Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box body assembly and a plug-in assembly, the box body assembly comprises a first wall, the first wall is provided with a first through hole, the plug-in assembly is installed on the box body assembly and comprises a connector and an adapter, the connector comprises an installation part and a power connection part, the installation part is located on the outer side of the first wall, and the power connection part is located on the outer side of the first wall. The power connection part comprises an external power connection end located on the side, away from the first wall, of the installation part and an internal power connection end located on the side, close to the interior of the box body assembly, of the installation part, the internal power connection end corresponds to the first penetrating hole, and at least part of the adapter is located outside the box body assembly and supports the installation part to enable the installation part to be separated from the first wall. According to the battery monomer, the adapter is arranged at the matching part of the first wall and the connector, so that the relative position of the connector and the first wall can be changed according to different sizes of the adapter, and the application range is widened.

Description

Technical Field

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

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. However, for different models, the battery structure needs to be adjusted in a targeted manner to meet the installation and electrical connection requirements of the battery and the vehicle. Utility Model Content

[0003] The embodiments of the present application provide a battery and an electrical device, which are beneficial to improving the compatibility of the battery.

[0004] In a first aspect, an embodiment of the present application provides a battery, comprising: a box assembly and a connector assembly, the box assembly comprising a first wall having a first through-hole, the connector assembly being mounted on the box assembly and comprising a connector and an adapter, the connector comprising a mounting portion and a power connection portion, the mounting portion being located on the outside of the first wall, the power connection portion comprising an external power terminal located on a side of the mounting portion away from the first wall, and an internal power terminal located on a side of the mounting portion close to the inside of the box assembly, the internal power terminal being arranged corresponding to the first through-hole, at least a portion of the adapter being located outside the box assembly, and supporting the mounting portion so that the mounting portion is spaced apart from the first wall.

[0005] In the above technical solution, an adapter is provided at the fitting point between the first wall and the connector, so that the relative position of the connector and the first wall can be changed according to the size of the adapter. Therefore, for different electrical devices, there is no need to differentiate the size of the box assembly or the size of the connector. It is only necessary to select an adapter of a suitable size according to the actual situation of different electrical devices to separate the connector from the first wall by a suitable distance, thereby satisfying the applicability of the battery to different electrical devices, achieving the compatibility of the box assembly and the connector, and reducing the manufacturing cost.

[0006] In some embodiments, the adapter includes a supporting portion, which is disposed between the first wall and the mounting portion to support the mounting portion.

[0007] In the above technical solution, since the adapter includes a support portion disposed between the first wall and the mounting portion, and the support portion is disposed corresponding to the mounting portion, the support portion supports the plug-in connector more reliably and stably, so that the plug-in connector can be stably electrically connected to the plug-in structure of the electrical device, thereby improving the stability and reliability of the battery supplying power to the electrical device. Moreover, the adapter and the plug-in connector are compactly matched, which is conducive to reducing the overall space occupied by the plug-in assembly.

[0008] In some embodiments, the support portion is disposed around the first through hole, and a second through hole corresponding to the first through hole is opened on the support portion, and the power connection portion is disposed in the second through hole.

[0009] In the above technical solution, the support part is conducive to supporting the installation part in a wider range, further improving the support stability of the docking plug. Moreover, the form and setting position of the adapter are conducive to improving the sealing of the box assembly at the installation of the connector, and improving the reliability of the battery. In addition, the support part can also shield the power connection part, reduce the risk of short circuit or leakage of the power connection part, and improve the reliability of the battery.

[0010] In some embodiments, a first sealing member is disposed between the support portion and the first wall, and the first sealing member is disposed around the first through hole.

[0011] In the above technical solution, by providing the first sealing member, the sealing performance of the matching position between the adapter and the box assembly can be improved, which is beneficial to improving the sealing performance of the box assembly at the installation of the connector and improving the reliability of the battery. Moreover, the method of providing the first sealing member between the adapter and the first wall is simple and easy to implement, which reduces the sealing difficulty and improves the sealing effect.

[0012] In some embodiments, the end surface of the support portion facing the first wall has an annular groove, and the first sealing member is embedded in the groove.

[0013] In the above technical solution, by embedding the first seal in the groove, the installation stability of the first seal can be improved, and the sealing reliability of the first wall and the adapter can be improved. In addition, by processing the groove on the adapter instead of processing it on the first wall, the processing difficulty and production cost of the box assembly can be reduced. And processing the groove on the adapter is conducive to increasing the depth of the groove, so as to improve the stability of the first seal and the groove, and then improve the sealing reliability of the first seal.

[0014] In some embodiments, a second sealing member is disposed between the supporting portion and the mounting portion, and the second sealing member is disposed around the second through hole.

[0015] In the above technical solution, by providing the second seal, the sealing performance of the matching position between the adapter and the connector can be improved, which is beneficial to improving the sealing performance of the box assembly at the installation of the connector and improving the reliability of the battery. Moreover, the method of providing the second seal between the adapter and the installation part is simple and easy to implement, which reduces the sealing difficulty and improves the sealing effect.

[0016] In some embodiments, the supporting portion includes an end plate portion and a surrounding plate portion, the surrounding plate portion is arranged around the first through-hole, the end plate portion is connected to one end of the surrounding plate portion away from the first wall, the mounting portion is supported on the side of the end plate portion away from the first wall, the second through-hole passes through the end plate portion, and an avoidance cavity open toward the direction of the first wall is formed between the end plate portion and the surrounding plate portion, the avoidance cavity connects the first through-hole and the second through-hole, and the cross-sectional area of ​​the avoidance cavity is greater than the cross-sectional area of ​​the second through-hole.

[0017] In the above technical solution, the adapter can be formed in the form of a cover, which can achieve weight reduction and reduce costs.

[0018] In some embodiments, the enclosure portion includes a first enclosure segment and a second enclosure segment arranged in sequence from the end plate portion to the first wall, the wall thickness of the first enclosure segment gradually decreases along the direction from the end plate portion to the first wall, and the wall thickness of the second enclosure segment is greater than the wall thickness of the end of the first enclosure segment close to the first wall.

[0019] In the above technical solution, the first enclosure portion gradually thickens toward the direction approaching the end plate portion, which can improve the connection strength between the enclosure portion and the end plate portion, and improve the supporting stability of the enclosure portion to the end plate portion. By setting the wall thickness of the second enclosure section to be greater than the wall thickness of the end portion of the first enclosure section close to the first wall, the stability of the enclosure portion supported on the first wall can be improved, thereby improving the supporting stability of the adapter docking plug-in, so that the connector can be stably electrically connected to the plug-in structure of the electrical device, thereby improving the stability and reliability of the battery supplying power to the electrical device.

[0020] In some embodiments, a through hole is provided on the support portion, the through hole is provided corresponding to the first through hole, and an opening formed by the through hole on a side surface of the support portion away from the first wall constitutes a second through hole.

[0021] In the above technical solution, the structure of the adapter can be simplified, the processing of the adapter is facilitated, and the supporting strength of the adapter can be improved.

[0022] In some embodiments, the adapter is entirely located outside the first wall.

[0023] In the above technical solution, by placing the adapter as a whole outside the box assembly, the adapter can be installed, replaced, etc. directly from the outside of the box assembly, thereby facilitating the assembly and disassembly of the adapter, and the adapter will not occupy the space inside the box assembly, which is beneficial to ensuring the capacity of the battery.

[0024] In some embodiments, the connector is connected to the adapter, and the adapter is connected to the first wall.

[0025] In the above technical solution, it is helpful to improve the connection reliability between the connector and the adapter, and it is helpful to improve the connection reliability between the adapter and the first wall, thereby improving the reliability of the connector assembly installed in the box assembly.

[0026] In some embodiments, the adapter includes a supporting portion, which is disposed between the first wall and the mounting portion to support the mounting portion, and the mounting portion is connected to the supporting portion.

[0027] In the above technical solution, since the adapter includes a supporting portion disposed between the first wall and the mounting portion, and the supporting portion is disposed corresponding to the mounting portion, the supporting portion supports the connector more reliably and stably. Moreover, the position where the adapter supports the connector is connected to the connector, thereby reducing the difficulty of connecting the adapter and the connector and simplifying the structural design.

[0028] In some embodiments, the mounting portion is connected to the supporting portion via a first connecting member, which includes a first rod portion and a first head portion, wherein the first head portion abuts against a side of the mounting portion away from the supporting portion, and the first rod portion passes through the mounting portion and is connected to the supporting portion.

[0029] In the above technical solution, the connector and the adapter can be assembled from the outside to improve the convenience of assembly. Moreover, the adapter and the connector can be installed before the adapter is connected to the first wall, or after the adapter is connected to the first wall, thereby making the assembly steps flexible.

[0030] In some embodiments, the adapter also includes a connecting portion, which is located at the periphery of the supporting portion and exceeds the coverage range of the mounting portion, and the connecting portion is connected to the first wall.

[0031] In the above technical solution, since the adapter also includes a connecting portion located at the periphery of the supporting portion, and the connecting portion exceeds the coverage range of the mounting portion, the connection position of the connecting portion and the first wall can be staggered with the connection position of the supporting portion and the mounting portion, so that the connection between the connecting portion and the first wall does not affect the support and connection of the mounting portion to the supporting portion. Therefore, there is no sequence requirement for the connection steps between the mounting portion and the supporting portion, and the connection steps between the connecting portion and the first wall, so that the assembly is flexible.

[0032] In some embodiments, the connecting portion is connected to the first wall via a second connecting member, the second connecting member includes a second rod portion and a second head portion, the second head portion abuts against a side of the connecting portion away from the first wall, and the second rod portion passes through the connecting portion and is connected to the first wall.

[0033] In the above technical solution, the adapter and the box assembly can be assembled from the outside to improve the convenience of assembly. Moreover, the adapter and the box assembly can be installed before the adapter and the connector, or after the adapter and the connector are connected, thereby making the assembly steps flexible.

[0034] In some embodiments, the adapter also includes reinforcing diagonal ribs connected between the supporting portion and the connecting portion.

[0035] In the above technical solution, the structural strength of the adapter can be improved, which can not only improve the connection reliability between the adapter and the first wall, but also improve the support reliability of the adapter docking plug-in.

[0036] In some embodiments, the support portion is connected to the first wall via a third connecting member, the third connecting member includes a third rod portion and a third head portion, the third head portion abuts against the inner side of the first wall, and the third rod portion penetrates the first wall and is connected to the support portion.

[0037] In the above technical solution, the adapter and the box assembly can be assembled from the inside, which is conducive to reducing the volume and occupied space of the adapter. In addition, when the installation part and the support part are connected through the above-mentioned first connecting member, the adapter and the box assembly can be installed before the adapter and the connector, or after the adapter and the connector are connected, so that the assembly steps are flexible, and when the adapter and the first wall are connected, only the adapter and the first wall need to be aligned, and when the adapter and the connector are connected, only the adapter and the connector need to be aligned, so that the assembly difficulty can be reduced and the assembly efficiency can be further improved.

[0038] In some embodiments, a connection position between the support portion and the mounting portion is staggered from a connection position between the support portion and the first wall.

[0039] In the above technical solution, when the wall thickness of the support part is relatively thin, by setting the above two connection positions to be staggered, the wall thickness of different positions of the support part can be used to meet the connection requirements. Of course, if the wall thickness of the support part is sufficient, the above two connection positions can also be set to correspond, or the above two connection positions can also be set to be staggered, so as to achieve flexible design.

[0040] In some embodiments, the connector, the adapter and the first wall are connected together via a fourth connecting member.

[0041] In the above technical solution, it is beneficial to reduce the volume and occupied space of the adapter, and can save the number of connectors used and reduce costs.

[0042] In some embodiments, the fourth connecting member includes a fourth rod portion and a fourth head portion, the fourth head portion abuts against a side of the mounting portion away from the adapter, and the fourth rod portion penetrates the mounting portion and the adapter and is connected to the first wall.

[0043] In the above technical solution, the connector assembly and the box assembly can be assembled from the outside, thereby improving the convenience of assembly.

[0044] In some embodiments, in the axial direction of the first through hole, the spacing distance between the mounting portion and the first wall is greater than the wall thickness of the mounting portion.

