Battery device and electric equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a battery device and electric equipment. The battery device comprises a battery monomer, a box body and an energy absorption piece, the box body comprises a first box body, the first box body comprises a first wall and a second wall connected with the first wall, the battery monomer is arranged on the first wall, the second wall is connected with the peripheral side of the first wall and defines a containing space, and the containing space is used for containing the battery monomer; and the energy absorption piece is arranged in a gap between the battery monomer and the second wall. According to the embodiment of the invention, the energy absorption part is arranged in the gap between the single battery and the second wall, so that after the battery device is impacted, external impact can be resisted through the second wall, and residual impact energy can be absorbed through the energy absorption part with a bent structure, so that dual protection on the single battery is formed, and the service life of the battery device is prolonged. The reliability of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and more particularly to a battery device and electrical equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] With the increasing maturity of new energy technologies, new energy vehicles and other electrical equipment are gradually entering the public eye. The core technology of new energy vehicles lies in the battery device, and the safety and stability of the battery device directly determine the performance of the entire vehicle.

[0004] When a new energy vehicle is involved in a side collision, the battery device will be impacted. In the existing technology, the battery device mainly relies on the second wall of the first housing to resist the external impact. However, when the impact is large, the individual battery cells are prone to deformation, which reduces the reliability of the battery device. Utility Model Content

[0005] In view of the above problems, this application provides a battery device and an electrical device that solves the problem that battery cells are prone to deformation when subjected to large impacts in the prior art.

[0006] A first aspect of the embodiments of this application provides a battery device, comprising:

[0007] Battery cell;

[0008] The housing includes a first housing, which includes a first wall and a second wall intersecting the first wall. A battery cell is disposed on the first wall. The second wall connects to and encloses the periphery of the first wall to form a receiving space for accommodating the battery cell.

[0009] An energy-absorbing element is disposed in the gap between the battery cell and the second wall, and the energy-absorbing element has a bent structure.

[0010] The embodiments of this application provide an energy-absorbing component with a bent structure in the gap between the battery cell and the second wall. After the battery device is impacted, it can not only resist the external impact through the second wall, but also absorb the residual impact energy through the energy-absorbing component with the bent structure, forming a double protection for the battery cell and improving the reliability of the battery device.

[0011] In some embodiments of this application, the energy-absorbing element is provided on at least a portion of the surface of the second wall facing the battery cell.

[0012] The embodiments of this application can fix the energy-absorbing element in the gap between the battery cell and the second wall by providing an energy-absorbing element on at least a portion of the surface of the second wall facing the battery cell, which facilitates the placement of the battery cell into the accommodating space.

[0013] In some embodiments of this application, the connection between the energy-absorbing element and the second wall includes bonding, welding, and mechanical connection.

[0014] The embodiments of this application use bonding, welding and mechanical connection methods to connect the energy-absorbing component to the second wall, so that the energy-absorbing component can be fixed to the second wall by bonding, welding or mechanical connection, thereby realizing the installation of the energy-absorbing component.

[0015] In some embodiments of this application, the end of the energy-absorbing member facing the first wall protrudes beyond the surface of the battery cell facing the first wall, or the end of the energy-absorbing member facing the first wall is flush with the surface of the battery cell facing the first wall.

[0016] The embodiments of this application provide comprehensive protection for the side of the battery cell by having the end of the energy-absorbing component facing the first wall protrude beyond the surface of the battery cell facing the first wall, or by having the end of the energy-absorbing component facing the first wall flush with the surface of the battery cell facing the first wall. This reduces the likelihood of battery cell deformation.

[0017] In some embodiments of this application, the cross-sectional shape of the energy-absorbing element along the first direction includes a sine wave, a triangular wave, and a square wave, where the first direction is the height direction of the housing.

[0018] The embodiments of this application include sine wave, triangular wave and square wave in the cross-sectional shape of the energy-absorbing component along the first direction, wherein the first direction is the height direction of the box, so that the energy-absorbing component can be easily processed and the energy-absorbing effect can be achieved through the structure of the energy-absorbing component.

[0019] In some embodiments of this application, the energy-absorbing component includes a first part and a second part that are connected to each other. The cross-sectional shape of the first part along a first direction includes a sine wave, a triangular wave, or a square wave. The cross-sectional shape of the second part along the first direction includes a sine wave, a triangular wave, or a square wave. The first direction is the height direction of the housing.

