Battery device, thermal management assembly and electric device

Abstract

The utility model relates to a battery device, a heat management assembly and a power utilization device. The battery device comprises a box body, a battery monomer and the heat management assembly, the box body is provided with an accommodating space; the battery monomers are accommodated in the accommodating space; the heat management assembly is connected with the box body; the thermal management assembly includes a first carrier and a thermal management component. The first bearing part is positioned on one side of the battery monomer along the first direction; the heat management part is arranged on one side, deviating from the battery monomers, of the first bearing part along a first direction; the first bearing part and the second bearing part jointly form a fluid channel capable of containing a fluid medium; the heat management part comprises a connecting layer, a first sacrificial layer and a second bearing plate which are stacked in the first direction. One side, deviating from the first sacrificial layer, of the connecting layer is fixedly connected with the first bearing part; wherein the electrode potential of the first sacrificial layer is lower than that of the second bearing plate. When the connecting layer is damaged, the fluid medium preferentially reacts with the first sacrificial layer, so that the second bearing plate is protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery thermal management, in particular to a battery device, a thermal management assembly and an electric device. BACKGROUND

[0002] In the use process of the battery, in order to ensure the reliability and service life in the use process, it needs to be cooled and heat dissipated. In the related technology, the battery is usually cooled and heat dissipated by the thermal management assembly provided with cooling liquid. In order to meet the requirements of the cooling liquid on heat dissipation performance, low-temperature fluidity, boiling point and the like, it is usually composed of base liquid (such as ethylene glycol, propylene glycol and the like), water and various additives (such as preservatives, corrosion inhibitors, defoamers and the like). However, in the long-term use process, the cooling liquid will slowly react chemically with the pipe wall of the fluid channel of the thermal management assembly, thereby finally producing corrosion phenomenon. This corrosion will damage the structural integrity of the thermal management assembly, cause the cooling liquid to leak, and affect the normal work of the heat dissipation system. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the present application provides a battery device, a thermal management assembly and an electric device, which can alleviate the phenomenon that the cooling liquid corrodes the pipe wall of the fluid channel of the thermal management assembly, is beneficial to improve the service life of the thermal management assembly, and reduce the risk of liquid leakage.

[0004] In a first aspect, the present application provides a battery device, which comprises a box body, a battery monomer and a thermal management assembly. The box body is configured with an accommodation space; the battery monomer is contained in the accommodation space; the thermal management assembly is connected with the box body; the thermal management assembly comprises a first bearing part and a thermal management part. The first bearing part is located at one side of the battery monomer along a first direction; the thermal management part is arranged at the side of the first bearing part away from the battery monomer along the first direction; and the thermal management part and the first bearing part jointly configure a fluid channel capable of containing fluid medium; the thermal management part comprises a connecting layer, a first sacrificial layer and a second bearing plate which are sequentially stacked along the first direction; the side of the connecting layer away from the first sacrificial layer is fixedly connected with the first bearing part; and the electrode potential of the first sacrificial layer is lower than the electrode potential of the second bearing plate.

[0005] The battery device provided by the embodiments of the present application is formed by the heat management component through the connection layer, the first sacrificial layer and the second bearing plate which are stacked, and the electrode potential of the first sacrificial layer is lower than the electrode potential of the second bearing plate. Therefore, when the fluid medium flows in the fluid channel, especially when the fluid medium is low-conductivity coolant with less corrosion inhibitor, after the heat management component is used for a long time, when the connection layer is damaged, the fluid medium will contact the first sacrificial layer and even the second bearing plate, and the fluid medium will preferentially react with the first sacrificial layer, thereby protecting the second bearing plate, reducing the possibility of corrosion and leakage of the second bearing plate, and improving the service life of the heat management component, and effectively ensuring the stability of the heat management component in the thermal management of the battery monomer.

[0006] In some embodiments, the electrode potential of the first sacrificial layer is lower than the electrode potential of the connection layer. Since the electrode potential of the first sacrificial layer is lower than the electrode potential of the connection layer, when the coolant flows in the fluid channel, especially when the coolant is low-conductivity coolant with less corrosion inhibitor, after the heat management component is used for a long time, when the connection layer is damaged, the coolant will contact the first sacrificial layer, and the coolant will preferentially react with the first sacrificial layer, thereby protecting the connection layer, reducing the possibility of further corrosion of the connection layer, and effectively ensuring the connection strength of the heat management component and the first bearing.

[0007] In some embodiments, the thickness h1 of at least part of the heat management component and the thickness h2 of at least part of the first sacrificial layer satisfy the condition: 3%h1≤h2≤17%h1.

[0008] In some embodiments, the thickness h1 of at least part of the heat management component and the thickness h2 of at least part of the first sacrificial layer satisfy the condition: 3%h1≤h2≤17%h1.

[0009] In some embodiments, the thickness h1 of at least part of the heat management component and the thickness h2 of at least part of the first sacrificial layer satisfy the condition: 7%h1≤h2≤13%h1. By setting the thickness h2 of at least part of the first sacrificial layer to be greater than or equal to 7% of the thickness h1 of at least part of the heat management component and less than or equal to 13% of the thickness h1 of at least part of the heat management component, the thickness ratio of the first sacrificial layer to the heat management component is relatively high, thereby effectively protecting the connection layer and the second bearing plate within a certain shelf life, meeting certain protection time requirements, and not easily causing waste of the first sacrificial layer material.

[0010] In some embodiments, the heat management component further comprises a second sacrificial layer, the second sacrificial layer is arranged on the side of the second carrier plate away from the first sacrificial layer, and the electrode potential of the second sacrificial layer is lower than the electrode potential of the second carrier plate. By arranging the second sacrificial layer on the side of the second carrier plate away from the first sacrificial layer, the side of the second carrier plate away from the first sacrificial layer can be protected by the second sacrificial layer to reduce the possibility of corrosion of the second carrier plate by water vapor in the air, so that both sides of the second carrier plate in the first direction can be protected.

