Heat exchange assembly, box body, battery, and electrical device

Abstract

The present application provides a heat exchange assembly (13), a box body (10), a battery (100), and an electrical device. The heat exchange assembly (13) comprises a first plate body (131) and a second plate body (132). The first plate body (131) has a first plate surface (1311), and the first plate body (131) comprises a first reinforcement layer member (1312). The second plate body (132) and the first plate body (131) are arranged in a stacked manner, and the second plate body (132) has a second plate surface (1321). A heat exchange flow channel (133) is provided on the first plate surface (1311) and / or the second plate surface (1321). At least part of the projection of the heat exchange flow channel (133) on a reference plane overlaps with the projection of the first reinforcement layer member (1312) on the reference plane, and the reference plane is perpendicular to the stacking direction of the first plate body (131) and the second plate body (132).

Description

Heat exchange components, boxes, batteries and electrical equipment

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202410256977.3 filed on March 6, 2024, entitled “Heat exchange component, box, battery and electrical equipment”, which is incorporated into this application in its entirety by reference. Technical Field

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

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important part of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0005] The heat exchange assembly in a battery is used to circulate a heat exchange medium to regulate the battery's temperature. However, due to its low structural strength, the heat exchange assembly is easily deformed by external forces.

[0006] Summary of the Invention

[0007] One of the purposes of the embodiments of the present application is to provide a heat exchange component, a box, a battery and an electrical device, aiming to solve the technical problem of low structural strength of the heat exchange component in the related art.

[0008] To solve the above technical problems, the technical solution adopted in the embodiment of the present application is: providing a heat exchange component, including:

[0009] A first plate body having a first plate surface, the first plate body including a first reinforcement layer;

[0010] A second plate body is stacked with the first plate body, and the second plate body has a second plate surface;

[0011] A heat exchange channel is provided on the first plate surface and / or the second plate surface, and the first plate surface is sealed to the second plate surface to close the heat exchange channel, and at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the first reinforcement layer on the reference plane, wherein the reference plane is perpendicular to the stacking direction of the first plate body and the second plate body.

[0012] The beneficial effect of the heat exchange component provided by the embodiment of the present application is that: a first reinforcement layer is provided on the first plate body of the heat exchange component provided by the embodiment of the present application. Since at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the first reinforcement layer on the reference plane, the first reinforcement layer can cover at least part of the heat exchange channel. In this way, at least the structural strength of the portion of the heat exchange component where the heat exchange channel is provided can be improved, thereby effectively reducing the risk of deformation of the heat exchange component.

[0013] In some embodiments of the present application, the first plate body further includes a first connecting layer stacked on a side of the first reinforcing layer facing the second plate body, and the first connecting layer has a first plate surface.

[0014] By adopting the above technical solution, it is convenient to connect the first plate body and the second plate body.

[0015] In some embodiments of the present application, the first connecting layer is welded to the second plate.

[0016] By adopting the above technical solution, the connection process of the first plate body and the second plate body is effectively simplified, thereby effectively improving the production efficiency of the heat exchange component.

[0017] In some embodiments of the present application, the first connecting layer is an aluminum layer.

[0018] By adopting the above technical solution, the first connecting layer can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0019] In some embodiments of the present application, the first connecting layer includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

[0020] By adopting the above technical solution, the first connecting layer can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body and the second plate body.

[0021] In some embodiments of the present application, the thickness of the first connecting layer is 0.2 mm-0.9 mm.

[0022] By adopting the above technical solution, the risk of the first connecting layer being welded through is effectively reduced, thereby effectively reducing the risk of the first reinforcing layer contacting the heat exchange medium, and effectively improving the corrosion of the first reinforcing layer.

[0023] In some embodiments of the present application, the first connecting layer includes a first layer and a second layer, the first layer is stacked between the first reinforcing layer and the second layer, the second layer has a first board surface, and the melting point of the second layer is lower than the melting point of the first layer.

[0024] By adopting the above technical solution, the first connecting layer can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0025] In some embodiments of the present application, the first layer is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer is a 4-series aluminum layer.

[0026] By adopting the above technical solution, the first connecting layer can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body and the second plate body.

[0027] In some embodiments of the present application, the thickness of the first layer is 0.1 mm-0.85 mm.

[0028] By adopting the above technical solution, the risk of the first connecting layer being welded through is effectively reduced, thereby effectively reducing the risk of the first reinforcing layer contacting the heat exchange medium, and effectively improving the corrosion of the first reinforcing layer.

[0029] In some embodiments of the present application, the thickness of the second layer is 0.05 mm-0.1 mm.

[0030] By adopting the above technical solution, the penetration requirement for welding the first plate body and the second plate body can be met, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0031] In some embodiments of the present application, the first reinforcement layer has a first panel surface.

[0032] By adopting the above technical solution, the first reinforcing layer can constitute the entire first plate body, which not only effectively improves the structural strength of the heat exchange component, but also effectively simplifies the structure of the heat exchange component.

[0033] In some embodiments of the present application, the second board body includes a second connecting layer, and the second connecting layer has a second board surface.

[0034] By adopting the above technical solution, it is convenient to connect the first plate body and the second plate body.

[0035] In some embodiments of the present application, the second connecting layer is welded to the first plate.

[0036] By adopting the above technical solution, the connection process of the first plate body and the second plate body is effectively simplified, thereby effectively improving the production efficiency of the heat exchange component.

[0037] In some embodiments of the present application, the second connecting layer is an aluminum layer.

[0038] By adopting the above technical solution, the second connecting layer can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0039] In some embodiments of the present application, the second connecting layer includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

[0040] By adopting the above technical solution, the second connecting layer can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body and the second plate body.

[0041] In some embodiments of the present application, the thickness of the second connecting layer is 0.2 mm-0.9 mm.

[0042] By adopting the above technical solution, the risk of the second connecting layer being welded through is effectively reduced.

[0043] In some embodiments of the present application, the second connecting layer includes a third layer and a fourth layer that are stacked together, the fourth layer is arranged on the side of the third layer facing the first plate body, the fourth layer has a second plate surface, and the melting point of the fourth layer is lower than the melting point of the third layer.

[0044] By adopting the above technical solution, the second connecting layer can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0045] In some embodiments of the present application, the third layer is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer is a 4-series aluminum layer.

[0046] By adopting the above technical solution, the second connecting layer can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body and the second plate body.

[0047] In some embodiments of the present application, the thickness of the third layer is 0.1 mm-0.85 mm.

[0048] By adopting the above technical solution, the risk of the second connecting layer being welded through is effectively reduced.

[0049] In some embodiments of the present application, the thickness of the fourth layer is 0.05 mm-0.1 mm.

[0050] By adopting the above technical solution, the penetration requirement for welding the first plate body and the second plate body can be met, thereby effectively improving the welding effect between the first plate body and the second plate body.

[0051] In some embodiments of the present application, the second plate body also includes a second reinforcement layer, which is stacked on the side of the second connecting layer facing away from the first plate body, and at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the second reinforcement layer on the reference plane.

[0052] By adopting the above technical solution, the structural strength of the heat exchange component is further improved, thereby further reducing the risk of deformation of the heat exchange component.

[0053] In some embodiments of the present application, the second plate body further includes a second reinforcement layer having a second plate surface, and at least a portion of a projection of the heat exchange channel on the reference surface coincides with a projection of the second reinforcement layer on the reference surface.

[0054] By adopting the above technical solution, the second plate body can be entirely composed of the second reinforcement layer, which not only effectively improves the structural strength of the heat exchange component, but also effectively simplifies the structure of the heat exchange component.

[0055] In some embodiments of the present application, the second reinforcement layer includes at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

[0056] By adopting the above technical solution, the heat exchange component can meet the yield strength requirements and tensile strength requirements, thereby further reducing the risk of deformation of the heat exchange component.

[0057] In some embodiments of the present application, the thickness of the second reinforcement layer is 0.1 mm-0.8 mm.

[0058] By adopting the above technical solution, the weight and volume of the heat exchange assembly can be optimized while the heat exchange assembly meets the strength requirements, thereby effectively improving the energy density of the battery using the above heat exchange assembly.

[0059] In some embodiments of the present application, the first reinforcement layer includes at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

[0060] By adopting the above technical solution, the heat exchange component can meet the yield strength requirements and tensile strength requirements, thereby further reducing the risk of deformation of the heat exchange component.

[0061] In some embodiments of the present application, the thickness of the first reinforcement layer is 0.1 mm-0.8 mm.

[0062] By adopting the above technical solution, the weight and volume of the heat exchange assembly can be optimized while the heat exchange assembly meets the strength requirements, thereby effectively improving the energy density of the battery using the above heat exchange assembly.

[0063] In some embodiments of the present application, a first anti-corrosion layer is provided on the first plate surface; and / or a second anti-corrosion layer is provided on the second plate surface.

[0064] By adopting the above technical solution, the risk of the first plate and the second plate contacting the heat exchange medium is effectively reduced, thereby effectively improving the situation where the first plate and the second plate are corroded by the heat exchange medium.

[0065] In some embodiments of the present application, a first heat-resistant layer is provided on the first board surface; and / or a second heat-resistant layer is provided on the second board surface.

