Battery device and electric device

Abstract

The application provides a battery device and a power utilization device. The battery device comprises a box body and a battery module unit. The battery module unit comprises: a battery monomer assembly comprising a plurality of battery monomers; two end plates respectively arranged at opposite ends of the battery monomer assembly along a first direction; and two side plates respectively arranged at opposite sides of the battery monomer assembly along a second direction, wherein the first direction is perpendicular to the second direction. The two side plates and the two end plates enclose a receiving space for accommodating the battery monomer assembly, and at least one end of each side plate is connected to a corresponding end plate through a first elastic structure along the first direction. At least one end of each side plate is connected to an end plate through a first elastic structure, so that the two end plates are relatively pressed, the first elastic structure is compressed and deformed, and the length of the battery module unit along the first direction is reduced, thereby facilitating the placement of the battery module unit in the box body.

Description

[0001] This application claims priority to Chinese Patent Application No. 202422307605.7, filed on September 20, 2024, entitled "Battery Device and Electric Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of battery technology, and more specifically, relates to a battery device and an electrical device. Background Technology

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0004] A battery module unit typically includes a battery cell assembly, side plates located on opposite sides of the battery cell assembly, and end plates located at opposite ends of the battery cell assembly. The two end plates connect to the two side plates and surround the battery cell assembly. After assembly, the battery module unit needs to be installed in a housing, secured by the housing's beams. However, because the end plates and side plates limit the length of the battery module unit, the position of the beams needs to be adjusted after the battery module unit is installed in the housing, making battery module unit installation inconvenient. Summary of the Invention

[0005] The purpose of this application is to provide a battery device and an electrical device to improve the problem of inconvenient packaging of battery module units in related technologies.

[0006] In a first aspect, embodiments of this application provide a battery device, including a housing and a battery module unit, the battery module unit comprising:

[0007] A battery cell assembly, comprising multiple battery cells;

[0008] Two end plates are respectively disposed at opposite ends of the battery cell assembly along the first direction;

[0009] Two side plates are respectively disposed on opposite sides of the battery cell assembly along the second direction, with the first direction perpendicular to the second direction;

[0010] The two side plates and the two end plates form a space for accommodating the battery cell assembly, and at least one end of each side plate along the first direction is connected to the corresponding end plate through a first elastic structure.

[0011] In the technical solution of this application embodiment, side plates and end plates are provided to surround the battery cell assembly to fix and protect the battery cell assembly; at least one end of each side plate along the first direction is connected to the end plate through a first elastic structure, so that the two end plates are pressed against each other, and the first elastic structure can be compressed and deformed, thereby reducing the length of the battery module unit along the first direction, so as to facilitate the placement of the battery module unit in the housing. After the battery module unit is placed in the housing, due to the natural rebound of the first elastic structure and the battery cell, the end plates can abut against the frame of the housing, fixing the battery module unit to the housing.

[0012] In some embodiments, each side plate is connected to its corresponding end plate at its opposite ends along the first direction via a first elastic structure.

[0013] Each end of the side panel is connected to a first elastic structure. When the end panels are pressed, the pressing force can be quickly transmitted to the adjacent first elastic structure to compress the first elastic structure. In addition, the first elastic structure is provided at each end of the side panel, which can increase the overall compression of the battery module unit, making it easier to compress the battery module unit and place it in the housing.

[0014] In some embodiments, the first elastic structure is sealed to the corresponding side plate and the corresponding end plate.

[0015] By sealing the first elastic structure with the corresponding side plate and end plate, the battery cells can be better isolated and protected. In particular, when the battery cells are immersed in temperature regulation, the leakage of the temperature regulation liquid can be prevented to a certain extent.

[0016] In some embodiments, the first elastic structure includes an elastic block, the two ends of which are respectively connected to a corresponding side plate and a corresponding end plate.

[0017] The use of elastic blocks results in high structural strength and facilitates connection with corresponding side plates and end plates.

[0018] In some embodiments, the elastic block is a rubber block or a silicone block.

[0019] Using rubber or silicone blocks is low-cost, easy to process and manufacture, has a high compression ratio, and facilitates pressing the end plate to adjust the length of the battery module unit.

[0020] In some embodiments, the end of the elastic block connected to the side plate has a first head and a first contraction portion. Along the second direction, the size of the first head is larger than the size of the first contraction portion, and the side plate is provided with a first slot adapted to accommodate the first head and the first contraction portion.

[0021] The elastic block is provided with a first head and a first contraction part so that it can be inserted into the first slot of the side plate to realize the connection between the elastic block and the side plate. Moreover, since the size of the first head is larger than the size of the first contraction part, placing the first head and the first contraction part in the first slot can effectively prevent the first head from detaching from the first slot, so as to achieve good fixation between the elastic block and the side plate.

[0022] In some embodiments, the first head has an arc-shaped or polygonal cross-section along the direction perpendicular to the height of the box.

[0023] The structure and shape of the first head described above are simple and can be easily selected and manufactured according to needs.

[0024] In some embodiments, the end of the elastic block connected to the end plate has a second head and a second contraction portion. Along the second direction, the size of the second head is larger than the size of the second contraction portion, and the end plate is provided with a second slot adapted to accommodate the second head and the second contraction portion.

[0025] The elastic block is provided with a second head and a second contraction part so that it can be inserted into the second slot of the end plate to realize the connection between the elastic block and the end plate. Moreover, since the size of the second head is larger than the size of the second contraction part, placing the second head and the second contraction part in the second slot can effectively prevent the second head from detaching from the second slot, so as to achieve good fixation between the elastic block and the end plate.

[0026] In some embodiments, the second head has an arc-shaped or polygonal cross-section along the direction perpendicular to the height of the housing.

[0027] The structure of the second head described above is simple and can be easily selected and manufactured according to needs.

[0028] In some embodiments, the first elastic structure includes an elastic sheet.

[0029] The first elastic structure uses an elastic sheet, which can be easily compressed to reduce the length of the battery module unit, making it easier to install into the housing.

[0030] In some embodiments, the elastic sheet is bonded to the corresponding side plate and the corresponding end plate, or / and the elastic sheet is connected to the corresponding side plate and the corresponding end plate by fasteners.

[0031] The elastic sheet is bonded to the corresponding side plate and the corresponding end plate, making the connection convenient.

[0032] The elastic sheet is connected to the corresponding side plate and the corresponding end plate with fasteners, making the connection more secure.

[0033] In some embodiments, the elastic sheet includes a rubber sheet or a silicone sheet.

[0034] Elastic sheets are made of rubber or silicone, which are easy to manufacture, low in cost, and convenient to produce.

[0035] In some embodiments, the battery module unit further includes a reinforcing beam extending in a second direction, at least one end of which is connected to an end plate via a second elastic structure.

[0036] A reinforcing beam is provided to enhance the structural strength of the battery module unit; at least one end of the reinforcing beam is connected to the end plate through a second elastic structure so that when the end plate is pressed, the second elastic structure and the first elastic structure can be compressed together to compress the length of the battery module unit, thereby facilitating the placement of the battery cell in the housing.

[0037] In some embodiments, the two ends of the second elastic structure are respectively sealed to the corresponding end plate and the reinforcing beam.

