Battery and electric device

Abstract

The application provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box assembly, a battery cell assembly and a heat exchange assembly. The box assembly comprises a box. The battery cell assembly is arranged in the box and comprises a plurality of battery monomers. The heat exchange assembly comprises a heat exchange element, an adapter and a connecting pipe. The heat exchange element is arranged outside the box and defines a first flow channel. The adapter is arranged in the box and defines a second flow channel. The connecting pipe penetrates the box and is in communication with the first flow channel and the second flow channel. The battery monomer is beneficial to improving the reliability and manufacturability of the battery.

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 experienced rapid development. Batteries, as the power source of electric vehicles, play an irreplaceable and important role. However, battery reliability and manufacturability need to be improved. Summary of the Invention

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

[0004] In a first aspect, an embodiment of the present application provides a battery, comprising: a case assembly, a battery cell assembly and a heat exchange assembly, the case assembly comprising a case, the battery cell assembly being arranged in the case and comprising a plurality of battery cells, the heat exchange assembly comprising a heat exchange member, an adapter and a connecting pipe, the heat exchange member being arranged outside the case and defining a first flow channel, the adapter being arranged in the case and defining a second flow channel, the connecting pipe passing through the case and connecting the first flow channel and the second flow channel.

[0005] In the above technical solution, by placing the heat exchanger outside the housing, there is no need to consider the insulation problem between the heat exchanger and the battery cells inside the housing, thereby simplifying the insulation design of the heat exchanger, reducing the processing difficulty and production cost, improving the manufacturability of the battery, solving the short circuit problem between the battery cells and the heat exchanger, and improving the reliability of the battery. Moreover, by placing the heat exchanger outside the housing, the heat exchanger does not occupy space inside the housing, so that the battery capacity is not reduced due to the installation of the heat exchanger, and the battery capacity is better guaranteed. Moreover, by arranging the adapter inside the housing and providing a connecting pipe that passes through the housing to connect the adapter with the heat exchanger outside the housing, the heat exchanger can realize the introduction and discharge of fluid through the adapter inside the housing. In this way, by internally placing the adapter inside the housing, there is no need to provide an external inlet and outlet liquid path outside the housing that is connected to the heat exchanger, thereby eliminating the need to increase the sealing difficulty to meet the extension requirement of the external inlet and outlet liquid path, thereby reducing the sealing difficulty of the battery, simplifying the structure and cost of the battery, and improving the sealing reliability.

[0006] In some embodiments, the adapter includes a flange portion and a joint portion, the joint portion defines a second flow channel and is connected to the connecting pipe, the flange portion is connected to the outer periphery of the joint portion and abuts against the inner wall of the box body, and the adapter is fixedly connected to the box body through the flange portion.

[0007] In the above technical solution, an adapter is provided including a flange portion and a joint portion, the flange portion is located at the periphery of the joint portion, wherein the flange portion is fixedly connected to the box body, and the joint portion is connected to the connecting pipe, so that the connection position of the adapter and the box body can be located in the peripheral area of ​​the connection position of the adapter and the connecting pipe. In this way, on the one hand, the connection position of the adapter and the box body and the connection position of the adapter and the connecting pipe do not interfere with each other, thereby facilitating the installation and fixation of the adapter and the box body, and also facilitating the connection of the adapter and the connecting pipe. On the other hand, the connection between the adapter and the box body is performed at the periphery of the connection position between the adapter and the connecting pipe, which is beneficial to utilizing the connection between the adapter and the box body to improve the connection reliability and stability of the adapter and the connecting pipe.

[0008] In some embodiments, the flange portion includes a flange plate and an embedded component provided on the flange plate, and the flange portion is connected to the box body through a connecting piece passing through the embedded component.

[0009] In the above technical solution, by arranging an embedded part on the flange and using the embedded part to penetrate the connecting part to realize the connection between the flange part and the box body, the material requirements for the flange can be reduced. For example, the flange can be made of plastic or metal, which is conducive to improving the flexibility of the design.

[0010] In some embodiments, a first sealing member is provided between the flange portion and the box body for sealing, and the first sealing member is disposed around a mating surface between the joint portion and the connecting pipe.

[0011] In the above technical solution, a first seal is provided between the flange and the housing, and the first seal is arranged to surround the mating surface between the joint and the connecting tube. This means that the entire circumference of the connecting tube and the joint is sealed by the first seal. This reduces the risk of heat exchange fluid escaping from the mating point of the connecting tube into the housing through the mating point between the adapter and the housing, thereby improving battery reliability. Furthermore, the clear placement of the first seal facilitates assembly, thereby reducing assembly and design complexity.

[0012] In some embodiments, the flange portion has a first annular groove, and the first sealing component is a first sealing ring embedded in the first annular groove.

[0013] In the above-described technical solution, the first seal has a simple structure and is easy to manufacture. By embedding the first seal in the first annular groove, the installation stability of the first seal can be improved, allowing the first seal to reliably seal between the flange portion and the housing, and surround the mating surface between the joint portion and the connecting pipe, further reducing the risk of heat exchange fluid overflowing from the connecting pipe mating point and overflowing into the housing through the mating point between the adapter and the housing, thereby further improving the reliability of the battery. In addition, the flange portion can be easily machined to be thicker than the thickness of the housing, which facilitates increasing the groove depth of the first annular groove, improving the mating stability of the first seal and the first annular groove, further improving the installation stability of the first seal, and thus further improving the sealing effect of the first seal.

[0014] In some embodiments, the connecting pipe is inserted into the joint portion.

[0015] In the above technical solution, the connecting pipe is inserted into the joint part, which can realize direct socketing of the connecting pipe and the joint part, thereby eliminating other connecting parts, improving the compactness of the fit, and easily realizing the assembly connection between the connecting pipe and the adapter, reducing the structural complexity of the joint part, and facilitating the processing of the adapter.

[0016] In some embodiments, the joint portion includes an inserting section and a connecting section. The joint portion is in the form of an elbow and is bent at the connection between the inserting section and the connecting section. The connecting pipe is inserted into the inserting section, and a transfer tube is provided on the outer cover of the connecting section.

[0017] In the above technical solution, because the joint portion includes a pipe section that can be fitted with an adapter pipe, it facilitates connection of the joint portion to the heat exchange fluid circulation system, simplifies the structure, and improves assembly efficiency. Furthermore, because the joint portion is in the form of an elbow and is bent at the junction of the plug section and the pipe section, the connection direction of the pipe section to the adapter pipe can intersect with the connection direction of the plug section to the connecting pipe. This reduces the height required for connecting the adapter joint to the adapter pipe, thereby reducing the space occupied by the adapter joint.

[0018] In some embodiments, the heat exchange assembly further includes: a second seal, the second seal being sealingly fitted between the adapter and the connecting pipe.

[0019] In the above technical solution, by providing a second seal between the adapter and the connecting tube, the risk of heat exchange fluid leaking from the interface between the adapter and the connecting tube is reduced, thereby improving battery reliability. Furthermore, the clear placement of the second seal facilitates assembly, thereby reducing assembly and design complexity.

[0020] In some embodiments, the connecting tube is inserted into the adapter, and the second sealing member is disposed around the connecting tube.

[0021] In the above technical solution, the connection between the connecting pipe and the adapter is convenient, which is conducive to improving the installation stability of the second seal, and the entire circumference of the connecting pipe can be sealed by the second seal, thereby further improving the sealing effect and reducing the risk of heat exchange fluid overflowing from the fitting point between the adapter and the connecting pipe.

[0022] In some embodiments, the adapter has a second annular groove, and the second sealing member is a second sealing ring embedded in the second annular groove.

[0023] In the above-mentioned technical solution, the second seal has a simple structure and is easy to manufacture. By embedding the second seal in the second annular groove, the installation stability of the second seal can be improved, allowing the second seal to reliably seal between the adapter and the connecting tube, further reducing the risk of heat exchange fluid overflowing from the interface between the adapter and the connecting tube, and further improving the reliability of the battery. In addition, because the connecting tube needs to pass through the housing, the adapter can be easily machined to be thicker than the wall thickness of the connecting tube, which helps to increase the groove depth of the second annular groove, improve the mating stability of the second seal and the second annular groove, further improve the installation stability of the second seal, and thus further improve the sealing effect of the second seal.

[0024] In some embodiments, there are multiple second sealing members and the second sealing members are spaced apart along the axial direction of the connecting pipe.

[0025] In the above technical solution, by utilizing the axial space of the connecting pipe and cleverly arranging multiple second sealing members, multiple sealing and blocking can be achieved, thereby improving the sealing effect.

[0026] In some embodiments, the connecting pipe is plug-fitted into the heat exchange element.

[0027] In the above technical solution, the connecting pipe and the heat exchanger are plugged in and matched, which can realize direct plug-in connection between the connecting pipe and the heat exchanger, thereby eliminating other connecting parts, improving the compactness of the matching, and easily realizing the assembly connection between the connecting pipe and the heat exchanger, reducing the structural complexity of the heat exchanger, and facilitating the processing of the heat exchanger.

[0028] In some embodiments, a connecting hole is provided on a side of the heat exchange element facing the housing, and an end portion of the connecting pipe located outside the housing has an extension section, which is inserted into the connecting hole.

[0029] In the above technical solution, only the connecting hole needs to be processed on the heat exchanger, which can simplify the processing of the heat exchanger. Moreover, since the connecting hole is arranged on the side of the heat exchanger facing the box body, it is convenient to insert the connecting pipe passing through the box body, thereby facilitating the plug-in connection between the two.

[0030] In some embodiments, the end portion of the connecting pipe located outside the housing further has a step, and the step abuts against a surface of the heat exchange element on one side facing the housing.

[0031] In the above technical solution, by providing a step at the end of the connecting pipe to abut against the outer surface of the heat exchanger, the depth of insertion of the extension into the connecting hole is limited, preventing the extension from extending too far into the connecting hole and blocking the flow path, thereby ensuring reliable communication between the connecting pipe and the heat exchanger. Furthermore, the abutment of the step against the heat exchanger improves the stability and sealing of the connection between the connecting pipe and the heat exchanger.

[0032] In some embodiments, the connecting tube includes a tube body, with the cross section of the connecting tube as the projection surface, the projection of the stage exceeds the projection outline range of the tube body, and the projection of the extension section is within the projection outline range of the tube body.

[0033] In the above technical solution, the larger area of ​​the platform allows for more stable contact with the heat exchanger, further improving the stability and sealing of the connection pipe and the heat exchanger. Furthermore, it helps reduce the diameter of the connection hole, improving the structural strength of the heat exchanger at the connection hole.

[0034] In some embodiments, the connecting pipe is connected to the heat exchange element by welding, and the heat exchange element is connected to the box body by bonding or welding.

[0035] In the above technical solution, since the connecting pipe is welded to the heat exchange element, and the heat exchange element is bonded or welded to the box, a reliable connection between the connecting pipe and the heat exchange element, as well as a reliable connection between the heat exchange element and the box can be achieved, thereby improving the working stability and reliability of the heat exchange component.

