Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device, and belongs to the technical field of batteries. The battery device comprises a box body, a supporting piece and at least one battery monomer, the at least one battery monomer is accommodated in the box body, and the box body comprises a first side wall extending along a first direction and a bottom wall connected with the first side wall; the supporting piece is connected to the inner side of the first side wall, one end, in the second direction, of the supporting piece is connected with the first side wall, the other end, in the second direction, of the supporting piece is connected with the bottom wall, a first gap is formed between the supporting piece and the first side wall, and the supporting piece is provided with a reinforcing part. The reinforcing part comprises at least one first groove formed by sinking the supporting piece towards the direction of the first side wall, the first groove is located in the first gap, the groove bottom of the first groove is connected with the first side wall, the supporting piece can play a role in reinforcing the first side wall, and therefore the structural strength of the box body can be integrally improved; therefore, the dominant frequency of the battery device is improved, and the risk of failure of the battery device due to vibration is reduced.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to sustainable social development, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] In related technologies, the strength of the battery casing affects the battery's main frequency, and how to improve the casing strength to increase the battery's main frequency has always been a research focus. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the background art. Therefore, one object of this application is to provide a battery device and an electrical device to improve the strength of the battery casing.

[0005] An embodiment of the first aspect of this application provides a battery device, including: a housing, a support member, and at least one battery cell; the at least one battery cell is housed in the housing, the housing including a first sidewall extending along a first direction and a bottom wall connected to the first sidewall; the support member extends along the first direction, the support member is connected to the inner side of the first sidewall, and one end of the support member along a second direction is connected to the first sidewall, the other end of the support member along the second direction is connected to the bottom wall, and there is a first gap between the support member and the first sidewall; the support member is provided with a reinforcing portion, the reinforcing portion including at least one first groove formed by the support member recessed towards the first sidewall, the first groove being located in the first gap, and the bottom of the first groove being connected to the first sidewall; wherein, the first direction and the second direction are perpendicular to each other.

[0006] In the technical solution of this application embodiment, by providing a support member on the inner side of the first sidewall and providing a first groove on the support member, the structural strength of the support member can be improved, thereby improving the structural strength of the housing. Furthermore, connecting the bottom of the first groove to the first sidewall increases the number and area of ​​connections between the support member and the first sidewall, thereby enhancing the connection strength between the support member and the first sidewall, further improving the structural strength of the housing. By improving the structural strength of the housing, the main frequency of the battery device can be increased, thus making the main frequency of the battery device as far apart as possible from the frequency range of external excitation, reducing the risk of battery device failure due to vibration.

[0007] In some embodiments, the reinforcing portion includes a plurality of first grooves, which are spaced apart along a first direction.

[0008] By arranging multiple first grooves along the first direction, the multiple first grooves can be distributed more evenly on the support, thereby uniformly improving the structural strength of each position of the support and making the structure of the box more stable.

[0009] In some embodiments, the bottom of the first groove is provided with a first through hole, and the edge of the first through hole is welded to the first sidewall.

[0010] In this embodiment, by providing a first through hole at the bottom of the first groove, the contact position between the first sidewall and the first groove can be exposed through the first through hole, which facilitates welding between the two, improves welding quality, and reduces costs.

[0011] In some embodiments, the support includes a middle section and a first section and a second section respectively connected to both sides of the middle section along a second direction. The first section and the second section are both bent relative to the middle section. The first section is welded to the inner side of the first sidewall, and the second section is connected to the inner side of the bottom wall by a first fastener. There is a first gap between the middle section and the first sidewall.

[0012] In this embodiment, by setting a first segment, a middle segment, and a second segment, the support member can be roughly "Z" shaped, improving its structural strength. Simultaneously, a space can be formed between the middle segment and the first sidewall to facilitate the setting of the first groove. Furthermore, welding the first bent segment to the sidewall and connecting the second bent segment to the bottom wall allows the support member to be positioned between the first sidewall and the bottom wall, further enhancing the structural strength of the housing. This connection method is simple, reliable, and reduces costs.

[0013] In some embodiments, the reinforcement includes at least one first recess formed by the support member recessed toward the first sidewall; and / or, the reinforcement includes at least one first protrusion formed by the support member protruding away from the first sidewall.

[0014] This embodiment, by providing at least one of the first recess and the first protrusion, can further improve the structural strength of the support member, thereby enhancing the structural strength of the housing and ultimately increasing the main frequency of the entire battery device. Furthermore, since the first recess and the first protrusion do not need to be connected to the first sidewall, they can be localized deformations that do not significantly affect the overall dimensions of the support member. The first recess and the first protrusion reduce the amount of deformation of the support member, ensuring that the overall installation dimensional accuracy meets the installation requirements.

[0015] In some embodiments, the battery device further includes a bracket connected to the inner side of the support member away from the first sidewall, and the bracket is used to mount a conductive element.

[0016] In this embodiment, by setting a bracket on the support member, the bracket can be used to install conductive components, thereby allowing the conductive components to be installed on the side of the housing, which is beneficial for signal transmission. Furthermore, since the support member is provided with a reinforcing part, the bracket is set on the support member, which can improve the reliability of the bracket and improve the reliability of the installation of conductive components.

[0017] In some embodiments, the support includes a receiving portion that surrounds a receiving area that extends through the receiving portion in a first direction, and the receiving portion further has an opening communicating with the receiving area, the opening for allowing a conductive element to engage with the receiving area via the opening.

[0018] In this embodiment, a receiving part is provided, which has a receiving area that can engage the conductive component. An opening is provided on the receiving area, through which the conductive component can be engaged with the receiving part. The connection is reliable and easy to assemble and disassemble.

[0019] In some embodiments, the receiving portion has a first end and a second end forming an opening, the first end being provided with a first stop and the second end being provided with a second stop, the first stop protruding from the first end in a direction toward the second stop and the second stop protruding from the second end in a direction toward the first stop; and the distance between the first stop and the second stop increases from inside the receiving area to outside the receiving area in a direction perpendicular to the opening.

[0020] In this embodiment, by providing a first stop portion on the first end and a second stop portion on the second end, the first and second stop portions create an opening that gradually expands from the inside out. This reduces the accuracy requirements for positioning the conductive component within the opening during installation, facilitating the engagement of the conductive component into the receiving area. Simultaneously, the protruding first and second stop portions also act as stops for the conductive component, preventing it from detaching from the receiving area and improving the reliability of the engagement connection.

[0021] In some embodiments, the bracket further includes a body that is fitted and connected to the support member, the body being connected to the side of the receiving portion facing the bottom wall, the opening being located at the end of the receiving portion away from the body; and at least one first reinforcing rib is provided between the body and the receiving portion.

[0022] In this embodiment, by providing a first reinforcing rib, the receiving portion can be effectively supported, improving the reliability of the conductive component installation, while minimizing the weight of the bracket. Positioning the opening at the end of the receiving portion away from the bottom wall makes the opening more accessible and operable, facilitating the installation of the conductive component from above the housing.

