Heat exchange tube, battery, and electric apparatus

Abstract

A heat exchange tube (10), a battery (1000), and an electric apparatus. The heat exchange tube (10) comprises a plurality of heat exchange sections (101), the plurality of heat exchange sections (101) are separately formed, and the plurality of heat exchange sections (101) are sequentially spliced and communicated; each heat exchange section (101) comprises a bent section (12) and straight sections (11), two straight sections (11) of any two adjacent heat exchange sections (101) are connected by means of a lap joint structure (13), the lap joint structure (13) comprises a first insertion portion (131) and a second insertion portion (132), and the first insertion portion (131) is inserted into the second insertion portion (132) and is connected to the second insertion portion (132).

Description

Heat exchange tubes, batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number "202420285873.0" filed by Contemporary Amperex Technology Co., Ltd. on February 6, 2024. The entire contents of the above Chinese patent application are hereby incorporated into this application by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a heat exchange tube, a battery, and an electrical device. Background Art

[0004] The battery cells within a battery must operate within a certain temperature range. If the temperature exceeds or falls below this range, the battery's stability and performance will be significantly affected. Heat exchange tubes are used to exchange heat with the battery cells, keeping the battery within a suitable temperature range. The bending path of the heat exchange tubes affects the heat exchange area and temperature distribution between the components being heated and the heat exchanged.

[0005] In some related technologies, the extension path of the heat exchange tube is too complicated, which makes molding difficult and causes interference.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a heat exchange tube, a battery, and an electrical device, which can meet the requirements of batteries and electrical devices for larger heat exchange areas and complex heat exchange paths by reducing the difficulty of forming the heat exchange tube.

[0008] In a first aspect, an embodiment of the present application provides a heat exchange tube, comprising a plurality of heat exchange sections, each of which is formed separately and is spliced ​​and connected in sequence; wherein, each heat exchange section comprises a bent section and a straight section, and the two straight sections of any two adjacent heat exchange sections are connected by an overlapping structure, and the overlapping structure comprises a first plug-in portion and a second plug-in portion, and the first plug-in portion is inserted into the second plug-in portion and connected to the second plug-in portion.

[0009] In the above technical solution, multiple heat exchange sections are formed separately and connected in sequence, so that the bending section and straight section of each heat exchange section are not interfered with by other heat exchange sections during the forming process, which reduces the difficulty of forming and is conducive to improving production efficiency. In addition, there is no need to increase the spacing between the multiple heat exchange sections of the heat exchange tube to avoid interference during the forming process. The heat exchange tubes can be arranged more densely within a certain space range to increase the heat exchange area. The extension path of the heat exchange tube from the inlet to the outlet can also be more flexible and changeable, which is conducive to meeting the temperature control requirements of different temperature field distributions. In addition, the splicing of multiple heat exchange sections is achieved through the overlap structure, and the plug-in connection method is more convenient for assembly. The positioning between the multiple heat exchange sections is precise, and there is no need to set up other connecting and matching components, which is conducive to reducing costs.

[0010] In some embodiments, in two straight sections connected by the overlapping structure, an end portion of one straight section is formed as a first plug-in portion, and an end portion of the other straight section is formed as a second plug-in portion.

[0011] In the above technical solution, the two heat exchange sections are directly connected by plugging in the straight section, which can not only reduce the plug-in gap and reduce the risk of leakage, but also reduce the plug-in process and improve the splicing efficiency.

[0012] In some embodiments, the inner circumference of the first plug-in portion is coplanar with the inner circumference of the connected heat exchange section, the second plug-in portion is formed as a flared section, and the inner circumference of the second plug-in portion is larger than the inner circumference of the connected heat exchange section.

[0013] In the above technical solution, the first plug-in portion is inserted into the flared section, allowing the heat exchange section connected to the flared section to limit the insertion depth of the first plug-in portion, preventing the first plug-in portion from being inserted too deep and affecting the extension length of the heat exchange tube. Furthermore, the inner circumference of the first plug-in portion is coplanar with the inner circumference of the connected heat exchange section, making it less likely that the first plug-in portion will increase the flow resistance within the connected heat exchange section. The larger inner circumference of the flared section can reduce the impact of the first plug-in portion on the flow resistance within the connected heat exchange section after insertion, thereby reducing the overall flow resistance of the heat exchange tube.

[0014] In some embodiments, the first plug-in portion is formed as a necked section and the outer circumference of the first plug-in portion is smaller than the outer circumference of the connected heat exchange section, and the outer circumference of the second plug-in portion is coplanar with the outer circumference of the connected heat exchange section.

[0015] In the above technical solution, the tapered section is inserted into the second plug-in portion, allowing the heat exchange section connected to the tapered section to cooperate with the second plug-in portion to achieve a limited insertion position, preventing the first plug-in portion from being inserted too deep and affecting the extension length of the heat exchange tube. Furthermore, the outer circumference of the second plug-in portion is coplanar with the outer circumference of the connected heat exchange section, which helps to improve the flatness of the outer surface of the heat exchange tube, ensuring sufficient contact between the outer surface of the heat exchange tube and the component to be heat exchanged, reducing thermal resistance and improving heat exchange efficiency.

[0016] In some embodiments, the heat exchange tube also includes a connecting joint, the two ends of which are respectively connected to the ends of the two straight sections of the two adjacent heat exchange sections through a lap structure, wherein one of the ends of the connecting joint and the ends of the straight section is formed as a first plug-in portion, and the other is formed as a second plug-in portion.

[0017] In the above technical solution, compared to the heat exchange section, the connecting joint has a shorter extension length, is easier to form, and offers more flexible structural configuration. Therefore, by indirectly connecting the two heat exchange sections through the connecting joint, a sealing structure, such as a solder layer, can be provided on the connecting joint. After the connecting joint and the heat exchange section are plugged together, they can be directly heated and welded to achieve a seal. The heat exchange section does not require a solder layer or other sealing structure, resulting in a simpler structure. For example, a single material can be extruded, eliminating the limitations of composite materials. This reduces the difficulty of forming the heat exchange section and improves production efficiency. Furthermore, extrusion molding provides a more reliable seal for the heat exchange section.

[0018] In some embodiments, in the overlapping structure connecting the straight section and the connecting joint, the first plug-in portion is formed as a necked section and / or the second plug-in portion is formed as a flared section.

[0019] In the above technical solution, by providing at least one of the constricted section and the expanded section, the overlap structure can be limited in insertion, so that the insertion depth is not too large and affects the extension length of the heat exchange tube. The first plug-in portion is formed as a constricted section, which is conducive to a smoother transition between the outer circumference of the straight section and the outer circumference of the connecting joint after the second plug-in portion is inserted, which is conducive to improving the flatness of the outer surface of the heat exchange tube, so that the outer surface of the heat exchange tube can fully contact and exchange heat with the component to be heat exchanged, reducing thermal resistance and improving heat exchange efficiency. The second plug-in portion is formed as a expanded section. After the first plug-in portion is inserted into the expanded section, it is conducive to a smoother transition between the inner circumference of the straight section and the inner circumference of the connecting joint, reducing the impact of the overlap joint on flow resistance, thereby reducing the overall flow resistance of the heat exchange tube.

[0020] In some embodiments, an outer circumference of one of the straight section and the connecting joint is coplanar with an outer circumference of the connected first plug-in portion, and an inner circumference of the other is coplanar with an inner circumference of the connected second plug-in portion.

[0021] In the above technical solution, the ends of the straight section and the connecting joint do not need to be expanded or narrowed. The connecting joint can be directly sleeved outside the straight section or inserted into the straight section to achieve plug-in connection, which is conducive to reducing assembly processes and improving production efficiency.

[0022] In some embodiments, the outer circumference of the first plug-in portion is connected to the inner circumference of the second plug-in portion.

[0023] In the above technical solution, the connection area between the first plug-in portion and the second plug-in portion is relatively large, which is beneficial to improving the connection reliability and the sealing reliability.

[0024] In some embodiments, the first plug-in portion and the second plug-in portion are connected by welding.

[0025] In the above technical solution, the connection method is simple and firm, and has good sealing performance.

[0026] In some embodiments, each heat exchange section is integrally formed from a single tube; and / or, the heat exchange tube is a flat tube.

[0027] In the above technical solution, the assembly process between the straight section and the bent section is omitted, thereby improving production efficiency, and no splicing and sealing is required, which is conducive to reducing the risk of sealing failure.

[0028] In some embodiments, the heat exchange section includes a bent section and two straight sections, and the two straight sections are respectively connected to two ends of the bent section.

[0029] In the above technical solution, the heat exchange section is generally formed into a U-shaped, V-shaped or L-shaped structure, the heat exchange section includes fewer bending sections, and the heat exchange section is less difficult to form. In addition, the heat exchange section can be spliced ​​with other heat exchange sections through the straight sections at both ends, which makes splicing easier and less likely to cause sealing failure at the splicing.

[0030] In some embodiments, the two straight sections of the heat exchange section extend along the first direction and are arranged along the second direction, and the first direction and the second direction are set at an angle. In the two connected heat exchange sections, a straight section of one heat exchange section is opposite to and connected to a straight section of the other heat exchange section along the first direction.

[0031] In the above technical solution, the heat exchange tube is formed as a serpentine tube extending back and forth along the first direction, which has a better effect of increasing the heat exchange area, and multiple heat exchange sections are easy to splice.

[0032] In some embodiments, the lengths of the two straight sections at both ends of the splicing path are greater than the length of the middle straight section. The two straight sections are parallel to each other and respectively have an inlet and an outlet for the heat exchange tube, and the inlet and the outlet are located at the same end in the length direction of the two straight sections.

[0033] In the above technical solution, the length of the straight sections at both ends is greater than that of the middle straight section, so that the straight sections at both ends can be close to the edge of the heat exchange tube in the length direction, which is convenient for connection with the external flow path.

[0034] In some embodiments, the heat exchange tube includes multiple straight sections and at least one bent section connected in sequence, the straight sections extend along a first direction and the multiple straight sections are arranged at intervals along a second direction, the first direction and the second direction are set at an angle, and at least one bent section connects and connects multiple straight sections in sequence.

[0035] In the above technical solution, the heat exchange tube can be reversed in the extension path from the inlet to the outlet by connecting the straight section with the bent section. The heat exchange tube is formed into a serpentine structure, which is conducive to enabling the heat exchange tube to cover a larger area within a certain spatial range, thereby increasing the heat exchange area with the component to be heat exchanged, increasing the heat exchange efficiency and improving the temperature uniformity of the component to be heat exchanged.

[0036] In some embodiments, the bending segment includes an arc segment and an inclined segment, the inclined segment connects the arc segment and one of the two adjacent straight segments, and the inclined segment is inclined along a first direction away from the arc segment and toward the other of the two adjacent straight segments.

[0037] In the above technical solution, the inclined section can reduce the spacing between the two straight sections in the second direction, making the spacing between the two straight sections smaller than the curvature diameter of the inner edge of the arc-shaped section. As a result, the spacing between any two straight sections connected by the curved section is reduced, reducing the space occupied by all straight sections of the heat exchange tube in the second direction. In other words, if the required heat exchange range in the second direction is fixed, more straight sections can be arranged, thereby increasing the heat exchange area within a given spatial range, improving the heat exchange effect, and achieving heat exchange uniformity across different areas of the heat exchange component.

[0038] In some embodiments, the bending segment includes an arc segment and an inclined segment, one end of the inclined segment is connected to one end of the arc segment, and the other end of the inclined segment and the other end of the arc segment are respectively connected to two adjacent straight segments.

[0039] In the above technical solution, the arc segment extends along an arc, and the inclined segment can extend along a straight line. The arc segment and the inclined segment need to change the bending method during the forming process. By including an inclined segment in the bending segment, the number of times the bending method is switched during the bending forming process can be reduced, thereby improving production efficiency and reducing the difficulty of forming.

[0040] In some embodiments, the bending segment includes an arc segment and two inclined segments, and the two inclined segments respectively connect two ends of the arc segment and two adjacent straight segments.

[0041] In the above technical solution, reducing the spacing between the straight segments has a better effect, and when the spacing needs to be reduced to a certain extent, the required inclination angle of each inclined segment is smaller, which is conducive to reducing the difficulty of forming.

[0042] In some embodiments, the bending diameter of the inner edge of the bending section is D, and the width of the straight section along the second direction is L, wherein the spacing between the two straight sections of the same heat exchange section in the second direction is 60%D to 70%D; and / or, the two straight sections of the heat exchange section are a first straight section and a second straight section, and in two adjacent heat exchange sections, the first straight section of one heat exchange section and the second straight section of the other heat exchange section are opposite to each other along the first direction and are connected by an overlapping structure, and the second straight section of one heat exchange section and the first straight section of the other heat exchange section are respectively located on both sides of the overlapping structure in the second direction, and the spacing between the first straight section and the second straight section located on both sides of the overlapping structure is 60%(2D+L) to 70%(2D+L).

