Box structure, battery, electric device and assembly method of box structure

Abstract

The invention is suitable for the technical field of batteries, and provides a box structure, a battery, a power utilization device and an assembly method of the box structure, the power utilization device comprises the battery, the battery comprises the box structure, and the box structure comprises a box body and a heat management assembly. A battery compartment is arranged in the box body; the heat management assembly is installed on the box body and provided with a flow channel, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the flow channel; the box body is further provided with a first box wall, at least part of the first box wall is located between the battery bin and the heat management assembly, and the first box wall is used for isolating the battery bin from the heat management assembly. The assembly method of the box structure comprises the step of installing the heat management assembly on the side, away from the battery compartment, of the first box wall of the box body. Therefore, when the heat management assembly leaks liquid, the first box wall can isolate the heat management liquid in the flow channel, so that the problem that the heat management liquid flows into the battery compartment can be improved. Through the arrangement, the risk that the heat management assembly leaks liquid into the battery compartment can be reduced, so that the reliability of the battery is improved.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and more specifically, relates to a box structure, a battery, an electrical device, and an assembly method of the box structure. Background Art

[0002] In the related art, a battery is usually provided with a thermal management component, and the thermal management of battery cells can be achieved through the thermal management component.

[0003] However, there is an inevitable risk of liquid leakage in the thermal management component. In some cases, when the thermal management component leaks liquid, there is an inevitable risk that the thermal management liquid inside the thermal management component flows into the battery compartment of the battery, thus making the reliability of the battery relatively low. Summary of the Invention

[0004] In view of the above problems, the embodiments of this application provide a box structure, a battery, an electrical device, and an assembly method of the box structure, which can improve the technical problem that the thermal management component has a risk of leaking liquid into the battery compartment.

[0005] In a first aspect, the embodiments of this application provide a box structure, including:

[0006] A box body, which has a battery compartment inside;

[0007] A thermal management assembly, which is installed on the box body and is provided with a flow channel, a liquid inlet, and a liquid outlet, and both the liquid inlet and the liquid outlet communicate with the flow channel;

[0008] Wherein, the box body is further provided with a first box wall, at least part of the first box wall is located between the battery compartment and the thermal management assembly, and is used to isolate the battery compartment and the thermal management assembly.

[0009] For the box structure provided by the embodiments of this application, at least part of the first box wall of the box body is arranged between the battery compartment and the thermal management assembly, so that the first box wall is used to isolate the battery compartment and the thermal management assembly. In this way, when the thermal management assembly leaks liquid, causing the thermal management liquid in the flow channel to flow out, the first box wall can isolate the thermal management liquid, thereby being able to improve the problem of the thermal management liquid flowing into the battery compartment. With such a setting, the risk of the thermal management assembly leaking liquid into the battery compartment can be reduced, so as to improve the reliability of the battery.

[0010] In some embodiments, the box body and the thermal management assembly are detachably connected.

[0011] In this way, it is convenient for the maintenance and replacement operations of the thermal management assembly.

[0012] In some embodiments, the thermal management assembly includes a thermal management component, and the flow channel is arranged inside the thermal management component; at least part of the thermal management component is located on the side of the first box wall away from the battery compartment and is connected to the box body.

[0013] In this way, the relative position between the flow channel of the heat management component and the battery compartment can be fixed.

[0014] In some embodiments, the heat management component is bonded to the first box wall.

[0015] In this way, the heat management component can be very close to the first box wall, and further, the heat management component can be very close to the battery compartment. Thus, the heat transfer path between the battery compartment and the heat management liquid inside the heat management component is short, which is conducive to rapid heat transfer, and thus conducive to improving the heat exchange efficiency between the heat management liquid in the heat management component and the battery cells in the battery compartment.

[0016] In some embodiments, a glue layer is provided between the heat management component and the first box wall, and the glue layer includes a thermally conductive structural glue layer.

[0017] In this way, the heat exchange performance between the heat management liquid in the flow channel and the battery cells in the battery compartment can be improved, so as to improve the heat management efficiency of the heat management liquid in the flow channel for the battery.

[0018] In some embodiments, the heat management assembly includes:

[0019] An installation structure, connected to the box body;

[0020] A heat management component, installed on the installation structure and at least partially located on the side of the first box wall away from the battery compartment; a flow channel is arranged in the heat management component.

[0021] By installing the heat management component on the installation structure and connecting the installation structure to the box body, the heat management assembly is installed on the box body.

[0022] In some embodiments, the installation structure is provided with an installation groove, and at least part of the heat management component is installed in the installation groove.

[0023] In this way, the positioning of the heat management component on the installation structure can be realized, which can improve the stability and reliability of the relative position between the heat management component and the box body.

[0024] In some embodiments, the installation groove is arranged on the side of the installation structure facing the first box wall.

[0025] With such a setting, on the one hand, it is convenient to install the heat management component in the installation groove. On the other hand, the side of the heat management component facing the first box wall can be closer to the first box wall, so as to facilitate the heat exchange between the heat management liquid in the heat management component and the battery cells in the battery compartment, and is also convenient to improve the heat management efficiency of the heat management assembly for the battery. In addition, it is also convenient to arrange a glue layer between the side of the heat management component facing the first box wall and the first box wall.

[0026] In some embodiments, the installation structure includes:

[0027] The mounting member is connected to the box body;

[0028] The filling member is arranged on the mounting member and defines a mounting groove.

[0029] In this way, it is convenient to form the mounting groove of the mounting structure, which is beneficial to the installation and positioning of the heat management component on the mounting structure.

[0030] In some embodiments, the mounting structure includes:

[0031] The mounting member is connected to the box body;

[0032] The filling member is arranged on the mounting member and at least partially abuts between the side of the heat management component away from the first box wall and the mounting member.

[0033] With such a setting, at least part of the filling member is located between the side of the heat management component away from the first box wall and the mounting member, so as to be able to provide a certain buffering and protecting effect on the heat management component.

[0034] In some embodiments, the filling member is a foamed material member.

[0035] With such a setting, it is convenient to install the filling member on the mounting structure, so as to facilitate the molding of the heat management component. Moreover, the foamed material has relatively high structural strength and heat insulation performance, so as to achieve better positioning, heat insulation and buffering and protecting effects on the heat management component.

[0036] In some embodiments, the mounting structure and the box body are fixed by fasteners.

[0037] With such a setting, a detachable connection between the mounting structure and the box body can be realized to achieve the installation of the heat management component on the box body.

[0038] In some embodiments, the heat management component is installed in the mounting structure and is located on the side of the mounting structure facing the first box wall; the fastener sequentially passes through the mounting structure and the box body, and a sealing ring is sleeved on the outer periphery of the fastener, and the sealing ring seals the connection between the box body and the mounting structure.

[0039] With such a setting, the sealing ring can achieve the sealing between the connections of the box body and the mounting structure, and can improve the problem that the heat management liquid in the heat management component leaks to the outside when leaking.

[0040] In some embodiments, the heat management component is in a plate shape or a tubular shape.

[0041] With such a setting, the design of the heat management component is very flexible.

[0042] In some embodiments, one side of the first box wall away from the battery compartment is perpendicular to the first direction, the flow channel is bent and extended, and the extending direction of the flow channel intersects with the first direction.

[0043] In this way, the heat exchange efficiency between the heat management liquid in the flow channel and the battery cells in the battery compartment can be improved, so as to improve the heat management efficiency of the heat management component for the battery.

[0044] In a second aspect, an embodiment of the present application provides a battery, including a box structure.

[0045] For the battery provided by the embodiment of the present application, by adopting the box structure involved above, the risk of liquid leakage from the heat management component into the battery compartment can be reduced, so as to improve the reliability of the battery.