[0038] By sealing the two ends of the second elastic structure to the reinforcing beam and the corresponding end plate, the battery cells on both sides of the reinforcing beam can be better isolated and protected. In particular, when the battery cells are immersed for temperature regulation, the temperature regulation liquid on both sides of the reinforcing beam can be prevented from flowing through the reinforcing beam to a certain extent.

[0039] In some embodiments, an elastic element is provided between two adjacent battery cells.

[0040] An elastic element is installed between two adjacent battery cells. On the one hand, it provides expansion space for the normal expansion and deformation of the battery cells. On the other hand, when the end plate is pressed, the elastic element can be compressed to compress the length of the battery cell module, making it easier to place the battery module unit in the housing.

[0041] In some embodiments, the elastic element is plate-shaped to separate two adjacent battery cells.

[0042] Using plate-shaped elastic elements to separate adjacent battery cells, the battery module unit is placed in the housing. Due to the positional limitation of the housing frame, the elastic elements can better support the adjacent battery cells, thereby restraining the position of the battery cells and fixing them more stably in the housing. In addition, using plate-shaped elastic elements to separate the battery cells can also reduce the mutual influence of heat between the battery cells.

[0043] In some embodiments, the elastic element is strip-shaped, and the elastic element is provided on the upper part of the battery cell along the height direction.

[0044] Using strip-shaped elastic elements, and placing the elastic elements at the top of the battery cell in the height direction, can reduce the amount of elastic element material used, thereby reducing costs and the weight of the battery module unit. In addition, when the bottom of the battery cell is bonded and fixed to the bottom of the housing, a cavity is formed between the elastic element and the bottom of the housing, which in some cases can allow the flow of temperature-regulating liquid to regulate the temperature of the battery cell.

[0045] In some embodiments, an elastic element is provided at the lower part of the battery cell along the height direction, and a flow channel is formed at the middle part of the adjacent battery cell along the height direction.

[0046] Elastic elements are installed at the top and bottom of the battery cell along its height. When the battery module unit is compressed, the top and bottom of the battery cell are subjected to the elastic force of the elastic elements, making the force on the battery cell more balanced in the height direction, which facilitates the compression of the overall length of the battery module unit. Due to the spacing of the elastic elements at the top and bottom of the battery cell along its height direction, a flow channel can be formed between adjacent battery cells along the middle of the height direction. In some cases, this can allow temperature-regulating liquid to flow through, so as to regulate the temperature of the battery cell.

[0047] Secondly, embodiments of this application provide an electrical device, including a battery device as described in the above embodiments, the battery device being used to store or provide electrical energy.

[0048] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0051] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0052] Figure 3 This is a schematic diagram of the structure of a battery module unit according to some embodiments of this application;

[0053] Figure 4This is a top view of a battery module unit according to some embodiments of this application;

[0054] Figure 5 For along Figure 4 A partial cross-sectional view of the middle AA line;

[0055] Figure 6 This is a top view of the battery module unit according to other embodiments of this application;

[0056] Figure 7 This is a top view of a battery module unit according to some embodiments of this application;

[0057] Figure 8 This is a schematic diagram of the structure of the connection portion between the side plate and the end plate in some embodiments of this application;

[0058] Figure 9 This is a schematic diagram of the structure of the connection portion between the side plate and the end plate in some other embodiments of this application;

[0059] Figure 10 This is a schematic diagram of the structure of the connection portion between the side plate and the end plate in some embodiments of this application;

[0060] Figure 11 This is a structural schematic diagram of the connection portion between the side plate and the end plate in some embodiments of this application;

[0061] Figure 12 This is a schematic diagram of the structure of the connection portion between the side plate and the end plate in some embodiments of this application;

[0062] Figure 13 This is a top view of a battery module unit according to some embodiments of this application.

[0063] The main markings in the attached figures are as follows:

[0064] 11. Vehicle; 111. Controller; 112. Motor;

[0065] 200. Battery assembly; 20. Housing; 21. Top cover; 22. Base plate; 23. Frame; 231. Side beam; 232. Expansion beam;

[0066] 300. Battery module unit; 31. Battery cell assembly; 311. Battery cell; 32. Side plate; 321. First slot; 33. End plate; 331. Second slot; 34. First elastic structure; 341. Elastic block; 3411. First head; 3412. First contraction section; 3413. Second head; 3414. Second contraction section; 342. Elastic sheet; 35. Reinforcing beam; 36. Second elastic structure; 37. Elastic element; 38. Flow channel; 39. Fastener;

[0067] X, length direction; Y, width direction; Z, height direction; M, first direction; N, second direction. Detailed Implementation

[0068] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0070] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0071] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0072] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0073] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0074] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces). "Several" means one or more, unless otherwise explicitly specified.

[0075] In the description of the embodiments of this application, the technical terms "center", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0076] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0077] In the description of the embodiments of this application, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0078] In the description of the embodiments in this application, unless otherwise expressly specified and limited, the technical term "proximity" refers to being close in location. For example, among three components A1, A2, and B, the distance between A1 and B is greater than the distance between A2 and B. Therefore, A2 is closer to B than A1, meaning A2 is adjacent to B, or B is adjacent to A2. Similarly, when there are multiple components C, namely C1, C2, ..., C... N If one of the C components, such as C2, is closer to the B component than the other C components, then B is adjacent to C2, or C2 is adjacent to B.

[0079] After assembly, the battery module unit needs to be placed in a housing for support and protection. A typical battery module unit includes a battery cell assembly, two side plates, and two end plates. The battery cell assembly generally consists of multiple battery cells arranged in one direction. The two side plates are located on opposite sides of the battery cell assembly, and the two end plates are located at opposite ends of the battery cell assembly. The end plates connect to the two side plates and surround the battery cell assembly to fix and protect it, facilitating assembly and placement within the housing. After placement, the battery module unit is secured by beams such as side beams and expansion beams. However, because the end plates and side plates limit the length of the battery module unit, adjusting the beam positions is necessary to ensure the beams support the end plates and secure the unit. This complicates the housing structure and makes battery module unit placement inconvenient.

[0080] Based on the above considerations, in order to improve the problem of inconvenient battery module unit packaging, this application provides a battery device. By connecting at least one end of each side plate of the battery module unit to the corresponding end plate using a first elastic structure, the two end plates can be pressed against each other before the battery module unit is packaged. The pressing force is transmitted to the first elastic structure, causing the first elastic structure to compress and deform, thereby reducing the length of the battery module unit along the first direction, so that the battery module unit can be placed into the box. After the battery module unit is placed into the box, the pressing force on the end plates is released, and the battery cell and the first elastic structure naturally rebound, pushing the two end plates away from each other, thereby restoring the length of the battery module unit and causing the two end plates to abut against the frame of the box, thus fixing the battery module unit in the box. Packaging is convenient, and there is no need to adjust the position of the beams in the box, which can simplify the structure of the box, reduce the cost of the battery device, and improve the assembly efficiency of the battery device.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] For ease of explanation, an electrical device is provided in one embodiment of this application, which is illustrated using a vehicle as an example.

