Battery device, connecting pipe fitting and electric device

Abstract

The embodiment of the utility model discloses a battery device, a connecting pipe fitting and an electric device, and the battery device comprises a heat management part which 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, and the first connecting piece and the second connecting piece are connected to form a flow channel extending in the first direction; the first connecting piece comprises a first sleeve, the second connecting piece comprises a second sleeve, and the second sleeve is arranged on the outer side of the first sleeve in a sleeving mode; the side, facing the second sleeve, of the first sleeve is provided with a first limiting part, the side, facing the first sleeve, of the second sleeve is provided with a second limiting part, the first limiting part and the second limiting part are matched to limit relative movement of the first connecting piece and the second connecting piece in the first direction, and occupied space at the pipeline connecting position can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery, more particularly to a battery device, a connecting pipe fitting and an electric device. BACKGROUND

[0002] During use, various electric devices may generate heat or need to be heated, for example, a battery device may need to be cooled during use and heated during charging. Heat management of these components is often in the form of fluid exchange.

[0003] However, the conventional fluid pipe connection occupies a large space, which encroaches on the space of other components and increases the use and transportation costs.

[0004] Therefore, how to reduce the space occupation of the pipe connection has become a problem to be solved. TECHNICAL PROBLEM

[0005] The present application provides a battery device, a connecting pipe fitting and an electric device, which can reduce the space occupation of the pipe connection.

[0006] In a first aspect, a battery device is provided, comprising: a heat management component containing a fluid; a connecting pipe fitting connected to 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 channel having a first direction extending for fluid circulation; the first connecting piece comprises a first sleeve, and the second connecting piece comprises a second sleeve, the second sleeve is sleeved outside the first sleeve; wherein a first limiting portion is arranged on a side of the first sleeve facing the second sleeve, a second limiting portion is arranged on a side of the second sleeve facing the first sleeve, and the first limiting portion and the second limiting portion cooperate to limit the relative movement of the first connecting piece and the second connecting piece in the first direction.

[0007] In the present application, by arranging the limiting portion on the opposite side of the pipe wall of the connecting pipe fitting to limit the relative movement of the first connecting piece and the second connecting piece in the extending direction, the space outside the pipe end can be saved, the height occupation of the pipe end is reduced, and the weight and volume of the heat management component are reduced, thereby saving the cost.

[0008] In some embodiments, the second limiting portion comprises a first accommodating groove, and the connecting pipe fitting further comprises a limiting member, a part of the limiting member is accommodated in the first accommodating groove, and another part of the limiting member abuts against the first limiting portion, so that one limiting portion limits the relative movement of the first connecting piece and the second connecting piece in the first direction.

[0009] In the embodiments of the present application, one part of the limiting member cooperates with the first accommodating groove to fix the limiting member, and the other part abuts against the first limiting portion, so that the first connecting member and the second connecting member are connected without occupying external space, and the assembly through the limiting member is simpler than the direct assembly of the first connecting member and the second connecting member, and is convenient to operate.

[0010] In some embodiments, the first limiting portion includes a second accommodating groove, and the other part of the limiting member is accommodated in the second accommodating groove to limit the relative movement of the first connecting member and the second connecting member in the first direction.

[0011] In the embodiments of the present application, the first limiting portion includes a second accommodating groove, and the other part of the limiting member accommodated in the second accommodating groove can reliably abut against the side wall or bottom wall of the second accommodating groove, which is beneficial to the stability of the workpiece after assembly.

[0012] In some embodiments, the first limiting portion includes a first protruding structure arranged on the outer surface of the end portion of the first sleeve, and the other part of the limiting member is configured to abut against the first protruding structure, so that the limiting portion limits the relative movement of the first connecting member and the second connecting member in the first direction.

[0013] In some embodiments, the limiting member includes a circular ring member, and the first connecting member and the second connecting member are circular tube structures.

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

[0015] In the embodiments of the present application, the dimension of the 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 caught by the first accommodating groove instead of being directly taken out of the second sleeve, and the dimension of the projection of the limiting member in the first direction along the second direction is less than the inner diameter of the first accommodating groove portion of the second sleeve, so that the limiting member can be accommodated in the first accommodating groove.

[0016] In some embodiments, the dimension of the projection of the limiting member 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 accommodating groove and less than the inner diameter of the first accommodating groove portion of the second sleeve.

[0017] In the embodiments of the present application, in the case that the limiting member may be translated in the first accommodating groove, when the dimension of the projection of the limiting member 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 accommodating groove, even if the limiting member is translated to the other end of the first accommodating groove, part of the limiting member can still be in the first accommodating groove, which improves the reliability of the connection of the first connecting member and the second connecting member.

