Battery device, power consuming device, and power distribution mechanism

Abstract

The embodiment of the application provides a battery device, a power utilization equipment and a power distribution mechanism, the power distribution mechanism comprises a power distribution box body and a fixing assembly, the power distribution box body has a containing cavity and a first wall, the first wall is provided with a mounting hole communicated with the containing cavity, the fixing assembly comprises a fixing piece, a first connecting piece and a second connecting piece, the fixing piece is arranged on the side of the first wall along a first direction and faces the containing cavity, the fixing piece is provided with a first connecting hole and a second connecting hole, the first connecting hole is communicated with the mounting hole and the containing cavity, the first connecting piece is arranged through the first connecting hole and the mounting hole and connected with the fixing piece and the first wall at both ends, the fixing piece has a first surface and a first assembly surface along the first direction and facing the first wall, the first assembly surface protrudes from the first surface and is connected with the first surface and away from the first wall, a gap is formed between the first assembly surface and the first wall, the second connecting hole is communicated with the gap and the containing cavity, and the second connecting piece is arranged through the second connecting hole and partially arranged in the gap, so that the reliability of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a battery device, electrical equipment, and power distribution mechanism. Background Technology

[0002] With the development of new energy technologies, battery devices are being used more and more widely, such as in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0003] In the development of battery technology, how to improve the reliability of battery devices is a technical problem that urgently needs to be solved. Utility Model Content

[0004] In view of the above problems, this application provides a battery device, electrical equipment and power distribution mechanism, which helps to improve the reliability of the battery device.

[0005] In a first aspect, this application provides a battery device, comprising: a power distribution mechanism including a power distribution box and a fixing component; the power distribution box having a receiving cavity, the power distribution box including a first wall disposed on one side of the receiving cavity along a first direction, and having a mounting hole communicating with the receiving cavity; the fixing component including a fixing member, a first connecting member and a second connecting member, the first connecting member and the second connecting member being connected to the fixing member; the fixing member being disposed on the side of the first wall facing the receiving cavity along the first direction, the fixing member having a first connecting hole and a second connecting hole; the first connecting hole communicating with the mounting hole and the receiving cavity; the first connecting member passing through the first connecting hole and the mounting hole; the two ends of the first connecting member being sealedly connected to the fixing member and the first wall respectively; along the first direction, the side of the fixing member facing the first wall having a first surface and a first mounting surface, and the first mounting surface protruding from the first surface on the side away from the first wall; the first surface being connected to the first mounting surface; a gap being between the first mounting surface and the first wall along the first direction; the second connecting hole communicating with the gap and the receiving cavity; the second connecting member passing through the second connecting hole; and a portion of the second connecting member being disposed in the gap.

[0006] In some embodiments of the first aspect, a fixing component is provided on the first wall of the distribution box. The fixing component includes a fixing member, a first connecting member, and a second connecting member. The first connecting member and the second connecting member are both connected to the fixing member, and the first connecting member is also connected to the first wall. This allows other structures located in the receiving cavity to be fixed to the fixing member through the first connecting member and the second connecting member, thereby fixing them in the distribution box to improve their stability. This is beneficial to improving the reliability of the power distribution mechanism and the battery device.

[0007] In some embodiments, the fixing assembly further includes an insulating base disposed on the side of the fixing member away from the first wall along a first direction, and the insulating base is connected to the first connector and the second connector respectively.

[0008] In the above technical solution, the insulating base can be used to install electrical components. By setting the insulating base to be able to connect to the first connector and the second connector respectively, the probability of the insulating base shaking or displacing can be effectively reduced, which is beneficial to improving the stability of the insulating base, thereby improving the reliability of the power distribution mechanism and the battery device.

[0009] In some embodiments, the second connector protrudes from the fixing member on the side opposite to the first wall along the first direction.

[0010] The above-mentioned configuration facilitates the assembly of the second connector with other structures within the distribution box, thereby improving assembly efficiency and reducing assembly difficulty.

[0011] In some embodiments, the second connector is threaded into the second connecting hole, and / or, one end of the second connector along the first direction has a limiting end that abuts against the first mounting surface.

[0012] In the above technical solution, the connection strength between the second connector and the fixing member can be improved by threaded connection, and the second connector can be limited along the first direction by limiting end, so as to improve the reliability of the connection between the second connector and the fixing member, thereby improving the reliability of the power distribution mechanism and battery device.

[0013] In some embodiments, the fastener is provided with a plurality of first connecting holes, and the first connecting member is provided in a one-to-one correspondence with the first connecting hole; and / or, the fastener is provided with a plurality of second connecting holes, and the second connecting member is provided in a one-to-one correspondence with the second connecting hole. This arrangement improves the efficiency of assembling the fastening component with the first wall.

[0014] In some embodiments, the first surface is abutted against the first wall. This arrangement improves the tightness between the fastener and the first wall, thereby enhancing the reliability of the power distribution mechanism and the battery device.

[0015] In some embodiments, the first connecting hole includes a first hole and a second hole that are connected to each other. Along a first direction, the first hole is located on the side of the second hole facing the first wall, and at least one of the first hole and the second hole is in a sealing fit with the first connector. This arrangement improves the flexibility and versatility of machining the assembly hole.

[0016] In some embodiments, the inner wall profile of at least one of the first hole and the second hole is the same as the outer peripheral profile shape of the first connector.

[0017] By setting it in the above manner, the inner wall of the first hole and / or the second hole can fit better with the outer wall of the first connector, thereby reducing the gap between them and further improving the tightness of the sealing fit between the first connector and the first connecting hole.

[0018] In some embodiments, in an orthographic projection plane perpendicular to the first direction, the projection outline of the second hole surrounds the projection outline of the first hole; or, in an orthographic projection plane perpendicular to the first direction, the projection outline of the second hole partially overlaps with the projection outline of the first hole. This configuration improves the flexibility and versatility of processing the first connecting hole.

[0019] In some embodiments, a stepped surface is formed between the inner wall of the first hole and the inner wall of the second hole along a first direction, and a portion of the first connector is supported on the stepped surface.

[0020] In the above technical solution, the stepped surface can provide support for the first connector to reduce the probability of displacement of the first connector along the first direction, thereby improving the reliability of the power distribution mechanism and the battery device.

[0021] In some embodiments, the fastener includes a first plate and a second plate arranged along a first direction. Along the first direction, the first plate is disposed on the side of the second plate facing the first wall. The first plate has a first hole, and the second plate has a second hole. The second plate has a second connecting hole. Along the first direction, the side of the first plate facing the first wall has a first surface, and the side of the second plate facing the first wall has a first mounting surface.

[0022] In the above technical solution, the fastener can be composed of a first plate and a second plate that are processed independently, which is beneficial to improving the processing flexibility and versatility of the fastener.

[0023] In some embodiments, the fastener has a first welding portion, through which the first plate and the second plate are welded. This arrangement helps to improve the connection strength between the first plate and the second plate.

[0024] In some embodiments, the thickness of the first plate is L1 along the first direction, where 1.5mm ≤ L1 ≤ 5mm; and / or, the thickness of the second plate is L2 along the first direction, where 1.5mm ≤ L2 ≤ 4mm.

[0025] In the above technical solution, by setting the values ​​of L1 and L2 within the above range, the first plate and the second plate can each have sufficient strength, while the overall thickness of the fastener can be set within a suitable range.

[0026] In some embodiments, 2mm≤L1≤3mm, and / or 2mm≤L2≤3mm.

[0027] In the above technical solution, by further setting the values ​​of L1 and L2 within the above range, it is beneficial to reduce the overall area occupied by the fastener while satisfying the structural strength of the first plate and the second plate.

[0028] In some embodiments, the fastener is a one-piece molded structure. This design helps improve processing efficiency.

[0029] In some embodiments, the thickness of the fastener along the first direction is L, where 1.5mm ≤ L ≤ 5mm.

[0030] In the above technical solution, by setting the value of L within the above range, the fastener can have sufficient strength, and at the same time, the overall thickness of the fastener can be set within a suitable range.

[0031] In some embodiments, 2mm ≤ L ≤ 3mm.

[0032] In the above technical solution, by further setting the value of L within the above range, it is beneficial to reduce the overall area occupied by the fastener while satisfying the structural strength of the fastener.

[0033] In some embodiments, along the first direction, the fastener has a second surface and a second mounting surface on the side away from the first wall, the second surface being connected to the second mounting surface, and in a projection plane perpendicular to the first direction, the orthographic projection of the first surface and the orthographic projection of the second surface at least partially overlap, and the orthographic projection of the first mounting surface and the orthographic projection of the second mounting surface at least partially overlap, and a second connecting hole is provided through the first mounting surface and the second mounting surface; along the first direction, the distance between the first mounting surface and the second mounting surface is less than or equal to the distance between the first surface and the second surface.

[0034] In the above technical solution, the distance between the first assembly surface and the second assembly surface can be equal to or less than the distance between the first surface and the second surface, which is beneficial to improving the flexibility of processing.

[0035] In some embodiments, the second surface and the second mounting surface are located in the same plane, or, along the first direction, the second mounting surface protrudes from the second surface toward the side opposite to the first mounting surface. This configuration improves processing flexibility.

[0036] In some embodiments, along the first direction, the maximum distance between the second mounting surface and the second surface is D, where 0 ≤ D ≤ 4 mm.

[0037] In the above technical solution, by setting the value of D within the above range, the second connecting hole has sufficient size in the first direction to improve the limiting effect of the second connecting hole on the second connecting member, thereby improving the reliability of the power distribution mechanism and the battery device.

[0038] In some embodiments, 2mm ≤ D ≤ 3mm.

[0039] In the above technical solution, by further setting the value of D within the above range, the second connecting hole can have sufficient size along the first direction, and the space occupied by the fastener in the receiving cavity can be reduced.

[0040] In some embodiments, the fastener is welded to the first wall. This arrangement helps to improve the connection strength between the fastener and the first wall.

