Battery device and electric device

Abstract

The utility model discloses a battery device (100) and a power utilization device (1000), the battery device (100) comprises a box body (10) and a plurality of battery monomer modules (210), the box body (10) comprises a bottom plate (111), two edge beams (112) and a mounting beam (113); the plurality of battery monomer modules (210) are arranged between the two edge beams (112), each battery monomer module (210) comprises a plurality of soft package battery monomers (20) and an end plate (25), the end plates (25) are connected to the edge beams (112), and the end plates (25) are further connected to the bottom plate (111). According to the battery device (100), the installation stability of the battery monomer module (210) in the box body (10) is higher, the consistency of the box body (10) and the battery monomer module (210) is better, and especially when the battery device (100) is hung and transferred, the damage of the battery device (100) caused by vibration is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery device technology, and in particular provides a battery device and an electrical device. Background Technology

[0002] Battery devices are widely used in vehicles to provide them with electric power. Moreover, to meet the high power demands of vehicles, battery devices are generally used as the power source for vehicles.

[0003] In related technologies, battery devices include a housing and individual battery modules housed within the housing. During installation, the inconsistency between the housing and the individual battery modules results in a weak overall structural strength of the battery device. Utility Model Content

[0004] One of the objectives of this application is to provide a battery device and an electrical device, which aims to improve the problem of weak overall structural strength of the battery device caused by poor consistency between the battery casing and the battery cell module when the battery device is mounted.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of this application is as follows:

[0006] A first-direction surface provides a battery device, comprising:

[0007] The enclosure includes a base plate, two side beams spaced apart on the base plate, and a mounting beam on the side beams; and,

[0008] Multiple battery cell modules are arranged between two side beams. Each battery cell module includes multiple pouch battery cells arranged in an array and end plates disposed on opposite sides of the multiple pouch battery cells. The end plates are connected to the side beams and are also connected to the base plate.

[0009] The battery cell module includes a buffer pad, and in the third direction, at least one set of two adjacent pouch battery cells are provided with the buffer pad.

[0010] In some embodiments, two side beams are spaced apart along a first direction, an end plate is connected to the side beams along the first direction, and the end plate is connected to the bottom plate along a second direction, the second direction being perpendicular to the first direction.

[0011] By adopting the above technical solution, the connection stability of the end plates within the enclosure is further improved by connecting and reinforcing the end plates from two directions.

[0012] In some embodiments, the battery device includes a first locking attachment and a second locking attachment. The side beam is provided with a first locking hole, and the base plate is provided with a second locking hole. The end plate is provided with a first connecting hole and a second connecting hole. The first locking attachment is locked to the first locking hole and the first connecting hole along the first direction, so that the end plate is locked to the side beam. The second locking attachment is locked to the second connecting hole and the second locking hole along the second direction, so that the end plate is locked to the base plate.

[0013] By adopting the above technical solution, the connection between the end plate and the bottom plate, as well as the connection between the end plate and the side beam, is achieved by using a locking method. That is, the first locking accessory is inserted through the first locking hole and the first connecting hole in the first direction to achieve the connection between the end plate and the side beam, and the second locking accessory is inserted through the second locking hole and the second connecting hole in the second direction to achieve the connection between the end plate and the bottom plate.

[0014] In some embodiments, in the first direction, the orthographic projection of the first connecting hole is separated from the orthographic projection of the mounting beam.

[0015] By adopting the above technical solution, the orthographic projection of the first connecting hole in the first direction is separated from the orthographic projection of the mounting beam, so that the first locking hole on the side beam can also avoid the mounting beam, so as to facilitate the locking connection of the first locking accessory.

[0016] In some embodiments, the mounting beam includes a multi-segment structure, with intervals on the multi-segment structure used to avoid the first connecting hole.

[0017] By adopting the above technical solution, the first connecting hole is avoided by utilizing the intervals of the multi-segment structure in the mounting beam, so that the first locking hole on the side beam also avoids the mounting beam, thereby facilitating the locking connection of the first locking accessory.

[0018] In some embodiments, the mounting beam and the side beam are integrally formed.

[0019] By adopting the above technical solution, the connection strength between the mounting beam and the edge beam is improved by using an integral molding design.

[0020] In some embodiments, the first locking hole is a waist hole; and / or, the second locking hole is a waist hole.

[0021] By adopting the above technical solution, using the first locking hole as a slotted hole and the second locking hole as a slotted hole, the installation accuracy required for the locking connection of the first locking accessory and the second locking accessory is reduced.

[0022] In some embodiments, a first seal is provided between the end plate and the side beam, the first seal surrounding the first locking hole; and / or,

[0023] A second sealing element is provided between the end plate and the bottom plate, and the second sealing element surrounds the second locking hole.

[0024] By adopting the above technical solution, the first sealing element is used to surround the first locking hole to improve the overall sealing performance of the box; and similarly, the second sealing element is used to surround the second locking hole to improve the sealing performance of the box.

[0025] In some embodiments, the base plate has a solid portion, on which the second locking hole is provided.

[0026] By adopting the above technical solution, a second locking hole is opened on the solid part of the base plate to meet the locking connection requirements of the second locking accessory.

[0027] In some embodiments, the base plate has a protrusion, and the protrusion has a second locking hole.

[0028] By adopting the above technical solution, a second locking hole is provided on the protrusion of the base plate to meet the locking connection requirements of the second locking accessory.

[0029] In some embodiments, the base plate has a protrusion, the protrusion has an insert, and the insert has a second locking hole.

[0030] By adopting the above technical solution, an insert is provided in the protrusion of the base plate, and a second locking hole is opened on the insert to meet the locking connection requirements of the second lock accessory.

[0031] In some embodiments, the end plate between two adjacent battery cell modules includes a first sub-end plate and a second sub-end plate that are stacked in an interleaved manner;

[0032] Both the first sub-end plate and the second sub-end plate are provided with the first connecting hole; both the first sub-end plate and the second sub-end plate are provided with the second connecting hole.

[0033] By adopting the above technical solution, the end plate is set in two parts, that is, it includes a first sub-end plate and a second sub-end plate. Furthermore, a first connecting hole and a second connecting hole are provided on both the first sub-end plate and the second sub-end plate to meet the corresponding locking connection requirements.

[0034] In some embodiments, the first connection hole on the second sub-end plate is located at one end away from the mounting beam.

[0035] By adopting the above technical solution, the first connecting hole on the second sub-end plate is positioned away from the mounting beam so that the first locking accessory can avoid the mounting beam when it is locked and connected.

