Battery devices and power-consuming devices

Abstract

This application discloses a battery device and an electrical device. The battery device comprises: a multi-layer battery pack arranged sequentially along a first direction; a housing defining a mounting cavity, the housing having a mounting sidewall located on one side of the mounting cavity along a second direction, the mounting sidewall forming an assembly space; multiple heat exchange sections disposed within the mounting cavity, each heat exchange section exchanging heat with at least one battery pack; and a connecting mechanism fixed to the mounting sidewall, the connecting mechanism communicating with all multiple heat exchange sections, at least a portion of the connecting mechanism being assembled within the assembly space. Therefore, by fixing the connecting mechanism to the mounting sidewall, the number of battery cells within the mounting cavity can be increased, which is beneficial for improving the energy density of the battery device and also for improving the space utilization rate of the mounting cavity within the battery device. Furthermore, since at least a portion of the connecting mechanism is assembled within the assembly space, it is beneficial for reducing the space occupied by the connecting mechanism within the mounting cavity and reducing the risk of interference between the connecting mechanism and the battery pack.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a battery device and an electrical device having the battery device. Background Technology

[0002] In related technologies, existing battery devices include a housing and multiple battery cells. The housing defines an installation cavity, and the multiple battery cells are installed in the installation cavity, forming a multi-layer battery pack. The multi-layer battery pack is arranged sequentially along the height of the housing. A heat exchange section is provided in the installation cavity, which exchanges heat with the battery pack. A communication mechanism is provided at the middle position of the top wall of the housing, which communicates with the heat exchange section to allow the heat exchange medium to flow in and out of the heat exchange section. Because the communication mechanism is located at the middle position of the top wall of the housing, it occupies the space in the middle position of the installation cavity used to install the uppermost battery pack, resulting in a smaller number of battery cells installed in the uppermost battery pack, thus affecting the energy density of the battery device. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a battery device that is advantageous in improving the energy density of the battery device and also in improving the space utilization of the mounting cavity within the battery device.

[0004] This application also proposes an electrical device.

[0005] In a first aspect, embodiments of this application provide a battery device, including:

[0006] A multi-layer battery pack, each layer of which includes multiple battery cells arranged on a first plane, the multi-layer battery pack being arranged sequentially along a first direction, the first direction intersecting the first plane;

[0007] The housing defines a mounting cavity for mounting a multi-layer battery pack. The housing has a mounting sidewall located on one side of the mounting cavity along a second direction. The mounting sidewall forms an assembly space that opens toward the mounting cavity. The first direction and the second direction intersect.

[0008] Multiple heat exchange sections are disposed in the mounting cavity and arranged sequentially along a first direction, and each heat exchange section exchanges heat with at least one battery pack.

[0009] A connecting mechanism is fixed to the mounting side wall and is connected to multiple heat exchange sections, so that heat exchange medium flows into multiple heat exchange sections through the connecting mechanism and heat exchange medium in multiple heat exchange sections flows out through the connecting mechanism. At least a part of the connecting mechanism is assembled in the assembly space.

[0010] In the above technical solution, by fixing the connecting mechanism to the mounting side wall, the number of battery cells in the mounting cavity can be increased compared with the prior art, which is beneficial to improving the energy density of the battery device and also beneficial to improving the space utilization of the mounting cavity in the battery device. Furthermore, at least part of the connecting mechanism is assembled in the mounting space, which is beneficial to reducing the space occupied by the connecting mechanism in the mounting cavity and reducing the risk of interference between the connecting mechanism and the battery pack.

[0011] In some embodiments, the enclosure includes an enclosure body, an enclosure cover, and a mounting side panel. The enclosure body, the enclosure cover, and the mounting side panel together define a mounting cavity. Along a first direction, the enclosure cover and the mounting side panel are located on the same side of the enclosure body. The enclosure body has a first side wall that is opposite to the mounting side panel along the first direction. The first side wall and the mounting side panel are connected to form a mounting side wall. The first side wall defines an assembly space. A portion of the communication mechanism is located on the mounting side panel.

[0012] In the above technical solution, by placing the cover and mounting side panel on the same side of the enclosure body, it is easier to assemble the enclosure body, cover, and mounting side panel to define the mounting cavity, thus making the relative positions of the enclosure body, cover, and mounting side panel more reasonable. Furthermore, by placing part of the connecting mechanism on the mounting side panel, it is more advantageous to reduce the space occupied by the connecting mechanism within the mounting cavity, allowing more battery cells to be arranged within the mounting cavity, which is more conducive to improving the energy density of the battery device. It also further reduces the risk of interference between the connecting mechanism and the battery pack, thus facilitating the arrangement of the connecting mechanism.

[0013] In some embodiments, a portion of the connecting mechanism is located on the side of the mounting side plate opposite to the mounting cavity.

[0014] In the above technical solution, by setting part of the connecting mechanism on the side of the mounting plate away from the mounting cavity, and the part of the connecting mechanism is located outside the mounting cavity, the space occupied by the connecting mechanism in the mounting cavity is further reduced, which is conducive to increasing the space for arranging battery cells in the mounting cavity, thereby allowing more battery cells to be installed in the mounting cavity, which is more conducive to improving the energy density of the battery device, and also more conducive to improving the space utilization rate of the mounting cavity in the battery device, thus making the setting position of the connecting mechanism reasonable.

[0015] In some embodiments, the communication mechanism includes: a plurality of communication joints, the plurality of communication joints being disposed on the side of the mounting side plate away from the mounting cavity, a portion of the plurality of communication joints being configured as a medium inflow joint, another portion of the plurality of communication joints being configured as a medium outflow joint, each medium inflow joint being connected to a plurality of heat exchange sections to allow heat exchange medium to flow into the plurality of heat exchange sections, and each medium outflow joint being connected to a plurality of heat exchange sections to allow heat exchange medium in the plurality of heat exchange sections to flow out.

[0016] In the above technical solution, by setting multiple connecting joints, the heat exchange medium can flow in and out of the heat exchange section, allowing it to continuously remove heat from the battery device. This also simplifies the structure of the connecting mechanism, facilitates the manufacturing of the battery device, reduces assembly difficulty, and lowers manufacturing costs. Furthermore, placing the multiple connecting joints on the side of the mounting plate away from the mounting cavity allows for the placement of part of the connecting mechanism on that side.

[0017] In some embodiments, a plurality of connecting joints are arranged sequentially along a third direction, and the first direction intersects with both the second direction and the third direction.

[0018] In the above technical solution, by arranging multiple connecting joints sequentially along a third direction, the arrangement of multiple connecting joints can be made reasonable, and the space of the battery device along the third direction can be effectively utilized. Compared with arranging multiple connecting joints sequentially along a second direction, the size of the battery device along the second direction can be effectively reduced, making it easier to install the battery device on the power device. Compared with arranging multiple connecting joints sequentially along a first direction, the risk of mutual interference between multiple connecting pipes is reduced, the arrangement of connecting pipes is facilitated, the assembly difficulty of the battery device is reduced, and the assembly efficiency of the battery device is improved.

[0019] In some embodiments, each connecting connector has a first interface, the first interface of the medium inflow connector is the medium inlet, the first interface of the medium outflow connector is the medium outlet, and the orientation of the medium inlet and the orientation of the medium outlet are the same.

[0020] In the above technical solution, by aligning the orientation of the medium inlet and the medium outlet, construction personnel do not need to repeatedly adjust the pipeline route during pipeline connection operations. This allows for quick and accurate pipeline connection, reducing connection time and improving the assembly efficiency of the battery device. It also reduces the risk of pipeline leakage due to complex connections, laying a solid foundation for the efficient and stable operation of the entire thermal management system of the battery device.

[0021] In some embodiments, the media inlet and media outlet are arranged along a third direction.

[0022] In the above technical solution, by arranging the medium inlet and medium outlet along a third direction, so that the medium inlet and medium outlet are arranged on the same side of the battery device along a third direction, the construction personnel do not need to repeatedly adjust the pipeline route when performing pipeline connection work, and can complete the pipeline connection more quickly and accurately. This is conducive to further reducing the pipeline connection time, further improving the assembly efficiency of the battery device, and further reducing the risk of pipeline leakage caused by the complexity of pipeline connection.

[0023] In some embodiments, the mounting side panel includes: a first plate and a second plate, the first plate being located on the side of the second plate opposite to the housing body along a first direction, the first plate and the second plate being bent together to form a mounting space on the side of the first plate opposite to the mounting cavity, and at least a portion of each connecting joint being located within the mounting space.

[0024] In the above technical solution, by bending and connecting the first plate and the second plate to form an installation space on the side of the first plate away from the mounting cavity, the mounting side plate can be recessed into the mounting cavity, and at least part of each connecting joint is located in the installation space. This is beneficial to further reduce the size of the battery device along the second direction, and can make the structure of the battery device more compact, thereby helping to reduce the volume of the battery device.

[0025] In some embodiments, each connecting joint has a second interface, which is connected to the first interface of the corresponding connecting joint, and the second interface is used to connect to the corresponding heat exchange section.

[0026] In the above technical solution, the connecting joint is provided with a second interface, which can realize the effect of connecting the connecting joint and the corresponding heat exchange part. The first interface and the second interface of the medium inflow joint are connected, which can realize the effect of the heat exchange medium flowing into the corresponding heat exchange part along the first interface and the second interface. The first interface and the second interface of the medium outflow joint are connected, which can realize the effect of the heat exchange medium in the heat exchange part flowing out through the second interface and the first interface.

[0027] In some embodiments, each connecting joint has multiple second interfaces, and the multiple second interfaces and multiple heat exchange sections are connected in a one-to-one correspondence.

[0028] In the above technical solution, the multiple second interfaces of each connecting joint are respectively connected to multiple heat exchange parts one by one. This is beneficial to make the heat exchange medium flow into multiple heat exchange parts evenly through the medium inflow joint, which is beneficial to improve the heat exchange consistency of the heat exchange parts, reduce the temperature difference of the multi-layer battery pack, improve the reliability of the battery device, and also facilitate the synchronous flow of the heat exchange medium in multiple heat exchange parts into the medium outflow joint.

[0029] In some embodiments, the mounting side plate is formed with a plurality of clearance structures, and the plurality of clearance structures and a plurality of connecting joints correspond one-to-one. Each clearance structure includes a clearance hole communicating with the mounting cavity, and a plurality of second interfaces of the connecting joints correspond to the clearance holes of the corresponding clearance structures.

[0030] In the above technical solution, multiple clearance structures are formed by mounting side plates. Each clearance structure includes a clearance hole that communicates with the mounting cavity. Multiple second interfaces of the connecting joint correspond to the clearance holes of the corresponding clearance structures, which facilitates the connection of the connecting pipe to the second interface of the corresponding connecting joint and the corresponding heat exchange part, reduces the assembly difficulty of the connecting pipe, thereby reducing the assembly difficulty of the battery device, and thus helps to improve the assembly efficiency of the battery device and increase the production efficiency of the battery device.

[0031] In some embodiments, each clearance structure includes multiple clearance holes, and multiple second interfaces of the connecting connector correspond one-to-one with the multiple clearance holes of the corresponding clearance structure.

[0032] In the above technical solution, by setting multiple second interfaces of the connecting joint to multiple avoidance holes of the corresponding avoidance structure one by one, the risk of interference between the connecting joint and multiple connecting pipes of multiple heat exchange parts is reduced. This makes it easier for the connecting pipes to connect the second interfaces of the corresponding connecting joint and the corresponding heat exchange parts, further reducing the assembly difficulty of the connecting pipes, thereby further reducing the assembly difficulty of the battery device, which in turn is more conducive to improving the assembly efficiency of the battery device and further improving the production efficiency of the battery device.

[0033] In some embodiments, each clearance structure includes two clearance holes, which are a first clearance hole and a second clearance hole, respectively. A first clearance hole is formed on a first plate and a second clearance hole is formed on a second plate.

[0034] Each connecting joint has two second interfaces. The side of the connecting joint facing the first plate and the side facing the second plate each have a second interface, and the two second interfaces correspond to the corresponding first clearance hole and second clearance hole, respectively.

[0035] In the above technical solution, a first clearance hole is formed on the first plate and a second clearance hole is formed on the second plate. A second interface is formed on the side of the connecting joint facing the first plate and the side facing the second plate, respectively. This allows multiple second interfaces of the connecting joint to be arranged on different sides of the connecting joint, so that the two second interfaces of each connecting joint correspond to the corresponding first clearance hole and second clearance hole, respectively. This makes the arrangement of the second interfaces and clearance holes of the connecting joint reasonable, and facilitates the connection of the connecting pipe to the second interface of the corresponding connecting joint and the corresponding heat exchange part.

[0036] In some embodiments, each connecting joint has a first connecting post formed on the side facing the second plate, the first connecting post has a second interface, and the first connecting post passes through the second clearance hole.

[0037] In the above technical solution, the first connecting post of the connecting joint passes through the corresponding second clearance hole. The first connecting post can extend into the installation cavity, which facilitates the connection of the connecting pipe to the first connecting post and the corresponding heat exchange part, further improving the connection efficiency of the connecting pipe. In addition, the first connecting post can abut against the inner side wall of the second clearance hole for limitation, which can reliably fix the connecting joint to the installation side plate.

[0038] In some embodiments, the communication mechanism further includes: a plurality of communication structures, at least a portion of which are disposed within the assembly space, the plurality of communication structures and a plurality of communication connectors corresponding one-to-one, and the communication structure connecting the corresponding communication connector and a plurality of heat exchange parts.

