Battery device and maintenance method therefor, and energy storage device, energy storage system, and charging network

Abstract

A battery device (100) and a maintenance method therefor, and an energy storage device (1), an energy storage system and a charging network. The battery device (100) comprises: a case (10), the case (10) being provided with a mounting opening (11); a battery cell assembly (20) accommodated in the case (10), the battery cell assembly (20) comprising a plurality of battery cells (21) electrically connected to each other; an electrical structure (30) removably connected to the case (10) and covering the mounting opening (11); and a fuse (40), wherein the fuse (40) is electrically connected to a circuit in which the plurality of battery cells (21) are electrically connected to each other, and / or is electrically connected to a circuit with an input and an output of the electrical structure (30); the fuse (40) is arranged in the case (10) at a position corresponding to the mounting opening (11); and in the battery device (100), the mounting opening (11) is arranged on the case (10), and the fuse (40) is arranged at the mounting opening (11), such that the fuse (40) can be replaced simply by removing the electrical structure (30) and exposing the mounting opening (11).

Description

Battery devices and their maintenance methods, energy storage devices, energy storage systems and charging networks

[0001] This application claims priority to Chinese Patent Application No. 202411615080.1, filed on November 12, 2024, entitled "Battery Device and Maintenance Method Thereof, Energy Storage Device, Energy Storage System and Charging Network", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and in particular to a battery device and its maintenance method, an energy storage device, an energy storage system and a charging network. Background Technology

[0003] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0004] Currently, when repairing and replacing the internal electrical or other structures of a battery device, it is usually necessary to remove the top cover of the battery device housing. However, removing the top cover of the battery device is a rather cumbersome process, making the replacement of the internal structure of the battery device too complicated and inefficient. Summary of the Invention

[0005] In view of the above problems, this application provides a battery device and its maintenance method, an energy storage device, an energy storage system and a charging network, which can alleviate the problem of the cumbersome process of replacing the internal structure of current battery devices.

[0006] In a first aspect, embodiments of this application provide a battery device, comprising:

[0007] The enclosure includes a mounting port; a battery cell assembly housed within the enclosure, comprising multiple interconnected battery cells; an electrical structure detachably connected to the enclosure and covering the mounting port, configured to collect status information from the battery cells; and a fuse electrically connected to the circuits connecting the multiple battery cells and / or to the input / output circuits of the electrical structure, configured to disconnect the corresponding circuits; the fuse is located within the enclosure at a position corresponding to the mounting port.

[0008] In this embodiment, an installation port is provided on the enclosure, and the electrical structure is located at the installation port so that the electrical structure can be connected to other structures inside the enclosure through the installation port. At the same time, the fuse is located at the installation port and is positioned opposite the electrical structure so that the fuse can be replaced simply by removing the electrical structure and exposing the installation port, which simplifies the fuse replacement process and improves the fuse replacement efficiency.

[0009] In some embodiments, the fuse includes a base and a fusible element, the base being connected to a housing and the fusible element being detachably connected to the base; the fuse also includes a first cover, the first cover being detachably connected to the base and covering at least a portion of the fusible element.

[0010] In the technical solution of this embodiment, at least part of the molten material is covered by the first cover to reduce the risk of short circuit between the molten material and other structures inside the box, and also to reduce the risk of workers accidentally touching the molten material; the first cover is detachably connected to the base so that workers can remove the first cover and replace the molten material.

[0011] In some embodiments, the melt is disposed on the side of the base facing the mounting port; and / or at least a portion of the first cover is disposed on the side of the base facing the mounting port.

[0012] In the technical solution of this embodiment, at least a portion of the melt and / or the first cover is disposed on the side of the base facing the installation port. After the electrical structure is removed, the melt and / or the first cover directly faces the installation port, thereby making it easier for workers to disassemble and install the melt and / or the first cover.

[0013] In some embodiments, the base is provided with a first bayonet; the first cover includes a first main body and a first locking body movably connected to the first main body, the first main body covering at least a portion of the melt, and the first locking body being configured to move relative to the first main body to insert into or withdraw from the first bayonet.

[0014] The technical solution of this embodiment provides some specific structures for the detachable connection between the first cover and the base. A first slot is provided on the base, and a movable first slot is provided on the first cover, so that the first slot can enter or exit the first slot, thereby allowing the first cover to be fixed to the base or detached from the base, so as to facilitate the installation and removal of the first cover by the staff.

[0015] In some embodiments, the first main body is provided with a first elastic connecting portion, and a first card body is provided on the first connecting portion; the first card body can be inserted into the first slot under the action of the first connecting portion.

[0016] The technical solution of this embodiment provides some specific structures of the first cover. A first connecting part is provided on the first cover so that the first card body is pressed into the first slot through the first connecting part, thereby facilitating the fixing of the first cover body to the base; at the same time, the first connecting part can also be deformed to allow the first card body to exit the first slot, so as to facilitate the disassembly of the first cover body.

[0017] In some embodiments, there are at least two first connecting portions, which are respectively disposed on opposite sides of the first main body. At least a portion of the first connecting portions on both sides of the first main body can deform close to each other to allow the corresponding first card body to exit the first slot.

[0018] The technical solution of this embodiment provides some specific structures of the first cover. This setting facilitates operation by staff and deforms the first connecting part, thereby facilitating the disassembly of the first cover. At the same time, the first connecting part and the first clip located on both sides of the first main body can also fix the first cover relatively stably.

[0019] In some embodiments, the base is provided with a groove, at least a portion of the first connecting portion is accommodated in the groove and is movable relative to the groove; the first connecting portion abuts against at least one inner wall of the groove.

[0020] In the technical solution of this embodiment, the first connecting part abuts against at least one inner wall of the slide groove, so that the first connecting part is stably located in the slide groove. This allows the slide groove to both cooperate with the first connecting part to fix the first cover, and at the same time, the first connecting part can also be dislodged from the slide groove to facilitate the disassembly and installation of the first cover.

[0021] In some embodiments, the base is further provided with a first support platform; the first cover body further includes a support portion connected to the first main body portion, the support portion abutting against the first support platform; the first cover body further includes a reinforcing rib, one side of the reinforcing rib being connected to the support portion, and the other side of the reinforcing rib being connected to the first main body portion.

[0022] In this embodiment, a first support platform is provided to support the first cover, thereby enabling the first cover to be installed more stably on the base; a support portion is provided to increase the contact area between the first cover and the first support platform, thereby improving the installation stability of the first cover; and a first reinforcing rib is provided to improve the strength of the first cover.

[0023] In some embodiments, the fuse further includes a controller disposed on the first cover.

[0024] In this embodiment, the controller is located on the first cover, meaning that the controller and the fuse are both located in the same position on the battery device. This allows workers to replace both the fuse and the controller with just one disassembly of the electrical structure, further improving the efficiency of fuse replacement and maintenance. Furthermore, by placing the controller on the first cover, the worker's action of removing the first cover facilitates both the subsequent removal of the fuse and the removal of the controller, achieving two different effects with a single action, further enhancing the efficiency of fuse replacement and maintenance.

[0025] In some embodiments, the fuse further includes a second base and a second cover connected to the first cover, the second base having a receiving groove, and the second cover being detachably connected to the second base and covering the opening side of the receiving groove; the controller is housed in the receiving groove.

[0026] In this embodiment, a second support platform is provided to support the controller, and the second support platform is placed on the first cover so that the controller can be installed on the base together with the first cover, and the controller can also be removed together with the first cover, reducing the difficulty of installing and removing the controller; the second cover is provided to protect the controller.

[0027] In some embodiments, the second cover includes a second main body portion having a second latch; a second latch body is provided on the second support platform, the second latch body being configured to move relative to the second support platform to insert into or retract from the second latch.

[0028] The technical solution of this embodiment provides some specific structures of the second cover and the second support, so that the second cover can be detachably connected to the second support through the second bayonet and the second bayonet body, so as to facilitate the installation and replacement of the controller by the staff.

[0029] In some embodiments, the second support is provided with a second flexible connecting portion, and the second locking body is provided on the second connecting portion; the second locking body can be inserted into the second locking slot under the action of the second connecting portion.

[0030] In this embodiment, a second connecting part is provided on the second support platform to press the second clip body into the second slot through the second connecting part, thereby facilitating the fixing of the second cover body on the second support platform; at the same time, the second connecting part can also be deformed to allow the second clip body to exit the second slot, so as to facilitate the disassembly of the first cover body.

[0031] In some embodiments, there are at least two second latches, which are disposed on the periphery of the second main body and located on different sides of the second main body; there are multiple second latches, which are located on different sides of the second support and cooperate with different second latches.

[0032] In this embodiment, the second latch and the second latch body are located on different sides of the second cover body, so that the second cover body can be more stably connected to the second support platform through the second latch and the second latch body.

[0033] In some embodiments, the electrical structure includes a condition monitoring component.

[0034] The technical solution of this embodiment provides some specific structures of electrical structures, such that the electrical structures include status monitoring components, so that the status monitoring components can not only collect various parameter information of the battery device, but also block the fuse and facilitate the removal of the fuse.

[0035] Secondly, embodiments of this application also provide a method for repairing a battery device, applied to the battery device provided in some embodiments of the first aspect; the repair method includes: removing the electrical structure from the housing and exposing the mounting opening; repairing the fuse; installing the electrical structure back into the housing and sealing the mounting opening.

[0036] In the technical solution of this embodiment, the fuse can be repaired and replaced simply by disassembling the electrical structure, which simplifies the process of repairing and replacing the fuse and improves efficiency.

[0037] In some embodiments, the fuse includes a base and a fusible element, the base being connected to a housing and the fusible element being detachably connected to the base; the fuse also includes a first cover, the first cover being detachably connected to the base and covering at least a portion of the fusible element; the step of repairing the fuse includes: removing the first cover from the base; replacing or repairing the fusible element; and installing the first cover onto the base.

[0038] The technical solution of this embodiment provides some methods for replacing the molten material, so that workers can remove, replace, and repair the molten material.

[0039] In some embodiments, the fuse further includes a controller disposed on a base; the steps of repairing the fuse further include: disconnecting the wiring harness electrically connected to the controller; and replacing or repairing the controller.

[0040] The technical solution of this embodiment provides some methods for replacing the controller, so that staff can replace the controller.