[0066] By adopting the above technical solution, when the first plate body and the second plate body are welded, heat can be blocked from being transferred from the first plate surface to the various layer structures of the first plate body and from the second plate surface to the various layer structures of the second plate body, thereby effectively improving the thermal expansion of the first plate body and the second plate body, and effectively reducing the risk of stratification of the first plate body and the second plate body.

[0067] In some embodiments of the present application, the depth of the heat exchange channel is 3 mm-3.5 mm.

[0068] By adopting the above technical solution, the risk of cracking of the heat exchange component during the molding process of the heat exchange flow channel is effectively reduced.

[0069] In some embodiments of the present application, the width of the heat exchange channel is 3 mm-5 mm.

[0070] By adopting the above technical solution, the risk of cracking of the heat exchange component during the molding process of the heat exchange flow channel is effectively reduced.

[0071] In some embodiments of the present application, the wall of the heat exchange channel has a corner, and the corner is a rounded structure.

[0072] By adopting the above technical solution, the stress borne by the heat exchange component during the molding process of the heat exchange flow channel is effectively reduced, thereby effectively reducing the risk of cracking of the heat exchange component.

[0073] In some embodiments of the present application, the radius of the rounded corner structure is 2 mm-8 mm.

[0074] By adopting the above technical solution, the risk of cracking of the heat exchange component during the molding process of the heat exchange flow channel is further reduced.

[0075] An embodiment of the present application further provides a box, comprising a frame and the heat exchange assembly described in any one of the above embodiments, wherein the frame is connected to the heat exchange assembly to define an accommodating space for accommodating a battery cell.

[0076] The beneficial effect of the box provided by the embodiment of the present application is that the box provided by the embodiment of the present application effectively improves the structural strength of the box due to the use of the heat exchange component described in any of the above embodiments.

[0077] In some embodiments of the present application, the first reinforcement layer is welded to the frame, and the material of the first reinforcement layer is the same as that of the frame.

[0078] By adopting the above technical solution, the connection strength between the heat exchange component and the frame is effectively improved.

[0079] In some embodiments of the present application, at least a portion of the first reinforcement layer extends out of a side of the second plate body to form a welding portion, and the side of the welding portion facing the second plate body is welded to the frame.

[0080] By adopting the above technical solution, it is easy to connect the heat exchange component to the frame.

[0081] An embodiment of the present application further provides a battery, comprising a battery cell and the box body described in any of the above embodiments, wherein the battery cell is accommodated in the accommodation space, and the heat exchange component is used to adjust the temperature of the battery cell.

[0082] The beneficial effect of the battery provided by the embodiment of the present application is that the battery provided by the embodiment of the present application effectively improves the structural strength of the battery due to the use of the box body described in any of the above embodiments.

[0083] An embodiment of the present application also provides an electrical device including the above-mentioned battery.

[0084] The beneficial effect of the electric device provided by the embodiment of the present application is that the electric device provided by the embodiment of the present application effectively improves the structural strength of the electric device due to the use of the above-mentioned battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0086] FIG1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0087] FIG2 is a schematic diagram of an exploded structure of a battery provided in an embodiment of the present application;

[0088] FIG3 is a schematic diagram of the exploded structure of a heat exchange assembly provided in an embodiment of the present application;

[0089] FIG4 is a schematic structural diagram of a first plate body provided in one embodiment of the present application;

[0090] FIG5 is a schematic diagram of an exploded structure of a first plate body provided by another embodiment of the present application;

[0091] FIG6 is a schematic diagram of an exploded structure of a first plate body provided in yet another embodiment of the present application;

[0092] FIG7 is a schematic diagram of a top view of the first plate body provided in an embodiment of the present application;

[0093] FIG8 is a schematic cross-sectional view of the first plate body shown in FIG7 along line AA;

[0094] FIG9 is an enlarged structural diagram of point B of the first plate shown in FIG8 ;

[0095] FIG10 is a schematic structural diagram of a second plate provided in one embodiment of the present application;

[0096] FIG11 is a schematic diagram of an exploded structure of a second plate provided in another embodiment of the present application;

[0097] FIG12 is a schematic diagram of an exploded structure of a second plate provided in yet another embodiment of the present application;

[0098] FIG13 is a schematic top view of the heat exchange assembly provided in an embodiment of the present application;

[0099] FIG14 is a schematic cross-sectional view of the heat exchange assembly shown in FIG13 along line CC.

[0100] Explanation of the accompanying drawings: 1000, vehicle; 100, battery; 10, casing; 11, first part; 12, second part; 13, heat exchange assembly; 131, first plate; 1311, first plate surface; 1312, first reinforcement layer; 13121, welding portion; 1313, first connecting layer; 13131, first layer; 13132, second layer; 132, second plate; 1321, second plate surface; 1322, second reinforcement layer; 1323, second connecting layer; 13231, third layer; 13232, fourth layer; 133, heat exchange channel; 1331, corner; 20, battery cell; 200, controller; 300, motor. DETAILED DESCRIPTION

[0101] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0102] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0103] 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 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 the present application shown in the drawings are for illustrative purposes only and should not constitute any limitation on the present application.

[0104] The battery referred to in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. A battery generally includes a housing that encloses one or more battery cells. The housing can, to a certain extent, prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0105] In related technologies, the housing typically includes a heat exchange assembly, which contacts the battery cells to absorb heat generated by them or transfer it to them, thereby regulating their temperature. The heat exchange assembly typically consists of two plates, at least one of which is provided with a heat exchange channel for circulating a heat exchange medium. The heat exchange channel is typically formed on the plate using a stamping process, which reduces the structural strength of the plate where the heat exchange channel is located, making it susceptible to deformation when subjected to external forces.

[0106] In order to reduce the risk of deformation of the heat exchange component, a first reinforcement layer is provided on the first plate body of the heat exchange component provided in the embodiment of the present application. Since at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the first reinforcement layer on the reference plane, the first reinforcement layer can cover at least part of the heat exchange channel. In this way, at least the structural strength of the portion of the heat exchange component where the heat exchange channel is provided can be improved, thereby effectively reducing the risk of deformation of the heat exchange component.

[0107] The technical solutions described in the embodiments of the present application can be applied to batteries and electrical equipment using batteries, and can also be applied to other devices with temperature regulation requirements, such as fuel engines, gas stoves, boilers, etc. Among them, electrical equipment can be, but is not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include 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.

[0108] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in an embodiment of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0109] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000 , but also as a driving power source for the vehicle 1000 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000 .

[0110] Please refer to Figure 2, which is an exploded view of a battery 100 according to an embodiment of the present application. The battery 100 includes a housing 10 and a battery cell 20, which is housed within the housing 10. The housing 10 provides a storage space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 can include a first portion 11 and a second portion 12, which cover each other and together define a storage space for the battery cell 20. The second portion 12 can be a hollow structure with one end open. The first portion 11 can be a plate-like structure, with the first portion 11 covering the open side of the second portion 12, so that the first portion 11 and the second portion 12 together define a storage space. Alternatively, the first portion 11 and the second portion 12 can each be a hollow structure with one end open, with the open side of the first portion 11 covering the open side of the second portion 12. Of course, the housing 10 formed by the first portion 11 and the second portion 12 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0111] In some embodiments, the housing 10 may include a frame and a heat exchange assembly 13. The frame is used to define the aforementioned accommodation space. The heat exchange assembly 13 is a plate-like structure that covers the opening of the frame and is connected to the frame to form the aforementioned first portion 11 or second portion 12. The heat exchange assembly 13 contacts the battery cells 20 to absorb heat generated by the battery cells 20 or transfer heat to the battery cells 20, thereby regulating the temperature of the battery cells 20.

[0112] In some embodiments, the box 10 may serve as part of the chassis structure of the vehicle 1000. For example, a portion of the box 10 may form at least a portion of the floor of the vehicle 1000, or a portion of the box 10 may form at least a portion of the cross member and longitudinal member of the vehicle 1000.

[0113] In the battery 100, if there are multiple battery cells 20, the multiple battery cells 20 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 20. The multiple battery cells 20 can be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery cell 20 can be housed within the housing 10. Alternatively, the battery 100 can be constructed by first connecting multiple battery cells 20 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a single unit and housed within the housing 10. The battery 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 20.

[0114] Each battery cell 20 may be a secondary battery or a primary battery. A secondary battery refers to a battery cell 20 that can be recharged to activate the active material after discharge and continue to be used. A primary battery refers to a battery cell 20 that cannot be recharged to activate the active material after the battery cell 20's power is exhausted and continues to be used. The battery cell 20 may also be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., but is not limited thereto. The battery cell 20 may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell 20 of another shape. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells, and polygonal prismatic battery cells. Polygonal prismatic battery cells, for example, hexagonal prismatic battery cells, are not particularly limited in this application.

[0115] The battery cell 20 in the embodiment of the present application includes an electrode assembly and a housing, and the electrode assembly is installed in the housing to protect the electrode assembly.

[0116] The electrode assembly is also called a battery cell. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet and a separator. The electrode assembly mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The part of the positive electrode collector that is not coated with the positive electrode active material layer protrudes from the part that is coated with the positive electrode active material layer. The part that is not coated with the positive electrode active material layer serves as the positive electrode tab, or a metal conductor is welded on the positive electrode collector and led out to serve as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be, but is not limited to, lithium cobalt oxide, lithium iron phosphate, ternary lithium, lithium manganese oxide, etc.