[0020] The embodiments of this application achieve energy absorption by including a first part and a second part that are connected to each other. The cross-sectional shape of the first part along the first direction includes a sine wave, a triangular wave, or a square wave, and the cross-sectional shape of the second part along the first direction includes a sine wave, a triangular wave, or a square wave. This composite structure can achieve the function of energy absorption and protect the battery cell.

[0021] In some embodiments of this application, the cross-sectional shape of the first part along the first direction is the same as that of the second part along the first direction, and the troughs of the first part and the peaks of the second part are arranged opposite to each other.

[0022] In the embodiments of this application, the first part has the same cross-sectional shape along the first direction as the second part, and the troughs of the first part and the peaks of the second part are arranged opposite to each other. Thus, the energy absorption effect can be achieved through the composite structure formed by the first part and the second part.

[0023] In some embodiments of this application, the energy-absorbing element is a flexible metal element.

[0024] The embodiments of this application, by using an elastic metal component as the energy-absorbing element, allow for the selection of an elastic metal to be used to make the energy-absorbing element, thereby achieving the energy-absorbing effect from both structural and material aspects.

[0025] In some embodiments of this application, the battery device further includes a reinforcing portion disposed at the connection position between the first wall and the second wall.

[0026] The embodiments of this application, by providing a reinforcing part, can enhance the connection strength between the second wall and the first wall, and improve the impact resistance of the second wall.

[0027] In some embodiments of this application, the energy-absorbing element protrudes from or is flush with the battery cell at both ends along the first direction.

[0028] The embodiments of this application provide comprehensive protection for the surface of the battery cell facing the energy-absorbing component by having the energy-absorbing component protrude from or be flush with the battery cell at both ends along the first direction, thereby reducing the probability of deformation of the battery cell.

[0029] The second aspect of this application provides an electrical device that includes the battery device mentioned in the above embodiments, the battery device being used to supply power to the electrical device.

[0030] The embodiments of this application provide an energy-absorbing element in the gap between the battery cell and the second wall. After the battery device is impacted, it can not only resist the external impact through the second wall, but also absorb the residual impact energy through the bent structure of the energy-absorbing element, forming a double protection for the battery cell and improving the reliability of the battery device, thereby improving the safety of the electrical equipment.

[0031] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0034] Figure 2 This is a schematic diagram of the structure of an electrical device provided in some embodiments of this application;

[0035] Figure 3 for Figure 1 A schematic diagram of the structure of the first housing and battery cell assembly of the battery device shown;

[0036] Figure 4 for Figure 3 A partially enlarged structural diagram of the first housing and battery cell assembly of the battery device shown at point A;

[0037] Figure 5 for Figure 3 The diagram shows the first housing of the battery device and the battery cell assembly from a second perspective (with added support components).

[0038] Figure 6 for Figure 3 The diagram shows the first housing and battery cell assembly of the battery device from a third-view perspective.

[0039] Figure 7 for Figure 5 Another structural schematic diagram of the energy-absorbing component shown;

[0040] Figure 8 for Figure 5 Another structural schematic diagram of the energy-absorbing component shown;

[0041] Figure 9 for Figure 5 Another structural schematic diagram of the energy-absorbing component shown;

[0042] Figure 10 for Figure 5 Another structural schematic diagram of the energy-absorbing component shown.

[0043] The attached figures are labeled as follows:

[0044] 100. Battery device; 200. Electrical equipment; 300. Controller; 400. Motor;

[0045] 10. Battery cells;

[0046] 2. Housing; 20. First housing; 21. First wall; 22. Second wall; 221. First mounting hole; 23. Accommodation space; 24. Energy-absorbing component; 241. First part; 242. Second part; 25. Reinforcing part; 26. Connecting part; 261. Second mounting hole;

[0047] 30. Second box;

[0048] 40. Support components;

[0049] XX, length direction;

[0050] YY, width direction;

[0051] ZZ, altitude direction. Detailed Implementation

[0052] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0054] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0055] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0056] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0057] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0058] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0059] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0060] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0061] The battery devices described in this application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft. Such electrical equipment can be composed of battery cells and battery devices as described in this application.

