Battery device and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device and a power utilization device. The battery device comprises a box body, a battery monomer, an electric connecting piece and a connecting assembly, wherein the box body accommodates the battery monomer and the connecting assembly; a maintenance opening is formed in the box body, the connecting assembly comprises a conductive assembly, and the conductive assembly comprises a confluence piece and is electrically connected with the battery monomers to form an electrical loop; in the electrical loop, one end of each of the two electrical connecting pieces is electrically connected with the confluence piece, the other end of each of the two electrical connecting pieces is electrically connected with the battery monomer, and the confluence piece is detachably connected with the two electrical connecting pieces; the projection of the connecting assembly is located in the projection of the maintenance port, and the connecting assembly can be taken out from the maintenance port to achieve circuit breaking when the confluence piece and the electric connecting piece are in a disassembled state. According to the invention, the connection assembly can be directly taken out from the maintenance port to realize the disconnection of the electrical loop, the box body does not need to be opened, the operation steps of power failure maintenance are simplified, and the maintenance efficiency and the maintenance convenience are improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to battery devices and power-consuming devices. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] In battery-powered new energy vehicles, batteries can provide all or part of the power. In the energy storage field, batteries can be installed in energy storage boxes or directly on the user side. Battery safety protection primarily relies on electrical protection methods. However, when an electrical circuit fails, these protection measures may malfunction, necessitating high-voltage work by maintenance personnel. Therefore, providing a mechanical method to disconnect the electrical circuit is one of the industry's research and development challenges. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a battery device and an electrical device.

[0005] This application is achieved through the following technical solution.

[0006] A first aspect of this application provides a battery device, including a housing, a battery cell, electrical connectors, and a connection assembly. The housing houses the battery cell and the connection assembly. The housing has a maintenance port. The connection assembly includes a conductive component and a busbar. The conductive component is electrically connected to the battery cell to form an electrical circuit. In the electrical circuit, one end of each of the two electrical connectors is electrically connected to the busbar, and the other end is electrically connected to the battery cell. The busbar is detachably connected to the two electrical connectors. The connection assembly is projected along a preset direction onto a projection plane perpendicular to the preset direction. At least a portion of the projection of the connection assembly is located within the projection of the maintenance port. The connection assembly is configured to be able to be removed from the maintenance port to disconnect the circuit when the busbar and the electrical connector are detached.

[0007] In the technical solution of this application embodiment, the connecting component integrates electrical connection and maintenance power-off functions, eliminating the need for a separate maintenance switch structure and simplifying the overall structure of the battery device. Furthermore, the connecting component can be directly removed from the maintenance port to disconnect the circuit without opening the enclosure, improving maintenance efficiency and convenience. Simultaneously, the operation position is limited to the maintenance port, reducing the risk of electric shock to maintenance personnel from accidentally touching other high-voltage components, thus improving the safety of maintenance operations. Additionally, since the busbar and the two electrical connectors are detachably connected, stable transmission of high-voltage current is achieved, thereby improving the reliability of the electrical circuit continuity. During maintenance, simply separating the busbar from the electrical connectors is sufficient to disconnect the circuit, further enhancing the convenience of maintenance power-off and reducing maintenance costs. During maintenance, removing the busbar completely cuts off the main circuit, forming an electrical isolation gap, which complies with high-voltage maintenance safety regulations. Furthermore, since at least a portion of the projection of the connecting component is located within the projection of the maintenance port, it facilitates the installation and removal of the connecting component through the maintenance port, improving the convenience and efficiency of maintenance operations.

[0008] In some embodiments, the connection assembly includes a housing, the housing including a base and a fixing member, the fixing member being connected to the base for fixing the busbar; at least a portion of the busbar is disposed between the fixing member and the base along a predetermined direction.

[0009] In the technical solution of this application embodiment, since the busbar is at least partially disposed between the fixing member and the base, the busbar is confined within a fixed area, providing precise positioning and firm mechanical fixation for the busbar, improving the stability of the connection between the busbar and the electrical connector and the reliability of the electrical circuit conduction, as well as facilitating the integration of conductive components; and the base provides physical protection for the busbar, so that the parts that the operator's hands may touch when plugging or unplugging components are all insulated shells, reducing the probability of maintenance personnel accidentally touching the busbar during operation, and further improving operational safety.

[0010] In some embodiments, the conductive component includes a bolt, the housing includes a protective cover, a base is connected to a fixing member on one side along a predetermined direction, and an opening is formed on the other side, the protective cover closes to the opening and defines a first receiving space with the base, at least a portion of the bolt is received in the first receiving space, and the bolt connects the busbar and the electrical connector.

[0011] In the technical solution of this application embodiment, since the protective cover and the base cover together form a first accommodating space, the bolt is at least partially housed in this space. Therefore, the bolt is protected by the protective cover, which can effectively prevent dust, moisture, foreign objects and other substances from corroding the bolt, making the connection between the bus and the electrical connector more secure and improving the smoothness of maintenance power-off operation. Furthermore, since the protective cover covers the base opening, the outer shell forms a complete protective structure, and the high-voltage components inside the base are shielded, further reducing the risk of maintenance personnel accidentally touching the high-voltage components and improving the overall safety of the battery device.

[0012] In some embodiments, the protective cover has a through hole and projects onto a projection surface perpendicular to the preset direction, with the projection of the bolt located within the projection of the through hole.

[0013] In the technical solution of this application embodiment, since through holes corresponding to the bolt positions are opened on the protective cover, maintenance personnel can directly use tools to tighten or loosen the bolts through the through holes without removing the protective cover. This simplifies the maintenance process, shortens the maintenance time, and improves assembly and maintenance efficiency. At the same time, the protective cover is always closed during the disassembly process, forming a shield and insulation protection for the internal high-voltage components, further improving operational safety.