[0039] In the above technical solution, by setting multiple connecting structures, each connecting structure can connect a corresponding connecting joint and multiple heat exchange parts, achieving the effect of connecting the corresponding connecting joint and multiple heat exchange parts. Furthermore, multiple connecting structures can be produced using the same mold, which helps to reduce the manufacturing cost of the battery device. In addition, at least part of the multiple connecting structures are located within the assembly space, reducing the space occupied by the multiple connecting structures within the mounting cavity.

[0040] In some embodiments, the plurality of heat exchange sections include: a first heat exchange section and a second heat exchange section. Along a first direction, the first heat exchange section is located between the cover and the second heat exchange section. The communication structure includes a first communication pipe and a second communication pipe. The first communication pipe connects the first heat exchange section and the second interface of the corresponding communication connector facing the first plate. The second communication pipe connects the second heat exchange section and the second interface of the corresponding communication connector facing the second plate. The second communication pipe is disposed in the assembly space.

[0041] In the above technical solution, by setting up a first heat exchange section, a second heat exchange section, a first connecting pipe, and a second connecting pipe, and with a second interface formed on both the side of the connecting joint facing the first plate and the side facing the second plate, the risk of interference between the first and second connecting pipes can be reduced. This allows for full utilization of the space within the mounting cavity, making the overall structure of the battery device more compact and rational. Furthermore, the second connecting pipe is located within the assembly space, reducing its footprint within the mounting cavity.

[0042] In some embodiments, the first sidewall includes a sidewall body, the sidewall body and the mounting side plate are arranged and connected along a first direction, the assembly space is located between the mounting cavity and the sidewall body along a second direction, the second connecting pipe extends along the first direction, the inner surface of the sidewall body is formed with an avoidance groove, and at least a portion of the second connecting pipe is located in the avoidance groove.

[0043] In the above technical solution, by forming a clearance groove on the side wall body, at least a part of the structure of the second connecting pipe of the connecting structure can be assembled in the corresponding clearance groove, reducing the space occupied by the second connecting pipe in the assembly space, allowing more space in the mounting cavity to install battery cells, which is conducive to further improving the energy density of the battery device, and also conducive to further improving the space utilization rate of the mounting cavity in the battery device, and can also make the overall structure of the battery device more compact.

[0044] In some embodiments, the first sidewall further includes a mounting boss, which is formed on the inner surface of the sidewall body near the mounting cavity, so that the sidewall body and the mounting boss together define an assembly space. The mounting boss has a mounting hole that penetrates the mounting boss along a first direction. Along the first direction, the mounting boss and the second plate are opposite each other, and the assembly space is located between the mounting boss and the second plate. The second heat exchange part is located on the side of the mounting boss away from the cover. The second heat exchange part has a second connecting post protruding towards the mounting boss. The second connecting post passes through the mounting hole, and the second connecting pipe and the second connecting post are connected to communicate with the second heat exchange part.

[0045] In the above technical solution, by forming a mounting boss on the inner surface of the sidewall body, the first sidewall defines the assembly space. The mounting boss can limit the second heat exchange part, reducing the risk of the second heat exchange part moving towards the first heat exchange part. Furthermore, the second connecting post passes through the mounting hole, which facilitates the connection between the second connecting pipe and the corresponding heat exchange part, further improving the connection efficiency of the second connecting pipe. In addition, the second connecting post can abut against the inner sidewall of the mounting hole to limit the second heat exchange part, which can reliably fix the second heat exchange part in the mounting cavity.

[0046] In some embodiments, the connecting joint has a mounting portion, the mounting portion has a first mounting hole, the first connecting pipe has a mounting flange, the mounting flange has a second mounting hole, and fasteners are inserted through the second mounting hole and assembled into the first mounting hole to fix the first connecting pipe to the mounting portion.

[0047] In the above technical solution, the connecting joint has an installation part, which can reliably fix the first connecting pipe to the connecting joint, thereby making the first connecting pipe reliably connected to the corresponding second interface.

[0048] In some embodiments, there are multiple mounting parts, which are arranged around the second interface on the corresponding side of the connecting joint.

[0049] In the above technical solution, by setting multiple mounting parts and arranging the multiple mounting parts around the second interface on the corresponding side of the connecting joint, the first connecting pipe can be more reliably fixed to the connecting joint, thereby making the first connecting pipe more reliably connected to the corresponding second interface.

[0050] In some embodiments, the mounting side plate is sandwiched between the box cover and the box body, and the mounting side plate is fixed to at least one of the box body and the box cover.

[0051] In the above technical solution, by clamping the mounting side plate between the cover and the main body of the battery pack, the mounting side plate, the cover, and the main body of the battery pack can jointly define the mounting cavity. By fixing the mounting side plate to at least one of the main body of the battery pack and the cover, the mounting side plate, the cover, and the main body of the battery pack can be assembled into a whole, which helps to improve the structural strength of the battery device.

[0052] In some embodiments, the lid has a second sidewall, the first sidewall, the mounting sideplate and the second sidewall are arranged along a first direction, and the mounting sideplate is sandwiched between the first sidewall and the second sidewall.

[0053] In the above technical solution, by installing the side plate between the first side wall and the second side wall, the side plate can be positioned on one side of the mounting cavity along the second direction, thus making the arrangement of the side plate reasonable.

[0054] In some embodiments, the second sidewall is formed with a first mounting notch, at least a portion of the mounting side plate is adapted to the shape of the first mounting notch, and the mounting side plate is mounted to the first mounting notch.

[0055] In the above technical solution, the first assembly notch is formed by the second sidewall, which enables the mounting side plate to be assembled into the first assembly notch, reducing the risk of interference between the cover and the mounting side plate. Furthermore, by adapting at least a portion of the mounting side plate to the shape of the first assembly notch, the second sidewall and the mounting side plate can be adapted, making it easier for the mounting side plate to cover the first assembly notch, and making it easier for the mounting side plate, the cover, and the body of the box to jointly define the mounting cavity.

[0056] In some embodiments, the second sidewall has a mounting flange disposed along the edge of the first assembly notch, and the end face of the mounting side plate facing the second sidewall has a mounting structure opposite to the mounting flange, and the mounting structure is fixed to the mounting flange.

[0057] In the above technical solution, the second side wall has an installation flange, and the end face of the installation side plate facing the second side wall has an installation structure, which facilitates the installation flange and the installation structure to be assembled together, thereby facilitating the fixed assembly of the second side wall and the installation side plate, and making the installation flange and the installation structure set in a reasonable position.

[0058] In some embodiments, the mounting flange and the shape of the mounting structure are adapted.

[0059] In the above technical solution, by adapting the shape of the mounting flange and the mounting structure, it is beneficial to reliably assemble the mounting flange and the mounting structure, and also facilitates sealing of the gap between the mounting flange and the mounting structure.

[0060] In some embodiments, the housing body further has two third sidewalls, which are spaced apart along a third direction. A first sidewall is located between the two third sidewalls and, along a first direction, the third sidewall has a protrusion that protrudes from the first sidewall toward the lid. A second mounting notch is formed at the inner corner of the protrusion. The mounting sideplate is located between the two third sidewalls and is mounted to the second mounting notch so that the third sidewall restricts the mounting sideplate from moving toward the mounting cavity along a second direction.

[0061] In the above technical solution, the third sidewall has a protrusion that protrudes from the first sidewall toward the box cover. A second assembly notch is formed at the inner corner of the protrusion. After the mounting side plate is assembled into the second assembly notch of the two third sidewalls, the third sidewall and the mounting side plate abut and limit each other along the second direction. The third sidewall can restrict the mounting side plate from moving toward the mounting cavity along the second direction, thereby making the mounting side plate assembly more stable.

[0062] In some embodiments, the heat exchange section is configured as a heat exchange plate.

[0063] In the above technical solution, by constructing the heat exchange part as a heat exchange plate, it is beneficial to increase the heat exchange area between the heat exchange part and the battery pack, and improve the heat exchange effect between the heat exchange part and the battery cell.

[0064] In some embodiments, the battery device further includes an electrical connection mechanism fixed to the mounting side plate and located on the side of the mounting side plate opposite to the mounting cavity.

[0065] In the above technical solution, by placing the electrical connection mechanism on the side of the mounting plate away from the mounting cavity, the risk of the electrical connection mechanism occupying the space inside the mounting cavity is reduced. This is more conducive to increasing the space for arranging battery cells inside the mounting cavity, thereby allowing more battery cells to be installed inside the mounting cavity. This is more conducive to improving the energy density of the battery device and also to improving the space utilization rate of the mounting cavity inside the battery device, thus making the placement of the electrical connection mechanism reasonable.

[0066] Secondly, embodiments of this application also provide an electrical device, including the battery device described above.

[0067] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. Attached Figure Description

[0068] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0069] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0070] Figure 2 This is a schematic diagram of a battery device according to an embodiment of this application;

[0071] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0072] Figure 4 This is an assembly diagram of the first heat exchanger, the second heat exchanger, the battery pack, and the communication mechanism according to an embodiment of this application.

[0073] Figure 5 This is an assembly diagram of the first heat exchange section, the second heat exchange section, the mounting side plate, the connecting structure, the connecting joint, and the first side wall according to an embodiment of this application.

[0074] Figure 6 yes Figure 5 Enlarged view at point B in the middle;

[0075] Figure 7 This is another angle view of the assembly of the first heat exchange section, the second heat exchange section, the mounting side plate, the connecting structure, the connecting joint and the first side wall according to an embodiment of this application;

[0076] Figure 8 yes Figure 7 Enlarged view at point C;

[0077] Figure 9 This is an assembly diagram of the first heat exchanger, the second heat exchanger, the connecting structure, and the connecting joint according to an embodiment of this application.

[0078] Figure 10 yes Figure 9 Enlarged view at point D;

[0079] Figure 11 This is a schematic diagram of the mounting side panel according to an embodiment of this application;

[0080] Figure 12 This is a schematic diagram of the first sidewall according to an embodiment of this application;

[0081] Figure 13 This is a schematic diagram of a connecting joint according to an embodiment of this application;

[0082] Figure 14 This is a schematic diagram of a battery cell according to an embodiment of this application;

[0083] Figure 15 This is a schematic diagram of a box lid according to an embodiment of this application.

[0084] Figure label:

[0085] Battery device 100;

[0086] 10 battery cells;

[0087] Box 20;

[0088] Box body 21; First side wall 211; Side wall body 2111; Clearance groove 212; Mounting boss 213; Mounting hole 214; Third side wall 215; Protrusion 216; Second assembly notch 217;

[0089] Box cover 22; second side wall 221; first assembly notch 222; mounting flange 223; first assembly hole 224;

[0090] Mounting sidewall 23; Assembly space 231;

[0091] Side panel 30; First plate 31; Second plate 32; Mounting space 33; Mounting structure 34; Second assembly hole 35;

[0092] Heat exchange section 40; First heat exchange section 41; Second heat exchange section 42; Second connecting column 43; Heat exchange section inlet 44; Heat exchange section outlet 45; Through hole 46; Third assembly hole 47.

[0093] Connecting mechanism 50;

[0094] Connecting connector 51; First interface 511; Second interface 512; First connecting post 513; Mounting part 514; First mounting hole 515;

[0095] Medium inlet connector 52; Medium outlet connector 53;

[0096] 60mm plug;

[0097] Clearance hole 71; First clearance hole 711; Second clearance hole 712;

[0098] Connecting structure 80; First connecting pipe 81; Mounting flange 811; Second connecting pipe 82;

[0099] Electrical connection mechanism 90; battery pack 91;

[0100] Vehicle 200; Controller 201; Motor 202. Detailed Implementation

[0101] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0102] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0103] 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.

[0104] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0105] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, E and / or F can represent: E existing alone, E and F existing simultaneously, or F existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0106] 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.

[0107] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0108] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0109] In this application, "multiple" means two or more (including two).

[0110] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0111] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0112] Battery cells can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to any of these. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to any of these types either.

[0113] The battery device mentioned in the embodiments of this application may include one or more battery packs for providing voltage and capacity. Each battery pack may include multiple battery cells, which are connected in series, parallel, or mixed connection via a busbar.

[0114] In some embodiments, the battery pack is typically formed by arranging multiple battery cells.

[0115] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more battery packs housed within the housing.

[0116] As an example, a battery pack can be housed in a housing by directly fixing multiple individual battery cells to the housing.

[0117] As an example, the enclosure may include an enclosure body and an enclosure cover. The enclosure body and the enclosure cover are fastened together, and the battery pack is installed inside the enclosure.

[0118] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0119] A battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of an anode electrode, a cathode electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the anode and cathode electrodes. The anode electrode includes an anode current collector and an anode active material layer. The anode active material layer is coated on the surface of the anode current collector. The uncoated anode current collector protrudes beyond the coated anode current collector and serves as the anode tab. Taking a lithium-ion battery as an example, the anode current collector can be made of aluminum, and the anode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The cathode electrode includes a cathode current collector and a cathode active material layer. The cathode active material layer is coated on the surface of the cathode current collector. The uncoated cathode current collector protrudes beyond the coated cathode current collector and serves as the cathode tab. The cathode current collector can be made of copper, and the cathode active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple anode tabs stacked together, and there are multiple cathode tabs stacked together.

[0120] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0121] In recent years, battery devices have developed rapidly and can be installed in vehicles, laptops, electric bicycles, electric toys, etc. This application uses the installation of battery devices in new energy vehicles as an example for illustration. In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, battery devices, as the power source of electric vehicles, play an irreplaceable and crucial role. As a core component of new energy vehicles, battery devices have high requirements in terms of reliability.

