Battery device, electric equipment and energy storage device

Abstract

The utility model provides a battery device, electric equipment and an energy storage device, and belongs to the field of batteries. The battery device comprises a box body, a battery monomer assembly, a battery management unit, an acquisition assembly, a bracket and a second connector, and a beam is arranged in the box body; the battery monomer assembly and the battery management unit are arranged in the box body and are respectively positioned on two sides of the beam; the acquisition assembly comprises a circuit board and a first connector, and the circuit board is electrically connected with the battery monomer assembly and the first connector; the support is fixedly arranged on the side face of the beam and fixedly provided with a connecting piece. The second connector is located on one side of the beam and connected with the first connector in an inserted mode, the second connector is used for being electrically connected with the battery management unit, a matching piece is arranged on the side, facing the support, of the second connector, and the matching piece is fixedly connected with the connecting piece. According to the scheme, the second connector is effectively fixed through the support, and the second connector and the first connector are connected in an inserted mode to form the connector, so that the connector can be effectively fixed, and the stability of the connector is improved.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are crucial for sustainable social development. Batteries, with their ability to store or release energy as needed, are widely used in various electrical devices and energy storage systems, and are an important component in promoting energy transition and sustainable development. For the new energy industry, battery technology is a critical factor in its development.

[0003] The battery's signals are transmitted to the battery management unit (BMU) via the circuit board and connectors. The BMU receives and processes the signals. Understandably, improving the stability of the connectors is a crucial consideration. 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, electrical appliance, and energy storage device to effectively improve the stability of the connector.

[0005] An embodiment of the first aspect of this application provides a battery device, including: a housing, a battery cell assembly, a battery management unit, a data acquisition component, a bracket, and a second connector. A beam is provided inside the housing. The battery cell assembly and the battery management unit are both located inside the housing and on opposite sides of the beam. The data acquisition component includes a circuit board and a first connector, the circuit board being electrically connected to both the battery cell assembly and the first connector. The bracket is fixedly disposed on the side of the beam, and a connector is fixedly disposed on the bracket. The second connector is located on the side of the beam facing the battery management unit and is plugged into and connected to the first connector. The second connector is used for electrical connection with the battery management unit. A mating part is provided on the side of the second connector facing the bracket, and the mating part is fixedly connected to the connector.

[0006] In the technical solution of this application embodiment, a bracket fixed to the beam is designed, and a connector fixed to the bracket is also designed. A mating part is provided on the surface of the second connector facing the bracket, and the mating part is fixedly connected to the connector. Thus, by utilizing the connection relationship between the mating part and the connector, the second connector is effectively fixed by the bracket. Since the second connector and the first connector are plugged into each other to form a connector, the connector composed of the first connector and the second connector can be effectively fixed, thereby reducing connector wobbling and improving connector stability.

[0007] In some embodiments, the mating member is configured to include a groove; the connecting member includes a sliding portion that slidably engages with the groove. This embodiment allows the sliding portion of the mating member and the connecting member to slidably engage, thus simplifying assembly and improving assembly efficiency.

[0008] In some embodiments, the mating member further includes an elastic protrusion, and the connector further includes a snap-fit ​​portion connected to the sliding portion. The elastic protrusion adapts to the snap-fit ​​portion by deformation to restrict the sliding portion from sliding along the groove.

[0009] In some embodiments, the elastic protrusion is a wedge-shaped block having a first guide slope facing the inlet of the groove; from one end near the inlet to one end away from the inlet, the first guide slope is inclined in a direction away from the second connector; the surface of the wedge-shaped block facing away from the inlet abuts against the snap-fit ​​portion to restrict the sliding portion from sliding along the groove toward the inlet; the groove includes a stop wall opposite to the inlet, the stop wall abutting against the sliding portion, and the stop wall is used to prevent the sliding portion from continuing to slide in the direction of sliding into the groove.

[0010] Using this technical solution, the sliding part slides, causing the locking part to gradually squeeze the elastic protrusion. This reduces wear and scratches caused by instantaneous impact, making the process of the sliding part locking into the groove smoother and more seamless.

[0011] In some embodiments, the snap-fit ​​portion is configured to have a second guide slope; along the sliding direction of the sliding portion, the second guide slope is inclined in a direction away from the second connector, and the second guide slope faces the stop wall and is adapted to the first guide slope.

[0012] In this embodiment, the snap-fit ​​portion slides in contact with the elastic protrusion, which helps to further improve the smoothness and fluidity of the process of the sliding portion snapping into the groove.

[0013] In some embodiments, the slide groove has two stop walls, and the slide groove also includes two bottom walls and two side walls. The two bottom walls are located between the two side walls. The two stop walls and the two bottom walls are spaced apart along a first direction. Each stop wall is connected to a bottom wall and a side wall by a bend. The first direction is perpendicular to the sliding direction of the sliding part and the thickness direction of the bottom wall.

[0014] In some embodiments, the sliding part includes a connecting part and two plate parts. The two plate parts are respectively located on both sides of the connecting part along the first direction and are connected to the connecting part by a bend. The two plate parts correspond one-to-one with the two bottom walls of the groove. Each plate part rests on the corresponding bottom wall of the groove. The connecting part is located between the two bottom walls of the groove. When the snap-fit ​​part abuts against the surface of the wedge block away from the inlet, the two plate parts correspond one-to-one with the two stop walls and abut against each other.

[0015] In some embodiments, the bottom wall of the groove facing the second connector has a guide protrusion, and the plate facing away from the second connector has a groove. The extension direction of the groove is parallel to the extension direction of the slide groove, and the guide protrusion slides in conjunction with the groove.

[0016] In this technical solution, the guide protrusion and the groove are matched to play a guiding role, guiding the sliding part to slide reliably along the extension direction of the groove.

[0017] In some embodiments, the bracket is provided with a locking hole; the connector includes a resilient retaining portion configured to have a locked state and an unlocked state; in the locked state, the resilient retaining portion passes through the locking hole and is engaged with the bracket; in the unlocked state, the resilient retaining portion can pass through the locking hole and can disengage from the bracket.

[0018] With this technical solution, the connector and the bracket can be detachably connected, and the connection method is simple, which makes it easy to maintain or replace the connector.

[0019] In some embodiments, the elastic retaining portion includes a main body and a plurality of elastic retaining arms spaced circumferentially along the main body. Each elastic retaining arm has a first end and a second end. The first end is closer to the second connector than the second end, and the second end is connected to the main body. From the second end to the first end, the elastic retaining arm gradually moves away from the surface of the main body.

[0020] In some embodiments, the connector further includes a stop portion connected to the resilient retaining portion, which, in the locked state, abuts against the surface of the bracket facing the second connector.

