Battery and electric device

Abstract

The present application relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises a case and battery cells. An assembly cavity is formed in the case. The battery cells are accommodated in the assembly cavity. The case is provided with a first wall; the first wall comprises a heat management part used for managing the temperature of the battery cells; a flow channel is formed inside the heat management part; the flow channel is used for accommodating a heat exchange medium; the heat management part is provided with joints; the joints are communicated with the flow channel; and the joints are located outside the assembly cavity. On one hand, the battery facilitates convenient connection between the joints and other parts, so as to reduce the difficulty in battery assembly and the difficulty in joint maintenance. On the other hand, the available space in the case can be expanded, helping to improve the internal space utilization rate of the case; in addition, the phenomenon that the heat exchange medium enters the assembly cavity when leakage occurs at the connection positions between the joints and the flow channel and at the connection positions between the joints and the other parts can be reduced, reducing the risk of short-circuit of the battery during use.

Description

Battery and electric device

[0001] Cross-reference to Related Applications

[0002] This application claims priority to Chinese Patent Application 2024211164324, filed May 21, 2024, entitled “Battery and electric device,” the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, in particular to a battery and an electric device. BACKGROUND

[0004] In recent years, new energy vehicles have made a leap in development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable important role. The battery is composed of a box body and battery monomers contained in the box body. As a core component of new energy vehicles, the battery has high requirements in terms of service life and reliability. Among them, the battery monomers in the battery will generate a large amount of heat during continuous charging and discharging. Therefore, a thermal management component for adjusting the temperature of the battery monomers is provided in the box body of the battery to alleviate the phenomenon of temperature rise in the battery. However, the existing battery is prone to liquid leakage during use, which may cause short circuit and other risks, thereby adversely affecting the reliability of the battery.

[0005] SUMMARY

[0006] The embodiments of the present application provide a battery and an electric device, which can effectively improve the reliability of the battery.

[0007] In a first aspect, the embodiments of the present application provide a battery, comprising a box body and a battery monomer; the box body has an assembly cavity formed inside; the battery monomer is contained in the assembly cavity; wherein the box body has a first wall, the first wall comprises a thermal management component for managing the temperature of the battery monomer, the thermal management component has a flow channel formed inside, the flow channel is used to contain a heat exchange medium, the thermal management component is provided with a joint, the joint is in communication with the flow channel, and the joint is located outside the assembly cavity.

[0008] In the technical scheme, the first wall of the box body comprises a heat management component, and a flow channel for containing heat exchange medium is formed in the heat management component, so that the heat management component is integrated with the box body, and the heat management component is part of the first wall of the box body, so that heat exchange with the battery cells contained in the assembly cavity can be achieved through the heat management component, so that the temperature of the battery cells can be managed, and the box body can be simplified and lightened, thereby reducing the risk of temperature rise of the battery during use and reducing the weight of the battery. The joint connected with the flow channel is arranged outside the assembly cavity of the box body, so that the connection position of the joint and the flow channel and the connection position of the joint and other components are located outside the assembly cavity. The battery with this structure can facilitate the connection and assembly of the joint and other components, reduce the assembly difficulty of the battery, reduce the difficulty of subsequent maintenance of the joint, reduce the maintenance cost of the battery in the later period, and can expand the available space inside the box body, improve the utilization rate of the internal space of the box body, and when leakage occurs at the connection position of the joint and the flow channel and the connection position of the joint and other components, the phenomenon of heat exchange medium entering the assembly cavity can be alleviated, thereby reducing the short circuit risk of the battery during use and improving the use reliability of the battery.

[0009] In some embodiments, along the thickness direction of the heat management component, the heat management component has oppositely arranged first and second surfaces, the first surface forms part of the cavity wall surface of the assembly cavity, and the joint is connected to the second surface.

[0010] In the technical scheme, the joint is connected to the second surface of the heat management component away from the assembly cavity, so that the joint is located on the side of the heat management component away from the assembly cavity. The battery with this structure can facilitate the assembly of the joint and other components, reduce the assembly difficulty of the battery, and the thickness of the heat management component will not be affected by the connection position of the joint, thereby facilitating further optimization of the thickness of the heat management component to improve the space utilization of the battery. On the other hand, the joint and the assembly cavity can be located on the two sides of the heat management component, respectively, so that when leakage occurs at the connection position of the joint and the flow channel and the connection position of the joint and other components, the phenomenon of heat exchange medium entering the assembly cavity can be further alleviated, thereby further reducing the short circuit risk of the battery during use and improving the use reliability of the battery.

[0011] In some embodiments, the first wall further comprises a mounting bracket; the mounting bracket is provided with a mounting hole, the mounting hole penetrates through the mounting bracket along the thickness direction of the heat management component; and the heat management component is arranged in the mounting hole and connected to the mounting bracket.

[0012] In the technical solution, the first wall is further provided with a mounting rack for mounting the thermal management component, so as to facilitate assembly and fastening of the thermal management component. By arranging the thermal management component in the mounting hole of the mounting rack and connecting the thermal management component to the mounting rack, on the one hand, the assembly reliability and stability of the thermal management component on the mounting rack can be further improved, and the assembly difficulty between the thermal management component and the mounting rack can be reduced. On the other hand, the thermal management component can be protected by the mounting rack, so as to reduce the risk of wear or collision of the thermal management component, and the service life of the thermal management component can be improved.

[0013] In some embodiments, the box further comprises a second wall; the second wall is connected to the mounting rack and 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.

[0014] In the technical solution, the second wall of the box is connected to the mounting rack 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 by the mounting rack. Therefore, the weight of the second wall itself or the impact force received by the second wall will not directly act on the thermal management component, thereby reducing the load received by the thermal management component and reducing the risk of damage to the thermal management component. In addition, the assembly difficulty between the second wall and the first wall can be reduced.

[0015] In some embodiments, along the thickness direction of the thermal management component, the side of the mounting rack facing the assembly cavity is connected to a limiting piece; the limiting piece is located between the second wall and the thermal management component in the thickness direction of the second wall, and the limiting piece is configured to abut against the battery cell along the thickness direction of the second wall.

[0016] In the technical solution, the limiting piece is connected to the side of the mounting rack facing the assembly cavity, and the limiting piece can abut against the battery cell in the thickness direction of the second wall. Therefore, the battery cell accommodated in the assembly cavity can be limited, which can alleviate the phenomenon of shaking or displacement of the battery cell during use, and can reduce the collision phenomenon between the battery cell and the second wall. In addition, by arranging the limiting piece 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 can improve the utilization rate of the internal space of the battery, and can reduce the phenomenon that the stress received by the limiting piece is transmitted to the thermal management component.

[0017] In some embodiments, the battery further comprises an insulating piece; the insulating piece is arranged between the limiting piece and the battery cell along the thickness direction of the second wall.

[0018] In the technical solution, the insulating member is arranged between the limiting member and the battery monomer, which can improve the insulation and isolation effect between the limiting member and the battery monomer, and reduce the risk of short circuit between the limiting member and the battery monomer, and the insulating member can also play a certain buffering role between the limiting member and the battery monomer.

[0019] In some embodiments, the battery monomer and the thermal management component are arranged correspondingly along the thickness direction of the thermal management component, and the projection of the insulating member does not overlap with the projection of the thermal management component.

[0020] In the technical solution, the battery monomer is arranged correspondingly along the thickness direction of the thermal management component, which can improve the heat exchange effect between the thermal management component and the battery monomer, and improve the effect of the thermal management component on managing the temperature of the battery monomer. In addition, the projection of the insulating member in the thickness direction of the thermal management component does not overlap with the projection of the thermal management component in the thickness direction of the thermal management component, so that the insulating member does not occupy the space of the thermal management component corresponding to the battery monomer in the thickness direction of the thermal management component, which is beneficial to improving the energy density of the battery.

[0021] In some embodiments, a spacing space is formed between the limiting member and the second wall along the thickness direction of the second wall.

[0022] In the technical solution, a spacing space is formed between the limiting member and the second wall along the thickness direction of the second wall, so that the limiting member and the second wall are arranged in a spaced manner along 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 limiting member, so that when the second wall is subjected to external impact, the phenomenon that the limiting member is directly subjected to the impact force from the second wall can be alleviated, thereby reducing the external impact force on the battery monomer. On the other hand, other components inside the battery can be arranged in the spacing space between the limiting member and the second wall, which is beneficial to improving the utilization rate of the internal space of the battery.

[0023] In some embodiments, the battery further comprises an adapter pipe; the adapter pipe is used for conveying heat exchange medium, and the adapter pipe is arranged on the mounting frame; wherein the adapter pipe has opposite first and second ends, the first end is connected to the connector, and the second end is located on the 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 for communicating with an external component.

[0024] In the technical scheme, the battery is further provided with an adapter pipe, the adapter pipe is arranged on the mounting rack, the first end of the adapter pipe is connected with the joint, the adapter pipe is communicated with the flow channel inside the thermal management component through the joint, so that the adapter pipe can input the heat exchange medium into the flow channel or output the heat exchange medium in the flow channel, and the second end of the adapter pipe is arranged 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 of the adapter pipe and the joint and the connection position of the adapter pipe and the external component are separated from each other, which can further reduce the risk of the heat exchange medium entering the assembly cavity after leakage, and facilitate the assembly and connection of the adapter pipe and the external component, thereby reducing the assembly difficulty between the adapter pipe and the external component.

[0025] In some embodiments, the mounting rack is provided with a mounting channel, the mounting channel extends to the hole wall surface of the mounting hole; and at least part of the adapter pipe is arranged in the mounting channel.

[0026] In the technical scheme, the mounting channel is arranged on the mounting rack, the mounting channel extends through the hole wall surface of the mounting hole, and at least part of the adapter pipe is arranged in the mounting channel, so that the adapter pipe can be connected with the joint. The battery with this structure can realize that part of the adapter pipe is located inside the mounting rack, which can improve the stability and reliability of the adapter pipe mounted on the mounting rack, and the mounting rack can also protect the adapter pipe to some extent to reduce the risk of wear or collision of the adapter pipe, thereby improving the service life of the adapter pipe.

[0027] In some embodiments, the mounting channel extends in 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 rack.

[0028] In the technical scheme, the mounting channel is arranged to extend in the thickness direction of the second wall, and the two ends of the mounting channel extend through the hole wall surface of the mounting hole and the outer surface of the mounting rack, respectively, so that the adapter pipe can be assembled with the mounting rack by inserting the adapter pipe into the mounting channel in the thickness direction of the second wall, thereby reducing the assembly difficulty between the adapter pipe and the mounting rack.

[0029] In some embodiments, in the thickness direction of the thermal management component, the thermal management component has oppositely arranged first and second surfaces, the first surface forms part of the cavity wall surface of the assembly cavity, and the joint is connected to the second surface; and a projection of the joint in the thickness direction of the thermal management component is located in the mounting hole.

