Battery device, power utilization device and energy storage device

Abstract

The utility model provides a battery device, a power utilization device and an energy storage device, and belongs to the technical field of batteries. The battery device comprises a box body, a bracket, a buffer piece and at least one battery monomer, the at least one battery monomer is inversely mounted in the box body, and the box body is provided with a beam body positioned on one side of the at least one battery monomer; the bracket is located in the box body, the bracket is connected to one side, deviating from at least one battery monomer, of the beam body, the bracket comprises a bracket body and a connecting part connected with the bracket body, the connecting part is connected to the beam body, and the bracket body is used for mounting a plug end of an electrical component in the battery device; the buffering piece is connected between the support body and the beam body so as to fill a gap between the support body and the beam body in the direction, facing the beam body, of the support body. The buffer piece can fill the gap between the buffer piece and the beam body, so that the relative shake between the bracket and the beam body can be reduced, the connection reliability between the plugging end of the electrical component and the wiring harness plugging piece and the like is improved, and the reliability of signal transmission is enhanced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device, an electrical device, and an energy storage 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, a flexible circuit board capable of collecting signals such as temperature is installed in the battery. The connector of the flexible circuit board is fixed to the bracket of the housing and plugs into the wiring harness connector. How to improve the fixing effect of the connector to achieve reliable signal transmission has always been a problem worthy of attention. Utility Model Content

[0004] This application aims to at least address one of the technical problems existing in the background art. Therefore, one objective of this application is to provide a battery device, power-consuming device, and energy storage device to improve the fixing effect of the joints of flexible circuit boards in the related art.

[0005] An embodiment of the first aspect of this application provides a battery device, including: a housing, a bracket, a buffer, and at least one battery cell; the at least one battery cell is inverted and installed in the housing, and the housing has a beam located on one side of the at least one battery cell; the bracket is located in the housing and is connected to the side of the beam opposite to the at least one battery cell, the bracket includes a bracket body and a connecting portion connected to the bracket body, the connecting portion being connected to the beam, the bracket body being used to install the plug terminals of electrical components in the battery device; the buffer is connected between the bracket body and the beam to fill the gap between the bracket body and the beam in the direction facing the beam.

[0006] In this embodiment, a buffer can be used to fill the gap between the bracket and the beam caused by installation, thereby improving the bracket's sway relative to the beam, enhancing the fixation effect of the connector, and thus improving the reliability of signal transmission. Furthermore, the bracket can be connected to the outside of the beam away from the battery cell, and electrical components can extend to the beam and bend upwards, allowing for fixation using the side of the beam. This utilizes the space outside the beam to arrange the connector and wiring harness, improving the space utilization of the enclosure and reducing its volume. It also facilitates the installation of the bracket and the connection of the connector. Additionally, isolating the wiring harness from the battery cell through the beam improves the reliability of signal transmission.

[0007] In some embodiments, the connecting portion includes a nail body and a plurality of flexible ribs. The nail body is connected to the support body, and the plurality of flexible ribs are spaced apart on the side surface of the nail body along the extension direction of the nail body, and the flexible ribs extend circumferentially along the nail body. The beam body has a mounting hole, the nail body passes through the mounting hole, and at least one of the plurality of flexible ribs is interference-fitted into the mounting hole.

[0008] In this embodiment, the bracket and beam can be installed using nails and flexible ribs, resulting in high installation efficiency. Furthermore, the bracket can adapt to various beams with different apertures, demonstrating good versatility. Additionally, by incorporating a buffer, which provides both thrust and tension, the bracket can adapt to various complex working conditions, leading to a more stable connection with the beam.

[0009] In some embodiments, the distance between the flexible rib and the support body gradually decreases in the direction from the end of the flexible rib connected to the nail body to the other end of the flexible rib away from the nail body.

[0010] In this embodiment, by setting the flexible ribs as a gradually expanding structure facing the support body, the flexible ribs can abut against the beam, thereby improving the connection reliability between the connection part and the beam.

[0011] In some embodiments, the buffer can deform under the action of external force.

[0012] In this embodiment, since the buffer can deform under external force, when the bracket is connected to the beam, the buffer can be squeezed and provide a reaction force to the bracket and the beam to absorb the gap between the bracket and the beam caused by installation. It can also adapt to different sizes of installation gaps through deformation, making the connection between the bracket and the beam more stable. This can improve the situation of the bracket swaying relative to the beam, improve the fixing effect of the plug end, and thus improve the reliability of signal transmission.

[0013] In some embodiments, the buffer has a first surface and a second surface disposed opposite to each other, the first surface being bonded to the beam and the second surface being bonded to the support body.

[0014] In this embodiment, by bonding the buffer between the beam and the support body, the buffer can absorb the gap between the beam and the support body, so that the support maintains a force balance, thereby improving the stability of the support, thus improving the swaying of the support relative to the beam, improving the fixing effect of the plug end, and thus improving the reliability of signal transmission.

[0015] In some embodiments, the cushioning element includes foam with adhesive layers on both sides.

[0016] In this embodiment, by setting adhesive layers on both sides of the foam, the bonding connection between the buffer and the beam and the support body can be achieved, which can absorb the installation gap, and the structure is simple and the cost is lower.

[0017] In some embodiments, the buffer includes a protrusion integrally formed on the side of the support body facing the beam, and the protrusion is bonded to the beam.

[0018] In this embodiment, by integrally molding the protrusion with the bracket, the assembly steps can be simplified and the assembly efficiency improved. By bonding the buffer to the beam, the buffer can absorb the gap between the beam and the bracket body through the thrust or tension between the buffer and the beam, so that the bracket maintains a force balance, thereby improving the stability of the bracket, thus improving the swaying of the bracket relative to the beam, improving the fixing effect of the plug-in end, and thus improving the reliability of signal transmission.

[0019] In some embodiments, taking the plane parallel to the buffer as the cross-section, the cross-sectional area S1 of the buffer and the maximum installation area S2 satisfy: S1 / S2≥80%, wherein the maximum installation area S2 is the maximum cross-sectional area of ​​the buffer that can be accommodated between the beam and the support body.

