Battery device, energy storage device, energy storage system, and charging network

Abstract

The present application is applicable to the technical field of batteries. Provided are a battery device (100), an energy storage device (1), an energy storage system and a charging network. The battery device comprises: a case (10); a battery cell assembly (20), which is accommodated in the case and comprises a plurality of battery cells (21) electrically connected to each other; and a fuse (30), which is disposed in the case and comprises a shell (31), a fuse element (32) and a controller (33), wherein the fuse element is electrically connected to a circuit in which the plurality of battery cells are electrically connected, and at least one of the fuse element and the controller is detachably connected to the shell. In the battery device provided in the embodiments of the present application, the fuse element and the controller are located at the same position or at adjacent positions, such that a worker can remove the fuse element and the controller from the same location, and the removal and installation of the fuse element and the controller can be performed by means of removing only one part of the case, thereby simplifying the maintenance and replacement process of the fuse and thus improving the efficiency of maintenance and replacement of the fuse.

Description

Battery devices, energy storage devices, energy storage systems and charging networks

[0001] This application claims priority to Chinese Patent Application No. 202422757909.3, filed on November 12, 2024, entitled “Battery Device, Energy Storage Device, Energy Storage System and Charging Network”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of battery technology, and in particular relates to a battery device, energy storage device, energy storage system and 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 fuses in battery devices, it is usually necessary to remove the fuse element and controller separately from different locations in the battery device, making the fuse replacement process too cumbersome and inefficient. Summary of the Invention

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

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

[0007] A housing; a battery cell assembly housed within the housing, the battery cell assembly comprising multiple interconnected battery cells; a fuse housed within the housing, the fuse comprising a housing, a fuse element, and a controller, the fuse element being electrically connected to a circuit in which the multiple battery cells are interconnected, the fuse element being configured to disconnect to cut off the corresponding circuit, the controller being configured to control the on / off state of the fuse element, at least one of the fuse element and the controller being detachably connected to the housing.

[0008] In this embodiment, both the fuse and the controller are mounted on the housing, so that they are located in the same or similar positions. This allows workers to disassemble the fuse and controller from the same location, and the disassembly and installation of the fuse and controller can be performed by disassembling only one part of the housing. This simplifies the maintenance and replacement process of the fuse and improves the efficiency of fuse maintenance and replacement.

[0009] In some embodiments, the housing includes a base connected to the enclosure, and the melt is connected to the base; the housing also includes a first support connected to the base, and the controller is connected to the first support.

[0010] The technical solution of this embodiment provides some specific structures for the housing, such that the housing includes a base to support and fix the melt; at the same time, the housing also includes a first support platform to support and fix the controller; this arrangement also enables the controller and the melt to be fixed in different positions on the housing, which is convenient for workers to disassemble and install, and can also reduce the negative impact that the melt may have on the controller.

[0011] In some embodiments, the housing further includes a second cover connected to the first support, and the second cover is used to cover at least a portion of the melt.

[0012] In this embodiment, a second cover is provided to cover part of the molten material, thereby protecting the molten material. The second cover is connected to the first support platform so that workers can remove the second cover simultaneously while disassembling the first support platform, simplifying the disassembly process.

[0013] In some embodiments, a receiving cavity is provided on the first support, and the controller is received in the receiving cavity; the housing also includes a first cover, which is detachably connected to the first support and covers the opening side of the receiving cavity.

[0014] The technical solution of this embodiment provides some specific structures for the outer shell, such that the outer shell includes a first cover and the controller is housed in the receiving cavity of the first support. The first cover closes to the receiving cavity, so that an internal space is formed by the first cover and the inner wall of the receiving cavity, and the controller is separated from the external space, thereby playing a role in protecting the controller. At the same time, the first cover is detachably connected to the first support to facilitate the installation and removal of the controller.

[0015] In some embodiments, the first cover includes a first main body portion, on which a first latch is provided; a first latch body is provided on the first support platform, and the first latch body is movable relative to the first support platform to insert into or retract from the first latch.

[0016] The technical solution of this embodiment provides some specific structures of the first cover. A first slot is provided on the first cover, and a first clip is correspondingly provided on the first support, so that the first clip can be inserted into the first slot to fix the first cover through the cooperation of the first clip and the first slot; the first clip can move relative to the first support so that the first clip can be removed from the first slot, thereby facilitating the disassembly and installation of the first cover.

[0017] In some embodiments, a first connecting portion with elasticity is provided on the first support, and a first locking body is provided on the first connecting portion; the first locking body can be inserted into the first locking slot under the action of the first connecting portion.

[0018] The technical solution of this embodiment provides some specific structures of the first cover, and sets a first connecting part. The first connecting part enables the first card body to move relative to the first main body, so that the first card body can be inserted into or removed from the first slot. The first connecting part can both allow the first card body to be inserted into the first slot to fix the first cover, and allow the operator to remove the first card body from the first slot by pressing the first connecting part, so as to facilitate the disassembly and installation of the first cover.

[0019] In some embodiments, there are at least two first latches, which are disposed on the periphery of the first main body and located on different sides of the first main body; there are multiple first latches, which are located on different sides of the first support and cooperate with different first latches.

[0020] In the technical solution of this embodiment, there are at least two first slots, and the at least two first slots are located on different sides of the first main body. At the same time, the first card body is set in accordance with the first slot, so that the first card body can cooperate with the first slot to fix different sides of the first main body, thereby improving the connection stability of the first cover.

[0021] In some embodiments, the first main body portion is further provided with a protrusion, which is configured to abut against the base along the mounting direction of the first cover.

[0022] In the technical solution of this embodiment, a protrusion is provided on the first main body to limit the displacement of the first cover, thereby reducing the risk of damage to the controller caused by the positional deviation of the first cover during installation, and reducing interference and collision between the first cover and the first support during installation. This can reduce the possible damage between the first cover and the first support, and also reduce the possible damage to the controller caused by the first cover during installation.

[0023] In some embodiments, a fixed column is provided on the first support platform, and at least a portion of the fixed column supports the controller.

[0024] In the technical solution of this embodiment, a fixed column is set on the first support to support the controller, thereby reducing the contact area between the controller and the first support, reducing the damage that may be caused by friction between the controller and the first support, and also providing heat dissipation space for the bottom of the controller.

[0025] In some embodiments, the controller has a fixing hole, a portion of the fixing post passes through the fixing hole, and another portion of the fixing part abuts against the controller.

[0026] The technical solution of this embodiment provides a structure for fixing the controller with some fixed columns. A fixing hole is provided on the controller, and a part of the fixing column passes through the fixing hole to limit the relative displacement of the controller, thereby fixing the controller. The other part of the fixing part supports the controller to reduce the contact between the controller and the inner wall of the receiving cavity.

[0027] In some embodiments, the first cover body has a fixing groove on the side facing the first support platform that is opposite to the fixing post, and the portion of the fixing post that passes through the fixing hole is inserted into the fixing groove.

[0028] In the technical solution of this embodiment, a fixing groove is provided on the first cover body opposite to the fixing post, so that the fixing post can be inserted into the fixing groove. At this time, the fixing post can also play a role in guiding and assisting in determining the position of the first cover body during the installation process. At the same time, the fixing post can also play a role in restricting the displacement of the first cover body, so that the first cover body can be more stably connected to the first support platform.

[0029] In some embodiments, a second bayonet is provided on the base; a second bayonet body is movably connected to the first support, and the second bayonet body is movable relative to the first support to insert into or retract from the second bayonet.

[0030] In this embodiment, a second locking body is provided on the first support platform, and a second locking slot is provided on the base, so that the second locking body can be inserted into the second locking slot, thereby fixing the first support platform on the base through the cooperation of the second locking body and the second locking slot; the second locking body is movable relative to the first support platform, so that the second locking body can be disengaged from the second locking slot, so as to facilitate the disassembly and installation of the first support.

[0031] In some embodiments, a second flexible connecting portion is provided on the first support, and a 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.

[0032] The technical solution of this embodiment provides some specific structures of the first support, and sets a second connecting part, through which the second clamping body can move relative to the first support, so that the second clamping body can be inserted into or removed from the second bayonet; the second connecting part can both allow the second clamping body to be inserted into the second bayonet to fix the first support, and at the same time, the operator can also remove the second clamping body from the second bayonet by pressing the second connecting part, so as to facilitate the disassembly and installation of the first support.

[0033] In some embodiments, there are at least two second connecting portions, which are respectively disposed on opposite sides of the first support. At least a portion of the second connecting portions on both sides of the first support can deform and move closer to each other so that the corresponding second locking body can be disengaged from the second locking slot.