[0021] With this technical solution, in the locked state, the stop part and the elastic retaining part abut against the two sides of the support plate respectively, so that the connector is held in place by the bracket, thus making the connector stable in the bracket.

[0022] In some embodiments, one of the bracket and the beam is provided with a positioning post and the other is provided with a positioning hole, and the positioning post and the positioning hole are inserted into each other.

[0023] Using this technical solution, the matching relationship between the positioning column and the positioning hole can play a role in positioning and preventing mistakes. This is conducive to quickly finding the installation position of the bracket, thereby improving the installation efficiency of the bracket being correctly installed on the beam.

[0024] 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.

[0025] An embodiment of the third aspect of this application provides an energy storage device that includes the battery device described above, the battery device being capable of storing and providing electrical energy.

[0026] 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

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0029] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0030] Figure 3 This is a partial schematic diagram of a battery device according to some embodiments of this application;

[0031] Figure 4 This is a schematic diagram of the connection between the connector and the connecting member in some embodiments of this application;

[0032] Figure 5 for Figure 4 An exploded view of the connector and connecting parts shown;

[0033] Figure 6 for Figure 4 A partial cross-sectional schematic diagram of the connector and connecting parts shown;

[0034] Figure 7 for Figure 4 A schematic diagram of the structure of the second connector shown;

[0035] Figure 8 for Figure 4 A schematic diagram of the connector shown;

[0036] Figure 9 for Figure 4 A cross-sectional schematic diagram of the connector and connecting parts shown;

[0037] Figure 10 for Figure 3 The diagram shows the structure of the support.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1000 vehicles;

[0040] Battery unit 100, controller 200, motor 300;

[0041] Battery cell module 10, battery cell 11;

[0042] Box 20, first box 21, second box 22, beam 23, bracket 24, connecting plate 241, support plate 242, lock hole 2421, positioning post 243, connecting hole 244, reinforcing plate 245;

[0043] Connector 30, first connector 31, second connector 32, mating part 321, slide groove 3211, groove bottom wall 3211a, groove side wall 3211b, stop wall 3211c, inlet 3211d, elastic protrusion 3212, first guide slope 3213, guide protrusion 3214.

[0044] Connector 50, sliding part 51, groove 511, snap-fit ​​part 512, second guide slope 5121, plate part 513, connecting part 514, stop part 52, elastic holding part 53, main body part 531, elastic locking arm 532, step part 5321, first step surface 5322, second step surface 5323;

[0045] Fastener 60. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0051] 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).

[0052] 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.

[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation", "connection", "linking", 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 connection of two components or the interaction between two components.

[0054] In this application, the term "parallel" includes not only absolute parallelism but also approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only absolute perpendicularity but also approximate perpendicularity as commonly understood in engineering. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0055] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" may mean that other components not listed may also be included, or that only the listed components may be included. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0056] 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.

[0057] The connector includes a first connector and a second connector. One of the first and second connectors is electrically connected to the circuit board, and the other is electrically connected to the battery management unit. The first and second connectors are plugged together, allowing the battery's signals to be transmitted to the battery management unit through the circuit board and the connector. The battery management unit receives and processes the signals. It can be understood that one of the first and second connectors is a male plug, and the other is a female socket.

[0058] Taking the application of batteries in electric vehicles as an example, when an electric vehicle is driving on a bumpy road, the battery will vibrate. The connector will be affected by the vibration and shake, which will cause the first connector and the second connector to loosen, or cause the circuit board to be pulled and cracked, thus causing the signal to be unable to be transmitted normally and affecting the battery function.

[0059] Based on the above considerations, a battery device was designed. By providing a mating part on the side of the second connector facing the bracket, and fixing the bracket to the beam, the mating part is fixedly connected to the connector fixed to the bracket. This can effectively fix the connector composed of the first connector and the second connector, thereby reducing the shaking of the connector and improving the stability of the connector.

[0060] The battery devices described in this application can be used, but are not limited to, in electrical equipment or energy storage devices such as vehicles, ships, or aircraft. A power system incorporating the battery devices described in this application can be used to construct such electrical equipment or energy storage devices.

[0061] The energy storage device utilizing a battery as a power system in this application embodiment can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage device can store electrical energy as needed and output it at appropriate times. For example, the energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage device provided in this application embodiment can be used in any power system that requires energy storage.

[0062] In some embodiments, the energy storage device is an energy storage container, an energy storage cabinet, an energy storage power station, an energy storage battery pack, or a portable energy storage system.

[0063] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet. Each battery cluster may include multiple battery units connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, these clusters are connected in parallel to increase the capacity of the energy storage device.

[0064] In this application, the electrical devices using battery devices as power sources can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. For the sake of brevity, the following embodiments all use electric vehicles as examples.

[0065] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 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 provided 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.

[0066] 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.

[0067] Figure 2 A schematic diagram of the structure of a battery device 100 according to an embodiment of this application is shown. Figure 2 As shown, the battery device 100 provided 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.

[0068] In some embodiments, the battery cell assembly 10 is typically formed by arranging a plurality of battery cells 11.

[0069] 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.

[0070] The battery cell 11 mentioned in the embodiments of this application can be a rechargeable battery. A rechargeable battery refers to a battery cell 11 that can be recharged after discharge to activate the active materials and continue to be used. 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. As an example, the battery cell 11 can be a cylindrical battery cell, a prismatic battery cell, or a battery cell 11 of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells, etc., and this application has no particular limitations.

[0071] In some embodiments, the battery device 100 may include a battery management unit, which is capable of receiving state information of individual battery cells (e.g., temperature information, voltage information), predicting the state of charge and health of individual battery cells, and controlling the high-voltage box.

[0072] In some embodiments, such as Figure 2 As shown, the battery device 100 can be a battery pack, which also includes a housing 20 and one or more battery cell assemblies 10. The housing has internal beams, and the battery cell assemblies 10 and the battery management unit are housed within the housing 20, with the battery cell assemblies 10 and the battery management unit located on opposite sides of the beams. 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 simple cuboids, cylinders, or spheres. The housing 20 can be made of alloy materials such as aluminum alloy or iron alloy, polymer materials such as polycarbonate or polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0073] 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.

[0074] 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.

[0075] As an example, the housing 20 may include a first housing 21 and a second housing 22. The first housing 21 and the second housing 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 housing 21 may be a top cover or a bottom plate.

[0076] 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.

[0077] 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.