[0046] In a third aspect, an embodiment of the present application provides an electrical device, including a box structure or a battery.

[0047] For the electrical device provided by the embodiment of the present application, by adopting the box structure or battery involved above, the risk of liquid leakage from the heat management component into the battery compartment can be reduced, so as to improve the reliability of the battery, and further improve the reliability of the electrical device.

[0048] In a fourth aspect, an embodiment of the present application provides an assembly method for a box structure, which is applied to the box structure; the assembly method for the box structure includes:

[0049] Install the heat management component on one side of the first box wall of the box body away from the battery compartment.

[0050] For the assembly method of the box structure provided by the embodiment of the present application, the battery compartment and the heat management component can be isolated by the first box wall, and the problem that the heat management liquid flows into the battery compartment can be improved. With such a setting, the risk of liquid leakage from the heat management component into the battery compartment can be reduced, so as to improve the reliability of the battery.

[0051] In some embodiments, before installing the heat management component on one side of the first box wall of the box body away from the battery compartment, it includes:

[0052] Set a thermally conductive structural adhesive layer on at least one of the side of the heat management component facing the first box wall and the side of the first box wall away from the battery compartment;

[0053] Installing the heat management component on one side of the first box wall of the box body away from the battery compartment includes:

[0054] Bond the heat management component to one side of the first box wall away from the battery compartment through the thermally conductive structural adhesive layer.

[0055] With such a setting, the heat management component is adhered to the first box wall, which can improve the reliability and stability of the relative position between the heat management component and the first box wall. Moreover, the adhesive layer is a thermally conductive structural adhesive layer, which can improve the heat conduction efficiency between the heat management liquid in the flow channel and the battery cells in the battery compartment, etc. Based on this, the heat exchange performance between the heat management liquid in the flow channel and the battery cells in the battery compartment, etc. can be improved, so as to improve the heat management efficiency of the heat management liquid in the flow channel for the battery.

[0056] In some embodiments, before arranging the thermally conductive structural adhesive layer on at least one of the side of the heat management component facing the first box wall and the side of the first box wall away from the battery compartment, it includes:

[0057] Place the heat management component in the mounting part and on the side of the mounting part facing the first box wall;

[0058] Arrange foaming material in the mounting part so that after the foaming material foams, it forms a filling part;

[0059] When installing the heat management assembly on the side of the first box wall of the box body away from the battery compartment, it further includes:

[0060] Fix the mounting part to the box body detachably through fasteners.

[0061] By adopting the above technical solutions, on the one hand, through the arrangement of the foaming material, the filling part can buffer, protect, position and insulate the heat management component. On the other hand, by fixing the mounting part to the box body detachably through fasteners, the connection reliability between the heat management assembly and the box body can be improved, and it also helps to improve the overall structural strength of the box structure. Moreover, the detachable connection setting facilitates the maintenance and replacement of the heat management assembly.

[0062] The above description is only an overview of the technical solutions of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specifically gives the specific implementation manners of this application. Brief Description of the Drawings

[0063] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required to be used in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0064] Figure 1 Schematic diagram of a vehicle provided by some embodiments of this application;

[0065] Figure 2Exploded schematic view of the battery provided by some embodiments of the present application;

[0066] Figure 3 Partial three-dimensional structure diagram of the box structure provided by some embodiments of the present application;

[0067] Figure 4 For Figure 3 Exploded schematic view of the box structure shown;

[0068] Figure 5 For Figure 3 Partial cross-sectional view along A-A;

[0069] Figure 6 For Figure 5 Enlarged view of B in

[0070] Figure 7 Partial schematic view of the thermal management component of the box structure provided by some embodiments of the present application;

[0071] Figure 8 For Figure 5 Enlarged view of C in

[0072] Figure 9 Method flow chart of the assembly method of the box structure provided by some embodiments of the present application;

[0073] Figure 10 Method flow chart of the assembly method of the box structure provided by other embodiments of the present application;

[0074] Figure 11 Method flow chart of the assembly method of the box structure provided by still other embodiments of the present application.

[0075] Among them, each reference numeral in the figure:

[0076] 1000 - vehicle; 100 - battery; 200 - controller; 300 - motor; 10 - battery cell; 20 - box structure; 201 - battery compartment; 202 - flow channel; 203 - liquid inlet; 204 - liquid outlet; 205 - installation groove; 21 - box body; 211 - first part; 2111 - first box wall; 2112 - frame; 212 - second part; 22 - thermal management component; 221 - thermal management part; 222 - adhesive layer; 223 - installation structure; 2231 - installation part; 2232 - filling part; 224 - sealing ring; 225 - first pipe joint; 226 - second pipe joint; 23 - fastener; Z - first direction; Y - second direction; X - third direction. Detailed implementation manners

[0077] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

[0078] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These are only for convenience in describing the present application and simplifying the 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, and thus should not be construed as limiting the present application.

[0079] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0080] In the description of the present application, the meaning of "a plurality" is more than two. Unless otherwise clearly and specifically defined, "more than two" includes two. Correspondingly, the meaning of "multiple groups" is more than two groups, including two groups.

[0081] In the description of the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082] In the description of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may mean: there is A, there is both A and B, and there is B. In addition, in the present application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0083] Although the present application has been described with reference to the preferred embodiments, various modifications can be made thereto and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0084] In the related art, a battery refers to a single physical module including one or more battery cells to provide a higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or in a series-parallel combination through a busbar component. The series-parallel combination means that there are both series and parallel connections among the multiple battery cells.

[0085] The battery may include a box body. A battery compartment is provided inside the box body, and the battery cells are accommodated in the battery compartment. Moreover, the battery compartment can also be used to accommodate conductive devices or components such as a high-voltage box, a connector, and a copper bar.

[0086] The battery usually can also be provided with a thermal management component, and the thermal management work for the battery cells can be realized through the thermal management component. Specifically, through the circulation of the thermal management liquid inside the thermal management component, and during the process of the thermal management liquid circulating inside the thermal management component, heat exchange is carried out with the battery cells and the like, so that thermal management work such as cooling and heating of the battery cells and the like can be realized.

[0087] However, due to reasons such as long-term use, poor quality of the thermal management component, and harsh use environment of the thermal management component, there is inevitably a risk of liquid leakage in the thermal management component. In some cases, when the thermal management component leaks liquid, there is inevitably a risk that the thermal management liquid inside the thermal management component flows into the battery compartment, thus making the reliability of the battery relatively low.

[0088] Based on the above considerations, the embodiments of the present application provide a box structure, a battery, an electrical device, and an assembly method of the box structure. By arranging at least a part of the first box wall of the box body between the battery compartment and the thermal management assembly, the first box wall is used to isolate the battery compartment and the thermal management assembly. In this way, when the thermal management assembly leaks liquid and the thermal management liquid in the flow channel flows out, the first box wall can isolate the thermal management liquid, thereby being able to improve the problem of the thermal management liquid flowing into the battery compartment. With such a setting, the risk of the thermal management assembly leaking liquid into the battery compartment can be reduced to improve the reliability of the battery.

[0089] In some embodiments, the box structure and battery related to the embodiments of the present application can be used in electrical devices powered by batteries. The electrical devices related to the embodiments of the present application can be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, vehicles, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric plane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc. Divided by power source, vehicles can be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. Divided by drive mode, vehicles can be front-wheel drive vehicles, rear-wheel drive vehicles, or four-wheel drive vehicles.

[0090] In some other embodiments, the box structure and battery related to the embodiments of the present application can also be used in energy storage devices. Among them, the energy storage device can be an energy storage container, an energy storage cabinet, etc.

[0091] For ease of description, the embodiments of the present application will be described by taking an electrical device as a vehicle as an example.