[0045] In the above technical solution, when the spacing distance between the mounting portion and the first wall is relatively large, it is more necessary to provide an adapter that meets the support strength and sealing requirements between the connector and the box assembly.

[0046] In some embodiments, the box assembly includes a box, the battery includes a cell assembly arranged in the box, the cell assembly includes multiple battery cells, the battery includes a thermostat, the thermostat includes at least one of a first thermostat, a second thermostat and a third thermostat, the first thermostat is arranged outside the box and is in contact with the outer wall of the box, the second thermostat is arranged in the box and is located between the cell assembly and the box assembly, and the third thermostat is arranged in the box and is located between adjacent battery cells.

[0047] In the above technical solution, the battery may include only one of the first temperature regulating member, the second temperature regulating member and the third temperature regulating member, or may include two of the first temperature regulating member, the second temperature regulating member and the third temperature regulating member at the same time, or may include all three of the first temperature regulating member, the second temperature regulating member and the third temperature regulating member at the same time. Therefore, the temperature regulating member may be set at an appropriate position according to actual conditions to meet the temperature regulation requirements of the battery.

[0048] In some embodiments, the box assembly includes a box that is an integral stamped part, and the box includes a bottom wall and a surrounding wall, and a side wall of the surrounding wall constitutes the first wall.

[0049] In the above technical solution, since the bottom wall and the surrounding wall of the box are integrally stamped, there is no need to consider the sealing problem at the connection between the bottom wall and the surrounding wall, and the sealing effect can be guaranteed, thereby preventing muddy water from penetrating into the box from the connection between the bottom wall and the surrounding wall and affecting the battery cell assembly, thereby improving the reliability of the battery. Moreover, the integrally stamped box does not need to be spliced, which can improve production efficiency. In addition, setting the connector on the side of the box assembly instead of the bottom or top surface is conducive to reducing the difficulty of connecting the connector with the plug-in structure on the electrical device.

[0050] In some embodiments, a battery cell assembly is disposed in the box, a heat exchange element is laid on the bottom wall of the box, and the heat exchange element is arranged to exchange heat with the battery cell assembly.

[0051] In the above technical solution, the heat exchange area between the heat exchange element and the battery cell assembly can be increased, thereby improving the temperature control effect of the battery cell assembly.

[0052] In some embodiments, the heat exchange element includes at least one first heat exchange channel, the first heat exchange channel includes a first heat exchange section, a second heat exchange section and a third heat exchange section, the second heat exchange section is bent to form a first U-shaped area, the first heat exchange section is bent and arranged in the first U-shaped area, and is connected to the second heat exchange section by the third heat exchange section, and the second heat exchange section is located at the outermost side of the circumference of the first heat exchange channel.

[0053] In the above technical scheme, the second heat exchange section is bent to form a first U-shaped area, and the first heat exchange section is bent and arranged in the first U-shaped area, and the second heat exchange section is arranged to be located at the outermost side of the circumference of the first heat exchange flow channel. When the heat exchange component of this embodiment is used to exchange heat with the battery cell assembly, at least a part of the first U-shaped area formed by the outer second heat exchange section can be opposite to at least a part of the battery cells on the outer periphery of the battery cell assembly, so that the second heat exchange section can exchange heat with at least a part of the battery cells on the outer periphery of the battery cell assembly, and the first heat exchange section in the first U-shaped area is opposite to the internal battery cells, so that the heat exchange component can compensate for the internal and external temperature difference caused by the heat exchange between the peripheral battery cells and the environment, so that the heat exchange effect of the battery cells outside the battery cell assembly and the battery cells inside the battery cell assembly are consistent, which is beneficial to improving the temperature difference of the battery cell assembly in different environments and improving the temperature uniformity of the battery, thereby improving the service life of the battery to a certain extent.

[0054] In some embodiments, the battery cell assembly includes multiple battery cells arranged along a first direction, each battery cell includes multiple battery cells stacked in sequence along a second direction, and at least a portion of the second heat exchange segment exchanges heat with multiple battery cells located at the outermost circumference of the battery cell assembly.

[0055] In the above technical solution, by coordinating the arrangement of the battery cells and the extended arrangement of the first heat exchange channel, and setting at least a portion of the second heat exchange section to exchange heat with the peripheral battery cell group, the heat exchange efficiency of the peripheral battery cell group can be improved, and the temperature difference caused by the heat dissipation of the peripheral battery cells of the battery assembly being greater than the heat dissipation of the inner battery cells can be further balanced.

[0056] In some embodiments, the heat exchange element further includes at least one second heat exchange channel, and the second heat exchange channel and the first heat exchange channel are bent in the same plane, and the second heat exchange channel is bent in the first U-shaped region of the first heat exchange channel.

[0057] In the above technical solution, by setting at least one first heat exchange channel and at least one second heat exchange channel, and by coordinating the relative position relationship between the two, the arrangement of the heat exchange channels can be designed according to the cooling requirements of the battery, thereby further optimizing the temperature regulation effect of the battery cell assembly and improving the temperature uniformity of the battery.

[0058] In some embodiments, at least one second heat exchange channel is bent to form a second U-shaped region, and at least a portion of the first heat exchange section is disposed in the second U-shaped region of the second heat exchange channel.

[0059] In the above technical solution, a second U-shaped area is formed by setting at least one second heat exchange channel bend, and at least part of the first heat exchange section is set in the second U-shaped area of ​​the second heat exchange channel, which is beneficial to the coordinated cooperation of the first heat exchange channel and the second heat exchange channel to further improve the temperature uniformity of the battery.

[0060] In some embodiments, the heat exchange element includes at least one bent and extended heat exchange tube, each heat exchange tube defines a heat exchange channel, and the heat exchange tube is a flat tube structure.

[0061] In the above technical solution, the heat exchange component with a flat tube structure occupies a small space, which is beneficial to increasing the capacity of the battery and reducing the weight, volume and cost of the battery.

[0062] In a second aspect, an embodiment of the present application further provides an electrical device, comprising a battery according to any of the above solutions.

[0063] In the above technical solution, since the performance of the battery is improved, it is beneficial to improve the working power performance of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0066] Figure 2 An exploded view of the structure of a battery provided in some embodiments of the present application;

[0067] Figure 3 A schematic diagram of a box assembly and a connector assembly provided in Example 1 of the present application;

[0068] Figure 4 for Figure 3 A partial enlarged view of the A part circled in the middle;

[0069] Figure 5 for Figure 3 The assembly drawing of the box assembly and the connector assembly shown in ;

[0070] Figure 6 for Figure 5 A partial enlarged view of the B part circled in the middle;

[0071] Figure 7 for Figure 5A cross-sectional view of the box assembly and the connector assembly shown in ;

[0072] Figure 8 for Figure 5 An orthographic view of the box assembly and the connector assembly shown in ;

[0073] Fig. 9 for Figure 8 A partial enlarged view of the C section circled in the middle;

[0074] Fig.10 An assembly diagram of the box assembly and the connector assembly provided in Example 2 of the present application;

[0075] Fig.11 for Fig.10 An exploded view of the box assembly and the connector assembly shown in FIG.

[0076] Fig.12 for Fig.10 A cross-sectional view of the box assembly and the connector assembly shown in ;

[0077] Fig.13 for Fig.10 An orthographic view of the box assembly and the connector assembly shown in ;

[0078] Fig.14 An assembly diagram of the box assembly and the connector assembly provided in Example 3 of the present application;

[0079] Fig.15 for Fig.14 An exploded view of the box assembly and the connector assembly shown in FIG.

[0080] Fig.16 for Fig.14 A cross-sectional view of the box assembly and the connector assembly shown in ;

[0081] Fig.17 for Fig.14 An orthographic view of the box assembly and the connector assembly shown in ;

[0082] Fig.18 A partial cross-sectional view of a battery provided for some embodiments of the present application;

[0083] Fig.19 An exploded view of a portion of a battery provided in some embodiments of the present application;

[0084] Fig. 20 An assembly diagram of a partial composition of a battery provided for some embodiments of the present application;

[0085] Fig.21 An exploded view of a portion of a battery provided in some embodiments of the present application;

[0086] Fig. 22An exploded view of a heat exchange component, etc. provided in some embodiments of the present application;

[0087] Fig.23 A partial cross-sectional view of a battery provided for some embodiments of the present application;

[0088] Fig.24 A schematic diagram of the cooperation between the heat exchange component and the battery core assembly provided in some embodiments of the present application;

[0089] Fig.25 A schematic diagram of a heat exchange element provided for some embodiments of the present application;

[0090] Fig.26 Schematic diagram of heat exchange components provided for other embodiments of the present application.

[0091] Reference numerals: vehicle 1000; battery 100; controller 200; motor 300; box assembly 1; first direction X; second direction Y; third direction Z; box 11; first wall 111; first through hole 1111; bottom wall 11a; surrounding wall 11b; second wall 112; first space 113; second space 114; box cover 12; expansion beam 13; first expansion beam 131; second expansion beam 132; bottom guard plate 14; first guard plate 141; second guard plate 142; Foaming member 17; first foaming portion 171; second foaming portion 172; sealing member 18; peripheral portion 181; bottom glue layer 19; battery core assembly 2; battery cell 21; battery unit 20; heat exchange member 31; first heat exchange channel 3110; first heat exchange section 3111; second heat exchange section 3112; third heat exchange section 3113; first U-shaped area Z1; first section R1; second section R2; third section R3; fourth section R4; second heat exchange channel 3114; second U-shaped area Z2 ; heat exchange tube 312; current collector 32; connecting tube 36; first sealing member 37; second sealing member 38; connector assembly 4; connector 41; mounting portion 411; power connection portion 412; external power terminal 4121; internal power terminal 4122; adapter 42; support portion 421; second through hole 4211; groove 4212; end plate portion 4213; enclosure portion 4214; first enclosure section 42141; second enclosure section 42142; avoidance cavity 4215; through hole 4216; Connecting part 422; reinforcing oblique rib 423; first sealing member 51; protrusion 511; second sealing member 52; first connecting member 61; first rod 611; first head 612; second connecting member 62; second rod 621; second head 622; third connecting member 63; third rod 631; third head 632; fourth connecting member 64; fourth rod 641; fourth head 642; thermostat 7; first thermostat 71; second thermostat 72; third thermostat 73. DETAILED DESCRIPTION

[0092] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0093] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0094] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0095] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0096] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0097] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0098] The term "plurality" used in the present application refers to two or more (including two).

[0099] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0100] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. The battery generally includes a box assembly for encapsulating one or more battery cells or one or more battery modules. The battery module generally includes multiple battery cells. The box assembly can improve the effect of liquid or other foreign matter on the charging or discharging of the battery cells.

[0101] A battery cell includes a shell, an electrode assembly and an electrolyte. The shell is used to contain the electrode assembly and the electrolyte. One or more electrode assemblies are arranged in the shell. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The electrode assembly can be a wound structure or a stacked structure. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work.

[0102] The positive electrode sheet can generally include a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is directly or indirectly coated on the positive electrode current collector, the positive electrode current collector not coated with the positive electrode active material layer protrudes from the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector not coated with the positive electrode active material layer serves as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the material of the positive electrode active material layer can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc.

[0103] The negative electrode sheet may generally include a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is directly or indirectly coated on the negative electrode current collector, and the negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector may be copper, and the material of the negative electrode active material layer may be carbon or silicon, etc.

[0104] In order to ensure that a large current can be passed without melting, the number of positive pole tabs is multiple and stacked together to form the positive pole tab portion, and the number of negative pole tabs is multiple and stacked together to form the negative pole tab portion. A pole column is provided on the shell, and the positive pole tab portion is electrically connected to the positive pole column, and the negative pole tab portion is electrically connected to the negative pole column. The pole tab portion can be directly connected to the pole column, or indirectly connected to the pole column through an adapter.

[0105] The material of the isolation film is not limited, for example, it can be polypropylene or polyethylene.

