Battery device, lower box body and electric device

Abstract

The utility model provides a battery device, a lower box body and a power utilization device, the battery device comprises the lower box body and a battery monomer, the lower box body is provided with a containing space, the lower box body comprises a supporting part and an outer frame, the supporting part comprises a fiber composite bottom plate located on one side of the containing space in the first direction, the outer frame is a non-metal structural part, and the outer frame comprises a side wall; the side wall is arranged around the fiber composite bottom plate and the accommodating space; the battery monomers are positioned in the accommodating space and are arranged on the fiber composite bottom plate; the lower box body further comprises an anti-extrusion piece, and the anti-extrusion piece is arranged on the surface of the side, away from the containing space, of the side wall.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a battery device, a lower housing, and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development. Improving the reliability of battery devices has always been a research focus in battery technology development. Utility Model Content

[0003] This application provides a battery device, a lower housing, and an electrical device, which helps to balance the reliability and energy density of the battery device.

[0004] This application provides a battery device including a lower housing and battery cells. The lower housing has a receiving space and includes a support member and an outer frame. The support member includes a fiber composite base plate located on one side of the receiving space along a first direction. The outer frame is a non-metallic structural component and includes sidewalls that surround the fiber composite base plate and the receiving space. The battery cells are located in the receiving space and disposed on the fiber composite base plate. The lower housing also includes an anti-compression member disposed on the surface of the sidewall facing away from the receiving space.

[0005] The lower housing of this embodiment includes interconnected support members and an outer frame. The fiber composite base plate of the support member is used to support the battery cell assembly. The outer frame is a non-metallic structural component. The outer frame is used to support the support member. The lower housing can be installed on an electrical device through the outer frame. The fiber composite base plate itself has relatively high impact resistance, which is beneficial to improving the impact resistance of the bottom of the lower housing. An anti-crushing member is disposed on the side surface of the side wall away from the receiving space. When the side of the lower housing is impacted, it will act on the anti-crushing member first, so as to disperse the impact force through the anti-crushing member, reduce damage to the internal battery cells, and provide protection for the battery cells. At the same time, the fiber composite base plate and the outer frame are relatively lightweight, which is beneficial to the lightweight design of the lower housing. Therefore, the lower housing of this embodiment can take into account the side impact resistance, the bottom impact resistance, and the overall lightweight design, which is beneficial to the reliability and energy density of the battery device.

[0006] In some feasible embodiments, the sidewalls include a first wall and a second wall arranged opposite to each other. Anti-compression members are provided on the side surfaces of the first wall and the second wall that are away from the receiving space. When the lower box is subjected to a side impact, the anti-compression members on both sides can jointly resist the lateral force and improve the structural stability of the lower box.

[0007] In some feasible ways, the anti-extrusion component is bonded, welded, locked to the sidewall, or is an integral injection-molded structure. The anti-extrusion component and the sidewall can be connected in a variety of ways, which helps to improve the connection flexibility between the anti-extrusion component and the sidewall.

[0008] In some feasible implementations, the outer frame also includes a mounting section located on the side wall away from the receiving space. An anti-compression member is connected to the mounting section, directly transferring the forces borne by the mounting section to the anti-compression member, thus improving the load-bearing capacity of the mounting section. Furthermore, the anti-compression member also restrains the deformation of the mounting section, improving its structural strength and the reliability of the lower housing.

[0009] In some feasible embodiments, in the first direction, the mounting part is located at the end of the side wall away from the fiber composite base plate, and the anti-compression member extends from the mounting part toward the fiber composite base plate, which can transmit the force borne by the mounting part to the bottom of the lower housing along the anti-compression member. Since the fiber composite base plate itself has relatively high impact resistance, the force transmission path can be optimized and the reliability of the lower housing can be improved.

[0010] In some feasible ways, the anti-crushing component and the mounting part are integrally molded, which improves the connection strength between the anti-crushing component and the mounting part.

[0011] In some feasible implementations, the anti-crush component includes side reinforcing ribs. Side reinforcing ribs can improve the structural strength of the lower housing's sides, enhancing its resistance to lateral crushing. When the lower housing bears lateral impact forces, the side reinforcing ribs can disperse the lateral impact force, buffer the impact force, and reduce the likelihood of damage or failure of the battery cells within the lower housing due to impact.

[0012] In some feasible implementations, multiple side reinforcing ribs are arranged at intervals, with each rib extending along a first direction. When the side of the lower housing is subjected to compressive forces, the multiple side reinforcing ribs can simultaneously bear the load, and the force can be transferred from each side reinforcing rib to the bottom of the lower housing, improving the lower housing's resistance to side impacts. Furthermore, by arranging the side reinforcing ribs at intervals, the weight of the lower housing can be reduced, achieving a lightweight design.

[0013] In some feasible implementations, the outer frame includes a protective base plate, which includes bottom reinforcing ribs located below and connected to the fiber composite base plate. Side reinforcing ribs extend along a first direction to the protective base plate and are connected to the bottom reinforcing ribs, forming a continuous force path. This disperses localized forces from the sides and bottom throughout the entire structure, improving the structural strength of the lower housing. Furthermore, connecting the side and bottom reinforcing ribs also forms a frame structure, significantly improving the rigidity of the battery housing and reducing damage to internal battery cells and assemblies from external impacts.

[0014] In some feasible implementations, the side reinforcing ribs have a chamfer at the end closest to the fiber composite base plate along the first direction. This can alleviate stress concentration at the ends of the side reinforcing ribs and improve their structural strength. Furthermore, when the side reinforcing ribs and the outer frame are integrally injection molded, the chamfer at the ends of the side reinforcing ribs can also improve the flowability of the injection molding material, enhance the injection molding effect, and reduce processing difficulty.

[0015] In some feasible implementations, the compression-resistant component includes an energy-absorbing component, which is a hollow or semi-hollow structure with an energy-absorbing cavity formed inside. When subjected to lateral compression, the energy-absorbing component absorbs energy through deformation, which can be either plastic or elastic. This reduces the force transmitted to the outer frame and internal battery cell components, lowering the likelihood of damage or failure of the battery cell components within the lower housing due to impact.