[0062] In this application embodiment, the electrical devices using battery devices as power sources can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0063] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical equipment described above, but can also be applied to all batteries including housings and electrical equipment using batteries.

[0064] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0065] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0066] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0067] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0068] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0069] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0070] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate, and the second enclosure may be a battery tray, etc.

[0071] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0072] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0073] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. Current collectors without the positive active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. Current collectors without the negative active material layer protrude beyond those with the coating. These uncoated current collectors are stacked together to form the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0074] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices, such as new energy vehicles, mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0075] However, when new energy vehicles and other electrical equipment are involved in a side collision, the battery device will be impacted. In the existing technology, the battery device mainly relies on the second wall of the first housing to resist external impact. However, when the impact is large, the individual battery cells are prone to deformation, which reduces the reliability of the battery device.

[0076] To address this problem, embodiments of this application propose a battery device comprising a housing and an energy-absorbing component. The housing includes a first housing with a first wall and a second wall intersecting each other. A single battery cell is disposed on the first wall, and the second wall connects to and encloses the periphery of the first wall to form a receiving space for accommodating the battery cell. The energy-absorbing component is disposed within the gap between the battery cell and the second wall, and the energy-absorbing component has a bent structure. By placing the energy-absorbing component within the gap between the battery cell and the second wall, embodiments of this application provide dual protection for the battery cell after it is impacted. This allows the second wall to resist external impacts, while the bent energy-absorbing component absorbs residual impact energy, thus improving the reliability of the battery device.

[0077] The battery device in the embodiments of this application can be used in electrical equipment such as vehicles, or it can be installed in electrical equipment that requires backup power.

[0078] The structures in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0079] The first aspect of the embodiments of this application provides a battery device 100, such as Figure 1 , Figure 3 and Figure 4 As shown, the battery device 100 includes a battery cell 10, a housing 2, and an energy-absorbing component 24. The housing 2 includes a first housing 20, which includes a first wall 21 and a second wall 22. The first wall 21 and the second wall 22 intersect. The battery cell 10 is disposed on the first wall 21. The second wall 22 is connected to the periphery of the first wall 21 and encloses it to form a receiving space 23, which is used to receive the battery cell 10. The energy-absorbing component 24 is disposed in the gap between the battery cell 10 and the second wall 22, and the energy-absorbing component 24 has a bent structure. The first wall 21 can be a bottom wall, located at the bottom of the first housing 20, and the second wall 22 can be a side wall, located on the side of the first housing 20.

[0080] The housing 2 is used to house the battery cell 10 to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cell 10. The housing 2 can be a simple three-dimensional structure such as a cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres. The material of the housing 2 can be an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate, or a composite material such as glass fiber and epoxy resin. The embodiments of this application are not limited in this regard.

[0081] like Figure 1As shown, the housing 2 includes a first housing 20 and a second housing 30, wherein the second housing 30 and the first housing 20 overlap each other, and the second housing 30 and the first housing 20 together define a space for accommodating the battery cell 10. The first housing 20 can be a hollow structure with one end open, and the second housing 30 can be a plate-like structure, with the second housing 30 covering the open side of the first housing 20 so that the second housing 30 and the first housing 20 together define a space for accommodating the battery cell 10; the second housing 30 and the first housing 20 can also both be hollow structures with one side open, with the open side of the second housing 30 covering the open side of the first housing 20.

[0082] The energy-absorbing component 24 mentioned here refers to a structure that can protect the battery cell 10. It is usually a bending structure that can deform and absorb energy, which can further reduce the impact of the electrical equipment 200 on the battery cell 10 after being hit from the side and reduce the probability of the battery cell 10 deforming.

[0083] The embodiments of this application provide an energy-absorbing element 24 in the gap between the battery cell 10 and the second wall 22. After the battery device 100 is impacted, it can not only resist the external impact through the second wall 22, but also absorb the residual impact energy through the energy-absorbing element 24, forming a double protection for the battery cell 10 and improving the reliability of the battery device 100.

[0084] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the energy-absorbing member 24 is provided on at least a portion of the surface of the second wall 22 facing the battery cell 10, that is, the energy-absorbing member 24 is provided on at least a portion of the surface of the second wall 22 facing the battery cell 10.