[0041] In some embodiments, the fuse further includes a second base and a second cover, the second base being connected to the first cover, the controller being disposed on the second base, and the second cover being detachably connected to the second base and covering at least a portion of the controller; the step of repairing the fuse further includes: removing the second cover from the second base; replacing or repairing the controller; and installing the second cover on the second base.

[0042] The technical solution of this embodiment further provides some methods for replacing the controller, so that the staff can replace the controller, and at the same time the controller can be protected by the second cover.

[0043] Thirdly, embodiments of this application also provide an energy storage device, including a battery device provided in some embodiments of the first aspect, the battery device being used to store or provide electrical energy.

[0044] Fourthly, embodiments of this application also provide an energy storage system, including an energy storage device and a power conversion device provided in some embodiments of the third aspect, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0045] Fifthly, embodiments of this application also provide a charging network, including an energy storage device provided in some embodiments of the third aspect, or an energy storage system provided in some embodiments of the fourth aspect; the charging network also includes charging piles, and the energy storage device is used to provide electrical energy to the charging piles.

[0046] 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, specific embodiments of this application are given below. Attached Figure Description

[0047] 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:

[0048] Figure 1 is an exploded structural diagram of a battery device provided in some embodiments of this application;

[0049] Figure 2 is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0050] Figure 3 is a perspective view of a battery device provided in some embodiments of this application;

[0051] Figure 4 is a front view schematic diagram of a battery device provided in some embodiments of this application after removing the status monitoring component;

[0052] Figure 5 is a perspective view of a fuse provided in some embodiments of this application;

[0053] Figure 6 is an exploded structural diagram of the first cover in a fuse provided in some embodiments of this application;

[0054] Figure 7 is a perspective view of the base in a fuse provided in some embodiments of this application;

[0055] Figure 8 is a schematic flowchart of a battery device repair method provided in some embodiments of this application;

[0056] Figure 9 is a schematic flowchart of a battery device repair method provided in some embodiments of this application (II).

[0057] Figure 10 is a schematic flowchart of a battery device repair method provided in some embodiments of this application.

[0058] Figure 11 is a schematic flowchart of a battery device repair method provided in some embodiments of this application.

[0059] Figure 12 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application;

[0060] Figure 13 is a schematic diagram of the structure of a charging network provided in some embodiments of this application.

[0061] The markings in the diagram represent the following: 1. Energy storage device; 2. Power conversion device; 3. Power generation device; 4. Charging pile; 5. Connector; 100. Battery unit; 10. Housing; 11. Mounting port; 12. First housing; 13. Second housing; 20. Battery cell assembly; 21. Battery cell; 211. Housing; 212. End cap; 213. Electrode assembly; 214. Electrode terminal; 30. Electrical structure; 40. Fuse; 41. Base; 411. First latch; 412. Slide groove; 413. First support; 42. Fusible element; 43. First cover; 431. First main body; 432. First latch; 433. First connecting part; 434. Support; 435. Reinforcing rib; 44. Second support; 441. Receiving groove; 442. Second latch; 443. Second connecting part; 45. Second cover; 451. Second main body; 452. Second latch; 46. Controller. Embodiments of the present invention

[0062] 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.

[0063] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0064] 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.

[0065] 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.

[0066] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0067] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0068] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0069] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0070] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0071] A fuse is a device in a battery pack used to protect individual battery cells, circuits, or other electrical structures, providing overcurrent protection and reducing the risk of thermal runaway. For power batteries, a small overcurrent area can be incorporated into their conductive structure (e.g., battery pads) as a fuse. However, for battery packs in energy storage systems, the current is typically higher, placing more stringent requirements on the fuse. Therefore, fuses in battery packs are usually independent structural components with a larger size, requiring more space.

[0072] For battery devices used in energy storage systems, their fuses are typically located inside the electrical compartment and fixed to the beam. When a fuse is triggered, causing the fusible link to be cut off, or when the fusible link malfunctions, the fuse needs to be repaired or replaced. Currently, replacing a fuse usually requires removing the top cover of the enclosure. This top cover is typically secured with numerous rivets and screws, and also contains electrical connections. Removing the top cover involves not only removing a large number of rivets and screws but also disconnecting the electrical connections, making the process cumbersome and inefficient for fuse replacement.

[0073] Based on the above considerations, in order to alleviate the problem of the cumbersome process of replacing fuses in current battery devices, this application provides a battery device with an installation port on the casing, and an electrical structure of the battery device is connected to the casing and the installation port is closed; the fuse is placed on the side of the installation port and is opposite to the electrical structure.

[0074] In this battery device, the electrical structure can be connected to other structures inside the housing via the mounting port, as well as to other structures outside the battery device. Simultaneously, placing the fuse at the mounting port, opposite the electrical structure, allows for fuse replacement simply by disassembling the electrical structure and exposing the mounting port, simplifying the replacement process and improving efficiency. This design utilizes the housing's own structure, increasing structural efficiency, and eliminates the need for additional maintenance windows on the housing, reducing the risk of housing seal failure.

[0075] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery as an energy storage element.

[0076] For ease of explanation, the following embodiments will be described using an example of a battery device 100 applied to an energy storage device 1 according to an embodiment of this application.

[0077] Referring to Figure 1, Figure 1 is an exploded structural diagram of a battery device 100 provided in some embodiments of this application.

[0078] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 20 for providing voltage and capacity. The battery cell assembly 20 may include multiple battery cells 21, which are connected in series, parallel, or mixed connection via a busbar.

[0079] In some embodiments, the battery cell assembly 20 is typically formed by arranging a plurality of battery cells 21.

[0080] As an example, the battery cell assembly 20 can be a battery module, which is formed by arranging and fixing multiple battery cells 21 together. As an example, the battery module can be formed by bundling multiple battery cells 21 together with cable ties.

[0081] In some embodiments, the battery cell assembly 20 may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 20, the battery cell assemblies 20 being housed within the housing 10.

[0082] As an example, the battery cell assembly 20 can be a battery module, which can be housed in the housing 10 by fixing the battery module in the housing 10.

[0083] As an example, the battery cell assembly 20 can also be housed in the housing 10 by directly fixing multiple battery cells 21 to the housing 10.

[0084] As an example, the housing 10 may include a first housing 12 and a second housing 13. The first housing 12 and the second housing 13 are fastened together to form a closed space inside the housing 10 to house the battery cell assembly 20. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 12 may be a top cover or a bottom plate.

[0085] As an example, the housing 10 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 10 forms an enclosed space to house the battery cell assembly 20.

[0086] In some embodiments, the housing 10 may be part of the vehicle's chassis structure. For example, a portion of the housing 10 may be at least a portion of the vehicle's floor, or a portion of the housing 10 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0087] Referring to Figure 2, which is an exploded structural diagram of a battery cell 21 provided in some embodiments of this application, the battery cell 21 refers to the smallest unit that makes up a battery. As shown, the battery cell 21 includes a housing 211, an end cap 212, an electrode assembly 213, and other functional components.

[0088] End cap 212 refers to a component that covers the opening of housing 211 to isolate the internal environment of battery cell 21 from the external environment. The shape of end cap 212 can be adapted to the shape of housing 211 to fit it. Optionally, end cap 212 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 212 is not easily deformed under pressure and impact, giving battery cell 21 higher structural strength and improved safety performance. Functional components such as electrode terminals 214 can be provided on end cap 212. Electrode terminals 214 can be used for electrical connection with electrode assembly 213 for outputting or inputting electrical energy to battery cell 21. In some embodiments, end cap 212 can also be provided with a pressure relief structure for releasing internal pressure when the internal pressure or temperature of battery cell 21 reaches a threshold. The material of end cap 212 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 212. The insulating element can be used to isolate the electrical connection components within the housing 211 from the end cap 212 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0089] The housing 211 is a component used to cooperate with the end cap 212 to form the internal environment of the battery cell 21. This internal environment can accommodate the electrode assembly 213, electrolyte, and other components. The housing 211 and the end cap 212 can be independent components. A mounting port 11 can be provided on the housing 211, and the end cap 212 can be closed at the mounting port 11 to form the internal environment of the battery cell 21. Alternatively, the end cap 212 and the housing 211 can be integrated. Specifically, the end cap 212 and the housing 211 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 211, the end cap 212 closes the housing 211. The housing 211 can have various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the housing 211 can be determined according to the specific shape and size of the electrode assembly 213. The shell 211 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special restrictions on this.

[0090] Electrode assembly 213 is the component in the battery cell 21 where electrochemical reactions occur. The casing 211 may contain one or more electrode assemblies 213. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 213, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals 214 to form a current loop.

[0091] In a first aspect, referring to Figures 3 to 5, an embodiment of this application provides a battery device 100, including a housing 10, a battery cell assembly 20, an electrical structure 30, and a fuse 40. The housing 10 has an installation port 11; the battery cell assembly 20 is housed within the housing 10 and includes multiple interconnected battery cells 21; the electrical structure 30 is detachably connected to the housing 10 and covers the installation port 11, and is configured to collect status information of the battery cells 21; the fuse 40 is electrically connected to the circuit in which the multiple battery cells 21 are interconnected, and / or electrically connected to the input / output circuit of the electrical structure 30, and is configured to cut off the corresponding circuit; the fuse 40 is located within the housing 10 and opposite to the electrical structure 30.

[0092] The housing 10 refers to the structure in the battery device 100 that provides a fixed foundation for the battery cell 21, electrical structure 30 and fuse 40, etc.; the housing 10 can be cuboid, cylindrical or other shapes.

[0093] The housing 10 has an installation opening 11 that penetrates the housing 10 so that the internal space of the housing 10 can communicate with the space outside the housing 10. The installation opening 11 can be square, round or other shapes, and the number of installation openings 11 can be one, two or more.

[0094] A battery cell assembly 20 refers to a structure in a battery device 100 used to provide voltage and capacity. The battery device 100 may include one or more battery cell assemblies 20. A battery cell assembly 20 may include one or more battery cells, wherein a battery cell 21 refers to the smallest unit that makes up the battery device 100. When there are multiple battery cells 21, the multiple battery cells 21 may be connected in series, in parallel or in a mixed manner.