[0020] In this embodiment, by ensuring that the cross-sectional area S1 of the buffer component is greater than or equal to the maximum installation area S2, the installation area of ​​the buffer component between the beam and the support body can be maximized. This allows the gap between the beam and the support body to be filled as much as possible in all directions, thereby further reducing the swaying of the support relative to the beam and improving the stability of the plug-in end installation.

[0021] In some embodiments, the connecting part is connected to the mounting surface of the bracket body facing the beam; the buffer is disposed between the mounting surface and the beam, and buffers are provided on both sides of the connecting part in the beam extension direction.

[0022] In this embodiment, buffers are provided on both sides of the connection, so that the installation position of the buffers is as close as possible to the position where installation gaps are likely to occur, that is, the position between the beam and the connection. This allows the buffers to directly and effectively absorb the gap between the beam and the support body. In addition, multiple buffers increase the filling area of ​​the buffers, which can be used to improve the back-and-forth sway of the support relative to the beam in the beam extension direction, making the support more stable.

[0023] In some embodiments, the wall of the mounting hole is provided with at least one slot extending circumferentially along the mounting hole, each slot being used to engage with a flexible rib.

[0024] In this embodiment, by providing a groove in the wall of the mounting hole, the groove can engage with the flexible rib, allowing the mounting hole to fit more tightly with the connection part, thereby restricting the axial movement of the flexible rib in the mounting hole, further reducing the sway of the bracket relative to the beam, and improving the connection stability of the bracket.

[0025] In some embodiments, the beam has a mounting area with the thickness being a dimension parallel to the axis of the mounting hole. The thickness D1 of the mounting area and the thickness D2 of the remaining areas excluding the mounting area satisfy the condition: D1 > D2; and the mounting hole is located in the mounting area.

[0026] In some embodiments, the beam includes a first plate and a second plate disposed opposite to each other, and a support rib connecting the first plate and the second plate, with a connecting portion connected to the first plate; the mounting area and the remaining areas are areas on the first plate, and the outer side of the mounting area away from the second plate is flush with the outer side of the remaining areas away from the second plate, and the inner side of the mounting area facing the second plate protrudes beyond the inner side of the remaining areas facing the second plate.

[0027] In this embodiment, the mounting area can be locally thickened through the cavity between the first plate and the second plate, so that the outer side of the first plate can maintain a flat surface, which facilitates the installation of the bracket and the buffer.

[0028] In some embodiments, the connecting portion is adhered to the mounting hole.

[0029] This embodiment improves the firmness between the connecting part and the beam by bonding the connecting part to the mounting hole, thereby increasing the connection strength between the two and maintaining the stability of the bracket.

[0030] In some embodiments, the electrical component includes a flexible circuit board for sampling at least one battery cell, and the plug-in end includes a connector for the flexible circuit board.

[0031] In this embodiment, the flexible circuit board can be used to sample individual battery cells, thereby obtaining relevant information about the individual battery cells in a timely manner to facilitate the management of the battery device. In addition, the beam structure isolates the wiring harness from the individual battery cells, which can improve the reliability of signal transmission.

[0032] 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.

[0033] An embodiment of the third aspect of this application provides an energy storage device, which includes the battery device in the above embodiments, and the energy storage device is used to store electrical energy.

[0034] 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

[0035] 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.

[0036] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0037] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0038] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0039] Figure 4 This is a partial structural schematic diagram of a battery device provided in some embodiments of this application;

[0040] Figure 5 for Figure 4 Schematic diagram of the connection between the intermediate support and the beam;

[0041] Figure 6 for Figure 4 A partial schematic diagram of point A in the middle;

[0042] Figure 7 for Figure 5 A partial schematic diagram at point B in the middle;

[0043] Figure 8 A cross-sectional structural schematic diagram of a buffer element provided in some embodiments of this application;

[0044] Figure 9 A cross-sectional structural schematic diagram of a buffer element provided in other embodiments of this application;

[0045] Figure 10 This is a schematic diagram showing the relative positions of the buffer and the support provided in some embodiments of this application;

[0046] Figure 11 for Figure 7 A partial schematic diagram of the central beam.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1000 vehicles;

[0049] Battery unit 100, controller 200, motor 300;

[0050] Battery cell assembly 10, battery cell 11, end cap 12, housing 13, electrode assembly 14, box 20, first part 21, second part 22;

[0051] 400 bracket, 410 bracket body, 411 mounting surface, 420 connecting part, 421 nail body, 422 flexible rib, 423 abutting part;

[0052] Buffer 500, gap 510, first surface 511, second surface 512, protrusion 520;

[0053] Electrical component 600, plug-in terminal 610;

[0054] Beam 700, mounting hole 710, slot 711, mounting area 720, other areas 730, first plate 740, second plate 750, support reinforcement 760. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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).

[0061] 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.

[0062] 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.

[0063] 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.

[0064] In related technologies, the battery includes a housing and individual battery cells housed within the housing. The housing contains a flexible circuit board capable of collecting low-voltage signals such as the temperature of the individual battery cells. The flexible circuit board has connectors for insertion into wiring harness connectors. Mounting brackets are located on the sides of the housing's expansion beam, and the connectors are fixed to these brackets. Under vibration conditions, the brackets are prone to swaying relative to the expansion beam.

[0065] In related technologies, the expansion beam has openings, and the mounting bracket is installed in the openings via integrally formed cedar-shaped rivets. It can be understood that the cedar-shaped rivet has multiple flexible teeth arranged along its axial direction. When connected to the opening, some flexible teeth deform and engage in the opening, while others pass through the opening and abut against the surface of the expansion beam. Because there are gaps between the flexible teeth along the axial direction of the cedar-shaped rivet, there may be installation gaps between the flexible teeth passing through the opening and the surface of the expansion beam. That is, gaps are likely to exist between the mounting bracket and the expansion beam. Under battery vibration conditions, these gaps can cause relative swaying between the mounting bracket and the expansion beam, ultimately leading to relative movement between the flexible circuit board connector and the wiring harness connector, thus affecting the transmission of low-voltage signals.

