Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer assembly, an output connecting piece and a protection assembly, the output connector is electrically connected to the battery cell assembly. The protection assembly comprises a mounting space, an external mounting hole and an output mounting hole, the external mounting hole and the output mounting hole are communicated with the mounting space and the outside of the protection assembly respectively, and one part of the output connecting piece is located in the mounting space through the output mounting hole; at least part of the edge of the external mounting hole is provided with a first protrusion protruding in the direction away from the mounting space, and the output connecting piece is used for being electrically connected with an external electric connecting piece through the external mounting hole. According to the battery device in the embodiment of the invention, the probability that fingers of an operator enter the interior of the mounting space is reduced, and safe operation of the operator is realized.

Description

A battery device and an electrical device Technical Field

[0001] This application relates to battery technology, and more particularly to a battery device and an electrical device. Background Technology

[0002] The battery device includes an output connector, a protective assembly, and multiple battery cells. The multiple battery cells are electrically connected in parallel or series and are charged and discharged together through the output connector. A part of the output connector is located in the protective assembly, which provides insulation and protection for the output connector. The protective assembly has an external mounting hole that communicates with the outside world. External electrical connectors pass through the external mounting hole and are electrically connected to the output connector.

[0003] During the maintenance and assembly of battery devices, operators' hands may come into contact with protective components and their fingers may come into contact with output connectors through external mounting holes, posing a safety risk to the operators. Summary of the Invention

[0004] This application provides a battery device and an electrical device that can reduce the probability of an operator's fingers coming into contact with the output connector.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides a battery device, including:

[0007] Battery cell assembly;

[0008] The output connector is electrically connected to the battery cell assembly.

[0009] A protective component includes an installation space, an external mounting hole, and an output mounting hole. The external mounting hole and the output mounting hole are respectively connected to the installation space and the outside of the protective component. A portion of the output connector is located within the installation space via the output mounting hole. At least a portion of the edge of the external mounting hole is provided with a first protrusion protruding in a direction away from the installation space. The output connector is used to electrically connect to an external electrical connector through the external mounting hole.

[0010] The battery device in this embodiment of the application, by providing a first protrusion in the external mounting hole of the protective component, helps to reduce the probability of the operator's fingers entering the installation space, which is beneficial to the operator's safe operation. At the same time, it helps to reduce the interference between the external electrical connector and the first protrusion, and reduces the adverse effects of the external electrical connector contacting the output connector through the external mounting hole.

[0011] In some embodiments, the projection of the external mounting hole along its extension direction is a first projection range. The edge of the external mounting hole includes at least two first edges, which are located on either side of the geometric center of the first projection range and form the two portions of the edge of the external mounting hole that are closest to each other. At least one first edge is provided with the first protrusion. Thus, providing a first protrusion on the first edge helps to increase the probability of the first protrusion contacting a finger and reduce the probability of a finger entering the mounting space and contacting the output connector.

[0012] In some embodiments, each of the first edges is provided with the first protrusion. This helps to increase the probability of the first protrusion coming into contact with a finger and reduce the probability of a finger being inserted into the installation space.

[0013] In some embodiments, the projection of the external mounting hole along its extension direction is a first projection range. The edge of the external mounting hole includes at least two first edges, which are located on either side of the geometric center of the first projection range and form the two closest portions of the edge of the external mounting hole. The distance between the two first edges does not exceed 12.5 mm. This makes it difficult for fingers to pass through the space between the two first edges into the mounting space, reducing the probability of fingers reaching into the mounting space and contacting the output connector.

[0014] In some embodiments, the opening on the side of the output mounting hole away from the mounting space is the output mounting hole, and the edge of the output mounting hole has a second protrusion protruding in a direction away from the mounting space. This helps to reduce the probability of an operator's fingers touching the output connector located in the output mounting hole and the mounting space.

[0015] In some embodiments, the projection of the output mounting hole along its extension direction is a second projection range. The edge of the output mounting hole includes at least two second edges, which are located on either side of the geometric center of the second projection range and form the two portions of the output mounting hole with the closest edge distance. At least one second edge is provided with a second protrusion. Thus, providing a second protrusion on the second edge increases the probability of the second protrusion contacting a finger and reduces the probability of a finger entering the mounting space and output mounting hole and contacting the output connector.

[0016] In some embodiments, the projection of the output mounting hole along its extension direction is a second projection range. The edge of the output mounting hole includes at least two second edges, which are located on either side of the geometric center of the second projection range and form the two closest portions of the edge of the output mounting hole. The distance between the two second edges does not exceed 12.5 mm. This makes it difficult for fingers to pass through the space between the two second edges into the mounting space, reducing the probability of fingers reaching into the mounting space and contacting the output connector.

[0017] In some embodiments, the battery device further includes an insulating member, the insulating member including a first shielding portion, a portion of which passes through the output mounting hole. Thus, due to the obstruction of the first shielding portion, even if an operator's finger enters the output mounting hole, it is blocked by the first shielding portion and separated from the output connector, reducing the probability of partial contact between the finger and the output connector within the output mounting hole.

[0018] In some embodiments, the first shielding portion is located between the output connector and a portion of the edge of the output mounting hole, and the minimum distance between the first shielding portion and the edge of that portion of the output mounting hole does not exceed 12.5 mm. This helps reduce the risk of an operator's fingers passing through the gap between the first shielding portion and the edge of that portion of the output mounting hole and entering the mounting space, thus coming into contact with the output connector within the mounting space.

[0019] In some embodiments, the battery device further includes a mounting housing, the battery cell assembly is located within the mounting housing, the protective assembly is located on one side of the mounting housing along a first direction, and the external mounting hole includes a first through hole located on the side of the mounting space away from the mounting housing along the first direction. This facilitates increasing the distance between the first through hole and the mounting housing, thereby increasing the creepage distance between external electrical connectors passing through the first through hole and the mounting housing.

[0020] In some embodiments, the battery device further includes a mounting housing, within which the battery cell assembly is located, and a protective assembly is located on one side of the mounting housing along a first direction. The external mounting hole includes a second through hole located on one side of the mounting space along a second direction, where the first and second directions intersect. Thus, the second through hole facilitates the adaptation of the output connector to the electrical connection requirements of external electrical connectors of different shapes and arrangements, improving the adaptability of the output connector.