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

[0019] In some embodiments, the limiting member comprises a fixed part, a transition part and an abutting part, the transition part and the abutting part are located in a region surrounded by the fixed part, and the transition part and the abutting part protrude towards the end of the first sleeve relative to the fixed part.

[0020] In the embodiments of the present application, the transition part and the abutting part of the limiting member protrude towards the end of the first sleeve relative to the fixed part, so that the force generated when the first connecting piece moves can be better borne, the structure of the limiting member is more stable after being stressed, and the structure stability of the connecting pipe is improved.

[0021] In some embodiments, the limiting member comprises an elastic member, and the elastic modulus of at least part of the limiting member ranges from 1 GPa to 200 GPa.

[0022] In the embodiments of the present application, the limiting member comprises an elastic member, so that it is easy to compress, and the size of the limiting member in the second direction after compression is smaller, which is conducive to placing the limiting member in the first accommodating groove through the opening of the second connecting piece, and reduces the installation difficulty.

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

[0024] In the embodiments of the present application, the limiting member has a notch in the circumferential direction, so that the limiting member can be more easily shrunk in size, and in the installation process, it can be more easily put into the opening of the second connecting piece, and at the same time, the first connecting piece can be more easily assembled with the limiting member.

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

[0026] In the embodiments of the present application, the size x of the notch along the circumferential direction of the annular satisfies x>π(d1-d2), which can make the diameter of the limiting member smaller than the inner diameter d2 of the second sleeve after the notch is compressed, so that the limiting member can directly pass through the opening of the second sleeve, and the assembly is facilitated.

[0027] In some embodiments, the connecting pipe further comprises: a third limiting part configured to limit the opposite movement of the first connecting piece and the second connecting piece along the first direction.

[0028] In some embodiments, the third limiting portion comprises a second protruding structure protruding from the outer wall of the first sleeve, and a projection of the second protruding structure in the first direction covers a projection of the second sleeve in the first direction.

[0029] In some embodiments, the connecting pipe further comprises a sealing component arranged between the first sleeve and the second sleeve, and the sealing component is configured to seal a gap between the first connecting member and the second connecting member.

[0030] In some embodiments, the heat management component is connected to the heat exchange pipeline, and the heat management component comprises a first heat exchange component comprising a first water inlet pipe and a first water outlet pipe, and the connecting pipe connects the heat exchange pipeline and the first water inlet pipe and / or the first water outlet pipe.

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

[0032] In the second aspect, a connecting pipe is provided, comprising a first connecting member and a second connecting member, the first connecting member and the second connecting member have a hollow structure penetrating in a first direction, and the second connecting member is arranged outside the first connecting member; the second connecting member comprises a first sleeve, and the second connecting member comprises a second sleeve, the first sleeve and the second sleeve are arranged opposite in a second direction; wherein a first limiting portion is arranged on a side of the first sleeve facing the second sleeve, a second limiting portion is arranged on a side of the second sleeve facing the first sleeve, and the first limiting portion and the second limiting portion cooperate to limit the relative movement of the first connecting member and the second connecting member in the first direction.

[0033] In some embodiments, the connecting pipe further comprises a limiting member, the second limiting portion comprises a first accommodating groove, and a part of the limiting member is accommodated in the first accommodating groove, and another part of the limiting member abuts against the first limiting portion, so that one limiting portion limits the relative movement of the first connecting member and the second connecting member in the first direction.

[0034] In some embodiments, the first limiting portion comprises a second accommodating groove, and another part of the limiting member is accommodated in the second accommodating groove to limit the relative movement of the first connecting member and the second connecting member in the first direction.

[0035] In some embodiments, the first limiting portion comprises a first protruding structure arranged on the outer surface of the end portion of the first sleeve, and another part of the limiting member is configured to abut against the first protruding structure, so that one limiting portion limits the relative movement of the first connecting member and the second connecting member in the first direction.

[0036] In some embodiments, the limiting member comprises a circular ring member, and the first connecting member and the second connecting member are in a tubular structure.

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

[0038] In some embodiments, the limiting member has a dimension along the second direction of the orthographic projection of the limiting member in the first direction that 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 first receiving groove portion of the second sleeve.

[0039] In some embodiments, the limiting member has a through hole that penetrates the limiting member along the first direction, the through hole surrounds the first sleeve, and the dimension along the second direction of the orthographic projection of the through hole in the first direction is less 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 comprises a fixed portion, a transition portion, and an abutting portion, the transition portion and the abutting portion are located within the area enclosed by the fixed portion, and the transition portion and the abutting portion protrude towards the end of the first sleeve relative to the fixed portion.

[0041] In some embodiments, the limiting member comprises an elastic member, and the elastic modulus of at least a portion of the limiting member ranges from 1 GPa ≤ E ≤ 200 GPa.