[0117] The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The portion of the negative electrode current collector not coated with the negative electrode active material layer protrudes from the portion coated with the negative electrode active material layer. The portion not coated with the negative electrode active material layer serves as the negative electrode tab. Alternatively, a metal conductor is welded to the negative electrode current collector and extended to serve as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be, but is not limited to, carbon, silicon, and the like.

[0118] In order to ensure that a large current can pass without melting to a certain extent, there are multiple positive electrode tabs and they are stacked together, and there are multiple negative electrode tabs and they are stacked together.

[0119] The electrode assembly can be a wound structure or a laminated structure. The embodiments of the present application are not limited to this. The wound structure is mostly to weld the tabs to the current collector, and then arrange them in the order of positive electrode sheet - diaphragm - negative electrode sheet - diaphragm; and then form a cylindrical or square battery cell by winding. The laminated structure is mostly to lead out the tabs on the current collector, arrange the positive electrode sheet, negative electrode sheet and diaphragm in the order of positive electrode sheet - diaphragm - negative electrode sheet - diaphragm, and stack them together layer by layer to form a laminated battery cell; wherein, the diaphragm can be cut and directly laminated with the diaphragm sheet, or the diaphragm is not cut, but is folded in a Z shape. The material of the diaphragm can be but is not limited to PP (PolypropylFnF, polypropylene), PF (PolyFthylFnF, polyethylene), etc. The separator is an insulating film placed between the positive and negative electrodes. Its primary function is to separate the positive and negative electrodes and prevent electrons from freely passing through the battery cell 20, thus preventing short circuits to a certain extent. However, it allows ions in the electrolyte to pass freely between the positive and negative electrodes, forming a circuit between the positive and negative electrodes. The positive and negative electrodes are collectively referred to as electrodes. The positive and negative electrode tabs are collectively referred to as tabs.

[0120] The outer shell refers to a housing structure with a space inside that accommodates and protects the electrode assembly. The outer shell can be made of a material with a certain degree of hardness and strength. This prevents deformation when subjected to compression or collision, thus providing the battery cell 20 with greater structural strength and improved reliability. The outer shell can be made of, but is not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, and the like.

[0121] The outer casing of the battery cell 20 is provided with electrode terminals. Electrode terminals are conductive components mounted on the outer casing. They connect to the tabs of the electrode assembly to output power from the battery cell 20 or charge the battery cell 20. A battery cell 20 generally has two electrode terminals, one connected to the positive and one connected to the negative tab of the electrode assembly, respectively. The electrode terminal connected to the positive tab is the positive electrode terminal, and the electrode terminal connected to the negative tab is the negative electrode terminal.

[0122] In some embodiments, the battery cell 20 also includes a pressure relief mechanism, which is disposed on the outer shell of the battery cell 20 so that when the temperature or pressure of the battery cell 20 exceeds a safety threshold, the gas or liquid inside the battery cell 20 can be released to relieve the pressure inside the battery cell 20 and reduce the risk of explosion of the battery cell 20.

[0123] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0124] In the first aspect, please refer to Figures 3 to 6 together. The embodiment of the present application provides a heat exchange component 13, including a first plate body 131 and a second plate body 132. The first plate body 131 has a first plate surface 1311, and the first plate body 131 includes a first reinforcement layer 1312. The second plate body 132 is stacked with the first plate body 131, and the second plate body 132 has a second plate surface 1321. A heat exchange channel 133 is provided on the first plate surface 1311 and / or the second plate surface 1321. The first plate surface 1311 and the second plate surface 1321 are sealed and connected to close the heat exchange channel 133. At least a portion of the projection of the heat exchange channel 133 on the reference plane coincides with the projection of the first reinforcement layer 1312 on the reference plane, wherein the reference plane is perpendicular to the stacking direction of the first plate body 131 and the second plate body 132.

[0125] The first plate 131 and the second plate 132 are the two main parts of the heat exchange assembly 13. The first plate 131 and the second plate 132 are stacked and connected to each other so that the first plate 131 and the second plate 132 together enclose a circulation space for circulating heat exchange medium.

[0126] The first plate surface 1311 is the surface of the first plate body 131 facing the second plate body 132 , and the second plate surface 1321 is the surface of the second plate body 132 facing the first plate body 131 . At least one of the first plate surface 1311 and the second plate surface 1321 is provided with a heat exchange channel 133 .

[0127] In some embodiments, a heat exchange channel 133 is recessed on the first plate surface 1311 , and the second plate surface 1321 is a plane. The first plate surface 1311 and the second plate surface 1321 are sealed to enclose the heat exchange channel 133 to form the above-mentioned circulation space.

[0128] In other embodiments, the first plate surface 1311 is a plane, and the heat exchange channel 133 is recessed on the second plate surface 1321 . The first plate surface 1311 and the second plate surface 1321 are sealed to enclose the heat exchange channel 133 to form the above-mentioned circulation space.

[0129] In some other embodiments, the first plate surface 1311 and the second plate surface 1321 are both recessed with heat exchange channels 133, and the first plate surface 1311 and the second plate surface 1321 are sealed and connected to seal the heat exchange channels 133 on the first plate surface 1311 and the heat exchange channels 133 on the second plate surface 1321 to form the above-mentioned circulation space, wherein the heat exchange channels 133 on the first plate surface 1311 constitute a part of the above-mentioned circulation space, and the heat exchange channels 133 on the second plate surface 1321 constitute another part of the above-mentioned circulation space.

[0130] It should be noted that the sealing connection between the first plate surface 1311 and the second plate surface 1321 may be, but is not limited to, welding or bonding.

[0131] In some embodiments, the heat exchange channel 133 is stamped on the first plate surface 1311 and / or the second plate surface 1321 , and the first plate surface 1311 and the second plate surface 1321 are welded to close the heat exchange channel 133 .

[0132] In other embodiments, the heat exchange channel 133 is stamped on the first plate surface 1311 and / or the second plate surface 1321 , and the first plate surface 1311 and the second plate surface 1321 are bonded to close the heat exchange channel 133 .

[0133] In some other embodiments, the first plate body 131 and the second plate body 132 are connected into one body by a rolling process, and the heat exchange channel 133 is formed between the first plate body 131 and the second plate body 132 by a blowing process.

[0134] The first reinforcement layer 1312 may be a portion of the layer structure of the first plate 131, or may be the entire first plate 131. It is understood that the first reinforcement layer 1312 is made of a high-strength metal material, which may include but is not limited to stainless steel, carbon steel, 5-series aluminum, 6-series aluminum, 7-series aluminum, etc. Compared to the heat exchange assembly 13 made of conventional metal materials such as 1-series aluminum and 3-series aluminum, the first reinforcement layer 1312 has a greater structural strength, wherein the structural strength includes but is not limited to yield strength and tensile strength. For example, the yield strength of the first reinforcement layer 1312 is greater than 54 MPa, and the tensile strength of the first reinforcement layer 1312 is greater than 95 MPa.

[0135] On a reference plane perpendicular to the stacking direction of the first plate 131 and the second plate 132, at least a portion of the projection of the heat exchange channel 133 overlaps with a projection of the first reinforcement layer 1312. In other words, at least a portion of the heat exchange channel 133 is disposed opposite the first reinforcement layer 1312 in the stacking direction of the first plate 131 and the second plate 132. In some embodiments, on a reference plane perpendicular to the stacking direction of the first plate 131 and the second plate 132, the entire projection of the heat exchange channel 133 overlaps with a projection of the first reinforcement layer 1312. When an external force acts on the portion of the heat exchange channel 133 opposite the first reinforcement layer 1312, the first reinforcement layer 1312 can provide support to the portion of the heat exchange channel 133 opposite the first reinforcement layer 1312 to resist the external force, thereby reducing the risk of deformation of the heat exchange channel 133.

[0136] The first plate body 131 of the heat exchange component 13 provided in the embodiment of the present application is provided with a first reinforcement layer 1312. Since at least part of the projection of the heat exchange channel 133 on the reference plane coincides with the projection of the first reinforcement layer 1312 on the reference plane, the first reinforcement layer 1312 can cover at least part of the heat exchange channel 133. In this way, the structural strength of the portion of the heat exchange component 13 where the heat exchange channel 133 is provided can be at least improved, thereby effectively reducing the risk of deformation of the heat exchange component 13.

[0137] In some embodiments of the present application, referring to FIG. 5 , the first plate 131 further includes a first connection layer 1313 stacked on a side of the first reinforcement layer 1312 facing the second plate 132 . The first connection layer 1313 has a first plate surface 1311 .

[0138] The first connecting layer 1313 has a first plate surface 1311. In other words, the first connecting layer 1313 is the inner layer of the first plate 131 and is used to connect the second plate 132. The first reinforcement layer 1312 can serve as the outer layer of the first plate 131. In some embodiments, the first connecting layer 1313 and the first reinforcement layer 1312 are laminated and then combined using a rolling process to form the first plate 131. Of course, the first connecting layer 1313 and the first reinforcement layer 1312 can also be connected using methods such as welding or bonding to form the first plate 131. It is understood that the first connecting layer 1313 is made of a metal material, and the structural strength of the first connecting layer 1313 can be less than that of the first reinforcement layer 1312. In other words, the strength of the metal material used to make the first connecting layer 1313 is less than the strength of the metal material used to make the first reinforcement layer 1312. In some embodiments, the first connecting layer 1313 may be a unitary member, i.e., the first connecting layer 1313 is made of a single metal material. In other embodiments, the first connecting layer 1313 may include multiple layers, each made of the same or different materials. The material of the first connecting layer 1313 may be, but is not limited to, a 1-series aluminum layer, a 3-series aluminum layer, a 4-series aluminum layer, or the like.