[0106] When the battery in the related art is used in an electrical device, a battery mounting position and a plug-in structure are provided on the electrical device, the battery is installed in the battery mounting position, and the battery has a connector that plugs with the plug-in structure to achieve electrical conduction. However, the relative positions of the battery mounting position and the plug-in structure are different on different electrical devices, and different box assemblies or connectors need to be separately provided for different powered devices, resulting in poor compatibility and high manufacturing costs.

[0107] To this end, an embodiment of the present application proposes a battery. By setting an adapter between the box assembly and the connector, the relative position of the connector and the box assembly can be changed by selecting adapters of different sizes to meet the different relative positions of the battery mounting position and the plug-in structure on different electrical devices. This allows the battery to be installed in the battery mounting position without changing the box assembly and the connector structure, and the connector can be docked with the plug-in structure to adapt to various situations where the relative positions of the battery mounting position and the plug-in structure are different, thereby improving the applicability of the battery and reducing manufacturing costs.

[0108] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0109] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0110] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0111] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0112] Please refer to Figure 2 , Figure 2 An exploded view of the structure of a battery 100 provided for some embodiments of the present application. The battery 100 includes a box assembly 1 and a cell assembly 2. The cell assembly 2 is disposed in the box assembly 1. The cell assembly 2 includes a plurality of battery cells 21. The plurality of battery cells 21 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 21 are both connected in series and in parallel. The plurality of battery cells 21 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the plurality of battery cells 21 is accommodated in the box assembly 1; of course, the plurality of battery cells 21 can also be first connected in series, in parallel, or in mixed connection to form a battery module, and then the plurality of battery modules are connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box assembly 1.

[0113] The battery 100 may also include other structures. For example, the battery 100 may also include a thermostat 7, which is used to exchange heat with the battery cell assembly 2 to adjust the temperature of the battery cell assembly 2, thereby improving the working reliability of the battery 100. For another example, the battery 100 may also include a busbar component, which is used to achieve electrical connection between multiple battery cells 21. Each battery cell 21 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 21 may be cylindrical, flat, rectangular, etc.

[0114] like Figure 3 and Figure 4As shown, the box assembly 1 includes a first wall 111, and the first wall 111 has a first perforation 1111. In the embodiment of the present application, the shape and structure of the box assembly 1 are not limited. For example, the box assembly 1 may include a box body 11 and a box cover 12 provided on the box body 11. The box body 11 may be in a shape with an open top or a shape with an open bottom, etc.; for example, the box body 11 may be a sheet metal part formed by integral stamping, or a component formed by splicing multiple sheet metals, etc. Among them, it is not limited to which wall of the box assembly 1 the first wall 111 is, and it can be determined according to the specific shape of the box assembly 1 and the specific actual situation. For example, it can be a side wall, a top wall, or a bottom wall of the box assembly 1, etc.

[0115] like Figure 4-Figure 6 As shown, the battery 100 also includes a connector assembly 4, which is installed on the box assembly 1. The connector assembly 4 includes a connector 41, and the connector 41 includes a mounting portion 411 and a power connection portion 412. The mounting portion 411 is located on the outer side of the first wall 111 (that is, the side of the first wall 111 away from the inside of the box assembly 1, and the side of the first wall 111 close to the inside of the box assembly 1 is the inner side of the first wall 111), and the power connection portion 412 includes an external power terminal 4121 located on the side of the mounting portion 411 away from the first wall 111, and an internal power terminal 4122 located on the side of the mounting portion 411 close to the inside of the box assembly 1, and the internal power terminal 4122 is arranged corresponding to the first through hole 1111. In an embodiment of the present application, the function of the connector 41 can be to realize the electrical connection between the battery 100 and the electrical device, and the internal electrical terminal 4122 of the electrical connection portion 412 extends from the first through-hole 1111 into the box assembly 1 or is exposed at the first through-hole 1111, so that the battery cell assembly 2 in the box assembly 1 can be electrically connected to the internal electrical terminal 4122, and the external electrical terminal 4121 of the electrical connection portion 412 is located outside the box assembly 1 and is used to be plugged into the plug-in structure of the electrical device. For example, the external electrical terminal 4121 can be used as a socket of the high-voltage connector of the battery 100 and plugged into the plug-in structure (such as a plug) of the electrical device.

[0116] like Figure 4 and Figure 6As shown, at least part of the adapter 42 is located outside the box assembly 1, and supports the mounting portion 411 so that the mounting portion 411 is spaced apart from the first wall 111. That is, by providing the adapter 42, under the support of the adapter 42, a spacing is provided between the mounting portion 411 and the first wall 111, while the non-mounting portion 411 is closely attached to the first wall 111. The space between the mounting portion 411 and the first wall 111 can be vacant or filled by the adapter 42, and there is no limitation here, as long as there is a spacing between the mounting portion 411 and the first wall 111, the spacing between the mounting portion 411 and the first wall 111 is considered to be a spacing arrangement between the two. The relative position of the adapter 42 and the box assembly 1 is not limited. For example, only a portion of the adapter 42 can be located outside the box assembly 1, or the entire adapter 42 can be located outside the box assembly 1. As long as the adapter 42 can support the mounting portion 411 so that there is a distance between the mounting portion 411 and the first wall 111, the protruding position of the external electrical terminal 4121 relative to the first wall 111 meets the requirements of the plug-in structure.

[0117] Therefore, according to the embodiment of the present application, by providing an adapter 42 at the connection between the box assembly 1 and the connector 41, the relative position of the connector 41 and the box assembly 1 can be changed according to the size of the adapter 42. Therefore, for different electrical devices, there is no need to differentiate the size of the box assembly 1 or the size of the connector 41. It is only necessary to select an adapter 42 of a suitable size according to the actual situation of different electrical devices (such as the relative position of the battery mounting position and the plug-in structure on the electrical device) to separate the connector 41 from the box assembly 1 by a suitable distance, so that the protruding position of the connector 41 relative to the box assembly 1 can take into account the requirements of installing the battery 100 in the battery mounting position and plugging the connector 41 into the plug-in structure on the electrical device, thereby meeting the applicability of the battery 100 to different electrical devices, achieving the compatibility of the box assembly 1 and the connector 41, and reducing the manufacturing cost.

[0118] In the related art, the battery connector is directly mounted on the box, and the protruding position of the connector relative to the box is fixed. When the relative position between the battery installation position on the electrical device and the plug-in structure changes, the connector plugged with the plug-in structure cannot be installed on the box, or the connector installed on the box cannot approach the plug-in structure on the electrical device, and plug-in cannot be achieved. Therefore, the size of the box or the size of the connector can only be changed to make the protruding position of the connector on the battery installed at the battery installation position relative to the box meet the plug-in requirements of the connector and the plug-in structure. Such a box and connector cannot meet the universal requirements and need to increase the manufacturing cost.

[0119] According to the battery 100 of the embodiment of the present application, an adapter 42 is provided at the connection between the box assembly 1 and the connector 41, and the position of the connector 41 relative to the box assembly 1 is adjustable through the adapter 42, so that the protruding position of the connector 41 relative to the box assembly 1 can meet the connection requirements of the connector 41 and the plug-in structure on different electrical devices, and can be suitable for different electrical devices.

[0120] In some embodiments of the present application, Figure 4 , Figure 6 and Figure 7 As shown, the adapter 42 includes a support portion 421, and the support portion 421 is disposed between the first wall 111 and the mounting portion 411 to support the mounting portion 411. Therefore, since the adapter 42 includes the support portion 421 disposed between the first wall 111 and the mounting portion 411, and the support portion 421 is disposed corresponding to the mounting portion 411, the support of the support portion 421 to the plug-in connector 41 is more reliable and stable, so that the plug-in connector 41 can be stably electrically connected to the plug-in structure of the electrical device, thereby improving the stability and reliability of the battery 100 supplying power to the electrical device. Moreover, the adapter 42 and the plug-in connector 41 are compactly matched, which is conducive to reducing the overall space occupied by the plug-in assembly 4.

[0121] In some embodiments of the present application, Figure 4 , Figure 6 and Figure 7 As shown, the support portion 421 is arranged around the first through hole 1111, and a second through hole 4211 corresponding to the first through hole 1111 is opened on the support portion 421, and the power connection portion 412 is inserted into the second through hole 4211. As a result, the support portion 421 is conducive to supporting the mounting portion 411 in a larger range, thereby further improving the support stability of the docking plug-in 41, so that the connector 41 can be stably electrically connected to the plug-in structure of the electrical device, thereby improving the stability and reliability of the battery 100 supplying power to the electrical device. Moreover, the form and setting position of the adapter 42 are conducive to improving the sealing of the box assembly 1 at the installation of the connector 41, thereby improving the reliability of the battery 100. In addition, the support portion 421 can also shield the power connection portion 412, increase the risk of short circuit or leakage of the power connection portion 412, and improve the reliability of the battery 100.

[0122] Of course, the present application is not limited thereto. For example, in other embodiments of the present application, the support portion 421 may not be arranged around the first through hole 1111 . For example, the support portion 421 may also be a plurality of pillars spaced apart around the power connection portion 412 .

[0123] In some embodiments of the present application, Figure 4 and Figure 7As shown, a first sealing member 51 is provided between the support portion 421 and the first wall 111, and the first sealing member 51 is provided around the first through hole 1111. Thus, by providing the first sealing member 51, the sealing performance of the matching position between the adapter 42 and the box assembly 1 can be improved, which is beneficial to improving the sealing performance of the box assembly 1 at the installation of the connector 41, and improving the reliability of the battery 100. Moreover, the method of providing the first sealing member 51 between the adapter 42 and the first wall 111 is simple and easy to implement, which reduces the sealing difficulty and improves the sealing effect.

[0124] For example, Figure 4 and Figure 7 As shown, the end surface of the support portion 421 facing the first wall 111 has an annular groove 4212, and the first seal 51 is a sealing ring and is embedded in the groove 4212. Therefore, by embedding the first seal 51 in the groove 4212, the installation stability of the first seal 51 can be improved, and the sealing reliability of the matching position between the first wall 111 and the adapter 42 can be improved. In addition, by processing the groove 4212 on the adapter 42 instead of processing it on the first wall 111, the processing difficulty and production cost of the box assembly 1 can be reduced. And processing the groove 4212 on the adapter 42 is conducive to increasing the depth of the groove 4212, so as to improve the stability of the matching between the first seal 51 and the groove 4212, and then improve the sealing reliability of the first seal 51.

[0125] For example, Figure 4 and Figure 7 As shown, the inner ring surface and the outer ring surface of the first seal 51 respectively have a plurality of protrusions 511 arranged at intervals along the circumferential direction, and the first seal 51 is interference-fitted with the groove 4212 through the protrusions 511, that is, the plurality of protrusions 511 on the inner ring surface of the first seal 51 are interference-fitted with the inner ring surface of the groove 4212, and the plurality of protrusions 511 on the outer ring surface of the first seal 51 are interference-fitted with the outer ring surface of the groove 4212. Thus, the reliability of the fit between the first seal 51 and the groove 4212 can be improved, and the sealing reliability of the first seal 51 can be further improved.

[0126] In some embodiments of the present application, Figure 7 As shown, a second sealing member 52 is provided between the support portion 421 and the mounting portion 411, and the second sealing member 52 is provided around the second through hole 4211. Thus, by providing the second sealing member 52, the sealing performance of the matching position between the adapter 42 and the connector 41 can be improved, which is beneficial to improving the sealing performance of the box assembly 1 at the location where the connector 41 is installed, and improving the reliability of the battery 100. Moreover, the method of providing the second sealing member 52 between the adapter 42 and the mounting portion 411 is simple and easy to implement, which reduces the sealing difficulty and improves the sealing effect.

[0127] Exemplarily, an annular recessed groove may be provided on at least one of the adapter 42 and the mounting portion 411 , and the second seal 52 may be embedded in the recessed groove to improve the installation stability of the second seal 52 and improve the sealing reliability of the matching position between the adapter 42 and the mounting portion 411 .