[0066] To address at least one of the aforementioned problems, this application provides a battery device, an electrical device, and an energy storage device. The battery device includes: a housing, a support, a buffer, and at least one battery cell. At least one battery cell is inverted and installed in the housing, and the housing has a beam located on one side of the at least one battery cell. The support is located in the housing and connected to the side of the beam opposite to the at least one battery cell. The support includes a support body and a connecting portion connected to the support body. The connecting portion is connected to the beam, and the support body is used to mount the plug-in terminals of electrical components in the battery device. The buffer is connected between the support body and the beam to fill the gap between the support body and the beam in the direction facing the beam. Because the buffer can fill the gap between the buffer and the beam, it can reduce the relative sway between the support and the beam, improve the connection reliability between the plug-in terminals of electrical components and wiring harness connectors, thereby enhancing the reliability of signal transmission.

[0067] The technical solutions described in the embodiments of this application are applicable to battery devices, electrical devices using battery devices, and energy storage devices.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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 other electrical devices with battery devices or using battery devices. However, for the sake of brevity, the following embodiments will all use a vehicle as an example of an electrical device.

[0072] 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.

[0073] 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.

[0074] Please refer to Figure 2 , Figure 2 This is an exploded structural diagram of a battery provided in some embodiments of this application.

[0075] 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.

[0076] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] As an example, the housing 20 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 20 forms an enclosed space to house the battery cell assembly 10.

[0083] In some embodiments, the housing 20 may be part of the vehicle's chassis structure. For example, a portion of the housing 20 may be at least a portion of the vehicle's floor, or a portion of the housing 20 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] Figure 4 This is a partial structural schematic diagram of a battery device provided in some embodiments of this application; Figure 5 for Figure 4 Schematic diagram of the connection between the intermediate support and the beam; Figure 6 for Figure 4 A partial schematic diagram of point A in the middle; Figure 7 for Figure 5 A partial schematic diagram at point B. Please refer to the diagram. Figures 4 to 7 This application provides a battery device 100 including: a housing 20, a bracket 400, a buffer 500, and at least one battery cell 11; at least one battery cell 11 is installed upside down in the housing 20, and the housing 20 has a beam 700 located on one side of at least one battery cell 11; the bracket 400 is located in the housing 20, and the bracket 400 is connected to the side of the beam 700 away from at least one battery cell 11, the bracket 400 includes a bracket body 410 and a connecting portion 420 connected to the bracket body 410, the connecting portion 420 is connected to the beam 700, the bracket body 410 is used to install the plug-in terminal 610 of the electrical component 600 in the battery device; the buffer 500 is connected between the bracket body 410 and the beam 700, and the buffer 500 can deform under the action of external force to fill the gap 510 between the bracket body 410 and the beam 700 in the direction facing the beam 700 of the bracket body 410.

[0091] In this embodiment, the box body 20 may have a beam 700 inside, for example... Figure 4 In the housing 20, a beam 700 is provided on each side of the first part 21 along the second direction Y, and the battery cell 11 can be installed in the space between the two beams. It is understood that the beam 700 is located on the side of the housing. In some embodiments, the beam 700 can extend along the first direction X, thereby supporting and protecting the battery cell installed inside. The first direction X, the second direction Y, and the third direction Z can be mutually perpendicular directions, the third direction can be the height direction of the housing, and one of the first direction X and the second direction Y can be the length direction of the housing, and the other can be the width direction of the housing.

[0092] The beam 700 can have various structures; for example, it can be a plate-like structure or a frame structure with internal cavities. The beam 700 can be made of metal, such as aluminum or iron, to improve its structural strength.

[0093] In this embodiment, the battery cell can be inverted within the housing 20, so that the electrode terminals of the battery cell 11 are located below the housing along the third direction Z. Electrical components can be installed below the battery cell, such as... Figure 4 In the middle, the battery cells can be arranged in the space between the electrical components 600 and the two beams 700 on the left and right.

[0094] Electrical component 600 can be a component capable of signal transmission. For example, it can be a sampling component disposed at one end of each battery cell 11 along the third direction Z. The sampling component can be a circuit structure such as a flexible circuit board, which can be used to collect various signals from the battery cells, such as low-voltage signals like temperature. In addition, in order to transmit the signals acquired by electrical component 600, it can have a plug-in terminal 610, which can be plugged into a wiring harness connector or a connector base of a control component to realize signal transmission.

[0095] It is understood that in other embodiments, the electrical component 600 may also be an electrical component that transmits other signals, such as control signals, etc., and the specific configuration can be determined according to the actual situation.

[0096] In this embodiment, the plug-in end 610 of the electrical component 600 can be fixed to the beam 700, for example... Figure 4 and Figure 6 In this configuration, the plug-in terminal can be installed on the side of the beam 700 opposite to the battery cell. There are various ways to connect the plug-in terminal 610 and the bracket 400. For example, the plug-in terminal 610 can be installed on the bracket 400 using fasteners such as screws or rivets.

[0097] The bracket 400 can be housed within the enclosure. The bracket 400 includes a bracket body 410 and a connecting portion 420, which can be integrally formed or assembled. The connecting portion 420 can be connected to the beam 700, for example, using a fastening structure such as a cedar-shaped rivet or screw. The bracket body can be a plate-like, frame-like, or block-like structure, used to fix the plug-in terminal 610. In this embodiment, the connecting portion 420 can be connected to the outer side of the beam 700 away from each battery cell 11, and the bracket body 410 can be located on the side of the beam 700 away from the battery cells, thereby utilizing the side space of the enclosure 20 to install the plug-in terminal.

[0098] It is understandable that, since the battery cells are inverted in the housing 20, the electrical components need to be installed on the bottom wall of the housing 20. However, the space at the bottom of the beam is limited. By connecting the bracket to the outside of the beam away from the battery cells, the electrical components can extend to the beam and bend upward to the bracket 400, thereby using the side of the beam for fixation. In other words, the space on the outside of the beam can be used to arrange the plug terminals and wiring harnesses, thereby improving the space utilization of the housing and reducing the volume of the housing.

[0099] A buffer 500 can be connected between the support body 410 and the beam 700, and it can be a block or sheet structure. It is understood that one side of the buffer 500 can contact the support body, and the other side can contact the beam 700. The buffer 500 can fill the gap 510 between the support 400 and the beam 700 in the direction facing the support body 410 towards the beam 700, wherein the direction facing the support body 410 towards the beam 700 can be a direction perpendicular to the surfaces opposite to both, such as... Figure 6 The thickness direction of the buffer component 500.