[0036] In some embodiments, the dimensions of the first sub-end plate and the second sub-end plate are the same.

[0037] By adopting the above technical solution, the first sub-end plate and the second sub-end plate are standard parts with the same size and specifications. That is, the assembly requirements can be solved by producing the same sub-end plate. In addition, the two connecting holes are moved away from the mounting beam at the same time, so as to meet the requirement that each locking accessory avoids the mounting beam, so that the locking accessory can be locked and connected.

[0038] In some embodiments, the surface of the base plate is coated with an adhesive, and the base plate is bonded to each of the pouch cell via the adhesive.

[0039] By adopting the above technical solution, the gap between the base plate and each soft-pack battery cell is filled with colloid to improve the installation stability of each soft-pack battery cell in the box.

[0040] In some embodiments, the battery cell module includes a connecting strip, which is disposed at the top end of each of the pouch battery cells in a third-party direction, and the opposite ends of the connecting strip are respectively connected to the corresponding end plates.

[0041] By adopting the above technical solution, connecting strips are used to connect each soft-pack battery cell, thereby further improving the connection stability of each soft-pack battery cell.

[0042] In some embodiments, the battery cell module includes a pressure strip that extends in a first direction and presses against each of the pouch battery cells in a second direction.

[0043] By adopting the above technical solution, the pressure strip is used to further fix each soft-pack battery cell, thereby improving the connection stability of each soft-pack battery cell.

[0044] In some embodiments, a plurality of battery cell modules are arranged along the first direction to form a multi-column battery cell module column, the multi-column battery cell module columns are arranged at intervals along a third direction, the base plate is provided with a separator, the separator is located between two adjacent battery cell module columns, and the third direction is perpendicular to the first direction.

[0045] By adopting the above technical solution, the battery cell module rows are separated and limited by the separators, so as to further improve the connection stability of each battery cell module in the box.

[0046] In some embodiments, the end plate is provided with an overlap portion that abuts against the separator.

[0047] By adopting the above technical solution, the end plate forms a connection with the separator through the overlapping part, thereby increasing the connection points between each battery cell module and the box.

[0048] In some embodiments, the overlap abuts against the top surface of the separator opposite to the base plate, and the battery device includes a third locking attachment that is locked to the overlap and the separator in a second direction.

[0049] By adopting the above technical solution, the third locking accessory is used to connect the overlapping part and the separator, further improving the installation stability of each battery cell module in the box.

[0050] In some embodiments, along the first direction, the overlapping portions on the end plates of two adjacent battery cell modules are locked to the separator by the third locking attachment.

[0051] By adopting the above technical solution, two adjacent battery cell modules can be connected to the separator, thereby improving the connection stability of the two battery cell modules within the housing.

[0052] In some embodiments, the separator includes a central longitudinal beam integrally formed with at least a portion of the base plate.

[0053] By adopting the above technical solution, at least part of the intermediate longitudinal beam and the bottom plate are integrally formed to improve the connection stability between the intermediate longitudinal beam and the bottom plate.

[0054] In some embodiments, the base plate includes a plurality of sub-plates, wherein some of the sub-plates are integrally formed with the intermediate longitudinal beam, and the remaining sub-plates are welded together.

[0055] By adopting the above technical solution, the base plate is divided into multiple sub-plates. According to actual usage requirements, some of the sub-plates are connected to the intermediate longitudinal beam, while the remaining sub-plates are connected by welding.

[0056] Secondly, this application also provides an electrical device, including the battery device described above, which is used to store or provide electrical energy.

[0057] The beneficial effects of the battery device provided in this application are as follows: The battery device of this application has a mounting beam on the side beam, and end plates are provided on the opposite sides of each soft-pack battery cell, connecting the end plates to the side beam and the bottom plate. In this way, the installation stability of the battery cell module in the box is higher, and the consistency between the box and the battery cell module is better, especially when the battery device is mounted and transferred, so as to reduce the damage to the battery device caused by vibration.

[0058] The beneficial effects of the second aspect can be referenced from the beneficial effects of the first aspect, and will not be repeated here. Attached Figure Description

[0059] 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.

[0060] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0061] Figure 2 An exploded view of the battery device provided in the embodiments of this application;

[0062] Figure 3 This is a schematic diagram of the structure of a pouch cell provided in the embodiments of this application.

[0063] Figure 4 Another exploded view of the battery device provided in the embodiments of this application;

[0064] Figure 5 for Figure 4 Enlarged view of point A in the image;

[0065] Figure 6 for Figure 4 Enlarged view of point B in the image;

[0066] Figure 7 for Figure 4 Enlarged view of point C in the image;

[0067] Figure 8 This is a left view of a battery cell module provided in an embodiment of this application;

[0068] Figure 9 for Figure 8 Enlarged view of point D in the image;

[0069] Figure 10 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0070] Figure 11 This is a schematic diagram of the structure of the battery cell module and the base plate of the battery device provided in the embodiments of this application;

[0071] Figure 12 Another structural schematic diagram of the battery cell module and base plate of the battery device provided in the embodiments of this application;

[0072] Figure 13 A cross-sectional view of the base plate and end plate of the battery device provided in the embodiments of this application;

[0073] Figure 14Another cross-sectional view of the base plate and end plate of the battery device provided in the embodiments of this application;

[0074] Figure 15 Another cross-sectional view of the base plate and end plate of the battery device provided in the embodiments of this application.

[0075] Explanation of reference numerals in the attached figures:

[0076] 1000, vehicles;

[0077] 100. Battery assembly; 200. Controller; 300. Motor;

[0078] 10. Box body; 11. First box body; 111. Bottom plate; 111a. Second locking hole; 112. Side beam; 112a. First locking hole; 113. Mounting beam; 114. Divider; 12. Second box body; 1111. Protrusion; 1112. Insert;

[0079] 20. Soft-pack battery cell; 24. Pouch-shaped casing; 25. End plate; 251. First connecting hole; 252. Second connecting hole; 25a. First sub-end plate; 25a1. First main body; 25a2. First protrusion; 25b. Second sub-end plate; 25b1. Second main body; 25b2. Second protrusion; 25c. Overlapping part;

[0080] 31. First lock accessory; 32. Second lock accessory; 33. Third lock accessory;

[0081] 30. Connecting strip; 40. Pressure strip;

[0082] 210; Battery cell module;

[0083] X, first direction; Z, second direction; Y, third direction. Detailed Implementation

[0084] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0085] 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.

[0086] 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. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0087] 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.

[0088] In the description of the embodiments 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, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0089] 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).

[0090] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0091] 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.

