Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and relates to the field of batteries, the battery device comprises a box body, a mounting bin is formed in the box body, and a plurality of battery monomers are accommodated in the mounting bin; the first air bag component is arranged on the box body, at least one side of the mounting bin is provided with the first air bag component, the first air bag component is located outside the mounting bin, and the first air bag component is configured to be selectively inflated with air. Therefore, by arranging the first airbag component, when the vehicle is collided, the first airbag component is inflated with gas and can absorb impact force, and compared with the prior art, the stress of the battery device can be reduced, so that the stress of the single battery in the battery device can be reduced, and the deformation and damage risk of the single battery can be reduced; therefore, the reliability of the vehicle is improved.

Description

Technical Field

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

[0002] In the related art, a battery device is installed on an electrical device (for example, a vehicle chassis, a ship, etc.). Taking the battery device installed on the chassis of a vehicle as an example, when the vehicle collides, the chassis is easily deformed and squeezes the battery device, causing the battery cells in the battery device to deform and be damaged, etc., thereby reducing the reliability of the battery device and thus reducing the reliability of the vehicle. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a battery device that reduces the risk of deformation and damage of battery cells in the battery device when a vehicle collides, improves the reliability of the battery device, and thus improves the reliability of the vehicle.

[0004] The present application further proposes a vehicle.

[0005] In a first aspect, an embodiment of the present application provides a battery device, comprising:

[0006] A box body, wherein a mounting chamber is formed in the box body, and the mounting chamber accommodates a plurality of battery cells;

[0007] A first airbag component is disposed in the box body, the first airbag component is disposed on at least one side of the installation bin, and the first airbag component is located outside the installation bin, and the first airbag component is configured to be selectively inflated with gas;

[0008] The box body includes a plurality of side beams, and the plurality of side beams are connected to enclose the installation bin, at least one of the side beams is provided with the first airbag component, and at least one of the first airbag components is arranged in the corresponding side beam.

[0009] In the above technical solution, by providing a first airbag component, when a vehicle collides, the first airbag component is filled with gas and can absorb the impact force. Compared with the prior art, the force on the battery device can be reduced, thereby reducing the force on the battery cells in the battery device, reducing the risk of deformation and damage of the battery cells, and improving the reliability of the battery device, thereby improving the reliability of the vehicle, which is conducive to solving the reliability problem of the battery device when the vehicle is driving at high speed.

[0010] By having a box body including a plurality of side beams, the arrangement of the installation compartment is realized. By having a first airbag component provided by at least one side beam, the first airbag component can be reasonably arranged in a position. When a vehicle collides, it is beneficial for the first airbag component to absorb energy. In addition, the battery device can have an energy absorbing effect in at least one direction where the first airbag component is provided, thereby facilitating the improvement of the collision safety of the battery device in at least one direction, further improving the reliability of the battery device, and thus further improving the reliability of the vehicle, which is more beneficial for solving the reliability problem of the battery device when the vehicle is traveling at high speeds.

[0011] By disposing at least one first airbag component in the corresponding side beam, when the vehicle does not collide, the first airbag component can be hidden inside the corresponding side beam, which is beneficial to reducing the volume of the battery device and making the battery device structure more compact, thereby helping to reduce the assembly space of the battery device; and when the vehicle collides, the first airbag component can be detonated to inflate the airbag structure, thereby meeting the requirement of reducing the force on the battery cells in the battery device.

[0012] In some embodiments, a side beam having the first airbag component disposed therein forms an installation space, and the first airbag component is disposed in the installation space.

[0013] In the above technical solution, an installation space is formed by the side beam with the first airbag component inside, so that the effect of arranging the first airbag component inside the corresponding side beam can be achieved, and the first airbag component is detonated to inflate the airbag structure. When the inflated airbag structure is located in the side beam, the energy absorption capacity of the corresponding side beam can be improved. In addition, when the first airbag component is detonated to inflate the airbag structure, the airbag structure moves out of the corresponding side beam to expose at least part of the corresponding side beam. In the event of a vehicle collision, the airbag structure can be subjected to force before the corresponding side beam, which is beneficial to reducing the force on the box body, reducing the risk of deformation of the corresponding side beam due to force, and further reducing the force on the battery cells in the battery device, which is beneficial to improving the safety of the battery device.

[0014] In some embodiments, an airbag pop-out hole connected to the installation space is formed on the outer wall of the installation space, and the airbag pop-out hole corresponds to the corresponding first airbag component. When the first airbag component is inflated, at least part of the first airbag component moves to the outside of the installation space through the airbag pop-out hole.

[0015] In the above technical solution, an airbag pop-up hole connected to the installation space is formed through the outer side wall of the installation space, and the airbag pop-up hole is arranged corresponding to the corresponding first airbag component. When the first airbag component is inflated, the airbag structure of the first airbag component is convenient to move out of the corresponding side beam through the airbag pop-up hole, which is beneficial to increase the speed of the airbag structure of the first airbag component moving out of the corresponding side beam. When the vehicle collides, it is beneficial for the airbag structure of the first airbag component to move out of the corresponding side beam to participate in energy absorption, which is more beneficial to reducing the force on the box body and the force on the battery cells in the battery device.

[0016] In some embodiments, along the length direction of the side beam where the first airbag component is provided, at least a portion of the first airbag component is located in a middle region of the corresponding side beam.

[0017] In the above technical solution, by at least partially setting the first airbag component in the middle area of ​​the corresponding side beam, after the airbag structure of the first airbag component is inflated, the airbag structure of the first airbag component can cover the middle area of ​​the side beam. Taking the front side beam of the installation compartment provided with the first airbag component as an example, when the vehicle collides head-on, rear-end or offset, the airbag structure of the first airbag component can absorb the collision force to a greater extent after being hit, which can further reduce the force on the battery device, thereby further reducing the force on the battery cells in the battery device, further reducing the risk of deformation and damage of the battery cells, further improving the reliability of the battery device, thereby further improving the reliability of the vehicle, and being more conducive to solving the reliability problem of the battery device when the vehicle is driving at high speed.

[0018] In some embodiments, along the arrangement direction of the corresponding side beams and the installation bins, when the first airbag component is inflated with gas, the orthographic projection of the first airbag component and the orthographic projection of the corresponding side beam have an overlapping area.

[0019] In the above technical solution, along the arrangement direction of the corresponding side beam and the installation bin, when the first airbag component is inflated with gas, the orthographic projection of the first airbag component and the orthographic projection of the corresponding side beam have an overlapping area, and the side beam can reliably support the airbag structure of the corresponding first airbag component, which is conducive to improving the supporting effect of the side beam on the airbag structure of the corresponding first airbag component and improving the stability of the airbag structure of the first airbag component when it is hit by an external force. In addition, the airbag structure of the first airbag component can abut the corresponding side beam when it is hit by an external force, which is conducive to improving the force transmission performance between the airbag structure and the corresponding side beam, and can transmit part of the collision force to the side beam. The collision force can be transmitted to other structural parts of the vehicle along the side beam and the chassis of the vehicle, so that the collision force is dispersed and the risk of concentrated force is reduced. In addition, when the vehicle collides, the airbag structure can be subjected to force before the corresponding side beam, which is more conducive to reducing the force on the side beam, further reducing the risk of deformation of the corresponding side beam under force, and further reducing the force on the battery cells in the battery device.

[0020] In some embodiments, along the arrangement direction of the corresponding side beams and the installation bin, when the first airbag component is inflated with gas, the area of ​​the orthographic projection of the first airbag component is S1, and the area of ​​the overlapping area of ​​the orthographic projection of the first airbag component and the orthographic projection of the corresponding side beam is S2, satisfying: 10%≤S2 / S1≤100%.

[0021] In the above technical scheme, through 10%≤S2 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the airbag structure and the orthographic projection of the corresponding side beam is appropriate, and when the airbag structure is subjected to collision force, it is more conducive to improving the force transmission performance between the airbag structure and the corresponding side beam, and the side beam can more reliably support the airbag structure of the corresponding first airbag component, which is more conducive to improving the supporting effect of the side beam on the airbag structure of the corresponding first airbag component, further improving the stability of the airbag structure of the first airbag component when subjected to external force collision, and, when the vehicle collides, it is beneficial for the airbag structure to be subjected to force before the corresponding side beam, thereby being more conducive to reducing the force on the side beam, further reducing the risk of deformation of the corresponding side beam under force, and further reducing the force on the battery cells in the battery device.

[0022] In some embodiments, when the first airbag component is inflated with gas, along the height direction of the battery device, the height dimension of the first airbag component is greater than or equal to the height dimension of the corresponding side beam.

[0023] In the above technical scheme, when the first airbag component is inflated with gas, the height dimension of the airbag structure of the first airbag component is greater than or equal to the height dimension of the corresponding side beam, which is conducive to making the orthographic projection of the airbag structure of the first airbag component and the orthographic projection of the corresponding side beam have an overlapping area along the arrangement direction of the corresponding side beam and the installation bin. The side beam can more reliably support the airbag structure of the corresponding first airbag component, further improve the stability of the airbag structure of the first airbag component when it is hit by external force, and the airbag structure can reliably block the corresponding side beam. When the vehicle collides, it is more conducive to the airbag structure to be stressed before the corresponding side beam, thereby more conducive to reducing the stress on the side beam, further reducing the risk of deformation of the corresponding side beam under stress, and further reducing the stress on the battery cells in the battery device.