[0036] In some embodiments, the box assembly further includes: a bottom guard plate, which is arranged below the bottom wall of the box, and the heat exchange element is arranged between the bottom wall and the bottom guard plate.

[0037] In the above technical solution, by arranging the heat exchanger below the bottom wall of the box, the heat exchanger can exchange heat with the battery cell assembly in a larger range, thereby improving the temperature control effect and temperature control efficiency of the battery cell assembly. In addition, by arranging a bottom protective plate below the heat exchanger, the heat exchanger can be protected more reliably, reducing the risk of damage to the heat exchanger due to collision and bump, and improving the working reliability of the heat exchanger.

[0038] In some embodiments, the box assembly further includes: a seal, which is sealed between the bottom wall and the bottom guard plate and includes a peripheral portion arranged around the heat exchanger, and the inner ring area of ​​the connecting pipe corresponding to the peripheral portion passes through the bottom wall.

[0039] In the above technical solution, by positioning the connection tube through the bottom wall within the area surrounded by the outer peripheral portion, when the outer peripheral portion is sealed between the bottom wall and the bottom guard plate, muddy water, particulate matter, and the like outside the housing assembly are unlikely to pass through the outer peripheral portion into the area between the bottom wall and the bottom guard plate, and then flow to the location where the connection tube passes through the bottom wall and into the housing, thereby improving battery reliability. Furthermore, because the outer peripheral portion surrounds the heat exchange element, muddy water, particulate matter, and the like outside the housing assembly are unlikely to pass through the outer peripheral portion into the area between the bottom wall and the bottom guard plate, contaminating or corroding the heat exchange element between the bottom wall and the bottom guard plate, thereby improving the reliability and service life of the heat exchange element.

[0040] In some embodiments, adhesive layers are provided between the heat exchange element and the bottom wall and the bottom protective plate.

[0041] In the above technical solution, on the one hand, the stability of heat transfer between the heat exchange element and the bottom wall can be improved, and on the other hand, the protectiveness of the surfaces on both sides of the heat exchange element can be improved, thereby protecting the heat exchange element.

[0042] In some embodiments, the heat exchange element includes at least one bent and extended heat exchange tube, and the box assembly also includes: a foam element, which is arranged between the bottom wall and the bottom guard plate, and includes a first foaming portion arranged around the heat exchange element, and a second foaming portion arranged between adjacent tube sections of the same heat exchange tube or between adjacent heat exchange tubes.

[0043] In the above technical solution, the foam part can be used to fill the space between the bottom wall and the bottom guard plate where the heat exchange part is removed, that is, it is set complementary to the heat exchange part, so that the foam part can play a role in supporting the bottom wall and the bottom guard plate. When the protective plate is impacted by a collision, the foam part can buffer the impact force and reduce the force of the bottom guard plate impacting the heat exchange part or the box body, thereby protecting the heat exchange part and the battery core components in the box body. Moreover, the foam part can also fill the gap between the heat exchange tubes, and can play a role in supporting and limiting the position of the heat exchange tubes, so that the heat exchange tubes can be stably in the set position to play a stable temperature regulation role.

[0044] In some embodiments, the foam member is connected to the bottom guard plate, and the upper surface of the heat exchange member is higher than the upper surface of the foam member.

[0045] In the above technical solution, the difficulty of molding the foam part can be reduced, and it is beneficial to control the thickness uniformity of the foam part, so that the setting of the foam part will not interfere with the heat transfer coordination between the heat exchange part and the bottom wall, thereby improving the stability and reliability of heat transfer between the heat exchange part and the bottom wall, which is beneficial to improving the temperature regulation effect of the battery cell assembly, and thus improving the working reliability of the battery.

[0046] In some embodiments, the first flow channel has a first port and a second port, and the heat exchange element has a connecting hole connected to the connecting pipe. There are two connecting holes and one of them corresponds to the first port and the other corresponds to the second port. There are two adapters and connecting pipes respectively, and each connecting hole corresponds to a connecting pipe and an adapter.

[0047] In the above technical solution, each connecting tube does not need to have two channels with opposite flow directions. Therefore, the diameter of the connecting tube can be reduced, and thus the diameter of the connecting hole can be reduced, which reduces the difficulty of sealing the connection hole and the connecting tube, and improves the sealing reliability. Moreover, because the two ports of the first flow channel are connected to the two adapters through two connecting tubes, respectively, the two ports of the first flow channel do not need to be arranged together, the two connecting tubes do not need to be arranged together, and the two adapters do not need to be arranged together. Therefore, the relative position of the two adapters can be selected according to design requirements, making the design more flexible.

[0048] In some embodiments, the first flow channel includes a plurality of heat exchange flow channels arranged in parallel, one end of the plurality of heat exchange flow channels converges to the first port, and the other end of the plurality of heat exchange flow channels converges to the second port.

[0049] In the above technical solution, since the first flow channel includes multiple heat exchange flow channels arranged in parallel, when the total length of the first flow channel is fixed, the length of each heat exchange flow channel can be relatively short, which is beneficial to improving the overall heat exchange efficiency of the first flow channel and improving the temperature regulation effect of the heat exchange component on the battery core assembly. Moreover, by converging the two ends of the multiple heat exchange flow channels to two connecting pipes respectively, the number of connecting pipes and adapters can be reduced, the material cost can be reduced, and the number of connecting holes opened on the box body can be reduced, the sealing surface can be reduced, and the sealing performance can be improved.

[0050] 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 through 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.

[0051] In the above technical solution, 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 channel. When the heat exchange component of this embodiment is used to exchange heat with the battery cell assembly, at least part of the first U-shaped area formed by the outer second heat exchange section can be opposite to at least 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 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 outer battery cells and the environment, so that the heat exchange effect of the battery cells on the outer periphery of the battery cell assembly and the battery cells inside the battery cell assembly tend to be 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.

[0052] 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 section exchanges heat with the multiple battery cells located at the outermost circumference of the battery cell assembly.

[0053] 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 part 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.

[0054] 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.

[0055] 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.

[0056] 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 within the second U-shaped region of the second heat exchange channel.

[0057] 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.

[0058] 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.

[0059] In the above technical solution, the heat exchange element 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.

[0060] In some embodiments, the heat exchanger includes a main body and a connecting part, the main body includes a plurality of first tubes arranged at intervals along a first direction and extending along a second direction, the connecting part is connected to one end of the main body in the second direction, and the heat exchanger has a connecting hole connected to the connecting tube, and the connecting hole is provided on the connecting part.

[0061] In the above technical solution, by providing the connection holes on the connecting portion at one end of the main body, the inlet and outlet liquid connections can be concentrated at the end of the heat exchange element, thereby facilitating the connection of the adapter to the temperature control circulation system. Furthermore, because the main body includes multiple first tubes, each of which is spaced apart along the first direction and extends along the second direction, the main body structure is simple, covers a wider range, and improves the temperature control effect.

[0062] In some embodiments, the connecting portion includes third tubes located on both sides of the connecting hole in the first direction, and the two third tubes on both sides of at least one connecting hole extend away from each other in the direction from the connecting hole to the main body.

[0063] In the above technical solution, it is beneficial to improve the dispersion of the flat tubes at the connection part, to improve the uniformity of temperature regulation, and to improve the working reliability and stability of the battery.

[0064] In some embodiments, the box body is an integral stamped part and includes a bottom wall and a surrounding wall. A receiving space is formed between the bottom wall and the surrounding wall, and the battery cell is installed in the receiving space.

[0065] In the above technical solution, because the bottom wall and surrounding wall of the box are integrally stamped, there is no need to consider sealing issues at the junction between the bottom wall and the surrounding wall, and a sealing effect can be guaranteed. This prevents muddy water from seeping into the box through the junction and affecting the battery cells inside the box, thereby improving battery reliability. Furthermore, the integrally stamped box does not require splicing, which can improve production efficiency.

[0066] In some embodiments, the thermal management system of the battery further includes a temperature regulating component disposed in the box, and the temperature regulating component is disposed at at least one of the bottom, top, and side of the battery cell.

[0067] In the above technical solution, not only a heat exchange component is provided outside the box, but also a temperature regulating component is provided inside the box, which can improve the regulation effect of the battery.

[0068] 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.

[0069] 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

[0070] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 relevant drawings can be obtained based on these drawings without creative work.

[0071] Figure 1 A schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0072] Figure 2 An exploded view of a portion of the structure of a battery provided in some embodiments of the present application;

[0073] Figure 3 An exploded view of a portion of the structure of a battery provided in some embodiments of the present application;

[0074] Figure 4 for Figure 3 An enlarged view of the circled section A;

[0075] Figure 5 An exploded view of a heat exchange assembly provided in some embodiments of the present application;

[0076] Figure 6 for Figure 5 An enlarged view of the circled section B;

[0077] Figure 7 A partial structural assembly diagram of a battery provided in some embodiments of the present application;

[0078] Figure 8 for Figure 7 A partial orthographic projection view of the battery shown in FIG;

[0079] Figure 9 For the Figure 8 Cross-sectional view along the mid-CC line;

[0080] Figure 10 for Figure 9 An enlarged view of the circled portion D;

[0081] Figure 11 A schematic diagram of the structure of an adapter provided in some embodiments of the present application;

[0082] Figure 12 for Figure 11 An orthographic projection diagram of the adapter shown in ;

[0083] Figure 13 for Figure 12 A cross-sectional view of the adapter shown in ;

[0084] Figure 14 for Figure 12 A bottom view of the adapter shown in ;

[0085] Figure 15 for Figure 11 A side view of the adapter shown in ;

[0086] Figure 16 for Figure 15 A cross-sectional view of the adapter shown in ;

[0087] Figure 17 A partial cross-sectional view of the heat exchange assembly and the housing provided in some embodiments of the present application;

[0088] Figure 18 An exploded view of a heat exchange assembly and a box assembly provided in some embodiments of the present application;

[0089] Figure 19 for Figure 18 A bottom-up view of the heat exchange assembly and the housing after assembly shown in FIG;

[0090] Figure 20 for Figure 18 The assembly drawing of the heat exchanger and the box shown in FIG;

[0091] Figure 21 for Figure 20 Schematic diagram of the heat exchange element shown in ;

[0092] Figure 22 An assembly diagram of a partial composition of a battery provided in some embodiments of the present application;

[0093] Figure 23 A cross-sectional view of a portion of a battery provided in some embodiments of the present application;

[0094] Figure 24 An exploded view of a portion of a battery provided in some embodiments of the present application;

[0095] Figure 25 A schematic diagram of a heat exchange element provided in some embodiments of the present application;

[0096] Figure 26 A schematic diagram of a heat exchange element provided in some embodiments of the present application;

[0097] Figure 27 Schematic diagram of heat exchange components provided in other embodiments of the present application.

