Battery device and electric device

Abstract

The utility model provides a battery device and an electric device. The battery device includes a first battery cell assembly and a case. The box body comprises a first wall and a plurality of second walls, the first wall and the plurality of second walls define a first accommodating space for accommodating the first battery monomer assembly, and the first wall is used for supporting the first battery monomer assembly. Wherein the first wall is provided with a first connecting part, the at least one second wall is provided with a second connecting part, the first connecting part is used for being connected with an electric device body, and the second connecting part is used for being connected with the electric device body. According to the technical scheme provided by the invention, the mounting reliability of the battery device can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a battery device and a power utilization device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery device technology is an important factor for their development.

[0003] In the development of battery device technology, how to improve the reliability of the installation of the battery device is a technical problem that needs to be solved in the battery device technology. CONTENT OF THE INVENTION

[0004] The present application provides a battery device and a power utilization device, which can improve the reliability of the installation of the battery device.

[0005] The present application is achieved by the following technical solutions:

[0006] In a first aspect, the present application provides a battery device, which comprises a first battery monomer assembly and a box body. The box body comprises a first wall and a plurality of second walls, the first wall and the plurality of second walls enclose a first containing space for containing the first battery monomer assembly, and the first wall is used for supporting the first battery monomer assembly. The first wall is provided with a first connecting portion, at least one of the second walls is provided with a second connecting portion, the first connecting portion is used for connecting a power utilization device body, and the second connecting portion is used for connecting the power utilization device body.

[0007] The technical solution of the present application embodiment, the first wall and the plurality of second walls enclose a first containing space for containing the first battery monomer assembly, the first connecting portion is arranged on the first wall, the second connecting portion is arranged on the second wall, and the first connecting portion and the second connecting portion are both used for connecting the power utilization device body, so that the battery device can be connected with the power utilization device body at different positions, the connection stress of the battery device and the power utilization device body is dispersed, the risk of shaking or connection failure of the battery device when the battery device is installed on the power utilization device body is reduced, the use of the battery device is affected, and the reliability of the installation of the battery device is improved.

[0008] In some embodiments, the first battery monomer assembly comprises a plurality of battery monomers arranged along a first direction. The plurality of second walls comprises two first sub-walls oppositely arranged along a second direction, and the two first sub-walls are respectively connected to two ends of the first wall in the second direction. The second connecting portion is arranged on the first sub-wall, and the number of the second connecting portions is a plurality, and the plurality of second connecting portions are arranged at intervals along the first direction. The first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

[0009] The technical scheme of the embodiment of the application further facilitates improving the reliability of the battery device installation by arranging the plurality of second connecting portions spaced apart along the first direction on the first sub-wall. Meanwhile, the first sub-wall is connected to both ends of the first wall in the second direction, and the thickness direction of the first wall is perpendicular to the second direction, that is, the first connecting portion and the second connecting portion are arranged on the walls of the box in different directions, so that the battery device can be connected to the electrical device body in different directions through the first connecting portion and the second connecting portion, thereby further facilitating improving the reliability of the battery device installation.

[0010] In some embodiments, along the first direction, the distance between the two adjacent second connecting portions is d1, and the following condition is met: 200mm≤d1≤600mm.

[0011] The technical scheme of the embodiment of the application meets the above condition in the first direction between the two adjacent second connecting portions. When d1≥200mm, the number of second connecting portions can be smaller, thereby facilitating improving the convenience of processing the first sub-wall; when d1≤600mm, the distance between the two adjacent second connecting portions is smaller, the size of the second connecting portion in the first direction can be larger, the connection area of the second connecting portion and the electrical device body in the first direction can be larger, thereby improving the reliability of the connection between the first sub-wall and the electrical device body, and further facilitating improving the reliability of the battery device installation.

[0012] In some embodiments, 350mm≤d1≤400mm.

[0013] The technical scheme of the embodiment of the application meets the above condition in the first direction between the two adjacent second connecting portions, thereby further facilitating improving the convenience of processing the first sub-wall, and further facilitating improving the reliability of the battery device installation.

[0014] In some embodiments, the first battery monomer assembly includes a plurality of battery monomers arranged along the first direction. The plurality of second walls includes two first sub-walls oppositely arranged along the second direction, and the two first sub-walls are respectively connected to both ends of the first wall in the second direction. The second connecting portion is arranged on the first sub-wall, and the number of the second connecting portions is a plurality, and the plurality of second connecting portions are arranged spaced apart along the thickness direction of the first wall. Wherein, the first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

[0015] The technical scheme of the embodiment of the application further improves the reliability of the battery device installation by arranging the plurality of second connecting portions spaced along the thickness direction of the first wall on the first sub-wall. Meanwhile, the first sub-wall is connected to both ends of the first wall in the second direction, and the thickness direction of the first wall is perpendicular to the second direction, that is, the first connecting portion and the second connecting portion are arranged on the walls of the box in different directions, so that the battery device is connected to the electrical device body in different directions through the first connecting portion and the second connecting portion, and the reliability of the battery device installation is further improved.

[0016] In some embodiments, along the thickness direction of the first wall, the distance between the two adjacent second connecting portions is d2, and the following condition is met: 50mm≤d2≤400mm.

[0017] The technical scheme of the embodiment of the application meets the above condition in the distance between the two adjacent second connecting portions in the thickness direction of the first wall. When d2≥50mm, the number of the second connecting portions can be smaller, which is beneficial to improve the convenience of the first sub-wall processing. When d2≤400mm, the distance between the two adjacent second connecting portions is smaller, the size of the second connecting portion in the thickness direction of the first wall can be larger, the connection area of the second connecting portion and the electrical device body in the thickness direction of the first wall can be larger, which can improve the reliability of the connection between the first sub-wall and the electrical device body, and further improve the reliability of the battery device installation.

[0018] In some embodiments, 120mm≤d2≤200mm.

[0019] The technical scheme of the embodiment of the application meets the above condition in the distance between the two adjacent second connecting portions in the thickness direction of the first wall in the first direction, which further improves the convenience of the first sub-wall processing and further improves the reliability of the battery device installation.

[0020] In some embodiments, the first sub-wall is internally provided with a cavity.

[0021] The technical scheme of the embodiment of the application can reduce the weight of the first sub-wall by arranging the cavity in the interior of the first sub-wall, thereby reducing the weight of the battery device and being beneficial to improve the energy density of the battery device.

[0022] In some embodiments, the first sub-wall is provided with a partition beam, and both ends of the partition beam in the second direction are connected to the inner wall of the cavity. In the second direction, the second connecting portion extends from the surface of the first battery monomer assembly away from the first sub-wall to the partition beam.

[0023] The technical scheme of the embodiment of the application can improve the structural strength of the first sub-wall by arranging the partition beam in the cavity and connecting the two ends of the partition beam in the second direction to the inner wall of the cavity. Meanwhile, the second connecting part extends from the surface of the first sub-wall to the partition beam, so that the second connecting part can be arranged on the entity after extending from the surface of the first sub-wall to the cavity, thereby improving the effective size of the second connecting part, facilitating the reliability of the installation of the second connecting part, and facilitating the reliability of the installation of the battery device.

[0024] In some embodiments, the first connecting part is a first connecting hole, and the second connecting part is a second connecting hole.

[0025] The technical scheme of the embodiment of the application is that the first connecting part is a first connecting hole, and the second connecting part is a second connecting hole, so that the first connecting part and the second connecting part are easy to process, and the convenience of connecting the battery device and the power consumption device body is facilitated.

[0026] In some embodiments, the first battery monomer assembly includes a plurality of battery monomers arranged along the first direction. The plurality of second walls includes two second sub-walls arranged opposite along the first direction, and the two second sub-walls are respectively connected to the two ends of the first wall in the first direction. The second connecting part is arranged on the second sub-wall, and the number of the second connecting part is a plurality, and the plurality of second connecting parts are arranged in the second direction.

[0027] The technical scheme of the embodiment of the application further improves the reliability of the installation of the battery device by arranging a plurality of second connecting parts in the second direction on the second sub-wall. Meanwhile, the second sub-wall is connected to the two ends of the first wall in the first direction, and the thickness direction of the first wall is perpendicular to the first direction, that is, the first connecting part and the second connecting part are arranged on the tank wall in different directions of the tank, so that the battery device is connected to the power consumption device body in different directions through the first connecting part and the second connecting part, and the reliability of the installation of the battery device is further improved.