[0023] In some embodiments, the main body is provided with a plurality of connecting holes, the second fastener passes through the connecting holes and is connected to the support member; and the main body is also provided with a second reinforcing rib, one end of the second reinforcing rib being connected to the hole wall of the connecting hole, and the other end of the second reinforcing rib being connected to the hole wall of the first reinforcing rib, the receiving part or another connecting hole.

[0024] In this embodiment, by providing multiple connection holes, the bracket can be connected to the support member via multiple second fasteners. Under conditions such as vibration, the bracket is less prone to torque attenuation and loosening, thus improving its reliability. Furthermore, it is understood that the mounting area of ​​the second fastener is typically a weak point in the structure. By providing second reinforcing ribs, the strength of the connection holes can be strengthened, thereby improving the reliability of the second fasteners, the bracket, and the support member, and ultimately enhancing the reliability of the battery device.

[0025] In some embodiments, the support includes cable ties for securing conductive elements.

[0026] In this embodiment, the cable tie has a simple structure, and using cable ties to fix the conductive components can reduce costs while achieving a reliable connection of the conductive components.

[0027] In some embodiments, the bracket is connected to the support member by a second fastener, a portion of which is located in the first gap; the first sidewall is also provided with a clearance hole for avoiding the second fastener.

[0028] In this embodiment, by providing clearance holes on the first sidewall, the problem of insufficient bracket fixing strength caused by collision or interference between the second fastener and the first sidewall is improved, thereby enhancing the reliability of the bracket. Furthermore, the size of the first gap can be minimized, making the box structure more compact.

[0029] In some embodiments, the battery device further includes an anti-abrasion element for being fitted over the conductive element, and at least a portion of the anti-abrasion element is located between the support and the conductive element.

[0030] In this embodiment, by providing anti-wear components, the conductive components can be protected, the wear between them and the bracket or weld can be improved, and the reliability of the insulation layer of the conductive components can be enhanced.

[0031] An embodiment of the second aspect of this application provides an electrical device that includes the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0032] 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

[0033] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0034] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0035] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0036] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0037] Figure 4 for Figure 2 Schematic diagram of the middle support component;

[0038] Figure 5 for Figure 4 A schematic diagram of the rear structure of the central support component;

[0039] Figure 6 This is a schematic diagram of the connection structure between the support member and the box body in some embodiments of this application;

[0040] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0041] Figure 8 for Figure 7 Schematic diagram of the mid-support structure;

[0042] Figure 9 for Figure 7 Front view of the central support;

[0043] Figure 10 for Figure 7 Cross-sectional schematic diagram of the middle support;

[0044] Figure 11 for Figure 10 A partial schematic diagram of the central support structure;

[0045] Figure 12 This is a schematic diagram of the mounting of the bracket according to some embodiments of this application;

[0046] Figure 13 for Figure 12 A magnified view of a section at point B in the middle;

[0047] Figure 14 for Figure 13 A cross-sectional view of the central support.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1000 vehicles;

[0050] Battery unit 100, controller 200, motor 300;

[0051] Battery cell assembly 10, battery cell 11, end cap 12, housing 13, electrode assembly 14;

[0052] Box body 20, first part 21, second part 22, first side wall 23, clearance hole 231, first fastener 24, bottom wall 25;

[0053] Support 400, reinforcement 410, first groove 411, first through hole 412, bending part 413, first protrusion 414, first gap 420, first welding area 430, second welding area 440, first section 450, second section 460, middle section 470.

[0054] Support 500, receiving part 510, receiving area 511, opening 512, first end 513, first stop part 5131, second end 514, second stop part 5141, body 520, connecting hole 521, first reinforcing rib 530, second reinforcing rib 540, cable tie 550, second fastener 560.

[0055] Conductive component 600, high voltage switch 610, low voltage wiring harness 620;

[0056] Abrasion-resistant parts 700. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 three cases: a exists alone, a and b exist simultaneously, and b exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0062] 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).

[0063] 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," and "circumferential" 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 are not intended to 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.

[0064] In the description of the embodiments of this application, unless otherwise expressly specified and limited, 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.

[0065] Currently, the application of rechargeable batteries is becoming increasingly widespread, judging from market trends. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, the market demand is also constantly increasing.

[0066] In related technologies, the battery casing includes side beams and a base plate connected to the side beams. Insufficient structural strength of the casing causes the battery's main frequency to fail to meet requirements. It is understandable that the strength of the battery casing affects the battery's main frequency. When the casing's strength is insufficient, the battery's main frequency is also insufficient, making it prone to resonating with the frequency of external excitations (such as the vibration frequency of a vehicle in motion), thus leading to battery failure due to resonance.

[0067] In addition, in related technologies, the battery pack or wiring harness needs to pass through the side of the battery. Under vehicle vibration, the battery pack or wiring harness is prone to wear and tear with other structural components, which can lead to damage to the insulation layer, or the torque of the fixing bolts of the battery pack may decrease and loosen.

[0068] To address one of the aforementioned problems, this application provides a battery device and an electrical device. The battery device includes: a housing, a support member, and at least one battery cell. At least one battery cell is housed within the housing. The housing includes a first sidewall extending along a first direction and a bottom wall connected to the first sidewall. The support member extends along the first direction and is connected to the inner side of the first sidewall. One end of the support member along a second direction is connected to the first sidewall, and the other end along the second direction is connected to the bottom wall. A first gap exists between the support member and the first sidewall. The support member is provided with a reinforcing portion, which includes at least one first groove formed by the support member recessed towards the first sidewall. The first groove is located within the first gap, and the bottom of the first groove is connected to the first sidewall. The first direction and the second direction are perpendicular to each other. By providing a support member inside the first sidewall and a first groove on the support member, the structural strength of the support member can be improved, thereby improving the structural strength of the housing. Furthermore, connecting the bottom of the first groove to the first sidewall increases the number and area of ​​connections between the support and the first sidewall, thereby enhancing the connection strength between the support and the first sidewall and further improving the structural strength of the housing. By increasing the structural strength of the housing, the main frequency of the battery device can be increased, thus keeping the main frequency of the battery device as far apart as possible from the frequency range of external excitation, reducing the risk of battery device failure due to vibration.

[0069] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0070] The energy storage device utilizing battery devices as a power source in this application embodiment includes one or more battery clusters to enhance the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0071] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical devices during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices. As an example, the energy storage device is an energy storage container or an energy storage cabinet.

[0072] In this application embodiment, the power-consuming device using a battery as a power source can be, but is 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.

[0073] It should be understood that the technical solutions described in the embodiments of this application are not limited to the energy storage devices and electrical devices described above, but can also be applied to all battery devices including housings and electrical devices using battery devices. However, for the sake of brevity, the following embodiments will be described using a vehicle as an example of an electrical device.

[0074] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0075] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0076] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0077] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 10 for providing voltage and capacity. The battery cell assembly 10 may include multiple battery cells 11, which are connected in series, parallel, or mixed connection via a busbar.