[0092] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in industrial equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0093] The battery pack consists of a housing and individual battery modules. The housing houses and protects the individual battery modules. However, during installation, the inconsistency between the housing and the individual battery modules is poor, resulting in a weak overall structural strength of the battery pack. Therefore, it is urgent to address the problem of weak overall structural strength of the battery pack caused by poor installation consistency between the housing and the individual battery modules.

[0094] In view of this, this application provides a battery device with a mounting beam on the side beam and end plates on opposite sides of each pouch battery cell, connecting the end plates to the side beam and the bottom plate. This results in higher installation stability of the battery cell module within the housing and better consistency between the housing and the battery cell module, especially reducing damage to the battery device caused by vibration during mounting and transfer.

[0095] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0096] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0097] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 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 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0098] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0099] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more pouch cell assemblies for providing voltage and capacity. The pouch cell assembly may include multiple pouch cell 20s, which are connected in series, parallel, or mixed connection via a busbar.

[0100] In some embodiments, the pouch cell assembly is typically formed by arranging a plurality of pouch cells 20.

[0101] As an example, the pouch battery cell assembly can be a battery cell module 210, which is formed by arranging and fixing multiple pouch battery cells 20 into an independent module. As an example, the battery cell module 210 can be formed by binding multiple pouch battery cells 20 together with cable ties, or the battery cell module 210 can be formed by setting end plates at both ends of multiple pouch battery cells 20 and binding and fixing them together with cable ties.

[0102] In some embodiments, the battery device may be a battery pack, which includes a housing 10 and one or more pouch cell assemblies, the pouch cell assemblies being housed within the housing 10.

[0103] As an example, the pouch battery cell assembly can be a battery cell module 210, which can be housed in the housing 10 by fixing the battery cell module 210 in the housing 10.

[0104] As an example, the pouch battery cell assembly can also be housed in the housing 10 by directly fixing multiple pouch battery cells 20 to the housing 10.

[0105] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 to house the individual pouch battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The second housing 12 may be a top cover or a bottom plate.

[0106] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to accommodate the pouch battery cell assembly.

[0107] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0108] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use soft-pack battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0109] In this embodiment, the pouch battery cell 20 can be a secondary battery. A secondary battery refers to a pouch battery cell 20 that can be recharged to activate the active materials and continue to be used after the pouch battery cell has been discharged.

[0110] The soft-pack battery cell 20 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.

[0111] Please refer to Figure 5 This application provides a battery device 100, including a housing 10 and a plurality of battery cell modules 210.

[0112] The box body 10 includes a base plate 111, two side beams 112 spaced apart on the base plate 111, and a mounting beam 113 mounted on the side beams 112; and,

[0113] Multiple battery cell modules 210 are placed between two side beams 112. Each battery cell module 210 includes multiple pouch battery cells 20 arranged in a row and end plates 25 disposed on opposite sides of the multiple pouch battery cells 20. The end plates 25 are connected to the side beams 112 and to the bottom plate 111.

[0114] Understandably, the pouch cell 20 refers to the smallest unit that makes up the battery device 100.

[0115] A pouch battery cell refers to a pouch battery cell 20 that uses a flexible packaging film (such as aluminum-plastic film) as its pouch-shaped casing 24, such as... Figure 4 As shown. Compared to the metal-structured pouch battery cell 20, the pouch battery cell 20 has the advantages of lighter weight and more flexible external shape. The pouch-shaped housing 24 of the pouch battery cell 20 forms a receiving cavity through encapsulation. The interior of the pouch-shaped housing 24 is used to house the electrode assembly and electrolyte. The electrode assembly has tabs on one or both sides, which are used to lead out the current generated by the electrode assembly. A part of the tabs extends out of the pouch-shaped housing 24 through the sealing edge formed by the encapsulation and is electrically connected to the external circuit.

[0116] The housing 10 includes a base plate 111, side beams 112, and mounting beams 113. The base plate 111 is used to support each battery cell module 210, the side beams 112 are used to enclose each battery cell module 210, and the mounting beams 113 are used to mount the battery device 100 during the transfer process.

[0117] Here, the base plate 111 can be a single plate or formed by welding and splicing multiple sub-plates. The side beam 112 and the base plate 111 enclose a space to accommodate the load. The mounting beam 113 is set on the side beam 112 and protrudes in a direction away from the side beam 112. At the same time, the mounting beam 113 is provided with mounting connection positions required for transfer.

[0118] End plates 25 are plate-shaped structures used to further limit the position of each pouch battery cell 20. Typically, there are two end plates 25, which are respectively set at opposite ends of the battery cell module 210 to clamp and fix the battery cell module 210. In order to further improve the connection stability of each battery cell module 210 within the housing 10, the end plates 25 are connected to the bottom plate 111 and the side beam 112 respectively.

[0119] For example, the battery cell module 210 is located between two side beams 112. The extension direction of the end plate 25 is perpendicular to the extension direction of the side beams 112. Therefore, after the end plate 25 is connected to the bottom plate 111 and the side beams 112, the end plate 25, the bottom plate 111 and the side beams 112 enclose each other to form a frame structure to limit and fix the battery cell module 210.

[0120] Here, depending on the length specification of the end plate 25, it can be connected to one of the side beams 112. That is, one end of the end plate 25 can be connected to one of the side beams 112, or the opposite ends of the end plate 25 can be connected to the corresponding side beams 112.

[0121] Furthermore, the connection methods between the end plate 25 and the base plate 111 include, but are not limited to, welding, screw connection, riveting, and combinations of these connection methods. Similarly, the connection methods between the end plate 25 and the side beam 112 include, but are not limited to, welding, threaded connection, riveting, and combinations of these connection methods.

[0122] The battery device 100 of this application has a mounting beam 113 on the side beam 112, and end plates 25 are provided on opposite sides of each soft-pack battery cell 20. The end plates 25 are connected to the side beam 112 and the bottom plate 111. In this way, the installation stability of the battery cell module 210 in the housing 10 is higher, and the consistency between the housing 10 and the battery cell module 210 is better, especially when the battery device is mounted and transferred, so as to reduce the damage to the battery device caused by vibration.

[0123] Please refer to Figures 5 to 8 , Figure 12 In some embodiments, two side beams 112 are spaced apart along a first direction X, an end plate 25 is connected to the side beams 112 along the first direction X, and the end plate 25 is connected to the bottom plate 111 along a second direction Z, the second direction Z being perpendicular to the first direction X.

[0124] Understandably, the first direction X is the width direction of the battery device 100, that is, the first direction X is also the width direction of the base plate 111; the second direction Z is the height direction of the battery device 100, that is, the second direction Z is also the height direction of the base plate 111; and the third direction is the length direction of the battery device 100, that is, the third direction is also the length direction of the base plate 111.