[0014] In some embodiments, the projection is directed along a preset direction onto a projection surface perpendicular to the preset direction, and the projection of the connecting component is located within the projection of the maintenance port.

[0015] In the technical solution of this application embodiment, since the projection of the connecting component is located within the projection of the maintenance port, the connecting component will not be blocked by the edge of the maintenance port when it is taken out or installed from the maintenance port. This further facilitates the smooth installation and removal of the connecting component through the maintenance port, and all maintenance operations can be completed through the maintenance port, improving the convenience and efficiency of maintenance operations.

[0016] In some embodiments, the battery device includes a high-voltage box, individual battery cells connected to a first electrical connector, the high-voltage box connected to a second electrical connector, and a busbar detachably connected to the first electrical connector and the second electrical connector, respectively.

[0017] In the technical solution of this application embodiment, since the busbar is directly connected to the terminals of the battery cell and the high-voltage box, the high-voltage circuit between the two is directly connected. During maintenance, it is only necessary to separate the busbar from the terminals to disconnect the high-voltage circuit between the battery cell and the high-voltage box, which simplifies the maintenance disconnection operation of the high-voltage circuit and improves the flexibility of maintenance.

[0018] In some embodiments, the protective cover is detachably connected to the base.

[0019] In the technical solution of this application embodiment, since the protective cover and the base are detachably connected, the protective cover can be easily removed and the internal bolts can be taken out for replacement, making the installation and removal of the protective cover simple and further improving maintenance efficiency; and the detachable connection does not affect the fixed reliability of the protective cover after it is closed, and it can still provide effective protection for the internal components under normal working conditions.

[0020] In some embodiments, the protective cover and the base are snapped together, with one of them having a buckle and the other having a slot.

[0021] In the technical solution of this application embodiment, since a snap-fit ​​connection is used, no additional tools are needed for assembly and disassembly, thus improving the ease of assembly and disassembly of the protective cover. Furthermore, the snap-fit ​​connection structure is simple and easy to manufacture. Under complex working conditions such as vibration and thermal expansion and contraction, the protective cover can remain reliably fixed to the base, without loosening or falling off.

[0022] In some embodiments, the housing includes a cover and a base plate, the cover being fitted onto the base plate to form a second receiving space, the second receiving space accommodating the battery cell and the connection assembly, and the maintenance port being opened on the cover or the base plate.

[0023] In the technical solution of this application embodiment, since the maintenance port can be opened on the cover or the bottom plate, the location of the maintenance port can be flexibly selected according to the actual installation scenario and spatial layout of the battery device, which improves the design flexibility and adaptability of the battery device and expands its application range.

[0024] In some embodiments, the busbar includes a bus with a thickness in the range of 3mm-5mm.

[0025] In the technical solution of this application embodiment, since the thickness of the busbar is within a suitable range, the busbar has a sufficient conductive cross-sectional area to meet the high current transmission requirements of the high voltage circuit of the battery device, balancing cost and current carrying capacity.

[0026] The second aspect of the present application provides an electrical device, which in some embodiments includes the battery device provided in the first aspect of the present application. The battery device is used to store or provide electrical energy.

[0027] The beneficial effects of the embodiments disclosed herein include: through this application, the connecting components can be directly removed from the maintenance port to disconnect the electrical circuit without opening the enclosure, thus simplifying the power disconnection operation steps and improving maintenance efficiency and convenience; at the same time, the operation position is limited to the maintenance port, reducing the risk of electric shock to maintenance personnel from accidentally touching other high-voltage components and improving the safety of maintenance operations.

[0028] 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

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1 Structural schematic diagrams of vehicles provided for some embodiments of this application;

[0031] Figure 2 Exploded perspective view of a battery device provided for some embodiments of this application;

[0032] Figure 3 Schematic diagrams of the structure of the connecting component housing provided for some embodiments of this application;

[0033] Figure 4 Schematic diagrams of the internal structure of the base provided for some embodiments of this application;

[0034] Figure 5 Schematic diagrams of the structure of the busbar provided for some embodiments of this application;

[0035] Figure 6 Schematic diagrams of the structure of electrical connectors provided for some embodiments of this application;

[0036] Figure 7 This is a partial schematic diagram of the interior of a battery device provided for some embodiments of this application.

[0037] Explanation of reference numerals in the attached figures

[0038] 1. Battery cell; 2. High voltage box; 3. First electrical connector; 4. Second electrical connector; 10. Connecting assembly; 20. Conductive assembly; 21. Busbar; 22. Bolt; 30. Housing; 31. Base; 32. Fixing component; 33. Protective cover; 34. Through hole; 35. Buckle; 36. Slot; 100. Battery assembly; 101. Box; 102. Cover; 103. Base plate; 104. Maintenance port; 200. Controller; 300. Motor; 1000. Vehicle; S1. First receiving space; S2. Second receiving space. Detailed Implementation

[0039] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0040] 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 this document and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0041] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0042] 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.

[0043] 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.

[0044] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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.

[0045] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0046] 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.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "parallel" and "perpendicular" are both allowed to have a certain degree of tolerance and / or error, including cases of being approximately parallel and approximately perpendicular.

[0048] The following is a detailed description of this application.

[0049] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively 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 power batteries, the market demand is also constantly increasing.

[0050] In battery-powered new energy vehicles, batteries can provide all or part of the power. In the energy storage field, batteries can be installed in energy storage boxes or directly on the user side. The safety protection of battery devices mainly relies on electrical protection methods. However, when an electrical circuit fails, these protection measures may fail to function properly, posing a risk of high-voltage work for maintenance personnel. Therefore, providing a mechanical method to disconnect the electrical circuit is one of the research topics in the industry.