[0122] In the prior art, a battery device has multiple battery cells housed within its casing. The casing defines an installation cavity where the battery cells are installed, forming a multi-layer battery pack. These multi-layer battery packs are arranged sequentially along the height of the casing. A heat exchange section is located within the installation cavity, exchanging heat with the battery packs. A communication mechanism, connected to the heat exchange section, is located at the center of the top wall of the casing, allowing the heat exchange medium to flow in and out of the heat exchange section. Because the communication mechanism is located at the center of the top wall of the casing, it occupies the space within the installation cavity intended for the central arrangement of the top battery pack, resulting in a smaller number of battery cells in the top battery pack, thus affecting the energy density of the battery device.

[0123] Based on the above considerations, in order to solve the energy density problem of battery devices, a battery device was designed after in-depth research, comprising: a multi-layer battery pack, each layer of the battery pack including multiple battery cells arranged on a first plane, the multi-layer battery pack being arranged sequentially along a first direction, the first direction intersecting the first plane; a housing, the housing defining a mounting cavity for mounting the multi-layer battery pack, the housing having a mounting sidewall along a second direction, the mounting sidewall being located on one side of the mounting cavity, the mounting sidewall forming an assembly space open toward the mounting cavity, the first direction and the second direction intersecting; multiple heat exchange sections, the multiple heat exchange sections being disposed in the mounting cavity and arranged sequentially along the first direction, each heat exchange section exchanging heat with at least one battery pack; a communication mechanism, the communication mechanism being fixed to the mounting sidewall, the communication mechanism communicating with all multiple heat exchange sections, so that heat exchange medium flows into the multiple heat exchange sections through the communication mechanism and heat exchange medium in the multiple heat exchange sections flows out through the communication mechanism, at least a portion of the communication mechanism being assembled within the assembly space. By fixing the connecting mechanism to the mounting sidewall, the number of battery cells in the mounting cavity can be increased compared with the prior art, which is beneficial to improving the energy density of the battery device and the space utilization of the mounting cavity in the battery device. Furthermore, since at least part of the connecting mechanism is assembled in the mounting space, it is beneficial to reduce the space occupied by the connecting mechanism in the mounting cavity and reduce the risk of interference between the connecting mechanism and the battery pack.

[0124] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 200 provided in some embodiments of this application. The vehicle 200 can be a gasoline-powered vehicle or a new energy vehicle; a new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery device 100 is mounted on the chassis of the vehicle 200. The battery device 100 can be used to power the vehicle 200; for example, the battery device 100 can serve as the operating power source for the vehicle 200. The vehicle 200 may also include a controller 201 and a motor 202. The controller 201 is used to control the battery device 100 to supply power to the motor 202, for example, to meet the power needs of the vehicle 200 during starting, navigation, and driving.

[0125] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 200, but also as the driving power source for the vehicle 200, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200.

[0126] Reference below Figures 2-15 The battery device 100 according to an embodiment of this application will be described, taking the battery device 100 installed in the chassis of a vehicle 200 as an example.

[0127] like Figures 2-15 As shown, the battery device 100 according to an embodiment of this application includes:

[0128] A multi-layer battery pack 91, each layer of which includes a plurality of battery cells 10 arranged on a first plane, the multi-layer battery packs 91 being arranged sequentially along a first direction intersecting the first plane; a housing 20 defining a mounting cavity for mounting the multi-layer battery packs 91, the housing 20 having a mounting sidewall 23 located on one side of the mounting cavity along a second direction, the mounting sidewall 23 forming an assembly space 231 open toward the mounting cavity, the first direction and the second direction intersecting; a plurality of heat exchange sections 40 disposed within the mounting cavity and arranged sequentially along the first direction, each heat exchange section 40 exchanging heat with at least one battery pack 91;

[0129] The connecting mechanism 50 is fixed to the mounting side wall 23 and is connected to multiple heat exchange sections 40 so that the heat exchange medium flows into the multiple heat exchange sections 40 through the connecting mechanism 50 and the heat exchange medium in the multiple heat exchange sections 40 flows out through the connecting mechanism 50. At least a portion of the connecting mechanism 50 is assembled in the assembly space 231.

[0130] The battery device 100 includes a housing 20, a connecting mechanism 50, a multi-layer battery pack 91, and multiple heat exchange sections 40. The battery pack 91 can be configured with two, three, or four layers, and each layer of the battery pack 91 can include multiple individual battery cells 10. The multiple battery cells 10 of each layer of the battery pack 91 are arranged on a first plane, which is described in this application using a horizontal plane as an example. For example, ... Figure 4 As shown, multiple battery cells 10 of at least one layer of battery pack 91 can form multiple battery modules, each battery module including multiple battery cells 10. As an example, the multiple battery cells 10 of at least one layer of battery pack 91 can be arranged sequentially along a direction parallel to the first plane. The multi-layer battery pack 91 is arranged sequentially along a first direction, which intersects the first plane. The angle between the first direction and the first plane can be one of an acute angle, an obtuse angle, and a right angle. This application uses a right angle between the first direction and the first plane as an example, that is, an example where the first direction is perpendicular to the first plane. When the battery device 100... Figure 2 When placed in the direction shown, the first direction is Figure 2 The Z direction in this context can also be understood as the first direction being the height direction of the battery device 100; in other words, the first direction is... Figure 2 The vertical direction within the structure. This application uses the height direction of the battery device 100 as an example for illustration.

[0131] The housing 20 defines a mounting cavity for mounting a multi-layer battery pack 91. The housing 20 has a mounting sidewall 23 located on one side of the mounting cavity along a second direction. The mounting sidewall 23 forms an assembly space 231 open towards the mounting cavity. Along the second direction, the assembly space 231 is located on the side of the mounting sidewall 23 facing the mounting cavity; in other words, the assembly space 231 is located between the mounting sidewall 23 and the mounting cavity. The assembly space 231 and the mounting cavity are adjacent and connected. The first and second directions intersect, and the angle between the first and second directions can be one of an acute angle, an obtuse angle, and a right angle. This application uses a right angle between the first and second directions as an example, i.e., the first direction is perpendicular to the second direction. As an example, the second direction and the first plane can be one of an acute angle, an obtuse angle, and a right angle. As another example, the second direction is parallel to the first plane. This application uses the parallelism of the second direction to the first plane as an example.

[0132] The heat exchange section 40 can be set to two, three, four, or other quantities. The number of heat exchange sections 40 can be reasonably selected according to the actual situation. Multiple heat exchange sections 40 are set in the mounting cavity. The heat exchange section 40 can be a heat exchange plate. Multiple heat exchange sections 40 are arranged in a staggered manner along the first direction. A battery pack 91 can be set between any two adjacent heat exchange sections 40. Along the first direction, a battery pack 91 can be set above the uppermost heat exchange section 40 and below the lowermost heat exchange section 40. The heat exchange section 40 is used to exchange heat with the adjacent battery pack 91. Multiple heat exchange sections 40 exchange heat with the corresponding battery pack 91 respectively. It should be noted that the heat exchange section 40 between two adjacent battery packs 91 can exchange heat with at least one adjacent battery pack 91. This application uses the example of a heat exchange section 40 having the same number of heat exchange sections 40 as the battery pack 91, and multiple heat exchange sections 40 corresponding one-to-one with multiple battery packs 91 for heat exchange. Each battery pack 91 is equipped with a heat exchange section 40 for heat exchange, which is beneficial to improving the heat exchange efficiency of the battery cell 10.

[0133] The connecting mechanism 50 is fixed to the mounting sidewall 23. The connecting mechanism 50 can be welded to the mounting sidewall 23, fixed to the mounting sidewall 23 by bolts, or snap-fitted to the mounting sidewall 23. The connecting mechanism 50 communicates with multiple heat exchange sections 40. As an example, the connecting mechanism 50 may include a medium inlet pipe and a medium outlet pipe. The medium inlet pipe communicates with multiple heat exchange sections 40 to allow heat exchange medium to flow into the multiple heat exchange sections 40, and the medium outlet pipe communicates with multiple heat exchange sections 40 to allow heat exchange medium within the multiple heat exchange sections 40 to flow out of the heat exchange sections 40. It should be noted that a heat exchange channel may be provided inside the heat exchange section 40. After the heat exchange medium flows into the heat exchange section 40 through the medium inlet pipe, the heat exchange medium in the heat exchange section 40 flows along the heat exchange channel to the medium outlet pipe. During the flow of the heat exchange medium, it exchanges heat with the corresponding battery cell 10, thereby carrying away the heat of the battery cell 10 and achieving the effect of adjusting the temperature of the battery cell 10. This is beneficial for the battery cell 10 to work at a suitable temperature, thereby improving the reliability of the battery cell 10.

[0134] Along the second direction, the mounting sidewall 23 is located on one side of the mounting cavity. The mounting sidewall 23 can be a sidewall of the mounting cavity, and the first and second directions can be perpendicular, such as... Figure 2 As shown, the second direction is Figure 2 In the X direction. By fixing the connecting mechanism 50 to the mounting side wall 23, the connecting mechanism 50 is disposed on one side of the mounting cavity. Compared with the connecting mechanism 50 being disposed on the top wall of the housing 20, in the first direction, the connecting mechanism 50 does not occupy the arrangement space of the uppermost battery pack 91, which can increase the number of battery cells 10 disposed in the uppermost battery pack 91, which is beneficial to improving the energy density of the battery device 100 and also beneficial to improving the space utilization rate of the mounting cavity within the battery device 100. Furthermore, at least a portion of the structure of the connecting mechanism 50 is assembled within the assembly space 231. This can also be understood as a partial structure of the connecting mechanism 50 being assembled within the assembly space 231, or the entire structure of the connecting mechanism 50 being assembled within the assembly space 231. This application uses the example of a partial structure of the connecting mechanism 50 being assembled within the assembly space 231 for illustration. By assembling at least a portion of the structure of the connecting mechanism 50 within the assembly space 231, it is beneficial to reduce the space occupied by the connecting mechanism 50 within the mounting cavity, allowing more battery cells 10 to be arranged within the mounting cavity, which is more conducive to improving the energy density of the battery device 100. It can also reduce the risk of interference between the connecting mechanism 50 and the battery pack 91, thereby facilitating the arrangement of the connecting mechanism 50.

[0135] In the above technical solution, by fixing the connecting mechanism 50 to the mounting sidewall 23 located on one side of the mounting cavity, the connecting mechanism 50 is positioned on one side of the mounting cavity. Compared to the connecting mechanism 50 being positioned on the top wall of the housing 20, along the first direction, the connecting mechanism 50 does not occupy the space in the middle of the mounting cavity used for mounting the uppermost battery pack 91. This allows for an increase in the number of battery cells 10 mounted in the uppermost battery pack 91, which is beneficial for improving the energy density of the battery device 100 and also for improving the space utilization rate of the mounting cavity within the battery device 100. Furthermore, by assembling at least a portion of the connecting mechanism 50 within the assembly space 231, the space occupied by the connecting mechanism 50 within the mounting cavity is reduced, allowing for the arrangement of more battery cells 10 within the mounting cavity. This further improves the energy density of the battery device 100 and reduces the risk of interference between the connecting mechanism 50 and the battery pack 91, thus facilitating the arrangement of the connecting mechanism 50.

[0136] According to some embodiments of this application, such as Figure 2 , Figure 3 and Figure 6 As shown, the housing 20 includes a housing body 21, a housing cover 22, and a mounting side plate 30. The housing body 21, housing cover 22, and mounting side plate 30 together define a mounting cavity. Along a first direction, the housing cover 22 and the mounting side plate 30 are located on the same side of the housing body 21. The housing body 21 has a first side wall 211 that is opposite to the mounting side plate 30 along the first direction. The first side wall 211 and the mounting side plate 30 are connected to form a mounting side wall 23. The first side wall 211 defines an assembly space 231. A portion of the connecting mechanism 50 is located on the mounting side plate 30.

[0137] The enclosure 20 includes an enclosure body 21, mounting side panels 30, and an enclosure cover 22. Along the first direction, the enclosure cover 22 and the mounting side panels 30 can be located on the same side of the enclosure body 21. Figure 2 As shown, along the first direction, the lid 22 and the mounting side panel 30 can be located on the upper side of the box body 21. Alternatively, along the first direction, the lid 22 and the mounting side panel 30 can be located on the lower side of the box body 21. Figure 2 As shown, this application uses the example of the box cover 22 and the mounting side plate 30 located on the upper side of the box body 21 for illustration.

[0138] The enclosure body 21 and the cover 22 can be opposite each other along a first direction. The cover 22 is fixed to the enclosure body 21 and can be detachably connected to the enclosure body 21. The cover 22 can be detachably connected to the enclosure body 21 by bolts, or the cover 22 can be snapped onto the enclosure body 21 to make the cover 22 detachably connected to the enclosure body 21. The enclosure body 21 has a first side wall 211 that is opposite to the mounting side plate 30 along the first direction. The lower end of the first side wall 211 contacts the upper end of the mounting side plate 30. The first side wall 211 and the mounting side plate 30 form a mounting side wall 23. The first side wall 211 and the mounting side plate 30 are connected. The first side wall 211 and the mounting side plate 30 can be welded together, or they can be connected by bolts, or they can be snapped together. The first sidewall 211 defines the assembly space 231. That is, the assembly space 231 is defined by the first sidewall 211, the first sidewall 211 forms the assembly space 231, a portion of the connecting mechanism 50 is disposed in the assembly space 231, and a portion of the connecting mechanism 50 is disposed on the mounting side plate 30.

[0139] The mounting side plate 30 can be sandwiched between the first side wall 211 of the housing body 21 and the housing cover 22, so that the housing body 21, the housing cover 22, and the mounting side plate 30 together define a mounting cavity, in which the multilayer battery pack 91 is installed. As an example, the mounting side plate 30 can be sandwiched between the first side wall 211 of the housing body 21 and the second side wall 221 of the housing cover 22, so that the housing body 21, the housing cover 22, and the mounting side plate 30 together define a mounting cavity.

