Battery and electrical device

Abstract

Provided in the present application are a battery and an electrical device. The battery comprises a battery module and a heat exchange assembly, wherein the battery module comprises a plurality of battery cells; and the heat exchange assembly comprises a first current collector, a second current collector and a plurality of heat exchange tubes, the first current collector and the second current collector being located on two sides of the plurality of battery cells in a first direction, and the plurality of heat exchange tubes being connected between the first current collector and the second current collector, at least two heat exchange tubes being arranged on the outer periphery of each battery cell, a recess being provided on the outer side of the heat exchange tube, and the recess accommodating a portion of the battery cell.

Description

Batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420371112.7, filed on February 28, 2024, entitled “Battery and Electrical Device,” the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and power tools.

[0005] Batteries typically incorporate heat exchange components to exchange heat between battery cells. The efficiency of heat exchange significantly impacts reliable battery operation. Therefore, effectively improving heat exchange efficiency is a pressing issue in battery technology.

[0006] Summary of the Invention

[0007] In view of the above problems, the present application provides a battery and an electrical device that can improve the heat exchange efficiency, reliability and energy density of the battery.

[0008] In a first aspect, an embodiment of the present application provides a battery, which includes a battery module and a heat exchange assembly, the battery module includes a plurality of battery cells, the heat exchange assembly includes a first current collector, a second current collector and a plurality of heat exchange tubes, the first current collector and the second current collector are respectively located on both sides of the plurality of battery cells along a first direction, the plurality of heat exchange tubes are connected between the first current collector and the second current collector, at least two heat exchange tubes are arranged on the periphery of each battery cell, and a recess is provided on the outer side of the heat exchange tube, which accommodates a portion of the battery cell.

[0009] On the one hand, the recessed portion on the outside of the heat exchange tube can accommodate a portion of the battery cell. This not only increases the effective contact area between the heat exchange tube and the battery cell, thereby improving the overall heat exchange efficiency of the battery and the stability of the battery cell, thereby improving battery reliability; it also improves the tightness between the heat exchange tube and the battery cell, thereby increasing the space utilization of the heat exchange assembly, thereby improving the battery's energy density. On the other hand, the first and second current collectors can also respectively exchange heat with both sides of the battery cell along the first direction, further improving the battery's heat exchange efficiency. In this way, the above technical solution can improve the battery's heat exchange efficiency, reliability, and energy density.

[0010] In some embodiments of the first aspect, at least two heat exchange tubes disposed on the periphery of each battery cell are connected to each other.

[0011] The above technical solution connects a plurality of heat exchange tubes to each other to improve the overall structural strength of the heat exchange assembly, thereby further improving the stability of the battery cell.

[0012] In some embodiments of the first aspect, the battery further comprises a housing, wherein the plurality of battery cells are housed in the housing, wherein the housing has an inlet and an outlet, wherein the first current collector is connected to the inlet, the second current collector is connected to the outlet, and the first current collector is located at the bottom of the battery cells.

[0013] The heat exchange medium of the above technical solution needs to overcome gravity when flowing in the heat exchange tube, so that the flow speed of the heat exchange medium is low, thereby enabling sufficient heat exchange between the heat exchange medium and the battery cell to improve the utilization efficiency of the heat exchange medium.

[0014] In some embodiments of the first aspect, the outlet includes a first outlet and a second outlet, the first outlet is connected to the first current collector, and the second outlet is connected to the second current collector.

[0015] The above technical solution partially diverts the heat exchange medium in the first fluid collector by providing the first outlet to reduce the overall temperature of the heat exchange medium in the first fluid collector, thereby further improving the heat exchange effect of the heat exchange assembly.

[0016] In some embodiments of the first aspect, the box includes a frame, one end of the frame is provided with an opening, and the first current collector covers the opening.

[0017] The first current collector of the above technical solution can not only serve as a part of the heat exchange component to transmit the heat exchange medium, but also serve as a part of the box to form a storage space for accommodating battery cells together with the frame, thereby reducing the overall structural complexity of the battery and helping to reduce battery costs.

[0018] In some embodiments of the first aspect, there are multiple battery modules, and the multiple battery modules are arranged in the box at intervals.

[0019] In the case where the battery includes multiple battery modules, the multiple battery modules can share one first current collector to further reduce the overall structural complexity of the battery.

[0020] In some embodiments of the first aspect, the first current collector is provided with a plurality of first joints, the second current collector is provided with a plurality of second joints, and the heat exchange tube further includes a first nozzle and a second nozzle opposite to each other along a first direction, the first joint being plugged into the first nozzle, and the second joint being plugged into the second nozzle.

[0021] On the one hand, the above technical solution can improve the connection firmness between the first fluid collector and the heat exchange tube, as well as the connection firmness between the second fluid collector and the heat exchange tube, thereby improving the reliability of the heat exchange component; on the other hand, the first joint and the first nozzle, as well as the second joint and the second nozzle in the above technical solution also have a certain positioning function, which can improve the assembly efficiency of the heat exchange component.

[0022] In some embodiments of the first aspect, the heat exchange assembly further includes a seal, which is connected between the first joint and the first nozzle, and / or the seal is connected between the second joint and the second nozzle, thereby reducing the risk of leakage of the heat exchange medium and further improving the reliability of the battery.

[0023] In some embodiments of the first aspect, there are multiple sealing members, and the multiple sealing members are spaced apart along the first direction, which can further improve the sealing performance of the heat exchange assembly.

[0024] In some embodiments of the first aspect, the heat exchange tube includes a bent wall, which is bent toward the inside of the heat exchange tube to form a recessed portion on the outside of the heat exchange tube.