[0092] In some embodiments, please refer to Figure 1 , Figure 1 which is a schematic diagram of a vehicle 1000 provided by some embodiments of the present application. The battery 100 as described above is disposed inside the vehicle 1000, and the battery 100 can be disposed at the bottom, head, or tail of the vehicle 1000. The battery 100 can be used for power supply of the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, such as for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0093] In some embodiments, the battery 100 can not only be used as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0094] In some embodiments, please refer to Figure 2 , Figure 2 which is an exploded schematic diagram of the battery 100 provided by some embodiments of the present application. The battery 100 may include a box body 21 and a plurality of battery cells 10.

[0095] The box body 21 has a structure with a battery compartment 201 inside. The battery compartment 201 inside the box body 21 is used to accommodate the battery cells 10.

[0096] The housing 21 can adopt various structures. In some embodiments, the housing 21 can include a first part 211 and a second part 212. The first part 211 and the second part 212 cover each other and jointly define the above-mentioned battery compartment 201. Among them, the first part 211 can be a hollow structure with an opening at one end, and the second part 212 is a plate-like structure. The second part 212 covers the opening side of the first part 211 so that the first part 211 and the second part 212 jointly define the above-mentioned battery compartment 201. Or, please refer to Figure 2 , both the first part 211 and the second part 212 can be hollow structures with an opening at one end. The opening side of the first part 211 covers the opening side of the second part 212 so that the first part 211 and the second part 212 jointly define the above-mentioned battery compartment 201. Among them, the housing 21 formed by the first part 211 and the second part 212 can be of various shapes, such as a cylinder, a cuboid, etc.

[0097] In some embodiments, please refer to Figure 2 , multiple battery cells 10 can be formed into a whole through series connection, parallel connection or mixed connection, and then the whole formed by the multiple battery cells 10 is directly accommodated in the above-mentioned battery compartment 201 of the housing 21. In other embodiments, multiple battery cells 10 can also be first connected in series, parallel or in a mixed way, arranged and fixed to form a battery module, and the battery module is accommodated in the above-mentioned battery compartment 201 of the housing 21. In still other embodiments, multiple battery cells 10 can also be first connected in series, parallel or in a mixed way, arranged and fixed to form multiple battery modules, and the multiple battery modules are then connected in series, parallel or in a mixed way to form a whole and are accommodated in the above-mentioned battery compartment 201 of the housing 21.

[0098] Among them, as an example, multiple battery cells 10 can be fixed to form a battery module through cable ties or the like. As another example, multiple battery cells 10 can also be fixed to form a battery module through end plates, side plates or the like.

[0099] In some embodiments, the housing 21 of the battery 100 can be a part of the chassis structure of the vehicle 1000. For example, a part of the housing 21 can become at least a part of the chassis of the vehicle 1000, or a part of the housing 21 can become at least a part of the cross beam and longitudinal beam of the vehicle 1000.

[0100] The battery cell 10 involved in the embodiments of the present application refers to the smallest unit for storing and outputting electric energy. Among them, the battery cell 10 can be a secondary battery or a primary battery. The battery cell 10 can be but is not limited to a metal battery, a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery. The battery cell 10 can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc.

[0101] Please refer to together Figure 2 andFigure 3 and in combination with other accompanying drawings. Among them, Figure 3 FIG. 230 is a partial perspective view of the box structure 20 provided by some embodiments of the present application. The box structure 20 provided by some embodiments of the present application includes a box body 21 and a thermal management component 22. A battery compartment 201 is provided inside the box body 21. The thermal management component 22 is installed on the box body 21. The thermal management component 22 is provided with a flow channel 202, a liquid inlet 203 and a liquid outlet 204, and both the liquid inlet 203 and the liquid outlet 204 are communicated with the flow channel 202. Among them, the box body 21 is further provided with a first box wall 2111, and at least a part of the first box wall 2111 is located between the battery compartment 201 and the thermal management component 22 and is used to isolate the battery compartment 201 and the thermal management component 22.

[0102] The box body 21 refers to a structure with an inner cavity inside, and the inner cavity inside the box body 21 constitutes the battery compartment 201. In the battery 100, the battery compartment 201 is mainly used to accommodate the battery cells 10. And the battery compartment 201 can also be used to accommodate conductive devices or conductive components such as a high-voltage box, a connector, and a copper bar.

[0103] The first box wall 2111 is a solid wall of the box body 21 and is mainly used to be arranged between the battery compartment 201 and the thermal management component 22 to isolate the battery compartment 201 and the thermal management component 22. As an example, when the box body 21 is a cube, any one of the six faces of the box body 21 is arranged on the corresponding solid wall, so that the solid walls corresponding to the six faces of the box body 21 enclose to form the above-mentioned battery compartment 201. Among them, at least one of the solid walls corresponding to the six faces of the box body 21 can be the first box wall 2111. It can be understood that the box body 21 is provided with one or more first box walls 2111.

[0104] Specifically, as Figure 2 and Figure 3As shown, a heat management component 22 may be provided on one side of the box body 21 along the first direction Z. The solid wall of the box body 21 along the first direction Z facing the heat management component 22 may be the first box wall 2111, such that at least part of the heat management component 22 is located on the side of the first box wall 2111 away from the battery compartment 201 along the first direction Z, that is, at least part of the first box wall 2111 is located between the battery compartment 201 and the heat management component 22 along the first direction Z. Heat management components 22 may also be provided on both opposite sides of the box body 21 along the first direction Z. The solid walls of the box body 21 on both opposite sides along the first direction Z may also be the first box walls 2111. At least part of each side's heat management component 22 is located on the side of the corresponding first box wall 2111 away from the battery compartment 201 along the first direction Z, that is, at least part of each side's first box wall 2111 is located between the battery compartment 201 and the heat management component 22 on the corresponding side along the first direction Z. Heat management components 22 may also be provided on at least one side of the box body 21 along the second direction Y. The solid wall of the box body 21 along the second direction Y facing the heat management component 22 may also be the first box wall 2111. At least part of each side's heat management component 22 is located on the side of the corresponding first box wall 2111 away from the battery compartment 201 along the second direction Y, that is, at least part of each side's first box wall 2111 is located between the battery compartment 201 and the heat management component 22 on the corresponding side along the second direction Y. Heat management components 22 may also be provided on at least one side of the box body 21 along the third direction X. The solid wall of the box body 21 along the third direction X facing the heat management component 22 may also be the first box wall 2111. At least part of each side's heat management component 22 is located on the side of the corresponding first box wall 2111 away from the battery compartment 201 along the third direction X, that is, at least part of each side's first box wall 2111 is located between the battery compartment 201 and the heat management component 22 on the corresponding side along the third direction X. It can be understood that the heat management component 22 is located on the outer wall of the box body 21. Among them, the first direction Z is perpendicular to the second direction Y, the first direction Z is perpendicular to the third direction X, and the second direction Y is perpendicular to the third direction X.

[0105] The thermal management component 22 refers to the component structure for performing thermal management. The flow channel 202 is the channel for the thermal management liquid to flow through in the thermal management component 22. The liquid inlet 203 refers to the opening of the thermal management component 22 for the thermal management liquid to enter the flow channel 202, and the liquid outlet 204 refers to the opening of the thermal management component 22 for the thermal management liquid in the flow channel 202 to flow out. In this way, the thermal management liquid can continuously enter the flow channel 202 through the liquid inlet 203, flow in the flow channel 202, and finally flow out through the liquid outlet 204, thereby realizing the circulating flow of the thermal management liquid in the flow channel 202. Among them, during the process of the thermal management liquid flowing in the flow channel 202, the thermal management liquid can exchange heat with the battery cells 10 in the battery compartment 201, etc., thereby realizing the thermal management of the battery cells 10, etc. Among them, the thermal management liquid can be a coolant. During the process of the thermal management liquid circulating in the flow channel 202, it can exchange heat with the battery cells 10, etc., thereby realizing the cooling of the battery cells 10, etc. The thermal management liquid can also be a liquid with a certain high temperature. During the process of the thermal management liquid circulating in the flow channel 202, it can exchange heat with the battery cells 10, etc., thereby realizing the heating of the battery cells 10, etc.