[0041] In some embodiments, the distribution box further includes a second wall, and both the first wall and the second wall are disposed on the same side of the receiving cavity along a first direction. Along the first direction, the side of the first wall facing the fixing component protrudes from the second wall. This arrangement helps to optimize the internal spatial layout of the distribution box.

[0042] Secondly, this application provides an electrical device including a battery device according to any embodiment of the first aspect, the battery device being used to provide electrical energy or store electrical energy.

[0043] Thirdly, this application provides a power distribution mechanism, comprising: a power distribution box having a receiving cavity, the power distribution box including a first wall, the first wall being disposed on one side of the receiving cavity along a first direction and having a mounting hole communicating with the receiving cavity; a fixing component including a fixing member, a first connecting member and a second connecting member, the first connecting member and the second connecting member being connected to the fixing member, the fixing member being disposed on the side of the first wall facing the receiving cavity along the first direction, the fixing member having a first connecting hole and a second connecting hole, the first connecting hole communicating with the mounting hole and the receiving cavity, the first connecting member passing through the first connecting hole and the mounting hole, the two ends of the first connecting member being respectively sealedly connected to the fixing member and the first wall; along the first direction, the side of the fixing member facing the first wall has a first surface and a first mounting surface, and the first mounting surface protruding from the first surface on the side away from the first wall, the first surface being connected to the first mounting surface, the first mounting surface and the first wall having a gap along the first direction, the second connecting hole communicating with the gap and the receiving cavity, the second connecting member passing through the second connecting hole, and a portion of the second connecting member being disposed in the gap.

[0044] 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

[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0046] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments; Figure 2 This application provides a schematic diagram of the structure of a battery cell assembly in a battery device according to some embodiments; Figure 3 This application provides an exploded structural diagram of a battery device according to some embodiments. Figure 4 This application provides an exploded structural diagram of a single battery cell for some embodiments. Figure 5 This is a schematic diagram of the power distribution mechanism provided in some embodiments of this application; Figure 6 This is a schematic diagram of the structure of the distribution box in the power distribution mechanism provided in some embodiments of this application; Figure 7 A partial structural schematic diagram of a power distribution mechanism provided in some embodiments of this application; Figure 8 A partial structural schematic diagram of a power distribution mechanism provided for other embodiments of this application; Figure 9 Partial cross-sectional view of a power distribution mechanism provided for some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the fixing component provided in some embodiments of this application; Figure 11 This is a schematic diagram of the structure of the first plate in a fixing assembly provided in some embodiments of this application; Figure 12 A partial structural schematic diagram of the fixing component provided in some embodiments of this application; Figure 13 Partial cross-sectional view of a power distribution mechanism provided for other embodiments of this application; Figure 14 A partial cross-sectional view of a power distribution mechanism provided for some embodiments of this application; Figure 15 Schematic diagrams of the fixing components provided in other embodiments of this application; Figure 16 This is a schematic diagram of the structure of a fixing component provided in some embodiments of this application.

[0047] The reference numerals in the accompanying drawings for the specific embodiments are as follows: 1000, Vehicle; 100, Battery Unit; 200, Controller; 300, Motor; 400, Battery Cell Assembly; 4, Battery Housing; 41, First Housing; 42, Second Housing; 3, Battery Cell; 31, Housing; 32, End Cap; 33, Shell; 34, Electrode Assembly; 2. Power distribution mechanism; 21. Power distribution box; 201. Receiving cavity; 211. First wall; 202. Mounting hole; 212. Second wall; 1. Fixing component; 10. Fixing element; 101. First connecting hole; 1011. First hole; 1012. Second hole; 102. Second connecting hole; 110. First surface; 120. First mounting surface; 130. Second surface; 140. Second mounting surface; 103. Gap; 104. Stepped surface; 11. First plate; 12. Second plate; 105. First welded part; 106. Second welded part; 20. First connector; 30. Second connector; 301. Top end; 302. Bottom end; 310. Limiting end; 40. Insulating base; X, the first direction. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application 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 description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0050] In this application, the reference to "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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0054] In this application, "multiple" means two or more (including two).

[0055] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0056] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0057] The battery cell 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.

[0058] During operation, battery devices require a power distribution mechanism for control and protection to ensure stable operation. This mechanism, a control unit for distributing energy, is used to distribute high voltage across the battery device. In related technologies, the poor structural reliability of the power distribution mechanism within the battery device leads to reliability risks.

[0059] Based on the above-mentioned technical problems, this application provides a battery device, including a power distribution mechanism. The power distribution mechanism includes a power distribution box and a fixing component. The power distribution box has a receiving cavity and includes a first wall. The first wall is disposed on one side of the receiving cavity along a first direction and has a mounting hole communicating with the receiving cavity. The fixing component includes a fixing member, a first connecting member, and a second connecting member. The first connecting member and the second connecting member are both connected to the fixing member. The fixing member is disposed on the side of the first wall facing the receiving cavity along the first direction. The fixing member has a first connecting hole and a second connecting hole. The first connecting hole communicates with the mounting hole and the receiving cavity. The first connecting member passes through the first connecting hole and the mounting hole. The two ends of the first connecting member are respectively sealed and connected to the fixing member and the first wall. Along the first direction, the side of the fixing member facing the first wall has a first surface and a first mounting surface. The first mounting surface protrudes from the first surface on the side away from the first wall. The first surface is connected to the first mounting surface. There is a gap between the first mounting surface and the first wall along the first direction. The second connecting hole communicates with the gap and the receiving cavity. The second connecting member passes through the second connecting hole, and part of the second connecting member is disposed in the gap.

[0060] By providing a fixing component on the first wall of the distribution box, the fixing component includes a fixing member, a first connecting member and a second connecting member. The first connecting member and the second connecting member are both connected to the fixing member, and the first connecting member is also connected to the first wall. This allows other structures located in the receiving cavity to be fixed to the fixing member through the first connecting member and the second connecting member, thereby fixing them in the distribution box to improve their stability and improve the reliability of the power distribution mechanism and battery device.

[0061] The technical solutions described in the embodiments of this application are applicable to various battery devices or electrical equipment that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0062] It should be understood that the technical solutions described in the embodiments of this application are not limited to the devices described above, but can also be applied to all devices that use battery devices. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0063] For example, such as Figure 1 As shown, Figure 1This is a schematic diagram of the structure of a vehicle 1000 according to one embodiment 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. The vehicle 1000 may contain a motor 300, a controller 200, and a battery device 100. The controller 200 controls the battery device 100 to supply power to the motor 300. For example, 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's electrical system, such as meeting the power requirements for starting, navigation, and operation of the vehicle 1000. In another embodiment 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, replacing or partially replacing gasoline or natural gas to provide driving power for the vehicle 1000.

[0064] Please see Figure 2 The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 400 for providing voltage and capacity. The battery cell assembly 400 may include multiple battery cells 3, which are connected in series, parallel or mixed connection through a busbar.

[0065] In some embodiments, the battery cell assembly 400 is typically formed by arranging multiple battery cells 3.

[0066] As an example, the battery cell assembly 400 can be a battery module, which is formed by arranging and fixing multiple battery cells 3 to form an independent module. As an example, the battery module can be formed by binding multiple battery cells 3 together with cable ties.

[0067] Please see Figure 3 As an example, the battery cell assembly 400 can be a battery module, which can be housed in the battery housing 4 by fixing the battery module in the battery housing 4.

[0068] As an example, the battery cell assembly 400 can also be housed in the battery housing 4 by directly fixing multiple battery cells 3 to the battery housing 4.

[0069] As an example, the battery housing 4 may include a first housing 41 and a second housing 42. The first housing 41 and the second housing 42 are fastened together to form a cavity, thereby creating a closed space inside the battery housing 4 to house the battery cell assembly 400. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 41 may be a top cover or a bottom plate.

[0070] As an example, the battery housing 4 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 battery housing 4 forms an enclosed space to accommodate the battery cell assembly 400.

[0071] In some embodiments, the battery housing 4 may be part of the chassis structure of the vehicle 1000. For example, a portion of the battery housing 4 may be at least a portion of the floor of the vehicle 1000, or a portion of the battery housing 4 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0072] The battery housing 4 can be a simple three-dimensional structure such as a single cuboid or cylinder, or it can be a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids or cylinders. This application embodiment does not limit this.

[0073] Specifically, the battery housing 4 can be a metal shell made of alloy steel, alloy aluminum, etc., or a composite material shell made of metal and polypropylene, etc.

[0074] Please see Figure 4 In some embodiments, the battery cell 3 includes a housing 31 and an electrode assembly 34.

[0075] The outer casing 31 is a component used to form the internal environment of the battery cell 3. The internal environment formed by the casing can be used to house the electrode assembly 34, as well as the electrolyte and other components. Optionally, the outer casing 31 can be, but is not limited to, made of metallic or non-metallic materials. For example, metallic materials can be copper, aluminum, or stainless steel; non-metallic materials can be polyethylene, polypropylene, or polyvinyl chloride.

[0076] For example, the outer shell 31 can be a steel shell, an aluminum shell, a plastic shell (such as a polypropylene shell), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0077] In some embodiments, the housing 31 can be a sealed structure or a non-sealed structure. As an example, when the housing 31 is a non-sealed structure, the housing 31 serves to protect the electrode assembly 34.

[0078] In some embodiments, the housing 31 may include a housing 33 and an end cap 32. The housing 33 has an internal receiving space for accommodating the electrode assembly 34. The housing 33 has an opening, and the end cap 32 is connected to the housing 33 to seal the opening. The housing 33 may have one or more openings. The end cap 32 may also have one or more.

[0079] The shell 33 can be of various shapes, such as a cuboid or prism structure. Similarly, the end cap 32 can have various structures; for example, it can be a plate-like structure or a hollow structure open at one end. For instance, in... Figure 4 In the middle, the shell 33 has a cuboid structure, and the end cap 32 has a plate-like structure.

[0080] Electrode assembly 34 is a component in the battery cell 3 where an electrochemical reaction occurs, and the housing 33 may contain one or more electrode assemblies 34.