[0021] In some embodiments, the second through hole is spaced apart from the mounting housing, and the outer surface of the protective component is provided with a partition groove. The edge of the external mounting hole of the second through hole is spaced apart from the partition groove. Thus, the structure forming the wall of the partition groove helps to increase the creepage distance between the electrical connector passing through the second through hole and the mounting housing.

[0022] In some embodiments, the battery device further includes a first insulating buffer, at least a portion of which is disposed within the external mounting hole. The first insulating buffer is elastically extendable and retractable in a direction perpendicular to the extension direction of the external mounting hole. Thus, when no electrical connector is inserted into the external mounting hole, the first insulating buffer is in an extended state, which helps to block fingers and reduce the space for finger movement within the external mounting hole, thereby reducing the probability of fingers entering the mounting space and the output connector. When an electrical connector is inserted into the external mounting hole, the electrical connector can compress the first insulating buffer, allowing the electrical connector to connect normally to the output connector.

[0023] In some embodiments, the protective assembly includes a first housing and a second housing, the first housing having a mounting cavity and one side of the mounting cavity being open to form a mounting opening, and the first housing and the second housing being movable relative to each other to switch between an open state and a closed state;

[0024] In the closed state, the second housing covers the mounting opening to form the mounting space and the external mounting hole together with the first housing;

[0025] In the open state, in a projection plane perpendicular to the opening direction of the mounting opening, at least a portion of the projection of the mounting opening along its opening direction is located outside the projection range of the second housing along the opening direction of the mounting opening.

[0026] Thus, in the open state, the installation opening facilitates the connection between external electrical connectors and output connectors, improving operational convenience; in the closed state, the installation space provides protection for the connection between external electrical connectors and output connectors.

[0027] In some embodiments, the protective assembly further includes a fixing member, at least a portion of which is located within the mounting cavity and detachably connected to the output connector. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening, the projection of the mounting opening along its opening direction includes a third projection range. The third projection range is circular, and its center coincides with the geometric center of the projection of the fixing member along the opening direction of the mounting opening. The third projection range is located outside the projection range of the second housing along the opening direction of the mounting opening, and the diameter of the third projection range is between 20 mm and 23 mm. This helps reduce the risk of interference between the installation tool and the second housing during the installation of the fixing member, output connector, and external electrical connectors, thus improving installation convenience. Simultaneously, it also helps to make the mounting cavity structure more compact, resulting in a more compact battery device structure.

[0028] In some embodiments, the first housing and the second housing are rotatably connected. This simplifies the movement between the first housing and the second housing and facilitates operation.

[0029] This application also provides an electrical device, which includes any of the battery devices described in the foregoing embodiments, and the battery device is used as a power source for the electrical device.

[0030] Thus, using the battery device in the aforementioned embodiments helps reduce the risk of operators' fingers coming into contact with the output connector inside the protective assembly during the maintenance and repair of the battery device. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the electrical device provided in an embodiment of this application;

[0032] Figure 2 is a schematic diagram of the battery device provided in an embodiment of this application;

[0033] Figure 3 is a schematic diagram of the battery module provided in an embodiment of this application;

[0034] Figure 4 is an exploded view of the battery module in Figure 3;

[0035] Figure 5 is a partially enlarged schematic diagram of position A in Figure 3, with the protective component in the closed state;

[0036] Figure 6 is a schematic diagram of the embodiment in Figure 3 from another perspective, with the protective components in the closed state;

[0037] Figure 7 is a partial cross-sectional view of the BB position in Figure 6;

[0038] Figure 8 is a partial cross-sectional view of the CC position in Figure 6;

[0039] Figure 9 is a partial cross-sectional view of another embodiment of this application at position BB in Figure 6;

[0040] Figure 10 is a partially enlarged schematic diagram of another embodiment of this application at position A in Figure 3;

[0041] Figure 11 is a partially enlarged schematic diagram of an embodiment of this application at position A in Figure 3, with the protective component in the open state;

[0042] Figure 12 is a schematic diagram of the protective components in Figure 6 in the open state;

[0043] Figure 13 is a magnified view of a portion of position D in Figure 12.

[0044] Explanation of reference numerals in the attached figures

[0045] 1000, Vehicle; 100, Battery Unit; 110, Battery Module; 200, Controller; 300, Motor; 10, Battery Cell Assembly; 11, Battery Cell; 20, Output Connector; 30, Protective Component; 30a, Mounting Space; 30b, External Mounting Hole; 30ba, First Opening; 30bb, First Edge; 30bc, First Through Hole; 30bd, Second Through Hole; 30c, Output Mounting Hole; 30ca, Second Opening; 30cb... Second edge; 30d, dividing groove; 31, first protrusion; 32, second protrusion; 33, first housing; 33a, mounting cavity; 33aa, mounting opening; 33ab, third projection range; 34, second housing; 35, fastener; 40, insulating component; 41, first shielding part; 42, second shielding part; 50, mounting shell; 60, first insulating buffer; 70, box assembly; 71, first box; 72, second box; 2000, simulated finger model. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

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

[0051] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0053] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0054] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. Specifically, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0055] In the description of the embodiments of this utility model, for ease of explanation, as shown in the accompanying drawings, the direction of arrow X is referred to as the "first direction", the direction of arrow Y as the "second direction", and the direction of arrow Z as the "third direction".

[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] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. There are no particular limitations in the embodiments of this application.

[0059] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, with the separator positioned between the positive and negative electrodes. During the charging and discharging process of a single battery cell, 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, prevents short circuits while allowing active ions to pass through.

[0060] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0061] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0062] In some implementations, the electrode assembly is a stacked structure.

[0063] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0064] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0065] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0066] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0067] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0068] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0069] In some embodiments, the electrode assembly is provided with tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0070] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab, or it can be indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing.

[0071] In some embodiments, the battery cell may include a casing. The casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc. In some embodiments, the casing may be a sealed structure or a non-sealed structure. As an example, when the casing is a non-sealed structure, the casing serves to protect the electrode assembly, and a sealing bag is included between the casing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag may be a bag-shaped insulating component or an aluminum-plastic film. When the casing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0072] In some embodiments, a pressure relief mechanism is provided on the casing of the battery cell. The pressure relief mechanism is used to release the internal gas of the battery cell.