[0034] In the technical solution of this embodiment, the number of second connecting parts is at least two, and the at least two second connecting parts are located at least on opposite sides of the first support. At the same time, the second locking body and the second locking port are correspondingly arranged so that the second locking body can cooperate with the second port to fix different sides of the first support, thereby improving the connection stability of the first support.

[0035] In some embodiments, the base is provided with a groove, at least a portion of the second connecting portion is slidably accommodated in the groove and is movable relative to the groove; the second connecting portion abuts against at least one inner wall of the groove.

[0036] In this embodiment, a groove is provided on the base to accommodate at least a portion of the second connecting part, thereby enabling the inner wall of the groove to fix and support the first connecting part, and the inner wall of the groove and the second connecting part to support the first support platform, thereby improving the stability of the first support platform.

[0037] In some embodiments, the housing is provided with a maintenance port, and a fuse is located inside the housing at a position corresponding to the maintenance port; the battery device also includes a detachable shielding structure connected to the housing, the shielding structure covering the maintenance port.

[0038] In this embodiment, a maintenance port is provided on the housing, and the fuse is positioned opposite the maintenance port. This allows the fuse to be replaced simply by removing the shielding structure and exposing the maintenance port, simplifying the fuse replacement process and improving the fuse replacement efficiency.

[0039] Secondly, 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.

[0040] Thirdly, 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 second aspect, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0041] Fourthly, embodiments of this application also provide a charging network, including an energy storage device provided in some embodiments of the second aspect, or an energy storage system provided in some embodiments of the third aspect; the charging network also includes charging piles, and the energy storage device is used to provide electrical energy to the charging piles. Attached Figure Description

[0042] 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:

[0043] Figure 1 is an exploded view of a battery device provided in some embodiments of this application;

[0044] Figure 2 is an exploded view of a single battery cell provided in some embodiments of this application;

[0045] Figure 3 is a perspective view of a fuse provided in some embodiments of this application;

[0046] Figure 4 is an exploded view of a fuse provided in some embodiments of this application;

[0047] Figure 5 is a perspective view of the first cover provided in some embodiments of this application;

[0048] Figure 6 is a perspective view of the base provided in some embodiments of this application;

[0049] Figure 7 is a perspective view of a battery device provided in some embodiments of this application;

[0050] Figure 8 is a front view of a battery device provided in some embodiments of this application after the obstruction structure has been removed;

[0051] Figure 9 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application;

[0052] Figure 10 is a schematic diagram of the structure of a charging network provided in some embodiments of this application.

[0053] 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. First housing; 12. Second housing; 13. Maintenance port; 20. Battery cell assembly; 21. Battery cell; 211. Housing; 212. End plate; 213. Electrode assembly; 214. Electrode terminal; 30. Fuse; 31. Housing; 311. Base; 3111. Second bayonet; 3112. Slide groove; 312. First support; 3121. Receiving cavity; 3122. First locking body; 3123. First connecting part; 3124. Fixing post; 3125. Second locking body; 3126. Second connecting part; 313. Second cover; 3131. First main body; 3132. First bayonet; 3133. Protrusion; 3134. Fixing groove; 314. Second cover; 32. Fusible element; 33. Controller; 331. Fixing hole; 40. Shielding structure. Embodiments of the present invention

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0059] 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).

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] For battery devices used in energy storage systems, the fuse element is usually located inside the electrical compartment and fixed to the beam, while the controller is usually located in a different position than the fuse element.

[0065] In cases where a fuse trips, causing the fuse element to disconnect or malfunction, the fuse element needs to be repaired or replaced, and the status of the controller needs to be checked. However, in current battery devices, the controller and fuse element are usually not in the same location and are quite far apart. Therefore, the inspection or repair of the fuse currently usually requires removing the fuse element and controller from different locations in the battery device, as well as removing other structures from different locations in the battery device, which is a rather cumbersome process.

[0066] Based on the above considerations, in order to solve the problem of the cumbersome process of replacing fuses in current battery devices, this application provides a battery device in which the fuse housing is connected to the housing and located inside the housing, the controller and the fuse element are both connected to the housing, and the fuse element and the controller are detachably connected to the housing.

[0067] In this battery device, the fuse and controller are both located on the outer casing, meaning they are in the same or nearby positions. This allows workers to remove the fuse and controller from the same location, and only one part of the casing needs to be removed for disassembly and installation. This simplifies the fuse repair and replacement process and improves its efficiency. Furthermore, the detachable connection of both the fuse and controller to the outer casing facilitates installation and removal, further simplifying the fuse repair and replacement process and increasing efficiency.

[0068] 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.

[0069] 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.

[0070] Referring to Figure 1, Figure 1 is an exploded structural diagram of a battery device 100 provided in some embodiments of this application.

[0071] The battery device 100 mentioned in the embodiments of this application may include one or more battery assemblies for providing voltage and capacity. The battery assembly may include multiple battery cells 21, which are connected in series, parallel, or mixed connection via a busbar.

[0072] In some embodiments, the battery cell assembly is typically formed by arranging multiple battery cells 21.

[0073] As an example, the battery assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 21 together to form an independent module. As an example, the battery module can also be formed by bundling multiple battery cells 21 together with cable ties.

[0074] In some embodiments, the battery assembly may be a battery pack, which includes a housing 10 and one or more battery assemblies housed within the housing 10.

[0075] As an example, the battery assembly can be a battery module, which can be housed in the housing 10 by fixing the battery module in the housing 10.

[0076] As an example, the battery assembly can also be housed in the housing 10 by directly fixing multiple battery cells 21 to the housing 10.

[0077] As an example, the housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fastened together to form a closed space inside the housing 10 for housing the battery assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 11 may be a top cover or a bottom plate.

[0078] 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 assembly.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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 maintenance port can be provided on the housing 211, and the end cap 212 can be used to close the maintenance port 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.

[0083] 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.

[0084] In a first aspect, referring to Figures 4, 5, and 8, an embodiment of this application provides a battery device 100, including a housing 10, a battery cell assembly 20, and a fuse 30. The battery cell assembly 20 is housed within the housing 10 and includes multiple interconnected battery cells 21. The fuse 30 is disposed within the housing 10 and includes a housing 31, a fuse element 32, and a controller 33. The fuse element 32 is electrically connected to a circuit in which the multiple battery cells 21 are interconnected, and is configured to disconnect to cut off the corresponding circuit. The controller 33 is configured to control the on / off state of the fuse element 32. At least one of the fuse element 32 and the controller 33 is detachably connected to the housing 31.

[0085] The housing 10 refers to the structure in the battery device 100 that provides a fixed foundation for the battery cell 21, electrical structure and fuse 30 and other structures; the housing 10 can be cuboid, cylindrical or other shapes.

[0086] 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.

[0087] The fuse 30 refers to a device in the battery device 100 used to protect the battery cells 21, circuits or other electronic components in the battery device 100, in order to provide overcurrent protection and reduce the risk of thermal runaway. When the fuse 30 is electrically connected to the battery cells 21, the fuse 30 can be electrically connected to two or more battery cells 21, or the fuse 30 can be electrically connected to all battery cells 21.

[0088] When the current flowing through the fuse 30 exceeds a preset threshold, the fuse 30 can disconnect and cut off the circuit; the fuse 30 can cut off the circuit when the current flowing through it is greater than the preset threshold, and the fuse 30 can also cut off the circuit when it receives other signals; the fuse 30 is located inside the enclosure 10, and the fuse 30 can be directly connected to the inner wall or internal beam of the enclosure 10, or the fuse 30 can be indirectly connected to the enclosure 10 through a bracket or other intermediate structure.

[0089] The outer casing 31 refers to the supporting structure of the fuse 30. The outer casing 31 is used to provide a fixed foundation for the fuse element 32, controller 33 and other structures of the fuse 30. The outer casing 31 can also provide protection for the fuse element 32, controller 33 and other structures. The outer casing 31 can be a frame structure, or a plate-shaped, box-shaped or other shaped structure. The outer casing 31 is located inside the housing 10. The outer casing 31 can be directly connected to the housing 10, or it can be indirectly connected to the housing 10 through an intermediate structure. The outer casing 31 can be connected to the housing 10 by welding, screwing or other means. The material of the outer casing 31 can include metal, plastic or other materials.