[0011] In some embodiments, the material of the first sacrificial layer comprises any one of an aluminum-zinc alloy, a zinc-aluminum-magnesium alloy, and a zinc-iron alloy. By setting the material of the first sacrificial layer as any one of an aluminum-zinc alloy, a zinc-aluminum-magnesium alloy, and a zinc-iron alloy, the selection of the material of the first sacrificial layer is more extensive, and can be selected according to different use scenarios and requirements.

[0012] In some embodiments, the material of the second sacrificial layer comprises at least one of an aluminum-zinc alloy, a zinc-aluminum-magnesium alloy, and a zinc-iron alloy. By setting the material of the second sacrificial layer as any one of an aluminum-zinc alloy, a zinc-aluminum-magnesium alloy, and a zinc-iron alloy, the selection of the material of the second sacrificial layer is more extensive, and can be selected according to different use scenarios and requirements.

[0013] In some embodiments, the first carrier comprises a first carrier plate, and the side of the first carrier plate away from the battery monomer is connected with the connecting layer. The side of the first carrier plate away from the battery monomer is connected with the connecting layer, and the side of the first carrier plate away from the connecting layer can be used to carry the battery monomer, so as to perform heat management operation on the battery monomer.

[0014] In some embodiments, the first carrier further comprises a third sacrificial layer; the third sacrificial layer is arranged on the side of the first carrier plate close to the connecting layer and is fixedly connected with the first carrier plate; and the electrode potential of the third sacrificial layer is lower than the electrode potential of the first carrier plate. By arranging the third sacrificial layer on the side of the first carrier plate close to the connecting layer, the side of the first carrier plate close to the cooling liquid can be protected by the third sacrificial layer, reducing the possibility of chemical corrosion of the first carrier plate with the cooling liquid, thereby protecting the first carrier plate and improving the corrosion resistance of the pipe wall of the fluid channel of the heat management component, prolonging the service life of the first carrier plate.

[0015] In some embodiments, the thermal management assembly further comprises an insulation layer; the insulation layer is arranged on the side of the first carrier away from the connecting layer and fixedly connected with the first carrier; the battery cell is insulatedly connected with the first carrier through the insulation layer. By arranging the insulation layer on the side of the first carrier away from the connecting layer, the battery cell mounted on the first surface of the first carrier can be insulated, so that the thermal management assembly is less likely to conduct the leakage current from the battery cell, and the reliability of the thermal management assembly is higher; and the first surface of the first carrier can also be protected by the insulation layer, reducing the possibility of corrosion damage of the first surface.

[0016] In some embodiments, the thermal management component comprises a plurality of spacing parts and a plurality of connecting parts; the spacing parts are arranged in the first direction and spaced apart from the first carrier; the connecting parts are connected between adjacent two spacing parts; the connecting parts are fixedly connected with the first carrier; and the gap between the spacing parts and the first carrier forms the fluid channel. By arranging the thermal management component as a plurality of spacing parts and a plurality of connecting parts, and forming the fluid channel through the gap between the spacing parts and the first carrier, the formation of the fluid channel is relatively simple and convenient, and easy to process and manufacture.

[0017] In a second aspect, the present application also provides a thermal management assembly comprising a first carrier and a thermal management component; the first carrier and the thermal management component are arranged in sequence along a first direction; the thermal management component is arranged on the side of the first carrier away from the battery cell along the first direction; and the first carrier and the thermal management component jointly form a fluid channel capable of containing a cooling medium; the thermal management component comprises a connecting layer, a first sacrificial layer and a second carrier plate arranged in sequence along the first direction; the side of the connecting layer away from the first sacrificial layer is fixedly connected with the first carrier; and the electrode potential of the first sacrificial layer is lower than the electrode potential of the second carrier plate.

[0018] When the thermal management assembly is mounted on the box of the battery device to manage the battery cell, since the thermal management component is formed by the laminated arrangement of the connecting layer, the first sacrificial layer and the second carrier plate, and the electrode potential of the first sacrificial layer is lower than the electrode potential of the second carrier plate, when the cooling liquid flows in the fluid channel, especially when the cooling liquid is a low-conductivity cooling liquid with less corrosion inhibitor, after the thermal management assembly is used for a long time, when the connecting layer is damaged, at this time the cooling liquid will contact the first sacrificial layer and even the second carrier plate, and the cooling liquid will preferentially react with the first sacrificial layer, thereby protecting the second carrier plate, reducing the possibility of corrosion and leakage of the second carrier plate, and effectively ensuring the thermal management stability of the thermal management assembly to the battery cell.

[0019] In a third aspect, the application also provides a power-using device comprising the battery device of any of the above embodiments. By using the battery device disclosed in the application to form a power supply system of the power-using device, the phenomenon that the fluid channel wall of the thermal management component of the battery device is corroded by the cooling liquid during use can be alleviated, the service life of the thermal management component can be improved, the risk of liquid leakage can be reduced, and the stability of the thermal management component in heat management of the battery monomer can be effectively ensured.

[0020] The above description is only a summary of the technical solutions of the application. In order to enable one skilled in the art to better understand the technical means of the application and implement it according to the contents of the description, and in order to enable the above and other purposes, characteristics and advantages of the application to be more apparent and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, the same reference numerals are used throughout the several views that follow. In the drawings:

[0022] Figure 1 The structural schematic diagram of the power-using device provided by some embodiments of the application is shown.

[0023] Figure 2 The structural schematic diagram of the power-using device provided by some embodiments of the application is shown. Figure 1 The explosion schematic diagram of the box and the battery monomer in the battery device is shown.

[0024] Figure 3 The schematic diagram of the thermal management component in the battery device provided by some embodiments of the application is shown.

[0025] Figure 4 The schematic diagram of the thermal management component provided by some embodiments of the application is shown. Figure 3 The top view of the thermal management component is shown.

[0026] Figure 5 The sectional view of the thermal management component at A-A is shown. Figure 3 The sectional view of the thermal management component at A-A is shown.