[0024] In some embodiments, when the first airbag component is inflated with gas, along the length direction of the corresponding side beam, the length dimension of the first airbag component is less than or equal to the length dimension of the corresponding side beam.

[0025] In the above technical scheme, when the first airbag component is inflated with gas, along the length direction of the corresponding side beam, through the length dimension of the first airbag component being less than or equal to the length dimension of the corresponding side beam, along the arrangement direction of the corresponding side beam and the installation bin, it is beneficial to make the airbag structure cover the corresponding side beam, and it is beneficial to increase the overlapping area of ​​the orthographic projection of the airbag structure and the orthographic projection of the corresponding side beam. The side beam can more reliably support the airbag structure of the corresponding first airbag component, further improve the stability of the airbag structure of the first airbag component when subjected to external force collision, and the airbag structure can more reliably block the corresponding side beam. When the vehicle collides, it is more beneficial for the airbag structure to be subjected to force before the corresponding side beam, thereby more beneficial to reduce the force on the side beam, further reduce the risk of deformation of the corresponding side beam under force, and further reduce the force on the battery cells in the battery device.

[0026] In some embodiments, the multiple side beams include: two first side beams and two second side beams, the two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery device, the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery device, and at least one of the two first side beams is provided with a first airbag component.

[0027] In the above technical solution, by setting two first side beams and two second side beams, the effect of forming an installation bin can be achieved, and the structure of the box can be simplified, which is convenient for the production and manufacturing of the box. In addition, by providing a first airbag component through at least one of the two first side beams, after the airbag structure of the first airbag component is inflated, the airbag structure can absorb at least part of the collision force, and the collision force not absorbed by the airbag structure can be transmitted to the first side beam, and the collision force is transmitted to the two second side beams through the first side beam. The collision force can be transmitted to the box and other structural parts of the vehicle along the side beams, so that the collision force is dispersed, and the risk of concentrated force is reduced, which can further reduce the force on the battery cells in the battery device, further reduce the risk of squeezing the battery cells in the battery device, further reduce the risk of deformation and damage of the battery cells in the battery device, further improve the reliability of the battery device, and thus further improve the reliability of the vehicle.

[0028] In some embodiments, a partition beam is provided in the installation bin to separate the installation bin into an energy bin and a buffer bin. The energy bin accommodates a plurality of battery cells, and a buffer bin is provided between at least one first airbag component and the energy bin.

[0029] In the above technical solution, a buffer chamber is provided between at least one first airbag component and the energy chamber. The buffer chamber is a collapse space and has a buffering effect. When the corresponding side beam provided with the first airbag component is deformed by the collision force, the corresponding side beam can collapse and deform toward the buffer chamber, thereby reducing the risk of the side beam deformation squeezing the battery cell, further reducing the risk of deformation and damage of the battery cell, further improving the reliability of the battery device, thereby further improving the reliability of the vehicle, and being more conducive to solving the reliability problem of the battery device when the vehicle is driving at high speed.

[0030] In some embodiments, the energy compartment and the buffer compartment are arranged along the length direction of the battery device.

[0031] In the above technical solution, the energy bin and the buffer bin are arranged along the length direction of the battery device. When the battery device is subjected to a collision force or an offset collision force along the length direction of the battery device, the buffer bin can effectively provide a collapse space for the deformation of the corresponding side beam, effectively reducing the risk of the side beam deformation squeezing the battery cell, further reducing the risk of deformation and damage of the battery cell, further improving the reliability of the battery device, thereby further improving the reliability of the vehicle, and being more conducive to solving the reliability problem of the battery device when the vehicle is driving at high speed, thereby making the arrangement of the energy bin and the buffer bin reasonable.

[0032] In some embodiments, the multiple side beams include: two first side beams and two second side beams, the two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery device, the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery device, a partition beam extends along the width direction of the battery device and is connected between the two second side beams, the partition beam is spaced apart from the two first side beams to form an energy bin between the partition beam and one of the first side beams, and a buffer bin is formed between the partition beam and another first side beam.

[0033] In the above technical solution, the partition beam extends along the width direction of the battery device and is connected between the two second side beams. The partition beam is separated from the two first side beams. An energy bin can be formed between the partition beam and one of the first side beams, and a buffer bin can be formed between the partition beam and the other first side beam, thereby achieving the effect of arranging the energy bin and the buffer bin along the length direction of the battery device.

[0034] In some embodiments, the battery device further includes: an energy absorbing structure, wherein the energy absorbing structure is disposed in the buffer compartment.

[0035] In the above technical solution, by arranging the energy absorbing structure in the buffer bin, the energy absorbing structure has an energy absorbing function, which can make the box have a multi-level energy absorbing effect. After the airbag structure of the first airbag component is hit, the airbag structure of the first airbag component can absorb at least part of the collision force, and the collision force not absorbed by the airbag structure of the first airbag component can be transmitted to the corresponding side beam, and the corresponding side beam can squeeze the energy absorbing structure after deformation. The energy absorbing structure further absorbs the collision force and reduces the squeezing of the battery cell during the collision. It can further reduce the force on the battery cell in the battery device, further reduce the deformation and damage risk of the battery cell in the battery device, further improve the reliability of the battery device, and thus further improve the reliability of the vehicle.

[0036] In some embodiments, the energy absorbing structure includes at least one of an energy absorbing box, a cushion frame, a spring, and a second airbag component.

[0037] In the above technical solution, the energy absorbing structure includes at least one of an energy absorbing box, a buffer frame, a spring and a second airbag component, so that the energy absorbing structure can have energy absorbing performance, so that the energy absorbing structure meets the working requirements, and the energy absorbing effect of the energy absorbing structure can be improved. After the energy absorbing structure is hit, the energy absorbing structure can absorb more collision force, which can further reduce the force on the battery cell.

[0038] In some embodiments, the energy absorbing structure is fixedly connected to at least one of the separator beam and the side beam.

[0039] In the above technical solution, by fixing the energy absorbing structure to at least one of the partition beam and the side beam, the energy absorbing structure can be fixed in the buffer bin, reducing the risk of movement of the energy absorbing structure in the buffer bin, thereby making the energy absorbing structure reliably correspond to the corresponding first airbag component. When the airbag structure of the first airbag component is subjected to collision force, the energy absorbing structure can absorb energy easily.

[0040] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery device.

[0041] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0043] Figure 1 is a schematic diagram of a vehicle according to an embodiment of the present application;

[0044] Figure 2 is a schematic diagram of a battery device according to an embodiment of the present application;

[0045] Figure 3 is an exploded view of a battery device according to an embodiment of the present application;

[0046] Figure 4 is a schematic diagram of a first airbag component of a battery device according to an embodiment of the present application after being inflated with gas;

[0047] Figure 5 1 is a top view of the first airbag component of the battery device according to the embodiment of the present application after being inflated with gas.

[0048] Reference numerals:

[0049] Battery device 100;

[0050] Box 10;

[0051] Installation chamber 11;

[0052] Side beam 12; installation space 121; outer side wall 122; airbag ejection hole 123; first side beam 124; second side beam 125;

[0053] Partition beam 13; energy bin 131; buffer bin 132;

[0054] A first box 14; a second box 15;

[0055] Battery cell 20; first airbag component 30; airbag structure 31; energy absorbing structure 40; energy absorbing beam 50;

[0056] Vehicle 200 ; controller 201 ; motor 202 . DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0059] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0062] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0063] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0064] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0065] The term “plurality” used in this application refers to two or more (including two).

[0066] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0067] The battery cell can be 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 storage battery, etc., which is not limited in the embodiments of the present application.

[0068] The battery cell can be cylindrical, flat, rectangular or other shapes, and the present application embodiment does not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the present application embodiment does not limit this.

[0069] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0070] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0071] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0072] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0073] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0074] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0075] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space (i.e., an installation compartment) inside the box to accommodate the battery cell assembly. Enclosed here means covered or closed, which may be sealed or unsealed. The first box may be a top cover or a bottom plate.

[0076] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0077] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0078] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery cells, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0079] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of an anode pole piece, a cathode pole piece and a separator. The battery cell mainly relies on the movement of metal ions between the anode pole piece and the cathode pole piece to work. The anode pole piece includes an anode current collector and an anode active material layer, the anode active material layer is coated on the surface of the anode current collector, the anode current collector not coated with the anode active material layer protrudes from the anode current collector coated with the anode active material layer, and the anode current collector not coated with the anode active material layer serves as the anode pole ear. Taking lithium-ion batteries as an example, the material of the anode current collector can be aluminum, and the anode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The cathode pole piece includes a cathode current collector and a cathode active material layer, the cathode active material layer is coated on the surface of the cathode current collector, the cathode current collector not coated with the cathode active material layer protrudes from the cathode current collector coated with the cathode active material layer, and the cathode current collector not coated with the cathode active material layer serves as the cathode pole ear. The material of the cathode current collector can be copper, and the cathode active material can be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of anode tabs is multiple and they are stacked together, and the number of cathode tabs is multiple and they are stacked together.