[0030] In the technical solution, the joint is arranged on the side of the heat management component away from the assembly cavity, and the projection of the joint in the thickness direction of the heat management component is arranged in the mounting hole, so that the mounting frame can avoid the joint, reduce the interference between the joint and the mounting frame, facilitate the subsequent maintenance of the joint, facilitate the assembly of the joint and other components, and reduce the assembly difficulty between the joint and other components.

[0031] In some embodiments, the mounting frame has a third surface away from the assembly cavity in the thickness direction of the heat management component, and the mounting hole extends to the third surface; wherein in the thickness direction of the heat management component, in the direction from the first surface to the second surface, the joint does not exceed the third surface.

[0032] In the technical solution, the joint is arranged on the side of the heat management component away from the assembly cavity, and the projection of the joint in the thickness direction of the heat management component is arranged in the mounting hole, so that the mounting frame can avoid the joint, reduce the interference between the joint and the mounting frame, facilitate the subsequent maintenance of the joint, facilitate the assembly of the joint and other components, and reduce the assembly difficulty between the joint and other components.

[0033] In some embodiments, the mounting hole includes a first hole section and a second hole section arranged in the thickness direction of the heat management component, the first hole section is located on the side of the second hole section close to the assembly cavity, the hole wall surface of the first hole section and the hole wall surface of the second hole section are connected by a step surface, and the step surface is arranged to face the assembly cavity; wherein the heat management component is located in the first hole section, and the heat management component abuts against the step surface.

[0034] In the technical solution, the mounting hole has a first hole section and a second hole section arranged in the thickness direction of the heat management component, the hole wall surface of the first hole section and the hole wall surface of the second hole section are connected by a step surface, and the step surface is arranged to face the assembly cavity in the thickness direction of the heat management component, wherein the heat management component is arranged in the first hole section and abuts against the step surface, which on one hand facilitates the installation of the heat management component in the mounting hole of the mounting frame, and on the other hand the step surface can limit and position the heat management component in the thickness direction of the heat management component, thereby improving the stability and reliability of the heat management component installed on the mounting frame.

[0035] In some embodiments, the mounting frame has a third surface away from the assembly cavity and a fourth surface facing the assembly cavity in the thickness direction of the heat management component, the first hole section extends to the fourth surface, and the second hole section extends to the third surface; wherein in the thickness direction of the heat management component, in the direction from the third surface to the fourth surface, the heat management component does not exceed the fourth surface.

[0036] In the technical solution, the heat management component is arranged not to protrude from the side of the mounting frame facing the assembly cavity in the direction in which the third surface points to the fourth surface, that is, the heat management component does not protrude from the end of the mounting hole penetrating the fourth surface in the thickness direction of the heat management component, so that the phenomenon that the heat management component protrudes from the fourth surface of the mounting frame can be alleviated, and the protection of the mounting frame on the heat management component can be improved.

[0037] In some embodiments, the heat management component has a first surface facing the assembly cavity in the thickness direction of the heat management component, and the first surface is flush with the fourth surface.

[0038] In the technical solution, the first surface of the heat management component facing the assembly cavity and the fourth surface of the mounting frame facing the assembly cavity are arranged to be flush with each other, which facilitates manufacturing and processing, reduces the phenomenon that the cavity wall surface of the assembly cavity is uneven, and reduces the risk of collision between the battery monomer and the sharp part of the mounting frame or the sharp part of the heat management component.

[0039] In some embodiments, the box further includes a support arranged in the mounting hole and connected to the hole wall surface of the mounting hole, the support is located on the side of the heat management component away from the assembly cavity and abuts against the heat management component in the thickness direction of the heat management component, and the projections of the support and the joint in the thickness direction of the heat management component do not overlap.

[0040] In the technical solution, the support is arranged in the mounting hole, and the support is located on the side of the heat management component away from the assembly cavity and abuts against the heat management component in the thickness direction of the heat management component, so that the support can also support the heat management component, which reduces the risk of deformation of the heat management component during use, and the support can also protect the heat management component, which reduces the phenomenon that the heat management component directly collides with the external environment. In addition, the projections of the support and the joint in the thickness direction of the heat management component do not overlap, so that the interference between the support and the joint can be reduced.

[0041] In some embodiments, the heat management component is welded to the mounting frame.

[0042] In the technical solution, the heat management component is welded to the mounting frame, which improves the connection reliability between the heat management component and the mounting frame, and improves the stability and reliability of the heat management component assembled on the mounting frame.

[0043] In some embodiments, the joint is welded to the heat management component.

[0044] In the technical solution, the joint is welded to the heat management component, which helps to improve the connection reliability between the joint and the heat management component, and improve the stability and reliability of the joint assembled on the heat management component.

[0045] In some embodiments, 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 a flow channel.

[0046] In the technical solution, the heat management component is provided with the first plate body and the second plate body stacked and connected along the thickness direction of the heat management component, and the first plate body and the second plate body jointly define a flow channel for accommodating the heat exchange medium, so as to form the flow channel inside the heat management component. The heat management component with this structure is simple in structure and convenient to process and manufacture.

[0047] In some embodiments, along the thickness direction of the heat management component, the first plate body has a first plane facing the second plate body, and the side of the second plate body facing the first plate body is provided with a groove, and the groove wall surface of the groove and the first plane jointly define a flow channel.

[0048] In the technical solution, by providing the 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 surface of the second plate body can jointly form the flow channel of the heat management component. The structure is simple, easy to realize, and high in processing efficiency.

[0049] In some embodiments, along the thickness direction of the heat management component, the side of the second plate body away from the first plate body and corresponding to the position of the groove is formed with a protrusion.

[0050] In the technical solution, by forming the protrusion on the side of the second plate body away from the first plate body and corresponding to the position of the groove along the thickness direction of the heat management component, the groove is a structure that can be formed on the second plate body by stamping process, thereby facilitating to reduce the difficulty of forming the groove on the second plate body, and improving the difficulty of processing and forming the groove on the second plate body.

[0051] In some embodiments, along the thickness direction of the heat management component, the second plate body is located on the side of the first plate body away from the assembly cavity.

[0052] In the technical solution, by arranging the second plate body on the side of the first plate body away from the assembly cavity, the protrusion formed on 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 arranged as a plane. The battery with this structure can reduce the interference between the protrusion on the second plate body and the battery monomer accommodated in the assembly cavity, and facilitate the assembly of the battery monomer in the assembly cavity.

[0053] In some embodiments, the box comprises a first box body and a second box body, the first box body and the second box body are mutually covered along the thickness direction of the thermal management component and jointly define the assembly cavity, and the first box body comprises a first wall.

[0054] In the above technical solution, by setting the box as the first box body and the second box body, and the first box body and the second box body are mutually covered along the thickness direction of the thermal management component and jointly define the assembly cavity, the box adopting this structure can reduce the difficulty of assembling the battery monomer into the assembly cavity of the box, and can reduce the manufacturing difficulty of the box.

[0055] In some embodiments, the first box body further comprises two second walls, both of which are connected to the first wall, the second box body comprises 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 oppositely arranged in the first direction, the two second walls are oppositely arranged in the second direction, and the two fourth walls are oppositely arranged 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.

[0056] In the above technical solution, the first box body comprises a first wall and two second walls connected to the first wall, and the two second walls are oppositely arranged along the second direction, the second box body comprises a third wall and two fourth walls connected to the third wall, and the two fourth walls are oppositely arranged along the third direction, so that the first box body and the second box body both form a structure similar to "U", thereby on the one hand facilitating the first box body and the second box body to be mutually covered along the thickness direction of the thermal management component and jointly define the assembly cavity for accommodating the battery monomer, on the other hand, the manufacturing difficulty of the first box body and the second box body can be reduced, and the battery monomer accommodated in the box can be conveniently maintained subsequently, which is conducive to reducing the difficulty of later maintenance of the battery.

[0057] In some embodiments, along the third direction, the first wall is located between the two fourth walls, and the two sides of the first wall are respectively connected with the two fourth walls.

[0058] 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 two sides of the first wall are respectively connected with the fourth walls in the third direction, so that the two fourth walls are structures clamping 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 can be improved, and the first wall and the fourth wall can be conveniently assembled and connected from the third direction, which is conducive to reducing the assembly difficulty between the first wall and the fourth wall, on the other hand, the closed interface of the first wall and the fourth wall can be realized as a structure perpendicular to the third direction, which is conducive to improving the closing effect between the first wall and the fourth wall.

[0059] In a second aspect, the embodiments of the present application further provide a power utilization device, comprising the battery as described above, and the battery is configured to provide electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0060] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0061] FIG. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0062] FIG. 2 is an exploded structural diagram of a battery according to some embodiments of the present application;

[0063] FIG. 3 is a structural schematic diagram of a first box body of a box according to some embodiments of the present application;

[0064] FIG. 4 is an exploded structural diagram of the first box body of the box according to some embodiments of the present application;

[0065] FIG. 5 is a partial sectional view of the battery according to some embodiments of the present application;

[0066] FIG. 6 is a partial enlarged view of A of the battery shown in FIG. 5;

[0067] FIG. 7 is a partial enlarged view of B of the battery shown in FIG. 5;

[0068] FIG. 8 is a structural schematic diagram of a thermal management component according to some embodiments of the present application;

[0069] FIG. 9 is an exploded structural diagram of the thermal management component according to some embodiments of the present application;

[0070] FIG. 10 is a front view of the thermal management component facing the second plate body in a first direction according to some embodiments of the present application;

[0071] FIG. 11 is a structural schematic diagram of a second box body of the box according to some embodiments of the present application.

[0072] Icon: 1000-vehicle; 100-battery; 10-box body; 11-assembling 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 body; 1211f-second plate body; 1211g-first plane; 1211h-groove; 1211k-boss; 1212-mounting frame; 1212a-mounting hole; 1212b-mounting channel; 1212c-third surface; 1212d-fourth surface; 1212e-first hole section; 1212f-second hole section; 1212g-step surface; 122-second wall; 123-support; 13-second box body; 131-third wall; 132-fourth wall; 14-interval space; 20-battery cell; 30-adaptor pipe; 31-first end; 32-second end; 40-limiting piece; 41-first limiting part; 42-second limiting part; 50-insulating piece; 200-controller; 300-motor; X-thickness direction of the thermal management component; Y-thickness direction of the second wall; Z-third direction. DETAILED DESCRIPTION

[0073] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0074] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, rather than to describe a particular order or primary and secondary relationship.

[0075] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments.

[0076] In the description of the present application, it should be noted that unless specifically stated and limited otherwise, the terms "mounting", "connected", "connection", "attach" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0077] The term "and / or" in the present application is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects have an "or" relationship.

[0078] In the embodiments of the present application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the present application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the present application.

[0079] "Multiple" appearing in the present application means more than two (including two).

[0080] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0081] 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-acid battery, etc. The embodiments of the present application are not limited thereto.

[0082] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0083] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0084] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector.

[0085] In some embodiments, the electrode assembly further comprises a separator disposed between the positive electrode and the negative electrode.

[0086] In some embodiments, the separator is a separator film. The separator film can be of various types, and any known porous structure separator film with good chemical stability and mechanical stability can be used.