[0028] In some embodiments, the first battery monomer assembly includes a plurality of battery monomers arranged along the first direction. The plurality of second walls includes two second sub-walls arranged opposite along the first direction, and the two second sub-walls are respectively connected to the two ends of the first wall in the first direction. The second connecting part is arranged on the second sub-wall, and the number of the second connecting part is a plurality, and the plurality of second connecting parts are arranged in the thickness direction of the first wall.

[0029] The technical scheme of the embodiment of the application further improves the reliability of the battery device installation by arranging multiple second connecting portions along the thickness direction of the first wall on the second sub-wall. Meanwhile, the second sub-wall is connected to both ends of the first wall in the first direction, and the thickness direction of the first wall is perpendicular to the first direction, that is, the first connecting portion and the second connecting portion are arranged on the walls of the box in different directions, so that the battery device is connected to the electrical device body in different directions through the first connecting portion and the second connecting portion, thereby further improving the reliability of the battery device installation.

[0030] In some embodiments, the multiple second walls include a third sub-wall, and the third sub-wall is arranged opposite to the first wall along the thickness direction of the first wall. The second connecting portion is arranged on the third sub-wall, and the number of the second connecting portions is multiple, and the multiple second connecting portions are arranged in the first direction.

[0031] The technical scheme of the embodiment of the application further improves the reliability of the battery device installation by arranging the third sub-wall opposite to the first wall along the thickness direction of the first wall, and arranging the second connecting portion on the third sub-wall, that is, the first connecting portion and the second connecting portion are arranged on both ends of the box in the thickness direction of the first wall.

[0032] In some embodiments, the first battery monomer assembly includes multiple battery monomers arranged along the first direction. The number of the first connecting portions is multiple, and the multiple first connecting portions are arranged in the first direction.

[0033] The technical scheme of the embodiment of the application further improves the reliability of the battery device installation by arranging multiple first connecting portions along the first direction on the first wall.

[0034] In some embodiments, along the first direction, the distance between two adjacent first connecting portions is d3, and the following condition is met: 200mm≤d3≤400mm.

[0035] The technical scheme of the embodiment of the application meets the above condition between the distance between two adjacent first connecting portions in the first direction. When d3≥200mm, the number of the first connecting portions can be smaller, thereby improving the convenience of processing the first wall. When d3≤400mm, the distance between two adjacent first connecting portions is smaller, the size of the first connecting portion in the first direction can be larger, the connection area of the first connecting portion and the electrical device body in the first direction can be larger, thereby improving the reliability of the connection between the first wall and the electrical device body, and further improving the reliability of the battery device installation.

[0036] In some embodiments, the first battery monomer assembly includes multiple battery monomers arranged along the first direction. The number of the first connecting portions is multiple, and the multiple first connecting portions are arranged in the second direction, and the first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

[0037] The technical scheme of the embodiment of the present application further improves the reliability of the battery device installation by arranging multiple first connecting parts spaced apart in the second direction on the first wall.

[0038] In some embodiments, the distance between two adjacent first connecting parts in the second direction is d4, and 400mm≤d4≤600mm is satisfied.

[0039] The technical scheme of the embodiment of the present application satisfies the above condition for the distance between two adjacent first connecting parts in the second direction. When d4≥400mm, the number of first connecting parts can be smaller, and the convenience of processing the first wall is improved. When d4≤600mm, the distance between two adjacent first connecting parts is smaller, the size of the first connecting part in the second direction can be larger, the connecting area of the first connecting part and the body of the electric device in the second direction can be larger, and the reliability of the connection between the first wall and the body of the electric device is improved, thereby improving the reliability of the battery device installation.

[0040] In some embodiments, the box body includes a first sub-box body and a second sub-box body, the first sub-box body and the second sub-box body are oppositely arranged in the thickness direction of the first wall, and the first sub-box body and the second sub-box body are fastened together. The battery device includes a bracket and a second battery monomer assembly, the first battery monomer assembly and the second battery monomer assembly are arranged in the thickness direction of the first wall, the bracket is arranged in the box body, the first sub-box body and the bracket form a first containing space, the first battery monomer assembly is contained in the first containing space, the second sub-box body and the bracket form a second containing space, and the second battery monomer assembly is arranged in the second containing space.

[0041] The technical scheme of the embodiment of the present application forms the first containing space by the first sub-box body and the bracket to contain the first battery monomer assembly, and forms the second containing space by the second sub-box body and the bracket to contain the second battery monomer assembly, which facilitates the stacked arrangement of the first battery monomer assembly and the second battery monomer assembly in the thickness direction of the first wall, thereby reducing the risk of interference between the first battery monomer assembly and the second battery monomer assembly, and improving the reliability of the battery device.

[0042] In some embodiments, the box body includes a bottom wall and a top wall oppositely arranged in the thickness direction of the first wall, two first side walls oppositely arranged in the second direction, two second side walls oppositely arranged in the second direction, and two third side walls oppositely arranged in the first direction. The two first side walls are arranged at two ends of the bottom wall in the second direction to form a first sub-box body, the two second side walls are arranged at two ends of the top wall in the second direction to form a second sub-box body, the first sub-box body and the second sub-box body are fastened together and form two openings at two ends in the first direction, and the two third side walls respectively close the two openings. The thickness direction of the first wall, the first direction and the second direction are perpendicular to each other, and the bottom wall is the first wall.

[0043] The technical scheme of the embodiment of the application is characterized in that the third side wall is arranged, the connector and other components such as the explosion-proof valve and the water-cooling connector are arranged on the third side wall, and the normal charging and discharging of the battery device is facilitated. The opening is closed by the third side wall, and the sealing performance of the box body is improved.

[0044] In a second aspect, the application further provides a power utilization device, comprising a power utilization device body and the battery device of any one of the first aspect. The first connecting part is connected to the power utilization device body, and the second connecting part is connected to the power utilization device body.

[0045] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and the attached drawings. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical scheme of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0047] Figure 1 The structural schematic diagram of the vehicle is provided for some embodiments of the application;

[0048] Figure 2 The structural exploded schematic diagram of the battery device is provided for some embodiments of the application;

[0049] Figure 3 The schematic diagram of the battery device is provided for some embodiments of the application;

[0050] Figure 4 The schematic diagram of the first sub-wall is provided for some embodiments of the application;

[0051] Figure 5 The schematic diagram of the first sub-wall is provided for some other embodiments of the application;

[0052] Figure 6 The schematic diagram of the first sub-wall is provided for some other embodiments of the application;

[0053] Figure 7 The internal structural schematic diagram of the first sub-wall is provided for some embodiments of the application;

[0054] Figure 8 The schematic diagram of the second sub-wall is provided for some embodiments of the application;

[0055] Figure 9 The schematic diagram of the second sub-wall is provided for some other embodiments of the application;

[0056] Figure 10 A schematic view of a second sub-wall provided for some embodiments of the present application;

[0057] Figure 11 A schematic view of a third sub-wall provided for some embodiments of the present application;

[0058] Figure 12 A schematic view of a first wall provided for some embodiments of the present application;

[0059] Figure 13 A schematic view of a first wall provided for some embodiments of the present application;

[0060] Figure 14 A schematic view of a first wall provided for some embodiments of the present application;

[0061] Figure 15 A schematic view of an internal structure of a battery device provided for some embodiments of the present application.

[0062] Figure: 1 - battery device; 10 - first battery cell assembly; 11 - first battery cell; 20 - box body; 21 - first wall; 211 - first connecting part; 212 - bottom wall; 22 - second wall; 221 - second connecting part; 222 - first sub-wall; 2221 - cavity; 2222 - partition beam; 223 - second sub-wall; 224 - third sub-wall; 225 - top wall; 226 - first side wall; 227 - second side wall; 228 - third side wall; 23 - first containing space; 24 - first sub-box body; 25 - second sub-box body; 26 - second containing space; 27 - opening; 30 - support; 40 - second battery cell assembly; 41 - second battery cell; 100 - vehicle; 110 - controller; 120 - motor; X - first direction; Y - second direction; Z - thickness direction of the first wall. DETAILED DESCRIPTION

[0063] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0064] 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 belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used in the description of the disclosed subject matter should not be interpreted as specific to the embodiments described herein, but should be interpreted as being generic to the embodiments described herein.

[0065] Reference throughout this application to "embodiments" means embodiments described in connection with the embodiments. The appearance of the phrase "in embodiments" in various locations in the specification is not necessarily intended to refer to the same set of embodiments, or to require a combination of features that are described in connection with a particular set of embodiments. It will be appreciated that the embodiments described herein can be combined with other embodiments.