[0140] In the above technical solution, by placing the cover 22 and the mounting side plate 30 on the same side of the housing body 21, it is convenient for the housing body 21, cover 22, and mounting side plate 30 to cooperate and assemble to define the mounting cavity, thereby making the relative positions of the housing body 21, cover 22, and mounting side plate 30 more reasonable. Furthermore, by placing part of the connecting mechanism 50 on the mounting side plate 30, it is more beneficial to reduce the space occupied by the connecting mechanism 50 within the mounting cavity, allowing more battery cells 10 to be arranged within the mounting cavity, which is more conducive to improving the energy density of the battery device 100. It also further reduces the risk of interference between the connecting mechanism 50 and the battery pack 91, thus making the arrangement of the connecting mechanism 50 easier.

[0141] According to some embodiments of this application, each layer of battery pack 91 includes a plurality of battery cells 10, and the plurality of battery cells 10 in each layer of battery pack 91 are arranged along a second direction.

[0142] Each battery pack 91 may include multiple battery cells 10, and the multiple battery cells 10 in each battery pack 91 may be arranged along a second direction. As an example, the multiple battery cells 10 in each battery pack 91 form multiple battery modules, and any two adjacent battery modules in each battery pack 91 may be spaced apart.

[0143] In the above technical solution, by having each layer of battery pack 91 include multiple battery cells 10, and the multiple battery cells 10 of each layer of battery pack 91 are arranged along the second direction, the multi-layer battery pack 91 can be installed in the mounting cavity in an orderly manner, which facilitates the connection of multiple battery cells 10.

[0144] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, part of the connecting mechanism 50 is located on the side of the mounting side plate 30 away from the mounting cavity.

[0145] In this configuration, along the second direction, the side of the mounting side plate 30 facing away from the mounting cavity is the outer side of the mounting side plate 30, and the inner side of the mounting side plate 30 is the side of the mounting side plate 30 facing the mounting cavity. Part of the connecting mechanism 50 is located on the outer side of the mounting side plate 30, and part of the connecting mechanism 50 is located outside the mounting cavity. The part of the connecting mechanism 50 located outside the mounting cavity does not occupy the space inside the mounting cavity, which is beneficial to increasing the space for arranging battery cells 10 inside the mounting cavity. This allows for the installation of more battery cells 10 inside the mounting cavity, which is more conducive to improving the energy density of the battery device 100 and also to improving the space utilization rate of the mounting cavity inside the battery device 100. Therefore, the connecting mechanism 50 is positioned in a reasonable manner.

[0146] In the above technical solution, by setting part of the structure of the connecting mechanism 50 on the side of the mounting side plate 30 away from the mounting cavity, and the part of the structure of the connecting mechanism 50 is located outside the mounting cavity, the space occupied by the connecting mechanism 50 in the mounting cavity is further reduced, which is conducive to increasing the space for arranging battery cells 10 in the mounting cavity, thereby allowing more battery cells 10 to be installed in the mounting cavity, which is more conducive to improving the energy density of the battery device 100, and also more conducive to improving the space utilization rate of the mounting cavity in the battery device 100, thus making the position of the connecting mechanism 50 reasonable.

[0147] According to some embodiments of this application, such as Figure 2-Figure 5As shown, the communication mechanism 50 includes: a plurality of communication joints 51, which are located on the side of the mounting side plate 30 away from the mounting cavity. Part of the plurality of communication joints 51 is configured as a medium inflow joint 52, and another part of the plurality of communication joints 51 is configured as a medium outflow joint 53. Each medium inflow joint 52 is connected to a plurality of heat exchange sections 40 to allow heat exchange medium to flow into the plurality of heat exchange sections 40, and each medium outflow joint 53 is connected to a plurality of heat exchange sections 40 to allow heat exchange medium in the plurality of heat exchange sections 40 to flow out.

[0148] The connecting mechanism 50 includes multiple connecting joints 51, which can be two, three, four, five, or more. Part of each connecting joint 51 is configured as a medium inflow joint 52, and another part is configured as a medium outflow joint 53. Each medium inflow joint 52 is connected to multiple heat exchange sections 40, allowing heat exchange medium to flow into the multiple heat exchange sections 40 through the medium inflow joint 52. Each medium outflow joint 53 is connected to multiple heat exchange sections 40, allowing heat exchange medium within the multiple heat exchange sections 40 to flow out of the heat exchange sections 40 through the medium outflow joint 53. Each heat exchange section 40 is connected to at least one medium inflow joint 52 and at least one medium outflow joint 53 to allow heat exchange medium to flow into and out of the heat exchange section 40. Figure 2 As shown, this application uses two connecting joints 51 as an example for illustration. One connecting joint 51 is constructed as a medium inflow joint 52, and the other connecting joint 51 is constructed as a medium outflow joint 53. In some examples, the medium inflow joint 52 is connected to the heat exchange inlet 44 of the heat exchange section 40, and the medium outflow joint 53 is connected to the heat exchange outlet 45 of the heat exchange section 40. The heat exchange inlet 44 and the heat exchange outlet 45 are connected through a heat exchange flow channel within the heat exchange section 40. Multiple connecting joints 51 are located on the outer side of the mounting side plate 30, away from the mounting cavity.

[0149] The connecting joint 51 can be constructed as a multi-port joint, which can have multiple interfaces that can be interconnected. One interface of the medium inflow joint 52 can be connected to the medium source, which refers to the device that provides the heat exchange medium. The other interfaces of the medium inflow joint 52 are connected to the corresponding heat exchange parts 40. One interface of the medium outflow joint 53 can be connected to the medium source, and the other interfaces of the medium outflow joint 53 are connected to the corresponding heat exchange parts 40, thereby forming a medium circulation path, which allows the heat exchange medium to continuously carry away the heat from the battery device 100.

[0150] In some examples, the connecting joint 51 can also be configured as a multi-way solenoid valve, with multiple ports of the multi-way solenoid valve selectively connected. One port of the multi-way solenoid valve configured as a medium inflow joint 52 can be connected to a medium source, and one port of the multi-way solenoid valve configured as a medium outflow joint 53 can be connected to a medium source. By controlling the multi-way solenoid valve configured as a medium inflow joint 52, the flow of heat exchange medium into the corresponding heat exchange section 40 can be controlled, and by controlling the multi-way solenoid valve configured as a medium outflow joint 53, the flow of heat exchange medium out of the corresponding heat exchange section 40 can be controlled.

[0151] It should be noted that the existing connecting mechanism has a complex structure and is difficult to manufacture, which leads to complex assembly of the battery device and high manufacturing costs.

[0152] In the above technical solution, by setting multiple connecting joints 51, the heat exchange medium flows into and out of the heat exchange section 40, allowing the heat exchange medium to continuously remove heat from the battery device 100. Furthermore, this simplifies the structure of the connecting mechanism 50, facilitates the manufacturing of the battery device 100, reduces the assembly difficulty of the battery device 100, and lowers the manufacturing cost of the battery device 100. Moreover, by placing the multiple connecting joints 51 on the side of the mounting side plate 30 away from the mounting cavity, a portion of the connecting mechanism 50 is located on the side of the mounting side plate 30 away from the mounting cavity.

[0153] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, multiple connecting joints 51 are arranged sequentially along a third direction, and the first direction, the second direction and the third direction all intersect.

[0154] The third direction and the first direction can be one of an acute angle, an obtuse angle, and a right angle. The third direction and the second direction can be one of an acute angle, an obtuse angle, and a right angle. This application uses the example of the first direction, the second direction, and the third direction being perpendicular to each other for illustration.

[0155] like Figure 2 As shown, the third party is Figure 2 In the Y direction, multiple connecting joints 51 are arranged sequentially along the third direction, with the multiple connecting joints 51 being positioned opposite each other along the third direction, and the multiple connecting joints 51 being arranged at intervals along the third direction. If the multiple connecting joints 51 are arranged sequentially along the second direction, it will increase the size of the battery device 100 along the second direction, making it inconvenient to install the battery device 100 on the electrical device. Furthermore, the connecting joints 51 are connected to the corresponding heat exchange parts 40 through connecting pipes. If the multiple connecting joints 51 are arranged sequentially along the first direction, it may cause the multiple connecting pipes to interfere with each other, making the arrangement of the connecting pipes inconvenient.

[0156] In the above technical solution, by arranging multiple connecting joints 51 sequentially along a third direction, the arrangement of multiple connecting joints 51 can be made reasonable, and the space of the battery device 100 along the third direction can be effectively utilized. Compared with arranging multiple connecting joints 51 sequentially along the second direction, the size of the battery device 100 along the second direction can be effectively reduced, making it easier to install the battery device 100 on the power device, making the overall structure of the battery device 100 compact. Compared with arranging multiple connecting joints 51 sequentially along the first direction, the risk of mutual interference between multiple connecting pipes is reduced, the arrangement of connecting pipes is facilitated, the assembly difficulty of the battery device 100 is reduced, and the assembly efficiency of the battery device 100 is improved.

[0157] According to some embodiments of this application, each connecting connector 51 has a first interface 511, the first interface 511 of the medium inflow connector 52 is the medium inlet, the first interface 511 of the medium outflow connector 53 is the medium outlet, and the orientation of the medium inlet and the orientation of the medium outlet are the same.

[0158] Among them, Figure 3 and Figure 13 As shown, each connecting joint 51 has a first interface 511. The first interface 511 of the medium inflow joint 52 is the medium inlet, which can be connected to the medium source outlet of the medium source. The first interface 511 of the medium outflow joint 53 is the medium outlet, which can be connected to the medium source inlet of the medium source. As an example, the medium source can be a water storage device of an electrical appliance, the medium source outlet is the outlet of the water storage device, and the medium source inlet is the inlet of the water storage device. Water in the water storage device flows to the medium inlet through the outlet of the water storage device. The heat exchange medium in the heat exchange section 40 flows into the water storage device through the medium outlet and the inlet of the water storage device. The orientation of the medium inlet and the medium outlet are the same, that is, the medium inlet and the medium outlet are arranged facing the same side of the connecting joint 51. The medium inlet and the medium outlet can both be arranged facing the same side of the connecting joint 51 along a first direction, or the medium inlet and the medium outlet can both be arranged facing the same side of the connecting joint 51 along a second direction.

[0159] It should be noted that both the medium inlet and the medium outlet are connected to the water storage device through pipelines. If the orientation of the medium inlet and the medium outlet are inconsistent, the construction personnel need to repeatedly adjust the pipeline route during pipeline connection work. The pipeline connection is complicated, which can easily lead to pipeline leakage risk due to the complexity of the pipeline connection. In addition, it increases the pipeline connection time and affects the installation efficiency of the battery device 100.

[0160] In the above technical solution, by aligning the orientation of the medium inlet and the medium outlet, construction personnel do not need to repeatedly adjust the pipeline route during pipeline connection operations. This allows for quick and accurate pipeline connection, reducing connection time and improving the assembly efficiency of the battery device 100. It also reduces the risk of pipeline leakage due to complex connections, laying a solid foundation for the efficient and stable operation of the entire thermal management system of the battery device 100.

[0161] According to some embodiments of this application, such as Figure 3 As shown, the medium inlet and medium outlet are arranged along a third direction.

[0162] The medium inlet and medium outlet are arranged along a third direction, and the orientation of the medium inlet and the medium outlet is the same along the third direction. That is, the medium inlet and the medium outlet are arranged on the same side of the battery device 100 along the third direction. In some examples, the central axis of the medium inlet and the central axis of the medium outlet both extend along the third direction, and the central axes of the medium inlet and the central axis of the medium outlet may coincide.

[0163] In the above technical solution, by arranging the medium inlet and medium outlet along a third direction, so that the medium inlet and medium outlet are arranged on the same side of the battery device 100 along a third direction, the construction personnel do not need to repeatedly adjust the pipeline route when performing pipeline connection work, and can complete the pipeline connection more quickly and accurately. This is conducive to further reducing the pipeline connection time, further improving the assembly efficiency of the battery device 100, and further reducing the risk of pipeline leakage caused by the complexity of pipeline connection.

[0164] According to some embodiments of this application, such as Figure 3 and Figure 13 As shown, the battery device 100 also includes a plurality of plugs 60, which are used to seal the corresponding first interface 511.

[0165] The battery device 100 may further include a plurality of plugs 60, each detachably disposed on a plurality of connecting joints 51, and each plug 60 is used to seal the first interface 511 of the corresponding connecting joint 51. In some examples, the connecting joint 51 has one first interface 511, and the number of plugs 60 is the same as the number of connecting joints 51, with the plurality of connecting joints 51 and the plurality of plugs 60 being assembled in a one-to-one correspondence. When the battery device 100 is not installed on a power-consuming device, the plugs 60 are fixed at the first interface 511 of the corresponding connecting joint 51, sealing the corresponding first interface 511, reducing the risk of external substances from the battery device 100 flowing into the connecting joint 51 and the heat exchange section 40 through the first interface 511, which helps to keep the connecting joint 51 and the heat exchange section 40 clean, and also reduces the risk of blockage in the connecting joint 51 and the heat exchange section 40. If it is necessary to install the battery device 100 onto the electrical device, the plug 60 can be removed from the connecting connector 51 to install the battery device 100 onto the electrical device.

[0166] In the above technical solution, by setting multiple plugs 60, when the battery device 100 is not installed to the electrical device, the plugs 60 are fixed at the first interface 511 of the corresponding connecting joint 51. The plugs 60 seal the corresponding first interface 511, reducing the risk of external substances from the battery device 100 flowing into the connecting joint 51 and the heat exchange section 40 through the first interface 511. This helps to keep the connecting joint 51 and the heat exchange section 40 clean and also reduces the risk of blockage in the connecting joint 51 and the heat exchange section 40. When it is necessary to install the battery device 100 to the electrical device, the plugs 60 are removed from the connecting joint 51, and the battery device 100 can be installed to the electrical device.

