Battery and electric device

Abstract

The utility model provides a battery and an electric device. The battery comprises a battery module and a heat exchange assembly, the battery module comprises a plurality of single batteries, 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 are located on the two sides of the single batteries in the first direction respectively, and the heat exchange tubes are communicated between the first current collector and the second current collector; at least two heat exchange tubes are arranged on the periphery of each battery monomer, a concave part is arranged on the outer side of each heat exchange tube, and one part of each battery monomer is accommodated in each concave part. According to the invention, the heat exchange efficiency, reliability and energy density of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In batteries, heat exchange components are usually provided to exchange heat between battery cells. The heat exchange efficiency of batteries has an important impact on the reliable operation of batteries. Therefore, how to effectively improve the heat exchange efficiency of batteries is an urgent problem to be solved in battery technology. Utility Model Content

[0004] 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.

[0005] In a first aspect, an embodiment of the present application provides a battery, comprising 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, wherein 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, and the plurality of heat exchange tubes are connected between the first current collector and the second current collector, and 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, and the recess accommodates a portion of the battery cell.

[0006] On the one hand, the concave portion on the outside of the heat exchange tube can accommodate a part of the battery cell, which can not only increase the effective contact area between the heat exchange tube and the battery cell to improve the overall heat exchange efficiency of the battery and the stability of the battery cell, thereby improving the reliability of the battery; it can also improve the tightness between the heat exchange tube and the battery cell to improve the space utilization of the heat exchange component, thereby helping to improve the energy density of the battery. On the other hand, the first current collector and the second current collector can also perform heat exchange on both sides of the battery cell along the first direction respectively, thereby further improving the heat exchange efficiency of the battery. In this way, the above technical solution can improve the heat exchange efficiency, reliability and energy density of the battery.

[0007] 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.

[0008] 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.

[0009] In some embodiments of the first aspect, the battery further comprises a box body, wherein the plurality of battery cells are accommodated in the box body, wherein the box body is provided with an inlet and an outlet, wherein the first current collector is connected to the inlet, and the second current collector is connected to the outlet, and wherein the first current collector is located at the bottom of the battery cell.

[0010] 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, so that the heat exchange medium and the battery cell can fully exchange heat to improve the utilization efficiency of the heat exchange medium.

[0011] 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.

[0012] The above technical solution provides a first outlet to partially divert the heat exchange medium in the first current collector to reduce the overall temperature of the heat exchange medium in the first current collector, thereby further improving the heat exchange effect of the heat exchange component.

[0013] 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.

[0014] The first current collector of the above technical solution can not only serve as a part of the heat exchange component to transfer 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.

[0015] In some embodiments of the first aspect, there are multiple battery modules, and the multiple battery modules are arranged in the box at intervals.

[0016] In the case where the battery includes a plurality of battery modules, the plurality of battery modules may share a first current collector to further reduce the overall structural complexity of the battery.

[0017] In some embodiments of the first aspect, a plurality of first joints are provided on the first current collector, a plurality of second joints are provided on the second current collector, and the heat exchange tube further comprises a first nozzle and a second nozzle opposite to each other in a first direction, the first joint is plugged into the first nozzle, and the second joint is plugged into the second nozzle.

[0018] On the one hand, the above technical scheme 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 scheme also have a certain positioning function, which can improve the assembly efficiency of the heat exchange component.

[0019] In some embodiments of the first aspect, the heat exchange assembly also 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, which can reduce the risk of leakage of the heat exchange medium, thereby further improving the reliability of the battery.

[0020] In some embodiments of the first aspect, there are multiple seals, and the multiple seals are spaced apart along the first direction, which can further improve the sealing performance of the heat exchange assembly.

[0021] In some embodiments of the first aspect, the heat exchange tube includes a bent wall, and the bent wall is bent toward the inside of the heat exchange tube to form a recessed portion on the outside of the heat exchange tube.

[0022] 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.

[0023] 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.

[0024] 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 improving the energy density of the battery.

[0025] In some embodiments of the first aspect, the heat exchange tube further includes a partition, which is connected to an inner wall of the channel and divides the channel into a plurality of sub-channels, and the plurality of sub-channels are spaced apart along the circumference of the heat exchange tube.

[0026] 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 and the battery cell can fully exchange heat to improve the utilization efficiency of the heat exchange medium.