[0139] By adopting the above technical solution, it is convenient to connect the first plate body 131 and the second plate body 132.

[0140] In some embodiments of the present application, the first connection layer 1313 is welded to the second plate 132 .

[0141] During the welding process, in order to better seal the heat exchange channel 133, the first connecting layer 1313 and the second plate 132 can be welded along the edge of the first plate 131. At the same time, the first connecting layer 1313 and the second plate 132 can be welded along the edge of the heat exchange channel 133. The welding method of the first connecting layer 1313 and the second plate 132 can be, but is not limited to, furnace brazing, laser welding, arc welding, etc.

[0142] By adopting the above technical solution, the connection process of the first plate body 131 and the second plate body 132 is effectively simplified, thereby effectively improving the production efficiency of the heat exchange assembly 13.

[0143] In some embodiments of the present application, the first connection layer 1313 is an aluminum layer.

[0144] In other words, the first connection layer 1313 is made of aluminum. Compared with high-strength metal materials such as steel, aluminum has a lower melting point and can better adapt to welding temperature.

[0145] In some embodiments, the first connection layer 1313 and the second plate 132 are welded using a furnace brazing process.

[0146] By adopting the above technical solution, the first connecting layer 1313 can better adapt to the welding temperature of the furnace brazing process, thereby effectively improving the welding effect between the first plate body 131 and the second plate body 132.

[0147] In some embodiments of the present application, the first connection layer 1313 includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

[0148] In other words, the first connecting layer 1313 is made of at least one of 1 series aluminum, 3 series aluminum, and 4 series aluminum. In this embodiment, the first connecting layer 1313 is a one-piece component, that is, the first connecting layer 1313 is made entirely of at least one of 1 series aluminum, 3 series aluminum, and 4 series aluminum.

[0149] By adopting the above technical solution, the first connection layer 1313 can better adapt to the welding temperature, thereby further improving the welding effect between the first plate 131 and the second plate 132 .

[0150] In some embodiments of the present application, the thickness of the first connection layer 1313 is 0.2 mm-0.9 mm.

[0151] The thickness of the first connecting layer 1313 refers to the dimension of the first connecting layer 1313 along the stacking direction of the first plate 131 and the second plate 132. The thickness of each part of the first connecting layer 1313 may be the same or different. It should be noted that when the first connecting layer 1313 has at least two parts with different thicknesses, the thickness of each part of the first connecting layer 1313 is within the range of 0.2mm-0.9mm.

[0152] When the first connecting layer 1313 is entirely made of at least one of 1-series aluminum, 3-series aluminum, and 4-series aluminum, the thickness of the first connecting layer 1313 is 0.2 mm to 0.9 mm, that is, the minimum thickness of the first connecting layer 1313 is 0.2 mm, to reduce the risk of the first connecting layer 1313 being welded through during welding. The thickness of the first connecting layer 1313 can be determined according to actual application requirements, and can specifically be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, etc.

[0153] By adopting the above technical solution, the risk of the first connecting layer 1313 being welded through is effectively reduced, thereby effectively reducing the risk of the first reinforcing layer 1312 contacting the heat exchange medium, and effectively improving the corrosion of the first reinforcing layer 1312.

[0154] Of course, on the other hand, when the first connecting layer 1313 is entirely made of at least one of 1 series aluminum, 3 series aluminum and 4 series aluminum, the maximum thickness of the first connecting layer 1313 is limited to 0.9 mm, so that the heat exchange component 13 will not be significantly increased in weight and volume due to the excessive thickness of the first connecting layer 1313, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0155] In some embodiments of the present application, please refer to Figure 6, the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 is stacked between the first reinforcement layer 1312 and the second layer 13132, the second layer 13132 has a first plate surface 1311, and the melting point of the second layer 13132 is lower than the melting point of the first layer 13131.

[0156] In other words, in this embodiment, the first connection layer 1313 is composed of at least two stacked layers, wherein the first layer 13131 can serve as the base structure of the first connection layer 1313 , and the second layer 13132 can serve as the connection layer structure for connecting the second plate 132 .

[0157] When the first connecting layer 1313 and the second plate 132 are welded, since the melting point of the second layer 13132 is lower than the melting point of the first layer 13131, the second layer 13132 is easier to melt than the first layer 13131, so that the first connecting layer 1313 can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate 131 and the second plate 132.

[0158] In some embodiments of the present application, the first layer 13131 is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer 13132 is a 4-series aluminum layer.

[0159] By adopting the above technical solution, the first connection layer 1313 can better adapt to the welding temperature, thereby further improving the welding effect between the first plate 131 and the second plate 132 .

[0160] In some embodiments of the present application, the thickness of the first layer 13131 is 0.1 mm-0.85 mm.

[0161] The thickness of the first layer 13131 refers to the dimension of the first layer 13131 along the stacking direction of the first plate 131 and the second plate 132. The thicknesses of various parts of the first layer 13131 may be the same or different. It should be noted that when the first layer 13131 has at least two parts with different thicknesses, the thicknesses of various parts of the first layer 13131 are all within the range of 0.1mm-0.85mm.

[0162] When the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, and the first layer 13131 is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer 13132 is a 4-series aluminum layer, the thickness of the first layer 13131 is 0.1 mm to 0.85 mm, that is, the minimum thickness of the first layer 13131 is 0.1 mm, to reduce the risk of welding through the first layer 13131 during welding. The thickness of the first layer 13131 can be determined according to actual application requirements, and can specifically be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.85 mm, etc.

[0163] By adopting the above technical solution, the risk of the first connecting layer 1313 being welded through is effectively reduced, thereby effectively reducing the risk of the first reinforcing layer 1312 contacting the heat exchange medium, and effectively improving the corrosion of the first reinforcing layer 1312.

[0164] Of course, on the other hand, when the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer 13132 is a 4-series aluminum layer, the maximum thickness of the first layer 13131 is limited to 0.85 mm, so that the heat exchange component 13 will not be greatly increased in weight and volume due to the excessive thickness of the first connecting layer 1313, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0165] In some embodiments of the present application, the thickness of the second layer 13132 is 0.05 mm-0.1 mm.

[0166] The thickness of the second layer 13132 refers to the size of the second layer 13132 along the stacking direction of the first plate 131 and the second plate 132 before the first connecting layer 1313 and the second plate 132 are welded. The thickness of each part of the second layer 13132 may be the same or different. It should be noted that when the second layer 13132 has at least two parts with different thicknesses, the thickness of each part of the second layer 13132 is within the range of 0.05mm-0.1mm.

[0167] When the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, and the first layer 13131 is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer 13132 is a 4-series aluminum layer, the thickness of the second layer 13132 is 0.05 mm to 0.1 mm, that is, the minimum thickness of the second layer 13132 is 0.05 mm. In this way, after the second layer 13132 is melted, the weld 13121 between the first plate 131 and the second plate 132 can have sufficient penetration. The thickness of the second layer 13132 can be determined according to actual application requirements, and can be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc.

[0168] By adopting the above technical solution, the penetration requirement for welding the first plate 131 and the second plate 132 can be met, thereby effectively improving the welding effect between the first plate 131 and the second plate 132 .

[0169] In some embodiments of the present application, referring to FIG. 4 , the first reinforcement layer 1312 has a first plate surface 1311 .

[0170] In some embodiments, the first reinforcement layer 1312 may constitute the entire first plate 131 , which not only effectively improves the structural strength of the heat exchange assembly 13 , but also effectively simplifies the structure of the heat exchange assembly 13 .

[0171] In some embodiments of the present application, referring to FIG. 11 , the second plate body 132 includes a second connection layer 1323 , and the second connection layer 1323 has a second plate surface 1321 .

[0172] In some embodiments, the second connection layer 1323 may constitute the entire second plate 132 and be connected to the first plate 131 .

[0173] In other embodiments, the second plate body 132 further includes other layer structures, and the second connecting layer 1323 can serve as the inner layer structure of the second plate body 132 . The second connecting layer 1323 is used to connect to the first plate body 131 .

[0174] It is understood that the second connecting layer 1323 is made of a metal material, and the structural strength of the second connecting layer 1323 can be less than the structural strength of the first reinforcing layer 1312. In other words, the strength of the metal material used to make the second connecting layer 1323 is less than the strength of the metal material used to make the first reinforcing layer 1312. In some embodiments, the second connecting layer 1323 can be a single component, that is, the second connecting layer 1323 is made of a single metal material. In other embodiments, the second connecting layer 1323 can include multiple layers, and the materials of each layer can be the same or different. The material of the second connecting layer 1323 can be, but is not limited to, a 1 series aluminum layer, a 3 series aluminum layer, a 4 series aluminum layer, etc.

[0175] By adopting the above technical solution, it is convenient to connect the first plate body 131 and the second plate body 132.

[0176] In some embodiments of the present application, the second connection layer 1323 is welded to the first plate 131 .

[0177] By adopting the above technical solution, the connection process of the first plate body 131 and the second plate body 132 is effectively simplified, thereby effectively improving the production efficiency of the heat exchange assembly 13.

