Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box body and a battery monomer, an assembling cavity is formed in the box body. And the battery monomers are accommodated in the assembly cavities. The box body is provided with a first wall, the first wall comprises a heat management part used for managing the temperature of the battery monomers, a flow channel is formed in the heat management part, the flow channel is used for accommodating a heat exchange medium, the heat management part is provided with a connector, the connector is communicated with the flow channel, and the connector is located outside the assembly cavity. According to the battery, on one hand, the joint can be conveniently butted with other parts so as to reduce the assembly difficulty of the battery and the maintenance difficulty of the joint, and on the other hand, the available space in the box body can be expanded, so that the utilization rate of the internal space of the box body is improved; and the phenomenon that the heat exchange medium enters the assembly cavity can be relieved when leakage occurs at the connecting position of the connector and the circulation and at the connecting position of the connector and other components, so that the short-circuit risk of the battery in the using process is reduced.

Description

Technical Field

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

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. The battery consists of a box and a battery cell contained in the box. As a core component of new energy vehicles, batteries have high requirements in terms of service life and reliability. Among them, the battery cells in the battery will generate a lot of heat during the continuous charging and discharging process. Therefore, a thermal management component for adjusting the temperature of the battery cells will be set in the battery box to alleviate the temperature rise inside the battery. However, the existing batteries are prone to leakage during use, which may lead to risks such as short circuits in the battery, which is not conducive to improving the reliability of the battery. Utility Model Content

[0003] The embodiments of the present application provide a battery and an electrical device, which can effectively improve the reliability of the battery.

[0004] In a first aspect, an embodiment of the present application provides a battery, comprising a case and a battery cell; an assembly cavity is formed inside the case; the battery cell is accommodated in the assembly cavity; wherein the case has a first wall, the first wall includes a thermal management component for managing the temperature of the battery cell, a flow channel is formed inside the thermal management component, the flow channel is used to accommodate a heat exchange medium, the thermal management component is provided with a joint, the joint is connected to the flow channel, and the joint is located outside the assembly cavity.

[0005] In the above technical solution, the first wall of the box body includes a heat management component, and a flow channel for accommodating a heat exchange medium is formed inside the heat management component, so that the heat management component is a structure integrated on the box body, so that the heat management component is a part of the first wall of the box body, so that heat exchange with the battery monomer accommodated in the assembly cavity can be achieved through the heat management component, so that the box body can be simplified and lightened while managing the temperature of the battery monomer, and thus the weight of the battery can be reduced while reducing the risk of temperature rise during use of the battery. Among them, by arranging the joint connected to the flow channel to be located outside the assembly cavity of the box body, so that the connection position of the joint and the flow and the connection position of the joint and other components are both located outside the assembly cavity, the battery adopting this structure is convenient for the joint to be docked and assembled with other components on the one hand, so as to reduce the difficulty of assembling the battery, and can reduce the difficulty of subsequent maintenance of the joint, so as to reduce the later maintenance cost of the battery, and on the other hand, it can expand the available space inside the box body, which is conducive to improving the internal space utilization rate of the box body, and when leakage occurs at the connection position of the joint and the flow and the connection position of the joint and other components, it can alleviate the phenomenon of heat exchange medium entering the assembly cavity, so as to reduce the short circuit risk of the battery during use, which is conducive to improving the reliability of the battery.

[0006] In some embodiments, along the thickness direction of the thermal management component, the thermal management component has a first surface and a second surface that are oppositely disposed, the first surface forms a part of the cavity wall of the assembly cavity, and the joint is connected to the second surface.

[0007] In the above technical solution, by connecting the connector to the second surface of the thermal management component away from the assembly cavity, the connector is located on the side of the thermal management component away from the assembly cavity. The battery adopting this structure is convenient for assembling the connector and other components, which is beneficial to reducing the difficulty of battery assembly, and the thickness of the thermal management component will not be affected by the connection position of the connector, which is beneficial to further optimize the thickness of the thermal management component to improve the space utilization of the battery. On the other hand, the connector and the assembly cavity can be located on both sides of the thermal management component respectively, so that when leakage occurs at the connection position between the connector and the flow and the connection position between the connector and other components, the phenomenon of heat exchange medium entering the assembly cavity can be further alleviated, so as to further reduce the risk of short circuit of the battery during use, which is beneficial to improve the reliability of battery use.

[0008] In some embodiments, the first wall further includes a mounting frame; the mounting frame is provided with a mounting hole, and the mounting hole penetrates the mounting frame along the thickness direction of the thermal management component; wherein the thermal management component is disposed in the mounting hole and connected to the mounting frame.

[0009] In the above technical solution, the first wall is also provided with a mounting frame for installing the thermal management component, so as to facilitate the assembly and fastening of the thermal management component. Specifically, by arranging the thermal management component in the mounting hole of the mounting frame and connecting it to the mounting frame, on the one hand, the reliability and stability of the thermal management component assembled on the mounting frame can be further improved, and the difficulty of assembly between the thermal management component and the mounting frame can be reduced. On the other hand, the mounting frame can also play a certain protective role on the thermal management component, so as to reduce the risk of the thermal management component being worn or bumped, which is beneficial to improving the service life of the thermal management component.

[0010] In some embodiments, the box body also includes a second wall; the second wall is connected to the mounting frame, and the second wall is spaced apart from the thermal management component along the thickness direction of the second wall, and the thickness direction of the second wall is perpendicular to the thickness direction of the thermal management component.

[0011] In the above technical solution, the second wall of the box body is connected to the mounting frame of the first wall and is spaced apart from the thermal management component, so that the second wall and the thermal management component are connected and assembled with each other through the mounting frame, so that the weight of the second wall itself or the impact force exerted on the second wall will not directly act on the thermal management component, thereby reducing the load exerted on the thermal management component, thereby reducing the risk of damage to the thermal management component and reducing the difficulty of assembly between the second wall and the first wall.

[0012] In some embodiments, a limiting member is connected to a side of the mounting frame facing the assembly cavity along the thickness direction of the thermal management component; wherein the limiting member is located between the second wall and the thermal management component in the thickness direction of the second wall, and the limiting member is configured for the battery cell to abut against along the thickness direction of the second wall.

[0013] In the above technical solution, by connecting a stopper to the side of the mounting frame facing the assembly cavity, and the stopper can provide abutment for the battery cell in the thickness direction of the second wall, it can play a certain limiting role on the battery cell contained in the assembly cavity, which can alleviate the shaking or displacement of the battery cell during use, and reduce the collision between the battery cell and the second wall. In addition, by setting the stopper between the second wall and the thermal management component in the thickness direction of the second wall, the space between the second wall and the thermal management component can be utilized, which is conducive to improving the internal space utilization of the battery and can reduce the phenomenon that the stress on the stopper is transferred to the thermal management component.

[0014] In some embodiments, the battery further includes an insulating member; the insulating member is disposed between the limiting member and the battery cell along a thickness direction of the second wall.

[0015] In the above technical solution, by arranging an insulating member between the limit member and the battery cell, on the one hand, the insulation isolation effect between the limit member and the battery cell can be improved, which is beneficial to reduce the risk of short circuit between the battery cell and the limit member; on the other hand, the insulating member can play a certain buffering role between the limit member and the battery cell.

[0016] In some embodiments, along the thickness direction of the thermal management component, the battery cells and the thermal management component are arranged correspondingly, and a projection of the insulating member does not overlap with a projection of the thermal management component.

[0017] In the above technical solution, the battery cell is arranged corresponding to the battery cell in the thickness direction of the thermal management component to improve the heat exchange effect between the thermal management component and the battery cell, thereby improving the effect of the thermal management component in managing the temperature of the battery cell. In addition, by arranging the projection of the insulating member in the thickness direction of the thermal management component so as not to overlap with the projection of the thermal management component in the thickness direction of the thermal management component, the insulating member will not occupy the space of the thermal management component corresponding to the battery cell in the thickness direction of the thermal management component, which is conducive to improving the energy density of the battery.

[0018] In some embodiments, a spacing space is formed between the limiting member and the second wall along the thickness direction of the second wall.

[0019] In the above technical solution, in the thickness direction of the second wall, a spacing space is formed between the limiter and the second wall, so that the limiter and the second wall are a structure spaced apart in the thickness direction of the second wall. On the one hand, the spacing space can play a buffering role between the second wall and the limiter, so that when the second wall is subjected to external impact, the phenomenon that the second wall directly transmits the impact force to the limiter can be alleviated, thereby reducing the external impact force on the battery cell. On the other hand, other components inside the battery can be arranged in the spacing space between the limiter and the second wall, which is beneficial to improving the internal space utilization of the battery.

[0020] In some embodiments, the battery also includes a transfer tube; the transfer tube is used to transport a heat exchange medium, and the transfer tube is disposed on a mounting frame; wherein the transfer tube has a first end and a second end opposite to each other, the first end is docked with the connector, the second end is located on a side of the second wall away from the thermal management component in the thickness direction of the second wall, and the second end is used to communicate with an external component.

[0021] In the above technical solution, the battery is also provided with a transfer tube, which is arranged on the mounting frame, and the first end of the transfer tube is docked with the joint to realize the connection between the transfer tube and the flow channel inside the thermal management component through the joint, so that the transfer tube can input heat exchange medium into the flow channel or the heat exchange medium in the flow channel can flow out, and the second end of the transfer tube is arranged to be located on the side of the second wall away from the thermal management component in the thickness direction of the second wall, so that the connection position between the transfer tube and the joint and the connection position between the transfer tube and the external component can be separated from each other. On the one hand, the risk of the heat exchange medium leaking into the assembly cavity can be further reduced, and on the other hand, it is convenient for the assembly connection between the transfer tube and the external component, which is beneficial to reduce the difficulty of assembly between the transfer tube and the external component.

[0022] In some embodiments, the mounting frame is provided with a mounting channel, and the mounting channel extends to the hole wall surface of the mounting hole; wherein at least a portion of the transfer tube is passed through the mounting channel.

[0023] In the above technical solution, a mounting channel is provided on the mounting frame, the mounting channel passes through the wall surface of the mounting hole, and at least a portion of the adapter tube is passed through the mounting channel, so that the adapter tube can be docked with the connector. A battery adopting this structure can realize that part of the adapter tube is located inside the mounting frame. On the one hand, the stability and reliability of the adapter tube installed on the mounting frame can be improved. On the other hand, the mounting frame can also play a certain protective role on the adapter tube, so as to reduce the risk of the adapter tube being worn or bumped, which is beneficial to improving the service life of the adapter tube.

[0024] In some embodiments, the mounting channel extends along the thickness direction of the second wall, one end of the mounting channel extends to the hole wall surface of the mounting hole, and the other end extends to the outer surface of the mounting bracket.

[0025] In the above technical solution, by setting the installation passage as a structure extending along the thickness direction of the second wall, and the two ends of the installation passage respectively pass through the hole wall surface of the installation hole and the outer surface of the mounting frame, the assembly between the adapter tube and the mounting frame can be achieved by simply inserting the adapter tube into the installation channel along the thickness direction of the second wall, which is beneficial to reduce the difficulty of assembly between the adapter tube and the mounting frame.

[0026] In some embodiments, along the thickness direction of the thermal management component, the thermal management component has a first surface and a second surface that are relatively arranged, the first surface forms a part of the cavity wall of the assembly cavity, and the joint is connected to the second surface; wherein the projection of the joint in the thickness direction of the thermal management component is located within the mounting hole.

[0027] In the above technical solution, by arranging the joint on the side of the thermal management component away from the assembly cavity, and setting the projection of the joint in the thickness direction of the thermal management component to be located within the mounting hole, the mounting frame can avoid the joint to reduce the interference between the joint and the mounting frame, and facilitate subsequent maintenance of the joint, as well as assembly of the joint with other components, which is beneficial to reducing the difficulty of assembly between the joint and other components.