[0085] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 11 provided in some embodiments of this application. The vehicle 11 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 200 is provided inside the vehicle 11, and the battery device 200 can be located at the bottom, front, or rear of the vehicle 11. The battery device 200 can be used to power the vehicle 11; for example, the battery device 200 can serve as the operating power source for the vehicle 11. The vehicle 11 may also include a controller 111 and a motor 112. The controller 111 is used to control the battery device 200 to supply power to the motor 112, for example, to meet the power needs of the vehicle 11 during starting, navigation, and driving.

[0086] In some embodiments, the battery device 200 can not only serve as the operating power source for the vehicle 11, but also as the driving power source for the vehicle 11, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 11.

[0087] Please refer to Figure 2 This application provides a battery device 200. The battery device 200 includes one or more battery cell assemblies 31 for providing voltage and capacity. The battery cell assembly 31 may include multiple battery cells 300, which are connected in series, parallel, or mixed connection via a busbar.

[0088] In some embodiments, the battery cell assembly 31 is typically formed by arranging a plurality of battery cells 311. The plurality of battery cells 311 may be arranged in one column or in multiple columns. Each column may include a plurality of battery cells 311.

[0089] As an example, the battery cell assembly 31 can be a battery module, which is formed by arranging and fixing multiple battery cells 311 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 311 together with cable ties.

[0090] In some embodiments, the battery device 200 may be a battery pack, which includes a housing 20 and one or more battery cell assemblies 31, the battery cell assemblies 311 being housed in the housing 20.

[0091] As an example, the battery cell assembly 31 can be a battery module, which can be housed in the housing 20 by fixing the battery module in the housing 20.

[0092] As an example, the battery cell assembly 31 can also be housed in the housing 20 by directly fixing multiple battery cells 311 to the housing 20.

[0093] In some embodiments, the battery device 200 includes one or more battery module units 300. Each battery module unit 300 includes a battery cell assembly 31. Each battery module unit 300 includes two side plates 32 and two end plates 33. The two side plates 32 are located on opposite sides of the battery module unit 300, and the two end plates 33 are located at opposite ends of the battery module unit 300. The two side plates 32 and two end plates 33 are connected to surround the battery cell assembly 31, protecting the battery cells 311. The two side plates 32 and two end plates 33 also bind multiple battery cells 311 of the battery cell assembly 31 to form an independent module, facilitating assembly and use.

[0094] As an example, multiple battery cells 311 are arranged in a row, with the side plate 32 located on the side of the battery cell 311 with the largest area. As an example, with multiple battery cells 311 arranged in a row, the end plate 33 can also be located on the side of the battery cell 311 with the largest area.

[0095] In some embodiments, the battery device 200 includes a housing 20, in which a battery module unit 300 is housed, and the housing 20 supports and protects the battery module unit 300.

[0096] In some embodiments, the housing 20 may include a top cover 21, a frame 23, and a bottom plate 22. The top cover 21 and the bottom plate 22 are respectively connected to opposite sides of the frame 23, thereby forming a closed space inside the housing 20 to accommodate the battery module unit 300. The frame 23 refers to the part of the structure that forms the peripheral sidewalls and support structure of the housing 20, the top cover 21 refers to the plate-like structure that forms the top of the housing 20, and the bottom plate 22 refers to the plate-like structure that forms the bottom of the housing 20.

[0097] In some embodiments, the housing 20 may include a first housing and a second housing, which are fastened together to form a closed space inside the housing 20 to house the battery module unit 300. Here, "closed" refers to covering or shutting down, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate of the housing 20. Both the first and second housings may also be hollow structures with an opening on one side, with the opening side of the first housing fitting over the opening side of the second housing.

[0098] In some embodiments, the frame 23 includes a plurality of side beams 231 that form a frame to accommodate the battery module unit 300. The side beams 231 refer to the portion of the structure that forms the peripheral sidewall of the housing 20.

[0099] In some embodiments, the frame 23 includes an expansion beam 232 connected to the side beam 231. The expansion beam 232 increases the structural strength of the frame 23 and can also be used to support the battery cells 311, limiting their expansion deformation. Additionally, when the battery module unit 300 includes an end plate 33 and a side plate 32, the expansion beam 232 can also be used to support either the end plate 33 or the side plate 32 to secure the battery module unit 300.

[0100] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0101] Please see Figure 2 The housing 20 has a length direction, a width direction, and a height direction, where the X direction represents the length direction of the housing 20, the Y direction represents the width direction of the housing 20, and the Z direction represents the height direction of the housing 20. Since the housing 20 defines the shape of the battery device 200, the length direction X represents the length direction of the battery device 200, the width direction Y represents the width direction of the battery device 200, and the height direction Z represents the height direction of the battery device 200.

[0102] Please see Figures 2 to 5 According to some embodiments of this application, this application provides a battery device 200, including a housing 20 and a battery module unit 300, the battery module unit 300 being installed in the housing 20. The battery module unit 300 includes a battery cell assembly 31, two end plates 33, and two side plates 32. The battery cell assembly 31 includes a plurality of battery cells 311. The two end plates 33 are respectively disposed at opposite ends of the battery cell assembly 31 along a first direction M. The two side plates 32 are respectively disposed on opposite sides of the battery cell assembly 31 along a second direction N, the first direction M being perpendicular to the second direction N. The two side plates 32 and the two end plates 33 form a receiving space for accommodating the battery cell assembly 31, and at least one end of each side plate 32 along the first direction M is connected to the corresponding end plate 33 through a first elastic structure 34.

[0103] The housing 20 refers to the outer shell structure of the battery device 200. The battery module unit 300 is installed in the housing 20, which supports and fixes the battery module unit 300.

[0104] Battery module unit 300 refers to the module in housing 20 used to provide electrical energy.

[0105] The battery cell assembly 31 is an assembly formed by arranging multiple battery cells 311. The multiple battery cells 311 can be arranged in one or more columns, that is, the battery cell assembly 31 can include one or more columns, and each column includes multiple battery cells 311.

[0106] The first direction M is perpendicular to the second direction N. The first direction M can be parallel to or perpendicular to the length direction X of the housing 20. Of course, in some embodiments, the first direction M can also be inclined to the length direction X of the housing 20. Both the first direction M and the second direction N are perpendicular to the height direction Z of the housing 20.

[0107] End plate 33 refers to a plate or beam located at the end of the battery cell assembly 31 along the first direction M, and the first direction M is perpendicular to the plane where the end plate 33 is located. The end plate 33 can be a structural component made of materials such as plastic or metal. By setting the end plate 33, the end of the battery cell assembly 31 is defined, the end of the battery cell assembly 31 is protected, and the end of the battery cell assembly 31 can be limited.

[0108] Side plate 32 refers to a plate or beam located on the side of battery cell assembly 31 along the second direction N, and the second direction N is perpendicular to the plane where side plate 32 is located. Side plate 32 can be a structural component made of materials such as plastic or metal. By setting side plate 32, the side of battery cell assembly 31 is defined, the side of battery cell assembly 31 is protected, and the side of battery cell assembly 31 can be limited.

