Battery device and pipeline connecting assembly

Abstract

The utility model provides a battery device and a pipeline connecting assembly. The battery device comprises a plurality of battery monomers, at least one pipeline connecting assembly and a plurality of liquid cooling plates arranged at intervals, wherein every two adjacent liquid cooling plates are communicated through at least one pipeline connecting assembly; the pipeline connecting assembly comprises a connecting joint which is communicated with the liquid cooling plate; the connecting pipe is provided with a first pipe section and a second pipe section which are communicated with each other, and the first pipe section and the second pipe section are obliquely arranged at a first preset angle; the connecting pipe comprises a sealing pipe and an outer pipe arranged outside the sealing pipe in a sleeving mode. And the connecting joint is inserted into the sealing pipe and is communicated with the sealing pipe. The battery device can meet the position requirements of different connection interfaces of the liquid cooling plate; the product structure is simplified, the axial size of the connecting pipe is reduced, and the pipeline connecting assembly can be conveniently used in a small space. In addition, the connecting pipe has the floatable and deformable functions, and communication and sealing of the connecting joint and the connecting pipe can be achieved conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery device and a pipeline connection assembly. Background Art

[0002] At present, safety accidents of electric vehicles occur frequently. Among them, one of the major factors causing electric vehicle safety accidents is the spontaneous combustion of the battery. Therefore, the cooling of the battery pack is particularly important. The existing liquid cooling system usually includes a liquid cooling plate and a pipeline connection assembly, and the coolant flows into the liquid cooling plate through the pipeline connection assembly to cool the battery pack.

[0003] However, the structure of the existing pipeline connection assembly is complex and the axial dimension is large, making it difficult to be used in the case of a small space dimension. Summary of the Utility Model

[0004] The battery device and the pipeline connection assembly provided by this application aim to solve the problem that the pipeline connection assembly of the existing battery device has a complex structure and a large axial dimension, making it difficult to be used in the case of a small space dimension.

[0005] To solve the above technical problems, a technical solution adopted by this application is: to provide a battery device. The battery device includes:

[0006] A plurality of battery cells;

[0007] At least one pipeline connection assembly and a plurality of liquid cooling plates arranged at intervals, and adjacent two of the liquid cooling plates are connected through at least one of the pipeline connection assemblies; wherein, the pipeline connection assembly includes:

[0008] A connection joint, which is communicated with the liquid cooling plate;

[0009] A connecting pipe, having a first pipe section and a second pipe section that are communicated with each other, and the first pipe section and the second pipe section are arranged obliquely at a first preset angle; wherein, the connecting pipe includes a sealed pipe and an outer pipe sleeved outside the sealed pipe; the connection joint is inserted into the sealed pipe and is communicated with the sealed pipe.

[0010] The above scheme can meet the position requirements of different connection interfaces of the liquid cooling plate by making the first pipe section and the second pipe section tilted at a first preset angle; and compared with the scheme in which the first pipe section and the second pipe section are distributed in a straight line, the axial dimension of the connecting pipe can be reduced, which is convenient for the use of the pipe connection assembly in a smaller space. In addition, the pipe connection assembly can save the adapter, simplify the product structure, and further reduce the axial dimension of the connecting pipe by setting the sealing tube used to achieve the sealing effect between the connecting joint and the outer tube together with the outer tube sleeve, compared with the scheme of adding an adapter to achieve the connection and sealing between the connecting joint and the outer tube. Moreover, by inserting the connecting joint into the sealing tube, the connecting joint can be sealed with the sealing tube of the connecting tube by interference fit, and the sealing reliability is better; and the connecting tube has the function of floating and deforming, which is convenient for realizing the connection and sealing between the connecting joint and the connecting tube.

[0011] In one embodiment of the present application, the connecting pipe further includes a reinforcing structure, which is disposed on a side of the outer pipe away from the sealing pipe and is located outside a connection between the first pipe segment and the second pipe segment.

[0012] The above solution can increase the rigidity of the connecting pipe by reinforcing the structure, thereby reducing the risk of deformation of the connection between the first pipe section and the second pipe section due to excessive internal pressure.

[0013] In one embodiment of the present application, the reinforcement structure includes at least one reinforcement rib, and the at least one reinforcement rib is arranged at intervals along the circumferential direction of the connecting pipe, and part of the reinforcement rib extends to the first pipe segment, and part of the reinforcement rib extends to the second pipe segment.

[0014] The above scheme can reduce the risk of deformation of the connection between the first pipe segment and the second pipe segment due to excessive internal pressure through at least one reinforcing rib, and compared with the scheme in which the reinforcing structure is a continuous plate structure, the at least one reinforcing rib arranged at intervals has less effect on the bending stress of the connecting pipe, which can reduce the risk of cracks or breakage at the bending point of the connecting pipe.

[0015] In one embodiment of the present application, the connecting pipe also has at least one third pipe segment, and the at least one third pipe segment is connected to the first pipe segment at an interval and communicates with the first pipe segment; wherein, at least one of the third pipe segments is coaxially arranged with the first pipe segment, and the extension direction of the third pipe segment is opposite to the extension direction of the first pipe segment; and / or the third pipe segment and the second pipe segment are connected to the same side of the first pipe segment, and the third pipe segment and the first pipe segment are inclined at a second preset angle.

[0016] In the above solution, by making the connecting pipe further include at least one third pipe section, at least a three-way form of the connecting pipe can be achieved. After the connecting pipe is connected to the corresponding connecting joint, at least a three-way form of the pipeline connecting assembly can be achieved, so as to meet the connection with different numbers of connection interfaces of the liquid cooling plate; the pipeline connecting assembly can be directly connected to the connection interfaces of the liquid cooling plate. In addition, by making at least one of the third pipe sections coaxial with the first pipe section, and the extending direction of the third pipe section is opposite to the extending direction of the first pipe section; and / or the third pipe section is connected to the same side of the first pipe section as the second pipe section, and the third pipe section is inclined at a second preset angle with respect to the first pipe section, multiple passages of the connecting pipe can be distributed at different angles, so as to meet the connection with connection interfaces at different angles of the liquid cooling plate, and thus it can be used in the case of a small space size.