[0090] The fusible element 32 refers to the structure in the fuse 30 that can be cut off. After the fusible element 32 is cut off, it can disconnect the corresponding circuit. The fusible element 32 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 32 is cut off. The cutting off of the fusible element 32 can refer to the fusible element 32 generating high temperature and melting itself when the current exceeds the preset threshold. The cutting off of the fusible element 32 can also refer to the fusible element 32 being cut off by an external structure (such as a piston or other cutting mechanism). The fusible element 32 can be a filament, sheet, or other shape. The fusible element 32 should be made of a conductive material, and the material of the fusible element 32 can include lead, zinc, tin, copper, etc.

[0091] Since fuse 30 needs to be connected to the corresponding circuit, and fuse element 32 is used to disconnect the corresponding circuit, current should flow through fuse element 32. Fuse element 32 can be directly connected to the corresponding circuit, that is, fuse element 32 can be directly connected to the cables, switches or other electrical connection structures of the corresponding circuit; fuse element 32 can also be indirectly connected to the corresponding circuit, that is, the outer casing 31 is connected to the cables, switches or other electrical connection structures of the corresponding circuit, and fuse element 32 is electrically connected to the outer casing 31.

[0092] Depending on the connection method between the fuse 30 and each battery cell 21, the fuse 32 can be electrically connected to two or more battery cells 21, or the fuse 32 can be electrically connected to each battery cell 21.

[0093] Controller 33 refers to the structure in fuse 30 used to receive external signals and control the state of fusible element 32 according to the signals. Controller 33 can control the on / off state of fusible element 32 according to the received external signals. For example, when fuse 30 includes a cutting structure, the cutting structure can cut off fusible element 32 to disconnect the circuit. The cutting structure may include a piston, ignition device, etc. In this case, controller 33 is used to control the action of the cutting structure. For example, controller 33 is an excitation controller.

[0094] When the fuse 30 includes a controller 33, the fuse element 32 can either heat up and melt when the current flowing through it exceeds a preset threshold, or the fuse element 32 can be cut off under the control of the controller 33.

[0095] In the current battery device 100, the relevant circuit board of the controller 33 is usually located in a different position from the fuse 32. When the fuse 30 needs to be replaced or repaired, the staff needs to disassemble the controller 33 and the fuse 32 in different positions, which is a rather cumbersome process.

[0096] At least one of the fuse element 32 and the controller 33 is detachably connected to the housing 31. That is, only one of the fuse element 32 or the controller 33 can be detachably connected to the housing 31, or both the fuse element 32 and the controller 33 can be detachably connected to the housing 31. The fuse element 32 and the controller 33 can be detachably connected to the housing 31 by screwing, snapping or other means, so as to facilitate the installation and removal by the staff and simplify the maintenance and replacement process of the fuse 30.

[0097] Accordingly, in this embodiment, both the fuse 32 and the controller 33 are mounted on the housing 31, meaning that the fuse 32 and the controller 33 are located in the same or similar positions. This allows workers to disassemble the fuse 32 and the controller 33 from the same location, and the disassembly and installation of the fuse 32 and the controller 33 can be performed by disassembling only one part of the housing 10, simplifying the maintenance and replacement process of the fuse 30 and improving the efficiency of the maintenance and replacement of the fuse 30. At the same time, the fuse 32 and the controller 33 are detachably connected to the housing 31, which facilitates the installation and disassembly by workers, further simplifying the maintenance and replacement process of the fuse 30 and improving efficiency.

[0098] Referring to Figures 3 and 4, in some embodiments, the outer shell 31 includes a base 311 connected to the housing 10, and the melt 32 connected to the base 311; the outer shell 31 also includes a first support 312 connected to the base 311, and a controller 33 connected to the first support 312.

[0099] The base 311 refers to the structure in the fuse 30 used to provide a fixed foundation for the fuse element 32 and other structures. The base 311 can be a frame structure, or a plate-shaped, box-shaped or other shaped structure. The base 311 can be connected to the housing 10 by welding, screwing or other means. The base 311 can be directly connected to the housing 10, or indirectly connected to the housing 10 through an intermediate structure. The material of the base 311 can include metal, plastic or other materials.

[0100] The first support 312 refers to the structure in the fuse 30 used to support the controller 33, and the controller 33 can be installed on the first support 312. The first support 312 can be a square plate, a circular plate, a prism, a cylinder, a frustum, a cone, or other shaped structure. The first support 312 is connected to the first cover 313. The first support 312 can be connected to the first cover 313 by welding, bonding, or other means. The first support 312 can also be integrally formed with the first cover 313. The material of the first support 312 can include metal, plastic, or other materials.

[0101] In addition to supporting the controller 33, the first support platform 312 can also separate the controller 33 from the melt 32. In the event that the melt 32 melts at high temperature, this arrangement can reduce the damage that the melt 32 may cause to the controller 33.

[0102] It is possible to detachably connect only one of the melt 32 or the controller 33 to the housing 31, or both the melt 32 and the controller 33 can be detachably connected to the housing 31.

[0103] When the fuse element 32 is detachably connected to the housing 31, the fuse element 32 is detachably connected to the base 311. The fuse element 32 can be detachably connected to the base 311 by screwing, snapping or other means. After the fuse 30 is triggered, the operator can replace only the fuse element 32 so that the fuse 30 can continue to be used.

[0104] With the controller 33 detachably connected to the housing 31, the controller 33 is detachably connected to the first support 312. The controller 33 can be detachably connected to the first support 312 by screwing, snap-fitting or other means. After the fuse 30 is triggered, the operator needs to remove and inspect the controller 33 and replace it with a new controller 33 according to its condition. The detachable connection of the controller 33 to the first support 312 can reduce the difficulty of disassembling and installing the controller 33.

[0105] This embodiment provides some specific structures for the housing 31, such that the housing 31 includes a base 311 to support and fix the melt 32; at the same time, the housing 31 also includes a first support 312 to support and fix the controller 33; this arrangement also enables the controller 33 and the melt 32 to be fixed in different positions on the housing 31, which is convenient for workers to disassemble and install, and can also reduce the negative impact that the melt 32 may have on the controller 33 if it melts.

[0106] Referring to Figures 3 and 4, in some embodiments, the housing 31 further includes a second cover 314 connected to the first support 312, and the second cover 314 is used to cover at least a portion of the melt 32.

[0107] The second cover 314 refers to the structure in the outer casing 31 used to protect the molten element 32. The second cover 314 covers at least a portion of the fuse 30. The second cover 314 can completely cover the molten element 32. In this case, the second cover 314 can cooperate with the base 311 to form a receiving space to completely cover and protect the molten element 32. The second cover 314 can also cover only a portion of the molten element 32. In this case, the second cover 314 can cover the critical parts or easily damaged parts of the molten element 32. For example, the second cover 314 can cover the connection part of the electrical connection structure between the molten element 32 and the base 311 or the corresponding circuit to reduce the negative impact of external impurities or other structures on the connection stability of the molten element 32.

[0108] The second cover 314 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 314 can include metal, plastic, or other materials. For example, the second cover 314 can be a box-like insulating structure with an opening on one side, and the opening side is connected to the base 311 to form a receiving space and receive at least a portion of the melt 32.

[0109] The second cover 314 is connected to the first support 312, that is, the second cover 314 can be fixedly connected to the base 311 through the first support 312, and the second cover 314 can also be removed simultaneously with the disassembly of the first support 312; the second cover 314 can be connected to the first support 312 by welding, bonding or other means, and the second cover 314 can also be integrally formed with the first support 312; for example, the second cover 314 is integrally formed with the first support 312.

[0110] When it is necessary to repair or maintain the fuse 30, the first support 312 can be removed from the base 311. At the same time, the second cover 314 can also be removed, so that the workers can remove the fuse 32, simplifying the disassembly process of the fuse 32 and the controller 33.

[0111] In this embodiment, a second cover 314 is provided to cover part of the melt 32, thereby protecting the melt 32; the second cover 314 is connected to the first support 312 so that the workers can remove the second cover 314 at the same time as removing the first support 312, simplifying the disassembly process.

[0112] Referring to Figures 3 and 4, in some embodiments of the housing 31 including a first support 312, the first support 312 is provided with a receiving cavity 3121, and the controller 33 is received in the receiving cavity 3121; the housing 31 also includes a first cover 313, which is detachably connected to the first support 312 and covers the opening side of the receiving cavity 3121.

[0113] The receiving cavity 3121 refers to a groove-shaped structure provided on the first support 312. The receiving cavity 3121 can form a space structure with one end open on the first support 312. The receiving cavity 3121 is used to accommodate at least a part of the controller 33. The receiving cavity 3121 can be a square groove structure, a circular groove structure, or a groove structure of other shapes.