[0080] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0081] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, battery devices, as the power source of electric vehicles, play an irreplaceable and important role. As the core components of new energy vehicles, battery devices have high requirements in terms of reliability.

[0082] The battery device is installed on the chassis of the vehicle. When the vehicle collides, the chassis is easily deformed and squeezes the battery device, which will cause the battery cells in the battery device to deform and be damaged, thereby reducing the reliability of the battery device and thus reducing the reliability of the vehicle.

[0083] Based on the above considerations, in order to solve the problems of deformation and damage of battery cells in the battery when the vehicle collides, after in-depth research, a battery device is designed, including: a box body, a mounting compartment is formed in the box body, and the mounting compartment accommodates a plurality of battery cells; a first airbag component, the first airbag component is arranged in the box body, at least one side of the mounting compartment is provided with the first airbag component, and the first airbag component is located outside the mounting compartment, and the first airbag component is configured to be selectively filled with gas. When the vehicle collides, the first airbag component is filled with gas, and the first airbag component can absorb the impact force. Compared with the prior art, the force on the battery device can be reduced, thereby reducing the force on the battery cells in the battery device, reducing the risk of deformation and damage of the battery cells, and improving the reliability of the battery device, thereby improving the reliability of the vehicle.

[0084] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 200 provided for some embodiments of the present application. The vehicle 200 may be a fuel vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. The battery device 100 is installed on the chassis of the vehicle 200. The battery device 100 can be used to power the vehicle 200, for example, the battery device 100 can be used as an operating power source for the vehicle 200. The vehicle 200 may also include a controller 201 and a motor 202, and the controller 201 is used to control the battery device 100 to power the motor 202, for example, for the starting, navigation, and working power requirements of the vehicle 200 during driving.

[0085] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 200 , but also serve as a driving power source for the vehicle 200 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200 .

[0086] Reference below Figure 1-Figure 5 The battery device 100 according to the embodiment of the present application is described, and the battery device 100 can be installed in the chassis of the vehicle 200 .

[0087] like Figure 2-Figure 5As shown, the battery device 100 according to the embodiment of the present application includes: a box body 10, a mounting compartment 11 is formed in the box body 10, and the mounting compartment 11 accommodates a plurality of battery cells 20; a first airbag component 30, the first airbag component 30 is arranged in the box body 10, and the first airbag component 30 is provided on at least one side of the mounting compartment 11, and the first airbag component 30 is located outside the mounting compartment 11, and the first airbag component 30 is configured to be selectively filled with gas.

[0088] When the battery device 100 is installed on the vehicle 200, the length direction of the battery device 100 is parallel to the driving direction of the vehicle 200, and the width direction of the battery device 100 is parallel to the width direction of the vehicle 200. Figure 2 As shown, the length direction of the battery device 100 is Figure 2 The X direction of the battery device 100 is Figure 2 in the Y direction.

[0089] The battery device 100 includes: a box body 10 and a first airbag component 30. An installation compartment 11 is formed in the box body 10, and the installation compartment 11 is defined by the box body 10. A plurality of battery cells 20 are installed in the installation compartment 11. The first airbag component 30 may have an airbag structure 31. When the first airbag component 30 is inflated with gas, the airbag structure 31 is inflated with gas and the volume increases. When the first airbag component 30 is not inflated with gas, the airbag structure 31 is not inflated with gas, and the airbag structure 31 may be accommodated in the box body 10. The first airbag component 30 may be the same as or similar to the safety airbag structure of the vehicle 200, as long as the airbag structure 31 is inflated with gas and the volume increases when the first airbag component 30 is inflated with gas.

[0090] As an example, the first airbag component 30 includes a sensor, a control module, a gas generator and an airbag structure 31. The sensor is used to receive the collision signal. The control module is responsible for processing the collision signal and determining whether to trigger the first airbag component 30 to inflate the airbag structure 31. The gas generator generates a large amount of gas in a very short time to fill the airbag structure 31. The airbag structure 31 is used to protect the battery device 100 after being inflated. The sensor can be set as a collision sensor, which is used to detect the acceleration change during the collision and transmit the signal to the control module. The sensor can include a trigger collision sensor and a protection collision sensor. The trigger collision sensor is used to detect the collision intensity and trigger the airbag structure 31 to inflate. The protection collision sensor is used to prevent the airbag structure 31 from being inflated by mistake. The control module is responsible for processing the sensor signal and determining whether it is necessary to trigger the airbag structure 31 to inflate. The control module can be installed on the center console of the cockpit. The gas generator generates a large amount of gas in a very short time (about 30 milliseconds) to fill the airbag structure 31. The airbag structure 31 can be made of polyethylene terephthalate fabric with good crack resistance, which can be quickly inflated and deployed during a collision, absorb impact energy, and protect the battery device 100. Specifically, when the vehicle 200 collides, the sensor first receives the collision signal. If the collision reaches the specified intensity, the sensor will send a signal to the control module. After the control module processes the collision signal, if the control module decides to trigger the airbag, the control module will send a start signal to the gas generator. The gas generator generates a large amount of gas in a very short time to fill the airbag structure 31 and quickly deploy it. After the airbag structure 31 is hit, the impact force on the battery device 100 is reduced.

[0091] The first airbag component 30 is arranged on the box body 10. The first airbag component 30 can be installed on the box body 10 by bolts, the first airbag component 30 can also be bonded to the box body 10 by glue, and the first airbag component 30 can also be indirectly installed on the box body 10 by a universal adapter. However, the present application is not limited to this. The first airbag component 30 can also be fixed to the box body 10 by other methods, as long as the first airbag component 30 is fixed to the box body 10. The first airbag component 30 is arranged on at least one side of the installation compartment 11. It should be noted that along the circumferential direction of the battery device 100, the battery device 100 has multiple side edges, and the first airbag component 30 is correspondingly arranged at at least one side edge. As an example, the battery device 100 has a front side, a rear side, a left side and a right side, and the first airbag component 30 is arranged on the front side of the installation compartment 11. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and the first airbag component 30 is arranged on the rear side of the installation compartment 11. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and the left side of the installation compartment 11 is provided with a first airbag component 30. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and the right side of the installation compartment 11 is provided with a first airbag component 30. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and the front side, rear side, left side and right side of the installation compartment 11 are all provided with a first airbag component 30. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and at least two of the front side, rear side, left side and right side of the installation compartment 11 are provided with a first airbag component 30. As another example, the battery device 100 has a front side, a rear side, a left side and a right side, and at least three of the front side, rear side, left side and right side of the installation compartment 11 are provided with a first airbag component 30. This application is described by taking the front side of the installation compartment 11 as an example in which the first airbag component 30 is provided.

[0092] The first airbag component 30 is configured to be selectively inflated with gas, and the first airbag component 30 can be selectively inflated with gas according to the detection signal of the collision sensor. When the impact of the vehicle 200 does not reach a specified intensity, the first airbag component 30 is not inflated with gas. When the impact of the vehicle 200 reaches a specified intensity, the first airbag component 30 is inflated with gas, so that the airbag structure 31 of the first airbag component 30 is inflated. When the vehicle 200 is moving forward, the vehicle 200 is stopped, or the vehicle 200 is moving backward, when the front of the vehicle 200 is hit, for example: when the vehicle 200 is moving forward at a high speed (for example, a driving speed of more than 100 kph) and collides, the first airbag component 30 is triggered to inflate the airbag structure 31, and the airbag structure 31 can absorb at least part of the collision force. Compared with the prior art, the force on the battery device 100 can be reduced, thereby reducing the force on the battery cells 20 in the battery device 100, reducing the risk of squeezing the battery cells 20, reducing the risk of deformation and damage of the battery cells 20 in the battery device 100, and improving the reliability of the battery device 100, thereby improving the reliability of the vehicle 200, which is conducive to solving the reliability problem of the battery device 100 when the vehicle 200 is traveling at high speed.

[0093] In the above technical solution, a first airbag component 30 is provided on at least one side of the mounting compartment 11. When the collision of the vehicle 200 reaches a specified intensity, the first airbag component 30 is triggered to inflate the airbag structure 31. The airbag structure 31 can absorb at least part of the collision force. Compared with the prior art, the force on the battery device 100 can be reduced, thereby reducing the force on the battery cells 20 in the battery device 100, reducing the risk of squeezing the battery cells 20, reducing the risk of deformation and damage of the battery cells 20 in the battery device 100, and improving the reliability of the battery device 100, thereby improving the reliability of the vehicle 200, which is beneficial to solving the reliability problem of the battery device 100 when the vehicle 200 is traveling at high speed.

[0094] According to some embodiments of the present application, Figure 3 and Figure 5 As shown, the box body 10 includes a plurality of side beams 12 , and the plurality of side beams 12 are connected to enclose a mounting chamber 11 , and at least one side beam 12 is provided with a first airbag component 30 .