[0027] In some embodiments of the first aspect, the multiple sub-channels correspond to the multiple bent walls one by one, which can further improve the heat exchange efficiency of the heat exchange tube.

[0028] In some embodiments of the first aspect, the partition and the bending wall are an integrally formed structure.

[0029] 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 separator and the bending wall in an integrated structure have a higher connection firmness.

[0030] In some embodiments of the first aspect, the battery module also includes a binding component, which is sleeved and connected to the sides of the multiple battery cells along a direction perpendicular to the first direction, and applies a pre-tightening force to the multiple battery cells along a direction perpendicular to the first direction to improve the stability of the battery module.

[0031] In some embodiments of the first aspect, the battery module further comprises a sampling assembly, the sampling assembly comprises a bracket and a current collector, the second current collector is connected to a side of the bracket close to the battery cell, the current collector is arranged on a side of the bracket facing away from the battery cell, a through hole is provided on the bracket, and an electrode terminal of the battery cell is connected to the current collector through the through hole.

[0032] 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.

[0033] In some embodiments of the first aspect, at least a portion of the second current collector is embedded within the support.

[0034] The space occupancy rate of the second current collector can be reduced, thereby further improving the energy density of the battery.

[0035] In some embodiments of the first aspect, the battery cell is a cylindrical battery cell.

[0036] 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.

[0037] 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

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0039] Figure 1A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of a three-dimensional structure of a battery provided in some embodiments of the present application;

[0041] Figure 3 A schematic diagram of a three-dimensional structure of a battery module of a battery provided in some embodiments of the present application;

[0042] Figure 4 for Figure 3 The schematic structural diagram of the battery module shown in the first direction;

[0043] Figure 5 A schematic diagram of a partial three-dimensional structure of a battery box provided in some embodiments of the present application;

[0044] Figure 6 for Figure 5 The structural schematic diagram of the box body shown in the first direction;

[0045] Figure 7 for Figure 6 Schematic diagram of the cross-section structure along AA;

[0046] Figure 8 A schematic diagram of the three-dimensional structure of a second current collector of a battery provided in some embodiments of the present application;

[0047] Fig. 9 A schematic diagram of a three-dimensional structure of a plurality of heat exchange tubes of a battery provided in some embodiments of the present application;

[0048] Fig.10 A schematic diagram of a three-dimensional structure of a heat exchange tube of a battery provided in some embodiments of the present application;

[0049] Fig.11 A schematic diagram of the front view structure of a heat exchange tube of a battery provided in some embodiments of the present application;

[0050] Fig.12 for Fig.11 Schematic diagram of the cross-section structure along BB;

[0051] Fig.13 for Fig.11 Schematic diagram of the cross-section structure along CC;

[0052] Fig.14 A schematic cross-sectional structure diagram of a first connector of a battery provided in some embodiments of the present application;

[0053] Fig.15 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.

[0054] The reference numerals in the specific implementation manner are as follows:

[0055] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor;

[0056] 10. Battery module; 11. Battery cell; 12. Binding 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

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field 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", "second", etc. 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 and secondary relationship.

[0059] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0062] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0063] The term "plurality" used in the present application refers to two or more (including two).

[0064] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0065] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0066] 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 mixed connection through a busbar component.

[0067] 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.

[0068] 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 accommodated in the case.

[0069] 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.

[0070] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0071] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0072] In batteries, heat exchange components are usually provided to exchange heat between battery cells. The heat exchange efficiency of batteries has an important impact on the reliable operation of batteries. At present, heat exchange plates are usually used to exchange heat between battery cells. However, the effective contact area between the heat exchange plates and battery cells is small, and the space utilization rate is low, which leads to low overall heat exchange efficiency of the battery, affecting the reliability of the battery.

[0073] 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 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.

[0074] On the one hand, the concave portion on the outside of the heat exchange tube can accommodate a part of the battery cell, which can not only increase the effective contact area between the heat exchange tube and the battery cell to improve the overall heat exchange efficiency of the battery and the stability of the battery cell, thereby improving the reliability of the battery; it can also improve the tightness between the heat exchange tube and the battery cell to improve the space utilization of the heat exchange component, thereby helping to improve the energy density of the battery. On the other hand, the first current collector and the second current collector can also perform heat exchange on both sides of the battery cell along the first direction respectively, thereby further improving the heat exchange efficiency of the battery. In this way, the above technical solution can improve the heat exchange efficiency, reliability and energy density of the battery.