[0085] It should be noted that the first housing 20 is typically rectangular; therefore, there can be four second walls 22, which are sequentially connected to form a rectangular cylindrical structure. The battery device 100 of this invention can have an energy-absorbing element 24 between the battery cell 10 and any one of the second walls 22, or it can have energy-absorbing elements 24 between the battery cell 10 and each of the four second walls 22, thus providing further protection for the battery cell 10 from multiple directions.

[0086] Understandably, each energy-absorbing element 24 is connected to the second wall 22, thereby reducing the impact of the energy-absorbing element 24 on the battery cell 10.

[0087] The embodiments of this application can fix the energy-absorbing member 24 in the gap between the battery cell 10 and the second wall 22 by disposing the energy-absorbing member 24 on at least a portion of the surface of the second wall 22 facing the battery cell 10, which facilitates the placement of the battery cell 10 into the accommodating space.

[0088] In some embodiments of this application, such as Figure 5 As shown, the connection methods between the energy-absorbing component 24 and the second wall 22 include bonding, welding, and mechanical connection. Bonding can be achieved using double-sided adhesive or liquid adhesive to connect the energy-absorbing component 24 and the second wall 22. Welding can be achieved by spot welding or brazing. Mechanical connection can be achieved by using screws or rivets to connect the energy-absorbing component 24 and the second wall 22.

[0089] The embodiments of this application utilize bonding, welding, and mechanical connection methods to connect the energy-absorbing component 24 to the second wall 22. This allows the energy-absorbing component 24 to be fixed to the second wall 22 through bonding, welding, or mechanical connection, thus achieving the installation of the energy-absorbing component 24.

[0090] In some embodiments of this application, such as Figure 5 As shown, the end of the energy-absorbing member 24 facing the first wall 21 protrudes from the surface of the battery cell 10 facing the first wall 21, or the end of the energy-absorbing member 24 facing the first wall 21 is flush with the surface of the battery cell 10 facing the first wall 21.

[0091] exist Figure 5 In this design, the bottom end of the energy-absorbing component 24 protrudes from the bottom surface of the battery cell 10, thus providing comprehensive protection for that side of the battery cell 10. Alternatively, the energy-absorbing component 24 can also adopt a segmented structure, such as a two- or three-segment structure, where adjacent energy-absorbing components 24 are spaced apart, which also serves to protect the battery cell 10.

[0092] The embodiments of this application provide comprehensive protection for the side of the battery cell 10 by having the end of the energy-absorbing member 24 facing the first wall 21 protrude from the surface of the battery cell 10 facing the first wall 21, or by having the end of the energy-absorbing member 24 facing the first wall 21 flush with the surface of the battery cell 10 facing the first wall 21, thereby reducing the probability of deformation of the battery cell 10.

[0093] Optionally, the energy-absorbing component 24 can be spaced apart from the surface of the battery cell 10 or in contact with the surface of the battery cell 10, both of which can play a protective role for the battery cell 10.

[0094] Optionally, such as Figure 5 As shown, in order to facilitate the placement of the battery cell 10, the battery cell 10 can be placed directly on the first wall 21, or a support member 40 can be set on the first wall 21 and the battery cell 10 can be placed on the support member 40, thereby adjusting the height position of the battery cell 10.

[0095] In some embodiments of this application, such as Figure 5 , Figure 7 and Figure 8 As shown, the cross-sectional shape of the energy-absorbing element 24 along the first direction includes a sine wave, a triangular wave, and a square wave, and the first direction is the height direction of the box 2.

[0096] exist Figure 7 In the middle, the cross-sectional shape of the energy-absorbing element 24 along the first direction is a triangular wave, where the first direction is... Figure 3 The ZZ direction in the diagram refers to the height direction of the first box 2, where the length direction is the YY direction and the width direction is the XX direction. Figure 8 In the middle, the cross-sectional shape of the energy-absorbing element 24 along the first direction is a square waveform. Figure 5 In the middle, the cross-sectional shape of the energy-absorbing element 24 along the first direction is a sinusoidal waveform.

[0097] The embodiments of this application include the cross-sectional shape of the energy-absorbing component 24 along the first direction, which includes a sine wave, a triangular wave, and a square wave. The first direction is the height direction of the box 2, which facilitates the processing of the energy-absorbing component 24 and achieves the energy-absorbing effect through the structure of the energy-absorbing component 24.