[0095] Among them, the box body 10 may include a plurality of side beams 12, which are the side beams 12 of the box body 10. The box body 10 may include two, three, four, five, six, etc. side beams 12, and the plurality of side beams 12 are sequentially connected and enclosed to form an installation bin 11, and an installation bin 11 for installing the battery cell 20 is formed between the plurality of side beams 12. The present application is described by taking the box body 10 including four side beams 12 as an example, and the four side beams 12 are respectively the front side beam 12, the rear side beam 12, the left side beam 12 and the right side beam 12 of the box body 10. At least one side beam 12 is provided with a first airbag component 30, and it can also be understood that one side beam 12 may be provided with a first airbag component 30, or a plurality of side beams 12 may be provided with a first airbag component 30, or each side beam 12 may be provided with a first airbag component 30. The first airbag component 30 is fixedly connected to the corresponding side beam 12. The first airbag component 30 can be installed on the corresponding side beam 12 by bolts, or by gluing to the corresponding side beam 12, or by using a universal adapter to indirectly install on the corresponding side beam 12. The first airbag component 30 is provided on at least one of the front, rear, left and right sides of the installation bin 11. The first airbag component 30 can be provided inside the corresponding side beam 12, or outside the corresponding side beam 12. The present application is described by taking the example that the first airbag component 30 is provided on the front side of the installation bin 11.

[0096] In the above technical solution, the box body 10 includes multiple side beams 12 to realize the arrangement of the installation compartment 11. The first airbag component 30 is provided by at least one side beam 12, so that the first airbag component 30 can be reasonably set. When the vehicle 200 collides, it is beneficial for the first airbag component 30 to absorb energy, and the battery device 100 can have an energy absorption effect in at least one direction where the first airbag component 30 is provided, which is beneficial to improve the collision safety of the battery device 100 in at least one direction, further improve the reliability of the battery device 100, thereby further improving the reliability of the vehicle 200, and more beneficial to solving the reliability problem of the battery device 100 when the vehicle 200 is driving at high speed.

[0097] According to some embodiments of the present application, at least one first airbag component 30 is disposed in a corresponding side beam 12 .

[0098] When the battery device 100 is provided with one, the first airbag component 30 is provided inside the corresponding side beam 12. When the battery device 100 is provided with multiple first airbag components 30, one first airbag component 30 may be provided inside the corresponding side beam 12, multiple first airbag components 30 may be provided inside the corresponding side beam 12, or all first airbag components 30 may be provided inside the corresponding side beam 12. As an example, after the airbag structure 31 of the first airbag component 30 provided inside the corresponding side beam 12 is inflated with gas, the airbag structure 31 of the first airbag component 30 may be located inside the corresponding side beam 12. As another example, after the airbag structure 31 of the first airbag component 30 provided inside the corresponding side beam 12 is inflated with gas, at least part of the airbag structure 31 of the first airbag component 30 may be located outside the corresponding side beam 12.

[0099] In the above technical solution, at least one first airbag component 30 is arranged in the corresponding side beam 12. When the vehicle 200 does not collide, the first airbag component 30 can be hidden inside the corresponding side beam 12, which is beneficial to reducing the volume of the battery device 100 and making the structure of the battery device 100 more compact, thereby helping to reduce the assembly space of the battery device 100. Moreover, when the vehicle 200 collides, the first airbag component 30 can be detonated to inflate the airbag structure 31, thereby meeting the requirement of reducing the force on the battery cells 20 in the battery device 100.

[0100] According to some embodiments of the present application, Figure 2 As shown, the side beam 12 in which the first airbag component 30 is disposed is formed with an installation space 121 , and the first airbag component 30 is disposed in the installation space 121 .

[0101] As an example, an installation space 121 may be formed in the side beam 12 having the first airbag component 30 disposed therein, and the first airbag component 30 is disposed in the installation space 121. The first airbag component 30 is detonated to inflate the airbag structure 31. When the inflated airbag structure 31 is located in the side beam 12, the energy absorption capacity of the corresponding side beam 12 may be improved. As another example, an open end may be formed at the end of the installation space 121 away from the installation bin 11. When the first airbag component 30 is detonated to inflate the airbag structure 31, the airbag structure 31 may be moved out of the corresponding side beam 12 through the open end of the installation space 121. At this time, at least part of the airbag structure 31 is exposed from the corresponding side beam 12. When the vehicle 200 collides, the airbag structure 31 may be subjected to force prior to the corresponding side beam 12, thereby facilitating the reduction of the force on the box body 10 and reducing the risk of deformation of the corresponding side beam 12.

[0102] In the above technical solution, the side beam 12 with the first airbag component 30 inside is provided with an installation space 121, so that the first airbag component 30 can be arranged inside the corresponding side beam 12, and when the inflated airbag structure 31 is located in the side beam 12, the energy absorption capacity of the corresponding side beam 12 can be improved. In addition, after the airbag structure 31 is inflated, the airbag structure 31 moves out of the corresponding side beam 12 so that at least part of the corresponding side beam 12 is exposed. In the event of a collision of the vehicle 200, the airbag structure 31 can be subjected to force before the corresponding side beam 12, which is beneficial to reducing the force on the box body 10, reducing the risk of deformation of the corresponding side beam 12, and further reducing the force on the battery cells 20 in the battery device 100, which is beneficial to improving the safety of the battery device 100.

[0103] According to some embodiments of the present application, Figure 2 As shown, the outer wall 122 of the installation space 121 is formed with an airbag pop-up hole 123 connected to the installation space 121, and the airbag pop-up hole 123 corresponds to the corresponding first airbag component 30. When the first airbag component 30 is inflated, at least part of the first airbag component 30 moves to the outside of the installation space 121 through the airbag pop-up hole 123.

[0104] Among them, along the arrangement direction of the side beam 12 and the installation bin 11 forming the installation space 121, the side beam 12 forming the installation space 121 can have an inner wall close to the installation bin 11 and an outer wall 122 away from the installation bin 11, the outer wall 122 of the side beam 12 is the outer wall 122 of the installation space 121, the inner wall of the side beam 12 is the inner wall of the installation space 121, the installation space 121 is located between the inner wall and the outer wall 122, the outer wall 122 of the side beam 12 is formed with an airbag pop-up hole 123 connected to the installation space 121, and the airbag pop-up hole 123 is constructed as the open end of the installation space 121 in the above embodiment. Along the arrangement direction of the side beam 12 and the installation bin 11 where the installation space 121 is formed, the airbag pop-up hole 123 is arranged opposite to the corresponding first airbag component 30. When the first airbag component 30 is inflated, it is beneficial for the airbag structure 31 of the first airbag component 30 to move out of the corresponding side beam 12 through the airbag pop-up hole 123.

[0105] In the above technical solution, an airbag pop-up hole 123 connected to the installation space 121 is formed through the outer wall 122 of the installation space 121, and the airbag pop-up hole 123 is arranged corresponding to the corresponding first airbag component 30. When the first airbag component 30 is inflated, the airbag structure 31 of the first airbag component 30 is convenient to move out of the corresponding side beam 12 through the airbag pop-up hole 123, which is beneficial to increase the speed of the airbag structure 31 of the first airbag component 30 moving out of the corresponding side beam 12. When the vehicle 200 collides, it is beneficial for the airbag structure 31 of the first airbag component 30 to move out of the corresponding side beam 12 to participate in energy absorption, which is more beneficial to reducing the force on the box body 10 and the force on the battery cells 20 in the battery device 100.

[0106] According to some embodiments of the present application, Figure 2 As shown, along the length direction of the side beam 12 where the first airbag component 30 is provided, at least a portion of the first airbag component 30 is located in the middle area of ​​the corresponding side beam 12 .

[0107] Among them, along the length direction of the side beam 12 provided with the first airbag component 30, it can also be understood that along the extending direction of the side beam 12 provided with the first airbag component 30, the side beam 12 provided with the first airbag component 30 has a midline, at least part of the first airbag component 30 is located in the middle area of ​​the corresponding side beam 12, the first airbag component 30 can be partially located in the middle area of ​​the corresponding side beam 12, or the first airbag component 30 can be located entirely in the middle area of ​​the corresponding side beam 12. Further, the airbag structure 31 of the first airbag component 30 can be partially located in the middle area of ​​the corresponding side beam 12, or the airbag structure 31 of the first airbag component 30 can be located entirely in the middle area of ​​the corresponding side beam 12. The middle area refers to the area covered by a certain distance on both sides of the midline of the side beam 12 along the length direction of the side beam 12. As an example, the middle area refers to the area covered by a length of 50 cm on both sides of the midline of the side beam 12 along the length direction of the side beam 12.

[0108] When the side beam 12 provided with the first airbag component 30 extends along the width direction of the battery device 100, at least part of the first airbag component 30 is located in the middle area of ​​the battery device 100 along the width direction, and further, the airbag structure 31 of the first airbag component 30 is at least partly located in the middle area of ​​the battery device 100 along the width direction. When the side beam 12 provided with the first airbag component 30 extends along the length direction of the battery device 100, at least part of the first airbag component 30 is located in the middle area of ​​the battery device 100 along the length direction, and further, the airbag structure 31 of the first airbag component 30 is at least partly located in the middle area of ​​the battery device 100 along the length direction. This application is described by taking the example that the front side beam 12 of the installation compartment 11 is provided with the first airbag component 30.