[0100] It is understandable that in related technologies, gaps may exist between the mounting bracket and the expansion beam due to gaps between the flexible teeth of the cedar-shaped rivets or loosening of the fasteners of the mounting bracket. During battery vibration, this can cause relative swaying between the bracket and the expansion beam, leading to swaying between the connector and the wiring harness plug, which can easily affect signal transmission. In this embodiment, by setting the size of the buffer, the buffer 500 can fill the gap between the bracket and the beam caused by installation after the bracket is connected to the beam, thereby reducing the gap between the bracket and the beam and making the connection between the bracket and the beam more stable.

[0101] In some embodiments, the buffer 500 may be a separate component that is pre-installed on the bracket and installed along with the bracket during the assembly of the battery device. Alternatively, the buffer 500 may be integrally formed on the bracket.

[0102] In this embodiment, a buffer can be used to fill the gap between the bracket and the beam caused by installation, thereby improving the swaying of the bracket relative to the beam, enhancing the fixing effect of the plug-in end, and thus improving the reliability of signal transmission.

[0103] In addition, the bracket can be connected to the outside of the beam away from the battery cell, and the electrical components can extend to the beam and bend upwards, so that the side of the beam can be used for fixing. That is, the space on the outside of the beam can be used to arrange the plug terminals and wiring harnesses, improving the space utilization of the box and reducing the volume of the box. At the same time, it can facilitate the installation of the bracket and the connection of the plug terminals. In addition, the beam isolates the wiring harness from the battery cell, which can improve the reliability of signal transmission.

[0104] In addition, in some embodiments, one side of the buffer can be connected to the support body (e.g., by bonding or snapping), and the other side can be connected to the beam (e.g., by bonding or snapping). This allows the buffer to not only provide thrust to the support, but also provide tension to the support when under tension, thereby enabling the support to adapt to various complex working conditions and making the connection with the beam more stable.

[0105] Please refer to Figure 7 According to some embodiments of this application, the connecting part 420 includes a nail body 421 and a plurality of flexible ribs 422. The nail body is connected to the bracket body, and the plurality of flexible ribs 422 are spaced apart on the side surface of the nail body 421 along the extension direction of the nail body 421, and the flexible ribs 422 extend circumferentially along the nail body 421. The beam body 700 has a mounting hole 710, the nail body 421 passes through the mounting hole 710, and at least one of the plurality of flexible ribs 422 is interference-fitted in the mounting hole 710.

[0106] In this embodiment, the connecting portion 420 may include a nail body 421 and a plurality of flexible ribs 422. The nail body 421 may be a columnar structure, and the flexible ribs 422 may be sheet-like structures, which may be disposed on the side surface of the nail body 421. In addition, the flexible ribs may extend circumferentially along the nail body 421. It can be understood that the flexible ribs may extend circumferentially along the nail body in a non-closed structure. For example, the flexible ribs may include multiple segments spaced apart circumferentially along the nail body 421, with a first interval between the segments to provide deformation space, allowing the flexible ribs to pass through or engage in the mounting holes.

[0107] Multiple flexible ribs 422 can be spaced at certain intervals along the axial direction of the nail body 421, thus allowing the connection to have a cedar-like structure. For example... Figure 7 The cross-section shown illustrates the nail body and the flexible rib. It can be understood that the flexible rib 422 can be flexible, meaning it can deform under external force.

[0108] The flexible rib 422, the nail body 421, and the bracket body 410 can be integrally molded, thereby simplifying the bracket's manufacturing process. For example, they can be integrally molded from plastic. The flexible rib is relatively thin, and after processing with plastic, it can have good deformation capacity, while the thicker bracket body and nail body can have relatively good rigidity, thus facilitating installation. Alternatively, the flexible rib 422 and the rest of the bracket can be integrally molded from different materials, giving the flexible rib 422 a certain degree of flexibility while also allowing the bracket to have high rigidity.

[0109] In other embodiments, the flexible rib 422 and the nail body 421 can be integrally formed and can be assembled and connected to the support body.

[0110] The beam 700 can be provided with mounting holes 710, and the nail body 421 can pass through the mounting holes 710. During the insertion process, some flexible ribs can be deformed and pass through the mounting holes 710, while other flexible ribs can be squeezed and deformed and locked in the hole wall of the mounting holes 710, thereby realizing the connection between the bracket and the beam.

[0111] It is understandable that, due to the certain intervals between the flexible ribs, there may be an installation gap between the flexible rib passing through the mounting hole (the one closest to the beam) and the beam. This results in a gap 510 between the support body 410 and the beam 700. When vibration occurs, this installation gap causes the support to tend to sway relative to the beam. However, since a buffer is provided between the support and the beam, the buffer can absorb this gap 510 during installation, allowing the flexible rib passing through the mounting hole (the one closest to the beam) to rest against the beam, thereby improving the stability of the support. Furthermore, since the buffer can provide thrust and tension, the support can adapt to various complex working conditions, and the connection with the beam is more stable.

[0112] In this embodiment, the bracket and beam can be installed using nails and flexible ribs, resulting in high installation efficiency. Furthermore, the bracket can adapt to various beams with different apertures, demonstrating good versatility. Additionally, by incorporating a buffer, which provides both thrust and tension, the bracket can adapt to various complex working conditions, leading to a more stable connection with the beam.

[0113] According to some embodiments of this application, such as Figure 6 and Figure 7 As shown, in the direction from the end of the flexible rib 422 connected to the nail body 421 to the other end of the flexible rib 422 away from the nail body 421, the distance between the flexible rib 422 and the support body 410 gradually decreases.

[0114] The end of the flexible rib connected to the nail body is designated as the first end of the flexible rib, and the end of the flexible rib away from the nail body is designated as the second end of the flexible rib 422. The direction from the end of the flexible rib connected to the nail body towards the other end of the flexible rib away from the nail body refers to the direction from the first end of the flexible rib towards the second end of the flexible rib. Furthermore, the distance between the flexible rib 422 and the support body gradually decreases in this direction. That is, the flexible rib can gradually expand along the direction close to the support body, thus facilitating the second end of the flexible rib, which protrudes from the mounting hole 710, to rest against the beam 700, thereby improving the reliability of the connection between the connection part and the beam.