[0125] Here, the extension direction of the end plate 25 can be the first direction X, that is, the extension direction of the end plate 25 is perpendicular to the extension direction of the side beam 112. Then, the end of the end plate 25 is connected to the side beam 112. For example, the end of the end plate 25 can be connected to the side beam 112 by fasteners such as screws and pins. Specifically, the fasteners such as screws and pins are sequentially inserted into the ends of the side beam 112 and the end plate 25 along the first direction X to achieve the connection between the two.

[0126] Meanwhile, the side of the end plate 25 is connected to the bottom plate 111. The side of the end plate 25 is connected to the end face structure. For example, the side of the end plate 25 can be connected to the side beam 112 by fasteners such as screws and pins. Specifically, fasteners such as screws and pins are sequentially inserted into the side of the bottom plate 111 and the end plate 25 along the second direction Z to achieve the connection between the two.

[0127] In this way, by connecting and reinforcing the end plate 25 from two directions, the connection stability of the end plate 25 within the housing 10 is further improved.

[0128] Of course, in other embodiments, such as Figure 13 As shown, the extension direction of the end plate 25 can also be parallel to the extension direction of the side beam 112. In this case, the side beam 112 and the side of the end plate 25 can be connected by fasteners along the first direction X. Similarly, the bottom plate 111 and the side of the end plate 25 can also be connected by fasteners along the second direction Z.

[0129] Please refer to Figures 5 to 8 In some embodiments, the battery device 100 includes a first locking attachment 31 and a second locking attachment 32. The side beam 112 is provided with a first locking hole 112a, and the bottom plate 111 is provided with a second locking hole 111a. The end plate 25 is provided with a first connecting hole 251 and a second connecting hole 252. The first locking attachment 31 is locked to the first locking hole 112a and the first connecting hole 251 along a first direction X, so that the end plate 25 is locked to the side beam 112. The second locking attachment 32 is locked to the second connecting hole 252 and the second locking hole 111a along a second direction Z, so that the end plate 25 is locked to the bottom plate 111.

[0130] Understandably, the lock attachments can be connecting parts such as screws, pins and rivets that are connected by a locking method. Furthermore, the structural forms of the first lock attachment 31 and the second lock attachment 32 can be the same or different. For example, the first lock attachment 31 can be a screw and the second lock attachment 32 can also be a screw, or the first lock attachment 31 can be a screw and the second lock attachment 32 can be a rivet.

[0131] The first locking hole 112a on the side beam 112 should be a through hole that passes through the side beam 112. Similarly, the second locking hole 111a on the bottom plate 111 should also be a through hole that passes through the bottom plate 111. Then, the corresponding locking accessories are inserted through the corresponding locking holes to connect with the connecting holes on the end plate 25.

[0132] Thus, the end plate 25 is connected to the bottom plate 111 and the side beam 112 by means of locking. That is, the first locking attachment 31 passes through the first locking hole 112a and the first connecting hole 251 along the first direction X to connect the end plate 25 to the side beam 112, and the second locking attachment 32 passes through the second locking hole 111a and the second connecting hole 252 along the second direction Z to connect the end plate 25 to the bottom plate 111.

[0133] In some embodiments, in the first direction X, the orthographic projection of the first connecting hole 251 is separated from the orthographic projection of the mounting beam 113.

[0134] Understandably, since the mounting beam 113 is located on the side of the side beam 112 away from the end plate 25, it occupies a portion of the outer surface of the side beam 112. Therefore, in order for the first locking attachment 31 to be locked and connected to the side beam 112 and the end plate 25, the position of the first connecting hole 251 on the end plate 25 should avoid the mounting beam 113. Similarly, the position of the first locking hole 112a should also avoid the mounting beam 113. Thus, in the first direction X, the orthographic projection of the first connecting hole 251 and the orthographic projection of the mounting beam 113 are in a non-overlapping phase separation state, that is, their orthographic projections are misaligned in the first direction X.

[0135] Thus, by utilizing the separation of the orthographic projection of the first connecting hole 251 in the first direction X from the orthographic projection of the mounting beam 113, the first locking hole 112a on the side beam 112 can also avoid the mounting beam 113, so that the first locking attachment 31 can be locked and connected.

[0136] In some embodiments, the mounting beam 113 includes a multi-segment structure, with intervals on the multi-segment structure used to avoid the first connecting hole 251.

[0137] Understandably and similarly, since the mounting beam 113 is located on the side of the side beam 112 away from the end plate 25, the mounting beam 113 should occupy a part of the outer surface of the side beam 112. Therefore, in order for the first locking accessory 31 to be locked and connected to the side beam 112 and the end plate 25, the position of the first connecting hole 251 on the end plate 25 should avoid the mounting beam 113. At this time, in the first direction X, the orthographic projection of the first connecting hole 251 is located at the interval of the multi-segment structure.

[0138] Here, the multi-segment structure of the mounting beam 113 refers to the fact that the mounting beam 113 itself is a discontinuous structure, including at least two or more independent sub-sections that are not connected. Thus, when performing the locking connection, the first locking attachment 31 passes through the first locking hole 112a and the first connecting hole 251 from the gap between the two sub-sections to complete the locking connection between the end plate 25 and the side beam 112.

[0139] In this way, by utilizing the intervals of the multi-segment structure in the mounting beam 113 to avoid the first connecting hole 251, the first locking hole 112a on the side beam 112 also avoids the mounting beam 113, thereby facilitating the locking connection of the first locking attachment 31.

[0140] In some embodiments, the mounting beam 113 and the side beam 112 are integrally formed.

[0141] Understandably, the mounting beam 113 can be formed together with the side beam 112 by die casting, casting or other methods. That is, the two can be made of the same material, thus having a better bond.

[0142] Thus, by using an integral molding design for the mounting beam 113 and the side beam 112, the connection strength between the mounting beam 113 and the side beam 112 is improved.

[0143] In some embodiments, the first locking hole 112a is a waist hole; and / or, the second locking hole 111a is a waist hole.

[0144] Understandably, since the installation position of the battery cell module 210 in the housing 10 is prone to error accumulation, misalignment is likely to occur when the connection hole and the locking hole are set opposite each other. In order to improve this problem, the first locking hole 112a is set as a waist hole, or the second locking hole 111a is set as a waist hole, or both locking holes are set as waist holes. Furthermore, the extension direction of each waist hole should be the same as the stacking direction of each battery cell module 210.