[0114] The controller 33 is housed in the receiving cavity 3121. The controller 33 may be partially housed in the receiving cavity 3121 or it may be completely housed in the receiving cavity 3121. Within the receiving cavity 3121, the controller 33 may be directly connected to the inner wall of the receiving cavity 3121 or indirectly connected to the inner wall of the receiving cavity 3121 through an intermediate structure. The controller 33 may be connected to the inner wall of the receiving cavity 3121 by screwing, snapping, or other means.

[0115] The first cover 313 refers to the structure in the fuse 30 used to protect the controller 33. The first cover 313 covers the opening side of the receiving cavity 3121 to form an internal space isolated from the outside on the first support 312. At this time, the controller 33 is housed in the internal space. Both the first cover 313 and the first support 312 can protect the controller 33.

[0116] The first cover 313 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 313 can include metal, plastic, or other materials. For example, the first cover 313 is a box-like insulating structure with an opening on one side, and the opening side is connected to the first support 312 to form an internal space isolated from the outside world and used to accommodate the controller 33.

[0117] The first cover 313 is detachably connected to the first support 312. The first cover 313 can be detachably connected to the first support 312 by screwing, snapping or other means. This arrangement facilitates the disassembly of the first cover 313, thereby facilitating the replacement of the controller 33 by the staff.

[0118] This embodiment provides some specific structures for the outer casing 31, such that the outer casing 31 includes a first cover 313, and the controller 33 is housed in the receiving cavity 3121 of the first support 312. The first cover 313 covers the receiving cavity 3121, so that the inner space is formed by the first cover 313 and the inner wall of the receiving cavity 3121, and the controller 33 is separated from the external space, thereby protecting the controller 33. At the same time, the first cover 313 is detachably connected to the first support 312 to facilitate the installation and removal of the controller 33.

[0119] Referring to Figures 3 to 5, in some embodiments of the outer casing 31 including a first cover 313, the first cover 313 includes a first main body 3131, the first main body 3131 is provided with a first latch 3132; the first support 312 is provided with a first latch 3122, the first latch 3122 is movable relative to the first support 312 to insert or withdraw from the first latch 3132.

[0120] The first main body 3131 refers to the part of the first cover 313 used to cover and protect the controller 33. The first main body 3131 is also used as a carrier for the first bayonet 3132 and other structures. The first main body 3131 can be a plate-shaped structure, a box-shaped structure with one end open, or other shapes. The material of the first main body can include metal, plastic, or other materials.

[0121] The first latch 3132 refers to a latching structure provided on the first main body 3131, which is used to cooperate with the first latch body 3122. The first latch 3132 can be a hole structure that penetrates the first main body 3131, or it can be a groove structure that does not penetrate the first main body 3131. The shape of the first latch 3132 can be circular, square or other shapes. The number of first latches 3132 can be one, or two or more.

[0122] The first locking body 3122 refers to the structure on the first support 312 used to cooperate with the first latch 3132 to fix the first main body 3131. The first locking body 3122 can be a columnar structure, a plate-like structure, or a structure of other shapes. The material of the first locking body 3122 can include metal, plastic, or other materials. The material of the first locking body 3122 can be the same as or different from the material on the first support 312.

[0123] The first locking body 3122 is connected to the first support 312 and can move relative to the first support 312, so that the first locking body 3122 can be inserted into the first locking slot 3132 or withdrawn from the first locking slot 3132; when the first locking body 3122 is inserted into the first locking slot 3132, the first main body 3131 can be fixed on the first support 312, and when the first locking body 3122 is withdrawn from the first locking slot 3132, the first main body 3131 can be detached from the first support 312.

[0124] When the first card body 3122 is inserted into the first slot 3132, in order for the first main body 3131 to be fixed relatively stably, there should be no gap or a small gap between the first card body 3122 and the inner wall of the first slot 3132; for example, each side of the first card body 3122 perpendicular to its direction of movement can abut against the inner wall of the corresponding first slot 3132; for example, in the direction perpendicular to the direction of movement of the first card body 3122, the cross-sectional shape of the first card body 3122 is the same as the shape of the first slot 3132.

[0125] The first locking body 3122 can be movably connected to the first support 312 in several ways. The first locking body 3122 can be directly connected to the first support 312; for example, a groove structure can be provided on the first support 312, and the first locking body 3122 can be slidably connected within the groove structure, allowing the first locking body 3122 to move along the groove structure and insert or retract into the first locking slot 3132; for example, a guide rail structure can be provided on the first support 312, and the first locking body 3122 can be slidably connected to the guide rail structure, allowing the first locking body 3122 to move along the guide rail structure and insert or retract into the first locking slot 3132. The first card body 3122 can also be indirectly connected to the first support 312; for example, the first card body 3122 can be indirectly connected to the first support 312 through an elastic structure, in which case the movement of the first card body 3122 relative to the first support 312 can cause the elastic structure to deform; for example, the first card body 3122 can also be indirectly connected to the first support 312 through a flexible structure, in which case the movement of the first card body 3122 relative to the first support 312 can cause the flexible structure to deform.

[0126] With the first cover 313 fixed to the first support 312, the first locking body 3122 is inserted into the first locking slot 3132. If the first cover 313 needs to be removed, the operator can remove the first locking body 3122 from the first locking slot 3132 and then remove the first cover 313. If the first cover 313 needs to be installed, the operator can move the first locking body 3122 away from the first locking slot 3132 and make the first locking body 3122 face the first locking slot 3132, and then insert the first locking body 3122 into the first locking slot 3132.

[0127] This embodiment provides some specific structures of the first cover 313. A first slot 3132 is provided on the first cover 313, and a first latch 3122 is correspondingly provided on the first support 312, so that the first latch 3122 can be inserted into the first slot 3132, so that the first cover 313 can be fixed by the cooperation between the first latch 3122 and the first slot 3132; the first latch 3122 can move relative to the first support 312, so that the first latch 3122 can be withdrawn from the first slot 3132, thereby facilitating the disassembly and installation of the first cover 313.

[0128] Referring to Figures 3 to 5, in some embodiments where a first card body 3122 is provided on the first support 312, the first support 312 is provided with a first elastic connecting part 3123, and the first card body 3122 is provided on the first connecting part 3123; the first card body 3122 can be inserted into the first slot 3132 under the action of the first connecting part 3123.

[0129] The first connecting part 3123 refers to the structure on the first support 312 used to connect the first card body 3122 to the first main body 3131; the first connecting part 3123 is an elastic structure, and the first connecting part 3123 can be an elastic plate, column or other structure, or it can be a spiral structure (e.g., a spring); the number of first connecting parts 3123 can be one, two or more; the material of the first connecting part 3123 can include metal, plastic or other materials, and the material of the first connecting part 3123 can be the same as or different from the material of the first support 312.

[0130] One end of the first connecting part 3123 is connected to the first support 312, and the other end of the first connecting part 3123 is connected to the first clip body 3122, so that the first clip body 3122 can be indirectly connected to the first support 312 through the first connecting part 3123. The first connecting part 3123 can be connected to the first support 312 by welding, bonding or other means, or it can be integrally formed with the first support 312. The first clip body 3122 can be connected to the first connecting part 3123 by welding, bonding or other means, or it can be integrally formed with the first connecting part 3123.

[0131] The first locking body 3122 can be inserted into the first locking slot 3132 under the action of the first connecting part 3123. That is, when the first connecting part 3123 is deformed under pressure, the force exerted on the first locking body 3122 is directed towards the first locking slot 3132. Since the first connecting part 3123 is located between the first locking body 3122 and the first support 312, when the first locking body 3122 moves away from the first locking slot 3132, the first connecting part 3123 is deformed under pressure and provides a force to the first locking body 3122 in the direction of the first locking slot 3132. When the first locking body 3122 is opposite to the first locking slot 3132, the force exerted on the first locking body 3122 by the deformation of the first connecting part 3123 is directed towards the first locking slot 3132.

[0132] When the first card body 3122 is inserted into the first slot 3132, the first connecting part 3123 can be in a natural state. At this time, the first card body 3122 is not subject to the force of the first connecting part 3123. However, when the first card body 3122 moves in the direction of exiting the first slot 3132, the first connecting part 3123 will apply a force to the first card body 3122 pointing towards the first slot 3132 to prevent the first card body 3122 from exiting the first slot 3132, thereby making the first cover 313 more stably fixed on the first support 312.