[0167] According to some embodiments of this application, such as Figure 3 , Figure 6 and Figure 7 As shown, the mounting side panel 30 includes: a first plate 31 and a second plate 32. Along a first direction, the first plate 31 is located on the side of the second plate 32 away from the housing body 21. The first plate 31 and the second plate 32 are bent and connected to form a mounting space 33 on the side of the first plate 31 away from the mounting cavity. At least a portion of each connecting joint 51 is located within the mounting space 33.

[0168] The mounting side plate 30 includes a first plate 31 and a second plate 32, which are fixedly connected. The first plate 31 and the second plate 32 can be integrally formed, welded together, or fixedly connected by bolts. This application uses the integral forming of the first plate 31 and the second plate 32 as an example for illustration. The integral forming of the first plate 31 and the second plate 32 is beneficial to improving the structural strength of the mounting side plate 30, reducing the risk of breakage at the connection between the first plate 31 and the second plate 32, and also reducing the number of molds required to produce the mounting side plate 30, which is beneficial to reducing the manufacturing cost of the mounting side plate 30, thereby reducing the manufacturing cost of the battery device 100.

[0169] Along the first direction, the first plate 31 is located on the side of the second plate 32 away from the box body 21. This can also be understood as the first plate 31 being located between the second plate 32 and the box cover 22, and the second plate 32 being located on the side of the first plate 31 away from the box cover 22. The first plate 31 and the second plate 32 are bent and connected, allowing the mounting side plate 30 to be constructed as an "L"-shaped structure or a similar "L"-shaped structure. Along the second direction, the distance between the inner ends of the first plate 31 and the second plate 32 is less than the distance between the outer ends of the first plate 31 and the second plate 32. Furthermore, the inner ends of the first plate 31 and the second plate 32 are adjacent to each other, thereby forming a mounting space 33 on the side of the first plate 31 away from the mounting cavity. At least a portion of each connecting joint 51 is located within the mounting space 33; that is, a portion of the structure of each connecting joint 51 is located within the mounting space 33, or the entire structure of each connecting joint 51 is located within the mounting space 33.

[0170] It should be noted that, along the second direction, the inner end of the second plate 32 refers to the end of the second plate 32 facing the mounting cavity, and the outer end of the second plate 32 refers to the end of the second plate 32 away from the mounting cavity.

[0171] In the above technical solution, by bending and connecting the first plate 31 and the second plate 32 to form an installation space 33 on the side of the first plate 31 away from the installation cavity, the installation side plate 30 can be recessed into the installation cavity, and at least a portion of each connecting joint 51 is located in the installation space 33. This is beneficial to further reduce the size of the battery device 100 along the second direction, and can make the structure of the battery device 100 more compact, thereby helping to reduce the volume of the battery device 100.

[0172] According to some embodiments of this application, such as Figure 6 and Figure 13 As shown, each connecting joint 51 has a second interface 512, which is connected to the first interface 511 of the corresponding connecting joint 51. The second interface 512 is used to connect to the corresponding heat exchange section 40.

[0173] Each connecting joint 51 has a second interface 512. The first interface 511 and the second interface 512 of the connecting joint 51 are connected. The second interface 512 is used to connect with the corresponding heat exchange section 40. Specifically, the second interface 512 of the medium inflow joint 52 can be connected with the heat exchange section inlet 44 of the corresponding heat exchange section 40, and the second interface 512 of the medium outflow joint 53 can be connected with the heat exchange section outlet 45 of the corresponding heat exchange section 40. The second interface 512 of the medium inflow joint 52 can be connected with the heat exchange section inlet 44 of the heat exchange section 40 through a connecting pipe, and the second interface 512 of the medium outflow joint 53 can be connected with the heat exchange section outlet 45 of the heat exchange section 40 through a connecting pipe.

[0174] In some embodiments, each connecting connector 51 has a second interface 512, the second interface 512 of the medium inflow connector 52 is simultaneously connected to the heat exchange inlet 44 of the plurality of heat exchange sections 40, and the second interface 512 of the medium outflow connector 53 is simultaneously connected to the heat exchange outlet 45 of the plurality of heat exchange sections 40.

[0175] In some embodiments, each connecting connector 51 has a plurality of second interfaces 512, the plurality of second interfaces 512 of the medium inflow connector 52 are respectively connected to a plurality of heat exchange sections 40, each heat exchange section 40 is connected to at least one second interface 512 of the medium inflow connector 52, the plurality of second interfaces 512 of the medium outflow connector 53 are respectively connected to a plurality of heat exchange sections 40, each heat exchange section 40 is connected to at least one second interface 512 of the medium outflow connector 53.

[0176] In the above technical solution, the connecting joint 51 is provided with a second interface 512, which enables the connecting joint 51 to communicate with the corresponding heat exchange section 40. The first interface 511 and the second interface 512 of the medium inflow joint 52 are connected, which enables the heat exchange medium to flow into the corresponding heat exchange section 40 along the first interface 511 and the second interface 512. The first interface 511 and the second interface 512 of the medium outflow joint 53 are connected, which enables the heat exchange medium in the heat exchange section 40 to flow out through the second interface 512 and the first interface 511.

[0177] According to some embodiments of this application, such as Figure 6 and Figure 13 As shown, each connecting joint 51 has multiple second interfaces 512, and the multiple second interfaces 512 are connected to multiple heat exchange sections 40 in a one-to-one correspondence.

[0178] Each connecting joint 51 has multiple second interfaces 512. Each connecting joint 51 can have two, three, four, five, or other numbers of second interfaces 512. The number of second interfaces 512 in each connecting joint 51 is the same as the number of heat exchange units 40. The multiple second interfaces 512 of each connecting joint 51 are connected to multiple heat exchange units 40 in a one-to-one correspondence. The first interface 511 of each connecting joint 51 is connected to all of the multiple second interfaces 512.

[0179] In some examples, each connecting joint 51 has two second interfaces 512, and there are two heat exchange sections 40. One second interface 512 of each connecting joint 51 is connected to one heat exchange section 40, and the other second interface 512 of each connecting joint 51 is connected to another heat exchange section 40. In other examples, each connecting joint 51 has three second interfaces 512, and there are three heat exchange sections 40. The three second interfaces 512 of each connecting joint 51 are connected to three heat exchange sections 40 respectively. This application will describe an example where each connecting joint 51 has two second interfaces 512 and there are two heat exchange sections 40.

[0180] In the above technical solution, the multiple second interfaces 512 of each connecting joint 51 are respectively connected to multiple heat exchange sections 40 one by one. This is beneficial to make the heat exchange medium flow into the multiple heat exchange sections 40 evenly through the medium inflow joint 52, which is beneficial to improve the heat exchange consistency of the heat exchange sections 40, reduce the temperature difference of the multilayer battery pack 91, improve the reliability of the battery device 100, and also facilitate the synchronous flow of the heat exchange medium in the multiple heat exchange sections 40 into the medium outflow joint 53.

[0181] According to some embodiments of this application, such as Figure 6 and Figure 11 As shown, the mounting side plate 30 has multiple clearance structures, and the multiple clearance structures and multiple connecting joints 51 correspond one-to-one. Each clearance structure includes a clearance hole 71 that communicates with the mounting cavity, and the multiple second interfaces 512 of the connecting joint 51 correspond to the clearance holes 71 of the corresponding clearance structures.

[0182] The mounting side plate 30 has multiple clearance structures, each corresponding to a plurality of connecting joints 51, meaning one connecting joint 51 corresponds to one clearance structure. Each clearance structure includes a clearance hole 71 that penetrates the mounting side plate 30 along its thickness direction and communicates with the mounting cavity. Multiple second interfaces 512 of the connecting joint 51 correspond to the clearance holes 71 of the corresponding clearance structures, allowing the mounting side plate 30 to avoid the multiple second interfaces 512 of the connecting joint 51. As an example, each clearance structure includes one clearance hole 71, and each clearance hole 71 of each clearance structure corresponds simultaneously to multiple second interfaces 512 of the corresponding connecting joint 51. As another example, each clearance structure includes multiple clearance holes 71, and each of the multiple clearance holes 71 of each clearance structure corresponds to multiple second interfaces 512 of the corresponding connecting joint 51, with each clearance hole 71 corresponding to at least one second interface 512 of the corresponding connecting joint 51.

[0183] In the above technical solution, multiple clearance structures are formed by mounting side plate 30. Each clearance structure includes a clearance hole 71 that communicates with the mounting cavity. Multiple second interfaces 512 of the connecting joint 51 correspond to the clearance holes 71 of the corresponding clearance structures, which facilitates the connecting pipe to connect the second interface 512 of the corresponding connecting joint 51 and the corresponding heat exchange part 40, reduces the assembly difficulty of the connecting pipe, thereby reducing the assembly difficulty of the battery device 100, and thus helps to improve the assembly efficiency of the battery device 100 and increase the production efficiency of the battery device 100.

[0184] According to some embodiments of this application, such as Figure 6 and Figure 11 As shown, each clearance structure includes multiple clearance holes 71, and the multiple second interfaces 512 of the connecting connector 51 correspond one-to-one with the multiple clearance holes 71 of the corresponding clearance structure.

[0185] Each clearance structure may include multiple clearance holes 71. Each clearance structure may include two, three, four, five, or other numbers of clearance holes 71. The number of clearance holes 71 in each clearance structure is the same as the number of multiple second interfaces 512 of the corresponding connecting connector 51. The multiple clearance holes 71 of each clearance structure are set in a one-to-one correspondence with the multiple second interfaces 512 of the corresponding connecting connector 51.

[0186] In the above technical solution, by setting multiple second interfaces 512 of the connecting joint 51 in a one-to-one correspondence with multiple clearance holes 71 of the corresponding clearance structure, the risk of interference between the connecting joint 51 and the multiple connecting pipes of the multiple heat exchange parts 40 is reduced. This makes it easier for the connecting pipes to connect the second interfaces 512 of the corresponding connecting joint 51 and the corresponding heat exchange parts 40, further reducing the assembly difficulty of the connecting pipes, thereby further reducing the assembly difficulty of the battery device 100, which in turn is more conducive to improving the assembly efficiency of the battery device 100 and further improving the production efficiency of the battery device 100.

[0187] According to some embodiments of this application, such as Figure 6 and Figure 11 As shown, each clearance structure includes two clearance holes 71, namely a first clearance hole 711 and a second clearance hole 712. The first plate 31 has a first clearance hole 711, and the second plate 32 has a second clearance hole 712. Each connecting connector 51 has two second interfaces 512. One second interface 512 is formed on the side of the connecting connector 51 facing the first plate 31 and the side facing the second plate 32, and the two second interfaces 512 correspond to the corresponding first clearance hole 711 and second clearance hole 712, respectively.

[0188] Each clearance structure may include two clearance holes 71, namely a first clearance hole 711 and a second clearance hole 712. The first plate 31 is formed with the first clearance hole 711, which penetrates the first plate 31 and communicates with the mounting cavity. The second plate 32 is formed with the second clearance hole 712, which penetrates the second plate 32 and communicates with the mounting cavity.

[0189] Each connecting connector 51 has two second interfaces 512. Along the second direction, the connecting connector 51 is located on the side of the first plate 31 away from the mounting cavity, and a second interface 512 is formed on the side of the connecting connector 51 facing the first plate 31. Along the first direction, the connecting connector 51 is located on the side of the second plate 32 away from the housing body 21. In other words, the connecting connector 51 is located above the second plate 32, and another second interface 512 is formed on the side of the connecting connector 51 facing the second plate 32. The two second interfaces 512 of each connecting connector 51 correspond to the corresponding first clearance hole 711 and second clearance hole 712, respectively. That is, one second interface 512 of each connecting connector 51 is correspondingly set to the first clearance hole 711, and the other second interface 512 of each connecting connector 51 is correspondingly set to the second clearance hole 712.

[0190] In the above technical solution, a first clearance hole 711 is formed on the first plate 31, and a second clearance hole 712 is formed on the second plate 32. A second interface 512 is formed on the side of the connecting joint 51 facing the first plate 31 and the side facing the second plate 32, respectively. This allows multiple second interfaces 512 of the connecting joint 51 to be arranged on different sides of the connecting joint 51, so that the two second interfaces 512 of each connecting joint 51 correspond to the corresponding first clearance hole 711 and second clearance hole 712, respectively. This makes the arrangement of the second interfaces 512 and clearance holes 71 of the connecting joint 51 reasonable, and facilitates the connection of the connecting pipe to the second interface 512 of the corresponding connecting joint 51 and the corresponding heat exchange part 40.

[0191] According to some embodiments of this application, such as Figure 8 , Figure 11 and Figure 13 As shown, each connecting joint 51 has a first connecting post 513 formed on the side facing the second plate 32, the first connecting post 513 has a second interface 512, and the first connecting post 513 passes through the second clearance hole 712.

[0192] In this section, along the first direction, a partial structure with a mounting cavity is formed below the second plate 32. Each connecting joint 51 has a first connecting post 513 on the side facing the second plate 32. The first connecting post 513 has a second interface 512. Specifically, the first connecting post 513 is an annular structure to define the second interface 512. When the connecting joint 51 is installed on the mounting side plate 30, the first connecting post 513 of the connecting joint 51 can pass through the second clearance hole 712 of the corresponding clearance structure from top to bottom.