[0109] In the above technical scheme, by at least partially setting the first airbag component 30 in the middle area of ​​the corresponding side beam 12, after the airbag structure 31 of the first airbag component 30 is inflated, the airbag structure 31 of the first airbag component 30 can cover the middle area of ​​the side beam 12. Taking the front side beam 12 of the installation compartment 11 provided with the first airbag component 30 as an example, when the vehicle 200 is hit head-on, rear-end or offset, it is beneficial for the airbag structure 31 of the first airbag component 30 to absorb the collision force to a large extent after being hit, which can further reduce the force on the battery device 100, thereby further reducing the force on the battery cell 20 in the battery device 100, further reducing the deformation and damage risks of the battery cell 20, further improving the reliability of the battery device 100, and thus further improving the reliability of the vehicle 200, which is more conducive to solving the reliability problem of the battery device 100 when the vehicle 200 is driving at high speed.

[0110] According to some embodiments of the present application, Figure 2 and Figure 3 As shown, along the arrangement direction of the corresponding side beams 12 and the installation bins 11 , when the first airbag component 30 is inflated with gas, the orthographic projection of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area.

[0111] Among them, along the arrangement direction of the corresponding side beams 12 and the installation bins 11, when the first airbag component 30 is inflated with gas, the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area, the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 may overlap in part, or the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 may overlap completely, and at this time, the orthographic projection area of ​​the airbag structure 31 may be less than or equal to the orthographic projection area of ​​the corresponding side beam 12. When the side beam 12 provided with the first airbag component 30 extends along the width direction of the battery device 100, the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area along the length direction of the battery device 100. When the side beam 12 provided with the first airbag component 30 extends along the length direction of the battery device 100 , the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area along the width direction of the battery device 100 .

[0112] In the above technical solution, along the arrangement direction of the corresponding side beam 12 and the installation chamber 11, when the first airbag component 30 is inflated with gas, the orthographic projection of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area, and the side beam 12 can reliably support the airbag structure 31 of the corresponding first airbag component 30, which is conducive to improving the supporting effect of the side beam 12 on the airbag structure 31 of the corresponding first airbag component 30, and improving the stability of the airbag structure 31 of the first airbag component 30 when it is hit by an external force. In addition, the airbag structure 31 of the first airbag component 30 can abut the corresponding side beam 12 when it is hit by an external force, which is conducive to improving the force transmission performance between the airbag structure 31 and the corresponding side beam 12, and can transmit part of the collision force to the side beam 12. The collision force can be transmitted to other structural parts of the vehicle 200 along the side beam 12 and the chassis of the vehicle 200, so that the collision force is dispersed and the risk of concentrated force is reduced. In addition, when the vehicle 200 collides, the airbag structure 31 can be stressed before the corresponding side beam 12 , which is more conducive to reducing the stress on the side beam 12 , further reducing the risk of deformation of the corresponding side beam 12 , and further reducing the stress on the battery cells 20 in the battery device 100 .

[0113] According to some embodiments of the present application, along the arrangement direction of the corresponding side beams 12 and the installation bin 11, when the first airbag component 30 is inflated with gas, the area of ​​the orthographic projection of the first airbag component 30 is S1, and the area of ​​the overlapping area of ​​the orthographic projection of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 is S2, satisfying: 10%≤S2 / S1≤100%.

[0114] Among them, along the arrangement direction of the corresponding side beam 12 and the installation bin 11, when the airbag structure 31 of the first airbag component 30 is inflated with gas, the area of ​​the orthographic projection of the first airbag component 30 is S1, and the area of ​​the overlapping area of ​​the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 is S2. The unit of the area of ​​the orthographic projection of the airbag structure 31 of the first airbag component 30 can be reasonably selected and designed according to actual conditions, and the unit of the area of ​​the overlapping area of ​​the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 can be reasonably selected and designed according to actual conditions. S2 / S1 can be 10%, 11%, 15%, 20%, 25%, 30%, 40%, 43%, 45%, 50%, 55%, 60%, 61%, 70%, 80%, 90%, 93%, 95%, 100%, etc.

[0115] When S2 / S1 is less than 10%, the area of ​​the overlapping region between the orthographic projection of the airbag structure 31 and the orthographic projection of the corresponding side beam 12 is small. When the airbag structure 31 is subjected to collision force, the force transmission performance between the airbag structure 31 and the corresponding side beam 12 is poor, the supporting effect of the side beam 12 on the corresponding airbag structure 31 is poor, the stability of the airbag structure 31 when subjected to external force collision is poor, and when the vehicle 200 collides, the side beam 12 may be subjected to force before the corresponding airbag structure 31. Therefore, by satisfying 10%≤S2 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the airbag structure 31 and the orthographic projection of the corresponding side beam 12 is appropriate, and when the airbag structure 31 is subjected to collision force, it is more conducive to improving the force transmission performance between the airbag structure 31 and the corresponding side beam 12, and the side beam 12 can more reliably support the airbag structure 31 of the corresponding first airbag component 30, which is more conducive to improving the supporting effect of the side beam 12 on the airbag structure 31 of the corresponding first airbag component 30, further improving the stability of the airbag structure 31 of the first airbag component 30 when subjected to external force collision, and, when the vehicle 200 collides, it is conducive to the airbag structure 31 being subjected to force first rather than the corresponding side beam 12, thereby being more conducive to reducing the force on the side beam 12, further reducing the risk of deformation of the corresponding side beam 12 under force, and further reducing the force on the battery cells 20 in the battery device 100.

[0116] In the above technical scheme, by 10%≤S2 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the airbag structure 31 and the orthographic projection of the corresponding side beam 12 is appropriate. When the airbag structure 31 is subjected to collision force, it is more conducive to improving the force transmission performance between the airbag structure 31 and the corresponding side beam 12. The side beam 12 can more reliably support the airbag structure 31 of the corresponding first airbag component 30, which is more conducive to improving the supporting effect of the side beam 12 on the airbag structure 31 of the corresponding first airbag component 30, further improving the stability of the airbag structure 31 of the first airbag component 30 when subjected to external force collision, and, when the vehicle 200 collides, it is conducive to the airbag structure 31 being subjected to force first before the corresponding side beam 12, thereby being more conducive to reducing the force on the side beam 12, further reducing the risk of deformation of the corresponding side beam 12 under force, and further reducing the force on the battery cell 20 in the battery device 100.

[0117] According to some embodiments of the present application, Figure 3 and Figure 4 As shown, when the first airbag component 30 is inflated with gas, along the height direction of the battery device 100 , the height dimension of the first airbag component 30 is greater than or equal to the height dimension of the corresponding side beam 12 .

[0118] When the airbag structure 31 of the first airbag component 30 is inflated with gas, along the height direction of the battery device 100, the height direction of the battery device 100 refers to Figure 4In the Z direction, the height dimension of the airbag structure 31 of the first airbag component 30 is greater than the height dimension of the corresponding side beam 12, or the height dimension of the airbag structure 31 of the first airbag component 30 is equal to the height dimension of the corresponding side beam 12. When the height dimension of the airbag structure 31 of the first airbag component 30 is greater than the height dimension of the corresponding side beam 12, the upper end height of the airbag structure 31 is higher than the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 is lower than the lower surface height of the corresponding side beam 12, or the upper end height of the airbag structure 31 is higher than the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 is higher than the lower surface height of the corresponding side beam 12, or the upper end height of the airbag structure 31 is lower than the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 is lower than the lower surface height of the corresponding side beam 12. When the height dimension of the airbag structure 31 of the first airbag component 30 is equal to the height dimension of the corresponding side beam 12, the upper end height of the airbag structure 31 can be equal to the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 can be equal to the lower surface height of the corresponding side beam 12, or the upper end height of the airbag structure 31 is higher than the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 is higher than the lower surface height of the corresponding side beam 12, or the upper end height of the airbag structure 31 is lower than the upper surface height of the corresponding side beam 12, and the lower end height of the airbag structure 31 is lower than the lower surface height of the corresponding side beam 12.

[0119] In the above technical scheme, when the first airbag component 30 is inflated with gas, the height dimension of the airbag structure 31 of the first airbag component 30 is greater than or equal to the height dimension of the corresponding side beam 12, which is conducive to making the orthographic projection of the airbag structure 31 of the first airbag component 30 and the orthographic projection of the corresponding side beam 12 have an overlapping area along the arrangement direction of the corresponding side beam 12 and the installation bin 11. The side beam 12 can more reliably support the airbag structure 31 of the corresponding first airbag component 30, further improving the stability of the airbag structure 31 of the first airbag component 30 when it is hit by external force, and the airbag structure 31 can reliably block the corresponding side beam 12. When the vehicle 200 collides, it is more conducive to the airbag structure 31 to be subjected to force before the corresponding side beam 12, thereby more conducive to reducing the force on the side beam 12, further reducing the risk of deformation of the corresponding side beam 12 under force, and further reducing the force on the battery cell 20 in the battery device 100.