[0098] : Reference numerals: vehicle 1000; battery 100; controller 200; motor 300; box assembly 1; first direction X; second direction Y; third direction Z; box body 11; accommodating space 110; first space 115; second space 116; bottom wall 111; first hole 1111; second hole 1112; surrounding wall 112; first wall 113; second wall 114; box cover 12; bottom guard plate 13; first plate 131; second plate 132; sealing member 14; peripheral portion 141; adhesive layer 15; foam member 16; first foam portion 161; second foam portion 162; expansion beam 17; first expansion beam 171; second expansion beam 172; battery cell assembly 2; battery unit 20; battery cell 21; heat exchange assembly 3; heat exchange member 31; first flow channel 310; heat exchange flow channel 3103; first heat exchange section 31031; second heat exchange section 31032 First heat exchange channel 3104; first U-shaped region Z1; first section R1; second section R2; third section R3; fourth section R4; second heat exchange channel 3105; second U-shaped region Z2; connecting hole 311; first port 3101; second port 3102; main body 31a; connecting portion 31b; first tube 312; second tube 313; third tube 314; adapter 32; second channel 320; flange 32 1; flange 3211; insert 3212; first annular groove 3213; joint portion 322; plug-in section 3221; pipe section 3222; second annular groove 3223; connecting pipe 33; extension section 331; platform section 332; pipe body 333; first sealing member 34; second sealing member 35; connecting member 36; transfer pipe 4; thermostat 5; first thermostat 51; second thermostat 52; third thermostat 53. DETAILED DESCRIPTION

[0099] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0100] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" 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-secondary relationship.

[0101] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0102] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0103] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0104] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0105] The term "plurality" used in this application refers to two or more (including two).

[0106] In this 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 this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0107] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. A battery generally includes a housing assembly for enclosing one or more battery cells or one or more battery modules. A battery module generally includes multiple battery cells. The housing assembly can reduce the impact of liquids or other foreign matter on the charging or discharging of the battery cells.

[0108] A battery cell consists of a housing, an electrode assembly, and an electrolyte. The housing houses the electrode and electrolyte, and contains one or more electrode assemblies. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. The electrode assembly can be a wound or stacked structure. The battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets.

[0109] A positive electrode sheet generally includes a positive current collector and a positive active material layer. The positive active material layer is directly or indirectly coated on the positive current collector. The uncoated positive current collector protrudes from the coated positive current collector, serving as the positive tab. For lithium-ion batteries, for example, the positive current collector can be made of aluminum, and the positive active material layer can be made of lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide.

[0110] A negative electrode sheet generally includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is directly or indirectly coated on the negative electrode current collector. 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 the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material layer can be made of carbon, silicon, or other materials.

[0111] To ensure high current flow without melting, multiple positive electrode tabs are stacked together to form the positive electrode tab, while multiple negative electrode tabs are stacked together to form the negative electrode tab. The housing is equipped with pole posts, with the positive electrode tab electrically connected to the positive pole post, and the negative electrode tab electrically connected to the negative pole post. The pole posts can be connected directly to the pole posts or indirectly via adapters.

[0112] The material of the isolation film is not limited, and can be, for example, polypropylene or polyethylene.

[0113] In the battery of the related art, a brazed cold plate is provided inside the box. The brazed cold plate is located below the battery cell. During assembly, the insulation problem between the brazed cold plate and the battery cell needs to be considered. The manufacturing difficulty is relatively high. If the local insulation fails, it will affect the reliability of the battery. Moreover, the brazed cold plate will also occupy space in the box, affecting the capacity of the battery.

[0114] To this end, an embodiment of the present application proposes a battery. By placing the heat exchanger outside the housing, there is no need to consider insulation and corrosion protection between the heat exchanger and the battery cells within the housing, thereby simplifying the insulation and corrosion protection design of the heat exchanger, reducing processing difficulty and production cost, solving the short circuit problem between the battery cells and the heat exchanger, and improving battery reliability. Moreover, by placing the heat exchanger outside the housing, the heat exchanger does not occupy space within the housing, so that the battery capacity is not reduced due to the installation of the heat exchanger, and the battery capacity is better guaranteed. Moreover, by arranging an adapter within the housing and providing a connecting pipe that passes through the housing to connect the adapter with the heat exchanger outside the housing, the heat exchanger can introduce and discharge fluid through the adapter within the housing. In this way, by internally arranging the adapter within the housing, there is no need to provide an external liquid inlet and outlet path outside the housing that is connected to the heat exchanger, thereby eliminating the need to increase the sealing difficulty to meet the extension requirement of the external liquid inlet and outlet path. Therefore, the sealing difficulty of the battery can be reduced, the structure and cost of the battery can be simplified, and the sealing reliability can be improved.

[0115] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. 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. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0116] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device according to an embodiment of the present application.

[0117] Please refer to Figure 1 , Figure 1A schematic structural diagram 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. 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. 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 serve as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0118] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also 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.

[0119] Please refer to Figure 2 , Figure 2 An exploded view of a partial structure of a battery 100 provided for some embodiments of the present application. The battery 100 includes a case assembly 1 and a cell assembly 2. The case assembly 1 includes a case 11. The cell assembly 2 is disposed within the case 11. 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 a mixed connection. Mixed connection means that the plurality of battery cells 21 are connected in series and in parallel. The plurality of battery cells 21 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the plurality of battery cells 21 is accommodated in the case assembly 1. Of course, the plurality of battery cells 21 can also be first connected in series, in parallel, or in a mixed connection to form a battery module, and the plurality of battery modules can then be connected in series, in parallel, or in a mixed connection to form a whole, and then accommodated in the case assembly 1.

[0120] The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for electrically connecting the 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 cells 21 may be cylindrical, flat, or rectangular.

[0121] Please refer to Figure 3-Figure 7 , Figure 3 This is an exploded view of a portion of the structure of the battery 100 provided in some embodiments of the present application. Figure 4 yes Figure 3 The enlarged view of the circled section A. Figure 5 This is an exploded view of the heat exchange assembly 3 provided in some embodiments of the present application. Figure 6 yes Figure 5 The enlarged view of the circled part B, Figure 7 This is a partial structural assembly diagram of a battery 100 provided in some embodiments of the present application. The battery 100 also includes a heat exchange assembly 3, which includes a heat exchange member 31, an adapter 32, and a connecting pipe 33. The heat exchange member 31 is disposed outside the housing 11, and the adapter 32 is disposed inside the housing 11.

[0122] Combine Figures 8-10 , Figure 8 for Figure 7 A partial orthographic projection view of the battery shown in FIG; Figure 9 It is along Figure 8 Cross-sectional view along the mid-CC line; Figure 10 yes Figure 9 An enlarged view of the circled portion D. The heat exchanger 31 outside the housing 11 defines a first flow channel 310, while the adapter 32 inside the housing 11 defines a second flow channel 320. A connecting pipe 33 passes through the housing 11 and connects the first flow channel 310 and the second flow channel 320. Thus, by providing the connecting pipe 33 passing through the housing 11, communication is achieved between the adapter 32 inside the housing 11 and the heat exchanger 31 outside the housing 11, enabling the adapter 32 to be located inside the housing 11 while the heat exchanger 31 is located outside the housing 11.

[0123] For example, the fluid to be heat exchanged can be injected into the first flow channel 310 of the heat exchange component 31 through the second flow channel 320 of the adapter 32 and the connecting tube 33. The fluid flowing through the first flow channel 310 exchanges heat with the battery cells 21 through the heat exchange component 31 and the housing 11, thereby regulating the temperature of the battery cells 21. The fluid after heat exchange flows out of the first flow channel 310 and is discharged from the second flow channel 320 of the adapter 32 through the connecting tube 33. The fluid to be heat exchanged can be in liquid or gas form. For simplicity, the following description uses the fluid flowing through the heat exchange component 3 as an example of heat exchange liquid.

[0124] The number of adapters 32 is not limited and can be one or more. For example, when there is only one adapter 32, the second flow channel 320 within the adapter 32 can include two independent sub-flow channels. At the same time, there is also one connecting pipe 33 with two independent sub-channels therein, one of which corresponds to one sub-channel and is used to inject heat exchange liquid into the inlet of the first flow channel 310, and the other sub-channel corresponds to the other sub-channel and is used to receive the heat exchange liquid discharged from the outlet of the first flow channel 310.

[0125] For example, when there are two adapters 32, there are also two connecting tubes 33. One adapter 32 injects heat exchange liquid into the inlet of the first flow channel 310 through one connecting tube 33, and the other adapter 32 receives the heat exchange liquid discharged from the outlet of the first flow channel 310 through the other connecting tube 33. Of course, in other embodiments of the present application, the number of adapters 32 and connecting tubes 33 may also be different. For example, one adapter 32 may be connected to multiple connecting tubes 33, or multiple adapters 32 may be connected to one connecting tube 33. Among them, when the number of adapters 32 and connecting tubes 33 is the same and they are arranged in a one-to-one correspondence, the structure and connection can be simplified. Therefore, to simplify the description, the following mainly uses this solution as an example.

[0126] For example, the number of adapters 32 may be more than two, for example, it may be applicable to the case where the first flow channel 310 includes multiple parallel branches, and each parallel branch corresponds to one or two adapters 32. Of course, the present application is not limited thereto. In other embodiments of the present application, when the first flow channel 310 includes multiple parallel branches, the inlets of the multiple parallel branches may share the same adapter 32, the outlets of the multiple parallel branches may share the same adapter 32, or the inlets of the multiple parallel branches may share the same subchannel within the same adapter 32, and the outlets of the multiple parallel branches may share another subchannel within the adapter 32.

[0127] Therefore, by placing the heat exchanger 31 outside the box 11, there is no need to consider the insulation, corrosion protection and other issues between the heat exchanger 31 and the battery cell 11 in the box 11, thereby simplifying the insulation and corrosion protection design of the heat exchanger 31, reducing the processing difficulty and production cost, solving the short circuit problem between the battery cell 21 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 inside the box 11, so that the capacity of the battery 100 will not be reduced due to the installation of the heat exchanger 31, thereby better ensuring the capacity of the battery 100.

[0128] Moreover, by embedding the adapter 32 into the box body 11 and providing a connecting pipe 33 that passes through the box body 11 to connect the adapter 32 with the heat exchange element 31 outside the box body 11, the heat exchange element 31 can realize the introduction and discharge of fluid through the adapter 32 inside the box body 11. In this way, there is no need to provide an external inlet and outlet liquid path outside the box body 11 that is connected to the heat exchange element 31, and there is no need to increase the sealing difficulty in order to meet the extension requirements of the external inlet and outlet liquid path. Therefore, the sealing difficulty of the battery 100 can be reduced, the structure and cost of the battery 100 can be simplified, and the sealing reliability can be improved.