[0087] In some embodiments, the battery cell further comprises an electrolyte, which functions to conduct ions between the positive electrode and the negative electrode. The electrolyte can be in a liquid state, a gel state, or a solid state. Among them, the liquid electrolyte comprises an electrolyte salt and a solvent.

[0088] In some embodiments, the electrode assembly is in a jelly-roll structure. The positive electrode sheet and the negative electrode sheet are wound into the jelly-roll structure.

[0089] In some embodiments, the electrode assembly is in a stack structure.

[0090] For example, a plurality of positive electrode sheets and a plurality of negative electrode sheets can be provided, and the plurality of positive electrode sheets and the plurality of negative electrode sheets are alternately stacked.

[0091] For example, a plurality of positive electrode sheets can be provided, and the negative electrode sheet is folded to form a plurality of folded segments which are stacked, and one positive electrode sheet is clamped between adjacent folded segments.

[0092] For example, the positive electrode sheet and the negative electrode sheet are both folded to form a plurality of folded segments which are stacked.

[0093] For example, a plurality of separators can be provided, and each of the plurality of separators is disposed between any adjacent positive electrode sheet or negative electrode sheet.

[0094] For example, the separators can be continuously provided, and each of the separators is disposed between any adjacent positive electrode sheet or negative electrode sheet by folding or winding.

[0095] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a polygonal shape.

[0096] In some embodiments, the electrode assembly is provided with a tab, and the tab can guide current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0097] In some embodiments, the battery cell can comprise a housing. The housing is used to encapsulate the electrode assembly and other components such as the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0098] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shaped battery cell, the prismatic battery cell including but not limited to a square cell, a blade cell, a multi-prismatic battery cell, for example, a hexagonal prismatic battery cell, etc.

[0099] The battery referred to 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.

[0100] In some embodiments, the battery can be a battery module, when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0101] In some embodiments, the battery can be a battery pack, the battery pack including a box body and battery cells, the battery cells or battery modules being contained in the box body.

[0102] In some embodiments, the box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and longitudinal beam of the vehicle.

[0103] In some embodiments, the battery can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0104] The battery has the outstanding advantages of high energy density, small environmental pollution, large power density, long service life, wide adaptation range, and small self-discharge coefficient, and is an important part of the development of new energy today. The development of battery technology needs to consider many design factors, such as energy density, cycle life, discharge capacity, and charge-discharge rate performance parameters, and in addition, the safety of the battery needs to be considered.

[0105] In battery technology, the battery usually includes a box body and a plurality of battery cells arranged in the box body, the plurality of battery cells are electrically connected through a busbar component, so that the plurality of battery cells are connected in at least one of series and parallel to form an integral whole contained in the box body, thereby being able to improve the capacity and power of the battery. However, the battery cells in the battery will generate a large amount of heat during continuous charging and discharging use. In the related art, in order to reduce the safety hazard caused by internal temperature rise of the battery during use, a thermal management component for heat exchange with the battery cells is usually arranged in the box body to adjust the temperature of the battery cells, thereby relieving the phenomenon of temperature rise inside the battery. However, the connection position of the joint of the thermal management component of the battery and the pipeline conveying the heat exchange medium in the related art is extremely prone to the phenomenon of leakage of the heat exchange medium during use, and the leaked heat exchange medium will contact the plurality of battery cells or other components in the box body, thereby easily causing the risk of short circuit between the plurality of battery cells, resulting in low use reliability of the battery.

[0106] In view of the above, in order to solve the problem of low reliability of the battery in use, the application provides a battery, which comprises a box body and a battery cell. The box body is internally formed with an assembly cavity. The battery cell is accommodated in the assembly cavity. The box body has a first wall, the first wall comprises a heat management component for managing the temperature of the battery cell, the heat management component is internally formed with a flow channel for accommodating a heat exchange medium, and the heat management component is provided with a joint in communication with the flow channel and located outside the assembly cavity.

[0107] In the battery with the above structure, the first wall of the box body comprises the heat management component, the heat management component is internally formed with the flow channel for accommodating the heat exchange medium, so that the heat management component is integrated on the box body, and the heat management component is part of the first wall of the box body, so that heat exchange between the heat management component and the battery cell accommodated in the assembly cavity can be achieved through the heat management component, so that the temperature of the battery cell can be managed, and the box body can be simplified and lightened, thereby reducing the risk of temperature rise of the battery during use and reducing the weight of the battery. Wherein, the joint in communication with the flow channel is arranged outside the assembly cavity of the box body, so that the connection position of the joint and the flow channel and the connection position of the joint and other components are all located outside the assembly cavity. The battery with the above structure can facilitate the connection and assembly of the joint and other components, reduce the assembly difficulty of the battery, reduce the difficulty of subsequent maintenance of the joint, reduce the maintenance cost of the battery in the later period, expand the available space inside the box body, improve the utilization rate of the internal space of the box body, and alleviate the phenomenon of the heat exchange medium entering the assembly cavity when the connection position of the joint and the flow channel and the connection position of the joint and other components leak, thereby reducing the risk of short circuit of the battery during use and improving the reliability of the battery in use.

[0108] The battery disclosed in the application can be used in an electric device such as a vehicle, a ship or an aircraft, but is not limited thereto. A power supply system of the electric device can be composed of the battery disclosed in the application, so that the problem of short circuit of the battery during use can be alleviated, and the reliability of the battery in use can be improved.

[0109] The application provides an electric device using the battery as a power supply. The electric device can be, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0110] The following embodiments are described with reference to a vehicle as an example of an electric device of an embodiment of the application for convenience of description.

[0111] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 provided by some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle, etc. The vehicle 1000 is internally provided with a battery 100, which can be arranged 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 can be used to supply power for the vehicle 1000, for example, the battery 100 can be used as an operating power source or a usage power source of the vehicle 1000, etc. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 is used to control the battery 100 to supply power for the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0112] In some embodiments of the present application, the battery 100 can not only be used as an operating power source or a usage power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0113] According to some embodiments of the present application, referring to FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6, FIG. 2 is an exploded structural view of the battery 100 provided by some embodiments of the present application, FIG. 3 is a structural schematic diagram of a first box body 12 of a box body 10 provided by some embodiments of the present application, FIG. 4 is an exploded structural view of the first box body 12 of the box body 10 provided by some embodiments of the present application, FIG. 5 is a partial sectional view of the battery 100 provided by some embodiments of the present application, and FIG. 6 is a partial enlarged view of A of the battery 100 shown in FIG. 5. The present application provides a battery 100, which includes a box body 10 and a battery cell 20. The box body 10 is internally formed with an assembly cavity 11. The battery cell 20 is accommodated in the assembly cavity 11. The box body 10 has a first wall 121, which includes a thermal management component 1211 for managing the temperature of the battery cell 20. The thermal management component 1211 is internally formed with a flow channel 1211a for accommodating a heat exchange medium. The thermal management component 1211 is provided with a joint 1211b, which is in communication with the flow channel 1211a and located outside the assembly cavity 11.

[0114] The box body 10 is used to provide the assembly cavity 11 for the battery cell 20, and the box body 10 can adopt various structures. In some embodiments, referring to FIG. 2, the box body 10 can include a first box body 12 and a second box body 13, the first box body 12 and the second box body 13 are mutually overlapped, and the first box body 12 and the second box body 13 jointly define the assembly cavity 11 for accommodating the battery cell 20.

[0115] Optionally, the first box body 12 and the second box body 13 can have various structures. For example, as shown in FIG. 2, the first box body 12 and the second box body 13 are both in a "U" shape, such that the first box body 12 and the second box body 13 can jointly define the assembly cavity 11 when they are overlapped with each other. Of course, in other embodiments, the first box body 12 can be a hollow structure with one end open, and the second box body 13 can be a plate structure, which is overlapped with the open end of the first box body 12 to jointly define the assembly cavity 11. Alternatively, the first box body 12 and the second box body 13 can both be hollow structures with one side open, and the open side of the first box body 12 is overlapped with the open side of the second box body 13.

[0116] Of course, the box body 10 formed by the first box body 12 and the second box body 13 can have various shapes, such as a cylinder, a cuboid, a square, etc. For example, as shown in FIG. 2, the box body 10 formed by the first box body 12 and the second box body 13 is in a cuboid shape.

[0117] In the battery 100, the battery cell 20 arranged in the box body 10 can be one or multiple. When the battery cell 20 arranged in the box body 10 is multiple, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. The mixed connection means that the multiple battery cells 20 are connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole of the multiple battery cells 20 is accommodated in the box body 10. Of course, the battery 100 can also be that the multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, which is accommodated in the box body 10.

[0118] In some embodiments, the battery 100 can further include other structures, for example, the battery 100 can further include a current collecting component for connecting the multiple battery cells 20 to realize the electrical connection between the multiple battery cells 20.

[0119] Each battery cell 20 can be a secondary battery or a primary battery, and can 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 can have various shapes, such as a cuboid, a cylinder, a prism, or other shapes. For example, as shown in FIG. 2, the battery cell 20 is in a cuboid shape.

[0120] The box body 10 has a first wall 121, the first wall 121 comprising a heat management component 1211 for managing the temperature of the battery monomer 20, that is, the heat management component 1211 is part of the first wall 121 of the box body 10, and the heat management component 1211 is used for heat exchange with the battery monomer 20 to manage the temperature of the battery monomer 20, that is, the heat management component 1211 is integrated on the box body 10, so that the heat management component 1211 is part of the box body 10, so that the heat management component 1211 and other parts of the box body 10 together define an assembly cavity 11 for accommodating the battery monomer 20, and the surface of the heat management component 1211 facing the assembly cavity 11 is part of the cavity wall surface of the assembly cavity 11.

[0121] The heat management component 1211 is internally formed with a flow channel 1211a for accommodating a heat exchange medium, that is, the heat management component 1211 is internally formed with a flow channel 1211a for the heat exchange medium to flow, so that the heat management component 1211 can exchange heat with the battery monomer 20 accommodated in the assembly cavity 11, thereby achieving the management of the temperature of the battery monomer 20.

[0122] Optionally, the heat exchange medium can be various substances, for example, the heat exchange medium can be a gas, such as air or hydrogen, etc., and the heat exchange medium can also be a liquid, such as water, a salt solution or liquid nitrogen, etc.

[0123] Optionally, in the thickness direction X of the heat management component, the thickness of the region of the heat management component 1211 where the flow channel 1211a is not formed is greater than or equal to 1 mm and less than or equal to 3 mm.

[0124] For example, referring to FIGS. 2 and 3, the first wall 121 is the bottom wall of the box body 10, and the first wall 121 is configured to support the battery monomer 20 in the thickness direction X of the heat management component, that is, the thickness direction X of the heat management component is the direction of gravity or approximately the direction of gravity, and the first wall 121 is located below the battery monomer 20. Of course, in other embodiments, the first wall 121 can also be a side wall or a top wall of the box body 10, etc.