[0133] When the first card body 3122 is inserted into the first slot 3132, the first connecting part 3123 can also be under pressure. At this time, the first connecting part 3123 will apply a force to the first card body 3122 pointing towards the first slot 3132, so that the first card body 3122 can be more stably located in the first slot 3132, thereby making the first cover 313 more stably fixed on the first support 312.

[0134] When the worker needs to remove the first cover 313, the worker can press the first connecting part 3123 to deform it away from the first latch 3132, so that the first latch 3122 is disengaged from the first latch 3132. When the worker needs to install the first cover 313, the worker can press the first connecting part 3123 to deform it away from the first latch 3132, then place the first cover 313 in the corresponding position of the first support 312, and release the first connecting part 3123 when the first latch 3122 is opposite to the first latch 3132. At this time, the first connecting part 3123 is reset and the first latch 3122 is inserted into the first latch 3132.

[0135] This embodiment provides some specific structures of the first cover 313, and provides a first connecting part 3123. The first connecting part 3123 enables the first locking body 3122 to move relative to the first main body 3131, so that the first locking body 3122 can be inserted into or removed from the first locking slot 3132. The first connecting part 3123 can both allow the first locking body 3122 to be inserted into the first locking slot 3132 to fix the first cover 313, and allow the operator to remove the first locking body 3122 from the first locking slot 3132 by pressing the first connecting part 3123, so as to facilitate the disassembly and installation of the first cover 313.

[0136] Referring to Figures 3 to 5, in some embodiments where a first latch 3132 is provided on the first cover 313, there are at least two first latches 3132, which are provided on the periphery of the first main body 3131 and located on different sides of the first main body 3131; there are multiple first latches 3122, which are located on different sides of the first support 312 and cooperate with different first latches 3132.

[0137] There are at least two first checkpoints 3132, and the number of first checkpoints 3132 can be two, three or more; correspondingly, the number of first card bodies 3122 can also be two, three or more.

[0138] At least two first latches 3132 are provided on the periphery of the first main body 3131 and located on different sides. Correspondingly, at least two first latches 3122 are provided on the periphery of the first support 312 and located on different sides. That is, the first latches 3122 are also located on different sides of the first main body 3131. At this time, the first latches 3122 and the first latches 3132 on different sides can stably fix the first cover 313 to the first support 312, thereby improving the connection stability of the first cover 313.

[0139] In this embodiment, there are at least two first latches 3132, and the at least two first latches 3132 are respectively located on different sides of the first main body 3131. At the same time, the first latch body 3122 is set corresponding to the first latches 3132, so that the first latch body 3122 can cooperate with the first latches 3132 to fix different sides of the first main body 3131, thereby improving the connection stability of the first cover 313.

[0140] Referring to Figures 3 to 5, in some embodiments, the first main body 3131 is further provided with a protrusion 3133, which is configured to abut against the base 311 along the mounting direction of the first cover 313.

[0141] The protrusion 3133 refers to the limiting structure on the first main body 3131. The protrusion 3133 extends outward from the first main body 3131. The shape of the protrusion 3133 can be a square plate, a semi-circular plate, a prism, a frustum, or other shapes. The protrusion 3133 can be connected to the first main body 3131 by welding, bonding, or other means. The protrusion 3133 can also be integrally formed with the first main body 3131. The material of the protrusion 3133 can include metal, plastic, or other materials. The material of the protrusion 3133 can be the same as or different from the material of the first main body 3131.

[0142] The number of protrusions 3133 can be one, two or more. When the number of protrusions 3133 is two or more, each protrusion 3133 can be located on a different side of the first main body 3131.

[0143] The protrusion 3133 can abut against the base 311 along the installation direction of the first cover 313 to prevent the first cover 313 from moving further. Since the first cover 313 is mainly used to cooperate with the first support 312 to form an internal space to accommodate and protect the controller 33, and the installation direction of the first cover 313 is also the direction close to the controller 33, the protrusion 3133 is provided to limit the displacement of the first cover 313 and reduce the risk of collision or pressure on the controller 33 caused by excessive movement of the first cover 313.

[0144] For example, the first cover 313 can be installed on the first support 312 from top to bottom along the direction of gravity, at which time the opening of the receiving cavity 3121 faces upward. When the first cover 313 is connected to the first support 312, the protrusion 3133 abuts against the upper side of the first support 312 to restrict the movement of the first cover 313.

[0145] In this embodiment, a protrusion 3133 is provided on the first main body 3131 to restrict the displacement of the first cover 313, thereby reducing the risk of the first cover 313 shifting position and damaging the controller 33 during installation, and reducing interference and collision between the first cover 313 and the first support 312 during installation. This reduces the potential damage between the first cover 313 and the first support 312, and also reduces the potential damage to the controller 33 caused by the first cover 313 during installation.

[0146] Referring to Figures 3 and 4, in some embodiments, a fixing post 3124 is provided on the first support 312, and at least part of the fixing post 3124 supports the controller 33.

[0147] The fixing post 3124 refers to the structure on the first support 312 used to support the controller 33. The fixing post 3124 can be a prism, cylinder, frustum, truncated cone or other shapes. The fixing post 3124 is connected to the first support 312. The fixing post 3124 can also be connected to the first support 312 by welding, bonding or other means. The fixing post 3124 can also be formed with the first support. The number of fixing posts 3124 can be one, two or more. The material of the fixing post 3124 can include metal, plastic or other materials. The material of the fixing post 3124 can be the same as or different from the material of the first support 312.

[0148] When the first support 312 has a receiving cavity 3121, the fixing column 3124 can be located in the receiving cavity 3121 so that the controller 33 can be accommodated in the receiving cavity 3121.

[0149] The fixing post 3124 is used to support the controller 33, that is, the controller 33 is located on the fixing post 3124. The controller 33 can be connected to the fixing post 3124 by snap-fit, screw-fit or other means. The fixing post 3124 allows the controller 33 to be detached from the first support 312 and in a suspended state, so as to reduce the contact area between the controller 33 and the first support 312, thereby reducing the wind direction that could cause damage to the controller 33 due to collision with the first support 312; at the same time, in the event of the high-temperature melting of the molten metal 32, this setting can also reduce the temperature transferred to the controller 33, thereby protecting the controller 33 and facilitating better heat dissipation of the controller 33.

[0150] When the first support 312 has a receiving cavity 3121, the setting of the fixing column 3124 can reduce the contact between the controller 33 and the inner wall of the receiving cavity 3121, thereby reducing the collision between the controller 33 and the inner wall of the receiving cavity 3121, reducing the heat that can be transferred to the controller 33, and facilitating the heat dissipation of the controller 33.

[0151] In this embodiment, a fixing column 3124 is provided on the first support 312 to support the controller 33, thereby reducing the contact area between the controller 33 and the first support 312, reducing the damage that may be caused by friction between the controller 33 and the first support 312, and also providing heat dissipation space for the bottom of the controller 33.

[0152] Referring to Figures 3 to 5, in some embodiments where a fixing post 3124 is provided on the first support 312, a fixing hole 331 is provided on the controller 33, a part of the fixing post 3124 passes through the fixing hole 331, and another part of the fixing part abuts against the controller 33.

[0153] The fixing hole 331 refers to the hole structure opened on the controller 33. The fixing hole 331 can be a square hole, a round hole or other shaped hole structure. The fixing hole 331 can be a straight hole, a stepped hole, a tapered hole or other shaped hole structure.

[0154] The fixing hole 331 is used to be opposite to the fixing post 3124 so that a part of the fixing post 3124 can pass through the fixing hole 331. The part of the fixing post 3124 that passes through the fixing hole 331 can play the role of limiting the displacement of the controller 33 in the radial direction of the fixing post 3124. The part that passes through the fixing hole 331 can abut against the inner wall of the fixing hole 331 or can be spaced apart from the inner wall of the fixing hole 331.

[0155] Another part of the fixing post 3124 can abut against the controller 33 at the edge of the fixing hole 331. This part of the fixing post 3124 that abuts against the controller 33 can support the controller 33 in the axial direction of the fixing post 3124. When this part of the fixing post 3124 abuts against the edge of the fixing hole 331, this part of the fixing post 3124 can also restrict the movement of the fixing post 3124 in the radial direction of the fixing post 3124.

[0156] Accordingly, the fixing post 3124 can be a frustum, truncated cone, cone, or frustum-shaped structure. In this case, the diameter of a certain part of the fixing post 3124 is equal to the inner diameter of the fixing hole 331. This part of the fixing post 3124 abuts against the edge of the fixing hole 331 to support the fixing post 3124 and limit the radial displacement of the controller 33 in the fixing post 3124. In this case, the smaller diameter part of the fixing post 3124 can be located inside or through the fixing hole 331.