[0128] In some embodiments of the present application, Figure 4 and Figure 7 As shown, the support portion 421 includes an end plate portion 4213 and a surrounding plate portion 4214, the surrounding plate portion 4214 is arranged around the first through hole 1111, the end plate portion 4213 is connected to one end of the surrounding plate portion 4214 away from the first wall 111, the mounting portion 411 is supported on one side of the end plate portion 4213 away from the first wall 111, the second through hole 4211 passes through the end plate portion 4213, and a avoidance cavity 4215 opened toward the first wall 111 is formed between the end plate portion 4213 and the surrounding plate portion 4214, the avoidance cavity 4215 is connected to the first through hole 1111 and the second through hole 4211, and the cross-sectional area of ​​the avoidance cavity 4215 is greater than the cross-sectional area of ​​the second through hole 4211. The cross-sectional area of ​​the avoidance cavity 4215 and the cross-sectional area of ​​the second through hole 4211 are both obtained by cutting a plane perpendicular to the axis of the first through hole 1111. Thus, the adapter 42 can be formed in the form of a cover rather than a solid block, which can achieve weight reduction and reduce costs.

[0129] Of course, the present application is not limited thereto. In other embodiments of the present application, the adapter 42 may also be configured as a solid block, and a through hole 4216 may be provided on the adapter 42. Fig.12 and Fig.16 The opening formed by the through hole 4216 on the side surface of the adapter 42 away from the first wall 111 constitutes a second through hole 4211, thereby simplifying the structure of the adapter 42, facilitating the processing of the adapter 42, and helping to improve the supporting strength of the adapter 42.

[0130] In some embodiments of the present application, Figure 4 and Figure 7 As shown, the enclosure portion 4214 includes a first enclosure segment 42141 and a second enclosure segment 42142 which are arranged in sequence from the end plate portion 4213 to the first wall 111. The wall thickness of the first enclosure segment 42141 gradually decreases along the direction from the end plate portion 4213 to the first wall 111, and the wall thickness of the second enclosure segment 42142 is greater than the wall thickness of the end of the first enclosure segment 42141 close to the first wall 111.

[0131] Thus, the first enclosure portion 4214 gradually thickens in the direction approaching the end plate portion 4213, which can improve the connection strength between the enclosure portion 4214 and the end plate portion 4213, and improve the supporting stability of the enclosure portion 4214 to the end plate portion 4213. By setting the wall thickness of the second enclosure section 42142 to be greater than the wall thickness of the end of the first enclosure section 42141 close to the first wall 111, the stability of the enclosure portion 4214 supported on the first wall 111 can be improved, thereby improving the supporting stability of the adapter 42 and the connector 41, so that the connector 41 can be stably electrically connected to the plug-in structure of the electrical device, thereby improving the stability and reliability of the battery 100 in supplying power to the electrical device. In addition, when a groove 4212 for embedding the first seal 51 is formed on the enclosure portion 4214, by setting the wall thickness of the second enclosure section 42142 to be larger, it is beneficial to increase the groove width of the groove 4212 and increase the thickness of the first seal 51, thereby facilitating the improvement of the sealing performance of the adapter 42 and the box assembly 1.

[0132] In some embodiments of the present application, Figure 4 and Figure 6 As shown, the adapter 42 is located entirely outside the first wall 111 (i.e., on the side away from the inside of the box assembly 1). Therefore, by placing the adapter 42 entirely outside the box assembly 1, the adapter 42 can be installed, replaced, etc. directly from the outside of the box assembly 1, thereby facilitating the assembly and disassembly of the adapter 42, and the adapter 42 does not occupy the space inside the box assembly 1, which is conducive to ensuring the capacity of the battery 100.

[0133] For example, Figure 4 and Figure 6 As shown, the adapter 42 includes a supporting portion 421 and a connecting portion 422. The supporting portion 421 is arranged between the mounting portion 411 and the first wall 111, and the connecting portion 422 is located at the periphery of the supporting portion 421 and is used to connect to the first wall 111. When the adapter 42 is located as a whole on the outside of the first wall 111, the supporting portion 421 and the connecting portion 422 are both located on the outside of the first wall 111.

[0134] In the embodiments of the present application, the connection relationship and installation order among the adapter 42, the box assembly 1 and the connector 41 are not limited. For example, the adapter 42 can be installed on the box assembly 1 first, and then the connector 41 can be installed on the adapter 42. For another example, the adapter 42 can be installed on the connector 41 first, and then the connector 41 can be installed on the box assembly 1. For another example, the adapter 42 and the connector 41 can be installed separately on the box assembly 1, and so on.

[0135] In some embodiments of the present application, Figure 4 and Figure 7As shown, the connector 41 is connected to the adapter 42, and the adapter 42 is connected to the first wall 111. This is conducive to improving the connection reliability between the connector 41 and the adapter 42, and is conducive to improving the connection reliability between the adapter 42 and the first wall 111, thereby improving the reliability of the connector assembly 4 installed on the box assembly 1. The connection between the connector 41 and the adapter 42 can be a detachable connection, such as a threaded connection, or a non-detachable connection, such as riveting. The connection between the adapter 42 and the first wall 111 can be a detachable connection, such as a threaded connection, or a non-detachable connection, such as riveting. When a detachable connection is selected, it is convenient to replace the adapter 42. When a non-detachable connection is selected, it is convenient to improve the sealing and reliability of the connection.

[0136] Exemplarily, the assembly operation of the connector 41 and the adapter 42 is not affected by the state of connection between the adapter 42 and the first wall 111. That is, no matter whether the adapter 42 and the first wall 111 are in a connected state or a separated state, the assembly steps of the connector 41 and the adapter 42 can be performed, so that the installation sequence is flexible. For example, the connector 41 and the adapter 42 can be connected to form an assembly first, and then the assembly is installed to the box assembly 1. For another example, the adapter 42 can be installed on the first wall 111 first, and then the connector 41 can be installed on the adapter 42, so as to improve the assembly flexibility.

[0137] For example, when the connector 41 is connected to the adapter 42, and the adapter 42 is connected to the first wall 111, the adapter 42 can be completely located outside the box assembly 1 to facilitate the assembly of the adapter 42 and the first wall 111. However, the present application is not limited thereto, and in some other specific examples of the present embodiment, when the connector 41 is connected to the adapter 42, and the adapter 42 is connected to the first wall 111, the adapter 42 can also partially extend into the box assembly 1, for example, partially extend into the box assembly 1 through the first through hole 1111, to improve the flexibility of the design.

[0138] In some embodiments of the present application, Figure 4 , Figure 6 and Figure 7 As shown, the adapter 42 includes a supporting portion 421 , which is disposed between the first wall 111 and the mounting portion 411 to support the mounting portion 411 , and the mounting portion 411 is connected to the supporting portion 421 .

[0139] Thus, since the adapter 42 includes the support portion 421 disposed between the first wall 111 and the mounting portion 411, and the support portion 421 is disposed corresponding to the mounting portion 411, the support of the support portion 421 to the connector 41 is more reliable and stable. Moreover, the position where the adapter 42 supports the connector 41 is connected to the connector 41, thereby reducing the difficulty of connecting the adapter 42 to the connector 41 and simplifying the structural design.

[0140] Exemplarily, the mounting portion 411 is connected to the supporting portion 421 via a first connecting member 61 , which includes a first rod portion 611 and a first head portion 612 , the first head portion 612 abuts against a side of the mounting portion 411 away from the supporting portion 421 , and the first rod portion 611 passes through the mounting portion 411 and is connected to the supporting portion 421 .

[0141] For example, the first connecting member 61 may be a threaded fastener or a rivet, etc., which extends into the mounting portion 411 and the supporting portion 421 along the direction from the outer side of the first wall 111 to the inner side of the first wall 111, so as to realize the connection between the mounting portion 411 and the supporting portion 421. Exemplarily, when the first connecting member 61 is a threaded fastener (such as a screw or a bolt), the supporting portion 421 may be provided with a threaded hole, or an embedded nut or an external nut, etc., to realize the connection. When the first connecting member 61 is a rivet, it may be connected by riveting, etc.

[0142] Thus, the connector 41 and the adapter 42 can be assembled from the outside, which improves the convenience of assembly. Moreover, the adapter 42 and the connector 41 can be installed before the adapter 42 is connected to the first wall 111, or can be installed after the adapter 42 is connected to the first wall 111, thereby making the assembly steps flexible.

[0143] In some embodiments of the present application, Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, the adapter 42 further includes a connecting portion 422 , which is located at the periphery of the supporting portion 421 and exceeds the coverage of the mounting portion 411 , and is connected to the first wall 111 .

[0144] Therefore, since the adapter 42 also includes a connecting portion 422 located at the periphery of the supporting portion 421, and the connecting portion 422 exceeds the coverage range of the mounting portion 411, the connection position of the connecting portion 422 and the first wall 111 can be staggered with the connection position of the supporting portion 421 and the mounting portion 411, so that the connection between the connecting portion 422 and the first wall 111 does not affect the support and connection of the mounting portion 411 by the supporting portion 421, so that there is no sequence requirement for the connection steps between the mounting portion 411 and the supporting portion 421, and the connection steps between the connecting portion 422 and the first wall 111, and the sequence can be selected according to actual needs, such as first connecting the mounting portion 411 and the supporting portion 421 and then connecting the first wall 111 and the connecting portion 422, or first connecting the first wall 111 and the connecting portion 422 and then connecting the mounting portion 411 and the supporting portion 421, so that the assembly is flexible.

[0145] For example, Figure 4 , Figure 6 and Fig. 9 As shown, the connecting portion 422 is connected to the first wall 111 via a second connecting member 62. The second connecting member 62 includes a second rod portion 621 and a second head portion 622. The second head portion 622 abuts against a side of the connecting portion 422 away from the first wall 111. The second rod portion 621 passes through the connecting portion 422 and is connected to the first wall 111.

[0146] For example, the second connecting member 62 may be a threaded fastener or a rivet, etc., which extends into the connecting portion 422 and the first wall 111 along the direction from the outer side of the first wall 111 to the inner side of the first wall 111, so as to realize the connection between the connecting portion 422 and the first wall 111. Exemplarily, when the second connecting member 62 is a threaded fastener (such as a screw or a bolt), the first wall 111 may be provided with a threaded hole, or a nut or an external nut may be embedded therein to realize the connection, and when the second connecting member 62 is a rivet, the connection may be realized by riveting or the like.

[0147] Thus, adapter 42 and box assembly 1 can be assembled from the outside, which improves the convenience of assembly. Moreover, adapter 42 and box assembly 1 can be installed before adapter 42 and connector 41, or can be installed after adapter 42 and connector 41 are connected, thereby making the assembly steps flexible.

[0148] In some embodiments of the present application, Figure 4 and Figure 6 As shown, the adapter 42 also includes a reinforcing oblique rib 423 connected between the support portion 421 and the connection portion 422. Thus, the structural strength of the adapter 42 can be improved, the connection reliability between the adapter 42 and the first wall 111 can be improved, and the support reliability of the adapter 42 docking the plug-in 41 can be improved.

[0149] Of course, the present application is not limited thereto, and when the adapter 42 does not include the connecting portion 422 located around the supporting portion 421, the connection between the adapter 42 and the box assembly 1 can also be achieved. Figure 10-13 As shown, the support portion 421 is connected to the first wall 111 via a third connecting member 63 , which includes a third rod portion 631 and a third head portion 632 , the third head portion 632 abuts against the inner side of the first wall 111 , and the third rod portion 631 penetrates the first wall 111 and is connected to the support portion 421 .

[0150] For example, the third connection member 63 may be a threaded fastener or a rivet, etc., extending into the first wall 111 and the support portion 421 along the direction from the inner side of the first wall 111 to the outer side of the first wall 111, so as to realize the connection between the support portion 421 and the first wall 111. Exemplarily, when the third connection member 63 is a threaded fastener (such as a screw or a bolt), the support portion 421 may be provided with a threaded hole, or an embedded nut or an external nut, etc., to realize the connection, and when the third connection member 632 is a rivet, it may be connected by riveting or the like.

[0151] Thus, the adapter 42 and the box assembly 1 can be assembled from the inside, and the adapter 42 does not need to be provided with the connecting portion 422 located around the supporting portion 421, thereby reducing the volume and occupied space of the adapter 42. In addition, when the mounting portion 411 and the supporting portion 421 are connected through the above-mentioned first connecting member 61, the adapter 42 and the box assembly 1 can be installed before the adapter 42 and the connector 41, and the adapter 42 and the box assembly 1 can be installed after the adapter 42 and the connector 41 are connected, thereby making the assembly steps flexible, and when the adapter 42 and the first wall 111 are connected, only the adapter 42 and the first wall 111 need to be aligned, and when the adapter 42 and the connector 41 are connected, only the adapter 42 and the connector 41 need to be aligned, thereby reducing the difficulty of assembly and further improving the assembly efficiency.

