery device of claim 10, wherein, The dimension of the limiting member (33) projected in the first direction along the second direction is d1, the inner diameter of the second sleeve (321) is d2, and the dimension x of the notch (334) along the circumferential direction of the annulus satisfies x>π(d1-d2). The second direction is the thickness direction of the second sleeve (321).

12. The battery device according to any one of claims 2 to 11, characterized by, The limiting member (33) includes an elastic member, and the elastic modulus E of at least a portion of the limiting member (33) is in the range of 1GPa≤E≤200GPa.

13. The battery device according to any one of claims 1 to 12, characterized by, The connecting pipe fitting (3) also includes: The third limiting part is configured to restrict the opposing movement of the first connector (31) and the second connector (32) along the first direction.

14. The battery device of claim 13, wherein, The third limiting part includes a second protrusion structure (3411) protruding from the outer wall of the first sleeve (311), and the orthographic projection of the second protrusion structure (3411) in the first direction covers the orthographic projection of the second sleeve (321) in the first direction.

15. The battery device according to any one of claims 1 to 14, characterized by, The connecting pipe fitting (3) further includes a sealing component (35), which is disposed between the first sleeve (311) and the second sleeve (321) and is used to seal the gap between the first connecting member (31) and the second connecting member (32).

16. The battery device according to any one of claims 1 to 15, characterized by, The heat management component (120) is connected to the heat exchange pipeline. The heat management component (120) includes a first heat exchange component, which includes a first inlet pipe and a first outlet pipe. The connecting pipe (3) connects the heat exchange pipeline to the first inlet pipe and / or the first outlet pipe.

17. The battery device of any one of claims 1 to 15, wherein, The heat management component (120) includes a first heat exchange component and a second heat exchange component. The first heat exchange component includes a first inlet pipe and a first outlet pipe. The second heat exchange component includes a second inlet pipe and a second outlet pipe. The connecting pipe (3) connects the first outlet pipe and the second inlet pipe.

18. A coupling pipe, characterized by The connecting fitting (3) includes a first connector (31) and a second connector (32), the first connector (31) and the second connector (32) being connected to form a channel extending in a first direction; The second connector (32) includes a first sleeve (311) and a second sleeve (321), the second sleeve (321) being sleeved on the outside of the first sleeve (311); The first sleeve (311) is provided with a first limiting part (3111) on the side facing the second sleeve (321), and the second sleeve (321) is provided with a second limiting part (3211) on the side facing the first sleeve (311). The first limiting part (3111) and the second limiting part (3211) cooperate to restrict the relative movement of the first connecting member (31) and the second connecting member (32) along the first direction.

19. An electrical device, comprising: The electrical device includes a battery device as described in any one of claims 1 to 17, wherein the battery device is used to provide electrical energy to the battery device.

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