[0157] The fixing post 3124 can also be a stepped structure. In this case, the fixing post 3124 can include two parts with different diameters. The smaller diameter part can be located inside or through the fixing hole 331. This part can abut against the inner wall of the fixing hole 331 or be spaced apart from the inner wall of the fixing hole 331. The larger diameter part can be located on one side of the fixing hole 331 and abut against the controller 33 to support the controller 33.

[0158] The number of fixing holes 331 can be one, two or more; since the fixing holes 331 are used to cooperate with the fixing posts 3124, the number of fixing holes 331 can be the same as or more than the number of fixing posts 3124.

[0159] For example, there are four fixing holes 331 located at the four corners of the controller 33, and four fixing posts 3124 located opposite the four fixing holes 331. The fixing posts 3124 are tapered structures, with one part of the fixing post 3124 extending into the fixing hole 331, and the other part of the fixing post 3124 supporting and abutting the controller 33 from below.

[0160] This embodiment provides a structure for fixing the controller 33 with some fixing posts 3124. Fixing holes 331 are provided on the controller 33, so that a part of the fixing post 3124 passes through the fixing hole 331, thereby limiting the relative displacement of the controller 33 and thus fixing the controller 33; the other part of the fixing part supports the controller 33, thereby reducing the contact between the controller 33 and the inner wall of the receiving cavity 3121.

[0161] Referring to Figures 3 to 5, in some embodiments, the first cover 313 is provided with a fixing groove 3134 opposite to the fixing post 3124 on the side facing the first support 312, and the part of the fixing post 3124 that passes through the fixing hole 331 is inserted into the fixing groove 3134.

[0162] The fixing groove 3134 refers to the groove structure provided on the first cover 313. The fixing groove 3134 can be a groove structure opened on the first cover 313, or it can be a groove structure surrounded by other structures on the first cover 313. For example, the first cover 313 is provided with a sleeve structure, and the fixing groove 3134 is formed in the sleeve structure. The fixing groove 3134 can be a circular groove, a square groove, or a groove structure of other shapes. The number of fixing grooves 3134 can be one, or two or more.

[0163] The fixing groove 3134 is used to accommodate the portion of the fixing post 3124 that passes through the fixing hole 331. Therefore, the fixing groove 3134 should be located on the side of the first cover 313 facing the fixing post 3124, that is, on the side of the first cover 313 facing the first support 312. The portion of the fixing post 3124 that passes through the fixing hole 331 can be accommodated in the fixing groove 3134 to limit the displacement of the first cover 313 and guide the installation of the first cover 313.

[0164] During the process of installing the first cover 313 onto the first support 312, the fixing groove 3134 is opposite to the fixing post 3124, and the first cover 313 can be fastened onto the first support 312 along the axial direction of the fixing post 3124, so that the first clip 3122 can be inserted into the first slot 3132.

[0165] In this embodiment, a fixing groove 3134 opposite to the fixing post 3124 is provided on the first cover 313, so that the fixing post 3124 can be inserted into the fixing groove 3134. At this time, the fixing post 3124 can also play a role in guiding and assisting in determining the position of the first cover 313 during the installation process. At the same time, the fixing post 3124 can also limit the displacement of the first cover 313, so that the first cover 313 can be more stably connected to the first support 312.

[0166] Referring to Figures 3 to 5, in some embodiments, the base 311 is provided with a second bayonet 3111; a second bayonet 3125 is movably connected to the first support 312, and the second bayonet 3125 can move relative to the first support 312 to insert or withdraw from the second bayonet 3111.

[0167] The second latch 3111 refers to a latching structure provided on the base 311, which is used to cooperate with the second latch body 3125 of the first support 312. The second latch 3111 can be a hole structure that penetrates the base 311 or a groove structure that does not penetrate the base 311. The shape of the second latch 3111 can be circular, square or other shapes. The number of second latches 3111 can be one, two or more.

[0168] The second locking body 3125 refers to the structure in the first base 312 used to cooperate with the second locking slot 3111 to fix the first base 312. The second locking body 3125 can be a columnar structure, a plate-like structure, or a structure of other shapes. The material of the second locking body 3125 can include metal, plastic, or other materials. The material of the second locking body 3125 can be the same as or different from the material of the first base 312.

[0169] The second locking body 3125 is connected to the first support 312 and can move relative to the first support 312, so that the second locking body 3125 can be inserted into the second locking slot 3111 or withdrawn from the second locking slot 3111; when the second locking body 3125 is inserted into the second locking slot 3111, the first support 312 can be fixed on the base 311; when the second locking body 3125 is withdrawn from the second locking slot 3111, the first support 312 can be detached from the base 3111.

[0170] When the second card body 3125 is inserted into the second bayonet 3111, in order for the first support 312 to be fixed relatively stably, there should be no gap or a small gap between the second card body 3125 and the inner wall of the second bayonet 3111; for example, each side of the second card body 3125 perpendicular to its direction of movement can abut against the inner wall of the corresponding second bayonet 3111; for example, in the direction perpendicular to the direction of movement of the second card body 3125, the cross-sectional shape of the second card body 3125 is the same as the shape of the second bayonet 3111.

[0171] The second locking body 3125 can be movably connected to the first support 312 in several ways. The second locking body 3125 can be directly connected to the first support 312; for example, a groove structure can be provided on the first support 312, and the second locking body 3125 can be slidably connected within the groove structure, allowing the second locking body 3125 to move along the groove structure and insert or retract into the second locking slot 3111; for example, a guide rail structure can be provided on the first support 312, and the second locking body 3125 can be slidably connected to the guide rail structure, allowing the second locking body 3125 to move along the guide rail structure and insert or retract into the second locking slot 3111. The second card body 3125 can also be indirectly connected to the first support 312; for example, the second card body 3125 can be indirectly connected to the first support 312 through an elastic structure, in which case the movement of the second card body 3125 relative to the first support 312 can cause the elastic structure to deform; for example, the second card body 3125 can also be indirectly connected to the first support 312 through a flexible structure, in which case the movement of the second card body 3125 relative to the first support 312 can cause the flexible structure to deform.

[0172] With the first support 312 fixed to the base 311, the second locking body 3125 is inserted into the second locking slot 3111. If the first support 312 needs to be disassembled, the operator can remove the second locking body 3125 from the second locking slot 3111, that is, move the second locking body 3125 towards the second main body, and then remove the first support 312. If the first support 312 needs to be installed, the operator can move the second locking body 3125 towards the second main body, align the second locking body 3125 with the second locking slot 3111, and then insert the second locking body 3125 into the second locking slot 3111.

[0173] In this embodiment, a second locking body 3125 is provided on the first support 312, and a second locking slot 3111 is provided on the base 311, so that the second locking body 3125 can be inserted into the second locking slot 3111, so that the first support 312 is fixed on the base 311 through the cooperation of the second locking body 3125 and the second locking slot 3111; the second locking body 3125 is movable relative to the first support 312, so that the second locking body 3125 can be withdrawn from the second locking slot 3111, so as to facilitate the disassembly and installation of the first support.

[0174] Referring to Figures 3 to 5, in some embodiments, the first support 312 is provided with a second elastic connecting part 3126, and the second locking body 3125 is provided on the second connecting part 3126; the second locking body 3125 can be inserted into the second locking slot 3111 under the action of the second connecting part 3126.

[0175] The second connecting part 3126 refers to the structure on the first support 312 used to connect the second clip 3125 to the first support 312; the second connecting part 3126 is an elastic structure, and the second connecting part 3126 can be an elastic plate, column or other structure, or a spiral structure (e.g., a spring); the number of second connecting parts 3126 can be one, two or more; the material of the second connecting part 3126 can include metal, plastic or other materials, and the material of the second connecting part 3126 can be the same as or different from the material of the first support 312.

[0176] One end of the second connecting part 3126 is connected to the first support 312, and the other end of the second connecting part 3126 is connected to the second clip body 3125, so that the second clip body 3125 can be indirectly connected to the first support 312 through the second connecting part 3126. The second connecting part 3126 can be connected to the first support 312 by welding, bonding or other means, or it can be integrally formed with the first support 312. The second clip body 3125 can be connected to the second connecting part 3126 by welding, bonding or other means, or it can be integrally formed with the second connecting part 3126.