[0095] Electrical structure 30 refers to the structure in battery device 100 that plays a role in transmitting and receiving electrical energy or electrical signals. Electrical structure 30 may include the battery monitoring unit (CSC) of battery device 100, the battery management system (BMS) of battery device 100, and the input / output interface of battery device 100, etc.

[0096] The electrical structure 30 is used to collect the status information of the battery cell 21. The status information of the battery cell 21 can be temperature, voltage or other information. The electrical structure 30 can collect the status information of only one or several battery cells 21, or it can collect the status information of each battery cell 21. Based on the status information collected by the electrical structure 30, the electrical structure 30 can be directly connected to the corresponding battery cell 21, or a part of the electrical structure 30 can be extended to the side of the corresponding battery cell 21.

[0097] The electrical structure 30 is detachably connected to the enclosure 10 to facilitate installation or removal by personnel. The electrical structure 30 can be connected to the enclosure 10 by means of screws, snaps, etc. The electrical structure 30 covers the mounting opening 11, that is, when the electrical structure 30 is connected to the enclosure 10, the electrical structure 30 can cover the mounting opening 11 to separate the internal space of the enclosure 10 from the space outside the enclosure 10. At least a part of the electrical structure 30 can extend into the enclosure 10 through the mounting opening 11 to facilitate connection between the electrical structure 30 and other structures inside the enclosure 10. The part of the electrical structure 30 extending into the enclosure 10 can be an electronic component or a wire harness or other structure.

[0098] Accordingly, the main function of the mounting port 11 is to cooperate with the corresponding electrical structure 30 to fix the corresponding electrical structure 30, or to facilitate the connection between the corresponding electrical structure 30 and other structures inside the enclosure 10.

[0099] For example, electrical structure 30 is an input / output interface, and the input / output interface is set on the board, which is connected to the enclosure 10 and covers the mounting port 11; the input / output interface can be connected to other structures inside the enclosure 10 via cables, and external structures can be plugged into the input / output interface.

[0100] For example, electrical structure 30 is a cell supervision circuit (CSC), which is connected to housing 10 and covers mounting port 11. The cell supervision circuit is connected to other structures inside housing 10 (such as battery cells 21) via cables.

[0101] Fuse 40 refers to a device in battery device 100 used to protect battery cells 21, electrical structure 30, circuits or other electronic components in battery device 100, to provide overcurrent protection and reduce the risk of thermal runaway; fuse 40 is configured to cut off the corresponding circuit, and fuse 40 can disconnect and cut off the circuit when the current flowing through fuse 40 exceeds a preset threshold; fuse 40 can cut off the circuit when the current flowing through it is greater than the preset threshold, and fuse 40 can also cut off the circuit when it receives other signals; fuse 40 is located inside enclosure 10, fuse 40 can be directly connected to the inner wall or internal beam of enclosure 10, or fuse 40 can be indirectly connected to enclosure 10 through brackets or other intermediate structures.

[0102] The fuse 40 can be electrically connected in the circuit connecting multiple battery cells 21, or in the input / output circuit of the electrical structure 30. The fuse 40 can also be electrically connected in the circuit connecting the battery cells 21 and the electrical structure 30. When the fuse 40 is electrically connected in the circuit connecting multiple battery cells 21, the fuse 40 can be electrically connected in the circuit connecting only two battery cells 21, or in the circuit connecting several or all of the battery cells 21.

[0103] Understandably, the fuse 40 refers to a device electrically connected to the battery cell 21, electrical structure 30, or other circuits within the housing 10, and the fuse 40 is different from the overcurrent fusing structure inside the battery cell 21.

[0104] The fuse 40 is located inside the enclosure 10 at a position corresponding to the mounting port 11. When the electrical structure 30 is removed from the enclosure 10, the fuse 40 can be aligned with the mounting port 11. At this time, the operator can replace the fuse 40 from the mounting port 11 without disassembling the enclosure 10.

[0105] When it is necessary to replace or repair the fuse 40, the staff only needs to remove the electrical structure 30 without disassembling the entire enclosure 10. After the electrical structure 30 is removed, the mounting port 11 is exposed, and the staff can directly repair or replace the fuse 40 through the mounting port 11.

[0106] Because the battery device 100 has high requirements for the dustproof and waterproof performance of the housing 10, the number of openings on the housing 10 should not be too many. The more openings on the housing 10, the higher the risk of the housing 10 failing to seal. Accordingly, in this embodiment, the fuse 40 is located on one side of the electrical structure 30, so that the mounting port 11 is used to fix the electrical structure 30 and connect the electrical structure 30 to other structures, and also to serve as a maintenance window for the fuse 40. This reduces the number of openings on the housing 10, improves the structural utilization of the mounting port 11, and also reduces the negative impact of the mounting port 11 on the sealing performance of the housing 10.

[0107] In this embodiment, an installation port 11 is provided on the enclosure 10, and at least a portion of the electrical structure 30 installed on the enclosure 10 can extend into the enclosure 10 through the installation port 11 so that the electrical structure 30 can be connected to other structures inside the enclosure 10. At the same time, a fuse 40 is provided at the installation port 11 and is positioned opposite the electrical structure 30, so that the fuse 40 can be replaced simply by removing the electrical structure 30 and exposing the installation port 11, which simplifies the replacement process of the fuse 40 and improves the replacement efficiency of the fuse 40.

[0108] Referring to Figures 5 to 7, in some embodiments, the fuse 40 includes a base 41 and a fusible element 42, the base 41 being connected to the housing 10 and the fusible element 42 being detachably connected to the base 41; the fuse 40 also includes a first cover 43, the first cover 43 being detachably connected to the base 41 and covering at least a portion of the fusible element 42.

[0109] The base 41 refers to the structure in the fuse 40 used to provide a fixed foundation for the fuse element 42 and other structures. The base 41 can be a frame structure, or a plate-shaped, box-shaped or other shaped structure. The base 41 can be connected to the housing 10 by welding, screwing or other means. The base 41 can be directly connected to the housing 10, or indirectly connected to the housing 10 through an intermediate structure. The material of the base 41 can include metal, plastic or other materials.

[0110] The fusible element 42 refers to the structure in the fuse 40 that can be cut off. After the fusible element 42 is cut off, it can disconnect the corresponding circuit. The fusible element 42 can be connected in series in the circuit that needs to be protected so that the corresponding circuit can be directly disconnected after the fusible element 42 is cut off. The cutting off of the fusible element 42 can refer to the fusible element 42 generating high temperature and melting itself when the current exceeds the preset threshold. The cutting off of the fusible element 42 can also refer to the fusible element 42 being cut off by an external structure (such as a piston or other cutting mechanism). The fusible element 42 can be a filament, sheet, or other shape. The fusible element 42 should be made of a conductive material, and the material of the fusible element 42 can include lead, zinc, tin, copper, etc.

[0111] Since fuse 40 needs to be connected to the corresponding circuit, and fuse element 42 is used to disconnect the corresponding circuit, current should flow through fuse element 42. Fuse element 42 can be directly connected to the corresponding circuit, that is, fuse element 42 can be directly connected to the cables, contacts, or other electrical connection structures of the corresponding circuit; fuse element 42 can also be indirectly connected to the corresponding circuit, that is, base 41 is connected to the cables, contacts, or other electrical connection structures of the corresponding circuit, and fuse element 42 is electrically connected to base 41.

[0112] The fuse element 42 is detachably connected to the base 41. The fuse element 42 can be detachably connected to the base 41 by screwing, snapping or other means. After the fuse 40 is triggered, the operator can replace only the fuse element 42 so that the fuse 40 can continue to be used.

[0113] The first cover 43 refers to the structure in the fuse 40 used to protect the fusible element 42. The first cover 43 covers at least a portion of the fuse 40. The first cover 43 can completely cover the fusible element 42. In this case, the first cover 43 can cooperate with the base 41 to form a receiving space to completely cover and protect the fusible element 42. The first cover 43 can also only cover a portion of the fusible element 42. In this case, the first cover 43 can cover the critical parts or easily damaged parts of the fusible element 42. For example, the first cover 43 can cover the connection part of the electrical connection structure between the fusible element 42 and the base 41 or the corresponding circuit to reduce the negative impact of external impurities or other structures on the connection stability of the fusible element 42.

[0114] The first cover 43 can be a plate-like structure, a box-like structure with an opening on one side, or a structure of other shapes. The material of the first cover 43 can include metal, plastic, or other materials. For example, the first cover 43 can be a box-like insulating structure with an opening on one side, and the opening side is connected to the base 41 to form a receiving space and receive at least a portion of the melt 42.

[0115] The first cover 43 is detachably connected to the base 41. The first cover 43 can be detachably connected to the base 41 by screwing, snapping or other means. This arrangement facilitates the removal of the first cover 43, thereby facilitating the replacement of the melt 42 by the staff.

[0116] Since the mounting port 11 is mainly used to connect the power supply structure 30 to other structures inside the housing 10, and is subject to the sealing requirements of the housing 10, the area of ​​the mounting port 11 should not be too large; accordingly, the first cover 43 and the melt 42 are detachably connected to the base 41 to reduce the difficulty of disassembly and installation for workers.

[0117] In this embodiment, the first cover 43 covers at least a portion of the melt 42 to reduce the risk of short circuit between the melt 42 and other structures inside the housing 10, and also to reduce the risk of workers accidentally touching the melt 42; the first cover 43 is detachably connected to the base 41 so that workers can remove the first cover 43 and replace the melt 42.

[0118] Referring to Figures 4 and 5, in some embodiments, the melt 42 is disposed on the side of the base 41 facing the mounting port 11; and / or, at least a portion of the first cover 43 is disposed on the side of the base 41 facing the mounting port 11.

[0119] The molten element 42 is located on the side of the base 41 facing the mounting port 11. After the electrical structure 30 is removed, this arrangement allows the molten element 42 to directly face the outside through the mounting port 11, thus facilitating disassembly and installation by workers.

[0120] At least a portion of the first cover 43 is located on the side of the base 41 facing the mounting port 11. That is, the first cover 43 can be completely located on the side of the base 41 facing the mounting port 11, or it can be only partially located on the side of the base 41 facing the mounting port 11. After the electrical structure 30 is removed, this arrangement allows the first cover 43 to face the outside directly through the mounting port 11, thereby facilitating disassembly and installation by workers.