[0078] like Figure 3 As shown, the battery device 100 provided in this embodiment further includes a data acquisition component, a bracket 24, and a second connector 32. The data acquisition component includes a circuit board and a first connector 31, with the circuit board electrically connected to the battery cell assembly 10 and the first connector 31, respectively. The bracket 24 is fixedly mounted on the side of the beam 23, and a connector 50 is fixedly mounted on the bracket 24. The second connector 32 is located on the side of the beam 23 facing the battery management unit and is plugged into and connected to the first connector 31. The second connector 32 is used for electrical connection with the battery management unit, and a mating part is provided on the side of the second connector 32 facing the bracket 24, which is fixedly connected to the connector 50.

[0079] In some embodiments, the housing may contain two expansion beams, with the battery cell assembly 10 positioned between them. The expansion beams limit the expansion and deformation of the battery cell. Furthermore, the housing may also contain a support beam connected to the inner side of the housing sidewall, with the support beam extending perpendicularly to the extension direction of the expansion beams. For example, when the battery cell is cuboid, the extension direction of the expansion beams may be parallel to the large surface area of ​​the battery cell and perpendicular to its thickness direction, while the extension direction of the support beams may be parallel to the thickness direction of the battery cell. The large surface area refers to the surface with the largest area on the battery cell. In this example, beam 23 may specifically be one of the expansion beams, i.e., bracket 24 is fixed to the side of an expansion beam; alternatively, beam 23 may also be a support beam, i.e., bracket 24 is fixed to the side of a support beam.

[0080] The data acquisition component is used to collect status information of the battery cell assembly 10, such as voltage and temperature information. There can be one or more circuit boards, with each circuit board corresponding to one battery cell assembly 10. The number of circuit boards, the number of first connectors 31, the number of second connectors 32, and the number of brackets 24 can be the same. Each circuit board corresponds to one first connector 31 and one second connector 32, and each second connector 32 is fixedly connected to a corresponding bracket 24. The circuit board can be located on the side of the battery cell assembly 10 away from the bottom wall of the housing, with one end extending near the beam 23. The first connector 31 can be connected to one end of the circuit board. For example, the first connector 31 is a male plug, and the second connector 32 is a female socket. This embodiment does not specifically limit the relative positional relationship between the second connector 32 and the bracket 24. For example, the second connector 32 can be located above the bracket 24 or on the side of the bracket 24 away from the beam 23.

[0081] The bracket 24 and beam 23 can be connected by at least one of the following methods: screw connection, snap-fit ​​connection, welding connection, adhesive connection, or interference fit. Similarly, the connector 50 can be connected to the bracket 24 by at least one of the following methods: screw connection, snap-fit ​​connection, welding connection, adhesive connection, or interference fit. For example, in... Figure 3 In this structure, the bracket 24 can be screwed to the beam 23 using fasteners 60, such as screws, rivet nuts, or pins. The bracket 24 can be made of metal, for example, sheet metal, or it can be made of plastic, for example, injection molded.

[0082] The battery management unit is located inside the housing, specifically on the side of beam 23 opposite to the battery cell assembly 10. The connection between the mating parts and the connector 50 can be implemented using at least one of the following methods: screw connection, snap-fit, plug-in connection, welding connection, adhesive connection, or interference fit. The mating parts and the second connector 32 can also be connected using at least one of the following methods: screw connection, snap-fit, plug-in connection, welding connection, adhesive connection, or interference fit; alternatively, the mating parts and the second connector 32 can be integrally formed.

[0083] The battery device 100 of this embodiment is designed with a bracket 24 fixed to the beam 23, and a connector 50 fixed to the bracket 24. A mating part is provided on the surface of the second connector 32 facing the bracket 24, and the mating part is fixedly connected to the connector 50. Thus, by utilizing the connection between the mating part and the connector 50, the second connector 32 is effectively fixed by the bracket 24. Since the second connector 32 and the first connector 31 are plugged into each other to form a connector 30, the connector 30 composed of the first connector 31 and the second connector 32 can be effectively fixed, thereby reducing the shaking of the connector 30 and improving its stability.

[0084] It should also be noted that in some related technologies, both the first connector 31 and the second connector 32 can be directly fixed to the top of the beam 23 by screwing, that is, the beam 23 is used to fix the connector 30 composed of the first connector 31 and the second connector 32. In this example, in order to connect to both the first connector 31 and the second connector 32 at the same time, the beam 23 needs to be widened. In the technical solution of this embodiment, based on the effective fixing of the connector 30, thanks to the bracket 24 being located on the side of the beam 23 and the second connector 32 also being located on one side of the beam 23, the width of the beam 23 can be relatively small, which can benefit the improvement of the volumetric energy density of the battery device 100.

[0085] The specific connection method between the mating parts and the connecting parts 50 is described in detail below.

[0086] According to some embodiments of this application, please refer to Figures 4 to 7 The mating part 321 is configured to include a groove 3211, and the connecting part 50 includes a sliding part 51, which slidably engages with the groove 3211. In other words, the sliding part 51 slidably engages within the groove 3211. The sliding engagement direction of the sliding part 51 can be parallel or perpendicular to the mating direction of the first connector 31 and the second connector 32. For example, the sliding engagement direction of the sliding part 51 can be found in [reference needed]. Figure 6 X.

[0087] In this embodiment, the mating part 321 and the sliding part 51 of the connector 50 are slidably engaged. During assembly, only a pushing force needs to be applied to the sliding part 51, causing the sliding part 51 to slide into the groove 3211 in the X direction, thus completing the connection between the connector 50 and the mating part 321, and thereby fixing the second connector 32. In this way, the assembly is simple and improves assembly efficiency.

[0088] There are various ways to achieve the sliding engagement between the sliding part 51 and the sliding groove 3211.

[0089] In some embodiments, the slide 3211 includes a bottom wall, a stop wall, and two side walls. The two side walls are located on both sides of the bottom wall along a first direction and are connected to the bottom wall by a bend. The stop wall is connected to one end of the bottom wall along the extension direction of the slide 3211 by a bend. Thus, the bottom wall, the stop wall, the two side walls, and the surface of the second connector facing the bracket 24 form a sliding space. The first direction is perpendicular to both the extension direction of the slide 3211 and the thickness direction of the bottom wall. In this example, one of the stop wall and the sliding part 51 may have a locking hole, and the other may have a rigid locking protrusion. In this embodiment, when connecting the second connector 32 to the connector 50, the sliding part 51 can be slid into the slide groove 3211 from the entrance of the slide groove 3211, so that the sliding part 51 slides along the slide groove 3211 until the locking hole engages with the rigid locking protrusion. Then the sliding part 51 is installed in place, and the sliding part 51 cannot slide along the slide groove 3211 and disengage from the slide groove 3211 due to the restriction of the locking relationship between the locking hole and the rigid locking protrusion.