[0017] In an embodiment of the present application, the first preset angle and / or the second preset angle is greater than or equal to 90° and less than 180°.

[0018] The above solution can reduce the bending stress of the connecting pipe and facilitate the integral injection molding of the connecting pipe.

[0019] In an embodiment of the present application, at least one of the first pipe section, the second pipe section, and the at least one third pipe section further includes a limiting rib, and the limiting rib protrudes from the outer wall surface of the side wall of the corresponding pipe section and extends along the circumferential direction of the corresponding pipe section.

[0020] In the above solution, by correspondingly arranging limiting ribs outside each pipe section, when using an external tooling to assemble each pipe section with the corresponding connecting joint, the external tooling can be positioned and supported by the limiting rib, so as to facilitate the assembly of the corresponding pipe section and the connecting joint.

[0021] In an embodiment of the present application, at least one of the first pipe section, the second pipe section, and the at least one third pipe section has a guiding portion; the connecting joint has an insertion end, and the insertion end passes through the guiding portion and is inserted into the corresponding pipe section; wherein, the caliber of the guiding portion gradually decreases in the direction away from the connecting joint, and the maximum caliber of the guiding portion is greater than the outer diameter of the insertion end of the corresponding connecting joint.

[0022] In the above solution, by making the maximum caliber of the guiding portion greater than the outer diameter of the insertion end of the corresponding connecting joint, when assembling the connecting joint with the corresponding pipe section, it is convenient for the connecting joint to be inserted into the corresponding pipe section, and even if there is an assembly error within a certain range between the connecting joint and the corresponding pipe section, it can be ensured that the connecting joint is smoothly inserted into the corresponding pipe section.

[0023] In one embodiment of the present application, the first pipe section, the second pipe section, and the at least one third pipe section are integrally injection-molded; and / or the sealed pipe and the outer pipe are integrally injection-molded.

[0024] In the above solution, by integrally injection-molding the first pipe section, the second pipe section, and the at least one third pipe section, the connection strength of each pipe section of the connecting pipe can be improved, and the sealing performance at the connection between two adjacent pipe sections can be improved. Additionally, by integrally injection-molding the sealed pipe and the outer pipe, the adhesion between the outer pipe and the sealed pipe can be better, and it is not easy to separate from the sealed pipe during actual use, thereby reducing the failure risk of the connecting pipe.

[0025] In one embodiment of the present application, the connection joint includes a limiting platform, a connecting portion, and an insertion end that are sequentially connected and in communication with each other; the limiting platform is configured to be connected to the liquid cooling plate; the outer diameter of the connecting portion is greater than the inner diameter of the sealed pipe and less than the outer diameter of the end of the insertion end close to the connecting portion, and a sealing boss is defined between the connecting portion and the insertion end.

[0026] In the above solution, by forming a sealing boss on the connection joint and making the outer diameter of the sealing boss greater than the inner diameter of the sealed pipe, after the connection joint is inserted into the sealed pipe, the sealing boss and the sealed pipe are in interference fit, which can further improve the connection sealing performance between the connection joint and the connecting pipe.

[0027] To solve the above technical problems, another technical solution adopted in the present application is: to provide a pipeline connection assembly, which includes:

[0028] A connection joint for communicating with the liquid cooling plate;

[0029] A connecting pipe having a first pipe section and a second pipe section that are in communication with each other, and the first pipe section and the second pipe section are inclined at a first preset angle; wherein, the connecting pipe includes a sealed pipe and an outer pipe sleeved outside the sealed pipe; the connection joint is inserted into the sealed pipe and is in communication with the sealed pipe.

[0030] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0032] Figure 1 Schematic structural diagram of the electrical equipment provided for this application;

[0033] Figure 2 Schematic structural diagram of the battery device provided for some embodiments of this application;

[0034] Figure 3 Overall structural schematic diagram of the pipeline connection assembly provided for the first embodiment of this application;

[0035] Figure 4 is Figure 3 Overall structural schematic diagram of the pipeline connection assembly shown from another perspective;

[0036] Figure 5 is Figure 4 A - A sectional view of the pipeline connection assembly shown;

[0037] Figure 6 is Figure 3 Disassembly schematic diagram of the pipeline connection assembly shown;

[0038] Figure 7 Disassembly schematic diagram of the connecting pipe provided for an embodiment of this application;

[0039] Figure 8 Overall structural schematic diagram of the pipeline connection assembly provided for the second embodiment of this application;

[0040] Figure 9 Overall structural schematic diagram of the pipeline connection assembly provided for the third embodiment of this application;

[0041] Figure 10 Overall structural schematic diagram of the pipeline connection assembly provided for the fourth embodiment of this application;

[0042] Figure 11 Overall structural schematic diagram of the pipeline connection assembly provided for the fifth embodiment of this application;

[0043] Figure 12 Overall structural schematic diagram of the pipeline connection assembly provided for the sixth embodiment of this application;

[0044] Figure 13 Structural sketch of the pipeline connection assembly provided for an embodiment of this application.

[0045] Description of reference numerals

[0046] 100 Electrical device;

[0047] 200 Battery device; 201 Battery cell; 202 Liquid cooling system; 2021 Liquid cooling plate; 2022 Pipe connector;

[0048] 300 Pipeline connection assembly; 10 Connection joint; 11 Limit platform; 12 Connection part; 13 Insertion end; 14 Sealing boss; 20 Connection pipe; 21 First pipe section; 22 Second pipe section; 23 Third pipe section; 24 Sealing pipe; 25 Outer pipe; 26 Reinforcing structure; 261 Reinforcing rib; 27 Limit rib; 28 Guide part; m Inner side; n Outer side. Specific embodiments

[0049] The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0051] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise specifically defined.