[0177] The second locking body 3125 can be inserted into the second bayonet 3111 under the action of the second connecting part 3126. That is, when the second connecting part 3126 is deformed under pressure, the force exerted by the second connecting part 3126 on the second locking body 3125 is directed towards the second bayonet 3111. Since the second connecting part 3126 is located between the second locking body 3125 and the first support 312, during the movement of the second locking body 3125 towards the first support 312, the second connecting part 3126 is deformed under pressure and provides a force to the second locking body 3125 in a direction away from the first support 312. When the second locking body 3125 is opposite to the second bayonet 3111, the force exerted by the second connecting part 3126 on the second locking body 3125 under pressure is directed towards the second bayonet 3111.

[0178] When the second locking body 3125 is inserted into the second locking slot 3111, the second connecting part 3126 can be in a natural state. At this time, the second locking body 3125 is not subject to the force of the second connecting part 3126. However, when the second locking body 3125 moves in the direction of exiting the second locking slot 3111, the second connecting part 3126 will apply a force to the second locking body 3125 pointing towards the second locking slot 3111 to prevent the second locking body 3125 from exiting the second locking slot 3111, thereby allowing the first support 312 to be fixed more stably on the base 311.

[0179] When the second card body 3125 is inserted into the second bayonet 3111, the second connecting part 3126 can be in a compressed state. At this time, the second connecting part 3126 will apply a force to the second card body 3125 pointing towards the second bayonet 3111, so that the second card body 3125 can be more stably located in the second bayonet 3111, thereby making the first support 312 more stably fixed on the base 311.

[0180] When the worker needs to disassemble the first support 312, the worker can press the second connecting part 3126 to deform it toward the first support 312, so that the second locking body 3125 can be disengaged from the second locking slot 3111; when the worker needs to install the first support 312, the worker can press the second connecting part 3126 to deform it toward the first support 312, and release the second connecting part 3126 when the second locking body 3125 is opposite to the second locking slot 3111. At this time, the second connecting part 3126 is reset and the second locking body 3125 is inserted into the second locking slot 3111.

[0181] In this embodiment, a second connecting part 3126 is provided, which allows the second locking body 3125 to move relative to the first support 312, so that the second locking body 3125 can be inserted into or removed from the second locking slot 3111. The second connecting part 3126 can both allow the second locking body 3125 to be inserted into the second locking slot 3111 to fix the first support 312, and allow the operator to remove the second locking body 3125 from the second locking slot 3111 by pressing the second connecting part 3126, so as to facilitate the disassembly and installation of the first support 312.

[0182] Referring to Figures 3 to 5, in some embodiments, there are at least two second connecting portions 3126 respectively located on opposite sides of the first base 312. At least a portion of the second connecting portions 3126 on both sides of the first base 312 can deform and move closer to each other so that the corresponding second locking body 3125 can exit the second locking slot 3111.

[0183] The number of second connecting parts 3126 is at least two, that is, the number of second connecting parts 3126 can be two, three or more. Since one end of the second connecting part 3126 is connected to the second card body 3125, when there are multiple second connecting parts 3126, there can also be multiple second card bodies 3125. At this time, there can also be multiple second bayonet slots 3111.

[0184] When there are at least two second connecting parts 3126, each second connecting part 3126 is respectively provided on both sides of the first support 312, and the second locking body 3125 corresponding to each second connecting part 3126 is also located on the opposite sides of the first support 312, and the second locking slot 3111 corresponding to the second locking body 3125 is also provided on the opposite sides of the first support 312; at this time, the first support 312 can be more stably and balancedly fixed on the base 311 through the second locking body 3125 and the second locking slot 3111 on both sides.

[0185] Because the second connecting part 3126 can drive the second locking body 3125 to exit the corresponding second locking slot 3111 when it deforms towards the first support 312, when each of the second connecting parts 3126 is located on opposite sides of the first support 312, the movement of the second connecting parts 3126 on both sides of the first support 312 towards each other can drive each of the second locking bodies 3125 to exit the corresponding second locking slot 3111.

[0186] When the worker needs to disassemble the first support platform 312, the worker's fingers can press on each of the second connecting parts 3126 on both sides of the first support platform 312, and then close the fingers inward to press each of the second connecting parts 3126 to deform towards the first support platform 312, thereby driving each of the second locking bodies 3125 to exit the corresponding second locking slot 3111.

[0187] When the staff needs to install the first support 312, the staff can first press each of the second connecting parts 3126 inward, and then place the first support 312 in the corresponding position of the base 311. When each of the second locking bodies 3125 is opposite to the corresponding second locking slot 3111, the second connecting parts 3126 can be released. At this time, the second connecting parts 3126 will reset and drive the second locking bodies 3125 to insert into the second locking slot 3111.

[0188] In this embodiment, the number of second connecting parts 3126 is at least two, and the at least two second connecting parts 3126 are located at least on opposite sides of the first support 312. At the same time, the second locking body 3125 and the second locking slot 3111 are correspondingly arranged so that the second locking body 3125 can cooperate with the second slot to fix different sides of the first support 312, thereby improving the connection stability of the first support 312.

[0189] Referring to Figures 3 to 6, in some embodiments, the base 311 is provided with a groove 3112, at least a portion of the second connecting portion 3126 is slidably accommodated in the groove 3112 and is movable relative to the groove 3112; the second connecting portion 3126 abuts against at least one inner wall of the groove 3112.

[0190] The groove 3112 refers to the groove structure provided on the base 311; in the direction perpendicular to the extension direction of the groove 3112, the cross-sectional shape of the groove 3112 can be square, semi-circular or other shapes; depending on the number of the second connecting parts 3126, the number of grooves 3112 can be one, or two or more.

[0191] In the case where there are multiple second connecting parts 3126 located on opposite sides of the first support 312, there are also multiple sliding grooves 3112 located on opposite sides of the first support 312 respectively, so as to correspond to each second connecting part 3126.

[0192] The slide 3112 is used to accommodate at least a portion of the second connecting portion 3126, that is, the second connecting portion 3126 may be partially accommodated in the slide 3112 or the second connecting portion 3126 may be completely accommodated in the slide 3112; for example, the second connecting portion 3126 is partially accommodated in the slide 3112, at which time the worker can press the part of the second connecting portion 3126 outside the slide 3112 to facilitate the installation and removal of the first support 312.

[0193] The second connecting part 3126 can move relative to the slide 3112 so that the second connecting part 3126 can enter or exit the slide 3112 to facilitate the installation or removal of the first support 312; the second connecting part 3126 can abut against at least one inner wall of the slide 3112, at which time the inner wall of the slide 3112 can play a role in assisting in fixing the second connecting part 3126, thereby playing a role in assisting in fixing the first support 312.

[0194] Depending on the relative positions of the second connecting part 3126 and the slide groove 3112, the second bayonet 3111 can be located on the inner wall of the slide groove 3112, or the second bayonet 3111 can be located at other positions of the base 311.

[0195] For example, the second slot 3111 is provided on the inner wall of the slide groove 3112. When the second card body 3125 is inserted into the corresponding second slot 3111, at least a portion of the second connecting part 3126 is accommodated in the slide groove 3112, and the portion of the second connecting part 3126 outside the slide groove 3112 is used for pressing by the staff.

[0196] In this embodiment, a groove 3112 is provided on the base 311 to accommodate at least a portion of the second connecting part 3126, thereby enabling the inner wall of the groove 3112 to fix and support the first connecting part 3123, and to support the first support platform 312 through the inner wall of the groove 3112 and the second connecting part 3126, so as to improve the stability of the first support platform 312.

[0197] Referring to Figures 7 and 8, in some embodiments, the housing 10 is provided with a maintenance port 13, and the fuse 30 is located inside the housing 10 at a position opposite to the maintenance port 13; a shielding structure 40 is also detachably connected to the housing 10, and the shielding structure 40 covers the maintenance port 13.

[0198] The maintenance port 13 refers to the opening structure provided on the housing 10. The maintenance port 13 penetrates the housing 10 so that the internal space of the housing 10 can communicate with the space outside the housing 10. The maintenance port 13 can be square, round or other shapes. The number of maintenance ports 13 can be one, two or more. The maintenance port 13 can be provided on the first housing 11, or on the second housing 12, or both the first housing 11 and the second housing 12 can be provided with maintenance ports 13.

[0199] The fuse 30 is located inside the enclosure 10 opposite to the maintenance port 13, that is, the fuse 30 is located near or opposite to the maintenance port 13, so that the operator can install and remove the fuse 32 and the controller 33 from the maintenance port 13 without having to disassemble the enclosure 10.

[0200] The shielding structure 40 refers to the structure in the battery device 100 used to shield the maintenance port 13. The shielding structure 40 may include a cover or other structures specifically designed to shield the maintenance port 13. The shielding structure 40 may include a battery monitoring unit (Cell Supervision Circuit, CSC), the input / output interface of the battery device 100, and other structures. In this case, in addition to their original functions, these structures can also serve to shield the maintenance port 13.