[0051] Through research and design, a connecting component was designed that can be detachably connected to the electrical circuit of the battery device. Under normal conditions, it serves as an electrical connector, and during maintenance, it can be removed from the electrical circuit to act as a maintenance switch, thereby physically disconnecting the electrical circuit.

[0052] Based on this design concept, this application designs a battery device, including a housing, a battery cell, electrical connectors, and a connection assembly. The housing houses the battery cell and the connection assembly. The housing has a maintenance port. The connection assembly includes a conductive component and a busbar. The conductive component is electrically connected to the battery cell to form an electrical circuit. One end of the electrical connector is electrically connected to the busbar, and the other end is electrically connected to the battery cell. The busbar is detachably connected to two of the electrical connectors. The connection assembly is configured to be removed from the maintenance port to disconnect the circuit.

[0053] Therefore, the connecting component integrates electrical connection and maintenance power-off functions, eliminating the need for a separate maintenance switch structure and simplifying the overall structure of the battery unit. Furthermore, the connecting component can be directly removed from the maintenance port to disconnect the circuit without opening the enclosure, improving maintenance efficiency and convenience. Simultaneously, the operation location is limited to the maintenance port, reducing the risk of electric shock to maintenance personnel from accidentally touching other high-voltage components, thus enhancing the safety of maintenance operations. Additionally, the detachable connection between the busbar and the two electrical connectors ensures stable transmission of high-voltage current, thereby improving the reliability of the electrical circuit continuity. During maintenance, simply separating the busbar from the electrical connectors disconnects the circuit, further enhancing the convenience of maintenance power-off and reducing maintenance costs. During maintenance, removing the busbar completely cuts off the main circuit, creating an electrical isolation gap, complying with high-voltage maintenance safety regulations. Furthermore, the connection component can be easily installed and removed through the maintenance port, improving the convenience and efficiency of maintenance operations.

[0054] 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.

[0055] Figure 1 The diagram illustrates the structure of a vehicle 1000 as provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Figure 1 As shown, a battery device 100 is installed inside the vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0056] 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.

[0057] Figure 2 This is an exploded perspective view of the battery device 100 provided in an embodiment of this application. Figure 2 As shown, the battery device 100 includes a base plate 103, a cover 102, and at least one battery cell 1. The cover 102 covers the base plate 103, thereby forming a space for accommodating the battery cell 1.

[0058] In the embodiments of this 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.

[0059] 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.

[0060] Although not illustrated, a single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. 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.

[0061] In some embodiments, the electrode assembly has tabs (not shown) that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0062] In some embodiments, the electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of wound and stacked.

[0063] 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. This application does not have any particular limitations.

[0064] 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.

[0065] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0066] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0067] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0068] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0069] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0070] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0071] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0072] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0073] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells and battery devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0074] Below, refer to Figures 3 to 7 Some embodiments of this application will be described in detail.

[0075] Figure 3Schematic diagrams of the structure of the connecting component housing provided for some embodiments of this application; Figure 4 Schematic diagrams of the internal structure of the base provided for some embodiments of this application; Figure 5 Schematic diagrams of the structure of the busbar provided for some embodiments of this application; Figure 6 Schematic diagrams of the structure of electrical connectors provided for some embodiments of this application; Figure 7 This is a partial schematic diagram of the interior of a battery device provided for some embodiments of this application.

[0076] In some embodiments of this application, a preset direction is set for ease of explanation. For ease of understanding of the embodiments of this application, as shown... Figure 3 As shown by the arrow in Figure 6, the direction of arrow Z is taken as the preset direction. Sometimes, the direction that arrow Z points to from the top of the paper is called "above", and its opposite direction is called "below".

[0077] The first aspect of this application provides a battery device 100. In the embodiments of this application, the battery device 100 includes a housing 101, a battery cell 1, electrical connectors, and a connection assembly 10. The housing 101 houses the battery cell 1 and the connection assembly 10. The housing 101 has a maintenance port 104. The connection assembly 10 includes a conductive component 20, which includes a busbar 21. The conductive component 20 is electrically connected to the battery cell 1 to form an electrical circuit. In the electrical circuit, one end of each of the two electrical connectors is electrically connected to the busbar 21, and the other end is electrically connected to the battery cell 1. The busbar 21 is detachably connected to the two electrical connectors. The connection assembly 10 is projected along a preset direction (Z) onto a projection plane perpendicular to the preset direction (Z). At least a portion of the projection of the connection assembly 10 is located within the projection of the maintenance port 104. The connection assembly 10 is configured to be removed from the maintenance port 104 in a state where the busbar 21 and the electrical connectors are detached, thereby breaking the circuit.

[0078] Optionally, the housing 101 can adopt various structures. For example, the housing 101 can be a hollow structure with one side open, and the cover 102 closes to the open side, thus forming a housing 101 with a placement space. Also optionally, the housing 101 can be constructed as a closed housing 101.

[0079] Optionally, the material of the housing 101 can be an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0080] For example, such as Figure 2 As shown, the battery device 100 includes a base plate 103, a cover 102, and a plurality of battery cells 1. The cover 102 covers the base plate 103, thereby forming a space for accommodating the battery cells 1.

[0081] It is understood that the maintenance port 104 refers to a window used for maintenance, that is, an opening that penetrates the housing 101 and connects the inside and outside of the housing 101. During maintenance, operators can access the internal structure of the battery device 100 through the maintenance port 104.