[0025] By bending the entire bending wall toward the inside of the heat exchange tube to form a recess on the outside of the heat exchange tube, on the one hand, the difficulty of the preparation process can be reduced, thereby helping to reduce costs; on the other hand, the smoothness of the overall structure of the heat exchange tube can be improved, thereby helping to improve the appearance quality of the heat exchange tube.

[0026] In some embodiments of the first aspect, there are multiple bent walls, and the multiple bent walls are sequentially connected along the circumference of the heat exchange tube to form a channel, and the channel is connected to the first current collector and the second current collector.

[0027] The above technical solution increases the number of bent walls of the heat exchange tube, so that one heat exchange tube can simultaneously exchange heat for multiple battery cells, which can further improve the space utilization of the heat exchange tube, thereby facilitating further improvement of the energy density of the battery.

[0028] In some embodiments of the first aspect, the heat exchange tube further includes a separator connected to an inner wall of the channel and dividing the channel into a plurality of sub-channels, wherein the plurality of sub-channels are spaced apart along the circumference of the heat exchange tube.

[0029] The heat exchange medium in the above technical solution needs to overcome greater resistance when flowing in multiple sub-channels, so that the flow speed of the heat exchange medium is lower, so that the heat exchange medium can fully exchange heat with the battery cells to improve the utilization efficiency of the heat exchange medium.

[0030] In some embodiments of the first aspect, the multiple sub-channels correspond to the multiple bent walls one-to-one, which can further improve the heat exchange efficiency of the heat exchange tube.

[0031] In some embodiments of the first aspect, the partition and the bending wall are an integrally formed structure.

[0032] On the one hand, there is no need to connect the separator and the bending wall through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the separator and the bending wall through an additional connection process, the integral structure of the separator and the bending wall has a higher connection strength.

[0033] In some embodiments of the first aspect, the battery module further includes a restraining component, which is sleeved and connected to the side portions of the plurality of battery cells in a direction perpendicular to the first direction, and applies a pre-tightening force to the plurality of battery cells in a direction perpendicular to the first direction to improve the stability of the battery module.

[0034] In some embodiments of the first aspect, the battery module further includes a sampling assembly, the sampling assembly including a bracket and a current collector, the second current collector being connected to a side of the bracket proximate to the battery cells, and the current collector being disposed on a side of the bracket facing away from the battery cells. The bracket includes through-holes, through which electrode terminals of the battery cells pass to connect to the current collector.

[0035] The above technical solution can reduce the risk of interference of the heat exchange medium flow between the second current collector and the heat exchange tube on the sampling assembly by connecting the second current collector to the side of the bracket close to the battery cell, and can further improve the reliability of the battery.

[0036] In some embodiments of the first aspect, at least a portion of the second current collector is embedded within the support.

[0037] The space occupancy of the second current collector can be reduced, thereby further improving the energy density of the battery.

[0038] In some embodiments of the first aspect, the battery cell is a cylindrical battery cell.

[0039] In a second aspect, the present application provides an electrical device, which includes a battery provided by any embodiment of the first aspect, and the battery is used to provide electrical energy.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0042] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0043] FIG2 is a schematic diagram of a three-dimensional structure of a battery provided in some embodiments of the present application;

[0044] FIG3 is a schematic diagram of the three-dimensional structure of a battery module of a battery provided in some embodiments of the present application;

[0045] FIG4 is a schematic structural diagram of the battery module shown in FIG3 in a first direction;

[0046] FIG5 is a schematic diagram of a partial three-dimensional structure of a battery box provided in some embodiments of the present application;

[0047] FIG6 is a schematic structural diagram of the box shown in FIG5 in the first direction;

[0048] FIG7 is a schematic cross-sectional view of the structure along AA in FIG6 ;

[0049] FIG8 is a schematic diagram of the three-dimensional structure of a second current collector of a battery provided in some embodiments of the present application;

[0050] FIG9 is a schematic diagram of a three-dimensional structure of a plurality of heat exchange tubes of a battery provided by some embodiments of the present application;

[0051] FIG10 is a schematic diagram of the three-dimensional structure of a heat exchange tube of a battery provided in some embodiments of the present application;

[0052] FIG11 is a schematic front view of a heat exchange tube of a battery provided in some embodiments of the present application;

[0053] FIG12 is a schematic cross-sectional view of the structure along line BB of FIG11;

[0054] FIG13 is a schematic cross-sectional view of the structure along CC in FIG11;

[0055] FIG14 is a schematic cross-sectional view of a first connector of a battery provided in some embodiments of the present application;

[0056] FIG15 is a schematic diagram of a three-dimensional structure of a second current collector of a battery and a sampling assembly provided in some embodiments of the present application.

[0057] The accompanying drawings in the specific implementation manner are as follows:

[0058] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor;

[0059] 10. Battery module; 11. Battery cell; 12. Restraining component; 13. Sampling assembly; 131. Bracket; 1311. Through hole; 132. Current collector; 21. First current collector; 211. First joint; 22. Second current collector; 221. Second joint; 23. Heat exchange tube; 231. Recess; 232. First nozzle; 233. Second nozzle; 234. Bend wall; 235. Channel; 2351. Sub-channel; 236. Partition; 30. Box; 31. Inlet; 32. Outlet; 321. First outlet; 322. Second outlet; 33. Frame; 40. Sealing member; X, first direction. DETAILED DESCRIPTION

[0060] 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 and completely described below in conjunction with the accompanying 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.

[0061] 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 only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] The term "plurality" used in this application refers to two or more (including two).

[0067] In this application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "vertical" also includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0068] In this application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, and the embodiments of this application are not limited thereto. Battery cells may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of this application are not limited thereto.

[0069] The battery mentioned in the embodiments of the present application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in hybrid through a busbar.

[0070] In some embodiments, the battery may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0071] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are housed in the case.