[0027] Figure 6 The partial enlarged view of B of the thermal management component provided by some embodiments of the application is shown. Figure 5 The partial enlarged view of B of the thermal management component provided by some embodiments of the application is shown.

[0028] Figure 7 The partial enlarged view of B of the thermal management component provided by some embodiments of the application is shown. Figure 5 The partial enlarged view of B of the thermal management component provided by some embodiments of the application is shown.

[0029] The reference numerals in the specific embodiments are as follows:

[0030] 10000 - vehicle;

[0031] 1000 - battery device; 1100 - case; 1110 - accommodation space; 1120 - first portion; 1130 - second portion; 1200 - battery cell;

[0032] 2000 - controller;

[0033] 3000 - motor;

[0034] 4000 - thermal management assembly;

[0035] 100 - first carrier; 101 - first face; 102 - second face; 110 - first carrier plate; 120 - third sacrificial layer;

[0036] 200 - thermal management component; 201 - fluid passage; 202 - spacing portion; 203 - connecting portion; 210 - connecting layer; 220 - first sacrificial layer; 230 - second carrier plate; 240 - second sacrificial layer;

[0037] 300 - insulating layer. DETAILED DESCRIPTION

[0038] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0041] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0042] In the description of the embodiments of the application, the term“and / or” only means an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character“ / ” herein generally means that the front and rear associated objects are in an“or” relationship.

[0043] In the description of the embodiments of the application, the term“a plurality of” refers to two or more (including two), and similarly, “a plurality of groups” refers to two or more groups (including two groups), and “a plurality of pieces” refers to two or more pieces (including two pieces).

[0044] In the description of the embodiments of the application, the technical terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the application.

[0045] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms“mounting”,“connection”,“connection”,“fixing” and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0046] At present, from the development of market situation, the application of power battery is more and more extensive. The power battery is not only applied to the energy storage power supply system of water power, fire power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0047] When a large power battery pack composed of some power batteries is installed in an electric vehicle or a military equipment device, in order to ensure the safety performance and service life during use, it needs to be thermally managed and cooled and radiated by a thermal management assembly. In order to meet the requirements of the cooling liquid for heat dissipation performance, low temperature fluidity, boiling point and the like, it is usually composed of a base liquid (such as ethylene glycol, propylene glycol and the like), water and various additives (such as preservatives, corrosion inhibitors, defoamers and the like). In order to improve the reliability of the battery device, in the related art, a low-conductivity coolant with less corrosion inhibitor appears, and the low-conductivity coolant can cause a slow chemical reaction between the thermal management assembly and the pipe wall of the fluid channel of the thermal management assembly during long-term use, thereby eventually causing corrosion. This corrosion not only destroys the structural integrity of the thermal management assembly, causing the cooling liquid to leak and affecting the normal operation of the heat dissipation system.

[0048] Based on the above considerations, in order to alleviate the phenomenon of corrosion of the cooling liquid to the pipe wall of the fluid channel of the thermal management assembly, improve the service life of the thermal management assembly, and reduce the risk of liquid leakage. The battery device is designed to add a sacrificial layer to the pipe wall of the fluid channel, so that the pipe wall of the fluid channel can be protected by the sacrificial layer, thereby reducing the phenomenon of corrosion of the cooling liquid to the pipe wall of the fluid channel of the thermal management assembly, which is conducive to improving the service life of the thermal management assembly and reducing the risk of liquid leakage.

[0049] The following embodiments are described for convenience with a vehicle 10000 as an example of a power utilization device according to an embodiment of the present application.

[0050] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 10000 provided by some embodiments of the present application is shown. The vehicle 10000 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile or a range extended automobile, etc. The vehicle 10000 is internally provided with a battery, which can be arranged at the bottom or the head or the tail of the vehicle 10000. The battery can be used for power supply of the vehicle 10000, for example, the battery can be used as an operating power supply of the vehicle 10000. The vehicle 10000 can also include a controller 2000 and a motor 3000, and the controller 2000 is used to control the battery to supply power to the motor 3000, for example, to meet the power demand of the vehicle 10000 during starting, navigation and driving.

[0051] In some embodiments of the present application, the battery can not only be used as an operating power supply of the vehicle 10000, but also be used as a driving power supply of the vehicle 10000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 10000.

[0052] Please refer toFigures 2-5 and combined Figure 6 and Figure 7 , Figure 2 It shows Figure 1 An exploded view of the housing 1100 and the battery cell 1200 in the battery device 1000 shown. Figure 3 A schematic diagram of a thermal management component 4000 in a battery device 1000 provided in some embodiments of this application is shown. Figure 4 It shows Figure 3 The top view of the thermal management component 4000 is shown. Figure 5 It shows Figure 3 The cross-sectional view of the thermal management component 4000 at point AA is shown. Figure 6 This application illustrates a thermal management component 4000 provided in some embodiments. Figure 5 A magnified view of point B shown. Figure 7 This application also shows some embodiments of the thermal management component 4000 provided. Figure 5 A magnified view of point B shown.

[0053] The battery device 1000 provided in some embodiments of this application includes a housing 1100, a battery cell 1200, and a thermal management assembly 4000. The housing 1100 is configured with a receiving space 1110; the battery cell 1200 is housed within the receiving space 1110. Figure 2 (As shown); the thermal management assembly 4000 is connected to the housing 1100; the thermal management assembly 4000 includes a first support member 100 and a thermal management component 200 (as shown); Figures 5-7 As shown), the first support member 100 is located on one side of the battery cell 1200 along a first direction. The thermal management component 200 is disposed on the side of the first support member 100 opposite to the battery cell 1200 along the first direction; exemplarily, the first direction is... Figures 6-7 The first support member 100 is located in the y-direction. Together with the first support member 100, it forms a fluid channel 201 capable of accommodating a fluid medium. The thermal management component 200 includes a connecting layer 210, a first sacrificial layer 220, and a second support plate 230, which are sequentially stacked along the first direction. The side of the connecting layer 210 facing away from the first sacrificial layer 220 is fixedly connected to the first support member 100. The electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the second support plate 230.