[0082] Optionally, the maintenance port 104 can be provided on the cover 102 or on the base plate 103.

[0083] For example, such as Figure 2 As shown, the maintenance port 104 is located on the cover 102.

[0084] Optionally, the shape of the maintenance port 104 can be a regular shape such as a circle, ellipse, or square, or it can be an irregular shape or a combination of regular shapes. This application embodiment does not limit this.

[0085] For example, a sealing cover can be provided to close the maintenance port 104, and the sealing cover can be opened during maintenance. Figure 2 This structure is omitted in the text.

[0086] For example, a sealing interface such as a sealing ring or sealant can be provided at the edge of the maintenance port 104.

[0087] Optionally, the high-voltage box 2 and / or the connection assembly 10 can be operated through the service port 104.

[0088] For example, the maintenance port 104 is located directly above the connecting assembly 10, and the connecting assembly 10 can be installed or removed through the maintenance port 104.

[0089] Understandably, the connecting component 10 integrates conductivity and maintenance power-off functions, and is detachably connected to the electrical circuit.

[0090] Optionally, the electrical circuit in this embodiment can be a high-voltage circuit, i.e., the main circuit, or a low-voltage circuit, such as the detection and control circuit of a battery management system (BMS).

[0091] For example, the following description assumes that the electrical circuit can be a high-voltage circuit.

[0092] It is understandable that when the connecting component 10 is connected to the electrical circuit, it is the conductive carrier of the electrical circuit; when the connecting component 10 is removed (disassembled), the electrical circuit is disconnected.

[0093] It is understandable that disassembling the connection component 10 means removing it from the battery device 100 to physically disconnect the circuit.

[0094] It should be noted that removing the component to achieve circuit breaking means removing the entire connecting assembly 10 from the maintenance port 104, thereby disconnecting the electrical connection between the conductive component 20 and the battery module, and thus cutting off the entire high-voltage circuit.

[0095] Optionally, the removal direction of the connecting component 10 can be designed to be removed along the direction of gravity (the maintenance port 104 is opened on the cover 102) or pulled out horizontally (the maintenance port 104 is opened on the side of the box 101).

[0096] Optionally, the connecting component 10 can be detachably connected to the terminals of the electrical circuit by means of snap-fit ​​connection, bolt connection 22, etc.

[0097] Optionally, the connecting component 10 can be disposed in the circuit between the battery cell 1 and the high-voltage box 2.

[0098] It is understood that the conductive component 20 is the part of the connection component 10 that realizes current transmission, and may include conductive components such as the busbar 21, for establishing electrical connections between battery cells 1 or between battery cells 1 and high-voltage components.

[0099] Optionally, in addition to the busbar 21, the conductive component 20 may also include bolts 22, conductive gaskets (such as copper gaskets or silver-plated gaskets), etc. The bolts 22 can fix the position of the busbar 21, and the conductive gaskets are placed between the busbar 21 and the terminals to fill the tiny gaps in the contact surfaces, reduce contact resistance, and improve conductivity stability.

[0100] Understandably, the electrical connection guides the electrical components 20 to establish a current transmission path between battery modules through physical contact.

[0101] Optionally, the contact method of the electrical connection can be divided into surface contact, line contact, or point contact. In this embodiment, the conductive component 20 is in contact with the plane of the terminal through surface contact. Surface contact has a large contact area and the best conductivity stability, making it suitable for high-current scenarios in high-voltage circuits.

[0102] Optionally, the electrical connector can be directly or indirectly connected to the busbar; for example, the two can be directly connected.

[0103] Optionally, the electrical connector can be directly or indirectly connected to the battery cell; for example, the two can be indirectly connected through other conductive parts or circuits.

[0104] It is understandable that the battery cell 1 is installed inside the housing 101, and multiple battery cells 1 can be connected in series and parallel to output electrical energy to the high voltage box 2.

[0105] For example, the two electrical connectors in the electrical circuit can be a first electrical connector 3 and a second electrical connector 4, respectively.

[0106] Optionally, multiple battery cells 1 are connected in series and parallel to form a module, and electrical energy is output by the first electrical connector 3. The first electrical connector 3 can be the positive or negative terminal of the module.

[0107] In the technical solution of this application embodiment, since the detachable connecting component 10 integrates the conductive component 20, and the conductive component 20 is electrically connected to the battery cell 1 to form a high-voltage electrical circuit, the electrical connection function and the maintenance power-off function are integrated. This eliminates the need for an additional independent maintenance switch structure, simplifying the overall structure of the battery device 100, reducing the number of parts, lowering assembly costs, and reducing the internal space occupancy of the housing 101. Furthermore, the connecting component 10 can be directly removed from the maintenance port 104 to disconnect the circuit without opening the housing 101, thus simplifying the maintenance power-off operation steps and improving maintenance efficiency and convenience. Simultaneously, the operation position is limited to the maintenance port 104, reducing the risk of electric shock to maintenance personnel from accidentally touching other high-voltage components and improving the safety of maintenance operations.

[0108] For example, the busbar 21, also known as a bus or busbar, is a metal sheet structure that enables current transmission between components.

[0109] Optionally, the busbar 21 can be made of pure copper, copper alloy, or aluminum. These materials have good conductivity and current carrying capacity.

[0110] Optionally, the shape of the busbar 21 can be designed as rectangular or irregular (such as bent) according to connection requirements, and the bent structure can adapt to the installation position of different components. This application embodiment does not limit this.

[0111] For example, holes may be provided on the manifold 21 for weight reduction or to facilitate the passage of bolts 22.

[0112] Optionally, the surface of the busbar 21 may be treated with anti-corrosion measures (such as tin plating or nickel plating) to prevent oxidation and corrosion from causing a decrease in conductivity during long-term use.