[0125] The joint 1211b is in communication with 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 thermal management component 1211 located outside the assembly cavity 11, and the joint 1211b is in communication with the flow channel 1211a inside the thermal 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 thermal management component 1211 or the heat exchange medium in the flow channel 1211a of the thermal management component 1211 can flow out through the joint 1211b. For example, in FIGS. 3 and 4, the battery 100 further includes an adapter pipe 30, one end of the adapter pipe 30 is connected with the joint 1211b, and the other end of the adapter pipe 30 is in communication with a conveying pipe for conveying the heat exchange medium.

[0126] Optionally, the structure for connecting the joint 1211b to the thermal management component 1211 can be various, for example, the joint 1211b can be connected to the thermal management component 1211 by welding connection, adhesive bonding or clamping, etc.

[0127] In the embodiment of the present application, two joints 1211b are arranged on the thermal management component 1211, and the two joints 1211b are respectively in communication with two ends of the flow channel 1211a. Correspondingly, the battery 100 includes two adapter pipes 30, each adapter pipe 30 is in communication with one joint 1211b, one adapter pipe 30 is used for inputting the heat exchange medium into the flow channel 1211a, and the other adapter pipe 30 is used for outputting the heat exchange medium in the flow channel 1211a, so that the heat exchange medium forms a circulation in the flow channel 1211a of the thermal management component 1211.

[0128] In the embodiment, the first wall 121 of the box body 10 comprises a heat management component 1211, and an internal flow channel 1211a for accommodating a heat exchange medium is formed in the heat management component 1211, so that the heat management component 1211 is integrated on the box body 10, and the heat management component 1211 is part of the first wall 121 of the box body 10, so that heat exchange with the battery monomer 20 accommodated in the assembly cavity 11 can be achieved through the heat management component 1211, so that the temperature of the battery monomer 20 can be managed while the box body 10 is simplified and lightened, thereby reducing the risk of temperature rise of the battery 100 during use and reducing the weight of the battery 100. The joint 1211b in communication with the flow channel 1211a is arranged outside the assembly cavity 11 of the box body 10, so that the joint 1211b and the connection position of the flow channel and the connection position of the joint 1211b and other components are all located outside the assembly cavity 11. The battery 100 with such a structure can facilitate the joint 1211b and other components to be connected and assembled, thereby reducing the assembly difficulty of the battery 100 and reducing the difficulty of subsequent maintenance of the joint 1211b, thereby reducing the maintenance cost of the battery 100 in the later period. On the other hand, the available space inside the box body 10 can be expanded, which is beneficial to improve the utilization rate of the internal space of the box body 10, and when the joint 1211b and the connection position of the flow channel and the connection position of the joint 1211b and other components leak, the phenomenon of the heat exchange medium entering the assembly cavity 11 can be alleviated, thereby reducing the short circuit risk of the battery 100 during use and improving the use reliability of the battery 100.

[0129] According to some embodiments of the present application, as shown in FIGS. 4 and 6, along the thickness direction X of the heat management component, the heat management component 1211 has oppositely arranged first and second surfaces 1211c and 1211d, the first surface 1211c forms part of the cavity wall surface of the assembly cavity 11, and the joint 1211b is connected to the second surface 1211d.

[0130] Among them, the first surface 1211c and the second surface 1211d are respectively the surfaces of the heat management component 1211 located on both sides in the thickness direction X of the heat management component, the first surface 1211c forms part of the cavity wall surface of the assembly cavity 11, that is, the surface of the side of the heat management component 1211 facing the assembly cavity 11 is the first surface 1211c, so that the first surface 1211c constitutes part of the cavity wall surface of the assembly cavity 11. Correspondingly, the second surface 1211d is the surface of the side of the heat management component 1211 away from the assembly cavity 11 in the thickness direction X of the heat management component.

[0131] 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, the joint 1211b can also be connected to the outer circumferential surface of the thermal management component 1211 around the outside of the first surface 1211c under the condition that the thickness of the thermal management component 1211 meets.

[0132] In this embodiment, by connecting the joint 1211b to the second surface 1211d of the thermal management component 1211 away from the assembly cavity 11, the joint 1211b is located on the side of the thermal management component 1211 away from the assembly cavity 11. The battery 100 with this structure can facilitate the assembly of the joint 1211b and other components on the one hand, which is conducive to reducing the assembly difficulty of the battery 100, and the thickness of the thermal management component 1211 will not be affected by the connection position of the joint 1211b, thereby facilitating the further optimization of the thickness of the thermal management component 1211 to improve the space utilization of the battery 100. On the other hand, the joint 1211b and the assembly cavity 11 can be located on the two sides of the thermal management component 1211 respectively, so as to further alleviate the phenomenon of the heat exchange medium entering the assembly cavity 11 when the joint 1211b and the connection position of the flow and the connection position of the joint 1211b and other components leak, so as to further reduce the short circuit risk of the battery 100 during use, and improve the use reliability of the battery 100.

[0133] According to some embodiments of the present application, referring to FIG. 3, FIG. 4, FIG. 5 and FIG. 6, and further referring to FIG. 7, which is a partial enlarged view of B of the battery 100 shown in FIG. 5. The first wall 121 can further include a mounting bracket 1212 provided with a mounting hole 1212a penetrating the mounting bracket 1212 in the thickness direction X of the thermal management component. The thermal management component 1211 is arranged in the mounting hole 1212a and connected to the mounting bracket 1212.

[0134] The mounting bracket 1212 provides mounting and support for the thermal management component 1211, and the mounting bracket 1212 is provided with a mounting hole 1212a penetrating the mounting bracket 1212 in the thickness direction X of the thermal management component, that is, the mounting hole 1212a extends in the thickness direction X of the thermal management component, and the two ends of the mounting hole 1212a penetrate the surfaces on both sides of the mounting bracket 1212.

[0135] The heat management component 1211 is arranged in the mounting hole 1212a of the mounting frame 1212 and connected to the mounting frame 1212. That is, the mounting frame 1212 is a structure surrounding the outside of the heat management component 1211, and the mounting frame 1212 and the heat management component 1211 are connected to each other, so that the heat management component 1211 can block the mounting hole 1212a, so that the heat management component 1211 and the mounting frame 1212 together form the first wall 121 of the cabinet 10.

[0136] Optionally, the connection structure between the heat management component 1211 and the mounting frame 1212 can be various, for example, the heat management component 1211 can be connected to the mounting frame 1212 by welding connection, bonding, clamping or bolt connection and the like.

[0137] In this embodiment, the first wall 121 is also provided with the mounting frame 1212 for mounting the heat management component 1211, so as to facilitate the assembly and fastening of the heat management component 1211. By arranging the heat 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 firmness and stability of the heat management component 1211 assembled on the mounting frame 1212 can be further improved, and the assembly difficulty between the heat management component 1211 and the mounting frame 1212 can be reduced, on the other hand, the mounting frame 1212 can also protect the heat management component 1211 to some extent, so as to reduce the risk of wear and tear or collision of the heat management component 1211, and improve the service life of the heat management component 1211.

[0138] According to some embodiments of the present application, referring to FIGS. 3, 5 and 6, the cabinet 10 can also include a second wall 122 connected to the mounting frame 1212, and the second wall 122 is arranged in the thickness direction Y of the second wall and spaced apart from the heat management component 1211, and the thickness direction Y of the second wall is perpendicular to the thickness direction X of the heat management component.

[0139] Among them, the second wall 122 and the heat management component 1211 are structures connected to the mounting frame 1212, so that the mounting frame 1212 can provide installation and support for the heat management component 1211 and the second wall 122.

[0140] For example, the second wall 122 is connected to one side of the mounting frame 1212 in the thickness direction X of the heat management component. In FIGS. 3 and 5, the first cabinet body 12 includes two second walls 122, both of which are connected to one side of the mounting frame 1212 in the thickness direction X of the heat management component, and the two second walls 122 are oppositely arranged in the thickness direction Y of the second wall and located on both sides of the heat management component 1211, respectively. The surfaces of the two second walls 122 facing each other form part of the cavity wall surface of the assembly cavity 11.

[0141] Optionally, the connecting structure between the second wall 122 and the mounting frame 1212 can be various, for example, the second wall 122 can be connected to the mounting frame 1212 by welding connection, bonding, clamping or bolted connection, etc.

[0142] In the thickness direction Y of the second wall, the second wall 122 is spaced apart from the thermal management component 1211, that is, the second wall 122 and the thermal management component 1211 have a distance in the thickness direction Y of the second wall and are not in contact. Correspondingly, in the embodiment in which the first box body 12 includes two second walls 122, the thermal management component 1211 is located between the two second walls 122 in the thickness direction Y of the second wall, and the thermal management component 1211 is spaced apart from the two second walls 122.

[0143] It should be noted that, in the embodiment in which the box body 10 includes the first box body 12 and the second box body 13, the second wall 122 is part of the first box body 12, that is, the first box body 12 includes the first wall 121 and the second wall 122.

[0144] In the present embodiment, by connecting the second wall 122 of the box body 10 to the mounting frame 1212 of the first wall 121 and spacing apart from the thermal management component 1211, the second wall 122 and the thermal management component 1211 are connected and assembled with each other through the mounting frame 1212, so that the weight of the second wall 122 itself or the impact force received by the second wall 122 cannot directly act on the thermal management component 1211, thereby reducing the load received by the thermal management component 1211, reducing the risk of damage to the thermal management component 1211, and reducing the assembly difficulty between the second wall 122 and the first wall 121.

[0145] According to some embodiments of the present application, as shown in FIGS. 5, 6 and 7, the side of the mounting frame 1212 facing the assembly cavity 11 is connected to a limiting piece 40. The limiting piece 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 piece 40 is configured to abut against the battery monomer 20 in the thickness direction Y of the second wall.

[0146] Wherein, the side of the mounting frame 1212 facing the assembly cavity 11 is connected to a limiting piece 40, that is, the limiting piece 40 is connected to the fourth surface 1212d of the side of the mounting frame 1212 facing the assembly cavity 11.

[0147] 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 and the thermal management component 1211 are arranged in the thickness direction Y of the second wall, and the limiting member 40 and the thermal management component 1211 are not in contact with each other, and the limiting member 40 and the second wall 122 are arranged in the thickness direction Y of the second wall, and the limiting member 40 and the second wall 122 are not in contact with each other.

[0148] The limiting member 40 is configured to abut the battery monomer 20 in the thickness direction Y of the second wall, that is, the limiting member 40 is located on one side of the battery monomer 20 in the thickness direction Y of the second wall, and abuts the battery monomer 20. It should be noted that in the embodiment in which the battery 100 includes a plurality of battery monomers 20 arranged in the thickness direction Y of the second wall, the limiting member 40 is located on at least one side of the plurality of battery monomers 20 in the thickness direction Y of the second wall, and the limiting member 40 is configured to abut the plurality of battery monomers 20 in the thickness direction Y of the second wall.