[0028] In some embodiments, the mounting frame has a third surface facing away from the assembly cavity in the thickness direction of the thermal management component, and the mounting hole extends to the third surface; wherein, in the thickness direction of the thermal management component, along the direction from the first surface to the second surface, the joint does not extend beyond the third surface.

[0029] In the above technical solution, the joint is arranged so as not to extend beyond the side of the mounting frame away from the assembly cavity in the direction from the first surface to the second surface, so that the joint is located as a whole in the mounting hole. The mounting frame can also provide a certain degree of protection for the joint, thereby reducing wear or bumps on the joint, which is beneficial to improving the service life of the joint.

[0030] In some embodiments, the mounting hole includes a first hole segment and a second hole segment arranged along the thickness direction of the thermal management component, the first hole segment is located on the side of the second hole segment close to the assembly cavity, the hole wall surface of the first hole segment and the hole wall surface of the second hole segment are connected by a step surface, and the step surface is arranged facing the assembly cavity; wherein, the thermal management component is located in the first hole segment, and the thermal management component abuts against the step surface.

[0031] In the above technical scheme, the mounting hole has a first hole segment and a second hole segment arranged along the thickness direction of the thermal management component, the hole wall surface of the first hole segment and the hole wall surface of the second hole segment are connected by a step surface, and the step surface is arranged facing the assembly cavity in the thickness direction of the thermal management component, wherein, by arranging the thermal management component in the first hole segment and abutting on the step surface, on the one hand, it is convenient to install the thermal management component in the mounting hole of the mounting frame, which is beneficial to reduce the difficulty of assembly between the thermal management component and the mounting frame, and on the other hand, the step surface can also play a certain limiting and positioning role on the thermal management component in the thickness direction of the thermal management component, which is beneficial to improve the stability and reliability of the thermal management component installed on the mounting frame.

[0032] In some embodiments, the mounting frame has a third surface facing away from the assembly cavity and a fourth surface facing the assembly cavity in the thickness direction of the thermal management component, the first hole segment extends to the fourth surface, and the second hole segment extends to the third surface; wherein, in the thickness direction of the thermal management component, along the direction from the third surface to the fourth surface, the thermal management component does not extend beyond the fourth surface.

[0033] In the above technical solution, the thermal management component is arranged to not exceed the side of the mounting frame facing the assembly cavity in the direction from the third surface to the fourth surface, that is, the thermal management component does not exceed one end of the mounting hole passing through the fourth surface in the thickness direction of the thermal management component, thereby alleviating the phenomenon that the thermal management component protrudes from the fourth surface of the mounting frame, which is beneficial to enhancing the protective effect of the mounting frame on the thermal management component.

[0034] In some embodiments, along a thickness direction of the heat management component, the heat management component has a first surface facing the assembly cavity, and the first surface is flush with the fourth surface.

[0035] In the above technical solution, by setting the first surface of the thermal management component facing the assembly cavity and the fourth surface of the mounting frame facing the assembly cavity to be flush with each other, on the one hand, it is convenient for manufacturing and processing, and on the other hand, it can reduce the unevenness of the cavity wall of the assembly cavity, which is beneficial to reducing the risk of collision between the battery cell and the sharp part of the mounting frame or the sharp part of the thermal management component.

[0036] In some embodiments, the box body also includes a support member; the support member is arranged in the mounting hole and connected to the hole wall of the mounting hole, along the thickness direction of the thermal management component, the support member is located on the side of the thermal management component away from the assembly cavity and abuts against the thermal management component, and the projections of the support member and the joint in the thickness direction of the thermal management component do not overlap.

[0037] In the above technical solution, by arranging a support member in the mounting hole, the support member is located on the side of the thermal management component away from the assembly cavity in the thickness direction of the thermal management component and abuts against the thermal management component, so that the support member can also play a certain supporting role for the thermal management component, which is conducive to reducing the risk of deformation of the thermal management component during use, and the support member can also play a certain protective role for the thermal management component, which is conducive to alleviating the phenomenon of direct collision between the thermal management component and the external environment. In addition, by setting the projections of the support member and the joint in the thickness direction of the thermal management component to be non-overlapping, the interference effect between the support member and the joint can also be reduced.

[0038] In some embodiments, the thermal management component is welded to the mounting bracket.

[0039] In the above technical solution, by welding the thermal management component to the mounting frame, it is helpful to improve the connection reliability between the thermal management component and the mounting frame, so as to improve the stability and reliability of the thermal management component assembled on the mounting frame.

[0040] In some embodiments, the header is welded to the thermal management component.

[0041] In the above technical solution, by welding the joint to the thermal management component, it is helpful to improve the connection reliability between the joint and the thermal management component, so as to improve the stability and reliability of the joint assembly on the thermal management component.

[0042] In some embodiments, the thermal management component includes a first plate and a second plate. The first plate and the second plate are stacked and connected along a thickness direction of the thermal management component. The first plate and the second plate jointly define a flow channel.

[0043] In the above technical solution, the thermal management component is provided with a first plate body and a second plate body which are stacked and connected along the thickness direction of the thermal management component, and the first plate body and the second plate body jointly define a flow channel for accommodating a heat exchange medium to form a flow channel inside the thermal management component. The thermal management component of this structure has a simple structure and is easy to process and manufacture.

[0044] In some embodiments, along the thickness direction of the thermal management component, the first plate body has a first plane facing the second plate body, and a groove is provided on one side of the second plate body facing the first plate body, and the groove wall surface and the first plane jointly define a flow channel.

[0045] In the above technical solution, by setting a groove on the side of the second plate body facing the first plate body, after the first plate body and the second plate body are stacked and connected with each other, the first plane of the first plate body and the groove wall of the groove of the second plate body can jointly form a flow channel of the thermal management component. The structure is simple, easy to implement, and has high processing efficiency.

[0046] In some embodiments, along the thickness direction of the heat management component, a protrusion is formed on a side of the second plate body away from the first plate body and at a position corresponding to the groove.

[0047] In the above technical solution, a protrusion is formed on the side of the second plate body away from the first plate body along the thickness direction of the thermal management component and corresponding to the position of the groove, so that the groove is a structure that can be formed on the second plate body by a stamping process, which helps to reduce the difficulty of forming the groove on the second plate body and helps to increase the difficulty of processing and forming the groove on the second plate body.

[0048] In some embodiments, along the thickness direction of the heat management component, the second plate body is located on a side of the first plate body away from the assembly cavity.

[0049] In the above technical solution, by setting the second plate body to be located on the side of the first plate body away from the assembly cavity, the protrusion formed by the second plate body is located outside the assembly cavity, so that the surface of the first plate body facing the assembly cavity can be set as a plane. The battery using this structure can reduce the interference between the protrusion on the second plate body and the battery cell accommodated in the assembly cavity, which is beneficial to reduce the difficulty of assembling the battery cell in the assembly cavity.

[0050] In some embodiments, the box body includes a first box body and a second box body, the first box body and the second box body overlap each other along the thickness direction of the thermal management component and jointly define an assembly cavity, and the first box body includes a first wall.

[0051] In the above technical solution, by setting the box body as a first box body and a second box body, and the first box body and the second box body are overlapping each other along the thickness direction of the thermal management component and jointly define an assembly cavity, the box body using this structure can reduce the difficulty of assembling the battery cell into the assembly cavity of the box body, and can reduce the difficulty of manufacturing the box body.

[0052] In some embodiments, the first box body also includes two second walls, both of which are connected to the first wall, and the second box body includes a third wall and two fourth walls, both of which are connected to the third wall; wherein the first wall and the third wall are arranged opposite to each other in a first direction, the two second walls are arranged opposite to each other in a second direction, and the two fourth walls are arranged opposite to each other in a third direction, the first direction is parallel to the thickness direction of the thermal management component, and the first direction, the second direction and the third direction are perpendicular to each other.

[0053] In the above technical scheme, the first box body includes a first wall and two second walls connected to the first wall, and the two second walls are arranged opposite to each other along the second direction, and the second box body includes a third wall and two fourth walls connected to the third wall, and the two fourth walls are arranged opposite to each other along the third direction, so that the first box body and the second box body both form a "U"-like structure, so that on the one hand, it is convenient for the first box body and the second box body to overlap each other along the thickness direction of the thermal management component to jointly define an assembly cavity for accommodating battery cells, and on the other hand, it can reduce the manufacturing difficulty of the first box body and the second box body, and facilitate the subsequent maintenance of the battery cells accommodated in the box body, which is beneficial to reduce the difficulty of later maintenance of the battery.

[0054] In some embodiments, along the third direction, the first wall is located between the two fourth walls, and two sides of the first wall are respectively connected to the two fourth walls.

[0055] In the above technical solution, by setting the first wall as a structure located between the two fourth walls in the third direction, and the first wall is respectively connected to the fourth walls on both sides of the third direction, so that the two fourth walls are a structure that clamps the first wall in the third direction, on the one hand, the assembly stability between the first box body and the second box body of the box body can be improved, and it is convenient to assemble and connect the first wall and the fourth wall from the third direction, which is beneficial to reducing the assembly difficulty between the first wall and the fourth wall. On the other hand, the closed interface between the first wall and the fourth wall can be realized as a structure perpendicular to the third direction, which is beneficial to improving the sealing effect between the first wall and the fourth wall.

[0056] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, wherein the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0058] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0059] Figure 2 An exploded view of the structure of a battery provided in some embodiments of the present application;

[0060] Figure 3 A schematic structural diagram of a first box body of a box provided in some embodiments of the present application;

[0061] Figure 4 An exploded view of the structure of a first box body of a box provided in some embodiments of the present application;

[0062] Figure 5 A partial cross-sectional view of a battery provided for some embodiments of the present application;

[0063] Figure 6 for Figure 5 A partial enlarged view of the battery at A shown;

[0064] Figure 7 for Figure 5 A partial enlarged view of the battery at B shown;

[0065] Figure 8 A schematic diagram of the structure of a thermal management component provided in some embodiments of the present application;

[0066] Fig. 9 An exploded view of the structure of a thermal management component provided in some embodiments of the present application;

[0067] Fig.10 A front view of a thermal management component provided in some embodiments of the present application facing the second plate in a first direction;

[0068] Fig.11 A schematic structural diagram of the second box body of the box provided in some embodiments of the present application.

[0069] Icons: 1000-vehicle; 100-battery; 10-box; 11-assembly cavity; 12-first box body; 121-first wall; 1211-thermal management component; 1211a-flow channel; 1211b-joint; 1211c-first surface; 1211d-second surface; 1211e-first plate; 1211f-second plate; 1211g-first plane; 1211h-groove; 1211k-protrusion; 1212-mounting frame; 1212a-mounting hole; 1212b-mounting channel; 1212c-third surface; 1212 d-fourth surface; 1212e-first hole section; 1212f-second hole section; 1212g-step surface; 122-second wall; 123-support member; 13-second box body; 131-third wall; 132-fourth wall; 14-partition space; 20-battery cell; 30-transfer tube; 31-first end; 32-second end; 40-limiting member; 41-first limiting part; 42-second limiting part; 50-insulating member; 200-controller; 300-motor; X-thickness direction of thermal management component; Y-thickness direction of second wall; Z-third direction. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0071] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0072] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0073] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0075] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0076] The term "plurality" used in the present application refers to two or more (including two).

[0077] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0078] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0079] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0080] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0081] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0082] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0083] In some embodiments, the separator is a separator membrane. There may be many types of separator membranes, and any known porous separator membrane with good chemical stability and mechanical stability may be selected.

[0084] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The electrolyte can be liquid, gel or solid. Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0085] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0086] In some embodiments, the electrode assembly is a laminate structure.

[0087] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets may be provided respectively, and the plurality of positive electrode sheets and the plurality of negative electrode sheets may be alternately stacked.

[0088] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0089] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded sections that are stacked.