[0072] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0073] In some embodiments, the battery may be an energy storage device, including an energy storage container, an energy storage cabinet, and the like.

[0074] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and power tools.

[0075] Batteries typically incorporate heat exchange components to exchange heat between battery cells. The efficiency of heat exchange has a significant impact on reliable battery operation. Currently, heat exchange plates are typically used to exchange heat between battery cells. However, the effective contact area between the heat exchange plates and the battery cells is small, resulting in low space utilization. This results in low overall heat exchange efficiency for the battery, impacting its reliability.

[0076] Based on the above considerations, the present application designs a battery, which includes a battery module and a heat exchange assembly. The battery module includes multiple battery cells. The heat exchange assembly includes a first current collector, a second current collector and multiple heat exchange tubes. The first current collector and the second current collector are respectively located on both sides of the multiple battery cells along a first direction. The multiple heat exchange tubes are connected between the first current collector and the second current collector. At least two heat exchange tubes are arranged on the periphery of each battery cell. A recess is provided on the outer side of the heat exchange tube, and the recess accommodates a part of the battery cell.

[0077] On the one hand, the recessed portion on the outside of the heat exchange tube can accommodate a portion of the battery cell. This not only increases the effective contact area between the heat exchange tube and the battery cell, thereby improving the overall heat exchange efficiency of the battery and the stability of the battery cell, thereby improving battery reliability; it also improves the tightness between the heat exchange tube and the battery cell, thereby increasing the space utilization of the heat exchange assembly, thereby improving the battery's energy density. On the other hand, the first and second current collectors can also respectively exchange heat with both sides of the battery cell along the first direction, further improving the battery's heat exchange efficiency. In this way, the above technical solution can improve the battery's heat exchange efficiency, reliability, and energy density.

[0078] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0079] Electrical devices include, but are not limited to, vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools. Vehicles include, but are not limited to, gasoline-powered vehicles, gas-powered vehicles, or new energy vehicles; new energy vehicles include, but are not limited to, pure electric vehicles, hybrid vehicles, or extended-range vehicles; spacecraft include, but are not limited to, airplanes, rockets, space shuttles, and spacecraft; electric toys include, but are not limited to, fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; and electric tools include, but are not limited to, metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0080] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including battery boxes and electrical equipment using batteries. However, for the sake of simplicity, the following embodiments are explained using electric vehicles as an example.

[0081] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application.

[0082] 1 , a battery 2 is provided inside the vehicle 1 , and the battery 2 may be provided at the bottom, head, or tail of the vehicle 1 . The battery 2 may be used to power the vehicle 1 , for example, the battery 2 may serve as an operating power source for the vehicle 1 .

[0083] The vehicle 1 may further include a controller 3 and a motor 4 . The controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of the vehicle 1 during startup, navigation, and driving.

[0084] In some embodiments of the present application, the battery 2 can not only serve as the operating power source of the vehicle 1, but also serve as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0085] Figure 2 is a schematic diagram of the three-dimensional structure of a battery provided in some embodiments of the present application. Figure 3 is a schematic diagram of the three-dimensional structure of a battery module provided in some embodiments of the present application. Figure 4 is a schematic diagram of the structure of the battery module shown in Figure 3 in the first direction. Figure 5 is a schematic diagram of the partial three-dimensional structure of a battery casing provided in some embodiments of the present application. Figure 6 is a schematic diagram of the structure of the casing shown in Figure 5 in the first direction. Figure 7 is a schematic diagram of the cross-sectional structure along line AA of Figure 6. Figure 8 is a schematic diagram of the three-dimensional structure of a second current collector provided in some embodiments of the present application. Figure 9 is a schematic diagram of the three-dimensional structure of a plurality of heat exchange tubes coordinated in a battery provided in some embodiments of the present application. Figure 10 is a schematic diagram of the three-dimensional structure of a heat exchange tube provided in some embodiments of the present application. Figure 11 is a schematic diagram of the front view of the heat exchange tube provided in some embodiments of the present application. Figure 12 is a schematic diagram of the cross-sectional structure along line BB of Figure 11. Figure 13 is a schematic diagram of the cross-sectional structure along line CC of Figure 11.

[0086] Continuing with reference to Figures 2 to 13, an embodiment of the present application provides a battery 2, which includes a battery module 10 and a heat exchange assembly. The battery module 10 includes multiple battery cells 11, and the heat exchange assembly includes a first current collector 21, a second current collector 22 and multiple heat exchange tubes 23. The first current collector 21 and the second current collector 22 are respectively located on both sides of the multiple battery cells 11 along the first direction X. The multiple heat exchange tubes 23 are connected between the first current collector 21 and the second current collector 22. At least two heat exchange tubes 23 are arranged on the periphery of each battery cell 11, and a recess 231 is provided on the outer side of the heat exchange tube 23. The recess 231 accommodates a portion of the battery cell 11.

[0087] For example, the battery cell 11 may be, but is not limited to, a cylindrical battery cell or a square battery cell. To more clearly illustrate the embodiments of the present application, the battery cell 11 is described below as a cylindrical battery cell.

[0088] The multiple battery cells 11 can 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 11. The multiple battery cells 11 in the battery module 10 can be directly connected in series, in parallel, or in a hybrid connection. Alternatively, they can be electrically connected via a busbar to achieve parallel, series, or hybrid connection of the multiple battery cells 11 in the battery module 10.