[0090] According to some embodiments of this application, the mating member 321 may also include an elastic protrusion 3212, and the connector 50 may also include a snap-fit ​​portion 512 connected to the sliding portion 51. The elastic protrusion 3212 adapts to the snap-fit ​​portion 512 by deformation to restrict the sliding portion 51 from sliding along the groove 3211.

[0091] The elastic protrusion 3212 can be a protrusion member with an elastic structure. For example, the elastic protrusion 3212 can be a protrusion made of an elastic material such as rubber or TPU (thermoplastic polyurethane elastomer). As another example, the elastic protrusion 3212 can also be configured to include a spring and a protrusion connected to the spring.

[0092] During assembly, the sliding part 51 slides into the slide groove 3211 from the inlet and slides along the slide groove 3211. Before the elastic protrusion 3212 engages with the snap-fit ​​part 512, the sliding part 51 slides and squeezes the elastic protrusion 3212 to deform until the elastic protrusion 3212 recovers its deformation and engages with the snap-fit ​​part 512. Then the sliding part 51 is installed in place and the sliding part 51 is restricted and cannot slide along the slide groove 3211 to disengage from the slide groove 3211.

[0093] In this embodiment, the mating part 321 and the second connector 32 can be integrally molded using an injection molding process. This eliminates the need for assembly between the mating part 321 and the second connector 32, and improves the structural strength of the second connector 32 without increasing costs. Furthermore, it allows the integrally molded elastic protrusion 3212 to have elastic deformation capability.

[0094] In some embodiments, the slide 3211 includes a bottom wall, a stop wall, and two side walls. The two side walls are located on both sides of the bottom wall along a first direction and are connected to the bottom wall by a bend. The stop wall is connected to one end of the bottom wall along the extension direction of the slide 3211 by a bend. Thus, the bottom wall, the stop wall, the two side walls, and the surface of the second connector facing the bracket 24 form a sliding space. The first direction is perpendicular to the extension direction of the slide 3211. In this example, the elastic protrusion 3212 can protrude from the bottom wall 3211a or the side wall 3211b. The engaging portion 512 can specifically be a slot on the surface of the sliding portion 51, and the elastic protrusion 3212 engages with the slot.

[0095] According to some embodiments of this application, please refer to Figures 4 to 8 The elastic protrusion 3212 can be configured as a wedge block, the wedge block having a first guide slope 3213 facing the inlet 3211d of the groove 3211. From one end near the inlet 3211d ( Figure 6 From the left end (middle) to the end furthest from the entrance 3211d ( Figure 6 (The middle part is the right end). The first guide slope 3213 is inclined away from the second connector 32. The surface of the wedge block opposite to the inlet 3211d abuts against the locking part 512 to restrict the sliding part 51 from sliding along the groove 3211 toward the inlet 3211d. The groove 3211 includes a stop wall 3211c, which is opposite to the inlet 3211d and abuts against the sliding part 51. The stop wall 3211c is used to prevent the sliding part 51 from continuing to slide in the direction of sliding into the groove 3211.

[0096] In this embodiment, the snap-fit ​​portion 512 is fixedly connected to the sliding portion 51. Exemplarily, the sliding portion 51 and the snap-fit ​​portion 512 can be connected by at least one of the following methods: screw connection, snap-fit ​​connection, welding connection, adhesive connection, interference fit, integral connection, etc. The first guide slope 3213 extends obliquely relative to the sliding direction (X) of the sliding portion 51; in other words, the first guide slope 3213 is set at an angle to the surface of the second connector 32 facing the bracket 24. The angle between the first guide slope 3213 and the surface of the second connector 32 facing the bracket 24 can be a range of 15°, 30°, 45°, 60°, 75°, or any combination thereof.

[0097] The surface of the wedge block away from the inlet 3211d can be perpendicular to the surface of the second connector 32 facing the bracket 24 to stop the locking part 512 and the sliding part 51 from sliding in the opposite direction of the X direction, thus restricting the sliding part 51 from sliding out of the groove 3211 from the inlet 3211d.

[0098] exist Figure 6During assembly, the sliding part 51 slides into the groove 3211 from the inlet 3211d and slides along the X direction until it contacts the first guide slope 3213. As the engaging part 512 abuts against the first guide slope 3213, the first guide slope 3213 guides the engaging part 512 towards the stop wall 3211c. Continuing to apply a pushing force to the sliding part 51, the engaging part 512 compresses the elastic protrusion 3212 while the sliding part 51 slides along the X direction, causing the elastic protrusion 3212 to deform until it passes over the elastic protrusion 3212. The elastic protrusion 3212 then returns to its original shape and abuts against the engaging part 512. Simultaneously, the end of the sliding part 51 away from the inlet 3211d abuts against the stop wall 3211c, which prevents the sliding part 51 from continuing to slide along the X direction. At this point, the sliding part 51 is in place. Thus, the two degrees of freedom of the sliding part 51 along the extension direction of the groove 3211 are completely restricted, making it impossible for the sliding part 51 to slide in the X direction and the opposite direction of the X direction.

[0099] Using this technical solution, the sliding part 51 slides, causing the engaging part 512 to gradually compress the elastic protrusion 3212. No instantaneous impact occurs between the engaging part 512 and the elastic protrusion 3212, thus reducing wear and scratches caused by instantaneous impacts. This makes the process of the sliding part 51 engaging the groove 3211 smoother and more seamless. Furthermore, the first guide slope 3213 also serves as a guide, directing the sliding part 51 to slide along the sliding engagement direction to approach the stop wall 3211c.

[0100] Please refer to some embodiments of this application. Figure 6 and Figure 8 The snap-fit ​​portion 512 can be configured to have a second guide slope 5121. Along the sliding direction of the sliding portion 51, the second guide slope 5121 is inclined away from the second connector 32, and the second guide slope 5121 faces the stop wall 3211c and is adapted to the first guide slope 3213.

[0101] The sliding direction of the sliding part 51 specifically refers to the direction in which the sliding part 51 slides into the groove. For details, please refer to [link / reference needed]. Figure 6 Middle X. From the end closest to entrance 3211d ( Figure 6 From the left end (middle) to the end furthest from the entrance 3211d ( Figure 6 (The middle part is the right end). The second guide slope 5121 is also inclined away from the second connector 32, that is, the second guide slope 5121 extends obliquely relative to the sliding direction (X) of the sliding part 51. In other words, the second guide slope 5121 is set at an angle to the surface of the second connector 32 facing the bracket 24. The angle between the second guide slope 5121 and the surface of the second connector 32 facing the bracket 24 can be a range of 15°, 30°, 45°, 60°, 75° or any two of them.