[0075] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0076] Electrical devices may be, but are not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be, but are not limited to, fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be, but are not limited to, pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc.; spacecraft include, but are not limited to, airplanes, rockets, space shuttles, and spacecraft, etc.; 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, etc.; electric tools include, but are not limited to, metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0077] 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 described using electric vehicles as examples.

[0078] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0079] Continue to refer Figure 1 The vehicle 1 is provided with a battery 2 inside, and the battery 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery 2 can be used for powering the vehicle 1, for example, the battery 2 can be used as an operating power source for the vehicle 1.

[0080] The vehicle 1 may further include a controller 3 and a motor 4 , wherein 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 starting, navigating, and driving the vehicle 1 .

[0081] In some embodiments of the present application, the battery 2 can not only serve as an operating power source for the vehicle 1, but also serve 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.

[0082] Figure 2 A schematic diagram of a three-dimensional structure of a battery provided in some embodiments of the present application, Figure 3 A schematic diagram of a three-dimensional structure of a battery module of a battery provided in some embodiments of the present application. Figure 4 for Figure 3 The schematic diagram of the structure of the battery module shown in the first direction, Figure 5 This is a partial three-dimensional structural diagram of a battery box provided in some embodiments of the present application. Figure 6 for Figure 5 The schematic diagram of the structure of the box in the first direction is shown. Figure 7 for Figure 6 Schematic diagram of the cross-section structure along AA, Figure 8 This 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. Fig. 9 A schematic diagram of a three-dimensional structure of multiple heat exchange tubes of a battery provided in some embodiments of the present application. Fig.10 A schematic diagram of a three-dimensional structure of a heat exchange tube of a battery provided in some embodiments of the present application. Fig.11 This is a schematic diagram of the front view structure of a heat exchange tube of a battery provided in some embodiments of the present application. Fig.12 for Fig.11 Schematic diagram of the cross-section structure along BB, Fig.13 for Fig.11 Schematic diagram of the cross-sectional structure along CC.

[0083] Continue to refer Figures 2 to 13 The 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 a plurality of battery cells 11. The heat exchange assembly includes a first current collector 21, a second current collector 22 and a plurality of heat exchange tubes 23. The first current collector 21 and the second current collector 22 are respectively located on both sides of the plurality of battery cells 11 along a first direction X. The plurality of 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. A recess 231 is arranged on the outer side of the heat exchange tube 23. The recess 231 accommodates a portion of the battery cell 11.

[0084] Exemplarily, 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.

[0085] Multiple battery cells 11 can be connected in series, in parallel, or in hybrid connection. Hybrid connection means that multiple battery cells 11 are connected in series and in parallel. Multiple battery cells 11 in a battery module 10 can be directly connected in series, in parallel, or in hybrid connection, or can be electrically connected through a busbar to achieve parallel, series, or hybrid connection of multiple battery cells 11 in the battery module 10.

[0086] The heat exchange tube 23 can be detachably connected between the first current collector 21 and the second current collector 22, or can be integrally arranged on the first current collector 21 and the second current collector 22. The heat exchange tube 23 can be directly connected to the first current collector 21 and the second current collector 22, or can be restricted on the first current collector 21 and the second current collector 22 by other components. As an example, the connection method between the heat exchange tube 23 and the first current collector 21 and the connection method between the heat exchange tube 23 and the second current collector 22 can be but not limited to bolt connection, welding, riveting, clamping or bonding, etc. Among them, 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.

[0087] 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.

[0088] Optionally, the first current collector 21 and the second current collector 22 may be, but are not limited to, a plate-shaped structure or a pipe-shaped structure, etc. The first current collector 21 and the second current collector 22 may be, but are not limited to, made of metal or non-metal materials, for example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0089] As an example, the heat exchange tube 23, the first current collector 21 and the second current collector 22 may be made of the same material to simplify the preparation process and help reduce costs.

[0090] 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.

[0091] For example, the recess 231 may be formed by a depression on the outer surface of the heat exchange tube 23, or may be formed by an inward bending of the tube wall of the heat exchange tube 23. The structural shape of the recess 231 is adapted to the structural 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.