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

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

[0044] In some embodiments, the connecting pipe further comprises a third limiting portion configured to limit the relative movement of the first connecting member and the second connecting member in the first direction.

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

[0046] In some embodiments, the connecting pipe further comprises a sealing member disposed between the first sleeve and the second sleeve, and the sealing member is configured to seal the gap between the first connecting member and the second connecting member.

[0047] In some embodiments, the first connecting member is a water inlet pipe, the second connecting member is a water outlet pipe, or the first connecting member is a water outlet pipe, and the second connecting member is a water inlet pipe.

[0048] In a third aspect, a power consuming device is provided, comprising: the battery device in any implementation of the first aspect, wherein the battery device is configured to provide electric power.

[0049] In some embodiments, the power consuming device is a vehicle, a ship, or a spacecraft. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 A schematic view of a vehicle according to an embodiment of the present application;

[0051] Figure 2 A schematic view of a battery device according to an embodiment of the present application;

[0052] Figure 3 A perspective view of a connecting pipe according to an embodiment of the present application is shown;

[0053] Figure 4 A front view of a connecting pipe according to an embodiment of the present application is shown;

[0054] Figure 5 An A-A sectional view according to an embodiment of the present application is shown;

[0055] Figure 6 A front view of a connecting pipe according to an embodiment of the present application is shown;

[0056] Figure 7 An exploded view of a connecting pipe according to another embodiment of the present application is shown;

[0057] Figure 8 A front view of a connecting pipe according to another embodiment of the present application is shown;

[0058] Figure 9 An A-A sectional view of a connecting pipe according to another embodiment of the present application is shown;

[0059] Figure 10 is Figure 9 a detailed view B of a connecting pipe according to the present application;

[0060] Figure 11 An A-A sectional view of a connecting pipe according to yet another embodiment of the present application is shown;

[0061] Figure 12 is Figure 11 a detailed view B of a connecting pipe according to the present application;

[0062] Figure 13 An exploded view of a connecting pipe according to yet another embodiment of the present application is shown;

[0063] Figure 14 An installation schematic view of a connecting pipe according to yet another embodiment of the present application is shown;

[0064] Figure 15 is a schematic view of the installation of the connecting pipe according to another embodiment of the present application;

[0065] Figure 16 is a schematic view of the installation of the connecting pipe according to another embodiment of the present application;

[0066] Figure 17 is Figure 11 is another possible implementation of the detail view B of the connecting pipe according to the present application;

[0067] Figure 18 is a front view of the connecting pipe after installation according to another embodiment of the present application;

[0068] In the drawings, the drawings are not drawn according to the actual proportion. DETAILED DESCRIPTION

[0069] The technical solutions in the embodiments of the present application will be described below with reference to the drawings.

[0070] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0071] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and their any variants are intended to cover the non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish different objects, and are not intended to describe a specific order or primary and secondary relationship.

[0072] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0073] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] The term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0075] In the embodiments of the present application, the same reference signs represent the same components, and for the sake of brevity, the detailed description of the same components is omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device, are only exemplary and should not constitute any limitation on the present application.

[0076] "Multiple" appearing in the present application means more than two (including two), and similarly, "multiple groups" means more than two groups (including two groups), and "multiple pieces" means more than two pieces (including two pieces).

[0077] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form new technical solutions.

[0078] Various electrical equipment may generate heat or need to be heated during use, for example, battery devices may need to be cooled during use and may need to be heated during charging. Heat management of these components is often in the form of fluid exchange for heat exchange.

[0079] However, the traditional fluid pipeline needs to occupy a large amount of space, which encroaches on the space of other components and increases the use and transportation cost.

[0080] To reduce the space occupation of the fluid pipeline, especially the pipeline connection, the embodiments of the present application provide a battery device, a connecting pipe and an electric device. The battery device comprises a thermal management component, the thermal management component contains a fluid; the connecting pipe connects the thermal management component; the connecting pipe comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are connected to form a channel for fluid flow along a first direction; the first connecting piece comprises a first sleeve, the second connecting piece comprises a second sleeve, the second sleeve is sleeved outside the first sleeve; wherein, the side of the first sleeve facing the second sleeve is provided with a first limiting part, the side of the second sleeve facing the first sleeve is provided with a second limiting part, the first limiting part and the second limiting part cooperate to limit the relative movement of the first connecting piece and the second connecting piece along the first direction.

[0081] In the embodiments of the present application, by arranging the limiting part on the opposite side of the pipe wall of the connecting pipe to limit the relative movement along the extension direction, the space outside the end of the pipeline can be saved, the height occupation of the end of the pipeline is reduced, and the weight and volume of the thermal management component are reduced, thereby the cost can be saved.