[0193] In the above technical solution, the first connecting post 513 of the connecting joint 51 passes through the corresponding second clearance hole 712. The first connecting post 513 can extend into the installation cavity, which facilitates the connection of the connecting pipe to the first connecting post 513 and the corresponding heat exchange part 40, further improving the connection efficiency of the connecting pipe. In addition, the first connecting post 513 can abut against the inner side wall of the second clearance hole 712 for limiting, so that the connecting joint 51 can be reliably fixed to the installation side plate 30.

[0194] According to some embodiments of this application, such as Figure 6 and Figure 10 As shown, the connecting mechanism 50 may further include: a plurality of connecting structures 80, at least a portion of which are disposed within the assembly space 231, the plurality of connecting structures 80 and the plurality of connecting joints 51 corresponding one-to-one, and the connecting structure 80 connecting the corresponding connecting joint 51 and the plurality of heat exchange parts 40.

[0195] Among them, Figure 6 and Figure 10As shown, the connecting mechanism 50 may further include: a plurality of connecting structures 80, at least a portion of which is disposed within the assembly space 231. It should be noted that at least a portion of at least one connecting structure 80 may be disposed within the assembly space 231. As an example, at least a portion of each connecting structure 80 may be disposed within the assembly space 231. As another example, at least a portion of one connecting structure 80 may be disposed within the assembly space 231. As yet another example, at least a portion of two connecting structures 80 may be disposed within the assembly space 231. The number of connecting structures 80 may be two, three, four, five, etc., and the number of connecting structures 80 may be the same as the number of connecting joints 51. The plurality of connecting structures 80 and the plurality of connecting joints 51 are connected in a one-to-one correspondence. This application uses the example of two connecting structures 80 and two connecting joints 51 for illustration. Each connecting structure 80 connects to the corresponding connecting joint 51 and a plurality of heat exchange parts 40. The connecting structure 80 may include a connecting pipe, which connects to the second interface 512 of the corresponding connecting joint 51 and the corresponding heat exchange part 40. As an example, each connecting structure 80 may include multiple connecting pipes, and the multiple connecting pipes of each connecting structure 80 are respectively connected to multiple second interfaces 512 of a corresponding connecting connector 51 and a corresponding heat exchange section 40, with the multiple connecting pipes, the multiple second interfaces 512 of the corresponding connecting connector 51, and the multiple heat exchange sections 40 connected in a one-to-one correspondence. As another example, each connecting structure 80 may include multiple connecting pipes, and at least one connecting pipe of each connecting structure 80 is connected to a second interface 512 of a corresponding connecting connector 51 and multiple heat exchange sections 40.

[0196] In the above technical solution, by setting multiple connecting structures 80, the connecting structures 80 can connect the corresponding connecting joints 51 and the multiple heat exchange parts 40, achieving the effect of connecting the corresponding connecting joints 51 and the multiple heat exchange parts 40. Furthermore, the multiple connecting structures 80 can be produced using the same mold, which helps reduce the manufacturing cost of the battery device 100. Additionally, at least a portion of the multiple connecting structures 80 is located within the assembly space 231, reducing the space occupied by the multiple connecting structures 80 within the mounting cavity.

[0197] According to some embodiments of this application, a plurality of heat exchange sections 40 include: a first heat exchange section 41 and a second heat exchange section 42. Along a first direction, the first heat exchange section 41 is located between the cover 22 and the second heat exchange section 42. A second interface 512 is formed on the side of the connecting joint 51 facing the first plate 31 and the side facing the second plate 32, respectively. The connecting structure 80 includes a first connecting pipe 81 and a second connecting pipe 82. The first connecting pipe 81 connects the first heat exchange section 41 and the second interface 512 of the corresponding connecting joint 51 facing the first plate 31. The second connecting pipe 82 connects the second heat exchange section 42 and the second interface 512 of the corresponding connecting joint 51 facing the second plate 32. The second connecting pipe 82 is disposed in the assembly space 231.

[0198] Among them, Figure 3 , Figure 6 and Figure 13 As shown, there are two heat exchange sections 40, including a first heat exchange section 41 and a second heat exchange section 42. Along the first direction, the first heat exchange section 41 is located between the cover 22 and the second heat exchange section 42, and the second heat exchange section 42 is located on the side of the first heat exchange section 41 facing away from the cover 22. Alternatively, the second heat exchange section 42 can be understood as being located below the first heat exchange section 41. The first heat exchange section 41 and the second heat exchange section 42 are spaced apart along the first direction, and at least one layer of battery pack 91 can be formed between them. Along the second direction, a second interface 512 is formed on the side of the connecting connector 51 facing the first plate 31, and another second interface 512 is formed on the side of the connecting connector 51 facing the second plate 32. Second interfaces 512 are formed on both sides of the connecting connector 51.

[0199] The connecting structure 80 includes a first connecting pipe 81 and a second connecting pipe 82. The first connecting pipe 81 is located above the second connecting pipe 82. One end of the first connecting pipe 81 is connected to the second interface 512 of the connecting joint 51 facing the first plate 31, and the other end of the first connecting pipe 81 is connected to the first heat exchange section 41, thereby connecting the first connecting pipe 81 to the first heat exchange section 41 and the second interface 512 of the corresponding connecting joint 51 facing the first plate 31. One end of the second connecting pipe 82 is connected to the second interface 512 of the corresponding connecting joint 51 facing the second plate 32, and the other end of the second connecting pipe 82 is connected to the second heat exchange section 42, thereby connecting the second connecting pipe 82 to the second heat exchange section 42 and the second interface 512 of the corresponding connecting joint 51 facing the second plate 32. The second connecting pipe 82 is disposed within the assembly space 231. It should be noted that either a portion of the structure of the second connecting pipe 82 is disposed within the assembly space 231, or the entire structure of the second connecting pipe 82 is disposed within the assembly space 231.

[0200] In the above technical solution, by setting up a first heat exchange section 41, a second heat exchange section 42, a first connecting pipe 81, and a second connecting pipe 82, and by forming a second interface 512 on the side of the connecting joint 51 facing the first plate 31 and the side facing the second plate 32 respectively, the risk of interference between the first connecting pipe 81 and the second connecting pipe 82 can be reduced, and the space inside the mounting cavity can be fully utilized, making the overall structure of the battery device 100 more compact and reasonable. Furthermore, the second connecting pipe 82 is located within the assembly space 231, reducing the space occupied by the second connecting pipe 82 inside the mounting cavity.

[0201] According to some embodiments of this application, such as Figure 6 and Figure 12 As shown, the first sidewall 211 includes a sidewall body 2111, the sidewall body 2111 and the mounting side plate 30 are arranged and connected along the first direction, the assembly space 231 is located between the mounting cavity and the sidewall body 2111 along the second direction, the second connecting pipe 82 extends along the first direction, the inner surface of the sidewall body 2111 is formed with a relief groove 212, and at least a portion of the second connecting pipe 82 is located in the relief groove 212.

[0202] The housing body 21 has a first sidewall 211. Along the second direction, the first sidewall 211 and the mounting side plate 30 are located on the same side of the mounting cavity. The first sidewall 211 and the mounting side plate 30 are arranged opposite each other along the first direction. It should be noted that the first sidewall 211 and the mounting side plate 30 can be partially arranged opposite each other along the first direction, or the first sidewall 211 and the mounting side plate 30 can be arranged opposite each other along the entire structure of the first direction. The first sidewall 211 is located below the second plate 32. The first sidewall 211 includes a sidewall body 2111. The sidewall body 2111 and the second plate 32 are arranged and connected along the first direction. Along the second direction, the second clearance hole 712 on the second plate 32 is located inside the sidewall body 2111. The inside of the sidewall body 2111 refers to the side of the sidewall body 2111 facing the mounting cavity. The second clearance hole 712 on the second plate 32 and the sidewall body 2111 are staggered along the first direction. Along the first direction, the second connecting pipe 82 can be disposed below the second plate 32. The second connecting pipe 82 extends within the mounting cavity along the first direction. The second connecting pipe 82 can extend obliquely along the first direction, or the second connecting pipe 82 can extend linearly along the first direction. This application uses the example of the second connecting pipe 82 extending obliquely towards the side wall body 2111 from bottom to top as an example for illustration.

[0203] The inner surface of the sidewall body 2111 is formed with a clearance groove 212. There can be multiple clearance grooves 212, and each clearance groove 212 and at least one connecting structure 80 are correspondingly arranged along the second direction. This application describes the example of multiple clearance grooves 212 and multiple connecting structures 80 being arranged in a one-to-one correspondence. At least a portion of the second connecting pipe 82 is located within the clearance groove 212. It can also be understood that a portion of the structure of the second connecting pipe 82 is assembled within the corresponding clearance groove 212, or that the entire structure of the second connecting pipe 82 is assembled within the corresponding clearance groove 212.

[0204] In the above technical solution, by forming a relief groove 212 in the side wall body 2111, at least a part of the structure of the second connecting pipe 82 of the connecting structure 80 can be assembled in the corresponding relief groove 212, reducing the space occupied by the second connecting pipe 82 in the assembly space 231, allowing more space in the mounting cavity to install the battery cell 10, which is beneficial to further improve the energy density of the battery device 100, and also beneficial to further improve the space utilization rate of the mounting cavity in the battery device 100, and can also make the overall structure of the battery device 100 more compact.

[0205] According to some embodiments of this application, the first sidewall 211 further includes a mounting boss 213. The mounting boss 213 is formed on the inner surface of the sidewall body 2111 near the mounting cavity, so that the sidewall body 2111 and the mounting boss 213 together define the assembly space 231. The mounting boss 213 is formed with a mounting hole 214, which penetrates the mounting boss 213 along a first direction. Along the first direction, the mounting boss 213 and the second plate 32 are opposite each other. The assembly space 231 is located between the mounting boss 213 and the second plate 32. The second heat exchange part 42 is located on the side of the mounting boss 213 away from the cover 22. The second heat exchange part 42 has a second connecting post 43 protruding towards the mounting boss 213. The second connecting post 43 passes through the mounting hole 214. The second connecting pipe 82 and the second connecting post 43 are connected to communicate with the second connecting pipe 82 and the second heat exchange part 42.

[0206] Among them, Figure 6 and Figure 12As shown, a mounting boss 213 is provided on the inner surface of the sidewall body 2111 near the mounting cavity. The mounting boss 213 and the sidewall body 2111 can be integrally formed. Along the second direction, the mounting boss 213 protrudes into the inner surface of the sidewall body 2111. The mounting boss 213 and the second plate 32 are arranged opposite to each other and spaced apart along the first direction. Along the first direction, the second connecting pipe 82 can be disposed between the mounting boss 213 and the second plate 32. The mounting boss 213 has a mounting hole 214, which penetrates the mounting boss 213 along the first direction. The second heat exchange part 42 is located on the side of the mounting boss 213 away from the cover 22. In other words, the second heat exchange part 42 is disposed below the mounting boss 213. Along the first direction, the second heat exchange part 42 can abut against the surface of the mounting boss 213 away from the cover 22. It can also be understood that the second heat exchange part 42 abuts against the lower surface of the mounting boss 213. The mounting boss 213 can limit the second heat exchange part 42 and reduce the risk of the second heat exchange part 42 moving towards the first heat exchange part 41.

[0207] The second heat exchange section 42 has a second connecting post 43 protruding towards the mounting boss 213. The second connecting post 43 extends along a first direction and passes through the mounting hole 214. The second connecting pipe 82 and the second connecting post 43 are connected to communicate with the second heat exchange section 42. The second heat exchange section 42 may have multiple second connecting posts 43, which are annular. Some of the second connecting posts 43 define a heat exchange section inlet 44, and other parts of the second connecting posts 43 define a heat exchange section outlet 45. The mounting boss 213 may have multiple mounting holes 214, which correspond one-to-one with multiple second connecting posts 43. Each mounting hole 214 contains one second connecting post 43.

[0208] As an example, the second heat exchange section 42 has two second connecting posts 43, one defining a heat exchange section inlet 44 and the other defining a heat exchange section outlet 45. A second connecting pipe 82 connected to the medium inlet connector 52 is connected to the second connecting post 43 defining the heat exchange section inlet 44, and a second connecting pipe 82 connected to the medium outlet connector 53 is connected to the second connecting post 43 defining the heat exchange section outlet 45.

[0209] In the above technical solution, the mounting boss 213 is provided on the inner surface of the side wall body 2111, so that the first side wall 211 defines the assembly space 231. The mounting boss 213 can limit the second heat exchange part 42, reducing the risk of the second heat exchange part 42 moving towards the first heat exchange part 41. In addition, the second connecting post 43 passes through the mounting hole 214, which facilitates the connection between the second connecting pipe 82 and the corresponding heat exchange part 40, further improving the connection efficiency of the second connecting pipe 82. Furthermore, the second connecting post 43 can abut against the inner side wall of the mounting hole 214 to limit the second heat exchange part 42, which can reliably fix the second heat exchange part 42 in the mounting cavity.

[0210] According to some embodiments of this application, such as Figure 6 and Figure 13 As shown, the connecting joint 51 has a mounting portion 514, the mounting portion 514 has a first mounting hole 515, the first connecting pipe 81 has a mounting flange 811, the mounting flange 811 has a second mounting hole, and fasteners are inserted through the second mounting hole and assembled into the first mounting hole 515 to fix the first connecting pipe 81 to the mounting portion 514.

[0211] Along the second direction, a mounting portion 514 is formed on the side of the connecting joint 51 facing the first plate 31. As an example, the mounting portion 514 can be a threaded sleeve with a first mounting hole 515. The first mounting hole 515 is a threaded hole. The end of the first connecting pipe 81 connected to the connecting joint 51 can be formed with a mounting flange 811. The mounting flange 811 and the mounting portion 514 are arranged opposite to each other. The mounting flange 811 has a second mounting hole, which corresponds to the first mounting hole 515. The fastener can be a bolt, which can pass through the second mounting hole of the mounting flange 811 and be assembled in the first mounting hole 515 to fix the fastener to the threaded sleeve, thereby fixing the first connecting pipe 81 to the mounting portion 514, and thus reliably connecting the first connecting pipe 81 to the corresponding second interface 512.