[0109] Two side plates 32 are connected to two end plates 33, that is, one side plate 32 is connected to the same end of the two end plates 33, and the other side plate 32 is connected to the other end of the two end plates 33, thereby forming a frame structure and creating a receiving space in the frame structure to accommodate the battery cell assembly 31, thereby constraining the battery cell assembly 31 by the two side plates 32 and the two end plates 33.

[0110] The first elastic structure 34 refers to a structure that can elastically deform, that is, the first elastic structure 34 can be compressed when subjected to external force, and can be stretched when subjected to external force. After the external force leaves the first elastic structure 34, the first elastic structure 34 can automatically return to its original position.

[0111] At least one end of each side plate 32 along the first direction M is connected to the corresponding end plate 33 via the first elastic structure 34. This means that one end of each side plate 32 along the first direction M is connected to the corresponding end plate 33 via the first elastic structure 34, or both ends of the side plate 32 along the first direction M are connected to the corresponding end plate 33 via the first elastic structure 34. Since at least one end of each side plate 32 along the first direction M is connected to the corresponding end plate 33 via the first elastic structure 34, when the two end plates 33 are pressed against each other, the pressure is transmitted from the end plates 33 to the first elastic structure 34, which will compress the first elastic structure 34. The battery cell 311 will expand and deform during charging and discharging. The battery cell 311 itself has a certain deformation space. Therefore, by pressing against the two end plates 33, the length of the battery module unit 300 along the first direction M can be shortened, which makes it easier to place the battery module unit 300 in the housing 20.

[0112] In the technical solution of this application embodiment, side plates 32 and end plates 33 are provided to surround the battery cell assembly 31 to fix and protect the battery cell assembly 31; at least one end of each side plate 32 along the first direction M is connected to the end plate 33 through a first elastic structure 34, so that the two end plates 33 are pressed against each other, and the first elastic structure 34 can be compressed and deformed, thereby reducing the length of the battery module unit 300 along the first direction M, so as to facilitate the placement of the battery module unit 300 in the housing 20. After the battery module unit 300 is placed in the housing 20, due to the natural rebound of the first elastic structure 34 and the battery cell 311, the end plates 33 can abut against the frame 23 of the housing 20, fixing the battery module unit 300 to the housing 20.

[0113] In some embodiments, please refer to Figures 2 to 4 Each side plate 32 is connected to the corresponding end plate 33 at both ends along the first direction M through the first elastic structure 34.

[0114] Each end of the side plate 32 along the first direction M is connected to a first elastic structure 34. When the end plate 33 is pressed, the pressing force can be quickly transmitted to the adjacent first elastic structure 34 to compress the first elastic structure 34. In addition, the first elastic structure 34 is provided at each end of the side plate 32, which can increase the overall compression of the battery module unit 300, making it easier to compress the battery module unit 300 and place it in the housing 20.

[0115] In some embodiments, please refer to Figure 6 and Figure 7 Each side plate 32 can be connected to the corresponding end plate 33 at only one end through the first elastic structure 34, so as to reduce the number of first elastic structures 34 used, thereby reducing costs, reducing the number of parts, and improving assembly efficiency.

[0116] In some embodiments, please refer to Figure 6 The two side plates 32 are respectively connected to the same end plate 33 via a first elastic structure 34. In some embodiments, please refer to... Figure 7 The two side plates 32 are respectively connected to different end plates 33 through the first elastic structure 34. In some embodiments, the two ends of one side plate 32 can be connected to the two end plates 33 through the first elastic structure 34, and one end of the other side plate 32 can be connected to the corresponding end plate 33 through the first elastic structure 34.

[0117] In some embodiments, please refer to Figures 3 to 5 The first elastic structure 34 is sealed to the corresponding side plate 32 and the corresponding end plate 33.

[0118] The first elastic structure 34 is sealed to the corresponding side plate 32 and the corresponding end plate 33, meaning that the first elastic structure 34 is connected to the corresponding side plate 32 and the first elastic structure 34 is sealed to the side plate 32; the first elastic structure 34 is connected to the corresponding end plate 33 and the first elastic structure 34 is sealed to the end plate 33.

[0119] The first elastic structure 34 and the corresponding side plate 32 can be bonded together with sealant to achieve a sealed connection. Alternatively, the first elastic structure 34 can be pressed against the corresponding side plate 32 to achieve a sealed connection. As an example, a groove structure can be provided on the side plate 32, and a portion of the first elastic structure 34 can be squeezed into this groove structure, causing the first elastic structure 34 to press against the side wall of the groove structure, thus achieving a sealed connection between the first elastic structure 34 and the corresponding side plate 32. As an example, rivets, pressure plates, or other structural components can also be used to press a portion of the first elastic structure 34 against the corresponding side plate 32 to achieve a sealed connection.

[0120] The first elastic structure 34 and the corresponding end plate 33 can be bonded together with sealant to achieve a sealed connection. Alternatively, the first elastic structure 34 can also be pressed against the corresponding end plate 33 to achieve a sealed connection. A groove structure can be provided on the end plate 33, and a portion of the first elastic structure 34 can be squeezed into this groove structure, causing the first elastic structure 34 to press against the side wall of the groove structure, thus achieving a sealed connection between the first elastic structure 34 and the corresponding end plate 33. Rivets, pressure plates, or other structural components can also be used to press a portion of the first elastic structure 34 against the corresponding end plate 33 to achieve a sealed connection.

[0121] By sealing the first elastic structure 34 with the corresponding side plate 32 and the corresponding end plate 33, the battery cell 311 can be better isolated and protected. In particular, when the battery cell 311 is immersed in temperature regulation, the leakage of temperature regulation liquid can be prevented to a certain extent.

[0122] Immersion temperature control, also known as immersion temperature control, refers to the use of an insulating temperature-regulating liquid to flow directly through the battery cell 311 to regulate the temperature of the battery cell 311. In other words, the battery cell 311 is fully or partially immersed in the temperature-regulating liquid so that the temperature-regulating liquid directly exchanges heat with the battery cell 311.

[0123] In some embodiments, please refer to Figures 8 to 10 The first elastic structure 34 includes an elastic block 341, and the two ends of the elastic block 341 are respectively connected to the corresponding side plate 32 and the corresponding end plate 33.

[0124] The elastic block 341 refers to an elastic structure that is block-shaped as a whole. The two ends of the elastic block 341 can be connected to the corresponding side plate 32 and the corresponding end plate 33 by adhesive. Of course, the two ends of the elastic block 341 can also be connected in other ways, such as by setting a groove structure on the side of one end of the elastic block 341, and using connectors to fix the side wall of the groove structure to the corresponding side plate 32 and the corresponding end plate 33.

[0125] The use of elastic block 341 provides high structural strength and facilitates connection with the corresponding side plate 32 and end plate 33.

[0126] In some embodiments, the elastic block 341 is a rubber block or a silicone block.

[0127] A rubber block refers to a block-shaped component made of rubber materials. These materials can include natural rubber, styrene-butadiene rubber, cis-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, fluororubber, polyurethane rubber, etc.

[0128] Silicone blocks refer to block-shaped parts made of silicone material.

[0129] Using rubber or silicone blocks is low-cost, easy to process and manufacture, has a high compression ratio, and facilitates pressing the end plate 33 to adjust the length of the battery module unit 300.