[0149] Optionally, the number of limiting members 40 connected to the side of the mounting frame 1212 facing the assembly cavity 11 can be one or more, and in the embodiment of the present application, two limiting members 40 are connected to the side of the mounting frame 1212 facing the assembly cavity 11, and the thermal management component 1211 is provided with a limiting member 40 between the two second walls 122 in the thickness direction Y of the second wall, that is, the two limiting members 40 are arranged in the thickness direction Y of the second wall, and the two limiting members 40 are located on both sides of the thermal management component 1211 in the thickness direction Y of the second wall, and the plurality of battery monomers 20 are arranged between the two limiting members 40 in the thickness direction Y of the second wall.

[0150] In some embodiments, referring to FIGS. 6 and 7, the limiting member 40 can include a first limiting portion 41 and a second limiting portion 42, the first limiting portion 41 and the second limiting portion 42 are arranged in the thickness direction X of the thermal management component and are connected to each other, and the second limiting portion 42 is connected to the fourth surface 1212d of the side of the mounting frame 1212 facing the assembly cavity 11.

[0151] The connecting structure between the first limiting part 41 and the second limiting part 42 can be various, such as bolted connection, welding connection or clamping, etc. Similarly, the connecting structure between the second limiting part 42 and the mounting frame 1212 can also be various, and in FIG. 7, the second limiting part 42 is integrally formed with the mounting frame 1212, that is, the second limiting part 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 limiting part 42 and the mounting frame 1212 can also be a split structure, and correspondingly, the second limiting part 42 can be connected to the mounting frame 1212 by bolted connection, welding connection or clamping, etc. It should be noted that in the embodiment in which the battery 100 includes a battery module, the battery module includes a plurality of battery monomers 20, and correspondingly, the first limiting part 41 can be an end plate of the battery module.

[0152] Optionally, the projection of the battery monomer 20 in the thickness direction Y of the second wall is located in the limiting piece 40.

[0153] For example, the first limiting part 41 is a plate-shaped structure extending in the third direction Z, and the second limiting part 42 is a strip-shaped structure extending in the third direction Z, and the third direction Z is perpendicular to the thickness direction X of the heat management component and the thickness direction Y of the second wall.

[0154] It should be noted that the structure of the limiting piece 40 is not limited to this, and in other embodiments, the limiting piece 40 can also be other structures, such as the limiting piece 40 can be a whole plate-shaped structure, that is, the first limiting part 41 and the second limiting part 42 of the limiting piece 40 are an integral structure, and in this embodiment, the limiting piece 40 and the mounting frame 1212 can be an integral forming structure or a split structure.

[0155] In this embodiment, by connecting the limiting piece 40 on the side of the mounting frame 1212 facing the assembly cavity 11, and the limiting piece 40 can abut against the battery monomer 20 in the thickness direction Y of the second wall, thereby being able to limit the battery monomer 20 accommodated in the assembly cavity 11 to a certain extent, on the one hand, it can alleviate the phenomenon of shaking or displacement of the battery monomer 20 during use, on the other hand, it can reduce the collision phenomenon between the battery monomer 20 and the second wall 122. In addition, by arranging the limiting piece 40 between the second wall 122 and the heat management component 1211 in the thickness direction Y of the second wall, the space between the second wall 122 and the heat management component 1211 can be utilized, which is beneficial to improve the internal space utilization rate of the battery 100, and can reduce the phenomenon that the stress received by the limiting piece 40 is transmitted to the heat management component 1211.

[0156] According to some embodiments of the present application, referring to FIGS. 6 and 7, the battery 100 can further include an insulating piece 50 disposed between the limiting piece 40 and the battery cell 20 along the thickness direction Y of the second wall.

[0157] The insulating piece 50 can be made of various materials, such as rubber, silicone, or plastic.

[0158] For example, the insulating piece 50 is an insulating gasket disposed between the battery cell 20 and the limiting piece 40. It should be noted that in embodiments in which the limiting piece 40 is disposed on both sides of the battery cell 20 along the thickness direction Y of the second wall, the battery 100 can include two insulating pieces 50, one disposed between each limiting piece 40 and the battery cell 20.

[0159] In the present embodiment, by disposing the insulating piece 50 between the limiting piece 40 and the battery cell 20, on the one hand, the insulating piece 50 can improve the insulation between the limiting piece 40 and the battery cell 20, thereby reducing the risk of short circuit between the limiting piece 40 and the battery cell 20, and on the other hand, the insulating piece 50 can also serve as a buffer between the limiting piece 40 and the battery cell 20.

[0160] In some embodiments, referring to FIGS. 6 and 7, along the thickness direction X of the thermal management component 1211, the battery cell 20 is disposed corresponding to the thermal management component 1211, and the projection of the insulating piece 50 does not overlap the projection of the thermal management component 1211.

[0161] In other words, the battery cell 20 is assembled in the region of the thermal management component 1211 within the box 10, 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 within the thermal management component 1211. If the thermal management component 1211 is located at the bottom of the battery cell 20, the battery cell 20 is placed on the thermal management component 1211.

[0162] In other words, the battery cell 20 is assembled in the region of the thermal management component 1211 within the box 10, 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 within the thermal management component 1211. If the thermal management component 1211 is located at the bottom of the battery cell 20, the battery cell 20 is placed on the thermal management component 1211.

[0163] In the present embodiment, by arranging the battery cell 20 corresponding to the battery cell 20 in the thickness direction X of the thermal management component, the heat exchange effect between the thermal management component 1211 and the battery cell 20 is improved, so that the effect of the thermal management component 1211 on managing the temperature of the battery cell 20 can be improved. In addition, by arranging the projection of the insulating member 50 in the thickness direction X of the thermal management component not to 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 beneficial to improving the energy density of the battery 100.

[0164] In some embodiments, referring to FIGS. 6 and 7, a spacing space 14 is formed between the limiting member 40 and the second wall 122 in the thickness direction Y of the second wall. That is, the limiting member 40 and the second wall 122 are arranged in the thickness direction Y of the second wall, so that the space between the limiting member 40 and the second wall 122 is the spacing space 14.

[0165] For example, the spacing space 14 formed between the limiting member 40 and the second wall 122 can be used to accommodate the wiring harness, battery management system and other components of the battery 100.

[0166] In the present embodiment, in the thickness direction Y of the second wall, the spacing space 14 is formed between the limiting member 40 and the second wall 122, so that the limiting member 40 and the second wall 122 are arranged 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 limiting member 40, so that when the second wall 122 is subjected to external impact, the phenomenon that the second wall 122 directly transmits the impact force to the limiting 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 limiting member 40 and the second wall 122, which is beneficial to improving the internal space utilization of the battery 100.

[0167] According to some embodiments of the present application, referring to FIGS. 3, 4, 5 and 6, the battery 100 can further include an adapter pipe 30 for conveying heat exchange medium, the adapter pipe 30 being arranged on the mounting bracket 1212. The adapter pipe 30 has opposite first and second ends 31 and 32, the first end 31 being in abutment with the connector 1211b, and the second end 32 being 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 second end 32 being configured to communicate with an external component.

[0168] The external component is a delivery pipe for providing or recovering the heat exchange medium. The second end 32 of the adapter pipe 30 is in communication with the delivery pipe, so that the adapter pipe 30 can allow the heat exchange medium to enter the flow channel 1211a or allow the heat exchange medium in the flow channel 1211a to flow out.

[0169] In the embodiment in which the two joints 1211b are respectively in communication with the two ends of the flow channel 1211a, the battery 100 includes two adapter pipes 30, the two adapter pipes 30 are respectively connected to the two joints 1211b, and the two adapter pipes 30 are respectively in communication with two delivery pipes.

[0170] The adapter pipe 30 has opposite first and second ends 31 and 32. The first end 31 is connected to the joint 1211b, that is, the two ends of the adapter pipe 30 in the extension direction thereof are respectively the first and second ends 31 and 32, and the first end 31 is in communication with the joint 1211b.

[0171] 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, that is, one end of the adapter pipe 30 away from the joint 1211b in the extension direction thereof extends to the side of the second wall 122 away from the heat management component 1211 in the thickness direction Y of the second wall.

[0172] In the embodiment, the battery 100 is further provided with the adapter pipe 30. The adapter pipe 30 is arranged on the mounting bracket 1212. By connecting the first end 31 of the adapter pipe 30 to the joint 1211b, the adapter pipe 30 is in communication with the flow channel 1211a inside the heat management component 1211 through the joint 1211b, so that the adapter pipe 30 can input the heat exchange medium into the flow channel 1211a or allow the heat exchange medium in the flow channel 1211a to flow out. By arranging the second end 32 of the adapter pipe 30 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 connection position of the adapter pipe 30 and the joint 1211b and the connection position of the adapter pipe 30 and the external component are separated from each other. On the one hand, this can further reduce the risk of the heat exchange medium leaking into the assembly cavity 11. On the other hand, this facilitates the assembly and connection of the adapter pipe 30 and the external component, and is conducive to reducing the assembly difficulty between the adapter pipe 30 and the external component.

[0173] According to some embodiments of the present application, as shown in FIGS. 4, 5 and 6, the mounting bracket 1212 is provided with a mounting channel 1212b extending to the hole wall surface of the mounting hole 1212a, and at least part of the adapter pipe 30 is arranged in the mounting channel 1212b.

[0174] The mounting channel 1212b is used for inserting the adapter pipe 30 to assemble and fix the adapter pipe 30. In the embodiment in which the battery 100 includes two adapter pipes 30, two mounting channels 1212b are arranged on the mounting rack 1212, and each mounting channel 1212b is used for inserting one adapter pipe 30. In some embodiments, as shown in FIG. 4, the two mounting channels 1212b are arranged along the third direction Z, and both of the two mounting channels 1212b extend along the thickness direction Y of the second wall. For example, 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.

[0175] The mounting channel 1212b extends to the hole wall surface of the mounting hole 1212a, that is, one end of the mounting channel 1212b penetrates the hole wall surface of the mounting hole 1212a, so that the mounting channel 1212b communicates with the mounting hole 1212a, and the first end 31 of the adapter pipe 30 can extend into the mounting hole 1212a and abut against the joint 1211b.

[0176] In the embodiment, by arranging the mounting channel 1212b on the mounting rack 1212, the mounting channel 1212b penetrates the hole wall surface of the mounting hole 1212a, and at least part of the adapter pipe 30 is arranged in the mounting channel 1212b, so that the adapter pipe 30 can abut against the joint 1211b. The battery 100 with the above structure can realize that part of the adapter pipe 30 is located inside the mounting rack 1212, which can improve the stability and reliability of the adapter pipe 30 mounted on the mounting rack 1212, and the mounting rack 1212 can also protect the adapter pipe 30 to some extent, so as to reduce the risk of wear and tear or collision of the adapter pipe 30, and improve the service life of the adapter pipe 30.

[0177] In some embodiments, as shown in FIG. 4 and FIG. 6, 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 rack 1212. That is, the two ends of the mounting channel 1212b along the thickness direction Y of the second wall penetrate the hole wall surface of the mounting hole 1212a and the outer surface of the mounting rack 1212, respectively.