[0129] Please combine Figure 10 and Figure 11 , Figure 11Schematic diagram of the structure of the adapter 32 provided in some embodiments of the present application. In some embodiments of the present application, the adapter 32 includes a flange portion 321 and a joint portion 322. The joint portion 322 defines a second flow channel 320 and is connected to the connecting pipe 33. The flange portion 321 is connected to the outer periphery of the joint portion 322 and abuts the inner wall of the housing 11. The adapter 32 is fixedly connected to the housing 11 via the flange portion 321.

[0130] In the above technical solution, the adapter 32 includes a flange portion 321 and a joint portion 322, and the flange portion 321 is located at the periphery of the joint portion 322, wherein the flange portion 321 is fixedly connected to the housing 11, and the joint portion 322 is connected to the connecting pipe 33, so that the connection position of the adapter 32 and the housing 11 can be located at the peripheral area of ​​the connection position of the adapter 32 and the connecting pipe 33. In this way, on the one hand, the connection position of the adapter 32 and the housing 11 and the connection position of the adapter 32 and the connecting pipe 33 do not interfere with each other, thereby facilitating the installation and fixation of the adapter 32 and the housing 11, and facilitating the connection of the adapter 32 and the connecting pipe 33. On the other hand, the adapter 32 and the housing 11 are connected at the periphery of the connection position of the adapter 32 and the connecting pipe 33. Compared with the "method in which the connection position of the adapter and the connecting pipe is located at the periphery of the connection position of the adapter and the housing", it is beneficial to utilize the connection of the adapter 32 and the housing 11 to improve the connection reliability and stability of the adapter 32 and the connecting pipe 33.

[0131] Please combine Figure 10-13 , Figure 12 for Figure 11 Schematic diagram of the orthographic projection of the adapter 32 shown in FIG; Figure 13 for Figure 12 In some embodiments of the present application, the flange portion 321 includes a flange plate 3211 and an insert 3212 provided on the flange plate 3211 . The flange portion 321 is connected to the box body 11 via a connector 36 provided through the insert 3212 .

[0132] The embedded part 3212 refers to a part embedded in the flange 3211. For example, a light hole can be formed in the embedded part 3212 to facilitate the insertion of the connector 36 into the embedded part 3212. In this case, the embedded part 3212 can be understood as a light hole embedded part. The type and connection method of the connector 36 are not limited. For example, the connector 36 can be a bolt, a screw, a rivet, etc., and a threaded connection or a riveted connection can be used to achieve a fixed connection between the adapter 32 and the box body 11. Of course, the present application is not limited to this. For example, in other embodiments of the present application, the box body 11 and the adapter 32 can also be connected by bonding or welding, or, on the premise of bonding or welding, the connector 36 can also be used to connect to enhance the reliability of the connection.

[0133] The connection method between flange 3211 and insert 3212 is not limited. The connection method can be selected based on the material of flange 3211. For example, an interference fit assembly or a two-shot injection molding connection can be used to form a single piece. The material of insert 3212 is not limited. For example, a material that improves connection reliability, such as metal, can be selected.

[0134] In the above technical solution, by arranging an embedded component 3212 on the flange 3211 and using the embedded component 3212 to penetrate the connecting component 36 to realize the connection between the flange part 321 and the box body 11, the material requirements for the flange 3211 can be reduced. For example, the flange 3211 can be made of plastic or metal, which is conducive to improving the flexibility of design.

[0135] For example, when the flange 3211 is made of plastic, the processing difficulty and manufacturing cost of the adapter 32 can be reduced. Moreover, by setting the embedded part 3212 and the connecting part 36, the material strength of the embedded part 3212 can be set to be greater than the material strength of the flange 3211 to improve the connection reliability between the adapter 32 and the box body 11.

[0136] For example, when the flange 3211 and the joint portion 322 are integrally formed, if the flange 3211 is made of plastic, the processing difficulty of the adapter 32 can be reduced, facilitating the processing of the adapter 32. Furthermore, if the integrally formed structure of the flange 3211 and the joint portion 322 is relatively complex, the flange 3211 can be made of plastic to reduce the processing and manufacturing difficulty.

[0137] Please combine again Figure 10-13 In some embodiments of the present application, a first sealing member 34 is provided between the flange portion 321 and the housing 11 for sealing, and the first sealing member 34 is disposed around the mating surface between the joint portion 322 and the connecting pipe 33 .

[0138] In the above technical solution, by disposing a first seal 34 between the flange portion 321 and the housing 11, and by surrounding the mating surface between the joint portion 322 and the connecting tube 33, the entire circumference of the connection between the connecting tube 33 and the joint portion 322 is sealed by the first seal 34. This reduces the risk of heat exchange fluid escaping from the mating point of the connecting tube 33 and spilling into the housing 11 through the mating point between the adapter 32 and the housing 11, thereby improving the reliability of the battery 100. Furthermore, the clear placement of the first seal 34 facilitates its assembly, thereby reducing assembly and design difficulties.

[0139] For example, please refer again to Figure 12 and Figure 13, and combined with Figure 14 , Figure 14 for Figure 12 As shown in the bottom view of the adapter 32, the flange portion 321 has a first annular groove 3213, and the first seal 34 is a first sealing ring embedded in the first annular groove 3213. Thus, the structure of the first seal 34 is simple and easy to process. By embedding the first seal 34 in the first annular groove 3213, the installation stability of the first seal 34 can be improved, so that the first seal 34 can be reliably sealed between the flange portion 321 and the case 11 and surround the mating surface between the joint portion 322 and the connecting pipe 33. This further reduces the risk of heat exchange fluid overflowing from the mating point of the connecting pipe 33 from overflowing from the mating point between the adapter 32 and the case 11 into the case 11, further improving the reliability of the battery 100. In addition, the flange portion 321 can be easily processed to be thicker relative to the thickness of the box body 11, which is conducive to increasing the groove depth of the first annular groove 3213, improving the matching stability between the first seal 34 and the first annular groove 3213, and further improving the installation stability of the first seal 34, thereby further improving the sealing effect of the first seal 34.

[0140] Please combine again Figure 10-13 In some embodiments of the present application, the connecting tube 33 is inserted into the connector portion 322. In the above technical solution, inserting the connecting tube 33 into the connector portion 322 can achieve direct sleeve connection between the connecting tube 33 and the connector portion 322, thereby eliminating other connecting parts, improving the compactness of the fit, and facilitating the assembly connection between the connecting tube 33 and the adapter 32, reducing the structural complexity of the connector portion 322, and facilitating the processing of the adapter 32.

[0141] Please combine Figure 15 and Figure 16 , Figure 15 for Figure 11 A side view of the adapter 32 is shown in FIG. Figure 16 for Figure 15 In the cross-sectional view of the adapter 32 shown in the figure, in some embodiments of the present application, the connector portion 322 includes a plug-in section 3221 and a pipe section 3222. The connector portion 322 is in the form of an elbow and is bent at the connection between the plug-in section 3221 and the pipe section 3222. The connecting pipe 33 is plugged into the plug-in section 3221, and the pipe section 3222 is provided with an adapter pipe 4 on its outer sleeve.

[0142] In the above technical solution, because the joint portion 322 includes a pipe section 3222 that can be fitted onto the adapter pipe 4, the joint portion 322 is easily connected to the heat exchange liquid circulation system, simplifying the structure and improving assembly efficiency. Furthermore, because the joint portion 322 is in the form of an elbow and is bent at the connection between the plug section 3221 and the pipe section 3222, the connection direction (e.g., horizontal direction) of the pipe section 3222 and the adapter pipe 4 can intersect (e.g., be perpendicular to) the connection direction (e.g., vertical direction) of the plug section 3221 and the connecting pipe 33. This can reduce the height space required for the connection between the adapter 32 and the adapter pipe 4 (the height direction refers to the connection direction between the plug section 3221 and the connecting pipe 33), thereby reducing the space occupied by the adapter 32.

[0143] Please combine Figure 16-17 , Figure 17 A partial cross-sectional view of the heat exchange assembly 3 and the housing 11 provided in some embodiments of the present application. In some embodiments of the present application, the heat exchange assembly 3 further includes: a second seal 35 , which is sealed between the adapter 32 and the connecting pipe 33 .

[0144] In the above technical solution, by providing the second seal 35 between the adapter 32 and the connecting tube 33, the risk of heat exchange fluid leaking from the interface between the adapter 32 and the connecting tube 33 is reduced, thereby improving the reliability of the battery 100. Furthermore, the clear placement of the second seal 35 facilitates assembly of the second seal 35, thereby reducing assembly and design difficulties.

[0145] For example, please combine Figure 16-17 When the connecting tube 33 is inserted into the adapter 32, the second seal 35 can surround the connecting tube 33, that is, the second seal 35 is located between the outer circumference of the connecting tube 33 and the inner circumference of the adapter 32. This facilitates the connection between the connecting tube 33 and the adapter 32, improves the installation stability of the second seal 35, and allows the entire circumference of the connecting tube 33 to be sealed by the second seal 35, thereby further improving the sealing effect and reducing the risk of heat exchange fluid overflowing from the mating point between the adapter and the connecting tube.

[0146] For example, please combine Figure 16-17 The adapter 32 has a second annular groove 3223 , and the second sealing member 35 is a second sealing ring and is embedded in the second annular groove 3223 .

[0147] In the above-described technical solution, the second seal 35 has a simple structure and is easy to manufacture. By embedding the second seal 35 in the second annular groove 3223, the installation stability of the second seal 35 is improved, allowing the second seal 35 to reliably seal between the adapter 32 and the connecting tube 33, further reducing the risk of heat exchange fluid overflowing from the interface between the adapter 32 and the connecting tube 33, and further improving the reliability of the battery 100. In addition, because the connecting tube 33 needs to pass through the housing 11, the adapter 32 can be easily machined to be thicker than the connecting tube 33, which facilitates increasing the groove depth of the second annular groove 3223, improving the mating stability of the second seal 35 and the second annular groove 3223, further improving the installation stability of the second seal 35, and thus further improving the sealing effect of the second seal 35.

[0148] For example, please combine Figure 16-17 The second sealing member 35 can be multiple and spaced apart along the axial direction of the connecting pipe 33. Thus, by utilizing the axial space of the connecting pipe 33 and cleverly arranging multiple second sealing members 35, multiple sealing and blocking can be achieved, thereby improving the sealing effect.

[0149] Please combine Figure 17 In some embodiments of the present application, the connecting pipe 33 is plugged into and mated with the heat exchanger 31. In the above technical solution, plugging the connecting pipe 33 into and mating the heat exchanger 31 allows for direct connection between the connecting pipe 33 and the heat exchanger 31, thereby eliminating other connectors and improving the compactness of the fit. Furthermore, the assembly connection between the connecting pipe 33 and the heat exchanger 31 is easily achieved, reducing the structural complexity of the heat exchanger 31 and facilitating the processing of the heat exchanger 31.