[0152] Exemplarily, when the mounting portion 411 is connected to the supporting portion 421, and the supporting portion 421 is connected to the first wall 111 through the third connecting member 63, the connection position between the supporting portion 421 and the mounting portion 411 and the connection position between the supporting portion 421 and the first wall 111 are staggered, for example, the first connecting member 61 and the third connecting member 63 are not directly opposite.

[0153] Therefore, when the wall thickness of the support portion 421 is relatively thin, by setting the two connection positions to be staggered, the wall thickness of different positions of the support portion 421 can be used to meet the connection requirements. Of course, if the wall thickness of the support portion 421 is sufficient, the two connection positions can be set to correspond, or the two connection positions can be set to be staggered, thereby achieving flexible design.

[0154] In addition, in the present application, the adapter 42 is not limited to being connected to the connector 41 and the first wall 111 separately. For example, in some other embodiments of the present application, Figure 14-17As shown, the connector 41, the adapter 42 and the first wall 111 may be connected together through the fourth connection member 64, that is, the fourth connection member 64 simultaneously connects the connector 41, the adapter 42 and the first wall 111. Therefore, the adapter 42 does not need to be provided with a connection portion 422 located around the support portion 421, thereby reducing the volume and occupied space of the adapter 42, and saving the number of connectors used, thereby reducing costs.

[0155] For example, Figure 14-17 As shown, the fourth connecting member 64 includes a fourth rod portion 641 and a fourth head portion 642 . The fourth head portion 642 abuts against a side of the mounting portion 411 away from the adapter 42 . The fourth rod portion 641 penetrates the mounting portion 411 and the adapter 42 and is connected to the first wall 111 .

[0156] For example, the fourth connecting member 64 can be a threaded fastener or a rivet, etc., extending into the mounting portion 411, the supporting portion 421 and the first wall 111 along the direction from the outside of the first wall 111 to the inside of the first wall 111, so as to realize the connection between the connector 41, the adapter 42 and the first wall 111. In this way, the connector assembly 4 and the box assembly 1 can be assembled from the outside, thereby improving the convenience of assembly. Exemplarily, when the fourth connecting member 64 is a threaded fastener (such as a screw or a bolt), the first wall 111 can be provided with a threaded hole, or a nut or an external nut can be embedded to realize the connection. When the fourth connecting member 64 is a rivet, it can be connected by riveting or the like.

[0157] In addition, in the present application, when the scheme of connecting adapter 42 to connector 41 and first wall 111 separately or connecting connector 41, adapter 42 and first wall 111 together is not selected, a scheme of connecting adapter 42 to connector 41 and connecting connector 41 to first wall 111 can also be adopted, that is, connector 41 to adapter 42 and first wall 111 are separately connected.

[0158] For example, the adapter 42 may be first installed on the connector 41, and then the connector 41 may be installed on the first wall 111, which is conducive to the flexible installation of the adapter 42. It is worth noting that the adapter 42 and the connector 41 may be connected in any manner, for example, by a connector, or by snap-fitting, bonding, etc.

[0159] It should be noted that the wall thickness of the support portion 421 is not limited and can be specifically set according to the situation (i.e. the protruding position of the connector 41 relative to the box assembly 1). Fig.11 and Fig.12In the axial direction F of the first through hole 1111, the spacing W between the mounting portion 411 and the first wall 111 is greater than the wall thickness D of the mounting portion 411. In this way, since the spacing between the mounting portion 411 and the first wall 111 is relatively large, it cannot be solved by ordinary gaskets, which is more conducive to setting the adapter 42 considering the support strength and sealing requirements.

[0160] In some embodiments of the present application, Figure 3 As shown, the box assembly 1 includes a box body 11 of an integral stamping part, and the box body 11 includes a bottom wall 11a and a surrounding wall 11b, and a side wall of the surrounding wall 11b constitutes a first wall 111. For example, the box body 11 can be made of sheet metal and stamped into a basin shape to include the bottom wall 11a and the surrounding wall 11b. Therefore, since the bottom wall 11a and the surrounding wall 11b of the box body 11 are integrally stamped, there is no need to consider the sealing problem at the connection between the bottom wall 11a and the surrounding wall 11b, and the sealing effect can be ensured, thereby preventing muddy water from penetrating into the box body 11 from the connection between the bottom wall 11a and the surrounding wall 11b to affect the battery cell assembly 2, thereby improving the reliability of the battery 100. Moreover, the integrally stamped box body 11 does not need to be spliced, which can improve production efficiency. In addition, arranging the connector 41 on the side of the box body assembly 1, rather than the bottom or top surface, is conducive to reducing the difficulty of connecting the connector 41 with the plug-in structure on the electrical device.

[0161] In some embodiments of the present application, Figure 2 and Fig.21 As shown, the bottom wall 11 a of the box body 11 is provided with a heat exchange element 31 , and the heat exchange element 31 is arranged to exchange heat with the battery core assembly 2 in the box body 11 .

[0162] In this embodiment, the box body 11 is an integral stamped part and includes a bottom wall 11a and a surrounding wall 11b. The heat exchange element 31 is laid on the bottom wall 11a, for example, on the upper surface of the bottom wall 11a (for example, Figure 2 ), or laid on the lower surface of the bottom wall 11a (e.g. Fig.21 As shown in the embodiment, the heat exchange area between the heat exchange element 31 and the battery cell assembly 2 can be increased, thereby improving the temperature control effect of the battery cell assembly 2.

[0163] In some embodiments of the present application, Figure 21-23 As shown, the heat exchange element 31 includes at least one bent and extended heat exchange tube 312, and each heat exchange tube 312 defines a heat exchange channel 311. It can be seen that when the heat exchange element 31 includes a plurality of bent and extended heat exchange tubes 312, the heat exchange element 31 includes a plurality of heat exchange channels 311. Exemplarily, the heat exchange tube 312 can be made of aluminum or steel, such as aluminum, so that the overall weight of the battery 100 is lighter.

[0164] Exemplarily, the heat exchange tube 312 is bent in an arc shape at the bending position. The arc-shaped bend can reduce the flow resistance of the fluid and reduce the pressure drop. Furthermore, the heat exchange tube 312 is bent in an arc shape at the bending position, which can increase the flow rate of the heat exchange fluid in the heat exchange channel 311, thereby increasing the heat exchange efficiency of the heat exchange element 31.

[0165] Exemplarily, the heat exchange tube 312 is a flat tube structure. Fig.18 and Fig.23 The flat tube structure refers to a tube shape in which the width m is greater than the thickness n. Usually, the heat exchanger used in the battery is a double-layer brazed plate structure, that is, it is brazed by two layers of plates, and a heat exchange channel is formed between the two layers of plates. For example, the flat tube can be spliced ​​by extruding multiple sections of tubes, and the thickness of the flat tube can be much smaller than the thickness of the double-layer brazed plate structure, so that it can occupy a smaller space, increase the capacity of the battery 100, and reduce the weight, volume and cost of the battery 100.

[0166] In some embodiments of the present application, Fig.21 As shown, the box assembly 1 includes a bottom guard plate 14 located below the box 11, and the heat exchanger 31 is located outside the box 11 and between the bottom wall 11a of the box 11 and the bottom guard plate 14. Therefore, by placing the heat exchanger 31 outside the box 11, there is no need to consider the insulation problem between the heat exchanger 31 and the battery cell 11 in the box 11, thereby simplifying the insulation design of the heat exchanger 31, reducing the processing difficulty and production cost, solving the short circuit problem between the battery cell assembly 2 and the heat exchanger 31, and improving the reliability of the battery 100. Moreover, by placing the heat exchanger 31 outside the box 11, the heat exchanger 31 will not occupy the space in the box 11, so that the capacity of the battery 100 will not be reduced due to the installation of the heat exchanger 31, and the capacity of the battery 100 is better guaranteed. Furthermore, by arranging the heat exchanger 31 below the bottom wall 11a of the box body 11, the heat exchanger 31 can exchange heat with the battery cell assembly 2 in a larger range, thereby improving the temperature control effect and efficiency of the battery cell assembly 2. Furthermore, by arranging a bottom protective plate 14 below the heat exchanger 31, the heat exchanger 31 can be protected more reliably, reducing the risk of damage to the heat exchanger 31 due to collision and bump, thereby improving the working reliability of the heat exchanger 31.

[0167] In some embodiments of the present application, Fig.21 and Fig.23As shown, the heat exchanger 31 is connected to the current collector 32 through a connecting pipe 36 that penetrates the bottom wall 11a. Thus, by embedding the current collector 32 in the box 11, and placing the heat exchanger 31 outside the box 11, and providing a connecting pipe 36 that penetrates the box 11 to connect the current collector 32 and the heat exchanger 31, the connection between the current collector 32 and the heat exchanger 31 is facilitated, and the installation of the current collector 32 and the heat exchanger 31 is facilitated. In addition, the flow channel can be shortened, reducing the flow resistance of the heat exchange liquid. In addition, by embedding the current collector 32 in the box 11, there is no need to provide an external inlet and outlet liquid path that is connected to the heat exchanger 31 outside the box 11, so that there is no need to increase the sealing difficulty in order to meet the extension requirements of the external inlet and outlet liquid path, thereby reducing the sealing difficulty of the battery 100, simplifying the structure and cost of the battery 100, and improving the sealing reliability. In addition, the built-in current collector 32 is not easy to be damaged by collision, reducing the risk of leakage, improving the working stability and reliability of the heat exchange assembly 3, and improving the reliability of the battery 100 in transportation and vehicle use. Of course, the present application is not limited thereto. For example, in other embodiments of the present application, the heat exchange element 31 may also be configured to partially penetrate the bottom wall 11 a to be directly connected to the current collector 32 in the box body 11 .

[0168] In some embodiments of the present application, Fig.23 As shown, the connecting tube 36 is sleeved in the current collector 32, and a first seal 37 is sealed between the current collector 32 and the housing 11, and the first seal 37 is arranged around the matching surface of the current collector 32 and the connecting tube 36. In the above technical solution, by arranging the first seal 37 between the current collector 32 and the housing 11, and arranging the first seal 37 to surround the matching surface of the current collector 32 and the connecting tube 36, that is, the entire circumference of the connection between the connecting tube 36 and the current collector 32 can be sealed by the first seal 37, so that the risk of the heat exchange fluid overflowing from the matching point of the connecting tube 36 from the matching point of the current collector 32 and the housing 11 to overflow into the housing 11 can be reduced, thereby improving the reliability of the battery 100. Moreover, the setting position of the first seal 37 is clear, so that the first seal 37 is easy to assemble, thereby reducing the difficulty of assembly and design.

[0169] In some embodiments of the present application, Fig.23 As shown, the matching position of the current collector 32 and the connecting tube 36 is further provided with a second seal 38, and the second seal 38 is arranged around the connecting tube 36. In the above technical solution, by arranging the second seal 38 between the current collector 32 and the connecting tube 36, the risk of the heat exchange fluid overflowing from the matching position of the current collector 32 and the connecting tube 36 can be reduced, thereby improving the reliability of the battery 100. In addition, the setting position of the second seal 38 is clear, so that the second seal 38 is easy to assemble, thereby reducing the difficulty of assembly and design.

[0170] In some embodiments of the present application, Fig.21 and Fig.23 As shown, the box assembly 1 also includes: a seal 18, which is sealed between the bottom wall 11a and the bottom guard plate 14, and includes a peripheral portion 181 arranged around the heat exchanger 31, and the connecting pipe 36 corresponds to the inner ring area of ​​the peripheral portion 181 and passes through the bottom wall 11a.