[0089] The heat exchange tubes 23 can be detachably connected between the first and second current collectors 21, 22, or can be integrally provided on the first and second current collectors 21, 22. The heat exchange tubes 23 can be directly connected to the first and second current collectors 21, 22, or can be restricted to the first and second current collectors 21, 22 by other components. As an example, the connection method between the heat exchange tubes 23 and the first and second current collectors 21 and the connection method between the heat exchange tubes 23 and the second current collectors 22 can be, but are not limited to, bolt connection, welding, riveting, clamping, or bonding. The heat exchange medium can enter the multiple heat exchange tubes 23 through the first current collector 21 and flow out of the multiple heat exchange tubes 23 through the second current collector 22. The heat exchange medium can also enter the multiple heat exchange tubes 23 through the second current collector 22 and flow out of the multiple heat exchange tubes 23 through the first current collector 21.

[0090] Optionally, the heat exchange tube 23 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0091] Optionally, both the first current collector 21 and the second current collector 22 may be, but are not limited to, plate-shaped structures or pipe-shaped structures. The first current collector 21 and the second current collector 22 may be, but are not limited to, made of metal or non-metallic materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, and the non-metallic material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide.

[0092] As an example, the heat exchange tube 23, the first current collector 21 and the second current collector 22 can be made of the same material to simplify the preparation process and help reduce costs.

[0093] At least two heat exchange tubes 23 are disposed around the periphery of each battery cell 11. The number of heat exchange tubes 23 disposed around the periphery of each battery cell 11 may be two, three, four, or more.

[0094] For example, the recess 231 can be formed by a depression in the outer surface of the heat exchange tube 23 or by an inward bend in the wall of the heat exchange tube 23. The shape of the recess 231 matches the shape of the outer surface of the battery cell 11 to maximize the effective contact area between the heat exchange tube 23 and the battery cell 11.

[0095] On the one hand, the recessed portion 231 on the outer side of the heat exchange tube 23 can accommodate a portion of the battery cell 11. This not only increases the effective contact area between the heat exchange tube 23 and the battery cell 11, thereby improving the overall heat exchange efficiency of the battery 2 and the stability of the battery cell 11, thereby improving the reliability of the battery 2; it also improves the tightness between the heat exchange tube 23 and the battery cell 11, thereby increasing the space utilization of the heat exchange assembly, thereby improving the energy density of the battery 2. On the other hand, the first current collector 21 and the second current collector 22 can also respectively exchange heat with both sides of the battery cell 11 along the first direction X, thereby further improving the heat exchange efficiency of the battery 2. In this way, the above technical solution can improve the heat exchange efficiency, reliability, and energy density of the battery 2.

[0096] In some embodiments, at least two heat exchange tubes 23 disposed on the periphery of each battery cell 11 are connected to each other.

[0097] For example, two adjacent heat exchange tubes 23 of the at least two heat exchange tubes 23 disposed on the periphery of each battery cell 11 may be detachably connected or fixedly connected; two adjacent heat exchange tubes 23 may be directly connected or indirectly connected via other components. By way of example, the connection between two adjacent heat exchange tubes 23 may be, but is not limited to, bolting, welding, riveting, clamping, or bonding. As a specific example, two adjacent heat exchange tubes 23 of the at least two heat exchange tubes 23 disposed on the periphery of each battery cell 11 may abut against each other and be welded together.

[0098] The above technical solution connects the multiple heat exchange tubes 23 to each other to improve the overall structural strength of the heat exchange assembly, thereby further improving the stability of the battery cell 11.

[0099] In some embodiments, the battery 2 further includes a housing 30 , which houses the plurality of battery cells 11 . The housing 30 defines an inlet 31 and an outlet 32 ​​. The first current collector 21 is connected to the inlet 31 , and the second current collector 22 is connected to the outlet 32 ​​. The first current collector 21 is located at the bottom of the battery cells 11 .

[0100] Exemplarily, the housing 30 is used to house the battery cells 11. An inlet 31 and an outlet 32 ​​are defined in the housing 30 to facilitate connection between the heat exchange assembly and related components outside the battery 2. The heat exchange medium flows into the first current collector 21 through the inlet 31 and initially spreads through the first current collector 21 until it fills the first current collector 21. The heat exchange medium then gradually flows into the multiple heat exchange tubes 23. The heat exchange medium in the multiple heat exchange tubes 23 then converges into the second current collector 22 before finally flowing out through the outlet 32.

[0101] The heat exchange medium of the above technical solution needs to overcome gravity when flowing in the heat exchange tube 23, so that the flow speed of the heat exchange medium is low, thereby enabling sufficient heat exchange between the heat exchange medium and the battery cell 11 to improve the utilization efficiency of the heat exchange medium.

[0102] In some embodiments, the outlet 32 ​​includes a first outlet 321 and a second outlet 322 . The first outlet 321 is connected to the first current collector 21 , and the second outlet 322 is connected to the second current collector 22 .

[0103] For example, the heat exchange medium flows into the first fluid collector 21 through the inlet 31, and will first spread in the first fluid collector 21 until the heat exchange medium fills the first fluid collector 21. Then, a part of the heat exchange medium is gradually diverted into multiple heat exchange tubes 23, and another part of the heat exchange medium flows out of the first fluid collector 21 through the first outlet 321. The heat exchange medium located in the multiple heat exchange tubes 23 is then gathered in the second fluid collector 22, and finally flows out through the outlet 32.

[0104] It is understood that the heat exchange medium within the first current collector 21 exchanges heat with the bottom of the battery cells 11, resulting in a higher temperature for the heat exchange medium within the first current collector 21 relative to the temperature of the heat exchange medium at the inlet 31. After a portion of the relatively high-temperature heat exchange medium flows out of the first current collector 21 through the first outlet 321, the lower-temperature heat exchange medium continuously enters the first current collector 21 through the inlet 31, lowering the overall temperature of the heat exchange medium within the first current collector 21. This in turn lowers the temperature of the heat exchange medium entering the multiple heat exchange tubes 23, thereby improving the heat exchange efficiency of the heat exchange tubes 23 over a large area of ​​the battery cells 11.