[0054] Please refer to Figure 2 , Figure 2 It shows Figure 1An exploded view of the battery is shown. The battery includes a box body 1100 and a battery cell 1200 accommodated in the box body 1100. The box body 1100 is configured to provide an accommodation space 1110 for the battery cell 1200, and can have various structures. In some embodiments, the box body 1100 can include a first part 1120 and a second part 1130, the first part 1120 and the second part 1130 are overlapped with each other, and the first part 1120 and the second part 1130 together define the accommodation space 1110 for accommodating the battery cell 1200. The second part 1130 can be a hollow structure with one end open, and the first part 1120 can be a plate structure, the first part 1120 is overlapped with the open end of the second part 1130, so that the first part 1120 and the second part 1130 together define the accommodation space 1110; the first part 1120 and the second part 1130 can also be hollow structures with one end open, and the open end of the first part 1120 is overlapped with the open end of the second part 1130. Of course, the box body 1100 formed by the first part 1120 and the second part 1130 can have various shapes, such as a cylinder, a cuboid, etc.

[0055] In the battery, the battery cell 1200 can be multiple, and the multiple battery cells 1200 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 1200 are connected in series and in parallel. The multiple battery cells 1200 can be directly connected in series, in parallel, or in a mixed connection, and the whole of the multiple battery cells 1200 is accommodated in the box body 1100; of course, the battery can also be that the multiple battery cells 1200 are first connected in series, in parallel, or in a mixed connection to form a battery module, and the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and the whole is accommodated in the box body 1100. The battery can also include other structures, for example, the battery can also include a busbar component for realizing the electrical connection between the multiple battery cells 1200.

[0056] Each battery cell 1200 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 1200 can have a cylindrical shape, a flat shape, a cuboid shape, or other shapes, etc.

[0057] The thermal management assembly 4000 can be directly accommodated in the accommodation space 1110 of the box 1100 and fixedly connected with the frame beam of the box 1100, so that the thermal management assembly 4000 directly forms a bottom plate of the box 1100 to perform thermal management and bearing on the battery monomers 1200 accommodated in the accommodation space 1110, so that the box 1100 of the battery device 1000 does not need to be additionally provided with a bottom plate, and the entire battery device 1000 is more lightweight. When the box 1100 itself has a bottom plate, the thermal management assembly 4000 can also be accommodated in the accommodation space 1110 and arranged between the bottom plate and the battery monomers 1200, so as to perform thermal management on the battery monomers 1200.

[0058] The thermal management component 200 can be stacked and rolled by the connecting layer 210, the first sacrificial layer 220 and the second bearing plate 230.

[0059] The first bearing 100 and the second bearing plate 230 can be made of 3xxx series aluminum-magnesium-manganese alloy. Thus, the pipe wall of the fluid channel 201 has better rust prevention function and oxidation coloring performance.

[0060] In some embodiments, the first bearing 100 and the second bearing plate 230 are made of 3003mod alloy. Since the 3003mod alloy adds a certain amount of copper element on the basis of the 3003 alloy, the strength of the plate material is improved. In this way, the first bearing 100 and the second bearing plate 230 have high strength and are not easy to deform during use, and can support a battery device 1000 with large volume and weight.

[0061] The connecting layer 210 can include a welding area for welding and connecting the first sacrificial layer 220 and the first bearing 100 together. For example, during preparation of the thermal management component 200, the connecting layer 210 can be a layer of solder, in which the solder can locally melt at high temperature, and then the first bearing 100 and the first sacrificial layer 220 are welded together to form a welding area, and the solder not fixedly connected with the first bearing 100 constitutes the pipe wall of the fluid channel 201.

[0062] The first sacrificial layer 220 can be a Zn sacrificial layer, and for example, the first sacrificial layer 220 can be made of 7072 alloy. For example, the 7072 alloy includes: Si+Fe≤0.7%; Zn: 0.8-1.3%; Cu≤0.1%; Mn≤0.1%; Mg≤0.1%; no specified content of other elements; Al: balance.

[0063] The fluid medium can be a cooling liquid or a cooling gas. Of course, it can also be a heating liquid or a heating gas, etc. that can heat the battery, so as to be able to perform different demand thermal management on the battery monomer 1200, and meet the demand of more use scenarios. Hereinafter, only the fluid medium as a cooling liquid is exemplified.

[0064] When the connecting layer 210 is damaged or scratched during use, the first sacrificial layer 220 and the second bearing plate 230 may be exposed. Since the first sacrificial layer 220 contains Zn element, according to the characteristics of metal materials, the electrode potential of Al-Zn alloy will be lower than that of ordinary Al alloy, so when electrochemical corrosion occurs, the first sacrificial layer 220 will preferentially chemically corrode the second bearing plate 230, thereby protecting the second bearing plate 230 and improving the corrosion resistance of the pipe wall of the fluid channel 201 of the thermal management component 200, and prolonging the service life of the second bearing plate 230.

[0065] Exemplarily, when the first sacrificial layer 220 is a Zn sacrificial layer and the second bearing plate 230 is a 3003mod alloy. When the cooling liquid flows in the fluid channel 201, especially when the cooling liquid is a low-conductivity cooling liquid with less corrosion inhibitor, when the connecting layer 210 is damaged after long-term use, the cooling liquid will contact the first sacrificial layer 220 and even the second bearing plate 230, and the cooling liquid will preferentially chemically react with the first sacrificial layer 220, thereby protecting the second bearing plate 230 to reduce the possibility of corrosion and leakage of the second bearing plate 230, which is beneficial to improve the service life of the thermal management assembly 4000 and effectively ensure the heat dissipation stability of the thermal management assembly 4000 to the battery monomer 1200.

[0066] Please refer to Figure 5 , the first bearing 100 has a first surface 101 and a second surface 102 oppositely arranged along the first direction, the first surface 101 is used to bear the battery monomer 1200, and the second surface 102 is connected with the thermal management component 200.