[0082] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery devices.

[0083] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game machine, an electric automobile toy, an electric ship toy and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator and an electric planer, etc. The embodiments of the present application do not specially limit the above electric devices.

[0084] The following embodiments take the vehicle as an example for convenience of description.

[0085] For example, as shown in FIG. 1, the vehicle comprises a battery device 1, a motor 2, a transmission 3, a drive shaft 4, a wheel 5 and a controller 6. The battery device 1 is connected to the motor 2 through the connecting pipe 7, and the motor 2 is connected to the transmission 3 through the connecting pipe 8. The transmission 3 is connected to the drive shaft 4 through the connecting pipe 9, and the drive shaft 4 is connected to the wheel 5 through the connecting pipe 10. The controller 6 is connected to the battery device 1 through the connecting pipe 11. Figure 1As shown, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 can be provided with a motor 40, a controller 30 and a battery device 10. The controller 30 is used to control the power supply of the motor 40 by the battery device 10. For example, the battery device 10 can be arranged at the bottom, the front or the rear of the vehicle 1. The battery device 10 can be used for power supply of the vehicle 1. For example, the battery device 10 can be used as an operating power source of the vehicle 1, and can be used for the circuit system of the vehicle 1, for example, for the power demand of the vehicle 1 during starting, navigation and operation. In another embodiment of the present application, the battery device 10 can not only be used as an operating power source of the vehicle 1, but also can be used as a driving power source of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0086] For example. Figure 2 As shown, the battery device 10 according to an embodiment of the present application can include a plurality of battery monomers 20 to meet different power requirements. The shape of the battery monomer 20 according to an embodiment of the present application can be set according to actual application. For example, the battery monomer 20 can be a cuboid as shown, or can be a shape different from the circular shape as shown, and the embodiment of the present application is not limited thereto. Figure 2 Figure 2 As shown, the battery device 10 according to an embodiment of the present application can include a plurality of battery monomers 20 to meet different power requirements. The shape of the battery monomer 20 according to an embodiment of the present application can be set according to actual application. For example, the battery monomer 20 can be a cuboid as shown, or can be a shape different from the circular shape as shown, and the embodiment of the present application is not limited thereto. Figure 2

[0087] In an embodiment of the present application, the battery monomer can be a secondary battery. The secondary battery refers to a battery monomer that can be activated by charging after discharging.

[0088] The battery monomer can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., and the embodiment of the present application is not limited thereto.

[0089] It should be understood that Figure 2 ​​As 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 describes an embodiment of the connecting pipe fitting provided by the present application. Figures 3 to 5 The connecting pipe fitting provided by an embodiment of the present application is described.

[0095] Among them, Figure 3 A perspective view of the connecting pipe fitting provided by an embodiment of the present application is shown. Figure 4 A front view of the connecting pipe fitting provided by an embodiment of the present application is shown. Figure 5 An A-A cross-sectional view in an embodiment of the present application is shown.

[0096] As Figure 3 The connecting pipe fitting 3 shown can be applied to vehicles and other locations with pipe connection needs, for example, the connecting pipe fitting 3 can realize the connection of joints between cooling plates, the connecting pipe fitting 3 can also realize the connection of cooling plates and cooling pipes, the connecting pipe fitting 3 can also realize the connection of cooling pipes and other external pipes, and the present application embodiment does not limit this. The present application embodiment takes the application of the connecting pipe fitting 3 to the flow of the heat exchange medium of the thermal management component of the battery device 10 in the vehicle 1 as an example, but the present application embodiment is not limited thereto, for example, the connecting pipe fitting 3 can also be used for fluid exchange of other pipes of the vehicle 1, and for example, the connecting pipe fitting 3 can also be used for the flow of the heat exchange medium of the pipes in the energy storage system.

[0097] Referring to Figure 3 and further referring to Figure 4 and Figure 5 , the connecting pipe fitting 3 can connect the thermal management component 120, so that the thermal management component 120 can flow through the connecting pipe fitting 3 and exchange heat with the heat exchange medium. The connecting pipe fitting 3 can include a first connecting piece 31 and a second connecting piece 32, the first connecting piece 31 and the second connecting piece 32 are connected to form a channel for fluid flow extending in a first direction. The first connecting piece 31 includes a first sleeve 311, the second connecting piece 32 includes a second sleeve 321, and the second sleeve 321 is sleeved outside the first sleeve 311. The side of the first sleeve 311 facing the second sleeve 321 is provided with a first limiting portion 3111, and the side of the second sleeve 321 facing the first sleeve 311 is provided with a second limiting portion 3211, and the first limiting portion 3111 and the second limiting portion 3211 can cooperate to limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction.