[0113] For example, the busbar 21 is made of copper or nickel-plated copper.

[0114] Optionally, the connection assembly 10 may also include other structures, such as a housing 30, for protecting and securing the busbar 21.

[0115] Optionally, the electrical connector is a conductive interface component that connects to the electrical circuit and is detachably connected to the busbar 21 to realize the input or output of current.

[0116] Alternatively, the electrical connector may be a strip or a wire harness.

[0117] Alternatively, the electrical connectors may be made of pure copper, copper alloy, or aluminum.

[0118] Optionally, the electrical connector can be a plate, and its shape can be flat, forked, etc. This application does not limit this aspect.

[0119] For example, the electrical connector may have a through hole 34 to allow the bolt 22 to pass through.

[0120] Optionally, the projection of the connecting component 10 may be partially or entirely within the projection of the maintenance port 104.

[0121] In the technical solution of this application embodiment, since the busbar 21 is detachably connected to the two electrical connectors, stable transmission of high-voltage current is achieved, thus improving the reliability of electrical circuit continuity. Furthermore, during maintenance, simply separating the busbar 21 from the electrical connectors is sufficient to disconnect the circuit, further enhancing the convenience of power disconnection and reducing maintenance costs. During maintenance, removing the busbar 21 completely cuts off the main circuit, forming an electrical isolation gap, which complies with high-voltage maintenance safety regulations. In the technical solution of this application embodiment, since the projection of the connecting component 10 is located within the projection of the maintenance port 104, and the connecting component 10 can be installed and removed through the maintenance port 104, the convenience and efficiency of maintenance operations are improved.

[0122] In the embodiments of this application, such as Figure 3 , Figure 4 , Figure 5 As shown, the connecting component 10 includes a housing 30, which includes a base 31 and a fixing member 32. The fixing member 32 is connected to the base 31 and is used to fix the busbar 21. At least a portion of the busbar 21 is disposed between the fixing member 32 and the base 31 along a preset direction (Z).

[0123] Understandably, the outer shell 30 is a protective structure for the connecting component 10, used to support and fix the conductive component 20, while also providing insulation protection to prevent personnel from accidentally touching the high-voltage conductive component 20.

[0124] Optionally, the housing 30 can be made of an insulating material, such as engineering plastics or glass fiber composite reinforced materials, such as PP-GF20.

[0125] Optionally, the base 31 and the fastener 32 can be an integral structure or a separate structure, connected by means of adhesive or snap-fit.

[0126] For example, the base 31 and the fixing member 32 are integrally injection molded. The integral injection molding structure has the highest strength and no assembly gaps, making it suitable for scenarios with severe vibration.

[0127] For example, the base 31, the fixing member 32, and the busbar 21 can be integrated. During the manufacturing process, the busbar 21 is placed into an injection mold to form an integrated structure, which facilitates subsequent assembly.

[0128] Alternatively, the base 31 and the fixing member 32 can be connected by means of buckle 35, bolt 22, etc.

[0129] It is understandable that the outer casing 30 supports and fixes the conductive component 20 through its own structure (base 31 and fastener 32 in this embodiment), fixes the position of the conductive component 20, and improves the reliability of electrical connection.

[0130] For example, the fastener 32 is configured as an annular or semi-annular shape, and the annular portion cooperates with the base 31 to fix the busbar 21. For example, the busbar 21 and the fastener 32 are interference-fitted to prevent the busbar 21 from disengaging.

[0131] It is understood that the preset direction (Z) refers to the reference direction for the installation of the busbar 21, the assembly of the housing 30, and the removal of the connecting assembly 10.

[0132] Optionally, the preset direction (Z) is a direction perpendicular to the plane of the maintenance port 104 (such as the direction of gravity) or a direction parallel to the plane of the maintenance port 104, such as other directions perpendicular to the direction of gravity.

[0133] It is understandable that the preset direction (Z) can be determined based on the internal space of the battery device 100 and the convenience of maintenance operations; if the maintenance port 104 is located on the top of the housing 101, the preset direction (Z) is usually the direction of gravity; if the maintenance port 104 is located on the side of the housing 101, the preset direction (Z) is usually the direction in the horizontal plane.

[0134] In the technical solution of this application embodiment, since the busbar 21 is at least partially disposed between the fixing member 32 and the base 31, the busbar 21 is confined within a fixed area, providing precise positioning and firm mechanical fixation for the busbar 21, improving the stability of the connection between the busbar 21 and the electrical connector and the reliability of the electrical circuit conduction, and facilitating the integration of the conductive component 20; and the base 31 forms physical protection for the busbar 21, so that when the operator plugs or unplugs the component, the parts that his or her hands may touch are all the insulating shell 30, reducing the probability of maintenance personnel accidentally touching the busbar 21 during operation, and further improving operational safety.

[0135] In the embodiments of this application, the conductive component 20 includes a bolt 22, the housing 30 includes a protective cover 33, and along a preset direction (Z), a fixing member 32 is connected to one side of the base 31, and an opening is formed on the other side. The protective cover 33 covers the opening and defines a first receiving space S1 with the base 31. At least a portion of the bolt 22 is housed in the first receiving space S1. The bolt 22 connects the busbar 21 and the electrical connector.

[0136] It is understandable that the base 31 is the basic load-bearing component of the outer shell 30, providing an installation base for the protective cover 33 and forming a protective space (first accommodating space S1).

[0137] For example, such as Figure 4 As shown, the base 31 can be designed as a groove, which, together with the protective cover 33, defines the first accommodating space S1.