[0121] Since the first cover 43 covers at least a portion of the melt 42, when the melt 42 is located on the side of the base 41 facing the mounting port 11, at least a portion of the first cover 43 covering the melt 42 is located on the side of the base 41 facing the mounting port 11, so as to facilitate the removal of the first cover 43 by the operator.

[0122] For example, the first cover 43 is located on the side of the base 41 facing the mounting port 11, and the portion of the first cover 43 covering the melt 42 is located on the side of the melt 42 facing the mounting port 11.

[0123] In this embodiment, the melt 42 is placed on the side of the base 41 facing the mounting port 11. After the electrical structure 30 is removed, the melt 42 faces the mounting port 11 directly, which makes it easier for workers to disassemble and install the melt 42.

[0124] Referring to Figures 5 to 7, in some embodiments, the base 41 is provided with a first bayonet 411; the first cover 43 includes a first main body 431 and a first latch 432 movably connected to the first main body 431, the first main body 431 covers at least a portion of the melt 42, and the first latch 432 is configured to move relative to the first main body 431 to insert into or withdraw from the first bayonet 411.

[0125] The first latch 411 refers to a latching structure provided on the base 41, which is used to cooperate with the first latch 432 of the first cover 43. The first latch 411 can be a hole structure that penetrates the base 41 or a groove structure that does not penetrate the base 41. The shape of the first latch 411 can be circular, square or other shapes. The number of first latches 411 can be one, two or more.

[0126] The first main body 431 refers to the part of the first cover 43 used to cover and protect the melt 42. The first main body 431 is also used to provide a fixed base for the first card body 432 and other structures. The first main body 431 can be a plate-shaped structure, a box-shaped structure with one end open, or a structure of other shapes. The first main body 431 can cover only part of the melt 42 or completely cover the entire melt 42. The material of the first main body can include metal, plastic, or other materials.

[0127] The first clip 432 refers to the structure in the first cover 43 used to cooperate with the first latch 411 to fix the first main body 431. The first clip 432 can be a columnar structure, a plate-like structure, or a structure of other shapes. The material of the first clip 432 can include metal, plastic, or other materials. The material of the first clip 432 can be the same as or different from the material of the first main body 431.

[0128] The first card body 432 is connected to the first main body 431 and can move relative to the first main body 431, so that the first card body 432 can be inserted into the first slot 411 or withdrawn from the first slot 411; when the first card body 432 is inserted into the first slot 411, the first main body 431 can be fixed on the base 41, and when the first card body 432 is withdrawn from the first slot 411, the first main body 431 can be detached from the base 41.

[0129] When the first card body 432 is inserted into the first slot 411, in order for the first main body 431 to be fixed relatively stably, there should be no gap or the gap should be small between the first card body 432 and the inner wall of the first slot 411; for example, each side of the first card body 432 perpendicular to its direction of movement can abut against the inner wall of the corresponding first slot 411; for example, in the direction perpendicular to the direction of movement of the first card body 432, the cross-sectional shape of the first card body 432 is the same as the shape of the first slot 411.

[0130] The first card body 432 can be movably connected to the first main body 431 in various ways. The first card body 432 can be directly connected to the first main body 431; for example, a groove structure can be provided on the first main body 431, and the first card body 432 can be slidably connected within the groove structure, in which case the first card body 432 can be inserted into or removed from the first bayonet slot 411 by moving along the groove structure; for example, a guide rail structure can be provided on the first main body 431, and the first card body 432 can be slidably connected to the guide rail structure, in which case the first card body 432 can be inserted into or removed from the first bayonet slot 411 by moving along the guide rail structure. The first card body 432 can also be indirectly connected to the first main body 431; for example, the first card body 432 can be indirectly connected to the first main body 431 through an elastic structure, in which case the movement of the first card body 432 relative to the first main body 431 can cause the elastic structure to deform; for example, the first card body 432 can also be indirectly connected to the first main body 431 through a flexible structure, in which case the movement of the first card body 432 relative to the first main body 431 can cause the flexible structure to deform.

[0131] With the first cover 43 fixed to the base 41, the first clip 432 is inserted into the first slot 411. If the first cover 43 needs to be removed, the operator can remove the first clip 432 from the first slot 411, that is, move the first clip 432 towards the first main body 431, and then remove the first cover 43. If the first cover 43 needs to be installed, the operator can move the first clip 432 towards the first main body 431 and align the first clip 432 with the first slot 411, and then insert the first clip 432 into the first slot 411.

[0132] This embodiment provides a specific structure for the detachable connection between the first cover 43 and the base 41. A first latch 411 is provided on the base 41, and a movable first latch 432 is provided on the first cover 43, so that the first latch 432 can enter or exit the first latch 411, thereby allowing the first cover 43 to be fixed to the base 41 or detached from the base 41, so as to facilitate the installation and removal of the first cover 43 by the staff.

[0133] Referring to Figures 5 to 7, in some embodiments, the first main body 431 is provided with a first elastic connecting part 433, and the first card body 432 is provided on the first connecting part 433; the first card body 432 can be inserted into the first slot 411 under the action of the first connecting part 433.

[0134] The first connecting part 433 refers to the structure on the first cover 43 used to connect the first clip 432 to the first main body 431; the first connecting part 433 is an elastic structure, which can be an elastic plate, column or other structure, or a spiral structure (e.g., a spring); the number of first connecting parts 433 can be one, two or more; the material of the first connecting part 433 can include metal, plastic or other materials, and the material of the first connecting part 433 can be the same as or different from the material of the first main body 431.

[0135] One end of the first connecting part 433 is connected to the first main body part 431, and the other end of the first connecting part 433 is connected to the first card body 432, so that the first card body 432 can be indirectly connected to the first main body part 431 through the first connecting part 433. The first connecting part 433 can be connected to the first main body part 431 by welding, bonding or other means, or it can be integrally formed with the first main body part 431. The first card body 432 can be connected to the first connecting part 433 by welding, bonding or other means, or it can be integrally formed with the first connecting part 433.

[0136] The first card body 432 can be inserted into the first slot 411 under the action of the first connecting part 433. That is, when the first connecting part 433 is deformed under pressure, the force exerted on the first card body 432 is directed towards the first slot 411. Since the first connecting part 433 is located between the first card body 432 and the first main body 431, during the process of the first card body 432 moving closer to the first main body 431, the first connecting part 433 is deformed under pressure and provides a force to the first card body 432 in a direction away from the first main body 431. When the first card body 432 is opposite to the first slot 411, the force exerted on the first card body 432 by the deformation of the first connecting part 433 is directed towards the first slot 411.

[0137] When the first card body 432 is inserted into the first slot 411, the first connecting part 433 can be in a natural state. At this time, the first card body 432 is not subject to the force of the first connecting part 433. However, when the first card body 432 moves in the direction of exiting the first slot 411, the first connecting part 433 will apply a force to the first card body 432 pointing towards the first slot 411 to prevent the first card body 432 from exiting the first slot 411, so that the first cover body 43 can be fixed more stably on the base 41.

[0138] When the first card body 432 is inserted into the first slot 411, the first connecting part 433 can also be under pressure. At this time, the first connecting part 433 will apply a force to the first card body 432 pointing towards the first slot 411, so that the first card body 432 can be more stably located in the first slot 411, thereby making the first cover 43 more stably fixed on the base 41.

[0139] When the worker needs to remove the first cover 43, the worker can press the first connecting part 433 to deform it toward the first main body 431 so that the first locking body 432 can be disengaged from the first locking slot 411. When the worker needs to install the first cover 43, the worker can press the first connecting part 433 to deform it toward the first main body 431, and release the first connecting part 433 when the first locking body 432 is opposite to the first locking slot 411. At this time, the first connecting part 433 is reset and the first locking body 432 is inserted into the first locking slot 411.

[0140] This embodiment provides some specific structures of the first cover 43. A first connecting part 433 is provided on the first cover 43 so that the first clip 432 is pressed into the first slot 411 through the first connecting part 433, thereby facilitating the fixing of the first cover 43 onto the base 41. At the same time, the first connecting part 433 can also be deformed to allow the first clip 432 to exit the first slot 411, so as to facilitate the disassembly of the first cover 43.

[0141] Referring to Figures 5 to 7, in some embodiments, there are at least two first connecting portions 433, which are respectively provided on opposite sides of the first main body portion 431. At least a portion of the first connecting portions 433 on both sides of the first main body portion 431 can deform and move closer to each other so that the corresponding first card body 432 can exit the first slot 411.

[0142] The number of first connecting parts 433 is at least two, that is, the number of first connecting parts 433 can be two, three or more. Since one end of the first connecting part 433 is connected to the first card body 432, when there are multiple first connecting parts 433, the number of first card bodies 432 can also be multiple. At this time, the number of first card slots 411 can also be multiple.

[0143] When there are at least two first connecting parts 433, each first connecting part 433 is respectively provided on both sides of the first main body 431, and the first locking body 432 corresponding to each first connecting part 433 is also located on the opposite sides of the first main body 431, and the first locking slot 411 corresponding to the first locking body 432 is also provided on the opposite sides of the first main body 431; at this time, the first main body 431 can be more stably and balancedly fixed on the base 41 by the first locking body 432 and the first locking slot 411 on both sides.

[0144] Because the first connecting part 433 can drive the first locking body 432 to exit the corresponding first locking slot 411 when it deforms towards the first main body 431, that is, the first connecting part 433 has a certain deformation space relative to the first main body 431; when each of the first connecting parts 433 is located on opposite sides of the first main body 431, the first connecting parts 433 on both sides of the first main body 431 can deform and move closer to each other in the corresponding activity space, so as to drive each of the first locking bodies 432 to exit the corresponding first locking slot 411.

[0145] When the staff needs to disassemble the first cover 43, the staff can press their fingers on the first connecting parts 433 on both sides of the first main body 431, and then close their fingers inward to press the first connecting parts 433 to deform towards the first main body 431, thereby driving the first locking body 432 to exit the corresponding first locking slot 411.