[0098] The connection of the first connecting piece 31 and the second connecting piece 32 to form a channel extending in the first direction means that at least part of the channel extending in the first direction exists after the connection of the first connecting piece 31 and the second connecting piece 32, and the first connecting piece 31 and the second connecting piece 32 can have a bent part by themselves, for example Figure 3The first connecting piece 31 in the first connecting pipe 3 is a pipeline with a bend. The embodiments of the present application take the connecting piece with a bend as an example, but the embodiments of the present application are not limited thereto.

[0099] The first sleeve 311 can be a part of the first connecting piece 31. The embodiments of the present application do not limit the shape of the first sleeve 311. For example, the cross section of the first sleeve 311 can be circular, and the first connecting piece 31 is a circular pipe. For another example, the cross section of the first sleeve 311 can be rectangular, and the first connecting piece 31 is a square pipe. The embodiments of the present application take the cross section of the first sleeve 311 as an example, but the cross section of the first sleeve 311 can also be other shapes, and the present application is not limited thereto. The description of the second sleeve 321 can refer to the first sleeve 311, and the embodiments of the present application do not make too much repetition here.

[0100] The second sleeve 321 is sleeved on the outside of the first sleeve 311, which means that the area surrounded by the second sleeve 321 is located on the outside of the first sleeve 311.

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

[0102] The cooperation of the first limiting part 3111 and the second limiting part 3211 to limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction can be that the first limiting part 3111 and the second limiting part 3211 directly cooperate to limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction. For example, as shown in Figure 5 The first limiting part 3111 includes external threads, and the second limiting part 3211 includes internal threads. The direct cooperation of the first limiting part 3111 and the second limiting part 3211 can limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction.

[0103] Figure 5 The first limiting part 3111 and the second limiting part 3211 are only schematic, and can also be other structures. For example, the first limiting part 3111 is a protruding structure, and the second limiting part 3211 is 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 in communication, 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 connecting piece 31 and the second connecting piece 32 in the first direction.

[0104] The cooperation of the first limiting part 3111 and the second limiting part 3211 to limit the relative movement of the first connecting part 31 and the second connecting part 32 in the first direction can also be indirect cooperation of the first limiting part 3111 and the second limiting part 3211 to limit the relative movement of the first connecting part 31 and the second connecting part 32 in the first direction, for example, the first limiting part 3111 and the second limiting part 3211 are connected through other components, and the three cooperate with each other to limit the relative movement of the first connecting part 31 and the second connecting part 32 in the first direction.

[0105] The relative movement of the first connecting part 31 and the second connecting part 32 in the first direction can be the relative movement of the first connecting part 31 and the second connecting part 32 in the first direction or the relative movement of the first connecting part 31 and the second connecting part 32 in the first direction.

[0106] In some possible embodiments, the first connecting part 31 can be a water inlet pipe, and the second connecting part 32 can be a water inlet, the water inlet pipe being connected with the water inlet to exchange fluid. The second connecting part 32 can also be a base, and a through hole is arranged in the middle of the base to be connected with the inside of the heat management component. For another example, the first connecting part 31 can also be a water outlet pipe, and the second connecting part 32 can be a water outlet, the water outlet pipe being connected with the water outlet to exchange fluid. For another example, the first connecting part 31 can be a water inlet, and the second connecting part 32 can be a water inlet pipe, the pipe opening diameter of the water inlet pipe being greater than that of the water inlet, so that the end of the water inlet pipe is sleeved outside the water inlet to exchange fluid.

[0107] The embodiments of the present application exemplarily show the example that the first connecting part 31 is a water inlet pipe and the second connecting part 32 is a water inlet or a base of the heat management component 120, but the embodiments of the present application are not limited to this. For example, Figure 6 The embodiments of the present application exemplarily show the example that the first connecting part 31 is a water inlet pipe and the second connecting part 32 is a water inlet or a base of the heat management component 120, but the embodiments of the present application are not limited to this. For example,

[0108] Figure 6 A front view of the connecting pipe fitting provided by some embodiments of the present application is shown.

[0109] In some possible embodiments, as Figure 6 shown, the first connecting part 31 can also be a water inlet of the heat management component, and the second connecting part 32 can also be a water inlet pipe, and a second sleeve 321 of the second connecting part 32 is sleeved outside a first sleeve 311 of the first connecting part 31. That is, the second connecting part 32 is a component sleeved outside the first connecting part 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-shaped member. The first connecting member 31 and the second connecting member 32 are taken as examples of circular tube structures in the drawings, but the embodiments of the present application are not limited thereto.