[0081] In some embodiments, the electrode assembly 34 may be cylindrical, flat, or polygonal in shape.

[0082] The electrode assembly 34 can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0083] The electrode assembly 34 includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the negative and positive electrodes. During the charging and discharging process of the battery cell 3, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, serves to prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0084] Please refer to the following: Figures 3 to 16According to an embodiment of this application, a battery device 100 is provided, including a power distribution mechanism 2. The power distribution mechanism 2 includes a power distribution box 21 and a fixing assembly 1. The power distribution box 21 has a receiving cavity 201 and includes a first wall 211. The first wall 211 is disposed on one side of the receiving cavity 201 along a first direction X and has a mounting hole 202 communicating with the receiving cavity 201. The fixing assembly 1 includes a fixing member 10, a first connecting member 20, and a second connecting member 30. The fixing member 10 is disposed on the side of the first wall 211 facing the receiving cavity 201 along the first direction X. The fixing member 10 has a first connecting hole 101 and a second connecting hole 102. The first connecting hole 101 communicates with the mounting hole 202 and the receiving cavity 201. The first connector 20 passes through the first connecting hole 101 and the mounting hole 202. The two ends of the first connector 20 are respectively sealed to the fixing member 10 and the first wall 211. Along the first direction X, the fixing member 10 has a first surface 110 and a first mounting surface 120 on the side facing the first wall 211. The first mounting surface 120 protrudes from the first surface 110 on the side away from the first wall 211. The first surface 110 is connected to the first mounting surface 120. There is a gap 103 between the first mounting surface 120 and the first wall 211 along the first direction X. The second connecting hole 102 communicates with the gap 103 and the receiving cavity 201. The second connector 30 passes through the second connecting hole 102, and part of the second connector 30 is disposed in the gap 103.

[0085] In the embodiments of this application, the first direction X refers to the direction from the first wall 211 to the receiving cavity 201. The first wall 211 surrounds one side of the receiving cavity 201 along the first direction X. Alternatively, the first direction X can also be understood as the thickness direction of the first wall 211.

[0086] The power distribution mechanism 2 is used to electrically connect with the battery cell 3 and external equipment to realize the power distribution and transmission between the battery cell 3 and the external equipment, so that the battery cell 3 can stably and efficiently supply power to the external equipment.

[0087] The power distribution mechanism 2 can be connected to the battery housing 4 to make the connection between the two more secure, thereby improving the stability of the power distribution mechanism 2 and thus improving the stability of the battery device 100. Optionally, the power distribution mechanism 2 can be located inside the cavity of the battery housing 4, or outside the battery housing 4, or partly inside the cavity of the battery housing 4 and partly outside the battery housing 4.

[0088] The power distribution mechanism 2 includes a power distribution box 21 and a fixing component 1. The power distribution box 21 has a receiving cavity 201, which can be used to accommodate electrical components such as circuit breakers, busbars, and fuses. The electrical components in the receiving cavity 201 can be electrically connected to the battery cell 3. The power distribution box 21 can protect them. The fixing component 1 is used to fix the electrical components located in the receiving cavity 201.

[0089] The fixing component 1 is connected to the distribution box 21. The fixing component 1 can be connected to the first wall 211 of the distribution box 21. Specifically, the fixing component 1 can be connected to the first wall 211 through the first connector 20, or it can be welded, bonded or detachably connected to the first wall 211 through fastening components.

[0090] like Figure 5 As shown, the fixing assembly 1 includes a fixing member 10, a first connecting member 20, and a second connecting member 30. The fixing member 10 is disposed on the side of the first wall 211 facing the receiving cavity 201 along the first direction X. The first connecting member 20 and the second connecting member 30 are both connected to the fixing member 10, and the first connecting member 20 is also connected to the first wall 211, so that the fixing member 10 can serve as a transition member connecting the first wall 211 with the first connecting member 20 and the second connecting member 30. During the operation of the battery device 100, the fixing member 10 can support the first connecting member 20. The load transmitted by the first connector 20 and the second connector 30 is distributed to the first wall 211 of the distribution box 21, which helps to improve the reliability and service life of the distribution box 21. At the same time, the fastener 10 can also bear the load transmitted from the first wall 211, and distribute the load to the first connector 20 and the second connector 30, which helps to improve the reliability and service life of the first connector 20 and the second connector 30. This makes the structure connected to the first connector 20 and the second connector 30 in the cavity 201 more stable and less prone to shaking.

[0091] The first connector 20 is configured to guide the cable, and serves to secure, seal, and allow the cable to pass through. Figures 6 to 8 As shown, the first wall 211 has a mounting hole 202 and the fastener 10 has a first connecting hole 101. The mounting hole 202 and the first connecting hole 101 are connected and connected to each other, so that the first connecting member 20 can pass through to seal the mounting hole 202 and the first connecting hole 101, which can effectively reduce the probability of external water vapor, particles and other impurities entering the receiving cavity 201.

[0092] Optionally, the first connector 20 may have a through hole, through which external cables can enter the receiving cavity 201 of the distribution box 21. Optionally, the first connector 20 may be used to insert cables connected to the battery cell 3, or it may also be used to insert cables connected to an external load.

[0093] Optionally, the axial direction of the mounting hole 202 is the same as the axial direction of the first connecting hole 101, which facilitates the installation and positioning of both. Optionally, the axial direction of the mounting hole 202 is the first direction X, and the axial direction of the first connecting hole 101 is the first direction X. Optionally, the axial directions of the mounting hole 202, the first connecting hole 101, and the through hole of the first connector 20 are all set to be the same.

[0094] like Figure 9 and Figure 10 As shown, the fastener 10 also has a second connecting hole 102. The side surface of the fastener 10 facing the first wall 211 along the first direction X includes a first surface 110 and a first mounting surface 120. That is, the side surface of the fastener 10 facing the first wall 211 along the first direction X has a stepped structure. There is a gap 103 between the first mounting surface 120 and the first wall 211 along the first direction. The second connecting hole 102 connects the gap 103 and the receiving cavity 201. The second connecting member 30 passes through the second connecting hole 102 and is connected to the fastener 10, and part of the second connecting member 30 is disposed in the gap 103. In other words, a gap 103 is formed between the fixing member 10 and the first wall 211 in the first direction X. After the second connecting member 30 is assembled with the fixing member 10, the gap 103 can accommodate a part of the second connecting member 30. By setting it in this way, the possibility of interference with the first wall 211 due to the assembly of the second connecting member 30 can be reduced, thereby reducing the problems of scratches, dents, deformation or even damage to the second connecting member 30 and the first wall 211. This is conducive to improving the integrity of the first wall 211 and the reliability of the second connecting member 30, and further conducive to improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0095] Furthermore, by configuring the second connector 30 to pass through the second connection hole 102 and have a structure partially disposed within the gap 103, it is beneficial to improve the connection strength between it and the fastener 10, as well as to improve the compactness of the fastening assembly 1 and reduce the space occupied by the fastening assembly 1 in the distribution box 21.

[0096] Specifically, the first connector 20 and the second connector 30 both serve a fastening function and are used to fix other structures located in the receiving cavity 201. They also serve as the first and second connection positions of the same structure in the receiving cavity 201, respectively, thereby increasing the number of connection positions of the structures located in the receiving cavity 201 and thus improving their connection stability.

[0097] In related technologies, electrical components and other structures inside the distribution box are connected to the wall of the distribution box via glands. When cables are pulled or the distribution box vibrates, the electrical components are prone to shaking, and the wall of the distribution box is also prone to deformation.

[0098] Unlike other applications, this one uses a fixing component 1 on the first wall 211 of the distribution box 21. The fixing component 1 includes a fixing member 10, a first connecting member 20, and a second connecting member 30. Both the first connecting member 20 and the second connecting member 30 are connected to the fixing member 10, and the first connecting member 20 is also connected to the first wall 211. This allows electrical components and other parts located in the receiving cavity 201 to be fixed to the fixing member 10 via the first connecting member 20 and the second connecting member 30, thereby securing them within the distribution box 21 and improving its stability. This is beneficial to improving the reliability of the power distribution mechanism 2 and the battery device 100. Specifically, the fixing member 10 can bear the cable tension or vibration load transmitted from the first connecting member 20 and the load transmitted from the second connecting member 30, so as to share the stress of the first wall 211 of the power distribution box 21. The fixing member 10 can also bear the vibration from the power distribution box 21, so as to reduce the vibration force on the first connecting member 20 and the second connecting member 30, thereby improving the stability of the first connecting member 20 and the second connecting member 30 and the structural strength of the power distribution box 21.

[0099] Optionally, the fastener 10 is a plate-like structure and is attached to the first wall 211.

[0100] Optionally, there may be one or multiple fasteners 10.

[0101] Optionally, the fastener 10 may have one first connecting hole 101 or multiple first connecting holes 101; alternatively, the fastener 10 may have one second connecting hole 102 or multiple second connecting holes 102.

[0102] Optionally, the fastener 10 may include one first connector 20 or multiple first connectors 20; alternatively, the fastener 10 may include one second connector 30 or multiple second connectors 30.

[0103] Optionally, the first connector 20 can be a gland head. One end of the first connector 20 along the first direction X can extend out of the mounting hole 202 and be connected to the side surface of the first wall 211 opposite to the receiving cavity 201. The other end of the first connector 20 along the first direction X can extend out of the first connection hole 101 and be connected to the side surface of the fixing member 10 opposite to the first wall 211.

[0104] Optionally, the second connector 30 may include, but is not limited to, bolts, screws, studs, etc. In some embodiments, the second connector 30 is connected to the fixing member 10, and the connection between the two can be by threaded engagement, riveting, clamping, etc.

[0105] Please see Figure 5In some embodiments, the fixing component 1 further includes an insulating base 40, which is disposed on the side of the fixing member 10 away from the first wall 211 along the first direction X. The insulating base 40 is connected to the first connector 20 and the second connector 30 respectively.