[0016] In some feasible embodiments, the energy-absorbing component includes a first side panel and a second side panel disposed opposite to each other, with the first side panel and the second side panel spaced apart to form an energy-absorbing cavity. The first side panel is fitted to the side wall, which enables the first side panel of the energy-absorbing component to fit against the entire side surface, thereby improving the protection effect on the side of the lower housing and reducing the risk of local stress concentration.

[0017] In some feasible embodiments, the energy-absorbing component further includes an upper panel and a lower panel disposed opposite to each other along a first direction, the upper panel and the lower panel being connected between a first side panel and a second side panel. That is, the energy-absorbing component is configured as an energy-absorbing hollow beam enclosed by the upper panel, the lower panel, the first side panel, and the second side panel, thereby reducing the weight of the compression-resistant component.

[0018] In some feasible implementations, the energy-absorbing component also includes a honeycomb core sandwiched between the first and second side panels. That is, the energy-absorbing component is configured as a honeycomb panel formed by combining the first side panel, the second side panel, and the honeycomb core, significantly improving the compression resistance of the lower housing side.

[0019] In some feasible embodiments, the support also includes a fiber composite side plate, the fiber composite base plate and the fiber composite side plate are connected to form a receiving space, and the fiber composite side plate is connected to the side of the sidewall facing the receiving space.

[0020] When battery cells are housed within the lower enclosure, the fiber composite side panels provide circumferential protection for the battery cells. These side panels offer excellent resistance to impact deformation and enhance the lower enclosure's resistance to lateral extrusion. When the lower enclosure bears lateral impact forces, the outer frame and fiber composite side panels absorb the impact, buffering the force and reducing the likelihood of damage or malfunction to the battery cells within the lower enclosure. Furthermore, the relatively low weight of the fiber composite side panels contributes to a lightweight design for the lower enclosure.

[0021] This application provides a lower housing for a battery device. The lower housing has a receiving space for accommodating individual battery cells. The lower housing includes a support member and an outer frame. The support member includes a fiber composite base plate located on one side of the receiving space along a first direction, which supports the individual battery cells. The outer frame is a non-metallic structural component and includes side walls that surround the fiber composite base plate and the receiving space. The lower housing also includes an anti-compression member disposed on the surface of the side wall facing away from the receiving space.

[0022] This application provides an electrical device that includes the battery device described above. The battery device is used to provide electrical energy. Attached Figure Description

[0023] 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:

[0024] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application;

[0026] Figure 3 This is a partially exploded structural diagram of a battery cell provided in an embodiment of this application;

[0027] Figure 4 This is a top view of the lower housing provided in one embodiment of this application;

[0028] Figure 5 yes Figure 4A schematic diagram of the cross-sectional structure along the VV direction;

[0029] Figure 6 This is a schematic diagram of the lower housing provided in one embodiment of this application;

[0030] Figure 7 This is a structural schematic diagram of the lower housing provided in another embodiment of this application;

[0031] Figure 8 This is a front view of the lower housing provided in an embodiment of this application;

[0032] Figure 9 This is a structural schematic diagram of the lower housing provided in another embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Vehicle; 10. Battery unit; 11. Controller; 12. Motor;

[0035] 20. Battery cell modules;

[0036] 30. Battery cell;

[0037] 40. End cap; 41. Electrode terminal;

[0038] 50. Shell;

[0039] 60. Electrode assembly;

[0040] 70. Lower housing; 701. Accommodation space;

[0041] 80. Supporting components; 81. Fiber composite base plate; 82. Fiber composite side plate; 83. Fiber composite flange;

[0042] 90. Outer frame; 91. Protective base plate; 911. Bottom reinforcing rib; 92. Side wall; 92a. First wall; 92b. Second wall; 93. Mounting part;

[0043] 100. Anti-compression component; 110. Side reinforcing rib; 120. Energy-absorbing component; 1201. First side panel; 1202. Second side panel; 1203. Honeycomb core;

[0044] Z, first direction; X, second direction; Y, third direction. Detailed Implementation

[0045] 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.

[0046] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0047] 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.

[0048] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0049] 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.

[0050] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] 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.

[0052] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0053] The battery device mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery device mentioned in this application may include battery cell assemblies, etc. A battery device generally includes a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0054] In related technologies, the battery pack casing is made of metal, which makes the overall weight of the casing relatively heavy and affects the overall energy density of the battery pack. If the casing thickness is reduced to decrease the overall weight, the bottom and side structural strength of the casing will be relatively compromised, resulting in reduced impact resistance at the bottom and compression resistance at the sides, thus affecting the reliability of the battery pack.

[0055] Based on the above considerations, this application provides a battery device. In such a battery device, the lower casing includes a support member and an outer frame. The support member includes a fiber composite base plate, which helps to improve the bottom rigidity of the battery device and enhance the impact resistance of the bottom of the casing. The side walls of the outer frame are provided with anti-compression members, which helps to improve the side compression resistance of the battery device. The support member and the outer frame are relatively lightweight, which is beneficial to the lightweight design of the lower casing, balancing the strength of the side structure, the strength of the bottom structure, and the overall lightweight design.

[0056] The technical solutions described in the embodiments of this application are applicable to battery devices and electrical devices that use battery devices.

[0057] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles. Spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers. This application does not impose any special limitations on the above-mentioned electrical devices.

[0058] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical devices described above, but can also be applied to all battery devices including lower housings and electrical devices using battery devices. However, for the sake of brevity, the following embodiments are all described using electric vehicles as examples.

[0059] See also Figure 1 As shown, vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Vehicle 1 is equipped with a battery device 10. The battery device 10 can be located at the bottom of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1. Vehicle 1 may also include a controller 11 and a motor 12. The controller 11 is used to control the battery device 10 to supply power to the motor 12. For example, this is for the power needs of vehicle 1 during starting, navigation, and driving.

[0060] In some embodiments of this application, the battery device 10 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0061] To meet different power demands, the battery device 10 may include multiple battery cells 30. A battery cell 30 is the smallest unit that makes up the battery cell assembly 20. Multiple battery cells 30 may be connected in series and / or in parallel via electrode terminals for various applications. The battery device 10 mentioned in this application includes a battery cell assembly 20. Multiple battery cells 30 may be connected in series, in parallel, or in a mixed configuration. A mixed configuration refers to a combination of series and parallel connections.