[0073] As an example, the internal pressure or temperature of a battery cell is actuated to release the internal pressure or temperature when it reaches a predetermined threshold. When the internal pressure or temperature of a battery cell reaches the predetermined threshold, the pressure relief mechanism is activated or a weak structure in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released. The threshold design varies depending on the design requirements. The threshold may depend on the materials of one or more of the positive electrode, negative electrode, electrolyte, and separator in the battery cell.

[0074] As an example, the pressure relief mechanism can be integrally formed with the housing.

[0075] As an example, the pressure relief mechanism can also be separately installed and connected to the outer casing.

[0076] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0077] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0078] As an example, the battery cell assembly can be part of a battery module, which is formed by arranging and fixing multiple battery cells together to create an independent module. As another example, the battery module can be formed by bundling multiple battery cells together with cable ties.

[0079] In some embodiments, the battery device may be a battery pack, which includes a housing assembly and one or more individual battery cells housed within the housing assembly.

[0080] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing assembly by fixing the battery module in the housing assembly.

[0081] As an example, the battery cell assembly can also be housed in the housing assembly by directly fixing multiple battery cells to the housing assembly.

[0082] As an example, referring to Figure 2, the housing assembly 70 may include a first housing 71 and a second housing 72. The first housing 71 and the second housing 72 are fastened together, forming a closed space inside the housing assembly 70 to house the individual battery cells. Here, "closed" refers to covering or shutting off, and can be either sealed or unsealed. The first housing 71 may be a top cover or a bottom plate.

[0083] As an example, the housing assembly may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing assembly forms a closed space to accommodate individual battery cells.

[0084] In some embodiments, the housing assembly may be part of the vehicle's chassis structure. For example, a portion of the housing assembly may be at least a portion of the vehicle's floor, or a portion of the housing assembly may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0085] The technical solutions described in the embodiments of this application are applicable to various electrical devices 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.

[0086] In the following embodiments, for ease of explanation, a vehicle 1000 is used as an example of an electrical device according to an embodiment of this application. The description is as follows with reference to the accompanying drawings.

[0087] 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. As shown in Figure 1, a battery device 100 is installed inside vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, it can serve as the operating power source for vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 controls the battery device 100 to supply power to the motor 300, for example, to meet the power needs of vehicle 1000 during starting, navigation, and driving.

[0088] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0089] The embodiments of this application will now be described in detail.

[0090] In related technologies, a battery device includes multiple battery cells, which are electrically connected to each other in series or parallel to form a battery cell assembly. The battery cell assembly is electrically connected to other electrical connectors through an output connector to realize the charging and discharging functions of the battery cell assembly.

[0091] The battery device also includes a protective assembly with an external mounting hole. A portion of the output connector is located inside the protective assembly. An external electrical connector extends into the interior of the protective assembly through the external mounting hole and contacts the output connector to achieve electrical connection between the two.

[0092] It is understandable that the battery cell assembly, output connector, and protective components can be inspected, assembled, and transported as a single unit, and no external electrical connectors are inserted into the external mounting holes during this process. However, when operators work on the assembly formed by the battery cell assembly, output connector, and protective components, their hands may touch the protective components, and their fingers may enter the external mounting holes, posing a risk of contact between the operator's fingers and the output connectors.

[0093] This application provides a battery device and an electrical device, wherein a first protrusion is provided on the edge of the external mounting hole of the protective component of the battery device. The first protrusion can block the operator's fingers and reduce the risk of the operator's fingers coming into contact with the output connector through the external mounting hole.

[0094] Specifically, referring to Figures 3 to 5, the battery device 100 includes a battery cell assembly 10, an output connector 20, and a protective assembly 30.

[0095] Output connector 20 electrically connects to battery cell assembly 10.

[0096] The protective component 30 includes a mounting space 30a, an external mounting hole 30b, and an output mounting hole 30c. The external mounting hole 30b and the output mounting hole 30c are respectively connected to the outside of the mounting space 30a and the protective component 30. A portion of the output connector 20 is located in the mounting space 30a through the output mounting hole 30c. At least a portion of the edge of the external mounting hole 30b is provided with a first protrusion 31 protruding in a direction away from the mounting space 30a. The output connector 20 is used to electrically connect to an external electrical connector through the external mounting hole 30b.

[0097] The battery cell assembly 10 includes multiple battery cells 11, which are electrically connected to each other through series and parallel connections.

[0098] The output connector 20 is electrically connected to the battery cell assembly 10, enabling each battery cell 11 in the battery cell assembly 10 to uniformly perform charging and discharging functions through the output connector 20.

[0099] The output mounting hole 30c is used for a portion of the output connector 20 to extend into the mounting space 30a.

[0100] The external mounting hole 30b is used for external electrical connectors to extend into the mounting space 30a. The external electrical connectors can be other electrical connectors in the battery device 100 that require electrical conduction, other than the battery cell assembly 10; or they can be other electrical control devices outside the battery device 100 that require electrical conduction.

[0101] Understandably, at least a portion of the protective component 30 is made of insulating material.

[0102] The output connector 20 is used to electrically connect with external electrical connectors within the installation space 30a. The protective component 30 protects the electrical connection point between the two, reducing the probability of collisions between other objects causing the two to lose their electrical connection. At the same time, the protective component 30 can also act as insulation, reducing the probability of short circuits between the electrical connection point between the two and other objects.

[0103] Understandably, a portion of the output connector 20 is located outside the protective assembly 30.

[0104] The external mounting hole 30b has an opening at one end along its extension direction that communicates with the mounting space 30a, and an opening at the other end that communicates with the outside of the protective assembly 30.

[0105] The edge of the external mounting hole 30b is provided with a first protrusion 31, which means that in the projection plane perpendicular to the extension direction of the external mounting hole 30b, at least a portion of the boundary of the external mounting hole 30b coincides with the boundary of the projection of the first protrusion 31 along the extension direction of the external mounting hole 30b.

[0106] The first protrusion 31 protrudes from the edge of the external mounting hole 30b in a direction away from the mounting space 30a, so that when the operator's hand touches the protective component 30, it will come into contact with the first protrusion 31 along the extending direction of the external mounting hole 30b. Referring to Figure 9, since the tip of the finger is thinner than the back, the blocking effect of the first protrusion 31 helps to reduce the depth to which the operator's finger is inserted into the external mounting hole 30b and the mounting space 30a, reducing the risk of the finger coming into contact with the output connector 20 in the mounting space 30a through the external mounting hole 30b; at the same time, the protruding direction of the first protrusion 31 intersects with the extending direction of the external mounting hole 30b, reducing the obstruction of the first protrusion 31 to the insertion of external electrical connectors into the external mounting hole 30b.