[0145] Thus, by using the first locking hole 112a as a slotted hole and the second locking hole 111a as a slotted hole, the installation accuracy required for the locking connection of the first locking accessory 31 and the second locking accessory 32 is reduced.

[0146] In some embodiments, a first seal (not shown) is provided between the end plate 25 and the side beam 112, the first seal surrounding the first locking hole 112a; and / or,

[0147] A second sealing element (not shown in the figure) is provided between the end plate 25 and the bottom plate 111, and the second sealing element surrounds the second locking hole 111a.

[0148] Understandably, making holes in the base plate 111 and the side beam 112 will affect the sealing performance of the enclosure 10. Therefore, it is necessary to add sealing elements to improve the overall sealing performance of the enclosure 10.

[0149] For example, a first sealing element can be provided between the end plate 25 and the side beam 112. The first sealing element can be a sealing ring, a sealing gasket, or a sealant, etc., to enclose the first locking hole 112a. Alternatively, a second sealing element can be provided between the end plate 25 and the bottom plate 111. The second sealing element can be a sealing ring, a sealing gasket, or a sealant, and similarly, to enclose the second locking hole 111a. Alternatively, a first sealing element can be provided between the end plate 25 and the side beam 112, and a second sealing element can be provided between the end plate 25 and the bottom plate 111, thereby enclosing both the first locking hole 112a and the second locking hole 111a.

[0150] Thus, the first sealing element is used to surround the first locking hole 112a to improve the overall sealing performance of the housing 10; and similarly, the second sealing element is used to surround the second locking hole 111a to improve the sealing performance of the housing 10.

[0151] In some embodiments, the base plate 111 has a solid portion, on which a second locking hole 111a is provided.

[0152] Understandably, the solid portion is a part of the base plate 111, and the solid portion is connected to the other parts of the base plate 111 to form the base plate 111 together. Here, the end face of the solid portion is consistent with the end face of the other parts of the base plate 111, that is, the surface of the side of the end plate 25 can abut against the end face of the solid portion, so the second locking hole 111a is directly formed on the base plate 111.

[0153] Thus, a second locking hole 111a is made in the solid part of the base plate 111 to meet the locking connection requirements of the second lock attachment 32.

[0154] Please refer to Figure 14 In some embodiments, the base plate 111 is provided with a protrusion 1111, and the protrusion 1111 is provided with a second locking hole 111a.

[0155] Understandably, the protrusion 1111 is a structural part that protrudes from the surface of the base plate 111. That is, the protrusion 1111 is an extension of the base plate 111 toward the end plate 25. Similarly, in order to ensure the flatness of the connection between the end plate 25 and the base plate 111, the end plate 25 is also provided with a recess that matches the protrusion 1111. In this way, the end plate 25 and the base plate 111 can be quickly positioned through the convex and concave structures.

[0156] Furthermore, the protrusion 1111 can also enhance the structural strength between the second lock attachment 32 and the base plate 111, which is especially suitable for scenarios where the base plate 111 itself is relatively thin.

[0157] Thus, a second locking hole 111a is provided on the protrusion 1111 of the base plate 111 to meet the locking connection requirements of the second locking accessory 32.

[0158] Please refer to Figure 15 In some embodiments, the base plate 111 is provided with a protrusion 1111, the protrusion 1111 is provided with an insert 1112, and the insert 1112 is provided with a second locking hole 111a.

[0159] Understandably, the protrusion 1111 is a structural part that protrudes from the surface of the base plate 111. That is, the protrusion 1111 is an extension of the base plate 111 toward the end plate 25. Similarly, in order to ensure the flatness of the connection between the end plate 25 and the base plate 111, the end plate 25 is also provided with a recess that matches the protrusion 1111. In this way, the end plate 25 and the base plate 111 can be quickly positioned through the convex and concave structures.

[0160] Insert 1112 is a component movably connected to the protrusion, meaning that insert 1112 can be removed from the protrusion. When the battery device is subjected to external impact, the battery cell module 210 and the base plate 111 are prone to relative movement, which causes the second locking attachment 32 to cause movement impact on the base plate 111. Therefore, by setting the second locking hole 111a at insert 1112, the service life of the base plate 111 can be extended by replacing insert 1112.

[0161] Thus, an insert 1112 is provided in the protrusion 1111 of the base plate 111, and a second locking hole 111a is formed on the insert 1112 to meet the locking connection requirements of the second lock attachment 32.

[0162] Please refer to Figure 9 and Figure 10 In some embodiments, the end plate 25 between two adjacent battery cell modules 210 includes a first sub-end plate 25a and a second sub-end plate 25b that are stacked in an interleaved manner.

[0163] Both the first sub-end plate 25a and the second sub-end plate 25b are provided with a first connecting hole 251; both the first sub-end plate 25a and the second sub-end plate 25b are provided with a second connecting hole 252.

[0164] Understandably, when two adjacent battery cell modules 210 are fixed in a limited position, each of the two end plates 25 of the two battery cell modules 210 needs an end plate 25 to be adapted to it. Therefore, both end plates 25 need to be connected to the base plate 111. This requires two sets of mounting positions to be opened on the base plate 111, which weakens the strength of the base plate 111 to a certain extent.

[0165] Therefore, to avoid creating an additional set of mounting positions on the base plate 111, i.e., an additional set of second locking holes 111a, the end plates 25 at this location are staggered. That is, the first sub-end plate 25a and the second sub-end plate 25b have overlapping portions in the second direction Z. For example, as... Figure 10 As shown, the first sub-end plate 25a includes a first main body portion 25a1 and a first protruding portion 25a2 protruding from the first main body portion 25a1. Similarly, the second sub-end plate 25b includes a second main body portion 25b1 and a second protruding portion 25b2 protruding from the second main body portion 25b1. In the second direction Z, the first protruding portion 25a2 and the second protruding portion 25b2 intersect, that is, in the second direction Z, the orthographic projection of the first protruding portion 25a2 and the orthographic projection of the second protruding portion 25b2 coincide. At this time, the second connecting hole 252 is provided on the first protruding portion 25a2 and the second protruding portion 25b2 to satisfy the second locking accessory 32 passing through the two sub-end plates 25 along the second direction Z. Similarly, the first connecting hole 251 can also be provided on the first protruding portion 25a2 and the second protruding portion 25b2. Of course, the first connecting hole 251 can also be provided on the first main body portion 25a1 and the second main body portion 25b1.