[0062] In some embodiments, see Figure 2As shown, there can be multiple battery cells 30. Multiple battery cells 30 are first connected in series, parallel, or in a mixed manner to form a battery cell assembly 20. Multiple battery cell assemblies 20 are then connected in series, parallel, or in a mixed manner to form a whole.

[0063] Multiple battery cells 30 in the battery cell assembly 20 can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of multiple battery cells 30 in the battery cell assembly 20.

[0064] In this embodiment, the battery cell 30 may include a lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and this embodiment is not limited thereto. The battery cell 30 may be flat, cuboid, or other shapes, and this embodiment is not limited thereto either. However, for the sake of brevity, the following embodiment uses a cuboid battery cell 30 as an example for illustration.

[0065] See also Figure 3 As shown, the battery cell 30 includes an end cap 40, a housing 50, and an electrode assembly 60.

[0066] End cap 40 refers to a component that covers the opening of housing 50 to isolate the internal environment of battery cell 30 from the external environment. Exemplarily, the shape of end cap 40 can be adapted to the shape of housing 50 to fit the housing 50. Exemplarily, end cap 40 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 40 is not easily deformed under compression or impact, enabling battery cell 30 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 41 can be provided on end cap 40. Electrode terminals 41 can be used for electrical connection with electrode assembly 60 to output or input electrical energy to battery cell 30.

[0067] In some embodiments, the end cap 40 may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 30 reaches a threshold. The end cap 40 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating component may also be provided on the inner side of the end cap 40. The insulating component can be used to isolate the electrical connection components within the housing 50 from the end cap 40 to reduce the risk of short circuits. Exemplarily, the insulating component can be plastic, rubber, etc.

[0068] The housing 50 is a component used to cooperate with the end cap 40 to form the internal environment of the battery cell 30. The formed internal environment can accommodate the electrode assembly 60, electrolyte (not shown in the figure), and other components. The housing 50 and the end cap 40 can be independent components. An opening can be provided on the housing 50, and the end cap 40 closes the opening to form the internal environment of the battery cell 30. Alternatively, the end cap 40 and the housing 50 can be integrated. Specifically, the end cap 40 and the housing 50 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 50, the end cap 40 closes the housing 50. The housing 50 can be of various shapes and sizes, such as cuboid, hexagonal prism, etc. Specifically, the shape of the housing 50 can be determined according to the specific shape and size of the electrode assembly 60. The material of the housing 50 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment does not impose any special limitations on this.

[0069] See also Figure 4 and Figure 5 As shown, this application provides a battery device 10, which includes a lower housing 70 and a battery cell 30.

[0070] The lower housing 70 has a receiving space 701 for accommodating the battery cell assembly 20, which can be placed in the receiving space 701 of the lower housing 70.

[0071] In some possible implementations, the battery assembly 10 also includes an upper housing or cover. The upper housing or cover can close onto the lower housing 70. The upper housing or cover can close the receiving space 701 of the lower housing 70.

[0072] In some feasible ways, the lower box 70 can be of various shapes, such as a cylinder, a cuboid, etc.

[0073] In some feasible ways, to improve the sealing performance after the upper housing or cover plate is connected to the lower housing 70, a sealing element, such as sealant or sealing ring, can also be provided between the upper housing or cover plate and the lower housing 70.

[0074] In the battery device of this application embodiment, the lower housing 70 includes a support member 80 and an outer frame 90.

[0075] The support member 80 includes a fiber composite base plate 81 located on one side of the receiving space 701 along the first direction Z, and the battery cell 30 is disposed on the fiber composite base plate 81.

[0076] The support member 80 can be used to support the battery cell 30. The first direction Z is the vertical direction. The support member 80 includes a fiber composite base plate 81, which is located below the receiving space 701. The fiber composite base plate 81 has good impact deformation resistance. For example, when the lower housing 70 is subjected to a bottom ball impact test, the fiber composite base plate 81 can absorb the impact energy of the test ball, buffer the impact force, and reduce the possibility of damage or failure of the battery cell assembly 20 inside the lower housing 70 due to impact.

[0077] In some feasible embodiments, the fiber composite base plate 81 can be manufactured using an injection molding process. In some examples, the material of the fiber composite base plate 81 can be, but is not limited to, glass fiber resin composite material or carbon fiber resin composite material. For example, the fiber composite base plate 81 can be manufactured using glass fiber resin composite material or carbon fiber resin composite material.

[0078] The outer frame 90 is a non-metallic structural component. The outer frame 90 includes a side wall 92, which surrounds the fiber composite base plate 81 and the receiving space 701.

[0079] The outer frame 90 can surround the fiber composite base plate 81 to protect the battery cell assembly 20. The lower housing 70 can be located at the bottom of the vehicle 1. The lower housing 70 can be connected to the vehicle 1 via the outer frame 90. The outer frame 90 is used to support the support member 80. The force on the support member 80 can be transmitted to the vehicle 1 through the outer frame 90. At the same time, the outer frame 90 is a non-metallic structural component, and the fiber composite base plate 81 and the outer frame 90 are relatively lightweight, which is conducive to the lightweight design of the lower housing 70.

[0080] In some feasible ways, the outer frame 90 can be manufactured using an injection molding process. In some examples, the material of the outer frame 90 may include, but is not limited to, plastics. The material of the outer frame 90 may not include high-strength fibers.

[0081] In some feasible ways, the fiber composite base plate 81 and the outer frame 90 are manufactured separately, and then the fiber composite base plate 81 and the outer frame 90 are connected to form an integral structure.

[0082] Based on this, the battery device 10 in this embodiment of the application also includes an anti-compression member 100, which is disposed on the side of the sidewall 92 away from the receiving space 701.

[0083] The anti-crush member 100 is located on the outside of the receiving space 701 to protect the side of the lower housing 70. When the side of the lower housing 70 is impacted, it will act first on the anti-crush member 100 to disperse the impact force and reduce damage to the internal battery cells 30.