[0150] Combine Figure 5 and Figure 6 In some embodiments of the present application, when the connecting tube 33 is plugged into the heat exchanger 31, a connecting hole 311 is defined on the side of the heat exchanger 31 facing the housing 11, and an extension section 331 is defined on the end of the connecting tube 33 located outside the housing 11. The extension section 331 is plugged into the connecting hole 311. As a result, only the connecting hole 311 needs to be machined on the heat exchanger 31, thereby simplifying the machining of the heat exchanger 31. Furthermore, since the connecting hole 311 is located on the side of the heat exchanger 31 facing the housing 11, the insertion of the connecting tube 33, which passes through the housing 11, is facilitated, thereby facilitating the connection between the two.

[0151] Of course, the present application is not limited to this. For example, in other embodiments of the present application, a protruding annular platform can also be provided on the heat exchanger 31, the inner ring of the annular platform is connected to the first flow channel 310, and the end of the connecting pipe 33 located outside the box body 11 is sleeved outside the annular platform, etc.

[0152] like Figure 17As shown, for example, the end of the connecting tube 33 located outside the housing 11 further includes a step 332, which abuts the surface of the heat exchanger 31 on the side facing the housing 11. Thus, by providing the step 332 at the end of the connecting tube 33 to abut the outer surface of the heat exchanger 31, the depth of insertion of the extension section 331 into the connecting hole 311 can be limited, preventing the extension section 331 from extending too far into the connecting hole 311 and blocking the flow path, thereby ensuring reliable communication between the connecting tube 33 and the heat exchanger 31. Furthermore, the abutment of the step 332 with the heat exchanger 31 improves the stability and sealing of the connection between the connecting tube 33 and the heat exchanger 31.

[0153] In some embodiments, the connecting tube 33 and the heat exchanger 31 can be bonded or welded at the mating position to improve the stability and sealing of the connection between the connecting tube 33 and the heat exchanger 31. For example, the stage 332 can be bonded or welded to the heat exchanger 31 to increase the connection area between the two, thereby improving the stability and sealing of the connection between the connecting tube 33 and the heat exchanger 31. Alternatively, for example, the connection between the connecting tube 33 and the heat exchanger 31 can be achieved by an interference fit, bonding, or welding of the extension section 331 and the heat exchanger 31.

[0154] like Figure 17 As shown, the connecting tube 33 exemplarily includes a tube body 333. Taking the cross-section of the connecting tube 33 as the projection plane, the projection of the step 332 extends beyond the projection outline of the tube body 333, while the projection of the extension section 331 lies within the projection outline of the tube body 333. For example, when the cross-sections of the extension section 331, the step 332, and the tube body 333 are all circular and their inner ring contours overlap, the outer ring diameter of the extension section 331 is smaller than the outer ring diameter of the tube body 333, and the outer ring diameter of the tube body 333 is smaller than the outer ring diameter of the step 332.

[0155] As a result, the area of ​​the step 332 is larger, allowing for more stable contact with the heat exchanger 31, further improving the stability and sealing of the connection tube 33 and the heat exchanger 31. Furthermore, this helps reduce the diameter of the connection hole 311, thereby increasing the structural strength of the heat exchanger 31 at the point where the connection hole 311 is opened. For example, the heat exchanger 31 is in the form of a flat tube, the width of which needs to be greater than the outer diameter of the extension section 331. When the outer diameter of the extension section 331 is reduced, there is no need to widen the flat tube to accommodate the connection hole 311. The flat tube can be made of aluminum or steel, for example, aluminum to ensure a low overall battery weight.

[0156] In some embodiments of the present application, the connecting pipe 33 is welded to the heat exchange element 31, and the heat exchange element 31 is bonded or welded to the housing 11. For example, during assembly, the connecting pipe 33 and the heat exchange element 31 can be first plugged in and welded together, and then the connecting pipe 33 can be passed through the housing, and then the heat exchange element 31 and the housing 11 can be bonded or welded.

[0157] In the above technical solution, since the connecting pipe 33 is welded to the heat exchanger 31, and the heat exchanger 31 is bonded or welded to the box body 11, a reliable connection between the connecting pipe 33 and the heat exchanger 31, as well as a reliable connection between the heat exchanger 31 and the box body 11 can be achieved, thereby improving the working stability and reliability of the heat exchange component 3.

[0158] Combine Figure 18 and Figure 19 , Figure 18 This is an exploded view of the heat exchange assembly 3 and the box assembly 1 provided in some embodiments of the present application. Figure 19 for Figure 18 In the bottom-view diagram of the heat exchange assembly 3 and the box assembly 1 after assembly, in some embodiments of the present application, the box assembly 1 further includes: a bottom guard plate 13, the bottom guard plate 13 is arranged below the bottom wall 111 of the box 11, and the heat exchange element 31 is arranged between the bottom wall 111 and the bottom guard plate 13.

[0159] Therefore, by arranging the heat exchanger 31 below the bottom wall 111 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 temperature control efficiency of the battery cell assembly 2. Moreover, by arranging the bottom protective plate 13 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.

[0160] Please refer to Figure 18 、 Figure 20 and Figure 21 , Figure 20 for Figure 18 The assembly diagram of the heat exchanger and the box shown in Figure 21 for Figure 20 , in some embodiments of the present application, the box assembly 1 further includes: a seal 14, the seal 14 is sealingly fitted between the bottom wall 111 and the bottom guard plate 13, and the seal 14 includes a peripheral portion 141 arranged around the heat exchanger 31, that is, the heat exchanger 31 is located as a whole in the inner ring area of ​​the peripheral portion 141, and the connecting pipe 33 passes through the bottom wall 111 corresponding to the inner ring area of ​​the peripheral portion 141.

[0161] Thus, by positioning the connection tube 33 so as to penetrate the bottom wall 111 within the area surrounded by the outer peripheral portion 141, when the outer peripheral portion 141 is sealed between the bottom wall 111 and the bottom guard plate 13, muddy water, particulate matter, and the like outside the box assembly 1 are unlikely to pass through the outer peripheral portion 141 and enter between the bottom wall 111 and the bottom guard plate 13, and then flow to the location where the connection tube 33 penetrates the bottom wall 111 and enter the box 11, thereby improving the reliability of the battery 100. Furthermore, because the outer peripheral portion 141 surrounds the heat exchange element 31, muddy water, particulate matter, and the like outside the box assembly 1 are unlikely to pass through the outer peripheral portion 141 and enter between the bottom wall 111 and the bottom guard plate 13, thereby contaminating or corroding the heat exchange element 31 between the bottom wall 111 and the bottom guard plate 13, thereby improving the reliability and service life of the heat exchange element 31.

[0162] Of course, the present application is not limited to this. For example, in some other embodiments of the present application, only most of the heat exchange element 31 may be located in the inner ring area of ​​the outer peripheral portion 141, and the remaining part (such as part or edge) may be located in the outer ring area of ​​the outer peripheral portion 141, or clamped between the outer peripheral portion 141 and the bottom wall 111, or clamped between the outer peripheral portion 141 and the bottom guard plate 13, or wrapped in the outer peripheral portion 141.

[0163] However, if the adapter is installed outside the box, due to the limitation of the vehicle's ground clearance, there is insufficient space between the bottom wall of the box and the bottom guard plate, and the adapter needs to be installed on the side or above the side wall of the box. In this way, the heat exchange component between the bottom wall of the box and the bottom guard plate needs to be connected to the adapter through a longer external pipe. On the one hand, the material cost of the external pipe is increased, the flow channel is extended, and the flow resistance of the heat exchange liquid is increased. On the other hand, the external pipe needs to pass through the sealing position between the bottom wall of the box and the bottom guard plate. The structure of the passing position of the external pipe is irregular, which increases the sealing difficulty and sealing cost at this location, reduces the sealing effect between the bottom wall and the bottom guard plate, and reduces the reliability of the battery. On the other hand, the external adapter is easily damaged by bumps and there is a risk of leakage, which affects the overall working stability and reliability of the heat exchange component.

[0164] In the embodiment of the present application, the adapter 32 is built into the box body 11, and there is no need to introduce an external pipeline to connect the external heat exchange component 31 and the built-in adapter 32, thereby shortening the flow channel and reducing the flow resistance of the heat exchange liquid. Moreover, since there is no need for the external pipeline to pass through, the bottom wall 111 of the box body 11 and the bottom guard plate 13 can be simply and reliably sealed by the seal 14, reducing the sealing difficulty and sealing cost. Moreover, the built-in adapter 32 is not easily damaged by collision, reducing the risk of leakage, improving the working stability and reliability of the heat exchange component 3, and can improve the reliability of the battery 100 during transportation and vehicle use.

[0165] In some embodiments of this application, please refer to Figure 10 and Figure 18 Glue layers 15 are provided between the heat exchange element 31 and the bottom wall 111 and the bottom guard plate 13. That is, the surface of the heat exchange element 31 facing the bottom wall 111 is fixedly connected to the bottom wall 111 by the glue layer 15, and the surface of the heat exchange element 31 facing the bottom guard plate 13 is also fixedly connected to the bottom guard plate 13 by the glue layer 15. This can improve the stability of heat transfer between the heat exchange element 31 and the bottom wall 111, and improve the protectiveness of the surfaces on both sides of the heat exchange element 31, thereby protecting the heat exchange element 31.

[0166] It is worth noting that the order in which the adhesive layer 15 is disposed is not limited. For example, the adhesive layer 15 can be applied to both sides of the heat exchanger 31, or to the side of the bottom wall 111 facing the heat exchanger 31, or to the side of the bottom guard plate 13 facing the heat exchanger 31. For example, the adhesive layer 15 can be structural adhesive, highly thermally conductive double-sided adhesive, or the like.

[0167] In some embodiments of this application, please refer to Figure 10 and Figure 18 The heat exchange element 31 includes at least one bent and extended heat exchange tube, and the box assembly 1 also includes a foam member 16, which is arranged between the bottom wall 111 and the bottom guard plate 13, and the foam member 16 includes a first foaming portion 161 arranged around the heat exchange element 31, and a second foaming portion 162 arranged between adjacent tube sections of the same heat exchange tube or between adjacent heat exchange tubes.

[0168] Therefore, the foam part 16 can be used to fill the space between the bottom wall 111 and the bottom guard plate 13 where the heat exchange part 31 is removed, that is, it is set to complement the heat exchange part 31, so that the foam part 16 can support the bottom wall 111 and the bottom guard plate 13. When the protective plate 13 is impacted by a collision, the foam part 16 can buffer the impact force and reduce the force of the bottom guard plate 13 impacting the heat exchange part 31 or the box body 11, thereby protecting the heat exchange part 31 and the battery core assembly 2 in the box body 11. Moreover, the foam part 16 can also fill the gap between the heat exchange tubes, and can support and limit the position of the heat exchange tubes, so that the heat exchange tubes can be stably in the set position to achieve a stable temperature regulation effect.