[0102] exist Figure 6 During assembly, the sliding part 51 slides into the groove 3211 from the inlet 3211d and slides along the X direction until the second guide slope 5121 contacts the first guide slope 3213. Then, a pushing force is applied to the sliding part 51, and the second guide slope 5121 fits against the first guide slope 3213 and slides along the first guide slope 3213. At the same time, the locking part 512 squeezes the elastic protrusion 3212, causing the elastic protrusion 3212 to deform until the locking part 512 passes over the elastic protrusion 3212. At this time, the sliding part 51 is installed in place.

[0103] This embodiment allows the locking portion 512 to slide in contact with the elastic protrusion 3212, which further improves the smoothness and ease of the process of the sliding portion 51 locking into the groove 3211. Furthermore, during the sliding insertion process, the contact between the locking portion 512 and the first guide slope 3213 is a surface contact, resulting in uniform force distribution between the locking portion 512 and the elastic protrusion 3212. This avoids excessive local pressure between the locking portion 512 and the elastic protrusion 3212, reducing the likelihood of the locking portion 512 scratching the elastic protrusion 3212.

[0104] The structure of the slide groove 3211 is varied, and this embodiment does not impose specific limitations on it. As described above, the slide groove 3211 can be configured to include a bottom wall, a stop wall, and two side walls. The two side walls are located on both sides of the bottom wall along a first direction and are connected to the bottom wall by a bend. The stop wall is connected to one end of the bottom wall along the extension direction of the slide groove 3211 by a bend. The ends of the side walls and the stop wall facing away from the bottom wall are connected to the surface of the second connector 32 facing the bracket 24. That is, any two of the bottom wall, the stop wall, and the side walls are connected by a bend. The first direction is perpendicular to both the extension direction of the slide groove 3211 and the thickness direction of the bottom wall. In embodiments where the mating member 321 includes a wedge block, the wedge block can specifically be located within the sliding space and connected to the surface of the second connector 32 facing the bracket 24.

[0105] In some embodiments, the slide 3211 may further be configured to include a top wall connected to the surface of the second connector 32 facing the bracket 24, and the ends of the stop wall and the side wall opposite to the bottom wall connected to the top wall. In this embodiment, the bottom wall, the stop wall, the top wall, and the two side walls form a sliding space. In embodiments where the mating member 321 includes a wedge, the wedge may be located within the sliding space and connected to the top wall.

[0106] According to some embodiments of this application, please refer to Figure 4 , Figure 5 and Figure 7The slide groove 3211 has two stop walls 3211c. The slide groove 3211 also includes two bottom walls 3211a and two side walls 3211b. The two bottom walls 3211a are located between the two side walls 3211b. The two bottom walls 3211a and the two stop walls 3211c are spaced apart along a first direction. Each stop wall 3211c is connected to one bottom wall 3211a and one side wall 3211b by a bend to form a slide block. The first direction is perpendicular to both the extension direction of the slide groove 3211 and the thickness direction of the bottom wall. For details of the first direction, please refer to [reference needed]. Figure 9 Center Y direction.

[0107] In other words, the slide 3211 includes two slides spaced apart along the first direction. Each slide includes a bottom wall 3211a, a stop wall 3211c, and a side wall 3211b. Any two of the bottom wall 3211a, the stop wall 3211c, and the side wall 3211b are connected by a bend. The end of the stop wall 3211c and the side wall 3211b facing away from the bottom wall 3211a is connected to the surface of the second connector 32 facing the bracket 24.

[0108] In this embodiment, the wedge block is connected to the surface of the second connector 32 facing the bracket 24. The wedge block can be located between the two slides or between the bottom wall 3211a of the groove of any slide and the second connector 32. In this example, each slide has an opening facing the other slide.

[0109] According to some embodiments of this application, the sliding part 51 may specifically be configured to include a connecting part 514 and two plate parts 513. The two plate parts 513 are respectively located on both sides of the connecting part 514 along the first direction and are connected to the connecting part 514 by a bend. The two plate parts 513 correspond one-to-one with the two groove bottom walls 3211a, and each plate part 513 rests on the corresponding groove bottom wall 3211a. The connecting part 514 is located between the two groove bottom walls 3211a. When the engaging part 512 abuts against the surface of the wedge block away from the inlet 3211d, the two plate parts 513 correspond one-to-one with the two stop walls 3211c and abut against each other.

[0110] The connecting portion 514 is located on the side of the two plate portions 513 opposite to the second connector. For example, the sliding portion 51 may be U-shaped. In embodiments where the connector 50 also includes a snap-fit ​​portion 512, the snap-fit ​​portion 512 may be located between and connected to the two plate portions 513.

[0111] During assembly, the plate portion 513 is inserted from the inlet between the second connector 32 and the corresponding slide bottom wall 3211a, so that the plate portion 513 rests on the corresponding slide bottom wall 3211a. A thrust is applied to the sliding portion 51, so that the plate portion 513 slides on the slide bottom wall 3211a along the extension direction of the slide groove, and the connecting portion 514 moves between the two slides along the extension direction of the slide groove.

[0112] In this embodiment, by positioning the connecting part 514 between the two bottom walls 3211a of the groove, the movement of the sliding part 51 in the first direction can be restricted, so that the sliding part 51 can slide stably along the extension direction of the groove 3211.

[0113] According to some embodiments of this application, please refer to Figure 9 The bottom wall 3211a of the groove has a guide protrusion 3214 facing the second connector 32, and the plate part 513 has a groove 511 facing away from the second connector 32. The extension direction of the groove 511 is parallel to the extension direction of the slide groove 3211, and the guide protrusion 3214 slides in cooperation with the groove 511.

[0114] As an example, such as Figure 7 and Figure 9 As shown, the bottom walls 3211a of the two slides are provided with guide protrusions 3214 protruding towards the second connector 32, and the surfaces of the two plates 513 opposite to the second connector 32 are recessed to form grooves 511. The two guide protrusions 3214 correspond one-to-one with the two grooves 511.

[0115] The extension direction of the guide protrusion 3214 is parallel to the extension direction of the groove 3211. Taking the cross section perpendicular to the extension direction of the guide protrusion 3214 as the cross section, the cross section of the guide protrusion 3214 can be semi-circular, rectangular, elliptical, etc., and the cross section shape of the groove 511 along its own extension direction is the same as the cross section shape of the guide protrusion 3214.

[0116] As another feasible example, the guide protrusion 3214 can be replaced with a surface of the plate portion 513 facing away from the second connector 32, and the groove 511 can be replaced with a surface of the groove bottom wall 3211a facing the second connector 32.