[0130] In some embodiments, please refer to Figures 8 to 10 The end of the elastic block 341 connected to the side plate 32 has a first head 3411 and a first contraction part 3412. Along the second direction N, the size of the first head 3411 is larger than the size of the first contraction part 3412. The side plate 32 is provided with a first slot 321 adapted to accommodate the first head 3411 and the first contraction part 3412.

[0131] The first head 3411 refers to the part of the elastic block 341 near the side plate 32, which is used to connect with the side plate 32.

[0132] The first contraction section 3412 refers to the structure that connects the middle part of the first head 3411 and the elastic block 341.

[0133] The size of the first head 3411 refers to the size of the first head 3411 along the second direction N.

[0134] The dimension of the first contraction portion 3412 refers to the dimension of the first contraction portion 3412 along the second direction N.

[0135] The first slot 321 refers to the slot structure opened at the end of the side plate 32. The first slot 321 can extend along the height direction Z of the side plate 32 to facilitate processing and manufacturing. The first head 3411 and the first contraction part 3412 are adapted to be disposed in the first slot 321, so that the first head 3411 and the first contraction part 3412 are connected to the side plate 32 along the entire height of the side plate 32, so that the elastic block 341 is well connected to the side plate 32.

[0136] Since the size of the first head 3411 is larger than the size of the first contraction portion 3412, and the first slot 321 is adapted to accommodate the first head 3411 and the first contraction portion 3412, the width of the portion of the first slot 321 that accommodates the first head 3411 will also be larger than the width of the portion of the first slot 321 that accommodates the first contraction portion 3412. Thus, when the first head 3411 and the first contraction portion 3412 are placed in the first slot 321, the sidewall of the first slot 321 can effectively prevent the first head 3411 from detaching from the first slot 321, thereby realizing the connection between the elastic block 341 and the side plate 32.

[0137] The elastic block 341 is provided with a first head 3411 and a first contraction part 3412 so as to be inserted into the first slot 321 of the side plate 32 to realize the connection between the elastic block 341 and the side plate 32. Moreover, since the size of the first head 3411 is larger than the size of the first contraction part 3412, when the first head 3411 and the first contraction part 3412 are placed in the first slot 321, the first head 3411 can be effectively prevented from detaching from the first slot 321, so as to achieve good fixation between the elastic block 341 and the side plate 32.

[0138] In some embodiments, adhesive can be applied to the first head 3411, and the first head 3411 can be placed in the first groove 321 to bond the first head 3411 to the side wall of the first groove 321, thereby achieving a good connection between the elastic block 341 and the side plate 32. In some embodiments, when sealant is applied to the first head 3411, the first head 3411 can be sealed to the side wall of the first groove 321, thereby achieving a sealed connection between the elastic block 341 and the side plate 32.

[0139] In some embodiments, the first head 3411 can be pressed into the first slot 321 so that the first head 3411 abuts against the side wall of the first slot 321, thereby sealing the first head 3411 with the side wall of the first slot 321, and thus achieving a sealed connection between the elastic block 341 and the side plate 32.

[0140] In some embodiments, the first head 3411 has an arc-shaped or polygonal cross section along the Z direction perpendicular to the height of the housing 20.

[0141] A major arc is a figure bounded by a circular arc and its corresponding chord. When the arc is a major arc, it is called a major arc. The portion of a circle between any two points is called an arc. The two endpoints of a diameter divide the circle into two arcs, each called a semicircle. An arc larger than a semicircle is called a major arc. An arc smaller than a semicircle is called a minor arc.

[0142] Since the height of the side panel 32 is parallel to the height direction Z of the box body 20, the first head 3411 has an arc-shaped cross section perpendicular to the height direction Z of the box body 20, thus the first head 3411 is a column with an arc-shaped outer surface. The first head 3411 has a polygonal cross section perpendicular to the height direction Z of the box body 20, thus the first head 3411 is a polygonal column.

[0143] The structure of the first head 3411 described above is simple and can be easily selected and manufactured according to needs.

[0144] In some embodiments, please refer to Figures 8 to 10 The end of the elastic block 341 connected to the end plate 33 has a second head 3413 and a second contraction portion 3414. Along the second direction N, the size of the second head 3413 is larger than the size of the second contraction portion 3414. The end plate 33 is provided with a second slot 331 adapted to accommodate the second head 3413 and the second contraction portion 3414.

[0145] The second head 3413 refers to the part of the elastic block 341 near the end plate 33, which is used to connect with the end plate 33.

[0146] The second contraction section 3414 refers to the structure that connects the second head 3413 and the elastic block 341 in the middle.

[0147] The dimensions of the second head 3413 refer to the dimensions of the second head 3413 along the second direction N.

[0148] The width of the second contraction portion 3414 refers to the dimension of the second contraction portion 3414 along the second direction N.

[0149] The second slot 331 refers to the slot structure opened on the side of the corresponding end of the end plate 33. The second slot 331 can extend along the height direction Z of the end plate 33 to facilitate processing and manufacturing. The second head 3413 and the second constriction part 3414 are adapted to be disposed in the second slot 331, so that the second head 3413 and the second constriction part 3414 are connected to the end plate 33 along the entire height of the end plate 33, so that the elastic block 341 is well connected to the end plate 33.

[0150] Since the size of the second head 3413 is larger than the size of the second contraction portion 3414, and the second slot 331 is adapted to accommodate the second head 3413 and the second contraction portion 3414, the width of the portion of the second slot 331 that accommodates the second head 3413 will also be larger than the width of the portion of the second slot 331 that accommodates the second contraction portion 3414. Thus, when the second head 3413 and the second contraction portion 3414 are placed in the second slot 331, the sidewall of the second slot 331 can effectively prevent the second head 3413 from detaching from the second slot 331, thereby realizing the connection between the elastic block 341 and the end plate 33.

[0151] The elastic block 341 is provided with a second head 3413 and a second contraction part 3414 so that it can be inserted into the second slot 331 of the end plate 33 to realize the connection between the elastic block 341 and the end plate 33. Moreover, since the size of the second head 3413 is larger than the size of the second contraction part 3414, when the second head 3413 and the second contraction part 3414 are placed in the second slot 331, the second head 3413 can be effectively prevented from detaching from the second slot 331, so as to achieve good fixation between the elastic block 341 and the end plate 33.

[0152] In some embodiments, adhesive can be applied to the second head 3413, which is then placed in the second slot 331 to bond the second head 3413 to the sidewall of the second slot 331, thereby achieving a good connection between the elastic block 341 and the end plate 33. In some embodiments, when sealant is applied to the second head 3413, the second head 3413 can be sealed to the sidewall of the second slot 331, thereby achieving a sealed connection between the elastic block 341 and the end plate 33.

[0153] In some embodiments, the second head 3413 can be pressed into the second slot 331 so that the second head 3413 abuts against the side wall of the second slot 331, thereby sealing the second head 3413 with the side wall of the second slot 331, and thus achieving a sealed connection between the elastic block 341 and the end plate 33.

[0154] In some embodiments, the second head 3413 has an arc-shaped or polygonal cross section along the Z direction perpendicular to the height of the housing 20.