[0169] In some embodiments of this application, please refer to Figure 10 and Figure 18The foam member 16 is connected to the bottom guard plate 13. The upper surface of the heat exchange member 31 is higher than the upper surface of the foam member 16. The surface of the heat exchange member 31 facing the bottom wall 111 is positioned closer to the bottom wall 111 than the surface of the foam member 16 facing the bottom wall 111. This reduces the difficulty of molding the foam member 16 and facilitates controlling the uniformity of the thickness of the foam member 16. This ensures that the placement of the foam member 16 does not interfere with the heat transfer coordination between the heat exchange member 31 and the bottom wall 111, thereby improving the stability and reliability of heat transfer between the heat exchange member 31 and the bottom wall 111, facilitating improved temperature regulation of the battery cell assembly 2, and thereby enhancing the operational reliability of the battery 100.

[0170] In addition, when a glue layer 15 is provided between the heat exchanger 31 and the bottom wall 111, the foam part 16 is set to be connected to the bottom guard plate 13, which is conducive to reducing the difficulty of setting the glue layer 15 between the heat exchanger 31 and the bottom wall 111, and is conducive to improving the uniformity of the glue layer 15 provided between the heat exchanger 31 and the bottom wall 111, thereby improving the stability and reliability of heat transfer between the heat exchanger 31 and the bottom wall 111, and is conducive to improving the temperature regulation effect of the battery cell assembly 2, thereby improving the working reliability of the battery 100.

[0171] For example, the foam part 16 can be processed on the bottom guard plate 13 through a mold through a foaming process, so as to ensure the uniformity of the thickness of the foam part 16, and then glue is applied to the heat exchange part 31 or the bottom wall 111, and then the heat exchange part 31 is installed between the guard plate 13 with the foam part 16 and the bottom wall 111. When the heat exchange part 31 protrudes toward the bottom wall 111 relative to the foam part 16, the stability and reliability of the heat transfer cooperation between the heat exchange part 31 and the bottom wall 111 can be guaranteed.

[0172] In other embodiments of the present application, the bottom guard plate 13, the housing 11, and the heat exchanger 31 may be assembled in place first, and then a foaming liquid may be injected between the bottom guard plate 13 and the bottom wall 111 of the housing 11 for foaming. At this time, the injection position of the foaming liquid needs to be considered to ensure uniform foaming height at all locations and avoid affecting the connection between the heat exchanger 31 and the housing 11. Alternatively, in other embodiments of the present application, a foaming part 16 may be processed on the bottom wall 111 of the housing 11 using a mold through a foaming process, and then the heat exchanger 31 and the protective plate 13 may be assembled.

[0173] It is worth noting that the composition and material of the bottom guard plate 13 are not limited. For example, the bottom guard plate 13 can be a single-layer plate, for example, a metal plate with an anti-corrosion layer on the outer surface. Alternatively, the bottom guard plate 13 can also be composed of a combination of multiple layers, for example, a combination of Figure 18The bottom guard plate 13 includes a first plate 131 and a second plate 132. The second plate 132 is located below the first plate 131. The first plate 131 can be made of metal, and the second plate 132 can be made of corrosion-resistant material, such as PVC (polyvinyl chloride).

[0174] In some embodiments of the present application, Figure 5 、 Figure 6 and Figure 21 The first flow channel 310 has a first port 3101 and a second port 3102. The heat exchanger 31 has a connecting hole 311 connected to the connecting pipe 33. There are two connecting holes 311, one of which corresponds to the first port 3101 and the other corresponds to the second port 3102. There are two adapters 32 and connecting pipes 33, respectively. Each connecting hole 311 corresponds to a connecting pipe 33 and an adapter 32.

[0175] In this way, by setting two adapters 32 and two connecting pipes 33 to be connected to the two ports of the first flow channel 310 in a one-to-one manner, that is, one port can be connected to one adapter 32 through one connecting pipe 33, and the other port can be connected to another adapter 32 through another connecting pipe 33. In this way, one adapter 32 can be used as a joint for liquid inlet, and the other can be used as a joint for liquid outlet. There is no need to set two channels with opposite flow directions in each connecting pipe 33, so the diameter of the connecting pipe 33 can be reduced, thereby reducing the aperture of the connecting hole 311, reducing the difficulty of sealing the connection hole 311 and the connecting pipe 33, and improving the sealing reliability.

[0176] Moreover, since the two ports of the first flow channel 310 are respectively connected to the two adapters 32 through the two connecting pipes 33, the two ports of the first flow channel 310 do not need to be set together, the two connecting pipes 33 do not need to be set together, and the two adapters 32 do not need to be set together. Therefore, the relative positions of the two adapters 32 can be selected according to design requirements, making the design more flexible.

[0177] It is worth noting that which of the two adapters 32 is for liquid inlet and which one is for liquid outlet can be specifically set according to actual requirements, or the two adapters 32 can be set to be switchable, that is, whether the adapter 32 is for liquid inlet or liquid outlet is different in different modes.

[0178] For example, in combination Figure 21 and Figure 21The first flow channel 310 includes a plurality of heat exchange flow channels 3103 arranged in parallel. One end of each heat exchange flow channel 3103 converges to the first port 3101, and the other end of each heat exchange flow channel 3103 converges to the second port 3102. Each heat exchange flow channel 3103 has a first end and a second end. When the heat exchange assembly 3 is in operation, one of the first end and the second end serves as an inlet and the other as an outlet. Alternatively, the first end and the second end can switch between inlet and outlet states. The first end of each heat exchange flow channel 3103 converges to the first port 3101, and the second end of each heat exchange flow channel 3103 converges to the second port 3102.

[0179] In this way, since the first flow channel 310 includes multiple heat exchange flow channels 3103 arranged in parallel, when the total length of the first flow channel 310 is fixed, the length of each heat exchange flow channel 3103 can be relatively short. For example, the sum of the lengths of the multiple heat exchange flow channels 3103 is equal to the total length of the first flow channel 310, which is beneficial to improving the overall heat exchange efficiency of the first flow channel 310 and improving the temperature regulation effect of the heat exchange component 31 on the battery cell assembly 2. Moreover, by converging the two ends of the multiple heat exchange flow channels 3103 to two connecting pipes 33 respectively, the number of connecting pipes 33 and adapters 32 can be reduced, the material cost can be reduced, and the number of connecting holes 311 opened on the box body 11 can be reduced, the sealing surface can be reduced, and the sealing performance can be improved.

[0180] Of course, the present application is not limited to this. For example, in some other embodiments of the present application, there is one connecting tube 33, and the connecting tube 33 has a first channel and a second channel that are isolated from each other. There are two adapters 32 and both are connected to the connecting tube 33. The first channel connects the first port 3101 with one adapter 32, and the second channel connects the second port 3102 with another adapter 32.

[0181] It is worth noting that the form of the heat exchange channel 3103 is not limited. For example, it may include, but is not limited to, any one of the first heat exchange channel 3104 and the second heat exchange channel 3105 described below. For example, at least one of the plurality of heat exchange channels 3103 arranged in parallel may be the first heat exchange channel 3104, or at least one of the plurality of heat exchange channels 3103 arranged in parallel may be the second heat exchange channel 3105, or the plurality of heat exchange channels 3103 arranged in parallel may include at least one first heat exchange channel 3104 and at least one second heat exchange channel 3105.

[0182] Please combine again Figure 21 and Figure 25In some embodiments, the heat exchange element 31 includes at least one first heat exchange channel 3104, which includes a first heat exchange segment 31031 and a second heat exchange segment 31032. The second heat exchange segment 31032 is bent to form a first U-shaped region Z1. The first heat exchange segment 31031 is bent within the first U-shaped region Z1 and is connected to the second heat exchange segment 31032 in a bent manner. The second heat exchange segment 31032 is located at the outermost side of the first heat exchange channel 3103 in the circumferential direction.

[0183] 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 more easily through the side walls and other structures of the box assembly 1, while the battery cells 21 on the inside have difficulty in dissipating heat and are greatly affected by the heat dissipation of the adjacent battery cells 21. In this way, 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, which makes the battery 100 less stable during operation and the battery performance is prone to attenuation.

[0184] In view of this, in the above technical solution, the second heat exchange section 31032 is bent to form a first U-shaped area Z1, and the first heat exchange section 31031 is bent and arranged in the first U-shaped area Z1, and the second heat exchange section 31032 is arranged to be located at the outermost side of the first heat exchange channel 3104 in the circumferential direction. When the heat exchange element 31 of this embodiment is used to exchange heat with the battery cell assembly 2, at least part of the first U-shaped area Z1 formed by the outer second heat exchange section 31032 can be opposite to at least part of the battery cell 21 on the periphery of the battery 100, so that the second heat exchange section 31032 is located at the outermost side of the first heat exchange channel 3104. 032 can exchange heat for at least part of the outer circumference of the battery cell assembly 2, and the first heat exchange section 31031 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 the peripheral battery cell 21 and the environment, so that the heat exchange effect of the battery cell 21 outside the battery cell assembly 2 and the battery cell 21 inside the battery cell assembly 2 tends to be 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.

[0185] Exemplarily, when the heat exchange element 31 is heating the battery cell assembly 2, the heat exchange fluid may also flow from the first heat exchange section 31031 to the second heat exchange section 31032, but the heat exchange fluid may also flow from the second heat exchange section 31032 to the first heat exchange section 31031. Exemplarily, when the heat exchange fluid flows from the second heat exchange section 31032 to the first heat exchange section 31031, 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 portion 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 31031 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 on the periphery of the battery 100 and the battery cells 21 in the middle of the battery cell assembly 2 can be basically the same, and the temperatures of the battery cells 21 on the periphery of the battery 100 and the battery cells 21 in the middle of the battery cell assembly 2 after heating are relatively consistent, so that the temperature distribution in the battery 100 is more uniform.

[0186] For example, in this embodiment, when the heat exchange element 31 is dissipating heat and cooling the battery cell assembly 2, the heat exchange fluid can also flow from the first heat exchange section 31031 to the second heat exchange section 31032, but the heat exchange fluid can also flow from the second heat exchange section 31032 to the first heat exchange section 31031. When the heat exchange fluid also flows from the first heat exchange section 31031 to the second heat exchange section 31032, the battery cells 21 in the middle of the battery 100 (that is, the internal battery cells 21 on the inner side of the periphery) can be cooled first, and then the battery cells 21 at the peripheral edge of the battery 100 can 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 31031 can better meet the heat dissipation requirements of the battery cells 21 at the middle of the battery 100. 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 31032 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.

[0187] Please refer to Figure 21 and Figure 22 , Figure 22 This is an assembly diagram of a partial assembly of batteries provided in some embodiments of the present application. In some embodiments, the battery cell assembly 2 includes multiple battery cells 20 arranged along a first direction X. Each battery cell 20 includes multiple battery cells 21 stacked sequentially along a second direction Y. At least a portion of the second heat exchange segment 31032 exchanges heat with the multiple battery cells 21 located at the outermost circumference of the battery cell assembly 2. For example, the thickness direction of the battery 100 is the third direction Z, and one of the first direction X and the second direction Y is the width direction of the battery 100, while the other is the length direction of the battery 100.