[0105] Thus, the above technical solution partially diverts the heat exchange medium in the first fluid collector 21 by setting the first outlet 321 to reduce the overall temperature of the heat exchange medium in the first fluid collector 21, thereby further improving the heat exchange effect of the heat exchange assembly.

[0106] In some embodiments, the housing 30 includes a frame 33 , one end of the frame 33 is provided with an opening, and the first current collector 21 covers the opening.

[0107] For example, the first current collector 21 may be connected to the frame 33 to close an opening at one end of the frame 33. The first current collector 21 and the frame 33 together form a storage space for accommodating the battery cell 11. The first current collector 21 may be detachably connected to the frame 33 or fixedly connected to the frame 33. The first current collector 21 may be directly connected to the frame 33 or constrained to the frame 33 by other components. As an example, the connection method between the first current collector 21 and the frame 33 may be, but is not limited to, bolting, welding, riveting, clamping, or bonding.

[0108] Optionally, the frame 33 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, and the non-metallic material can be polyethylene, polypropylene, polyvinyl chloride or wood.

[0109] The first current collector 21 of the above technical solution can not only serve as a part of the heat exchange component to transmit the heat exchange medium, but also serve as a part of the box body 30 to form a storage space for accommodating the battery cell 11 together with the frame body 33, thereby reducing the overall structural complexity of the battery 2 and helping to reduce the cost of the battery 2.

[0110] In some embodiments, there are multiple battery modules 10 , and the multiple battery modules 10 are arranged in the box 30 at intervals.

[0111] For example, the number of battery modules 10 may be, but is not limited to, two, three, four, or more. When the battery 2 includes multiple battery modules 10 , the multiple battery modules 10 may share one first current collector 21 to further reduce the overall structural complexity of the battery 2 .

[0112] Optionally, each battery module 10 in the plurality of battery modules 10 may correspond to a second current collector 22 , or may share a second current collector 22 .

[0113] In some embodiments, the first current collector 21 is provided with a plurality of first joints 211, and the second current collector 22 is provided with a plurality of second joints 221. The heat exchange tube 23 further includes a first nozzle 232 and a second nozzle 233 that are opposite to each other along the first direction X. The first joint 211 is plugged into the first nozzle 232, and the second joint 221 is plugged into the second nozzle 233.

[0114] For example, the first joint 211 is plugged into the first nozzle 232, and the first joint 211 can be inserted into the first nozzle 232, or the first nozzle 232 can be inserted into the first joint 211; the second joint 221 is plugged into the second nozzle 233, and the second joint 221 can be inserted into the second nozzle 233, or the second nozzle 233 can be inserted into the second joint 221.

[0115] The first joint 211 can be detachably connected to the first current collector 21 or fixedly connected to the first current collector 21. The first joint 211 can be directly connected to the first current collector 21 or can be restricted to the first current collector 21 by other components. As an example, the connection method between the first joint 211 and the first current collector 21 can be, but is not limited to, bolt connection, welding, riveting, clamping, or bonding.

[0116] The second joint 221 can be detachably connected to the second current collector 22 or fixedly connected to the second current collector 22. The second joint 221 can be directly connected to the second current collector 22 or be restricted to the second current collector 22 by other components. As an example, the connection method between the second joint 221 and the second current collector 22 can be, but is not limited to, bolt connection, welding, riveting, clamping, or bonding.

[0117] Optionally, the first connector 211 and the first current collector 21 are integrally formed. This eliminates the need for an additional connection process to connect the first connector 211 and the first current collector 21, simplifying the manufacturing process. Furthermore, compared to connecting the first connector 211 and the first current collector 21 through an additional connection process, the integral structure provides a stronger connection between the first connector 211 and the first current collector 21.

[0118] Optionally, the second connector 221 and the second current collector 22 are integrally formed. This eliminates the need for an additional connection process to connect the second connector 221 and the second current collector 22, simplifying the manufacturing process. Furthermore, compared to connecting the second connector 221 and the second current collector 22 through an additional connection process, the integral structure provides a stronger connection between the second connector 221 and the second current collector 22.

[0119] Optionally, the first connector 211 and the second connector 221 can be made of, but are not limited to, metal or non-metal materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0120] Exemplarily, the first nozzle 232 and the second nozzle 233 can both be openings opened on the tube wall of the heat exchange tube 23 and connected to the interior of the heat exchange tube 23, and the first nozzle 232 and the second nozzle 233 can also both be tube structures protruding from the tube wall of the heat exchange tube 23 and connected to the interior of the heat exchange tube 23.

[0121] As an example, the first nozzle 232 and the second nozzle 233 are both tubular structures that protrude from the wall of the heat exchange tube 23. The first nozzle 232 and the second nozzle 233 can be detachably connected to the heat exchange tube 23 or fixedly connected to the heat exchange tube 23. The first nozzle 232 and the second nozzle 233 can be directly connected to the heat exchange tube 23 or secured to the heat exchange tube 23 via other components. As an example, the connection between the first nozzle 232 and the heat exchange tube 23 and the connection between the second nozzle 233 and the heat exchange tube 23 can be, but are not limited to, bolting, welding, riveting, clamping, or bonding.

[0122] On the one hand, the above technical solution can improve the connection firmness between the first collector 21 and the heat exchange tube 23, as well as the connection firmness between the second collector 22 and the heat exchange tube 23, thereby improving the reliability of the heat exchange component; on the other hand, the first joint 211 and the first nozzle 232, as well as the second joint 221 and the second nozzle 233 in the above technical solution also have a certain positioning function, which can improve the assembly efficiency of the heat exchange component.

[0123] FIG14 is a schematic cross-sectional view of a first connector 211 of a battery 2 provided in some embodiments of the present application.