[0098] In some embodiments of this application, such as Figure 9 and Figure 10 As shown, the energy-absorbing component 24 includes a first part 241 and a second part 242 that are connected to each other. The cross-sectional shape of the first part 241 along the first direction includes a sine wave, a triangular wave, or a square wave. The cross-sectional shape of the second part 242 along the first direction includes a sine wave, a triangular wave, or a square wave. The first direction is the height direction of the box 2.

[0099] The overall shape of the energy-absorbing component 24 is a double sine wave, and the troughs and peaks of the two sine waves are arranged opposite each other. The energy-absorbing component 24 can be manufactured using an integral forming process.

[0100] Alternatively, the first part 241 can be a sinusoidal waveform plate, and the second part 242 can also be a sinusoidal waveform plate, with the two parts joined by an insert fitting and welding method. Of course, the energy-absorbing element 24 can also be formed by joining two corrugated tubes together, in which case the first part 241 and the second part 242 are connected by an upper and lower mating structure.

[0101] Regardless of the manufacturing process used to produce the energy-absorbing component 24, it is possible to create a composite structure for the energy-absorbing component 24, thereby achieving a better energy absorption effect.

[0102] The embodiments of this application include an energy-absorbing component 24 comprising a first part 241 and a second part 242 connected to each other. The cross-sectional shape of the first part 241 along the first direction includes a sine wave, a triangular wave, or a square wave, and the cross-sectional shape of the second part 242 along the first direction includes a sine wave, a triangular wave, or a square wave. This composite structure can achieve the function of energy absorption and protect multiple battery cells 10.

[0103] Specifically, the waveforms of the first part 241 and the second part 242 can be the same or different. For example, the first part 241 can use a triangular waveform and the second part 242 can use a square waveform. In the same way, a composite energy-absorbing component 24 can be formed to protect multiple battery cells 10.

[0104] In some embodiments of this application, such as Figure 9 and Figure 10 As shown, the cross-sectional shape of the first part 241 along the first direction is the same as that of the second part 242 along the first direction, and the troughs of the first part 241 and the peaks of the second part 242 are set opposite to each other.

[0105] It should be noted that the cross-sectional shape of the first part 241 along the first direction can be a sine wave, and correspondingly, the cross-sectional shape of the second part 242 along the first direction is also a sine wave, with the peaks and troughs of the two sine waves positioned opposite each other. Alternatively, the cross-sectional shape of the first part 241 along the first direction can be a triangular wave, and correspondingly, the cross-sectional shape of the second part 242 along the first direction is also a triangular wave, with the peaks and troughs of the two triangular waves positioned opposite each other.

[0106] In the embodiments of this application, the first part 241 and the second part 242 have the same cross-sectional shape along the first direction, and the troughs of the first part 241 and the peaks of the second part 242 are set opposite to each other. Thus, the energy absorption effect can be achieved through the composite structure formed by the first part 241 and the second part 242.

[0107] In some embodiments of this application, the energy-absorbing element 24 is a flexible metal element.

[0108] It should be noted that the elastic metal component mentioned here can be made of aluminum alloy, copper alloy, or other metals, possessing elastic deformation capability. It can deform and return to its original position under impact, thereby protecting the battery cell 10.

[0109] The embodiments of this application use an elastic metal part for the energy-absorbing element 24, so that an elastic metal can be selected to make the energy-absorbing element 24, and the energy-absorbing effect can be achieved from both structural and material aspects.

[0110] In some embodiments of this application, such as Figure 5 As shown, the battery device 100 also includes a reinforcing part 25, which is disposed at the connection position of the first wall 21 and the second wall 22.

[0111] The reinforcing part 25 here can be a plate-like structure, such as a flat plate or an arc-shaped plate, which can stabilize and fix the second wall 22.

[0112] The embodiments of this application, by providing the reinforcing part 25, can enhance the connection strength between the second wall 22 and the first wall 21, and improve the impact resistance of the second wall 22.

[0113] In some embodiments of this application, such as Figure 5 As shown, the second wall 22 has a hollow structure.

[0114] The hollow structure mentioned here refers to the fact that the interior of the second wall 22 is not solid, but has gaps, which can reduce the weight of the second wall 22. For example, the second wall 22 can adopt a honeycomb structure or other shapes.