[0043] In the above technical solution, it is possible to effectively reduce the space occupied by the two straight sections of the heat exchange section in the second direction, and to reduce the overall space occupied by the connected heat exchange sections in the second direction, thereby achieving a better effect in increasing the heat exchange area. Moreover, the inclination angle of the inclined section is reasonable, which facilitates the separate molding of the heat exchange section.

[0044] In some embodiments, the heat exchange tube includes a first heat exchange tube, the first heat exchange tube includes a first heat exchange channel and a second heat exchange channel, the second heat exchange channel is bent to form a U-shaped area, the first heat exchange channel is bent and arranged in the U-shaped area, and is connected to the second heat exchange channel.

[0045] In the above technical solution, the second heat exchange channel is bent to form a U-shaped area, and the first heat exchange channel is bent and arranged in the U-shaped area. When the heat exchange tube exchanges heat with the battery assembly, the U-shaped area formed by the outer second heat exchange channel can be opposite to the outer battery cells of the battery, and the first heat exchange channel in the U-shaped area can be opposite to the internal battery cells, so that the heat exchange tube can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cells and the environment, so that the heat exchange effect of the battery cells outside the battery assembly and the battery cells inside the battery assembly tend to be consistent, thereby improving the temperature uniformity of the battery, thereby improving the service life of the battery to a certain extent.

[0046] In some embodiments, the first heat exchange channel includes a plurality of first heat exchange parts, which are arranged at intervals and connected in series by bending.

[0047] In the above technical solution, on the one hand, by setting up multiple first heat exchange parts, the heat exchange area of ​​the first heat exchange channel can be increased, and then the heat exchange area of ​​the first heat exchange tube can be increased, thereby improving the heat exchange effect of the first heat exchange tube; on the other hand, since the internal battery cells are wrapped by the external battery cells, the temperature difference between the internal battery cells is not large. Therefore, by setting up multiple first heat exchange parts, the overall heat exchange effect can be improved while reducing the temperature difference between the internal and external battery cells.

[0048] In some embodiments, the second heat exchange channel includes: a second heat exchange part, a third heat exchange part and a fourth heat exchange part, the second heat exchange part extends along the first side circumference of the first heat exchange channel, the third heat exchange part is connected between the second heat exchange part and the first heat exchange channel, and extends along the second side circumference of the first heat exchange channel, the first end of the third heat exchange part is connected to the second heat exchange part at an angle and the second end is connected to the first heat exchange channel at an angle, the fourth heat exchange part is communicated with the second heat exchange part, is connected to the second heat exchange part at an angle, and extends along the third side circumference of the first heat exchange channel.

[0049] In the above technical solution, by arranging the second heat exchange part, the third heat exchange part and the fourth heat exchange part on three sides of the first heat exchange channel respectively, the second heat exchange channel can surround the first heat exchange channel, thereby increasing the compactness of the arrangement of the first heat exchange tube and realizing the miniaturization of the structure of the first heat exchange tube, which is beneficial to improving the volume energy density of the battery. At the same time, it can also simplify the structure of the first heat exchange tube and facilitate the processing and production of the heat exchange tube.

[0050] In some embodiments, the first heat exchange tube further includes a third heat exchange channel, the first heat exchange channel is connected between the third heat exchange channel and the second heat exchange channel, and the third heat exchange channel is connected to the first heat exchange channel at an angle.

[0051] In the above technical solution, by providing the third heat exchange channel, the heat exchange area of ​​the first heat exchange tube can be further increased, thereby further improving the heat exchange effect of the first heat exchange tube.

[0052] In some embodiments, the first heat exchange channel includes multiple first heat exchange parts, and the multiple first heat exchange parts are bent and connected in sequence in the second direction. The third heat exchange channel is arranged on the side of the first heat exchange channel away from the third heat exchange part. The third heat exchange channel is connected to the one of the multiple first heat exchange parts that is closest to the second heat exchange part along the second direction. The third heat exchange channel extends along the second direction toward a direction away from the second heat exchange part, and the first heat exchange part extends along the first direction, and the first direction is set at an angle to the second direction.

[0053] In the above technical solution, by adding a third heat exchange channel and connecting the third heat exchange channel to the one of the multiple first heat exchange parts that is closest to the second heat exchange part along the second direction Y, the heat exchange area can be increased, the temperature difference of the battery assembly can be balanced, and the temperature uniformity of the battery assembly can be improved.

[0054] In a second aspect, an embodiment of the present application further provides a battery comprising the above-mentioned heat exchange tube.

[0055] In some embodiments, the battery includes multiple heat exchange tubes, and the multiple heat exchange tubes are arranged at intervals along the second direction, or arranged around each other. At least one heat exchange tube is a first heat exchange tube, and the first heat exchange tube includes a first heat exchange channel and a second heat exchange channel. The second heat exchange channel is bent to form a U-shaped area. The first heat exchange channel is bent and arranged in the U-shaped area and is connected to the second heat exchange channel. The multiple heat exchange tubes are arranged in parallel.

[0056] In the above technical solution, by providing one or more heat exchange tubes, and arranging the multiple heat exchange tubes at intervals along the second direction Y or arranging them around each other, the diversity of the heat exchange tubes can be increased, thereby improving the adaptability of the heat exchange tubes so that they can meet different battery requirements and thus improve the market competitiveness of the batteries; at the same time, arranging multiple heat exchange tubes in parallel can enable multiple heat exchange tubes to exchange heat simultaneously, thereby reducing the heat exchange time of the heat exchange tubes and improving the heat exchange efficiency.

[0057] In some embodiments, the battery further includes: a box assembly and a battery assembly, the box assembly includes an integrally stamped box body, the box body includes a bottom wall and a surrounding wall, the battery assembly is disposed in the box body, and the battery assembly includes multiple battery cells.

[0058] In the above technical solution, because the bottom wall and surrounding wall of the box body are integrally stamped, there is no need to consider sealing issues at the junction between the bottom wall and the surrounding wall, which can improve the sealing effect. This prevents muddy water from seeping into the box body through the junction and affecting the battery components, thereby improving battery reliability. Furthermore, the integrally stamped box body does not require splicing, which can improve production efficiency.

[0059] In some embodiments, the battery includes a thermostat, which includes at least one of a first thermostat, a second thermostat and a third thermostat, and at least one of the first thermostat, the second thermostat and the third thermostat forms a heat exchange tube, wherein the first thermostat is arranged outside the box body and is in contact with the outer wall of the box body; the second thermostat is arranged in the box assembly and is located between the battery assembly and the box assembly; the third thermostat is arranged in the box assembly and is located between two adjacent battery cells.

[0060] In the above technical solution, the battery cells may generate heat during operation, or need to be heated in a low-temperature environment to keep the battery cells within an appropriate temperature range. By providing a thermostat, the temperature of the battery cells can be regulated, thereby improving the stability of the battery cells and increasing the battery life.

[0061] In a third aspect, an embodiment of the present application further provides an electrical device including the above-mentioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG1 is a schematic diagram of a vehicle provided in an embodiment of the present application;

[0063] FIG2 is an exploded view of a battery provided in some embodiments of the present application;

[0064] 3 and 4 are schematic structural diagrams of heat exchange tubes provided in some embodiments of the present application;

[0065] FIG5 is a schematic diagram of the structure of heat exchange tubes provided in other embodiments of the present application;

[0066] FIG6 is a partial schematic diagram of the overlapping structure provided in an embodiment of the present application;

[0067] FIG7 is a cross-sectional view of the overlap structure provided in the first embodiment of the present application along the direction indicated by line AA in FIG4 ;

[0068] FIG8 is a cross-sectional view of the overlap structure provided in the second embodiment of the present application;

[0069] FIG9 is a cross-sectional view of the overlap structure provided in the third embodiment of the present application;

[0070] FIG10 is a cross-sectional view of the overlapping structure provided in the fourth embodiment of the present application;

[0071] FIG11 is a cross-sectional view of a joint structure provided in a fifth embodiment of the present application;

[0072] FIG12 is a cross-sectional view of the overlapping structure provided in the sixth embodiment of the present application;

[0073] FIG13 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0074] FIG14 is a schematic diagram of a partial structure of batteries provided in other embodiments of the present application;

[0075] FIG15 is a schematic diagram of a partial structure of a battery provided in some other embodiments of the present application;

[0076] FIG16 is a partial cross-sectional view of a battery provided in some embodiments of the present application;

[0077] FIG17 is an exploded view of a portion of a battery provided by some embodiments of the present application;

[0078] FIG18 is an assembly diagram of partial components of a battery provided in some embodiments of the present application.

[0079] Reference numerals:

[0080] Vehicle 1; Battery 1000; Controller 2000; Motor 3000;

[0081] Battery assembly 200; battery cell 210; box assembly 300; box body 310; bottom wall 311; surrounding wall 312; box cover 320; expansion beam 330; bottom guard plate 340;

[0082] Heat exchange element 100; first temperature adjustment element 110; second temperature adjustment element 120; third temperature adjustment element 130;

[0083] Heat exchange tube 10; heat exchange section 101; first heat exchange tube 102; second heat exchange tube 103; straight section 11; bent section 12; arc section 121; inclined section 122; overlap structure 13; first plug-in portion 131; second plug-in portion 132;

[0084] Connecting connector 20;

[0085] Connector 40;

[0086] U-shaped region 50; first heat exchange channel 51; first heat exchange portion 511; second heat exchange channel 52; second heat exchange portion 521; third heat exchange portion 522; fourth heat exchange portion 523; third heat exchange channel 53;

[0087] First direction X; second direction Y; third direction Z. DETAILED DESCRIPTION

[0088] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0089] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only 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-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0090] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0091] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0092] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. 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 application generally indicates that the related objects are in an "or" relationship.

[0093] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0094] The term "plurality" used in this application refers to two or more (including two).

[0095] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0096] It is understood that the temperature environment within the battery is affected by external weather conditions. The battery cells within the battery need to be within a certain temperature range during operation. When the temperature within the battery exceeds or falls below this range, the stability and performance of the battery will be significantly affected. For example, in hot weather, the battery cells need to be cooled and dissipated to keep the temperature within the required range. In cold weather, the battery cells need to be heated to keep the temperature within the required range.

[0097] Heat exchange tubes can be used to circulate heat exchange medium and perform heat exchange with components to be exchanged, such as batteries, so that the heat or cold of the heat exchange medium is transferred to the components to be exchanged, realizing heat exchange with the components to be exchanged, thereby heating or cooling the components to be exchanged, achieving temperature regulation, and allowing the components to be exchanged to be in a more suitable temperature range.

[0098] The bending path of a heat exchange tube affects the heat exchange area and temperature distribution between it and the component being heat exchanged. In some related technologies, to increase the heat exchange area and adapt to the temperature distribution requirements of thermal management, the extension path of the heat exchange tube is complex, for example, including bending areas with the smallest possible bending radius to increase the coverage area of ​​the heat exchange tube within a certain spatial range and adjust the temperature distribution. However, this makes the heat exchange tube forming process more difficult, and different areas are prone to interference during the bending process.

[0099] Based on this, the present application proposes a heat exchange tube comprising: a plurality of heat exchange segments, each of which is individually formed and sequentially spliced ​​and connected. Each heat exchange segment comprises a bent segment and a straight segment, and the two straight segments of any two adjacent heat exchange segments are connected by an overlap structure. The overlap structure comprises a first plug-in portion and a second plug-in portion, wherein the first plug-in portion is inserted into and connected to the second plug-in portion.

[0100] In the heat exchange tube of the above-mentioned structure, multiple heat exchange sections are separately formed and sequentially spliced ​​and connected, so that the bent section and the straight section of each heat exchange section are not interfered with by other heat exchange sections during the forming process, which reduces the forming difficulty and is conducive to improving production efficiency; moreover, there is no need to increase the spacing between the multiple heat exchange sections of the heat exchange tube to avoid interference in the forming process. The heat exchange tubes can be arranged more densely within a certain spatial range to increase the heat exchange area. The extension path of the heat exchange tube from the inlet to the outlet can also be more flexible and changeable, which is conducive to meeting the temperature control requirements of different temperature field distributions.

[0101] The heat exchange tube disclosed in the embodiments of the present application can be used in electrical devices that use batteries as power sources or various energy storage systems that use batteries as energy storage elements. The electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, and the like. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0102] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device according to an embodiment of the present application.