[0117] In this technical solution, the guide protrusion 3214 is adapted to the groove 511 to play a guiding role, guiding the sliding part 51 to reliably slide along the extension direction of the groove 3211. Furthermore, the cooperation between the guide protrusion 3214 and the groove 511 can also restrict the sliding part 51 from moving in a direction that is perpendicular to both the extension direction of the groove 3211 and the protrusion direction of the guide protrusion 3214.

[0118] According to some embodiments of this application, please refer to Figure 10The bracket 24 may be provided with a locking hole 2421. Please refer to [link / reference]. Figure 4 , Figure 5 and Figure 9 The connector 50 may further include a resilient retaining portion 53, which is configured to have a locked state and an unlocked state. In the locked state, the resilient retaining portion 53 passes through the lock hole 2421 and is engaged with the bracket 24. In the unlocked state, the resilient retaining portion 53 can pass through the lock hole 2421 and disengage from the bracket 24.

[0119] The bracket 24 may specifically include a connecting plate 241 and a support plate 242 connected by a bend. The connecting plate 241 is fixedly connected to the beam 23, and a locking hole 2421 is provided in the support plate 242 and penetrates the thickness of the support plate 242. The locking hole 2421 may be circular, rectangular, elongated, or oblong, etc., and this embodiment does not impose a specific limitation on it. The connecting plate 241 may have a connecting hole 244, through which a screw can pass and be screwed to the beam 23, so that the bracket 24 is screwed to the beam 23. The number of connecting holes 244 and screws is not limited; there may be one or more, such as... Figure 3 It has two screws, such as Figure 10 It has two connection holes 244.

[0120] During assembly, the sliding part 51 is first slidably inserted into the mating part 321, connecting the connector 50 to the second connector 32. Then, the first connector 31 and the second connector 32 are plugged in. Next, an external force is applied to the elastic retaining part 53, causing it to deform and switch to the unlocked state. The elastic retaining part 53 is then held in the unlocked state and inserted into the lock hole 2421. The external force is then removed, and the elastic retaining part 53 returns to its original deformation and engages with the bracket 24, thus locking the elastic retaining part 53. When maintenance of the connector 30 is required, an external force is applied to the elastic retaining part 53 again, switching it to the unlocked state. The elastic retaining part 53 is then held in the unlocked state and disengaged from the lock hole 2421.

[0121] With this technical solution, the connector 50 and the bracket 24 can be detachably connected, and the connection method is simple, which makes it easy to maintain or replace the connector 30.

[0122] The elastic retaining part 53 can be implemented in various ways. In some embodiments, the elastic retaining part 53 can be configured to include two elastic posts spaced apart, extending along the center line of the locking hole 2421. One end of each elastic post is connected to the sliding part 51, and the other end is provided with a backstop protrusion. The backstop protrusions of the two elastic posts face away from each other. In the locked state, the backstop protrusions of the two elastic posts are located on the side of the support plate 242 away from the sliding part 51 and abut against the support plate 242; the two elastic posts can deform to move closer to each other, thereby reducing the distance between the two elastic posts so that the locking hole 2421 can pass through.

[0123] According to some embodiments of this application, the elastic holding portion 53 may specifically include a main body portion 531 and a plurality of elastic holding arms 532 arranged circumferentially spaced along the main body portion 531, wherein the elastic holding arms 532 have a first end ( Figure 9 The middle is the upper end) and the second end ( Figure 9 (The middle is the lower end). The first end is closer to the second connector 32 than the second end. The second end is connected to the main body 531. From the second end to the first end, the elastic locking arm 532 gradually moves away from the surface of the main body 531, that is, it extends at an angle away from the surface of the main body 531.

[0124] Please continue reading. Figure 4 , Figure 5 and Figure 9 Two elastic locking arms 532 are provided, and the two elastic locking arms 532 are respectively located on both sides of the main body 531. The two elastic locking arms 532 can be arranged symmetrically. The first end is spaced a certain distance from the main body 531, so the first end can move relative to the main body 531.

[0125] In this embodiment, the engagement of the elastic retaining portion 53 with the bracket 24 can be understood as the first end abutting against the surface of the support plate 242 away from the sliding portion 51. As an example, the surface of the first end facing the second connector 32 abuts against the support plate 242. As an example, such as... Figure 9 As shown, a stepped portion 5321 is formed at the end of the first end facing the second connector 32. The first end has a first stepped surface 5322 and a second stepped surface 5323 that are parallel to each other. The first stepped surface 5322 is further away from the second connector 32 than the second stepped surface 5323. In the locked state, the stepped portion 5321 extends into the lock hole 2421, and the first stepped surface 5322 abuts against the surface of the support plate 242 away from the sliding portion 51.

[0126] Pressing the elastic locking arm 532 causes it to deform elastically, allowing the first ends of the two elastic locking arms 532 to come together. At this time, the elastic holding part 53 can pass through the locking hole 2421. Removing the external force on the elastic locking arm 532 causes it to return to its elastic deformation, and the first ends of the two elastic locking arms 532 move away from each other. At this time, the elastic holding part 53 can no longer pass through the locking hole 2421 and is locked to the support plate 242.

[0127] According to some embodiments of this application, the connector 50 may further include a stop portion 52 connected to the elastic retaining portion 53, wherein in the locked state, the stop portion 52 abuts against the surface of the bracket 24 facing the second connector 32.

[0128] Along the extension direction of the center line of the lock hole 2421, the sliding part 51, the stop part 52, and the elastic retaining part 53 are connected in sequence. In the locked state, the stop part 52 and the elastic retaining part 53 abut against the two sides of the support plate 242 respectively. At this time, the two degrees of freedom of the connector 50 in the extension direction of the center line of the lock hole 2421 are restricted, so that the connector 50 cannot move relative to the bracket 24 in the extension direction of the center line of the lock hole 2421.

[0129] For example, the stop portion 52 may be in the form of Figure 9 The arc-shaped structure shown can also be a flat structure, as long as the projection of the stop part 52 along the extension direction of the center line of the lock hole 2421 on the support plate 242 does not coincide with the lock hole 2421, so that the stop part 52 cannot pass through the lock hole 2421.

[0130] Among them, such as Figure 9 As shown, the first end can be a free end, that is, the first end is spaced a certain distance from the stop part 52, or the first end can be connected to the stop part 52 by a spring or shape memory alloy wire.

[0131] With this technical solution, in the locked state, the stop part 52 and the elastic retaining part 53 abut against the two sides of the support plate 242 respectively, so that the connector 50 cannot move relative to the bracket 24 along the extension direction of the center line of the lock hole 2421, so that the connector 50 is held in the bracket 24, thus making the connector 50 stable in the bracket 24 to reliably fix the second connector 32.