[0107] The battery device 100 in this embodiment of the application, by providing a first protrusion 31 in the external mounting hole 30b of the protective component 30, helps to reduce the probability of the operator's fingers entering the internal mounting space 30a, which is conducive to the operator's safe operation. At the same time, it helps to reduce the interference between the external electrical connector and the first protrusion 31, and reduces the adverse effects of the external electrical connector contacting the output connector 20 through the external mounting hole 30b.

[0108] Understandably, the opening on the side of the external mounting hole 30b furthest from the mounting space is the first opening 30ba. The first protrusion 31 is located at the edge of the first opening 30ba. The first opening 30ba is located on the outer surface of the protective assembly 30.

[0109] In some embodiments, both the external mounting hole 30b and the output mounting hole 30c must meet the IPXXB protection rating requirements of the IEC 60529 standard. Specifically, a simulated finger model 2000 with a diameter of 7 mm to 9 mm and a length of 95 mm to 105 mm is inserted into the external mounting hole 30b and the output mounting hole 30c, respectively. The insertion depth of the simulated finger is not more than 10 mm, and it cannot contact the output connector 20.

[0110] The specific type of other electrical connectors electrically connected to the output connection is not limited. For example, the battery device 100 also includes a copper busbar that extends into the mounting space 30a through the external mounting hole 30b and contacts the output connector 20.

[0111] In some embodiments, the edge of the external mounting hole 30b is provided with a first protrusion 31, which surrounds and closes the periphery of the edge of the external mounting hole 30b. This facilitates blocking fingers from various directions around the periphery of the external mounting hole 30b.

[0112] In some embodiments, the edge of the external mounting hole 30b is provided with a plurality of first protrusions 31, each of the first protrusions 31 surrounding the periphery of the edge of the first opening 30ba and spaced apart from each other. This facilitates the blocking of fingers from multiple directions around the periphery of the external mounting hole 30b and reduces the material required to manufacture the first protrusions 31.

[0113] In some embodiments, referring to Figures 6 to 8, the projection of the external mounting hole 30b along the extension direction of the external mounting hole 30b is a first projection range. The edge of the external mounting hole 30b includes at least two first edges 30bb. The two first edges 30bb are located on both sides of the geometric center of the first projection range and form the two parts of the edge of the external mounting hole 30b that are closest to each other. At least one first edge 30bb is provided with a first protrusion 31.

[0114] The first projection area is a closed figure formed by connecting multiple line segments end to end. The number of first edges 30bb is at least two, and the geometric center of the first projection area is located between the two first edges 30bb.

[0115] It is understandable that among the multiple line segments forming the first projection range, there are multiple pairs of line segments located on both sides of the geometric center of the first projection range, wherein at least one pair of line segments with the smallest distance from each other forms two first edges 30bb.

[0116] Thus, by setting the first protrusion 31 on the first edge 30bb, it is beneficial to increase the probability of the first protrusion 31 contacting the finger and reduce the probability of the finger being inserted into the installation space 30a and contacting the output connector 20.

[0117] In some embodiments, the first projection area is shaped as a convex polygon so that external electrical connectors extend into the mounting space 30a.

[0118] In some embodiments, the first projection area is rectangular in shape, with the long side of the rectangle forming a first edge 30bb.

[0119] In some embodiments, referring to FIG7, each first edge 30bb is provided with a first protrusion 31.

[0120] This increases the probability of the first protrusion 31 contacting the finger and reduces the probability of the finger being inserted into the installation space 30a.

[0121] In some embodiments, referring to Figures 7 and 8, the projection of the external mounting hole 30b along its extension direction is a first projection range. The edge of the external mounting hole 30b includes at least two first edges 30bb. The two first edges 30bb are located on both sides of the geometric center of the first projection range and form the two parts of the edge of the external mounting hole 30b that are closest to each other. The distance between the two first edges 30bb does not exceed 12.5mm. That is, the distance between the two first edges 30bb is L1, where L1 ≤ 12.5mm.

[0122] This makes it difficult for fingers to pass through the space between the two first edges 30bb and enter the mounting space 30a, reducing the probability of fingers reaching into the mounting space 30a and coming into contact with the output connector 20.

[0123] The specific value of the spacing between the two first edges 30bb is not limited, and can be 12.5mm, 12mm, 11.5mm, 11mm, 10.5mm, 10mm, etc.

[0124] The specific method for measuring the distance between the two first edges 30bb is not limited. For example, at room temperature, both the main scale and the vernier scale of the vernier caliper are inserted into the external mounting hole 30b, with the main scale abutting against the structure forming one of the two opposing first edges 30bb and the vernier scale abutting against the structure forming the other. Reading the reading on the vernier caliper yields the distance between the two first edges 30bb.

[0125] In some embodiments, referring to FIG9, the output mounting hole 30c is provided with a second protrusion 32 protruding in a direction away from the mounting space 30a.

[0126] The output mounting hole 30c has an opening at one end along its extension direction that communicates with the mounting space 30a, and an opening at the other end that communicates with the outside of the protective assembly 30.

[0127] The output mounting hole 30c has a second protrusion 32 on its edge, which means that in the projection plane perpendicular to the extension direction of the output mounting hole 30c, at least a portion of the boundary of the output mounting hole 30c coincides with the boundary of the projection of the second protrusion 32 along the extension direction of the output mounting hole 30c.

[0128] The second protrusion 32 is located at the edge of the output mounting hole 30c and protrudes in a direction away from the mounting space 30a, so that when the operator's hand touches the protective component 30, the operator will come into contact with the first protrusion 31 along the extension direction of the output mounting hole 30c.

[0129] This helps reduce the probability that the operator's fingers will come into contact with the output connector 20 located in the output mounting hole 30c and the mounting space 30a.

[0130] In some embodiments, referring to FIG9, the opening on the side of the output mounting hole 30c away from the mounting space 30a is a second opening 30ca, the second opening 30ca is located on the outer surface of the protective component 30, and the edge of the second opening 30ca is provided with a second protrusion 32.

[0131] In some embodiments, a second protrusion 32 is provided on the edge of the output mounting hole 30c, and the second protrusion 32 surrounds and closes the periphery of the edge of the output mounting hole 30c. In this way, it is beneficial to block fingers from all directions around the periphery of the output mounting hole 30c.