[0155] Since the height of end plate 33 is parallel to the height direction Z of housing 20, and the cross-section of the second head 3413 along the height direction Z perpendicular to housing 20 is arc-shaped, the second head 3413 is a column with an arc-shaped outer surface. If the cross-section of the second head 3413 along the height direction Z perpendicular to housing 20 is polygonal, the second head 3413 is a polygonal column.

[0156] The structure of the second head 3413 described above is simple and can be easily selected and manufactured according to needs.

[0157] In some embodiments, please refer to Figures 8 to 10 Along the thickness direction of the side plate 32, the width of the middle portion of the elastic block 341 can be set to be greater than the width of the first contraction portion 3412. In some embodiments, along the thickness direction of the side plate 32, the width of the middle portion of the elastic block 341 can be set to be equal to or less than the width of the first contraction portion 3412.

[0158] In some embodiments, please refer to Figures 8 to 10 Along the thickness direction of the side plate 32, the width of the middle portion of the elastic block 341 can be set to be greater than the width of the second contraction portion 3414. In some embodiments, along the thickness direction of the side plate 32, the width of the middle portion of the elastic block 341 can be set to be equal to or less than the width of the second contraction portion 3414.

[0159] In some embodiments, please refer to Figure 11 and Figure 12 The first elastic structure 34 includes an elastic sheet 342.

[0160] Elastic sheet 342 refers to a sheet-like component that has elasticity.

[0161] The first elastic structure 34 uses an elastic sheet 342, which can be easily compressed to reduce the length of the battery module unit 300 so that it can be easily installed into the housing 20.

[0162] In some embodiments, the elastic sheet 342 is bonded to the corresponding side plate 32 and the corresponding end plate 33.

[0163] The elastic sheet 342 is bonded to the corresponding side plate 32 and the corresponding end plate 33, which means that the elastic sheet 342 can be connected to the corresponding side plate 32 and the corresponding end plate 33 by means of sealant, structural adhesive or other adhesives.

[0164] The elastic sheet 342 is bonded to the corresponding side plate 32 and the corresponding end plate 33, making the connection convenient.

[0165] In some embodiments, the elastic sheet 342 is connected to the corresponding side plate 32 and the corresponding end plate 33 by fasteners 39.

[0166] Fastener 39 refers to structural components such as rivets and screws.

[0167] The elastic sheet 342 is connected to the corresponding side plate 32 and the corresponding end plate 33 by fasteners 39, making the connection more secure.

[0168] In some embodiments, the elastic sheet 342 can be bonded to the corresponding side plate 32, and then the fastener 39 can be used to connect the elastic sheet 342 to the corresponding side plate 32.

[0169] In some embodiments, the elastic sheet 342 can be bonded to the corresponding end plate 33, and then the fastener 39 can be used to connect the elastic sheet 342 to the corresponding end plate 33.

[0170] In some embodiments, the elastic sheet 342 includes a rubber sheet or a silicone sheet.

[0171] Rubber sheets refer to sheet-like components made of rubber materials. These materials can include natural rubber, styrene-butadiene rubber, cis-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, fluororubber, polyurethane rubber, and more.

[0172] Silicone blocks refer to sheet-like components made of silicone material.

[0173] Elastic sheet 342 uses rubber or silicone sheets, which are easy to manufacture, low in cost, and convenient to produce.

[0174] In some embodiments, the elastic sheet 342 may further include a metal sheet. A metal sheet refers to a sheet-like component made of a metallic material. The metallic material may be copper, aluminum, iron, or other metals and metal alloys.

[0175] In some embodiments, an elastic sheet 342 may be provided on the side of the side plate 32 closest to the other side plate 32. Alternatively, the elastic sheet 342 may be provided on the side of the side plate 32 away from the other side plate 32.

[0176] In some embodiments, the first elastic structure 34 may include an elastic block 341 and an elastic sheet 342. That is, after the end of the side plate 32 is connected to the corresponding end plate 33 through the elastic block 341, an elastic sheet 342 can be provided to connect the side plate 32 and the corresponding end plate 33. This not only improves the connection strength, but also allows for a better sealing connection.

[0177] In some embodiments, when one end of the side plate 32 is connected to the end plate 33 through the first elastic structure 34, the other end of the side plate 32 can be connected to the corresponding end plate 33 through screws, rivets or other connecting parts; of course, the other end of the side plate 32 can also be welded or bonded to the corresponding end plate 33.

[0178] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 7The battery module unit 300 also includes a reinforcing beam 35 extending along the second direction N, at least one end of the reinforcing beam 35 being connected to the end plate 33 via a second elastic structure 36.

[0179] The reinforcing beam 35 refers to the beam structure connecting the two end plates 33. The reinforcing beam 35 can be made of materials such as plastic or metal to increase the structural strength of the battery module unit 300.

[0180] As an example, the reinforcing beam 35 can be a hollow structure. When the battery cell 311 in the battery module unit 300 adopts immersion temperature regulation, the hollow structure of the reinforcing beam 35 can serve as a flow channel for the temperature regulating liquid.

[0181] As an example, the reinforcing beam 35 can also be used to limit the expansion and deformation of the battery cell 311 so that the battery cell 311 can be properly charged and discharged.

[0182] The second elastic structure 36 refers to a structure that can elastically deform, meaning that it can be compressed when subjected to external force, and stretched when subjected to external force. After the external force leaves the second elastic structure 36, it can automatically return to its original position.

[0183] At least one end of the reinforcing beam 35 is connected to the corresponding end plate 33 via the second elastic structure 36, which means that one end of the reinforcing beam 35 is connected to the corresponding end plate 33 via the second elastic structure 36, or both ends of the side plate 32 are connected to the corresponding end plate 33 via the second elastic structure 36 respectively.

[0184] A reinforcing beam 35 is provided to enhance the structural strength of the battery module unit 300. At least one end of the reinforcing beam 35 is connected to the end plate 33 via a second elastic structure 36, so that when the end plate 33 is pressed, the second elastic structure 36 and the first elastic structure 34 can be compressed together to compress the length of the battery module unit 300, thereby facilitating the placement of the battery cell 311 in the housing 20.

[0185] In some embodiments, battery cells 311 can be provided on both sides of the reinforcing beam 35, that is, multiple battery cells 311 can be arranged on both sides of the reinforcing beam 35. Of course, battery cells 311 can also be provided on one side of the reinforcing beam 35, that is, multiple battery cells 311 can be arranged on one side of the reinforcing beam 35.

[0186] In some embodiments, the reinforcing beam 35 may be one. Of course, the reinforcing beam 35 may also be multiple. When multiple reinforcing beams 35 are used, adjacent reinforcing beams 35 are spaced apart, and battery cells 311 may be arranged between adjacent reinforcing beams 35. "Multiple" refers to two or more.

[0187] In some embodiments, please refer to Figure 3 and Figure 4 Both ends of the reinforcing beam 35 are connected to the corresponding end plates 33 through the second elastic structure 36.