[0066] In the description of the application, it is necessary to explain that, unless otherwise explicitly defined and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0067] The term "and / or" in the application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or the second direction, which can mean that A exists alone, A and the second direction exist together, and the second direction exists alone. In addition, the character " / " in the application generally represents that the front and rear associated objects have an "or" relationship.

[0068] "Multiple" appearing in the application refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] The battery apparatus mentioned in the embodiments of the application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a hybrid manner through a busbar component.

[0070] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0071] In some embodiments, the battery device can be a battery pack, which includes a box and one or more battery cell assemblies, the battery cell assemblies are accommodated in the box.

[0072] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box by fixing the battery module in the box.

[0073] As an example, the battery cell assembly can also be accommodated in the box by directly fixing a plurality of battery cells in the box.

[0074] As an example, the box forms a closed space to accommodate the battery cell assembly. Here, closed means covered or closed, which can be sealed or unsealed.

[0075] As an example, the box can include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame, so that the box forms a closed space inside to accommodate the battery cell assembly.

[0076] As an example, the box can be part of the chassis structure of the vehicle. For example, the top cover of the box can be at least part of the floor of the vehicle, or the frame of the box can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0077] In some embodiments, the battery device refers to an energy storage device, which includes a box, at least one side of the box is provided with a door. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0078] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0079] The battery cell can be, but is not limited to, a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc.

[0080] The development of battery technology needs to consider various design factors, such as energy density, cycle life, discharge capacity, charge-discharge rate, and other performance parameters. In addition, the reliability of the battery device is also a key factor to be considered as the environmental conditions and / or the internal conditions of the battery change.

[0081] At present, the battery monomer assembly is arranged in the box body and is supported on the bottom wall to form a battery device. The battery device is installed on the electric device to supply power to the electric device. The battery device is generally connected to the body of the electric device by bolting the first wall of the box body.

[0082] However, the connection between the first wall of the box body of the battery device and the body of the electric device has a risk of connection failure, thereby affecting the installation reliability of the battery device. At the same time, the battery device can have a large size in the thickness direction of the first wall. The electric device can be impacted by the outside or can be shaken by itself during use, thereby causing the battery device to shake, which can affect the normal use of the battery device, and the installation reliability of the battery device is low.

[0083] Based on the above considerations, in order to solve the problem of connection failure of the battery device or shaking of the battery device affecting the installation reliability of the battery device, the embodiments of the present application provide a battery device. The battery device includes a first battery monomer assembly and a box body. The box body includes a first wall and a plurality of second walls. The first wall and the plurality of second walls enclose a first containing space for containing the first battery monomer assembly, and the first wall is used to support the first battery monomer assembly. The first wall is provided with a first connecting portion, and at least one second wall is provided with a second connecting portion. The first connecting portion is used to connect the body of the electric device, and the second connecting portion is used to connect the body of the electric device.

[0084] The first wall and the plurality of second walls enclose a first containing space for containing the first battery monomer assembly. By providing the first connecting portion on the first wall and the second connecting portion on the second wall, the first connecting portion and the second connecting portion are connected to the body of the electric device, so that the battery device can be connected to the body of the electric device at different positions. The connection stress of the battery device and the body of the electric device is dispersed, thereby reducing the risk of shaking or connection failure of the battery device when the battery device is installed on the body of the electric device, thereby affecting the use of the battery device, and improving the installation reliability of the battery device.

[0085] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery devices, such as electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0086] The following embodiments are described by taking a vehicle as an example for convenience of illustration.

[0087] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle is provided for some embodiments of the present application. The vehicle 100 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric vehicle, a hybrid electric vehicle or a range extended vehicle. The vehicle 100 is internally provided with a battery device 1, which can be arranged at the bottom, head or tail of the vehicle 100. The battery device 1 can be used for power supply of the vehicle 100, for example, the battery device 1 can be used as an operating power source of the vehicle 100, which is used for the circuit system of the vehicle 100, for example, for the working power demand of the vehicle 100 during starting, navigation and running.

[0088] The vehicle 100 can further include a controller 110 and a motor 120, and the controller 110 is used to control the battery device 1 to supply power to the motor 120, for example, for the working power demand of the vehicle 100 during starting, navigation and running.

[0089] In some embodiments of the present application, the battery device 1 can not only be used as an operating power source of the vehicle 100, but also be used as a driving power source of the vehicle 100, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 100.

[0090] Please refer to Figure 2 and Figure 3 , Figure 2 A structural exploded view of a battery device is provided for some embodiments of the present application, Figure 3 A schematic view of a battery device is provided for some embodiments of the present application. A battery device 1 is provided in the embodiments of the present application. The battery device 1 includes a first battery monomer assembly 10 and a box 20. The box 20 includes a first wall 21 and a plurality of second walls 22, which enclose a first containing space 23 for containing the first battery monomer assembly 10, and the first wall 21 is used to support the first battery monomer assembly 10. The first wall 21 is provided with a first connecting part 211, and at least one second wall 22 is provided with a second connecting part 221, the first connecting part 211 is used to connect the body of the electric device, and the second connecting part 221 is used to connect the body of the electric device.

[0091] In some embodiments, the first battery monomer assembly 10 is contained in the box 20, and the box 20 protects the first battery monomer assembly 10, thereby reducing the risk of damage to the first battery monomer assembly 10.

[0092] In the battery device 1, the first battery cell assembly 10 can include a plurality of first battery cells 11, which can be connected in series, in parallel, or in a mixed connection, which means that the plurality of first battery cells 11 are connected in both series and parallel. The battery device 1 can include one first battery cell assembly 10, or the battery device 1 can include a plurality of first battery cell assemblies 10, which are connected in series, in parallel, or in a mixed connection to form an integral whole and are accommodated in the box 20.

[0093] The first battery cell 11 can be a secondary battery or a primary battery, and can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto.

[0094] In some embodiments, the first wall 21 can be a bottom wall 212 of the box 20, that is, when the box 20 is arranged in the electric device, the first wall 21 can be a side wall of the box 20 below the first battery device 1 supported by the first wall 21.

[0095] In some embodiments, a part of the plurality of second walls 22 can be side walls of the box 20, and one of the plurality of second walls 22 can be a top wall 225 of the box 20.

[0096] In some embodiments, the first wall 21 and the plurality of second walls 22 collectively form the box 20. The extension direction of the first wall 21 can intersect the extension direction of a part of the second walls 22, that is, the first connecting portion 211 and the second connecting portion 221 can be located on the side walls of the box 20 in different directions.

[0097] In some embodiments, the first wall 21 and one of the second walls 22 can be oppositely arranged, the thickness direction Z of the first wall 21 is parallel to the thickness direction of one of the second walls 22, and the first wall 21 and one of the second walls 22 are arranged at both ends of the box 20 in the thickness direction Z of the first wall 21, that is, the first connecting portion 211 and the second connecting portion 221 can be located at both ends of the box 20 in the same direction.

[0098] In some embodiments, the first connecting portion 211 and the second connecting portion 221 can have the same structure, and the difference between the first connecting portion 211 and the second connecting portion 221 is only that they are arranged on different side walls.

[0099] In some embodiments, the first connecting portion 211 and the second connecting portion 221 can have different structures.

[0100] In some embodiments, the first connecting portion 211 and the second connecting portion 221 can be threaded holes, and the body of the electric device can be provided with threaded holes corresponding to the first connecting portion 211 and the second connecting portion 221, and the connection between the battery device 1 and the body of the electric device can be achieved by bolts or screws.

[0101] In some embodiments, the first connecting part 211 and the second connecting part 221 can be buckles, and the power device body can be provided with buckle slots corresponding to the buckles, so as to realize the connection between the battery device 1 and the power device body through the cooperation of the buckles and the buckle slots.

[0102] The connection mode of the first connecting part 211 and the second connecting part 221 with the power device body is not limited to the above mode.

[0103] In some embodiments, the power device can be a vehicle, and the power device body can be a vehicle frame, and the battery device 1 is arranged on the vehicle frame.

[0104] The technical scheme of the embodiments of the present application, the first wall 21 and the plurality of second walls 22 enclose the first containing space 23 for containing the first battery monomer assembly 10, by arranging the first connecting part 211 on the first wall 21, arranging the second connecting part 221 on the second wall 22, and the first connecting part 211 and the second connecting part 221 are both used to connect the power device body, so that the battery device 1 can be connected with the power device at different positions, which facilitates the dispersion of the connection stress between the battery device 1 and the power device, thereby reducing the risk of affecting the use of the battery device 1 due to the shaking or connection failure of the battery device 1 when the battery device 1 is installed on the power device body, thereby improving the reliability of the installation of the battery device 1.