[0052] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0053] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0054] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0055] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0057] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydraulic, thermal, wind, and solar power stations, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0058] Regardless of the shape of the battery, the influence of temperature on it cannot be underestimated. Different temperatures will affect the safety, life, function, performance, etc. of power batteries. When the temperature is too high or too low, problems such as thermal runaway, serious attenuation of life, and charge and discharge limitations may occur in power batteries. Therefore, in order to keep power batteries operating within a reasonable temperature range, it is generally necessary to use a battery thermal management system to adjust the temperature of the battery in actual use. According to different heat transfer media, battery thermal management systems can be divided into air cooling systems, liquid cooling systems, heat pipe cooling systems, phase change cooling systems, etc. Among them, the liquid cooling system has better cooling effect than the air cooling system, lower cost compared with the heat pipe cooling system and the phase change cooling system, and has the advantages of stability and high efficiency, so it is widely used.

[0059] Liquid cooling system, also known as liquid cooling system, uses coolant as heat exchange carrier, and uses liquid pump and liquid cooling pipeline to complete the flow of coolant in the battery system. It is divided into direct contact and indirect contact. Direct contact cooling is to immerse the battery assembly directly in the cooling liquid; indirect contact cooling is to arrange a liquid cooling plate in the battery assembly, through which the liquid cooling plate is in direct contact with the battery cells in the battery assembly, and then through heat exchange, the liquid in the liquid cooling plate takes away the heat emitted by the battery cells.

[0060] In the related art, a liquid cooling plate is respectively arranged on both sides of the battery assembly, so that the plate surface of the liquid cooling plate contacts the side surface of the battery cell in the battery assembly, and two adjacent liquid cooling plates are connected through a connecting pipe to form a parallel liquid circuit with multiple liquid cooling plates in parallel, and then the parallel liquid circuit is connected to the external liquid supply system through a liquid inlet pipe and a liquid discharge pipe. During use, the external liquid supply system provides cooling liquid to the parallel liquid circuit through the liquid inlet pipe, and then the cooling liquid enters each liquid cooling plate through the liquid inlet pipe and the pipe connection assembly, and then takes away the heat emitted by the battery cell by flowing in the liquid cooling plate, thereby achieving the purpose of cooling the battery cell.

[0061] However, the existing liquid cooling system generally uses a quick-plug structure to achieve quick disassembly and assembly of the pipe and the liquid cooling plate interface. The pipe connection structure is relatively complex and has a large axial dimension. In addition, since the connecting pipe and the connecting joint are hard-connected, when there is an assembly error between the connecting pipe and the connecting joint, it will make the installation of the two more difficult.

[0062] To this end, an embodiment of the present application provides a pipe connection assembly. By tilting the first pipe section and the second pipe section of the connecting pipe at a first preset angle and sleeve the sealing pipe and the outer pipe together, the quick-insert structure adapter can be eliminated to simplify the product structure, and the axial dimension of the connecting pipe can be reduced, thereby facilitating the use of the pipe connection assembly in a smaller space.

[0063] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0064] See also Figure 1 , Figure 1 A schematic diagram of the structure of an electric device provided in the present application. In one embodiment, an electric device is provided, the electric device comprising an electric device 100 and a battery device 200, and the battery device 200 is electrically connected to the electric device 100. The battery device 200 is used to provide electric energy to the electric device so that the electric device 100 can work.

[0065] The electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, a range-extended electric vehicle, etc. The spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc. The electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator, a planer, etc. For the convenience of description in the following embodiments, the electrical device is taken as an example of a vehicle for illustration.

[0066] The electrical component 100 can be an element or device that can use electricity; the electrical component 100 can be a controller and electronic components, etc., and the controller can be a central processing unit (Central Processing Unit, abbreviated as CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0067] In some examples, the electrical device can be a vehicle, and the electrical component 100 can be a lamp of the vehicle (such as a headlamp, a taillight, etc.), a display screen, an instrument panel, a control system (such as a controller), etc. The vehicle can also include a vehicle frame, and both the battery device 200 and the electrical component 100 are installed on the vehicle body.

[0068] Please refer to Figure 2 , Figure 2 which is a schematic structural diagram of the battery device provided by some embodiments of the present application. The battery device 200 includes battery cells 201 and a liquid cooling system 202. Among them, there can be multiple battery cells 201, and the multiple battery cells 201 can be connected in series, in parallel or in a series-parallel combination. The series-parallel combination means that there are both series and parallel connections among the multiple battery cells 201. The battery device 200 can also include other structures. For example, the battery device 200 can also include a busbar component for realizing the electrical connection between the multiple battery cells 201. Each battery cell 201 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but not limited thereto. The battery cell 201 can be in a cylindrical shape, a flat shape, a cuboid shape or other shapes, etc.

[0069] Generally, there are multiple battery cells 201 in the battery device 200, and the multiple battery cells 201 are arranged in a two-dimensional array, and there is a gap between adjacent two columns.

[0070] The liquid cooling system 202 includes a plurality of liquid cooling plates 2021 and a plurality of pipe connectors 2022. Among them, the plurality of liquid cooling plates 2021 are arranged side by side and at intervals. Two adjacent liquid cooling plates 2021 are connected through a pipe connector 2022. At least one pipe connector 2022 is the pipeline connection assembly 300 provided in the embodiments of the present application.

[0071] In use, a liquid cooling plate 2021 can be placed on each side of each column of battery cells 201, and the liquid cooling plate 2021 is in thermal contact with the surface of the battery cell 201. Then, two adjacent liquid cooling plates 2021 are connected through the pipeline connection assembly 300. Finally, the combined liquid path formed by combining all the liquid cooling plates 2021 and the pipe connectors 2022 is connected to the liquid inlet pipe and the liquid outlet pipe.

[0072] Hereinafter, taking the application of the pipeline connection assembly 300 to the battery device 200 and its cooperation with the liquid cooling plate 2021 as an example, the pipeline connection assembly 300 provided by the present application will be described.