[0132] According to some embodiments of this application, one of the bracket 24 and the beam 23 is provided with a positioning post 243 and the other is provided with a positioning hole, and the positioning post 243 is inserted into the positioning hole.

[0133] For example, please refer to Figure 10 The bracket 24 is equipped with a positioning post 243, and the beam 23 is equipped with a positioning hole. Specifically, the positioning post 243 is fixedly connected to the connecting plate 241. As an example, the connecting plate 241 is equipped with a positioning hole penetrating its own thickness, and the beam 23 is equipped with a positioning post 243. The positioning post 243 can be a cylindrical structure, meaning its cross-section perpendicular to the axial direction is circular, and the axial direction of the positioning post 243 can also be understood as the direction of its extension. Of course, the cross-section perpendicular to the axial direction of the positioning post 243 can also be elliptical, rectangular, prismatic, or other shapes. Figure 10When the bracket 24 has a connection hole 244, the positioning post 243 can be closer to the support plate 242 than the connection hole 244.

[0134] By adopting this technical solution, the matching relationship between the positioning column 243 and the positioning hole can play a role in positioning and preventing mistakes. This is conducive to quickly finding the installation position of the bracket 24, thereby improving the installation efficiency of the bracket 24 being correctly installed on the beam 23.

[0135] During assembly, the positioning pin 243 can be inserted into the positioning hole first, and then the bracket 24 and beam 23 can be connected by screws, welding or other methods. Thus, during the process of fixing the bracket 24 and beam 23 together, thanks to the insertion and cooperation between the positioning pin 243 and the positioning hole, the bracket 24 is not easy to move, which helps to improve the stability of the assembly process of the bracket 24 and beam 23.

[0136] In some embodiments, the bracket 24 may further include a reinforcing plate 245, which is connected to both the connecting plate 241 and the support plate 242. Multiple reinforcing plates 245 may be provided, such as... Figure 3 The diagram shows two reinforcing plates 245, which are located on both sides of the connecting plate 241 and the support plate 242, respectively. In this embodiment, the introduction of reinforcing plates 245 improves the structural strength of the bracket 24, enabling the bracket 24 to stably support and fix the connector 30.

[0137] An embodiment of the second aspect of this application provides an electrical device including the battery device 100 in the above embodiments, the battery device 100 being used to provide electrical energy.

[0138] The electrical equipment includes vehicles (such as vehicles, electric vehicles, ships, spacecraft, etc.), display devices (such as mobile phones, tablets, laptops, etc.), electric toys, power tools, etc. It is understood that the electrical equipment provided in this application, because it uses any of the above-mentioned battery devices 100, has all the beneficial effects of the battery devices 100, which will not be elaborated here.

[0139] An embodiment of the third aspect of this application provides an energy storage device, which includes the battery device 100 in the above embodiments, the battery device 100 being used for energy storage.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] A specific embodiment of this application is described below. It should be understood that this specific embodiment is described for illustrative purposes only and should not be construed as limiting the scope of this application.

[0144] Please see Figures 3 to 10 The battery device 100 includes a housing, a data acquisition component, a bracket 24, a second connector 32 (also known as a female socket), a battery management unit, and a connector 50. A beam 23 is provided inside the housing. The battery cell assembly 10 and the battery management unit are both housed inside the housing and are located on both sides of the beam 23. The data acquisition component includes a connected circuit board and a first connector 31 (also known as a male plug). Each circuit board is located on the upper side of a battery cell assembly 10 to acquire the status information of the corresponding battery cell assembly 10. The first connector 31 is plugged into and connected to the second connector 32. The second connector 32 is electrically connected to the battery management unit.

[0145] The bracket 24 includes a connecting plate 241 and a support plate 242 connected by a bend. The connecting plate 241 has two connecting holes 244, and two screws each pass through one connecting hole 244 and are screwed to the beam 23, so that the bracket 24 is screwed to the beam 23. A positioning post 243 is fixedly connected to the connecting plate 241. The positioning post 243 is closer to the support plate 242 than the connecting holes 244. The beam 23 has positioning holes, and the positioning post 243 is inserted into the positioning holes. The support plate 242 has a locking hole 2421, which is oblong in shape. The bracket 24 also includes a reinforcing plate 245, which is connected to both the connecting plate 241 and the support plate 242.

[0146] Both the first connector 31 and the second connector 32 are located above the bracket 24. The surface of the second connector 32 facing the bracket 24 is provided with a groove 3211 and an elastic protrusion 3212. The groove 3211 includes two slides spaced apart and arranged opposite to each other. Each slide includes a bottom wall 3211a, a stop wall 3211c, and a side wall 3211b. Any two of the bottom wall 3211a, the stop wall 3211c, and the side wall 3211b are connected by a bend. The end of the stop wall 3211c and the side wall 3211b away from the bottom wall 3211a is also connected to the surface of the second connector 32 facing the bracket 24. The two side walls 3211b are spaced apart along the first direction (Y direction). The stop wall 3211c is opposite to the inlet 3211d of the groove 3211. The elastic protrusion 3212 is a wedge-shaped block located between two slide blocks. The wedge block has a first guide slope 3213 facing the inlet 3211d of the groove 3211. The first guide slope 3213 slopes away from the end near the inlet 3211d to the end near the stop wall 3211c, moving away from the second connector 32. The groove 3211 and the elastic protrusion 3212 are integrally formed with the second connector 32 using an injection molding process.

[0147] The connector 50 is specifically a cable tie head, which includes a sliding part 51, a stop part 52, and an elastic retaining part 53 connected in sequence. The sliding part 51 includes a snap-fit ​​part 512, a connecting part 514, and two plate parts 513. The two plate parts 513 are located on both sides of the connecting part 514 along a first direction and are connected to the connecting part 514 by a bend. The snap-fit ​​part 512 is located between the two plate parts 513 and is connected to the two plate parts 513. The snap-fit ​​part 512 has a second guide slope 5121, which faces the stop wall 3211c. The second guide slope 5121 slopes away from the second connector 32 from one end near the inlet 3211d to one end near the stop wall 3211c. The second guide slope 5121 is adapted to the first guide slope 3213. The stop part 52 has an arc-shaped structure. The elastic retaining portion 53 includes a main body 531 and two elastic retaining arms 532 symmetrically arranged on both sides of the main body 531. Each elastic retaining arm 532 has a first end and a second end. The first end is closer to the second connector 32 than the second end, and the second end is connected to the main body 531. From the second end to the first end, the elastic retaining arm 532 extends obliquely away from the surface of the main body 531. The end of the first end facing the second connector 32 forms a stepped portion 5321, and the first end has a first stepped surface 5322 and a second stepped surface 5323 that are parallel to each other.