[0166] Here, the number of first protrusions 25a2 can be one or more, and the number of second protrusions 25b2 can also be one or more. When the number of first protrusions 25a2 is multiple and the number of second protrusions 25b2 is multiple, then each first protrusion 25a2 is spaced apart along the second direction Z. Similarly, the second protrusions 25b2 are also spaced apart along the second direction Z, thereby satisfying that each first protrusion 25a2 and each second protrusion 25b2 are staggered and stacked.

[0167] Thus, the end plate 25 is configured in two parts, namely, it includes a first sub-end plate 25a and a second sub-end plate 25b. A first connecting hole 251 and a second connecting hole 252 are provided on both the first sub-end plate 25a and the second sub-end plate 25b to meet the corresponding locking connection requirements.

[0168] Please refer to Figure 10 In some embodiments, the first connection hole 251 on the second sub-end plate 25b is located at one end away from the mounting beam 113.

[0169] Understandably, since the second sub-end plate 25b and the first sub-end plate 25a are stacked in an interlaced manner, setting the first connecting hole 251 away from the mounting beam 113 is beneficial for the first locking accessory 31 to avoid collision with the mounting beam 113.

[0170] For example, as shown in the figure, the second extension 25b2 of the second sub-end plate 25b is located below the first extension 25a2 of the first sub-end plate 25a. That is, the second extension 25b2 of the second sub-end plate 25b is closer to the mounting beam 113. The first connecting hole 251 is opened on the second extension 25b2. Therefore, the first connecting hole 251 needs to be far away from the mounting beam 113 so that the first locking attachment 31 can avoid the mounting beam 113, thereby realizing the locking connection of the first locking attachment 31 to the side beam 112 and the end plate 25.

[0171] Thus, the first connecting hole 251 on the second sub-end plate 25b is positioned away from the mounting beam 113 so that the first locking attachment 31 can avoid the mounting beam 113 when it is locked and connected.

[0172] In some embodiments, the dimensions of the first sub-end plate 25a and the second sub-end plate 25b are the same, and the first sub-end plate 25a and the second sub-end plate 25b are centrally symmetrical about the overlapping position, and the first connecting hole 251 of the first sub-end plate 25a and the first connecting hole 251 of the second sub-end plate 25b are close to each other in the second direction Z.

[0173] Understandably, the fact that the first sub-end plate 25a and the second sub-end plate 25b have the same dimensions means that they are essentially the same component, differing only in their placement. The fact that the first sub-end plate 25a and the second sub-end plate 25b are centrally symmetrical about their overlapping positions means that the two sub-end plates 25 are complementary in their placement orientation; that is, when one sub-end plate 25 rotates 180 degrees around its center point, it can be positioned where the other sub-end plate 25 is located.

[0174] For example, the first sub-end plate 25a includes a first main body 25a1 and a first protrusion 25a2 protruding from the first main body 25a1. Similarly, the second sub-end plate 25b includes a second main body 25b1 and a second protrusion 25b2 protruding from the second main body 25b1. In the second direction Z, the second protrusion 25b2 is placed on the bottom plate 111, and the first protrusion 25a2 is stacked on the second protrusion 25b2. That is, in the second direction Z, the orthographic projection of the first protrusion 25a2 and the orthographic projection of the second protrusion 25b2 coincide. At this time, both the first protrusion 25a2 and the second protrusion 25b2 are provided with first connecting holes 251, and the first connecting holes 251 at the two locations are close to each other. That is, in the second direction Z, both first connecting holes 251 are far away from the position of the mounting beam 113 relative to the side beam 112.

[0175] Thus, the first sub-end plate 25a and the second sub-end plate 25b are standard parts with the same size and specifications. That is, producing the same sub-end plate 25 can solve the assembly requirements. Also, the two connecting holes are simultaneously moved away from the mounting beam 113, thereby ensuring that each locking accessory avoids the mounting beam 113 so that the locking accessories can be locked and connected.

[0176] In some embodiments, the surface of the base plate 111 is coated with an adhesive (not shown), and the base plate 111 is bonded to each pouch cell 20 by the adhesive.

[0177] Understandably, colloids are structural components that have a certain degree of fluidity or are fluid in the early stages of use but become non-fluid in the later stages. Colloids can effectively fill the gaps between the base plate 111 and each soft-pack battery cell 20. In particular, when the base plate 111 also has a heat exchange function, colloids can further improve the heat exchange efficiency between the two.

[0178] In this way, the gap between the base plate 111 and each soft-pack battery cell 20 is filled with colloid to improve the installation stability of each soft-pack battery cell 20 in the housing 10.

[0179] In some embodiments, the battery cell module 210 includes a buffer pad (not shown), and in the third direction, at least one set of two adjacent pouch battery cells 20 are provided with a buffer pad.

[0180] Understandably, the third direction refers to the stacking direction of each pouch cell 20. The buffer pad is a structural component with good deformability. For example, the buffer pad can be a rubber pad, silicone, etc. The buffer pad is used to relieve the squeezing caused by the expansion force between two adjacent pouch cells 20.

[0181] For example, there can be multiple buffer pads, and one buffer pad can be set between any two adjacent pouch battery cells 20; or, one or more groups of buffer pads can be set between two adjacent pouch battery cells 20.

[0182] In this way, the expansion and compression forces between the individual soft-pack battery cells 20 are buffered by the buffer pad.

[0183] Please refer to Figure 11 and Figure 12 In some embodiments, the battery cell module 210 includes a connecting strip 30. In the third direction Y, the connecting strip 30 is disposed at the top end of each pouch battery cell 20, and the opposite ends of the connecting strip 30 are respectively connected to the corresponding end plate 25.

[0184] Understandably, the connecting strip 30 is a structural component with small deformation and a certain rigidity. At the same time, the thickness of the connecting strip 30 should be relatively thin. For example, the connecting strip 30 can be a steel strip, an aluminum alloy strip, or a magnesium alloy strip.

[0185] The top end of the soft-pack battery cell 20 refers to the end of the soft-pack battery cell 20 away from the base plate 111. By setting the connecting strip 30 on the top end of the soft-pack battery cell 20 and connecting the opposite ends to the corresponding end plates 25, the connection stability of the current battery cell module 210 is improved.

[0186] For example, there are multiple connecting straps 30, and each connecting strap 30 is connected to the corresponding end plate 25 by screws, pins or rivets.

[0187] In this way, the connecting strap 30 is used to connect each pouch battery cell 20, so as to further improve the connection stability of each pouch battery cell 20.

[0188] Please refer to Figure 12 In some embodiments, the battery cell module 210 includes a pressure strip 40, which extends along a third direction Y and is pressed onto each pouch battery cell 20 in a second direction Z.