[0090] As an example, a plurality of separators may be provided, each of which is provided between any adjacent positive electrode sheets or negative electrode sheets.

[0091] As an example, the separator may be disposed continuously, and disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0092] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0093] In some embodiments, the electrode assembly is provided with tabs, which can lead current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0094] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film.

[0095] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes but is not limited to a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc.

[0096] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0097] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0098] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0099] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0100] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0101] Batteries have outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide adaptability, and low self-discharge coefficient. They are an important part of the development of new energy today. The development of battery technology must consider many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, the safety of the battery also needs to be considered.

[0102] In battery technology, a battery generally includes a housing and a plurality of battery cells disposed in the housing. The plurality of battery cells are electrically connected through a busbar, so that the plurality of battery cells are connected in series or in parallel to form a whole and are contained in the housing, thereby increasing the capacity and power of the battery. However, the battery cells in the battery will generate a large amount of heat during the continuous charging and discharging process. In the related art, in order to reduce the potential safety hazards caused by the internal temperature rise of the battery during use, a thermal management component for heat exchange with the battery cells is generally provided in the housing to adjust the temperature of the battery cells, thereby alleviating the temperature rise inside the battery. However, the connection position of the joint of the thermal management component of the battery in the related art and the pipe for conveying the heat exchange medium is very likely to cause leakage of the heat exchange medium during use, and the leaked heat exchange medium will contact with the plurality of battery cells or other components in the housing, thereby easily causing the risk of short circuit between the plurality of battery cells, resulting in low reliability of the battery.

[0103] Based on the above considerations, in order to solve the problem of low reliability of battery use, an embodiment of the present application provides a battery, which includes a box and a battery cell. An assembly cavity is formed inside the box. The battery cell is accommodated in the assembly cavity. The box has a first wall, and the first wall includes a thermal management component for managing the temperature of the battery cell. A flow channel is formed inside the thermal management component, and the flow channel is used to accommodate a heat exchange medium. The thermal management component is provided with a joint, which is connected to the flow channel, and the joint is located outside the assembly cavity.

[0104] In a battery of this structure, the first wall of the box body includes a heat management component, and a flow channel for accommodating a heat exchange medium is formed inside the heat management component, so that the heat management component is a structure integrated on the box body, so that the heat management component is a part of the first wall of the box body, so that heat exchange with the battery monomer accommodated in the assembly cavity can be achieved through the heat management component, so that the box body can be simplified and lightened while managing the temperature of the battery monomer, and thus the weight of the battery can be reduced while reducing the risk of temperature rise during use of the battery. Among them, by arranging the joint connected to the flow channel to be located outside the assembly cavity of the box body, so that the connection position of the joint and the flow and the connection position of the joint and other components are both located outside the assembly cavity, the battery adopting this structure is convenient for the joint to be docked and assembled with other components on the one hand, so as to reduce the difficulty of battery assembly, and can reduce the difficulty of subsequent maintenance of the joint, so as to reduce the later maintenance cost of the battery, and on the other hand, it can expand the available space inside the box body, which is conducive to improving the internal space utilization rate of the box body, and when leakage occurs at the connection position of the joint and the flow and the connection position of the joint and other components, it can alleviate the phenomenon of heat exchange medium entering the assembly cavity, so as to reduce the short circuit risk of the battery during use, which is conducive to improving the reliability of the battery.

[0105] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery disclosed in the present application can be used to form the electrical device, which is helpful to alleviate the problem of short circuit of the battery during use, so as to improve the reliability of the battery.

[0106] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0107] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

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

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

[0110] According to some embodiments of the present application, referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 2 The structure explosion diagram of the battery 100 provided in some embodiments of the present application is shown in FIG. Figure 3 This is a schematic diagram of the structure of the first box body 12 of the box 10 provided in some embodiments of the present application. Figure 4 This is a structural exploded view of the first box body 12 of the box 10 provided in some embodiments of the present application. Figure 5 A partial cross-sectional view of a battery 100 provided in some embodiments of the present application, Figure 6 for Figure 5 A partial enlarged view of the battery 100 at A shown. The present application provides a battery 100, which includes a case 10 and a battery cell 20. An assembly cavity 11 is formed inside the case 10. The battery cell 20 is accommodated in the assembly cavity 11. The case 10 has a first wall 121, and the first wall 121 includes a thermal management component 1211 for managing the temperature of the battery cell 20. A flow channel 1211a is formed inside the thermal management component 1211, and the flow channel 1211a is used to accommodate a heat exchange medium. The thermal management component 1211 is provided with a joint 1211b, and the joint 1211b is connected to the flow channel 1211a, and the joint 1211b is located outside the assembly cavity 11.

[0111] The box 10 is used to provide an assembly cavity 11 for the battery cell 20, and the box 10 can adopt a variety of structures. Figure 2 As shown, the box body 10 may include a first box body 12 and a second box body 13 . The first box body 12 and the second box body 13 cover each other, and the first box body 12 and the second box body 13 jointly define an assembly cavity 11 for accommodating the battery cell 20 .

[0112] Optionally, the structures of the first box body 12 and the second box body 13 can be various. For example, Figure 2 In the embodiment, the first box body 12 and the second box body 13 are both "U"-shaped structures, so that the first box body 12 and the second box body 13 cover each other to jointly define the assembly cavity 11. Of course, in other embodiments, the first box body 12 can also be a hollow structure with one end open, and the second box body 13 can be a plate-like structure. The second box body 13 covers the open side of the first box body 12, so that the first box body 12 and the second box body 13 jointly define the assembly cavity 11; the first box body 12 and the second box body 13 can also be hollow structures with one side open, and the open side of the first box body 12 covers the open side of the second box body 13.

[0113] Of course, the box body 10 formed by the first box body 12 and the second box body 13 can be in various shapes, such as a cylinder, a cuboid or a cube. Figure 2 In the embodiment, the box body 10 formed by the first box body 12 and the second box body 13 is in the shape of a rectangular parallelepiped.

[0114] In the battery 100, the battery cell 20 disposed in the box 10 may be one or more. When there are more than one battery cell 20 disposed in the box 10, the multiple battery cells 20 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 may be accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in mixed connection, and then the multiple battery modules may be connected in series, in parallel, or in mixed connection to form a whole, and then the whole may be accommodated in the box 10.

[0115] In some embodiments, the battery 100 may further include other structures. For example, the battery 100 may further include a busbar component, which is used to connect the plurality of battery cells 20 to achieve electrical connection between the plurality of battery cells 20 .

[0116] Each battery cell 20 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. Optionally, the battery cell 20 may be in a variety of shapes, for example, the battery cell 20 may be in a rectangular parallelepiped, a cylinder, a prism or other shapes. Figure 2 In the figure, the battery cell 20 is a rectangular parallelepiped structure.

[0117] The case 10 has a first wall 121, and the first wall 121 includes a thermal management component 1211 for managing the temperature of the battery cell 20, that is, the thermal management component 1211 is a part of the first wall 121 of the case 10, and the thermal management component 1211 is used to exchange heat with the battery cell 20 to manage the temperature of the battery cell 20. In other words, the thermal management component 1211 is integrated on the case 10 so that the thermal management component 1211 is a part of the case 10, so that the thermal management component 1211 and other parts of the case 10 jointly define an assembly cavity 11 for accommodating the battery cell 20, and the surface of the thermal management component 1211 facing the assembly cavity 11 is a part of the cavity wall surface of the assembly cavity 11.

[0118] A flow channel 1211a is formed inside the thermal management component 1211, and the flow channel 1211a is used to accommodate a heat exchange medium. That is, a flow channel 1211a is formed inside the thermal management component 1211 for the heat exchange medium to flow, so that the thermal management component 1211 can exchange heat with the battery cell 20 accommodated in the assembly cavity 11, thereby managing the temperature of the battery cell 20.

[0119] Optionally, the heat exchange medium may be a variety of substances. For example, the heat exchange medium may be a gas, such as air or hydrogen, or a liquid, such as water, a salt water solution or liquid nitrogen.

[0120] Optionally, along the thickness direction X of the heat management component, the thickness of the region of the heat management component 1211 where the flow channel 1211 a is not formed is greater than or equal to 1 mm and less than or equal to 3 mm.

[0121] For example, see Figure 2 and Figure 3 As shown, the first wall 121 is the bottom wall of the box body 10, and the first wall 121 is configured to support the battery cell 20 in the thickness direction X of the thermal management component, that is, the thickness direction X of the thermal management component is the gravity direction or the approximate gravity direction, and the first wall 121 is located below the battery cell 20. Of course, in other embodiments, the first wall 121 may also be the side wall or top wall of the box body 10.

[0122] The joint 1211b is connected to the flow channel 1211a, and the joint 1211b is located outside the assembly cavity 11, that is, the joint 1211b is arranged on the surface of the heat management component 1211 located outside the assembly cavity 11, and the joint 1211b is connected to the flow channel 1211a inside the heat management component 1211, so that after the joint 1211b is connected with other components, the heat exchange medium can flow into the flow channel 1211a of the heat management component 1211 or flow out of the flow channel 1211a of the heat management component 1211 through the joint 1211b. Figure 3 and Figure 4 In the embodiment, the battery 100 further includes a transfer tube 30, one end of which is connected to the connector 1211b, and the other end of which is connected to a delivery tube for delivering a heat exchange medium.

[0123] Optionally, the joint 1211b may be connected to the thermal management component 1211 through various structures. For example, the joint 1211b may be connected to the thermal management component 1211 through welding, bonding or clamping.

[0124] In the embodiment of the present application, two connectors 1211b are provided on the thermal management component 1211, and the two connectors 1211b are respectively connected to the two ends of the flow channel 1211a. Correspondingly, the battery 100 includes two transfer tubes 30, each transfer tube 30 is connected to a connector 1211b, one transfer tube 30 is used to input heat exchange medium into the flow channel 1211a, and the other transfer tube 30 is used to allow the heat exchange medium in the flow channel 1211a to flow out, so that the heat exchange medium forms a circulation in the flow channel 1211a of the thermal management component 1211.

[0125] In the present embodiment, the first wall 121 of the housing 10 includes a thermal management component 1211, and a flow channel 1211a for accommodating a heat exchange medium is formed inside the thermal management component 1211, so that the thermal management component 1211 is a structure integrated on the housing 10, so that the thermal management component 1211 is a part of the first wall 121 of the housing 10, so that heat exchange with the battery cell 20 accommodated in the assembly cavity 11 can be achieved through the thermal management component 1211, so that while managing the temperature of the battery cell 20, the housing 10 can be simplified and lightened, thereby reducing the risk of temperature rise of the battery 100 during use and reducing the weight of the battery 100, wherein the connector 1211b connected to the flow channel 1211a is set to be located outside the assembly cavity 11 of the housing 10, so that the connector 1211b can be connected to the flow channel 1211a. The connection position between the head 1211b and the circulation and the connection position between the connector 1211b and other components are both located outside the assembly cavity 11. The battery 100 adopting this structure is convenient for docking and assembling the connector 1211b with other components, so as to reduce the difficulty of assembling the battery 100, and can reduce the difficulty of subsequent maintenance of the connector 1211b, so as to reduce the later maintenance cost of the battery 100. On the other hand, it can expand the available space inside the box body 10, which is beneficial to improving the internal space utilization rate of the box body 10, and when leakage occurs at the connection position between the connector 1211b and the circulation and the connection position between the connector 1211b and other components, it can alleviate the phenomenon of heat exchange medium entering the assembly cavity 11, so as to reduce the risk of short circuit of the battery 100 during use, which is beneficial to improving the reliability of the battery 100.

[0126] According to some embodiments of the present application, see Figure 4 and Figure 6 As shown, along the thickness direction X of the thermal management component, the thermal management component 1211 has a first surface 1211c and a second surface 1211d that are oppositely disposed, the first surface 1211c forms a part of the cavity wall of the assembly cavity 11, and the joint 1211b is connected to the second surface 1211d.