[0073] In some embodiments, refer to Figures 3 to 7 , Figure 3 is a schematic diagram of the overall structure of the pipeline connection assembly provided in the first embodiment of the present application; Figure 4 is Figure 3 a schematic diagram of the overall structure of the pipeline connection assembly shown from another perspective; Figure 5 is Figure 4 a sectional view taken along the A-A direction of the pipeline connection assembly shown; Figure 6 is Figure 3 a disassembled schematic diagram of the pipeline connection assembly shown; Figure 7 is a disassembled schematic diagram of the connecting pipe provided in an embodiment of the present application. The dotted lines in the figure only represent the demarcation lines of the first pipe section 21 and the second pipe section 22, and do not represent the actual structure of the connecting pipe 20.

[0074] The battery device 200 includes a plurality of battery cells 201, at least one pipeline connection assembly 300, and a plurality of liquid cooling plates 2021 arranged at intervals. Two adjacent liquid cooling plates 2021 are connected through at least one pipeline connection assembly 300. The pipeline connection assembly 300 includes a connection joint 10 and a connecting pipe 20. The connection joint 10 is connected to the liquid cooling plate 2021. The connecting pipe 20 has a first pipe section 21 and a second pipe section 22 that are connected to each other, and the first pipe section 21 and the second pipe section 22 are arranged obliquely at a first preset angle α. Among them, the connecting pipe 20 includes a sealed pipe 24 and an outer pipe 25 sleeved outside the sealed pipe 24; the connection joint 10 is inserted into the sealed pipe 24 and is connected to the sealed pipe 24.

[0075] The connecting joint 10 is used to connect the liquid cooling plate 2021. It can adopt external thread end - type water pipe joints, ferrule - type water pipe joints, self - fixing water pipe joints, etc., and can be flexibly selected according to actual usage needs. The connecting joint 10 in this embodiment can be directly communicated with the liquid cooling plate 2021.

[0076] Exemplarily, the number of connecting joints 10 can be the same as the number of pipe segments of the connecting pipe 20, and one connecting joint 10 is correspondingly inserted into one pipe segment. For example, as Figure 6 shown, when the connecting pipe 20 includes two pipe segments, i.e., the first pipe segment 21 and the second pipe segment 22, the number of connecting joints 10 is two; both ends of the connecting pipe 20 can be respectively connected to the two connecting joints 10. Of course, in other examples, the connecting pipe 20 can also be a pipe fitting whose one end is communicated with the liquid cooling plate 2021 through the connecting joint 10 and the other end is directly communicated with another liquid cooling plate 2021.

[0077] The connecting pipe 20 can be a single pipe body or a combined structure composed of multiple pipe fittings. When the connecting pipe 20 is an integrally formed structure, the first pipe segment 21 and the second pipe segment 22 are respectively part of the connecting pipe 20. When the connecting pipe 20 is a combined structure composed of multiple pipe fittings, the first pipe segment 21 and the second pipe segment 22 can be respectively one of the pipe fittings or two parts in the same pipe fitting.

[0078] The first pipe segment 21 and the second pipe segment 22 are arranged at a first preset angle α, that is, the extending directions of the first pipe segment 21 and the second pipe segment 22 are arranged at the first preset angle α, and their extending directions intersect.

[0079] Among them, one end port of the first pipe segment 21 far from the second pipe segment 22 is configured to be connected to the connecting joint 10 or the liquid cooling plate 2021; one end port of the second pipe segment 22 far from the first pipe segment 21 is configured to be connected to the connecting joint 10 or the liquid cooling plate 2021. In this application, the port of one end of the first pipe segment 21 and the second pipe segment 22 configured to be connected to the connecting joint 10 or the liquid cooling plate 2021 is defined as the connection port.

[0080] The connecting joint 10 is in interference fit with the sealing pipe 24. Among them, the sealing is achieved by the interference fit method, and the sealing method is simple and convenient for assembly. Interference means that the outer diameter of the part of the connecting joint 10 inserted into the sealing pipe 24 is greater than or equal to the inner diameter of the sealing pipe 24, and there is no gap between the connecting joint 10 and the sealing pipe 24 after they are inserted.

[0081] The sealing pipe 24 and the outer pipe 25 can respectively adopt a single pipe body or can be respectively composed of multiple connected pipe bodies. The length dimensions of the sealing pipe 24 and the outer pipe 25 along their respective extending directions can be the same, and their shapes can match each other. The sealing pipe 24 and / or the outer pipe 25 can be pipes with equal diameters.

[0082] Among them, the sealing tube 24 is elastic. The sealing tube 24 being elastic means that after the sealing tube 24 deforms, it can return to its original size and shape, or can basically return to its original size and shape. Basically returning to its original size and shape means that after deformation, although the sealing tube 24 has minor changes in size and shape, it does not affect normal use.

[0083] Exemplarily, the sealing tube 24 can be a sealing elastomer. For example, the sealing tube 24 can be a soft rubber tube, a plastic tube or a rubber tube. Among them, when the sealing tube 24 is made of a sealing elastomer, after the connecting joint 10 is inserted into the sealing tube 24, the sealing tube 24 can deform, facilitating an interference fit with the connecting joint 10 to achieve a sealed connection between the two.

[0084] The outer tube 25 can be a rigid tube; a rigid tube is a tube body that is not easily deformed under an external force. Exemplarily, the outer tube 25 can be a metal tube, a plastic tube, an alloy tube or a nylon tube; these outer tubes 25 have good tensile properties, and the elongation at break is generally greater than 10%. Among them, when the outer tube 25 is a rigid tube, when an external force acts on the outer wall of the connecting tube 20, it is not easy to deform the shape of the sealing tube 24, so that the shape of the inner wall of the connecting tube 20 is not easy to deform, and further, the flow rate, flow rate, etc. of the liquid in the connecting tube 20 are not easy to change, thereby reducing the pressure drop when the liquid passes through the pipeline connection assembly 300 to a certain extent.