[0178] In some embodiments of the present application, the second connection layer 1323 is an aluminum layer.

[0179] In other words, the second connection layer 1323 is made of aluminum. Compared with high-strength metal materials such as steel, aluminum has a lower melting point and can better adapt to welding temperature.

[0180] In some embodiments, the second connection layer 1323 and the first plate 131 are welded using a furnace brazing process.

[0181] By adopting the above technical solution, the second connection layer 1323 can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate body 131 and the second plate body 132 .

[0182] In some embodiments of the present application, the second connection layer 1323 includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

[0183] In other words, the second connecting layer 1323 is made of at least one of 1 series aluminum, 3 series aluminum, and 4 series aluminum. In this embodiment, the second connecting layer 1323 is a one-piece component, that is, the second connecting layer 1323 is entirely made of at least one of 1 series aluminum, 3 series aluminum, and 4 series aluminum.

[0184] By adopting the above technical solution, the second connection layer 1323 can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body 131 and the second plate body 132 .

[0185] In some embodiments of the present application, the thickness of the second connection layer 1323 is 0.2 mm-0.9 mm.

[0186] The thickness of the second connecting layer 1323 refers to the size of the second connecting layer 1323 along the stacking direction of the first plate 131 and the second plate 132. The thickness of each part of the second connecting layer 1323 may be the same or different. It should be noted that when the second connecting layer 1323 has at least two parts with different thicknesses, the thickness of each part of the second connecting layer 1323 is within the range of 0.2mm-0.9mm.

[0187] When the second connecting layer 1323 is entirely made of at least one of 1-series aluminum, 3-series aluminum, and 4-series aluminum, the thickness of the second connecting layer 1323 is 0.2 mm to 0.9 mm, that is, the minimum thickness of the second connecting layer 1323 is 0.2 mm, to reduce the risk of the second connecting layer 1323 being welded through during welding. The thickness of the second connecting layer 1323 can be determined according to actual application requirements, and can specifically be 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, etc.

[0188] By adopting the above technical solution, the risk of the second connection layer 1323 being welded through is effectively reduced.

[0189] Of course, on the other hand, when the second connecting layer 1323 is entirely made of at least one of 1 series aluminum, 3 series aluminum and 4 series aluminum, the maximum thickness of the second connecting layer 1323 is limited to 0.9 mm, so that the heat exchange component 13 will not be significantly increased in weight and volume due to the excessive thickness of the second connecting layer 1323, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0190] In some embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the second plate body 132 includes a second connecting layer 1323, the second connecting layer 1323 constitutes the entire second plate body 132, the second connecting layer 1323 has a second plate surface 1321, the second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer, the first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0191] In other embodiments, the first plate 131 includes a first reinforcement layer 1312 and a first connection layer 1313, the first reinforcement layer 1312 and the first connection layer 1313 are stacked, the first connection layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 1313 2 has a first plate surface 1311, a second layer 13132 is a 4-series aluminum layer component, the second plate body 132 includes a second connecting layer 1323, the second connecting layer 1323 constitutes the entire second plate body 132, the second connecting layer 1323 has a second plate surface 1321, the second connecting layer 1323 is an integral component and is a 1-series aluminum layer component or a 3-series aluminum layer component, and the first plate surface 1311 and the second plate surface 1321 are sealed.

[0192] In some other embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The second plate body 132 includes a second connecting layer 1323, which constitutes the entire second plate body 132, and the second connecting layer 1323 has a second plate surface 1321. The second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0193] In some embodiments of the present application, referring to Figure 12, the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232 stacked together, the fourth layer 13232 is arranged on the side of the third layer 13231 facing the first plate 131, the fourth layer 13232 has a second plate surface 1321, and the melting point of the fourth layer 13232 is lower than the melting point of the third layer 13231.

[0194] In other words, in this embodiment, the second connection layer 1323 is composed of at least two stacked layers, wherein the third layer 13231 can serve as the base structure of the second connection layer 1323 , and the fourth layer 13232 can serve as the connection layer structure for connecting to the first plate 131 .

[0195] When the second connecting layer 1323 is welded to the first plate 131, since the melting point of the fourth layer 13232 is lower than the melting point of the third layer 13231, the fourth layer 13232 is easier to melt than the third layer 13231, so that the second connecting layer 1323 can better adapt to the welding temperature, thereby effectively improving the welding effect between the first plate 131 and the second plate 132.

[0196] In some embodiments of the present application, the third layer 13231 is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer 13232 is a 4-series aluminum layer.

[0197] By adopting the above technical solution, the second connection layer 1323 can better adapt to the welding temperature, thereby further improving the welding effect between the first plate body 131 and the second plate body 132 .

[0198] In some embodiments of the present application, the thickness of the third layer 13231 is 0.1 mm-0.85 mm.

[0199] The thickness of the third layer 13231 refers to the dimension of the third layer 13231 along the stacking direction of the first plate 131 and the second plate 132. The thicknesses of various parts of the third layer 13231 may be the same or different. It should be noted that when the third layer 13231 has at least two parts with different thicknesses, the thicknesses of various parts of the third layer 13231 are all within the range of 0.1mm-0.85mm.

[0200] When the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, and the third layer 13231 is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer 13232 is a 4-series aluminum layer, the thickness of the third layer 13231 is 0.1 mm to 0.85 mm, that is, the minimum thickness of the third layer 13231 is 0.1 mm, to reduce the risk of the third layer 13231 being welded through during welding. The thickness of the third layer 13231 can be determined according to actual application requirements, and can specifically be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.85 mm, etc.

[0201] By adopting the above technical solution, the risk of the second connection layer 1323 being welded through is effectively reduced.

[0202] Of course, on the other hand, when the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, the third layer 13231 is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer 13232 is a 4-series aluminum layer, the maximum thickness of the third layer 13231 is limited to 0.85 mm, so that the heat exchange component 13 will not cause a significant increase in weight and volume due to the excessive thickness of the second connecting layer 1323, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0203] In some embodiments of the present application, the thickness of the fourth layer 13232 is 0.05 mm-0.1 mm.

[0204] The thickness of the fourth layer 13232 refers to the dimension of the fourth layer 13232 along the stacking direction of the first plate 131 and the second plate 132 before the second connecting layer 1323 and the first plate 131 are welded. The thickness of each part of the fourth layer 13232 may be the same or different. It should be noted that when the fourth layer 13232 has at least two parts with different thicknesses, the thickness of each part of the fourth layer 13232 is within the range of 0.05mm-0.1mm.

[0205] When the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, and the third layer 13231 is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer 13232 is a 4-series aluminum layer, the thickness of the fourth layer 13232 is 0.05 mm to 0.1 mm, that is, the minimum thickness of the fourth layer 13232 is 0.05 mm. In this way, after the fourth layer 13232 is melted, the weld 13121 between the first plate 131 and the second plate 132 can have sufficient penetration. The thickness of the fourth layer 13232 can be determined according to actual application requirements, and can be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, etc.

[0206] By adopting the above technical solution, the penetration requirement for welding the first plate body 131 and the second plate body 132 can be met, thereby effectively improving the welding effect between the first plate body 131 and the second plate body 132.

[0207] In some embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the second plate body 132 includes a second connecting layer 1323, the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer. 323 constitutes the entire second plate body 132, and the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232. The third layer 13231 and the fourth layer 13232 are stacked, and the third layer 13231 is a 1 series aluminum layer component or a 3 series aluminum layer component. The fourth layer 13232 has a second plate surface 1321, and the fourth layer 13232 is a 4 series aluminum layer component. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0208] In other embodiments, the first plate 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 has a first plate surface 1311, and the second layer 13132 is a 4 series aluminum layer. The second plate body 132 includes a second connecting layer 1323, and the second connecting layer 1323 constitutes the entire second plate body 132. The second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232. The third layer 13231 and the fourth layer 13232 are stacked. The third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer. The fourth layer 13232 has a second plate surface 1321. The fourth layer 13232 is a 4 series aluminum layer. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0209] In some other embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The second plate body 132 includes a second connecting layer 1323, and the second connecting layer 1323 constitutes the entire second plate body 132. The second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232. The third layer 13231 and the fourth layer 13232 are stacked, the third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer, the fourth layer 13232 has a second plate surface 1321, the fourth layer 13232 is a 4 series aluminum layer, and the first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0210] In some embodiments of the present application, please refer to Figures 11 and 12 together. The second plate body 132 also includes a second reinforcement layer 1322. The second reinforcement layer 1322 is stacked on the side of the second connecting layer 1323 facing away from the first plate body 131. At least part of the projection of the heat exchange channel 133 on the reference plane coincides with the projection of the second reinforcement layer 1322 on the reference plane.

[0211] The second reinforcement layer 1322 is a portion of the layer structure of the second plate 132, and the second connection layer 1323 is another portion of the layer structure of the second plate 132. It is understood that the second reinforcement layer 1322 is made of a high-strength metal material, which may include but is not limited to stainless steel, carbon steel, 5-series aluminum, 6-series aluminum, 7-series aluminum, etc. Compared with the second connection layer 1323, the second reinforcement layer 1322 has a greater structural strength, wherein the structural strength includes but is not limited to yield strength and tensile strength. For example, the yield strength of the second reinforcement layer 1322 is greater than 54 MPa, and the tensile strength of the second reinforcement layer 1322 is greater than 95 MPa.