[0138] It is understandable that the protective cover 33 is a protective component of the outer shell 30, which covers the opening of the base 31 and forms a closed first receiving space S1 with the base 31. It is used to shield high-voltage components such as bolts 22, so as to achieve insulation and protection against accidental contact.

[0139] Optionally, the protective cover 33 may be made of engineering plastic or glass fiber composite material. For example, the protective cover 33 may be made of the same material as the base 31.

[0140] Optionally, the protective cover 33 can be made of transparent engineering plastic to facilitate maintenance personnel to observe the condition of the internal bolts 22.

[0141] In this embodiment, there are no limitations on the thickness of the protective cover 33 or the distance between the protective cover 33 and the bolt 22. As long as the insulation requirements are met, it is acceptable.

[0142] Understandably, the first accommodating space S1 is the space formed after the protective cover 33 and the base 31 are closed, used to accommodate at least part of the structure of the bolt 22, while providing space for the disassembly and assembly of the bolt 22.

[0143] It is understandable that bolt 22 is made of conductive material.

[0144] Alternatively, the head of bolt 22 may be either internal hexagon or external hexagon.

[0145] In the technical solution of this application embodiment, since the protective cover 33 and the base 31 cover each other to form a first receiving space S1, the bolt 22 is at least partially housed in this space. Therefore, the bolt 22 is protected by the protective cover 33, which can effectively prevent dust, water vapor, foreign objects and other substances from corroding the bolt 22, making the connection between the bus 21 and the electrical connector more secure and improving the smoothness of maintenance power-off operation. Furthermore, since the protective cover 33 covers the opening of the base 31, the outer shell 30 forms a complete protective structure, and the high-voltage components inside the base 31 are shielded, further reducing the risk of maintenance personnel accidentally touching the high-voltage components and improving the overall safety of the battery device 100.

[0146] In the embodiments of this application, the protective cover 33 has a through hole 34, which projects along a preset direction (Z) onto a projection surface perpendicular to the preset direction (Z), and the projection of the bolt 22 is located within the projection of the through hole 34.

[0147] Understandably, the through hole 34 is an opening made on the protective cover 33, corresponding to the bolt 22, and is used to provide a channel for the tools for removing and installing the bolt 22, so that the bolt 22 can be operated without removing the protective cover 33.

[0148] Understandably, the through hole 34 can be square, rectangular, round, oval, or other shapes, allowing the tool to be easily inserted to tighten or loosen the bolt 22.

[0149] It is understandable that when the bolt 22 is projected along the preset direction (Z) onto the projection plane perpendicular to the preset direction (Z), the projection of the bolt 22 is located within the projection of the through hole 34. When the tool passes through the through hole 34, it can accurately align with the bolt 22 without being interfered with by the protective cover 33.

[0150] Optionally, the projected area of ​​the through hole 34 can be slightly larger than the projected area of ​​the bolt 22, leaving a certain operating margin to avoid the tools being unable to align due to assembly errors.

[0151] For example, such as Figure 3 , Figure 4 As shown, bolt 22 has an internal hexagonal structure, and the through hole 34 is slightly larger than the outer diameter of bolt 22 head, making it easier for the wrench to reach inside.

[0152] Understandably, the through hole 34 is larger than the bolt 22, which facilitates alignment at different angles or with slight deviations, reducing operational difficulty. The through hole 34 does not affect the overall structural strength of the protective cover 33, and can be optimized into round holes, elongated holes, etc., according to tool requirements, improving design flexibility and practicality.

[0153] In the technical solution of this application embodiment, since a through hole 34 corresponding to the position of the bolt 22 is opened on the protective cover 33, maintenance personnel can directly use tools to tighten or loosen the bolt 22 through the through hole 34 without disassembling the protective cover 33. This simplifies the maintenance process, shortens the maintenance time, and improves assembly and maintenance efficiency. At the same time, the protective cover 33 is always closed during the disassembly process, forming a shield and insulation protection for the internal high-voltage components, further improving operational safety.

[0154] In the embodiments of this application, the projection is directed along a preset direction (Z) onto a projection surface perpendicular to the preset direction (Z), and the projection of the connecting component 10 is located within the projection of the maintenance port 104.

[0155] It is understandable that the overall shape and size of the connecting component 10 match the service port 104, so that the connecting component 10 will not be blocked by the edge of the service port 104 during disassembly and assembly, and can be smoothly removed or installed through the service port 104.

[0156] It should be noted that, in this embodiment, the projected area of ​​the maintenance port 104 refers to the area enclosed by the edge projection of the maintenance port 104.

[0157] For example, the projected area of ​​the connection component 10 is smaller than the projected area of ​​the maintenance port 104.

[0158] In the technical solution of this application embodiment, since the projection of the connecting component 10 is located within the projection of the maintenance port 104, the connecting component 10 will not be blocked by the edge of the maintenance port 104 when it is taken out or put into the maintenance port 104. This facilitates the smooth installation and removal of the connecting component 10 through the maintenance port 104, and all maintenance operations can be completed through the maintenance port 104, thereby improving the convenience and efficiency of maintenance operations.

[0159] In the embodiments of this application, the battery device 100 includes a high-voltage box 2, a battery cell 1 connected to a first electrical connector 3, a high-voltage box 2 connected to a second electrical connector 4, and a busbar 21 detachably connected to the first electrical connector 3 and the second electrical connector 4 respectively.

[0160] Understandably, the high-voltage box 2 is a component in the battery device 100 that integrates high-voltage power distribution and protection functions. It typically contains components such as fuses, contactors, and relays to control the on / off state of the high-voltage circuit, distribute electrical energy, and protect the circuit safety.