[0106] The thermal management component 22 is installed on the box body 21, which means that the thermal management component 22 can be installed at any part of the box body 21. Specifically, the thermal management component 22 can be installed only on the first box wall 2111 of the box body 21; or, the thermal management component 22 can also be installed only on other components of the box body 21 except the first box wall 2111; or, the thermal management component 22 can not only be installed on the first box wall 2111, but also be installed on other components of the box wall except the first box wall 2111.

[0107] At least part of the first box wall 2111 is located between the battery compartment 201 and the thermal management component 22, and is used to isolate the battery compartment 201 and the thermal management component 22, so that the first box wall 2111 can be used to realize the liquid isolation between the battery compartment 201 and the thermal management component 22. Specifically, when the thermal management component 22 leaks, causing the thermal management liquid in the flow channel 202 to flow out of the thermal management component 22, the first box wall 2111 can isolate the thermal management liquid to prevent the thermal management liquid from flowing into the battery compartment 201 to a certain extent.

[0108] The box structure 20 provided by the embodiments of the present application has at least a part of the first box wall 2111 of the box body 21 disposed between the battery compartment 201 and the thermal management component 22, so that the first box wall 2111 is used to isolate the battery compartment 201 and the thermal management component 22. In this way, when the thermal management component 22 leaks liquid, causing the thermal management liquid in the flow channel 202 to flow out, the first box wall 2111 can isolate the thermal management liquid, thereby being able to improve the problem of the thermal management liquid flowing into the battery compartment 201. With such a setting, the risk of the thermal management component 22 leaking liquid into the battery compartment 201 can be reduced, so as to improve the reliability of the battery 100.

[0109] For ease of description, in the embodiments of the present application, the thermal management component 22 is mainly disposed on one side of the box body 21 along the first direction Z, and the solid wall of the box body 21 facing the thermal management component 22 along the first direction Z is the first box wall 2111 as an example to describe and illustrate the box structure 20, the battery 100, and the electrical device.

[0110] In some embodiments, please continue to refer to Figure 2 and Figure 3 , the second part 212 is disposed on one side of the first part 211 along the first direction Z, and the first box wall 2111 is disposed on the side of the first part 211 away from the second part 212 along the first direction Z. Specifically, the first part 211 includes a frame 2112 and the first box wall 2111, the second part 212 is disposed on one side of the frame 2112 along the first direction Z, and the first box wall 2111 is disposed on the side of the frame 2112 away from the second part 212 along the first direction Z.

[0111] Among them, the thermal management component 22 is installed on the box body 21, and it can be that the thermal management component 22 is installed on at least one of the first box wall 2111 and other components of the box body 21 except the first box wall 2111.

[0112] Among them, other components of the box body 21 except the first box wall 2111 may include a frame 2112 and a second part 212.

[0113] In some embodiments, the material of the first box wall 2111 is selected as aluminum material, so that the first box wall 2111 can better achieve liquid isolation between the battery compartment 201 and the thermal management component 22.

[0114] In some embodiments, the box body 21 and the thermal management component 22 are detachably connected.

[0115] It can be understood that the thermal management component 22 is detachably connected to at least one of the first box wall 2111 of the box body 21 and other components of the box body 21 except the first box wall 2111. Specifically, the thermal management component 22 is detachably connected to at least one of the frame 2112 of the box body 21, the first box wall 2111, and the second part 212.

[0116] In this configuration, the thermal management component 22 is located on the side of the first box wall 2111 away from the battery compartment 201, that is, the thermal management component 22 is located outside the outer wall of the box body 21; and the thermal management component 22 is connected to the box body 21 and can be removed from the box body 21. In this way, it is convenient to install and remove the thermal management component 22 on the box body 21, and further facilitate the maintenance and replacement operations of the thermal management component 22, so as to improve the convenience of use of the box structure 20.

[0117] In some embodiments, please refer to Figures 4 to 6 , and combined with other drawings. Among them, Figure 4 for Figure 3 The exploded schematic diagram of the box structure 20 is shown, Figure 5 for Figure 3 Partial cross-section along AA, Figure 6 for Figure 5 The thermal management assembly 22 includes a thermal management component 221, and the flow channel 202 is disposed in the thermal management component 221. At least a portion of the thermal management component 221 is located on a side of the first box wall 2111 away from the battery compartment 201, and is connected to the box body 21.

[0118] The thermal management component 221 is a component of the thermal management assembly 22 provided with the flow channel 202 .

[0119] The heat management component 221 is connected to the box body 21 , and may be connected to the first box wall 2111 of the box body 21 or at least one of other components of the box body 21 except the first box wall 2111 .

[0120] The heat management component 221 may be fixedly connected to the box body 21 or detachably connected thereto.

[0121] The thermal management component 221 is connected to the housing 21, so that the relative position between the thermal management component 221 and the housing 21 can be fixed, and further the relative position between the flow channel 202 of the thermal management component 221 and the battery compartment 201 can be fixed. Based on this, when the thermal management liquid circulates in the flow channel 202, the thermal management component 221 can stably exchange heat with the battery cells 10 in the battery compartment 201, so as to stably achieve thermal management of the battery 100.

[0122] In some embodiments, please refer to Figures 4 to 6, and in combination with other attached drawings. The heat management component 221 is adhered to the first box wall 2111.

[0123] Understandably, there is an adhesive layer 222 between the heat management component 221 and the first box wall 2111. On the opposite sides of the adhesive layer 222, one side is arranged towards the heat management component 221 and adhered to the heat management component 221; the other side is arranged towards the first box wall 2111 and adhered to the first box wall 2111. In this way, the heat management component 221 is adhered to the first box wall 2111 through the adhesive layer 222.

[0124] Among them, the adhesive layer 222 refers to a structural layer with adhesive properties. Specifically, the adhesive layer 222 refers to a structural layer composed of an adhesive.

[0125] With such a setting, the heat management component 221 is adhered to the first box wall 2111 through the adhesive layer 222 to be connected to the first box wall 2111. And only the adhesive layer 222 can be provided between the heat management component 221 and the first box wall 2111, so that the heat management component 221 can be very close to the first box wall 2111, and further the heat management component 221 can be very close to the battery compartment 201. In this way, the heat transfer path between the battery compartment 201 and the heat management liquid inside the heat management component 221 is short, which is conducive to the rapid transfer of heat, thereby facilitating the improvement of the heat exchange efficiency between the heat management liquid in the heat management component 221 and the battery cells 10 etc. inside the battery compartment 201, and thus the heat management efficiency of the battery 100 can be improved.

[0126] In addition, the heat management component 221 is adhered to the first box wall 2111 through the adhesive layer 222, so that a detachable connection can be realized between the heat management component 221 and the first box wall 2111. In this way, it is convenient for the installation and disassembly of the heat management component 221 on the box body 21, and it is convenient for the maintenance and replacement of the heat management component 221.

[0127] Understandably, the heat management component 221 and the box body 21 can also be connected in other forms.

[0128] As an example, when the box body 21 is provided with a buckle and the heat management component 221 is located on the side of the first box wall 2111 away from the battery compartment 201, the side of the heat management component 221 away from the battery compartment 201 can be elastically buckled by the buckle to realize the connection between the heat management component 221 and the box body 21.