[0116] The number of limiting members 33 can be one, for example Figures 7 to 12 In the embodiment, the limiting member 33 is a circular ring-shaped member. The number of limiting members 33 can also be multiple, when the number of limiting members 33 is multiple, the multiple limiting members 33 can abut against the first limiting portion 3111 respectively to limit the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction. For example, the number of limiting members 33 is two, and the two limiting members 33 are arranged on both sides of the first sleeve 311 along the second direction, so that the force on both sides of the first sleeve 311 can be balanced, and the reliability of the connection is improved.

[0117] The limiting member 33 can be a separate component, or can be a component integrated with the first connecting member 31 or the second connecting member 32, for example, the limiting member 33 can be integrated with the outer wall of the first connecting member 31. Alternatively, when the limiting member 33 is integrated with the outer wall of the first connecting member 31, the limiting member 33 can be pre-compressed to facilitate easier entry into the first accommodating groove 3212, which is not limited in the present application.

[0118] In some possible embodiments, as shown in Figures 8 to 10 The first limiting portion 3111 includes a second accommodating groove 3112, and another part of the limiting member 33 is accommodated in the second accommodating groove 3112 to enable the first limiting portion 3111 to limit the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0119] In some possible embodiments, as shown in Figures 11 to 12 The first limiting portion 3111 includes a first protruding structure 3113 arranged on the outer surface of the end portion of the first sleeve 311, and another part of the limiting member is configured to abut against the first protruding structure 3113 to enable the first limiting portion 3111 to limit the relative movement of the first connecting member 31 and the second connecting member 32 along the first direction.

[0120] The embodiment of the present application exemplarily shows that the limiting member 33 cooperates with the first limiting portion 3111 and the second limiting portion 3211 to limit the movement of the first connecting member 31 and the second connecting member 32 away from each other in the first direction. However, the embodiment of the present application is not limited thereto. For example, the limiting member 33 can also cooperate with a protruding structure arranged on the outer surface of the distal end of the first sleeve 311 to limit the movement of the first connecting member 31 and the second connecting member 32 toward each other in the first direction. For another example, two protruding structures are arranged on the outer surface of the first sleeve 311, and the two protruding structures hold the limiting member 33 to limit the relative movement of the first connecting member 31 and the second connecting member 32 in the first direction.

[0121] Another part of the limiting member 33 abutting against the first limiting portion 3111 can refer to the end of the limiting member 33 abutting against the first limiting portion 3111, and a part of the limiting member 33 being accommodated in the first accommodating groove 3212 so as to abut against the side wall of the first accommodating groove 3212 when the first connecting member 31 and the second connecting member 32 move relatively in the first direction, thereby limiting the further relative movement of the first connecting member 31 and the second connecting member 32.

[0122] Referring to Figure 10 and Figure 12 In some possible embodiments, the size of the 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 and less than the inner diameter of the second sleeve 321 at the part of the first accommodating groove 3212.

[0123] In the embodiment of the present application, the size of the 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 accommodating groove 3212 instead of being directly taken out of the second sleeve 321, and the size of the projection of the limiting member 33 in the first direction along the second direction is less than the inner diameter of the second sleeve 321 at the part of the first accommodating groove 3212, so that the limiting member 33 can be accommodated in the first accommodating groove 3212.

[0124] In some possible embodiments, the size of the projection 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 d0 of the first accommodating groove 3212 and less than the inner diameter of the second sleeve 321 at the part of the first accommodating groove 3212.

[0125] In the embodiment of the present application, the limiting member 33 can translate in the first accommodating groove 3212. In the case that the size of the projection 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 accommodating groove 3212, even if the limiting member 33 translates to the other end of the first accommodating groove 3212, there is still part of the limiting member 33 in the first accommodating groove 3212, which improves the reliability of the connection between the first connecting member 31 and the second connecting member 32.

[0126] In some possible embodiments, the limiting member 33 has a through hole penetrating through the limiting member 33 along the first direction, and the through hole surrounds the first sleeve 311. The size of the projection of the through hole along the first direction in the second direction is less 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 the embodiments of the present application, the size of the projection of the through hole along the first direction in the second direction is less than the outer diameter of the first sleeve 311, so that the limiting member 33 can abut against the first limiting portion 3111, and the size of the projection of the through hole along the first direction in 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 fixed portion 331, a transition portion 332, and an abutting portion 333, the transition portion 332 and the abutting portion 333 are located in the area surrounded by the fixed portion, and the transition portion 332 and the abutting portion 333 protrude towards the end of the first sleeve 311 relative to the fixed portion 331.

[0129] In some possible embodiments, the limiting member 33 includes an elastic member, and the elastic modulus E of at least part of the limiting member 33 ranges from 1 GPa to 200 GPa.