[0189] Understandably, the pressure strip 40 refers to a structural component with relatively small deformation and a certain rigidity, and the pressure strip 40 may be made of high-strength plastic.

[0190] In this way, the pressure strip 40 is used to further fix each soft-pack battery cell 20, thereby improving the connection stability of each soft-pack battery cell 20.

[0191] Please refer to Figure 11 In some embodiments, multiple battery cell modules 210 are arranged along the first direction X to form multiple rows of battery cell modules. The multiple rows of battery cell modules are arranged at intervals along the third direction Y. A separator 114 is provided on the base plate 111. The separator 114 is located between two adjacent battery cell modules and is perpendicular to the third direction Y and the first direction X.

[0192] Understandably, the separator 114 is a structural component used to separate two adjacent battery cell module rows. Here, the separator 114 can be integrally formed with the base plate 111, or it can be connected to the base plate 111 by welding, threaded connection or other connection methods.

[0193] When two battery cell modules 210 are arranged on the base plate 111 along the first direction X, the end plate 25 of the battery cell module 210 is suspended on the side away from the side beam 112, resulting in relatively poor connection stability of the battery cell module 210 on the base plate 111. Therefore, a separator 114 is provided to increase the connection position between the end plate 25 of the battery cell module 210 and the base plate 111 on the side away from the side beam 112.

[0194] In this way, the separator 114 is used to separate and limit the rows of battery cell modules, so as to further improve the connection stability of each battery cell module 210 within the housing 10.

[0195] Please refer to Figure 15 In some embodiments, the end plate 25 is provided with an overlap portion 25c, which abuts against the separator 114.

[0196] Understandably, the overlap 25c is an extension connected to the end plate 25. Here, the structure of the overlap 25c can be a connecting arm, a connecting lug, or a connecting block. The connection between the overlap 25c and the partition 114 increases the connection stability between the end of the end plate 25 away from the edge beam 112 and the partition plate.

[0197] Thus, the end plate 25 is connected to the separator 114 through the overlapping part 25c, thereby increasing the connection points between each battery cell module 210 and the housing 10.

[0198] Please refer to Figure 15 In some embodiments, the overlap 25c abuts against the top surface of the separator 114 away from the bottom plate 111, and the battery device includes a third locking attachment 33, which is locked to the overlap 25c and the separator 114 along the second direction Z.

[0199] Understandably, in this embodiment, the overlapping part 25c can be a connecting lug protruding from the end plate 25, and the third locking attachment 33 can be a screw, pin, or rivet, etc. The overlapping part 25c and the separator 114 are connected by the third locking attachment 33, thereby realizing the connection between the end plate 25 and the separator 114.

[0200] In this way, the third locking attachment 33 is used to connect the overlapping part 25c with the separator 114, further improving the installation stability of each battery cell module 210 in the housing 10.

[0201] In some embodiments, along the first direction X, the overlapping portions 25c on the corresponding end plates 25 of two adjacent battery cell modules 210 are locked to the separator 114 by a third locking attachment 33.

[0202] Understandably, the end plates 25 of two adjacent battery cell modules 210 are both far from the side beam 112. Therefore, the end plate 25 can be connected to the separator 114 through the overlap portion 25c. Specifically, the overlap portion 25c and the separator 114 are sequentially passed through the third locking attachment 33 to achieve the connection between the end plate 25 and the separator 114.

[0203] In this way, two adjacent battery cell modules 210 are connected to the separator 114 to improve the connection stability of the two battery cell modules 210 within the housing 10.

[0204] In some embodiments, the partition 114 includes a central longitudinal beam integrally formed with at least a portion of the base plate 111.

[0205] Understandably, the intermediate longitudinal beam is a beam structure integrally formed with the base plate 111. Here, the extension direction of the intermediate longitudinal beam can be the same as the extension direction of the side beam 112, or it can be perpendicular to the extension direction of the side beam 112.

[0206] Thus, by integrally forming at least a portion of the intermediate longitudinal beam with the base plate 111, the connection stability between the intermediate longitudinal beam and the base plate 111 is improved.

[0207] In some embodiments, the base plate 111 includes a plurality of sub-plates, wherein some of the sub-plates are integrally formed with the intermediate longitudinal beam, and the remaining sub-plates are welded together.

[0208] Understandably, when dealing with large-sized battery devices, the base plate 111 is typically formed by splicing and welding multiple sub-plates to obtain a larger storage space. Therefore, some of the sub-plates can be integrally formed with the intermediate longitudinal beam to improve the connection strength between the two and manufacturing efficiency.

[0209] Thus, the base plate 111 is divided into multiple sub-plates. According to actual usage requirements, some of the sub-plates are connected to the intermediate longitudinal beam, while the remaining sub-plates are connected by welding.

[0210] Please refer to Figures 5 to 15 In one specific embodiment, this application provides a battery device 100, including a housing 10, a plurality of battery cell modules 210, a first lock accessory 31, a second lock accessory 32, and a third lock accessory 33.

[0211] The housing 10 includes a base plate 111, two side beams 112 spaced apart on the base plate 111, and a mounting beam 113 on the side beams 112; and a plurality of battery cell modules 210 are placed between the two side beams 112. Each battery cell module 210 includes a plurality of pouch battery cells 20 arranged in a row and end plates 25 on opposite sides of the plurality of pouch battery cells 20. The end plates 25 are connected to the side beams 112 and the base plate 111.

[0212] Two side beams 112 are spaced apart along a first direction X. An end plate 25 is connected to the side beams 112 along the first direction X, and the end plate 25 is connected to the bottom plate 111 along a second direction Z, which is perpendicular to the first direction X. The side beams 112 are provided with a first locking hole 112a, and the bottom plate 111 is provided with a second locking hole 111a. The end plate 25 is provided with a first connecting hole 251 and a second connecting hole 252. A first locking attachment 31 is locked along the first direction X to the first locking hole 112a and the first connecting hole 251, so that the end plate 25 is locked to the side beams 112. A second locking attachment 32 is locked along the second direction Z to the second connecting hole 252 and the second locking hole 111a, so that the end plate 25 is locked to the bottom plate 111.

[0213] A first sealing element (not shown in the figure) is provided between the end plate 25 and the side beam 112, and the first sealing element surrounds the first locking hole 112a; and / or, a second sealing element (not shown in the figure) is provided between the end plate 25 and the bottom plate 111, and the second sealing element surrounds the second locking hole 111a.