[0078] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0079] As an example, the battery cell assembly 10 can be a battery module, which is formed by arranging and fixing multiple battery cells 11 together to form an independent module. As an example, the battery module can be formed by bundling multiple battery cells 11 together with cable ties.

[0080] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which includes a housing 20 and one or more individual battery cells 10, with the individual battery cells 10 housed within the housing 20. The housing 20 can be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of combinations of simple cuboids, cylinders, or spheres. The material of the housing 20 can be an alloy such as aluminum alloy or iron alloy, a polymer such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0081] As an example, the battery cell assembly 10 can be a battery module, and the battery cell assembly 10 can be housed in the housing 20 by fixing the battery module in the housing 20.

[0082] As an example, the battery cell assembly 10 can also be housed in the housing 20 by directly fixing multiple battery cells 11 to the housing 20.

[0083] As an example, the housing 20 may include a first part 21 and a second part 22. The first part 21 and the second part 22 are fastened together to form a closed space inside the housing 20 to house the battery cell assembly 10. Here, "closed" refers to covering or closing, and can be either non-sealed or sealed to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cell 11. The first part 21 may be a top cover or a bottom plate.

[0084] As an example, the housing 20 may include a top cover, side walls, and a bottom wall. The top cover and bottom wall are connected to the side walls, thereby forming an enclosed space inside the housing 20 to house the battery cell assembly 10.

[0085] In some embodiments, the housing 20 can be part of the vehicle's chassis structure. For example, a portion of the housing 20 can be at least a part of the vehicle's floor, or a portion of the housing 20 can be at least a part of the vehicle's crossbeams and longitudinal beams. In this embodiment, the inner sidewall of the housing 20 may be provided with a support member 400 to improve its structural strength.

[0086] The battery cell 11 provided in the embodiments of this application can be a secondary battery. A secondary battery refers to a battery cell 11 that can be used again after being discharged by recharging to activate the active material.

[0087] The battery cell 11 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0088] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. The battery cell 11 refers to the smallest unit that makes up the battery. For example... Figure 3 The battery cell 11 includes an end cap 12, a housing 13, an electrode assembly 14, and other functional components.

[0089] End cap 12 refers to a component that covers the opening of housing 13 to isolate the internal environment of battery cell 11 from the external environment. The shape of end cap 12 can be adapted to the shape of housing 13 to fit it. In some embodiments, end cap 12 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 12 is less prone to deformation under pressure and impact, enabling battery cell 11 to have higher structural strength and improved safety performance. Functional components such as electrode terminals can be provided on end cap 12. Electrode terminals can be used for electrical connection with electrode assembly 14 for outputting or inputting electrical energy to battery cell 11. In some embodiments, end cap 12 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 11 reaches a threshold. The material of end cap 12 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 12. The insulating element can be used to isolate the electrical connection components within the housing 13 from the end cap 12 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0090] The housing 13 is a component used to cooperate with the end cap 12 to form the internal environment of the battery cell 11. This internal environment can accommodate the electrode assembly 14, electrolyte, and other components. The housing 13 and the end cap 12 can be independent components. An opening can be provided on the housing 13, and the end cap 12 closes the opening to form the internal environment of the battery cell 11. Alternatively, the end cap 12 and the housing 13 can be integrated. Specifically, the end cap 12 and the housing 13 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 13, the end cap 12 closes the housing 13. The housing 13 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 13 can be determined according to the specific shape and size of the electrode assembly 14. The housing 13 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0091] Electrode assembly 14 is the component in the battery cell 11 where the electrochemical reaction takes place. The housing 13 may contain one or more electrode assemblies 14. Electrode assembly 14 is mainly formed by winding and forming positive and negative electrode plates, and a separator is typically provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the electrode assembly.

[0092] Figure 4 for Figure 2 Schematic diagram of the middle support component; Figure 5 for Figure 4 A schematic diagram of the rear structure of the central support component; Figure 6This is a schematic diagram of the connection structure between the support member and the box body in some embodiments of this application; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; Figure 8 for Figure 7 Schematic diagram of the mid-support structure; Figure 9 for Figure 7 Front view of the central support; Figure 10 for Figure 7 A cross-sectional view of the central support.

[0093] Please refer to Figures 2 to 10 This application provides a battery device 100, including: a housing 20, a support member 400, and at least one battery cell 11; at least one battery cell 11 is housed in the housing 20, the housing 20 includes a first sidewall 23 extending along a first direction X and a bottom wall 25 connected to the first sidewall 23; the support member 400 extends along the first direction X, the support member 400 is connected to the inner side of the first sidewall 23, and one end of the support member 400 along a second direction Z is connected to the first sidewall 23, the other end of the support member 400 along the second direction Z is connected to the bottom wall 25, and there is a first gap 420 between the support member 400 and the first sidewall 23; the support member 400 is provided with a reinforcing part 410, the reinforcing part 410 includes at least one first groove 411 formed by the support member 400 recessed towards the first sidewall 23, the first groove 411 is located in the first gap 420, and the bottom of the first groove 411 is connected to the first sidewall 23; wherein, the first direction X and the second direction Z are perpendicular to each other.

[0094] In this embodiment, the housing 20 may include a first part 21 and a second part 22. The first part 21 may be a top cover, and the second part 22 may include side walls and a bottom wall 25, which together form a structure with a housing function. The battery cells may be mainly housed within the space enclosed by the bottom wall and the side walls. The support member 400 may be disposed on the inner side of the side wall of the second part 22.

[0095] In some embodiments, the sidewall includes a first sidewall 23 extending along a first direction X, and a support member 400 may be disposed on the inner side of the first sidewall 23 facing the battery cell 11. Alternatively, the housing 20 may have two first sidewalls 23 disposed opposite each other along a third direction Y, and a support member may be disposed on the inner side of each first sidewall 23. It is understood that the first sidewall 23 of the housing may be a plate-like structure or a frame beam structure with an internal cavity, depending on the actual situation.

[0096] Wherein, the first direction X can be the length direction of the box, the third direction Y can be the width direction of the box, and the second direction Z can be the height direction of the box. The first direction, the second direction, and the third direction are perpendicular to each other.

[0097] The support member 400 can also extend along the first direction. It can be understood that the length of the support member 400 extending along the first direction X can be close to the length of the first sidewall 23, thus allowing the support member 400 to cover the inner side of the first sidewall 23 as much as possible. Furthermore, the support member 400 can be made of materials such as iron or aluminum, which have high structural strength and help improve the strength of the enclosure.

[0098] One end of the support member 400 along the second direction can be connected to the first side wall 23, and the other end can be connected to the bottom wall 25. This allows the support member 400 to simultaneously serve as an auxiliary connection and support between the bottom wall and the first side wall, further improving the structural strength of the enclosure. Additionally, the support member 400 can be connected to the first side wall 23 using common methods, such as welding, riveting, or screwing. The support member 400, positioned on the inner side of the first side wall 23, reinforces it, thereby enhancing the structural strength of the enclosure.