[0129] As another example, the heat management component 221 can be tied to the side of the first box wall 2111 away from the battery compartment 201 through a strapping band.

[0130] In some embodiments, please refer to Figures 4 to 6, and in combination with other attached drawings. A glue layer 222 is provided between the heat management component 221 and the first box wall 2111, and the glue layer 222 includes a thermally conductive structural glue layer 222.

[0131] The glue layer 222 in this embodiment is the same as the glue layer 222 in the above embodiments, and will not be repeated here.

[0132] The thermally conductive structural glue layer 222 refers to a structural layer composed of thermally conductive structural glue.

[0133] As an example, the thermally conductive structural glue can be composed of a thermally conductive material, a filler material, and an adhesive. The thermally conductive material can be at least one of silica gel, rubber, polycarbonate, metal filler, and other thermally conductive materials. The filler material can be at least one of materials such as calcium carbonate, gypsum, acrylic particles, graphite powder, iron oxide powder, zinc oxide powder, etc. The adhesive can be at least one of polyurethane, alkyl rubber, and silica gel.

[0134] With such a setting, the glue layer 222 is located between the first box wall 2111 and the heat management component 221, and is bonded to the first box wall 2111 and the heat management, realizing the connection between the first box wall 2111 and the heat management component 221, thereby being able to improve the reliability and stability of the relative position between the heat management component 221 and the first box wall 2111. And, since the glue layer 222 is a thermally conductive structural glue layer, the glue layer 222 has good thermal conductivity, which can improve the heat conduction efficiency between the heat management liquid in the flow channel 202 and the battery cells 10 in the battery compartment 201, etc. Based on this, the heat exchange performance between the heat management liquid in the flow channel 202 and the battery cells 10 in the battery compartment 201, etc. can be improved to improve the heat management efficiency of the heat management liquid in the flow channel 202 for the battery 100.

[0135] In some embodiments, please refer to Figures 4 to 6 , and in combination with other attached drawings. The heat management assembly 22 includes a mounting structure 223 and a heat management component 221. The mounting structure 223 is connected to the box body 21. The heat management component 221 is mounted on the mounting structure 223, and at least part of the heat management component 221 is located on the side of the first box wall 2111 away from the battery compartment 201. The flow channel 202 is provided in the heat management component 221.

[0136] It should be noted here in advance that the heat management component 221 in this embodiment is the same as the heat management component 221 in other embodiments of the present application, and will not be repeated here.

[0137] The installation structure 223 refers to the structure for installing the thermal management component 221 on the box body 21. The installation structure 223 is connected to the box body 21, and it can be that the installation structure 223 is connected to at least one of the first box wall 2111 and other components of the box body 21 except the first box wall 2111. Among them, the installation structure 223 is detachably or fixedly connected to the box body 21.

[0138] By installing the thermal management component 221 on the installation structure 223 and connecting the installation structure 223 to the box body 21, the thermal management assembly 22 is installed on the box body 21.

[0139] In some embodiments, please refer to Figures 4 to 7 together and in combination with other drawings. Among them, Figure 7 is a partial three-dimensional structure diagram of the thermal management assembly 22 provided by some embodiments of the present application. The installation structure 223 is provided with an installation groove 205, and at least part of the thermal management component 221 is installed in the installation groove 205.

[0140] The installation groove 205 refers to the groove on the installation structure 223 for installing the thermal management component 221. Specifically, as Figures 4 to 7 shown, at least part of the thermal management component 221 is arranged in the installation groove 205, so that the installation groove 205 can limit the thermal management component 221 to realize the positioning of the thermal management component 221 on the installation structure 223.

[0141] With such a setting, on the basis that the installation structure 223 is connected to the box body 21, by installing at least part of the thermal management component 221 in the installation groove 205, the positioning of the thermal management component 221 on the installation structure 223 can be realized, which can improve the stability and reliability of the relative position between the thermal management component 221 and the box body 21. Therefore, it is convenient for the thermal management liquid in the thermal management component 221 to stably exchange heat with the battery cells 10 in the battery compartment 201, etc., so as to stably perform thermal management on the battery 100.

[0142] In some embodiments, please refer to Figures 4 to 7 together and in combination with other drawings. The installation groove 205 is arranged on one side of the installation structure 223 facing the first box wall 2111.

[0143] With such a setting, on the one hand, the heat management component 221 can be installed in the installation groove 205 from the side of the installation structure 223 facing the first box wall 2111, which is convenient for the installation of the heat management component 221 in the installation groove 205. On the other hand, by arranging the installation groove 205 on the side of the installation structure 223 facing the first box wall 2111, after the heat management component 221 is installed in the installation groove 205, the side of the heat management component 221 facing the first box wall 2111 can be closer to the first box wall 2111, so as to facilitate the heat exchange between the heat management liquid in the heat management component 221 and the battery cells 10 in the battery compartment 201, etc., and is also convenient for improving the efficiency of the heat management assembly 22 to manage the heat of the battery 100. In addition, it is also convenient to arrange an adhesive layer 222 between the side of the heat management component 221 facing the first box wall 2111 and the first box wall 2111 to realize the bonding between the heat management component 221 and the first box wall 2111, thereby improving the fixing stability and reliability of the heat management component 221 on the box body 21.

[0144] In some embodiments, please refer to Figures 4 to 8 together and in combination with other drawings. Among them, Figure 8 is Figure 5 an enlarged view of the C position in

[0145] The installation structure 223 includes an installation member 2231 and a filling member 2232. The installation member 2231 is connected to the box body 21. The filling member 2232 is arranged on the installation member 2231 and defines the installation groove 205.

[0145] The installation member 2231 refers to the component of the installation structure 223 for connecting with the box body 21. The connection between the installation member 2231 and the box body 21 can be that the installation member 2231 is connected to at least one of the first box wall 2111 of the box body 21 and other components of the box body 21 except the box wall. As an example, as Figure 8 shown, the installation member 2231 is connected to the first box wall 2111 and the frame 2112 of the box body 21.

[0146] Among them, the installation member 2231 is fixedly connected or detachably connected to the box body 21.

[0147] The filling member 2232 refers to the component filled on the installation member 2231 to define the installation groove 205. Among them, the filling member 2232 is arranged on the installation member 2231 to define the installation groove 205, so that it is convenient for the formation of the installation groove 205 of the installation structure 223, and is beneficial to the installation and positioning of the heat management component 221 on the installation structure 223.

[0148] Among them, the filling member 2232 can be a structure composed of foaming materials, plastics, metals, etc.

[0149] In some embodiments, please refer to Figures 4 to 8, and in combination with other drawings. The mounting structure 223 includes a mounting member 2231 and a filling member 2232. The mounting member 2231 is connected to the box body 21. The filling member 2232 is disposed on the mounting member 2231, and at least a part of the filling member 2232 abuts between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231.

[0150] Among them, the mounting member 2231 in this embodiment is the same as the mounting member 2231 provided in the above embodiment, and will not be repeated here.

[0151] The filling member 2232 refers to a member disposed on the mounting member 2231 for abutting between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231.

[0152] Among them, the filling member 2232 may be a structure composed of materials such as foaming materials, plastics, metals, etc.

[0153] At least a part of the filling member 2232 abuts between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231, which means that at least a part of the filling member 2232 is located between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231, and the side of the filling member 2232 facing the heat management component 221 abuts against the side of the heat management component 221 away from the first box wall 2111, and the side of the filling member 2232 facing the mounting member 2231 abuts against the mounting member 2231.

[0154] With such a setting, at least a part of the filling member 2232 is located between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231, so as to provide a certain buffering and protecting effect on the heat management component 221. Specifically, when the mounting member 2231 is subjected to an external force impact, a certain buffering can be achieved through the setting of the filling member 2232 to slow down the transmission of the external force impact to the heat management component 221, thereby improving the situation that the heat management component 221 bursts due to a large external force impact.