[0084] In some feasible ways, the anti-crushing component 100 can be made of metal to improve the lower housing 70's ability to resist side impacts. Alternatively, the anti-crushing component 100 can be made of non-metallic material to achieve a lightweight design for the lower housing 70. Alternatively, the anti-crushing component 100 can also be made of a layered combination of materials of different strengths, with the outer layer using a high-toughness material to absorb impacts and the inner layer using a high-strength material for support, thus balancing the requirements of lightweight design and resistance to side impacts.

[0085] The lower housing 70 of this embodiment includes a support member 80, an outer frame 90, and an anti-crush member 100. The fiber composite base plate 81 of the support member 80 is used to support the battery cell assembly 20. The outer frame 90 is a non-metallic structural component. The outer frame 90 is used to support the support member 80. The lower housing 70 can be installed on an electrical device, such as the bottom of a vehicle 1, via the outer frame 90. The fiber composite base plate 81 itself has relatively high impact resistance, which helps to improve the impact resistance of the bottom of the lower housing 70. The anti-crush member 100 is disposed on the side surface of the side wall 92 away from the receiving space. When the side of the lower housing 70 is impacted, it will first act on the anti-crush member 100 to disperse the impact force, reduce damage to the internal battery cells 30, and provide protection for the battery cells 30. At the same time, the fiber composite base plate 81 and the outer frame 90 are relatively lightweight, which is conducive to the lightweight design of the lower housing 70. Therefore, the lower housing 70 of this application embodiment can take into account the side impact resistance, bottom impact resistance and overall lightweight design, which is beneficial to taking into account the reliability and energy density of the battery device 10.

[0086] In some possible implementations, the support 80 also includes a fiber composite side plate 82, the fiber composite base plate 81 and the fiber composite side plate 82 are connected to form a receiving space 701, and the fiber composite side plate 82 is connected to the side of the side wall 92 facing the receiving space.

[0087] When the battery cell assembly 20 is installed inside the lower housing 70, the fiber composite side plate 82 can provide circumferential protection for the battery cell assembly 20. The fiber composite side plate 82 has good resistance to impact deformation. The fiber composite side plate 82 can improve the lateral extrusion resistance of the lower housing 70. By setting the anti-extrusion member 100 on the side of the sidewall 92 away from the receiving space 701 and the fiber composite side plate 82 on the sidewall 92 facing the receiving space 701, the stacked structure design of the anti-extrusion member 100 and the fiber composite side plate 82 can absorb the lateral impact force when the lower housing 70 is subjected to lateral impact force, buffering the impact force, which is conducive to further improving the lateral impact resistance of the lower housing 70, reducing the possibility of damage or failure of the battery cell assembly 20 inside the lower housing 70 due to impact, and improving the reliability of the battery device 10. At the same time, the fiber composite side plate 82 itself is relatively lightweight, which is conducive to the lightweight design of the lower housing 70.

[0088] In some examples, the fiber composite side panel 82 can be manufactured using an injection molding process. The material of the fiber composite side panel 82 can be, but is not limited to, glass fiber resin composite material or carbon fiber resin composite material. For example, the fiber composite side panel 82 can be manufactured using glass fiber resin composite material or carbon fiber resin composite material.

[0089] In some examples, the fiber composite base plate 81, fiber composite side plate 82 and outer frame 90 are manufactured separately, and then the fiber composite base plate 81, fiber composite side plate 82 and outer frame 90 are connected to form an integral structure.

[0090] In some examples, the fiber composite base plate 81 and the fiber composite side plate 82 are integrally molded structures. Exemplarily, the fiber composite base plate 81 and the fiber composite side plate 82 are made of the same material. The fiber composite base plate 81 and the fiber composite side plate 82 are integrally molded using an injection molding process.

[0091] In some examples, the fiber composite base plate 81 and the fiber composite side plate 82 are integrally molded structures. The fiber composite base plate 81, the fiber composite side plate 82, and the outer frame 90 are integrally molded by injection molding.

[0092] In some possible implementations, the support member 80 also includes a fiber composite flange 83. The top end of the fiber composite side panel 82 is connected to the fiber composite flange 83. The fiber composite flange 83 is connected to the outer frame 90.

[0093] During the connection process between the support member 80 and the outer frame 90, the support member 80 can be positioned by the fiber composite flange 83, which helps to reduce the connection difficulty between the support member 80 and the outer frame 90.

[0094] In some examples, the fiber composite flange 83 can be manufactured using injection molding. The material of the fiber composite flange 83 can be, but is not limited to, glass fiber resin composites or carbon fiber resin composites. For example, the fiber composite flange 83 can be manufactured using glass fiber resin composites or carbon fiber resin composites.

[0095] In some examples, the fiber composite base plate 81, fiber composite side plate 82, fiber composite flange 83 and outer frame 90 are manufactured separately, and then the fiber composite base plate 81, fiber composite side plate 82, fiber composite flange 83 and outer frame 90 are connected to form an integral structure.

[0096] In other examples, the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 are integrally formed, which helps to reduce the processing difficulty of the support 80 and improve the overall structural strength of the support 80.

[0097] For example, the fiber composite base plate 81, the fiber composite side plate 82, and the fiber composite flange 83 are made of the same material. The fiber composite base plate 81, the fiber composite side plate 82, and the fiber composite flange 83 are integrally molded using an injection molding process.

[0098] In some examples, at least one of the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 is connected to the outer frame 90 by injection molding, bonding, welding, or riveting.

[0099] The fiber composite base plate 81, fiber composite side plate 82 and fiber composite flange 83 can be connected to the outer frame 90 in various ways, which helps to improve the connection flexibility between the fiber composite base plate 81, fiber composite side plate 82 and fiber composite flange 83 and the outer frame 90.

[0100] In some examples, the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 are each injection molded with the outer frame 90.

[0101] In some examples, the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 are integrally molded structures. The outer frame 90 itself is an integrally molded structure. The support member 80 is placed in a corresponding mold, and then non-metallic material is injected into the mold to form the outer frame 90, resulting in an integral structure in which the support member 80 and the outer frame 90 are interconnected. The support member 80 and the outer frame 90 are connected by fusion bonding.