[0120] According to some embodiments of the present application, Figure 3 and Figure 4 As shown, when the first airbag component 30 is inflated with gas, along the length direction of the corresponding side beam 12 , the length dimension of the first airbag component 30 is less than or equal to the length dimension of the corresponding side beam 12 .

[0121] Wherein, when the airbag structure 31 of the first airbag component 30 is inflated with gas, along the length direction of the corresponding side beam 12, the length dimension of the airbag structure 31 of the first airbag component 30 is smaller than the length dimension of the corresponding side beam 12, the length dimension of the airbag structure 31 may be greater than half of the length dimension of the corresponding side beam 12, or the length dimension of the first airbag component 30 is equal to the length dimension of the corresponding side beam 12. When the length dimension of the airbag structure 31 of the first airbag component 30 is smaller than the length dimension of the corresponding side beam 12, along the length direction of the corresponding side beam 12, the airbag structure 31 may be located between the two ends of the corresponding side beam 12. When the length dimension of the airbag structure 31 of the first airbag component 30 is equal to the length dimension of the corresponding side beam 12, along the length direction of the corresponding side beam 12, the two ends of the airbag structure 31 may be aligned with the two ends of the corresponding side beam 12 respectively.

[0122] In the above technical scheme, when the airbag structure 31 of the first airbag component 30 is inflated with gas, along the length direction of the corresponding side beam 12, the length dimension of the first airbag component 30 is less than or equal to the length dimension of the corresponding side beam 12, and along the arrangement direction of the corresponding side beam 12 and the installation bin 11, it is beneficial to make the airbag structure 31 cover the corresponding side beam 12, and it is beneficial to increase the overlapping area of ​​the orthographic projection of the airbag structure 31 and the orthographic projection of the corresponding side beam 12. The side beam 12 can more reliably support the airbag structure 31 of the corresponding first airbag component 30, further improve the stability of the airbag structure 31 of the first airbag component 30 when it is hit by external force, and the airbag structure 31 can more reliably block the corresponding side beam 12. When the vehicle 200 collides, it is more beneficial for the airbag structure 31 to be stressed before the corresponding side beam 12, thereby more beneficial to reduce the stress on the side beam 12, further reduce the risk of deformation of the corresponding side beam 12 under stress, and further reduce the stress on the battery cell 20 in the battery device 100.

[0123] According to some embodiments of the present application, Figure 3 and Figure 5 As shown, the multiple side beams 12 include: two first side beams 124 and two second side beams 125, the two first side beams 124 are arranged opposite to each other and spaced apart along the length direction of the battery device 100, the two second side beams 125 are arranged opposite to each other and spaced apart along the width direction of the battery device 100, and at least one of the two first side beams 124 is provided with a first airbag component 30.

[0124] The plurality of side beams 12 include: two first side beams 124 and two second side beams 125, the two first side beams 124 both extend along the width direction of the battery device 100, and the two second side beams 125 both extend along the length direction of the battery device 100. The two first side beams 124 are arranged oppositely and at intervals along the length direction of the battery device 100, and the interval between the two first side beams 124 can be reasonably designed according to the size of the installation bin 11, and along the length direction of the battery device 100, the orthographic projections of the two first side beams 124 can have an overlapping area. The two second side beams 125 are arranged oppositely and at intervals along the width direction of the battery device 100, and the interval between the two second side beams 125 can be reasonably designed according to the size of the installation bin 11, and along the width direction of the battery device 100, the orthographic projections of the two second side beams 125 can have an overlapping area. The second two first side beams 124 and the two second side beams 125 can be the outer frame of the box body 10. Each first side beam 124 is fixedly connected to the two second side beams 125. The first side beam 124 can be welded to the second side beam 125, or the first side beam 124 can be connected to the second side beam 125 by bolts. At least one of the two first side beams 124 is provided with a first airbag component 30. It can be understood that the first side beam 124 located in the front can be provided with the first airbag component 30, the first side beam 124 located in the rear can be provided with the first airbag component 30, or both first side beams 124 can be provided with the first airbag component 30. The side beam 12 provided with the first airbag component 30 can be provided with a plurality of first airbag components 30, and the plurality of first airbag components 30 can be arranged in sequence and spaced apart along the length direction of the corresponding side beam 12. The present application is described by taking the first side beam 124 located in the front as an example in which the first airbag component 30 is provided.

[0125] In the above technical solution, by providing two first side beams 124 and two second side beams 125, the effect of forming the installation chamber 11 can be achieved, and the structure of the box body 10 can be simplified, which is convenient for manufacturing the box body 10. In addition, by providing the first airbag component 30 at least one of the two first side beams 124, after the airbag structure 31 of the first airbag component 30 is inflated, the airbag structure 31 can absorb at least part of the collision force, and the collision force not absorbed by the airbag structure 31 can be transmitted to the first side beam 124, and the collision force is transmitted to the two second side beams 125 through the first side beam 124. The collision force can be transmitted to the box body 10 and other structural parts of the vehicle 200 along the side beam 12, so that the collision force is dispersed, and the risk of concentrated force is reduced, which can further reduce the force on the battery cell 20 in the battery device 100, further reduce the risk of squeezing the battery cell 20 in the battery device 100, further reduce the risk of deformation and damage of the battery cell 20 in the battery device 100, further improve the reliability of the battery device 100, and further improve the reliability of the vehicle 200.

[0126] According to some embodiments of the present application, Figure 3 and Figure 5 As shown, a partition beam 13 is provided in the installation bin 11 to separate the installation bin 11 into an energy bin 131 and a buffer bin 132 . The energy bin 131 accommodates a plurality of battery cells 20 , and a buffer bin 132 is provided between at least one first airbag component 30 and the energy bin 131 .

[0127] Among them, a partition beam 13 may be provided in the installation bin 11, and the partition beam 13 may separate the installation bin 11 into an energy bin 131 and a buffer bin 132. The energy bin 131 and the buffer bin 132 are adjacent, and a plurality of battery cells 20 are arranged in the energy bin 131. There is at least one buffer bin 132, and a buffer bin 132 is provided between at least one first airbag component 30 and the energy bin 131. As an example, when there is one buffer bin 132, a buffer bin 132 is provided between a first airbag component 30 and the energy bin 131. As another example, when there are multiple buffer bins 132, multiple buffer bins 132 are all located between a first airbag component 30 and the energy bin 131. As another example, when there are multiple buffer bins 132, there are multiple first airbag components 30, and multiple buffer bins 132 are respectively located between multiple first airbag components 30 and the energy bin 131, and multiple buffer bins 132 and multiple first airbag components 30 are provided in a one-to-one correspondence. As another example, when there are multiple buffer bins 132, there are multiple first airbag components 30, and multiple buffer bins 132 are respectively located between multiple first airbag components 30 and energy bins 131, and multiple buffer bins 132 are arranged between at least one first airbag component 30 and energy bin 131. This application is described by taking the example that one first airbag component 30 is arranged, and one buffer bin 132 is arranged between the first airbag component 30 and the energy bin 131. It should be noted that the buffer bin 132 is defined by the partition beam 13 and multiple side beams 12, and the shape of the buffer bin 132 can be reasonably selected and designed according to actual conditions, and is not specifically limited here. The shape of the partition beam 13 can be specifically designed according to the shape of the buffer bin 132.

[0128] In the above technical solution, a buffer bin 132 is provided between at least one first airbag component 30 and an energy bin 131. The buffer bin 132 is a collapse space, and the buffer bin 132 has a buffering effect. When the corresponding side beam 12 provided with the first airbag component 30 is deformed by the collision force, the corresponding side beam 12 can collapse and deform toward the buffer bin 132, thereby reducing the risk of the side beam 12 deforming and squeezing the battery cell 20, further reducing the risk of deformation and damage of the battery cell 20, further improving the reliability of the battery device 100, thereby further improving the reliability of the vehicle 200, and being more conducive to solving the reliability problem of the battery device 100 when the vehicle 200 is traveling at high speed.

[0129] According to some embodiments of the present application, Figure 3 and Figure 5 As shown, the energy compartment 131 and the buffer compartment 132 are arranged along the length direction of the battery device 100 .

[0130] The partition beam 13 may extend along the width direction of the battery device 100, and the two ends of the partition beam 13 are fixedly connected to the corresponding side beams 12, respectively, and the partition beam 13 is spaced apart from the side beam 12 located at the front side and the side beam 12 located at the rear side. A buffer bin 132 is formed between the partition beam 13 and the side beam 12 located at the front side, and an energy bin 131 is formed between the partition beam 13 and the side beam 12 located at the rear side. Alternatively, a buffer bin 132 is formed between the partition beam 13 and the side beam 12 located at the rear side, and an energy bin 131 is formed between the partition beam 13 and the side beam 12 located at the front side. When buffer bins 132 are provided on both sides of the energy bin 131 along the length direction of the battery device 100, there may be two partition beams 13, and the two partition beams 13 are arranged spaced apart along the length direction of the battery device 100, an energy bin 131 is formed between the two partition beams 13, a buffer bin 132 is formed between one partition beam 13 and the side beam 12 located on the front side, and a buffer bin 132 is formed between the other partition beam 13 and the side beam 12 located on the rear side.