[0099] In some embodiments, the support member 400 can also be connected to the bottom wall 25 in a common manner, such as by welding, riveting, screwing, etc.

[0100] In this embodiment, there is a first gap 420 between the support member 400 and the first side wall 23, that is, the middle position of the support member along the second direction may not be in contact with the first side wall 23, thereby forming a first gap 420 between the support member and the first side wall 23.

[0101] The support member 400 may be provided with a reinforcing part 410, which may include a first groove 411. The first groove 411 may be a groove formed by the support member 400 being recessed from the side facing away from the first sidewall 23 towards the first sidewall 23. It can be understood that the first gap 420 may allow a portion of the surface of the support member to be recessed towards the first sidewall, thereby forming the first groove 411, that is, the first groove 411 may be located in the first gap 420. The shape of the first groove 411 may be various, such as square, circular, or elliptical.

[0102] In this embodiment, the bottom of the first groove 411 can be the deepest position of the first groove 411, which can be connected to the first sidewall. For example, the bottom of the first groove 411 can contact the first sidewall 23 and be connected by common connection methods, such as welding, riveting, screwing, etc.

[0103] In addition, the number of first grooves 411 can be one or more, such as two, three, four, five, six, etc., which can be selected according to the size of the first sidewall.

[0104] It is understandable that the first groove 411 can make the support member have an uneven structure, thereby improving the structural strength of the support member.

[0105] In other embodiments, the support member 400 can be manufactured by sheet metal stamping or bending, etc., and the support member with the first groove can be formed by this method, which can further improve the structural strength of the support member.

[0106] Understandably, taking vehicles as an example, battery design typically requires that the battery's main frequency be offset from the frequency of external excitations (such as the vibration frequency of the vehicle during operation) to mitigate the risk of battery damage due to resonance. Furthermore, the battery's main frequency is related to the strength of its casing.

[0107] In this embodiment, by providing a support member on the inner side of the first sidewall and creating a first groove on the support member, the structural strength of the support member can be improved, thereby enhancing the structural strength of the housing. Furthermore, connecting the bottom of the first groove 411 to the first sidewall 23 increases the number and area of ​​connections between the support member and the first sidewall, thereby increasing the connection strength between the support member and the first sidewall, further enhancing the structural strength of the housing. By improving the structural strength of the housing, the main frequency of the battery device can be increased, thus ensuring that the main frequency of the battery device is as far removed as possible from the frequency range of external excitation, reducing the risk of battery device failure due to vibration.

[0108] Based on some embodiments of this application, continue to refer to Figures 4 to 8 The reinforcing part 410 includes a plurality of first grooves 411, which are spaced apart along a first direction.

[0109] In this embodiment, when the reinforcing part 410 includes a plurality of first grooves 411, the plurality of first grooves 411 can be arranged at intervals along the first direction X, and there can be a certain interval between two adjacent first grooves 411, thereby providing space for the installation of other components.

[0110] By arranging multiple first grooves along the first direction, the multiple first grooves can be distributed more evenly on the support, thereby uniformly improving the structural strength of each position of the support and making the structure of the box more stable.

[0111] According to some embodiments of this application, such as Figure 8 As shown, the bottom of the first groove 411 is provided with a first through hole 412, and the edge of the first through hole 412 is welded to the first sidewall 23.

[0112] In this embodiment, the first through hole 412 can be provided at the bottom of the first groove 411, which can expose part of the first sidewall 23.

[0113] It is understood that a portion of the bottom of the first groove 411 can be used to set the first through hole 412, while another portion can remain in contact with the first sidewall 23. A portion of the bottom of the groove at the edge of the first through hole 412 can be connected to the first sidewall 23 by welding (e.g., arc welding). It is understood that the welding location can be an annular weld around the first through hole, or it can be multiple weld segments spaced apart along the edge of the first through hole. Figure 8 In the first welding area 430, the cylindrical shape indicates the partial welding position between the bottom of the first groove 411 and the first sidewall.

[0114] In some embodiments, the first through hole 412 can be located at the center of the first groove, thereby making the structure of the first groove more stable and improving the structural strength of the support member.

[0115] In this embodiment, by providing a first through hole at the bottom of the first groove, the contact position between the first sidewall and the first groove can be exposed through the first through hole, which facilitates welding between the two, improves welding quality, and reduces costs.

[0116] Based on some embodiments of this application, continue to refer to Figures 3 to 8 The reinforcing portion 410 includes at least one first recess formed by the support member 400 recessed toward the first sidewall 23; and / or, the reinforcing portion 410 includes at least one first protrusion 414 formed by the support member 400 protruding away from the first sidewall 23.

[0117] It is understood that the structure of the reinforcing part 410 is not limited to the first groove 411, and it may include other undulating structures, for example, it may include one or more first protrusions 414. The first protrusions 414 may be formed by the support member protruding in a direction away from the first sidewall.

[0118] In some embodiments, when the reinforcing portion 410 includes a first protrusion 414, the first protrusion 414 may extend along the first direction X; when it includes multiple first protrusions 414, the multiple first protrusions 414 may also be arranged along the first direction X. Furthermore, the shapes and structures of the multiple first protrusions 414 may be the same or different, depending on the actual situation. Of course, in other embodiments, the multiple first protrusions 414 may also be irregularly distributed in the non-welded areas of the support member.

[0119] In some embodiments, the reinforcing portion 410 may also include one or more first recesses, which may be formed by the support member recessing towards the first sidewall. In this embodiment, the first recess may not be connected to the first sidewall.

[0120] In some embodiments, when the reinforcing portion 410 includes a first recess, the first recess may extend along a first direction X; when it includes multiple first recesses, the multiple first recesses may also be arranged along the first direction X. Furthermore, the shapes and structures of the multiple first recesses may be the same or different, depending on the actual situation. Of course, in other embodiments, the multiple first recesses may also be irregularly distributed in the non-welded areas of the support member.

[0121] It is understood that the reinforcing part 410 may include one or more of the first groove 411, the first recess, or the first protrusion. For example, the reinforcing part 410 may simultaneously include the first groove 411, the first recess, and the first protrusion.

[0122] In some embodiments, the various structures of the reinforcing part can be processed by integral molding. In other embodiments, the first groove can be integrally formed with the support by sheet metal stamping or bending. For some small first recesses or first protrusions, they can be set on the support by subsequent processing.

[0123] This embodiment, by providing at least one of the first recess and the first protrusion, can further improve the structural strength of the support member, thereby enhancing the structural strength of the housing and ultimately increasing the main frequency of the entire battery device. Furthermore, since the first recess and the first protrusion do not need to be connected to the first sidewall, they can be localized deformations that do not significantly affect the overall dimensions of the support member. The first recess and the first protrusion reduce the amount of deformation of the support member, ensuring that the overall installation dimensional accuracy meets the installation requirements.