[0103] Referring to Figure 1, Figure 1 is a schematic diagram of a vehicle 1 provided in some embodiments 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, etc. A battery 1000 is provided inside the vehicle 1. The battery 1000 can be provided at the bottom, head or tail of the vehicle 1. The battery 1000 can be used to power the vehicle 1. For example, the battery 1000 can serve as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 2000 and a motor 3000. The controller 2000 is used to control the battery 1000 to power the motor 3000, for example, for starting, navigating and operating power requirements of the vehicle 1 during driving.

[0104] In some embodiments of the present application, the battery 1000 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0105] Referring to Figure 2, Figure 2 is an exploded view of the battery 1000 of some embodiments of the present application. The battery 1000 includes a box assembly 300, a battery cell 210 and a heat exchange component 100. The box assembly 300 has a accommodating cavity, and the battery cell 210 is accommodated in the accommodating cavity of the box assembly 300. The heat exchange component 100 can be arranged between the battery cell 210 and the box assembly 300, or between adjacent battery cells 210.

[0106] The housing assembly 300 is used to provide storage space for the battery cells 210. The housing assembly 300 can have various structures. In some embodiments, the housing assembly 300 can include a first portion (e.g., the housing body 310 described below) and a second portion (e.g., the housing cover 320 described below). The first and second portions overlap, and together they define a storage space for the battery cells 210. The second portion can be a hollow structure with one end open, and the first portion can be a plate-like structure. The first portion overlaps the open side of the second portion, so that the first and second portions together define the storage space. Alternatively, both the first and second portions can be hollow structures with one end open, with the open side of the first portion overlapping the open side of the second portion. Of course, the housing assembly 300 formed by the first and second portions can have various shapes, such as a cylinder, a rectangular parallelepiped, etc. Optionally, in some embodiments, the housing assembly 300 also includes a bottom guard plate 340, which is located on the underside of the housing body 310 to further enhance the bearing strength and impact resistance of the bottom of the housing body 310. The bottom guard plate 340 may be made of various materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0107] In the battery 1000, there may be multiple battery cells 210, and the multiple battery cells 210 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 210. The multiple battery cells 210 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 210 may be housed within the housing assembly 300. Of course, the battery 1000 may also be a battery module formed by first connecting multiple battery cells 210 in series, in parallel, or in a hybrid connection, and then the multiple battery modules are further connected in series, in parallel, or in a hybrid connection to form an entire battery cell, which is then housed within the housing assembly 300. The battery 1000 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 210.

[0108] Each battery cell 210 may be a secondary battery or a primary battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 210 may be cylindrical, flat, rectangular, or in other shapes.

[0109] In the battery 1000, the heat exchange element 100 can be disposed between the multiple battery cells 210 and the top wall of the box assembly 300, between the multiple battery cells 210 and the bottom wall of the box assembly 300, between the bottom wall of the box assembly 300 and the bottom guard plate 340, or between two adjacent battery cells 210, providing heat exchange for the multiple battery cells 210. In some embodiments, the heat exchange element 100 can include a heat exchange tube 10 and a current collector. The heat exchange tube 10 is connected to the current collector and can be a flat tube, a round tube, a harmonica tube, or other shaped tube. The current collector can be a rectangular tube, a round tube, or the like.

[0110] Hereinafter, a heat exchange tube 10 according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0111] 3 to 5 , FIG3 and FIG4 are schematic diagrams of the structure of the heat exchange tube 10 provided in some embodiments of the present application; FIG5 is a schematic diagram of the structure of the heat exchange tube 10 provided in other embodiments of the present application. The heat exchange tube 10 includes: a plurality of heat exchange sections 101.

[0112] Specifically, multiple heat exchange sections 101 are formed separately, and multiple heat exchange sections 101 are spliced ​​and connected in sequence. Each heat exchange section 101 includes a bent section 12 and a straight section 11, and the two straight sections 11 of any two adjacent heat exchange sections 101 are connected by a lap joint structure 13. Please refer to Figures 6 to 12. Figure 6 is a partial schematic diagram of the lap joint structure 13 provided in an embodiment of the present application, and Figures 7 to 12 are cross-sectional views of the lap joint structure 13 provided in different embodiments of the present application along the direction indicated by line AA in Figure 6. The lap joint structure 13 includes a first plug-in portion 131 and a second plug-in portion 132. The first plug-in portion 131 is inserted into the second plug-in portion 132 and connected to the second plug-in portion 132.

[0113] The heat exchange tube 10 is a tubular structure capable of allowing the medium to flow and defining a flow path for the medium, such as a circular tube, a rectangular tube, an elliptical tube, etc. The heat exchange tube 10 can be made of a material with excellent thermal conductivity, such as a metal material, specifically aluminum, copper, etc. For example, the heat exchange tube 10 can be an aluminum tube.

[0114] The multiple heat exchange segments 101 are formed separately and the multiple heat exchange segments 101 are spliced ​​and connected in sequence, which means that during the production process, the multiple heat exchange segments 101 are processed and formed separately and then connected together. Each heat exchange segment 101 is formed by extrusion, or can be formed by bending a sheet metal and fixed by welding, etc. The forming methods of the multiple heat exchange segments 101 can be the same or different; the structures of the multiple heat exchange segments 101 can be the same or different. For example, if at least two heat exchange segments 101 have the same structure, the heat exchange segments 101 can be formed into standard parts or universal parts. By adjusting the number of heat exchange segments 101, the required extension length and extension path of the heat exchange tube 10 can be adjusted, which is conducive to reducing the difficulty of forming the heat exchange segment 101; for example, the structures of the multiple heat exchange segments 101 are different, so that the structure of each heat exchange segment 101 can be flexibly adjusted according to the position on the extension path of the heat exchange tube 10 to meet more complex extension path requirements of the heat exchange tube 10.

[0115] Connected heat exchange segments 101 can be connected directly or indirectly via the overlapping structure 13. The first plug-in portion 131 of the overlapping structure 13 is inserted into the second plug-in portion 132. The second plug-in portion 132 defines a plug-in space to accommodate the first plug-in portion 131. This plug-in connection method facilitates assembly and allows for precise positioning between multiple heat exchange segments 101, eliminating the need for additional connecting or mating components and reducing costs.

[0116] Of course, in some embodiments, in addition to the plug-in connection, the first plug-in portion 131 and the second plug-in portion 132 can also be connected by other means such as welding, interference fit, and bonding to further improve the connection reliability and the connection sealing at the overlap structure 13.

[0117] The straight section 11 is a section of pipe extending along a straight line, while the bent section 12 is a section of pipe extending along a broken line or curve. The provision of the bent section 12 allows the heat exchange tube 10 to reverse its path from the inlet to the outlet, allowing the heat exchange tube 10, while being relatively narrow, to cover a larger area within a given space. This increases the heat exchange area with the heat exchange tube 10, improves heat exchange efficiency, and enhances temperature uniformity across the components being heat exchanged.

[0118] The number of bent sections 12 and straight sections 11 included in each heat exchange section 101 can be flexibly set based on the difficulty of forming different areas. Furthermore, the number of bent sections 12 included in multiple heat exchange sections 101 can be the same or different, and the number of straight sections 11 included can be the same or different. For example, each heat exchange section 101 can include one bent section 12 and one straight section 11; as another example, as shown in Figures 3 and 4 , each heat exchange section 101 can include one bent section 12 and two straight sections 11; as another example, as shown in Figure 5 , some heat exchange sections 101 include one bent section 12 and two straight sections 11, while others include three bent sections 12 and four straight sections 11.

[0119] By forming a plurality of heat exchange segments 101 individually and then splicing them together to form the heat exchange tube 10, operations such as bending during the forming process of each heat exchange segment 101 are not interfered with by the position of other heat exchange segments 101 in the heat exchange tube 10, thereby reducing the difficulty of forming the heat exchange segments 101. Furthermore, within a certain spatial range, the smaller the spacing between adjacent heat exchange segments 101, the more likely interference will occur during the forming process. However, the forming of the spliced ​​heat exchange segments 101 in this application is not affected by the arrangement spacing. Therefore, the arrangement spacing of the heat exchange segments 101 can be reduced, thereby arranging more heat exchange segments 101 within a certain spatial range, increasing the heat exchange area, and improving the heat exchange effect.

[0120] Taking the heat exchange tube 10 shown in Figures 3 and 4 as an example, the heat exchange section 101 includes two straight sections 11 and a bent section 12 connected between the two straight sections 11. The straight section 11 extends along the first direction X, and several heat exchange sections 101 are arranged along the second direction Y. If the heat exchange tube 10 is an integral part, the bent section 12 of the heat exchange section 101 is easily interfered with by the adjacent heat exchange sections 101 in the second direction Y during the bending process, and the smaller the distance between adjacent heat exchange sections 101 in the second direction Y, the easier it is to cause interference. However, the heat exchange section 101 formed separately in the present application is not interfered with by other heat exchange sections 101 during the forming process. Therefore, the distance between adjacent heat exchange sections 101 in the second direction Y can be as small as possible, for example, direct contact without interference problems, thereby allowing more heat exchange sections 101 to be arranged in the second direction Y, thereby increasing the overall heat exchange area.

[0121] Taking the heat exchange section 101 shown in Figure 5 as an example, the heat exchange tube 10 includes two heat exchange sections 101, namely a first heat exchange section 101 and a second heat exchange section 101. The first heat exchange section 101 includes two straight sections 11 and a bent section 12 connected between the two straight sections 11. The straight sections 11 extend along a first direction X. The second heat exchange section 101 includes three straight sections 11 extending along the first direction X, a semicircular bent section 12, a straight section 11 extending along a second direction Y, and two quarter-circular bent sections 12. The first heat exchange section 101 is located in the U-shaped area 50 enclosed by the second heat exchange section 101, so that the forming of the bending section 12 of the first heat exchange section 101 is easily interfered with by the second heat exchange section 101, and the forming of the three bending sections 12 of the second heat exchange section 101 is easily interfered with by the first heat exchange section 101; by setting the first heat exchange section 101 and the second heat exchange section 101 into a splicing structure, the two heat exchange sections 101 can be formed separately without interfering with each other.

[0122] It is worth noting that among the multiple straight sections 11 of the second heat exchange section 101, the straight section 11 extending along the second direction Y makes the distance between the two straight sections 11 connected to the quarter-arc bent section 12 larger. Therefore, the molding of the three bent sections 12 of the second heat exchange section 101 is not interfered with by other parts. The four straight sections 11 and the three bent sections 12 of the second heat exchange section 101 can be molded as one piece to reduce the number of splicing of the heat exchange tube 10 and reduce the risk of leakage.

[0123] According to the heat exchange tube 10 of the embodiment of the present application, the multiple heat exchange sections 101 are separately formed and connected in sequence, so that the bending section 12 and the straight section 11 of each heat exchange section 101 are not interfered with by other heat exchange sections 101 during the forming process, which reduces the difficulty of forming and is conducive to improving production efficiency; moreover, there is no need to increase the spacing between the multiple heat exchange sections 101 of the heat exchange tube 10 to avoid interference in the forming process. Within a certain spatial range, the heat exchange tube 10 can be arranged more densely to increase the heat exchange area, and the extension path of the heat exchange tube 10 from the inlet to the outlet can also be more flexible and changeable, which is conducive to meeting the temperature control requirements of different temperature field distributions. In addition, the splicing of multiple heat exchange sections 11 is achieved through the overlap structure 13, and the plug-in connection method is more convenient for assembly, and the positioning between the multiple heat exchange sections 101 is precise, without the need to set other connecting and matching components, which is conducive to reducing costs.

[0124] According to some embodiments of the present application, as shown in Figures 7 and 8 , of the two straight sections 11 connected by the overlapping structure 13, the end of one straight section 11 forms a first plug-in portion 131, and the end of the other straight section 11 forms a second plug-in portion 132. In other words, the two heat exchange sections 101 are directly plugged together via the straight sections 11, which not only reduces plug-in gaps and the risk of leakage, but also reduces the number of plug-in steps and improves splicing efficiency.

[0125] In some embodiments, as shown in Figure 7, the inner circumference of the first plug-in portion 131 is coplanar with the inner circumference of the connected heat exchange section 101, the second plug-in portion 132 is formed as a flared section, and the inner circumference size of the second plug-in portion 132 is larger than the inner circumference size of the connected heat exchange section 101.