[0105] Please refer to Figure 2 and Figure 3 , and refer to Figure 4 and Figure 5 , Figure 4 the schematic view of the first sub-wall provided by some embodiments of the present application, Figure 6 the schematic view of the first sub-wall provided by some embodiments of the present application. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along a first direction X. The plurality of second walls 22 includes two first sub-walls 222 oppositely arranged along a second direction Y, and the two first sub-walls 222 are respectively connected to both ends of the first wall 21 in the second direction Y. The second connecting part 221 is arranged on the first sub-wall 222, and the number of the second connecting part 221 is a plurality, and the plurality of second connecting parts 221 are arranged at intervals along the first direction X. Among them, the first direction X, the second direction Y and the thickness direction Z of the first wall are perpendicular to each other.

[0106] In some embodiments, the first direction X can be represented by the direction indicated by the letter X in the figure.

[0107] In some embodiments, the second direction Y can be represented by the direction indicated by the letter Y in the figure.

[0108] In some embodiments, the thickness direction Z of the first wall can be represented by the direction indicated by the letter Z in the figure.

[0109] In some embodiments, the first direction X can be the length direction of the battery device 1, the second direction Y can be the width direction of the battery device 1, and the thickness direction Z of the first wall can be the height direction of the battery device 1. The first direction X, the second direction Y, and the thickness direction Z of the first wall can be perpendicular to each other.

[0110] In some embodiments, the thickness direction Z of the first wall can be parallel to the direction of gravity.

[0111] In some embodiments, the number of first sub-walls 222 can be two, and the two first sub-walls 222 are respectively arranged at the two ends of the first wall 21 in the second direction Y. One end of the first sub-wall 222 in the thickness direction Z of the first wall is connected to the first wall 21.

[0112] In some embodiments, the second connecting part 221 can be arranged only on the first sub-wall 222.

[0113] In some embodiments, the number of second connecting parts 221 can be multiple, and a part of the multiple second connecting parts 221 can be arranged on the first sub-wall 222, and another part can be arranged on other walls of the box 20.

[0114] In some embodiments, the number of second connecting parts 221 is multiple, such as two, three, four, etc. The multiple second connecting parts 221 are arranged on the first sub-wall 222 at intervals along the first direction X. Among them, the orthographic projection of the multiple second connecting parts 221 can overlap, or a part of the orthographic projection of the multiple second connecting parts 221 overlaps, another part of the orthographic projection of the multiple second connecting parts 221 does not overlap, or the orthographic projection of the multiple second connecting parts 221 does not overlap.

[0115] The technical scheme of the embodiments of the present application further improves the reliability of the installation of the battery device 1 by arranging multiple second connecting parts 221 on the first sub-wall 222 at intervals along the first direction X. At the same time, the first sub-wall 222 is connected to the two ends of the first wall 21 in the second direction Y, and the thickness direction Z of the first wall is perpendicular to the second direction Y. That is, the first connecting part 211 and the second connecting part 221 are arranged on the walls of the box 20 in different directions, so that the battery device 1 can be connected to the body of the electric device in different directions through the first connecting part 211 and the second connecting part 221, which further improves the reliability of the installation of the battery device 1.

[0116] Please refer to Figure 4In some embodiments, the distance between two adjacent second connecting portions 221 in the first direction X is d1, and 200mm≤d1≤600mm is satisfied.

[0117] In some embodiments, the plurality of second connecting portions 221 are arranged at intervals in the first direction X, and the distance between two adjacent second connecting portions 221 in the plurality of second connecting portions 221 can be the same or different.

[0118] In some embodiments, the distance between two adjacent second connecting portions 221 in the first direction X is d1, and 200mm≤d1≤600mm is satisfied, that is, d1 can be any value or a value between any two values in 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, and 600mm.

[0119] In some embodiments, the second connecting portion 221 can be arranged on one side of the first sub-wall 222 in the thickness direction Z of the first wall. For example, the second connecting portion 221 can be arranged on the side of the first sub-wall 222 close to the first wall 21, or the second connecting portion 221 can be arranged on the side of the first sub-wall 222 away from the first wall 21.

[0120] In some embodiments, the second connecting portion 221 can be arranged at an intermediate position of the first sub-wall 222 in the thickness direction Z of the first wall.

[0121] The technical scheme of the embodiments of the present application satisfies the above condition for the distance between two adjacent second connecting portions 221 in the first direction X. When d1≥200mm, the number of second connecting portions 221 can be smaller, which is beneficial to improve the convenience of processing the first sub-wall 222. When d1≤600mm, the distance between two adjacent second connecting portions 221 is smaller, the size of the second connecting portion 221 in the first direction X can be larger, the connection area of the second connecting portion 221 and the body of the electrical device in the first direction X can be larger, which can improve the reliability of the connection between the first sub-wall 222 and the body of the electrical device, and further improve the reliability of the installation of the battery device 1.

[0122] Please refer to Figure 4 In some embodiments, 350mm≤d1≤400mm is satisfied.

[0123] In some embodiments, the distance between two adjacent second connecting portions 221 in the first direction X is d1, and 350mm≤d1≤400mm is satisfied, that is, d1 can be any value or a value between any two values in 350mm, 360mm, 370mm, 380mm, 390mm, and 400mm.

[0124] The technical scheme of the embodiment of the present application is that the distance between the two adjacent second connecting parts 221 in the first direction X meets the above condition, which further facilitates the convenience of processing the first sub-wall 222 and further facilitates the reliability of the installation of the battery device 1.

[0125] Please refer to Figure 5 , Figure 5 The first sub-wall provided by some other embodiments of the present application is shown in the schematic view. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along the first direction X. The plurality of second walls 22 includes two first sub-walls 222 oppositely arranged along the second direction Y, and the two first sub-walls 222 are respectively connected to the two ends of the first wall 21 in the second direction Y. The second connecting part 221 is arranged on the first sub-wall 222, and the number of the second connecting part 221 is a plurality, and the plurality of second connecting parts 221 are arranged in the thickness direction Z of the first wall. Wherein, the first direction X, the second direction Y and the thickness direction Z of the first wall are perpendicular to each other.

[0126] In some embodiments, the number of the second connecting part 221 is a plurality, and the plurality of second connecting parts 221 are arranged in the thickness direction Z of the first wall. Wherein, the orthographic projection of the plurality of second connecting parts 221 can overlap, or the orthographic projection of a part of the plurality of second connecting parts 221 overlaps, the orthographic projection of another part of the plurality of second connecting parts 221 does not overlap, or the orthographic projection of the plurality of second connecting parts 221 does not overlap.

[0127] In some embodiments, the number of the second connecting part 221 can be a plurality, and a part of the plurality of second connecting parts 221 can be arranged in the first direction X, and another part of the plurality of second connecting parts 221 can be arranged in the thickness direction Z of the first wall.

[0128] In some embodiments, the plurality of second connecting parts 221 can be arranged in an array along the first direction X and the thickness direction Z of the first wall.

[0129] The technical scheme of the embodiment of the present application is that the plurality of second connecting parts 221 arranged in the thickness direction Z of the first wall are arranged on the first sub-wall 222, which further improves the reliability of the installation of the battery device 1. At the same time, the first sub-wall 222 is connected to the two ends of the first wall 21 in the second direction Y, the thickness direction Z of the first wall is perpendicular to the second direction Y, that is, the first connecting part 211 and the second connecting part 221 are arranged on the wall of the box in different directions, so that the battery device 1 is connected to the body of the electric device in different directions through the first connecting part 211 and the second connecting part 221, which further improves the reliability of the installation of the battery device 1.

[0130] Please refer toFigure 5 In some embodiments, the distance between two adjacent second connecting portions 221 along the thickness direction Z of the first wall is d2, and 50mm≤d2≤400mm is satisfied.

[0131] In some embodiments, the plurality of second connecting portions 221 are arranged at intervals in the thickness direction Z of the first wall, and the distance between two adjacent second connecting portions 221 in the plurality of second connecting portions 221 can be the same or different.

[0132] In some embodiments, the distance between two adjacent second connecting portions 221 along the thickness direction Z of the first wall is d2, and 50mm≤d2≤400mm is satisfied, that is, d2 can be any value or a value between any two values in 50mm, 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, and 400mm.