[0124] According to some embodiments of this application, please refer to Figures 4 to 10 The support member 400 includes a middle section 470 and a first section 450 and a second section 460 respectively connected to both sides of the middle section 470 along the second direction. The first section 450 and the second section 460 are both bent relative to the middle section 470. The first section 450 is welded to the inner side of the first sidewall 23, and the second section 460 is connected to the inner side of the bottom wall 25 by a first fastener 24. There is a first gap 420 between the middle section 470 and the first sidewall 23.

[0125] In this embodiment, the support member 400 may include a middle section 470, and a first section 450 and a second section 460 located on both sides of the middle section 470 along the second direction Z. It is understood that the first section 450 may be bent relative to the middle section 470; for example, the two can be bent together by a bending portion 413. The bending portion 413 may be a convex or concave ridge, etc. The second section 460 may also be bent relative to the middle section 470; for example, the two can be bent together by a bending portion.

[0126] The first segment 450 can be approximately parallel to the first sidewall 23, thus fitting snugly against the first sidewall 23. The two can be directly connected by welding (e.g., arc welding).

[0127] It is understandable that the welding position can be a single weld along the first direction X, or it can be multiple welds spaced apart along the first direction X. Figure 7 The second welding zone 440 is marked with a cylindrical mark to indicate the partial welding position between the first section 450 and the middle section 470.

[0128] The second segment 460 can be approximately parallel to the bottom wall 25, so that it can fit against the inner side of the bottom wall 25. In addition, the second segment 460 and the bottom wall 25 can be connected by at least one first fastener 24, which can be a bolt or rivet or other fastener. Figure 7 The diagram shows a plurality of first fasteners 24 arranged along the first direction X.

[0129] The intermediate section may protrude relative to the first sidewall 23, thereby creating a first gap 420 between the intermediate section 470 and the first sidewall 23. The size and shape of the first gap can be set according to the actual situation. The intermediate section may also have one or more bends, thereby forming a multi-segment structure.

[0130] In addition, in some embodiments, the first groove 411 may be provided in the middle section 470, and the first protrusion and the first recess may be provided on at least one of the first section, the middle section, and the second section.

[0131] In this embodiment, by setting a first segment, a middle segment, and a second segment, the support member can roughly include a "Z" shaped structure, improving the structural strength of the support member. Simultaneously, a space can be formed between the middle segment and the first sidewall to facilitate the setting of the first groove. Furthermore, welding the first bent segment to the sidewall and connecting the second bent segment to the bottom wall allows the support member to be positioned between the first sidewall and the bottom wall, further improving the structural strength of the housing. The connection method is simple and reliable, reducing costs.

[0132] Figure 11 for Figure 10 A partial schematic diagram of the stent; please refer to... Figures 7 to 11 According to some embodiments of this application, the battery device 100 further includes a bracket 500, which is connected to the inner side of the support member 400 away from the first sidewall 23, and the bracket 500 is used to mount the conductive member 600.

[0133] In this embodiment, the bracket 500 can be disposed on the support member 400, for example, it can be installed on the inner side of the support member 400 facing the battery cell 11. There are various ways to connect the two, such as by screws, bolts, rivets or clips.

[0134] In addition, one or more brackets 500 can be provided on the support member 400. In the case of multiple brackets 500, they can be arranged along the first direction X.

[0135] In some embodiments, such as Figure 7 As shown, multiple first grooves 411 can be arranged at intervals along a first direction, and a first bracket can be set on a support member 400 between two adjacent first grooves 411, so that the bracket can be set at the non-reinforcing part position on the support member 400, which facilitates the installation of the bracket.

[0136] The bracket 500 can be used to mount the conductive component 600, which can be a component capable of conducting electricity, such as a wire harness or a strip, for transmitting electrical signals. Of course, in other embodiments, the bracket 500 can also be used to mount other components that need to be fixed to the side wall of the enclosure.

[0137] It is understandable that the area between the battery cell and the first side wall of the casing can be used to install the conductive element 600, and the conductive element can also extend approximately along the first direction X.

[0138] The bracket 500 can have various structures, which can be set according to the shape of the conductive component to be installed. For example, the bracket 500 can be set to a structure that can engage with the conductive component, or the bracket 500 can be equipped with fastening components such as screws or rivets to fix the conductive component 600.

[0139] In this embodiment, by setting a bracket on the support member, the bracket can be used to install conductive components, thereby allowing the conductive components to be installed on the side of the housing, which is beneficial for signal transmission. Furthermore, since the support member is provided with a reinforcing part, the bracket is set on the support member, which can improve the reliability of the bracket and improve the reliability of the installation of conductive components.

[0140] In some embodiments, the surface of the bracket 500 facing the battery cell 11 may be provided with a cushioning component such as foam to reduce the collision or friction between the bracket and the battery cell.

[0141] According to some embodiments of this application, the bracket 500 includes a receiving portion 510, the receiving portion 510 surrounds a receiving area 511, the receiving area 511 extends through the receiving portion 510 along a first direction X, and the receiving portion 510 is also provided with an opening 512 communicating with the receiving area 511, the opening 512 being used to allow the conductive component 600 to engage with the receiving area 511 through the opening 512.

[0142] In this embodiment, the receiving portion 510 may have a receiving area 511, which may extend through the receiving portion 510 along the first direction X, that is, the two ends of the receiving area 511 along the first direction may have openings. The cross-sectional shape of the receiving area 511 in the YZ plane can be set according to the conductive element 600.

[0143] In some embodiments, the conductive element can be formed by processing a material with a certain deformability (such as plastic, metal, etc.) through injection molding, casting, or other processes, so that it can be snapped into place with the conductive element.

[0144] Additionally, the receiving area 511 also has an opening 512. It can be understood that the opening 512 can be located at one end of the receiving area 511 that differs from the first direction; that is, the opening 512 is different from the openings at both ends of the receiving area in the first direction. However, the opening 512 can communicate with the openings. For example... Figure 10 As shown, the receiving area 511 has an opening at its top along the second direction Z, while two openings may be located at both ends of the receiving area 511 along the first direction.

[0145] It is understood that the conductive element 600 can enter the receiving area 511 through the opening 512 and can engage with the receiving area 511. The cross-sectional shape of the receiving area 511 can match the cross-sectional shape of the conductive element, so that the conductive element can be engaged in the receiving area 511.

[0146] In some embodiments, the conductive element 600 may extend into a long strip along the first direction X, and the support member 400 may be provided with a plurality of brackets 500 at intervals along the first direction. The conductive element can be fixed by engaging the conductive element 600 with the plurality of brackets.

[0147] In some embodiments, when the cross-section of the conductive element 600 is rectangular, such as when it is a high-voltage switch 610, the cross-sectional shape of the receiving area 511 can also be rectangular. The width and depth of the rectangle can be adjusted according to the shape of the high-voltage switch. It is understood that the high-voltage switch may include a first switch connected to the positive electrode and a second switch connected to the negative electrode. The outer layers of both the first and second switches can be covered with an insulating layer, and they can be separated by a buffer to reduce mutual wear between them.