[0106] An insulating base 40 is disposed in the receiving cavity 201. The insulating base 40 is configured to fix electrical components disposed in the receiving cavity 201 and to provide a connection channel for electrical components and cables. That is, the insulating base 40 can be used to install and fix electrical components within the distribution box 21. The insulating base 40 can also provide a connection channel for electrical components and cables introduced through the first connector 20, so that the electrical components and cables can be electrically connected. Optionally, the insulating base 40 has a connection channel communicating with the through hole of the first connector 20. Electrical components fixed to the insulating base 40 can be electrically connected to cables passing through the through hole through the connection channel.

[0107] The insulating base 40 is made of insulating material to reduce the possibility of electrical connections between electrical components and the insulating base 40 or the distribution box 21. One end of the insulating base 40 can be mated with the first connector 20 to conduct cables, and the other end of the insulating base 40 can be used to fix electrical components installed inside the distribution box 21. It should be noted that the insulating base 40 can isolate the second connector 30 from the electrical components installed on the insulating base 40.

[0108] The first connector 20 can serve as the first connection position of the insulating base 40, and the second connector 30 can serve as the second connection position of the insulating base 40. The second connector 30 can work with the first connector 20 to lock the insulating base 40, thereby reducing the possibility of the insulating base 40 becoming loose or even displaced. This helps to improve the stability of electrical components and cables. Furthermore, when assembling the insulating base 40, the second connector 30 can also provide a positioning function for the insulating base 40, so that it can be quickly aligned with the first connector 20, which helps to improve the efficiency and accuracy of installing the insulating base 40.

[0109] The battery device 100 provided in some embodiments of this application has an insulating base 40 provided in the receiving cavity 201 of the power distribution box 21. The insulating base 40 can be connected to the first connector 20 and the second connector 30 respectively. This can effectively reduce the probability of the insulating base 40 shaking or displacing, which is beneficial to improving the stability of the insulating base 40, thereby improving the stability of the cables and electrical components. This is beneficial to improving the stability of the electrical connection between the power distribution mechanism 2 and the battery device 100, and further beneficial to improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0110] Optionally, the first connector 20 and the second connector 30 are spaced apart to facilitate their assembly with the insulating base 40 and to improve the stability of the assembly with the insulating base 40.

[0111] Optionally, the insulating base 40 includes a main body and a mating part that are connected to each other. The main body is connected to the first connector 20, and the mating part is connected to the second connector 30. The mating part is located on the periphery of the main body to reduce the possibility of interference between the two during assembly.

[0112] Optionally, the insulating base 40 may have one mating part or multiple mating parts, with each mating part corresponding to a second connector 30.

[0113] As an example, the insulating base 40 is provided with two mating parts. In the same projection plane perpendicular to the first direction X, the orthographic projections of the two second connecting parts 30 surround the orthographic projection of the first connecting hole 101. It can also be understood that the orthographic projections of the two mating parts surround the orthographic projection of the first connecting part 20, so that the middle part of the insulating base 40 can be locked with the first connecting part 20, and the outer periphery of the insulating base 40 can be locked with the second connecting part 30, which is beneficial to improve the stability of the insulating base 40.

[0114] Optionally, the insulating base 40 and the first connecting member 20 are detachably connected, facilitating maintenance or replacement of the insulating base 40. Optionally, the connection method between the insulating base 40 and the first connecting member 20 may include, but is not limited to, socketing, threaded engagement, or abutment fixing.

[0115] Optionally, the insulating base 40 and the second connector 30 are detachably connected to facilitate maintenance or replacement of the insulating base 40. Optionally, the connection method between the insulating base 40 and the second connector 30 may include, but is not limited to, sleeve connection, threaded engagement, or abutment fixing.

[0116] In related technologies, the insulating base used to fix electrical components is connected to the distribution box only through a gland. When the cable is pulled or the distribution box vibrates, the insulating base is prone to shaking, and the wall of the distribution box is also prone to deformation.

[0117] Unlike other applications, this application, in its embodiment, by setting a fixing component 1 on the first wall 211 of the distribution box 21 and setting the insulating base 40 to be connected to the first connector 20 and the second connector 30, can effectively reduce the probability of the insulating base 40 shaking or displacing, which is beneficial to improving the stability of the insulating base 40, thereby improving the stability of the cables and electrical components, which in turn is beneficial to improving the stability of the electrical connection between the power distribution mechanism 2 and the battery device 100, and thus beneficial to improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0118] Furthermore, by setting the fixing member 10 and connecting the first connector 20 to the fixing member 10 and the first wall 211 of the distribution box 21, when the cable in the first connector 20 pulls on the first connector 20, the fixing member 10 can share the stress on the first wall 211, thereby reducing the possibility of deformation of the first wall 211 or the mounting hole 202. This is beneficial to improving the structural strength of the first wall 211 and the sealing performance of the first connector 20, which in turn helps to improve the reliability of the power distribution mechanism 2 and the battery device 100. Moreover, when the distribution box 21 is subjected to vibration or installation, the fixing member 10 can also share the stress on the first connector 20, the second connector 30 and the insulating base 40, thereby reducing the risk of shaking or breakage of the first connector 20, the second connector 30 and the insulating base 40. This is beneficial to improving the overall stability of the fixing assembly 1, which in turn helps to improve the reliability of the power distribution mechanism 2 and the battery device 100.

[0119] Please see Figures 5 to 10 In some embodiments, the second connector 30 protrudes from the fixing member 10 away from the first wall 211 along the first direction X.

[0120] In other words, the second connector 30 has a portion protruding from the fixing member 10 along the first direction X toward the side opposite to the first wall 211. Other structures within the distribution box 21 (e.g., the insulating base 40) can be connected to the portion of the second connector 30 protruding from the fixing member 10, for example, as... Figure 9 , Figure 13 and Figure 14 As shown, along the first direction X, the second connector 30 has a top end 301 and a bottom end 302 facing opposite directions. The bottom end 302 is located within the gap 103, and the top end 301 is located on the side of the fixing member 10 facing away from the first wall 211 along the first direction X. By setting it in the above manner, it is convenient for the second connector 30 to be assembled with other structures (such as the insulating base 40) in the distribution box 21, which helps to improve assembly efficiency and reduce assembly difficulty.

[0121] In some embodiments, the second connector 30 has a first portion protruding from the fixing member 10 along a first direction X. The first portion is located on the side of the fixing member 10 away from the first wall 211. The first portion has a top end 301, and an insulating base 40 is connected to the first portion.

[0122] In some embodiments, the second connector 30 further has a second portion disposed in the second connection hole 102, and the second portion is connected to the side of the first portion facing the first wall 211 along the first direction X. The second portion may be clearance-fitted with the second connection hole 102, or the second portion may be sealingly fitted with the second connection hole 102.

[0123] In some embodiments, the second connector 30 further has a third portion protruding from the fastener 10. Along the first direction X, the first portion is located on the side of the fastener 10 facing the first wall 211, and the second portion is connected between the first portion and the third portion. The third portion has a bottom end 302. The third portion can be clearance-fitted with the first mounting surface 120 of the fastener 10, or the third portion can also be connected to the first mounting surface 120.

[0124] In some embodiments, the second connecting hole 102 and the first connecting hole 101 are spaced apart, that is, they are respectively opened at different positions on the fastener 10. This helps to reduce the impact on the structural strength of the fastener 10 and facilitates the assembly of the first connecting member 20 and the second connecting member 30, thereby reducing the possibility of them interfering with the assembly due to sharing the same hole position. On this basis, the first connecting member 20 and the second connecting member 30 can be installed and positioned with the fastener 10 through the first connecting hole 101 and the second connecting hole 102 respectively. The insulating base 40 is then fixed with the fastener 10 through the first connecting member 20 and the second connecting member 30, which helps to improve assembly efficiency and reduce operation difficulty.

[0125] When assembling the fixing component 1, the second connector 30 can be installed on the fixing component 10 first, then the whole assembly can be installed on the first wall 211, then the first connector 20 can be connected to the first wall 211 and the fixing component 10, and finally the insulating base 40 can be assembled, which facilitates the assembly of the fixing component 1.

[0126] In some embodiments, the second connector 30 is threaded into the second connecting hole 102.

[0127] The portion of the second connector 30 located within the second connecting hole 102 is threaded into the second connecting hole 102, enabling the second connector 30 to be connected and locked to the fixing member 10. This improves the stability of the connection between the insulating base 40 and the fixing member 10 via the second connector 30, reduces relative friction or abnormal noise between the second connector 30 and the second connecting hole 102, and extends the service life of the fixing component 1. Furthermore, with the above-mentioned configuration, when the cable is pulled or vibrates, the tension or torque on the insulating base 40 can be transmitted to the fixing member 10 through the second connector 30, effectively reducing the probability of displacement or detachment of the second connector 30 during long-term use. This improves the stability of the insulating base 40, making the electrical components within the distribution box 21 more stable, and consequently improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0128] Please see Figure 9 , Figure 13 and Figure 14In some embodiments, the second connector 30 has a limiting end 310 at one end along the first direction X, and the limiting end 310 abuts against the first assembly surface 120.

[0129] The limiting end 310 located within the gap 103 can abut against the side surface of the fixing member 10 facing the first wall 211 to limit the second connector 30 along the first direction X, reducing the possibility of the second connector 30 coming off the side of the second connection hole 102 facing the first wall 211. Furthermore, by setting it in the above manner, when the cable is pulled or vibrates, the tension or torque on the insulating base 40 can be transmitted to the fixing member 10 through the second connector 30, which can effectively reduce the probability of the second connector 30 shifting or falling off during long-term use, thereby improving the stability of the insulating base 40, making the electrical components in the distribution box 21 more stable, and thus improving the reliability of the power distribution mechanism 2 and the battery device 100. In addition, by setting the limiting end 310, it is also beneficial to improve the uniformity of the distribution of the connection load.