[0126] The inner circumference of the first plug-in portion 131 is coplanar with the inner circumference of the connected heat exchange section 101, that is, perpendicular to the plug-in direction, the size of the inner circumference of the first plug-in portion 131 is equal to the size of the inner circumference of the heat exchange section 101. For example, the inner circumference of the first plug-in portion 131 and the inner circumference of the connected heat exchange section 101 are cylindrical surfaces with equal diameters.

[0127] A flared section refers to a section in which the inner circumference of the second plug-in portion 132 is larger than the inner circumference of the connected heat exchange section 101, perpendicular to the plug-in direction. For example, the inner circumference of the second plug-in portion 132 and the inner circumference of the connected heat exchange section 101 are cylindrical surfaces of different diameters, with the second plug-in portion 132 having the larger diameter. Optionally, the flared section can be formed by flaring the end of the straight section 11. This eliminates the need for integral machining during the molding process of the heat exchange section 101. Whether or not to flare the section can be flexibly determined based on the placement of the heat exchange section 101. This facilitates standardization of the heat exchange section 101 and reduces production costs.

[0128] The first plug-in portion 131 is inserted into the flared section, allowing the heat exchange section 101 connected to the flared section to limit the insertion depth of the first plug-in portion 131, preventing the first plug-in portion 131 from being inserted too deeply and affecting the extension length of the heat exchange tube 10. Furthermore, the inner circumference of the first plug-in portion 131 is coplanar with the inner circumference of the connected heat exchange section 101, making it less likely that the first plug-in portion 131 will increase the flow resistance within the connected heat exchange section 101. The larger inner circumference of the flared section can reduce the impact of the first plug-in portion 131 on the flow resistance within the connected heat exchange section 101 after insertion, thereby reducing the overall flow resistance of the heat exchange tube 10.

[0129] In other embodiments, as shown in Figure 8, the first plug-in portion 131 is formed as a necked section and the outer circumferential surface size of the first plug-in portion 131 is smaller than the outer circumferential surface size of the connected heat exchange section 101, and the outer circumferential surface of the second plug-in portion 132 is coplanar with the outer circumferential surface of the connected heat exchange section 101.

[0130] A necked section refers to a section where the outer circumference of the first plug-in portion 131 is smaller than the outer circumference of the connected heat exchange section 101, perpendicular to the plug-in direction. Optionally, the necked section can be formed by necking the end of the straight section 11. This eliminates the need for an integrally formed necked section during the heat exchange section 101 molding process. Whether to perform necking can be flexibly determined based on the placement of the heat exchange section 101. This facilitates standardization of the heat exchange section 101 and reduces production costs.

[0131] The tapered section is inserted into the second plug-in portion 132, allowing the heat exchange section 101 connected to the tapered section to cooperate with the second plug-in portion 132 to achieve a limited insertion position, preventing the first plug-in portion 131 from being inserted too deeply and affecting the extension length of the heat exchange tube 10. Furthermore, the outer circumferential surface of the second plug-in portion 132 is coplanar with the outer circumferential surface of the connected heat exchange section 101, which helps to improve the flatness of the outer surface of the heat exchange tube 10. For example, the upper surface of the heat exchange tube 10 shown in Figure 8 is formed into a flat surface, allowing the entire upper surface of the heat exchange tube 10 to contact and exchange heat with the component to be heat exchanged, thereby reducing thermal resistance and improving heat exchange efficiency.

[0132] According to some embodiments of the present application, as shown in Figures 9-12 , the heat exchange tube 10 further includes a connector 20. The ends of the connector 20 are respectively connected to the ends of the two straight sections 11 of two adjacent heat exchange sections 101 via a lap joint structure 13. One of the ends of the connector 20 and the ends of the straight sections 11 forms a first plug-in portion 131, and the other forms a second plug-in portion 132.

[0133] Both ends of the connecting joint 20 are respectively connected to the ends of the two straight sections 11 of two adjacent heat exchange sections 101 through overlapping structures 13 . In other words, two overlapping structures 13 are formed between the two adjacent heat exchange sections 101 .

[0134] One of the ends of the connector 20 and the end of the straight section 11 is formed as a first plug-in portion 131, and the other is formed as a second plug-in portion 132. Specifically, the first plug-in portion 131 connected to the straight section 11 can be inserted into the second plug-in portion 132 connected to the connector 20, or the first plug-in portion 131 connected to the connector 20 can be inserted into the second plug-in portion 132 connected to the straight section 11. Furthermore, both ends of the connector 20 can be formed as the first plug-in portion 131, or both ends can be formed as the second plug-in portion 132, or one can be the first plug-in portion 131 and the other can be the second plug-in portion 132, all of which are within the scope of protection of this application.

[0135] Among them, in the embodiment where both ends of the connecting joint 20 are the first plug-in part 131 or the second plug-in part 132, the ends of the two connected heat exchange sections 101 are both the second plug-in part 132 or the first plug-in part 131, which is beneficial to improving the structural consistency of the two heat exchange sections 101, and is more conducive to the heat exchange section 101 being formed into a standard part, reducing production costs and improving production efficiency.

[0136] Compared to the heat exchange section 101, the connecting joint 20 has a shorter extension length, is easier to mold, and offers more flexible structural configuration. Therefore, the connecting joint 20 indirectly connects the two heat exchange sections 101. A sealing structure, such as a solder layer, can be provided on the connecting joint 20. After the connecting joint 20 and the heat exchange section 101 are plugged together, they can be directly heated and welded to achieve a seal. Heat exchange section 101 does not require a solder layer or other sealing structure, resulting in a simpler structure. For example, it can be extruded from a single material, rather than being limited by the inability to extrusion mold composite materials. This reduces the molding difficulty of the heat exchange section 101 and improves production efficiency. Furthermore, extrusion molding provides a more reliable seal for the heat exchange section 101.

[0137] In some embodiments of the present application, as shown in Figures 9 and 10, in the overlapping structure 13 connecting the straight section 11 and the connecting joint 20, the first plug-in portion 131 is formed as a necked section; or the second plug-in portion 132 is formed as a flared section; or the first plug-in portion 131 is formed as a necked section and the second plug-in portion 132 is formed as a flared section.

[0138] Among them, the necked section means that the outer circumference size of the necked section is smaller than the outer circumference size of the connected component in the direction perpendicular to the plug-in; the expanded section means that the inner circumference size of the expanded section is larger than the inner circumference size of the connected component in the direction perpendicular to the plug-in.

[0139] By providing at least one of the constricted section and the expanded section, the insertion limit of the overlap structure 13 can be achieved, so that the insertion depth is not too large and affects the extension length of the heat exchange tube 10. The first plug-in portion 131 is formed as a constricted section. After the second plug-in portion 132 is inserted, it is conducive to a smoother transition between the outer peripheral surface of the straight section 11 and the outer peripheral surface of the connecting joint 20, which is conducive to improving the flatness of the outer surface of the heat exchange tube 10, so that the outer surface of the heat exchange tube 10 can fully contact and exchange heat with the components to be heat exchanged, reducing thermal resistance and improving heat exchange efficiency. The second plug-in portion 132 is formed as a expanded section. After the first plug-in portion 131 is inserted into the expanded section, it is conducive to a smoother transition between the inner peripheral surface of the straight section 11 and the inner peripheral surface of the connecting joint 20, reducing the influence of the overlap structure 13 on flow resistance, thereby reducing the overall flow resistance of the heat exchange tube 10.

[0140] For example, in some specific embodiments, as shown in FIG9 , the second plug-in portion 132 connected to the connector 20 is formed as a flared section with an inner circumference larger than the inner circumference of the connector 20, and the inner circumference of the first plug-in portion 131 is coplanar with the inner circumference of the straight section 11. In some specific embodiments, as shown in FIG10 , the first plug-in portion 131 connected to the straight section 11 is formed as a constricted section with an outer circumference smaller than the outer circumference of the straight section 11, and the outer circumference of the second plug-in portion 132 is coplanar with the outer circumference of the connector 20.

[0141] In other embodiments of the present application, as shown in Figures 11 and 12, the outer circumference of one of the straight section 11 and the connecting joint 20 is coplanar with the outer circumference of the connected first plug-in portion 131, and the inner circumference of the other is coplanar with the inner circumference of the connected second plug-in portion 132.

[0142] In other words, the ends of the straight section 11 and the connecting joint 20 do not need to be expanded or shrunken. The connecting joint 20 can be directly put on the outside of the straight section 11 or inserted into the straight section 11 to achieve plug-in connection, which is beneficial to reducing assembly processes and improving production efficiency.

[0143] For example, as shown in Figure 11, the ends of the connecting joint 20 are inserted into the straight sections 11 of the two heat exchange sections 101, so that the ends of the straight sections 11 of the two heat exchange sections 101 face each other and contact each other, improving the flatness of the outer circumference of the heat exchange tube 10, which is beneficial for improving the contact and heat exchange effect with the heat exchange component. For example, as shown in Figure 12, the ends of the connecting joint 20 are sleeved outside the straight sections 11 of the two heat exchange sections 101, so that the ends of the straight sections 11 of the two heat exchange sections 101 face each other and contact each other, improving the flatness of the inner circumference of the heat exchange tube 10, which is beneficial for reducing flow resistance.

[0144] In some embodiments, the outer circumference of the first plug portion 131 is connected to the inner circumference of the second plug portion 132. Connection methods include, but are not limited to, bonding and welding. The large connection area between the first plug portion 131 and the second plug portion 132 helps improve connection and sealing reliability.

[0145] In some embodiments, the first plug-in portion 131 and the second plug-in portion 132 are connected by welding. This connection method is simple, firm, and has good sealing properties. For example, in some embodiments where two heat exchange segments 101 are directly connected, solder can be applied to at least one location on the outer circumference of the first plug-in portion 131 and the inner circumference of the second plug-in portion 132 before plugging together and then welding at elevated temperatures. In some embodiments where two heat exchange segments 101 are connected via a connecting joint 20, the connecting joint 20 can have a solder layer, and the heat exchange segments 101 and the connecting joint 20 can be directly heated and welded after plugging together.

[0146] In some embodiments of the present application, as shown in Figures 3 to 5, each heat exchange section 101 is integrally formed from a single tube, eliminating the assembly process between the straight section 11 and the bent section 12, improving production efficiency, and eliminating the need for splicing and sealing, which is beneficial to reducing the risk of sealing failure.

[0147] In some embodiments, as shown in FIG3 , the heat exchange tube 10 is a flat tube. In other words, the dimensions of the heat exchange tube 10 vary in at least two directions perpendicular to the path along which the heat exchange tube 10 extends. For example, as shown in FIG3 , the thickness of the heat exchange tube 10 in the vertical direction (the third direction Z shown in FIG7 ) is less than its width in the horizontal direction, forming a flat tube.

[0148] According to some embodiments of the present application, as shown in FIG3 and FIG4 , the heat exchange section 101 includes a bent section 12 and two straight sections 11 , and the two straight sections 11 are respectively connected to both ends of the bent section 12 .

[0149] By changing the bending angle of the bent section 12, the angle between the two connected straight sections 11 can be changed, thereby making the extension path of the heat exchange section 101 more flexible and changeable. For example, if the bending angle of the bent section 12 is 90°, the corresponding two connected straight sections 11 can be perpendicular to each other; if the bending angle of the bent section 12 is 180°, the corresponding two connected straight sections 11 can be parallel to each other. The heat exchange section 101 is generally formed into a U-shaped, V-shaped, or L-shaped structure. The heat exchange section 101 includes fewer bent sections 12, making the heat exchange section 101 easier to form. In addition, the heat exchange section 101 can be spliced ​​with other heat exchange sections 101 through the straight sections 11 at both ends, making splicing easier and less likely to cause sealing failure at the splicing.

[0150] In some embodiments, as shown in Figures 3 and 4 , the two straight sections 11 of the heat exchange section 101 extend along a first direction X and are arranged along a second direction Y. The first direction X and the second direction Y are arranged at an angle. In two connected heat exchange sections 101, a straight section 11 of one heat exchange section 101 is opposite and connected to a straight section 11 of the other heat exchange section 101 along the first direction X.

[0151] The heat exchange section 101 generally forms a U-shaped structure. The openings of the U-shaped structures of two connected heat exchange sections 101 can be arranged facing each other along a first direction X and staggered along a second direction Y. The straight sections 11 of the two connected heat exchange sections 101 are connected by an overlap structure 13, while the two unconnected straight sections 11 are located on either side of the overlap structure 13 in the second direction Y. This allows the two straight sections 11 of the U-shaped heat exchange section 101 to be connected to two heat exchange sections 101, respectively, to achieve a series connection of multiple heat exchangers. The heat exchange tube 10 is formed as a serpentine tube that extends back and forth along the first direction X, which effectively increases the heat exchange area and facilitates the splicing of multiple heat exchange sections 101.