[0146] When the staff needs to install the first cover 43, the staff can first press each of the first connecting parts 433 inward, and then place the first cover 43 in the corresponding position of the base 41. When each of the first clips 432 is opposite to the corresponding first slot 411, the first connecting part 433 can be released. At this time, the first connecting part 433 will be reset and drive the first clip 432 to be inserted into the first slot 411.

[0147] This embodiment provides some specific structures of the first cover 43. This setting facilitates operation by staff and allows the first connecting part 433 to deform, thereby facilitating the disassembly of the first cover 43. At the same time, the first connecting part 433 and the first clip 432 located on both sides of the first main body 431 can also fix the first cover 43 relatively stably.

[0148] Referring to Figures 5 to 7, in some embodiments, the base 41 is provided with a groove 412, at least a portion of the first connecting portion 433 is accommodated in the groove 412 and is movable relative to the groove 412; the first connecting portion 433 abuts against at least one inner wall of the groove 412.

[0149] The groove 412 refers to the groove structure provided on the base 41; in the direction perpendicular to the extension direction of the groove 412, the cross-sectional shape of the groove 412 can be square, semi-circular or other shapes; depending on the number of the first connecting parts 433, the number of grooves 412 can be one, or two or more.

[0150] When there are multiple first connecting portions 433 located on opposite sides of the first main body portion 431, there are also multiple sliding grooves 412 located on opposite sides of the first main body portion 431 respectively, so as to correspond to each first connecting portion 433.

[0151] The slide 412 is used to accommodate at least a portion of the first connecting part 433, that is, the first connecting part 433 can be partially accommodated in the slide 412, or the first connecting part 433 can be completely accommodated in the slide 412; for example, the first connecting part 433 is partially accommodated in the slide 412, at which time the worker can press the part of the first connecting part 433 located outside the slide 412 to facilitate the installation and removal of the first cover 43.

[0152] The first connecting part 433 can move relative to the slide groove 412 so that the first connecting part 433 can enter or exit the slide groove 412 to facilitate the installation or removal of the first cover 43; the first connecting part 433 can abut against at least one inner wall of the slide groove 412, at which time the inner wall of the slide groove 412 can play a role in assisting to fix the first connecting part 433, thereby playing a role in assisting to fix the first main body part 431.

[0153] Depending on the relative positions of the first connecting part 433 and the slide 412, the first bayonet 411 can be located on the inner wall of the slide 412, or the first bayonet 411 can be located at other positions of the base 41.

[0154] For example, the first slot 411 is provided on the inner wall of the slide groove 412. When the first card body 432 is inserted into the corresponding first slot 411, at least a portion of the first connecting part 433 is accommodated in the slide groove 412, and the portion of the first connecting part 433 outside the slide groove 412 is used for pressing by the staff.

[0155] In this embodiment, the first connecting part 433 abuts against at least one inner wall of the slide groove 412, so that the first connecting part 433 is relatively stably located in the slide groove 412. Thus, the slide groove 412 can both cooperate with the first connecting part 433 to fix the first cover 43, and at the same time, the first connecting part 433 can also be disengaged from the slide groove 412 to facilitate the disassembly and installation of the first cover 43.

[0156] Referring to Figures 5 to 7, in some embodiments, the base 41 is further provided with a first support 413; the first cover 43 further includes a support 434 connected to the first main body 431, the support 434 abutting against the first support 413; the first cover 43 further includes a reinforcing rib 435, one side of the reinforcing rib 435 is connected to the support 434, and the other side of the reinforcing rib 435 is connected to the first main body 431.

[0157] The first support platform 413 refers to the structure on the base 41 used to support the first cover 43. When the first cover 43 is installed on the base 41, the first support platform 413 can provide support for the first cover 43. The first support platform 413 can be a block structure, a frame structure, or other structures. The first support can be a cuboid, cylindrical, or other shaped structure. The first support is connected to the base 41. The first support platform 413 can be connected to the base 41 by welding, bonding, or other means. The first support platform 413 can also be integrally formed with the base 41. The material of the first support platform 413 can include metal, plastic, or other materials. The material of the first support platform 413 can be the same as or different from the material of the base 41.

[0158] Since the first cover 43 is used to protect the molten material 42, the molten material 42 can also be installed on the first support 413, that is, the first support 413 can also provide support for the molten material 42. For example, the first support 413 has a groove for accommodating the molten material 42. The molten material 42 is fitted into the groove. At this time, both ends of the molten material 42 abut against the first support 413. Terminals can be provided on the first support 413 to facilitate connecting the molten material 42 to the corresponding circuit.

[0159] The support portion 434 refers to the part of the first cover 43 that contacts the first support platform 413. The provision of the support portion 434 can increase the contact area between the first cover 43 and the first support platform 413, thereby improving the stability of the first cover 43 installed on the base 41. The support portion 434 can be a plate-like structure, a block-like structure, or other structures. The support portion 434 can be a circular, square, or other shaped structure. The number of support portions 434 can be one, two, or more. The support portion 434 is connected to the first main body portion 431. The support portion 434 can be connected to the first main body portion 431 by welding, bonding, or other means. The support portion 434 can also be integrally formed with the first main body portion 431. The material of the support portion 434 can include metal, plastic, or other materials. The material of the support portion 434 can be the same as or different from the material of the first main body portion 431.

[0160] When the first cover 43 is installed on the base 41, the support 434 can abut against the first platform 413, that is, the first platform 413 can provide support for the support 434; for example, in the direction of gravity, the support 434 is located above the first platform 413 and presses against the first platform 413, and the first platform 413 supports the support 434 so that the first cover 43 can be installed more stably on the base 41.

[0161] The reinforcing rib 435 refers to the structure in the first cover 43 used to improve strength. The reinforcing rib 435 can be a plate-like structure, a strip-like structure, or other structures. The shape of the reinforcing rib 435 can be rectangular, circular, or other shapes. The different sides of the reinforcing rib 435 are respectively connected to the first main body 431 and the support part 434. The reinforcing rib 435 can be connected to the first main body 431 and the support part 434 by welding, bonding, or other means. The reinforcing rib 435 can also be integrally formed with the first main body 431 and the support part 434. The material of the reinforcing rib 435 can include metal, plastic, or other materials. The material of the reinforcing rib 435 can be the same as or different from the material of the first main body 431.

[0162] The reinforcement rib 435 can increase the connection strength between the support part 434 and the first main body part 431, and also improve the strength of the first main body part 431, thereby improving the overall strength of the first cover 43 and better protecting the melt 42.

[0163] In this embodiment, a first support 413 is provided to support the first cover 43, thereby enabling the first cover 43 to be installed more stably on the base 41; a first support 434 is provided to increase the contact area between the first cover 43 and the first support 413, thereby improving the installation stability of the first cover 43; and a first reinforcing rib 435 is provided to improve the strength of the first cover 43.

[0164] Referring to Figures 5 to 7, in some embodiments, the fuse 40 further includes a controller 46 disposed on the first cover 43.

[0165] Controller 46 refers to the structure in fuse 40 used to receive external signals and control the state of fusible element 42 according to the signals. Controller 46 can control the on / off state of fusible element 42 according to the received external signals. For example, when fuse 40 includes a cutting structure, the cutting structure can cut off fusible element 42 to disconnect the circuit. The cutting structure may include a piston, ignition device, etc. In this case, controller 46 is used to control the action of the cutting structure. For example, controller 46 can be an excitation controller.

[0166] When the fuse 40 includes a controller 46, the fuse element 42 can either heat up and melt when the current flowing through it exceeds a preset threshold, or the fuse element 42 can be cut off under the control of the controller 46.

[0167] The controller 46 is located on the first cover 43. Since the first cover 43 covers at least part of the melt 42 and is used to protect the melt 42, the controller 46 is located on one side of the melt 42. At this time, the melt 42 and the controller 46 are located in close proximity. When the staff needs to repair or replace the fuse, the staff can complete the disassembly and installation of the melt 42 and the controller 46 in one place, which is more convenient.

[0168] In the current battery device 100, the relevant circuit board of the controller 46 is usually located in a different position from the fuse 42. If the fuse 40 needs to be replaced or repaired, the staff needs to disassemble the controller 46 and the fuse 42 in different positions, which is a rather cumbersome process.

[0169] Accordingly, in this embodiment, the controller 46 is located on the first cover 43, that is, the controller 46 and the fuse 42 are both located in the same position of the battery device 100, so that the staff can replace both the fuse 42 and the controller 46 by disassembling the electrical structure 30 only once, which further improves the replacement and maintenance efficiency of the fuse 40. At the same time, the controller 46 is located on the first cover 43, so that the staff's action of disassembling the first cover 43 can not only facilitate the subsequent disassembly of the fuse 42, but also achieve the effect of disassembling the controller 46. That is, the staff can achieve two different effects with one action, which further improves the replacement and maintenance efficiency of the fuse 40.

[0170] Referring to Figures 5 to 7, in some embodiments, the fuse 40 further includes a second base 44 and a second cover 45 connected to the first cover 43. The second base 44 is provided with a receiving groove 441. The second cover 45 is detachably connected to the second base 44 and covers the opening side of the receiving groove 441. The controller 46 is accommodated in the receiving groove 441.

[0171] The second support 44 refers to the structure in the fuse 40 used to support the controller 46, and the controller 46 can be installed on the second support 44. The second support 44 can be a square plate, a circular plate, a prism, a cylinder, a frustum, a cone, or other shaped structure. The second support 44 is connected to the first cover 43. The second support 44 can be connected to the first cover 43 by welding, bonding, or other means. The second support 44 can also be integrally formed with the first cover 43. The material of the second support 44 can include metal, plastic, or other materials.

[0172] In addition to accommodating the controller 46, the second support 44 can also separate the controller 46 from the melt 42. In the event that the melt 42 melts at high temperature, this arrangement can reduce the damage that the melt 42 may cause to the controller 46.

[0173] For example, in the case where the first cover 43 includes a first main body 431, the first support 413 may be connected to the first main body 431.

[0174] The receiving groove 441 refers to the groove-shaped structure provided on the second support 44. The receiving groove 441 can form a space structure with one end open on the second support 44. The receiving groove 441 is used to accommodate at least part of the controller 46. The receiving groove 441 can be a square groove structure, a circular groove structure, or a groove structure of other shapes.