[0155] Based on the above structure, it can be understood that the filler 2232 defines an installation groove 205, at least a part of the thermal management component 221 is installed in the installation groove 205, and at least a part of the filler 2232 abuts between the side of the thermal management component 221 away from the first box wall 2111 and the installation member 2231. In this way, the filler 2232 can wrap the thermal management component 221 to a large extent. On the one hand, it can buffer and protect the thermal management component 221 to reduce the risks such as bursting and deformation of the thermal management component 221. On the other hand, it can position the thermal management component 221, which can improve the stability and reliability of the relative position between the thermal management component 221 and the box body 21, facilitating the stable heat exchange between the thermal management liquid in the thermal management component 221 and the battery cells 10 in the battery compartment 201, etc., so as to stably perform thermal management on the battery 100, thereby improving the thermal management effect. On the other hand, it can play a role in heat preservation for the thermal management component 221, and further can play a role in heat preservation for the thermal management liquid in the thermal management component 221, thereby improving the thermal management effect and stability of the thermal management component 221 on the battery 100.

[0156] In some embodiments, the filler 2232 is a foamed material part.

[0157] Among them, the foamed material can be but is not limited to polystyrene, polyurethane foamed material, polyethylene foamed material, sponge, etc.

[0158] With such a setting, it is convenient for the filler 2232 to be installed on the installation structure 223, facilitating the molding of the thermal management component 221. Moreover, the foamed material has high structural strength and heat preservation performance, so as to achieve better positioning, heat preservation and buffer protection effects on the thermal management component 221.

[0159] In some embodiments, please refer to Figure 4 and Figure 8 together, and in combination with other drawings. The installation structure 223 is fixed to the box body 21 by fasteners 23.

[0160] It can be understood that the fasteners 23 pass through the installation structure 223 and the box body 21 in sequence, thereby realizing the connection between the installation structure 223 and the box body 21. As an example, as Figure 8 shown, the fasteners 23 pass through the installation member 2231, the first box wall 2111 and the frame 2112 of the installation structure 223 in sequence, thereby realizing the relative fixation of the installation member 2231, the first box wall 2111 and the frame 2112.

[0161] Among them, the fasteners 23 can be components with fastening functions such as bolts and rivets.

[0162] With such a setting, a detachable connection between the mounting structure 223 and the box body 21 can be achieved, so as to realize the installation of the heat management component 221 on the box body 21.

[0163] In some embodiments, please refer to Figures 4 to 8 together with other drawings. The heat management component 221 is installed in the mounting structure 223 and is located on the side of the mounting structure 223 facing the first box wall 2111. The fastener 23 sequentially passes through the mounting structure 223 and the box body 21, and a sealing ring 224 is sleeved on the outer periphery of the fastener 23. The sealing ring 224 seals the connection between the box body 21 and the mounting structure 223.

[0164] It can be understood that the heat management component 221 is located between the mounting structure 223 and the first box wall 2111. Moreover, the part of the mounting structure 223 located on the outer periphery of the heat management component 221 is fixed to the box body 21 through the fastener 23. Specifically, the fastener 23 sequentially passes through the part of the mounting structure 223 located on the outer periphery of the heat management component 221 and the box body 21, so that the mounting structure 223 and the box body 21 are detachably connected through the fastener 23.

[0165] As an example, as Figure 8 shown, the fastener 23 sequentially passes through the part of the mounting member 2231 located on the outer periphery of the heat management component 221, the first box wall 2111 and the frame 2112, so that the mounting member 2231, the first box wall 2111 and the frame 2112 are connected through the fastener 23, thereby realizing the connection between the heat management component 221 and the box body 21.

[0166] The sealing ring 224 refers to a ring-shaped structure with sealing performance. For example, the sealing ring 224 can be a rubber ring, a silica gel ring, etc.

[0167] The sealing ring 224 seals the connection between the box body 21 and the mounting structure 223. In some possible designs, the sealing ring 224 is located between the first box wall 2111 of the box body 21 and the mounting member 2231 of the mounting structure 223, and the opposite ends of the sealing ring 224 abut against the first box wall 2111 and the mounting member 2231. In some other possible designs, as Figure 8 shown, the sealing ring 224 is located between the first box wall 2111 of the box body 21 and the frame 2112 of the box body 21, and the opposite ends of the sealing ring 224 abut against the first box wall 2111 and the frame 2112.

[0168] With such a setting, the sealing ring 224 can seal the connection between the box body 21 and the mounting structure 223, and can improve the problem that the heat management liquid in the heat management component 221 leaks to the outside when leaking.

[0169] Based on the above structure, it can be understood that the mounting member 2231 of the thermal management component 22 is installed on the box body 21 through the fastener 23, and the thermal management component 221 of the thermal management component 22 is bonded to the first box wall 2111 through the thermal conductive structural adhesive layer 222, thus realizing the detachable connection between the thermal management component 22 and the box body 21. Based on this, the mounting member 2231, the thermal management component 221, the filling member 2232 and the adhesive layer 222 form an integral structure, which is convenient for the replacement and maintenance of the thermal management component 22. In addition, on the one hand, the heat exchange efficiency between the thermal management liquid in the thermal management component 221 and the battery cells 10 in the battery compartment 201 can be improved, thereby improving the thermal management efficiency of the thermal management component 22 for the battery 100. On the other hand, the thermal management component 22 as a whole and the first box wall 2111 can serve as the bottom plate of the box structure 20 of the battery 100 as a whole, thereby improving the overall structural strength of the box structure 20.

[0170] In some embodiments, please refer to Figures 4 to 7 together and in combination with other drawings. The thermal management component 221 is tubular. Alternatively, the thermal management component 221 is plate-shaped.

[0171] Wherein, when the thermal management component 221 is tubular, as Figures 4 to 7 shown, the thermal management component 221 can be bent and extended, and the flow channel 202 extends along with the bending of the thermal management component 221.

[0172] When the thermal management component 221 is plate-shaped, the flow channel 202 in the thermal management component 221 can be bent and extended, or can be not set to a bent and extended shape.

[0173] Such a setting makes the design of the thermal management component 221 very flexible.

[0174] As an example, as Figures 4 to 7 shown, when the thermal management component 221 is tubular, the mounting groove 205 can be a tubular groove. Of course, the shape of the mounting groove 205 can also not be tubular.

[0175] In some embodiments, please refer to Figures 4 to 7 together and in combination with other drawings. The side of the first box wall 2111 away from the battery compartment 201 is perpendicular to the first direction Z. The flow channel 202 is bent and extended, and the extension direction of the flow channel 202 intersects with the first direction Z.

[0176] The extending direction of the flow channel 202 intersects with the first direction Z, which means that these two directions are not parallel, that is, these two directions can form an angle greater than 0° and less than 180°. The extending direction of the flow channel 202 and the first direction Z can be perpendicular to each other, or can be non-perpendicular. The extending direction of the flow channel 202 and the first direction Z can be directions intersecting on the same plane, or can be directions on planes that are skew to each other, and the projection of the first direction on the plane where the extending direction of the flow channel 202 is located can intersect with the extending direction of the flow channel 202.

[0177] As an example, as Figures 4 to 7 shown, the extending direction of the flow channel 202 is perpendicular to the first direction Z, that is, the extending direction of the flow channel 202 is parallel to the side of the first box wall 2111 away from the battery compartment 201.