[0214] The end plate 25 between two adjacent battery cell modules 210 includes a first sub-end plate 25a and a second sub-end plate 25b arranged in an interleaved manner; both the first sub-end plate 25a and the second sub-end plate 25b are provided with a first connecting hole 251; both the first sub-end plate 25a and the second sub-end plate 25b are provided with a second connecting hole 252. The dimensions of the first sub-end plate 25a and the second sub-end plate 25b are the same, and the first sub-end plate 25a and the second sub-end plate 25b are centrally symmetrical about the overlapping position. The first connecting holes 251 of the first sub-end plate 25a and the first connecting holes 251 of the second sub-end plate 25b are close to each other in the second direction Z.

[0215] The surface of the base plate 111 is coated with an adhesive (not shown in the figure), and the base plate 111 is bonded to each soft-pack battery cell 20 by the adhesive.

[0216] The battery cell module 210 includes a buffer pad (not shown) with at least one set of adjacent pouch cell 20 positioned between them in the third direction (Y). The battery cell module 210 also includes a connecting strip 30, which is located at the top end of each pouch cell 20 in the third direction (Y), and its opposite ends are connected to corresponding end plates 25. The battery cell module 210 further includes a pressure strip 40, which extends along the third direction (Y) and presses against each pouch cell 20 in the second direction (Z).

[0217] Multiple battery cell modules 210 are arranged along a first direction X to form multiple rows of battery cell modules. The multiple rows of battery cell modules are arranged at intervals along a third direction Y. A separator 114 is provided on the base plate 111, and the separator 114 is located between two adjacent rows of battery cell modules. The third direction Y is perpendicular to the first direction X. The overlapping part 25c abuts against the top surface of the separator 114 away from the base plate 111. The battery device includes a third locking attachment 33, which is locked to the overlapping part 25c and the separator 114 along a second direction Z.

[0218] Secondly, this application also provides an electrical device, including the aforementioned battery device 100, which is used to store or provide electrical energy.

[0219] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery device, characterized by, include: The box body includes a bottom plate, two side beams spaced apart on the bottom plate, and a mounting beam on the side beams; as well as, Multiple battery cell modules are arranged between two side beams. Each battery cell module includes multiple pouch battery cells arranged in an array and end plates disposed on opposite sides of the multiple pouch battery cells. The end plates are connected to the side beams and are also connected to the base plate. The battery cell module includes a buffer pad, and in the third direction, at least one set of two adjacent pouch battery cells are provided with the buffer pad.

2. The battery device according to claim 1, characterized by The two side beams are spaced apart along a first direction, the end plate is connected to the side beams along the first direction, and the end plate is connected to the bottom plate along a second direction, the second direction being perpendicular to the first direction.

3. The battery device of claim 2, wherein, The battery device includes a first locking attachment and a second locking attachment. The side beam is provided with a first locking hole, and the base plate is provided with a second locking hole. The end plate is provided with a first connecting hole and a second connecting hole. The first locking attachment is locked to the first locking hole and the first connecting hole along the first direction so that the end plate is locked to the side beam. The second locking attachment is locked to the second connecting hole and the second locking hole along the second direction so that the end plate is locked to the base plate.

4. The battery device of claim 3, wherein In the first direction, the orthographic projection of the first connecting hole is separated from the orthographic projection of the mounting beam.

5. The battery device of claim 3, wherein The mounting beam comprises multiple segments, with intervals on these segments designed to avoid the first connecting hole.

6. The battery device according to any one of claims 1 to 5, characterized by The mounting beam and the side beam are integrally formed.

7. The battery device of claim 3, wherein The first locking hole is a slotted hole; and / or, the second locking hole is a slotted hole.

8. The battery device of claim 3, wherein A first sealing element is provided between the end plate and the side beam, and the first sealing element surrounds the first locking hole; and / or A second sealing element is provided between the end plate and the bottom plate, and the second sealing element surrounds the second locking hole.

9. The battery device according to any one of claims 3, 4, 5, 7, 8, characterized by, The base plate has a solid portion, and the solid portion is provided with the second locking hole.

10. The battery device according to any one of claims 3, 4, 5, 7, 8, characterized by The base plate has a protrusion, and the protrusion has a second locking hole.

11. The battery device according to any one of claims 3, 4, 5, 7, 8, characterized by The base plate has a protrusion, and an insert is provided inside the protrusion. The insert has a second locking hole.

12. The battery device according to any one of claims 3 to 5, wherein The end plate between two adjacent battery cell modules includes a first sub-end plate and a second sub-end plate that are stacked in an interleaved manner. Both the first sub-end plate and the second sub-end plate are provided with the first connecting hole; both the first sub-end plate and the second sub-end plate are provided with the second connecting hole.

13. The battery device of claim 12, wherein, The first connection hole on the second sub-end plate is located at the end opposite to the mounting beam.

14. The battery device of claim 12, wherein, The dimensions of the first sub-end plate and the second sub-end plate are the same.

15. The battery device according to any one of claims 1 to 5, wherein The surface of the base plate is coated with an adhesive, and the base plate is bonded to each of the pouch battery cells by the adhesive.

16. The battery device according to any one of claims 1 to 5, wherein The battery cell module includes a connecting strip. In the third direction, the connecting strip is disposed at the top end of each of the pouch battery cells, and the opposite ends of the connecting strip are respectively connected to the corresponding end plates.

17. The battery device according to any one of claims 1 to 5, wherein The battery cell module includes a pressure strip, which extends in a third direction and presses onto each of the pouch battery cells in a second direction.

18. The battery device according to any one of claims 2 to 5, wherein Multiple battery cell modules are arranged along the first direction to form multiple rows of battery cell modules. The multiple rows of battery cell modules are arranged at intervals along a third direction. A separator is provided on the base plate. The separator is located between two adjacent rows of battery cell modules. The third direction is perpendicular to the first direction.

19. The battery device of claim 18, wherein, The end plate is provided with an overlapping portion, which abuts against the separator.

20. The battery device of claim 19, wherein, The overlapping portion abuts against the top surface of the separator opposite to the base plate, and the battery device includes a third locking attachment that is locked to the overlapping portion and the separator along a second direction.

21. The battery device of claim 20, wherein, Along the first direction, the overlapping portions on the end plates of two adjacent battery cell modules are locked to the separator by the third locking attachment.

22. The battery device of claim 18, wherein, The separator includes a central longitudinal beam, which is integrally formed with at least a portion of the base plate.

23. The battery device of claim 22, wherein, The base plate includes multiple sub-plates, some of which are integrally formed with the intermediate longitudinal beam, while the remaining sub-plates are welded together.

24. An electrical device, comprising: Includes the battery device as described in any one of claims 1 to 23, the battery device being used to store or provide electrical energy.

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