[0067] The battery device 1000 provided by the embodiments of the present application is formed by the heat management component 200 through the lamination of the connecting layer 210, the first sacrificial layer 220 and the second bearing plate 230, and the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the second bearing plate 230. Therefore, when the fluid medium flows in the fluid channel 201, especially when the fluid medium is low-conductivity coolant with less corrosion inhibitor, after the heat management assembly 4000 is used for a long time, when the connecting layer 210 is damaged, the fluid medium will contact the first sacrificial layer 220 and even the second bearing plate 230, and the fluid medium will preferentially react with the first sacrificial layer 220, thereby protecting the second bearing plate 230 and reducing the possibility of corrosion and leakage of the second bearing plate 230, and effectively ensuring the thermal management stability of the heat management assembly 4000 to the battery monomer 1200.

[0068] In some embodiments, the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the connecting layer 210.

[0069] In the preparation process of the heat management component 200, the connecting layer 210 can be a brazing filler layer, and the brazing filler layer can be 4045 alloy or 4043 alloy. The first sacrificial layer 220 can be prepared by using 7072 alloy.

[0070] Since the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the connecting layer 210, when the coolant flows in the fluid channel 201, especially when the coolant is low-conductivity coolant with less corrosion inhibitor, after a long time of use, when the connecting layer 210 is damaged, the coolant will contact the first sacrificial layer 220, and the coolant will preferentially react with the first sacrificial layer 220, thereby protecting the connecting layer 210 and reducing the possibility of further corrosion of the connecting layer 210, and effectively ensuring the connection strength of the heat management component 200 and the first bearing 100.

[0071] Please refer to Figure 6 and Figure 7 In some embodiments, the thickness h1 of at least part of the heat management component 200 and the thickness h2 of at least part of the first sacrificial layer 220 satisfy the condition: 3%h1≤h2≤17%h1; for example, the first direction is Figures 6-7 the y direction in

[0072] Before rolling the connecting layer 210, the first sacrificial layer 220 and the second bearing plate 230, the thickness of the first sacrificial layer 220 can be controlled, so that the thickness h2 of at least part of the first sacrificial layer 220 is finally located in the range of 3%-17% of the thickness h1 of at least part of the heat management component 200.

[0073] Exemplarily, the thickness h1 of the at least partial thermal management component 200 can be understood as the thickness of the entire thermal management component 200, or as the thickness of a partial thermal management component 200. The thickness h2 of the at least partial first sacrificial layer 220 can be understood as the thickness of the entire first sacrificial layer 220, or as the thickness of only a partial first sacrificial layer 220.

[0074] The thickness h1 of the thermal management component 200 is the thickness at any position along the second direction of the thermal management component 200, the second direction being perpendicular to the first direction. Figure 6 and Figure 7 The thickness h1 of the thermal management component 200 is the thickness at any position along the second direction of the thermal management component 200, the second direction being perpendicular to the first direction. Figure 6 and Figure 7 The thickness h1 of the thermal management component 200 is the thickness at any position along the second direction of the thermal management component 200, the second direction being perpendicular to the first direction.

[0075] The thickness h2 of the first sacrificial layer 220 is the thickness at any position along the second direction of the first sacrificial layer 220, the second direction being perpendicular to the first direction. Figure 6 and Figure 7 The thickness h2 of the first sacrificial layer 220 is the thickness at any position along the second direction of the first sacrificial layer 220, the second direction being perpendicular to the first direction. Figure 6 and Figure 7 The thickness h2 of the first sacrificial layer 220 is the thickness at any position along the second direction of the first sacrificial layer 220, the second direction being perpendicular to the first direction.

[0076] When the thickness h2 of the first sacrificial layer 220 is greater than or equal to 3% of h1, the first sacrificial layer 220 will not be too thin compared to the thickness of the thermal management component 200, thereby improving the protection effect on the connecting layer 210 and the second carrier plate. When the thickness h2 of the first sacrificial layer 220 is less than or equal to 17% of h1, the first sacrificial layer 220 will not be too thick compared to the thickness of the thermal management component 200, thereby reducing space occupation, reducing cost, and improving the volume energy density of the battery device.

[0077] The present application sets the thickness h2 of the at least partial first sacrificial layer 220 to be greater than or equal to 3% of the thickness h1 of the at least partial thermal management component 200, and less than or equal to 17% of the thickness h1 of the at least partial thermal management component 200, thereby making the first sacrificial layer 220 have a reasonable thickness ratio compared to the thermal management component 200, and thereby enabling effective protection of the connecting layer 210 and the second carrier plate 230 within a certain shelf life, and not easily causing waste of the first sacrificial layer 220.

[0078] Alternatively, the thickness h2 of the at least partial first sacrificial layer 220 can be equal to 3% of h1, or equal to 17% of h1, of course, it can also be equal to 7% of h1, 11% of h1, 13% of h1, or 15% of h1, which is not specially limited.

[0079] Referring to Figure 6 and Figure 7 In some embodiments, the thickness h1 of the at least partial thermal management component 200 and the thickness h2 of the at least partial first sacrificial layer 220 satisfy the condition: 7%h1≤h2≤13%h1.

[0080] When the thickness h2 of the first sacrificial layer 220 is greater than or equal to 7% of h1, the first sacrificial layer 220 can not be too thin compared to the thickness of the thermal management component 200, thereby improving the protection effect on the connecting layer 210 and the second carrier plate. When the thickness h2 of the first sacrificial layer 220 is less than or equal to 13% of h1, the first sacrificial layer 220 can not be too thick compared to the thickness of the thermal management component 200, thereby reducing space occupation, reducing cost, and improving the volume energy density of the battery device.

[0081] By setting the thickness h2 of the at least partial first sacrificial layer 220 to be greater than or equal to 7% of the thickness h1 of the at least partial thermal management component 200 and less than or equal to 13% of the thickness h1 of the at least partial thermal management component 200, the thickness of the at least partial first sacrificial layer 220 compared to the thickness of the thermal management component 200 is optimized, thereby effectively protecting the connecting layer 210 and the second carrier plate 230 within a certain shelf life, i.e., meeting certain protection time requirements, and not easily causing waste of the material of the first sacrificial layer 220.