[0178] With such a setting, the entire flow channel 202 can be very close to the first box wall 2111, and thus can be very close to the battery compartment 201. Based on this, the heat transfer path between the battery compartment 201 and the heat management component 221 can be shortened, which is beneficial to the rapid transfer of heat. And, the area of the flow channel 202 opposite to the first box wall 2111 can also be increased. In this way, the heat exchange efficiency between the heat management liquid in the flow channel 202 and the battery cells 10 in the battery compartment 201 and the like can be improved, so as to improve the heat management efficiency of the heat management assembly 22 for the battery 100.

[0179] Among them, the liquid inlet 203 can be arranged on the heat management component 221. Or, the liquid inlet 203 can also be arranged on the mounting member 2231. Or, as Figure 4 and Figure 7 shown, the heat management assembly 22 further includes a first pipe joint 225. The first pipe joint 225 is installed on the mounting member 2231, and is communicated with one end opening of the flow channel 202, and the liquid inlet 203 is arranged at the end of the first pipe joint 225 away from the flow channel 202.

[0180] Correspondingly, the liquid outlet 204 can be arranged on the heat management component 2221. Or, the liquid outlet 204 can also be arranged on the mounting member 2231. Or, as Figure 4 and Figure 7 shown, the heat management assembly 22 further includes a second pipe joint 226. The second pipe joint 226 is installed on the mounting member 2231, and is communicated with the other end opening of the flow channel 202, and the liquid outlet 204 is arranged at the end of the second pipe joint 226 away from the flow channel 202.

[0181] Please refer to Figure 2 , and in combination with other drawings. The battery 100 provided by the embodiment of the present application includes a box structure 20. Among them, the box structure 20 in this embodiment is the same as the box structure 20 in the previous embodiment. For specific details, please refer to the relevant description of the box structure 20 in the previous embodiment, which will not be elaborated here.

[0182] The battery 100 further includes battery cells 10, and the battery cells 10 are accommodated in the battery compartment 201 of the box structure 20.

[0183] For the battery 100 provided by the embodiment of the present application, by adopting the box structure 20 involved above, the risk of leakage of the thermal management component 22 into the battery compartment 201 can be reduced, so as to improve the reliability of the battery 100.

[0184] Please refer to Figure 1 , and in combination with other drawings. The electrical device provided by the embodiment of the present application includes the box structure 20 or the battery 100. Among them, the box structure 20 and the battery 100 in this embodiment are the same as those in the previous embodiment. For specific details, please refer to the relevant descriptions of the box structure 20 and the battery 100 in the previous embodiment, which will not be elaborated here.

[0185] For the electrical device provided by the embodiment of the present application, by adopting the box structure 20 or the battery 100 involved above, the risk of leakage of the thermal management component 22 into the battery compartment 201 can be reduced, so as to improve the reliability of the battery 100, and further improve the reliability of the electrical device.

[0186] Please refer to Figure 9 , and in combination with other drawings. Figure 9 FIG. is a flowchart of a method for assembling the box structure 20 provided by some embodiments of the present application. The method for assembling the box structure 20 provided by the embodiment of the present application is applied to the box structure 20. Among them, the box structure 20 in this embodiment is the same as that in the previous embodiment. For specific details, please refer to the relevant descriptions of the box structure 20 in the previous embodiment, which will not be elaborated here.

[0187] As Figure 9 shown, the method for assembling the box structure 20 provided by the embodiment of the present application includes the following steps:

[0188] S10: Install the thermal management component 22 on a side of the first box wall 2111 of the box body 21 away from the battery compartment 201.

[0189] For the method for assembling the box structure 20 provided by the embodiment of the present application, by installing the thermal management component 22 on a side of the first box wall 2111 of the box body 21 away from the battery compartment 201, at least part of the first box wall 2111 is located between the thermal management component 22 and the battery compartment 201 to isolate the battery compartment 201 and the thermal management component 22. In this way, when the thermal management component 22 leaks, causing the thermal management liquid in the flow channel 202 to flow out, the first box wall 2111 can isolate the thermal management liquid, thereby being able to improve the problem of the thermal management liquid flowing into the battery compartment 201. With such a setting, the risk of leakage of the thermal management component 22 into the battery compartment 201 can be reduced, so as to improve the reliability of the battery 100.

[0190] In some embodiments, refer to Figure 10 , and in combination with other drawings. Among them, Figure 10 This is a flowchart of a method for assembling the box structure 20 provided in some other embodiments of the present application. Before step S10 of installing the thermal management component 22 on the side of the first box wall 2111 of the box body 21 away from the battery compartment 201, the following steps are included:

[0191] S20. Provide a thermally conductive structural adhesive layer 222 on at least one of the side of the thermal management component 221 facing the first box wall 2111 and the side of the first box wall 2111 away from the battery compartment 201;

[0192] It can be understood that the thermally conductive structural adhesive layer 222 can be provided only on the side of the thermal management component 221 facing the first box wall 2111; or the thermally conductive structural adhesive layer 222 can be provided only on the side of the first box wall 2111 away from the battery compartment 201; or the thermally conductive structural adhesive layer 222 can be provided on both the side of the thermal management component 221 facing the first box wall 2111 and the side of the first box wall 2111 away from the battery compartment 201.

[0193] Step 10 of installing the thermal management component 22 on the side of the first box wall 2111 of the box body 21 away from the battery compartment 201 includes the following steps:

[0194] S11. Bond the thermal management component 221 to the side of the first box wall 2111 away from the battery compartment 201 through the thermally conductive structural adhesive layer 222.

[0195] In this step, the thermal management component 221 can be attached to the side of the first box wall 2111 away from the battery compartment 201, so that the thermally conductive structural adhesive layer 222 is located between the thermal management component 221 and the first box wall 2111, and is bonded to the first box wall 2111 and the thermal management component 221, thereby realizing the bonding of the thermal management component 221 to the first box wall 2111.

[0196] With such a setting, the adhesive layer 222 is located between the first box wall 2111 and the thermal management component 221, and is bonded to the first box wall 2111 and the thermal management, realizing the connection between the first box wall 2111 and the thermal management component 221, thereby improving the reliability and stability of the relative position between the thermal management component 221 and the first box wall 2111. Moreover, since the adhesive layer 222 is a thermally conductive structural adhesive layer 222, the adhesive layer 222 has good thermal conductivity, which can improve the heat conduction efficiency between the thermal management liquid in the flow channel 202 and the battery cells 10 in the battery compartment 201, etc. Based on this, the heat exchange performance between the thermal management liquid in the flow channel 202 and the battery cells 10 in the battery compartment 201, etc. can be improved to improve the thermal management efficiency of the thermal management liquid in the flow channel 202 for the battery 100.

[0197] In some embodiments, please refer to Figure 11 , and in combination with other drawings. Among them, Figure 11 This is a flowchart of the assembly method of the box structure 20 provided by some other embodiments of the present application. Before step S20 of setting the thermally conductive structural adhesive layer 222 on at least one of the side of the thermal management component 221 facing the first box wall 2111 and the side of the first box wall 2111 away from the battery compartment 201, the following steps are included:

[0198] S30. Place the thermal management component 221 in the mounting member 2231 and located on the side of the mounting member 2231 facing the first box wall 2111;

[0199] In this step, the side of the thermal management component 221 facing the first box wall 2111 can be exposed, so that it can be bonded to the first box wall 2111 through the thermally conductive structural adhesive layer 222.

[0200] S40. Set a foaming material in the mounting member 2231 so that after the foaming material foams, it forms a filling member 2232;

[0201] In this step, the foaming material is fixed in the mounting member 2231 after foaming and wraps the thermal management component 221. Based on this, at least part of the thermal management component 221 is installed in the installation groove 205 defined by the foaming material, and at least part of the filling member 2232 is located between the side of the thermal management component 221 away from the first box wall 2111 and the mounting member 2231.