[0133] The technical solution of the embodiments of the present application satisfies the above condition for the distance between two adjacent second connecting portions 221 in the thickness direction Z of the first wall. When d2≥50mm, the number of second connecting portions 221 can be smaller, which is beneficial to improve the convenience of processing the first sub-wall 222. When d2≤400mm, the distance between two adjacent second connecting portions 221 is smaller, the size of the second connecting portion 221 in the thickness direction Z of the first wall can be larger, the connection area of the second connecting portion 221 and the body of the electrical device in the thickness direction Z of the first wall can be larger, which can improve the reliability of the connection between the first sub-wall 222 and the body of the electrical device, and further improve the reliability of the installation of the battery device 1.

[0134] Please refer to Figure 5 In some embodiments, 120mm≤d2≤200mm.

[0135] In some embodiments, the distance between two adjacent second connecting portions 221 along the thickness direction Z of the first wall is d2, and 50mm≤d2≤400mm is satisfied, that is, d2 can be any value or a value between any two values in 50mm, 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, and 400mm.

[0136] The technical solution of the embodiments of the present application satisfies the above condition for the distance between two adjacent second connecting portions 221 in the thickness direction Z of the first wall. When d2≥50mm, the number of second connecting portions 221 can be smaller, which is beneficial to improve the convenience of processing the first sub-wall 222. When d2≤400mm, the distance between two adjacent second connecting portions 221 is smaller, the size of the second connecting portion 221 in the thickness direction Z of the first wall can be larger, the connection area of the second connecting portion 221 and the body of the electrical device in the thickness direction Z of the first wall can be larger, which can improve the reliability of the connection between the first sub-wall 222 and the body of the electrical device, and further improve the reliability of the installation of the battery device 1.

[0137] Please refer to Figure 7 , Figure 7A schematic view of an internal structure of the first sub-wall provided for some embodiments of the present application, Figure 7 A schematic view of a structure of the first sub-wall in a first direction as an observation direction, in which the second connecting portion is shown by a dashed line. In some embodiments, the first sub-wall 222 is internally provided with a cavity 2221.

[0138] In some embodiments, the first sub-wall 222 has a certain thickness in the first direction X, that is, in the thickness direction of the first sub-wall 222, and the cavity 2221 can be provided in the interior of the first sub-wall 222 under the condition that the structural strength of the first sub-wall 222 is met.

[0139] In some embodiments, the first sub-wall 222 can be formed by one-piece extrusion to form the cavity 2221, or can be a one-piece plate member that is machined to form the cavity 2221, or can be two relatively thin plate members that are arranged in the first direction X with a gap to form the cavity 2221.

[0140] In some embodiments, the first sub-wall 222 can be closed after the cavity 2221 is formed, and the opening 27 of the cavity 2221 in the second direction Y is closed by other plate members, and then connected with other box walls to form the box body 20. Or, the first sub-wall 222 forms the cavity 2221, and the two ends of the cavity 2221 in the second direction Y have openings 27, and the first sub-wall 222 is connected with other box walls, and the openings 27 of the cavity 2221 are closed by other box walls.

[0141] The technical scheme of the embodiments of the present application can reduce the weight of the first sub-wall 222, thereby reducing the weight of the battery device 1, and improving the energy density of the battery device 1.

[0142] Please refer to Figure 7 In some embodiments, the first sub-wall 222 is provided with a partition beam 2222, and the two ends of the partition beam 2222 in the second direction Y are connected to the inner wall of the cavity 2221. In the second direction Y, the second connecting portion 221 extends from the surface of the first sub-wall 222 away from the first battery monomer assembly 10 to the partition beam 2222.

[0143] In some embodiments, the partition beam 2222 can be arranged opposite to the first wall 21, and the thickness direction of the partition beam 2222 can be parallel to the thickness direction Z of the first wall.

[0144] In some embodiments, the partition beam 2222 can extend in the second direction Y, and the two ends of the partition beam 2222 in the second direction Y are respectively connected to the inner wall of the cavity 2221.

[0145] In some embodiments, the partition beam 2222 can be integrally formed with the first sub-wall 222, or the partition beam 2222 can be arranged in the cavity 2221 after the cavity 2221 is formed in the first sub-wall 222.

[0146] In some embodiments, the number of partition beams 2222 can be multiple, and the multiple partition beams 2222 can be arranged in the thickness direction Z of the first wall.

[0147] In some embodiments, the number of partition beams 2222 can be multiple, and the thickness direction of a part of the multiple partition beams 2222 can be parallel to the thickness direction Z of the first wall, and the thickness direction of another part of the multiple partition beams 2222 can be intersected with the thickness direction Z of the first wall.

[0148] In some embodiments, the first sub-wall 222 can have an inner surface and an outer surface, the inner surface being a surface of the first sub-wall 222 facing the first battery monomer assembly 10, and the outer surface being a surface of the first sub-wall 222 facing away from the first battery monomer assembly 10. The second connecting portion 221 can be arranged on the outer surface of the first sub-wall 222 to facilitate connection with the body of the power utilization device, and the second connecting portion 221 can be arranged in the first direction X when the second connecting portion 221 is arranged on the first sub-wall 222. Since the cavity 2221 is arranged inside the first sub-wall 222, the second connecting portion 221 will extend into the cavity 2221 after being arranged in the second direction Y for a distance, which affects the reliability of the arrangement of the second connecting portion 221. Therefore, the second connecting portion 221 is arranged in the second direction Y corresponding to the partition beam 2222, so that the second connecting portion 221 extends from the surface of the first sub-wall 222 facing away from the first battery monomer assembly 10 to the partition beam 2222, thereby improving the reliability of the arrangement of the second connecting portion 221.

[0149] The technical scheme of the embodiments of the present application can improve the structural strength of the first sub-wall 222 by arranging the partition beam 2222 inside the cavity 2221, and connecting the two ends of the partition beam 2222 in the second direction Y with the inner wall of the cavity 2221. At the same time, the second connecting portion 221 extends from the surface of the first sub-wall 222 facing away from the first battery monomer assembly 10 to the partition beam 2222, so that the second connecting portion 221 can be arranged on the entity after extending from the surface of the first sub-wall 222 to the cavity 2221, thereby improving the effective size of the arrangement of the second connecting portion 221, thereby facilitating the improvement of the reliability of the installation of the second connecting portion 221, and thereby facilitating the improvement of the reliability of the installation of the battery device 1.

[0150] In some embodiments, the first connecting portion 211 is a first connecting hole, and the second connecting portion 221 is a second connecting hole.

[0151] In some embodiments, the first connecting part 211 can be a first connecting hole, the second connecting part 221 can be a second connecting hole, and the first connecting part 211 and the second connecting part 221 can be formed on the first wall 21 and the second wall 22 by machining.

[0152] In some embodiments, the hole inside the first connecting hole and the second connecting hole can be provided with threads, and the battery device body can be locked by bolts or screws.

[0153] The technical scheme of the embodiments of the present application, the first connecting part 211 is a first connecting hole, and the second connecting part 221 is a second connecting hole, so that the first connecting part 211 and the second connecting part 221 are easy to process, and at the same time, the convenience of connecting the battery device 1 with the electric device body is improved.

[0154] Please refer to Figure 8 and Figure 10 , Figure 8 the schematic view of the second sub-wall provided by some embodiments of the present application, Figure 10 the schematic view of the second sub-wall provided by some embodiments of the present application. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along the first direction X. The plurality of second walls 22 includes two second sub-walls 223 arranged oppositely along the first direction X, and the two second sub-walls 223 are respectively connected to the two ends of the first wall 21 in the first direction X. The second connecting part 221 is arranged on the second sub-wall 223, and the number of the second connecting part 221 is a plurality, and the plurality of second connecting parts 221 are arranged at intervals along the second direction Y.

[0155] In some embodiments, in the second direction Y, the plurality of second connecting parts 221 are arranged at intervals, and the distance between the adjacent two second connecting parts 221 in the plurality of second connecting parts 221 can be the same or different.

[0156] In some embodiments, the second wall 22 can include second sub-walls 223 arranged oppositely along the first direction X, and the two second sub-walls 223 are respectively connected to the two ends of the first wall 21 in the first direction X, and one end of the second sub-wall 223 in the thickness direction Z of the first wall 21 is connected to the first wall 21.