[0092] On the one hand, the concave portion 231 on the outer side of the heat exchange tube 23 can accommodate a part of the battery cell 11, which can not only increase the effective contact area between the heat exchange tube 23 and the battery cell 11, so as to improve the overall heat exchange efficiency of the battery 2 and the stability of the battery cell 11, thereby helping to improve the reliability of the battery 2; it can also improve the tightness between the heat exchange tube 23 and the battery cell 11, so as to improve the space utilization of the heat exchange component, thereby helping to improve the energy density of the battery 2. On the other hand, the first current collector 21 and the second current collector 22 can also perform heat exchange on both sides of the battery cell 11 along the first direction X, respectively, so as to further improve 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.

[0093] In some embodiments, at least two heat exchange tubes 23 disposed on the periphery of each battery cell 11 are connected to each other.

[0094] Exemplarily, two adjacent heat exchange tubes 23 of 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 through other components. As an example, the connection method between two adjacent heat exchange tubes 23 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding. As a specific example, two adjacent heat exchange tubes 23 of at least two heat exchange tubes 23 disposed on the periphery of each battery cell 11 abut against each other and are welded together.

[0095] The above technical solution connects a plurality of 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 .

[0096] In some embodiments, the battery 2 further includes a box 30, and a plurality of battery cells 11 are accommodated in the box 30. The box 30 is provided with an inlet 31 and an outlet 32, the first current collector 21 is connected to the inlet 31, the second current collector 22 is connected to the outlet 32, and the first current collector 21 is located at the bottom of the battery cell 11.

[0097] Exemplarily, the box 30 is used to accommodate the battery cell 11, and an inlet 31 and an outlet 32 ​​are provided on the box 30, which is conducive to the connection between the heat exchange assembly and the relevant components outside the battery 2. The heat exchange medium flows into the first current collector 21 through the inlet 31, and will first spread in the first current collector 21 until the heat exchange medium fills the first current collector 21, and then the heat exchange medium is gradually divided into multiple heat exchange tubes 23, and the heat exchange medium in the multiple heat exchange tubes 23 is then collected in the second current collector 22, and finally flows out through the outlet 32.

[0098] 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 relatively low, 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.

[0099] 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 .

[0100] Illustratively, 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 portion of the heat exchange medium is gradually diverted into multiple heat exchange tubes 23, and another portion of the heat exchange medium flows out of the first fluid collector 21 through the first outlet 321. The heat exchange medium in the multiple heat exchange tubes 23 is then gathered in the second fluid collector 22, and finally flows out through the outlet 32.

[0101] It is understandable that the heat exchange medium in the first current collector 21 will exchange heat with the bottom of the battery cell 11, resulting in a higher temperature of the heat exchange medium in the first current collector 21 than the temperature of the heat exchange medium at the inlet 31. After a portion of the heat exchange medium with a relatively high temperature flows out of the first current collector 21 through the first outlet 321, the heat exchange medium with a lower temperature will continuously enter the first current collector 21 through the inlet 31, so that the overall temperature of the heat exchange medium in the first current collector 21 is reduced, and then the temperature of the heat exchange medium entering the multiple heat exchange tubes 23 is lower, so as to improve the heat exchange effect of the heat exchange tubes 23 on the large surface area of ​​the battery cell 11.

[0102] Thus, the above technical solution partially diverts the heat exchange medium in the first current collector 21 by setting the first outlet 321 to reduce the overall temperature of the heat exchange medium in the first current collector 21, thereby further improving the heat exchange effect of the heat exchange assembly.

[0103] 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.

[0104] For example, the first current collector 21 may be connected to the frame 33 to close one end opening of the frame 33, and the first current collector 21 and the frame 33 together form a receiving space for receiving the battery cell 11. The first current collector 21 may be detachably connected to the frame 33, or may be fixedly connected to the frame 33, wherein the first current collector 21 may be directly connected to the frame 33, or may be restricted 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, bolt connection, welding, riveting, clamping or bonding, etc.

[0105] 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, etc.

[0106] 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.

[0107] In some embodiments, there are multiple battery modules 10 , and the multiple battery modules 10 are arranged in the box body 30 at intervals.

[0108] 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 a first current collector 21 to further reduce the overall structural complexity of the battery 2 .

[0109] 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 .

[0110] In some embodiments, a plurality of first joints 211 are provided on the first current collector 21, and a plurality of second joints 221 are provided on the second current collector 22. The heat exchange tube 23 further includes a first nozzle 232 and a second nozzle 233 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.

[0111] Exemplarily, 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.