[0130] The fixing component 1 provided in some embodiments of this application can improve the connection strength between the second connector 30 and the fixing component 10 by means of threaded engagement. It can also limit the second connector 30 along the first direction X by the limiting end 310, so as to improve the reliability of the connection between the second connector 30 and the fixing component 10. This is beneficial to improving the reliability of the connection between the insulating base 40 and the fixing component 10, thereby improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0131] Optionally, in the same projection plane perpendicular to the first direction X, the orthographic projection of the limiting end 310 covers the orthographic projection of the outer contour of the second connecting hole 102. That is, the limiting end 310 blocks the second connecting hole 102 along the first direction X, which helps to reduce the possibility of external moisture, dust and other impurities entering the second connecting hole 102 and causing contamination of components such as the second connector 30. At the same time, it can also improve the limiting effect on the second connector 30 along the first direction X, which helps to further reduce the probability of the second connector 30 detaching from the fixing member 10 along the first direction X toward the insulating base 40. This helps to improve the service life and reliability of the fixing component 1, and thus helps to better improve the reliability of the power distribution mechanism 2 and the battery device 100.

[0132] like Figure 10 As shown, in some embodiments, the fastener 10 is provided with a plurality of first connecting holes 101, and the first connector 20 is provided in a one-to-one correspondence with the first connecting holes 101.

[0133] In other words, the fastener 10 is provided with a plurality of first connecting holes 101 and a plurality of first connecting parts 20. The number of first connecting parts 20 and first connecting holes 101 are the same and they are arranged in a one-to-one manner. By setting them in this way, multiple first connecting holes 101 can be opened on the same fastener 10, which is beneficial to improving the processing efficiency of the fastening component 1, as well as the efficiency and accuracy of assembling the fastening component 1 with the first wall 211. Furthermore, it can effectively increase the connection or contact area between the fastener 10 and the first wall 211, thereby further improving the structural strength of the distribution box 21, and thus further improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0134] like Figure 10 As shown, in some embodiments, the fastener 10 is provided with a plurality of second connecting holes 102, and the second connector 30 is provided in a one-to-one correspondence with the second connecting holes 102.

[0135] In other words, the fixing member 10 is provided with multiple second connecting holes 102 and multiple second connecting members 30. The number of second connecting members 30 and second connecting holes 102 are the same and they are arranged in a one-to-one manner. By setting it in this way, multiple second connecting holes 102 can be opened on the same fixing member 10, which is beneficial to improving the processing efficiency of the fixing component 1, and also beneficial to improving the efficiency and accuracy of assembling the fixing component 1 with the first wall 211. In addition, it can also effectively increase the connection or contact area between the fixing member 10 and the first wall 211, so as to further improve the structural strength of the power distribution box 21, thereby further improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0136] Please see Figure 9 In some embodiments, the first surface 110 is attached to the first wall 211.

[0137] By setting it in this way, the end of the second connector 30 facing the first wall 211 along the first direction X will not protrude from the fixing member 10, so that the setting of the second connector 30 will not increase the space occupied by the fixing assembly 1 in the receiving cavity 201, and can also make the fixing member 10 and the first wall 211 more tightly connected, which is conducive to improving the structural strength of the power distribution mechanism 2, thereby improving the structural strength of the battery device 100.

[0138] Furthermore, by attaching the first surface 110 of the fastener 10 to the first wall 211, a surface contact can be formed between the fastener 10 and the first wall 211, thereby increasing the connection area between the two and improving the dynamic stability under vibration and shock conditions.

[0139] Please see Figure 10In some embodiments, the first connection hole 101 includes a first hole 1011 and a second hole 1012 that are connected. Along the first direction X, the first hole 1011 is located on the side of the second hole 1012 facing the first wall 211. At least one of the first hole 1011 and the second hole 1012 is sealed to the first connector 20.

[0140] The inner wall surface of the first hole 1011 can be sealed to the outer peripheral surface of the first connector 20, or the inner wall surface of the second hole 1012 can be sealed to the outer peripheral surface of the first connector 20, or both the inner wall surfaces of the first hole 1011 and the second hole 1012 can be sealed to the outer peripheral surface of the first connector 20. In this way, the possibility of external moisture, dust and other debris entering the receiving cavity 201 of the distribution box 21 through the first connection hole 101 can be effectively reduced. This is beneficial to improving the service life of electrical components and other parts in the distribution box 21, thereby improving the reliability of the power distribution mechanism 2 and the battery device 100, and also improving the flexibility and diversity of processing the first connection hole 101.

[0141] In some embodiments, the first hole 1011 is sealed to the first connector 20, and the second hole 1012 is clearance-fitted to the first connector 20.

[0142] In some embodiments, both the first hole 1011 and the second hole 1012 are sealed to the first connector 20.

[0143] Optionally, the first hole 1011 and the second hole 1012 can be manufactured as a single piece, or they can be processed separately.

[0144] In some embodiments, the inner wall profile of at least one of the first hole 1011 and the second hole 1012 is the same as the outer peripheral profile shape of the first connector 20.

[0145] By setting it in the above manner, the inner walls of the first hole 1011 and / or the second hole 1012 can fit better with the outer wall of the first connector 20, reducing the gap between them. This helps to further improve the tightness of the sealing fit between the first connector 20 and the first connecting hole 101, reducing the possibility of external moisture and other impurities entering the receiving cavity 201 through the first connecting hole 101. This also helps to improve the sealing performance of the distribution box 21, thereby improving the reliability of the battery device 100. Furthermore, the matching structure with the same shape can simplify the assembly process, reduce the probability of installation misalignment, and improve assembly efficiency and accuracy.

[0146] Optionally, the inner wall contours of the first hole 1011 and the second hole 1012 are the same as the outer peripheral contour shape of the first connector 20.

[0147] Optionally, the inner wall profile of the second hole 1012 is the same as the outer peripheral profile shape of the first connector 20.

[0148] like Figure 10 As shown, in some embodiments, in a projection plane perpendicular to the first direction X, the projection outline of the second hole 1012 surrounds the projection outline of the first hole 1011.

[0149] In other words, the radial dimension of the second hole 1012 is larger than that of the first hole 1011, so that a stepped surface 104 can be formed between the inner wall of the first hole 1011 and the inner wall of the second hole 1012. This stepped surface 104 can be adapted to the stepped structure of the first connector 20 itself, so that the first connector 20 can be partially supported on the stepped surface 104. This allows the first connector 20 to be pre-installed and positioned through the second hole 1012, and the first connector 20 to be locked through the first hole 1011. Furthermore, by setting it in the above manner, the distance between the end of the first connector 20 facing the insulating base 40 in the first direction X and the side surface of the fixing member 10 facing the insulating base 40 in the first direction X can be reduced, thereby reducing the space occupied by the fixing assembly 1 in the first direction X, and making the connection between the insulating base 40 and the fixing member 10 more compact.

[0150] In some embodiments, in a projection plane perpendicular to the first direction X, the projection outline of the second hole 1012 partially overlaps with the projection outline of the first hole 1011.

[0151] In other words, the projected contour line of the second hole 1012 along the first direction X can completely overlap with the projected contour line of the first hole 1011 along the first direction X, meaning that the radial dimensions and shapes of the first hole 1011 and the second hole 1012 are exactly the same, which facilitates processing and improves production efficiency. Alternatively, the projected contour line of the second hole 1012 along the first direction X can also partially overlap with the projected contour line of the first hole 1011 along the first direction X, requiring only that the first hole 1011 and the second hole 1012 be connected.

[0152] In some embodiments of this application, the projection outline of the second hole 1012 in the first direction X can surround the projection outline of the first hole 1011 in the first direction X, and the projection outlines of the two in the first direction X can also partially overlap, which is beneficial to improving the flexibility and diversity of processing the first connecting hole 101.

[0153] like Figure 10 As shown, in some embodiments, a stepped surface 104 is formed between the inner wall of the first hole 1011 and the inner wall of the second hole 1012, and a portion of the first connector 20 is supported on the stepped surface 104.

[0154] In other words, the first connector 20 is partially supported on the step surface 104 along the first direction X, so that the step surface 104 can form a limit for the first connector 20 along the first direction X, which helps to reduce the probability of the first connector 20 being displaced along the first direction X, thereby improving the stability of the connection between the insulating base 40 and the first connector 20, and thus helping to improve the reliability of the power distribution mechanism 2 and the battery device 100.

[0155] Furthermore, by setting it in the above manner, the size of the first connector 20 protruding from the fixing member 10 at the end facing the insulating base 40 along the first direction X can be reduced, thereby reducing the space occupied by the fixing component 1 in the first direction X, and making the connection between the insulating base 40 and the fixing component 1 more compact.

[0156] Optionally, the fastener 10 is a plate structure. This arrangement helps to increase the connection area between the fastener 10 and the first wall 211, thereby improving the connection stability between the two and reducing their stability under vibration conditions.

[0157] Optionally, the fastener 10 can be a one-piece molded structure, or the fastener 10 can be formed by assembling multiple parts.

[0158] In some embodiments, the fastener 10 includes a plurality of plates arranged along a first direction X, the plurality of plates being provided separately and assembled to form the fastener 10. Optionally, the overall thickness of the plurality of plates in the first direction X is between 3 mm and 8 mm. Further, the overall thickness of the plurality of plates in the first direction X is between 1.5 mm and 5 mm.

[0159] Please see Figures 9 to 12 In some embodiments, the fastener 10 includes a first plate 11 and a second plate 12 arranged along a first direction X. Along the first direction X, the first plate 11 is disposed on the side of the second plate 12 facing the first wall 211. The first plate 11 has a first hole 1011, the second plate 12 has a second hole 1012, and the second plate 12 has a second connecting hole 102. Along the first direction X, the side of the first plate 11 facing the first wall 211 has a first surface 110, and the side of the second plate 12 facing the first wall 211 has a first mounting surface 120.