[0082] Optionally, the thickness h2 of the at least partial first sacrificial layer 220 can be equal to 7% of h1, or equal to 13% of h1, of course, it can also be equal to 9% of h1, 9.5% of h1, 10% of h1, or 11% of h1, which is not specially limited.

[0083] Referring to Figure 6 and Figure 7 In some embodiments, the thermal management component 200 further includes a second sacrificial layer 240, the second sacrificial layer 240 is arranged on the side of the second carrier plate 230 away from the first sacrificial layer 220, and the electrode potential of the second sacrificial layer 240 is lower than the electrode potential of the second carrier plate 230.

[0084] The material of the second sacrificial layer 240 can be the same as or different from the material of the first sacrificial layer 220. The layer thickness of the second sacrificial layer 240 in the first direction can be the same as or different from the layer thickness of the first sacrificial layer 220.

[0085] In some embodiments, the second sacrificial layer 240 is made of 7072 alloy. The electrode potential of the second sacrificial layer 240 is lower than the electrode potential of the second carrier plate 230.

[0086] By arranging the second sacrificial layer 240 on the side of the second carrier plate 230 away from the first sacrificial layer 220, the side of the second carrier plate 230 away from the first sacrificial layer 220 can be protected by the second sacrificial layer 240, so as to reduce the possibility of corrosion of the second carrier plate 230 by water vapor in the air, and both sides of the second carrier plate 230 in the first direction can be protected.

[0087] In some embodiments, the material of the first sacrificial layer 220 includes any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy.

[0088] The aluminum-zinc alloy has strong sacrificial protection capability and excellent high-temperature resistance. The zinc-aluminum-magnesium alloy has strong sacrificial protection capability and strong self-repairing capability. The zinc-iron alloy has good weldability and paintability.

[0089] By setting the material of the first sacrificial layer as any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy, the material selection of the first sacrificial layer is more extensive, and can be selected according to different use scenarios and requirements. For example, when heat resistance, weather resistance, and economy need to be considered, aluminum-zinc alloy can be selected; when used in high-corrosion environments and long-life applications, zinc-aluminum-magnesium alloy can be selected; or when weldability and paintability are required, zinc-iron alloy can be selected.

[0090] In some embodiments, the material of the second sacrificial layer 240 includes any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy. By setting the material of the second sacrificial layer as any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy, the material selection of the second sacrificial layer is more extensive, and can be selected according to different use scenarios and requirements. For example, when heat resistance, weather resistance, and economy need to be considered, aluminum-zinc alloy can be selected; when used in high-corrosion environments and long-life applications, zinc-aluminum-magnesium alloy can be selected; or when weldability and paintability are required, zinc-iron alloy can be selected.

[0091] Please refer to Figure 7 In some embodiments, the first carrier 100 includes a first carrier plate 110, and the side of the first carrier plate 110 away from the battery monomer 1200 is connected with the connecting layer 210.

[0092] The first bearing plate 110 can be made of 3003mod alloy. Since the 3003mod alloy adds a certain amount of copper element on the basis of the 3003 alloy, the strength of the plate is improved. In this way, the first bearing plate 110 has high strength and is not easy to deform during use, and can support a battery device 1000 with a large volume and weight.

[0093] The side of the first bearing plate 110 away from the battery monomer 1200 is connected with the connecting layer 210, and the side of the first bearing plate 110 away from the connecting layer 210 can be used to bear the battery monomer 1200, so as to be able to perform thermal management operation on the battery monomer 1200.

[0094] Please refer to Figure 6 In some embodiments, the first bearing 100 further comprises a third sacrificial layer 120; the third sacrificial layer 120 is arranged on the side of the first bearing plate 110 close to the connecting layer 210 and is fixedly connected with the first bearing plate 110; the electrode potential of the third sacrificial layer 120 is lower than that of the first bearing plate 110.

[0095] The material of the third sacrificial layer 120 can be the same as that of the first sacrificial layer 220, or can be different from that of the first sacrificial layer 220. The layer thickness of the third sacrificial layer 120 in the first direction can be the same as that of the first sacrificial layer 220, or can be different from that of the first sacrificial layer 220.

[0096] In some embodiments, the third sacrificial layer 120 is made of 7072 alloy. The electrode potential of the third sacrificial layer 120 is lower than that of the first bearing plate 110.

[0097] By arranging the third sacrificial layer 120 on the side of the first bearing plate 110 close to the connecting layer 210, the side of the first bearing plate 110 close to the cooling liquid can be protected by the third sacrificial layer 120, reducing the possibility of chemical corrosion of the first bearing plate 110 with the cooling liquid, thereby protecting the first bearing plate 110, improving the corrosion resistance of the pipe wall of the fluid channel 201 of the thermal management component 200, and prolonging the service life of the first bearing plate 110.

[0098] Exemplarily, when the third sacrificial layer 120 is a Zn sacrificial layer and the first carrier plate 110 is a 3003mod alloy. When the cooling liquid flows in the fluid channel 201, especially when the cooling liquid is a low-conductivity cooling liquid with less corrosion inhibitor, the cooling liquid can come into contact with the first carrier plate 110 after a long time of use, for example, after vibration or bumping. At this time, since the electrode potential of the third sacrificial layer 120 is lower than that of the first carrier plate 110, the cooling liquid will preferentially react with the third sacrificial layer 120, thereby protecting the first carrier plate 110 and reducing the possibility of corrosion and leakage of the first carrier plate 110, effectively ensuring the stability of the heat management assembly 4000 in dissipating heat from the battery monomer 1200.