[0188] In the above technical solution, by coordinating the arrangement of the battery cells 21 and the extended arrangement of the first heat exchange channel 3104, and setting at least a portion of the second heat exchange section 31032 to exchange heat with the peripheral battery cells 21, for example, heat transfer can be achieved, which can improve the heat exchange efficiency of the peripheral battery cells 21, and further balance 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.

[0189] In some embodiments, combined Figure 25The second heat exchange section 31032 includes a first section R1, a second section R2, and a third section R3 that are sequentially bent and connected to form a first U-shaped region Z1. The first section R1 and the third section R3 both extend along the second direction Y, while the second section R2 extends along the first direction X. In the above technical solution, the coverage area of ​​the first U-shaped region Z1 can be relatively wide, which is conducive to heat exchange with the peripheral battery cells 21 of the battery cell assembly 2, further improving the temperature uniformity of the battery 100.

[0190] In some embodiments, combined Figure 25 The second heat exchange section 31032 further includes a fourth section R4 that is connected to the first section R1 by a bend. The fourth section R4 and the second section R2 are located on either side of the first section R1 along the second direction Y. The fourth section R4 extends in the first direction X toward the third section R3. As a result, the fourth section R4 can block at least a portion of the opening of the first U-shaped region Z1, allowing the second heat exchange section 31032, located on the periphery of the first heat exchange channel 3104, to exchange heat with the battery cells 21 on the periphery of the cell assembly 2 over a wider range, further improving the temperature uniformity of the battery 100.

[0191] In some embodiments, combined Figure 26 and Figure 27 The heat exchange element 31 further includes at least one second heat exchange channel 3105, and the second heat exchange channel 3105 and the first heat exchange channel 3104 are bent in the same plane, and the second heat exchange channel 3105 is bent in the first U-shaped area Z1.

[0192] For example Figure 26 The embodiment shows one of the matching modes of a first heat exchange channel 3104 and a second heat exchange channel 3105, for example Figure 27 The embodiment shows one way of matching a first heat exchange channel 3104 and two second heat exchange channels 3105.

[0193] In the above technical solution, by setting at least one first heat exchange channel 3104 and at least one second heat exchange channel 3105, 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.

[0194] In some embodiments, combined Figure 27 At least one second heat exchange channel 3105 is bent to form a second U-shaped area Z2, and at least a portion of the first heat exchange section 31031 is disposed in the second U-shaped area Z2 of the second heat exchange channel 3105.

[0195] For example Figure 27It is shown that one of the second heat exchange channels 3105 is bent to form a second U-shaped area Z2, at least a portion of the first heat exchange section 31031 is located in the second U-shaped area Z2 of the second heat exchange channel 3105, and another second heat exchange channel 3105 is also located in the second U-shaped area Z2 of the second heat exchange channel 3105.

[0196] In the above technical solution, a second U-shaped area Z2 is formed by setting at least one second heat exchange channel 3105 to bend, and at least a part of the first heat exchange section 31031 is set in the second U-shaped area Z2 of the second heat exchange channel 3105, which is beneficial to the coordinated cooperation between the first heat exchange channel 3104 and the second heat exchange channel 3105, so as to further improve the temperature uniformity of the battery 100.

[0197] Please refer to Figure 21 and Figure 23 , Figure 23 A cross-sectional view of a partial composition of a battery provided in some embodiments of the present application. In some embodiments, the heat exchange element 31 includes at least one bent and extended heat exchange tube, and a heat exchange channel 3103 is defined in each heat exchange tube. It can be seen that when the heat exchange element 31 includes multiple bent and extended heat exchange tubes, the heat exchange element 31 includes multiple heat exchange channels 3103.

[0198] For example, the heat exchange tube may be made of aluminum or steel, for example, aluminum, so that the overall weight of the battery 100 is lighter.

[0199] For example, the heat exchange tube 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 arc-shaped bend of the heat exchange tube at the bending position can increase the flow rate of the heat exchange fluid in the heat exchange channel 3103, thereby increasing the heat exchange efficiency of the heat exchange element 31.

[0200] Illustratively, the heat exchange tube is a flat tube structure, which refers to a tube shape with a width m greater than a thickness n. A flow channel can be formed within the flat tube. A heat exchange liquid can be introduced into the flow channel to exchange heat with the battery cell assembly 2, thereby achieving a temperature control effect on the battery 100. Typically, the heat exchange components used in batteries are double-layer brazed plate structures, i.e., brazed together from two layers of plate with a heat exchange channel formed between the two layers. Illustratively, the flat tube can be spliced ​​together from multiple extruded tube sections. The thickness of the flat tube can be much smaller than that of a double-layer brazed plate structure, thereby occupying a smaller space, increasing the capacity of the battery 100, and reducing the weight, volume, and cost of the battery 100.

[0201] Please refer to Figure 20 and Figure 21In some embodiments, the heat exchanger 31 includes a main body 31a and a connecting portion 31b. The main body 31a includes a plurality of first tubes 312 spaced apart along the first direction X and extending along the second direction Y. The connecting portion 31b is connected to one end of the main body 31a in the second direction Y. The heat exchanger 31 has a connecting hole 311 connected to the connecting tube 33. The connecting hole 311 is provided on the connecting portion 31b.

[0202] Thus, by locating the connection hole 311 on the connection portion 31b at one end of the main body 31a, the inlet and outlet liquid connections can be concentrated at the end of the heat exchange element 31, thereby facilitating the connection of the adapter 32 to the inlet and outlet liquid paths of the temperature control circulation system. Furthermore, because the main body 31a includes multiple first tubes 312, which are spaced apart along the first direction X and each first tube 312 extends along the second direction Y, the structure of the main body 31a is simple, and it can cover a wider area, thereby improving the temperature control effect.

[0203] For example, please refer to Figure 20 and Figure 21 The main body 31a may further include a plurality of second tubes 313, the second tubes 313 being located at the ends of the first tubes 312 in the second direction Y, and the first tubes 312 and the first tubes 312 may be connected through the second tubes 313, thereby further simplifying the structure of the main body 31a.

[0204] In some embodiments, please refer to Figure 20 and Figure 21 When "the heat exchange channel 3103 includes a first heat exchange section 31031 and a second heat exchange section 31032, the second heat exchange section 31032 is bent to form a U-shaped area, the first heat exchange section 31031 is bent and arranged in the U-shaped area and is bent and connected to the second heat exchange section 31032, and the second heat exchange section 31032 is located at the outermost side of the heat exchange channel 3103 in the circumferential direction", the first heat exchange section 31031 may include two first tubes 312 and one second tube 313, the second heat exchange section 31032 may include several first tubes 312 and several second tubes 313, and a first tube 312 of the first heat exchange section 31031 is connected to a first tube 312 of the second heat exchange section 31032 via the second tube 313. In this way, the structure can be simplified and processing can be facilitated.

[0205] In some embodiments, please refer to Figure 20 and Figure 21 The connecting portion 31b includes third tubes 314 located on both sides of the connecting hole 311 in the first direction X, and the two third tubes 314 on both sides of at least one connecting hole 311 extend away from each other in the direction from the connecting hole 311 to the main body 31a.

[0206] This helps to improve the dispersion of the flat tubes at the connection portion 31b, avoiding the problem of uneven heat exchange caused by the heat exchange capacity of the connection portion 31b exceeding the heat exchange capacity of the main body 31a due to the concentration of the flat tubes at the connection portion 31b, thereby improving the uniformity of temperature control and enhancing the working reliability and stability of the battery 100.

[0207] Combine Figure 18 and Figure 22 In some embodiments of the present application, the housing 11 is an integrally stamped part and includes a bottom wall 111 and a surrounding wall 112. The bottom wall 111 and the surrounding wall 112 form a receiving space 110, and the battery cell 21 is installed in the receiving space 110. For example, the housing 11 can be made of sheet metal and stamped into a basin shape to include the bottom wall 111 and the surrounding wall 112.

[0208] Therefore, since the bottom wall 111 and the surrounding wall 112 of the box body 11 are integrally stamped and formed, there is no need to consider the sealing problem at the connection between the bottom wall 111 and the surrounding wall 112, and the sealing effect can be guaranteed, thereby preventing muddy water from seeping into the box body 11 through the connection between the bottom wall 111 and the surrounding wall 112 and affecting the battery cell assembly 2 inside the box body 11, 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.

[0209] In some embodiments of the present application, Figure 21-24 As shown, Figure 24 This is an exploded view of a portion of the battery components provided in some embodiments of the present application. The thermal management system of the battery 100 further includes a thermostat 5 disposed within the housing 11. The thermostat 5 is located at at least one of the bottom, top, and side portions of the battery cell 21. In this technical solution, the thermostat 5 is disposed not only within the housing 11 but also outside the housing 11, thereby enhancing the thermal regulation of the battery 100.

[0210] For example, in some embodiments of the present application, Figure 22-24 As shown, the thermostat 5 may include at least one of a first thermostat 51, a second thermostat 52, and a third thermostat 53. The first thermostat 51 is disposed within the housing 11 and at the bottom of the battery cell 21, the second thermostat 52 is disposed within the housing 11 and at the top of the battery cell 21, and the third thermostat 53 is disposed within the housing 11 and at the side of the battery cell 21. That is, the battery 100 may include only one of the first thermostat 51, the second thermostat 52, and the third thermostat 53; may also include two of the first thermostat 51, the second thermostat 52, and the third thermostat 53; or may include all three of the first thermostat 51, the second thermostat 52, and the third thermostat 53. Therefore, the thermostat 5 may be disposed in an appropriate location according to actual conditions to meet the temperature regulation requirements of the battery 100.

[0211] For example, in combination Figure 24 The adjacent battery cells 21 in the battery cell assembly 2 can have their large surfaces facing each other, and the third temperature regulating member 53 is arranged between the large surfaces of the adjacent battery cells 21 to be located on the side of the battery cells 21, thereby improving the temperature regulating effect of the battery cells 21.

[0212] In addition, the thermal management system of the battery 100 is not limited to only including the above-mentioned temperature regulating element 5. For example, in some embodiments, the thermal management system of the battery 100 is combined with the above-mentioned temperature regulating element 5. Figure 22 An expansion beam 17 may be provided in the box body 11. For example, there may be multiple expansion beams 17. The battery cell assembly 2 is sandwiched between the multiple expansion beams 17. For example, it may include a first expansion beam 171 and a second expansion beam 172. The battery cell assembly 2 is sandwiched between the first expansion beam 171 and the second expansion beam 172. A heat exchange flow channel may be provided in the expansion beam 17 for temperature adjustment, thereby constituting a part of the thermal management system.