[0132] In some embodiments, the edge of the output mounting hole 30c is provided with a plurality of second protrusions 32, each second protrusion 32 being arranged around the periphery of the edge of the output mounting hole 30c and spaced apart from each other. This facilitates the blocking of fingers from multiple directions around the periphery of the output mounting hole 30c and reduces the material required to manufacture the second protrusions 32.

[0133] In some embodiments, referring to FIG9, the projection of the output mounting hole 30c along the extension direction of the output mounting hole 30c is the second projection range. The edge of the output mounting hole 30c includes at least two second edges 30cb. The two second edges 30cb are located on both sides of the geometric center of the second projection range and form the two parts of the edge of the output mounting hole 30c that are closest to each other. At least one second edge 30cb is provided with a second protrusion 32.

[0134] The second projection area is a closed figure formed by connecting multiple line segments end to end. The number of second edges 30cb is at least two, and the geometric center of the second projection area is located between the two second edges 30cb.

[0135] It is understandable that among the multiple line segments forming the second projection range, there are multiple pairs of line segments located on both sides of the geometric center of the second projection range, wherein at least one pair of line segments with the smallest distance from each other forms two second edges 30cb.

[0136] Thus, providing a second protrusion 32 on the second edge 30cb helps to increase the probability of the second protrusion 32 contacting the finger and reduces the probability of the finger reaching into the mounting space 30a and the output mounting hole 30c and contacting the output connector 20.

[0137] In some embodiments, the second projection area is shaped as a convex polygon so that external electrical connectors extend into the mounting space 30a.

[0138] In some embodiments, the second projection range is rectangular in shape, with the long side of the rectangle forming a second edge 30cb.

[0139] In some embodiments, referring to FIG9, the projection of the output mounting hole 30c along the extending direction of the output mounting hole 30c is the second projection range. The edge of the output mounting hole 30c includes at least two second edges 30cb. The two second edges 30cb are located on both sides of the geometric center of the second projection range and form the two parts of the edge of the output mounting hole 30c that are closest to each other. The distance between the two second edges 30cb does not exceed 12.5mm. That is, the distance between the two second edges 30cb is L2, and L2≤12.5mm.

[0140] This makes it difficult for fingers to pass through the space between the two second edges 30cb into the mounting space 30a, reducing the probability of fingers reaching into the mounting space 30a and coming into contact with the output connector 20.

[0141] The specific value of the 30cb spacing between the two second edges is not limited, and can be 12.5mm, 12mm, 11.5mm, 11mm, 10.5mm, 10mm, etc.

[0142] The specific method for measuring the distance between the two second edges 30cb is not limited. For example, at room temperature, both the main scale and the vernier scale of the vernier caliper are inserted into the output mounting hole 30c, with the main scale abutting against the structure forming one of the two opposing second edges 30cb and the vernier scale abutting against the structure forming the other. Reading the reading on the vernier caliper yields the distance between the two second edges 30cb.

[0143] In some embodiments, referring to FIG7, the battery device 100 further includes an insulating member 40, the insulating member 40 including a first shielding portion 41, a portion of the first shielding portion 41 passing through the output mounting hole 30c.

[0144] The insulating component 40 is made of insulating material.

[0145] Thus, due to the obstruction of the first blocking part 41, even if the operator's finger enters the output mounting hole 30c, it can be blocked by the first blocking part 41 and separated from the output connecting piece, reducing the probability of the finger coming into partial contact with the output connecting piece 20 inside the output mounting hole 30c.

[0146] In some embodiments that include the second edge 30cb, the first shield 41 is located between the second edge 30cb and the output connector 20. This further reduces the probability of an operator's fingers coming into contact with the output connector.

[0147] In some embodiments, referring to FIG7, the first blocking portion 41 is located between the output connector 20 and a portion of the edge of the output mounting hole 30c, and the minimum distance between the first blocking portion 41 and the edge of that portion of the output mounting hole 30c does not exceed 12.5mm. That is, the minimum distance between the first blocking portion 41 and the edge of that portion of the output mounting hole 30c is L3, and L3≤12.5mm.

[0148] This helps reduce the risk that an operator's fingers may pass through the gap between the first shield 41 and the edge of the output mounting hole 30c and enter the mounting space 30a, thus coming into contact with the output connector 20 within the mounting space 30a.

[0149] The specific value of the minimum distance between the first shielding part 41 and the edge of the output mounting hole 30c is not limited, and can be 12.5mm, 12mm, 11.5mm, 11mm, 10.5mm, 10mm, etc.

[0150] The specific method for measuring the minimum distance between the first blocking part 41 and the edge of the output mounting hole 30c is not limited. For example, at room temperature, both the main scale and the vernier scale of a vernier caliper are inserted into the gap between the first blocking part 41 and the edge of the output mounting hole 30c, with one of the main scale, the first blocking part 41, and the structure forming the edge of the output mounting hole 30c abutting against each other, and the vernier scale abutting against the other. Reading the reading of the vernier caliper yields the distance between the first blocking part 41 and the edge of the output mounting hole 30c.

[0151] Understandably, the first shield 41 is positioned on the side of the output connector 20 that is more easily touched by the operator's fingers, and its specific orientation relative to the output connector 20 can be flexibly arranged according to the actual layout requirements of the battery device 100. For example, during operation, if the output mounting hole 30c is located at the top of the protective assembly 30 and extends vertically, at least a portion of the first shield 41 is positioned above a portion of the output connector 20 to reduce the probability of the operator's fingers contacting the output connector 20.

[0152] In some embodiments, referring to FIG7, the insulating member 40 further includes a second shielding portion 42 located outside the protective assembly 30. The second shielding portion 42 is used to cover the portion of the output connector 20 located outside the protective assembly 30. This helps to reduce the probability of the operator's hand coming into contact with the portion of the output connector 20 located outside the protective assembly 30.

[0153] The specific material of the insulating component 40 is not limited, such as polyurethane, nylon, etc.

[0154] The specific number of external mounting holes 30b is not limited; it can be one or more.

[0155] In some embodiments, referring to FIG3, the battery device 100 further includes a mounting housing 50, the battery cell assembly 10 is located inside the mounting housing 50, and the protective assembly 30 is located outside the mounting housing 50.

[0156] Thus, the mounting housing 50 can protect the battery cell assembly 10 and also facilitates the transportation of the mounting housing 50, protective assembly 30 and output connector 20 as a whole.