[0152] In some embodiments of the present application, as shown in FIG4 , the lengths of the two straight sections 11 at the two ends of the splicing path are greater than the length of the middle straight section 11. The two straight sections 11 are parallel to each other and respectively have an inlet and an outlet for the heat exchange tube 10, and the inlet and outlet are located at the same end of the two straight sections 11 in the longitudinal direction.

[0153] The intermediate straight section 11 refers to the other straight sections 11 located between the two straight sections 11 at the ends of the splicing path, i.e., the extension path of the heat exchange tube 10. For example, as shown in FIG4 , the heat exchange section 101 is a U-shaped structure spliced ​​together to form a serpentine heat exchange tube 10. The two straight sections 11 located on either side of the second direction Y are the two straight sections 11 at the ends of the splicing path.

[0154] The inlet and outlet of the heat exchange tube 10 are used for heat exchange medium to flow into and out of the heat exchange tube 10. The inlet and outlet are located at the same end of the two straight sections 11 in the longitudinal direction. For example, as shown in FIG4 , the inlet and outlet are located at the same end of the corresponding straight sections 11 in the first direction X.

[0155] The straight sections 11 at both ends are longer than the middle straight section 11, allowing them to be closer to the edge of the heat exchange tube 10 in the longitudinal direction, facilitating connection with an external flow path. For example, as shown in Figure 4 , the straight sections 11 at both ends extend beyond the edge of the middle heat exchange section 101 in the first direction X. Furthermore, the inlet and outlet of the heat exchange tube 10 are located at the same end, placing them closer together and with a smaller spacing, further facilitating connection between the heat exchange tube 10 and an external flow path.

[0156] According to some embodiments of the present application, as shown in FIG4 , the heat exchange tube 10 includes a plurality of straight sections 11 and at least one bent section 12 connected in sequence, the straight section 11 extends along a first direction X and the plurality of straight sections 11 are arranged at intervals along a second direction Y, the first direction X and the second direction Y are arranged at an angle, and the at least one bent section 12 connects and connects the plurality of straight sections 11 in sequence.

[0157] Multiple straight sections 11 are arranged at intervals along the second direction Y and are connected and communicated in sequence through the bending sections 12, which means that the channels in the straight sections 11 are not directly connected, but are indirectly connected through the bending sections 12. In space, a certain gap can be formed between the straight sections 11, or they can contact each other.

[0158] By connecting the straight section 11 with the bent section 12, the direction of the heat exchange tube 10 extending from the inlet to the outlet can be reversed. The heat exchange tube 10 is formed into a serpentine structure, which is conducive to enabling the heat exchange tube 10 to cover a larger area within a certain spatial range, thereby increasing the heat exchange area with the component to be heat exchanged, increasing the heat exchange efficiency and improving the temperature uniformity of the component to be heat exchanged.

[0159] In some embodiments, as shown in Figure 4, the bending section 12 includes an arc section 121 and an inclined section 122, the inclined section 122 connects the arc section 121 and one of the two adjacent straight sections 11, and the inclined section 122 is inclined along the first direction X away from the arc section 121 and toward the direction close to the other of the two adjacent straight sections 11.

[0160] Two adjacent straight segments 11 refer to two adjacent straight segments 11 in the second direction Y. The inclined segment 122 extends obliquely. As shown in FIG4 , the arc segment 121 is semicircular in shape. The rear end of the inclined segment 122 is connected to one end of the arc segment 121, and the front end is connected to the left-hand straight segment 11 of the two straight segments 11. The inclined segment 122 tilts from back to front and right, connecting the right-hand straight segment 11 of the two straight segments 11 to the other arc-shaped segment. Thus, the inclined segment 122 can reduce the spacing between the two straight segments 11 in the second direction Y, making the spacing between the two straight segments 11 smaller than the curvature diameter of the inner edge of the arc segment 121. As a result, the distance between any two straight sections 11 connected by the bending section 12 is reduced, and the space occupied by all the straight sections 11 of the heat exchange tube 10 in the second direction Y is reduced. In other words, when the required heat exchange range in the second direction Y is certain, more straight sections 11 can be arranged, thereby increasing the heat exchange area within a certain spatial range, improving the heat exchange effect and the heat exchange uniformity of different areas of the heat exchange component.

[0161] In some embodiments, as shown in FIG4 , the bent section 12 includes an arcuate section 121 and an inclined section 122. One end of the inclined section 122 is connected to one end of the arcuate section 121, and the other end of the inclined section 122 and the other end of the arcuate section 121 are respectively connected to two adjacent straight sections 11. The arcuate section 121 is formed by bending along an arc, while the inclined section 122 can be formed by extending along a straight line. The arcuate section 121 and the inclined section 122 require changing the bending method during the forming process. By including the inclined section 122 in the bent section 12, the number of times the bending method needs to be switched during the forming process can be reduced, thereby improving production efficiency and reducing the forming difficulty.

[0162] In other embodiments, the bent section 12 includes an arcuate section 121 and two inclined sections 122, with the two inclined sections 122 respectively connecting the ends of the arcuate section 121 and two adjacent straight sections 11. Reducing the spacing between the straight sections 11 provides a better effect. Furthermore, if the spacing requirement is kept constant, the required inclination angle of each inclined section 122 can be reduced, thereby reducing the difficulty of forming.

[0163] In some embodiments, as shown in FIG4 , the inner edge of the bent section 12 has a bending diameter of D. For example, the inner edge of the arcuate section 121 has a bending diameter of D. The spacing between the two straight sections 11 of the same heat exchange section 101 in the second direction Y is 60% to 70% of D. If the bent section 12 does not include the inclined section 122 but only includes the arcuate section 121, the spacing between the two straight sections 11 of the same heat exchange section 101 is equal to D. By providing the inclined section 122, the spacing between the two straight sections 11 of the same heat exchange section 101 can be reduced to make the structure more compact. If the inclination angle of the inclined section 122 is too small, the spacing reduction effect will not be significant, and the improvement in the heat exchange area and heat exchange effect will not be significant. If the inclination angle of the inclined section 122 is too large, it will easily cause positional interference between the inclined section 122 and the straight section 11 of the same heat exchange section 101 during processing, increasing the difficulty of forming. Within this spacing range, the space occupied by the two straight sections 11 of the heat exchange section 101 in the second direction Y can be effectively reduced, effectively increasing the heat exchange area, while also facilitating the processing and molding of the inclined section 122, thereby facilitating the independent molding of the heat exchange section 101. In some specific embodiments, the spacing between the two straight sections 11 of the same heat exchange section 101 in the second direction Y is 60%D, 62%D, 65%D, 68%D, 70%D, etc.

[0164] In some embodiments, as shown in FIG4 , the inner edge of the bent section 12 has a bending diameter D, and the width of the straight section 11 along the second direction Y is L. The two straight sections 11 of the heat exchange section 101 are a first straight section 11 and a second straight section 11. Of two adjacent heat exchange sections 101, the first straight section 11 of one heat exchange section 101 and the second straight section 11 of the other heat exchange section 101 are opposite to each other along the first direction X and connected by an overlapping structure 13. The second straight section 11 of one heat exchange section 101 and the first straight section 11 of the other heat exchange section 101 are respectively located on either side of the overlapping structure 13 in the second direction Y, and the spacing between the first straight section 11 and the second straight section 11 located on either side of the overlapping structure 13 is 60% (2D+L) to 70% (2D+L).

[0165] In other words, the four straight sections 11 of the two heat exchange sections 101 are formed into three rows in the second direction Y, and the spacing between the two rows of straight sections 11 on both sides of the second direction Y is 60% (2D+L) to 70% (2D+L).

[0166] If the bent section 12 does not include the inclined section 122 and only includes the arcuate section 121, the spacing between the two rows of straight sections 11 on either side of the second direction Y is 2D + L. By providing the inclined section 122, the spacing between the three rows of straight sections 11 can be reduced, making the structure more compact, thereby reducing the overall space occupied by the two connected heat exchange sections 101 along the second direction Y. Within this spacing range, the space occupied by the two straight sections 11 of the heat exchange section 101 in the second direction Y can be effectively reduced, and the overall space occupied by the connected heat exchange sections 101 in the second direction Y can also be reduced, thereby achieving a better effect of increasing the heat exchange area. Furthermore, the reasonable inclination angle of the inclined section 122 facilitates the independent molding of the heat exchange section 101.

[0167] For example, in an embodiment where the component to be heat exchanged is a battery 1000, the battery 1000 includes a battery assembly 200. The battery assembly 200 includes multiple rows of battery 1000 groups arranged along the second direction Y, and each row of battery 1000 groups includes multiple battery cells 210 arranged along the first direction X. By adjusting the inclination angle of the inclined section 122, the multiple rows of straight sections 11 of the heat exchange section 101 can be arranged in a one-to-one correspondence with the multiple rows of battery 1000 groups. That is, each row of battery 1000 groups can contact the straight sections 11 to achieve heat exchange, avoiding the situation where the battery 1000 groups are unable to contact and exchange heat with the heat exchange tubes 10 but are between two adjacent rows of straight sections 11.

[0168] According to some embodiments of the present application, as shown in Figure 13, the heat exchange tube 10 includes a first heat exchange tube 102, and the first heat exchange tube 102 includes a first heat exchange channel 51 and a second heat exchange channel 52; the second heat exchange channel 52 is bent to form a U-shaped area 50, and the first heat exchange channel 51 is bent and arranged in the U-shaped area 50, and is bent and connected to the second heat exchange channel 52, for example, by a bending section 12.

[0169] Specifically, the battery 1000 may include multiple battery cells 210 , and the first heat exchange tube 102 is used to exchange heat with the multiple battery cells 210 of the battery 1000 , so that the temperature of the battery 1000 can be limited to a safe operating temperature, thereby improving the operating reliability of the battery 1000 .

[0170] Among them, the above-mentioned "the second heat exchange channel 52 is bent to form a U-shaped area 50, and the first heat exchange channel 51 is bent and arranged in the U-shaped area 50" is intended to explain that the second heat exchange channel 52 is arranged on the circumferential periphery of the first heat exchange channel 51, and can be arranged on the three circumferential sides of the first heat exchange channel 51. The second heat exchange channel 52 can be arranged closer to the peripheral position of the battery 1000 relative to the first heat exchange channel 51.

[0171] The second heat exchange channel 52 is bent to form a U-shaped area 50 , that is, in the direction from one end of the second heat exchange channel 52 toward the other end, the second heat exchange channel 52 extends along the U-shaped line to form the U-shaped area 50 .

[0172] The first heat exchange channel 51 is bent and arranged in the U-shaped area 50, that is, the first heat exchange channel 51 is arranged in the space enclosed by the second heat exchange channel 52, and the first heat exchange channel 51 extends along a non-straight line on the inner side of the second heat exchange channel 52 and has at least one bending position.

[0173] It should be noted that this embodiment only limits the first heat exchange channel 51 to being bent within the U-shaped region 50, and does not limit the bending form of the first heat exchange channel 51. That is, the specific bending form of the first heat exchange channel 51 can be designed according to the heat exchange requirements of the battery 1000. For example, the first heat exchange channel 51 can extend along the length direction of the battery cell 210 (i.e., the second direction Y in FIG. 13 ), and after extending to a certain length, bend toward the width direction of the battery cell 210 (i.e., the first direction X in FIG. 13 ), and then continue to extend along the length direction of the battery cell 210 and bend along the width direction. Alternatively, the first heat exchange channel 51 can extend along the width direction of the battery cell 210, and after extending to a certain length, bend toward the length direction of the battery cell 210, and then continue to extend along the width direction of the battery cell 210 and bend along the length direction.

[0174] The first heat exchange channel 51 and the second heat exchange channel 52 are connected in a bent manner, that is, one end of the first heat exchange channel 51 is connected to one end of the second heat exchange channel 52, and the connection position between the first heat exchange channel 51 and the second heat exchange channel 52 is a bent non-linear structure. For example, the connection position between the first heat exchange channel 51 and the second heat exchange channel 52 can be bent into an arc segment.

[0175] Among them, the first heat exchange channel 51 and the second heat exchange channel 52 are connected, so that one of the end of the first heat exchange channel 51 away from the second heat exchange channel 52 and the end of the second heat exchange channel 52 away from the first heat exchange channel 51 can be used as the liquid inlet end and the other can be used as the liquid outlet end. Therefore, when the first heat exchange tube 102 is exchanging heat, the heat exchange medium can flow from the first heat exchange channel 51 to the second heat exchange channel 52, or from the second heat exchange channel 52 to the first heat exchange channel 51.