[0178] In the embodiment, by arranging the mounting channel 1212b to extend along the thickness direction Y of the second wall, and arranging the two ends of the mounting channel 1212b to penetrate the hole wall surface of the mounting hole 1212a and the outer surface of the mounting rack 1212, respectively, the adapter pipe 30 can be assembled with the mounting rack 1212 only by inserting the adapter pipe 30 into the mounting channel 1212b along the thickness direction Y of the second wall, which can reduce the assembly difficulty between the adapter pipe 30 and the mounting rack 1212.

[0179] According to some embodiments of the present application, referring to FIG. 5 and FIG. 6, and further referring to FIG. 8, which is a structural schematic diagram of the heat management component 1211 according to some embodiments of the present application. Along the thickness direction X of the heat management component, the heat management component 1211 has oppositely arranged first surface 1211c and second surface 1211d, the first surface 1211c forms part of the cavity wall surface of the assembly cavity 11, and the joint 1211b is connected to the second surface 1211d, and the projection of the joint 1211b in the thickness direction X of the heat management component is located within the mounting hole 1212a.

[0180] In some embodiments, the heat management component 1211 has oppositely arranged first surface 1211c and second surface 1211d, the first surface 1211c forms part of the cavity wall surface 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 heat management component 1211 away from the assembly cavity 11 in the thickness direction X of the heat management component.

[0181] In some embodiments, the projection of the joint 1211b in the thickness direction X of the heat management component is located within the mounting hole 1212a, that is, in the thickness direction X of the heat management component, the projection of the joint 1211b does not overlap with the projection of the mounting bracket 1212, so that the joint 1211b is not covered by the mounting bracket 1212. It should be noted that since the heat management component 1211 is arranged within the mounting hole 1212a of the mounting bracket 1212, that is, the joint 1211b is at least partially accommodated within the mounting hole 1212a.

[0182] In some embodiments, the joint 1211b is arranged on the side of the heat management component 1211 away from the assembly cavity 11 in the thickness direction X of the heat management component, and the projection of the joint 1211b in the thickness direction X of the heat management component is arranged within the mounting hole 1212a, so that the mounting bracket 1212 avoids the joint 1211b, reduces the interference between the joint 1211b and the mounting bracket 1212, facilitates subsequent maintenance of the joint 1211b, facilitates assembly of the joint 1211b and other components, and is conducive to reducing the assembly difficulty between the joint 1211b and other components.

[0183] In some embodiments, referring to FIG. 6, the mounting bracket 1212 has a third surface 1212c away from the assembly cavity 11 in the thickness direction X of the heat management component, and the mounting hole 1212a extends to the third surface 1212c. In the thickness direction X of the heat 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.

[0184] In some embodiments, the third surface 1212c is the outer surface of the mounting bracket 1212 away from the assembly cavity 11 in the thickness direction X of the heat management component.

[0185] In the direction in which the first surface 1211c points to the second surface 1211d, the joint 1211b does not protrude beyond the third surface 1212c, that is, the joint 1211b is located in the mounting hole 1212a, and the joint 1211b does not protrude out of the third surface 1212c of the mounting rack 1212 in the thickness direction X of the heat management component, that is, the joint 1211b is located in the mounting hole 1212a as a whole.

[0186] In this embodiment, by setting the joint 1211b to not protrude beyond the side of the mounting rack 1212 away from the assembly cavity 11 in the direction in which the first surface 1211c points to the second surface 1211d, the joint 1211b is located in the mounting hole 1212a as a whole, so that the mounting rack 1212 can also play a certain protective role for the joint 1211b, so as to reduce the phenomenon that the joint 1211b is worn or bumped, and thus facilitate to improve the service life of the joint 1211b.

[0187] According to some embodiments of the present application, as shown in FIG. 7, the mounting hole 1212a includes a first hole section 1212e and a second hole section 1212f arranged in the thickness direction X of the heat management component, the first hole section 1212e is located on the side of the second hole section 1212f close to the assembly cavity 11, the hole wall surface of the first hole section 1212e and the hole wall surface of the second hole section 1212f are connected by a step surface 1212g, the step surface 1212g is arranged to face the assembly cavity 11, the heat management component 1211 is located in the first hole section 1212e, and the heat management component 1211 abuts against the step surface 1212g.

[0188] The mounting hole 1212a includes a first hole section 1212e and a second hole section 1212f arranged in the thickness direction X of the heat management component, the first hole section 1212e is located on the side of the second hole section 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 sections, which are the first hole section 1212e and the second hole section 1212f, and the first hole section 1212e is closer to the assembly cavity 11 in the thickness direction X of the heat management component than the second hole section 1212f.

[0189] The hole wall surface of the first hole section 1212e and the hole wall surface of the second hole section 1212f are connected by a step surface 1212g, the step surface 1212g is arranged to face the assembly cavity 11, that is, the projection of the hole wall surface of the second hole section 1212f in the thickness direction X of the heat management component is located in the first hole section 1212e, so as to form the step surface 1212g arranged to face the assembly cavity 11 between the hole wall surface of the first hole section 1212e and the hole wall surface of the second hole section 1212f.

[0190] Exemplarily, in FIG. 7, the mounting hole 1212a only includes the first hole section 1212e and the second hole section 1212f connected with each other, that is, the mounting hole 1212a of the stepped hole structure is only provided with two hole sections, and the two hole sections are the first hole section 1212e and the second hole section 1212f respectively. Of course, in other embodiments, the number of hole sections of the mounting hole 1212a of the stepped hole structure can also be three, four, five or six, etc., for example, in some embodiments, the mounting hole 1212a can also include other hole sections located on the side of the first hole section 1212e away from the second hole section 1212f or other hole sections located on the side of the second hole section 1212f away from the first hole section 1212e.

[0191] It should be noted that in the embodiment in which the joint 1211b is arranged on the second surface 1211d of the heat management component 1211 and the joint 1211b is located in the mounting hole 1212a as a whole, the joint 1211b is a structure located in the second hole section 1212f.

[0192] In the present embodiment, the mounting hole 1212a has the first hole section 1212e and the second hole section 1212f arranged along the thickness direction X of the heat management component, the hole wall surface of the first hole section 1212e and the hole wall surface of the second hole section 1212f are connected by the stepped surface 1212g, and the stepped surface 1212g is arranged to face the assembly cavity 11 in the thickness direction X of the heat management component, wherein by arranging the heat management component 1211 in the first hole section 1212e and abutting on the stepped surface 1212g, on the one hand, it is convenient to install the heat management component 1211 in the mounting hole 1212a of the mounting rack 1212, which is conducive to reducing the assembly difficulty between the heat management component 1211 and the mounting rack 1212, and on the other hand, the stepped surface 1212g can also play a certain limiting and positioning role on the heat management component 1211 in the thickness direction X of the heat management component, which is conducive to improving the stability and reliability of the heat management component 1211 installed on the mounting rack 1212.

[0193] According to some embodiments of the present application, please refer to FIG. 7, the mounting rack 1212 has the third surface 1212c facing away from the assembly cavity 11 and the fourth surface 1212d facing the assembly cavity 11 in the thickness direction X of the heat 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 heat management component, in the direction from the third surface 1212c to the fourth surface 1212d, the heat management component 1211 does not exceed the fourth surface 1212d.

[0194] The third surface 1212c is an outer surface of the mounting bracket 1212 on a side of the heat management component 1211 facing away from the assembly cavity 11, and the fourth surface 1212d is a fourth surface of the mounting bracket 1212 on a side of the heat management component 1211 facing the assembly cavity 11, such that the fourth surface 1212d forms part of a cavity wall surface of the assembly cavity 11.

[0195] The first hole section 1212e extends to the fourth surface 1212d, and the second hole section 1212f extends to the third surface 1212c, that is, the mounting hole 1212a only includes the first hole section 1212e and the second hole section 1212f, and the two ends of the mounting hole 1212a in the thickness direction X of the heat management component respectively pass through the third surface 1212c and the fourth surface 1212d.

[0196] In the thickness direction X of the heat management component, in the direction from the third surface 1212c to the fourth surface 1212d, the heat management component 1211 does not protrude beyond the fourth surface 1212d, that is, the heat management component 1211 does not protrude beyond the fourth surface 1212d of the mounting bracket 1212 facing the assembly cavity 11, such that the heat management component 1211 as a whole is located within the first hole section 1212e.

[0197] In the present embodiment, by setting the heat management component 1211 to not protrude beyond the side of the mounting bracket 1212 facing the assembly cavity 11 in the direction from the third surface 1212c to the fourth surface 1212d, that is, the heat management component 1211 does not protrude beyond the end of the mounting hole 1212a in the thickness direction X of the heat management component, which passes through the fourth surface 1212d, the phenomenon of the heat management component 1211 protruding beyond the fourth surface 1212d of the mounting bracket 1212 can be alleviated, and the protective effect of the mounting bracket 1212 on the heat management component 1211 can be improved.

[0198] In some embodiments, please continue to refer to FIG. 7, in the thickness direction X of the heat management component, the heat management component 1211 has a first surface 1211c facing the assembly cavity 11, and the first surface 1211c is flush with the fourth surface 1212d.

[0199] The first surface 1211c is flush with the fourth surface 1212d, that is, the surface of the heat management component 1211 facing the assembly cavity 11 is coplanar with the surface of the mounting bracket 1212 facing the assembly cavity 11, that is, the first surface 1211c is coplanar with the fourth surface 1212d.

[0200] In the embodiment, by setting the first surface 1211c of the heat 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 phenomenon of unevenness of the cavity wall surface of the assembly cavity 11, which is beneficial to reduce the risk of collision between the battery monomer 20 and the sharp part of the mounting frame 1212 or the sharp part of the heat management component 1211.

[0201] According to some embodiments of the present application, referring to FIGS. 4 and 5, the box 10 can further include a support 123 disposed in the mounting hole 1212a and connected to the hole wall surface of the mounting hole 1212a. Along the thickness direction X of the heat management component, the support 123 is located on the side of the heat management component 1211 away from the assembly cavity 11 and abuts against the heat management component 1211, and the projection of the support 123 and the joint 1211b in the thickness direction X of the heat management component does not overlap.

[0202] The support 123 is located on the side of the heat management component 1211 away from the assembly cavity 11 and abuts against the heat management component 1211, that is, the heat management component 1211 is located on the side of the support 123 facing the assembly cavity 11, and the heat management component 1211 and the support 123 abut against each other along the thickness direction X of the heat management component.

[0203] The projection of the support 123 and the joint 1211b in the thickness direction X of the heat management component does not overlap, that is, the support 123 does not cover the joint 1211b in the thickness direction X of the heat management component, that is, the support 123 divides the mounting hole 1212a into multiple chambers, and the joint 1211b is located in the chamber, so that the joint 1211b and the support 123 do not overlap in the thickness direction X of the heat management component.

[0204] Optionally, the structure and shape of the support 123 can be various, and exemplarily, in FIG. 4, the support 123 is a plate structure extending in the third direction Z, and both ends of the support 123 in the third direction Z are connected to the hole wall surface of the mounting hole 1212a.