[0171] Thus, by setting the position where the connecting pipe 36 passes through the bottom wall 11a in the area surrounded by the outer peripheral portion 181, when the outer peripheral portion 181 is sealed and fitted between the bottom wall 11a and the bottom guard plate 14, muddy water, particulate matter, etc. outside the box assembly 1 are not easy to pass through the outer peripheral portion 181 to enter between the bottom wall 11a and the bottom guard plate 14, and flow to the position where the connecting pipe 36 passes through the bottom wall 11a to enter the box 11, thereby improving the reliability of the battery 100. Moreover, since the outer peripheral portion 181 is arranged around the heat exchanger 31, muddy water, particulate matter, etc. outside the box assembly 1 are not easy to pass through the outer peripheral portion 181 to enter between the bottom wall 11a and the bottom guard plate 14, and pollute or corrode the heat exchanger 31 between the bottom wall 11a and the bottom guard plate 14, thereby improving the reliability and service life of the heat exchanger 31.

[0172] In some embodiments of the present application, Fig.21 and Fig.23 As shown, a bottom glue layer 19 is provided between the heat exchanger 31 and the bottom wall 11a and the bottom guard plate 14, respectively. That is, the side surface of the heat exchanger 31 facing the bottom wall 11a is fixedly connected to the bottom wall 11a through the bottom glue layer 19, and the side surface of the heat exchanger 31 facing the bottom guard plate 14 is also fixedly connected to the bottom guard plate 14 through the bottom glue layer 19. Therefore, on the one hand, the stability of heat transfer between the heat exchanger 31 and the bottom wall 11a can be improved, and on the other hand, the protectiveness of the two side surfaces of the heat exchanger 31 can be improved, thereby playing a role in protecting the heat exchanger 31. It is worth noting that the setting order of the bottom glue layer 19 is not limited, for example, it can be coated on both sides of the heat exchanger 31, or on the side of the bottom wall 11a facing the heat exchanger 31, or on the side of the bottom guard plate 14 facing the heat exchanger 31, etc. Exemplarily, the bottom glue layer 19 can be a structural adhesive, a high thermal conductivity double-sided adhesive, etc.

[0173] In some embodiments of the present application, Fig.21 and Fig.23 As shown, the heat exchange element 31 includes at least one bent and extended heat exchange tube 312, and the box assembly 1 also includes: a foam element 17, the foam element 17 is arranged between the bottom wall 11a and the bottom guard plate 14, and includes a first foaming portion 171 arranged around the heat exchange element 31, and a second foaming portion 172 arranged between adjacent tube sections of the same heat exchange tube 312 or between adjacent heat exchange tubes 312.

[0174] Therefore, the foam part 17 can be used to fill the space between the bottom wall 11a and the bottom guard plate 14 where the heat exchanger 31 is removed, that is, it is set complementary to the heat exchanger 31, so that the foam part 17 can support the bottom wall 11a and the bottom guard plate 14. When the protective plate 13 is impacted by a collision, the foam part 17 can buffer the impact force and reduce the force of the bottom guard plate 14 impacting the heat exchanger 31 or the box body 11, thereby protecting the heat exchanger 31 and the battery cell assembly 2 in the box body 11. Moreover, the foam part 17 can also fill the gap between the heat exchange tubes 312, and can support and limit the position of the heat exchange tubes 312, so that the heat exchange tubes 312 can be stably in the set position to achieve a stable temperature regulation effect.

[0175] In some embodiments of the present application, Fig.21 and Fig.23 As shown, the foaming member 17 is connected to the bottom guard plate 14, and the upper surface of the heat exchange member 31 is higher than the upper surface of the foaming member 17. That is, the side surface of the heat exchange member 31 facing the bottom wall 11a is arranged closer to the bottom wall 11a than the side surface of the foaming member 17 facing the bottom wall 11a. In this way, the molding difficulty of the foaming member 17 can be reduced, and it is helpful to control the thickness uniformity of the foaming member 17, so that the setting of the foaming member 17 will not interfere with the heat transfer coordination between the heat exchange member 31 and the bottom wall 11a, thereby improving the stability and reliability of the heat transfer between the heat exchange member 31 and the bottom wall 11a, which is beneficial to improving the temperature regulation effect of the battery cell assembly 2, and further improving the working reliability of the battery 100.

[0176] In addition, when a bottom glue layer 19 is provided between the heat exchange component 31 and the bottom wall 11a, the foam component 17 is provided to be connected to the bottom guard plate 14, which is beneficial to reducing the difficulty of providing the bottom glue layer 19 between the heat exchange component 31 and the bottom wall 11a, and is beneficial to improving the uniformity of the bottom glue layer 19 provided between the heat exchange component 31 and the bottom wall 11a, thereby improving the stability and reliability of heat transfer between the heat exchange component 31 and the bottom wall 11a, and is beneficial to improving the temperature regulation effect of the battery cell assembly 2, thereby improving the working reliability of the battery 100.

[0177] For example, the foamed part 17 can be processed on the bottom guard plate 14 through a mold by a foaming process, so as to ensure the uniformity of the thickness of the foamed part 17, and then glue is applied to the heat exchanger 31 or the bottom wall 11a, and then the heat exchanger 31 is installed between the protective plate 13 with the foamed part 17 and the bottom wall 11a. When the heat exchanger 31 protrudes toward the bottom wall 11a relative to the foamed part 17, the stability and reliability of the heat transfer cooperation between the heat exchanger 31 and the bottom wall 11a can be ensured.

[0178] In some other embodiments of the present application, the bottom guard plate 14, the box body 11 and the heat exchanger 31 may be assembled in place first, and then the foaming liquid may be injected between the bottom guard plate 14 and the bottom wall 11a of the box body 11 for foaming. At this time, the injection position of the foaming liquid needs to be considered to ensure uniform foaming height everywhere and avoid affecting the connection between the heat exchanger 31 and the box body 11. Alternatively, in some other embodiments of the present application, the foaming part 17 may be processed on the bottom wall 11a of the box body 11 by a mold through a foaming process, and then the heat exchanger 31 and the protective plate 13 may be assembled.

[0179] It is worth noting that the composition and material of the bottom guard plate 14 are not limited. For example, the bottom guard plate 14 can be a single-layer plate, such as a metal plate with an anti-corrosion layer on the outer surface. Alternatively, the bottom guard plate 14 can also be composed of a combination of multiple layers, for example, a combination of Fig.21 The bottom guard plate 14 includes a first guard plate 141 and a second guard plate 142. The second guard plate 142 is located below the first guard plate 141. The first guard plate 141 can be made of metal, and the second guard plate 142 can be made of corrosion-resistant material, such as PVC (polyvinyl chloride).

[0180] In some embodiments of the present application, Fig. 22 and Fig.24 As shown, the heat exchange element 31 includes at least one first heat exchange channel 3110. For example, the heat exchange channel 311 defined in at least one heat exchange tube 312 is the first heat exchange channel 3110.

[0181] Among them, the first heat exchange channel 3110 may include a first heat exchange section 3111, a second heat exchange section 3112 and a third heat exchange section 3113. The second heat exchange section 3112 is bent to form a first U-shaped area Z1. The first heat exchange section 3111 is bent and arranged in the first U-shaped area Z1. The first heat exchange section 3111 and the second heat exchange section 3112 are bent and connected through the third heat exchange section 3113. The second heat exchange section 3112 is located at the outermost side of the circumference of the heat exchange channel 311.

[0182] Since the battery cells 21 arranged on the periphery are closer to the side walls of the box assembly 1 than the internal battery cells 21, the battery cells 21 on the periphery can dissipate heat to the outside more easily through the side walls and other structures of the box assembly 1, while it is more difficult for the battery cells 21 inside to dissipate heat and they are greatly affected by the heat dissipation of the adjacent battery cells 21. Thus, the heat dissipation conditions of the battery cells 21 at different positions are different, resulting in a relatively uneven temperature distribution between the peripheral battery cells 21 and the internal battery cells 21 in the battery 100 after operation. This makes the battery 100 less stable during operation and the battery performance is prone to attenuation.

[0183] In view of this, in the above technical solution, the second heat exchange section 3112 is bent to form a first U-shaped area Z1, and the first heat exchange section 3111 is bent and arranged in the first U-shaped area Z1, and the second heat exchange section 3112 is arranged to be located at the outermost side of the first heat exchange channel 3110 in the circumferential direction. When the heat exchange element 31 of this embodiment is used to exchange heat with the battery core assembly 2, at least a part of the first U-shaped area Z1 formed by the outer second heat exchange section 3112 can be opposite to the outer battery cell 21 of the battery 100, so that the second heat exchange section 3112 can Heat exchange is performed on the outer circumference of the battery cell assembly 2, and the first heat exchange section 3111 in the first U-shaped area Z1 is opposite to the internal battery cell 21, so that the heat exchange component 31 can compensate for the internal and external temperature difference caused by the heat exchange between at least part of the battery cells 21 on the periphery and the environment, so that the heat exchange effect of the battery cells 21 on the periphery of the battery cell assembly 2 and the battery cells 21 inside the battery cell assembly 2 are consistent, which is beneficial to improving the temperature difference of the battery cell assembly 2 in different environments and improving the temperature uniformity of the battery 100, thereby improving the service life of the battery 100 to a certain extent.

[0184] Exemplarily, when the heat exchange element 31 heats the battery cell assembly 2, the heat exchange fluid may also flow from the first heat exchange section 3111 to the second heat exchange section 3112, but the heat exchange fluid may also flow from the second heat exchange section 3112 to the first heat exchange section 3111. Exemplarily, when the heat exchange fluid flows from the second heat exchange section 3112 to the first heat exchange section 3111, the battery cells 21 at the periphery of the battery cell assembly 2 may be heated first, and then the heat exchange fluid may cool the battery cells 21 at the middle of the battery cell assembly 2. Since the battery cells 21 at the periphery of the battery 100 dissipate more heat to the external environment, the temperature of the battery cells 21 at the periphery of the battery 100 is more likely to drop. The heat exchange fluid first heats the battery cells 21 at the periphery of the battery 100. The higher temperature heat exchange fluid may increase the temperature of the battery cells 21 at the periphery while compensating for the heat lost by the battery cells 21 due to heat dissipation to the external environment. , to meet its heating needs, the battery cell 21 in the middle of the battery cell assembly 2 has a small contact area with the external environment and a small heat loss. The lower temperature heat exchange fluid flowing in the first heat exchange section 3111 can cooperate with the heat generated by the battery cell 21 itself to well meet its heating needs. As a result, the heating effects obtained by the battery cells 21 at the periphery of the battery 100 and the battery cells 21 at the middle of the battery cell assembly 2 are basically the same, and the temperatures of the battery cells 21 at the periphery of the battery 100 and the battery cells 21 at the middle of the battery cell assembly 2 after heating are relatively consistent, making the temperature distribution in the battery 100 more uniform.

[0185] For example, in the present embodiment, when the heat exchange element 31 is cooling the battery cell assembly 2, the heat exchange fluid may also flow from the first heat exchange section 3111 to the second heat exchange section 3112, but the heat exchange fluid may also flow from the second heat exchange section 3112 to the first heat exchange section 3111. When the heat exchange fluid also flows from the first heat exchange section 3111 to the second heat exchange section 3112, the battery cells 21 in the middle of the battery 100 (i.e., the internal battery cells 21 on the inner side of the periphery) may be cooled first, and then the battery cells 21 at the peripheral edge of the battery 100 may be cooled. Since the heat dissipation of the battery cells 21 at the peripheral edge of the battery 100 is better than that of the internal battery cells 21, the heat exchange fluid with a lower temperature in the first heat exchange section 3111 may better meet the heat dissipation requirements of the battery cells 21 at the middle of the battery 100, and at the same time Since the battery cells 21 at the peripheral position can dissipate heat naturally directly to the external environment, when the temperature of the heat exchange fluid in the second heat exchange section 3112 is slightly higher, it can still meet the heat dissipation needs of the peripheral battery cells 21, so that the cooling effects obtained by the battery cells 21 at the peripheral position of the battery 100 and the battery cells 21 at the middle position of the battery 100 are roughly the same, and then the temperatures of the battery cells 21 at the peripheral position of the battery 100 and the battery cells 21 at the middle position of the battery 100 after cooling and heat dissipation are relatively consistent, making the temperature distribution in the battery 100 more uniform.