[0157] In some embodiments, the second wall 22 can include two first sub-walls 222 oppositely arranged along the second direction Y, and the two first sub-walls 222 are respectively connected to two ends of the first wall 21 along the second direction Y. One end of one first sub-wall 222 along the first direction X is connected to one end of one second sub-wall 223 along the second direction Y, the other end of the one first sub-wall 222 along the first direction X is connected to one end of another second sub-wall 223 along the second direction Y, one end of the other first sub-wall 222 along the first direction X is connected to the other end of the one second sub-wall 223 along the second direction Y, and the other end of the other first sub-wall 222 along the first direction X is connected to the other end of the other second sub-wall 223 along the second direction Y. In this case, the first sub-wall 222 can have a larger surface area than the second sub-wall 223.

[0158] In some embodiments, the second connecting part 221 can be arranged only on the second sub-wall 223, or the second connecting part 221 can be arranged only on the first sub-wall 222.

[0159] In some embodiments, the second connecting part 221 can be arranged on the first sub-wall 222 and the second sub-wall 223.

[0160] In some embodiments, the second connecting part 221 can be arranged on the first sub-wall 222 and the second sub-wall 223.

[0161] In some embodiments, the second connecting part 221 can be arranged on the first sub-wall 222 and the second sub-wall 223.

[0162] Please refer to Figure 9 , Figure 9A schematic view of a second sub-wall is provided for some embodiments of the present application. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along a first direction X. The plurality of second walls 22 includes two second sub-walls 223 oppositely arranged along the first direction X, and the two second sub-walls 223 are respectively connected to two ends of the first wall 21 in the first direction X. The second connecting portion 221 is arranged on the second sub-wall 223, and the number of the second connecting portions 221 is a plurality, and the plurality of second connecting portions 221 are arranged in the thickness direction Z of the first wall.

[0163] In some embodiments, the plurality of second connecting portions 221 are arranged in the thickness direction Z of the first wall, and the distance between any two adjacent second connecting portions 221 in the plurality of second connecting portions 221 can be the same or different.

[0164] In some embodiments, the number of the second connecting portions 221 is a plurality, and the plurality of second connecting portions 221 are arranged in the thickness direction Z of the first wall on the second sub-wall 223. In the projection direction of the thickness direction Z of the first wall, the orthographic projection of the plurality of second connecting portions 221 can overlap, or the orthographic projection of a part of the plurality of second connecting portions 221 overlaps, the orthographic projection of another part of the plurality of second connecting portions 221 does not overlap, or the orthographic projection of the plurality of second connecting portions 221 does not overlap.

[0165] The technical scheme of the embodiments of the present application further improves the reliability of the installation of the battery device 1 by arranging a plurality of second connecting portions 221 spaced in the thickness direction Z of the first wall on the second sub-wall 223. At the same time, the second sub-wall 223 is connected to the two ends of the first wall 21 in the first direction X, and the thickness direction Z of the first wall is perpendicular to the first direction X, that is, the first connecting portion 211 and the second connecting portion 221 are arranged on the wall of the box body 20 in different directions, so that the battery device 1 is connected to the body of the electric device in different directions through the first connecting portion 211 and the second connecting portion 221, and the reliability of the installation of the battery device 1 is further improved.

[0166] Please refer to Figure 11 , Figure 11 A schematic view of a third sub-wall is provided for some embodiments of the present application. In some embodiments, the plurality of second walls 22 includes a third sub-wall 224, and the third sub-wall 224 is oppositely arranged with the first wall 21 in the thickness direction Z of the first wall. The second connecting portion 221 is arranged on the third sub-wall 224, and the number of the second connecting portions 221 is a plurality, and the plurality of second connecting portions 221 are arranged in the first direction X.

[0167] In some embodiments, the third sub-wall 224 and the first wall 21 can be oppositely arranged in the thickness direction Z of the first wall, and the thickness direction of the third sub-wall 224 can be parallel to the thickness direction Z of the first wall.

[0168] In some embodiments, the second wall 22 can include two first sub-walls 222 arranged opposite along the second direction Y and two second sub-walls 223 arranged opposite along the first direction X, one end of the first sub-wall 222 and the second sub-wall 223 being connected to the first wall 21 in the thickness direction Z of the first wall, and the other end being connected to a third sub-wall 224.

[0169] In some embodiments, the number of the second connecting portions 221 is multiple, and the multiple second connecting portions 221 can be arranged only on the third sub-wall 224, or the multiple second connecting portions 221 can be arranged only on the first sub-wall 222, or the multiple second connecting portions 221 can be arranged only on the second sub-wall 223, or the multiple second connecting portions 221 can be arranged on any two of the first sub-wall 222, the second sub-wall 223 and the third sub-wall 224, or a part of the multiple second connecting portions 221 can be arranged on the first sub-wall 222, another part of the multiple second connecting portions 221 can be arranged on the second sub-wall 223, and the other part of the multiple second connecting portions 221 can be arranged on the third sub-wall 224.

[0170] In some embodiments, the multiple second connecting portions 221 are arranged at intervals along the first direction X on the third sub-wall 224. Wherein, the multiple second connecting portions 221 can be overlapped in the orthographic projection along the first direction X, or a part of the multiple second connecting portions 221 can be overlapped in the orthographic projection, another part of the multiple second connecting portions 221 can not be overlapped in the orthographic projection, or none of the multiple second connecting portions 221 can be overlapped in the orthographic projection.

[0171] In some embodiments, the first wall 21 can be a bottom wall 212 of the box 20, and the third sub-wall 224 can be a top wall 225 of the box 20.

[0172] It should be noted that the third sub-wall 224 can be provided with multiple second connecting portions 221, and the multiple second connecting portions 221 can also be arranged at intervals along the second direction Y.

[0173] The technical scheme of the embodiments of the present application, the third sub-wall 224 is arranged opposite to the first wall 21 along the thickness direction Z of the first wall, and the second connecting portion 221 is arranged on the third sub-wall 224, that is, the first connecting portion 211 and the second connecting portion 221 are arranged at two ends of the box 20 in the thickness direction Z of the first wall, which further improves the reliability of the battery device 1 installation.

[0174] Please refer to Figure 12 and Figure 14 , Figure 12 the schematic diagram of the first wall provided by some embodiments of the present application, Figure 14A schematic view of the first wall is provided for some embodiments of the present application. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along a first direction X. The number of first connecting portions 211 is plural, and the plurality of first connecting portions 211 are arranged at intervals along the first direction X.

[0175] In some embodiments, the plurality of first connecting portions 211 are arranged at intervals along the first direction X, and the distance between any two adjacent first connecting portions 211 in the plurality of first connecting portions 211 can be the same or different.

[0176] In some embodiments, the plurality of first connecting portions 211 are arranged at intervals along the first direction X on the first wall 21. In a projection direction of the first direction X, the orthographic projection of the plurality of first connecting portions 211 can overlap, or the orthographic projection of a part of the plurality of first connecting portions 211 can overlap, the orthographic projection of another part of the plurality of first connecting portions 211 can not overlap, or the orthographic projection of the plurality of first connecting portions 211 can not overlap.

[0177] The technical solution of the embodiments of the present application further improves the reliability of the installation of the battery device 1 by arranging a plurality of first connecting portions 211 at intervals along the first direction X on the first wall 21.

[0178] Please refer to Figure 12 In some embodiments, along the first direction X, the distance between any two adjacent first connecting portions 211 is d3, and satisfies: 200mm≤d3≤400mm.

[0179] In some embodiments, along the first direction X, the distance between any two adjacent first connecting portions 211 is d3, and satisfies: 200mm≤d3≤400mm, that is, d3 can be any value or a value between any two values in 200mm, 250mm, 300mm, 350mm, and 400mm.

[0180] The technical solution of the embodiments of the present application satisfies the above condition for the distance between any two adjacent first connecting portions 211 along the first direction X. When d3≥200mm, the number of first connecting portions 211 can be smaller, improving the convenience of processing the first wall 21; when d3≤400mm, the distance between any two adjacent first connecting portions 211 is smaller, the size of the first connecting portion 211 along the first direction X can be larger, the connection area of the first connecting portion 211 and the power device body along the first direction X can be larger, which can improve the reliability of the connection between the first wall 21 and the power device body, and further improve the reliability of the installation of the battery device 1.

[0181] Please refer to Figure 13 , Figure 13A schematic view of the first wall is provided for other embodiments of the present application. In some embodiments, the first battery monomer assembly 10 includes a plurality of first battery monomers 11 arranged along a first direction X. The number of first connecting portions 211 is plural, and the plurality of first connecting portions 211 are spaced apart along a second direction Y, and the first direction X, the second direction Y and the thickness direction Z of the first wall are perpendicular to each other.