[0175] The second cover 45 refers to the structure in the fuse 40 used to protect the controller 46. The second cover 45 covers the opening side of the receiving groove 441 to form an internal space on the second support 44 that is isolated from the outside. At this time, the controller 46 is housed in the internal space. Both the second cover 45 and the second support 44 can protect the controller 46.

[0176] The second cover 45 can be a plate-like structure, a box-like structure with an opening on one side, or a structure of other shapes. The material of the second cover 45 can include metal, plastic, or other materials. For example, the second cover 45 is a box-like insulating structure with an opening on one side, and the opening side is connected to the second support 44 to form an internal space isolated from the outside world and used to accommodate the controller 46.

[0177] The second cover 45 is detachably connected to the second support 44. The second cover 45 can be detachably connected to the second support 44 by screwing, snapping or other means. This arrangement facilitates the removal of the second cover 45, thereby facilitating the replacement of the controller 46 by the staff.

[0178] The second support 44 is connected to the first cover 43 so that the controller 46 can be removed at the same time as the first cover 43 is removed, simplifying the disassembly process.

[0179] If the staff needs to replace or repair the fuse 40, the staff needs to remove the first cover 43 first. During the process of removing the first cover 43, the controller 46 can also be removed at the same time.

[0180] In this embodiment, a second support 44 for supporting the controller 46 is provided and the second support 44 is placed on the first cover 43 so that the controller 46 can be installed on the base 41 together with the first cover 43, and the controller 46 can also be removed together with the first cover 43, reducing the difficulty of installing and removing the controller 46; a second cover 45 is provided to protect the controller 46.

[0181] Referring to Figures 5 to 7, in some embodiments, the second cover 45 includes a second main body 451, on which a second latch 452 is provided; the second support 44 is provided with a second latch 442, which is configured to move relative to the second support 44 to insert into or retract from the second latch 452.

[0182] The second main body 451 refers to the part of the second cover 45 used to cover and protect the controller 46. The second main body 451 is also used as a carrier for the second bayonet 452 and other structures. The second main body 451 can be a plate-shaped structure, a box-shaped structure with one end open, or other shapes. The material of the second main body can include metal, plastic, or other materials.

[0183] The second latch 452 refers to a latching structure provided on the second main body 451, which is used to cooperate with the second latch body 442. The second latch 452 can be a hole structure that penetrates the second main body 451, or a groove structure that does not penetrate the second main body 451. The shape of the second latch 452 can be circular, square, or other shapes. The number of second latches 452 can be one, or two or more.

[0184] The second clip 442 refers to the structure on the second base 44 used to cooperate with the second latch 452 to fix the second main body 451. The second clip 442 can be a columnar structure, a plate-like structure, or a structure of other shapes. The material of the second clip 442 can include metal, plastic, or other materials. The material of the second clip 442 can be the same as or different from the material on the second base 44.

[0185] The second locking body 442 is connected to the second support 44 and can move relative to the second support 44, so that the second locking body 442 can be inserted into the second locking slot 452 or withdrawn from the second locking slot 452; when the second locking body 442 is inserted into the second locking slot 452, the second main body 451 can be fixed on the second support 44; when the second locking body 442 is withdrawn from the second locking slot 452, the second main body 451 can be detached from the second support 44.

[0186] When the second card body 442 is inserted into the second slot 452, in order for the second main body 451 to be fixed relatively stably, there should be no gap or a small gap between the second card body 442 and the inner wall of the second slot 452; for example, each side of the second card body 442 perpendicular to its direction of movement can abut against the inner wall of the corresponding second slot 452; for example, in the direction perpendicular to the direction of movement of the second card body 442, the cross-sectional shape of the second card body 442 is the same as the shape of the second slot 452.

[0187] The second locking body 442 can be movably connected to the second support 44 in several ways. The second locking body 442 can be directly connected to the second support 44; for example, a groove structure can be provided on the second support 44, and the second locking body 442 can be slidably connected within the groove structure, allowing the second locking body 442 to insert into or retract from the second locking slot 452 as it moves along the groove structure; for example, a guide rail structure can be provided on the second support 44, and the second locking body 442 can be slidably connected to the guide rail structure, allowing the second locking body 442 to insert into or retract from the second locking slot 452 as it moves along the guide rail structure. The second locking body 442 can also be indirectly connected to the second support 44; for example, the second locking body 442 can be indirectly connected to the second support 44 through an elastic structure, allowing the elastic structure to deform as the second locking body 442 moves relative to the second support 44; for example, the second locking body 442 can also be indirectly connected to the second support 44 through a flexible structure, allowing the flexible structure to deform as the second locking body 442 moves relative to the second support 44.

[0188] With the second cover 45 fixed to the second support 44, the second locking body 442 is inserted into the second locking slot 452. If it is necessary to remove the second cover 45, the operator can remove the second locking body 442 from the second locking slot 452 and then remove the second cover 45. If it is necessary to install the second cover 45, the operator can move the second locking body 442 away from the second locking slot 452 and make the second locking body 442 face the second locking slot 452, and then insert the second locking body 442 into the second locking slot 452.

[0189] This embodiment provides some specific structures of the second cover 45 and the second support 44, so that the second cover 45 can be detachably connected to the second support 44 through the second bayonet 452 and the second bayonet 442, so as to facilitate the installation and replacement of the controller 46 by the staff.

[0190] Referring to Figures 5 to 7, in some embodiments, the second support 44 is provided with a second elastic connecting part 443, and the second locking body 442 is provided on the second connecting part 443; the second locking body 442 can be inserted into the second locking slot 452 under the action of the second connecting part 443.

[0191] The second connecting part 443 refers to the structure on the second support 44 used to connect the second card body 442 to the second main body part 451; the second connecting part 443 is an elastic structure, and the second connecting part 443 can be an elastic plate, column or other structure, or a spiral structure (e.g., a spring); the number of second connecting parts 443 can be one, two or more; the material of the second connecting part 443 can include metal, plastic or other materials, and the material of the second connecting part 443 can be the same as or different from the material of the second support 44.

[0192] One end of the second connecting part 443 is connected to the second base 44, and the other end of the second connecting part 443 is connected to the second clip body 442, so that the second clip body 442 can be indirectly connected to the second base 44 through the second connecting part 443. The second connecting part 443 can be connected to the second base 44 by welding, bonding or other means, or it can be integrally formed with the second base 44. The second clip body 442 can be connected to the second connecting part 443 by welding, bonding or other means, or it can be integrally formed with the second connecting part 443.

[0193] The second locking body 442 can be inserted into the second bayonet 452 under the action of the second connecting part 443. That is, when the second connecting part 443 is deformed under pressure, the force exerted on the second locking body 442 is directed towards the second bayonet 452. Since the second connecting part 443 is located between the second locking body 442 and the second support 44, during the movement of the second locking body 442 away from the second bayonet 452, the second connecting part 443 is deformed under pressure and provides a force to the second locking body 442 in the direction of the second bayonet 452. When the second locking body 442 is opposite to the second bayonet 452, the force exerted on the second locking body 442 by the deformation of the second connecting part 443 is directed towards the second bayonet 452.

[0194] When the second locking body 442 is inserted into the second locking slot 452, the second connecting part 443 can be in a natural state. At this time, the second locking body 442 is not subject to the force of the second connecting part 443. However, when the second locking body 442 moves in the direction of exiting the second locking slot 452, the second connecting part 443 will apply a force to the second locking body 442 pointing towards the second locking slot 452 to prevent the second locking body 442 from exiting the second locking slot 452, thereby allowing the second cover 45 to be fixed more stably on the second support 44.

[0195] When the second card body 442 is inserted into the second slot 452, the second connecting part 443 can also be under pressure. At this time, the second connecting part 443 will apply a force to the second card body 442 pointing towards the second slot 452, so that the second card body 442 can be more stably located in the second slot 452, thereby making the second cover 45 more stably fixed on the second support 44.

[0196] When the worker needs to remove the second cover 45, the worker can press the second connecting part 443 to deform it away from the second latch 452 so that the second latch 442 can be disengaged from the second latch 452. When the worker needs to install the second cover 45, the worker can press the second connecting part 443 to deform it away from the second latch 452, and release the second connecting part 443 when the second latch 442 is opposite to the second latch 452. At this time, the second connecting part 443 is reset and the second latch 442 is inserted into the second latch 452.

[0197] In this embodiment, a second connecting part 443 is provided on the second base 44 so that the second clip 442 is pressed into the second slot 452 through the second connecting part 443, thereby facilitating the fixing of the second cover 45 onto the second base 44; at the same time, the second connecting part 443 can also be deformed to allow the second clip 442 to exit the second slot 452, so as to facilitate the disassembly of the first cover 43.

[0198] Referring to Figures 5 to 7, in some embodiments, there are at least two second latches 452, which are located on the periphery of the second main body 451 and on different sides of the second main body 451; there are multiple second latches 442, which are located on different sides of the second support 44 and cooperate with different second latches 452.

[0199] There are at least two second card slots 452, and the number of second card slots 452 can be two, three or more; correspondingly, the number of second card bodies 442 can also be two, three or more.

[0200] At least two second latches 452 are provided on the periphery of the second main body 451 and located on different sides. Correspondingly, at least two second latches 442 are provided on the periphery of the second support 44 and located on different sides. That is, the second latches 442 are also located on different sides of the second main body 451. At this time, the second latches 442 and the second latches 452 on different sides can stably fix the second cover 45 to the second support 44, thereby improving the connection stability of the second cover 45.

[0201] In this embodiment, the second latch 452 and the second latch body 442 are located on different sides of the second cover 45, so that the second cover 45 can be more stably connected to the second support 44 through the second latch 452 and the second latch body 442.

[0202] Referring to Figures 3 and 4, in some embodiments, the electrical structure 30 is detachably connected to the housing 10.

[0203] The electrical structure 30 is detachably connected to the enclosure 10. The electrical structure 30 can be detachably connected to the enclosure 10 by screws, snaps, or other means. For example, the electrical structure 30 is connected to the enclosure 10 by bolts. Multiple bolts are provided on the periphery of the electrical structure 30, so that the electrical structure 30 can be connected to the enclosure 10 more stably, and the gap between the electrical structure 30 and the enclosure 10 can be reduced, thereby reducing the negative impact on the sealing performance of the enclosure 10.