[0188] Each end of the reinforcing beam 35 is connected to a second elastic structure 36. When the end plates 33 are pressed, the pressing force can be quickly transmitted to the adjacent second elastic structure 36 to compress the second elastic structure 36. In addition, the second elastic structure 36 is provided at each end of the reinforcing beam 35, which can increase the overall compression of the battery module unit 300, making it easier to compress the battery module unit 300 and place it in the housing 20.

[0189] In some embodiments, please refer to Figure 7 The reinforcing beam 35 can be connected to the corresponding end plate 33 at only one end via the second elastic structure 36, thereby reducing the number of second elastic structures 36 used, reducing costs, reducing the number of parts, and improving assembly efficiency.

[0190] In some embodiments, the two ends of the second elastic structure 36 are respectively sealed to the corresponding end plate 33 and the reinforcing beam 35.

[0191] The sealing connection between the second elastic structure 36 and the corresponding end plate 33 and the reinforcing beam 35 means that the second elastic structure 36 is connected to the corresponding end plate 33 and the second elastic structure 36 and the end plate 33 are sealed; the second elastic structure 36 is connected to the reinforcing beam 35 and the second elastic structure 36 and the reinforcing beam 35 are sealed.

[0192] The second elastic structure 36 and the reinforcing beam 35 can be bonded together with sealant to achieve a sealed connection. Alternatively, the second elastic structure 36 can be pressed against the reinforcing beam 35 to achieve a sealed connection. As an example, a groove structure can be provided on the reinforcing beam 35, and a portion of the second elastic structure 36 can be squeezed into this groove structure, causing the second elastic structure 36 to press against the side wall of the groove structure, thus achieving a sealed connection between the second elastic structure 36 and the reinforcing beam 35. As an example, rivets, pressure plates, or other structural components can also be used to press a portion of the second elastic structure 36 against the reinforcing beam 35 to achieve a sealed connection.

[0193] The second elastic structure 36 and the corresponding end plate 33 can be bonded together with sealant to achieve a sealed connection. Alternatively, the second elastic structure 36 can be pressed against the corresponding end plate 33 to achieve a sealed connection. As an example, a groove structure can be provided on the end plate 33, and a portion of the second elastic structure 36 can be squeezed into this groove structure, causing the second elastic structure 36 to press against the side wall of the groove structure, thus achieving a sealed connection between the second elastic structure 36 and the corresponding end plate 33. As an example, rivets, pressure plates, or other structural components can also be used to press a portion of the second elastic structure 36 against the corresponding end plate 33 to achieve a sealed connection.

[0194] By sealing the two ends of the second elastic structure 36 to the reinforcing beam 35 and the corresponding end plate 33 respectively, it can provide better isolation and protection for the battery cells 311 on both sides of the reinforcing beam 35. In particular, when the battery cells 311 are immersed in temperature regulation, it can prevent the temperature regulation liquid on both sides of the reinforcing beam 35 from flowing through the reinforcing beam 35 to a certain extent.

[0195] In some embodiments, the second elastic structure 36 may be an elastic block or an elastic sheet. When the second elastic structure 36 is an elastic block, it may be a rubber block or a silicone block. When the second elastic structure 36 is an elastic sheet, it may be a rubber sheet, a silicone sheet, or a metal sheet.

[0196] In some embodiments, the second elastic structure 36 and the first elastic structure 34 may use the same structure to reduce the types of components and lower costs. Of course, the second elastic structure 36 and the first elastic structure 34 may also be configured differently, as long as the second elastic structure 36 can be disposed between the reinforcing beam 35 and the corresponding end plate 33, and connect the corresponding end of the reinforcing beam 35 to the corresponding end plate 33.

[0197] In some embodiments, when the second elastic structure 36 has the same structure as the first elastic structure 34, the adapter structure on the reinforcing beam 35 connected to the second elastic structure 36 is also the same. Similarly, the adapter structure on the end plate 33 connected to the second elastic structure 36 is also the same.

[0198] In some embodiments, please refer to Figures 3 to 5 and Figure 13 An elastic element 37 is provided between two adjacent battery cells 311.

[0199] Elastic component 37 refers to a structural component that has elasticity.

[0200] An elastic element 37 is provided between two adjacent battery cells 311. On the one hand, it can provide expansion space for the normal expansion and deformation of the battery cell 311. On the other hand, when the end plate 33 is pressed, the elastic element 37 can be compressed to compress the length of the battery cell 311 module, so as to facilitate the placement of the battery module unit 300 in the housing 20.

[0201] In some embodiments, please refer to Figure 13 The elastic element 37 is plate-shaped to separate two adjacent battery cells 311.

[0202] Plate-like refers to flat structural components whose thickness is much smaller than their width and length.

[0203] A plate-shaped elastic element 37 is provided between adjacent battery cells 311, which can be used to separate two adjacent battery cells 311.

[0204] Using a plate-shaped elastic element 37 to separate two adjacent battery cells 311, when the battery module unit 300 is placed in the housing 20, the elastic element 37 can better support the adjacent battery cells 311 by being positioned by the frame 23 of the housing 20, thereby restraining the position of the battery cells 311 and fixing the battery cells 311 more stably in the housing 20; in addition, using the plate-shaped elastic element 37 to separate the battery cells 311 can also reduce the mutual influence of heat between the battery cells 311.

[0205] In some embodiments, please refer to Figures 2 to 5 The elastic element 37 is strip-shaped, and the battery cell 311 is provided with the elastic element 37 at the upper part along the height direction Z.

[0206] The height direction Z refers to the height direction of the battery cell 311, and this height direction Z is also the height direction of the casing 20.

[0207] The upper part of the battery cell 311 along the height direction Z is provided with an elastic element 37, which means that the upper part of the adjacent battery cells 311 in terms of height is provided with an elastic element 37.

[0208] Using a strip-shaped elastic element 37, and placing the elastic element 37 at the upper part of the height direction Z of the battery cell 311, can reduce the amount of material used for the elastic element 37, thereby reducing costs and the weight of the battery module unit 300. In addition, when the bottom of the battery cell 311 is bonded and fixed to the bottom of the housing 20, a cavity is formed between the elastic element 37 and the bottom of the housing 20. In some cases, a temperature-regulating liquid can flow through to regulate the temperature of the battery cell 311.

[0209] In some embodiments, the lower part of the battery cell 311 along the height direction Z is provided with an elastic member 37, and a flow channel 38 is formed in the middle of the adjacent battery cells 311 along the height direction Z.

[0210] The lower part of the battery cell 311 along the height direction Z is provided with an elastic element 37, which means that the lower part of the adjacent battery cells 311 is provided with an elastic element 37 in terms of height. Since the upper part of the battery cell 311 along the height direction Z is also provided with an elastic element 37, a cavity is formed between the upper and lower elastic elements 37 of two adjacent battery cells 311. This cavity is used to allow liquid to flow, so as to form a flow channel 38.

[0211] Elastic elements 37 are respectively provided at the upper and lower parts of the battery cell 311 in the height direction Z. When the battery module unit 300 is compressed, the upper and lower parts of the battery cell 311 will be subjected to the elastic force of the elastic elements 37, so that the force on the battery cell 311 in the height direction Z is more balanced, which makes it easier to compress the overall length of the battery module unit 300. Due to the spacing of the elastic elements 37 at the upper and lower parts of the battery cell 311 in the height direction Z, a flow channel 38 can be formed in the middle of adjacent battery cells 311 in the height direction Z. In some cases, temperature-regulating liquid can be circulated to regulate the temperature of the battery cell 311.