[0099] Referring to Figure 6 and Figure 7 In some embodiments, the heat management assembly 4000 further comprises an insulation layer 300; the insulation layer 300 is arranged on the side of the first carrier 100 away from the connecting layer 210 and is fixedly connected with the first carrier 100; and the battery monomer 1200 is insulatedly connected with the first carrier 100 through the insulation layer 300.

[0100] The insulation layer 300 can be sprayed on the first surface 101 of the first carrier 100 by spraying processing. The insulation layer 300 can be a sprayed powder insulation layer 300, thereby improving the wear resistance, corrosion resistance and aesthetic appearance of the first surface 101. The insulation layer 300 can be made of epoxy resin, polyurethane resin or acrylic resin, etc.

[0101] By arranging the insulation layer 300 on the first surface 101, the battery monomer 1200 mounted on the first surface 101 can be insulated, so that the heat management assembly 4000 is less likely to conduct the leakage current from the battery monomer 1200, and the reliability of the heat management assembly 4000 is higher; and the first surface 101 of the first carrier 100 can also be protected by the insulation layer 300, thereby reducing the possibility of corrosion and damage of the first surface 101.

[0102] Referring to Figures 5-7 In some embodiments, the heat management assembly 200 comprises a plurality of spacing portions 202 and a plurality of connecting portions 203; the spacing portions 202 are arranged at intervals in the first direction with respect to the first carrier 100; the connecting portions 203 are connected between two adjacent spacing portions 202; the connecting portions 203 are fixedly connected with the first carrier 100; and the gap between the spacing portions 202 and the first carrier 100 forms the fluid channel 201.

[0103] The plurality of interval portions 202 and the plurality of connecting portions 203 on the thermal management component 200 can be formed by bending and stamping on the thermal management component 200. The size and shape of the interval portions 202 and the connecting portions 203 on the thermal management component 200 can be adaptively adjusted according to the shape and size of the fluid channel 201 arranged.

[0104] The connecting portion 203 and the first carrier 100 can be fixedly connected through the connecting layer 210.

[0105] By arranging the thermal management component 200 as the plurality of interval portions 202 and the plurality of connecting portions 203, and forming the fluid channel 201 through the gap between the interval portion 202 and the first carrier 100, the formation of the fluid channel 201 is simple and convenient, and easy to process and manufacture.

[0106] The battery device 1000 provided by the embodiment of the application comprises a box body 1100, a battery monomer 1200, and a thermal management assembly 4000. The box body 1100 is configured with an accommodation space 1110; the battery monomer 1200 is accommodated in the accommodation space 1110; the thermal management assembly 4000 is connected with the box body 1100; and the thermal management assembly 4000 comprises a first carrier 100 and a thermal management component 200. The first carrier 100 is located at one side of the battery monomer 1200 along a first direction; the thermal management component 200 is arranged at a side of the first carrier 100 away from the battery monomer 1200 along the first direction; and the thermal management component 200 and the first carrier 100 jointly configure a fluid channel 201 capable of accommodating a fluid medium. The thermal management component 200 comprises a connecting layer 210, a first sacrificial layer 220, a second carrier plate 230, and a second sacrificial layer 240 arranged in sequence along the first direction. A side of the connecting layer 210 away from the first sacrificial layer 220 is fixedly connected with the first carrier 100; wherein the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the second carrier plate 230, and the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the connecting layer 210; and the thickness h2 of the first sacrificial layer 220 is greater than or equal to 3% of the thickness h1 of the thermal management component 200, and less than or equal to 17% of the thickness h1 of the thermal management component 200. The second sacrificial layer 240 is arranged at a side of the second carrier plate 230 away from the first carrier 100, and the electrode potential of the second sacrificial layer 240 is lower than the electrode potential of the second carrier plate 230.

[0107] When the battery device 1000 provided by the embodiment of the present application is in use, the fluid medium flows in the fluid channel 201, and in particular when the fluid medium is a low-conductivity coolant with less corrosion inhibitor, after the thermal management assembly 4000 is used for a long time, the connecting layer 210 is damaged, at this time the fluid medium will contact the first sacrificial layer 220 and even the second carrier plate 230, the fluid medium will preferentially react with the first sacrificial layer 220, thereby protecting the second carrier plate 230 and the connecting layer 210, to reduce the possibility of corrosion and leakage of the second carrier plate 230, effectively ensuring the thermal management stability of the thermal management assembly 4000 to the battery monomer 1200. Since the thickness h2 of the first sacrificial layer 220 is set to be greater than or equal to 3% of the thickness h1 of the thermal management component 200, and less than or equal to 17% of the thickness h1 of the thermal management component 200, the thickness ratio of the first sacrificial layer 220 to the thermal management component 200 is reasonable, thereby enabling effective protection of the connecting layer 210 and the second carrier plate 230 within a certain shelf life, and the first sacrificial layer 220 is not easily wasted. By providing the second sacrificial layer 240 on the side of the second carrier plate 230 away from the second carrier plate 230, the second sacrificial layer 240 can protect the side of the second carrier plate 230 away from the first sacrificial layer 220, thereby reducing the possibility of corrosion of the second carrier plate 230 by water vapor in the air, and enabling the two sides of the second carrier plate 230 in the first direction to be protected.

[0108] Please refer to Figures 3-7 The present application also provides a thermal management assembly 4000, which comprises a first carrier 100 and a thermal management component 200, the first carrier 100 and the thermal management component 200 are sequentially arranged along a first direction, and the first direction is exemplarily the y direction in Figures 6-7 The thermal management component 200 and the first carrier 100 jointly constitute a fluid channel 201 capable of accommodating a cooling medium; the thermal management component 200 comprises a connecting layer 210, a first sacrificial layer 220 and a second carrier plate 230 which are sequentially stacked along the first direction; the side of the connecting layer 210 away from the first sacrificial layer 220 is fixedly connected with the first carrier 100; wherein the electrode potential of the first sacrificial layer 220 is lower than the electrode potential of the second carrier plate 230.