[0124] Continuing to refer to FIG. 14 , in some embodiments, the heat exchange assembly further includes a seal 40 , which is connected between the first joint 211 and the first nozzle 232 .

[0125] For example, the seal 40 may be provided on the first joint 211, the first nozzle 232, or both. After the first joint 211 and the first nozzle 232 are plugged together, the seal 40 is connected between the first joint 211 and the first nozzle 232 to seal the gap between the first joint 211 and the first nozzle 232.

[0126] As an example, the seal 40 is disposed on the first joint 211. The seal 40 can be detachably connected to the first joint 211 or fixedly connected to the first joint 211. The seal 40 can be directly connected to the first joint 211 or restrained to the first joint 211 by other components. As an example, the connection between the seal 40 and the first joint 211 and the connection between the second nozzle 233 and the heat exchange tube 23 can be, but are not limited to, bolting, welding, riveting, clamping, or bonding.

[0127] Optionally, the sealing member 40 may be, but is not limited to, a sealant, a sealing ring, or a sealing gasket, etc. As an example, the sealing member 40 may be, but is not limited to, made of rubber, polyurethane, silicone rubber, plastic (e.g., polyethylene, polypropylene, etc.), metal (e.g., copper, aluminum, stainless steel, etc.), cellulose board, or a composite material (e.g., a combination of rubber and metal).

[0128] The above technical solution can reduce the risk of heat exchange medium leakage by providing a seal 40 between the first joint 211 and the first nozzle 232 , thereby further improving the reliability of the battery 2 .

[0129] In some optional embodiments, a first groove is provided on the first joint 211, and the first groove is recessed relative to the outer wall surface of the first joint 211. Part of the seal 40 is accommodated in the first groove, which can limit the seal 40 to reduce the risk of the seal 40 falling out.

[0130] A second groove is provided on the first nozzle 232 , which is recessed relative to the inner wall surface of the first nozzle 232 . Part of the seal 40 is accommodated in the second groove, which can further limit the seal 40 to further reduce the risk of the seal 40 falling out.

[0131] In some optional embodiments, a seal 40 is connected between the second joint 221 and the second nozzle 233 to reduce the risk of heat exchange medium leakage, thereby further improving the reliability of the battery 2. The specific configuration details of the seal 40, the second joint 221, and the second nozzle 233 can be found in the above description of the configuration between the seal 40, the first joint 211, and the first nozzle 232, and are not repeated here.

[0132] In some optional embodiments, a third groove is provided on the second joint 221, and the third groove is recessed relative to the outer wall surface of the second joint 221. Part of the seal 40 is accommodated in the third groove, which can limit the seal 40 to reduce the risk of the seal 40 falling out.

[0133] A fourth groove is provided on the second nozzle 233, which is recessed relative to the inner wall surface of the second nozzle 233. Part of the seal 40 is accommodated in the fourth groove, which can further limit the seal 40 to further reduce the risk of the seal 40 falling out.

[0134] In some embodiments, there are multiple sealing members 40 , and the multiple sealing members 40 are spaced apart along the first direction X, which can further improve the sealing performance of the heat exchange assembly.

[0135] For example, the number of the sealing members 40 may be, but is not limited to, two, three or more.

[0136] In some embodiments, the heat exchange tube 23 includes a bent wall 234 , which is bent toward the inside of the heat exchange tube 23 to form a recessed portion 231 on the outside of the heat exchange tube 23 .

[0137] By bending the bending wall 234 as a whole toward the inside of the heat exchange tube 23, a recess 231 is formed on the outside of the heat exchange tube 23. On the one hand, the difficulty of the preparation process can be reduced, thereby helping to reduce costs; on the other hand, the smoothness of the overall structure of the heat exchange tube 23 can be improved, thereby helping to improve the appearance quality of the heat exchange tube 23.

[0138] In some embodiments, there are multiple curved walls 234, which are sequentially connected along the circumference of the heat exchange tube 23 to form a channel 235. The channel 235 is connected to the first current collector 21 and the second current collector 22. The heat exchange medium flows in the channel 235 and exchanges heat with the battery cell 11 through the curved walls 234.

[0139] For example, the number of the bent walls 234 may be, but is not limited to, two, three, four, or more, and each bent wall 234 on each heat exchange tube 23 corresponds to a battery cell 11. As an example, when there are four bent walls 234, the four bent walls 234 of a heat exchange tube 23 are respectively provided to correspond to four battery cells 11. In other words, four heat exchange tubes 23 are provided around the outer periphery of a battery cell 11.

[0140] The above technical solution increases the number of bent walls 234 of the heat exchange tube 23 so that one heat exchange tube 23 can simultaneously exchange heat for multiple battery cells 11, which can further improve the space utilization of the heat exchange tube 23 and thus help further improve the energy density of the battery 2.

[0141] In some embodiments, the heat exchange tube 23 further includes a separator 236 , which is connected to the inner wall of the channel 235 and divides the channel 235 into a plurality of sub-channels 2351 . The plurality of sub-channels 2351 are arranged at intervals along the circumference of the heat exchange tube 23 .

[0142] Illustratively, when the heat exchange medium enters the heat exchange tube 23, the separator 236 diverts the heat exchange medium so that the heat exchange medium flows into multiple sub-channels 2351. The separator 236 can be detachably connected to the curved wall 234 or fixedly connected to the curved wall 234. The separator 236 can be directly connected to the curved wall 234 or be restrained to the curved wall 234 by other components. By way of example, the connection between the separator 236 and the curved wall 234 can be, but is not limited to, bolting, welding, riveting, clamping, or bonding.