[0115] In some embodiments, the connecting portion further includes an abutment portion 423, which may be disposed at the end of the support body facing the beam 700. The abutment portion 423 may also be a flexible structure that gradually expands along the direction of the support body towards the beam. It is understood that the abutment portion and the flexible rib may be arranged opposite to each other, that is, their gradually expanding openings may be arranged opposite to each other, so that the beam 700 can be abutted between the abutment portion and the flexible rib 422, further improving the connection reliability between the beam and the support.

[0116] In this embodiment, by setting the flexible ribs as a gradually expanding structure facing the support body, the flexible ribs can abut against the beam, thereby improving the connection reliability between the connection part and the beam.

[0117] According to some embodiments of this application, the buffer 500 can deform under the action of external force.

[0118] In this embodiment, the buffer 500 can be a structure with a certain degree of deformability, such as rubber, foam, or plastic with a certain degree of deformability. It is understood that these materials can all have a certain degree of deformability, although plastic has a slightly weaker deformability.

[0119] In this embodiment, since the buffer 500 can deform under external force, when the bracket is connected to the beam, the buffer 500 can be squeezed and provide a reaction force to the bracket and the beam to absorb the gap between the bracket and the beam caused by installation. It can also adapt to gaps of different sizes through deformation, making the connection between the bracket and the beam more stable. This can improve the situation of the bracket swaying relative to the beam, improve the fixing effect of the plug end, and thus improve the reliability of signal transmission.

[0120] Figure 8 This is a cross-sectional structural schematic diagram of a buffer element provided in some embodiments of this application. Please refer to... Figures 4 to 8 According to some embodiments of this application, the buffer 500 has a first surface 511 and a second surface 512 disposed opposite to each other, the first surface 511 being bonded to the beam 700 and the second surface 512 being bonded to the support body 410.

[0121] In this embodiment, the buffer 500 can be a separate component, which can be a sheet-like or block-like structure. Figure 8 The cross-sectional shape of the buffer is shown in the figure, and the thickness direction of the buffer can be... Figure 8 The left and right directions in the middle.

[0122] The buffer 500 may have two opposing surfaces along its thickness direction, namely a first surface 511 and a second surface 512. The first surface 511 can be bonded to the beam 700 by adhesive bonding, and the second surface 512 can be bonded to the support body 410 by adhesive bonding.

[0123] It is understandable that the adhesive connection allows the buffer 500 to not only compress and deform under external force, but also stretch and deform under external force.

[0124] Under vibration conditions, the installation gap between the support body 410 and the beam 700 may tend to increase or decrease. When the gap tends to decrease, the buffer 500 can provide thrust to keep the support in force balance, thus keeping the support stable relative to the beam. Conversely, when the gap tends to increase, the buffer 500 can provide tensile force to the beam and support through adhesion, keeping the support in force balance and keeping the support stable relative to the beam.

[0125] In this embodiment, by bonding the buffer between the beam and the support body, the buffer can absorb the gap between the beam and the support body, so that the support maintains a force balance, thereby improving the stability of the support, thus improving the swaying of the support relative to the beam, improving the fixing effect of the plug end, and thus improving the reliability of signal transmission.

[0126] According to some embodiments of this application, the buffer 500 includes foam with adhesive layers on both sides.

[0127] In this embodiment, the buffer 500 can be foam, which has good deformation ability and can absorb the gap between the beam and the support caused by installation.

[0128] The adhesive layer can be a colloid without a substrate, or it can be a double-sided adhesive structure with a substrate. The adhesive layer can be used to bond to the support body or the beam.

[0129] In this embodiment, by setting adhesive layers on both sides of the foam, the bonding connection between the buffer and the beam and the support body can be achieved, which can absorb the installation gap, and the structure is simple and the cost is lower.

[0130] Figure 9This is a cross-sectional structural schematic diagram of a buffer element provided for other embodiments of this application. Please refer to... Figures 4 to 7 and Figure 9 According to some embodiments of this application, the buffer 500 includes a protrusion 520 integrally formed on the side of the support body 410 facing the beam 700, and the protrusion 520 is bonded to the beam 700.

[0131] Understandable. Figure 8 The structure of the protrusion 520 and the part of the support body 410 connected thereto is shown, but the entire support is not shown in its entirety.

[0132] In this embodiment, the protrusion 520 can be integrally formed into the bracket 400. It can be understood that the bracket 400 can be manufactured from plastic material using common plastic processing methods such as injection molding. By selecting a suitable material, the protrusion supported by the plastic material can also have a certain degree of deformability.

[0133] In some embodiments, the protrusion 520 can be made of the same plastic material as the bracket body 410. Due to the thinness of the protrusion 520, it can have relatively good deformation capacity. In other embodiments, the protrusion 520 can also be made of a different material than the bracket body 410, thereby achieving one-piece molding of the bracket through methods such as two-color injection molding. In addition, by using different materials, the bracket body 410 can have a higher hardness than the protrusion 520, which can give the protrusion 520 a relatively large deformation capacity, and also give the bracket body 410 a certain degree of hardness, improving the reliability of the fixing of the plug end 620. Furthermore, the protrusion 520 can be bonded to the beam 700. The bonded connection allows the buffer 500 to not only compress and deform under external force, but also stretch and deform under external force.

[0134] Under vibration conditions, the installation gap between the support body 410 and the beam 700 may tend to increase or decrease. When the gap tends to decrease, the buffer 500 can receive the thrust from the beam, keeping the support in force balance and thus maintaining stability relative to the beam. Conversely, when the gap tends to increase, the buffer 500 can receive the tension from the beam, keeping the support in force balance and maintaining stability relative to the beam.

[0135] In this embodiment, by integrally molding the protrusion with the bracket, the assembly steps can be simplified and the assembly efficiency improved. By bonding the buffer to the beam, the buffer can absorb the gap between the beam and the bracket body through the thrust or tension between the buffer and the beam, so that the bracket maintains a force balance, thereby improving the stability of the bracket, thus improving the swaying of the bracket relative to the beam, improving the fixing effect of the plug-in end, and thus improving the reliability of signal transmission.