[0213] According to a second embodiment of the present application, an electrical device is provided, comprising a battery 100 according to any of the aforementioned solutions, wherein the battery 100 is configured to provide electrical energy to the electrical device. The electrical device may be any of the aforementioned devices or systems employing the battery 100. The improved performance of the battery 100 facilitates improved operating performance of the electrical device.

[0214] Next, a battery 100 according to a specific embodiment of the present application is described.

[0215] like Figure 2-Figure 24 As shown, the battery 100 includes: a box assembly 1, a cell assembly 2 and a heat exchange assembly 3, wherein the box assembly 1 includes: a box body 11, a box cover 12 and a bottom guard plate 13, the box body 11 is an integral stamped part and includes a bottom wall 111 and a surrounding wall 112 to form a stamped box shape with an open top, the cell assembly 2 is arranged in the box body 11, 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 111 to protect the box body 11.

[0216] A first expansion beam 171 is provided within the box 11, extending along a first direction X. The surrounding wall 112 has two opposing walls in a second direction Y, namely, a first wall 113 and a second wall 114. The space within the box 11 between the first expansion beam 171 and the first wall 113 is a first space 115, and the space within the box 11 between the first expansion beam 171 and the second wall 114 is a second space 116. The battery cell assembly 2 is located within the second space 116 and abuts the first expansion beam 171. The first space 115 is used to install high-voltage electrical equipment, etc. It is worth noting that the first direction X and the second direction Y are perpendicular, with one being the length of the box 11 and the other being the width. The height of the box 11 is a third direction Z, which is perpendicular to the first and second directions X and Y and is the spacing between the bottom wall 111 and the box cover 12.

[0217] The heat exchange assembly 3 includes a heat exchanger 31, an adapter 32 and a connecting pipe 33. The heat exchanger 31 is arranged outside the box body 11 and is located between the bottom guard plate 14 and the bottom wall 111 of the box body 11. The adapter 32 is arranged inside the box body 11 and is located in the first space 115. The connecting pipe 33 passes through the bottom wall 111 of the box body 11. The upper end of the connecting pipe 33 is plugged into the adapter 32, and the lower end of the connecting pipe 33 is plugged into the heat exchanger 31. The heat exchanger 31 defines a first flow channel 310, the adapter 32 defines a second flow channel 320, and the connecting pipe 33 connects the first flow channel 310 and the second flow channel 320.

[0218] 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 21 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, thereby better ensuring the capacity of the battery 100.

[0219] Moreover, by embedding the adapter 32 into the box body 11 and providing a connecting pipe 33 that passes through the box body 11 to connect the adapter 32 with the heat exchange element 31 outside the box body 11, the heat exchange element 31 can realize the introduction and discharge of fluid through the adapter 32 inside the box body 11. In this way, there is no need to provide an external inlet and outlet liquid path outside the box body 11 that is connected to the heat exchange element 31, and there is no need to increase the sealing difficulty in order to meet the extension requirements of the external inlet and outlet liquid path. Therefore, the sealing difficulty of the battery 100 can be reduced, the structure and cost of the battery 100 can be simplified, and the sealing reliability can be improved.

[0220] The adapter 32 can be an injection-molded or metal part and includes a flange portion 321 and a connector portion 322. The flange portion 321 includes a flange plate 3211 and an insert 3212 mounted on the flange plate 3211. The connector portion 322 is an elbow and includes a plug section 3221 and a pipe section 3222. The elbow is bent at the junction of the plug section 3221 and the pipe section 3222. The heat exchanger 31 is a bent flat tube structure with a connection hole 311. The connecting pipe 33 is a circular tube.

[0221] During installation, one end of the connecting tube 33 is inserted into the connecting hole 311, directly connecting the heat exchanger 31 and the connecting tube 33. The heat exchanger 31 and the connecting tube 33 can then be welded together. The connecting tube 33 is then passed from bottom to top through the first hole 1111 in the bottom wall 111 of the housing 11. The heat exchanger 31 and the bottom wall 111 are bonded or directly welded using the adhesive layer 15, integrating the heat exchanger 31 with the bottom wall 111 while improving temperature control performance. The plug-in section 3221 of the adapter 32 is then fitted over the connecting tube 33, and the flange 321 is welded to the bottom wall 111 and / or secured with rivets or bolts extending through the second hole 1112 in the bottom wall 111 and the insert 3212.

[0222] The mating interface between the flange portion 321 and the bottom wall 111 is sealed by a first seal 34, and the mating interface between the joint portion 322 and the connecting tube 33 is sealed by two second seals 35 interference fit, thereby reducing the risk of leakage due to seal failure, improving the sealing of the heat exchange liquid when it enters the battery 100 for circulation, and improving the reliability of the battery 100.

[0223] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0224] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery, characterized in that: include: The box assembly comprises a box; the box comprises a bottom wall; A battery cell assembly is disposed in the box and includes a plurality of battery cells; a heat exchange assembly comprising a heat exchange member, an adapter, and a connecting pipe, wherein the heat exchange member is disposed below the bottom wall and defines a first flow channel, the adapter is disposed within the housing and defines a second flow channel, and the connecting pipe passes through the bottom wall and connects the first flow channel with the second flow channel; The connecting pipe is plugged into and matched with the heat exchange element; A connecting hole is formed on a side of the heat exchange element facing the box body, and an end portion of the connecting pipe located outside the box body has an extension section, and the extension section is inserted into the connecting hole; The end portion of the connecting pipe located outside the box further has a step, and the step abuts against a surface of the heat exchange element on one side facing the box.

2. The battery according to claim 1, characterized in that The adapter includes a flange portion and a joint portion, the joint portion defines the second flow channel and is connected to the connecting pipe, the flange portion is connected to the outer periphery of the joint portion and abuts against the inner wall of the box body, and the adapter is fixedly connected to the box body through the flange portion.

3. The battery according to claim 2, characterized in that The flange portion includes a flange plate and an embedded component provided on the flange plate, and the flange portion is connected to the box body via a connecting component penetrating the embedded component.

4. The battery according to claim 2 or 3, characterized in that A first sealing member is provided between the flange portion and the box body for sealing, and the first sealing member is arranged around the matching surface between the joint portion and the connecting pipe.

5. The battery according to claim 4, characterized in that The flange portion is provided with a first annular groove, and the first sealing component is a first sealing ring and is embedded in the first annular groove.

6. The battery according to any one of claims 2 to 3, characterized in that The connecting pipe is inserted into the joint portion.

7. The battery according to claim 6, characterized in that The joint portion includes an inserting section and a connecting section. The joint portion is in the form of an elbow and is bent at the connection between the inserting section and the connecting section. The connecting pipe is inserted into the inserting section, and a transfer tube is provided on the outer sleeve of the connecting section.

8. The battery according to claim 1, characterized in that The heat exchange component further includes: A second sealing member is sealingly fitted between the adapter and the connecting pipe.

9. The battery according to claim 8, characterized in that The connecting pipe is inserted into the adapter, and the second sealing member is arranged around the connecting pipe.

10. The battery according to claim 9, characterized in that The adapter is provided with a second annular groove, and the second sealing member is a second sealing ring and is embedded in the second annular groove.

11. The battery according to any one of claims 8 to 10, characterized in that There are multiple second sealing members, which are spaced apart along the axial direction of the connecting pipe.

12. The battery according to claim 11, characterized in that The connecting pipe includes a pipe body. Taking the cross section of the connecting pipe as the projection surface, the projection of the stage exceeds the projection outline range of the pipe body, and the projection of the extension section is located within the projection outline range of the pipe body.

13. The battery according to claim 1, characterized in that The connecting pipe is connected to the heat exchange element by welding, and the heat exchange element is connected to the box body by bonding or welding.

14. The battery according to claim 1, characterized in that The box assembly also includes: A bottom guard plate is provided below the bottom wall of the box body, and the heat exchange component is provided between the bottom wall and the bottom guard plate.

15. The battery according to claim 14, characterized in that The box assembly also includes: A sealing member is sealingly fitted between the bottom wall and the bottom guard plate and comprises an outer peripheral portion arranged around the heat exchange member, and the connecting pipe passes through the bottom wall in an inner ring area corresponding to the outer peripheral portion.

16. The battery according to claim 14 or 15, characterized in that Adhesive layers are respectively provided between the heat exchange component and the bottom wall and the bottom guard plate.

17. The battery according to claim 14 or 15, characterized in that The heat exchange element includes at least one bent and extended heat exchange tube, and the box assembly further includes: The foaming part is arranged between the bottom wall and the bottom guard plate, and includes a first foaming portion arranged around the heat exchange element, and a second foaming portion arranged between adjacent tube sections of the same heat exchange tube or between adjacent heat exchange tubes.

18. The battery according to claim 17, characterized in that The foaming member is connected to the bottom guard plate, and the upper surface of the heat exchange member is higher than the upper surface of the foaming member.

19. The battery according to claim 1, characterized in that The first flow channel has a first port and a second port, and the heat exchange element has a connecting hole connected to the connecting pipe. There are two connecting holes, one of which corresponds to the first port and the other corresponds to the second port. There are two adapters and two connecting pipes respectively, and each connecting hole corresponds to one connecting pipe and one adapter.

20. The battery according to claim 19, characterized in that The first flow channel includes a plurality of heat exchange flow channels arranged in parallel, one end of the plurality of heat exchange flow channels converges to the first port, and the other end of the plurality of heat exchange flow channels converges to the second port.

21. The battery according to claim 1, 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 and a second 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 bent and connected to the second heat exchange section, and the second heat exchange section is located at the outermost side of the circumference of the first heat exchange channel.

22. The battery according to claim 21, characterized in that The battery cell assembly includes a plurality of battery cells arranged along a first direction, each of the battery cells 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.

23. The battery according to claim 21 or 22, 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 area.

24. The battery according to claim 23, characterized in that At least one of the second heat exchange channels is bent to form a second U-shaped area, and at least a portion of the first heat exchange section is disposed within the second U-shaped area.

25. The battery according to claim 1, characterized in that The heat exchange element includes 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.

26. The battery according to claim 1, characterized in that The heat exchanger includes a main body and a connecting part. The main body includes a plurality of first tubes arranged at intervals along a first direction and extending along a second direction. The connecting part is connected to one end of the main body in the second direction. The heat exchanger has a connecting hole connected to the connecting tube, and the connecting hole is provided on the connecting part.

27. The battery according to claim 26, characterized in that The connecting portion includes third tubes located on both sides of the connecting hole in the first direction, and two third tubes on both sides of at least one connecting hole extend away from each other in a direction from the connecting hole to the main body.

28. The battery according to claim 1, characterized in that The box body is an integral stamped part and includes a bottom wall and a surrounding wall. A receiving space is formed between the bottom wall and the surrounding wall, and the battery cell is installed in the receiving space.

29. The battery according to claim 1, characterized in that The battery thermal management system further includes a temperature regulating component disposed in the box body, wherein the temperature regulating component is disposed at at least one of the bottom, top, and side of the battery cell.

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

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