[0148] In other embodiments, the cross-section of the conductive element 600 can also be circular, for example, it can be a circular wire harness, and the cross-section of the receiving area 511 can also be an arc shape matching the wire harness. In addition, the central angle of the arc shape can be greater than 180 degrees and less than 360 degrees, thereby allowing for the provision of an opening while increasing the contact area between the conductive element and the receiving part, and improving the engagement strength.

[0149] In this embodiment, a receiving part is provided, which has a receiving area that can engage the conductive component. An opening is provided on the receiving area, through which the conductive component can be engaged with the receiving part. The connection is reliable and easy to assemble and disassemble.

[0150] According to some embodiments of this application, the receiving portion 510 has a first end portion 513 and a second end portion 514 forming an opening 512. The first end portion 513 is provided with a first stop portion 5131, and the second end portion 514 is provided with a second stop portion 5141. The first stop portion 5131 protrudes from the first end portion 513 in a direction toward the second stop portion 5141, and the second stop portion 5141 protrudes from the second end portion 514 in a direction toward the first stop portion 5131. The distance L between the first stop portion 5131 and the second stop portion 5141 increases from inside the receiving area 511 to outside the receiving area 511 in a direction perpendicular to the opening.

[0151] In this embodiment, the first end 513 and the second end 514 can be partial receiving portions located at both ends of the opening in the YZ plane.

[0152] like Figure 11 The first end 513 may be provided with a first stop 5131 protruding out, and the second end 514 may be provided with a second stop 5141 protruding out. The first stop 5131 and the second stop 5141 may be arranged opposite to each other. The distance L between them may increase along the direction of the vertical opening 512 from inside the receiving area to outside the receiving area (from bottom to top in the figure), so that the opening presents a structure that is wider on the outside and narrower on the inside, which plays a guiding role and is conducive to engaging the conductive component into the receiving area.

[0153] Furthermore, the first and second stop members can have various shapes. For example, when used to fix a conductive component with a rectangular cross-section, it can be an inverted triangular structure. Or, for example, when used to fix a conductive component with a circular cross-section, it can be an arc-shaped structure.

[0154] In this embodiment, by providing a first stop portion on the first end and a second stop portion on the second end, the first and second stop portions create an opening that gradually expands from the inside out. This reduces the accuracy requirements for positioning the conductive component within the opening during installation, facilitating the engagement of the conductive component into the receiving area. Simultaneously, the protruding first and second stop portions also act as stops for the conductive component, preventing it from detaching from the receiving area and improving the reliability of the engagement connection.

[0155] According to some embodiments of this application, the bracket 500 further includes a body 520 that is attached to the support member 400. The body 520 is connected to the side of the receiving portion 510 facing the bottom wall 25, and the opening 512 is located at the end of the receiving portion 510 away from the body 520. At least one first reinforcing rib 530 is provided between the body 520 and the receiving portion 510.

[0156] It is understood that the body 520 can be located at the bottom of the receiving portion 510, and the body 520 can be fitted and installed on the support member 400, for example, in a flat area between two adjacent first grooves of the support member.

[0157] The opening on the receiving part 510 can be located at one end away from the main body 520, making the opening 512 more accessible and facilitating the installation of conductive components from the top of the housing.

[0158] The body 520 and the receiving part may have a first reinforcing rib 530, and the number of the first reinforcing ribs may be one, two or more. It is understood that the shape and structure of the first reinforcing rib 530 may be various.

[0159] In some embodiments, such as Figure 8 The main body 520 can be plate-shaped and can be fixed to the support member 400. The receiving portion 510 can be flush with the main body 520 on one side along the third direction Y, and the receiving portion 510 can protrude from the main body 520 in a direction away from the support member on the other side along the third direction Y. The first reinforcing rib 530 can be triangular and can be arranged perpendicular to the first direction. The first reinforcing rib 530 can be connected between the bottom of the receiving portion 510 and the side of the main body 520. In addition, there can be two first reinforcing ribs 530, and the two first reinforcing ribs 530 can be respectively connected to the two sides of the main body 520 along the first direction X.

[0160] In other embodiments, the first reinforcing rib may also be a shape or other structure, which can be set according to requirements. Alternatively, there may be more than one first reinforcing rib, such as three, four, or five, and multiple first reinforcing ribs may be spaced apart along the first direction.

[0161] It is understandable that brackets, especially plastic brackets, may deform or break during vehicle vibrations. In this embodiment, by providing a first reinforcing rib, the receiving portion can be effectively supported, improving the reliability of the conductive component installation. Simultaneously, the weight of the bracket can be minimized. Positioning the opening at the end of the receiving portion away from the bottom wall makes the opening more accessible and operable, facilitating the installation of the conductive component from above the housing.

[0162] According to some embodiments of this application, please refer to Figure 9The main body 520 is provided with multiple connecting holes 521, and the second fastener 560 passes through the connecting holes 521 and is connected to the support member 400; and the main body 520 is also provided with a second reinforcing rib 540, one end of the second reinforcing rib 540 is connected to the hole wall of the connecting hole 521, and the other end of the second reinforcing rib 540 is connected to the first reinforcing rib 530, the receiving part 510 or the hole wall of another connecting hole 521.

[0163] The body 520 may be provided with multiple connecting holes 521 for mounting a second fastener 560, and each connecting hole 521 can be used to pass through one second fastener 560. For example... Figure 9 The main body can be provided with two connection holes, and each connection hole can be provided with a second fastener 560. The second fastener 560 can be a screw, rivet, or other structure.

[0164] It is understandable that the connecting hole can be located between two adjacent first grooves, allowing the second fastener to be installed in a flat position and improving the connection strength. By setting multiple connecting holes, the bracket can be connected to the support member through multiple second fasteners. Under conditions such as vibration, the problem of torque attenuation and loosening is less likely to occur, which helps to improve the reliability of the bracket.

[0165] In addition, the main body 520 may also be provided with a second reinforcing rib 540, and the number of such ribs may be one or more.

[0166] The second reinforcing rib 540 can also be strip-shaped or plate-shaped, with one end extending to the wall of the connecting hole and the other end extending to connect with the first reinforcing rib 530, or connecting with the bottom of the receiving part 510, or contacting the wall of another connecting hole. It is understood that the periphery of the connecting hole 521 can have an annular boss extending circumferentially, and the inner surface of the annular boss can form part of the hole wall, thereby increasing the thickness of the connecting hole 521 and further improving the connection strength. Simultaneously, the second reinforcing rib can connect to the hole wall of the connecting hole through the annular boss, thereby further strengthening the connecting hole.

[0167] like Figure 9 In this device, there can be multiple second reinforcing ribs, which can be arranged in a crisscross structure. For example, they can extend from the connecting hole along the first direction X to the first reinforcing ribs on both sides of the bracket, or they can extend upward from the connecting hole along the second direction Z to the receiving part, or they can extend downward along the second direction to the bottom end of the bracket or another connecting hole position, thereby strengthening the connection position of the second fastener.