[0131] Taking the example of multiple side beams 12 including two first side beams 124 and two second side beams 125, the two ends of the partition beam 13 are respectively fixedly connected to the two second side beams 125, and the partition beam 13 is spaced apart from the two first side beams 124. When the first side beam 124 located at the front side is provided with the first airbag component 30, the partition beam 13 is spaced apart from the first side beam 124 located at the front side to form a buffer bin 132, and the partition beam 13 is spaced apart from the first side beam 124 located at the rear side to form an energy bin 131. When the first side beam 124 located at the rear side is provided with the first airbag component 30, the partition beam 13 is spaced apart from the first side beam 124 located at the rear side to form a buffer bin 132, and the partition beam 13 is spaced apart from the first side beam 124 located at the front side to form an energy bin 131. When both first side beams 124 are provided with the first airbag component 30, there can be two partition beams 13, and the two partition beams 13 are arranged spaced apart along the length direction of the battery device 100, and an energy bin 131 is formed between the two partition beams 13, a buffer bin 132 is formed between one partition beam 13 and the first side beam 124 located on the front side, and a buffer bin 132 is formed between the other partition beam 13 and the first side beam 124 located on the rear side.

[0132] In the above technical solution, the energy bin 131 and the buffer bin 132 are arranged along the length direction of the battery device 100. When the battery device 100 is subjected to a collision force or an offset collision force along the length direction of the battery device 100, the buffer bin 132 can effectively provide a collapse space for the deformation of the corresponding side beam 12, thereby effectively reducing the risk of the side beam 12 deforming and squeezing the battery cell 20, further reducing the risk of deformation and damage of the battery cell 20, further improving the reliability of the battery device 100, thereby further improving the reliability of the vehicle 200, and being more conducive to solving the reliability problem of the battery device 100 when the vehicle 200 is driving at high speed, thereby making the arrangement of the energy bin 131 and the buffer bin 132 reasonable.

[0133] According to some embodiments of the present application, Figure 3 and Figure 5 As shown, the multiple side beams 12 include: two first side beams 124 and two second side beams 125, the two first side beams 124 are arranged opposite to each other and spaced apart along the length direction of the battery device 100, the two second side beams 125 are arranged opposite to each other and spaced apart along the width direction of the battery device 100, the partition beam 13 extends along the width direction of the battery device 100 and is connected between the two second side beams 125, the partition beam 13 is spaced apart from the two first side beams 124, so that an energy bin 131 is formed between the partition beam 13 and one of the first side beams 124, and a buffer bin 132 is formed between the partition beam 13 and another first side beam 124.

[0134] The plurality of side beams 12 may include two first side beams 124 and two second side beams 125, the two first side beams 124 both extend along the width direction of the battery device 100, and the two second side beams 125 both extend along the length direction of the battery device 100. The two first side beams 124 are arranged oppositely and at intervals along the length direction of the battery device 100, and the interval between the two first side beams 124 can be reasonably designed according to the size of the installation bin 11, and along the length direction of the battery device 100, the orthographic projections of the two first side beams 124 can have an overlapping area. The two second side beams 125 are arranged oppositely and at intervals along the width direction of the battery device 100, and the interval between the two second side beams 125 can be reasonably designed according to the size of the installation bin 11, and along the width direction of the battery device 100, the orthographic projections of the two second side beams 125 can have an overlapping area. The second two first side beams 124 and the two second side beams 125 can be the outer frame of the box body 10. Each first side beam 124 is fixedly connected to the two second side beams 125. The first side beam 124 can be welded to the second side beam 125, or the first side beam 124 can be connected to the second side beam 125 by bolts. At least one of the two first side beams 124 is provided with a first airbag component 30. The partition beam 13 extends along the width direction of the battery device 100, and the two ends of the partition beam 13 are respectively fixedly connected to the two second side beams 125. Along the length direction of the battery device 100, the partition beam 13 is spaced apart from the two first side beams 124. An energy bin 131 can be formed between the partition beam 13 and one of the first side beams 124, and a buffer bin 132 can be formed between the partition beam 13 and another first side beam 124. As an example, the first side beam 124 located at the front side is provided with the first airbag component 30, the energy bin 131 is formed between the partition beam 13 and the first side beam 124 located at the rear side, and the buffer bin 132 is formed between the partition beam 13 and the first side beam 124 located at the front side. As another example, the first side beam 124 at the rear side is provided with a first airbag component 30, an energy bin 131 is formed between the partition beam 13 and the first side beam 124 at the front side, and a buffer bin 132 is formed between the partition beam 13 and the first side beam 124 at the rear side.

[0135] In the above technical solution, the partition beam 13 extends along the width direction of the battery device 100 and is connected between the two second side beams 125. The partition beam 13 is separated from the two first side beams 124. An energy bin 131 can be formed between the partition beam 13 and one of the first side beams 124, and a buffer bin 132 can also be formed between the partition beam 13 and the other first side beam 124, thereby achieving the effect of arranging the energy bin 131 and the buffer bin 132 along the length direction of the battery device 100.

[0136] According to some embodiments of the present application, Figure 3 and Figure 5As shown, the battery device 100 further includes an energy absorbing structure 40 , which is disposed in the buffer compartment 132 .

[0137] The battery device 100 may further include an energy absorbing structure 40, which is disposed in the buffer bin 132. The energy absorbing structure 40 may be fixedly connected to the partition beam 13, the energy absorbing structure 40 may also be fixedly connected to at least one side beam 12, or the energy absorbing structure 40 may be fixedly connected to both the partition beam 13 and at least one side beam 12. The energy absorbing structure 40 has an energy absorbing function. The energy absorbing structure 40 may include an energy absorbing box, an energy absorbing space, a buffer frame, etc. Along the arrangement direction of the energy bin 131 and the buffer bin 132, the orthographic projection of the energy absorbing structure 40 and the orthographic projection of the partition beam 13 have an overlapping area, or the orthographic projection of the energy absorbing structure 40 and the orthographic projection of the corresponding side beam 12 have an overlapping area, or the orthographic projection of the energy absorbing structure 40 and the orthographic projection of the partition beam 13 and the orthographic projection of the corresponding side beam 12 all have overlapping areas. Further, along the arrangement direction of the energy bin 131 and the buffer bin 132, the energy absorbing structure 40 is located between the first airbag component 30 and the energy bin 131.

[0138] In the above technical solution, by arranging the energy absorbing structure 40 in the buffer bin 132, the energy absorbing structure 40 has an energy absorbing function, which can make the box body 10 have a multi-level energy absorbing effect. After the airbag structure 31 of the first airbag component 30 is hit, the airbag structure 31 of the first airbag component 30 can absorb at least part of the collision force, and the collision force not absorbed by the airbag structure 31 of the first airbag component 30 can be transmitted to the corresponding side beam 12. The corresponding side beam 12 can squeeze the energy absorbing structure 40 after deformation. The energy absorbing structure 40 further absorbs the collision force and reduces the squeezing of the battery cell 20 during the collision. It can further reduce the force on the battery cell 20 in the battery device 100, further reduce the deformation and damage risks of the battery cell 20 in the battery device 100, further improve the reliability of the battery device 100, and thus further improve the reliability of the vehicle 200.

[0139] According to some embodiments of the present application, the energy absorbing structure 40 includes at least one of an energy absorbing box, a buffer frame, a spring, and a second airbag component.

[0140] Among them, the energy absorbing structure 40 may include at least one of the energy absorbing box, the buffer frame, the spring and the second airbag component, that is, the energy absorbing structure 40 may include one of the energy absorbing box, the buffer frame, the spring and the second airbag component, or the energy absorbing structure 40 may include any two of the energy absorbing box, the buffer frame, the spring and the second airbag component, or the energy absorbing structure 40 may include any three of the energy absorbing box, the buffer frame, the spring and the second airbag component, or the energy absorbing structure 40 may include any four of the energy absorbing box, the buffer frame, the spring and the second airbag component, or the energy absorbing structure 40 may include the energy absorbing box, the buffer frame, the spring and the second airbag component.

[0141] According to some embodiments of the present application, the energy absorption box may have a hollow cavity, and the hollow cavity may penetrate the energy absorption box along the length direction of the battery device 100. There may be multiple hollow cavities, and the multiple hollow cavities may be parallel to each other. The cross-sectional shape of the hollow cavity may be square, rectangular, circular, rhombus, polygonal, and the like. The energy absorption box material may be made of a high-ductility aluminum alloy material. The cross-sectional shape of the hollow cavity may be square. The cross-sectional shape of the hollow cavity may also be rectangular. The cross-sectional shape of the hollow cavity may also be circular. The cross-sectional shape of the hollow cavity may also be a regular hexagon. The cross-sectional shape of at least part of the hollow cavity may also be a rhombus.