[0176] It is understandable that as the heat exchange medium flows through the first heat exchange tube 102, the temperature of the heat exchange medium gradually changes, resulting in a gradual decrease in the heat exchange effect. For example, when the heat exchange tube 10 cools the battery assembly 200, the heat from the battery cells 210 is gradually transferred to the heat exchange medium, causing the temperature of the heat exchange medium to gradually increase as it flows along the first heat exchange tube 102, the temperature difference between the heat exchange medium and the battery cells 210 gradually decreases, and the heat exchange efficiency gradually decreases. When the heat exchange tube 10 heats the battery assembly 200, the heat in the heat exchange medium is gradually transferred to the battery cells 210, causing the temperature of the heat exchange medium to gradually decrease as it flows along the first heat exchange tube 102, the temperature difference between the heat exchange medium and the battery cells 210 gradually decreases, and the heat exchange efficiency gradually decreases.

[0177] In this embodiment, when the heat exchange tube 10 is dissipating heat and cooling the battery assembly 200, the heat exchange medium can also flow from the first heat exchange channel 51 to the second heat exchange channel 52, but the heat exchange medium can also flow from the second heat exchange channel 52 to the first heat exchange channel 51. When the heat exchange medium flows from the first heat exchange channel 51 to the second heat exchange channel 52, the battery cells 210 in the middle of the battery 1000 (that is, the internal battery cells 210 on the inner side of the periphery) can be cooled first, and then the battery cells 210 at the peripheral edge of the battery 1000 can be cooled. Since the heat dissipation of the battery cells 210 at the peripheral edge of the battery 1000 is better than that of the internal battery cells 210, the heat exchange medium with a lower temperature in the first heat exchange channel 51 can better meet the heat dissipation requirements of the battery cells 210 in the middle of the battery 1000. At the same time, due to The battery cells 210 at the peripheral position can dissipate heat naturally directly to the external environment. When the temperature of the heat exchange medium in the second heat exchange channel 52 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 210, so that the cooling effects obtained by the battery cells 210 at the peripheral position of the battery 1000 and the battery cells 210 at the middle position of the battery 1000 are roughly the same, and the temperatures of the battery cells 210 at the peripheral position of the battery 1000 and the battery cells 210 at the middle position of the battery 1000 after cooling and heat dissipation are relatively consistent, making the temperature distribution inside the battery 1000 more uniform.

[0178] When the heat exchange tube 10 heats the battery assembly 200, the heat exchange medium can also flow from the first heat exchange channel 51 to the second heat exchange channel 52, but the heat exchange medium can also flow from the second heat exchange channel 52 to the first heat exchange channel 51. For example, when the heat exchange medium flows from the second heat exchange channel 52 to the first heat exchange channel 51, the battery cells 210 on the periphery of the battery assembly 200 can be heated first, and then the heat exchange medium heats the battery cells 210 in the middle of the battery assembly 200. Since the battery cells 210 on the periphery of the battery 1000 dissipate more heat to the external environment, the temperature of the battery cells 210 on the periphery of the battery 1000 is more likely to drop. The heat exchange medium first heats the battery cells 210 on the periphery of the battery 1000. The higher temperature heat exchange medium can increase the temperature of the battery cells 210 on the periphery while compensating for the heat lost by the battery cells 210 due to heat dissipation to the external environment. To meet its heating needs, the battery cells 210 in the middle of the battery assembly 200 have less contact area with the external environment and less heat loss. The lower temperature heat exchange medium flowing in the first heat exchange channel 51 can cooperate with the heat generated by the battery cells 210 themselves to meet its heating needs well. As a result, the heating effects obtained by the battery cells 210 on the periphery of the battery 1000 and the battery cells 210 in the middle of the battery assembly 200 are basically the same, and the temperatures of the battery cells 210 on the periphery of the battery 1000 and the battery cells 210 in the middle of the battery assembly 200 after heating are relatively consistent, making the temperature distribution in the battery 1000 more uniform.

[0179] In the above embodiment, the second heat exchange channel 52 is bent to form a U-shaped area 50, and the first heat exchange channel 51 is bent and arranged in the U-shaped area 50. When the heat exchange tube 10 exchanges heat with the battery assembly 200, the U-shaped area 50 formed by the outer second heat exchange channel 52 can be opposite to the outer battery cell 210 of the battery, and the first heat exchange channel 51 in the U-shaped area 50 can be opposite to the internal battery cell 210, so that the heat exchange tube 10 can make up for the internal and external temperature difference caused by the heat exchange between the outer battery cell 210 and the environment, so that the heat exchange effect of the battery cell 210 outside the battery assembly 200 and the battery cell 210 inside the battery assembly 200 tends to be consistent, thereby improving the temperature uniformity of the battery 1000, thereby improving the service life of the battery 1000 to a certain extent.

[0180] According to some embodiments of the present application, as shown in FIG. 13 , the first heat exchange channel 51 may include a plurality of first heat exchange portions 511 , and the plurality of first heat exchange portions 511 are arranged at intervals and are connected in series by bending.

[0181] That is, the plurality of first heat exchange sections 511 are sequentially connected, and the connection between two connected first heat exchange sections 511 is bent. For example, the two connected first heat exchange sections 511 can be connected by a bent section 12. The number of first heat exchange sections 511 can be two, three, four, five, or more.

[0182] It should be noted that the first heat exchange portion 511 can have various shapes. For example, the first heat exchange portion 511 can be linear or curved. The first heat exchange portion 511 can also extend in various directions. For example, it can extend along the length or thickness of the battery cell 210. In this way, multiple first heat exchange portions 511 are connected in a series of bends, allowing the first heat exchange channel 51 to form an S-shaped, X-shaped, or V-shaped heat exchange channel.

[0183] In the above embodiment, on the one hand, by setting up multiple first heat exchange parts 511, the heat exchange area of ​​the first heat exchange channel 51 can be increased, and then the heat exchange area of ​​the first heat exchange tube 102 can be increased, thereby improving the heat exchange effect of the first heat exchange tube 102; on the other hand, since the internal battery cells 210 are wrapped by the external battery cells 210, the temperature difference between the internal battery cells 210 is not large. Therefore, by setting up multiple first heat exchange parts 511, the overall heat exchange effect can be improved while reducing the temperature difference between the internal and external battery cells 210.

[0184] According to some embodiments of the present application, as shown in FIG13 , a plurality of first heat exchange portions 511 are arranged at intervals along the second direction Y, and each first heat exchange portion 511 extends linearly along the first direction X, and the first direction X and the second direction Y are arranged at an angle.

[0185] The phrase "the first direction X and the second direction Y are arranged at an angle" is intended to illustrate that the first direction X and the second direction Y can be arranged perpendicularly or intersectingly, but not perpendicularly. For example, the first direction X and the second direction Y can be arranged at an angle of 30°, 60°, 80°, 120°, 150°, or 170°. For example, as shown in FIG13 , the first direction X is the thickness direction of the battery cell 210, and the second direction Y is the length direction of the battery cell 210. The first heat exchange portions 511 extend along the thickness direction of the battery cell 210 and are spaced apart along the length direction of the battery cell 210. In this way, multiple first heat exchange portions 511 are connected by bending to form an S-shaped heat exchange channel, enabling heat exchange between multiple battery cells 210.

[0186] In the above embodiment, by setting the first heat exchange part 511 to extend straightly along the first direction X, the production difficulty of the first heat exchange part 511 can be reduced, and the production complexity of the first heat exchange tube 102 can be reduced. At the same time, the straight tube can also increase the flow rate of the heat exchange medium, thereby improving the heat exchange effect of the first heat exchange tube 102.

[0187] According to some embodiments of the present application, as shown in Figure 13, the second heat exchange channel 52 may include: a second heat exchange part 521, a third heat exchange part 522 and a fourth heat exchange part 523, the second heat exchange part 521 extends along the first side circumference of the first heat exchange channel 51, the third heat exchange part 522 is connected between the second heat exchange part 521 and the first heat exchange channel 51, and extends along the second side circumference of the first heat exchange channel 51, the first end of the third heat exchange part 522 is connected to the second heat exchange part 521 at an angle, and the second end of the third heat exchange part 522 is connected to the first heat exchange channel 51 at an angle; the fourth heat exchange part 523 is communicated with the second heat exchange part 521, is connected to the second heat exchange part 521 at an angle, and extends along the third side circumference of the first heat exchange channel 51.

[0188] It can be understood that the fourth heat exchange part 523 is connected to the end of the second heat exchange part 521 away from the third heat exchange part 522, the fourth heat exchange part 523, the second heat exchange part 521 and the third heat exchange part 522 are connected in sequence to form a U-shaped area 50, and the first heat exchange channel 51 is arranged in the U-shaped area 50 and is connected to the end of the third heat exchange part 522 away from the second heat exchange part 521.

[0189] The first end of the third heat exchange portion 522 is connected to the second heat exchange portion 521 at an angle. That is, the third heat exchange portion 522 is connected to the second heat exchange portion 521, and the third heat exchange portion 522 and the second heat exchange portion 521 are not collinear or parallel, but are arranged at an angle greater than 0° and less than 180°. For example, the third heat exchange portion 522 and the second heat exchange portion 521 can be connected at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0190] The second end of the third heat exchange portion 522 is connected to the first heat exchange channel 51 at an angle; that is, the second end of the third heat exchange portion 522 is connected to the second heat exchange portion 521, and the second end of the third heat exchange portion 522 is arranged at an angle greater than 0° and less than 180° to the first heat exchange channel 51. For example, the second end of the third heat exchange portion 522 is connected to the first heat exchange channel 51 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0191] The fourth heat exchange portion 523 is in communication with the second heat exchange portion 521 and is connected to the second heat exchange portion 521 at an angle. That is, the fourth heat exchange portion 523 is connected to the second heat exchange portion 521 at an angle greater than 0° and less than 180°. For example, the fourth heat exchange portion 523 is connected to the second heat exchange portion 521 at an angle of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc.

[0192] It should be noted that this embodiment limits the second heat exchange channel 52 to be arranged on three sides of the circumference of the first heat exchange channel 51, and does not limit the specific positions of the second heat exchange part 521, the third heat exchange part 522 and the fourth heat exchange part 523 relative to the first heat exchange channel 51. Therefore, the specific positions of the second heat exchange part 521, the third heat exchange part 522 and the fourth heat exchange part 523 can be designed according to actual conditions. For example, if the second heat exchange part 521 can be arranged on one side of the first heat exchange channel 51 in the second direction Y, the third heat exchange part 522 and the fourth heat exchange part 523 are respectively arranged on both sides of the first heat exchange channel 51 in the first direction X; if the second heat exchange part 521 is arranged on one side of the first heat exchange channel 51 in the first direction X, the third heat exchange part 522 and the fourth heat exchange part 523 are respectively arranged on both sides of the first heat exchange channel 51 in the second direction Y.

[0193] In the above embodiment, by arranging the second heat exchange part 521, the third heat exchange part 522 and the fourth heat exchange part 523 on three sides of the first heat exchange channel 51 respectively, the second heat exchange channel 52 can surround the first heat exchange channel 51, thereby increasing the compactness of the arrangement of the first heat exchange tube 102, realizing the miniaturization of the structure of the first heat exchange tube 102, and thus facilitating the improvement of the volume energy density of the battery 1000. At the same time, the structure of the first heat exchange tube 102 can be simplified, and the processing and production of the heat exchange tube 10 can be facilitated.

[0194] According to some embodiments of the present application, as shown in Figure 13, the first heat exchange tube 102 may also include: a third heat exchange channel 53, the first heat exchange channel 51 is connected between the third heat exchange channel 53 and the second heat exchange channel 52, and the third heat exchange channel 53 is connected to the first heat exchange channel 51 at an angle.

[0195] That is to say, in the first heat exchange tube 102, the second heat exchange channel 52, the first heat exchange channel 51 and the third heat exchange channel 53 are connected in sequence, and the heat exchange medium can flow from the second heat exchange channel 52 through the first heat exchange channel 51 to the third heat exchange channel 53, or from the third heat exchange channel 53 through the first heat exchange channel 51 to the second heat exchange channel 52.

[0196] The third heat exchange channel 53 is connected to the first heat exchange channel 51 and is arranged at an angle greater than 0° and less than or equal to 180°. For example, the angle between the third heat exchange channel 53 and the first heat exchange channel 51 is 30°, 45°, 60°, 90°, 120°, 135°, or 150°, etc.