[0204] In this embodiment, the electrical structure 30 is detachably connected to the housing 10, so that the staff can disassemble the electrical structure 30, thereby reducing the difficulty for the staff to repair and replace the fuse 40 and simplifying the process of repairing and replacing the fuse 40.

[0205] Referring to Figures 3 and 4, in some embodiments, the electrical structure 30 includes a status monitoring component.

[0206] The status monitoring component refers to the structure in the battery device 100 used to collect information from individual battery cells 21 or other electronic components. The status monitoring component can detect information such as voltage and temperature of each individual battery cell 21 and can send the collected information to the battery management unit (BMU).

[0207] In this embodiment, the electrical structure 30 includes a status monitoring component, so that the status monitoring component can not only collect various parameter information of the battery device 100, but also block the fuse 40 and facilitate the removal of the fuse 40.

[0208] In some embodiments, the battery device 100 includes a housing 10, a battery cell 21, a status monitoring component, and a fuse 40.

[0209] The housing 10 includes a first housing 12 and a second housing 13 that are mutually covered, and the battery cell 21 is housed in the housing 10.

[0210] The housing 10 has an installation port 11, and the status monitoring component is detachably connected to the housing 10. Part of the status monitoring component is installed in the installation port 11.

[0211] The fuse 40 is connected inside the housing 10 and is opposite to the status monitoring component; the fuse 40 includes a base 41, a fuse element 42, a first cover 43, a second support 44, a second cover 45 and a controller 46.

[0212] The base 41 is connected to the housing 10. The base 41 is provided with a first support 413. The first support 413 is provided with a groove. The melt 42 is accommodated in the groove and connected to the first support 413. The first support 413 is provided with a terminal block for the melt 42 to be connected to the corresponding circuit. The base 41 is also provided with two sliding grooves 412. The side walls of the two sliding grooves 412 are provided with first bayonet slots 411.

[0213] The first cover 43 includes a first main body 431, with first connecting parts 433 connected to both sides of the first main body 431, and first locking bodies 432 connected to the first connecting parts 433. The two first connecting parts 433 are respectively opposite to the two sliding grooves 412, and a portion of the first connecting parts 433 can be accommodated in the sliding grooves 412. When a portion of the first connecting part 433 is accommodated in the sliding grooves 412, the corresponding first locking body 432 is inserted into the corresponding first locking slot 411. At this time, the first cover 43 is installed on the base 41, and the first main body 431 covers a portion of the melt 42.

[0214] A second support 44 is connected to the first main body 431 of the first cover 43. A receiving groove 441 is provided on the second support 44, and the controller 46 is installed in the receiving groove 441. A second connecting part 443 is connected to the second support 44, and a second card body 442 is connected to the second connecting part 443.

[0215] The second cover 45 includes a second main body 451, on which a second slot 452 is provided, and a second connecting part 443 can be inserted into the second slot 452; when the second connecting part 443 is inserted into the second slot 452, the second cover 45 is installed on the second support 44, and the second main body 451 covers the controller 46.

[0216] Secondly, this application also provides a maintenance method for a battery device 100, which is applied to the battery device 100 provided in some embodiments of the first aspect. The maintenance method is mainly used to disassemble and install the fuse 40 in the battery device 100.

[0217] Referring to Figure 8, the repair method includes:

[0218] S510: Remove the electrical structure 30 from the enclosure 10 to expose the mounting port 11.

[0219] In this step, since the electrical structure 30 is installed on the enclosure 10 and blocks the mounting port 11, the mounting port 11 can be exposed by removing the electrical structure 30; since the fuse 40 is opposite to the electrical structure 30, after removing the electrical structure 30, the staff can directly carry out subsequent operations through the mounting port 11.

[0220] Depending on the installation method of the electrical structure 30, its disassembly can also be carried out in different ways. For example, if the electrical structure 30 is bolted to the enclosure 10, the operator only needs to remove the bolts; if the electrical structure 30 is clipped to the enclosure 10, the operator only needs to open the clips.

[0221] Understandably, during the disassembly of the electrical structure 30, it is necessary to disconnect the electrical structure 30 from other structures, such as the wiring harness connected to the electrical structure 30.

[0222] S520: Repair fuse 40.

[0223] In this step, the repair of fuse 40 can be to repair controller 46, repair fuse element 42, or replace fuse element 42 or controller 46 with a new one.

[0224] During the repair of fuse 40, the controller 46 and fuse element 42 need to be removed first to determine their status and cause of failure, and then the repair method or direct replacement can be determined.

[0225] S530: Install the electrical structure 30 into the enclosure 10 and close the mounting port 11.

[0226] In this step, after the melt 42 and controller 46 have been repaired or replaced, the staff also need to install the electrical structure 30 into the enclosure 10 and cover the installation port 11 again.

[0227] Because disassembling the enclosure 10 requires removing a large number of screws, rivets, and other structural components, and also disconnecting all electrical components 30 from the disassembled enclosure 10, involving a significant number of wire harnesses, and after repairing or replacing the fuse 40, it is necessary to reconnect the disconnected wire harnesses and reinstall the removed screws and rivets, making the process cumbersome. Therefore, in this embodiment, the repair and replacement of the fuse 40 can be achieved simply by disassembling the electrical components 30, simplifying the repair and replacement process and improving efficiency.

[0228] In some embodiments, the fuse 40 further includes a first cover 43 detachably connected to the base 41, the first cover 43 covering at least a portion of the fusible element.

[0229] Referring to Figure 9, the steps for repairing fuse 40, i.e., in S520, include:

[0230] S521: Remove the first cover 43 from the base 41.

[0231] In this step, the first cover 43 is removed from the base 41 to expose the melt 42, thereby facilitating the subsequent disassembly and installation of the melt 42.

[0232] Depending on the structure and connection method of the first cover 43, the first cover 43 can be disassembled in different ways.

[0233] For example, if the first cover 43 is fixed to the base 41 by bolts, the bolts can be removed and the first cover 43 can be taken off; if the first cover 43 is fixed to the base 41 by clips, the clips can be opened and the first cover 43 can be taken off.

[0234] For example, when the first cover 43 includes a first connecting part 433 and a first locking body 432, the base 41 is provided with a first locking slot 411. At this time, the worker can press the first connecting part 433 to deform it toward the first main body 431 so that the first locking body 432 can be disengaged from the first locking slot 411, and then the first cover 43 can be removed.

[0235] S522: Replace or repair melt 42.

[0236] After removing the first cover 43, the workers remove the molten material 42 from the base 41, inspect the condition of the molten material 42, and then repair or replace the molten material 42 directly. After the repair or replacement of the molten material 42 is completed, the molten material 42 is installed on the base 41.

[0237] S527: Install the first cover 43 onto the base 41.

[0238] After repairing or replacing the melt 42 and reinstalling the melt 42 back into the base 41, the first cover 43 is reinstalled into the base 41 to protect the melt 42.

[0239] Depending on the structure and connection method of the first cover 43, the first cover 43 can be installed in different ways.

[0240] For example, if the first cover 43 is fixed to the base 41 by bolts, the bolts can be reinstalled after the first cover 43 is put back in its original position; if the first cover 43 is fixed to the base 41 by clips, the clips can be re-fastened after the first cover 43 is put back in its original position.

[0241] For example, when the first cover 43 includes a first connecting part 433 and a first locking body 432, the base 41 is provided with a first locking slot 411. At this time, the worker can press the first connecting part 433 to deform towards the first main body 431, and release the first connecting part 433 when the first locking body 432 is opposite to the first locking slot 411. At this time, the first connecting part 433 is reset and the first locking body 432 is inserted into the first locking slot 411.

[0242] This embodiment provides some methods for replacing the melt 42, so that workers can remove, replace, and repair the melt 42.

[0243] In some embodiments, the fuse 40 further includes a controller 46 disposed on the base 41.

[0244] Referring to Figure 10, the steps for repairing fuse 40, i.e., in S520, also include:

[0245] S523: Disconnect the wiring harness that is electrically connected to controller 46.

[0246] Because the controller 46 needs to receive signals from other electronic components, a wiring harness is usually connected to the controller 46. In order to facilitate the maintenance and replacement of the controller 46, the wiring harness on the controller 46 needs to be disconnected before removing the controller 46 to disconnect the controller 46 from other electronic components. This setting can also reduce the risk of electric shock to workers and improve operational safety.

[0247] S525: Replace or repair controller 46.

[0248] After disconnecting the wiring harness of controller 46, the staff remove controller 46, inspect its condition, and then repair or replace controller 46. After repairing or replacing controller 46, controller 46 is reinstalled into fuse 40 and the wiring harness is reconnected.

[0249] This embodiment provides some methods for replacing the melt 42, so that workers can remove, replace, and repair the melt 42.

[0250] In some embodiments, the fuse 40 further includes a second base 44 and a second cover 45, the second base 44 being connected to the first cover 43, the controller 46 being disposed on the second base 44, and the second cover 45 being detachably connected to the second base 44 and covering at least a portion of the controller 46.

[0251] Referring to Figure 11, the steps for repairing fuse 40, i.e., in S520, also include:

[0252] S524: Remove the second cover 45 from the second support 44.

[0253] In this step, the second cover 45 is removed from the second support 44 to expose the controller 46, thereby facilitating the subsequent disassembly and installation of the controller 46.

[0254] Depending on the structure and connection method of the second cover 45, the second cover 45 can be disassembled in different ways.

[0255] For example, if the second cover 45 is fixed to the second support 44 by bolts, the bolts can be removed and the second cover 45 can be taken off; if the second cover 45 is fixed to the second support 44 by clips, the clips can be opened and the second cover 45 can be taken off.

[0256] For example, when the second cover 45 is provided with a second latch 452, the second support 44 is provided with a second connecting part 443 and a second latch 442. At this time, the worker can press the second connecting part 443 to deform away from the second latch 452 so that the second latch 442 can be disengaged from the second latch 452, and then the second cover 45 can be removed.

[0257] Since the second support 44 is connected to the first cover 43, step S523 can be performed after step S521 or after step S522; that is, the melt 42 can be repaired and replaced first, or the controller 46 can be repaired and replaced first.