[0102] In some examples, at least one of the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 is bonded to the outer frame 90 by an adhesive.

[0103] In some examples, at least one of the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 is connected to the outer frame 90 by hot plate welding or ultrasonic welding.

[0104] In some examples, at least one of the fiber composite base plate 81, fiber composite side plate 82, and fiber composite flange 83 is connected to the outer frame 90 by rivets.

[0105] Please see Figure 4 and Figure 5 In some possible implementations, the outer frame 90 includes a protective base plate 91, and side walls 92 connected to the protective base plate 91 to form a space for accommodating the support member 80. The space for accommodating the support member 80 is located above the protective base plate 91. The protective base plate 91 can support the support member 80. The outer frame 90 provides protection for the support member 80 around its perimeter.

[0106] The protective base plate 91 can form a protective layer beneath the fiber composite base plate 81. When the lower housing 70 is subjected to a bottom impact, the protective base plate 91 and the fiber composite base plate 81 can work together to absorb impact energy and cushion the impact force. The stacked structure design of the protective base plate 91 and the fiber composite base plate 81 helps to further improve the bottom impact resistance of the lower housing 70 and enhance the safety of the battery device 10.

[0107] In some feasible ways, the fiber composite base plate 81 and the protective base plate 91 are connected by injection molding, bonding, welding or riveting.

[0108] The fiber composite base plate 81 and the protective base plate 91 can be connected in a variety of ways, which helps to improve the connection flexibility between the fiber composite base plate 81 and the protective base plate 91.

[0109] In some examples, the fiber composite base plate 81 and the protective base plate 91 can be injection molded. The fiber composite base plate 81 is placed in a corresponding mold, and non-metallic material is injected into the mold to form the outer frame 90. The connection between the fiber composite base plate 81 and the protective base plate 91 is achieved by injection molding fusion bonding.

[0110] In some examples, the material of the protective base plate 91 may include plastic. The material of the protective base plate 91 may not include high-strength fibers.

[0111] In some examples, the fiber composite base plate 81 and the protective base plate 91 can be bonded together with an adhesive.

[0112] In some examples, the fiber composite base plate 81 and the protective base plate 91 can be connected by hot plate welding or ultrasonic welding.

[0113] In some examples, the fiber composite base plate 81 and the protective base plate 91 can be connected by rivets.

[0114] Please see Figure 4 and Figure 5 In some possible implementations, the sidewall 92 includes a first wall 92a and a second wall 92b disposed opposite to each other, and anti-compression members 100 are provided on the side surfaces of the first wall 92a and the second wall 92b facing away from the receiving space 701.

[0115] In some examples, the outer frame 90 includes four side walls 92. Two oppositely arranged side walls 92 are defined as the first wall 92a and the second wall 92b. By providing anti-compression members 100 on the outer sides of both the first wall 92a and the second wall 92b, when the lower housing 70 is subjected to lateral impact, the anti-compression members 100 on both sides can jointly resist the lateral force. Furthermore, since the anti-compression members 100 are arranged opposite each other, the structural stability of the lower housing 70 can be improved.

[0116] Optionally, the first wall 92a and the second wall 92b can be the main stress-bearing surfaces of the lower housing 70. By providing anti-compression members 100 on the first wall 92a and the second wall 92b, a more effective force transmission path can be formed, the impact force can be dispersed, and the reliability of the battery device 10 can be improved.

[0117] In some feasible ways, the anti-extrusion component 100 is bonded, welded, locked together with the sidewall 92, or is an integral injection-molded structure.

[0118] The anti-compression component 100 and the side wall 92 can be connected in a variety of ways, which helps to improve the connection flexibility between the anti-compression component 100 and the side wall 92.

[0119] In some examples, the anti-crushing component 100 and the sidewall 92 can be bonded together with an adhesive.

[0120] In some examples, the anti-crushing component 100 and the sidewall 92 can be connected by hot plate welding or ultrasonic welding.

[0121] In some examples, the anti-crushing component 100 and the side wall 92 can be connected by bolts, snap-fit ​​connections, or riveting. Taking the snap-fit ​​connection between the anti-crushing component 100 and the side wall 92 (not shown in the figure) as an example, one of the anti-crushing component 100 and the side wall 92 can be provided with a groove, and the other can be provided with a snap-fit. One end of the groove can be open, and the other end can be provided with a locking groove. The snap-fit ​​can be inserted into the locking groove from the open end of the groove, thereby assembling the anti-crushing component 100 onto the side wall 92.

[0122] In some embodiments, the anti-extruded component 100 and the sidewall 92 are integrally injection-molded structures. Exemplarily, the material of the anti-extruded component 100 and the material of the sidewall 92 are the same. The anti-extruded component 100 and the sidewall 92 are integrally molded using an injection molding process.

[0123] Please see Figure 4 and Figure 5 In some possible implementations, the outer frame 90 includes a mounting portion 93. The mounting portion 93 is located on the side of the side wall 92 opposite to the receiving space 701, and the anti-crush member 100 is connected to the mounting portion 93.

[0124] The mounting portion 93 provided in the lower housing 70 facilitates the installation and fixation of the lower housing 70 on electrical equipment, reducing the difficulty of installation and improving installation efficiency. By connecting the anti-compression member 100 to the mounting portion 93, the force borne by the mounting portion 93 can be directly transferred to the anti-compression member 100, improving the load-bearing capacity of the mounting portion 93. Furthermore, the anti-compression member 100 can also constrain the deformation of the mounting portion 93, improving its structural strength and the reliability of the lower housing 70.

[0125] In some examples, the outer frame 90 includes four side walls 92, each including a first wall 92a and a second wall 92b disposed opposite to each other. The side surface of the first wall 92a facing away from the receiving space 701 and the side surface of the second wall 92b facing away from the receiving space 701 are provided with a mounting part 93 and an anti-compression member 100. The anti-compression members 100 on the side surface of the first wall 92a facing away from the receiving space 701 and the side surface of the second wall 92b facing away from the receiving space 701 are respectively connected to the mounting part 93.