[0160] The second plate 12 is closer to the insulating base 40 along the first direction X than the first plate 11. The second plate 12 can bear the tensile and torsional forces transmitted by the insulating base 40 through the second connector 30. The first plate 11 is closer to the first wall 211 along the first direction X than the second plate 12. The first plate 11 can bear the clamping force between the first connector 20 and the first wall 211. The first plate 11 and the second plate 12 can jointly distribute the load, which is beneficial to improving the overall structural strength of the fixing assembly 1, thereby improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0161] In some embodiments of this application, the battery device 100 with a fastener 10 can be assembled from independently processed first plates 11 and second plates 12 to form a double-layer plate structure. This helps to reduce production costs and increase the diversity of the fastener 10. Furthermore, the first hole 1011 and the second hole 1012 can be processed separately from the first plate 11 and the second plate 12, which helps to reduce the processing difficulty of opening holes in the fastener 10 and also facilitates the improvement of the processing accuracy and efficiency of the first hole 1011 and the second hole 1012, thereby improving the quality of the fastener 10.

[0162] Optionally, the first plate 11 and the second plate 12 can be made of the same material. Of course, they can also be made of different materials to balance structural strength and material cost.

[0163] Optionally, the first plate 11 and the second plate 12 are detachably connected. The detachable connection method may include, but is not limited to, bolt connection, snap-fit ​​connection, or interference fit. This design allows for replacement of the damaged component when either the first plate 11 or the second plate 12 is damaged, without needing to replace the entire fastener 10, thus saving costs. Optionally, the first plate 11 and the second plate 12 can also be connected by welding or bonding.

[0164] Optionally, the first plate 11 is attached to the first wall 211, which can reduce the gap between them and make the fixing component 1 more tightly connected to the first wall 211. This is beneficial to improving the structural strength of the power distribution mechanism 2, thereby improving the structural strength of the battery device 100.

[0165] When the fastener 10 includes a first plate 11 and a second plate 12 arranged along the first direction X, the first plate 11 may be provided with a through hole that communicates with the second plate 12 along the first direction X. This through hole is disposed opposite to the first mounting surface 120 of the second plate 12 in the first direction X, so that a gap 103 is formed between the first mounting surface 120 and the first wall 211.

[0166] Please see Figure 10 In some embodiments, the fastener 10 has a first welding portion 105, through which the first plate 11 and the second plate 12 are welded.

[0167] The first welding part 105 can be a welding hole provided on the first plate 11, allowing welding tools to weld the first plate 11 and the second plate 12 through the welding hole, or, as... Figure 12 As shown, the first welding part 105 can also be a welding hole provided on the second plate 12. The first welding part 105 can also be a weld mark formed between the first plate 11 and the second plate 12 after welding.

[0168] The battery device 100 provided in some embodiments of this application, by welding the first plate 11 and the second plate 12 together, can form a stable connection structure between the first plate 11 and the second plate 12, reducing the probability of relative misalignment between them during long-term use, which is beneficial to improving the connection strength between the first plate 11 and the second plate 12. In addition, it is also beneficial to improve the assembly efficiency of the first plate 11 and the second plate 12, reduce the assembly process, simplify the structure of the fastener 10, and reduce the overall weight of the fastener 10. Furthermore, the welded connection structure can also improve the sealing performance of the connection position between the first plate 11 and the second plate 12, which is beneficial to extending the service life of the fastener 10.

[0169] Optionally, the fastener 10 has a plurality of spaced first welding portions 105, which are spaced apart from the first connecting hole 101 and the second connecting hole 102 on the fastener 10.

[0170] Please see Figure 9 In some embodiments, the thickness of the first plate 11 along the first direction X is L1, where 1.5mm ≤ L1 ≤ 5mm.

[0171] The thickness L1 of the first plate 11 refers to the maximum dimension of the first plate 11 in the first direction X. As an example, the value of L1 may include, but is not limited to, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.3mm, 3.6mm, 3.7mm, 4mm, 4.5mm, 5mm, etc.

[0172] If the value of L1 is set too small, i.e., L1 < 1.5 mm, the first plate 11 will be too thin and the rigidity of the first plate 11 will be insufficient. It will be easy to deform when setting the first hole 1011 and assembling the first connecting part 20. If the value of L1 is set too large, i.e., L1 > 5 mm, the first plate 11 will be too thick, increasing the overall space occupied by the fastener 10.

[0173] Therefore, by setting the value of L1 between 1.5mm and 5mm, including the two endpoint values ​​of 1.5mm and 5mm, it is possible to simultaneously take into account the structural strength of the first plate 11 and the overall space occupied by the fastener 10, which is beneficial to improving the structural strength and space utilization of the fastener 1, and thus to improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0174] Please see Figure 9 In some embodiments, the thickness of the second plate 12 along the first direction X is L2, where 1.5mm ≤ L2 ≤ 4mm.

[0175] The thickness L1 of the second plate 12 refers to the maximum dimension of the second plate 12 in the first direction X. As an example, the value of L2 can include, but is not limited to, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.3mm, 3.6mm, 3.7mm, 4mm, etc.

[0176] If the value of L2 is set too small, i.e., L2 < 1.5 mm, the second plate 12 will be too thin and the rigidity of the second plate 12 will be insufficient. It will be easy to deform when setting the second hole 1012 and assembling the second connector 30 or the first connector 20. If the value of L2 is set too large, i.e., L2 > 4 mm, the second plate 12 will be too thick, increasing the overall space occupied by the fastener 10.

[0177] Therefore, by setting the value of L2 between 1.5mm and 4mm, including the two endpoint values ​​of 1.5mm and 4mm, it is possible to simultaneously consider the structural strength of the second plate 12 and the overall space occupied by the fastener 10, which is beneficial to improving the structural strength and space utilization of the fastening component 1, and thus to improving the reliability of the power distribution mechanism 2 and the battery device 100.

[0178] In some embodiments, 2mm≤L1≤3mm. By further setting the value of L1 between 2mm and 3mm, including the two endpoint values ​​of 2mm and 3mm, the structural strength of the first plate 11 and the overall space occupied by the fastener 10 can be better balanced, thereby reducing the overall area occupied by the fastener 10 while satisfying the structural strength of the first plate 11.

[0179] In some embodiments, 2mm≤L2≤3mm. By further setting the value of L2 between 2mm and 3mm, including the two endpoint values ​​of 2mm and 3mm, the structural strength of the second plate 12 and the overall space occupied by the fastener 10 can be better balanced, thereby reducing the overall area occupied by the fastener 10 while satisfying the structural strength of the second plate 12.

[0180] Please see Figures 13 to 16In some embodiments, the fastener 10 is a one-piece molded structure. That is, the fastener 10 is a one-piece structure. This configuration is beneficial to improving the processing efficiency of the fastener 10, thereby improving the production efficiency of the fastening assembly 1, which in turn improves the production efficiency of the power distribution mechanism 2 and the battery device 100. Furthermore, it also helps to improve the structural strength of the fastener 10, thereby improving the structural strength of the power distribution mechanism 2 and the battery device 100.

[0181] like Figure 13 and Figure 14 As shown, when the fastener 10 is an integrally formed structure, the fastener 10 may have a recess on the side facing the first wall 211 along the first direction X. The bottom wall of the recess is the first mounting surface 120, so that the first mounting surface 120 and the first wall 211 can form a gap 103 in the first direction X.

[0182] like Figure 13 As shown, in some embodiments, the thickness of the fastener 10 along the first direction X is L, where 1.5mm ≤ L ≤ 5mm.

[0183] "Thickness of fastener 10 along the first direction X" refers to the maximum dimension of fastener 10 in the first direction X, such as... Figure 13 As shown, the thickness of the fastener 10 can be the distance between the first surface 110 and the second surface 130 in the first direction X, such as... Figure 14 As shown, the thickness of the fastener 10 can be the distance between the first surface 110 and the second mounting surface 140 in the first direction X.

[0184] When the fastener 10 is a one-piece molded structure, the fastener 10 can be a single plate, such as... Figure 13 As shown, the fastener 10 can be a plate with a recess on one side facing the first wall 211 along the first direction X, or, as... Figure 14 As shown, the fastener 10 can be a plate with a recess on one side facing the first wall 211 along the first direction X and a protrusion on one side away from the first wall 211 along the first direction X.

[0185] As an example, the value of L can be, but is not limited to, 1.5mm, 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.3mm, 3.6mm, 3.7mm, 4mm, 4.5mm, 5mm, etc. By setting the value of L between 1.5mm and 5mm, including the two endpoint values ​​of 1.5mm and 5mm, the fastener 10 can have sufficient structural strength to improve the structural strength of the power distribution mechanism 2 and the battery device 100. At the same time, the overall thickness of the fastener 10 can be set within a suitable range to improve the structural compactness of the power distribution mechanism 2 and the battery device 100.

[0186] In some embodiments, 2mm ≤ L ≤ 3mm.

[0187] By further setting the value of L between 2mm and 3mm, including the two endpoint values ​​of 2mm and 3mm, it is beneficial to reduce the overall area occupied by the fastener 10 while satisfying the structural strength of the fastener 10.

[0188] Please see Figures 13 to 16 In some embodiments, along the first direction X, the fastener 10 has a second surface 130 and a second mounting surface 140 on the side opposite to the first wall 211. The second surface 130 is connected to the second mounting surface 140. In a projection plane perpendicular to the first direction X, the orthographic projection of the first surface 110 and the orthographic projection of the second surface 130 at least partially overlap, and the orthographic projection of the first mounting surface 120 and the orthographic projection of the second mounting surface 140 at least partially overlap. The second connecting hole 102 passes through the first mounting surface 120 and the second mounting surface 140. Along the first direction X, the distance between the first mounting surface 120 and the second mounting surface 140 is less than or equal to the distance between the first surface 110 and the second surface 130.