[0127] Among them, the first surface 1211c and the second surface 1211d are respectively the surfaces located on both sides of the thermal management component 1211 in the thickness direction X of the thermal management component, and the first surface 1211c forms a part of the cavity wall surface of the assembly cavity 11. That is, the surface of the thermal management component 1211 facing the assembly cavity 11 is the first surface 1211c, so that the first surface 1211c constitutes a part of the cavity wall surface of the assembly cavity 11, and correspondingly, the second surface 1211d is the surface of the thermal management component 1211 on the side away from the assembly cavity 11 in the thickness direction X of the thermal management component.

[0128] The joint 1211b is connected to the second surface 1211d, that is, the joint 1211b is arranged on the side of the thermal management component 1211 away from the assembly cavity 11 in the thickness direction X of the thermal management component. Of course, in other embodiments, if the thickness of the thermal management component 1211 satisfies the condition, the joint 1211b can also be connected to the outer peripheral surface of the thermal management component 1211 surrounding the outer side of the first surface 1211c.

[0129] In this embodiment, by connecting the connector 1211b to the second surface 1211d of the thermal management component 1211 facing away from the assembly cavity 11, the connector 1211b is located on the side of the thermal management component 1211 facing away from the assembly cavity 11. The battery 100 adopting this structure is convenient for assembling the connector 1211b with other components, which is beneficial to reducing the difficulty of assembling the battery 100, and the thickness of the thermal management component 1211 will not be affected by the connection position of the connector 1211b, which is beneficial to further optimize the thickness of the thermal management component 1211 to improve the space utilization of the battery 100. On the other hand, the connector 1211b and the assembly cavity 11 can be respectively located on both sides of the thermal management component 1211, so that when leakage occurs at the connection position between the connector 1211b and the flow and the connection position between the connector 1211b and other components, the phenomenon of heat exchange medium entering the assembly cavity 11 can be further alleviated, so as to further reduce the risk of short circuit of the battery 100 during use, which is beneficial to improve the reliability of the battery 100.

[0130] According to some embodiments of the present application, referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , and please refer to Figure 7 , Figure 7 for Figure 5 The first wall 121 may further include a mounting frame 1212, the mounting frame 1212 is provided with a mounting hole 1212a, and the mounting hole 1212a penetrates the mounting frame 1212 along the thickness direction X of the thermal management component. The thermal management component 1211 is disposed in the mounting hole 1212a and connected to the mounting frame 1212.

[0131] Among them, the mounting frame 1212 plays the role of providing installation and support for the thermal management component 1211. The mounting frame 1212 is provided with a mounting hole 1212a, and the mounting hole 1212a passes through the mounting frame 1212 along the thickness direction X of the thermal management component. That is, the mounting hole 1212a extends along the thickness direction X of the thermal management component, and the two ends of the mounting hole 1212a respectively pass through the surfaces on both sides of the mounting frame 1212.

[0132] The thermal management component 1211 is disposed in the mounting hole 1212a and connected to the mounting frame 1212. That is, the mounting frame 1212 is a structure surrounding the outer side of the thermal management component 1211, and the mounting frame 1212 and the thermal management component 1211 are connected to each other, so that the thermal management component 1211 can block the mounting hole 1212a, so that the thermal management component 1211 and the mounting frame 1212 together form the first wall 121 of the box body 10.

[0133] Optionally, there may be various connection structures between the thermal management component 1211 and the mounting bracket 1212. For example, the thermal management component 1211 may be connected to the mounting bracket 1212 by welding, bonding, clamping or bolting.

[0134] In this embodiment, the first wall 121 is also provided with a mounting frame 1212 for mounting the thermal management component 1211, so as to facilitate the assembly and fastening of the thermal management component 1211, wherein, by setting the thermal management component 1211 in the mounting hole 1212a of the mounting frame 1212 and connecting it to the mounting frame 1212, on the one hand, the reliability and stability of the thermal management component 1211 assembled on the mounting frame 1212 can be further improved, and the difficulty of assembly between the thermal management component 1211 and the mounting frame 1212 can be reduced, and on the other hand, the mounting frame 1212 can also play a certain protective role on the thermal management component 1211, so as to reduce the risk of the thermal management component 1211 being worn or bumped, which is beneficial to improving the service life of the thermal management component 1211.

[0135] According to some embodiments of the present application, see Figure 3 , Figure 5 and Figure 6 As shown, the box body 10 may also include a second wall 122, which is connected to the mounting frame 1212. The second wall 122 is spaced apart from the thermal management component 1211 along the thickness direction Y of the second wall, and the thickness direction Y of the second wall is perpendicular to the thickness direction X of the thermal management component.

[0136] The second wall 122 and the thermal management component 1211 are both structures connected to the mounting frame 1212 , so that the mounting frame 1212 can provide installation and support for both the thermal management component 1211 and the second wall 122 .

[0137] Exemplarily, the second wall 122 is connected to one side of the mounting frame 1212 in the thickness direction X of the thermal management component. Figure 3 and Figure 5In the figure, the first box body 12 includes two second walls 122, and the two second walls 122 are both connected to one side of the mounting frame 1212 in the thickness direction X of the thermal management component. The two second walls 122 are relatively arranged along the thickness direction Y of the second wall, and are respectively located on both sides of the thermal management component 1211. The surfaces of the two second walls 122 facing each other form a part of the cavity wall surface of the assembly cavity 11.

[0138] Optionally, there may be various connection structures between the second wall 122 and the mounting frame 1212. For example, the second wall 122 may be connected to the mounting frame 1212 by welding, bonding, clamping or bolting.

[0139] Along the thickness direction Y of the second wall, the second wall 122 and the heat management component 1211 are spaced apart, that is, there is a distance between the second wall 122 and the heat management component 1211 in the thickness direction Y of the second wall, and the two are not in contact. Correspondingly, in an embodiment in which the first box body 12 includes two second walls 122, the heat management component 1211 is located between the two second walls 122 in the thickness direction Y of the second wall, and the heat management component 1211 and the two second walls 122 are spaced apart.

[0140] It should be noted that in the embodiment where the box body 10 includes the first box body 12 and the second box body 13 , the second wall 122 is a part of the first box body 12 , that is, the first box body 12 includes the first wall 121 and the second wall 122 .

[0141] In this embodiment, the second wall 122 of the box body 10 is connected to the mounting frame 1212 of the first wall 121 and is spaced apart from the thermal management component 1211, so that the second wall 122 and the thermal management component 1211 are connected and assembled to each other through the mounting frame 1212, so that the weight of the second wall 122 itself or the impact force exerted on the second wall 122 will not directly act on the thermal management component 1211, thereby reducing the load exerted on the thermal management component 1211, thereby reducing the risk of damage to the thermal management component 1211 and reducing the difficulty of assembly between the second wall 122 and the first wall 121.

[0142] According to some embodiments of the present application, see Figure 5 , Figure 6 and Figure 7 As shown, along the thickness direction X of the thermal management component, the side of the mounting frame 1212 facing the assembly cavity 11 is connected to the limiting member 40. The limiting member 40 is located between the second wall 122 and the thermal management component 1211 in the thickness direction Y of the second wall, and the limiting member 40 is configured for the battery cell 20 to abut against along the thickness direction Y of the second wall.

[0143] The limiting member 40 is connected to the side of the mounting frame 1212 facing the assembly cavity 11 , that is, the limiting member 40 is connected to the fourth surface 1212 d of the mounting frame 1212 facing the assembly cavity 11 .

[0144] The limit member 40 is located between the second wall 122 and the thermal management component 1211 in the thickness direction Y of the second wall. Exemplarily, the limit member 40 and the thermal management component 1211 are arranged at intervals in the thickness direction Y of the second wall, and the limit member 40 and the thermal management component 1211 do not contact each other, and the limit member 40 and the second wall 122 are arranged at intervals in the thickness direction Y of the second wall, and the limit member 40 and the second wall 122 do not contact each other.

[0145] The stopper 40 is configured to allow the battery cell 20 to abut against the battery cell 20 along the thickness direction Y of the second wall, that is, the stopper 40 is located on one side of the battery cell 20 in the thickness direction Y of the second wall, and abuts against the battery cell 20. It should be noted that in an embodiment in which the battery 100 includes a plurality of battery cells 20 stacked along the thickness direction Y of the second wall, the stopper 40 is located on at least one side of the plurality of battery cells 20 in the thickness direction Y of the second wall, and the stopper 40 is configured to allow the plurality of battery cells 20 to abut against the battery cell 20 along the thickness direction Y of the second wall.

[0146] Optionally, the number of limit members 40 connected to the side of the mounting frame 1212 facing the assembly cavity 11 can be one or more. For example, in an embodiment of the present application, two limit members 40 are connected to the side of the mounting frame 1212 facing the assembly cavity 11, and limit members 40 are provided between the thermal management component 1211 and the two second walls 122 in the thickness direction Y of the second wall, that is, the two limit members 40 are arranged at intervals along the thickness direction Y of the second wall, and the two limit members 40 are respectively located on both sides of the thermal management component 1211 in the thickness direction Y of the second wall, and multiple battery cells 20 are provided between the two limit members 40 along the thickness direction Y of the second wall.

[0147] In some embodiments, see Figure 6 and Figure 7 As shown, the limiting member 40 may include a first limiting portion 41 and a second limiting portion 42, the first limiting portion 41 and the second limiting portion 42 are stacked and interconnected along the thickness direction X of the thermal management component, and the second limiting portion 42 is connected to the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11.

[0148] The connection structure between the first limiting portion 41 and the second limiting portion 42 can be various, such as bolt connection, welding connection or clamping connection. Similarly, the connection structure between the second limiting portion 42 and the mounting bracket 1212 can also be various. For example, Figure 7In the embodiment, the second limit portion 42 and the mounting frame 1212 are an integrally formed structure, that is, the second limit portion 42 and the mounting frame 1212 are structures made by an integral forming process, such as stamping or casting, etc. Of course, in other embodiments, the second limit portion 42 and the mounting frame 1212 can also be a structure that is separately set, and correspondingly, the second limit portion 42 can be connected to the mounting frame 1212 by bolting, welding or clamping. It should be noted that in the embodiment where the battery 100 includes a battery module, the battery module includes a plurality of battery cells 20, and correspondingly, the first limit portion 41 can be an end plate of the battery module.

[0149] Optionally, a projection of the battery cell 20 in the thickness direction Y of the second wall is located within the limiting member 40 .

[0150] Exemplarily, the first limiting portion 41 is a plate-like structure extending along the third direction Z, and the second limiting portion 42 is a strip-like structure extending along the third direction Z, and the third direction Z is perpendicular to the thickness direction X of the thermal management component and the thickness direction Y of the second wall.

[0151] It should be noted that the structure of the limit member 40 is not limited to this. In other embodiments, the limit member 40 can also be other structures. For example, the limit member 40 can be a plate-like structure as a whole, that is, the first limit portion 41 and the second limit portion 42 of the limit member 40 are an integrated structure. In this embodiment, the limit member 40 and the mounting frame 1212 can be an integrally formed structure or a separately arranged structure.

[0152] In this embodiment, by connecting the stopper 40 to the side of the mounting frame 1212 facing the assembly cavity 11, and the stopper 40 can be used for the battery cell 20 to abut against in the thickness direction Y of the second wall, so that the battery cell 20 accommodated in the assembly cavity 11 can be limited to a certain extent, on the one hand, it can alleviate the phenomenon of shaking or displacement of the battery cell 20 during use, and on the other hand, it can reduce the collision between the battery cell 20 and the second wall 122. In addition, by setting the stopper 40 between the second wall 122 and the thermal management component 1211 in the thickness direction Y of the second wall, the space between the second wall 122 and the thermal management component 1211 can be used, which is conducive to improving the internal space utilization rate of the battery 100 and can reduce the phenomenon that the stress of the stopper 40 is transferred to the thermal management component 1211.