[0126] In some examples, the mounting part 93 is a non-metallic structural component. The mounting part 93 and the side wall 92 are integrally injection molded to improve the connection strength between the mounting part 93 and the side wall 92 and to improve the impact resistance of the connection position between the mounting part 93 and the side wall 92.

[0127] In some examples, the outer frame 90 includes a protective base plate 91. The protective base plate 91 is connected to the side wall 92. Exemplarily, the protective base plate 91, the side wall 92, and the mounting portion 93 are integrally injection molded.

[0128] In some feasible embodiments, in the first direction Z, the mounting portion 93 is disposed at one end of the sidewall 92 away from the fiber composite base plate 81, and the anti-compression member 100 extends from the mounting portion 93 toward the fiber composite base plate 81.

[0129] By extending the anti-compression member 100 from the mounting part 93 toward the fiber composite base plate 81, the force borne by the mounting part 93 can be transmitted along the anti-compression member 100 to the bottom of the lower housing 70. Since the fiber composite base plate 81 itself has relatively high impact resistance, the force transmission path can be optimized and the reliability of the lower housing 70 can be improved.

[0130] In some examples, the anti-crushing member 100 extends along the first direction Z to the bottom of the lower housing 70.

[0131] This can be understood as follows: when the fiber composite base plate 81 is disposed at the bottom of the lower housing 70, the anti-compression member 100 extends along the first direction Z until its end face is flush with the surface of the fiber composite base plate 81 away from the receiving space 701. When the protective base plate 91 is disposed at the bottom of the lower housing 70, the anti-compression member 100 extends along the first direction Z until its end face is flush with the surface of the protective base plate 91 away from the receiving space 701.

[0132] By extending the anti-crushing member 100 along the first direction Z to the bottom of the lower housing 70, it is easier to distribute the force on the anti-crushing member 100 to the bottom surface of the lower housing 70, disperse the lateral impact energy, and enhance the overall rigidity and structural strength of the lower housing 70, thereby improving its reliability. In some feasible embodiments, the anti-crushing member 100 and the mounting part 93 are integrally formed.

[0133] For example, the anti-compression component 100 and the mounting part 93 are made of the same material. The anti-compression component 100 and the mounting part 93 are integrally molded using an injection molding process. Alternatively, after the anti-compression component 100 is molded, the entire anti-compression component 100 is placed into a corresponding mold, and injection molding material is injected into the mold to obtain an integral structure in which the anti-compression component 100 and the mounting part 93 are integrated.

[0134] Please see Figures 1 to 6 , Figure 6 A schematic diagram of the structure of the lower housing 70 provided in some embodiments of this application is shown.

[0135] In some feasible embodiments, the compression-resistant member 100 includes side reinforcing ribs 110.

[0136] The side reinforcing ribs 110 can improve the structural strength of the side of the lower housing 70 and enhance its resistance to lateral extrusion. When the lower housing 70 bears lateral impact forces, the side reinforcing ribs 110 can disperse the lateral impact force, buffer the impact force, and reduce the possibility of damage or failure of the battery cell assembly 20 inside the lower housing 70 due to impact.

[0137] In some examples, the side stiffener 110 and the side wall 92 are integral injection molded structures, which improves the connection strength between the side stiffener 110 and the side wall 92 and enhances the impact resistance of the connection position between the side stiffener 110 and the side wall 92.

[0138] In some examples, the side reinforcing rib 110 can be integrally injection molded with the protective base plate 91, side wall 92 and mounting part 93.

[0139] In some feasible implementations, multiple side reinforcing ribs 110 are arranged at intervals, with each side reinforcing rib 110 extending along a first direction Z. By providing multiple side reinforcing ribs 110 on the side surface of the side wall 92 opposite to the receiving space 701, with each side reinforcing rib 110 extending from the mounting portion 93 along the first direction Z to the bottom of the lower housing 70, when the lower housing 70 is subjected to compressive forces on its side, multiple side reinforcing ribs 110 can simultaneously bear the load, and the force can be transmitted from each side reinforcing rib 110 to the bottom of the lower housing 70, thereby improving the lower housing 70's ability to resist side impacts. Furthermore, by arranging the side reinforcing ribs 110 at intervals, the weight of the lower housing 70 can be reduced, achieving a lightweight design for the lower housing 70.

[0140] In some possible implementations, the protective base plate 91 includes a bottom reinforcing rib 911. The bottom reinforcing rib 911 is located below the fiber composite base plate 81. The bottom reinforcing rib 911 is connected to the fiber composite base plate 81, and side reinforcing ribs 110 extend along a first direction Z to the protective base plate 91, and the side reinforcing ribs 110 are connected to the bottom reinforcing rib 911.

[0141] For example, the protective base plate 91 includes a bottom reinforcing rib 911 to improve the structural strength of the bottom of the lower housing 70 and enhance its resistance to bottom ball impacts. By connecting the side reinforcing ribs 110 and the bottom reinforcing rib 911, a continuous force path can be formed, distributing the local forces from the sides and bottom to the entire structure and improving the structural strength of the lower housing 70. Furthermore, connecting the side reinforcing ribs 110 and the bottom reinforcing rib 911 can also form a frame structure, significantly improving the rigidity of the battery housing and reducing damage to the internal battery cell assembly 20 under external impacts.

[0142] In some examples, multiple bottom reinforcing ribs 911 are arranged in a crisscross pattern. The multiple bottom reinforcing ribs 911 enclose a perforated hole. The bottom surface of the fiber composite base plate 81 can be observed through the perforated hole.

[0143] In some examples, the plurality of bottom reinforcing ribs 911 include a plurality of first reinforcing ribs spaced apart along a second direction and a plurality of second reinforcing ribs spaced apart along a third direction, the second direction intersecting the third direction, and the first and second reinforcing ribs intersecting each other. The plurality of side reinforcing ribs 110 of the sidewall 92 are spaced apart along the second direction, and each side reinforcing rib 110 is respectively connected to one of the first reinforcing ribs.

[0144] In some feasible embodiments, the side reinforcing rib 110 has a chamfer at one end along the first direction Z near the fiber composite base plate 81.