[0085] Among them, the sealing tube 24 is a single-piece; and / or the outer tube 25 is a single-piece. That is to say, either the sealing tube 24 or the outer tube 25 is a single-piece, or both are single-pieces. When the sealing tube 24 is a single-piece, the structure of the sealing tube 24 is stable and it is convenient for preparation. When the outer tube 25 is a single-piece, the structure of the outer tube 25 is stable and it is convenient for preparation. A single-piece refers to a piece body in which all parts are connected into a whole through one or more processes.

[0086] In this embodiment, by making the first pipe section 21 and the second pipe section 22 tilted at the first preset angle α, the position requirements of different connection interfaces of the liquid cooling plate 2021 can be met; and compared with the solution in which the first pipe section 21 and the second pipe section 22 are distributed in a straight line, the axial dimension of the connecting pipe 20 can be reduced, which is convenient for the pipe connection assembly 300 to be used in a smaller space. In addition, the pipe connection assembly 300 is set by sleeve-arranging the sealing pipe 24 used to achieve the sealing effect between the connecting joint 10 and the outer tube 25 together with the outer tube 25. Compared with the solution of adding an adapter to achieve the connection and sealing between the connecting joint 10 and the outer tube 25, the adapter can be omitted, the product structure is simplified, and the axial dimension of the connecting pipe 20 can be further reduced. Moreover, by inserting the connecting joint 10 into the sealing tube 24, the connecting joint 10 can be sealed with the sealing tube 24 of the connecting tube 20 by interference fit, and the sealing reliability is better; and the connecting tube 20 has the function of floating and deforming, which facilitates the connection and sealing between the connecting joint 10 and the connecting tube 20.

[0087] In one embodiment, see Figure 8 , Figure 8 A schematic diagram of the overall structure of the pipeline connection assembly provided for the second embodiment of the present application; the connecting pipe 20 also includes a reinforcing structure 26, which is arranged on the side of the outer tube 25 away from the sealing tube 24, and the reinforcing structure 26 is located on the outer side n of the connection between the first pipe section 21 and the second pipe section 22.

[0088] The material of the reinforcing structure 26 can be the same as that of the outer tube 25. Part of the reinforcing structure 26 extends to the first tube section 21, and part of the reinforcing structure 26 extends to the second tube section 22 to increase the rigidity of the connection between the first tube section 21 and the second tube section 22.

[0089] by Figure 8 For example, the connection between the first pipe segment 21 and the second pipe segment 22 is the corner of the connecting pipe 20. The side of the first pipe segment 21 and the second pipe segment 22 that are bent toward each other is the inner side m of the connection between the first pipe segment 21 and the second pipe segment 22; the side of the first pipe segment 21 and the second pipe segment 22 that are away from the bending is the outer side n of the connection between the first pipe segment 21 and the second pipe segment 22.

[0090] In this embodiment, by setting a reinforcement structure 26 on the outer side n of the connection between the first pipe segment 21 and the second pipe segment 22, the stiffness of the connecting pipe 20 can be increased through the reinforcement structure 26, the pressure resistance of the connecting pipe 20 can be increased, and the risk of deformation of the connection between the first pipe segment 21 and the second pipe segment 22 due to excessive internal pressure can be reduced.

[0091] In one embodiment, please refer to Figure 8, the reinforcing structure 26 includes at least one reinforcing rib 261. At least one reinforcing rib 261 is arranged at intervals along the circumferential direction of the connecting pipe 20, and a part of the reinforcing rib 261 extends to the first pipe section 21, and a part of the reinforcing rib 261 extends to the second pipe section 22.

[0092] The reinforcing rib 261 is strip-shaped, and each reinforcing rib 261 extends along the extending direction of the first pipe section 21 and the second pipe section 22. In one example, the number of the reinforcing ribs 261 can be one, and one reinforcing rib 261 is correspondingly arranged outside the connection of the first pipe section 21 and the second pipe section 22. In another example, the number of the reinforcing ribs 261 is multiple, and multiple reinforcing ribs 261 are arranged at intervals. Among them, the number of the reinforcing ribs 261 can be specifically designed according to actual requirements.

[0093] In this embodiment, by making the reinforcing structure 26 include at least one reinforcing rib 261, the risk of deformation at the connection of the first pipe section 21 and the second pipe section 22 due to excessive internal pressure can be reduced through at least one reinforcing rib 261. And compared with the solution that the reinforcing structure 26 is a continuous plate-like structure, at least one reinforcing rib 261 arranged at intervals has a smaller influence on the bending stress of the connecting pipe 20, and the risk of cracks or fractures at the bending part of the connecting pipe 20 can be reduced.

[0094] In one embodiment, see Figure 9 and Figure 10 , Figure 9 is the overall structure schematic diagram of the pipeline connection assembly provided by the third embodiment of the present application; Figure 10 is the overall structure schematic diagram of the pipeline connection assembly provided by the fourth embodiment of the present application. The connecting pipe 20 further has at least one third pipe section 23. At least one third pipe section 23 is connected to the first pipe section 21 at intervals and is communicated with the first pipe section 21. Among them, at least one of all the third pipe sections 23 is coaxially arranged with the first pipe section 21, and the extending direction of the third pipe section 23 coaxially arranged with the first pipe section 21 is opposite to the extending direction of the first pipe section 21; and / or the third pipe section 23 is connected to the same side of the first pipe section 21 as the second pipe section 22, and the third pipe section 23 is arranged obliquely at a second preset angle β with respect to the first pipe section 21.

[0095] In this embodiment, the number of the connection joints 10 can also be the same as the number of the pipe sections. For example, as Figure 10 shown, the connecting pipe 20 includes a first pipe section 21, a second pipe section 22 and a third pipe section 23; the number of the connection joints 10 is three, and the three connection joints 10 are respectively communicated with the first pipe section 21, the second pipe section 22 and the third pipe section 23.