[0153] According to some embodiments of the present application, see Figure 6 and Figure 7 As shown, the battery 100 may further include an insulating member 50 , which is disposed between the limiting member 40 and the battery cell 20 along the thickness direction Y of the second wall.

[0154] The insulating member 50 serves as an insulating member between the battery cell 20 and the limiting member 40 . The insulating member 50 may be made of various materials, for example, the insulating member 50 may be made of rubber, silicone or plastic.

[0155] Exemplarily, the insulating member 50 is an insulating gasket disposed between the battery cell 20 and the limiting member 40. It should be noted that in an embodiment in which the limiting members 40 are disposed on both sides of the plurality of battery cells 20 in the thickness direction Y of the second wall, the battery 100 may include two insulating members 50, and one insulating member 50 is disposed between each limiting member 40 and the plurality of battery cells 20.

[0156] In this embodiment, by setting an insulating member 50 between the limit member 40 and the battery cell 20, on the one hand, the insulation isolation effect between the limit member 40 and the battery cell 20 can be improved, which is beneficial to reduce the risk of short circuit between the battery cell 20 and the limit member 40; on the other hand, the insulating member 50 can play a certain buffering role between the limit member 40 and the battery cell 20.

[0157] In some embodiments, see Figure 6 and Figure 7 As shown, along the thickness direction X of the thermal management component, the battery cell 20 is arranged corresponding to the thermal management component 1211 , and the projection of the insulating member 50 does not overlap with the projection of the thermal management component 1211 .

[0158] Among them, along the thickness direction X of the thermal management component, the battery cell 20 is arranged corresponding to the thermal management component 1211, that is, the battery cell 20 is assembled in the box body 10 in the area where the thermal management component 1211 is located, that is, at least part of the projection of the battery cell 20 in the thickness direction X of the thermal management component is located in the thermal management component 1211. If in an embodiment where the thermal management component 1211 is located at the bottom of the battery cell 20, the battery cell 20 is a structure placed on the thermal management component 1211.

[0159] Along the thickness direction X of the heat management component, the projection of the insulating member 50 does not overlap with the projection of the heat management component 1211 , that is, the insulating member 50 and the heat management component 1211 are spaced apart in the thickness direction Y of the second wall.

[0160] In this embodiment, the battery cell 20 is arranged corresponding to the battery cell 20 in the thickness direction X of the thermal management component to improve the heat exchange effect between the thermal management component 1211 and the battery cell 20, thereby improving the effect of the thermal management component 1211 in managing the temperature of the battery cell 20. In addition, by setting the projection of the insulating member 50 in the thickness direction X of the thermal management component to not overlap with the projection of the thermal management component 1211 in the thickness direction X of the thermal management component, the insulating member 50 does not occupy the space of the thermal management component 1211 corresponding to the battery cell 20 in the thickness direction X of the thermal management component, which is conducive to improving the energy density of the battery 100.

[0161] In some embodiments, see Figure 6 and Figure 7 As shown, a spacing space 14 is formed between the stopper 40 and the second wall 122 along the thickness direction Y of the second wall. In other words, the stopper 40 and the second wall 122 are spaced apart in the thickness direction Y of the second wall, so that the space between the stopper 40 and the second wall 122 is the spacing space 14.

[0162] Exemplarily, the spacing space 14 formed between the stopper 40 and the second wall 122 may be used to accommodate other components of the battery 100 , such as a wiring harness and a battery management system.

[0163] In the present embodiment, in the thickness direction Y of the second wall, a spacing space 14 is formed between the limit member 40 and the second wall 122, so that the limit member 40 and the second wall 122 are a structure spaced apart in the thickness direction Y of the second wall. On the one hand, the spacing space 14 can play a buffering role between the second wall 122 and the limit member 40, so that when the second wall 122 is subjected to an external impact, the phenomenon that the second wall 122 directly transmits the impact force to the limit member 40 can be alleviated, thereby reducing the external impact force on the battery cell 20. On the other hand, other components inside the battery 100 can be arranged in the spacing space 14 between the limit member 40 and the second wall 122, which is beneficial to improving the internal space utilization rate of the battery 100.

[0164] According to some embodiments of the present application, see Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the battery 100 may further include a transfer tube 30, which is used to transport the heat exchange medium and is disposed on the mounting frame 1212. The transfer tube 30 has a first end 31 and a second end 32 opposite to each other, the first end 31 is butted with the joint 1211b, the second end 32 is located on a side of the second wall 122 away from the heat management component 1211 in the thickness direction Y of the second wall, and the second end 32 is used to communicate with an external component.

[0165] The external component is a delivery pipe for providing or recovering heat exchange medium, and the second end 32 of the transfer tube 30 is connected to the delivery pipe, so that the transfer tube 30 can supply heat exchange medium into the flow channel 1211a or supply heat exchange medium in the flow channel 1211a to flow out.

[0166] In an embodiment in which two connectors 1211b are provided on the thermal management component 1211 and the two connectors 1211b are respectively connected to the two ends of the flow channel 1211a, the battery 100 includes two transfer tubes 30, the two transfer tubes 30 are respectively connected to the two connectors 1211b, and the two transfer tubes 30 are respectively connected to the two delivery tubes.

[0167] The adapter tube 30 has a first end 31 and a second end 32 opposite to each other, and the first end 31 is connected to the connector 1211b. That is, the openings at both ends of the adapter tube 30 in its extension direction are the first end 31 and the second end 32 respectively, and the first end 31 is connected to the connector 1211b.

[0168] The second end 32 is located on the side of the second wall 122 away from the thermal management component 1211 in the thickness direction Y of the second wall, that is, the transfer tube 30 extends from one end away from the joint 1211b in its extension direction to the side of the second wall 122 away from the thermal management component 1211 in the thickness direction Y of the second wall.

[0169] In this embodiment, the battery 100 is further provided with a transfer tube 30, which is arranged on the mounting frame 1212. By docking the first end 31 of the transfer tube 30 with the joint 1211b, the transfer tube 30 is connected to the flow channel 1211a inside the thermal management component 1211 through the joint 1211b, so that the transfer tube 30 can input heat exchange medium into the flow channel 1211a or the heat exchange medium in the flow channel 1211a can flow out. By setting the second end 32 of the transfer tube 30 to be located on the side of the second wall 122 away from the thermal management component 1211 in the thickness direction Y of the second wall, the connection position between the transfer tube 30 and the joint 1211b and the connection position between the transfer tube 30 and the external component are separated from each other. On the one hand, the risk of heat exchange medium leaking into the assembly cavity 11 can be further reduced. On the other hand, it is convenient to assemble and connect the transfer tube 30 with the external component, which is beneficial to reduce the difficulty of assembly between the transfer tube 30 and the external component.

[0170] According to some embodiments of the present application, see Figure 4 , Figure 5 and Figure 6 As shown, the mounting frame 1212 is provided with a mounting channel 1212b, the mounting channel 1212b extends to the hole wall surface of the mounting hole 1212a, and at least a portion of the transfer tube 30 is penetrated in the mounting channel 1212b.

[0171] The mounting channel 1212b serves to insert the adapter tube 30 so as to assemble and fix the adapter tube 30. In the embodiment where the battery 100 includes two adapter tubes 30, two mounting channels 1212b are provided on the mounting frame 1212, and each mounting channel 1212b is provided for inserting one adapter tube 30. In some embodiments, see Figure 4 As shown, the two mounting channels 1212b are arranged at intervals along the third direction Z, and both mounting channels 1212b extend along the thickness direction Y of the second wall. Exemplarily, the thickness direction X of the thermal management component, the thickness direction Y of the second wall and the third direction Z are perpendicular to each other.

[0172] The mounting channel 1212b extends to the hole wall surface of the mounting hole 1212a, that is, one end of the mounting channel 1212b passes through the hole wall surface of the mounting hole 1212a, so that the mounting channel 1212b is connected with the mounting hole 1212a, so that the first end 31 of the adapter tube 30 can extend into the mounting hole 1212a and connect the first end 31 with the connector 1211b.

[0173] In this embodiment, a mounting channel 1212b is provided on the mounting frame 1212, and the mounting channel 1212b passes through the wall surface of the mounting hole 1212a, and at least a portion of the adapter tube 30 is inserted into the mounting channel 1212b, so that the adapter tube 30 can be docked with the connector 1211b. The battery 100 adopting this structure can realize that part of the adapter tube 30 is located inside the mounting frame 1212. On the one hand, the stability and reliability of the adapter tube 30 installed on the mounting frame 1212 can be improved. On the other hand, the mounting frame 1212 can also provide a certain protection for the adapter tube 30, so as to reduce the risk of the adapter tube 30 being worn or bumped, which is beneficial to improving the service life of the adapter tube 30.

[0174] In some embodiments, see Figure 4 and Figure 6 As shown, the mounting channel 1212b extends along the thickness direction Y of the second wall, one end of the mounting channel 1212b extends to the hole wall surface of the mounting hole 1212a, and the other end extends to the outer surface of the mounting frame 1212. In other words, the two ends of the mounting channel 1212b in the thickness direction Y of the second wall respectively penetrate the hole wall surface of the mounting hole 1212a and the outer surface of the mounting frame 1212.

[0175] In this embodiment, by setting the installation passage as a structure extending along the thickness direction Y of the second wall, and the two ends of the installation channel 1212b respectively pass through the hole wall surface of the installation hole 1212a and the outer surface of the mounting frame 1212, the assembly between the transfer tube 30 and the mounting frame 1212 can be achieved by simply inserting the transfer tube 30 into the installation channel 1212b along the thickness direction Y of the second wall, which helps to reduce the difficulty of assembly between the transfer tube 30 and the mounting frame 1212.

[0176] According to some embodiments of the present application, referring to Figure 5 and Figure 6 , and please refer to Figure 8 , Figure 8 Schematic diagram of the structure of the thermal management component 1211 provided in some embodiments of the present application. Along the thickness direction X of the thermal management component, the thermal management component 1211 has a first surface 1211c and a second surface 1211d arranged opposite to each other, the first surface 1211c forms a part of the cavity wall of the assembly cavity 11, the joint 1211b is connected to the second surface 1211d, and the projection of the joint 1211b in the thickness direction X of the thermal management component is located in the mounting hole 1212a.

[0177] Among them, the thermal management component 1211 has a first surface 1211c and a second surface 1211d arranged opposite to each other, the first surface 1211c forms a part of the cavity wall of the assembly cavity 11, and the joint 1211b is connected to the second surface 1211d, that is, the joint 1211b is arranged on the side of the thermal management component 1211 away from the assembly cavity 11 in the thickness direction X of the thermal management component.

[0178] The projection of the joint 1211b in the thickness direction X of the thermal management component is located in the mounting hole 1212a, that is, in the thickness direction X of the thermal management component, the projection of the joint 1211b does not overlap with the projection of the mounting frame 1212, so that the joint 1211b is not covered by the mounting frame 1212. It should be noted that since the thermal management component 1211 is disposed in the mounting hole 1212a of the mounting frame 1212, that is, the joint 1211b is a structure at least partially accommodated in the mounting hole 1212a.

[0179] In this embodiment, by arranging the joint 1211b on the side of the thermal management component 1211 away from the assembly cavity 11, and setting the projection of the joint 1211b in the thickness direction X of the thermal management component to be located within the mounting hole 1212a, the mounting frame 1212 can avoid the joint 1211b, so as to reduce the interference between the joint 1211b and the mounting frame 1212, facilitate subsequent maintenance of the joint 1211b, and facilitate the assembly of the joint 1211b with other components, which is beneficial to reducing the difficulty of assembly between the joint 1211b and other components.