[0112] The first joint 211 may be detachably connected to the first current collector 21, or may be fixedly connected to the first current collector 21, wherein the first joint 211 may be directly connected to the first current collector 21, or may be restricted on 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 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0113] The second joint 221 may be detachably connected to the second current collector 22, or may be fixedly connected to the second current collector 22, wherein the second joint 221 may be directly connected to the second current collector 22, or may be restricted on 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 may be, but is not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0114] Optionally, the first connector 211 and the first current collector 21 are integrally formed. On the one hand, there is no need to connect the first connector 211 and the first current collector 21 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the first connector 211 and the first current collector 21 through an additional connection process, the first connector 211 and the first current collector 21 in an integral structure have a higher connection firmness.

[0115] Optionally, the second joint 221 and the second current collector 22 are integrally formed. On the one hand, there is no need to connect the second joint 221 and the second current collector 22 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the second joint 221 and the second current collector 22 through an additional connection process, the second joint 221 and the second current collector 22 in an integral structure have a higher connection firmness.

[0116] Optionally, the first joint 211 and the second joint 221 can be but are not limited to being made of 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.

[0117] 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 be tube body structures protruding from the tube wall of the heat exchange tube 23 and connected to the interior of the heat exchange tube 23.

[0118] As an example, the first nozzle 232 and the second nozzle 233 are both tube structures protruding from the tube 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 can be fixedly connected to the heat exchange tube 23, wherein the first nozzle 232 and the second nozzle 233 can be directly connected to the heat exchange tube 23, or can be restricted on the heat exchange tube 23 by other components. As an example, the connection method between the first nozzle 232 and the heat exchange tube 23 and the connection method between the second nozzle 233 and the heat exchange tube 23 can be but not limited to bolt connection, welding, riveting, clamping or bonding, etc.

[0119] On the one hand, the above technical scheme can improve the connection firmness between the first current collector 21 and the heat exchange tube 23, as well as the connection firmness between the second current 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 scheme also have a certain positioning function, which can improve the assembly efficiency of the heat exchange component.

[0120] Fig.14 This is a schematic cross-sectional structure diagram of a first connector 211 of a battery 2 provided in some embodiments of the present application.

[0121] Continue to refer 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 .

[0122] Exemplarily, the seal 40 may be provided on the first joint 211, or on the first nozzle 232, or on both the first joint 211 and the first nozzle 232. 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.

[0123] As an example, the seal 40 is disposed on the first joint 211. The seal 40 may be detachably connected to the first joint 211, or may be fixedly connected to the first joint 211, wherein the seal 40 is directly connected to the first joint 211, or may be restricted 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 may be, but are not limited to, bolt connection, welding, riveting, clamping or bonding, etc.

[0124] Optionally, the seal 40 may be, but is not limited to, a sealant, a sealing ring, or a sealing pad, etc. As an example, the seal 40 may be, but is not limited to, made of rubber, polyurethane, silicone rubber, plastic (such as polyethylene, polypropylene, etc.), metal (such as copper, aluminum, stainless steel, etc.), cellulose board, or composite material (such as a combination of rubber and metal).

[0125] The above technical solution can reduce the risk of leakage of the heat exchange medium by providing a seal 40 between the first joint 211 and the first nozzle 232 , thereby further improving the reliability of the battery 2 .

[0126] 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.

[0127] A second groove is provided on the first nozzle 232 , and the second groove 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.

[0128] In some optional embodiments, the seal 40 is connected between the second joint 221 and the second nozzle 233, which can reduce the risk of leakage of the heat exchange medium, thereby further improving the reliability of the battery 2. The specific arrangement details between the seal 40, the second joint 221 and the second nozzle 233 can refer to the relevant description of the arrangement between the seal 40, the first joint 211 and the first nozzle 232, which will not be repeated here.

[0129] 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.

[0130] A fourth groove is provided on the second nozzle 233, and the fourth groove 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.

[0131] In some embodiments, there are multiple seals 40 , and the multiple seals 40 are arranged at intervals along the first direction X, which can further improve the sealing performance of the heat exchange component.

[0132] For example, the number of the sealing members 40 may be, but is not limited to, two, three or more.

[0133] In some embodiments, the heat exchange tube 23 includes a bent wall 234 , and the bent wall 234 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 .