[0096] Among them, for the same first pipe section 21 and second pipe section 22, one end port of the third pipe section 23 far from the first pipe section 21 is configured to be connected to the connection joint 10 or the liquid cooling plate 2021. In this application, the port at one end of the third pipe section 23 configured to be connected to the connection joint 10 or the liquid cooling plate 2021 is also defined as the connection port.

[0097] Among them, as Figure 9 or Figure 10 shown, the number of the third pipe sections 23 can be one. One third pipe section 23 is connected to the first pipe section 21 and is in communication with the first pipe section 21.

[0098] As an example, as Figure 9 shown, the third pipe section 23 can be coaxially arranged with the first pipe section 21, and the extending direction of the third pipe section 23 is opposite to the extending direction of the first pipe section 21, that is, the first pipe section 21 and the third pipe section 23 extend in opposite directions relative to the second pipe section 22 respectively. In this way, the third pipe section 23 and the first pipe section 21 can be respectively connected to a connection joint 10 to be connected to different connection interfaces on two opposite liquid cooling plates 2021.

[0099] In this example, the first pipe section 21 and the third pipe section 23 can be different parts of the same pipe body; the pipe body is provided with a communication hole, and the second pipe section 22 is connected to the pipe body through the communication hole and is in communication with the first pipe section 21 and the second pipe section 22 respectively. Of course, the first pipe section 21 and the third pipe section 23 can also be two different pipe fittings, and these two pipe fittings are connected together with the second pipe section 22 and are in communication with each other in pairs.

[0100] In this example, a strengthening structure 26 may not be provided at the connection between the first pipe section 21 and the second pipe section 22.

[0101] As another example, as Figure 10 shown, different from the pipeline connection assembly 300 provided by the corresponding embodiment above Figures 3 to 8 is that: the third pipe section 23 and the second pipe section 22 are connected to the same side of the first pipe section 21, and the third pipe section 23 is inclined at a second preset angle β with respect to the first pipe section 21. Among them, the third pipe section 23 and the second pipe section 22 are arranged at intervals. The extending direction of the third pipe section 23 can be parallel or intersect with the extending direction of the second pipe section 22.

[0102] In this example, relative Figure 3For the pipeline connection assembly 300 shown, the axial length of the first pipe section 21 can be appropriately increased to connect the third pipe section 23 and space the third pipe section 23 and the second pipe section 22 along the axial direction of the first pipe section 21. In a specific embodiment, another communication hole can be opened on the first pipe section 21, and the third pipe section 23 is connected to the first pipe section 21 through this communication hole and communicates with the first pipe section 21. Among them, the length of the first pipe section 21 along its extending direction can be set according to the actual situation as long as it can communicate with the third pipe section 23.

[0103] As yet another example, refer to Figure 11 , Figure 11 which is the overall structural schematic diagram of the pipeline connection assembly provided by the fifth embodiment of the present application; the number of the third pipe sections 23 is multiple, and the multiple third pipe sections 23 are respectively connected to the first pipe section 21 and respectively communicate with the first pipe section 21. Among them, the structures, materials, functions, etc. of the respective third pipe sections 23 are the same or similar.

[0104] In this example, as shown in Figure 11 , one of the multiple third pipe sections 23 can be coaxially arranged with the first pipe section 21, and the extending direction of the third pipe section 23 is opposite to the extending direction of the first pipe section 21; the specific setting method is similar to the corresponding embodiment in Figure 9 . The other third pipe sections 23 among the multiple third pipe sections 23 are spaced from the second pipe section 22, are connected to the same side of the first pipe section 21, and each third pipe section 23 is inclined to the first pipe section 21 at a second preset angle β.

[0105] Or, as shown in Figure 12 , Figure 12 which is the overall structural schematic diagram of the pipeline connection assembly provided by the sixth embodiment of the present application; it can also be that the multiple third pipe sections 23 are spaced and are spaced and connected to the same side of the first pipe section 21 with the second pipe section 22, and the third pipe section 23 is inclined to the first pipe section 21 at a second preset angle β.

[0106] Among them, the extending direction of each third pipe section 23 can be parallel to the extending direction of the second pipe section 22 respectively. Or, the extending directions of some of the multiple third pipe sections 23 are parallel to the extending direction of the second pipe section 22, and the extending directions of some of the third pipe sections 23 intersect the extending direction of the second pipe section 22. The extending direction of the third pipe section 23 intersecting the extending direction of the second pipe section 22 can include: the third pipe section 23 inclining towards the side where the second pipe section 22 is located and / or the third pipe section 23 inclining away from the second pipe section 22.

[0107] Among them, the length of the first pipe section 21 along its extending direction can be set according to the actual situation as long as it can communicate with the multiple third pipe sections 23 respectively.

[0108] In this embodiment, by making the connecting pipe 20 further include at least one third pipe section 23, at least a three-way form of the connecting pipe 20 can be realized. After the connecting pipe 20 is connected to the corresponding connecting joint 10, at least a three-way form of the pipeline connecting assembly 300 can be realized, so as to meet the connection with different numbers of connection interfaces of the liquid cooling plate 2021; the pipeline connecting assembly 300 can be directly connected to the connection interface of the liquid cooling plate 2021, simplifying the product structure. In addition, by making at least one third pipe section 23 coaxially arranged with the first pipe section 21, and the extending direction of the third pipe section 23 is opposite to that of the first pipe section 21; and / or the third pipe section 23 is connected to the second pipe section 22 on the same side of the first pipe section 21, and the third pipe section 23 is inclined at a second preset angle β with respect to the first pipe section 21, multiple passages of the connecting pipe 20 can be distributed at different angles, so as to meet the connection with connection interfaces at different angles of the liquid cooling plate 2021, and thus it can be used in a case with a small space size.

[0109] In one embodiment, in combination with Figure 3 and Figure 8 , the first preset angle α is greater than or equal to 90° and less than 180°. As an example, as Figure 3 shown, the first preset angle α can be 90 degrees. As another example, as Figure 8 shown, the first preset angle α is greater than 90 degrees and less than 180°; for example, the first preset angle α can be 100°, 110°, 120°, 130°, 140°, 150°, 160°, etc.