[0212] As another example, the mounting part 514 can be a first snap-fit ​​structure, and the end of the first connecting pipe 81 connected to the connecting connector 51 can be formed with a second snap-fit ​​structure. The first snap-fit ​​structure is one of a slot and a snap-fit ​​boss, and the second snap-fit ​​structure is the other of a slot and a snap-fit ​​boss. The snap-fit ​​boss snaps into the slot, thereby fixing the first connecting pipe 81 to the mounting part 514, and thus making the first connecting pipe 81 reliably connected to the corresponding second interface 512.

[0213] In the above technical solution, an installation part 514 is formed on the side of the connecting joint 51 facing the first plate 31, which can reliably fix the first connecting pipe 81 to the connecting joint 51, thereby making the first connecting pipe 81 reliably connected to the corresponding second interface 512.

[0214] According to some embodiments of this application, such as Figure 6 and Figure 13 As shown, there are multiple mounting parts 514, which are arranged around the second interface 512 on the corresponding side of the connecting joint 51.

[0215] The connecting joint 51 has multiple mounting portions 514 on the side facing the first plate 31. The number of mounting portions 514 can be two, three, four, or other similar. A second interface 512 is formed on the side of the connecting joint 51 facing the first plate 31. The multiple mounting portions 514 are arranged circumferentially around the second interface 512, and can be evenly distributed along the circumference of the second interface 512. As an example, the connecting joint 51 has two mounting portions 514 on the side facing the first plate 31, with the two mounting portions 514 located on opposite sides of the second interface 512.

[0216] In the above technical solution, by setting multiple mounting parts 514 and arranging the multiple mounting parts 514 around the second interface 512 on the corresponding side of the connecting joint 51, the first connecting pipe 81 can be more reliably fixed to the connecting joint 51, thereby making the first connecting pipe 81 more reliably connected to the corresponding second interface 512.

[0217] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, the mounting side plate 30 is sandwiched between the box cover 22 and the box body 21, and the mounting side plate 30 is fixed to at least one of the box body 21 and the box cover 22.

[0218] In this configuration, along the first direction, a mounting side plate 30 is sandwiched between the lid 22 and the body 21. The mounting side plate 30 can be fixed to either the body 21 or the lid 22, or it can be fixed to both. The mounting side plate 30 can be detachably fixed to at least one of the body 21 and the lid 22. As an example, the mounting side plate 30 can be detachably fixed to at least one of the body 21 and the lid 22 using bolts. As another example, the mounting side plate 30 can be detachably fixed to at least one of the body 21 and the lid 22 using a snap-fit ​​structure.

[0219] In the above technical solution, by mounting the side plate 30 between the cover 22 and the body 21, the side plate 30, the cover 22, and the body 21 can jointly define the mounting cavity. By fixing the side plate 30 to at least one of the body 21 and the cover 22, the side plate 30, the cover 22, and the body 21 can be assembled into a whole, which helps to improve the structural strength of the battery device 100.

[0220] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, the box cover 22 has a second side wall 221, the first side wall 211, the mounting side plate 30 and the second side wall 221 are arranged along the first direction, and the mounting side plate 30 is sandwiched between the first side wall 211 and the second side wall 221.

[0221] The box body 21 has a first side wall 211, and the box cover 22 has a second side wall 221. The first side wall 211 and the second side wall 221 are both side walls of the mounting cavity. Along the first direction, the mounting side plate 30 is disposed between the first side wall 211 and the second side wall 221. The mounting side plate 30 is sandwiched between the first side wall 211 and the second side wall 221. The mounting side plate 30 can be fixed to the first side wall 211, or the mounting side plate 30 can be fixed to the second side wall 221, or the mounting side plate 30 can be fixed to the first side wall 211 and the second side wall 221.

[0222] In the above technical solution, by installing the side plate 30 between the first side wall 211 and the second side wall 221, the side plate 30 can be arranged on one side of the mounting cavity along the second direction, so that the side plate 30 is reasonably positioned.

[0223] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, the second sidewall 221 has a first assembly notch 222, at least a portion of the mounting side plate 30 is adapted to the shape of the first assembly notch 222, and the mounting side plate 30 is assembled to the first assembly notch 222.

[0224] The second sidewall 221 has a first assembly notch 222, which communicates with the mounting cavity. The first assembly notch 222 extends through the second sidewall 221 along a second direction, and in the first direction, the end of the first assembly notch 222 near the first sidewall 211 can extend towards the end of the second sidewall 221. The lid 22 and the body 21 are fitted together along the first direction, with the first assembly notch 222 open. At least a portion of the mounting side plate 30 is fitted into the first assembly notch 222, and the mounting side plate 30 can cover the first assembly notch 222, thereby allowing the mounting side plate 30, lid 22, and body 21 to jointly define the mounting cavity. When a portion of the structure of the mounting side plate 30 is fitted into the first assembly notch 222, the shape of that portion of the structure matches the shape of the first assembly notch 222. When the entire structure of the mounting side plate 30 is fitted into the first assembly notch 222, the shape of the entire mounting side plate 30 matches the shape of the first assembly notch 222. Shape adaptation means that the shape of the mounting side plate 30 is the same as or approximately the same as the shape of the first assembly notch 222.

[0225] In the above technical solution, the first assembly notch 222 is formed by the second side wall 221, which enables the mounting side plate 30 to be assembled into the first assembly notch 222, reducing the risk of interference between the cover 22 and the mounting side plate 30. Furthermore, by adapting the shape of at least a portion of the mounting side plate 30 to the first assembly notch 222, the second side wall 221 and the mounting side plate 30 can be adapted to each other, making it easier for the mounting side plate 30 to cover the first assembly notch 222, and for the mounting side plate 30, the cover 22 and the box body 21 to jointly define the mounting cavity.

[0226] According to some embodiments of this application, such as Figure 3 and Figure 11 As shown, the second sidewall 221 has a mounting flange 223, which is provided along the edge of the first assembly notch 222. The end face of the mounting side plate 30 facing the second sidewall 221 has a mounting structure 34, which is opposite to the mounting flange 223 and is fixed to the mounting flange 223.

[0227] The second sidewall 221 has a mounting flange 223, which extends along the edge of the first assembly notch 222. Mounting flanges 223 are formed at the edges of the first assembly notch 222. Along the second direction, the outer surface of the second sidewall 221 facing away from the mounting cavity also has mounting flanges 223. The end face of the mounting sideplate 30 facing the second sidewall 221 has a mounting structure 34. Specifically, the end face of the first plate 31 facing the second sidewall 221 has a mounting structure 34. The mounting structure 34 can be a plate-like structure. The mounting structure 34 and the mounting flange 223 are opposite each other along the first direction. The mounting structure 34 is fixed to the mounting flange 223, thereby fixing the mounting sideplate 30 to the cover 22.

[0228] As an example, the mounting flange 223 has a first mounting hole 224, and the mounting structure 34 has a second mounting hole 35. There are multiple first mounting holes 224 and multiple second mounting holes 35. The multiple first mounting holes 224 and multiple second mounting holes 35 correspond one-to-one. The mounting structure 34 is fixed to the mounting flange 223 by passing bolts through the corresponding first mounting holes 224 and second mounting holes 35.

[0229] In the above technical solution, the second side wall 221 has a mounting flange 223, and the end face of the mounting side plate 30 facing the second side wall 221 has a mounting structure 34, which facilitates the assembly of the mounting flange 223 and the mounting structure 34, thereby facilitating the fixed assembly of the second side wall 221 and the mounting side plate 30, and making the mounting flange 223 and the mounting structure 34 reasonably positioned.

[0230] According to some embodiments of this application, such as Figure 2 and Figure 3 As shown, the shapes of the mounting flange 223 and the mounting structure 34 are adapted.

[0231] The shape of the mounting flange 223 is the same as the shape of the mounting structure 34. Alternatively, the shape of the mounting flange 223 is approximately the same as the shape of the mounting structure 34.

[0232] In the above technical solution, by matching the shapes of the mounting flange 223 and the mounting structure 34, it is beneficial to reliably assemble the mounting flange 223 and the mounting structure 34, and to facilitate the sealing of the gap between the mounting flange 223 and the mounting structure 34.

[0233] According to some embodiments of this application, such as Figure 3 As shown, the housing body 21 also has two third sidewalls 215, which are spaced apart along a third direction. A first sidewall 211 is located between the two third sidewalls 215. Along the first direction, the third sidewall 215 has a protrusion 216 that protrudes from the first sidewall 211 toward the housing cover 22. A second mounting notch 217 is formed at the inner corner of the protrusion 216. The mounting side plate 30 is located between the two third sidewalls 215, and the mounting side plate 30 is mounted on the second mounting notch 217 so that the third sidewall 215 restricts the mounting side plate 30 from moving toward the mounting cavity along the second direction.

[0234] The housing body 21 also has two third side walls 215, which are arranged opposite to each other and spaced apart along a third direction. The first side wall 211 is located between the two third side walls 215, and along the second direction, one end of the first side wall 211 is adjacent to one end of the third side wall 215.

[0235] Furthermore, along the first direction, the third sidewall 215 has a protrusion 216 that protrudes from the first sidewall 211 toward the lid 22. The protrusion 216 protrudes from the surface of the first sidewall 211 facing the lid 22 along the first direction. Along the third direction, a second assembly notch 217 is formed at the inner corner of the protrusion 216. A portion of the structure of the mounting side plate 30 is located between the two third sidewalls 215, and the mounting side plate 30 is assembled at the second assembly notch 217 of the two third sidewalls 215. After the mounting side plate 30 is assembled at the second assembly notch 217 of the two third sidewalls 215, along the second direction, a portion of the structure of the third sidewall 215 is located inside the mounting side plate 30 and can abut against the mounting side plate 30. This allows the third sidewall 215 to restrict the mounting side plate 30 from moving toward the mounting cavity along the second direction, thereby making the mounting side plate 30 more securely assembled.

[0236] In the above technical solution, the third sidewall 215 has a protrusion 216 that protrudes from the first sidewall 211 towards the box cover 22. A second assembly notch 217 is formed at the inner corner of the protrusion 216. After the mounting side plate 30 is assembled into the second assembly notch 217 of the two third sidewalls 215, the third sidewall 215 and the mounting side plate 30 abut and limit each other along the second direction. The third sidewall 215 can restrict the mounting side plate 30 from moving towards the mounting cavity along the second direction, thereby making the mounting side plate 30 more securely assembled.

[0237] According to some embodiments of this application, such as Figure 3 As shown, along the second direction, the second assembly notch 217 and the third sidewall 215 are adjacent to the ends of the first sidewall 211. From the mounting cavity to the first sidewall 211, the second assembly notch 217 extends to the end of the third sidewall 215 near the first sidewall 211. The mounting side plate 30 moves from the end of the third sidewall 215 near the first sidewall 211 towards the mounting cavity, thus installing the mounting side plate 30 at the second assembly notch 217. Then, the mounting side plate 30 and the cover 22 are fixedly assembled. If it is necessary to remove the mounting side plate 30, the mounting side plate 30 can be moved along the second direction away from the mounting cavity, and the mounting side plate 30 can be moved out of the second assembly notch 217 from the end of the third sidewall 215 near the first sidewall 211.

[0238] According to some embodiments of this application, such as Figure 5 As shown, all heat exchange sections 40 are constructed as heat exchange plates.

[0239] The heat exchange plate has a plate-like structure, and each heat exchange section 40 is a single plate. The heat exchange section 40 can be made of metal.

[0240] In the above technical solution, by constructing the heat exchange section 40 as a heat exchange plate, it is beneficial to increase the heat exchange area between the heat exchange section 40 and the battery pack 91, and improve the heat exchange effect between the heat exchange section 40 and the battery cell 10.

[0241] According to some embodiments of this application, such as Figure 5 As shown, at least one heat exchange section 40 has at least one through hole 46. A battery pack 91 adjacent to the heat exchange section 40 has multiple battery packs 91. At least two adjacent battery packs 91 are spaced apart, and no heat exchange is required between the adjacent two battery packs 91. Along the first direction, the through hole 46 is positioned opposite to the position between the adjacent two battery packs 91. By providing the through hole 46, the weight of the heat exchange section 40 can be reduced, facilitating a lightweight design of the battery device 100.

[0242] According to some embodiments of this application, such as Figure 5As shown, at least one heat exchange part 40 is provided with a third mounting hole 47. Specifically, the second heat exchange part 42 is provided with a third mounting hole 47. There are multiple third mounting holes 47. The second heat exchange part 42 is fixed to the housing body 21 by bolts passing through the third mounting holes 47 and being assembled with the mounting beam of the housing body 21.

[0243] According to some embodiments of this application, such as Figure 3 As shown, the battery device 100 also includes an electrical connection mechanism 90, which is fixed to the mounting side plate 30 and is located on the side of the mounting side plate 30 away from the mounting cavity.

[0244] The battery device 100 may further include an electrical connection mechanism 90, which includes a high-voltage connector and a low-voltage connector. The electrical connection mechanism 90 can be fixed to the mounting side plate 30 by bolts or by snap-fit. Along the second direction, the electrical connection mechanism 90 is located on the side of the mounting side plate 30 opposite to the mounting cavity; that is, the electrical connection mechanism 90 is located outside the mounting cavity.