[0115] The embodiments of this application reduce the weight of the second wall 22 by setting it as a hollow structure, thereby reducing the total weight of the battery device 100. In addition, the impact resistance of the second wall 22 can be increased by setting it as a hollow structure.

[0116] Optionally, such as Figure 3 and Figure 4 As shown, the surface of the second wall 22 facing away from the first wall 21 is provided with a first mounting hole 221, which allows for a detachable connection between the second wall 22 and the second housing 30 via a connector. Accordingly, there are multiple first mounting holes 221, and these multiple first mounting holes 221 are spaced apart along the YY direction.

[0117] Optionally, the first housing 20 further includes a connecting part 26, which is connected to the side plate and located at the rear of the accommodating space 23. The connecting part 26 is provided with a second mounting hole 261, which can detachably fix the first housing 20 to the electrical equipment 200.

[0118] Accordingly, there are multiple second mounting holes 261, and the multiple second mounting holes 261 are spaced apart along the YY direction, so that the battery device 100 can be fixedly installed on the electrical equipment 200.

[0119] In some embodiments of this application, the energy-absorbing member 24 protrudes from the battery cell 10 at both ends along the first direction or is flush with the battery cell 10.

[0120] Continue to refer to Figure 4As shown, the upper end of the energy-absorbing member 24 protrudes from the upper surface of the battery cell 10, and the lower end of the energy-absorbing member 24 protrudes from the lower surface of the battery cell 10, so that the energy-absorbing member 24 can completely cover the surface of the battery cell 10 facing the energy-absorbing member 24, thus forming protection for the battery cell 10.

[0121] Alternatively, the upper end of the energy-absorbing member 24 is flush with the upper surface of the battery cell 10, and the lower end of the energy-absorbing member 24 is flush with the lower surface of the battery cell 10, so that the energy-absorbing member 24 can completely cover the surface of the battery cell 10 facing the energy-absorbing member 24, thus forming protection for the battery cell 10.

[0122] The embodiments of this application provide comprehensive protection for the surface of the battery cell 10 facing the energy-absorbing member 24 by having the energy-absorbing member 24 protrude from the battery cell 10 at both ends along the first direction or be flush with the battery cell 10, thereby reducing the probability of deformation of the battery cell 10.

[0123] The second aspect of this application provides an electrical device 200, which includes the battery device 100 mentioned in the above embodiments, and the battery device 100 is used to supply power to the electrical device 200.

[0124] The electrical device 200 is equipped with a battery device 100, which may be located at the bottom, head, or tail of the electrical device 200. The battery device 100 can be used to power the electrical device 200; for example, the battery device 100 can serve as the operating power source for the electrical device 200. The electrical device 200 may also include a controller 300 and a motor 400. The controller 300 is used to control the battery device 100 to supply power to the motor 400, for example, to meet the power requirements of the electrical device 200 during startup, navigation, and operation.

[0125] The embodiments of this application provide an energy-absorbing element 24 in the gap between the battery cell 10 and the second wall 22. After the battery device 100 is impacted, it can not only resist the external impact through the second wall 22, but also absorb the residual impact energy through the energy-absorbing element 24, forming a double protection for the battery cell 10, improving the reliability of the battery device 100, and thus improving the safety of the electrical equipment 200.