[0161] It is understandable that, such as Figure 6 , Figure 7 As shown, the first electrical connector 3 is a conductive interface connected to the battery module, and the second electrical connector 4 is a conductive interface connected to the high-voltage box 2. Both are connected to the busbar 21 and together form a partial conduction path of the high-voltage circuit.

[0162] Optionally, the structures of the first electrical connector 3 and the second electrical connector 4 may be the same or different. The specific shape and structure can be adapted according to the interface type of the battery module and the high-voltage box 2, and this embodiment does not limit this.

[0163] In the technical solution of this application embodiment, since the busbar 21 is directly connected to the terminals of the battery cell 1 and the high-voltage box 2, the high-voltage circuit between the two is directly connected. During maintenance, it is only necessary to separate the busbar 21 from the terminals to disconnect the high-voltage circuit between the battery cell 1 and the high-voltage box 2, which simplifies the maintenance disconnection operation of the high-voltage circuit and improves the flexibility of maintenance.

[0164] In the embodiments of this application, the protective cover 33 is detachably connected to the base 31.

[0165] Alternatively, the detachable connection methods include snap-fit ​​connection, bolt connection, magnetic connection, etc.

[0166] In the technical solution of this application embodiment, since the protective cover 33 and the base 31 are detachably connected, the protective cover 33 can be easily disassembled and the internal bolts 22 can be removed for replacement, making the installation and disassembly of the protective cover 33 simple and further improving maintenance efficiency; and the detachable connection does not affect the fixed reliability of the protective cover 33 after it is closed, and it can still provide effective protection for the internal components under normal working conditions.

[0167] In the embodiments of this application, the protective cover 33 and the base 31 are engaged and connected, one of which is provided with a buckle 35 and the other with a slot 36.

[0168] For example, such as Figure 4 As shown, the base 31 is provided with at least one buckle 35, and the protective cover 33 is provided with a slot 36, with the slot 36 corresponding to the buckle 35 one by one.

[0169] For example, the buckle 35 and the slot 36 are interference fit, which remains reliable under vibration and thermal expansion and contraction conditions.

[0170] In the technical solution of this application embodiment, since a snap-fit ​​connection is used, no additional tools are needed for disassembly and assembly, thus improving the ease of disassembly and assembly of the protective cover 33. Furthermore, the snap-fit ​​connection structure is simple and easy to manufacture. Under complex working conditions such as vibration and thermal expansion and contraction, the protective cover 33 can remain reliably fixed to the base 31, without loosening or falling off.

[0171] In the embodiments of this application, the housing 101 includes a cover 102 and a bottom plate 103. The cover 102 covers the bottom plate 103 and forms a second accommodating space S2. The second accommodating space S2 accommodates the battery cell 1 and the connecting assembly 10. The maintenance port 104 is opened on the cover 102 or the bottom plate 103.

[0172] Optionally, the base plate 103 can be formed as a generally flat plate or as a tray with side walls and bottom walls, and the embodiments of this application do not particularly limit this.

[0173] For example, such as Figure 2 As shown, the cover 102 has a maintenance port 104.

[0174] In some other embodiments not shown, the base plate 103 may have a maintenance port 104.

[0175] In the technical solution of this application embodiment, since the maintenance port 104 can be opened on the cover 102 or the bottom plate 103, the position of the maintenance port 104 can be flexibly selected according to the actual installation scenario and spatial layout of the battery device 100, which improves the design flexibility and adaptability of the battery device 100 and expands its application range.

[0176] In the embodiments of this application, the busbar 21 includes a busbar with a thickness in the range of 3mm-5mm.

[0177] For example, the busbar contacts the terminal plane along a preset direction (Z), and the size of the busbar is its thickness.

[0178] Optionally, the thickness of the busbar can be any one of the following values, or any combination thereof: 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5.0mm.

[0179] In the technical solution of this application embodiment, since the thickness of the busbar is within a suitable range, the busbar has a sufficient conductive cross-sectional area to meet the high current transmission requirements of the high voltage circuit of the battery device 100, while taking into account both cost and current carrying capacity.

[0180] The second aspect of the present application provides an electrical device, which includes a battery device 100 provided in the first aspect of the present application. The battery device 100 is used to store or provide electrical energy.

[0181] For example, such as Figure 1 As shown, the electrical device can be a vehicle 1000, and a battery device 100 is installed inside the vehicle. The battery device 100 can be used to power the vehicle 1000, for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0182] The specific solutions of the embodiments of this application are described below with reference to the accompanying drawings.

[0183] In related technologies, battery device 100 maintenance may require opening the cover 102 of the battery device 100, disassembling the bolts 22 at the corresponding location, removing the switch plate, and then disconnecting the entire battery pack from power. A connecting assembly 10 is installed at the maintenance port 104 of the battery device 100. The two ends of the switch plate in the connecting assembly 10 are electrically connected to the battery module and high-voltage box 2 of the main circuit of the battery device 100, thereby enabling the conduction of high-voltage current. Under normal operating conditions, the connecting assembly 10 acts as an electrical bridge, enabling the switching on and off of the high-voltage circuit of the battery device 100.

[0184] In a specific embodiment, a connection component 10 designed in this solution is applied in the high-voltage circuit of the battery device 100 and can act as a maintenance switch. The connection component 10 is located at the maintenance port 104 on the upper cover of the battery device 100. The connection component 10, which is directly operated from the maintenance port 104, includes a housing 30 and a busbar 21 (i.e., a switch). The housing 30 includes a base 31, a fixing member 32, and a protective cover 33. The protective cover 33 closes the opening of the base 31 to cover the exposed electrical interface area. The protective cover 33 provides secondary insulation and mechanical protection to prevent operators from accidentally touching high-voltage components. The protective cover 33 is detachably fixed to the base 31 by a snap-fit ​​structure 35. The snap-fit ​​35 is an interference fit to ensure reliability under vibration and thermal expansion and contraction conditions.