[0182] In some embodiments, in the second direction Y, the plurality of first connecting portions 211 are spaced apart, and the distance between any two adjacent first connecting portions 211 in the plurality of first connecting portions 211 can be the same or different.

[0183] In some embodiments, the plurality of first connecting portions 211 are spaced apart along the second direction Y on the first wall 21. In the second direction Y as the projection direction, the orthographic projection of the plurality of first connecting portions 211 can overlap, or the orthographic projection of a part of the plurality of first connecting portions 211 overlaps, the orthographic projection of another part of the plurality of first connecting portions 211 does not overlap, or the orthographic projection of the plurality of first connecting portions 211 does not overlap.

[0184] The technical scheme of the embodiments of the present application further improves the reliability of the installation of the battery device 1 by arranging a plurality of first connecting portions 211 spaced apart along the second direction Y on the first wall 21.

[0185] Please refer to Figure 13 In some embodiments, in the second direction Y, the distance between any two adjacent first connecting portions 211 is d4, and satisfies: 400mm≤d4≤600mm.

[0186] In some embodiments, in the second direction Y, the distance between any two adjacent first connecting portions 211 is d4, and satisfies: 400mm≤d4≤600mm, that is, d4 can be any value or any value between any two values of 400mm, 450mm, 500mm, 550mm and 600mm.

[0187] The technical scheme of the embodiments of the present application satisfies the above condition for the distance between any two adjacent first connecting portions 211 in the second direction Y. When d4≥400mm, the number of first connecting portions 211 can be smaller, improving the convenience of processing the first wall 21. When d4≤600mm, the distance between any two adjacent first connecting portions 211 is smaller, the size of the first connecting portion 211 in the second direction Y can be larger, the connection area of the first connecting portion 211 and the body of the electric device in the second direction Y can be larger, which can improve the reliability of the connection between the first wall 21 and the body of the electric device, and further improve the reliability of the installation of the battery device 1.

[0188] Please refer to Figure 2and refer to Figure 15 , Figure 15 This is a schematic diagram of the internal structure of a battery device provided in some embodiments of this application, wherein... Figure 15 Part of the casing wall is concealed within the casing. In some embodiments, the casing 20 includes a first sub-casing 24 and a second sub-casing 25, which are arranged opposite each other along the thickness direction Z of the first wall and are fastened together. The battery device 1 includes a bracket 30 and a second battery cell assembly 40, which are arranged along the thickness direction Z of the first wall. The bracket 30 is disposed within the casing 20. The first sub-casing 24 and the bracket 30 form a first receiving space 23, in which the first battery cell assembly 10 is received. The second sub-casing 25 and the bracket 30 form a second receiving space 26, in which the second battery cell assembly 40 is disposed.

[0189] In some embodiments, the second battery cell assembly 40 is housed within the housing 20, which protects the second battery cell assembly 40 and reduces the risk of damage to the second battery cell assembly 40.

[0190] In the battery device 1, the second battery cell assembly 40 may include multiple second battery cells 41. The multiple second battery cells 41 may be connected in series, parallel, or in a mixed manner. A mixed connection means that some of the multiple second battery cells 41 are connected in series and others in parallel. The battery device 1 may include one second battery cell assembly 40, or the battery device 1 may include multiple second battery cell assemblies 40, which may be connected in series, parallel, or in a mixed manner to form a whole and housed in the housing 20.

[0191] The second battery cell 41 can be a secondary battery or a primary battery; the second battery cell 41 can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited to these.

[0192] In some embodiments, the structures of the first sub-box 24 and the second sub-box 25 may be the same or different.

[0193] In some embodiments, the support 30 may be made of metal, such as copper or aluminum.

[0194] In some embodiments, the bracket 30 is disposed inside the housing 20, which can divide the internal space of the housing 20 into a first accommodating space 23 and a second accommodating space 26.

[0195] In some embodiments, the bracket 30 forms a first accommodating space 23 with the first sub-box 24, and the first battery monomer assembly 10 is accommodated in the first accommodating space 23. The bracket 30 forms a second accommodating space 26 with the second sub-box 25, and the second battery monomer assembly 40 is accommodated in the second accommodating space 26.

[0196] In some embodiments, the second battery monomer assembly 40 is located above the first battery monomer assembly 10, that is, the second sub-box 25 can be the upper box 20, and the first sub-box 24 can be the lower box 20.

[0197] In some embodiments, the bracket 30 can be bolted, welded, or the like to the box 20.

[0198] The technical scheme of the embodiments of the present application, the first sub-box 24 and the bracket 30 form the first accommodating space 23 to accommodate the first battery monomer assembly 10, and the second sub-box 25 and the bracket 30 form the second accommodating space 26 to accommodate the second battery monomer assembly 40, which facilitates the first battery monomer assembly 10 and the second battery monomer assembly 40 to be arranged in a stacked manner along the thickness direction Z of the first wall, thereby reducing the risk of interference between the first battery monomer assembly 10 and the second battery monomer assembly 40, and improving the reliability of the battery device 1.

[0199] Please refer to Figure 2 and Figure 15 In some embodiments, the box 20 includes a bottom wall 212 and a top wall 225 oppositely arranged along the thickness direction Z of the first wall, two first side walls 226 oppositely arranged along the second direction Y, two second side walls 227 oppositely arranged along the second direction Y, and two third side walls 228 oppositely arranged along the first direction X. The two first side walls 226 are arranged at both ends of the bottom wall 212 in the second direction Y to form the first sub-box 24, the two second side walls 227 are arranged at both ends of the top wall 225 in the second direction Y to form the second sub-box 25, the first sub-box 24 and the second sub-box 25 are fastened and the two ends in the first direction X form openings 27 respectively, and the two third side walls 228 respectively close the two openings 27. The thickness direction Z of the first wall, the first direction X and the second direction Y are perpendicular to each other, and the bottom wall 212 is the first wall 21.

[0200] In some embodiments, the lower end of the first side wall 226 in the thickness direction Z of the first wall is connected to the bottom wall 212, and the two first side walls 226 are arranged at both ends of the bottom wall 212 in the second direction Y to form the first sub-box 24, that is, the two ends of the first sub-box 24 in the first direction X are not closed.

[0201] In some embodiments, the upper end of the second side wall 227 in the thickness direction Z of the first wall is connected to the top wall 225, and two second side walls 227 are arranged at two ends of the top wall 225 in the second direction Y, forming a second sub-box 25, that is, the two ends of the second sub-box 25 in the first direction X are not closed.

[0202] When the first sub-box 24 and the second sub-box 25 are buckled, the top wall 225 and the bottom wall 212 are arranged opposite in the thickness direction Z of the first wall, one first side wall 226 is connected to one second side wall 227 in the thickness direction Z of the first wall, and the other first side wall 226 is connected to the other second side wall 227 in the thickness direction Z of the first wall, and the two ends of the box 20 in the first direction X form an opening 27. Among them, the first side wall 226 and the second side wall 227 can be connected by welding or bolted. One first side wall 226 and one second side wall 227 form a first sub-wall 222. Alternatively, the first side wall 226 is the first sub-wall 222.

[0203] In some embodiments, one third side wall 228 closes the opening 27 at one end of the box 20 in the first direction X, and the other third side wall 228 closes the opening 27 at the other end of the box 20 in the first direction X. The third side wall 228 can be a second sub-wall 223 of the second wall 22.

[0204] In some embodiments, the first wall 21 can be the bottom wall 212 of the box 20.

[0205] In some embodiments, the third sub-wall 224 can be the top wall 225 of the box 20.

[0206] The technical scheme of the embodiments of the present application sets the third side wall 228, which is convenient for installing connectors and other components such as explosion-proof valves, water cooling connectors, etc. on the third side wall 228, and facilitates the normal charging and discharging work of the battery device 1. And the third side wall 228 closes the opening 27, improving the sealing performance of the box 20.

[0207] The embodiments of the present application also provide a power utilization device, which comprises a power utilization device body and the battery device 1 of any of the above embodiments. The first connecting part 211 is connected to the power utilization device body, and the second connecting part 221 is connected to the power utilization device body.

[0208] In some embodiments, when the power utilization device is a vehicle, the body of the power utilization device can be a vehicle frame, the first connecting part 211 can be a first connecting hole, and the second connecting part 221 can be a second connecting hole. The vehicle frame is provided with connecting holes corresponding to the first connecting hole and the second connecting hole. When the first connecting part 211 and the second connecting part 221 are connected to the vehicle frame, the first connecting hole and the connecting hole on the vehicle frame can be connected by a bolt, and the second connecting hole and the connecting hole on the vehicle frame can be connected by a bolt, so as to realize the connection between the battery device 1 and the body of the power utilization device.