[0197] In the above embodiment, by providing the third heat exchange channel 53 , the heat exchange area of ​​the first heat exchange tube 102 can be further increased, thereby further improving the heat exchange effect of the first heat exchange tube 102 .

[0198] According to some embodiments of the present application, as shown in Figure 13, the first heat exchange channel 51 includes a plurality of first heat exchange parts 511, and the plurality of first heat exchange parts 511 are connected sequentially in the second direction Y; the third heat exchange channel 53 is arranged on the side of the first heat exchange channel 51 away from the third heat exchange part 522, and the third heat exchange channel 53 is connected to the one of the plurality of first heat exchange parts 511 that is closest to the second heat exchange part 521 along the second direction Y.

[0199] Specifically, the third heat exchange channel 53 is arranged adjacent to the fourth heat exchange portion 523 and between the fourth heat exchange portion 523 and the first heat exchange portion 511. Thus, the third heat exchange channel 53 is also arranged circumferentially outside the first heat exchange channel 51. This increases the circumferential heat exchange area of ​​the first heat exchange tube 102 and improves the heat exchange efficiency of the first heat exchange tube 102 at the circumferential side.

[0200] Furthermore, the third heat exchange channel 53 and the fourth heat exchange portion 523 can be arranged inside and outside the same side of the first heat exchange channel 51, thereby further increasing the heat exchange area at that location and improving heat exchange efficiency. Furthermore, because the third heat exchange channel 53 and the fourth heat exchange portion 523 are located at opposite ends of the first heat exchange channel 51 in the direction of heat exchange medium flow, they can exchange heat with the same area of ​​the battery assembly 200, thereby improving temperature uniformity in that area.

[0201] Furthermore, the third heat exchange channel 53 is connected to the one of the multiple first heat exchange parts 511 that is closest to the second heat exchange part 521 along the second direction Y. In this way, when heat exchange is performed with the battery assembly 200, in the first heat exchange tube 102, the temperature of the heat exchange medium in the first heat exchange part 511 closest to the second heat exchange part 521 and the heat exchange medium in the third heat exchange channel 53, as well as the temperature of the heat exchange medium in the second heat exchange part 521 and the fourth heat exchange part 523, are respectively the relatively highest temperature and the relatively lowest temperature in the first heat exchange tube 102, while the temperature of the remaining parts is in the middle.

[0202] Due to the heat dissipation effect of the battery 1000, the edge temperature of the battery 1000 is lower than the middle temperature. In this way, the second heat exchange part 521 and the first heat exchange part 511 closest to the second heat exchange part 521 exchange heat in the same area, and the third heat exchange channel 53 and the fourth heat exchange part 523 exchange heat in the same area, thereby further improving the temperature uniformity in the battery assembly 200, balancing the temperature difference of the battery assembly 200, and further improving the temperature uniformity of the battery assembly 200.

[0203] In the above embodiment, by adding a third heat exchange channel 53 and connecting the third heat exchange channel 53 to the one of the multiple first heat exchange parts 511 that is closest to the second heat exchange part 521 along the second direction Y, the heat exchange area can be increased, the temperature difference of the battery assembly 200 can be balanced, and the temperature uniformity of the battery assembly 200 can be improved.

[0204] According to some embodiments of the present application, as shown in Figure 13, the third heat exchange channel 53 extends along the second direction Y in a direction away from the second heat exchange portion 521, and the first heat exchange portion 511 extends along the first direction X, wherein the first direction X and the second direction Y are set at an angle.

[0205] Specifically, one end of the third heat exchange part 522 is connected to one of the multiple first heat exchange parts 511 that is farthest from the second heat exchange part 521 along the second direction Y, and the other end of the third heat exchange part 522 extends toward a first heat exchange part 511 closest to the second heat exchange part 521. At the same time, the fourth heat exchange part 523 also extends toward a first heat exchange part 511 farthest from the second heat exchange part 521.

[0206] Furthermore, the third heat exchange channel 53 is arranged on a side of the first heat exchange channel 51 away from the third heat exchange portion 522. In this case, the third heat exchange channel 53 and the fourth heat exchange portion 523 are arranged on the same outer side of the first heat exchange portion 511 in the circumferential direction. The third heat exchange channel 53 and the fourth heat exchange portion 523 are located at opposite ends of the first heat exchange channel 51 in the direction of fluid flow. When the third heat exchange channel 53 and the fourth heat exchange portion 523 jointly exchange heat with the same area of ​​the battery assembly 200, they can equalize temperature differences at the edge of the battery assembly 200, thereby improving temperature uniformity at the edge of the battery assembly 200.

[0207] In the above embodiment, by setting the third heat exchange channel 53 to extend along the second direction Y in the direction away from the second heat exchange part 521, the heat exchange area of ​​the first heat exchange tube 102 can be increased, and the heat exchange effect of the first heat exchange tube 102 on the battery cell 210 can be improved; at the same time, when the third heat exchange channel 53 and the fourth heat exchange part 523 jointly exchange heat with the battery assembly 200, the temperature difference in the edge area of ​​the battery assembly 200 can be balanced, thereby improving the temperature uniformity at the edge of the battery assembly 200.

[0208] As shown in Figures 3 and 13 , a heat exchange element 100 according to an embodiment of the present application includes a heat exchange tube 10 according to an embodiment of the present application. In some specific embodiments, as shown in Figures 3 and 4 , the heat exchange element 100 may further include a connector 40 , with both ends of the heat exchange tube 10 connected to the connector 40 for connection to other structures to enable heat exchange medium to flow into and out of the heat exchange tube 10.

[0209] In some embodiments where the heat exchange element 100 includes a plurality of heat exchange tubes 10 , the heat exchange element 100 may further include a current collector, and the plurality of heat exchange tubes 10 are connected in parallel via the current collector.

[0210] According to some embodiments of the present application, as shown in Figures 13 to 15, the heat exchange element 100 has one or more heat exchange tubes 10. When the number of heat exchange tubes 10 is multiple, the multiple heat exchange tubes 10 are arranged at intervals along the second direction Y, or arranged around each other, at least one heat exchange tube 10 is formed as the above-mentioned first heat exchange tube 102, and multiple heat exchange tubes 10 are arranged in parallel.

[0211] It is understood that the number of heat exchange tubes 10 in the heat exchange element 100 may be one, two, three, four, or more. When there are multiple heat exchange tubes 10, one of the multiple heat exchange tubes 10 may be formed as the first heat exchange tube 102, or two, three, four, or more heat exchange tubes 10 may be formed as the first heat exchange tube 102, or all of the multiple heat exchange tubes 10 may be formed as the first heat exchange tube 102.

[0212] In some specific embodiments, as shown in FIG13 , a plurality of heat exchange tubes 10 are arranged at intervals along the second direction Y. For example, as shown in FIG13 , the heat exchange element 100 may include two heat exchange tubes 10, which are arranged at intervals along the second direction Y. Furthermore, the two heat exchange tubes 10 may both be formed as first heat exchange tubes 102. For another example, the heat exchange element 100 may include three heat exchange tubes 10, which are arranged in sequence along the second direction Y. Furthermore, the two heat exchange tubes 10 at the two ends of the three heat exchange tubes 10 are first heat exchange tubes 102, and the heat exchange tube 10 in the middle may have the same structure as the first heat exchange tube 102, or may have a different structure from the first heat exchange tube 102.

[0213] In other embodiments, multiple heat exchange tubes 10 are arranged in a coiled arrangement. For example, as shown in FIG14 , a heat exchange element 100 includes two heat exchange tubes 10 arranged in parallel, the two heat exchange tubes 10 being coiled around each other. Furthermore, both heat exchange tubes 10 can be formed into first heat exchange tubes 102. As shown in FIG15 , a heat exchange element 100 includes three heat exchange tubes 10 arranged in parallel, the three heat exchange tubes 10 being coiled around each other, and the three heat exchange tubes 10 can be formed into first heat exchange tubes 102.

[0214] The plurality of heat exchange tubes 10 are arranged in parallel, that is, the inlets of the plurality of heat exchange tubes 10 are connected to the same liquid supply pipe, and the outlets of the plurality of heat exchange tubes 10 are connected to the same liquid outlet pipe.

[0215] In the above embodiment, by providing the heat exchange element 100 with one or more heat exchange tubes 10, and the multiple heat exchange tubes 10 are arranged at intervals along the second direction Y or arranged around each other, the diversity of the heat exchange tubes 10 can be increased, thereby improving the adaptability of the heat exchange element 100, so that it can meet the needs of different batteries 1000, thereby improving the market competitiveness of the battery 1000; at the same time, the multiple heat exchange tubes 10 are arranged in parallel, so that the multiple heat exchange tubes 10 can exchange heat at the same time, thereby reducing the heat exchange time of the heat exchange element 100 and improving the heat exchange efficiency.

[0216] According to some embodiments of the present application, as shown in FIG14 , the plurality of heat exchange tubes 10 include a first heat exchange tube 102 and a second heat exchange tube 103. The second heat exchange tube 103 has the same structure as the first heat exchange tube 102, and the second heat exchange tube 103 is bent and disposed within the U-shaped region 50 of the first heat exchange tube 102. In the above embodiment, by providing a plurality of heat exchange tubes 10, the diversity of the heat exchange tubes 10 can be increased, so that the arrangement of the heat exchange tubes 10 can be designed according to the cooling requirements of the battery 1000, thereby further increasing the heat exchange effect of the heat exchange element 100 and improving the temperature uniformity of the battery 1000.

[0217] According to some embodiments of the present application, as shown in Figure 15, the second heat exchange tube 103 includes a U-shaped area 50 with the same structure as the first heat exchange tube 102, and at least part of the first heat exchange channel 51 of the first heat exchange tube 102 is arranged in the U-shaped area 50 of the second heat exchange tube 103.

[0218] It is understandable that only part of the first heat exchange channel 51 of the first heat exchange tube 102 may be arranged in the U-shaped area 50 of the second heat exchange tube 103 , or the entire first heat exchange channel 51 may be arranged in the U-shaped area 50 of the second heat exchange tube 103 .

[0219] For example, as shown in FIG. 15 , the plurality of heat exchange tubes 10 include a first heat exchange tube 102 and two second heat exchange tubes 103 . The two second heat exchange tubes 103 have the same structure as the first heat exchange tube 102 .

[0220] In the above embodiment, by setting the second heat exchange tube 103 to include a U-shaped area 50 with the same structure as the first heat exchange tube 102, at least part of the first heat exchange channel 51 of the first heat exchange tube 102 is arranged in the U-shaped area 50 of the second heat exchange tube 103, so that at least part of the first heat exchange tube 102 and the second heat exchange tube 103 can be arranged around each other. In this way, the winding method of the heat exchange channel can be arranged according to the heat exchange requirements of various parts of the battery assembly 200, further increasing the heat exchange effect of the heat exchange tube 10 and improving the temperature uniformity of the battery 1000.

[0221] As shown in Figures 13 to 15 , the battery 1000 according to an embodiment of the present application includes the heat exchange tube 10 according to an embodiment of the present application. Thus, by using the heat exchange tube 10, the temperature control performance of the battery 1000 can be improved.

[0222] In some embodiments, as shown in Figures 16 and 17, the battery 1000 further includes a housing assembly 300 and a battery assembly 200. The housing assembly 300 includes an integrally stamped housing body 310, which includes a bottom wall 311 and a surrounding wall 312. The battery assembly 200 is disposed within the housing body 310, and the battery assembly 200 includes a plurality of battery cells 210. For example, the housing body 310 can be formed from sheet metal and stamped into a basin shape to include the bottom wall 311 and the surrounding wall 312. As a result, since the bottom wall 311 and the surrounding wall 312 of the housing body 310 are integrally stamped, the connection between the bottom wall 311 and the surrounding wall 312 does not need to be sealed, thereby improving the sealing effect. This prevents muddy water from seeping into the housing body 310 from the connection between the bottom wall 311 and the surrounding wall 312 and affecting the battery assembly 200, thereby improving the reliability of the battery 1000. Furthermore, the integrally stamped housing body 310 does not require splicing, which can improve production efficiency. The battery cells 210 may generate heat during operation, or may need to be heated in a low-temperature environment to maintain a suitable temperature range. Heat exchange tubes 10 can be provided to regulate the temperature of the battery cells 210, thereby improving the stability of the battery cells 210 and the battery life of the battery 1000.