[0142] According to some embodiments of the present application, the buffer frame encloses a buffer cavity. The buffer cavity is enclosed by the buffer frame, in other words, the buffer frame defines the buffer cavity. As an example, the buffer cavity may be located inside the buffer frame. As another example, the buffer cavity is formed with at least one open end. The buffer frame may be a separately arranged frame structure. The buffer frame may also have at least a portion of its structure formed by the box body 10. As an example, the buffer frame is composed of a first side beam 124, two second side beams 125, and a partition beam 13. The first side beam 124 and the partition beam 13 are arranged opposite and spaced apart along the length direction of the battery device 100. The first side beam 124 and the partition beam 13 are both connected between the two second side beams 125, so that the first side beam 124, part of the second side beam 125, and the partition beam 13 enclose a buffer cavity.

[0143] According to some embodiments of the present application, the energy absorbing structure 40 is configured as a second airbag component, and the structure of the second airbag component may be the same as that of the first airbag component 30, or the structure of the second airbag component may be different from that of the first airbag component 30. As an example, the second airbag component is the same as the first airbag component 30, and initially, the second airbag component is not inflated with gas, which is not described in detail herein. As another example, the second airbag component is configured as an airbag, which is a bag body inflated with gas.

[0144] In the above technical solution, by the energy absorbing structure 40 including at least one of an energy absorbing box, a buffer frame, a spring, and a second airbag component, the energy absorbing structure 40 can have energy absorbing performance, so that the energy absorbing structure 40 meets the working requirements, and the energy absorbing effect of the energy absorbing structure 40 can be improved. After the energy absorbing structure 40 is hit, the energy absorbing structure 40 can absorb more collision force, which can further reduce the force on the battery cell 20.

[0145] According to some embodiments of the present application, the energy absorbing structure 40 is fixedly connected to at least one of the partition beam 13 and the side beam 12 .

[0146] The energy absorbing structure 40 is fixedly connected to the partition beam 13 , or the energy absorbing structure 40 is fixedly connected to the side beam 12 of the box body 10 , or the energy absorbing structure 40 is fixedly connected to both the partition beam 13 and the side beam 12 of the box body 10 .

[0147] In the above technical solution, by fixing the energy absorbing structure 40 to at least one of the partition beam 13 and the side beam 12, the energy absorbing structure 40 can be fixed in the buffer bin 132, thereby reducing the risk of movement of the energy absorbing structure 40 in the buffer bin 132, so that the energy absorbing structure 40 and the corresponding first airbag component 30 can correspond reliably. When the airbag structure 31 of the first airbag component 30 is subjected to collision force, the energy absorbing structure 40 can absorb energy easily.

[0148] According to some embodiments of the present application, Figure 5 As shown, the battery device 100 may further include: an energy absorbing beam 50, and the outer surface of at least one side beam 12 is provided with an energy absorbing beam 50. As an example, the outer surface of at least one second side beam 125 is provided with an energy absorbing beam 50. As another example, the outer surface of at least one first side beam 124 is provided with an energy absorbing beam 50. As another example, the outer surface of at least one second side beam 125 is provided with an energy absorbing beam 50, and the outer surface of at least one first side beam 124 is provided with an energy absorbing beam 50. By providing the energy absorbing beam 50, the energy absorbing beam 50 has an energy absorbing effect. When the energy absorbing beam 50 is subjected to a collision force, the energy absorbing beam 50 can absorb part of the collision force, thereby further reducing the force on the battery cell 20. The specific structure of the energy absorbing beam 50 is not specifically limited, as long as the energy absorbing beam 50 can absorb energy.

[0149] According to some embodiments of the present application, the box 10 may include a first box 14 and a second box 15. The first box 14 and the second box 15 are buckled together to form a closed installation chamber 11 inside the box 10, and the first box 14 may be located above the second box 15, and the second box 15 includes a plurality of side beams 12.

[0150] The electric device according to the embodiment of the present application includes the battery device 100 of the above embodiment. When the electric device collides, the first airbag component 30 is filled with gas, and the first airbag component 30 can absorb the impact force. Compared with the prior art, the force on the battery device 100 can be reduced, thereby reducing the force on the battery cell 20 in the battery device 100, reducing the deformation and damage risks of the battery cell 20, improving the reliability of the battery device 100, and thus improving the reliability of the electric device.

[0151] According to some embodiments of the present application, see Figure 2-Figure 5 As shown, the present application provides a battery device 100, which includes a box body 10, a first airbag component 30 and a plurality of battery cells 20. An installation bin 11 is formed in the box body 10, and the box body 10 includes two first side beams 124 and two second side beams 125, the two first side beams 124 are arranged oppositely and spaced apart along the length direction of the battery device 100, the two second side beams 125 are arranged oppositely and spaced apart along the width direction of the battery device 100, and the two first side beams 124 and the two second side beams 125 are connected to enclose the installation bin 11. A partition beam 13 is provided in the installation bin 11. The partition beam 13 extends along the width direction of the battery device 100. The two ends of the partition beam 13 are fixedly connected to the two second side beams 125 respectively. The partition beam 13 is spaced apart from the two first side beams 124. A buffer bin 132 is formed between the partition beam 13 and the first side beam 124 located at the front side. An energy bin 131 is formed between the partition beam 13 and the first side beam 124 located at the rear side. A plurality of battery cells 20 are installed in the energy bin 131. A first airbag component 30 is provided in the first side beam 124 located at the front side. The first side beam 124 located at the front side forms an installation space 121. The first airbag component 30 is provided in the installation space 121. An airbag ejection hole 123 communicating with the installation space 121 is formed on the outer side wall 122 of the first side beam 124 located at the front side. The airbag ejection hole 123 is provided corresponding to the corresponding first airbag component 30. An energy absorption structure 40 is provided in the buffer bin 132. The energy absorption structure 40 may be an airbag.

[0152] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0153] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0154] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that: include: A box body, wherein a mounting chamber is formed in the box body, and the mounting chamber accommodates a plurality of battery cells; a first airbag component, the first airbag component being arranged in the box body, the first airbag component being arranged on at least one side of the installation bin, and the first airbag component being located outside the installation bin, and the first airbag component being configured to be selectively inflated with gas; The box body includes a plurality of side beams, and the plurality of side beams are connected to enclose the installation bin, at least one of the side beams is provided with the first airbag component, and at least one of the first airbag components is arranged in the corresponding side beam.

2. The battery device according to claim 1, characterized in that: The side beam in which the first airbag component is arranged is formed with an installation space, and the first airbag component is arranged in the installation space.

3. The battery device according to claim 2, characterized in that: An airbag pop-up hole communicating with the installation space is formed on the outer side wall of the installation space, and the airbag pop-up hole corresponds to the corresponding first airbag component. When the first airbag component is inflated, at least a portion of the first airbag component moves to the outside of the installation space through the airbag pop-up hole.

4. The battery device according to claim 1, characterized in that: Along the length direction of the side beam where the first airbag component is provided, at least a portion of the first airbag component is located in a middle area of ​​the corresponding side beam.

5. The battery device according to claim 1, characterized in that: Along the arrangement direction of the corresponding side beams and the installation bins, when the first airbag component is inflated with gas, the orthographic projection of the first airbag component and the orthographic projection of the corresponding side beam have an overlapping area.

6. The battery device according to claim 5, characterized in that: Along the arrangement direction of the corresponding side beams and the installation bin, when the first airbag component is inflated with gas, the area of ​​the orthographic projection of the first airbag component is S1, and the area of ​​the overlapping area of ​​the orthographic projection of the first airbag component and the orthographic projection of the corresponding side beam is S2, satisfying: 10%≤S2 / S1≤100%.

7. The battery device according to claim 1, characterized in that: When the first airbag component is inflated with gas, along the height direction of the battery device, the height dimension of the first airbag component is greater than or equal to the height dimension of the corresponding side beam.

8. The battery device according to claim 1, characterized in that: When the first airbag component is inflated with gas, along the length direction of the corresponding side beam, the length dimension of the first airbag component is less than or equal to the length dimension of the corresponding side beam.

9. The battery device according to claim 1, characterized in that: The multiple side beams include: two first side beams and two second side beams, the two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery device, the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery device, and at least one of the two first side beams is provided with the first airbag component.

10. The battery device according to any one of claims 1 to 9, characterized in that: A partition beam is provided in the installation bin to separate the installation bin into an energy bin and a buffer bin. The energy bin accommodates a plurality of battery cells. The buffer bin is provided between at least one of the first airbag components and the energy bin.

11. The battery device according to claim 10, characterized in that: The energy compartment and the buffer compartment are arranged along the length direction of the battery device.

12. The battery device according to claim 11, characterized in that: The multiple side beams include: two first side beams and two second side beams, the two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery device, the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery device, the partition beam extends along the width direction of the battery device and is connected between the two second side beams, the partition beam is spaced apart from the two first side beams, so that the energy bin is formed between the partition beam and one of the first side beams, and the buffer bin is formed between the partition beam and the other first side beam.

13. The battery device according to claim 10, characterized in that: Also includes: An energy absorbing structure is arranged in the buffer bin.

14. The battery device according to claim 13, characterized in that: The energy absorbing structure includes at least one of an energy absorbing box, a buffer frame, a spring and a second airbag component.

15. The battery device according to claim 13, characterized in that: The energy absorbing structure is fixedly connected to at least one of the partition beam and the side beam.

16. An electrical device, characterized in that: Comprising a battery device according to any one of claims 1-15.

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