[0168] In this embodiment, by providing multiple connection holes, the bracket can be connected to the support member via multiple second fasteners. Under conditions such as vibration, the bracket is less prone to torque attenuation and loosening, thus improving its reliability. Furthermore, it is understood that the mounting area of ​​the second fastener is typically a weak point in the structure. By providing second reinforcing ribs, the strength of the connection holes can be strengthened, thereby improving the reliability of the second fasteners, the bracket, and the support member, and ultimately enhancing the reliability of the battery device.

[0169] Figure 12 This is a schematic diagram of the mounting of the bracket according to some embodiments of this application; Figure 13 for Figure 12 A magnified view of a section at point B in the middle; Figure 14 for Figure 13 A cross-sectional view of the central support structure. Please refer to the diagram. Figures 12 to 14 According to some embodiments of this application, the bracket 500 includes cable ties for securing the conductive element 600.

[0170] In this embodiment, the bracket 500 can also be a cable tie, which can be integrally machined with tree-shaped rivets. The tree-shaped rivets can be connected to the support member 400. The cable tie can be a common structure that can be bundled and tightened. It can surround the conductive member and, by tightening, can be firmly connected to the conductive member.

[0171] like Figure 13 In this configuration, the conductive component 600 may include a low-voltage wiring harness 620, and cable ties (not tightened in the illustration) can be used to bundle the low-voltage wiring harness 620. It is understood that the low-voltage wiring harness 620 can pass through both sides of the enclosure. To improve the problem of insulation abnormalities caused by wear of the external insulation layer during vehicle operation due to vibration, cable ties can be used to provide reasonable restraint to the low-voltage wiring harness. By installing cable ties through holes in the supports on both sides of the enclosure, and then fixing the low-voltage wiring harness to the supports using the cable ties, wear on the low-voltage wiring harness can be reduced.

[0172] In some embodiments, the number of cable ties can be adjusted according to the length of the conductive component. For example, the distance between two adjacent cable ties can be set to 100mm-200mm, such as 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, etc.

[0173] Of course, it is understood that this embodiment uses cable ties to fix low-voltage wire harnesses as an example for illustration. In other embodiments, cable ties can also be used to bundle high-voltage transformers and other conductive components. Additionally, in Figure 8 In the embodiment of the bracket shown, the receiving portion at the top of the bracket can also be configured to match the shape of the low-voltage wire harness for installing the low-voltage wire harness, and the specific configuration can be determined according to the actual situation.

[0174] In some embodiments, the housing 20 may be provided with support members 400 on both sides along a third direction. One side of the support member may be provided with a bracket with a receiving portion for installing high voltage bar 610, and the other side of the support member may be provided with a cable tie bracket for installing low voltage wire harness 620.

[0175] In this embodiment, the cable tie has a simple structure, and using cable ties to fix the conductive components can reduce costs while achieving a reliable connection of the conductive components.

[0176] Based on some embodiments of this application, continue to refer to Figure 10 The bracket 500 is connected to the support member 400 via the second fastener 560, and part of the second fastener 560 is located in the first gap 420; the first sidewall 23 is also provided with a clearance hole 231 for avoiding the second fastener 560.

[0177] In this embodiment, the second fastener 560 may pass through the support member 400 and be partially located in the first gap 420.

[0178] In some embodiments, such as Figure 10 As shown, the first sidewall 23 can be a frame beam structure with a cavity. A clearance hole 231 can be provided at the position corresponding to the second fastener 560. The clearance hole 231 allows the second fastener to pass through, thereby improving the problem of insufficient support fixing strength caused by collision or interference between the second fastener and the first sidewall, and improving the reliability of the support.

[0179] It is understandable that each second fastener 560 can be provided with a corresponding clearance hole, thereby minimizing the opening area on the first sidewall and improving the strength of the first sidewall.

[0180] In this embodiment, by providing clearance holes on the first sidewall, the problem of insufficient bracket fixing strength caused by collision or interference between the second fastener and the first sidewall is improved, thereby enhancing the reliability of the bracket. Furthermore, the size of the first gap can be minimized, making the box structure more compact.

[0181] Of course, in other embodiments, a second gap may be reserved between the second fastener and the first sidewall, thereby reducing the possibility of interference or collision between the two and reducing the impact on the structural strength of the first sidewall.

[0182] According to some embodiments of this application, such as Figure 11 The battery device 100 may also include an anti-wear member 700, which is used to be sleeved on the outside of the conductive member 600, and at least a portion of the anti-wear member 700 is located between the support and the conductive member.

[0183] The wear-resistant component 700 can be a sleeve-like structure, which can be sleeved on the outside of the conductive component 600. It can be understood that the wear-resistant component 700 can be located between the conductive component and the support, which can reduce the wear between the conductive component and the support or the weld, thereby protecting the insulation layer of the conductive component and improving the insulation capability of the conductive component.

[0184] It is understood that the anti-wear component 700 can be a structure with the same extension direction and length as the conductive component, so that one anti-wear component can be provided on the outside of each conductive component. Alternatively, the number of anti-wear components 700 can be the same as the number of brackets, so that one anti-wear component 700 can be provided at the connection between each bracket and the conductive component.

[0185] It is understandable that during vehicle operation, vibration and other conditions may cause wear to conductive components, leading to insulation abnormalities. In this embodiment, by setting anti-wear components, conductive components can be protected, improving the wear between them and brackets or welds, and enhancing the reliability of the insulation layer of conductive components.

[0186] This application provides an electrical device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to provide electrical energy.

[0187] Electrical devices include vehicles (such as cars, electric vehicles, ships, spacecraft, etc.), display devices (such as mobile phones, tablets, laptops, etc.), electric toys, power tools, etc.

[0188] It is understood that the electrical device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0189] This application provides an energy storage device, which includes the battery device 100 in the above embodiments, and the battery device 100 is used to store electrical energy.

[0190] Energy storage devices can include, but are not limited to, centralized energy storage devices (such as containerized energy storage devices), distributed energy storage devices, mobile energy storage devices, wearable energy storage devices, and so on.

[0191] It is understood that the energy storage device provided in this application, by using any of the aforementioned battery devices 100, has all the beneficial effects of the aforementioned battery devices 100, which will not be elaborated here.

[0192] In some embodiments, please refer to Figures 2 to 14The battery device 100 may include a housing 20, a support member 400, and at least one battery cell 11. At least one battery cell 11 is housed in the housing 20. The housing 20 includes a first sidewall 23 extending along a first direction X and a bottom wall 25 connected to the first sidewall 23. The support member 400 extends along the first direction X and is connected to the inner side of the first sidewall 23. One end of the support member 400 along a second direction Z is connected to the first sidewall 23, and the other end of the support member 400 along the second direction Z is connected to the bottom wall 25. A first gap 420 exists between the support member 400 and the first sidewall 23. The support member 400 is provided with a reinforcing part 410. The reinforcing part 410 includes at least one first groove 411 formed by the support member 400 recessed toward the first sidewall 23. The first groove 411 is located in the first gap 420, and the bottom of the first groove 411 is connected to the first sidewall 23. The first direction X and the second direction Z are perpendicular to each other.