[0134] The recess 231 is formed on the outer side of the heat exchange tube 23 by bending the bending wall 234 as a whole toward the inside of the heat exchange tube 23. On the one hand, the difficulty of the preparation process can be reduced, which is beneficial to reducing costs; on the other hand, the smoothness of the overall structure of the heat exchange tube 23 can be improved, which is beneficial to improving the appearance quality of the heat exchange tube 23.

[0135] In some embodiments, there are multiple bent walls 234, which are sequentially connected along the circumference of the heat exchange tube 23 to form a channel 235, and 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 bent walls 234.

[0136] 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 the number of the bent walls 234 is four, the four bent walls 234 of a heat exchange tube 23 are respectively provided corresponding to four battery cells 11. In other words, four heat exchange tubes 23 are provided around the outer periphery of a battery cell 11.

[0137] The above technical solution increases the number of the 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 , thereby facilitating further improving the energy density of the battery 2 .

[0138] In some embodiments, the heat exchange tube 23 further includes a partition 236 , which is connected to the inner wall of the channel 235 and divides the channel 235 into a plurality of sub-channels 2351 , and the plurality of sub-channels 2351 are arranged at intervals along the circumference of the heat exchange tube 23 .

[0139] Exemplarily, when the heat exchange medium enters the heat exchange tube 23, the partition 236 will divert the heat exchange medium so that the heat exchange medium flows into multiple sub-channels 2351. The partition 236 can be detachably connected to the bending wall 234, or fixedly connected to the bending wall 234, wherein the partition 236 is directly connected to the bending wall 234, or can be restricted on the bending wall 234 by other components. As an example, the connection between the partition 236 and the bending wall 234 can be, but not limited to, bolt connection, welding, riveting, clamping or bonding.

[0140] Optionally, the separator 236 may be but is not limited to being made of metal or non-metal materials. For example, the metal material may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0141] 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.

[0142] 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.

[0143] In some embodiments, the multiple sub-channels 2351 correspond to the multiple bent walls 234 one by one, which can further improve the heat exchange efficiency of the heat exchange tube 23 .

[0144] Exemplarily, the number of sub-channels 2351 matches the number of bending walls 234. As an example, when the number of bending walls 234 is four, the number of sub-channels 2351 is also four, and one sub-channel 2351 corresponds to one bending wall 234. Optionally, the partition 236 and the bending wall 234 enclose the sub-channel 2351.

[0145] In some embodiments, the partition 236 and the bending wall 234 are an integrally formed structure.

[0146] On the one hand, there is no need to connect the partition 236 and the bending wall 234 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the partition 236 and the bending wall 234 through an additional connection process, the partition 236 and the bending wall 234 in an integrated structure have a higher connection firmness.

[0147] Continue to refer Figure 3 In some embodiments, the battery module 10 further includes a restraining component 12, which is sleeved and connected to the side portions of the plurality of battery cells 11 in a direction perpendicular to the first direction X, and applies a pre-tightening force to the plurality of battery cells 11 in a direction perpendicular to the first direction X.

[0148] Exemplarily, the restraining member 12 may be made of an elastic and insulating material, such as rubber, silicone rubber, polyethylene, polyurethane, polyvinyl chloride or rubber foam, etc. The restraining member 12 may be sleeved on a plurality of battery cells 11 and provide a pre-tightening force to the plurality of battery cells 11 to improve the stability of the battery module 10.

[0149] Optionally, the restraining member 12 includes an elastic band in an annular shape, and the elastic band is sleeved and connected to the side of the plurality of battery cells 11 in a direction perpendicular to the first direction X. The elastic bands are connected head to tail to form an annular structure, and the elastic band has high deformability, and can better wrap the plurality of battery cells 11, and can provide a more comprehensive pre-tightening force for the plurality of battery cells 11. At the same time, the elastic band of the annular structure has a simple structure, low production cost, and good economic benefits.

[0150] Fig.15This is a schematic diagram of a three-dimensional structure of the cooperation between the second current collector 22 of a battery 2 and the sampling assembly 13 provided in some embodiments of the present application.

[0151] Continue to refer Fig.15 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. A through hole 1311 is provided on the bracket 131, and the electrode terminal of the battery cell 11 passes through the through hole 1311 and is connected to the current collector 132.

[0152] For example, the sampling assembly 13 may also 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, and the bracket 131 is used to provide a bearing function 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.

[0153] The second current collector 22 can be detachably connected to the bracket 131, or can be fixedly connected to the bracket 131, wherein the second current collector 22 is directly connected to the bracket 131, or can be restricted to 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.