[0157] Understandably, a portion of the output connector 20 is located within the mounting housing 50 for electrical connection with the battery cell assembly 10. The mounting housing 50 has a through-hole to connect the space inside the mounting housing 50 with the outside of the mounting housing 50, through which the output connector 20 extends to the outside of the mounting housing 50 and into the output mounting hole 30c.

[0158] In some embodiments, the mounting housing 50 is made of metal, which helps to improve the structural strength of the mounting housing 50.

[0159] In some embodiments with mounting housing 50, referring to Figures 3 and 5, protective component 30 is located on one side of mounting housing 50 along a first direction, and external mounting hole 30b includes a first through hole 30bc, which is located on the side of mounting space 30a away from mounting housing 50 along the first direction.

[0160] This increases the distance between the first through hole 30bc and the mounting housing 50, thereby increasing the creepage distance between the external electrical connectors passing through the first through hole 30bc and the mounting housing 50.

[0161] In some embodiments with mounting housing 50, referring to Figures 3 and 5, protective component 30 is located on one side of mounting housing 50 along a first direction, and external mounting hole 30b includes second through hole 30bd, which is located on one side of mounting space 30a along a second direction, where the first direction intersects the second direction.

[0162] Thus, the second through hole 30bd facilitates the output connector 20 to adapt to the electrical connection requirements of external electrical connectors of different shapes and arrangements, thereby improving the adaptability of the output connector 20.

[0163] In some embodiments, the first direction is perpendicular to the second direction.

[0164] In some embodiments, the protective component 30 has only a first through hole 30bc; in some embodiments, the protective component 30 has only a second through hole 30bd; in other embodiments, the protective component 30 has multiple external mounting holes 30b, the external mounting holes 30b including the first through hole 30bc and the second through hole 30bd.

[0165] In some embodiments, referring to FIG5, the second through hole 30bd is spaced apart from the mounting shell 50. That is, the mounting shell 50 does not form part of the inner wall of the second through hole 30bd.

[0166] This helps to increase the creepage distance between the electrical connector passing through the second through hole 30bd and the mounting housing 50.

[0167] In some embodiments, the output mounting hole 30c is located on the side of the protective assembly 30 close to the mounting housing 50 along the first direction, so that the output connector extends into the output mounting hole 30c.

[0168] In some embodiments, referring to Figures 5 and 8, the outer surface of the protective component 30 is provided with a partition groove 30d, and the edge of the second through hole 30bd is spaced apart from the partition groove 30d.

[0169] Thus, by forming the wall structure of the partition groove 30d, it is beneficial to increase the creepage distance between the electrical connector passing through the second through hole 30bd and the mounting housing 50.

[0170] In some embodiments, referring to FIG10, the battery device 100 further includes a first insulating buffer 60, at least a portion of which is disposed in the external mounting hole 30b. The first insulating buffer 60 is elastically extendable and retractable in a direction perpendicular to the extension direction of the external mounting hole 30b.

[0171] Thus, when no electrical connector is inserted into the external mounting hole 30b, the first insulating buffer 60 is in an extended state, which helps to block the finger and reduce the finger's movement space within the external mounting hole 30b, thereby reducing the probability of the finger entering the mounting space 30a and the output connector 20; when an electrical connector is inserted into the external mounting hole 30b, the electrical connector can compress the first insulating buffer 60, thereby enabling the electrical connector to connect normally with the output connector 20.

[0172] The specific types of insulating materials used in the protective component 30 can be polyethylene, polyvinyl chloride, polypropylene, polycarbonate, nylon, etc.

[0173] In some embodiments, the battery device 100 further includes a second insulating buffer disposed in the output mounting hole 30c, the second insulating buffer being elastically expandable and contractible in a direction perpendicular to the extension direction of the output mounting hole 30c.

[0174] Thus, the second insulating buffer can prevent the operator's fingers from entering the output mounting hole 30c.

[0175] It is understandable that the first insulating buffer 60 and the second insulating buffer are made of insulating materials, such as plastic foam.

[0176] In some embodiments, referring to Figures 7, 8, and 11, the protective assembly 30 includes a first housing 33 and a second housing 34. The first housing 33 has a mounting cavity 33a, and one side of the mounting cavity 33a is open to form a mounting opening 33aa. The first housing 33 and the second housing 34 are movable relative to each other to switch between an open state and a closed state. In the closed state, the second housing 34 covers the mounting opening 33aa to form a mounting space 30a and a first opening 30ba together with the first housing 33. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening 33aa, at least a portion of the projection of the mounting opening 33aa along its opening direction is located outside the projection range of the second housing 34 along the opening direction of the mounting opening 33aa.

[0177] Thus, in the open state, the installation opening 33aa facilitates the connection between the external electrical connector and the output connector 20, improving the ease of operation; in the closed state, the installation space 30a provides protection for the connection between the external electrical connector and the output connector 20.

[0178] The first housing 33 and the second housing 34 together form the first opening 30ba, which makes it easier for external electrical connectors to be installed into the mounting cavity 33a when the opening state is open, and also reduces the probability of interference between external electrical connectors and the first housing 33 and the second housing 34 respectively during the process of changing from the opening state to the closing state.

[0179] Both the first housing 33 and the second housing 34 are made of insulating material, and the materials of the two can be the same or different.

[0180] In some embodiments, referring to FIG7, the protective assembly 30 further includes a fastener 35, at least a portion of which is located within the mounting cavity 33a and is detachably connected to the output connector 20.

[0181] This makes it easier to fix the output connector 20 at a certain position within the installation space 30a.

[0182] In some embodiments, the fastener 35 is also used for detachable connection with an external electrical connector, thereby better securing the relative position of the external electrical connector and the output connector 20 and maintaining the stability of the electrical connection between them.

[0183] The specific form of the fastener 35 is not limited, such as a stud.

[0184] In some embodiments, referring to Figures 12 and 13, in the open state, in a projection plane perpendicular to the opening direction of the mounting opening 33aa, the projection of the mounting opening 33aa along its opening direction includes a third projection range 33ab. The third projection range 33ab is circular, and its center coincides with the geometric center of the projection of the fixing member 35 along the opening direction of the mounting opening 33aa. The third projection range 33ab is located outside the projection range of the second housing 34 along the opening direction of the mounting opening 33aa, and the diameter of the third projection range 33ab is in the range of 20mm to 23mm. That is, the diameter of the third projection range 33ab is D1, 20mm≤D1≤23mm.