[0205] Optionally, the number of supports 123 disposed in the mounting hole 1212a can be one or multiple, and exemplarily, in FIG. 4, only one support 123 is disposed in the mounting hole 1212a, of course, in other embodiments, the support 123 disposed in the mounting hole 1212a can also be two, three, four or five, etc. It should be noted that in the embodiment in which the number of supports 123 disposed in the mounting hole 1212a is multiple, the multiple supports 123 can be a structure intersecting and connected with each other, or the multiple supports 123 can be a structure arranged at intervals along the thickness direction Y of the second wall or along the third direction Z.

[0206] In the embodiment, by arranging the support 123 in the mounting hole 1212a, the support 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 1211 and abuts against the thermal management component 1211, so that the thermal management component 1211 can also be supported by the support 123 to some extent, which is conducive to reducing the risk of deformation of the thermal management component 1211 during use, and the thermal management component 1211 can also be protected by the support 123 to some extent, which is conducive to alleviating the phenomenon of direct collision between the thermal management component 1211 and the external environment. In addition, by arranging the projection of the support 123 and the joint 1211b in the thickness direction X of the thermal management component to be mutually non-overlapping, the interference between the support 123 and the joint 1211b can also be reduced.

[0207] 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 bolted connection, clamped connection or adhesive connection.

[0208] In the embodiment, by welding the thermal management component 1211 to the mounting frame 1212, the connection reliability between the thermal management component 1211 and the mounting frame 1212 can be improved, so as to improve the stability and reliability of the thermal management component 1211 assembled on the mounting frame 1212.

[0209] According to some embodiments of the present application, the joint 1211b is welded to the thermal management component 1211. The joint 1211b can also be connected to the thermal management component 1211 by bolted connection, clamped connection or adhesive connection.

[0210] In the embodiment, by welding the joint 1211b to the thermal management component 1211, the connection reliability between the joint 1211b and the thermal management component 1211 can be improved, so as to improve the stability and reliability of the joint 1211b assembled on the thermal management component 1211.

[0211] According to some embodiments of the present application, referring to FIG. 8, and further referring to FIG. 9, FIG. 9 is an exploded view of the structure of the thermal management component 1211 provided by some embodiments of the present application. 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 arranged in layers 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.

[0212] The first plate body 1211e and the second plate body 1211f are connected in the thickness direction X of the thermal management component, and the connection structure of the first plate body 1211e and the second plate body 1211f can be various, such as welding connection or adhesion, etc.

[0213] 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.

[0214] In the embodiment, the thermal management component 1211 is provided with the first plate body 1211e and the second plate body 1211f connected in the thickness direction X of the thermal management component, and the first plate body 1211e and the second plate body 1211f jointly define the flow channel 1211a for accommodating the heat exchange medium, so as to form the flow channel 1211a in the interior of the thermal management component 1211. The thermal management component 1211 with the above structure has simple structure and is convenient for processing and manufacturing.

[0215] According to some embodiments of the present application, please continue to refer to FIGS. 7, 8 and 9, in 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 the side of the second plate body 1211f facing the first plate body 1211e is provided with a groove 1211h, and the groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a.

[0216] 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 slot opening 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 interior of the thermal management component 1211 forms the flow channel 1211a in the area corresponding to the groove 1211h. 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.

[0217] It should be noted that the structure of the heat management component 1211 is not limited to this, and in other embodiments, the heat management component 1211 can also have other structures, for example, the second plate body 1211f can also have a first plane 1211g facing the first plate body 1211e, the side of the first plate body 1211e facing the second plate body 1211f is provided with a groove 1211h, and the groove wall surface of the groove 1211h and the first plane 1211g jointly define the flow channel 1211a, or the side of the first plate body 1211e facing the second plate body 1211f and the side of the second plate body 1211f facing the first plate body 1211e are both provided with the groove 1211h, 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 heat 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.

[0218] In this embodiment, by arranging the groove 1211h on the side of the second plate body 1211f facing the first plate body 1211e, after the first plate body 1211e and the second plate body 1211f are stacked and connected with each other, the first plane 1211g of the first plate body 1211e and the groove wall surface of the groove 1211h of the second plate body 1211f can jointly form the flow channel 1211a of the heat management component 1211, which is simple in structure, easy to implement, and high in processing efficiency.

[0219] In some embodiments, referring to FIG. 9, and further referring to FIG. 10, FIG. 10 is a front view of the heat management component 1211 facing the second plate body 1211f in the first direction according to some embodiments of the present application. Along the thickness direction X of the heat management component, the side of the second plate body 1211f away from the first plate body 1211e and corresponding to the position of the groove 1211h is formed with a protrusion 1211k.

[0220] For example, the groove 1211h arranged on the side of the second plate body 1211f facing the first plate body 1211e is formed by a stamping process, so as to form the groove 1211h on the side of the second plate body 1211f facing the first plate body 1211e, and form the protrusion 1211k 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. Of course, the processing method of the groove 1211h arranged on the side of the second plate body 1211f facing the first plate body 1211e is not limited to this, and in other embodiments, the groove 1211h arranged on the side of the second plate body 1211f facing the first plate body 1211e can also be formed by casting, milling or etching and other processing processes.

[0221] In the embodiment, the protrusion 1211k is formed on the side of the second plate body 1211f away from the first plate body 1211e along the thickness direction X of the thermal management component and corresponding to the position of the groove 1211h, so that the groove 1211h is a structure that can be formed on the second plate body 1211f by a stamping process, thereby facilitating reduction of the difficulty of forming the groove 1211h on the second plate body 1211f and facilitating improvement of the difficulty of processing and forming the groove 1211h on the second plate body 1211f.

[0222] In some embodiments, referring to FIGS. 7 and 9, 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. That is, along the thickness direction X of the thermal management component, the second plate body 1211f and the assembly cavity 11 are respectively located on the two sides of the first plate body 1211e.

[0223] It should be noted that in the embodiment in which the thermal management component 1211 has the first surface 1211c facing the assembly cavity 11, the surface on the side of the first plate body 1211e away from the second plate body 1211f along the thickness direction X of the thermal management component is the first surface 1211c.

[0224] In the embodiment, by setting the second plate body 1211f 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 such a 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, thereby facilitating reduction of the difficulty of assembling the battery cell 20 in the assembly cavity 11.

[0225] According to some embodiments of the present application, referring to FIGS. 2 and 3, 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 are overlapped with each other along the thickness direction X of the thermal management component and jointly define the assembly cavity 11, and the first box body 12 includes a first wall 121.

[0226] The first box body 12 includes the first wall 121, that is, the first wall 121 is a part of the first box body 12.

[0227] In the embodiment, by setting the box body 10 as the first box body 12 and the second box body 13, and setting the first box body 12 and the second box body 13 as structures overlapped with each other along the thickness direction X of the thermal management component and jointly defining the assembly cavity 11, the box body 10 adopting such a structure can reduce the difficulty of assembling the battery cell 20 into the assembly cavity 11 of the box body 10 and reduce the manufacturing difficulty of the box body 10.

[0228] In some embodiments, referring to FIG. 2, FIG. 3 and FIG. 4, and further referring to FIG. 11, which is a schematic view of the structure of the second box body 13 of the box 10 according to some embodiments of the present application. The first box body 12 further comprises two second walls 122, each of which is connected to the first wall 121, and the second box body 13 comprises a third wall 131 and two fourth walls 132, each of which is connected to the third wall 131. The first wall 121 and the third wall 131 are oppositely arranged in a first direction, the two second walls 122 are oppositely arranged in a second direction, and the two fourth walls 132 are oppositely arranged in a third direction Z. The first direction is parallel to the thickness direction X of the heat management component, and the first direction, the second direction and the third direction Z are perpendicular to each other.

[0229] The first direction is parallel to the thickness direction X of the heat 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 oppositely arranged in the thickness direction X of the heat management component, i.e., the heat management component 1211 and the third wall 131 are oppositely arranged in the thickness direction X of the heat management component, and the two second walls 122 are oppositely arranged in the thickness direction Y of the second wall, and the two fourth walls 132 are oppositely arranged in the thickness direction of the fourth wall 132.

[0230] Exemplarily, each of the two second walls 122 is connected to the side of the first wall 121 facing the third wall 131 in the thickness direction X of the heat management component. Similarly, the connection structure between the second wall 122 and the first wall 121 can be various, such as welding connection, clamping or bolted connection, etc.

[0231] Exemplarily, each of the two fourth walls 132 is connected to the side of the third wall 131 facing the first wall 121 in the thickness direction X of the heat management component. The fourth wall 132 and the third wall 131 can be an integrally formed structure, such as the fourth wall 132 and the third wall 131 can be integrally formed by extrusion molding, casting or stamping, etc. Of course, the fourth wall 132 and the third wall 131 can also be a separate structure, such as the fourth wall 132 can be connected to the third wall 131 by welding connection, clamping or bolted connection, etc.

[0232] In the 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 oppositely arranged along the second direction, 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 oppositely arranged along the third direction Z, so that the first box body 12 and the second box body 13 both form a structure similar to "U", thereby on the one hand, the first box body 12 and the second box body 13 can be overlapped along the thickness direction X of the thermal management component to jointly define the assembly cavity 11 for accommodating the battery monomer 20, on the other hand, the manufacturing difficulty of the first box body 12 and the second box body 13 can be reduced, and the subsequent maintenance of the battery monomer 20 accommodated in the box body 10 is facilitated, which is beneficial to reduce the later maintenance difficulty of the battery 100.

[0233] In some embodiments, referring to FIGS. 2, 3 and 11, along the third direction Z, the first wall 121 is located between the two fourth walls 132, and the two sides of the first wall 121 are connected to the two fourth walls 132 respectively.

[0234] In some embodiments, referring to FIGS. 2, 3 and 11, along the third direction Z, the first wall 121 is located between the two fourth walls 132, and the two sides of the first wall 121 are connected to the two fourth walls 132 respectively.

[0235] In some embodiments, referring to FIGS. 2, 3 and 11, along the third direction Z, the first wall 121 is located between the two fourth walls 132, and the two sides of the first wall 121 are connected to the two fourth walls 132 respectively.

[0236] In the embodiment, by setting the first wall 121 as a structure located between the two fourth walls 132 along the third direction Z, and connecting the two sides of the first wall 121 to the fourth walls 132 along the third direction Z, the two fourth walls 132 are structures clamping the first wall 121 along 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 the first wall 121 and the fourth wall 132 are facilitated to be assembled and connected 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 of 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 closing effect between the first wall 121 and the fourth wall 132.

[0237] According to some embodiments of the present application, the present application also provides a power-using device, the power-using device comprising the battery 100 of any of the above solutions, and the battery 100 is used to provide power for the power-using device.

[0238] wherein the power-using device can be the device or system of any of the foregoing applications of the battery 100.