[0143] Optionally, the separator 236 can be but is not limited to being made of metal or non-metallic materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metallic material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0144] It can be understood that after the partition 236 divides the channel 235 into multiple sub-channels 2351, the sum of the surface areas of the multiple sub-channels 2351 is greater than the surface area of ​​the channel 235, thereby increasing the total contact area between the heat exchange medium and the heat exchange tube 23, and the heat exchange medium encounters greater resistance during the flow in the heat exchange tube 23.

[0145] In this way, the heat exchange medium in the above technical solution needs to overcome greater resistance when flowing in multiple sub-channels 2351, so that the flow speed of the heat exchange medium is lower, so that the heat exchange medium can fully exchange heat with the battery cell 11 to improve the utilization efficiency of the heat exchange medium.

[0146] In some embodiments, the multiple sub-channels 2351 correspond one-to-one to the multiple bent walls 234 , which can further improve the heat exchange efficiency of the heat exchange tube 23 .

[0147] Illustratively, the number of sub-channels 2351 matches the number of bent walls 234. For example, if there are four bent walls 234, there are also four sub-channels 2351, with one sub-channel 2351 corresponding to one bent wall 234. Optionally, the partition 236 and the bent wall 234 enclose a sub-channel 2351.

[0148] In some embodiments, the partition 236 and the bending wall 234 are an integrally formed structure.

[0149] On the one hand, there is no need to use an additional connection process to connect the separator 236 and the bent wall 234, which simplifies the manufacturing process. At the same time, compared with connecting the separator 236 and the bent wall 234 through an additional connection process, the integral structure of the separator 236 and the bent wall 234 has a higher connection strength.

[0150] Continuing to refer to Figure 3, in some embodiments, the battery module 10 also includes a restraining component 12, which is sleeved and connected to the side portions of the multiple battery cells 11 along a direction perpendicular to the first direction X, and applies a pre-tightening force to the multiple battery cells 11 along a direction perpendicular to the first direction X.

[0151] For example, the restraining member 12 can be made of an elastic and insulating material, such as rubber, silicone rubber, polyethylene, polyurethane, polyvinyl chloride, or rubber foam. The restraining member 12 can be mounted on the multiple battery cells 11 and provide a preload force to the multiple battery cells 11 to improve the stability of the battery module 10.

[0152] Optionally, the restraining member 12 comprises an annular elastic band that is attached to the sides of the multiple battery cells 11 along a direction perpendicular to the first direction X. The elastic bands are connected end to end to form an annular structure. The elastic band has high deformability, effectively wrapping the multiple battery cells 11 and providing a more comprehensive preload force to the multiple battery cells 11. Furthermore, the annular elastic band is simple in structure, low in production cost, and offers good economic benefits.

[0153] FIG15 is a schematic diagram of a three-dimensional structure of the second current collector 22 of a battery 2 and the sampling assembly 13 provided in some embodiments of the present application.

[0154] Continuing with reference to FIG15 , in some embodiments, the battery module 10 further includes a sampling assembly 13, which includes a bracket 131 and a current collector 132. The second current collector 22 is connected to a side of the bracket 131 close to the battery cell 11, and the current collector 132 is disposed on a side of the bracket 131 facing away from the battery cell 11. The bracket 131 defines through-holes 1311, through which the electrode terminals of the battery cell 11 pass to connect to the current collector 132.

[0155] For example, the sampling assembly 13 may further include components such as a current sensor, a voltage sensor, a temperature sensor, or a communication component, disposed on the side of the bracket 131 facing away from the battery cell 11, to achieve functional diversification. The bracket 131 is used to provide a support for the busbar 132 and the above-mentioned components such as the current sensor, voltage sensor, temperature sensor, or communication component. The busbar 132 is used to connect multiple battery cells 11 in the battery module 10 in parallel, series, or mixed.

[0156] The second current collector 22 can be detachably connected to the bracket 131 or fixedly connected to the bracket 131. The second current collector 22 can be directly connected to the bracket 131 or be restrained on the bracket 131 by other components. As an example, the connection between the second current collector 22 and the bracket 131 can be, but is not limited to, bolt connection, welding, riveting, clamping, or bonding.

[0157] The above technical solution can reduce the risk of interference of the heat exchange medium flow between the second current collector 22 and the heat exchange tube 23 on the sampling assembly 13 by connecting the second current collector 22 to the side of the bracket 131 close to the battery cell 11, and can further improve the reliability of the battery 2.

[0158] In some embodiments, at least a portion of the second current collector 22 is embedded in the bracket 131 , which can reduce the space occupied by the second current collector 22 , thereby further improving the energy density of the battery 2 .

[0159] In some optional embodiments, the second current collector 22 and the bracket 131 are integrally formed. This simplifies the manufacturing process by eliminating the need for an additional connection process. Furthermore, compared to connecting the second current collector 22 and the bracket 131 through an additional connection process, the integral structure provides a stronger connection between the second current collector 22 and the bracket 131.

[0160] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 2 of any of the above solutions, where the battery 2 is solely used to provide electrical energy.

[0161] In order to better understand the battery 2 provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned battery 2 in actual application is provided here for illustration.

[0162] An embodiment of the present application provides a battery 2, which includes a housing 30, multiple battery modules 10, and a heat exchange assembly. The multiple battery modules 10 are spaced apart within the housing 30. The housing 30 is provided with an inlet 31 and an outlet 32. The housing 30 includes a frame 33, one end of which is provided with an opening. The battery module 10 includes multiple battery cells 11, a restraining component 12, and a sampling assembly 13. The restraining component 12 is sleeved and connected to the side portions of the multiple battery cells 11 in a direction perpendicular to a first direction X, and applies a pre-tightening force to the multiple battery cells 11 in a direction perpendicular to the first direction X.