[0185] This helps reduce the risk of interference between the installation tool and the second housing 34 during the installation of the fixing member 35, the output connector 20 and the external electrical connector, and improves the ease of installation; at the same time, it also helps to make the structure of the mounting cavity 33a more compact, thus making the structure of the battery device 100 more compact.

[0186] The specific value of the diameter of the third projection range 33ab can be 20mm, 20.5mm, 21mm, 21.5mm, 22mm, 22.5mm, 23mm, etc.

[0187] The specific method for measuring the third projection range 33ab is not limited. For example, in a room temperature environment, the protective component 30 in the open state is placed in the measurement area of ​​the projection measuring instrument, the geometric center of the projection of the fixing member 35 is selected, and a circle with a diameter of 23mm and a circle with a diameter of 20mm are drawn on the screen of the projection measuring instrument with the geometric center as the center. It is determined whether the two circles are within the projection range of the mounting opening 33aa and outside the projection range of the second housing 34.

[0188] In some embodiments, in the closed state, the first housing 33 and the second housing 34 surround and form an output mounting hole 30c. This simplifies the formation structure of the output mounting hole 30c.

[0189] In some embodiments, the first housing 33 and the second housing 34 are rotatably connected. This simplifies the movement between the first housing 33 and the second housing 34 and facilitates operation.

[0190] In some embodiments that include a first direction and a second direction, the rotation axes of the first housing 33 and the second housing 34 extend along a third direction, and the first direction, the second direction and the third direction intersect each other.

[0191] In some embodiments, the first direction, the second direction, and the third direction are perpendicular to each other.

[0192] It is understood that the first protrusion 31 is provided in at least one of the first housing 33 and the second housing 34.

[0193] In some embodiments, one of the first housing 33 and the second housing 34 is provided with an elastic buckle, and the other is provided with a fixing groove. The elastic buckle can be inserted into or disengaged from the fixing groove by elastic deformation. In the open state, the elastic opening disengages from the fixing groove so that the first housing 33 can move relative to the second housing 34. In the closed state, the elastic buckle is inserted into the fixing groove so that the relative positions of the first housing 33 and the second housing 34 are fixed.

[0194] In some embodiments, the mounting housing 50, the battery cell assembly 10, the output connector 20, and the protective assembly 30 together form a battery module 110. The output connector 20 serves as one of the positive and negative terminals of the battery module 110.

[0195] In some embodiments, the number of output connectors 20 is at least two, one serving as the positive terminal of the battery module 110 and the other serving as the negative terminal of the battery module 110.

[0196] The battery device 100 includes one or more battery modules 110.

[0197] In embodiments where there are multiple battery modules 110, the battery device 100 includes electrical connectors that connect to the output connectors 20 of each battery module 110.

[0198] In some embodiments, the battery device 100 further includes a housing assembly 70, which has a mounting cavity 33a, and the battery module 110 is disposed in the mounting cavity 33a.

[0199] In some embodiments, the battery device 100 further includes a first housing 71 and a second housing 72, which together enclose a mounting cavity 33a.

[0200] A specific embodiment of this application is as follows:

[0201] The battery device 100 includes a battery cell assembly 10, an output connector 20, a protective assembly 30, an insulator 40, a mounting shell 50, a first insulating buffer 60, and a fixing member 35. The output connector 20 is electrically connected to the battery cell assembly 10. The protective assembly 30 includes a mounting space 30a, an external mounting hole 30b, and an output mounting hole 30c. Both the external mounting hole 30b and the output mounting hole 30c are respectively connected to the outside of the mounting space 30a and the protective assembly 30. A portion of the output connector 20 is located within the mounting space 30a through the output mounting hole 30c. At least a portion of the edge of the external mounting hole 30b is provided with a first protrusion 31 protruding in a direction away from the mounting space 30a. The output connector 20 is used to electrically connect to an external electrical connector through the external mounting hole 30b. The projection of the external mounting hole 30b along its extension direction is the first projection range. The edge of the external mounting hole 30b includes at least two first edges 30bb, which are located on both sides of the geometric center of the first projection range and form the two closest parts of the edge of the external mounting hole 30b. At least one first edge 30bb is provided with a first protrusion 31. Each first edge 30bb is provided with a first protrusion 31. The distance between the two first edges 30bb does not exceed 12.5mm. The edge of the output mounting hole 30c away from the mounting space 30a is provided with a second protrusion 32 protruding in the direction away from the mounting space 30a. The projection of the output mounting hole 30c along its extension direction is the second projection range. The edge of the output mounting hole 30c includes at least two second edges 30cb, which are located on both sides of the geometric center of the second projection range and form the two closest parts of the edge of the output mounting hole 30c. At least one second edge 30cb is provided with a second protrusion 32. The projection of the output mounting hole 30c along its extension direction is the second projection range. The edge of the output mounting hole 30c includes at least two second edges 30cb. The two second edges 30cb are located on both sides of the geometric center of the second projection range and form the two parts of the edge of the output mounting hole 30c that are closest to each other. The distance between the two second edges 30cb does not exceed 12.5mm. The insulating member 40 includes a first shielding portion 41, a part of which passes through the output mounting hole 30c. The first shielding portion 41 is located between the output connector 20 and a part of the edge of the output mounting hole 30c. The minimum distance between the first shielding portion 41 and the edge of that part of the output mounting hole 30c does not exceed 12.5mm. The battery cell assembly 10 is located inside the mounting housing 50. The protective assembly 30 is located on one side of the mounting housing 50 along the first direction. The external mounting hole 30b includes a first through hole 30bc, which is located on the side of the mounting space 30a away from the mounting housing 50 along the first direction. The external mounting hole 30b includes a second through hole 30bd, which is located on one side of the mounting space 30a along a second direction, where the first direction intersects the second direction.The second through hole 30bd is spaced apart from the mounting shell 50. The outer surface of the protective component 30 is provided with a partition groove 30d, and the edge of the second through hole 30bd is spaced apart from the partition groove 30d. The battery device 100 also includes a first insulating buffer 60, at least a portion of which is disposed in the external mounting hole 30b. The first insulating buffer 60 is elastically expandable and contractible in a direction perpendicular to the extension direction of the external mounting hole 30b. The protective assembly 30 includes a first housing 33 and a second housing 34. The first housing 33 has a mounting cavity 33a, and one side of the mounting cavity 33a is open to form a mounting opening 33aa. The first housing 33 and the second housing 34 are capable of relative movement to switch between an open state and a closed state. In the closed state, the second housing 34 covers the mounting opening 33aa to form a mounting space 30a and an external mounting hole 30b together with the first housing 33. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening 33aa, at least a portion of the projection of the mounting opening 33aa along its opening direction is located outside the projection range of the second housing 34 along the opening direction of the mounting opening 33aa. At least a portion of the fixing member 35 is located within the mounting cavity 33a and is detachably connected to the output connector 20. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening 33aa, the projection of the mounting opening 33aa along its opening direction includes a third projection range 33ab. The third projection range 33ab is circular, and its center coincides with the geometric center of the projection of the fixing member 35 along the opening direction of the mounting opening 33aa. The third projection range 33ab is located outside the projection range of the second housing 34 along the opening direction of the mounting opening 33aa, and the diameter of the third projection range 33ab is between 20 mm and 23 mm. The first housing 33 and the second housing 34 are rotatably connected.