[0136] Figure 10 This is a schematic diagram showing the relative positions of the buffer and the support in some embodiments of this application; please refer to... Figure 7 and Figure 10 According to some embodiments of this application, with a plane parallel to the buffer 500 as the cross-section, the cross-sectional area S1 of the buffer 500 and the maximum installation area S2 satisfy the following: S1 / S2≥80%, wherein the maximum installation area S2 is the maximum cross-sectional area of ​​the buffer that can be accommodated between the beam 700 and the support body 410.

[0137] In this embodiment, Figure 10 The plane shown is parallel to the buffer element 500, that is, perpendicular to the thickness direction of the buffer element. This can be understood as... Figure 10 The figure shows the mounting surface 411 of the support body 410 opposite to the beam, used for mounting the buffer, which is also the largest square area filled with grid. The two circular areas in the figure show the projection of the connection part 420 on the mounting surface 411. It can be understood that the connection part 420 in the figure includes parts of the left and right circular areas. The three smaller square areas in the figure are the mounting areas of the buffer 500, that is, the sum of the areas of the three square areas is the cross-sectional area S1 of the buffer 500.

[0138] The maximum installation area S2 is the maximum cross-sectional area of ​​the buffer that can be accommodated between the beam 700 and the bracket body 410. Since a buffer cannot be installed at the connection between the connecting part 420 and the bracket body 410, the maximum installation area is the area of ​​the mounting surface 411 minus the area of ​​the connecting part 420, that is, the maximum outline area of ​​the mounting surface 411 minus the area of ​​the circular area. In the figure, this is represented by the area of ​​the grid-filled area as the maximum installation area S2. It can be understood that the maximum installation area can include the installation area of ​​the buffer 500.

[0139] It is understandable that the number of buffers 500 can be one or more.

[0140] The cross-sectional area S1 of the buffer 500 and the maximum installation area S2 satisfy the following condition: S1 / S2≥80%, for example, it can be 80%, 85%, 90%, 95% or 100%, etc.

[0141] In other embodiments, S1 / S2 ≥ 82%, S1 / S2 ≥ 90%, or S1 / S2 ≥ 95%, etc.

[0142] In this embodiment, by ensuring that the cross-sectional area S1 of the buffer 500 is greater than or equal to the maximum installation area S2, the installation area of ​​the buffer between the beam and the support body can be maximized. This allows the gap between the beam and the support body to be filled as much as possible in all directions, thereby further reducing the swaying of the support relative to the beam and improving the stability of the plug-in end installation.

[0143] According to some embodiments of this application, such as Figure 7 and Figure 10 The connecting part 420 is connected to the mounting surface 411 of the bracket body 410 facing the beam 700; the buffer 500 is disposed between the mounting surface 411 and the beam 700, and buffers 500 are provided on both sides of the connecting part 420 in the beam extension direction.

[0144] In this embodiment, the mounting surface 411 can be the surface of the bracket body 410 opposite to the beam, used for mounting the buffer component. The connecting part 420 can be provided on the mounting surface 411.

[0145] The extension direction of beam 700 can be the first direction X, that is... Figure 10 In the left and right directions. In this embodiment, multiple buffer members 500 can be provided. For example, buffer members 500 can be provided on both sides of the connecting part 420 along the first direction.

[0146] In some embodiments, there may be multiple connecting portions 420, and each connecting portion may be provided with buffers 500 on both sides along the first direction X.

[0147] Figure 10 The diagram shows two connecting parts 420, and each connecting part 420 can be provided with a buffer 500 on both sides. In addition, the size of each buffer can be the same or different, and the specific design can be selected according to the relative position between the connecting part and the mounting surface.

[0148] In this embodiment, buffers are provided on both sides of the connection, so that the installation position of the buffers is as close as possible to the position where installation gaps are likely to occur, that is, the position between the beam and the connection. This allows the buffers to directly and effectively absorb the gap between the beam and the support body. In addition, multiple buffers increase the filling area of ​​the buffers, which can be used to improve the back-and-forth sway of the support relative to the beam in the beam extension direction, making the support more stable.

[0149] Figure 11 for Figure 7 A partial schematic diagram of the central beam. According to some embodiments of this application, such as... Figure 11The mounting hole 710 has at least one slot 711 extending circumferentially along the mounting hole 710, each slot 711 being used to engage with a flexible rib 422.

[0150] In this embodiment, one or more slots 711 can be provided on the wall of the mounting hole 710, and the slots can extend circumferentially. Furthermore, the shape of the slots can be set according to the deformed shape of the flexible rib 422, so that the flexible rib 422 abutting against the hole wall can be engaged in the slots. The slots can be formed on the hole wall using common processing methods, such as machining threads.

[0151] In addition, the number of slots can be set according to the approximate number of flexible ribs 422 that can abut against the hole wall, so that each slot can engage one flexible rib 422.

[0152] It is understandable that, due to the flexibility of the flexible rib, after it is engaged with the slot, it can still have a small amount of deformation along the axis of the mounting hole, so that the buffer can still absorb the installation gap between the connection and the beam.

[0153] In this embodiment, by providing a groove in the wall of the mounting hole, the groove can engage with the flexible rib, allowing the mounting hole to fit more tightly with the connection part, thereby restricting the axial movement of the flexible rib in the mounting hole, further reducing the sway of the bracket relative to the beam, and improving the connection stability of the bracket.

[0154] According to some embodiments of this application, the beam body has a mounting area 720 with the thickness being the dimension parallel to the axis of the mounting hole 710. The thickness D1 of the mounting area 720 and the thickness D2 of the remaining areas excluding the mounting area 720 satisfy the following condition: D1 > D2; and the mounting hole 710 is provided in the mounting area 720.

[0155] In this embodiment, the beam 700 can be locally thickened at the location where the mounting holes 710 are provided. Taking a planar plate structure as an example, for instance... Figure 11 In the diagram, the area within the dashed line can be designated as the mounting area 720, where mounting holes can be located. The remaining areas of the beam body outside this mounting area that can accommodate holes can be designated as the other areas 730. The mounting area 720 can have various shapes; for example, it can be... Figure 11 The shown area is square, but the mounting area 720 can also be circular or other shapes. The area of ​​the mounting area 720 can also be set according to the size of the mounting hole so that the mounting area can cover the mounting hole.