[0186] In some embodiments of the present application, Figure 2 and Fig.24 As shown, the battery cell assembly 2 includes a plurality of battery cells 20 arranged along a first direction X, each battery cell 20 includes a plurality of battery cells 21 stacked in sequence along a second direction Y, and at least a portion of the second heat exchange section 3112 exchanges heat with the plurality of battery cells 21 located at the outermost circumference of the battery cell assembly 2.

[0187] In the above technical solution, by coordinating the arrangement of the battery cells 21 and the extended arrangement of the first heat exchange channel 3110, and setting at least a portion of the second heat exchange section 3112 to exchange heat with the peripheral battery cells 21, for example, heat transfer can be achieved, so that the heat exchange efficiency of the peripheral battery cells 21 can be improved, and the temperature difference caused by the heat dissipation of the peripheral battery cells 21 in the battery 100 being greater than the heat dissipation of the inner battery cells 21 can be further balanced.

[0188] In some embodiments, in combination Fig.24 and Fig.25The second heat exchange section 3112 includes a first section R1, a second section R2 and a third section R3 which are bent and connected in sequence to form a first U-shaped area Z1. The first section R1 and the third section R3 both extend along the second direction Y, and the second section R2 extends along the first direction X. In the above technical solution, the coverage of the first U-shaped area Z1 can be relatively wide, which is conducive to heat exchange of the peripheral battery cells 21 of the battery core assembly 2, and further improves the temperature uniformity of the battery 100.

[0189] In some embodiments, in combination Fig.24 and Fig.25 The second heat exchange section 3112 also includes a fourth section R4 connected to the first section R1 by bending. The fourth section R4 and the second section R2 are disposed on both sides of the first section R1 along the second direction Y. The fourth section R4 extends in the first direction X toward the direction close to the third section R3. Thus, the fourth section R4 can block at least part of the opening of the first U-shaped area Z1, so that the second heat exchange section 3112 located at the periphery of the first heat exchange channel 3110 can exchange heat with the battery cells 21 at the periphery of the battery core assembly 2 in a larger range, further improving the temperature uniformity of the battery 100.

[0190] In some embodiments, in combination Fig.25 and Fig.26 The heat exchange element 31 further includes at least one second heat exchange channel 3114, and the second heat exchange channel 3114 and the first heat exchange channel 3110 are bent in the same plane, and the second heat exchange channel 3114 is bent in the first U-shaped area Z1.

[0191] For example Fig.25 The embodiment shows one way of matching a first heat exchange channel 3110 and a second heat exchange channel 3114, for example Fig.26 The embodiment shows one way of matching a first heat exchange channel 3110 and two second heat exchange channels 3114.

[0192] In the above technical solution, by setting at least one first heat exchange channel 3110 and at least one second heat exchange channel 3114, and by coordinating the relative position relationship between the two, the arrangement of the heat exchange channels can be flexibly designed according to the cooling requirements of the battery 100, thereby further optimizing the temperature regulation effect of the battery cell assembly and improving the temperature uniformity of the battery 100.

[0193] In some embodiments, in combination Fig.26 At least one second heat exchange channel 3114 is bent to form a second U-shaped area Z2, and at least a portion of the first heat exchange section 3111 is disposed in the second U-shaped area Z2 of the second heat exchange channel 3114.

[0194] For example Fig.26It is shown that one of the second heat exchange channels 3114 is bent to form a second U-shaped area Z2, at least a portion of the first heat exchange section 3111 is disposed in the second U-shaped area Z2 of the second heat exchange channel 3114, and another second heat exchange channel 3114 is also disposed in the second U-shaped area Z2 of the second heat exchange channel 3114.

[0195] In the above technical solution, at least one second heat exchange channel 3114 is bent to form a second U-shaped area Z2, and at least a portion of the first heat exchange section 3111 is disposed in the second U-shaped area Z2 of the second heat exchange channel 3114, which is beneficial to the coordinated cooperation between the first heat exchange channel 3110 and the second heat exchange channel 3114, so as to further improve the temperature uniformity of the battery 100.

[0196] In some embodiments of the present application, Fig.18 and Fig.19 As shown, the box assembly 1 includes a box 11, the battery 100 includes a cell assembly 2 arranged in the box 11, the cell assembly 2 includes a plurality of battery cells 21, and the battery 100 includes a thermostat 7, the thermostat 7 includes at least one of a first thermostat 71, a second thermostat 72, and a third thermostat 73. The first thermostat 71 is arranged outside the box 11 and is in contact with the outer wall of the box 11. The second thermostat 72 is arranged in the box 11 and is located between the cell assembly 2 and the box assembly 1. The third thermostat 73 is arranged in the box 11 and is located between adjacent battery cells 21.

[0197] For example, the battery 100 may include only one of the first temperature regulating member 71, the second temperature regulating member 72 and the third temperature regulating member 73, or may include two of the first temperature regulating member 71, the second temperature regulating member 72 and the third temperature regulating member 73 at the same time, or may include all three of the first temperature regulating member 71, the second temperature regulating member 72 and the third temperature regulating member 73 at the same time. Therefore, the temperature regulating member 7 may be set at a suitable position according to actual conditions to meet the temperature regulation requirements of the battery 100.

[0198] The specific location of the first temperature regulating member 71 outside the box body 11 is not limited, for example, Fig.18 At least part of the first temperature regulating member 71 can be disposed below the bottom wall 11a of the box body 11, so as to exchange heat with the battery cell assembly 2 in a wider range, thereby improving the temperature regulating effect on the battery cell assembly 2. For another example, at least part of the first temperature regulating member 71 can also be disposed outside the surrounding wall 11b of the box body 11, etc.

[0199] For example, Fig.18As shown, the box assembly 1 may further include a bottom guard plate 14 located below the bottom wall 11a of the box 11 to protect the box 11 from bumps and other effects. At this time, if a first temperature control component 71 is provided below the bottom wall 11a of the box 11, the first temperature control component 71 may be located between the bottom guard plate 14 and the bottom wall 11a of the box 11, so that the bottom guard plate 14 may also protect the first temperature control component 71.

[0200] The specific location of the second temperature regulating member 72 in the box assembly 1 is not limited, for example, Fig.18 , at least part of the second temperature regulating member 72 can be disposed above the bottom wall 11a of the box body 11, so as to be sandwiched between the bottom wall 11a of the box body 11 and the bottom of the battery cell assembly 2, so as to be able to exchange heat with the battery cell assembly 2 in a wider range, thereby improving the temperature regulating effect on the battery cell assembly 2. For another example, at least part of the second temperature regulating member 72 can be disposed below the box cover 12, so as to be sandwiched between the box cover 12 and the top of the battery cell assembly 2, so as to be able to exchange heat with the battery cell assembly 2 in a wider range, thereby improving the temperature regulating effect on the battery cell assembly 2.

[0201] The specific location of the third temperature regulating member 73 in the box assembly 1 is not limited, for example, Fig.19 The adjacent battery cells 21 in the battery cell assembly 2 may have their large surfaces facing each other, and the third temperature regulating member 73 may be arranged between the large surfaces of the adjacent battery cells 21 , so as to enhance the temperature regulating effect on the battery cells 21 .

[0202] For example, in combination Fig.18 The temperature regulating element 7 may be a flat tube structure, that is, the temperature regulating element 7 is formed in the form of a flat tube with a width m greater than a thickness n. A flow channel may be formed in the flat tube. A heat exchange liquid may be introduced into the flow channel to exchange heat with the battery cell assembly 2, thereby achieving a temperature regulating effect on the battery 100.

[0203] The heat exchanger usually used in the battery is a double-layer brazed plate structure, that is, it is made of two layers of plate brazed together to form a heat exchange channel between the two layers of plate. For example, the flat tube can be spliced ​​together by multiple sections of extruded tubes. The thickness of the flat tube can be much smaller than the thickness of the double-layer brazed plate structure, so that it can occupy a smaller space and increase the capacity of the battery.

[0204] In addition, the thermal management system of the battery 100 is not limited to only including the above-mentioned temperature regulating element 7. For example, in some embodiments, the thermal management system of the battery 100 is combined with Fig. 20 The box assembly 1 may further include an expansion beam 13 disposed in the box 11. For example, there may be multiple expansion beams 13. The battery cell assembly 2 is sandwiched between the multiple expansion beams 13. For example, it may include a first expansion beam 131 and a second expansion beam 132. The battery cell assembly 2 is sandwiched between the first expansion beam 131 and the second expansion beam 132. A heat exchange flow channel may be set in the expansion beam 13 for temperature adjustment, thereby constituting a part of the thermal management system.

[0205] According to the third aspect of the present application, the present application also provides an electric device, including the battery 100 of any of the above solutions, and the battery 100 is used to provide power to the electric device. The electric device can be any of the above-mentioned devices or systems using the battery 100. Since the performance of the battery 100 is improved, it is beneficial to improve the working power performance of the electric device.

[0206] The following describes a battery 100 according to three specific embodiments of the present application.

[0207] Embodiment 1

[0208] Combination Figure 2-Figure 9 The battery 100 includes: a box assembly 1, a battery cell assembly 2 and a connector assembly 4, wherein the box assembly 1 includes: a box body 11, a box cover 12 and a bottom guard plate 14, the box body 11 is an integral stamped part and includes a bottom wall 11a and a surrounding wall 11b to form a stamped box shape with an open top, the battery cell assembly 2 is arranged in the box body 11, the connector assembly 4 is installed on the surrounding wall 11b and is electrically connected to the battery cell assembly 2, the box cover 12 is arranged on the top of the box body 11, and the bottom guard plate 14 is arranged below the bottom wall 11a to protect the box body 11.

[0209] Combination Fig. 20 , a first expansion beam 131 is provided in the box body 11, and the first expansion beam 131 extends along the first direction X. The two opposite side walls of the surrounding wall 11b in the second direction Y are respectively the first wall 111 and the second wall 112. The space between the first expansion beam 131 and the first wall 111 in the box body 11 is the first space 113, and the space between the first expansion beam 131 and the second wall 112 in the box body 11 is the second space 114. The battery cell assembly 2 is provided in the second space 114 and abuts against the first expansion beam 131. The first space 113 is used to install high-voltage electrical appliances, etc. It is worth noting that the first direction X and the second direction Y are perpendicular, and one of them is the length direction of the box body 11, and the other is the width direction of the box body 11. The height direction of the box body 11 is the third direction Z, which is perpendicular to the first direction X and the second direction Y, that is, the spacing direction between the bottom wall 11a of the box body 11 and the box cover 12.

[0210] The first wall 111 has a first through hole 1111. The connector assembly 4 includes a connector 41 and an adapter 42. The connector 41 includes a mounting portion 411 and an electrical connection portion 412. The mounting portion 411 is located outside the first wall 111. The electrical connection portion 412 includes an external electrical terminal 4121 located on a side of the mounting portion 411 away from the first wall 111, and an internal electrical terminal 4122 located on a side of the mounting portion 411 close to the inside of the box assembly 1. The internal electrical terminal 4122 is arranged corresponding to the first through hole 1111. The adapter 42 is located outside the box assembly 1 and includes a supporting portion 421 and a connecting portion 422. The supporting portion 421 is arranged between the first wall 111 and the mounting portion 411 to support the mounting portion 411 so that the mounting portion 411 is spaced apart from the first wall 111. The connecting portion 422 is located outside the supporting portion 421 and connected to the first wall 111.

[0211] The support portion 421 includes an end plate portion 4213 and a surrounding plate portion 4214. The surrounding plate portion 4214 is arranged around the first through hole 1111. The end plate portion 4213 is connected to one end of the surrounding plate portion 4214 away from the first wall 111. The mounting portion 411 is supported on the side of the end plate portion 4213 away from the first wall 111. A second through hole 4211 is formed on the end plate portion 4213. A avoidance cavity 4215 opened toward the first wall 111 is formed between the end plate portion 4213 and the surrounding plate portion 4214. The second through hole 4211 is arranged corresponding to the first through hole 1111. The avoidance cavity 4215 communicates with the first through hole 1111 and the second through hole 4211. The power connection portion 412 is arranged through the second through hole 4211. A first sealing member 51 is arranged between the surrounding plate portion 4214 and the first wall 111. The first sealing member 51 is arranged around the first through hole 1111. A second sealing member 52 is disposed between the supporting portion 421 and the mounting portion 411 . The second sealing member 52 is disposed around the second through hole 4211 .