[0202] This application embodiment also provides an electrical device, which includes any of the battery devices 100 in the foregoing embodiments, and the battery devices 100 are used as the power source for the electrical device.

[0203] Thus, using the battery device 100 in the aforementioned embodiment helps reduce the risk of operators' fingers coming into contact with the output connector 20 inside the protective component 30 during the maintenance and repair of the battery device 100.

[0204] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: Battery cell assembly; An output connector is electrically connected to the battery cell assembly; a protective assembly includes an installation space, an external mounting hole, and an output mounting hole, wherein the external mounting hole and the output mounting hole are respectively connected to the outside of the installation space and the protective assembly, a portion of the output connector is located within the installation space via the output mounting hole, and at least a portion of the edge of the external mounting hole is provided with a first protrusion protruding in a direction away from the installation space, and the output connector is used to electrically connect to an external electrical connector through the external mounting hole.

2. The battery device according to claim 1, characterized in that, The projection of the external mounting hole along the extension direction of the external mounting hole is a first projection range. The edge of the external mounting hole includes at least two first edges. The two first edges are located on both sides of the geometric center of the first projection range and form the two parts of the edge of the external mounting hole that are closest to each other. At least one of the first edges is provided with the first protrusion.

3. The battery device according to claim 2, characterized in that, Each of the first edges is provided with the first protrusion.

4. The battery device according to claim 1, characterized in that, The projection of the external mounting hole along the extension direction of the external mounting hole is the first projection range. The edge of the external mounting hole includes at least two first edges. The two first edges are located on both sides of the geometric center of the first projection range and form the two parts of the edge of the external mounting hole that are closest to each other. The distance between the two first edges does not exceed 12.5mm.

5. The battery device according to claim 1, characterized in that, The edge of the output mounting hole away from the mounting space has a second protrusion that protrudes in a direction away from the mounting space.

6. The battery device according to claim 5, characterized in that, The projection of the output mounting hole along the extension direction of the output mounting hole is the second projection range. The edge of the output mounting hole includes at least two second edges. The two second edges are located on both sides of the geometric center of the second projection range and form the two parts of the edge of the output mounting hole that are closest to each other. At least one second edge is provided with the second protrusion.

7. The battery device according to claim 5, characterized in that, The projection of the output mounting hole along the extension direction of the output mounting hole is the second projection range. The edge of the output mounting hole includes at least two second edges. The two second edges are located on both sides of the geometric center of the second projection range and form the two parts of the edge of the output mounting hole that are closest to each other. The distance between the two second edges does not exceed 12.5mm.

8. The battery device according to claim 1, characterized in that, The battery device further includes an insulating member, the insulating member including a first shielding portion, a portion of which passes through the output mounting hole.

9. The battery device according to claim 8, characterized in that, The first blocking portion is located between the output connector and a portion of the edge of the output mounting hole, and the minimum distance between the first blocking portion and the edge of that portion of the output mounting hole does not exceed 12.5 mm.

10. The battery device according to claim 1, characterized in that, The battery device further includes a mounting housing, the battery cell assembly is located inside the mounting housing, the protective assembly is located on one side of the mounting housing along a first direction, and the external mounting hole includes a first through hole, the first through hole being located on the side of the mounting space away from the mounting housing along the first direction.

11. The battery device according to claim 1, characterized in that, The battery device further includes a mounting housing, the battery cell assembly is located inside the mounting housing, the protective assembly is located on one side of the mounting housing along a first direction, and the external mounting hole includes a second through hole, the second through hole is located on one side of the mounting space along a second direction, the first direction intersects the second direction.

12. The battery device according to claim 11, characterized in that, The second through hole is spaced apart from the mounting shell, and the outer surface of the protective component is provided with a partition groove, with the edge of the second through hole spaced apart from the partition groove.

13. The battery device according to claim 1, characterized in that, The battery device further includes a first insulating buffer, at least a portion of which is disposed in the external mounting hole. The first insulating buffer is elastically expandable and contractable in a direction perpendicular to the extension direction of the external mounting hole.

14. The battery device according to any one of claims 1 to 13, characterized in that, The protective assembly includes a first housing and a second housing. The first housing has a mounting cavity, and one side of the mounting cavity is open to form a mounting opening. The first housing and the second housing are capable of relative movement to switch between an open state and a closed state. In the closed state, the second housing covers the mounting opening to form the mounting space and the external mounting hole together with the first housing. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening, at least a portion of the projection of the mounting opening along its opening direction is located outside the projection range of the second housing along the opening direction of the mounting opening.

15. The battery device according to claim 14, characterized in that, The protective assembly further includes a fixing member, at least a portion of which is located within the mounting cavity and detachably connected to the output connector. In the open state, in a projection plane perpendicular to the opening direction of the mounting opening, the projection of the mounting opening along its opening direction includes a third projection range. The third projection range is circular, and its center coincides with the geometric center of the projection of the fixing member along the opening direction of the mounting opening. The third projection range is located outside the projection range of the second housing along the opening direction of the mounting opening, and the diameter of the third projection range is between 20 mm and 23 mm.

16. The battery device according to claim 14, characterized in that, The first housing and the second housing are rotatably connected.

17. An electrical appliance, characterized in that, The electrical device includes a battery device as described in any one of claims 1 to 16, the battery device being used as a power source for the electrical device.

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