[0109] When the heat management assembly 4000 is installed on the box body 1100 of the battery device 1000 to perform heat management on the battery monomer 1200, since the heat management component 200 is formed by the laminated connection layer 210, the first sacrificial layer 220 and the second bearing plate 230, and the electrode potential of the first sacrificial layer 220 is lower than that of the second bearing plate 230, when the cooling liquid flows in the fluid channel 201, especially when the cooling liquid is low-conductivity cooling liquid with less corrosion inhibitor, after the heat management assembly 4000 is used for a long time, when the connection layer 210 is damaged, the cooling liquid will contact the first sacrificial layer 220 and even the second bearing plate 230, and the cooling liquid will preferentially react with the first sacrificial layer 220, thereby protecting the second bearing plate 230, reducing the possibility of corrosion and leakage of the second bearing plate 230, and facilitating to improve the service life of the heat management assembly 4000 and effectively ensure the heat dissipation stability of the heat management assembly 4000 on the battery monomer 1200.

[0110] Please refer to Figure 1 The application further provides a power consumption device including the battery device 1000 described in any of the above embodiments, which is used to provide electric energy and can achieve at least one of the above technical effects.

[0111] The battery device 1000 disclosed in the embodiments of the application can be used in, but is not limited to, a power consumption device such as a vehicle 10000, a ship or an aircraft. Illustratively, the power consumption device can be, but is not limited to, an electric toy, an electric tool, an electric vehicle, an electric vehicle, a ship, a spacecraft and the like. The electric toy can include a fixed or mobile electric toy, such as an electric vehicle toy, an electric ship toy and an electric aircraft toy, and the spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft. By using the battery device 1000 disclosed in the application to form the power supply system of the power consumption device, the phenomenon that the cooling liquid corrodes the pipe wall of the fluid channel 201 of the heat management assembly 4000 of the battery device 1000 can be alleviated, the service life of the heat management assembly 4000 can be improved, the risk of leakage can be reduced, and the heat dissipation stability of the heat management assembly 4000 on the battery monomer 1200 can be effectively ensured.

[0112] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, The battery device includes: The box (1100) has a storage space (1110). A single battery cell (1200) is housed within the receiving space (1110); A thermal management assembly (4000) is connected to the housing (1100), the thermal management assembly (4000) comprising: A first support member (100) is located on one side of the battery cell (1200) along a first direction; A thermal management component (200) is disposed along the first direction on the side of the first support member (100) opposite to the battery cell (1200); and together with the first support member (100), it forms a fluid channel (201) capable of accommodating a fluid medium; the thermal management component (200) includes a connecting layer (210), a first sacrificial layer (220) and a second support plate (230) stacked sequentially along the first direction; the connecting layer (210) is fixedly connected to the first support member (100) on the side opposite to the first sacrificial layer (220); The electrode potential of the first sacrificial layer (220) is lower than that of the electrode potential of the second carrier plate (230).

2. The battery device according to claim 1, characterized in that, The electrode potential of the first sacrificial layer (220) is lower than the electrode potential of the connecting layer (210).

3. The battery device according to claim 1, characterized in that, The thickness h1 of at least a portion of the thermal management component (200) and the thickness h2 of at least a portion of the first sacrificial layer (220) satisfy the following condition: 3%h1≤h2≤17%h1.

4. The battery device according to claim 3, characterized in that, The thickness h1 of at least a portion of the thermal management component (200) and the thickness h2 of at least a portion of the first sacrificial layer (220) satisfy the following condition: 7%h1≤h2≤13%h1.

5. The battery device according to claim 1, characterized in that, The thermal management component (200) further includes a second sacrificial layer (240), which is disposed on the side of the second support plate (230) opposite to the first sacrificial layer (220); The electrode potential of the second sacrificial layer (240) is lower than the electrode potential of the second carrier plate (230).

6. The battery device according to claim 5, characterized in that, The material of the first sacrificial layer (220) includes any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy; and / or The material of the second sacrificial layer (240) includes any one of aluminum-zinc alloy, zinc-aluminum-magnesium alloy, and zinc-iron alloy.

7. The battery device according to any one of claims 1-6, characterized in that, The first support member (100) includes a first support plate (110); The first support plate (110) is connected to the connecting layer (210) on the side opposite to the battery cell (1200).

8. The battery device according to claim 7, characterized in that, The first carrier (100) also includes a third sacrificial layer (120); The third sacrificial layer (120) is disposed on the side of the first support plate (110) near the connecting layer (210) and is fixedly connected to the first support plate (110); The electrode potential of the third sacrificial layer (120) is lower than the electrode potential of the first carrier plate (110).

9. The battery device according to any one of claims 1-6, characterized in that, The thermal management assembly (4000) also includes an insulating layer (300); The insulating layer (300) is disposed on the side of the first carrier (100) away from the connecting layer (210) and is fixedly connected to the first carrier (100); the battery cell (1200) is insulatedly connected to the first carrier (100) through the insulating layer (300).

10. The battery device according to any one of claims 1-6, characterized in that, The thermal management component (200) includes a plurality of spacers (202) and a plurality of connecting parts (203). The spacer (202) is spaced apart from the first support member (100) in the first direction; the connecting part (203) connects two adjacent spacers (202); The connecting part (203) is fixedly connected to the first carrier (100); the gap between the spacer part (202) and the first carrier (100) forms the fluid channel (201).

11. A thermal management component (4000), characterized in that, include: First load-bearing component (100); A thermal management component (200) is provided, wherein the first support member (100) and the thermal management component (200) are arranged sequentially along a first direction, and the thermal management component (200) and the first support member (100) together form a fluid channel (201) capable of accommodating a cooling medium; the thermal management component (200) includes a connecting layer (210), a first sacrificial layer (220) and a second support plate (230) arranged sequentially along the first direction. The connecting layer (210) is fixedly connected to the first carrier (100) on the side opposite to the first sacrificial layer (220); The electrode potential of the first sacrificial layer (220) is lower than that of the electrode potential of the second carrier plate (230).

12. An electrical appliance, characterized in that, include: The battery device as described in any one of claims 1-10.

Images