[0239] According to some embodiments of the present application, referring to FIGS. 2-11, the present application provides a battery 100, which comprises a box 10, a battery cell 20, an adapter pipe 30, two limiting members 40 and two insulating members 50. The box 10 has an assembly cavity 11 formed inside, and comprises a first box body 12 and a second box body 13, which are overlapped with each other along a thickness direction X of a thermal management component and jointly define the assembly cavity 11. The first box body 12 further comprises two second walls 122, which are connected to a first wall 121, and the second box body 13 comprises a third wall 131 and two fourth walls 132, which are connected to the third wall 131. The first wall 121 and the third wall 131 are oppositely arranged along the thickness direction X of the thermal management component, the two second walls 122 are oppositely arranged along a thickness direction Y of the second wall, and the two fourth walls 132 are oppositely arranged along a 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 comprises a mounting bracket 1212 and a thermal management component 1211. The mounting bracket 1212 is provided with a mounting hole 1212a, which penetrates through the mounting bracket 1212 along the thickness direction X of the thermal management component, and the thermal management component 1211 is arranged in the mounting hole 1212a and is welded to the mounting bracket 1212. The second wall 122 is connected to the mounting bracket 1212 and is arranged spaced apart from the thermal management component 1211 along the thickness direction Y of the second wall. The mounting hole 1212a comprises a first hole section 1212e and a second hole section 1212f arranged along the thickness direction X of the thermal management component, the first hole section 1212e is located on a side of the second hole section 1212f close to the assembly cavity 11, the hole wall surface of the first hole section 1212e and the hole wall surface of the second hole section 1212f are connected by a stepped surface 1212g, the stepped surface 1212g is arranged to face the assembly cavity 11, the thermal management component 1211 is located in the first hole section 1212e, and the thermal management component 1211 abuts against the stepped surface 1212g. The thermal management component 1211 is used for managing the temperature of the battery cell 20, and has a flow channel 1211a formed inside for accommodating a heat exchange medium. Along the thickness direction X of the thermal management component, the thermal management component 1211 has oppositely arranged first and second surfaces 1211c and 1211d, the first surface 1211c forms part of the cavity wall surface of the assembly cavity 11, a joint 1211b is welded to the second surface 1211d, the joint 1211b communicates with the flow channel 1211a, and the projection of the joint 1211b on the thickness direction X of the thermal management component is located in the mounting hole 1212a.The mounting rack 1212 has a third surface 1212c facing away from the assembly cavity 11 and a fourth surface 1212d facing the assembly cavity 11 in the thickness direction X of the heat 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 protrude beyond the third surface 1212c, and the first surface 1211c is flush with the fourth surface 1212d. The box body 10 further comprises a support 123 arranged in the mounting hole 1212a and connected to the hole wall surface of the mounting hole 1212a, the support 123 is located on the side of the heat management component 1211 facing away from the assembly cavity 11 in the thickness direction X of the heat management component and abuts against the heat management component 1211, and the projection of the support 123 and the joint 1211b in the thickness direction X of the heat management component does not overlap. The heat management component 1211 comprises a first plate body 1211e and a second plate body 1211f, the first plate body 1211e and the second plate body 1211f are arranged in a stacked manner and connected in the thickness direction X of the heat management component, the second plate body 1211f is located on the side of the first plate body 1211e facing away from the assembly cavity 11 in the thickness direction X of the heat management component, the first plate body 1211e has a first plane 1211g facing the second plate body 1211f, the side of the second plate body 1211f facing the first plate body 1211e is provided with a groove 1211h, and the side of the second plate body 1211f facing away from the first plate body 1211e is formed with a protrusion 1211k corresponding to the position of the groove 1211h, and the groove wall surface of the groove 1211h and the first plane 1211g jointly define a flow channel 1211a. The adapter pipe 30 is used for conveying heat exchange medium, the adapter pipe 30 is arranged in the mounting rack 1212, the adapter pipe 30 has opposite first and second ends 31 and 32, 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 facing away from the heat management component 1211 in the thickness direction Y of the second wall, and the second end 32 is used for communicating with an external component. The mounting rack 1212 is provided with a mounting channel 1212b extending in 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, the other end extends to the outer surface of the mounting rack 1212, and at least part of the adapter pipe 30 is arranged in the mounting channel 1212b. The two limiters 40 are connected to the fourth surface 1212d of the mounting rack 1212 facing the assembly cavity 11 in the thickness direction X of the heat management component, and the two limiters 40 are respectively located between the heat management component 1211 and the two second walls 122 in the thickness direction Y of the second wall. A plurality of battery monomers 20 are arranged between the two limiters 40, the limiter 40 is configured to abut against the battery monomer 20 in the thickness direction Y of the second wall, and each insulator 50 is arranged between one limiter 40 and the plurality of battery monomers 20 in the thickness direction Y of the second wall.The battery cell 20 is arranged corresponding to the thermal management component 1211 along the thickness direction X of the thermal management component, and the projection of the insulating piece 50 does not overlap the projection of the thermal management component 1211, and a spacing space 14 is formed between the limiting piece 40 and the second wall 122 along the thickness direction Y of the second wall, and the spacing space 14 is used to accommodate the wire harness or battery management system of the battery 100. The limiting piece 40 comprises a first limiting part 41 and a second limiting part 42, the first limiting part 41 and the second limiting part 42 are arranged in a stacked manner along the thickness direction X of the thermal management component and are connected to each other, the second limiting part 42 is connected to the fourth surface 1212d of the mounting frame 1212 facing the assembly cavity 11, and the second limiting part 42 is in an integrated structure with the mounting frame 1212.

[0240] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0241] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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, comprising: a box body, an assembly cavity being formed inside the box body; and a battery cell, accommodated in the assembly cavity; wherein the box body has a first wall, the first wall comprising a thermal management component for managing temperature of the battery cell, the thermal management component having a flow channel formed inside for accommodating a heat exchange medium, the thermal management component being provided with a joint, the joint being in communication with the flow channel, and the joint being located outside the assembly cavity.

2. The battery of claim 1, wherein, The thermal management component has a first surface and a second surface oppositely arranged along a thickness direction of the thermal management component, the first surface forming a part of a cavity wall surface of the assembly cavity, and the joint being connected to the second surface.

3. The battery according to claim 1 or 2, wherein The first wall further comprises: a mounting bracket, provided with a mounting hole, the mounting hole extending through the mounting bracket 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 bracket.

4. The battery of claim 3, wherein, The box body further comprises: a second wall, connected to the mounting bracket, the second wall being arranged in a spaced manner with the thermal management component along a thickness direction of the second wall, and the thickness direction of the second wall being perpendicular to the thickness direction of the thermal management component.

5. The battery of claim 4, wherein, A limiting member is connected to a side of the mounting bracket 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 along the thickness direction of the second wall, and the limiting member is configured to abut against the battery cell along the thickness direction of the second wall.

6. The battery of claim 5, wherein, The battery further comprises: an insulating member, arranged between the limiting member and the battery cell along the thickness direction of the second wall.

7. The battery of claim 6, wherein, The battery cell is arranged in a corresponding manner with the thermal management component along the thickness direction of the thermal management component, and a projection of the insulating member does not overlap with a projection of the thermal management component.

8. The battery of any one of claims 5-7, wherein, A spacing space is formed between the limiting member and the second wall along the thickness direction of the second wall.

9. The battery of any one of claims 4-8, wherein, The battery further comprises: an adapter pipe for conveying the heat exchange medium, the adapter pipe being arranged in the mounting bracket; wherein the adapter pipe has a first end and a second end oppositely arranged, the first end being in communication with the joint, and the second end being located at a side of the second wall facing away from the thermal management component along the thickness direction of the second wall, and the second end being configured to be in communication with an external component.

10. The battery of claim 9, wherein, The mounting bracket is provided with a mounting channel, the mounting channel extending to a hole wall surface of the mounting hole; wherein at least a part of the adapter pipe is arranged in the mounting channel.

11. The battery of claim 10, wherein, The mounting channel extends along the thickness direction of the second wall, one end of the mounting channel extending to the hole wall surface of the mounting hole, and the other end extending to an outer surface of the mounting bracket.

12. The battery of any one of claims 3-11, wherein, The thermal management component has a first surface and a second surface oppositely arranged along a thickness direction of the thermal management component, the first surface forming a part of a cavity wall surface of the assembly cavity, and the joint being connected to the second surface; wherein a projection of the joint along the thickness direction of the thermal management component is located in the mounting hole.

13. The battery of claim 12, wherein, The mounting frame has a third surface facing away from the assembly cavity in the thickness direction of the heat management component, and the mounting hole extends to the third surface; In the thickness direction of the heat management component, the joint does not exceed the third surface in the direction from the first surface to the second surface.

14. The battery of any one of claims 3-13, wherein, The mounting hole comprises a first hole section and a second hole section arranged in the thickness direction of the heat management component, the first hole section is located on the side of the second hole section close to the assembly cavity, the hole wall surface of the first hole section and the hole wall surface of the second hole section are connected by a step surface, and the step surface is arranged to face the assembly cavity; The heat management component is located in the first hole section, and the heat management component abuts against the step surface.

15. The battery of claim 14, wherein, 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 heat management component, the first hole section extends to the fourth surface, and the second hole section extends to the third surface; In the thickness direction of the heat management component, the heat management component does not exceed the fourth surface in the direction from the third surface to the fourth surface.

16. The battery of claim 15, wherein, In 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 of any one of claims 3-16, wherein, The box further comprises: A support arranged in the mounting hole and connected to the hole wall surface of the mounting hole, the support is located on the side of the heat management component away from the assembly cavity and abuts against the heat management component in the thickness direction of the heat management component, and the projection of the support and the joint in the thickness direction of the heat management component does not overlap.

18. The battery of any one of claims 3-17, wherein, The heat management component is welded to the mounting frame.

19. The battery of any one of claims 1-18, wherein, The joint is welded to the heat management component.

20. The battery of any one of claims 1-19, wherein, The heat management component comprises a first plate body and a second plate body, the first plate body and the second plate body are arranged in a stacked manner and connected in 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 of claim 20, wherein, In the thickness direction of the heat management component, the first plate body has a first plane facing the second plate body, and a groove is arranged on the side of the second plate body facing the first plate body, and the groove wall surface and the first plane jointly define the flow channel.

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

23. The battery of claim 22, wherein, In the thickness direction of the heat management component, the second plate body is located on the side of the first plate body away from the assembly cavity.

24. The battery of any one of claims 1-23, wherein, The box comprises a first box body and a second box body, the first box body and the second box body are overlapped with each other in the thickness direction of the heat management component and jointly define the assembly cavity, and the first box body comprises the first wall.

25. The battery of claim 24, wherein, The first box body further comprises two second walls, both of which are connected to the first wall, the second box body comprises a third wall and two fourth walls, both of which are connected to the third wall; The first wall and the third wall are oppositely arranged in a first direction, the two second walls are oppositely arranged in a second direction, and the two fourth walls are oppositely arranged in a third direction. The first direction is parallel to a 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 of claim 25, wherein, In the third direction, the first wall is located between the two fourth walls, and two sides of the first wall are connected with the two fourth walls respectively.

27. An electric device comprising the battery of any one of claims 1-26, the battery being configured to provide electric energy.

Images