[0110] In one embodiment, the second preset angle β is greater than 0° and less than 180°. As an example, as Figure 10 shown, the second preset angle β can be 90 degrees.

[0111] As another example, referring to Figure 13 , Figure 13 which is a structural schematic diagram of a pipeline connecting assembly provided in an embodiment of the present application; the second preset angle β can be an acute angle or an obtuse angle; for example, the second preset angle β can be 60°, 80°, 100°, 120°, 140° or 160°, etc.

[0112] Wherein, when the number of the third pipe sections 23 is multiple, the second preset angles β corresponding to the respective third pipe sections 23 can be the same or different. For example, the second preset angle β corresponding to some of the third pipe sections 23 is a right angle, the second preset angle β corresponding to some of the third pipe sections 23 is an obtuse angle; the second preset angle β corresponding to some of the third pipe sections 23 is an acute angle.

[0113] In this embodiment, by making the first preset angle α and / or the second preset angle β greater than or equal to 90° and less than 180°, the bending stress of the connecting pipe 20 can be reduced; and it is convenient for the integral injection molding of the connecting pipe 20.

[0114] In one embodiment, in combination with Figure 12 , at least one of the first pipe section 21, the second pipe section 22, and at least one third pipe section 23 further includes a limiting rib 27, and the limiting rib 27 protrudes from the outer wall surface of the side wall of the corresponding pipe section and extends along the circumferential direction of the corresponding pipe section.

[0115] Among them, the limiting rib 27 can be an annular protrusion structure on the outer surface of the side wall of the corresponding pipe section; specifically, the limiting rib 27 can be a convex ring.

[0116] The limiting rib 27 can be arranged at one end of the corresponding pipe section away from the connection port where the pipe section is located. For example, the limiting rib 27 on the first pipe section 21 is located at one end of the first pipe section 21 away from the connection port of the first pipe section 21. The limiting rib 27 on the second pipe section 22 is located at one end of the second pipe section 22 away from the connection port of the second pipe section 22.

[0117] As an example, each of the first pipe section 21, the second pipe section 22, and all the third pipe sections 23 is provided with a limiting rib 27.

[0118] In this embodiment, by correspondingly arranging the limiting ribs 27 outside each pipe section, when using an external tooling to assemble each pipe section with the corresponding connection joint 10, the external tooling can be positioned and supported by the limiting rib 27, so as to facilitate the assembly of the corresponding pipe section and the connection joint 10.

[0119] In one embodiment, referring back to Figure 6 , at least one of the first pipe section 21, the second pipe section 22, and all the third pipe sections 23 has a guiding portion 28; the connection joint 10 has an insertion end 13, and the insertion end 13 passes through the guiding portion 28 and is inserted into the corresponding pipe section; among them, the caliber of the guiding portion 28 gradually decreases along the direction X away from the connection joint 10, and the maximum caliber of the guiding portion 28 is greater than the outer diameter of the insertion end 13 of the corresponding connection joint 10.

[0120] Among them, the guiding portion 28 is configured to be connected to the corresponding connection joint 10. The guiding portion 28 can be in the shape of a flared circular ring. The caliber of the guiding portion 28 refers to the diameter of the circular ring structure surrounded by the inner wall surface of the guiding portion 28. The maximum caliber of the guiding portion 28 refers to the caliber of the port of the guiding portion 28.

[0121] The insertion end 13 of the connection joint 10 can be cylindrical. The outer diameter of the insertion end 13 refers to the diameter of the cylindrical structure or conical structure surrounded by the outer wall surface of the side wall of the insertion end 13.

[0122] As an example, each of the first pipe section 21, the second pipe section 22, and each of the third pipe sections 23 has a guiding portion 28 respectively.

[0123] In this embodiment, by making the maximum diameter of the guiding portion 28 larger than the outer diameter of the insertion end 13 of the corresponding connecting joint 10, when assembling the connecting joint 10 and the corresponding pipe section, it is convenient to absorb the assembly tolerance between the two, facilitating the insertion of the connecting joint 10 into the corresponding pipe section. Moreover, even if there is an assembly tolerance within a certain range between the connecting joint 10 and the corresponding pipe section, it can ensure that the connecting joint 10 is smoothly inserted into the corresponding pipe section.

[0124] In one embodiment, the first pipe section 21, the second pipe section 22, and at least one third pipe section 23 are integrally injection molded; and / or the sealing pipe 24 and the outer pipe 25 are integrally injection molded.

[0125] Exemplarily, when the connecting pipe 20 is composed of the first pipe section 21 and the second pipe section 22, the first pipe section 21 and the second pipe section 22 can be integrally injection molded. In this way, the connection strength between the first pipe section 21 and the second pipe section 22 can be increased, and the sealing performance at the connection between the first pipe section 21 and the second pipe section 22 can be improved. When the connecting pipe 20 is composed of the first pipe section 21, the second pipe section 22, and the third pipe section 23, the first pipe section 21, the second pipe section 22, and the third pipe section 23 are integrally injection molded. In this way, the connection strength between the first pipe section 21, the second pipe section 22, and the third pipe section 23 can be increased, and the sealing performance at the connection of each pipe section can be improved.

[0126] Exemplarily, the sealing pipe 24 and the outer pipe 25 are integrally injection molded, that is, the sealing pipe 24 and the outer pipe 25 are injection molded together. In this way, the adhesion between the outer pipe 25 and the sealing pipe 24 can be better, and it is not easy to separate from the sealing pipe 24 during actual use, thereby reducing the failure risk of the connecting pipe 20. It should be noted that the part of the sealing pipe 24 corresponding to each pipe section and the part of the corresponding outer pipe 25 are both integrally injection molded.