[0130] The elastic modulus E of at least part of the limiting member 33 ranging from 1 GPa to 200 GPa can be that the elastic modulus of the entire limiting member 33 is in this range, or that the elastic modulus of part of the limiting member 33 is in this range, and the elastic modulus of another part is higher, thereby improving the overall strength of the limiting member 33.

[0131] In the embodiments of the present application, the limiting member 33 includes an elastic member, so that it is easy to compress, and the size of the compressed limiting member 33 in the second direction is smaller, which is conducive to placing the limiting member 33 in the first accommodating groove 3212 through the opening of the second connecting piece 32, and reduces the installation difficulty.

[0132] Further, the elastic modulus E of at least part of the limiting member 33 ranges from 2 GPa to 100 GPa. The elastic modulus E of at least part of the limiting member 33 in this range is more conducive to material processing, and on the basis of providing a certain elasticity, reduces the processing difficulty.

[0133] The elastic modulus E of at least part of the limiting member 33 can also have other values. For example, the elastic modulus E of at least part of the limiting member 33 can have any one of the following values or be 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 of the embodiments of the present application can refer to the Young's modulus, which can be measured by pulse excitation method, audio frequency resonance method, sound velocity method, optical lever method, or can be calculated by applying a constant bending stress to the sample to determine the elastic bending deflection, which is not limited in the present application.

[0135] Figure 13 is an exploded view of the connecting pipe fitting provided by another embodiment of the present application.

[0136] As shown in Figure 13 , the limiting member 33 in the connecting pipe fitting 3 can have a notch 334 in the circumferential direction. For example, Figure 13 The limiting member 33 in

[0137] In the embodiments of the present application, the limiting member 33 has a notch 334 in the circumferential direction, so that the limiting member 33 can be more easily shrunk in size, and can be more easily put into the opening of the second connecting piece 32 during installation, and at the same time, the first connecting piece 31 can be more easily assembled with the limiting member 33. The assembly process of the connecting pipe fitting provided by an embodiment of the present application will be described below with reference to Figures 14 to 18

[0138] Among them, Figure 14 is a schematic view of the installation of the connecting pipe fitting provided by another embodiment of the present application. Figure 15 is a schematic view of the installation of the connecting pipe fitting provided by another embodiment of the present application. Figure 16 is a schematic view of the installation of the connecting pipe fitting provided by another embodiment of the present application. Figure 17 is Figure 11 another possible implementation of the detailed view B of the connecting pipe fitting provided by the present application. Figure 18 is a front view of the connecting pipe fitting after installation provided by another embodiment of the present application.

[0139] As shown in Figure 14 ​As shown, the limiting member 33 can pass through the opening of the second connecting piece 32 after being compressed, and thus be disposed in the first accommodating groove 3212 provided on the inner wall of the second sleeve 321 of the second connecting piece 32.

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

[0141] The dimension of the gap 334 along the circumferential direction of the annular can refer to the dimension of the gap 334 along the outer edge, or can be calculated by multiplying the central angle of the gap 334 by the radius of the annular, and the application does not make any limitation in this regard.

[0142] The dimension x of the gap 334 along the circumferential direction of the annular satisfies x>π(d1-d2), which can make the diameter of the limiting member 33 smaller than d2 after the gap 334 is compressed, so that the limiting member 33 can directly pass through the opening of the second sleeve 321, facilitating assembly.

[0143] As shown in FIG. 3, Figures 15 to 17 When the first sleeve 311 of the first connecting piece 31 is partially inserted into the second sleeve 321 and the end portion is in contact with the limiting member 33, the outer wall of the first sleeve 311 will expand the limiting member 33, so that the first sleeve 311 can pass through the limiting member 33.

[0144] Further, as shown in FIG. 3, Figure 18 After the end portion of the first sleeve 311 passes through the limiting member 33, the limiting member 33 rebounds, so as to abut against the first limiting portion 3111 provided on the outer wall of the first sleeve 311 to limit the movement of the first connecting piece 31 and the second connecting piece 32 away from each other along the first direction.

[0145] As shown in FIG. 3, Figure 14-18 In some possible embodiments, the connecting pipe 3 further comprises a third limiting portion 341, which is configured to limit the movement of the first connecting piece 31 and the second connecting piece 32 toward each other along the first direction.

[0146] Exemplarily, Figure 14-18 The third limiting portion comprises a second protruding structure 3411 protruding from the outer wall of the first sleeve 311, and the projection of the second protruding structure 3411 along the first direction covers the projection of the second sleeve 321 along the first direction. When the first connecting piece 31 and the second connecting piece 32 move toward each other, the end portion of the second sleeve 321 abuts against the second protruding structure 3411, thereby limiting the movement of the first connecting piece 31 and the second connecting piece 32 toward each other along the first direction.