[0212] The mounting portion 411 is connected to the supporting portion 421 through a first connecting member 61, the first connecting member 61 includes a first rod portion 611 and a first head portion 612, the first head portion 612 abuts against a side of the mounting portion 411 away from the supporting portion 421, the first rod portion 611 penetrates the mounting portion 411 and is connected to the supporting portion 421. The adapter 42 also includes a connecting portion 422, the connecting portion 422 is located at the periphery of the supporting portion 421 and exceeds the coverage range of the mounting portion 411, and the connecting portion 422 is connected to the first wall 111. The connecting portion 422 is connected to the first wall 111 through a second connecting member 62, the second connecting member 62 includes a second rod portion 621 and a second head portion 622, the second head portion 622 abuts against a side of the connecting portion 422 away from the first wall 111, the second rod portion 621 penetrates the connecting portion 422 and is connected to the first wall 111.

[0213] Exemplarily, during assembly, the adapter 42 is first set on the outside of the box assembly 1, and then the second connecting member 62 (such as a screw) can be driven in from the outside to the inside to first fix the adapter 42 on the box assembly 1, and then the connector 41 is fitted on the outside of the adapter 42, and then the first connecting member 61 (such as a screw) is driven in from the outside to the inside to fix the connector 41 on the adapter 42, thereby completing the installation of the connector assembly 4.

[0214] Embodiment 2

[0215] The form of the adapter 42 in the second embodiment is different from that in the first embodiment, and the connection method with the connector 41 and the box assembly 1 is different. Figure 10-13 The adapter 42 includes a supporting portion 421 but does not include a connecting portion 422. A through hole 4216 is provided on the supporting portion 421. The through hole 4216 corresponds to the first through hole 1111 and an opening formed on the side surface of the supporting portion 421 away from the first wall 111 constitutes a second through hole 4211. This simplifies the structure of the adapter 42, facilitates the processing of the adapter 42, and helps to improve the supporting strength of the adapter 42.

[0216] The mounting portion 411 is connected to the support portion 421 through a first connecting member 61, the first connecting member 61 includes a first rod portion 611 and a first head portion 612, the first head portion 612 abuts against a side of the mounting portion 411 away from the support portion 421, the first rod portion 611 penetrates the mounting portion 411 and is connected to the support portion 421, and the support portion 421 is connected to the first wall 111 through a third connecting member 63, the third connecting member 63 includes a third rod portion 631 and a third head portion 632, the third head portion 632 abuts against the inner side of the first wall 111, the third rod portion 631 penetrates the first wall 111 and is connected to the support portion 421. The positions of the first connecting member 61 and the third connecting member 63 are staggered.

[0217] For example, during assembly, the adapter 42 is first arranged outside the box assembly 1, and then the third connection member 63 (such as a screw) can be driven in from the inside to the outside to first fix the adapter 42 on the box assembly 1, and then the connector 41 is fitted on the outside of the adapter 42, and then the first connection member 61 (such as a screw) is driven in from the outside to the inside to fix the connector 41 on the adapter 42, thereby completing the installation of the plug-in assembly 4. In this way, the space occupied by the adapter 42 can be reduced, and the adapter 42 can be connected to the box assembly 1 separately, and the adapter 42 can be connected to the connector 41 separately, thereby improving the assembly efficiency of the plug-in assembly 4.

[0218] Embodiment 3

[0219] The form of the adapter 42 in the third embodiment is different from that in the first embodiment, and the connection method with the connector 41 and the box assembly 1 is different. Figure 14-17 The adapter 42 includes a support portion 421 but does not include a connection portion 422. A through hole 4216 is provided on the support portion 421. The through hole 4216 corresponds to the first through hole 1111. The hole formed on the surface of the support portion 421 on the side away from the first wall 111 constitutes a second through hole 4211. This simplifies the structure of the adapter 42, facilitates the processing of the adapter 42, and helps to improve the support strength of the adapter 42. The connector 41, the adapter 42 and the first wall 111 are connected together through the fourth connection member 64. The fourth connection member 64 includes a fourth rod portion 641 and a fourth head portion 642. The fourth head portion 642 abuts against the side of the mounting portion 411 away from the adapter 42. The fourth rod portion 641 penetrates the mounting portion 411 and the adapter 42 and is connected to the first wall 111.

[0220] Exemplarily, during assembly, the adapter 42 is first set on the outside of the box assembly 1, and the connector 41 is fitted on the outside of the adapter 42, and then the fourth connecting member 64 (such as a screw) can be driven from the outside to the inside to fix the connector 41 and the adapter 42 to the box assembly 1 together, thereby achieving the installation and fixation of the connector assembly 4 and reducing the space occupied by the adapter 42.

[0221] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0222] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: The box assembly includes a first wall, wherein the first wall has a first through hole; and A plug-in assembly is installed on the box assembly and includes a connector and an adapter, the connector includes a mounting portion and an electrical connection portion, the mounting portion is located on the outside of the first wall, the electrical connection portion includes an external electrical terminal located on a side of the mounting portion away from the first wall, and an internal electrical terminal located on a side of the mounting portion close to the inside of the box assembly, the internal electrical terminal is arranged corresponding to the first through-hole, at least a portion of the adapter is located outside the box assembly, and supports the mounting portion so that the mounting portion is spaced apart from the first wall.

2. The battery according to claim 1, characterized in that The adapter comprises a supporting portion, and the supporting portion is arranged between the first wall and the mounting portion to support the mounting portion.

3. The battery according to claim 2, characterized in that The supporting portion is disposed around the first through hole, and a second through hole corresponding to the first through hole is opened on the supporting portion, and the power connection portion is penetrated through the second through hole.

4. The battery according to claim 3, characterized in that A first sealing member is disposed between the supporting portion and the first wall, and the first sealing member is disposed around the first through hole.

5. The battery according to claim 4, characterized in that The end surface of the support portion facing the first wall has an annular groove, and the first sealing member is embedded in the groove.

6. The battery according to claim 3, characterized in that A second sealing member is disposed between the supporting portion and the mounting portion, and the second sealing member is disposed around the second through hole.

7. The battery according to claim 3, characterized in that The supporting portion includes an end plate portion and a surrounding plate portion, the surrounding plate portion is arranged around the first through-hole, the end plate portion is connected to an end of the surrounding plate portion away from the first wall, the mounting portion is supported on a side of the end plate portion away from the first wall, the second through-hole passes through the end plate portion, and an avoidance cavity open toward the direction of the first wall is formed between the end plate portion and the surrounding plate portion, the avoidance cavity connects the first through-hole and the second through-hole, and the cross-sectional area of ​​the avoidance cavity is greater than the cross-sectional area of ​​the second through-hole.

8. The battery according to claim 7, characterized in that The enclosure portion includes a first enclosure section and a second enclosure section which are arranged in sequence from the end plate portion to the first wall. The wall thickness of the first enclosure section gradually decreases along the direction from the end plate portion to the first wall, and the wall thickness of the second enclosure section is greater than the wall thickness of the end portion of the first enclosure section close to the first wall.

9. The battery according to claim 3, characterized in that The support portion is provided with a through hole, the through hole is provided corresponding to the first through hole, and an opening formed by the through hole on a side surface of the support portion away from the first wall constitutes the second through hole.

10. The battery according to claim 1, characterized in that The adapter is entirely located outside the first wall.

11. The battery according to claim 1, characterized in that The connector is connected to the adapter, and the adapter is connected to the first wall.

12. The battery according to claim 11, characterized in that The adapter comprises a supporting portion, the supporting portion is arranged between the first wall and the mounting portion to support the mounting portion, and the mounting portion is connected to the supporting portion.

13. The battery according to claim 12, characterized in that The mounting portion is connected to the supporting portion via a first connecting member, which includes a first rod portion and a first head portion, wherein the first head portion abuts against a side of the mounting portion away from the supporting portion, and the first rod portion penetrates the mounting portion and is connected to the supporting portion.

14. The battery according to claim 12, characterized in that The adapter also includes a connecting portion, which is located at the periphery of the supporting portion and exceeds the coverage range of the mounting portion, and the connecting portion is connected to the first wall.

15. The battery according to claim 14, characterized in that The connecting portion is connected to the first wall via a second connecting member, the second connecting member includes a second rod portion and a second head portion, the second head portion abuts against a side of the connecting portion away from the first wall, and the second rod portion passes through the connecting portion and is connected to the first wall.

16. The battery according to claim 14, characterized in that The adapter also includes a reinforcing oblique rib connected between the supporting portion and the connecting portion.

17. The battery according to claim 12, characterized in that The support portion is connected to the first wall via a third connecting member, the third connecting member includes a third rod portion and a third head portion, the third head portion abuts against the inner side of the first wall, and the third rod portion penetrates the first wall and is connected to the support portion.

18. The battery according to claim 17, characterized in that A connection position between the support portion and the mounting portion is staggered from a connection position between the support portion and the first wall.

19. The battery according to claim 1, characterized in that The connector, the adapter and the first wall are connected together via a fourth connecting member.

20. The battery according to claim 19, characterized in that The fourth connecting member includes a fourth rod portion and a fourth head portion, the fourth head portion abuts against a side of the mounting portion away from the adapter, and the fourth rod portion penetrates the mounting portion and the adapter and is connected to the first wall.

21. The battery according to claim 1, characterized in that In the axial direction of the first through hole, the spacing distance between the mounting portion and the first wall is greater than the wall thickness of the mounting portion.

22. The battery according to claim 1, characterized in that The box assembly includes a box, the battery includes a cell assembly disposed in the box, the cell assembly includes a plurality of battery cells, the battery includes a temperature regulating member, the temperature regulating member includes at least one of a first temperature regulating member, a second temperature regulating member and a third temperature regulating member, The first temperature regulating component is arranged outside the box and is in contact with the outer wall of the box; The second temperature regulating member is disposed in the box body and between the battery cell assembly and the box body assembly; The third temperature regulating component is arranged in the box body and located between adjacent battery cells.

23. The battery according to any one of claims 1 to 22, characterized in that The box assembly includes a box body that is an integral stamped part, and the box body includes a bottom wall and a surrounding wall, and a side wall of the surrounding wall constitutes the first wall.

24. The battery according to claim 23, characterized in that The box body is provided with a battery core assembly, and the bottom wall of the box body is paved with a heat exchange component, and the heat exchange component is arranged for heat exchange with the battery core assembly.

25. The battery according to claim 24, characterized in that The heat exchange element includes at least one first heat exchange channel, the first heat exchange channel includes a first heat exchange section, a second heat exchange section and a third heat exchange section, the second heat exchange section is bent to form a first U-shaped area, the first heat exchange section is bent and arranged in the first U-shaped area, and is connected to the second heat exchange section by bending the third heat exchange section, and the second heat exchange section is located at the outermost side of the first heat exchange channel in the circumferential direction.

26. The battery according to claim 25, characterized in that The battery cell assembly includes a plurality of battery units arranged along a first direction, each of the battery units includes a plurality of battery cells stacked in sequence along a second direction, and at least a portion of the second heat exchange section exchanges heat with the plurality of battery cells located at the outermost circumference of the battery cell assembly.

27. The battery according to claim 25, characterized in that The heat exchange element further includes at least one second heat exchange channel, and the second heat exchange channel and the first heat exchange channel are bent in the same plane, and the second heat exchange channel is bent in the first U-shaped region of the first heat exchange channel.

28. The battery according to claim 27, characterized in that At least one of the second heat exchange channels is bent to form a second U-shaped region, and at least a portion of the first heat exchange section is disposed in the second U-shaped region of the second heat exchange channel.

29. The battery according to claim 24, characterized in that The heat exchange element comprises at least one bent and extended heat exchange tube, each of the heat exchange tubes defines a heat exchange channel, and the heat exchange tubes are flat tube structures.

30. An electrical device, characterized in that: Comprising a battery according to any one of claims 1-29.

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