[0127] Exemplarily, the first pipe section 21, the second pipe section 22, and at least one third pipe section 23 are integrally injection molded; and the sealing pipe 24 and the outer pipe 25 are integrally injection molded.

[0128] In one embodiment, reference can be made to Figure 5 and Figure 6 , the connecting joint 10 includes a limiting platform 11, a connecting portion 12, and an insertion end 13 that are sequentially connected and communicate with each other; the limiting platform 11 is configured to be connected to the liquid cooling plate 2021; the outer diameter of the connecting portion 12 is larger than the inner diameter of the sealing pipe 24 and smaller than the outer diameter of the end of the insertion end 13 close to the connecting portion 12, and a sealing boss 14 is defined with the insertion end 13.

[0129] The limiting platform 11 can be plate-shaped; for example, a circular plate. The connecting portion 12 is configured to be inserted into the sealing tube 24; the shape of the connecting portion 12 matches that of the sealing tube 24; the connecting portion 12 can be cylindrical. The outer diameter of the insertion end 13 gradually decreases in the direction away from the connecting portion 12. Among them, the maximum outer diameter of the insertion end 13 is greater than the outer diameter of the connecting portion 12 to cooperate with the connecting portion 12 to form a circular sealing boss 14. It can be understood that the outer diameter of the sealing boss 14 is greater than the inner diameter of the sealing tube 24 to have an interference fit with the sealing tube 24. The insertion end 13 can be a conical structure.

[0130] In this embodiment, by making the connection joint 10 form a sealing boss 14 and making the outer diameter of the sealing boss 14 greater than the inner diameter of the sealing tube 24, after the connection joint 10 is inserted into the sealing tube 24, the sealing boss 14 and the sealing tube 24 have an interference fit, which can further improve the connection tightness between the connection joint 10 and the connecting tube 20.

[0131] In one embodiment, referring to Figures 3 to 7 , a pipeline connection assembly 300 is provided. The pipeline connection assembly 300 includes a connection joint 10 and a connecting tube 20. The connection joint 10 is used to communicate with the liquid cooling plate 2021. The connecting tube 20 has a first tube section 21 and a second tube section 22 that are interconnected. The first tube section 21 and the second tube section 22 are inclined at a first preset angle α. Among them, the connecting tube 20 includes a sealing tube 24 and an outer tube 25 sleeved outside the sealing tube 24; the connection joint 10 is inserted into the sealing tube 24 and communicates with the sealing tube 24.

[0132] For the specific structure and function of the pipeline connection assembly 300 provided in this embodiment, reference can be made to the relevant descriptions above.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Multiple battery cells; At least one pipe connection assembly and a plurality of liquid cooling plates arranged at intervals, two adjacent liquid cooling plates are connected through at least one pipe connection assembly; wherein the pipe connection assembly comprises: A connecting joint, connected to the liquid cooling plate; A connecting pipe comprises a first pipe section and a second pipe section which are interconnected, wherein the first pipe section and the second pipe section are inclined at a first preset angle; wherein the connecting pipe comprises a sealing pipe and an outer pipe sleeved outside the sealing pipe; and the connecting joint is inserted into the sealing pipe and is connected to the sealing pipe.

2. The battery device according to claim 1, characterized in that: The connecting pipe further comprises a reinforcing structure, which is arranged on a side of the outer pipe away from the sealing pipe and located outside a connection between the first pipe section and the second pipe section.

3. The battery device according to claim 2, characterized in that: The reinforcement structure includes at least one reinforcement rib, which is arranged at intervals along the circumferential direction of the connecting pipe, and part of the reinforcement rib extends to the first pipe section, and part of the reinforcement rib extends to the second pipe section.

4. The battery device according to claim 1, characterized in that: The connecting pipe further comprises at least one third pipe section, and the at least one third pipe section is connected to the first pipe section at intervals and communicates with the first pipe section; Among them, at least one of the third pipe segments is coaxially arranged with the first pipe segment, and the extension direction of the third pipe segment is opposite to the extension direction of the first pipe segment; and / or the third pipe segment and the second pipe segment are connected to the same side of the first pipe segment, and the third pipe segment and the first pipe segment are inclined at a second preset angle.

5. The battery device according to claim 4, characterized in that: The first preset angle and / or the second preset angle is greater than or equal to 90° and less than 180°.

6. The battery device according to claim 4, characterized in that: At least one of the first pipe segment, the second pipe segment and the at least one third pipe segment further includes a limiting rib, which protrudes from the outer wall surface of the side wall of the corresponding pipe segment and extends along the circumferential direction of the corresponding pipe segment.

7. The battery device according to claim 4, characterized in that: At least one of the first pipe segment, the second pipe segment and the at least one third pipe segment has a guide portion; the connecting joint has an insertion end, and the insertion end passes through the guide portion and is inserted into the corresponding pipe segment; wherein the caliber of the guide portion gradually decreases in a direction away from the connecting joint, and the maximum caliber of the guide portion is greater than the outer diameter of the corresponding insertion end of the connecting joint.

8. The battery device according to claim 4, characterized in that The first pipe segment, the second pipe segment and the at least one third pipe segment are integrally injection-molded; and / or The sealing tube and the outer tube are integrally injection-molded.

9. The battery device according to any one of claims 1 to 8, characterized in that: The connecting joint includes a limiting platform, a connecting portion, and an insertion end that are sequentially connected and communicate with each other; the limiting platform is configured to be connected to the liquid cooling plate; the outer diameter of the connecting portion is greater than the inner diameter of the sealing tube and less than the outer diameter of the end of the insertion end close to the connecting portion, and a sealing boss is defined with the insertion end.

10. A pipeline connection component, characterized in that, Comprising: A connecting joint for communicating with the liquid cooling plate; A connecting pipe having a first pipe section and a second pipe section that communicate with each other, the first pipe section and the second pipe section being inclined at a first preset angle; wherein, the connecting pipe includes a sealing tube and an outer tube sleeved outside the sealing tube; the connecting joint is inserted into the sealing tube and communicates with the sealing tube.

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