[0201] The shielding structure 40 is detachably connected to the housing 10. The shielding structure 40 can be detachably connected to the housing 10 by screwing, snapping or other means. This setting makes it easy for the staff to disassemble and install the shielding structure 40, thereby making it easy for the staff to install and disassemble the melt 32 and the controller 33 at the maintenance port 13.

[0202] Corresponding to the maintenance port 13, the shielding structure 40 can be provided on the first housing 11, or on the second housing 12, or both the first housing 11 and the second housing 12 can be provided with the shielding structure 40; for example, the first housing 11 is provided with the maintenance port 13, the shielding structure 40 is provided on the first housing 11, and the shielding structure 40 includes a battery monitoring unit.

[0203] Currently, replacing fuse 30 typically requires removing the top cover of the enclosure 10. This top cover is usually secured with numerous rivets and screws, and also contains electrical connections. Removing the top cover involves dismantling these rivets and screws, as well as disconnecting the electrical connections, making the process cumbersome and inefficient. Therefore, this embodiment provides a maintenance port 13 on the enclosure 10, allowing workers to repair and replace fuse 30 without disassembling the enclosure 10. This simplifies the fuse replacement process and improves its efficiency.

[0204] Since the battery device 100 has certain requirements for the dustproof and waterproof performance of the housing 10, a shielding structure 40 is set at the maintenance port 13 to reduce the negative impact that the maintenance port 13 may have on the dustproof and waterproof performance of the housing 10. At the same time, compared with the process of disassembling the housing 10, the operation of disassembling the shielding structure 40 is also simpler.

[0205] In this embodiment, a maintenance port 13 is provided on the housing 10, and the fuse 30 is positioned opposite the maintenance port 13. This allows the fuse 30 to be replaced simply by removing the shielding structure 40 and exposing the maintenance port 13, simplifying the replacement process and improving the replacement efficiency of the fuse 30.

[0206] In some embodiments, the housing 10 includes a first housing 11 and a second housing 12 that overlap each other, and the battery cell 21 and the fuse 30 are both housed in the housing 10.

[0207] The fuse 30 includes a housing 31, a fusible element 32, and a controller 33. The housing 31 includes a base 311, a first support 312, a first cover 313, and a second cover 314.

[0208] The base 311 is connected to the housing 10, and the molten element 32 is detachably connected to the base 311. The base 311 is provided with terminals for the molten element 32 to be connected to the corresponding circuit. The base 311 is provided with two sliding grooves 3112, and the side walls of the two sliding grooves 3112 are provided with first bayonet 3132.

[0209] A first support platform 312 is detachably connected to the base 311. A second connecting part 3126 is connected to each side of the first support platform 312. A second locking body 3125 is connected to the second connecting part 3126. The two second connecting parts 3126 are respectively opposite to the two sliding grooves 3112, and a portion of the second connecting part 3126 can be accommodated in the sliding groove 3112. When a portion of the second connecting part 3126 is accommodated in the sliding groove 3112, the corresponding second locking body 3125 is inserted into the corresponding second locking slot 3111. At this time, the second cover 314 is installed on the base 311, and the second main body covers a portion of the melt 32.

[0210] The first support 312 is provided with a receiving cavity 3121, and the controller 33 is housed in the receiving cavity 3121; the first support 312 is connected to a second connecting part 3126, and the second connecting part 3126 is connected to a second card body 3125.

[0211] The first cover 313 includes a first main body 3131, on which a first slot 3132 is provided, and a first connecting part 3123 can be inserted into the first slot 3132; when the first connecting part 3123 is inserted into the first slot 3132, the first cover 313 is installed on the first support 312, and the first main body 3131 covers the controller 33.

[0212] The second cover 314 is connected to the first support 312. When the first support 312 is connected to the base 311, the second cover 314 is also installed on the base 311, and the second cover 314 covers part of the melt 32.

[0213] The housing 10 has a maintenance port 13. The shielding structure 40 is detachably connected to the housing 10. The shielding structure 40 includes a battery monitoring unit. The fuse 30 is connected inside the housing 10 and is opposite to the battery monitoring unit.

[0214] Secondly, 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.

[0215] 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.

[0216] 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.

[0217] In some embodiments, the energy storage device 1 is an energy storage container or an energy storage cabinet.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] Thirdly, referring to FIG9, 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 second aspect, wherein the power conversion device 2 is used to electrically connect a power generation device 3 and an energy storage device 1.

[0226] 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.

[0227] Fourthly, referring to FIG10, 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 second aspect, or an energy storage system provided in some embodiments of the third aspect. The energy storage device 1 is used to provide electrical energy to the charging pile 4.

[0228] 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.

[0229] 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.

[0230] 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: Box; A battery cell assembly is housed within the housing, the battery cell assembly comprising a plurality of interconnected battery cells; A fuse, disposed within the housing, includes a housing, a fuse element, and a controller. The fuse element is electrically connected to a circuit in which multiple battery cells are interconnected. The fuse element is configured to disconnect to cut off the corresponding circuit. The controller is configured to control the on / off state of the fuse element. At least one of the fuse element and the controller is detachably connected to the housing.

2. The battery device of claim 1, wherein, The outer shell includes a base, the base being connected to the housing, and the molten material being connected to the base; The housing also includes a first support platform connected to one side of the base, and the controller is connected to the first support platform.

3. The battery device of claim 2, wherein, The housing also includes a second cover connected to the first support, and the second cover is used to cover at least a portion of the melt.

4. The battery device according to claim 2 or 3, wherein The first support platform has a receiving cavity with an opening on one side, and the controller is housed in the receiving cavity; The outer casing also includes a first cover, which is detachably connected to the first support and covers the opening side of the receiving cavity.

5. The battery device of claim 4, wherein, The first cover includes a first main body portion, and the first main body portion is provided with a first bayonet; The first support is provided with a first locking body, which can move relative to the first support to insert or retract from the first locking slot.

6. The battery device of claim 5, wherein, The first support platform is provided with a first flexible connecting part, and the first card body is provided on the first connecting part; The first card body can be inserted into the first bayonet under the action of the first connecting part.

7. The battery device according to claim 5 or 6, wherein There are at least two first bayonets, and the at least two first bayonets are provided on the periphery of the first main body and located on different sides of the first main body; There are multiple first card bodies, which are located on different sides of the first support and cooperate with different first card slots.

8. The battery device according to any one of claims 5-7, wherein, The first main body is also provided with a protrusion, which is configured to abut against the base along the installation direction of the first cover.

9. The battery device of any one of claims 4-8, wherein, The first support platform is provided with a fixed column, and at least a portion of the fixed column supports the controller.

10. The battery device of claim 9, wherein, The controller has a fixing hole, a part of the fixing post passes through the fixing hole, and another part of the fixing part abuts against the controller.

11. The battery device of claim 10, wherein, The first cover body has a fixing groove on the side facing the first support platform that is opposite to the fixing post, and the part of the fixing post that passes through the fixing hole is inserted into the fixing groove.

12. The battery device of any one of claims 2-11, wherein, The base is provided with a second bayonet; A second locking body is movably connected to the first support platform. The second locking body is movable relative to the first support platform to insert into or retract from the second locking slot.

13. The battery device of claim 12, wherein, The first support platform is provided with a second flexible 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.

14. The battery device of claim 13, wherein, The number of the second connecting parts is at least two and they are respectively provided on opposite sides of the first support. At least a portion of the second connecting parts on both sides of the first support can deform and move closer to each other so that the corresponding second card body can be disengaged from the second bayonet.

15. The battery device according to claim 13 or 14, wherein The base is provided with a sliding groove, and at least a portion of the second connecting part is slidably accommodated in the sliding groove and is movable relative to the sliding groove; The second connecting portion abuts against at least one inner wall of the groove.

16. The battery device of any one of claims 1-15, wherein, The enclosure is provided with a maintenance port, and the fuse is located inside the enclosure at a position corresponding to the maintenance port. The battery device also includes a detachable shielding structure connected to the housing, which covers the maintenance port.

17. An energy storage device, wherein, Includes a battery device as described in any one of claims 1-16, the battery device being used to store or provide electrical energy.

18. An energy storage system, wherein, It includes the energy storage device and the power conversion device as described in claim 17, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

19. A charging network, wherein, Includes the energy storage device as described in claim 17 or the energy storage system as described in claim 18; 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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