[0245] In the above technical solution, by positioning the electrical connection mechanism 90 on the side of the mounting side plate 30 away from the mounting cavity, the risk of the electrical connection mechanism 90 occupying space in the mounting cavity is reduced, which is more conducive to increasing the space for arranging battery cells 10 in the mounting cavity, thereby allowing more battery cells 10 to be installed in the mounting cavity, which is more conducive to improving the energy density of the battery device 100, and also more conducive to improving the space utilization rate of the mounting cavity in the battery device 100, thus making the setting position of the electrical connection mechanism 90 reasonable.

[0246] According to some embodiments of this application, the number of battery packs 91 is equal to the number of heat exchange sections 40. Multiple heat exchange sections 40 are arranged sequentially at intervals along a first direction. A layer of battery packs 91 is disposed between any two adjacent heat exchange sections 40, and a layer of battery packs 91 is disposed above the uppermost heat exchange section 40. The heat exchange section 40 exchanges heat with the adjacent battery packs 91 above it. The multiple heat exchange sections 40 are independently arranged, allowing for more precise thermal management of the heating characteristics of the corresponding battery packs 91. This enables the individual battery cells 10 of each layer of battery packs 91 to operate stably in a suitable temperature environment, which is beneficial for improving the performance and lifespan of the battery device 100.

[0247] According to some embodiments of this application, this application also provides an electrical device, including the battery device 100 of the above embodiments, the battery device 100 being used to store or provide electrical energy.

[0248] In the above technical solution, since the power-consuming device includes the battery device 100 of the above embodiment, the battery device 100 can store more electrical energy and provide energy guarantee for the efficient operation of the power-consuming device, meeting the usage needs in more complex scenarios and enhancing the competitiveness of the power-consuming device in the market.

[0249] According to some embodiments of this application, such as Figures 3-15 As shown, this application provides a battery device 100, including: a housing 20, a communication mechanism 50, a multi-layer battery pack 91, and a plurality of heat exchange sections 40. Each battery pack 91 includes a plurality of battery cells 10 arranged on a first plane. The multi-layer battery packs 91 are arranged sequentially along a first direction, and the first direction, the second direction, and the first plane are perpendicular to each other. The housing 20 defines a mounting cavity for mounting the multi-layer battery pack 91. The housing 20 has a mounting sidewall 23 located on one side of the mounting cavity along the second direction, and the mounting sidewall 23 forms an assembly space 231 that opens toward the mounting cavity. Two heat exchange sections 40 are disposed in the mounting cavity and arranged sequentially at intervals along the first direction. A layer of battery pack 91 is disposed between two adjacent heat exchange sections 40, and a layer of battery pack 91 is disposed above the uppermost heat exchange section 40. The heat exchange section 40 exchanges heat with the adjacent battery pack 91 above it. The connecting mechanism 50 is fixed to the mounting side wall 23. The connecting mechanism 50 is connected to multiple heat exchange sections 40 so that the heat exchange medium flows into the multiple heat exchange sections 40 through the connecting mechanism 50 and the heat exchange medium in the multiple heat exchange sections 40 flows out through the connecting mechanism 50. At least a part of the connecting mechanism 50 is assembled in the assembly space 231.

[0250] The housing 20 includes a housing body 21, a cover 22, and a mounting side plate 30. Along a first direction, the cover 22 and the mounting side plate 30 are located on the same side of the housing body 21. The housing body 21, cover 22, and mounting side plate 30 together define a mounting cavity for mounting multiple battery cells 10. Along a second direction, the mounting side plate 30 is located on one side of the mounting cavity. A portion of the connecting mechanism 50 is located on the side of the mounting side plate 30 opposite to the mounting cavity. The connecting mechanism 50 includes two connecting connectors 51. One connecting connector 51 is configured as a medium inflow connector 52, and the other connecting connector 51 is configured as a medium outflow connector 53. Each connecting connector 51 has a first interface 511 and two second interfaces 512. The first interface 511 of the medium inflow connector 52 communicates with a medium source outlet, and the first interface 511 of the medium outflow connector 53 communicates with a medium source inlet. At least a portion of the connecting structure 80 is disposed within the assembly space 231. There are two connecting structures 80, and the two connecting structures 80 and the two connecting connectors 51 are connected in a one-to-one correspondence. The connecting structure 80 includes a first connecting pipe 81 and a second connecting pipe 82. One second port 512 of the medium inflow connector 52 is connected to the first heat exchange section 41 through the first connecting pipe 81, and the other second port 512 of the medium inflow connector 52 is connected to the second heat exchange section 42 through the second connecting pipe 82. One second port 512 of the medium outflow connector 53 is connected to the first heat exchange section 41 through the first connecting pipe 81, and the other second port 512 of the medium outflow connector 53 is connected to the second heat exchange section 42 through the second connecting pipe 82. The battery device 100 also includes an electrical connection mechanism 90, which is fixed to the mounting side plate 30 and located on the side of the mounting side plate 30 opposite to the mounting cavity.

[0251] 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.

[0252] Other components of the battery device 100 according to the embodiments of this application, such as busbars and explosion-proof valves, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0253] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0254] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: A multi-layer battery pack, each layer of the battery pack comprising a plurality of battery cells arranged on a first plane, the multi-layer battery pack being arranged sequentially along a first direction, the first direction intersecting the first plane; The housing defines a mounting cavity for mounting multiple layers of the battery pack, the housing having a mounting sidewall along a second direction, the mounting sidewall being located on one side of the mounting cavity, the mounting sidewall forming an assembly space opening toward the mounting cavity, the first direction and the second direction intersecting; Multiple heat exchange sections are disposed in the mounting cavity and arranged sequentially along the first direction, and each heat exchange section exchanges heat with at least one of the battery packs. A connecting mechanism is fixed to the mounting sidewall and is connected to multiple heat exchange sections to allow heat exchange medium to flow into the multiple heat exchange sections through the connecting mechanism and allow heat exchange medium in the multiple heat exchange sections to flow out through the connecting mechanism. At least a portion of the connecting mechanism is assembled within the assembly space. The enclosure includes an enclosure body, an enclosure lid, and a mounting side panel. The enclosure body, the enclosure lid, and the mounting side panel together define the mounting cavity. Along the first direction, the enclosure lid and the mounting side panel are located on the same side of the enclosure body. The enclosure body has a first side wall that is opposite to the mounting side panel along the first direction. The first side wall and the mounting side panel are connected to form the mounting side wall. The first side wall and the mounting side panel together define the assembly space. A portion of the communicating mechanism is located on the mounting side panel. The communication mechanism includes: a plurality of communication joints, wherein the plurality of communication joints are disposed on the side of the mounting side plate away from the mounting cavity; the communication mechanism further includes: a plurality of communication structures, wherein at least a portion of the plurality of communication structures are disposed within the assembly space, wherein the plurality of communication structures and the plurality of communication joints correspond one-to-one, and the communication structure connects the corresponding communication joint and the plurality of heat exchange parts.

2. The battery device according to claim 1, characterized in that, A portion of the connecting mechanism is located on the side of the mounting side plate opposite to the mounting cavity.

3. The battery device according to claim 1, characterized in that, A portion of the plurality of connecting joints is configured as a medium inflow joint, and another portion of the plurality of connecting joints is configured as a medium outflow joint. Each medium inflow joint is connected to the plurality of heat exchange sections to allow heat exchange medium to flow into the plurality of heat exchange sections, and each medium outflow joint is connected to the plurality of heat exchange sections to allow heat exchange medium to flow out of the plurality of heat exchange sections.

4. The battery device according to claim 3, characterized in that, The plurality of connecting joints are arranged sequentially along a third direction, and the first direction intersects with both the second direction and the third direction.

5. The battery device according to claim 4, characterized in that, Each of the connecting joints has a first interface, the first interface of the medium inflow joint is the medium inlet, the first interface of the medium outflow joint is the medium outlet, and the orientation of the medium inlet and the orientation of the medium outlet are the same.

6. The battery device according to claim 5, characterized in that, The medium inlet and the medium outlet are arranged along the third direction.

7. The battery device according to claim 5, characterized in that, The mounting side panel includes: a first plate and a second plate. Along the first direction, the first plate is located on the side of the second plate opposite to the housing body. The first plate and the second plate are bent together to form a mounting space on the side of the first plate opposite to the mounting cavity. At least a portion of each of the connecting joints is located within the mounting space.

8. The battery device according to claim 7, characterized in that, Each of the connecting joints has a second interface, which is connected to the first interface of the corresponding connecting joint, and the second interface is used to connect to the corresponding heat exchange section.

9. The battery device according to claim 8, characterized in that, Each of the connecting joints has a plurality of second interfaces, and the plurality of second interfaces are connected to the plurality of heat exchange units in a one-to-one correspondence.

10. The battery device according to claim 9, characterized in that, The mounting side plate has multiple clearance structures, and each clearance structure corresponds to a multiple connecting joint. Each clearance structure includes a clearance hole communicating with the mounting cavity, and multiple second interfaces of the connecting joint correspond to the clearance holes of the corresponding clearance structures.

11. The battery device according to claim 10, characterized in that, Each of the avoidance structures includes a plurality of avoidance holes, and the plurality of second interfaces of the connecting connector correspond one-to-one with the plurality of avoidance holes of the corresponding avoidance structure.

12. The battery device according to claim 11, characterized in that, Each of the aforementioned clearance structures includes two clearance holes, which are respectively a first clearance hole and a second clearance hole. The first plate has the first clearance hole, and the second plate has the second clearance hole. Each of the connecting joints has two second interfaces, with one second interface formed on the side of the connecting joint facing the first plate and one on the side facing the second plate, and the two second interfaces corresponding to the corresponding first clearance hole and second clearance hole, respectively.

13. The battery device according to claim 12, characterized in that, Each of the connecting joints has a first connecting post formed on the side facing the second plate, the first connecting post having a second interface, and the first connecting post passing through the second clearance hole.

14. The battery device according to claim 12, characterized in that, The plurality of heat exchange units include: a first heat exchange unit and a second heat exchange unit. Along the first direction, the first heat exchange unit is located between the cover and the second heat exchange unit. The communication structure includes a first communication pipe and a second communication pipe. The first communication pipe connects the first heat exchange unit and the second interface of the corresponding communication connector facing the first plate. The second communication pipe connects the second heat exchange unit and the second interface of the corresponding communication connector facing the second plate. The second communication pipe is disposed within the assembly space.

15. The battery device according to claim 14, characterized in that, The first sidewall includes a sidewall body, the sidewall body and the mounting side plate are arranged and connected along the first direction, the assembly space is located between the mounting cavity and the sidewall body along the second direction, the second connecting pipe extends along the first direction, the inner surface of the sidewall body is formed with an avoidance groove, and at least a portion of the second connecting pipe is located in the avoidance groove.

16. The battery device according to claim 15, characterized in that, The first sidewall also includes a mounting boss. The mounting boss is formed on the inner surface of the sidewall body near the mounting cavity, so that the sidewall body and the mounting boss together define the assembly space. The mounting boss has a mounting hole that penetrates the mounting boss along the first direction. Along the first direction, the mounting boss and the second plate are opposite each other. The assembly space is located between the mounting boss and the second plate. The second heat exchange part is located on the side of the mounting boss away from the cover. The second heat exchange part has a second connecting post protruding towards the mounting boss. The second connecting post passes through the mounting hole. The second connecting pipe and the second connecting post are connected to communicate with the second heat exchange part.

17. The battery device according to claim 14, characterized in that, The connecting joint has a mounting portion, the mounting portion has a first mounting hole, the first connecting pipe has a mounting flange, the mounting flange has a second mounting hole, and fasteners are inserted through the second mounting hole and assembled into the first mounting hole to fix the first connecting pipe to the mounting portion.

18. The battery device according to claim 17, characterized in that, There are multiple mounting parts, and the multiple mounting parts are arranged around the second interface on the corresponding side of the connecting joint.

19. The battery device according to any one of claims 1-18, characterized in that, The mounting side plate is sandwiched between the box cover and the box body, and the mounting side plate is fixed to at least one of the box body and the box cover.

20. The battery device according to claim 19, characterized in that, The lid has a second sidewall, and the first sidewall, the mounting side plate, and the second sidewall are arranged along the first direction, with the mounting side plate sandwiched between the first sidewall and the second sidewall.

21. The battery device according to claim 20, characterized in that, The second sidewall has a first assembly notch, at least a portion of the mounting side plate is adapted to the shape of the first assembly notch, and the mounting side plate is assembled to the first assembly notch.

22. The battery device according to claim 21, characterized in that, The second sidewall has a mounting flange, which is provided along the edge of the first assembly notch. The end face of the mounting side plate facing the second sidewall has a mounting structure, which is opposite to the mounting flange and is fixed to the mounting flange.

23. The battery device according to claim 22, characterized in that, The mounting flange and the mounting structure are adapted to each other in shape.

24. The battery device according to claim 20, characterized in that, The housing body also has two third sidewalls, which are spaced apart along a third direction. The first sidewall is located between the two third sidewalls and, along the first direction, the third sidewall has a protrusion that protrudes from the first sidewall toward the housing cover. A second mounting notch is formed at the inner corner of the protrusion. The mounting side plate is located between the two third sidewalls and is mounted on the second mounting notch so that the third sidewall restricts the mounting side plate from moving toward the mounting cavity along the second direction.

25. The battery device according to any one of claims 1-18, characterized in that, All heat exchange components are constructed as heat exchange plates.

26. The battery device according to any one of claims 1-18, characterized in that, The battery device further includes an electrical connection mechanism, which is fixed to the mounting side plate and located on the side of the mounting side plate opposite to the mounting cavity.

27. An electrical appliance, characterized in that, Includes the battery device according to any one of claims 1-26.

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