[0212] On a reference plane perpendicular to the stacking direction of the first plate 131 and the second plate 132, at least a portion of the projection of the heat exchange channel 133 overlaps with a projection of the second reinforcement layer 1322. In other words, at least a portion of the heat exchange channel 133 is disposed opposite the second reinforcement layer 1322 in the stacking direction of the first plate 131 and the second plate 132. In some embodiments, on a reference plane perpendicular to the stacking direction of the first plate 131 and the second plate 132, the entire projection of the heat exchange channel 133 overlaps with a projection of the second reinforcement layer 1322. If an external force is applied to the portion of the heat exchange channel 133 opposite the second reinforcement layer 1322, the second reinforcement layer 1322 can provide support to the portion of the heat exchange channel 133 opposite the second reinforcement layer 1322 to resist the external force, thereby reducing the risk of deformation of the heat exchange channel 133.

[0213] By adopting the above technical solution, the structural strength of the heat exchange component 13 is further improved, thereby further reducing the risk of deformation of the heat exchange component 13.

[0214] In some embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second reinforcement layer 1322 and the second connecting layer 1323 are stacked, the second connecting layer 1323 has a second plate surface 1321, the second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer, and the first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0215] In other embodiments, the first plate 131 includes a first reinforcement layer 1312 and a first connection layer 1313, the first reinforcement layer 1312 and the first connection layer 1313 are stacked, the first connection layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 has a first plate surface 1311, the second layer 13132 is a 4-series aluminum layer component, the second plate body 132 includes a second reinforcement layer component 1322 and a second connecting layer component 1323, the second reinforcement layer component 1322 and the second connecting layer component 1323 are stacked, the second connecting layer component 1323 has a second plate surface 1321, the second connecting layer component 1323 is an integral component and the second connecting layer component 1323 is a 1-series aluminum layer component or a 3-series aluminum layer component, the first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0216] In some other embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second The reinforcing layer 1322 is stacked with the second connecting layer 1323, and the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232. The third layer 13231 and the fourth layer 13232 are stacked, and the third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer. The fourth layer 13232 has a second plate surface 1321, and the fourth layer 13232 is a 4 series aluminum layer. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0217] In some further embodiments, the first plate 131 includes a first reinforcement layer 1312 and a first connection layer 1313, the first reinforcement layer 1312 and the first connection layer 1313 are stacked, the first connection layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 has a first plate surface 1311, the second layer 13132 is a 4 series aluminum layer, and the second plate 1313 2 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second reinforcement layer 1322 and the second connecting layer 1323 are stacked, the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, the third layer 13231 and the fourth layer 13232 are stacked, the third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer, the fourth layer 13232 has a second plate surface 1321, the fourth layer 13232 is a 4 series aluminum layer, and the first plate surface 1311 is sealed to the second plate surface 1321.

[0218] In some further embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323. The second reinforcement layer 1322 and the second connecting layer 1323 are stacked, and the second connecting layer 1323 has a second plate surface 1321. The second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0219] In some further embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, and the second reinforcement layer 1322 and the second connecting layer 1323 are stacked. The second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, and the third layer 13231 and the fourth layer 13232 are stacked. The third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer. The fourth layer 13232 has a second plate surface 1321, and the fourth layer 13232 is a 4 series aluminum layer. The first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0220] In some embodiments of the present application, referring to FIG. 10 , the second plate body 132 further includes a second reinforcement layer 1322 , the second reinforcement layer 1322 having a second plate surface 1321 , and at least a portion of the projection of the heat exchange channel 133 on the reference plane coincides with the projection of the second reinforcement layer 1322 on the reference plane.

[0221] In some embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the second plate body 132 includes a second reinforcement layer 1322, the second reinforcement layer 1322 constitutes the entire second plate body 132, the second reinforcement layer 1322 has a second plate surface 1321, and the first plate surface 1311 is sealed and connected to the second plate surface 1321.

[0222] In other embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 has a first plate surface 1311, the second layer 13132 is a 4 series aluminum layer, the second plate body 132 includes a second reinforcement layer 1322, the second reinforcement layer 1322 constitutes the entire second plate body 132, the second reinforcement layer 1322 has a second plate surface 1321, and the first plate surface 1311 and the second plate surface 1321 are sealed and connected.

[0223] In some other embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The second plate body 132 includes a second reinforcement layer 1322, which constitutes the entire second plate body 132, and the second reinforcement layer 1322 has a second plate surface 1321. The first plate surface 1311 is sealed to the second plate surface 1321.

[0224] By adopting the above technical solution, not only the structural strength of the heat exchange component 13 is effectively improved, but also the structure of the heat exchange component 13 is effectively simplified.

[0225] In some embodiments of the present application, the second reinforcement layer 1322 includes at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

[0226] By adopting the above technical solution, the heat exchange component 13 can meet the yield strength requirements and the tensile strength requirements, thereby further reducing the risk of deformation of the heat exchange component 13.

[0227] In some embodiments of the present application, the thickness of the second reinforcement layer 1322 is 0.1 mm-0.8 mm.

[0228] The thickness of the second reinforcement layer 1322 refers to its dimension along the stacking direction of the first plate 131 and the second plate 132. The thickness of each portion of the second reinforcement layer 1322 may be the same or different. It should be noted that when the second reinforcement layer 1322 has at least two portions with different thicknesses, the thickness of each portion of the second reinforcement layer 1322 is within the range of 0.1 mm to 0.8 mm. The thickness of the second reinforcement layer 1322 can be determined based on actual application requirements, and may specifically be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.

[0229] In some embodiments, the second plate 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, and the second reinforcement layer 1322 and the second connecting layer 1323 are stacked. The second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, and the third layer 13231 and the fourth layer 13232 are stacked. The fourth layer 13232 has a second plate surface 1321, the third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer, the fourth layer 13232 is a 4 series aluminum layer, the second reinforcement layer 1322 is a stainless steel layer or a carbon steel layer, the thickness of the second reinforcement layer 1322 is 0.1mm-0.5mm, the thickness of the third layer 13231 is 0.25mm-0.85mm, and the thickness of the fourth layer 13232 is 0.05mm-0.1mm.

[0230] In other embodiments, the second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second reinforcement layer 1322 and the second connecting layer 1323 are stacked, the second connecting layer 1323 has a second plate surface 1321, the second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer, the second reinforcement layer 1322 is a stainless steel layer or a carbon steel layer, the thickness of the second reinforcement layer 1322 is 0.1mm-0.8mm, and the thickness of the third layer 13231 is 0.2mm-0.9mm.

[0231] In some other embodiments, the second plate 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second reinforcement layer 1322 and the second connecting layer 1323 are stacked, the second connecting layer 1323 includes a third layer 13231 and a fourth layer 13232, the third layer 13231 and the fourth layer 13232 are stacked, the fourth layer 13232 has a second plate surface 1321, the third layer 13231 is a 1 series aluminum layer or a 3 series aluminum layer, the fourth layer 13232 is a 4 series aluminum layer, the second reinforcement layer 1322 is a 5 series aluminum layer, a 6 series aluminum layer or a 7 series aluminum layer, the thickness of the second reinforcement layer 1322 is 0.1mm-0.8mm, the thickness of the third layer 13231 is 0.1mm-0.85mm, and the thickness of the fourth layer 13232 is 0.05mm-0.1mm.

[0232] In some further embodiments, the second plate body 132 includes a second reinforcement layer 1322 and a second connecting layer 1323, the second reinforcement layer 1322 and the second connecting layer 1323 are stacked, the second connecting layer 1323 has a second plate surface 1321, the second connecting layer 1323 is an integral component and the second connecting layer 1323 is a 1 series aluminum layer or a 3 series aluminum layer, the second reinforcement layer 1322 is an aluminum layer, a 6 series aluminum layer or a 7 series aluminum layer, the thickness of the second reinforcement layer 1322 is 0.1 mm-0.8 mm, and the thickness of the third layer 13231 is 0.2 mm-0.9 mm.

[0233] In some further embodiments, the second plate body 132 includes a second reinforcement layer 1322, which constitutes the entire second plate body 132, and the second reinforcement layer 1322 has a second plate surface 1321. The second reinforcement layer 1322 is a stainless steel layer or a carbon steel layer, and the thickness of the second reinforcement layer 1322 is 0.5mm-0.8mm.

[0234] The minimum thickness of the second reinforcement layer 1322 is 0.1 mm, so that the heat exchange component 13 meets the strength requirements. The maximum thickness of the second reinforcement layer 1322 is 0.8 mm, which can optimize the weight and volume of the heat exchange component 13, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0235] In some embodiments of the present application, the first reinforcement layer 1312 includes at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

[0236] By adopting the above technical solution, the heat exchange component 13 can meet the yield strength requirements and the tensile strength requirements, thereby further reducing the risk of deformation of the heat exchange component 13.

[0237] In some embodiments of the present application, the thickness of the first reinforcement layer 1312 is 0.1 mm-0.8 mm.

[0238] The thickness of the first reinforcement layer 1312 refers to its dimension along the stacking direction of the first plate 131 and the second plate 132. The thickness of each portion of the first reinforcement layer 1312 may be the same or different. It should be noted that when the first reinforcement layer 1312 has at least two portions with different thicknesses, the thickness of each portion of the first reinforcement layer 1312 is within the range of 0.1 mm to 0.8 mm. The thickness of the first reinforcement layer 1312 can be determined based on actual application requirements, and may specifically be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc.