[0223] In some embodiments of the present application, as shown in Figures 16-18, the battery 1000 includes a thermostat, which includes at least one of a first thermostat 110, a second thermostat 120, and a third thermostat 130. At least one of the first thermostat 110, the second thermostat 120, and the third thermostat 130 includes a heat exchange tube 10. The first thermostat 110 is disposed outside the box body 310 and is in contact with the outer wall of the box body 310. The second thermostat 120 is disposed within the box assembly 300 and is located between the battery assembly 200 and the box assembly 300. The third thermostat 130 is disposed within the box assembly 300 and is located between two adjacent battery cells 210.

[0224] For example, the battery 1000 may include only one of the first thermostat 110, the second thermostat 120, and the third thermostat 130; may include two of the first thermostat 110, the second thermostat 120, and the third thermostat 130; or may include all three of the first thermostat 110, the second thermostat 120, and the third thermostat 130. Thus, appropriate locations for the thermostats can be selected based on actual conditions to meet the temperature regulation requirements of the battery 1000.

[0225] The specific location of the first thermostat 110 outside the box body 310 is not limited. For example, with reference to FIG16 , at least a portion of the first thermostat 110 can be located below the bottom wall 311 of the box body 310, thereby enabling heat exchange with the battery assembly 200 over a wider range and improving the temperature control effect on the battery assembly 200. For another example, at least a portion of the first thermostat 110 can also be located outside the surrounding wall 312 of the box body 310.

[0226] Exemplarily, as shown in Figure 16, the box assembly 300 may also include a bottom guard plate 340 located below the bottom wall 311 of the box body 310 to protect the box body 310 from bumps and other factors. At this time, if a first temperature control component 110 is provided below the bottom wall 311 of the box body 310, the first temperature control component 110 may be located between the bottom guard plate 340 and the bottom wall 311 of the box body 310, so that the bottom guard plate 340 can also protect the first temperature control component 110.

[0227] The specific location of the second thermostat 120 within the box assembly 300 is not limited. For example, with reference to FIG16 , at least a portion of the second thermostat 120 can be located above the bottom wall 311 of the box body 310, so as to be sandwiched between the bottom wall 311 of the box body 310 and the bottom of the battery assembly 200. This allows for a wider range of heat exchange with the battery assembly 200, thereby improving the temperature control effect on the battery assembly 200. For another example, at least a portion of the second thermostat 120 can be located below the box cover 320, so as to be sandwiched between the box cover 320 and the top of the battery assembly 200. This allows for a wider range of heat exchange with the battery assembly 200, thereby improving the temperature control effect on the battery assembly 200.

[0228] The specific setting position of the third temperature regulating component 130 in the box assembly 300 is not limited. For example, in combination with Figure 17, the adjacent battery cells 210 in the battery assembly 200 can be arranged with their large surfaces facing each other. The third temperature regulating component 130 is set between the large surfaces of the adjacent battery cells 210, which can improve the temperature regulating effect of the battery cells 210.

[0229] Exemplarily, in conjunction with Figure 16, the temperature regulating element may be a flat tube structure, that is, the temperature regulating element is formed in the form of a flat tube with a width greater than the thickness. A flow channel may be formed in the flat tube, and a heat exchange liquid may be introduced into the flow channel to exchange heat with the battery assembly 200 to achieve a temperature regulating effect on the battery 1000.

[0230] Typically, heat exchange tubes used in batteries utilize a double-layer brazed plate structure, consisting of two brazed layers of sheet material, with a heat exchange channel formed between the two layers. In this application, by way of example, the flat tubes can be constructed by splicing together multiple extruded tube segments. The thickness of the flat tubes can be significantly smaller than that of the double-layer brazed plate structure, thereby occupying a smaller space and increasing the capacity of the battery 1000.

[0231] In addition, the thermal management system of the battery 1000 is not limited to including only the above-mentioned temperature control components. For example, in some embodiments, in combination with Figure 18, the box assembly 300 may also include an expansion beam 330 arranged in the box body 310. For example, there may be multiple expansion beams 330, and the battery assembly 200 is clamped between the multiple expansion beams 330. For example, it may include a first expansion beam 330 and a second expansion beam 330. The battery assembly 200 is clamped between the first expansion beam 330 and the second expansion beam 330. A heat exchange flow channel may be set in the expansion beam 330 for temperature control, thereby constituting a part of the thermal management system.

[0232] As shown in Figure 1, an electrical device according to an embodiment of the present application includes a battery 1000 according to an embodiment of the present application. The electrical device can be any of the aforementioned devices or systems that utilize the battery 1000. The improved performance of the battery 1000 can improve the operating performance of the electrical device.

[0233] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0234] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A heat exchange tube, wherein: include: Multiple heat exchange sections, each of which is formed separately and connected in sequence; Wherein, each of the heat exchange sections includes a bent section and a straight section, and the two straight sections of any two adjacent heat exchange sections are connected by a overlapping structure, and the overlapping structure includes a first plug-in part and a second plug-in part, and the first plug-in part is inserted into the second plug-in part and connected to the second plug-in part.

2. The heat exchange tube according to claim 1, wherein: In the two straight sections connected by the overlapping structure, the end of one of the straight sections is formed as the first plug-in portion, and the end of the other straight section is formed as the second plug-in portion.

3. The heat exchange tube according to claim 2, wherein: The inner circumferential surface of the first plug-in portion is coplanar with the inner circumferential surface of the connected heat exchange section, and the second plug-in portion is formed as a flared section and the inner circumferential surface size of the second plug-in portion is larger than the inner circumferential surface size of the connected heat exchange section; or, the first plug-in portion is formed as a narrowed section and the outer circumferential surface size of the first plug-in portion is smaller than the outer circumferential surface size of the connected heat exchange section, and the outer circumferential surface of the second plug-in portion is coplanar with the outer circumferential surface of the connected heat exchange section.

4. The heat exchange tube according to claim 1, wherein: It also includes a connecting joint, the two ends of which are respectively connected to the ends of the two straight sections of the two adjacent heat exchange sections through the overlapping structure, wherein one of the end of the connecting joint and the end of the straight section is formed as the first plug-in part, and the other is formed as the second plug-in part.

5. The heat exchange tube according to claim 4, wherein: In the overlapping structure connecting the straight section and the connecting joint, the first plug-in portion is formed as a narrowing section and / or the second plug-in portion is formed as a flaring section; or, The outer circumference of one of the straight section and the connecting joint is coplanar with the outer circumference of the connected first plug-in portion, and the inner circumference of the other is coplanar with the inner circumference of the connected second plug-in portion.

6. The heat exchange tube according to any one of claims 1 to 5, wherein: The outer circumferential surface of the first plug-in portion is connected to the inner circumferential surface of the second plug-in portion.

7. The heat exchange tube according to any one of claims 1 to 6, wherein: The first plug-in portion and the second plug-in portion are connected by welding.

8. The heat exchange tube according to any one of claims 1 to 7, wherein: Each of the heat exchange sections is integrally formed from a single tube; and / or the heat exchange tubes are flat tubes.

9. The heat exchange tube according to any one of claims 1 to 8, wherein: The heat exchange section includes one bending section and two straight sections, and the two straight sections are respectively connected to two ends of the bending section.

10. The heat exchange tube according to claim 9, wherein: The two straight sections of the heat exchange section extend along the first direction and are arranged along the second direction. The first direction and the second direction are set at an angle. Among the two connected heat exchange sections, one straight section of one heat exchange section is opposite to and connected to one straight section of the other heat exchange section along the first direction.

11. The heat exchange tube according to claim 9 or 10, wherein: The lengths of the two straight sections at both ends of the splicing path are greater than the length of the middle straight section. The two straight sections are parallel to each other and respectively have the inlet and outlet of the heat exchange tube. The inlet and the outlet are located at the same end of the two straight sections in the length direction.

12. The heat exchange tube according to any one of claims 1 to 8, wherein: The heat exchange tube includes a plurality of straight sections and at least one bent section connected in sequence, the straight sections extend along a first direction and the plurality of straight sections are arranged at intervals along a second direction, the first direction and the second direction are set at an angle, and the at least one bent section connects and connects the plurality of straight sections in sequence.

13. The heat exchange tube according to claim 12, wherein: The bending section includes an arc section and an inclined section, the inclined section connects the arc section and one of the two adjacent straight sections, and the inclined section is away from the arc section along the first direction and inclined toward the other of the two adjacent straight sections.

14. The heat exchange tube according to claim 13, wherein: The bending section includes an arc section and an inclined section, one end of the inclined section is connected to one end of the arc section, and the other end of the inclined section and the other end of the arc section are respectively connected to two adjacent straight sections; or, The bending section includes one arc section and two inclined sections, and the two inclined sections respectively connect the two ends of the arc section and the two adjacent straight sections.

15. The heat exchange tube according to any one of claims 12 to 14, wherein: The bending diameter of the inner edge of the bending section is D, and the width of the straight section along the second direction is L, wherein, The distance between the two straight sections of the same heat exchange section in the second direction is 60%D to 70%D; and / or, The two straight sections of the heat exchange section are a first straight section and a second straight section. In two adjacent heat exchange sections, the first straight section of one heat exchange section and the second straight section of the other heat exchange section are opposite to each other along the first direction and are connected by the overlapping structure. The second straight section of one heat exchange section and the first straight section of the other heat exchange section are respectively located on both sides of the overlapping structure in the second direction. The distance between the first straight section and the second straight section located on both sides of the overlapping structure is 60%(2D+L)~70%(2D+L).

16. The heat exchange tube according to any one of claims 1 to 15, wherein: The heat exchange tube includes a first heat exchange tube, the first heat exchange tube includes a first heat exchange channel and a second heat exchange channel, the second heat exchange channel is bent to form a U-shaped area, the first heat exchange channel is bent and arranged in the U-shaped area, and is bent and connected to the second heat exchange channel.

17. The heat exchange tube according to claim 16, wherein: The first heat exchange channel includes a plurality of first heat exchange parts, which are arranged at intervals and are bent and connected in sequence.

18. The heat exchange tube according to claim 16 or 17, wherein: The second heat exchange channel includes: a second heat exchange part, a third heat exchange part and a fourth heat exchange part. The second heat exchange part extends along the first side circumference of the first heat exchange channel. The third heat exchange part is connected between the second heat exchange part and the first heat exchange channel and extends along the second side circumference of the first heat exchange channel. The first end of the third heat exchange part is connected to the second heat exchange part at an angle and the second end is connected to the first heat exchange channel at an angle. The fourth heat exchange part is communicated with the second heat exchange part, connected to the second heat exchange part at an angle, and extends along the third side circumference of the first heat exchange channel.

19. The heat exchange tube according to claim 18, wherein: The first heat exchange tube further includes a third heat exchange channel. The first heat exchange channel is connected between the third heat exchange channel and the second heat exchange channel, and the third heat exchange channel is connected to the first heat exchange channel at an angle.

20. The heat exchange tube according to claim 19, wherein: The first heat exchange channel includes a plurality of first heat exchange parts, and the plurality of first heat exchange parts are bent and connected in sequence in the second direction. The third heat exchange channel is arranged on the side of the first heat exchange channel away from the third heat exchange part. The third heat exchange channel is connected to the one of the plurality of first heat exchange parts that is closest to the second heat exchange part along the second direction. The third heat exchange channel extends along the second direction toward a direction away from the second heat exchange part. The first heat exchange part extends along the first direction, and the first direction is set at an angle to the second direction.

21. A battery, wherein: The heat exchange tube comprises at least one heat exchange tube according to any one of claims 1 to 20.

22. The battery according to claim 21, wherein The heat exchange tubes include a plurality of heat exchange tubes, which are arranged at intervals along the second direction or arranged around each other. At least one heat exchange tube is a first heat exchange tube, which includes a first heat exchange channel and a second heat exchange channel. The second heat exchange channel is bent to form a U-shaped area. The first heat exchange channel is bent in the U-shaped area and is connected to the second heat exchange channel. The plurality of heat exchange tubes are arranged in parallel.

23. The battery according to claim 21 or 22, wherein Also includes: A box assembly and a battery assembly, wherein the box assembly includes a box body formed by integral stamping, the box body includes a bottom wall and a surrounding wall, the battery assembly is arranged in the box body, and the battery assembly includes a plurality of battery cells.

24. The battery according to claim 23, wherein The battery includes a thermostat, the thermostat includes at least one of a first thermostat, a second thermostat, and a third thermostat, at least one of the first thermostat, the second thermostat, and the third thermostat includes the heat exchange tube, wherein: The first temperature regulating component is arranged outside the box body and is in contact with the outer wall of the box body; The second temperature regulating component is provided in the box assembly and is located between the battery assembly and the box assembly; The third temperature regulating component is arranged in the box assembly and is located between two adjacent battery cells.

25. An electrical device, wherein: Comprising a battery according to any one of claims 21-24.

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