[0212] In some embodiments, the elastic element 37 can also be an elastic ring, which is fitted onto the battery cell 311. When multiple battery cells 311 are arranged in a row, the elastic element 37 can be disposed between two adjacent battery cells 311.

[0213] In some embodiments, each elastic element 37 is sealed and bonded to the corresponding battery cell 311.

[0214] By sealing and bonding each elastic element 37 to the corresponding battery cell 311, the elastic element 37 and the battery cell 311 can be better sealed, thereby sealing the upper and lower sides of the flow channel 38. When the temperature regulating liquid flows through the flow channel 38, the leakage of the temperature regulating liquid can be effectively prevented.

[0215] According to some embodiments of this application, this application provides a battery device 200, including a housing 20 and a battery module unit 300, the battery module unit 300 being installed in the housing 20. The battery module unit 300 includes a battery cell assembly 31, two end plates 33, and two side plates 32. The battery cell assembly 31 includes a plurality of battery cells 311 arranged in an array. The two end plates 33 are respectively disposed at opposite ends of the battery cell assembly 31 along a first direction M. The two side plates 32 are respectively disposed on opposite sides of the battery cell assembly 31 along a second direction N, the first direction M being perpendicular to the second direction N. The two side plates 32 and the two end plates 33 form a receiving space for accommodating the battery cell assembly 31, and at least one end of each side plate 32 along the first direction M is connected to the corresponding end plate 33 via a first elastic structure 34. An elastic element 37 is provided between adjacent battery cells 311. The first elastic structure 34 includes an elastic block 341, the two ends of which are respectively connected to the corresponding side plate 32 and the corresponding end plate 33. The elastic block 341, connected to the side plate 32, has a first head 3411 and a first contraction portion 3412. Along the second direction N, the size of the first head 3411 is larger than the size of the first contraction portion 3412. The side plate 32 has a first slot 321 adapted to accommodate the first head 3411 and the first contraction portion 3412. The elastic block 341, connected to the end plate 33, has a second head 3413 and a second contraction portion 3414. Along the second direction N, the size of the second head 3413 is larger than the size of the second contraction portion 3414. The end plate 33 has a second slot 331 adapted to accommodate the second head 3413 and the second contraction portion 3414.

[0216] The elastic block 341 is provided with a first head 3411 and a first contraction portion 3412, and the corresponding end of the side plate 32 is provided with a first slot 321 to accommodate the first head 3411 and the first contraction portion 3412, thereby facilitating the connection of one end of the elastic block 341; the elastic block 341 is provided with a second head 3413 and a second contraction portion 3414, and the corresponding end plate 33 is provided with a second slot 331 to accommodate the second head 3413 and the second contraction portion 3414, thereby facilitating the connection of the other end of the elastic block 341; at least one end of each side plate 32 along the first direction M is open. The elastic block 341 is connected to the end plate 33, and the elastic element 37 is provided between two adjacent battery cells 311. The two end plates 33 are pressed against each other, which can compress and deform each elastic block 341, thereby reducing the length of the battery module unit 300 along the first direction M, so as to facilitate the placement of the battery module unit 300 in the housing 20. After the battery module unit 300 is placed in the housing 20, due to the natural rebound of the elastic block 341 and the elastic element 37, each end plate 33 can abut against the frame 23 of the housing 20, fixing the battery module unit 300 to the housing 20.

[0217] According to some embodiments of this application, this application also provides an electrical device, including a battery device 200 as described in the above embodiments, the battery device 200 being used to store or provide electrical energy.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, It includes a housing and a battery module unit, wherein the battery module unit includes: A battery cell assembly, comprising a plurality of battery cells arranged along a first direction; Two end plates are respectively disposed at opposite ends of the battery cell assembly along the first direction; Two side plates are respectively disposed on opposite sides of the battery cell assembly along the second direction, wherein the first direction is perpendicular to the second direction; The two side plates and the two end plates form a receiving space for accommodating the battery cell assembly, and at least one end of each side plate along the first direction is connected to the corresponding end plate through a first elastic structure.

2. The battery device as claimed in claim 1, characterized in that, Each of the side plates is connected to the corresponding end plate at its opposite ends along the first direction via the first elastic structure.

3. The battery device as claimed in claim 1, characterized in that, The first elastic structure is sealed to the corresponding side plate and the corresponding end plate.

4. The battery device as claimed in claim 1, characterized in that, The first elastic structure includes an elastic block, and the two ends of the elastic block are respectively connected to the corresponding side plate and the corresponding end plate.

5. The battery device as claimed in claim 4, characterized in that, The elastic block is a rubber block or a silicone block.

6. The battery device as claimed in claim 4, characterized in that, The end of the elastic block connected to the side plate has a first head and a first contraction portion. Along the second direction, the size of the first head is larger than the size of the first contraction portion. The side plate is provided with a first slot adapted to accommodate the first head and the first contraction portion.

7. The battery device as claimed in claim 6, characterized in that, The first head has an arc-shaped or polygonal cross section along the direction perpendicular to the height of the box.

8. The battery device as claimed in claim 4, characterized in that, The end of the elastic block connected to the end plate has a second head and a second contraction portion. Along the second direction, the size of the second head is larger than the size of the second contraction portion. The end plate is provided with a second slot adapted to accommodate the second head and the second contraction portion.

9. The battery device as claimed in claim 8, characterized in that, The second head has an arc-shaped or polygonal cross-section along the direction perpendicular to the height of the box.

10. The battery device according to any one of claims 1-9, characterized in that, The first elastic structure includes an elastic sheet.

11. The battery device as claimed in claim 10, characterized in that, The elastic sheet is bonded to the corresponding side plate and the corresponding end plate, or / and the elastic sheet is connected to the corresponding side plate and the corresponding end plate by fasteners.

12. The battery device as claimed in claim 10, characterized in that, The elastic sheet includes a rubber sheet or a silicone sheet.

13. The battery device according to any one of claims 1-9, characterized in that, The battery module unit further includes a reinforcing beam extending along the second direction, at least one end of which is connected to the end plate via a second elastic structure.

14. The battery device as claimed in claim 13, characterized in that, The two ends of the second elastic structure are respectively sealed and connected to the corresponding end plate and the reinforcing beam.

15. The battery device according to any one of claims 1-9, characterized in that, An elastic element is provided between two adjacent battery cells.

16. The battery device as claimed in claim 15, characterized in that, The elastic element is plate-shaped to separate two adjacent battery cells.

17. The battery device as claimed in claim 15, characterized in that, The elastic element is strip-shaped, and the elastic element is provided on the upper part of the battery cell along the height direction.

18. The battery device as claimed in claim 17, characterized in that, The elastic element is provided at the lower part of the battery cell along the height direction, and a flow channel is formed at the middle of the adjacent battery cells along the height direction.

19. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-18, the battery device being used to store or provide electrical energy.

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