[0209] Please refer to Figure 2 、 Figure 3 、 Figure 4 、 Figure 11 and Figure 15 In some embodiments, the battery device 1 includes a first battery monomer assembly 10, a second battery monomer assembly 40, a box 20, and a support 30. The box 20 includes a first sub-box 24 and a second sub-box 25. The first sub-box 24 includes a bottom wall 212 and two first side walls 226, which are oppositely arranged along the second direction Y and are arranged at both ends of the bottom wall 212 in the second direction Y. The second sub-box 25 includes a top wall 225 and two second side walls 227, which are oppositely arranged along the second direction Y and are arranged at both ends of the top wall 225 in the second direction Y.

[0210] The first sub-box 24 and the second sub-box 25 are buckled to each other, and the bottom wall 212 and the top wall 225 are oppositely arranged in the thickness direction Z of the first wall, which is parallel to the direction of gravity. The end of the first side wall 226 away from the bottom wall 212 is connected to the end of the second side wall 227 away from the top wall 225, the first sub-box 24 and the second sub-box 25 form the box 20, and the two ends of the box 20 in the first direction X have openings 27.

[0211] The support 30 is connected with the two first side walls 226 to form a first containing space 23. The first battery monomer assembly 10 is arranged in the first containing space 23, and the bottom wall 212 supports the first battery monomer assembly 10.

[0212] The support 30 is connected with the two second side walls 227 to form a second containing space 26. The second battery monomer assembly 40 is arranged in the second containing space 26, and the support 30 supports the second battery monomer assembly 40.

[0213] The box 20 further includes two third side walls 228, which respectively close the openings 27 at both ends of the box 20 in the first direction X.

[0214] In some embodiments, the bottom wall 212 is provided with a plurality of first connecting holes which are arranged at intervals along the first direction X and are used for connecting the electrical device body.

[0215] In some embodiments, the first side wall 226 is provided with a plurality of second connecting holes which are arranged at intervals along the first direction X and are used for connecting the electrical device body.

[0216] The technical scheme of the embodiments of the present application sets the plurality of first connecting holes on the bottom wall 212, sets the plurality of second connecting holes on the first side wall 226, and connects the first connecting holes and the second connecting holes to the electrical device body, so that the battery device 1 can be connected to the electrical device body at different positions, which facilitates dispersing the connection stress of the battery device 1 and the electrical device body, thereby reducing the risk of affecting the use of the battery device 1 due to the shaking or connection failure of the battery device 1 when the battery device 1 is installed on the electrical device body, and facilitating improving the reliability of the installation of the battery device 1.

[0217] Although the present application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the present application, and equivalent components can be substituted therefor. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present 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 by, The application relates to a battery pack, comprising: a first battery cell assembly; a box body comprising a first wall and a plurality of second walls, the first wall and the plurality of second walls enclosing a first containing space for containing the first battery cell assembly, the first wall being used for supporting the first battery cell assembly; wherein the first wall is provided with a first connecting part for connecting a power consumption device body, and at least one of the second walls is provided with a second connecting part for connecting the power consumption device body.

2. The battery device according to claim 1, characterized by The first battery cell assembly comprises a plurality of battery cells arranged along a first direction; the plurality of second walls comprises two first sub-walls oppositely arranged along a second direction, and the two first sub-walls are respectively connected to two ends of the first wall in the second direction; the second connecting part is arranged on the first sub-wall, and the number of the second connecting parts is plural, and the plurality of second connecting parts are arranged at intervals along the first direction; wherein the first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

3. The battery device of claim 2, wherein In the first direction, the distance between two adjacent second connecting parts is d1, and 200mm<=d1<=600mm is satisfied.

4. The battery device of claim 3, wherein 350mm<=d1<=400mm.

5. The battery device of claim 1, wherein The first battery cell assembly comprises a plurality of battery cells arranged along a first direction; the plurality of second walls comprises two first sub-walls oppositely arranged along a second direction, and the two first sub-walls are respectively connected to two ends of the first wall in the second direction; the second connecting part is arranged on the first sub-wall, and the number of the second connecting parts is plural, and the plurality of second connecting parts are arranged at intervals along the thickness direction of the first wall; wherein the first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

6. The battery device of claim 5, wherein In the thickness direction of the first wall, the distance between two adjacent second connecting parts is d2, and 50mm<=d2<=400mm is satisfied.

7. The battery device of claim 6, wherein 120mm<=d2<=200mm.

8. The battery device according to any one of claims 2 to 7, characterized by, The first sub-wall is internally provided with a cavity.

9. The battery device of claim 8, wherein, The first sub-wall is provided with a partition beam, and two ends of the partition beam in the second direction are connected to the inner wall of the cavity; in the second direction, the second connecting part extends from the surface of the first sub-wall away from the first battery cell assembly to the partition beam.

10. The battery device of claim 1, wherein The first connecting part is a first connecting hole, and the second connecting part is a second connecting hole.

11. The battery device of claim 1, wherein The first battery cell assembly comprises a plurality of battery cells arranged along a first direction; the plurality of second walls comprises two second sub-walls oppositely arranged along the first direction, and the two second sub-walls are respectively connected to two ends of the first wall in the first direction; the second connecting part is arranged on the second sub-wall, and the number of the second connecting parts is plural, and the plurality of second connecting parts are arranged at intervals along a second direction.

12. The battery device of claim 1, wherein, The first battery cell assembly comprises a plurality of battery cells arranged along a first direction; The plurality of second walls comprises two second sub-walls oppositely arranged along the first direction, and the two second sub-walls are respectively connected to two ends of the first wall in the first direction; The second connecting portions are arranged on the second sub-walls, and the number of the second connecting portions is plural, and the plural second connecting portions are arranged in the thickness direction of the first wall.

13. The battery device of claim 1, wherein, The plurality of second walls comprises a third sub-wall, and the third sub-wall is oppositely arranged with the first wall in the thickness direction of the first wall; The second connecting portions are arranged on the third sub-wall, and the number of the second connecting portions is plural, and the plural second connecting portions are arranged in the first direction.

14. The battery device of claim 1, wherein, The first battery cell assembly comprises a plurality of battery cells, and the plurality of battery cells are arranged in the first direction; The number of the first connecting portions is plural, and the plural first connecting portions are arranged in the first direction.

15. The battery device of claim 14, wherein, In the first direction, the distance between two adjacent first connecting portions is d3, and 200mm≤d3≤400mm is satisfied.

16. The battery device of claim 1, wherein, The first battery cell assembly comprises a plurality of battery cells, and the plurality of battery cells are arranged in the first direction; The number of the first connecting portions is plural, and the plural first connecting portions are arranged in the second direction, and the first direction, the second direction and the thickness direction of the first wall are perpendicular to each other.

17. The battery device of claim 16, wherein, In the second direction, the distance between two adjacent first connecting portions is d4, and 400mm≤d4≤600mm is satisfied.

18. The battery device of claim 1, wherein, The box comprises a first sub-box and a second sub-box, the first sub-box and the second sub-box are oppositely arranged in the thickness direction of the first wall, and the first sub-box and the second sub-box are buckled; The battery device comprises a support and a second battery cell assembly, the first battery cell assembly and the second battery cell assembly are arranged in the thickness direction of the first wall, the support is arranged in the box, the first sub-box and the support form the first containing space, the first battery cell assembly is contained in the first containing space, the second sub-box and the support form the second containing space, and the second battery cell assembly is arranged in the second containing space.

19. The battery device of claim 18, wherein, The box comprises a bottom wall and a top wall oppositely arranged in the thickness direction of the first wall, two first side walls oppositely arranged in a second direction, two second side walls oppositely arranged in the second direction, and two third side walls oppositely arranged in a first direction; The two first side walls are arranged at two ends of the bottom wall in the second direction to form the first sub-box, the two second side walls are arranged at two ends of the top wall in the second direction to form the second sub-box, the first sub-box and the second sub-box are buckled and two ends thereof in the first direction form two openings respectively, the two third side walls respectively close the two openings, the thickness direction of the first wall, the first direction and the second direction are perpendicular to each other, and the bottom wall is the first wall.

20. An electrical device, comprising: Comprise: An electric device body; An electric device body; The battery device according to any one of claims 1 to 19, wherein the first connection portion connects the power consuming device body, and the second connection portion connects the power consuming device body.

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