[0180] In some embodiments, see Figure 6 As shown, the mounting frame 1212 has a third surface 1212c away from the assembly cavity 11 in the thickness direction X of the thermal management component, and the mounting hole 1212a extends to the third surface 1212c. In the thickness direction X of the thermal management component, along the direction from the first surface 1211c to the second surface 1211d, the joint 1211b does not exceed the third surface 1212c.

[0181] The third surface 1212 c is the outer surface of the mounting frame 1212 away from the assembly cavity 11 in the thickness direction X of the thermal management component.

[0182] Along the direction from the first surface 1211c to the second surface 1211d, the joint 1211b does not exceed the third surface 1212c, that is, the joint 1211b is located in the mounting hole 1212a, and the joint 1211b does not protrude from the third surface 1212c of the mounting frame 1212 in the thickness direction X of the thermal management component, that is, the joint 1211b is located as a whole in the mounting hole 1212a.

[0183] In this embodiment, the connector 1211b is arranged so as not to extend beyond the side of the mounting frame 1212 away from the assembly cavity 11 in the direction from the first surface 1211c to the second surface 1211d, so as to realize that the connector 1211b is located as a whole in the mounting hole 1212a. Thus, the mounting frame 1212 can also provide a certain degree of protection for the connector 1211b, thereby reducing the wear or bumping of the connector 1211b, and thus helping to increase the service life of the connector 1211b.

[0184] According to some embodiments of the present application, see Figure 7 As shown, the mounting hole 1212a includes a first hole segment 1212e and a second hole segment 1212f arranged along the thickness direction X of the thermal management component, the first hole segment 1212e is located on the side of the second hole segment 1212f close to the assembly cavity 11, the hole wall surface of the first hole segment 1212e and the hole wall surface of the second hole segment 1212f are connected by a step surface 1212g, the step surface 1212g is arranged facing the assembly cavity 11, the thermal management component 1211 is located in the first hole segment 1212e, and the thermal management component 1211 abuts against the step surface 1212g.

[0185] Among them, the mounting hole 1212a includes a first hole segment 1212e and a second hole segment 1212f arranged along the thickness direction X of the thermal management component, and the first hole segment 1212e is located on the side of the second hole segment 1212f close to the assembly cavity 11, that is, the mounting hole 1212a is a stepped hole structure, and the mounting hole 1212a includes at least two hole segments, namely the first hole segment 1212e and the second hole segment 1212f, and the first hole segment 1212e is closer to the assembly cavity 11 in the thickness direction X of the thermal management component than the second hole segment 1212f.

[0186] The hole wall surface of the first hole segment 1212e and the hole wall surface of the second hole segment 1212f are connected by a step surface 1212g, and the step surface 1212g is arranged facing the assembly cavity 11. That is, the projection of the hole wall surface of the second hole segment 1212f in the thickness direction X of the thermal management component is located in the first hole segment 1212e, so as to form a step surface 1212g arranged facing the assembly cavity 11 on the hole wall surface of the first hole segment 1212e and the hole wall surface of the second hole segment 1212f.

[0187] For example, in Figure 7 In the embodiment, the mounting hole 1212a only includes a first hole segment 1212e and a second hole segment 1212f connected to each other, that is, the mounting hole 1212a of the stepped hole structure is only provided with two hole segments, and the two hole segments are respectively the first hole segment 1212e and the second hole segment 1212f. Of course, in other embodiments, the number of hole segments of the mounting hole 1212a of the stepped hole structure may also be three, four, five or six, etc. For example, in some embodiments, the mounting hole 1212a may also include other hole segments located on the side of the first hole segment 1212e away from the second hole segment 1212f or other hole segments located on the side of the second hole segment 1212f away from the first hole segment 1212e.

[0188] It should be noted that in the embodiment where the joint 1211b is disposed on the second surface 1211d of the thermal management component 1211 and the joint 1211b is entirely located in the mounting hole 1212a, the joint 1211b is a structure located in the second hole section 1212f.

[0189] In this embodiment, the mounting hole 1212a has a first hole segment 1212e and a second hole segment 1212f arranged along the thickness direction X of the thermal management component. The hole wall surface of the first hole segment 1212e and the hole wall surface of the second hole segment 1212f are connected by a step surface 1212g, and the step surface 1212g is arranged facing the assembly cavity 11 in the thickness direction X of the thermal management component. Among them, by arranging the thermal management component 1211 in the first hole segment 1212e and abutting on the step surface 1212g, on the one hand, it is convenient to install the thermal management component 1211 in the mounting hole 1212a of the mounting frame 1212, which is conducive to reducing the assembly difficulty between the thermal management component 1211 and the mounting frame 1212. On the other hand, the step surface 1212g can also play a certain limiting and positioning role on the thermal management component 1211 in the thickness direction X of the thermal management component, which is conducive to improving the stability and reliability of the thermal management component 1211 installed on the mounting frame 1212.

[0190] According to some embodiments of this application, see Figure 7 As shown, the mounting frame 1212 has a third surface 1212c away from the assembly cavity 11 and a fourth surface 1212d facing the assembly cavity 11 in the thickness direction X of the thermal management component, the first hole section 1212e extends to the fourth surface 1212d, and the second hole section 1212f extends to the third surface 1212c. In the thickness direction X of the thermal management component, along the direction from the third surface 1212c to the fourth surface 1212d, the thermal management component 1211 does not extend beyond the fourth surface 1212d.

[0191] Among them, the third surface 1212c is the outer surface of the mounting frame 1212 on the side of the thermal management component 1211 facing away from the assembly cavity 11, and the fourth surface 1212d is the fourth surface 1212d of the mounting frame 1212 on the side of the thermal management component 1211 facing the assembly cavity 11, so that the fourth surface 1212d forms a part of the cavity wall of the assembly cavity 11.

[0192] The first hole segment 1212e extends to the fourth surface 1212d, and the second hole segment 1212f extends to the third surface 1212c. That is, the mounting hole 1212a only includes the first hole segment 1212e and the second hole segment 1212f, and the two ends of the mounting hole 1212a in the thickness direction X of the thermal management component pass through the third surface 1212c and the fourth surface 1212d respectively.

[0193] In the thickness direction X of the thermal management component, along the direction from the third surface 1212c to the fourth surface 1212d, the thermal management component 1211 does not exceed the fourth surface 1212d, that is, the thermal management component 1211 does not protrude from the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11, so that the thermal management component 1211 is located as a whole in the first hole section 1212e.

[0194] In this embodiment, by arranging the thermal management component 1211 so as not to extend beyond the side of the mounting frame 1212 facing the assembly cavity 11 in the direction from the third surface 1212c to the fourth surface 1212d, that is, the thermal management component 1211 does not extend beyond one end of the mounting hole 1212a penetrating the fourth surface 1212d in the thickness direction X of the thermal management component, the phenomenon that the thermal management component 1211 protrudes from the fourth surface 1212d of the mounting frame 1212 can be alleviated, which is beneficial to enhancing the protective effect of the mounting frame 1212 on the thermal management component 1211.

[0195] In some embodiments, see Figure 7 As shown, along the thickness direction X of the heat management component, the heat management component 1211 has a first surface 1211 c facing the assembly cavity 11 , and the first surface 1211 c is flush with the fourth surface 1212 d .

[0196] Among them, the first surface 1211c is flush with the fourth surface 1212d, that is, the surface of the thermal management component 1211 facing the assembly cavity 11 is coplanar with the surface of the mounting frame 1212 facing the assembly cavity 11, that is, the first surface 1211c is coplanar with the fourth surface 1212d.

[0197] In this embodiment, by setting the first surface 1211c of the thermal management component 1211 facing the assembly cavity 11 and the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11 to be flush with each other, on the one hand, it is convenient for manufacturing and processing, and on the other hand, it can reduce the unevenness of the cavity wall of the assembly cavity 11, which is beneficial to reducing the risk of collision between the battery cell 20 and the sharp part of the mounting frame 1212 or the sharp part of the thermal management component 1211.

[0198] According to some embodiments of the present application, see Figure 4 and Figure 5 As shown, the housing 10 may further include a support member 123, which is disposed in the mounting hole 1212a and connected to the hole wall of the mounting hole 1212a. Along the thickness direction X of the thermal management component, the support member 123 is located on the side of the thermal management component 1211 away from the assembly cavity 11 and abuts against the thermal management component 1211, and the projections of the support member 123 and the joint 1211b in the thickness direction X of the thermal management component do not overlap.

[0199] Among them, the support member 123 is located on the side of the thermal management component 1211 away from the assembly cavity 11 and abuts against the thermal management component 1211, that is, the thermal management component 1211 is located on the side of the support member 123 facing the assembly cavity 11, and the thermal management component 1211 abuts against the support member 123 along the thickness direction X of the thermal management component.

[0200] The projections of the support member 123 and the joint 1211b in the thickness direction X of the thermal management component do not overlap, that is, the support member 123 does not cover the joint 1211b in the thickness direction X of the thermal management component, that is, the support member 123 divides the mounting hole 1212a into multiple chambers, and the joint 1211b is located in the chamber, so that the joint 1211b does not overlap with the support member 123 in the thickness direction X of the thermal management component.

[0201] Optionally, the structure and shape of the support member 123 can be various. Figure 4 In the embodiment, the support member 123 is a plate-like structure extending along the third direction Z, and both ends of the support member 123 in the third direction Z are connected to the hole wall surface of the mounting hole 1212a.

[0202] Optionally, the number of the supporting members 123 disposed in the mounting hole 1212a may be one or more. Figure 4 In the embodiment, only one support member 123 is disposed in the mounting hole 1212a. Of course, in other embodiments, the number of support members 123 disposed in the mounting hole 1212a may be two, three, four or five. It should be noted that in the embodiment where the number of support members 123 disposed in the mounting hole 1212a is multiple, the multiple support members 123 may be a structure that crosses and is connected to each other, or the multiple support members 123 may be a structure that is arranged at intervals along the thickness direction Y of the second wall or along the third direction Z.

[0203] In this embodiment, by arranging the support member 123 in the mounting hole 1212a, the support member 123 is located on the side of the thermal management component 1211 away from the assembly cavity 11 in the thickness direction X of the thermal management component and abuts against the thermal management component 1211, so that the support member 123 can also play a certain supporting role for the thermal management component 1211, which is conducive to reducing the risk of deformation of the thermal management component 1211 during use, and the support member 123 can also play a certain protective role for the thermal management component 1211, which is conducive to alleviating the phenomenon of direct collision between the thermal management component 1211 and the external environment. In addition, by setting the projections of the support member 123 and the joint 1211b in the thickness direction X of the thermal management component to be non-overlapping, the interference effect between the support member 123 and the joint 1211b can also be reduced.

[0204] According to some embodiments of the present application, the thermal management component 1211 is welded to the mounting frame 1212. Of course, in other embodiments, the thermal management component 1211 can also be connected to the mounting frame 1212 by bolting, clamping or bonding.

[0205] In this embodiment, by welding the thermal management component 1211 to the mounting frame 1212 , it is helpful to improve the connection reliability between the thermal management component 1211 and the mounting frame 1212, so as to improve the stability and reliability of the thermal management component 1211 assembled on the mounting frame 1212.

[0206] According to some embodiments of the present application, the joint 1211b is welded to the thermal management component 1211. The joint 1211b may also be connected to the thermal management component 1211 by bolting, clamping, or bonding.

[0207] In this embodiment, by welding the joint 1211b to the thermal management component 1211, it is helpful to improve the connection reliability between the joint 1211b and the thermal management component 1211, so as to improve the stability and reliability of the joint 1211b assembled on the thermal management component 1211.

[0208] According to some embodiments of the present application, referring to Figure 8 , and please refer to Fig. 9 , Fig. 9 The structure of the thermal management component 1211 provided in some embodiments of the present application is exploded. The thermal management component 1211 includes a first plate 1211e and a second plate 1211f, which are stacked and connected along the thickness direction X of the thermal management component, and the first plate 1211e and the second plate 1211f jointly define a flow channel 1211a.