[0154] 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.

[0155] In some embodiments, at least a portion of the second current collector 22 is embedded in the bracket 131 , which can reduce the space occupancy of the second current collector 22 , thereby further improving the energy density of the battery 2 .

[0156] In some optional embodiments, the second current collector 22 and the bracket 131 are integrally formed. On the one hand, there is no need to connect the second current collector 22 and the bracket 131 through an additional connection process, which simplifies the manufacturing process. At the same time, compared with connecting the second current collector 22 and the bracket 131 through an additional connection process, the second current collector 22 and the bracket 131 in an integral structure have a higher connection firmness.

[0157] According to some embodiments of the present application, the present application further provides an electrical device, comprising a battery 2 according to any of the above solutions, wherein the battery 2 is used only to provide electrical energy.

[0158] 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 practical application is provided here for illustration.

[0159] The embodiment of the present application provides a battery 2, which includes a box 30, a plurality of battery modules 10 and a heat exchange component. The plurality of battery modules 10 are arranged in the box 30 at intervals. The box 30 is provided with an inlet 31 and an outlet 32. The box 30 includes a frame 33, and an opening is provided at one end of the frame 33. The battery module 10 includes a plurality of battery cells 11, a restraining component 12 and a sampling component 13. The restraining component 12 is sleeved and connected to the side of the plurality of battery cells 11 in a direction perpendicular to the first direction X, and applies a pre-tightening force in a direction perpendicular to the first direction X to the plurality of battery cells 11.

[0160] The heat exchange assembly includes a first current collector 21, a second current collector 22, a plurality of 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 plurality of 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.

[0161] 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 opposite to each other along the first direction X, the first joint 211 is plugged with the first nozzle 232, and the second joint 221 is plugged with the second nozzle 233. The seal 40 is connected between the first joint 211 and the first nozzle 232, and the seal 40 is connected between the second joint 221 and the second nozzle 233.

[0162] A plurality of 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. The heat exchange tube 23 includes a plurality of bent walls 234 and a separator 236. The plurality of bent walls 234 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 bent walls 234 are bent toward the inside of the heat exchange tube 23 to form a recess 231 on the outside of the heat exchange tube 23. The recess 231 accommodates a part of the battery cell 11. The separator 236 is connected to the inner wall of the channel 235 and forms a sub-channel 2351 with the bent walls 234.

[0163] 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 close to the battery cell 11, and the current collector 132 is arranged on the side of the bracket 131 facing away from the battery cell 11. The bracket 131 is provided with a through hole 1311, and the electrode terminal of the battery cell 11 passes through the through hole 1311 and is connected to the current collector 132.

[0164] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0165] 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 replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be 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, characterized in that: include: A battery module, comprising a plurality of battery cells; A heat exchange assembly includes a first current collector, a second current collector and a plurality of heat exchange tubes, wherein 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 of the battery cells, and 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, characterized in that The at least two heat exchange tubes disposed on the outer periphery of each of the battery cells are connected to each other.

3. The battery according to claim 1, characterized in that The battery further comprises 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, characterized in that 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, characterized in that The box body includes a frame body, one end of the frame body is provided with an opening, and the first current collector covers the opening.

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

7. The battery according to claim 1, characterized in that 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, characterized in that The heat exchange assembly further comprises a seal, wherein the seal is 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, characterized in that There are multiple sealing members, and the multiple sealing members are arranged at intervals along the first direction.

10. The battery according to claim 1, characterized in that The heat exchange tube includes a bending wall, and the bending 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, characterized in that 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, characterized in that The heat exchange tube further includes a partition, which is connected to the inner wall of the channel and divides the channel into a plurality of sub-channels, and the plurality of sub-channels are arranged at intervals along the circumferential direction of the heat exchange tube.

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

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

15. The battery according to claim 1, characterized in that The battery module further includes a restraining component, which is sleeved and connected to the sides of the plurality of battery cells along a direction perpendicular to the first direction and applies a pre-tightening force to the plurality of battery cells along a direction perpendicular to the first direction.

16. The battery according to claim 1, characterized in that The battery module further includes a sampling assembly, the sampling assembly includes 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 arranged 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 to be connected with the busbar.

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

18. The battery according to any one of claims 1 to 17, characterized in that: The battery cell is a cylindrical battery cell.

19. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 18, wherein the battery is used to provide electrical energy.

Images