[0145] In some examples, the chamfer can be either a rounded corner or a beveled corner.

[0146] By chamfering the ends of the side reinforcing ribs 110, stress concentration at the ends of the side reinforcing ribs 110 can be alleviated, thereby improving the structural strength of the side reinforcing ribs 110. Furthermore, when the side reinforcing ribs 110 and the outer frame 90 are integrally injection molded, chamfering the ends of the side reinforcing ribs 110 can also improve the flowability of the injection molding material, enhance the injection molding effect, and reduce processing difficulty.

[0147] Please see Figure 7 and Figure 8 , Figure 7 This application shows a schematic diagram of the structure of the lower housing 70 provided in some other embodiments. Figure 8 A front view of the lower housing 70 provided in some embodiments of this application is shown.

[0148] In some feasible embodiments, the anti-compression member 100 includes an energy-absorbing member 120, which is a hollow or semi-hollow structure, and an energy-absorbing cavity is formed inside the energy-absorbing member 120.

[0149] The energy-absorbing component 120 can absorb energy through deformation when subjected to lateral compression. The deformation can be plastic deformation or elastic deformation, thereby reducing the force transmitted to the outer frame 90 and the internal battery cell assembly 20, and reducing the possibility of damage or failure of the battery cell assembly 20 in the lower housing 70 due to impact.

[0150] In some examples, the energy absorber 120 can be configured as a hollow structure, with the energy-absorbing cavity inside being a hollow cavity. The hollow structure has high energy absorption efficiency and can reduce the weight of the anti-compression component 100, thereby facilitating the lightweight design of the lower housing 70. Alternatively, the energy absorber 120 can also be configured as a semi-hollow structure, with the energy-absorbing cavity inside the energy absorber 120 being at least partially filled with energy-absorbing material or a buffer core layer to further improve the energy absorption efficiency of the energy absorber 120.

[0151] In some feasible embodiments, the energy-absorbing component 120 includes a first side panel 1201 and a second side panel 1202 disposed opposite to each other, with the first side panel 1201 and the second side panel 1202 spaced apart to form an energy-absorbing cavity, and the first side panel 1201 fitting against the side wall 92. By setting the energy-absorbing component 120 as a plate-like structure, the first side panel 1201 of the energy-absorbing component 120 can fit against the entire side wall 92, improving the protection effect on the side of the lower housing 70 and reducing the risk of local stress concentration.

[0152] In some feasible embodiments, the energy-absorbing member 120 further includes an upper panel and a lower panel disposed opposite each other along a first direction Z, the upper panel and the lower panel being connected between the first side panel 1201 and the second side panel 1202. The energy-absorbing member 120 is configured as an energy-absorbing hollow beam formed by the upper panel, the lower panel, the first side panel 1201 and the second side panel 1202.

[0153] In some feasible ways, the energy-absorbing hollow beam is bonded to the sidewall 92, locked together, or is a one-piece injection-molded structure.

[0154] In some examples, the energy-absorbing hollow beam can be a metal structural component.

[0155] In some examples, the energy-absorbing hollow beam can be formed by sheet metal rolling, stamping, extrusion, or other methods.

[0156] In some examples, the energy-absorbing hollow beam is bonded to the sidewall 92 with an adhesive.

[0157] In some examples, the energy-absorbing hollow beam can be bolted or clipped to the side wall 92. By adopting a detachable connection method, if the energy-absorbing hollow beam is deformed or damaged, only the energy-absorbing hollow beam needs to be replaced to maintain the lower housing 70, thus reducing maintenance costs.

[0158] In some examples, the energy-absorbing hollow beam and the side wall 92 are integral injection-molded structures, that is, the first side panel 1201 of the energy-absorbing hollow beam and the side wall 92 are integrated together, which improves the connection strength between the energy-absorbing hollow beam and the side wall 92 and improves the compression resistance of the side of the lower box 70.

[0159] In some embodiments, the energy-absorbing hollow beam, the side wall 92, and the mounting part 93 are integrally injection molded bodies, that is, the first side panel 1201 of the energy-absorbing hollow beam and the side wall 92 are integrated together, and the upper panel of the energy-absorbing hollow beam and the mounting part 93 are integrated together, so as to further improve the ability of the lower box 70 to resist side impact, and at the same time improve the strength of the mounting.

[0160] Please see Figure 9 , Figure 9 A schematic diagram of the structure of the lower housing 70 provided in some embodiments of this application is shown.

[0161] In some possible implementations, the energy absorber 120 further includes a honeycomb core 1203 sandwiched between the first side panel 1201 and the second side panel 1202. The energy absorber 120 is configured to form a honeycomb panel by combining the first side panel 1201, the second side panel 1202, and the honeycomb core 1203.

[0162] In some examples, the honeycomb core is composed of numerous hexagonal cells. This structure creates maximum space utilization with minimal material while possessing excellent compressive, flexural, and shear resistance. Its porous nature allows the honeycomb core to absorb energy through cell wall deformation upon impact, significantly improving the compression resistance of the lower housing 70 side. In some feasible implementations, the honeycomb panel is bonded or locked to the sidewall 92.

[0163] In some examples, the honeycomb panel is bonded to the sidewall 92 with an adhesive.

[0164] In some examples, the honeycomb panel can be bolted or clipped to the side wall 92. By using a detachable connection method, if the honeycomb panel is deformed or damaged, only the honeycomb panel needs to be replaced to maintain the lower housing 70, thus reducing maintenance costs.

[0165] This application provides a lower housing 70 for a battery device 10. The lower housing 70 has a receiving space 701 for accommodating a battery cell assembly 20. The lower housing 70 includes a support member 80 and an outer frame 90. The support member 80 includes a fiber composite base plate 81 located on one side of the receiving space 701 along a first direction Z. The fiber composite base plate 81 is used to support the battery cell 30. The outer frame 90 is a non-metallic structural component and includes a side wall 92, which surrounds the fiber composite base plate 81 and the receiving space 701. The lower housing 70 also includes an anti-compression member 100, which is disposed on the side surface of the side wall 92 facing away from the receiving space 701.