[0189] The fastener 10 has a second surface 130 and a second mounting surface 140 on its side facing away from the first wall 211 along the first direction X. The first surface 110 and the second surface 130 are disposed opposite each other in the first direction X, and the first mounting surface 120 and the second mounting surface 140 are disposed opposite each other in the first direction X. Optionally, the orthographic projection of the first surface 110 along the first direction X and the orthographic projection of the second surface 130 along the first direction X can partially overlap or completely overlap, and the orthographic projection of the first mounting surface 120 along the first direction X and the orthographic projection of the second mounting surface 140 along the first direction X can partially overlap or completely overlap. like Figure 13 As shown, the "distance between the first mounting surface 120 and the second mounting surface 140 along the first direction X" can be represented by L3, and the "distance between the first surface 110 and the second surface 130 along the first direction X" can be represented by L. Figure 9 In this configuration, L3≤L, this setting helps to improve the structural compactness of the fastener 10 and also improves the effectiveness of having a sufficient gap 103 between the first mounting surface 120 and the first wall 211 along the first direction X to accommodate part of the second connector 30. Furthermore, by setting the distance between the first mounting surface 120 and the second mounting surface 140 to be equal to or less than the distance between the first surface 110 and the second surface 130, it is beneficial to improve the flexibility of processing.

[0190] like Figure 13 As shown, in some embodiments, the second surface 130 and the second assembly surface 140 are located in the same plane.

[0191] In other words, the surface of the fastener 10 facing away from the first wall 211 along the first direction X is a flat surface, and the surface of the fastener 10 facing the first wall 211 along the first direction X is a stepped surface with steps. By setting it in this way, the weight of the fastener 10 and the space occupied in the first direction X can be reduced, which is conducive to reducing the weight of the fastening assembly 1 and the space occupied in the first direction X, and further conducive to reducing the weight of the power distribution mechanism 2 and the battery device 100 and improving the structural compactness of the power distribution mechanism 2 and the battery device 100.

[0192] like Figure 14 As shown, in some embodiments, along the first direction X, the second mounting surface 140 protrudes from the second surface 130 toward the side opposite to the first mounting surface 120.

[0193] In other words, the surface of the fastener 10 facing away from the first wall 211 along the first direction X is a stepped surface. This design effectively increases the size of the second connecting hole 102 along the first direction X, thereby improving the connection strength between the second connecting member 30 and the fastener 10. This further enhances the stability of the connection between the insulating base 40 and the fastener 10 through the second connecting member 30, which in turn improves the reliability of the power distribution mechanism 2 and the battery device 100. At the same time, it also reduces the adverse effects on the structural strength of the fastener 10 due to the gap 103, thus improving the service life of the fastener 10 and consequently the service life of the power distribution mechanism 2 and the battery device 100.

[0194] Optionally, the fastener 10 can be integrally injection molded or stamped on both opposite sides along the first direction, which is beneficial to improve processing efficiency and can also provide local reinforcement to the fastener 10.

[0195] like Figure 14 As shown, in some embodiments, the maximum distance between the second mounting surface 140 and the second surface 130 along the first direction is D, where 0 ≤ D ≤ 4 mm.

[0196] As an example, the value of D can include, but is not limited to, 0, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.3mm, 3.6mm, 3.7mm, 4mm, etc.

[0197] If the value of D is set too small, i.e., D < 0, the second mounting surface 140 will be recessed into the second surface 130 along the first direction X toward the first wall 211, which will shorten the size of the second connecting hole 102 in the first direction X. This will result in insufficient restraint of the second connecting hole 102 on the second connecting member 30, making the second connecting member 30 prone to tilting or shaking under vibration conditions, which in turn will make the insulating base 40 prone to tilting or shaking. On the other hand, if the value of D is set too large, i.e., D > 4 mm, this will increase the space occupied and weight of the fixing component 1 in the first direction X, and will also create a gap between the fixing member 10 and the insulating base 40 in the first direction X. This will cause the force on the insulating base 40 to be concentrated on the second mounting surface 140, making the second mounting surface 140 prone to stress concentration.

[0198] Therefore, by setting the value of D between 0 and 4 mm, including the two endpoint values ​​of 0 and 4 mm, the second connecting hole 102 can have sufficient size along the first direction X to improve the limiting effect of the second connecting hole 102 on the second connecting member 30, thereby making the insulating base 40 connected to the second connecting member 30 more stable. This is beneficial to improving the reliability of the power distribution mechanism 2 and the battery device 100. At the same time, it can also reduce the space occupied by the fixing member 10 in the receiving cavity 201 and the stress concentration phenomenon.

[0199] In some embodiments, 2.5mm ≤ D ≤ 3.5mm.

[0200] In some embodiments, 2mm ≤ D ≤ 3mm.

[0201] In some embodiments, 2mm ≤ D ≤ 3mm.

[0202] By further setting the value of D between 2mm and 3mm, including the two endpoint values ​​of 2mm and 3mm, the second connecting hole 102 can have sufficient size along the first direction X to better improve the structural strength of the fastener 10, and can also further reduce the space occupied by the fastener 10, thereby helping to better improve the reliability and space utilization of the power distribution mechanism 2 and the battery device 100.

[0203] In some embodiments, the fastener 10 is welded to the first wall 211.

[0204] By welding the fastener 10 to the first wall 211, a stable connection structure can be formed between the fastener 10 and the first wall 211, reducing the probability of relative misalignment between them during long-term use. This is beneficial to improving the connection strength between the fastener 10 and the first wall 211, and also helps to improve the assembly efficiency of the fastener 10 and the first wall 211, reduce assembly steps, simplify the structure of the power distribution mechanism 2, and reduce the overall weight of the power distribution mechanism 2 and the battery device 100. In addition, the welded connection structure can also improve the sealing performance of the connection position between the fastener 10 and the first wall 211, which is beneficial to extending the service life of the power distribution mechanism 2 and the battery device 100.

[0205] Optionally, such as Figure 16 As shown, optionally, the fastener 10 is provided with a second welding part 106, and the fastener 10 is welded to the first wall 211 through the first welding part 105.

[0206] Optionally, when the fastener 10 includes a first plate 11 and a second plate 12, both of them can be welded to the first wall 211, or the first plate 11 can be welded to the first wall 211. As an example, the first plate 11 is attached to and welded to the first wall 211, and the second plate 12 is welded to the first plate 11.

[0207] Please see Figures 5 to 8 In some embodiments, the distribution box 21 further includes a second wall 212. The first wall 211 and the second wall 212 are both disposed on the same side of the receiving cavity 201 along the first direction X. Along the first direction X, the side of the first wall 211 facing the fixing component 1 protrudes from the second wall 212.

[0208] By setting the first wall 211 and the second wall 212 as a stepped structure with steps, the first connector 20, which is sealed to the first wall 211, will not protrude from the second wall 212. This helps to optimize the spatial layout of the power distribution box 21, reduce the space occupied by the power distribution box 21, and thus improve the structural compactness of the battery device 100.

[0209] According to some embodiments of this application, this application provides an electrical device including the battery device 100 provided in any of the above embodiments, the battery device 100 being used to store or provide electrical energy or to store electrical energy.

[0210] According to some embodiments of this application, this application provides a power distribution mechanism 2, including a power distribution box 21 and a fixing component 1. The power distribution box 21 has a receiving cavity 201 and includes a first wall 211. The first wall 211 is disposed on one side of the receiving cavity 201 along a first direction X and has a mounting hole 202 communicating with the receiving cavity 201. The fixing component 1 includes a fixing member 10, a first connecting member 20, and a second connecting member 30. The fixing member 10 is disposed on the side of the first wall 211 facing the receiving cavity 201 along the first direction X. The fixing member 10 has a first connecting hole 101 and a second connecting hole 102. The first connecting hole 101 communicates with the mounting hole 202 and the receiving cavity 201. The first connecting member... The first connector 20 passes through the first connecting hole 101 and the mounting hole 202. The two ends of the first connector 20 are respectively sealed to the fixing member 10 and the first wall 211. Along the first direction X, the fixing member 10 has a first surface 110 and a first mounting surface 120 on the side facing the first wall 211. The first mounting surface 120 protrudes from the first surface 110 on the side away from the first wall 211. The first surface 110 is connected to the first mounting surface 120. There is a gap 103 between the first mounting surface 120 and the first wall 211 along the first direction X. The second connecting hole 102 communicates with the gap 103 and the receiving cavity 201. The second connector 30 passes through the second connecting hole 102, and part of the second connector 30 is disposed in the gap 103.

[0211] The power distribution mechanism 2 provided in this embodiment can be provided separately. A fixing component 1 is installed on the first wall 211 of the power distribution box 21. The fixing component 1 includes a fixing member 10, a first connecting member 20, and a second connecting member 30. Both the first connecting member 20 and the second connecting member 30 are connected to the fixing member 10, and the first connecting member 20 is also connected to the first wall 211. This allows other structures located within the receiving cavity 201 to be fixed to the fixing member 10 via the first connecting member 20 and the second connecting member 30, thereby fixing them within the power distribution box 21. Improving its stability is beneficial to improving the reliability of the power distribution mechanism 2 and the battery device 100. Specifically, the fixing member 10 can bear the cable tension or vibration load transmitted by the first connecting member 20 and the load transmitted by the second connecting member 30, and transmit them to the first wall 211 of the power distribution box 21. It can share the stress of the power distribution box 21. The fixing member 10 can also bear the vibration from the power distribution box 21 to reduce the vibration force on the insulating base 40, which is beneficial to improving the stability of the insulating base 40 and the structural strength of the power distribution box 21.

[0212] 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.

[0213] Please refer to the following: Figures 3 to 16 According to some embodiments of this application, this application provides a battery device 100, including a power distribution mechanism 2. The power distribution mechanism 2 includes a power distribution box 21 and a fixing component 1. The power distribution box 21 has a receiving cavity 201. The power distribution box 21 includes a first wall 211 and a second wall 212. The first wall 211 and the second wall 212 are both disposed on the same side of the receiving cavity 201 along a first direction X. The first wall 211 is provided with a mounting hole 202 communicating with the receiving cavity 201. Along the first direction X, the side of the first wall 211 facing the fixing component 1 protrudes from the second wall 212.