[0209] The first plate 1211e and the second plate 1211f are stacked and connected along the thickness direction X of the thermal management component. The connection structure between the first plate 1211e and the second plate 1211f can be various, such as welding or bonding.

[0210] The first plate body 1211e and the second plate body 1211f jointly define the flow channel 1211a, that is, the flow channel 1211a is formed between the first plate body 1211e and the second plate body 1211f.

[0211] In this embodiment, the thermal management component 1211 is provided with a first plate body 1211e and a second plate body 1211f which are stacked and connected along the thickness direction X of the thermal management component, and the first plate body 1211e and the second plate body 1211f jointly define a flow channel 1211a for accommodating a heat exchange medium, so as to form the flow channel 1211a inside the thermal management component 1211. The thermal management component 1211 of this structure has a simple structure and is easy to process and manufacture.

[0212] According to some embodiments of this application, please continue to refer to Figure 7 , Figure 8 and Fig. 9 As shown, along the thickness direction X of the thermal management component, the first plate body 1211e has a first plane 1211g facing the second plate body 1211f, and a groove 1211h is provided on the side of the second plate body 1211f facing the first plate body 1211e, and the groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a.

[0213] The groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a, that is, the first plane 1211g covers the notch of the groove 1211h, so that the flow channel 1211a is formed between the first plane 1211g and the groove wall surface of the groove 1211h, that is, the flow channel 1211a is formed in the area corresponding to the groove 1211h inside the thermal management component 1211. The first plane 1211g is a flat and continuous surface, and the first plane 1211g is perpendicular to the thickness direction X of the thermal management component.

[0214] It should be noted that the structure of the heat management component 1211 is not limited to this. In other embodiments, the heat management component 1211 may also be other structures. For example, the second plate 1211f may have a first plane 1211g facing the first plate 1211e, and the first plate 1211e may be provided with a groove 1211h on the side facing the second plate 1211f. The groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a. A groove 1211h is provided on one side of the body 1211e facing the second plate body 1211f and on one side of the second plate body 1211f facing the first plate body 1211e, and the groove 1211h of the first plate body 1211e and the groove 1211h of the second plate body 1211f are correspondingly arranged in the thickness direction X of the thermal management component, so that the groove wall surface of the groove 1211h of the first plate body 1211e and the groove wall surface of the groove 1211h of the second plate body 1211f jointly define the flow channel 1211a.

[0215] In this embodiment, by setting a groove 1211h on the side of the second plate 1211f facing the first plate 1211e, after the first plate 1211e and the second plate 1211f are stacked and connected with each other, the first plane 1211g of the first plate 1211e and the groove wall surface of the groove 1211h of the second plate 1211f can jointly form the flow channel 1211a of the thermal management component 1211, which has a simple structure, is easy to implement, and has high processing efficiency.

[0216] In some embodiments, reference Fig. 9 , and please refer to Fig.10 , Fig.10A front view of the heat management component 1211 provided in some embodiments of the present application facing the second plate 1211f in the first direction. Along the thickness direction X of the heat management component, a protrusion 1211k is formed on the side of the second plate 1211f away from the first plate 1211e and corresponding to the position of the groove 1211h.

[0217] Exemplarily, the groove 1211h disposed on the side of the second plate 1211f facing the first plate 1211e is formed by a stamping process, so as to form the groove 1211h on the side of the second plate 1211f facing the first plate 1211e, and form a protrusion 1211k on the side of the second plate 1211f away from the first plate 1211e and corresponding to the groove 1211h. Of course, the processing method of the groove 1211h disposed on the side of the second plate 1211f facing the first plate 1211e is not limited thereto. In other embodiments, the groove 1211h disposed on the side of the second plate 1211f facing the first plate 1211e can also be formed by a processing process such as casting, milling or etching.

[0218] In this embodiment, a protrusion 1211k is formed on the side of the second plate 1211f that is away from the first plate 1211e along the thickness direction X of the thermal management component and corresponds to the position of the groove 1211h, so that the groove 1211h is a structure that can be formed on the second plate 1211f by a stamping process, which helps to reduce the difficulty of forming the groove 1211h on the second plate 1211f and helps to increase the difficulty of processing and forming the groove 1211h on the second plate 1211f.

[0219] In some embodiments, see Figure 7 and Fig. 9 As shown, along the thickness direction X of the thermal management component, the second plate 1211f is located on the side of the first plate 1211e away from the assembly cavity 11. That is, in the thickness direction X of the thermal management component, the second plate 1211f and the assembly cavity 11 are respectively located on both sides of the first plate 1211e.

[0220] It should be noted that in the embodiment where the thermal management component 1211 has a first surface 1211c facing the assembly cavity 11, the surface of the first plate 1211e on the side away from the second plate 1211f in the thickness direction X of the thermal management component is the first surface 1211c.

[0221] In this embodiment, by setting the second plate body 1211f to be located on the side of the first plate body 1211e away from the assembly cavity 11, the protrusion 1211k formed by the second plate body 1211f is located outside the assembly cavity 11, so that the surface of the first plate body 1211e facing the assembly cavity 11 can be set as a plane. The battery 100 adopting this structure can reduce the interference between the protrusion 1211k on the second plate body 1211f and the battery cell 20 accommodated in the assembly cavity 11, which is beneficial to reduce the difficulty of assembling the battery cell 20 in the assembly cavity 11.

[0222] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, the box body 10 includes a first box body 12 and a second box body 13 . The first box body 12 and the second box body 13 overlap each other along the thickness direction X of the thermal management component and jointly define an assembly cavity 11 . The first box body 12 includes a first wall 121 .

[0223] The first box body 12 includes a first wall 121 , that is, the first wall 121 is a part of the first box body 12 .

[0224] In this embodiment, by setting the box body 10 as a first box body 12 and a second box body 13, and the first box body 12 and the second box body 13 are mutually overlapping along the thickness direction X of the thermal management component and jointly define the assembly cavity 11, the box body 10 adopting this structure can reduce the difficulty of assembling the battery cell 20 into the assembly cavity 11 of the box body 10, and can reduce the difficulty of manufacturing the box body 10.

[0225] In some embodiments, reference Figure 2 , Figure 3 and Figure 4 , and please refer to Fig.11 , Fig.11 A schematic diagram of the structure of the second box body 13 of the box body 10 provided in some embodiments of the present application. The first box body 12 also includes two second walls 122, and the two second walls 122 are connected to the first wall 121. The second box body 13 includes a third wall 131 and two fourth walls 132, and the two fourth walls 132 are connected to the third wall 131. The first wall 121 and the third wall 131 are arranged opposite to each other in the first direction, the two second walls 122 are arranged opposite to each other in the second direction, and the two fourth walls 132 are arranged opposite to each other in the third direction Z. The first direction is parallel to the thickness direction X of the thermal management component, and the first direction, the second direction and the third direction Z are perpendicular to each other.

[0226] The first direction is parallel to the thickness direction X of the thermal management component, the second direction is parallel to the thickness direction Y of the second wall, and the third direction Z is parallel to the thickness direction of the fourth wall 132. That is, the first wall 121 and the third wall 131 are arranged opposite to each other in the thickness direction X of the thermal management component, that is, the thermal management component 1211 and the third wall 131 are arranged opposite to each other in the thickness direction X of the thermal management component, and the two second walls 122 are arranged opposite to each other in the thickness direction Y of the second wall, and the two fourth walls 132 are arranged opposite to each other in the thickness direction of the fourth wall 132.

[0227] Exemplarily, the two second walls 122 are connected to the side of the first wall 121 facing the third wall 131 in the thickness direction X of the thermal management component. Similarly, the connection structure between the second wall 122 and the first wall 121 can be various, such as welding, clamping or bolting.

[0228] Exemplarily, the two fourth walls 132 are connected to the side of the third wall 131 facing the first wall 121 in the thickness direction X of the thermal management component. The fourth wall 132 and the third wall 131 may be an integrally formed structure, for example, the fourth wall 132 and the third wall 131 may be made by an integral forming process such as extrusion, casting or stamping. Of course, the fourth wall 132 and the third wall 131 may also be a structure that is separately arranged, for example, the fourth wall 132 may be connected to the third wall 131 by a structure such as welding, clamping or bolting.

[0229] In this embodiment, the first box body 12 includes a first wall 121 and two second walls 122 connected to the first wall 121, and the two second walls 122 are arranged opposite to each other along the second direction, and the second box body 13 includes a third wall 131 and two fourth walls 132 connected to the third wall 131, and the two fourth walls 132 are arranged opposite to each other along the third direction Z, so that the first box body 12 and the second box body 13 both form a "U"-like structure, so that on the one hand, it is convenient for the first box body 12 and the second box body 13 to overlap each other along the thickness direction X of the thermal management component to jointly define the assembly cavity 11 for accommodating the battery cell 20, and on the other hand, it can reduce the manufacturing difficulty of the first box body 12 and the second box body 13, and facilitate the subsequent maintenance of the battery cell 20 accommodated in the box body 10, which is beneficial to reduce the difficulty of later maintenance of the battery 100.

[0230] In some embodiments, see Figure 2 , Figure 3 and Fig.11 As shown, along the third direction Z, the first wall 121 is located between the two fourth walls 132 , and two sides of the first wall 121 are respectively connected to the two fourth walls 132 .

[0231] In which, along the third direction Z, the first wall 121 is located between the two fourth walls 132 , that is, the two fourth walls 132 are structures that clamp the first wall 121 in the third direction Z.

[0232] Along the third direction Z, both sides of the first wall 121 are respectively connected to the two fourth walls 132, that is, the two ends of the first wall 121 in the third direction Z are respectively abutted against and connected to the two fourth walls 132. By way of example, in an embodiment of the present application, the fourth wall 132 is screwed to the first wall 121 by bolts. Of course, in other embodiments, the connection structure between the fourth wall 132 and the first wall 121 may also be a welding connection or bonding, etc.

[0233] In this embodiment, by setting the first wall 121 as a structure located between the two fourth walls 132 in the third direction Z, and the first wall 121 is respectively connected to the fourth walls 132 on both sides in the third direction Z, so that the two fourth walls 132 are a structure that clamps the first wall 121 in the third direction Z, on the one hand, the assembly stability between the first box body 12 and the second box body 13 of the box body 10 can be improved, and it is convenient to assemble and connect the first wall 121 and the fourth wall 132 from the third direction Z, which is beneficial to reduce the assembly difficulty between the first wall 121 and the fourth wall 132. On the other hand, the closed interface between the first wall 121 and the fourth wall 132 can be realized as a structure perpendicular to the third direction Z, which is beneficial to improve the sealing effect between the first wall 121 and the fourth wall 132.

[0234] According to some embodiments of the present application, the present application further provides an electrical device, which includes the battery 100 of any of the above solutions, and the battery 100 is used to provide electrical energy to the electrical device.

[0235] The power-consuming device may be any of the aforementioned devices or systems using the battery 100 .