[0193] In this embodiment, the support member can be located on both sides of the box body along the third direction Y. The support member 400 can be a beam structure formed by sheet metal stamping or bending. Its top can be welded to the first side wall 23, and its bottom can be connected to the bottom wall by the first fastener (rivet nut).

[0194] The reinforcing part may include a first groove 411 formed by stamping the middle part of the support member. The first groove can fit together with the first side wall. A first through hole 412 can be provided at the bottom of the groove. The support member is welded to the first side wall 23 at the edge of the first through hole 412, thereby enhancing the structural strength.

[0195] In this embodiment, the support member 400 is equipped with a bracket 500, which can be used to connect conductive components 600, such as high-voltage transformers 610. It is understood that the high-voltage transformers pass through both sides of the housing. To mitigate the problem of damage to the outer insulation layer of the high-voltage transformers during vibration, brackets 500 can be provided on the support member to fix the high-voltage transformers.

[0196] In some embodiments, the bracket may include a receiving portion at the top and a body 520 at the bottom of the receiving portion. The body may have a connecting hole 521, and the bracket is then secured to the support member using second fasteners (e.g., rivets). The number of second fasteners can be 2-3. It is understood that using only one second fastener may cause the bracket to rotate, while using too many second fasteners will increase the bracket's size and design material costs. Furthermore, the connecting hole can be positioned as close to the center of the bracket as possible to improve overall installation stability and strength.

[0197] The receiving part is provided with a receiving area 511. In order to accommodate the high-pressure bar, the receiving area 511 can be a rectangular channel. The opening 512 of the receiving area 511 can be provided with a first stop and a second stop. The first stop and the second stop can be a triangular barb structure. The high-pressure bar 610 can be engaged into the receiving area through the opening 512. The triangular barb structure can hold the high-pressure bar and prevent the high-pressure bar from moving up and down in the second direction.

[0198] In some embodiments, the support 500 may also be provided with horizontal and vertical reinforcing ribs to improve its structural strength.

[0199] For example, a first reinforcing rib 530 can be provided between the receiving part and the body. The first reinforcing rib can be a triangular reinforcing structure.

[0200] For example, a second reinforcing rib 540 can be provided between the wall of the connecting hole 521 and the wall of another connecting hole (or the receiving part, the first reinforcing rib 530). The second reinforcing rib can be a strip structure, thereby improving the structural strength of the support.

[0201] In this embodiment, the support member generally comprises a "Z"-shaped structure. Additionally, the reinforcing portion may include a first protrusion that arches outward or a first recess that is recessed inward at a non-welded location, further enhancing the overall structural strength and reducing the deformation of the support member, ensuring that the overall installation dimensional accuracy meets installation requirements.

[0202] In this embodiment, by using support members on both sides of the housing and setting brackets on the support members, the structural strength of the housing can be increased, the main frequency of the battery pack can be improved, and the risk of structural failure during battery pack vibration can be reduced. The brackets can also be used to fix high-voltage circuit boards or wiring harnesses, thereby improving the problem of insulation abnormalities caused by friction damage to the external insulation layer between conductive components and surrounding structural components during vehicle driving vibration.

[0203] 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: At least one battery cell; A housing, in which at least one battery cell is housed, the housing including a first sidewall extending along a first direction and a bottom wall connected to the first sidewall; A support member extends along a first direction and is connected to the inner side of the first sidewall. One end of the support member along a second direction is connected to the first sidewall, and the other end of the support member along the second direction is connected to the bottom wall. A first gap exists between the support member and the first sidewall. The support member is provided with a reinforcing portion, which includes at least one first groove formed by the support member recessed toward the first sidewall. The first groove is located in the first gap, and the bottom of the first groove is connected to the first sidewall. Wherein, the first direction and the second direction are perpendicular to each other.

2. The battery device according to claim 1, characterized in that, The reinforcing portion includes a plurality of the first grooves, which are spaced apart along the first direction.

3. The battery device according to claim 1, characterized in that, The bottom of the first groove is provided with a first through hole, and the edge of the first through hole is welded to the first sidewall.

4. The battery device according to claim 1, characterized in that, The support member includes a middle section and a first section and a second section respectively connected to both sides of the middle section along the second direction. The first section and the second section are both bent relative to the middle section. The first section is welded to the inner side of the first sidewall, and the second section is connected to the inner side of the bottom wall by a first fastener. The middle section and the first sidewall have the first gap.

5. The battery device according to claim 1, characterized in that, The reinforcing portion includes at least one first recess formed by the support member recessed toward the first sidewall; And / or, The reinforcing portion includes at least one first protrusion formed by the support member protruding in a direction away from the first sidewall.

6. The battery device according to any one of claims 1-5, characterized in that, Also includes: A bracket is connected to the inner side of the support member away from the first sidewall, and the bracket is used to install conductive components.

7. The battery device according to claim 6, characterized in that, The bracket includes a receiving portion that forms a receiving area. The receiving area extends through the receiving portion along the first direction, and the receiving portion is also provided with an opening communicating with the receiving area. The opening is used to allow the conductive component to engage with the receiving area through the opening.

8. The battery device according to claim 7, characterized in that, The receiving portion has a first end and a second end forming the opening. The first end is provided with a first stop, and the second end is provided with a second stop. The first stop protrudes from the first end in a direction toward the second stop, and the second stop protrudes from the second end in a direction toward the first stop. Furthermore, the distance between the first stop and the second stop increases from inside the receiving area to outside the receiving area in a direction perpendicular to the opening.

9. The battery device according to claim 7, characterized in that, The bracket also includes a body that fits and is connected to the support member. The body is connected to the side of the receiving portion facing the bottom wall, and the opening is located at the end of the receiving portion away from the body. At least one first reinforcing rib is provided between the body and the receiving portion.

10. The battery device according to claim 9, characterized in that, The main body is provided with multiple connection holes, and the second fastener passes through the connection holes and is connected to the support member; Furthermore, the main body is provided with a second reinforcing rib, one end of which is connected to the wall of the connecting hole, and the other end of which is connected to the first reinforcing rib, the receiving part, or the wall of another connecting hole.

11. The battery device according to claim 6, characterized in that, The bracket includes cable ties for securing the conductive components.

12. The battery device according to claim 6, characterized in that, The bracket is connected to the support member by a second fastener, and a portion of the second fastener is located in the first gap. The first sidewall is also provided with a clearance hole for avoiding the second fastener.

13. The battery device according to claim 6, characterized in that, It also includes a wear-resistant component, which is used to be sleeved on the outside of the conductive component, and at least a portion of the wear-resistant component is located between the bracket and the conductive component.

14. An electrical appliance, characterized in that, The electrical device includes a battery device as described in any one of claims 1-13, the battery device being used to provide electrical energy.

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