[0214] The fixing component 1 includes a fixing member 10, a first connecting member 20, a second connecting member 30, and an insulating base 40. The fixing member 10 is disposed on the side of the first wall 211 facing the receiving cavity 201 along the first direction X. The fixing member 10 is welded to the first wall 211. The fixing member 10 is provided with a first connecting hole 101 and a second connecting hole 102. The first connecting hole 101 communicates with the mounting hole 202 and the receiving cavity 201. The first connecting member 20 passes through the first connecting hole 101 and the mounting hole 202. The two ends of the first connecting member 20 are respectively sealed to the fixing member 10 and the first wall 211.

[0215] Along the first direction X, the fixing member 10 has a first surface 110 and a first mounting surface 120 on the side facing the first wall 211, and the first mounting surface 120 protrudes from the first surface 110 on the side away from the first wall 211. The first surface 110 is connected to the first mounting surface 120. A gap 103 exists between the first mounting surface 120 and the first wall 211 along the first direction X. A second connecting hole 102 communicates with the gap 103 and the receiving cavity 201. A second connecting member 30 passes through the second connecting hole 102, and a portion of the second connecting member 30 is disposed in the gap 103. The second connecting member 30 is threadedly engaged with the second connecting hole 102. One end of the second connecting member 30 along the first direction X has a limiting end 310, which abuts against the first mounting surface 120. An insulating base 40 is disposed on the side of the fixing member 10 along the first direction X away from the first wall 211, and the insulating base 40 is connected to the first connecting member 20 and the second connecting member 30 respectively.

[0216] When the fastener 10 includes a first plate 11 and a second plate 12 arranged along the first direction X, the first plate 11 is disposed on the side of the second plate 12 facing the first wall 211 along the first direction X. The first connecting hole 101 includes a first hole 1011 and a second hole 1012 that are connected. The first plate 11 has the first hole 1011, and the second plate 12 has the second hole 1012 and the second connecting hole 102. The side of the first plate 11 facing the first wall 211 along the first direction X has a first surface 110 and a first mounting surface 120. The side of the second plate 12 facing away from the first wall 211 along the first direction X has a second surface 130 and a second mounting surface 140. The second plate 12 has a first welding part 105, and the first plate 11 and the second plate 12 are welded together through the first welding part 105. The thickness of the first plate 11 along the first direction X is L1, where 2mm ≤ L1 ≤ 3mm, and the thickness of the second plate 12 along the first direction X is L2, where 2mm ≤ L2 ≤ 3mm. The first hole 1011 is sealed to the first connector 20. The outer periphery of the first hole 1011 and the first connector 20 have the same shape. In the orthographic projection plane perpendicular to the first direction X, the projection outline of the second hole 1012 surrounds the projection outline of the first hole 1011. A stepped surface 104 is formed between the inner wall of the first hole 1011 and the inner wall of the second hole 1012. A part of the first connector 20 is supported on the stepped surface 104.

[0217] When the fastener 10 is a one-piece molded plate, the thickness of the fastener 10 is L, where 2mm ≤ L ≤ 3mm. The fastener 10 has a second surface 130 and a second mounting surface 140 on the side opposite to the first wall 211 along the first direction X. Along the first direction X, the second mounting surface 140 protrudes from the second surface 130 on the side opposite to the first mounting surface 120. Along the first direction X, the maximum distance between the second mounting surface 140 and the second surface 130 is D, where 2mm ≤ D ≤ 3mm. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended 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 they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, characterized in that, include: A power distribution mechanism includes a power distribution box and a fixing assembly. The power distribution box has a receiving cavity and includes a first wall. The first wall is disposed on one side of the receiving cavity along a first direction and has a mounting hole communicating with the receiving cavity. The fixing component includes a fixing member, a first connecting member, and a second connecting member. Both the first connecting member and the second connecting member are connected to the fixing member. The fixing member is disposed on the side of the first wall facing the receiving cavity along the first direction. The fixing member has a first connecting hole and a second connecting hole. The first connecting hole communicates with the mounting hole and the receiving cavity. The first connecting member passes through the first connecting hole and the mounting hole. Both ends of the first connecting member are respectively sealed to the fixing member and the first wall. Along the first direction, the fastener has a first surface and a first mounting surface on the side facing the first wall, and the first mounting surface protrudes from the first surface on the side away from the first wall. The first surface is connected to the first mounting surface, and there is a gap between the first mounting surface and the first wall along the first direction. The second connecting hole communicates with the gap and the receiving cavity. The second connecting member passes through the second connecting hole, and a portion of the second connecting member is disposed in the gap.

2. The battery device according to claim 1, characterized in that, The fixing component further includes an insulating base, which is disposed on the side of the fixing member away from the first wall along the first direction. The insulating base is connected to the first connector and the second connector respectively.

3. The battery device according to claim 1, characterized in that, The second connector protrudes from the fixing member on the side opposite to the first wall along the first direction.

4. The battery device according to claim 1, characterized in that, The second connector is threaded into the second connecting hole, and / or, one end of the second connector along the first direction has a limiting end, which abuts against the first mounting surface.

5. The battery device according to claim 1, characterized in that, The fastener is provided with a plurality of first connecting holes, and the first connector is provided in a one-to-one correspondence with the first connecting holes; And / or, the fastener is provided with a plurality of second connecting holes, and the second connector is provided in a one-to-one correspondence with the second connecting holes.

6. The battery device according to claim 1, characterized in that, The first surface is attached to the first wall.

7. The battery device according to any one of claims 1 to 6, characterized in that, The first connecting hole includes a first hole and a second hole that are connected to each other. Along the first direction, the first hole is located on the side of the second hole facing the first wall. At least one of the first hole and the second hole is in a sealing fit with the first connector.

8. The battery device according to claim 7, characterized in that, The inner wall contour of at least one of the first hole and the second hole is the same as the outer peripheral contour shape of the first connector.

9. The battery device according to claim 7, characterized in that, In the orthographic projection plane perpendicular to the first direction, the projection outline of the second hole surrounds the projection outline of the first hole. Alternatively, in a projection plane perpendicular to the first direction, the projection outline of the second hole partially overlaps with the projection outline of the first hole.

10. The battery device according to claim 7, characterized in that, Along the first direction, a stepped surface is formed between the inner wall of the first hole and the inner wall of the second hole, and a portion of the first connector is supported on the stepped surface.

11. The battery device according to claim 7, characterized in that, The fastener includes a first plate and a second plate arranged along the first direction. Along the first direction, the first plate is disposed on the side of the second plate facing the first wall. The first plate has the first hole, and the second plate has the second hole. The second plate is provided with the second connecting hole. Along the first direction, the first plate has the first surface on the side facing the first wall, and the second plate has the first mounting surface on the side facing the first wall.

12. The battery device according to claim 11, characterized in that, The fastener has a first welding portion, through which the first plate and the second plate are welded.

13. The battery device according to claim 11, characterized in that, Along the first direction, the thickness of the first plate is L1, 1.5mm≤L1≤5mm; And / or, along the first direction, the thickness of the second plate is L2, 1.5mm≤L2≤4mm.

14. The battery device according to claim 13, characterized in that, 2mm≤L1≤3mm, and / or 2mm≤L2≤3mm.

15. The battery device according to any one of claims 1 to 6, characterized in that, The fastener is a one-piece molded structure.

16. The battery device according to claim 15, characterized in that, Along the first direction, the thickness of the fastener is L, where 1.5mm ≤ L ≤ 5mm.

17. The battery device according to claim 16, characterized in that, 2mm≤L≤3mm.

18. The battery device according to any one of claims 1 to 6, characterized in that, Along the first direction, the fastener has a second surface and a second mounting surface on the side opposite to the first wall. The second surface is connected to the second mounting surface. In a projection plane perpendicular to the first direction, the orthographic projection of the first surface and the orthographic projection of the second surface at least partially overlap. The orthographic projection of the first mounting surface and the orthographic projection of the second mounting surface at least partially overlap. The second connecting hole passes through the first mounting surface and the second mounting surface. Along the first direction, the distance between the first mounting surface and the second mounting surface is less than or equal to the distance between the first surface and the second surface.

19. The battery device according to claim 18, characterized in that, The second surface and the second mounting surface are located in the same plane, or, along the first direction, the second mounting surface protrudes from the second surface toward the side opposite to the first mounting surface.

20. The battery device according to claim 18, characterized in that, Along the first direction, the maximum distance between the second assembly surface and the second surface is D, where 0 ≤ D ≤ 4 mm.

21. The battery device according to claim 20, characterized in that, 2mm≤D≤3mm.

22. The battery device according to any one of claims 1 to 6, characterized in that, The fastener is welded to the first wall.

23. The battery device according to any one of claims 1 to 6, characterized in that, The distribution box also includes a second wall. The first wall and the second wall are both located on the same side of the receiving cavity along the first direction. Along the first direction, the first wall protrudes from the second wall on the side facing the fixing component.

24. An electrical appliance, characterized in that, Includes a battery device according to any one of claims 1 to 23, the battery device being used to provide electrical energy or store electrical energy.

25. A power distribution mechanism, characterized in that, include: A distribution box has a receiving cavity. The distribution box includes a first wall, which is disposed on one side of the receiving cavity along a first direction and has a mounting hole communicating with the receiving cavity. A fixing component includes a fixing member, a first connecting member, and a second connecting member. Both the first connecting member and the second connecting member are connected to the fixing member. The fixing member is disposed on the side of the first wall facing the receiving cavity along the first direction. The fixing member has a first connecting hole and a second connecting hole. The first connecting hole communicates with the mounting hole and the receiving cavity. The first connecting member passes through the first connecting hole and the mounting hole. Both ends of the first connecting member are respectively sealed to the fixing member and the first wall. Along the first direction, the fastener has a first surface and a first mounting surface on the side facing the first wall, and the first mounting surface protrudes from the first surface on the side away from the first wall. The first surface is connected to the first mounting surface, and there is a gap between the first mounting surface and the first wall along the first direction. The second connecting hole communicates with the gap and the receiving cavity. The second connecting member passes through the second connecting hole, and a portion of the second connecting member is disposed in the gap.

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