[0239] In some embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the second layer 13132 has a first plate surface 1311, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 is a 4 series aluminum layer, the first reinforcement layer 1312 is a stainless steel layer or a carbon steel layer, the thickness of the first reinforcement layer 1312 is 0.1mm-0.5mm, the thickness of the first layer 13131 is 0.25mm-0.85mm, and the thickness of the second layer 13132 is 0.05mm-0.1mm.

[0240] In other embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the first reinforcement layer 1312 is a stainless steel layer or a carbon steel layer, the thickness of the first reinforcement layer 1312 is 0.1mm-0.8mm, and the thickness of the first layer 13131 is 0.2mm-0.9mm.

[0241] In some other embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 includes a first layer 13131 and a second layer 13132, the first layer 13131 and the second layer 13132 are stacked, the second layer 13132 has a first plate surface 1311, the first layer 13131 is a 1 series aluminum layer or a 3 series aluminum layer, the second layer 13132 is a 4 series aluminum layer, the first reinforcement layer 1312 is a 5 series aluminum layer, a 6 series aluminum layer or a 7 series aluminum layer, the thickness of the first reinforcement layer 1312 is 0.1mm-0.8mm, the thickness of the first layer 13131 is 0.1mm-0.85mm, and the thickness of the second layer 13132 is 0.05mm-0.1mm.

[0242] In some further embodiments, the first plate body 131 includes a first reinforcement layer 1312 and a first connecting layer 1313, the first reinforcement layer 1312 and the first connecting layer 1313 are stacked, the first connecting layer 1313 has a first plate surface 1311, the first connecting layer 1313 is an integral component and the first connecting layer 1313 is a 1 series aluminum layer or a 3 series aluminum layer, the first reinforcement layer 1312 is an aluminum layer, a 6 series aluminum layer or a 7 series aluminum layer, the thickness of the first reinforcement layer 1312 is 0.1 mm-0.8 mm, and the thickness of the first layer 13131 is 0.2 mm-0.9 mm.

[0243] In some further embodiments, the first plate body 131 includes a first reinforcement layer 1312, which constitutes the entire first plate body 131, and the first reinforcement layer 1312 has a first plate surface 1311. The first reinforcement layer 1312 is a stainless steel layer or a carbon steel layer, and the thickness of the first reinforcement layer 1312 is 0.5mm-0.8mm.

[0244] The minimum thickness of the first reinforcement layer 1312 is 0.1 mm, so that the heat exchange component 13 meets the strength requirements. The maximum thickness of the first reinforcement layer 1312 is 0.8 mm, which can optimize the weight and volume of the heat exchange component 13, thereby effectively improving the energy density of the battery 100 using the above-mentioned heat exchange component 13.

[0245] In some embodiments of the present application, a first anti-corrosion layer (not shown) is provided on the first plate surface 1311 .

[0246] In some other embodiments of the present application, a second anti-corrosion layer (not shown) is provided on the second plate surface 1321 .

[0247] In some other embodiments of the present application, a first anti-corrosion layer is provided on the first plate surface 1311 , and a second anti-corrosion layer is provided on the second plate surface 1321 .

[0248] The first and second anti-corrosion layers are layered structures with corrosion protection, designed to mitigate the risk of heat exchange medium corroding the first and second plates 131 and 132. The first anti-corrosion layer can be applied to the first plate surface 1311 using methods such as electroplating, plastic spraying, or coating. Similarly, the second anti-corrosion layer can be applied to the second plate surface 1321 using methods such as electroplating, plastic spraying, or coating. The first and second anti-corrosion layers can be, but are not limited to, nickel layers, aluminum-silicon layers, zinc-nickel layers, and the like.

[0249] By adopting the above technical solution, the risk of the first plate 131 and the second plate 132 contacting the heat exchange medium is effectively reduced, thereby effectively improving the situation where the first plate 131 and the second plate 132 are corroded by the heat exchange medium.

[0250] In some embodiments of the present application, a first heat-resistant layer (not shown) is provided on the first plate surface 1311 .

[0251] In some other embodiments of the present application, a second heat-resistant layer (not shown) is provided on the second plate surface 1321 .

[0252] In some other embodiments of the present application, a first heat-resistant layer is provided on the first plate surface 1311 , and a second heat-resistant layer is provided on the second plate surface 1321 .

[0253] The first and second heat-resistant layers are heat-insulating layers that reduce heat transfer into the interior of the first and second plates 131, 132, thereby reducing the risk of delamination between the first and second plates 131, 132. The first heat-resistant layer can be applied to the first plate surface 1311 using a process such as electroplating, spraying, or coating. Similarly, the second heat-resistant layer can be applied to the second plate surface 1321 using a process such as electroplating, spraying, or coating.

[0254] In some embodiments, the first heat-resistant layer and the first anti-corrosion layer are a composite layer structure, and the second heat-resistant layer and the second anti-corrosion layer are a composite layer structure.

[0255] By adopting the above technical solution, when the first plate body 131 and the second plate body 132 are welded, heat can be blocked from being transferred from the first plate surface 1311 to the various layer structures of the first plate body 131 and from the second plate surface 1321 to the various layer structures of the second plate body 132, thereby effectively improving the thermal expansion of the first plate body 131 and the second plate body 132, and effectively reducing the risk of stratification of the first plate body 131 and the second plate body 132.

[0256] In some embodiments of the present application, please refer to FIG. 7 to FIG. 9 , the depth H of the heat exchange channel 133 is 3 mm-3.5 mm.

[0257] The depth H of the heat exchange channel 133 refers to the dimension of the heat exchange channel 133 along the stacking direction of the first plate 131 and the second plate 132. The depth H of the heat exchange channel 133 can be determined according to actual application requirements, and can be 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, etc.

[0258] In the related art, if the depth H of the heat exchange channel 133 is too large, the heat exchange component 13 is prone to cracking during the molding process of the heat exchange channel 133. By adopting the above technical solution, the risk of the heat exchange component 13 cracking during the molding process of the heat exchange channel 133 is effectively reduced.

[0259] In some embodiments of the present application, please refer to FIG. 7 to FIG. 9 , the width W of the heat exchange channel 133 is 3 mm-5 mm.

[0260] The width W of the heat exchange channel 133 refers to the dimension of the heat exchange channel 133 perpendicular to the stacking direction of the first plate 131 and the second plate 132 and the extension direction of the heat exchange channel 133. The width W of the heat exchange channel 133 can be determined based on actual application requirements and can be 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, etc.

[0261] In related technologies, if the width W of the heat exchange channel 133 is too large, the heat exchange component 13 is prone to cracking during the molding process of the heat exchange channel 133. By adopting the above technical solution, the risk of the heat exchange component 13 cracking during the molding process of the heat exchange channel 133 is effectively reduced.

[0262] In some embodiments of the present application, please refer to FIG. 7 to FIG. 9 . The wall of the heat exchange channel 133 has a corner 1331 , and the corner 1331 is a rounded structure.

[0263] It should be noted that, when the heat exchange channel 133 is provided on the first plate surface 1311, the corner 1331 can be a portion of the first plate body 131 for connecting the side wall of the heat exchange channel 133 and the bottom wall of the first plate body 131, or can be a portion of the first plate body 131 for connecting the side wall of the heat exchange channel 133 and the top wall of the first plate body 131, wherein the bottom wall of the first plate body 131 refers to the wall of the first plate body 131 farthest from the second plate body 132 along the stacking direction of the first plate body 131 and the second plate body 132, that is, the bottom wall of the heat exchange channel 133, and the top wall of the first plate body 131 refers to the wall of the first plate body 131 closest to the second plate body 132 along the stacking direction of the first plate body 131 and the second plate body 132 wall; when the heat exchange channel 133 is arranged on the second plate surface 1321, the corner 1331 can be a part of the second plate body 132 for connecting the side wall of the heat exchange channel 133 and the bottom wall of the second plate body 132, or it can be a part of the second plate body 132 for connecting the side wall of the heat exchange channel 133 and the top wall of the second plate body 132, wherein the bottom wall of the second plate body 132 refers to the wall of the second plate body 132 farthest from the first plate body 131 along the stacking direction of the first plate body 131 and the second plate body 132, that is, the bottom wall of the heat exchange channel 133, and the top wall of the second plate body 132 refers to the wall of the second plate body 132 closest to the first plate body 131 along the stacking direction of the first plate body 131 and the second plate body 132.

[0264] By adopting the above technical solution, the stress borne by the heat exchange component 13 during the molding process of the heat exchange channel 133 is effectively reduced, thereby effectively reducing the risk of cracking of the heat exchange component 13.

[0265] In some embodiments of the present application, please refer to FIG. 7 to FIG. 9 , the radius R of the rounded corner structure is 2 mm-8 mm.

[0266] The radius R of the rounded corner structure can be determined according to actual application requirements, and can be specifically 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, etc.

[0267] By adopting the above technical solution, the risk of cracking of the heat exchange component 13 during the molding process of the heat exchange channel 133 is further reduced.

[0268] In the second aspect, referring to FIG. 2 , an embodiment of the present application further provides a box 10 , comprising a frame and a heat exchange assembly 13 as described in any of the above embodiments, wherein the frame is connected to the heat exchange assembly 13 to define an accommodation space for accommodating a battery cell 20 .