[0236] According to some embodiments of the present application, see Figures 2 to 11As shown, the present application provides a battery 100, which includes a box body 10, a battery cell 20, a transfer tube 30, two stoppers 40 and two insulating members 50. An assembly cavity 11 is formed inside the box body 10, and the box body 10 includes a first box body 12 and a second box body 13, and the first box body 12 and the second box body 13 overlap each other along the thickness direction X of the thermal management component and jointly define the assembly cavity 11. The first box body 12 further includes two second walls 122, both of which are connected to the first wall 121. The second box body 13 includes a third wall 131 and two fourth walls 132, both of which are connected to the third wall 131. The first wall 121 and the third wall 131 are arranged opposite to each other in the thickness direction X of the thermal management component, the two second walls 122 are arranged opposite to each other in the thickness direction Y of the second wall, and the two fourth walls 132 are arranged opposite to each other in the third direction Z. The first direction is parallel to the thickness direction X of the thermal management component, and the thickness direction X of the thermal management component, the thickness direction Y of the second wall and the third direction Z are perpendicular to each other. The battery cell 20 is accommodated in the assembly cavity 11. The first wall 121 includes a mounting frame 1212 and a thermal management component 1211. The mounting frame 1212 is provided with a mounting hole 1212a, and the mounting hole 1212a penetrates the mounting frame 1212 along the thickness direction X of the thermal management component. The thermal management component 1211 is disposed in the mounting hole 1212a and is welded to the mounting frame 1212. The second wall 122 is connected to the mounting frame 1212, and along the thickness direction Y of the second wall, the second wall 122 and the thermal management component 1211 are spaced apart. The mounting hole 1212a includes a first hole segment 1212e and a second hole segment 1212f arranged along the thickness direction X of the thermal management component. The first hole segment 1212e is located on the side of the second hole segment 1212f close to the assembly cavity 11. The hole wall surface of the first hole segment 1212e and the hole wall surface of the second hole segment 1212f are connected by a step surface 1212g. The step surface 1212g is arranged facing the assembly cavity 11. The thermal management component 1211 is located in the first hole segment 1212e, and the thermal management component 1211 abuts against the step surface 1212g. The thermal management component 1211 is used to manage the temperature of the battery cell 20. A flow channel 1211a is formed inside the thermal management component 1211. The flow channel 1211a is used to accommodate a heat exchange medium. Along the thickness direction X of the thermal management component, the thermal management component 1211 has a first surface 1211c and a second surface 1211d that are relatively arranged. The first surface 1211c forms a part of the cavity wall of the assembly cavity 11. The joint 1211b is welded to the second surface 1211d. The joint 1211b is connected to the flow channel 1211a. The projection of the joint 1211b in the thickness direction X of the thermal management component is located in the mounting hole 1212a.The mounting frame 1212 has a third surface 1212c away from the assembly cavity 11 and a fourth surface 1212d facing the assembly cavity 11 in the thickness direction X of the thermal management component, the first hole section 1212e extends to the fourth surface 1212d, the second hole section 1212f extends to the third surface 1212c, the joint 1211b does not exceed the third surface 1212c, and the first surface 1211c is flush with the fourth surface 1212d. The housing 10 also includes a support member 123, which is arranged in the mounting hole 1212a and connected to the hole wall of the mounting hole 1212a. Along the thickness direction X of the thermal management component, the support member 123 is located on the side of the thermal management component 1211 away from the assembly cavity 11 and abuts against the thermal management component 1211, and the projections of the support member 123 and the joint 1211b in the thickness direction X of the thermal management component do not overlap. The thermal management component 1211 includes a first plate body 1211e and a second plate body 1211f. The first plate body 1211e and the second plate body 1211f are stacked and connected along the thickness direction X of the thermal management component. Along the thickness direction X of the thermal management component, the second plate body 1211f is located on the side of the first plate body 1211e away from the assembly cavity 11. The first plate body 1211e has a first plane 1211g facing the second plate body 1211f. A groove 1211h is provided on the side of the second plate body 1211f facing the first plate body 1211e. A protrusion 1211k is formed on the side of the second plate body 1211f away from the first plate body 1211e and corresponding to the position of the groove 1211h. The groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a. The transfer tube 30 is used to transport the heat exchange medium. The transfer tube 30 is arranged on the mounting frame 1212. The transfer tube 30 has a first end 31 and a second end 32 opposite to each other. The first end 31 is connected to the joint 1211b, and the second end 32 is located on the side of the second wall 122 away from the heat management component 1211 in the thickness direction Y of the second wall. The second end 32 is used to communicate with external components. The mounting frame 1212 is provided with a mounting channel 1212b. The mounting channel 1212b extends along the thickness direction Y of the second wall. One end of the mounting channel 1212b extends to the hole wall surface of the mounting hole 1212a, and the other end extends to the outer surface of the mounting frame 1212. At least a portion of the transfer tube 30 is penetrated in the mounting channel 1212b. Both limit members 40 are connected to the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11 in the thickness direction X of the thermal management component, and the two limit members 40 are respectively located between the thermal management component 1211 and the two second walls 122 in the thickness direction Y of the second wall, and a plurality of battery cells 20 are arranged between the two limit members 40. The limit members 40 are configured to allow the battery cells 20 to abut against them along the thickness direction Y of the second wall, and each insulating member 50 is arranged between a limit member 40 and a plurality of battery cells 20 in the thickness direction Y of the second wall.Along the thickness direction X of the thermal management component, the battery cell 20 is arranged corresponding to the thermal management component 1211, and the projection of the insulating member 50 does not overlap with the projection of the thermal management component 1211, and along the thickness direction Y of the second wall, a spacing space 14 is formed between the stopper 40 and the second wall 122, and the spacing space 14 is used to accommodate the wiring harness or battery management system of the battery 100. The stopper 40 includes a first stopper 41 and a second stopper 42, the first stopper 41 and the second stopper 42 are stacked and connected to each other along the thickness direction X of the thermal management component, the second stopper 42 is connected to the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11, and the second stopper 42 and the mounting frame 1212 are an integrally formed structure.

[0237] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0238] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: A box body, with an assembly cavity formed inside; as well as A battery cell is accommodated in the assembly cavity; Wherein, the box body has a first wall, the first wall includes a thermal management component for managing the temperature of the battery cell, a flow channel is formed inside the thermal management component, the flow channel is used to accommodate a heat exchange medium, the thermal management component is provided with a joint, the joint is connected to the flow channel, and the joint is located outside the assembly cavity.

2. The battery according to claim 1, characterized in that Along the thickness direction of the heat management component, the heat management component has a first surface and a second surface that are oppositely arranged, the first surface forms a part of the cavity wall surface of the assembly cavity, and the joint is connected to the second surface.

3. The battery according to claim 1, characterized in that The first wall further comprises: A mounting frame, provided with a mounting hole, wherein the mounting hole penetrates the mounting frame along the thickness direction of the thermal management component; Wherein, the thermal management component is arranged in the mounting hole and connected to the mounting frame.

4. The battery according to claim 3, characterized in that The box also includes: The second wall is connected to the mounting frame. The second wall is spaced apart from the thermal management component along the thickness direction of the second wall. The thickness direction of the second wall is perpendicular to the thickness direction of the thermal management component.

5. The battery according to claim 4, characterized in that Along the thickness direction of the thermal management component, a limiting member is connected to a side of the mounting frame facing the assembly cavity; The limiting member is located between the second wall and the thermal management component in the thickness direction of the second wall, and the limiting member is configured to allow the battery cell to abut against the limiting member in the thickness direction of the second wall.

6. The battery according to claim 5, characterized in that The battery also includes: An insulating member is arranged between the limiting member and the battery cell along the thickness direction of the second wall.

7. The battery according to claim 6, characterized in that Along the thickness direction of the thermal management component, the battery cell and the thermal management component are arranged correspondingly, and the projection of the insulating member does not overlap with the projection of the thermal management component.

8. The battery according to claim 5, characterized in that Along the thickness direction of the second wall, a spacing space is formed between the limiting member and the second wall.

9. The battery according to claim 4, characterized in that The battery also includes: A transfer tube, used for conveying the heat exchange medium, the transfer tube being arranged on the mounting frame; The transfer tube has a first end and a second end opposite to each other, the first end is connected to the joint, the second end is located on a side of the second wall away from the thermal management component in the thickness direction of the second wall, and the second end is used to communicate with an external component.

10. The battery according to claim 9, characterized in that The mounting frame is provided with a mounting channel, and the mounting channel extends to the hole wall surface of the mounting hole; Wherein, at least a portion of the transfer tube is inserted into the installation channel.

11. The battery according to claim 10, characterized in that The mounting channel extends along the thickness direction of the second wall, one end of the mounting channel extends to the hole wall surface of the mounting hole, and the other end of the mounting channel extends to the outer surface of the mounting frame.

12. The battery according to claim 3, characterized in that Along the thickness direction of the heat management component, the heat management component has a first surface and a second surface arranged opposite to each other, the first surface forms a part of the cavity wall surface of the assembly cavity, and the joint is connected to the second surface; Wherein, a projection of the joint in the thickness direction of the thermal management component is located within the mounting hole.

13. The battery according to claim 12, characterized in that The mounting frame has a third surface facing away from the assembly cavity in the thickness direction of the thermal management component, and the mounting hole extends to the third surface; Wherein, in the thickness direction of the thermal management component, along the direction from the first surface to the second surface, the joint does not extend beyond the third surface.

14. The battery according to claim 3, characterized in that The mounting hole comprises a first hole segment and a second hole segment arranged along the thickness direction of the thermal management component, the first hole segment is located on a side of the second hole segment close to the assembly cavity, the hole wall surface of the first hole segment and the hole wall surface of the second hole segment are connected by a step surface, and the step surface is arranged facing the assembly cavity; Wherein, the thermal management component is located in the first hole section, and the thermal management component abuts against the step surface.

15. The battery according to claim 14, characterized in that The mounting frame has a third surface facing away from the assembly cavity and a fourth surface facing the assembly cavity in the thickness direction of the thermal management component, the first hole segment extends to the fourth surface, and the second hole segment extends to the third surface; Wherein, in the thickness direction of the thermal management component, along the direction from the third surface to the fourth surface, the thermal management component does not extend beyond the fourth surface.

16. The battery according to claim 15, characterized in that Along the thickness direction of the heat management component, the heat management component has a first surface facing the assembly cavity, and the first surface is flush with the fourth surface.

17. The battery according to claim 3, characterized in that The box also includes: A support member is arranged in the mounting hole and connected to the hole wall of the mounting hole. Along the thickness direction of the thermal management component, the support member is located on the side of the thermal management component away from the assembly cavity and abuts against the thermal management component, and the projections of the support member and the joint in the thickness direction of the thermal management component do not overlap.

18. The battery according to claim 3, characterized in that The thermal management component is connected to the mounting frame by welding.

19. The battery according to claim 1, characterized in that The joint is connected to the thermal management component by welding.

20. The battery according to any one of claims 1 to 19, characterized in that The heat management component includes a first plate body and a second plate body, the first plate body and the second plate body are stacked and connected along the thickness direction of the heat management component, and the first plate body and the second plate body jointly define the flow channel.

21. The battery according to claim 20, characterized in that Along the thickness direction of the thermal management component, the first plate body has a first plane facing the second plate body, and a groove is provided on a side of the second plate body facing the first plate body, and a groove wall surface of the groove and the first plane together define the flow channel.

22. The battery according to claim 21, characterized in that Along the thickness direction of the heat management component, a protrusion is formed on a side of the second plate body away from the first plate body and corresponding to the position of the groove.

23. The battery according to claim 22, characterized in that Along the thickness direction of the heat management component, the second plate body is located on a side of the first plate body away from the assembly cavity.

24. The battery according to claim 1, characterized in that The box body includes a first box body and a second box body. The first box body and the second box body overlap each other along the thickness direction of the thermal management component and jointly define the assembly cavity. The first box body includes the first wall.

25. The battery according to claim 24, characterized in that The first box body further includes two second walls, both of which are connected to the first wall, and the second box body includes a third wall and two fourth walls, both of which are connected to the third wall; Among them, the first wall and the third wall are arranged opposite to each other in the first direction, the two second walls are arranged opposite to each other in the second direction, and the two fourth walls are arranged opposite to each other in the third direction. The first direction is parallel to the thickness direction of the thermal management component, and the first direction, the second direction and the third direction are perpendicular to each other.

26. The battery according to claim 25, characterized in that Along the third direction, the first wall is located between the two fourth walls, and two sides of the first wall are respectively connected to the two fourth walls.

27. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 26, wherein the battery is used to provide electrical energy.

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