[0147] The third limiting part 341 may, for example, include a third protruding structure protruding from the inner wall of the second sleeve 321, and a projection of the third protruding structure in the first direction covers a projection of the first sleeve 311 in the first direction, so that when the first connecting member 31 and the second connecting member 32 move towards each other, the end of the first sleeve 311 abuts against the second protruding structure 3411, thereby limiting the movement of the first connecting member 31 and the second connecting member 32 in the first direction.

[0148] As shown in FIG. 1, in some possible embodiments, the connecting pipe member 3 may Figure 18 also include a sealing part 35, which is arranged between the first sleeve 311 and the second sleeve 321, and the sealing part 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 heat management part 120 is connected to a heat exchange pipeline, and the heat management part 120 includes a first heat exchange part, the first heat exchange part includes a first water inlet pipe and a first water outlet pipe, and the connecting pipe member 3 connects the heat exchange pipeline and the first water inlet pipe and / or the first water outlet pipe.

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

[0151] The heat management part 120 can include a plurality of cooling plates, and the plurality of cooling plates are arranged at intervals, and the cooling plates are connected through the connecting pipe member 3 to achieve quick plug connection, thereby achieving rapid assembly.

[0152] According to some embodiments of the present application, the present application provides an electric device 10, which can comprise a heat management component 120, the heat management component 120 comprising heat exchange channels, through which fluid can exchange heat with the electric device 10. A connecting pipe 3 can connect the heat management component 120, so that the heat management component 120 exchanges fluid through the connecting pipe 3. The connecting pipe 3 can connect the heat exchange pipe with the water inlet pipe of the heat management component, or connect the heat exchange pipe with the water outlet pipe of the heat management component, or connect the pipes between the heat exchange components in the heat management component. The connecting pipe 3 comprises a first connecting piece 31 and a second connecting piece 32. The first connecting piece 31 is connected with the second connecting piece 32 to form a channel for fluid flow in a first direction. The first connecting piece 31 comprises a first sleeve 311, and the second connecting piece 32 comprises a second sleeve 321, which is sleeved outside the first sleeve 311. The outer wall of the first sleeve 311 is provided with a second accommodating groove 3112, and the inner wall of the second sleeve 321 is provided with a first accommodating groove 3212. The limiting member 33 is a circular ring-shaped elastic member, and the circumferential direction of the limiting member 33 is provided with a notch 334, so that the limiting member 33 can be contracted and expanded when assembled. When assembled, the limiting member 33 is contracted and put into the first accommodating groove from the opening of the second sleeve 321, the first sleeve 311 is inserted into the second sleeve 321 and expands the limiting member 33, and the limiting member 33 rebounds after the first sleeve 311 passes. The limiting member 33 comprises a fixed 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 fixed part 331, and the transition part 332 and the abutting part 333 protrude towards the end of the first sleeve 311 relative to the fixed part 331. At this time, part of the limiting member 33 is accommodated in the first accommodating groove 3212, and the other part is accommodated in the second accommodating groove 3112, so as to limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction when the first connecting piece 31 and the second connecting piece 32 move away from each other in the first direction. The abutting part 333 of the limiting member 33 can also protrude away from the end of the first sleeve 311, at this time, the limiting member 33 can also limit the relative movement of the first connecting piece 31 and the second connecting piece 32 in the first direction.

[0153] According to some embodiments of the present application, the present application also provides an electric device, which comprises the battery device of any of the above-mentioned schemes, and the battery device is used to provide electric energy for the electric device.

[0154] The electric device can be a device or system of any of the above-mentioned application battery devices.

[0155] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. 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 battery device, characterized in that, include: A thermal management component (120) having a heat exchange passage; Connecting fitting (3), the connecting fitting (3) is connected to the thermal management component (120); The connecting fitting (3) includes a first connector (31) and a second connector (32), which are 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 in that, The second limiting part (3211) includes a first receiving groove (3212), wherein the connecting pipe (3) further includes a limiting member (33), 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 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 according to claim 2, characterized in that, 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 according to claim 2, characterized in that, 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 portion 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 claim 2, characterized in that, 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 according to claim 6, characterized in that, 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 claim 5, characterized in that, 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 according to claim 8, characterized in that, 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 claim 5, characterized in that, The limiting member (33) has a notch (334) in the circumferential direction.

11. The battery device according to claim 10, characterized in that, 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 claim 2, characterized in that, 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 claim 1, characterized in that, 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 according to claim 13, characterized in that, 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 claim 1, characterized in that, 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 in that, 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 according to any one of claims 1 to 15, characterized in that, 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 connecting pipe fitting, characterized in that, The connecting fitting (3) includes a first connector (31) and a second connector (32), which are 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 appliance, characterized in that, 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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