[0269] The box body 10 provided in the embodiment of the present application effectively improves the structural strength of the box body 10 because it adopts the heat exchange component 13 described in any of the above embodiments.

[0270] In some embodiments of the present application, the first reinforcement layer 1312 is welded to the frame, and the material of the first reinforcement layer 1312 is the same as that of the frame.

[0271] In some embodiments, the first reinforcement layer 1312 is a steel layer, the frame is a steel frame, and the first reinforcement layer 1312 is welded to the frame.

[0272] By adopting the above technical solution, the connection strength between the heat exchange component 13 and the frame is effectively improved.

[0273] In some embodiments of the present application, please refer to Figures 13 and 14 together. At least a portion of the first reinforcement layer 1312 extends out of the side of the second plate 132 to form a welding portion 13121, and the welding portion 13121 is welded to the frame on the side facing the second plate 132.

[0274] In some embodiments, two opposite sides of the first reinforcement layer 1312 extend out of the sides of the second plate 132 to form two welding portions 13121 , and the two welding portions 13121 are welded to the frame.

[0275] In other embodiments, the peripheral side of the first reinforcement layer 1312 extends out from the side of the second plate 132 to form a welding portion 13121 with a ring-shaped structure, and the welding portion 13121 is welded to the frame.

[0276] It should be noted that, when the first plate 131 includes the first connecting layer 1313, and the second plate 132 includes the second connecting layer 1323 but does not include the second reinforcing layer 1322, the sides of the first connecting layer 1313 and the sides of the second connecting layer 1323 can be peeled off so that the sides of the first reinforcing layer 1312 extend out of the sides of the second plate 132 to form the welded portion 13121. Alternatively, when the first plate 131 does not include the first connecting layer 1313, and the second plate 132 includes the second connecting layer 1323 but does not include the second reinforcing layer 1322, the sides of the second connecting layer 1323 can be peeled off so that the sides of the first reinforcing layer 1312 extend out of the sides of the second plate 132 to form the welded portion 13121.

[0277] By adopting the above technical solution, it is convenient to connect the heat exchange component 13 to the frame.

[0278] In the third aspect, please refer to Figure 2. The embodiment of the present application also provides a battery 100, including a battery cell 20 and the box body 10 described in any of the above embodiments. The battery cell 20 is accommodated in the accommodating space, and the heat exchange component 13 is used to adjust the temperature of the battery cell 20.

[0279] The battery 100 provided in the embodiment of the present application effectively improves the structural strength of the battery 100 by adopting the box body 10 described in any of the above embodiments.

[0280] In the fourth aspect, please refer to FIG1 , an embodiment of the present application further provides an electrical device including the above-mentioned battery 100 .

[0281] The electrical equipment provided in the embodiment of the present application effectively improves the structural strength of the electrical equipment due to the use of the above-mentioned battery 100.

[0282] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A heat exchange component, characterized in that: The heat exchange component comprises: A first plate body having a first plate surface, wherein the first plate body includes a first reinforcement layer; a second plate body, stacked with the first plate body, the second plate body having a second plate surface; A heat exchange channel is provided on the first plate surface and / or the second plate surface, and the first plate surface is sealed to the second plate surface to close the heat exchange channel, and at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the first reinforcement layer on the reference plane, wherein the reference plane is perpendicular to the stacking direction of the first plate body and the second plate body.

2. The heat exchange assembly according to claim 1, characterized in that: The first plate body further includes a first connecting layer stacked on a side of the first reinforcing layer facing the second plate body, and the first connecting layer has the first plate surface.

3. The heat exchange assembly according to claim 2, characterized in that: The first connecting layer is welded to the second plate.

4. The heat exchange assembly according to claim 2 or 3, characterized in that: The first connecting layer is an aluminum layer.

5. The heat exchange assembly according to claim 4, characterized in that: The first connecting layer includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

6. The heat exchange assembly according to any one of claims 2 to 5, characterized in that: The thickness of the first connecting layer is 0.2 mm to 0.9 mm.

7. The heat exchange assembly according to any one of claims 2 to 6, characterized in that: The first connecting layer comprises a first layer and a second layer. The first layer is stacked between the first reinforcing layer and the second layer. The second layer has the first plate surface. The melting point of the second layer is lower than that of the first layer.

8. The heat exchange assembly according to claim 7, characterized in that: The first layer is a 3-series aluminum layer or a 1-series aluminum layer, and the second layer is a 4-series aluminum layer.

9. The heat exchange assembly according to claim 7 or 8, characterized in that: The thickness of the first layer is 0.1 mm to 0.85 mm.

10. The heat exchange assembly according to any one of claims 7 to 9, characterized in that: The thickness of the second layer is 0.05 mm to 0.1 mm.

11. The heat exchange assembly according to claim 1, characterized in that: The first reinforcement layer has the first panel surface.

12. The heat exchange assembly according to any one of claims 1 to 11, characterized in that: The second plate body includes a second connecting layer, and the second connecting layer has the second plate surface.

13. The heat exchange assembly according to claim 12, characterized in that: The second connecting layer is welded to the first plate.

14. The heat exchange assembly according to claim 12 or 13, characterized in that: The second connecting layer is an aluminum layer.

15. The heat exchange assembly according to claim 14, characterized in that: The second connecting layer includes at least one of a 1-series aluminum layer, a 3-series aluminum layer, and a 4-series aluminum layer.

16. The heat exchange assembly according to any one of claims 12 to 15, characterized in that: The thickness of the second connecting layer is 0.2 mm to 0.9 mm.

17. The heat exchange assembly according to any one of claims 12 to 16, characterized in that: The second connecting layer includes a third layer and a fourth layer stacked together. The fourth layer is arranged on the side of the third layer facing the first plate body. The fourth layer has the second plate surface. The melting point of the fourth layer is lower than that of the third layer.

18. The heat exchange assembly according to claim 17, characterized in that: The third layer is a 3-series aluminum layer or a 1-series aluminum layer, and the fourth layer is a 4-series aluminum layer.

19. The heat exchange assembly according to claim 17 or 18, characterized in that: The thickness of the third layer is 0.1 mm to 0.85 mm.

20. The heat exchange assembly according to any one of claims 17 to 19, characterized in that: The thickness of the fourth layer is 0.05 mm to 0.1 mm.

21. The heat exchange assembly according to any one of claims 12 to 20, characterized in that: The second plate body also includes a second reinforcement layer, which is stacked on the side of the second connecting layer facing away from the first plate body, and at least part of the projection of the heat exchange channel on the reference plane coincides with the projection of the second reinforcement layer on the reference plane.

22. The heat exchange assembly according to any one of claims 1 to 11, characterized in that: The second plate body further includes a second reinforcement layer having the second plate surface, and at least a portion of a projection of the heat exchange channel on the reference surface coincides with a projection of the second reinforcement layer on the reference surface.

23. The heat exchange assembly according to claim 21 or 22, characterized in that: The second reinforcement layer comprises at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

24. The heat exchange assembly according to claim 23, characterized in that The thickness of the second reinforcement layer is 0.1 mm to 0.8 mm.

25. The heat exchange assembly according to any one of claims 1 to 24, characterized in that: The first reinforcement layer comprises at least one of a stainless steel layer, a carbon steel layer, a 5 series aluminum layer, a 6 series aluminum layer, and a 7 series aluminum layer.

26. The heat exchange assembly according to claim 25, characterized in that The thickness of the first reinforcement layer is 0.1 mm to 0.8 mm.

27. The heat exchange assembly according to any one of claims 1 to 26, characterized in that: A first anti-corrosion layer is provided on the first plate surface; and / or, A second anti-corrosion layer is provided on the second plate surface.

28. The heat exchange assembly according to any one of claims 1 to 27, characterized in that: A first heat-resistant layer is provided on the first plate surface; and / or, A second heat-resistant layer is provided on the second plate surface.

29. The heat exchange assembly according to any one of claims 1 to 28, characterized in that: The depth of the heat exchange channel is 3mm-3.5mm.

30. The heat exchange assembly according to any one of claims 1 to 29, characterized in that: The width of the heat exchange channel is 3mm-5mm.

31. The heat exchange assembly according to any one of claims 1 to 30, characterized in that: The wall of the heat exchange channel has a corner portion, and the corner portion is a rounded structure.

32. The heat exchange assembly according to claim 31, characterized in that The radius of the rounded corner structure is 2mm-8mm.

33. A box, characterized in that: The box body includes a frame and the heat exchange assembly according to any one of claims 1 to 32, wherein the frame is connected to the heat exchange assembly to define an accommodating space for accommodating a battery cell.

34. The box according to claim 33, characterized in that The first reinforcement layer is welded to the frame, and the material of the first reinforcement layer is the same as that of the frame.

35. The box according to claim 34, characterized in that At least a portion of the first reinforcement layer extends out from a side of the second plate body to form a welding portion, and the side of the welding portion facing the second plate body is welded to the frame.

36. A battery, characterized in that: The battery includes a battery cell and a box body as described in any one of claims 33-35, the battery cell is accommodated in the accommodation space, and the heat exchange component is used to adjust the temperature of the battery cell.

37. An electrical device, characterized in that: The electric device includes the battery as claimed in claim 36.

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