[0156] It is understood that, taking the dimension parallel to the axis of the mounting hole 710 as the thickness, the thickness D1 of the mounting area 720 can be greater than the thickness D2 of the remaining areas 730. Since the mounting area 720 is thicker, it can protrude beyond the remaining areas 730. It is understood that one end of the mounting area along the axial direction of the mounting hole protrudes beyond the remaining areas, or both ends of the mounting area along the axial direction of the mounting hole protrude beyond the remaining areas.

[0157] In addition, in some embodiments, the edge of the mounting area can be smoothly transitioned to the edge of the rest of the area, thereby reducing stress concentration and improving the structural strength of the beam.

[0158] In this embodiment, by locally thickening the installation area, the wall area of ​​the installation hole can be increased, thereby allowing it to engage with more flexible ribs or to have more slots, further improving the fixing effect between the bracket body and the beam.

[0159] According to some embodiments of this application, the beam 700 includes a first plate 740 and a second plate 750 disposed opposite to each other, and a support rib 760 connecting the first plate 740 and the second plate 750. The connecting portion 420 is connected to the first plate 740. The mounting area 720 and the remaining area 730 are areas on the first plate 740, and the outer side of the mounting area 720 facing away from the second plate 750 is flush with the outer side of the remaining area 730 facing away from the second plate 750. The inner side of the mounting area 720 facing the second plate 750 protrudes beyond the inner side of the remaining area 730 facing the second plate 750.

[0160] In this embodiment, the beam 700 can be a structure with cavities. For example, it can include a first plate 740 and a second plate 750 disposed opposite to each other, and the two can be connected by one or more supporting ribs 760. The first plate and the second plate can be plate-like structures, and the supporting ribs 760 can be inclined relative to the first plate. The supporting ribs 760 can be connected between the first plate and the second plate, thereby dividing the space between the first plate 740 and the second plate 750 into multiple cavities, thereby improving the strength of the beam 700.

[0161] In this embodiment, the first plate 740 can be located on the outside of the second plate 750, away from the battery cell 11. The mounting area 720 and the remaining areas 730 can be the areas on the first plate 740 that are not connected to the support ribs 760.

[0162] The side of the first plate 740 facing away from the second plate 750 is designated as the outer side of the first plate 740, and the side of the first plate 740 facing the second plate 750 is designated as the inner side of the first plate. The outer side of the mounting area 720 is flush with the outer side of the remaining areas 730, while the inner side of the mounting area 720 protrudes beyond the inner side of the remaining areas 730. This allows for local thickening of the mounting area using the cavity between the first and second plates, while also ensuring that the outer side of the first plate remains flush, facilitating the installation of the bracket and buffer components.

[0163] In this embodiment, the mounting area can be locally thickened through the cavity between the first plate and the second plate, so that the outer side of the first plate can maintain a flat surface, which facilitates the installation of the bracket and the buffer.

[0164] According to some embodiments of this application, the connecting portion 420 is bonded to the mounting hole 710.

[0165] In this embodiment, when installing the bracket, an adhesive can be applied to the connecting part 420 first, for example, the adhesive can be applied to the nail body and the flexible rib. After the connecting part 420 is installed with the beam body 700, the adhesive can be allowed to solidify, so that the flexible rib can be bonded to the mounting hole 710 at the same time as it is engaged, thereby further improving the reliability of the connection between the beam body and the connecting part.

[0166] There are many types of adhesives available, and the specific type to be selected depends on the material of the connection and the beam.

[0167] This embodiment improves the firmness between the connecting part and the beam by bonding the connecting part to the mounting hole, thereby increasing the connection strength between the two and maintaining the stability of the bracket.

[0168] According to some embodiments of this application, such as Figure 4 and Figure 7 In the process, electrical component 600 includes a flexible circuit board for sampling at least one battery cell 11, and plug-in terminal 610 includes a connector for the flexible circuit board.

[0169] Electrical component 600 may include a flexible circuit board for sampling individual battery cells, such as a flexible circuit board that can sample low-voltage signals like battery cell temperature. Electrical component 600 can connect to the battery cells to acquire the required signals. It is understood that since the battery cells are placed upside down and the space under the beams is limited, the plug-in terminals of electrical component 600 can be fixed to the outside of one of the beams 700 via bracket 400, thereby minimizing the volume of the enclosure.

[0170] In this embodiment, the flexible circuit board can be used to sample individual battery cells, thereby obtaining relevant information about the individual battery cells in a timely manner to facilitate the management of the battery device. In addition, the beam structure isolates the wiring harness from the individual battery cells, which can improve the reliability of signal transmission.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] This embodiment provides a battery device, such as... Figures 4 to 8 , Figure 10 and Figure 11The battery device 100 includes: a housing 20, a bracket 400, a buffer 500, and at least one battery cell 11; the at least one battery cell 11 is installed upside down in the housing 20, and the housing 20 has a beam 700 located on one side of the at least one battery cell 11; the bracket 400 is located in the housing 20, and the bracket 400 is connected to the side of the beam 700 away from the at least one battery cell 11; the bracket 400 includes a bracket body 410 and a connecting portion 420 connected to the bracket body 410, the connecting portion 420 is connected to the beam 700, and the bracket body 410 is used to install the plug-in terminal 610 of the electrical component 600 in the battery device; the buffer 500 is connected between the bracket body 410 and the beam 700, and the buffer 500 can deform under the action of an external force to fill the gap between the bracket body 410 and the beam 700 in the direction facing the beam 700. The electrical component 600 may include an FPC (Flexible Printed Circuit), and the plug-in terminal 610 may be an FPC connector, which can be used to plug into a wire harness connector for signal transmission.

[0178] In this embodiment, since the buffer 500 can deform under external force, when the bracket is connected to the beam, the buffer 500 can be squeezed and provide a reaction force to the bracket and the beam to absorb the gap between the bracket and the beam caused by installation. It can also adapt to different sizes of installation gaps by deformation, making the connection between the bracket and the beam more stable. This can improve the situation of the bracket swaying relative to the beam, improve the fixing effect of the plug end, and thus improve the reliability of signal transmission.