[0148] The assembly process of the battery device 100 in this embodiment may include the following steps.

[0149] Step a: Insert the positioning post 243 into the positioning hole, and screw the bracket 24 and the beam 23 together.

[0150] Step b: Connect the connector 50 to the second connector 32. Specifically, insert the plate portion 513 through the inlet between the second connector 32 and the corresponding slide bottom wall 3211a, so that the plate portion 513 rests on the corresponding slide bottom wall 3211a. Apply a pushing force to the sliding portion 51, so that the plate portion 513 slides along the X direction on the slide bottom wall 3211a until the sliding portion 51 slides to the point where the second guide slope 5121 contacts the first guide slope 3213; continue to apply a pushing force to the sliding portion 51, and the second guide slope 5121 adheres to the first guide slope 3213. The guide slope 3213 slides, and the locking part 512 presses the elastic protrusion 3212, causing the elastic protrusion 3212 to deform; until the locking part 512 passes the elastic protrusion 3212, the elastic protrusion 3212 returns to its deformed state, and the surface of the elastic protrusion 3212 away from the inlet abuts against the locking part 512. At the same time, the two plate parts 513 correspond to and abut against the two stop walls 3211c one by one, and the two degrees of freedom of the sliding part 51 along the extension direction of the slide groove 3211 are completely restricted.

[0151] Step c: Connect the second connector 32 to the first connector 31.

[0152] Step c: Connect the connector 50 to the bracket 24. Specifically, press the elastic locking arms 532, causing them to elastically deform. The first ends of the two elastic locking arms 532 come together to pass through the lock hole 2421, at which point the elastic holding part 53 is in the unlocked state. Keep the elastic holding part 53 in the unlocked state and pass it through the lock hole 2421 until the stop part 52 abuts against the surface of the bracket 24 facing the second connector 32. Then, remove the external force, and the first ends of the two elastic locking arms 532 move away from the main body 531 to restore their elastic deformation. The stepped part 5321 of the first end extends into the lock hole 2421, and the first stepped surface 5322 abuts against the surface of the support plate 242 away from the sliding part 51, so that the elastic holding part 53 is locked in the bracket 24.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box-shaped structure has internal beams. The battery cell assembly and the battery management unit are both located inside the box and on both sides of the beam, respectively; The acquisition component includes a circuit board and a first connector, wherein the circuit board is electrically connected to the battery cell assembly and the first connector, respectively. A bracket is fixedly installed on the side of the beam, and the bracket is fixedly equipped with a connector; The second connector is located on the side of the beam facing the battery management unit and is plugged into and connected to the first connector. The second connector is electrically connected to the battery management unit. The side of the second connector facing the bracket is provided with a mating part, which is fixedly connected to the connector.

2. The battery device according to claim 1, characterized in that, The mating component is configured to include a groove; the connecting component includes a sliding portion, which slidably engages with the groove.

3. The battery device according to claim 2, characterized in that, The mating component further includes an elastic protrusion, and the connecting component further includes a snap-fit ​​portion connected to the sliding portion. The elastic protrusion adapts to the snap-fit ​​portion by deformation to restrict the sliding portion from sliding along the groove.

4. The battery device according to claim 3, characterized in that, The elastic protrusion is a wedge-shaped block, which has a first guide slope facing the inlet of the groove. From one end near the inlet to the end away from the inlet, the first guide slope is inclined in a direction away from the second connector. The surface of the wedge block facing away from the inlet abuts against the snap-fit ​​portion to restrict the sliding portion from sliding along the groove toward the inlet. The chute includes a stop wall, which is opposite to the inlet and abuts against the sliding part. The stop wall is used to prevent the sliding part from continuing to slide in the direction of sliding into the chute.

5. The battery device according to claim 4, characterized in that, The snap-fit ​​portion is configured to have a second guide slope; along the sliding direction of the sliding portion, the second guide slope is inclined away from the second connector, and the second guide slope faces the stop wall and is adapted to the first guide slope.

6. The battery device according to claim 4, characterized in that, The slide groove has two stop walls, and the slide groove also includes two bottom walls and two side walls. The two bottom walls are located between the two side walls. The two stop walls and the two bottom walls are spaced apart along a first direction. Each stop wall is connected to one bottom wall and one side wall by a bend. The first direction is perpendicular to the sliding direction of the sliding part and the thickness direction of the bottom wall.

7. The battery device according to claim 6, characterized in that, The sliding part includes a connecting part and two plate parts. The two plate parts are respectively located on both sides of the connecting part along the first direction and are connected to the connecting part by a bend. The two plate parts correspond one-to-one with the two bottom walls of the groove. Each plate part rests on the corresponding bottom wall of the groove. The connecting part is located between the two bottom walls of the groove. When the snap-fit ​​part abuts against the surface of the wedge block away from the inlet, the two plate parts correspond one-to-one with the two stop walls and abut against each other.

8. The battery device according to claim 7, characterized in that, The bottom wall of the groove has a guide protrusion facing the second connector, and the plate has a groove facing away from the second connector. The extension direction of the groove is parallel to the extension direction of the slide groove, and the guide protrusion slides in conjunction with the groove.

9. The battery device according to any one of claims 1 to 8, characterized in that, The bracket is provided with a locking hole; the connector includes an elastic retaining part, which is configured to have a locked state and an unlocked state; in the locked state, the elastic retaining part passes through the locking hole and is engaged with the bracket; in the unlocked state, the elastic retaining part can pass through the locking hole and can be disengaged from the bracket.

10. The battery device according to claim 9, characterized in that, The elastic holding part includes a main body and a plurality of elastic holding arms arranged circumferentially spaced along the main body. Each elastic holding arm has a first end and a second end. The first end is closer to the second connector than the second end. The second end is connected to the main body. From the second end to the first end, the elastic holding arm gradually moves away from the surface of the main body.

11. The battery device according to claim 9, characterized in that, The connector also includes a stop portion connected to the elastic retaining portion, wherein in the locked state, the stop portion abuts against the surface of the bracket facing the second connector.

12. The battery device according to any one of claims 1 to 8, characterized in that, One of the beam and the bracket is provided with a positioning post, and the other is provided with a positioning hole. The positioning post and the positioning hole are inserted into each other.

13. An electrical appliance, characterized in that, The electrical equipment includes a battery device as described in any one of claims 1 to 12, the battery device being used to provide electrical energy.

14. An energy storage device, characterized in that, The energy storage device includes a battery device as described in any one of claims 1 to 12, the battery device being used to store electrical energy.

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