[0185] In a specific embodiment, the fixing member 32 is connected to the outside of the base 31 and has a ring-shaped structure. The busbar 21 is embedded between the base 31 and the fixing member 32. The side of the busbar 21 near the outside of the maintenance port 104 is in close contact with the base 31, so the busbar 21 cannot be directly touched when the connecting assembly 10 is removed. The other side of the busbar 21 (the side away from the maintenance port 104) rests on the terminals protruding from the battery module and the high-voltage box 2 and is fixed with bolts 22. The head of the bolts 22 is located in the first receiving space S1.

[0186] In a specific embodiment, the protective cover 33 has a through hole 34 or window, the position of which corresponds to the bolt 22 connecting the busbar 21. During assembly or maintenance, the operator can directly install, tighten, or remove the bolt 22 through this hole without disassembling the protective cover 33. The protective cover 33 is connected to the base 31 by a snap-fit ​​35, which can maintain reliable fixation in a vibration environment and avoid accidental contact by the operator in maintenance scenarios. The protective cover 33 can be quickly installed and removed, improving maintenance flexibility, while providing additional insulation and protection against electric shock for exposed electrical parts, thus improving overall safety.

[0187] In a specific embodiment, the through hole 34 corresponds to the bolt 22, allowing the operator to tighten and loosen the bolt 22 without disassembling the protective cover 33. This effectively reduces maintenance steps, shortens repair time, improves assembly and maintenance efficiency, maintains continuous coverage of the protective cover 33, and avoids fatigue or decreased protective performance of the clip 35 due to frequent disassembly. The opening can be round or elongated, optimized according to tool requirements. This design simplifies operation steps, improves assembly and maintenance efficiency, and prevents damage to the clip 35 caused by frequent disassembly and reassembly of the protective cover 33.

[0188] In a specific embodiment, when the battery device 100 needs to be repaired or inspected, the operator only needs to loosen the bolts 22 from above the protective cover 33 and take out the connecting component 10, thereby disconnecting the busbar 21 from the electrical connectors at both ends and quickly disconnecting the entire electrical circuit.

[0189] The design of the connecting component 10 enables the busbar 21 to have stable conductivity, while the injection-molded housing 30 provides insulation and protection, improving the safety of the high-voltage connection. As a bridge component of the high-voltage circuit of the battery pack, the connecting component 10 provides reliable conduction under normal operating conditions. When maintenance is required, simply loosen the bolt 22 and pull out the connecting component 10 to physically disconnect the main circuit. The operation is more intuitive and faster, reducing the risk to maintenance personnel.

[0190] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0191] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0192] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of protection claimed in this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection claimed.

Claims

1. A battery device, characterized in that, The device includes a housing, individual battery cells, electrical connectors, and a connecting assembly. The housing contains the individual battery cells and the connecting assembly. The housing has a maintenance port. The connecting assembly includes a conductive component and a busbar. The conductive component is electrically connected to the individual battery cells to form an electrical circuit. In the electrical circuit, one end of each of the two electrical connectors is electrically connected to the busbar, and the other end is electrically connected to the individual battery cells. The busbar is detachably connected to the two electrical connectors. The projection of the connecting component is directed along a preset direction onto a projection plane perpendicular to the preset direction. At least a portion of the projection of the connecting component is located within the projection of the maintenance port. The connecting component is configured to be removed from the maintenance port to achieve circuit breaking when the busbar and the electrical connector are disassembled.

2. The battery device according to claim 1, characterized in that, The connecting assembly includes a housing, the housing includes a base and a fixing member, the fixing member is connected to the base and is used to support the busbar; along the preset direction, at least a portion of the busbar is disposed between the fixing member and the base.

3. The battery device according to claim 2, characterized in that, The conductive component includes a bolt, the housing includes a protective cover, and along the preset direction, one side of the base is connected to the fixing member, and the other side forms an opening. The protective cover covers the opening and defines a first receiving space with the base. At least a portion of the bolt is housed in the first receiving space, and the bolt connects the busbar and the electrical connector.

4. The battery device according to claim 3, characterized in that, The protective cover has a through hole, which projects onto a projection plane perpendicular to the preset direction, and the projection of the bolt is located within the projection of the through hole.

5. The battery device according to any one of claims 1 to 4, characterized in that, The projection of the connecting component is located within the projection of the maintenance port, along the preset direction onto a projection surface perpendicular to the preset direction.

6. The battery device according to any one of claims 2 to 4, characterized in that, The battery device includes a high-voltage box, the individual battery cells are connected to a first electrical connector, the high-voltage box is connected to a second electrical connector, and the busbar is detachably connected to the first electrical connector and the second electrical connector respectively.

7. The battery device according to claim 3 or 4, characterized in that, The protective cover is detachably connected to the base.

8. The battery device according to claim 7, characterized in that, The protective cover and the base are engaged and connected, with one of them having a buckle and the other having a slot.

9. The battery device according to any one of claims 1 to 4, characterized in that, The housing includes a cover and a bottom plate. The cover fits onto the bottom plate to form a second accommodating space, which accommodates the battery cell and the connecting assembly. The maintenance port is located on the cover or the bottom plate.

10. The battery device according to any one of claims 1 to 4, characterized in that, The manifold includes a busbar, the thickness of which is in the range of 3mm-5mm.

11. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 10, the battery device being used to store or provide electrical energy.

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