[0126] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0127] A first aspect of this application provides a battery device 100, including a battery cell 10, a housing 2, and an energy-absorbing member 24. The housing 2 includes a first housing 20, which includes a first wall 21 and a second wall 22. The second wall 22 intersects with the first wall 21. The battery cell 10 is mounted on the first wall 21. The second wall 22 connects to the periphery of the first wall 21 and encloses a receiving space 23 for accommodating the battery cell 10. The energy-absorbing member 24 is disposed in the gap between the battery cell 10 and the second wall 22, and the energy-absorbing member 24 has a bent structure. By providing the energy-absorbing member 24 in the gap between the battery cell 10 and the second wall 22, the embodiment of this application provides double protection for the battery cell 10 after the battery device 100 is impacted. This not only allows the second wall 22 to resist external impacts but also allows the energy-absorbing member 24 to absorb residual impact energy, thus improving the reliability of the battery device 100. Furthermore, the energy-absorbing member 24 is disposed on at least a portion of the surface of the second wall 22 facing the battery cell 10. Further, the connection method between the energy-absorbing component 24 and the second wall 22 includes bonding, welding, and mechanical connection. Further, the end of the energy-absorbing component 24 facing the first wall 21 protrudes beyond the surface of the battery cell 10 facing the first wall 21, or the end of the energy-absorbing component 24 facing the first wall 21 is flush with the surface of the battery cell 10 facing the first wall 21. Further, the cross-sectional shape of the energy-absorbing component 24 along the first direction includes a sine wave, a triangular wave, and a square wave, where the first direction is the height direction of the housing 2. Further, the energy-absorbing component 24 includes a first part 241 and a second part 242 connected to each other. The cross-sectional shape of the first part 241 along the first direction includes a sine wave, a triangular wave, or a square wave, and the cross-sectional shape of the second part 242 along the first direction includes a sine wave, a triangular wave, or a square wave, where the first direction is the height direction of the housing 2. Further, the cross-sectional shape of the first part 241 along the first direction and the cross-sectional shape of the second part 242 along the first direction are the same, and the troughs of the first part 241 and the crests of the second part 242 are opposite to each other. Furthermore, the energy-absorbing member 24 is a flexible metal component. Furthermore, the battery device 100 also includes a reinforcing portion 25, which is disposed at the connection point between the first wall 21 and the second wall 22. Furthermore, the energy-absorbing member 24 protrudes from or is flush with the battery cell 10 at both ends along a first direction.

[0128] A second aspect of the embodiments of this application provides an electrical device 200, which includes the battery device 100 mentioned in the above embodiments, and the battery device 100 is used to supply power to the electrical device 200.

[0129] The embodiments of this application provide an energy-absorbing element 24 in the gap between the battery cell 10 and the second wall 22. After the battery device 100 is impacted, it can not only resist the external impact through the second wall 22, but also absorb the residual impact energy through the energy-absorbing element 24, forming a double protection for the battery cell 10, improving the reliability of the battery device 100, and thus improving the safety of the electrical equipment 200.

[0130] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery cell; The housing includes a first housing, the first housing including a first wall and a second wall intersecting the first wall, the battery cell being disposed on the first wall, and the second wall being connected to the periphery of the first wall and enclosing it to form an accommodating space, the accommodating space being used to accommodate the battery cell; as well as An energy-absorbing component is disposed in the gap between the battery cell and the second wall, and the energy-absorbing component has a bent structure.

2. The battery device as claimed in claim 1, characterized in that, The energy-absorbing element is provided on at least a portion of the surface of the second wall facing the battery cell.

3. The battery device as claimed in claim 2, characterized in that, The connection methods between the energy-absorbing component and the second wall include bonding, welding, and mechanical connection.

4. The battery device as claimed in claim 1, characterized in that, The end of the energy-absorbing component facing the first wall protrudes beyond the surface of the battery cell facing the first wall, or the end of the energy-absorbing component facing the first wall is flush with the surface of the battery cell facing the first wall.

5. The battery device as claimed in claim 4, characterized in that, The cross-sectional shape of the energy-absorbing element along the first direction includes a sine wave, a triangular wave, and a square wave, where the first direction is the height direction of the box.

6. The battery device as claimed in claim 4, characterized in that, The energy-absorbing component includes a first part and a second part that are connected to each other. The cross-sectional shape of the first part along a first direction includes a sine wave, a triangular wave, or a square wave. The cross-sectional shape of the second part along the first direction includes a sine wave, a triangular wave, or a square wave. The first direction is the height direction of the box.

7. The battery device as claimed in claim 6, characterized in that, The first part has the same cross-sectional shape along the first direction as the second part has the same cross-sectional shape along the first direction, and the troughs of the first part and the peaks of the second part are positioned opposite each other.

8. The battery device according to any one of claims 1 to 7, characterized in that, The energy-absorbing element is made of an elastic metal.

9. The battery device according to any one of claims 1 to 7, characterized in that, The battery device further includes a reinforcing part, which is disposed at the connection position between the first wall and the second wall.

10. The battery device according to any one of claims 5 to 7, characterized in that, The energy-absorbing element protrudes from or is flush with the battery cell at both ends along the first direction.

11. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 10, the battery device being used to supply power to the electrical device.

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