[0163] The heat exchange assembly includes a first current collector 21, a second current collector 22, multiple heat exchange tubes 23, and a seal 40. The first current collector 21 and the second current collector 22 are respectively located on both sides of the multiple battery cells 11 along the first direction X. The first current collector 21 is connected to the inlet 31, and the second current collector 22 is connected to the outlet 32. The first current collector 21 covers the opening and is located at the bottom of the battery cell 11. The outlet 32 ​​includes a first outlet 321 and a second outlet 322. The first outlet 321 is connected to the first current collector 21, and the second outlet 322 is connected to the second current collector 22.

[0164] The first current collector 21 is provided with a plurality of first joints 211, and the second current collector 22 is provided with a plurality of second joints 221. The heat exchange tubes 23 also include a first nozzle 232 and a second nozzle 233 that are opposed to each other along the first direction X. The first joints 211 are plugged into the first nozzles 232, and the second joints 221 are plugged into the second nozzles 233. A seal 40 is connected between the first joints 211 and the first nozzles 232, and between the second joints 221 and the second nozzles 233.

[0165] Multiple heat exchange tubes 23 connect the first current collector 21 and the second current collector 22. At least two heat exchange tubes 23 are arranged around the periphery of each battery cell 11. Each heat exchange tube 23 includes multiple curved walls 234 and separators 236. The curved walls 234 are sequentially connected along the circumference of the heat exchange tube 23 to form a channel 235, which connects the first current collector 21 and the second current collector 22. The curved walls 234 bend inwardly of the heat exchange tube 23 to form a recessed portion 231 on the outside of the heat exchange tube 23, which accommodates a portion of the battery cell 11. Separators 236 are connected to the inner wall of the channel 235 and, together with the curved walls 234, form a sub-channel 2351.

[0166] The sampling assembly 13 includes a bracket 131 and a current collector 132. The second current collector 22 is connected to the side of the bracket 131 closest to the battery cell 11, and the current collector 132 is located on the side of the bracket 131 facing away from the battery cell 11. The bracket 131 has through-holes 1311, through which the electrode terminals of the battery cell 11 pass to connect to the current collector 132.

[0167] 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.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery comprising: A battery module, comprising a plurality of battery cells; The heat exchange assembly includes a first current collector, a second current collector and a plurality of heat exchange tubes. The first current collector and the second current collector are respectively located on both sides of the plurality of battery cells along a first direction. The plurality of heat exchange tubes are connected between the first current collector and the second current collector. At least two heat exchange tubes are arranged on the periphery of each battery cell. A recess is provided on the outer side of the heat exchange tube, and the recess accommodates a portion of the battery cell.

2. The battery according to claim 1, wherein The at least two heat exchange tubes arranged on the outer periphery of each battery cell are connected to each other.

3. The battery according to claim 1 or 2, wherein The battery further includes a box, wherein the plurality of battery cells are accommodated in the box; The box body is provided with an inlet and an outlet. The first current collector is connected to the inlet, the second current collector is connected to the outlet, and the first current collector is located at the bottom of the battery cell.

4. The battery according to claim 3, wherein The outlet includes a first outlet and a second outlet, the first outlet is connected to the first current collector, and the second outlet is connected to the second current collector.

5. The battery according to claim 3, wherein The box includes a frame, one end of the frame is provided with an opening, and the first current collector covers the opening.

6. The battery according to claim 5, wherein There are multiple battery modules, and the multiple battery modules are arranged in the box at intervals.

7. The battery according to any one of claims 1 to 6, wherein: The first current collector is provided with a plurality of first joints, and the second current collector is provided with a plurality of second joints; The heat exchange tube further includes a first nozzle and a second nozzle opposite to each other along the first direction, the first joint is plugged into the first nozzle, and the second joint is plugged into the second nozzle.

8. The battery according to claim 7, wherein The heat exchange assembly further includes a seal connected between the first joint and the first nozzle, and / or, The sealing member is connected between the second joint and the second nozzle.

9. The battery according to claim 8, wherein There are multiple sealing members, and the multiple sealing members are arranged at intervals along the first direction.

10. The battery according to any one of claims 1 to 9, wherein The heat exchange tube includes a bent wall, and the bent wall is bent toward the inside of the heat exchange tube to form the recessed portion on the outside of the heat exchange tube.

11. The battery according to claim 10, wherein There are multiple bent walls, and the multiple bent walls are sequentially connected along the circumference of the heat exchange tube to form a channel, and the channel is connected to the first current collector and the second current collector.

12. The battery according to claim 11, wherein The heat exchange tube further includes a separator connected to the inner wall of the channel and dividing the channel into a plurality of sub-channels. The plurality of sub-channels are arranged at intervals along the circumference of the heat exchange tube.

13. The battery according to claim 12, wherein The plurality of sub-channels correspond one-to-one to the plurality of bending walls.

14. The battery according to claim 12, wherein The partition and the bending wall are an integrally formed structure.

15. The battery according to any one of claims 1 to 14, wherein The battery module further includes a restraining member, which is sleeved and connected to the sides of the plurality of battery cells in a direction perpendicular to the first direction and applies a pre-tightening force to the plurality of battery cells in a direction perpendicular to the first direction.

16. The battery according to any one of claims 1 to 15, wherein: The battery module further includes a sampling assembly, the sampling assembly including a bracket and a current collector, the second current collector is connected to a side of the bracket close to the battery cell, and the current collector is provided on a side of the bracket facing away from the battery cell; The bracket is provided with a through hole, and the electrode terminal of the battery cell passes through the through hole and is connected to the busbar.

17. The battery according to claim 16, wherein At least a portion of the second current collector is embedded in the bracket.

18. The battery according to any one of claims 1 to 17, wherein The battery cell is a cylindrical battery cell.

19. An electrical device comprising the battery according to any one of claims 1 to 18, wherein the battery is used to provide electrical energy.

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