[0179] In addition, the bracket can be connected to the outside of the beam away from the battery cell, and the electrical components can extend to the beam and bend upwards, so that the side of the beam can be used for fixing. That is, the space on the outside of the beam can be used to arrange the plug terminals and wiring harnesses, improving the space utilization of the box and reducing the volume of the box. At the same time, it can facilitate the installation of the bracket and the connection of the plug terminals. In addition, the beam isolates the wiring harness from the battery cell, which can improve the reliability of signal transmission.

[0180] The buffer 500 can be foam that provides cushioning, with one side of it being bonded to the support body 410 and the other side being bonded to the beam 700.

[0181] The connecting part 420 may include a nail body 421 and a plurality of flexible ribs 422. The nail body 421 is connected to the bracket body 410. The plurality of flexible ribs 422 are spaced apart on the side surface of the nail body 421 along the extending direction of the nail body 421, and the flexible ribs 422 extend circumferentially along the nail body 421. The beam body 700 has a mounting hole 710, through which the nail body 421 passes, and at least one of the plurality of flexible ribs 422 is interference-fitted into the mounting hole 710. It can be understood that the foam can fill the gap between the bracket 400 and the beam body 700, thereby absorbing the installation gap generated by the locking of the flexible ribs 422 and the beam body 700 using the compression characteristics of the foam, reducing the up-and-down swing of the connecting part relative to the beam body. At the same time, the buffer 500 can be bonded to the beam body 700 with adhesive, thereby using the adhesive force to keep the bracket body and the beam body relatively fixed, thereby achieving the effect of strengthening the fixation of the FPC joint and improving the phenomenon that signal transmission is affected by bracket shaking.

[0182] In some embodiments, the mounting area where the mounting holes are located on the beam 700 can be locally thickened. In addition, threads can be machine-threaded into the wall of the mounting holes to create a groove 711. The groove 711 can be tightly engaged with the flexible rib of the connecting part 420, thereby further enhancing the fixing effect of the FPC joint.

[0183] In some embodiments, the connecting portion 420 is bonded to the mounting hole 710. When installing the bracket, adhesive can be applied to the connecting portion 420 first, for example, to the nail body and the flexible rib. After the connecting portion 420 is installed with the beam body 700, the adhesive can be allowed to solidify, allowing the flexible rib to be bonded to the mounting hole 710. This further improves the reliability of the connection between the beam body and the connecting portion, and further enhances the fixing effect on the FPC joint.

[0184] 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; The housing, wherein at least one battery cell is inverted and installed in the housing, and the housing has a beam located on one side of the at least one battery cell; A bracket, located in the housing and connected to the beam on the side away from the at least one battery cell, the bracket includes a bracket body and a connecting part connected to the bracket body, the connecting part being connected to the beam body, and the bracket body being used to install the plug terminals of electrical components in the battery device; A buffer element is connected between the support body and the beam to fill the gap between the support body and the beam in the direction facing the beam.

2. The battery device according to claim 1, characterized in that, The connecting part includes a nail body and a plurality of flexible ribs. The nail body is connected to the bracket body. The plurality of flexible ribs are spaced apart on the side surface of the nail body along the extension direction of the nail body, and the flexible ribs extend circumferentially along the nail body. The beam has mounting holes, the nail passes through the mounting holes, and at least one of the plurality of flexible ribs is interference-fitted into the mounting holes.

3. The battery device according to claim 2, characterized in that, In the direction from the end where the flexible rib is connected to the nail body to the other end where the flexible rib is away from the nail body, the distance between the flexible rib and the support body gradually decreases.

4. The battery device according to any one of claims 1-3, characterized in that, The buffer element can deform under the action of external force.

5. The battery device according to any one of claims 1-3, characterized in that, The buffer has a first surface and a second surface that are disposed opposite to each other. The first surface is bonded to the beam and the second surface is bonded to the support body.

6. The battery device according to claim 5, characterized in that, The buffer component includes foam with adhesive layers on both sides.

7. The battery device according to any one of claims 1-3, characterized in that, The buffer includes a protrusion integrally formed on the side of the support body facing the beam, and the protrusion is bonded to the beam.

8. The battery device according to any one of claims 1-3, characterized in that, Taking a plane parallel to the buffer as its cross-section, the cross-sectional area S1 of the buffer and the maximum installation area S2 satisfy the following relationship: S1 / S2≥80%. Wherein, the maximum installation area S2 is the maximum cross-sectional area of ​​the buffer component that can be accommodated between the beam and the support body.

9. The battery device according to any one of claims 1-3, characterized in that, The connecting part is connected to the mounting surface of the bracket body facing the beam; the buffer is disposed between the mounting surface and the beam, and the buffer is provided on both sides of the connecting part in the beam extension direction.

10. The battery device according to claim 2 or 3, characterized in that, The mounting hole has at least one slot extending circumferentially along the mounting hole, each slot being used to engage with one of the flexible ribs.

11. The battery device according to claim 2 or 3, characterized in that, With the dimension parallel to the axis of the mounting hole as the thickness, the beam has a mounting area, and the thickness D1 of the mounting area and the thickness D2 of the remaining areas excluding the mounting area satisfy the following: D1 > D2; The mounting hole is located in the mounting area.

12. The battery device according to claim 11, characterized in that, The beam includes a first plate and a second plate disposed opposite to each other, and a supporting rib connecting the first plate and the second plate, wherein the connecting part is connected to the first plate; The mounting area and the remaining areas are areas on the first plate, and the outer side of the mounting area away from the second plate is flush with the outer side of the remaining areas away from the second plate. The inner side of the mounting area facing the second plate protrudes beyond the inner side of the remaining areas facing the second plate.

13. The battery device according to claim 2 or 3, characterized in that, The connecting part is bonded to the mounting hole.

14. The battery device according to any one of claims 1-3, characterized in that, The electrical component includes a flexible circuit board for sampling the at least one battery cell, and the plug-in terminal includes a connector for the flexible circuit board.

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

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

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