[0166] The support member 80 also includes a fiber composite side plate 82 and a fiber composite flange 83. The fiber composite base plate 81, fiber composite side plate 82 and fiber composite flange 83 are integrally formed structures. The fiber composite side plate 82 is connected to the inner side of the outer frame 90. The fiber composite base plate 81 and fiber composite side plate 82 form a receiving space 701. The fiber composite flange 83 is connected to the outer frame 90.

[0167] The outer frame 90 also includes a protective base plate 91 and a mounting part 93. The protective base plate 91 is located below the fiber composite base plate 81, and the mounting part 93 is connected to the side wall 92. The support member 80 is integrally formed by injection molding. The support member 80 is placed into the corresponding mold, and non-metallic material is injected into the mold to integrally form the outer frame 90, resulting in an overall structure in which the support member 80 and the outer frame 90 are interconnected. The support member 80 and the outer frame 90 are connected by fusion bonding.

[0168] The compression-resistant component 100 can be a side reinforcing rib 110, an energy-absorbing hollow beam, or a honeycomb panel.

[0169] When the anti-compression component 100 is a side reinforcing rib 110, the side reinforcing rib 110 is integrally injection molded with the outer frame 90. The protective base plate 91 includes a bottom reinforcing rib 911. One end of the side reinforcing rib 110 along the first direction Z is connected to the mounting part 93, and the other end extends to the protective base plate 91. The side reinforcing rib 110 is connected to the bottom reinforcing rib 911.

[0170] When the anti-compression component 100 is an energy-absorbing hollow beam, the energy-absorbing hollow beam and the outer frame 90 are integrally injection molded. The energy-absorbing hollow beam includes an upper panel, a lower panel, a first side panel 1201 and a second side panel 1202. The first side panel 1201 is integrated with the side wall 92, and the upper panel of the energy-absorbing hollow beam and the mounting part 93 are integrated together.

[0171] When the anti-compression component 100 is a honeycomb panel, the honeycomb panel includes a first side panel 1201, a second side panel 1202, and a honeycomb core 1203 sandwiched between the first side panel 1201 and the second side panel 1202. The honeycomb panel is connected to the side wall 92 by locking.

[0172] According to some embodiments of this application, this application also provides an electrical device including a battery device 10 of any of the above-described embodiments, and the battery device 10 is used to provide electrical energy to the electrical device. The electrical device can be any of the aforementioned devices or systems that utilize the battery device 10.

[0173] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The lower housing has a receiving space. The lower housing includes a support member and an outer frame. The support member includes a fiber composite base plate located on one side of the receiving space along a first direction. The outer frame is a non-metallic structural member and includes a side wall. The side wall is arranged around the fiber composite base plate and the receiving space. A battery cell is located in the accommodating space and disposed on the fiber composite base plate; The lower housing also includes an anti-compression component, which is disposed on the side surface of the side wall opposite to the receiving space.

2. The battery device according to claim 1, characterized in that, The sidewall includes a first wall and a second wall disposed opposite to each other, and the anti-compression member is provided on the side surface of the first wall and the second wall facing away from the receiving space.

3. The battery device according to claim 1, characterized in that, The anti-extrusion component is bonded, welded, or locked to the sidewall, or is an integral injection-molded structure.

4. The battery device according to claim 1, characterized in that, The outer frame also includes a mounting part, which is located on the side of the side wall away from the receiving space, and the anti-compression member is connected to the mounting part.

5. The battery device according to claim 4, characterized in that, In the first direction, the mounting portion is disposed at one end of the sidewall away from the fiber composite base plate, and the anti-compression member extends from the mounting portion toward the fiber composite base plate.

6. The battery device according to claim 4, characterized in that, The anti-compression component and the mounting part are integrally formed.

7. The battery device according to any one of claims 1 to 6, characterized in that, The anti-extrusion component includes side reinforcing ribs.

8. The battery device according to claim 7, characterized in that, The side reinforcing ribs are multiple and arranged at intervals, with each side reinforcing rib extending along the first direction.

9. The battery device according to claim 8, characterized in that, The outer frame includes a protective base plate, the protective base plate includes a bottom reinforcing rib, the bottom reinforcing rib is located below the fiber composite base plate and is connected to the fiber composite base plate, the side reinforcing rib extends along the first direction to the protective base plate and is connected to the bottom reinforcing rib.

10. The battery device according to claim 8, characterized in that, The side reinforcing rib has a chamfer at one end along the first direction near the fiber composite base plate.

11. The battery device according to any one of claims 1 to 6, characterized in that, The anti-compression component includes an energy-absorbing component, which is a hollow or semi-hollow structure, and an energy-absorbing cavity is formed inside the energy-absorbing component.

12. The battery device according to claim 11, characterized in that, The energy-absorbing component includes a first side panel and a second side panel disposed opposite to each other, the first side panel and the second side panel being spaced apart to form the energy-absorbing cavity, and the first side panel being attached to the side wall.

13. The battery device according to claim 12, characterized in that, The energy-absorbing component also includes an upper panel and a lower panel disposed opposite to each other along a first direction, the upper panel and the lower panel being connected between the first side panel and the second side panel.

14. The battery device according to claim 12, characterized in that, The energy-absorbing component also includes a honeycomb core, which is sandwiched between the first side panel and the second side panel.

15. The battery device according to any one of claims 1 to 6, characterized in that, The support also includes a fiber composite side plate, the fiber composite base plate and the fiber composite side plate are connected to form the receiving space, and the fiber composite side plate is connected to the side of the side wall facing the receiving space.

16. A lower housing for a battery device, characterized in that, The lower housing has a receiving space for accommodating individual battery cells. The lower housing includes a support member and an outer frame. The support member includes a fiber composite base plate located on one side of the receiving space along a first direction. The fiber composite base plate is used to support the individual battery cells. The outer frame is a non-metallic structural component. The outer frame includes side walls that surround the fiber composite base plate and the receiving space. The lower housing also includes an anti-compression component, which is disposed on the side surface of the side wall opposite to the receiving space.

17. An electrical device, characterized in that, Includes the battery device as described in any one of claims 1 to 15, the battery device being used to provide electrical energy.

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