[0258] Since the second support 44 is connected to the first cover 43, step S523 can also be performed before step S521. That is, the wiring harness connected to the controller 46 is disconnected first to reduce the interference of the wiring harness on the subsequent disassembly of the first cover 43.

[0259] S525: Replace or repair controller 46.

[0260] After removing the second cover 45, the staff removes the controller 46 from the second support 44, checks the condition of the controller 46, and then repairs or replaces the controller 46 directly. After the repair or replacement of the controller 46 is completed, the controller 46 is installed on the second support 44.

[0261] S526: Install the second cover 45 onto the second support 44.

[0262] After repairing or replacing the controller 46 and reinstalling the controller 46 back onto the second base 44, the second cover 45 is reinstalled back onto the second base 44 to protect the controller 46.

[0263] Depending on the structure and connection method of the second cover 45, the second cover 45 can be installed in different ways.

[0264] For example, if the second cover 45 is fixed to the second support 44 by bolts, the bolts can be reinstalled after the second cover 45 is put back in its original position; if the second cover 45 is fixed to the second support 44 by clips, the clips can be re-fastened after the second cover 45 is put back in its original position.

[0265] For example, when the second cover 45 is provided with a second latch 452, the second support 44 is provided with a second connecting part 443 and a second latch 442. At this time, the worker can press the second connecting part 443 to deform away from the first latch 411, and release the second connecting part 443 when the second latch 442 is opposite to the second latch 452. At this time, the second connecting part 443 is reset and the second latch 442 is inserted into the second latch 452.

[0266] This embodiment further provides some methods for replacing the controller 46, so that the controller 46 can be replaced by the staff, and at the same time the controller 46 can be protected by the second cover 45.

[0267] In some embodiments, when it is necessary to replace or repair the fuse 40 of the battery device 100, repair can be carried out according to the repair method of the battery device 100, wherein the operator can perform the following steps in sequence:

[0268] S510: Remove the electrical structure 30 from the enclosure 10 to expose the mounting port 11.

[0269] S520: Repair fuse 40.

[0270] S530: Install the electrical structure 30 into the enclosure 10 and close the mounting port 11.

[0271] In the S520 procedure, staff can also perform the following steps in sequence:

[0272] S521: Remove the first cover 43 from the base 41.

[0273] S522: Replace or repair melt 42.

[0274] S523: Disconnect the wiring harness that is electrically connected to controller 46.

[0275] S524: Remove the second cover 45 from the second support 44.

[0276] S525: Replace or repair controller 46.

[0277] S526: Install the second cover 45 onto the second support 44.

[0278] S527: Install the first cover 43 onto the base 41.

[0279] Thirdly, some embodiments of this application also provide an energy storage device 1, including a battery device 100 provided in some embodiments of the first aspect; wherein the battery device 100 is used to store or provide electrical energy.

[0280] Energy storage device 1 includes one or more battery clusters to increase the voltage and capacity of energy storage device 1. A battery cluster may include multiple battery devices 100, which are connected in series via a busbar to increase the voltage of energy storage device 1. When energy storage device 1 includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of energy storage device 1.

[0281] The energy storage device 1 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage device 1 can store electrical energy as needed and output it when appropriate. For example, the energy storage device 1 can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires the use of the energy storage device 1.

[0282] In some embodiments, the energy storage device 1 is an energy storage container or an energy storage cabinet.

[0283] In some embodiments, the energy storage device 1 may include a cabinet and one or more battery clusters, with the battery clusters housed in the cabinet.

[0284] In some embodiments, the energy storage device 1 may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0285] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 100 via piping to regulate the temperature of the individual battery cells 21.

[0286] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0287] As an example, the central control module can serve as the battery management unit for energy storage device 1, used to monitor and manage it. The central control module can monitor information such as current, voltage, power, state of charge, and temperature of energy storage device 1. For example, it can control the charging and discharging current and voltage of energy storage device 1. As an example, the central control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0288] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0289] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 1 that require electricity.

[0290] Fourthly, referring to FIG12, some embodiments of this application also provide an energy storage system, including an energy storage device 1 and a power conversion device 2 provided in some embodiments of the third aspect, wherein the power conversion device 2 is used to electrically connect a power generation device 3 and an energy storage device 1.

[0291] An energy storage system may include one or more energy storage devices 1 and a power conversion system 2 (PCS), wherein the power conversion system 2 is connected between a power generation device 3 and an energy storage device 1. The power generation device 3 generates electrical energy, which can be stored in the energy storage device 1 via the power conversion system 2. As an example, the power generation device 3 may specifically be a solar panel, a hydroelectric power generation device 3, a thermal power generation device 3, a wind power generation device 3, etc. The specific type of the power generation device 3 is not limited in this application.

[0292] Fifthly, referring to FIG13, some embodiments of this application also provide a charging network, including a charging pile 4 and an energy storage device 1 provided in some embodiments of the third aspect, or an energy storage system provided in some embodiments of the fourth aspect. The energy storage device 1 is used to provide electrical energy to the charging pile 4.

[0293] The charging pile 4 is electrically connected to the energy storage device 1, which provides power to the charging pile 4. The charging pile 4 is also electrically connected to the battery device 100 in the energy storage device 1 via a cable, and the battery device 100 can provide its stored electrical energy to the charging pile 4. The charging pile 4 has one or more connectors 5 for connecting to electrical equipment (such as vehicles) to replenish the power of the equipment.

[0294] The energy storage device 1 can be located inside the charging pile 4 (e.g., an integrated energy storage and charging unit) or outside the charging pile 4.

[0295] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, wherein, include: The housing has an installation port. A battery cell assembly is housed within the housing, the battery cell assembly comprising a plurality of interconnected battery cells; An electrical structure, detachably connected to the housing and covering the mounting port, is configured to collect status information of the individual battery cells; A fuse, which is electrically connected to a circuit in which multiple battery cells are electrically connected to each other, and / or electrically connected to an input / output circuit of the electrical structure, the fuse being configured to disconnect the corresponding circuit; The fuse is located inside the enclosure at the position corresponding to the mounting port.

2. The battery device of claim 1, wherein, The fuse includes a base and a fusible element, the base being connected to the housing, and the fusible element being detachably connected to the base; The fuse also includes a first cover, which is detachably connected to the base and covers at least a portion of the fusible element.

3. A battery device according to claim 2, wherein The melt is disposed on the side of the base facing the mounting port; and / or At least a portion of the first cover is disposed on the side of the base facing the mounting opening.

4. A battery device according to claim 2 or 3, wherein The base is provided with a first bayonet; The first cover includes a first main body and a first locking body movably connected to the first main body. The first main body covers at least a portion of the molten material, and the first locking body is configured to move relative to the first main body to insert into or withdraw from the first locking slot.

5. A battery device according to claim 4, wherein The first main body is provided with a first elastic connecting part, and the first card body is disposed on the first connecting part; The first card body can be inserted into the first bayonet under the action of the first connecting part.

6. A battery device according to claim 5, wherein There are at least two first connecting portions, which are respectively located on opposite sides of the first main body. At least a portion of the first connecting portions on both sides of the first main body can deform close to each other to allow the corresponding first card body to exit the first slot.

7. A battery device according to claim 5 or 6, wherein The base is provided with a sliding groove, and at least a portion of the first connecting part is accommodated in the sliding groove and is movable relative to the sliding groove; The first connecting portion abuts against at least one inner wall of the groove.

8. A battery device according to any one of claims 4-7, wherein, The base is also provided with a first support platform; The first cover also includes a support portion connected to the first main body, the support portion abutting against the first support platform; The first cover also includes a reinforcing rib, one side of which is connected to the support portion and the other side of which is connected to the first main body portion.

9. A battery device according to any one of claims 2-8, wherein, The fuse also includes a controller, which is located on the first cover.

10. The battery device of claim 9, wherein, The fuse also includes a second support and a second cover connected to the first cover. The second support is provided with a receiving groove, and the second cover is detachably connected to the second support and covers the opening side of the receiving groove. The controller is housed in the receiving slot.

11. A battery device according to claim 10, wherein, The second cover includes a second main body, and the second main body is provided with a second latch; The second support is provided with a second locking body, which is configured to move relative to the second support to insert into or retract from the second locking slot.

12. The battery device of claim 11, wherein, The second support is provided with a flexible second connecting part, and the second locking body is provided on the second connecting part; The second card body can be inserted into the second bayonet under the action of the second connecting part.

13. A battery device according to claim 11 or 12, wherein, There are at least two second bayonets, and the at least two second bayonets are provided on the periphery of the second main body and located on different sides of the second main body; There are multiple second card bodies, which are located on different sides of the second support and cooperate with different second slots.

14. The battery device of any one of claims 1-13, wherein, The electrical structure includes a condition monitoring component.

15. A method of repairing a battery device, wherein, Applicable to the battery device as described in any one of claims 1-14; The repair method includes: Remove the electrical structure from the enclosure to expose the mounting port; Repair the aforementioned fuse; The electrical structure is installed in the enclosure, and the installation port is sealed.

16. The method of repair of claim 15, wherein, The fuse includes a base and a fusible element, the base being connected to the housing and the fusible element being detachably connected to the base; the fuse also includes a first cover, the first cover being detachably connected to the base and covering at least a portion of the fusible element; The steps of repairing the fuse include: Remove the first cover from the base; Replace or repair the melt; The first cover is installed on the base.

17. The method of repair of claim 16, wherein, The fuse also includes a controller mounted on the base; The steps of repairing the fuse also include: Disconnect the wiring harness that is electrically connected to the controller; Replace or repair the controller.

18. The method of repair of claim 17, wherein, The fuse further includes a second base and a second cover, the second base being connected to the first cover, the controller being disposed on the second base, and the second cover being detachably connected to the second base and covering at least a portion of the controller; The steps of repairing the fuse also include: Remove the second cover from the second support platform; Replace or repair the controller; The second cover is installed on the second support.

19. An energy storage device, wherein, Includes a battery device as described in any one of claims 1-14, the battery device being used to store or provide electrical energy.

20. An energy storage system, wherein, It includes the energy storage device and the power conversion device as described in claim 19, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

21. A charging network, wherein, Includes the energy storage device as described in claim 19 or the energy storage system as described in claim 20; The charging network also includes charging piles, and the energy storage device is used to provide power to the charging piles.

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