[0202] The step of installing the thermal management assembly 22 on the side of the first box wall 2111 of the box body 21 away from the battery compartment 201 in step S10 further includes the following steps:

[0203] S12. Detachably fix the mounting member 2231 to the box body 21 through the fastener 23.

[0204] In this step, the fastener 23 passes through the mounting member 2231 and the box body 21 in sequence, so as to realize the connection between the mounting member 2231 and the box body 21. Among them, during the process of detachably fixing the mounting member 2231 to the box body 21 through the fastener 23, the thermal management component 221 can be bonded to the first box wall 2111 through the thermally conductive structural adhesive layer 222.

[0205] Among them, the fastener 23 can pass through at least one of the mounting member 2231, the first box wall 2111 of the box body 21, and other components of the box body 21 except the first box wall 2111, so as to realize the connection between the mounting member 2231 and the box body 21. Among them, other components of the box body 21 except the first box wall 2111 may include the above-mentioned frame 2112 and the second part 212.

[0206] By adopting the above technical solution, on the one hand, through the arrangement of the foaming material, the filling member 2232 can buffer and protect the heat management component 221, so as to reduce the risks such as bursting and deformation of the heat management component 221. The filling member 2232 can also position the heat management component 221, which can improve the stability and reliability of the relative position between the heat management component 221 and the box body 21, and facilitate the stable heat exchange between the heat management liquid in the heat management component 221 and the battery cells 10 in the battery compartment 201, etc., so as to stably conduct heat management on the battery 100, thereby improving the heat management effect. The filling member 2232 can also play a role in heat preservation for the heat management component 221, and further can play a role in heat preservation for the heat management liquid in the heat management component 221, so as to improve the heat management effect and stability of the heat management component 221 on the battery 100.

[0207] On the other hand, by the mounting member 2231 being detachably fixed to the box body 21 through the fastener 23, the connection reliability between the heat management assembly 22 and the box body 21 can be improved, and it also helps to improve the overall structural strength of the box structure 20. Moreover, the setting of the detachable connection facilitates the maintenance and replacement of the heat management assembly 22.

[0208] As one embodiment of the present application, as shown in the figure, the battery 100 includes a box structure 20 and battery cells 10, and the box structure 20 includes a box body 21 and a heat management assembly 22. A battery compartment 201 is provided inside the box body 21, and the battery cells 10 are accommodated in the battery compartment 201. One side of the box body 21 is provided with a first box wall 2111, and at least a part of the first box wall 2111 is located between the heat management assembly 22 and the battery compartment 201 to isolate the battery compartment 201 and the heat management assembly 22. The heat management assembly 22 includes a heat management component 221, a mounting member 2231, a filling member 2232 and an adhesive layer 222. The heat management component 221, the mounting member 2231, the filling member 2232 and the adhesive layer 222 are all located outside the side of the first box wall 2111 away from the battery compartment 201. The material of the filling member 2232 is selected as a foaming material, and the material of the adhesive layer 222 is selected as a thermally conductive structural adhesive. The filling member 2232 is installed in the mounting member 2231 and is located on the side of the mounting member 2231 facing the first box wall 2111 to define an installation groove 205. At least a part of the heat management component 221 is installed in the installation groove 205, and at least a part of the filling member 2232 is located between the side of the heat management component 221 away from the first box wall 2111 and the mounting member 2231. The adhesive layer 222 is located between the heat management component 221 and the side of the first box wall 2111 away from the battery compartment 201, and the heat management component 221 is bonded to the first box wall 2111 through the adhesive layer 222. The mounting member 2231 is connected to the box body 21 through the fastener 23, and a sealing ring 224 for achieving sealing is provided at the connection between the mounting member 2231 and the box body 21.

[0209] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A box structure, characterized in that, Comprising: A box body with a battery compartment inside. A thermal management component installed in the box body and having a flow channel, a liquid inlet, and a liquid outlet, wherein both the liquid inlet and the liquid outlet communicate with the flow channel. Wherein, the box body further has a first box wall, at least part of the first box wall is located between the battery compartment and the thermal management component, and is used to isolate the battery compartment and the thermal management component.

2. The box structure according to claim 1, wherein The box body and the thermal management component are detachably connected.

3. The box structure according to claim 1 or 2, characterized in that, The thermal management component includes a thermal management part, and the flow channel is arranged in the thermal management part; at least part of the thermal management part is located on the side of the first box wall away from the battery compartment and is connected to the box body.

4. The box structure according to claim 3, wherein The thermal management part is adhered to the first box wall.

5. The box structure according to claim 4, wherein, There is an adhesive layer between the thermal management part and the first box wall, and the adhesive layer includes a thermally conductive structural adhesive layer.

6. The box structure according to any one of claims 1-5, characterized in that, The thermal management component includes: An installation structure connected to the box body; A thermal management part installed in the installation structure and at least part of which is located on the side of the first box wall away from the battery compartment; the flow channel is arranged in the thermal management part.

7. The box structure according to claim 6, wherein The installation structure has an installation groove, and at least part of the thermal management part is installed in the installation groove.

8. The box structure according to claim 7, characterized in that, The installation groove is arranged on the side of the installation structure facing the first box wall.

9. The box structure according to claim 7 or 8, characterized in that, The installation structure includes: An installation part connected to the box body; A filling part arranged in the installation part and defining the installation groove.

10. The box structure according to any one of claims 6-9, characterized in that, The installation structure includes: An installation part connected to the box body; A filling part arranged in the installation part and at least part of which abuts between the side of the thermal management part away from the first box wall and the installation part.

11. The box structure according to claim 9 or 10, characterized in that, The filling part is a foamed material part.

12. The box structure according to any one of claims 6-11, characterized in that, The installation structure and the box body are fixed by fasteners.

13. The box structure according to claim 12, characterized in that, The thermal management part is installed in the installation structure and is located on the side of the installation structure facing the first box wall; the fastener sequentially passes through the installation structure and the box body, and a sealing ring is sleeved on the outer periphery of the fastener, and the sealing ring seals the connection between the box body and the installation structure.

14. The box structure according to any one of claims 3-13, characterized in that, The thermal management part is in a plate shape or a tubular shape.

15. The box structure according to any one of claims 1-14, characterized in that, The side of the first box wall away from the battery compartment is perpendicular to the first direction, the flow channel is bent and extends, and the extending direction of the flow channel intersects with the first direction.

16. A battery, characterized in that, Including the box structure according to any one of claims 1-15.

17. An electrical device, characterized in that, Including the box structure according to any one of claims 1-15; or, including the battery according to claim 16.

18. An assembly method for a box structure, characterized in that, Applied to the box structure according to any one of claims 1-15, the assembly method of the box structure includes: Installing the thermal management component on the side of the first box wall of the box body away from the battery compartment.

19. The assembling method of the box structure according to claim 18, characterized in that, Before installing the thermal management component on the side of the first box wall of the box body away from the battery compartment, it includes: Setting a thermally conductive structural adhesive layer on at least one of the side of the thermal management part facing the first box wall and the side of the first box wall away from the battery compartment; Installing the thermal management component on the side of the first box wall of the box body away from the battery compartment includes: Adhering the thermal management part to the side of the first box wall away from the battery compartment through the thermally conductive structural adhesive layer.

20. The assembling method of the box structure according to claim 19, characterized in that, Before providing a thermally conductive structural adhesive layer on at least one of the side of the thermal management component facing the first box wall and the side of the first box wall away from the battery compartment, it includes: Placing the thermal management component in the mounting member and on the side of the mounting member facing the first box wall; Providing a foaming material in the mounting member so that after foaming, the foaming material forms a filling member; The step of mounting the thermal management assembly on the side of the first box wall of the box body away from the battery compartment further includes: Detachably fixing the mounting member to the box body by fasteners.

Images