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

Abstract

The utility model is suitable for the technical field of batteries, and provides a battery device, an energy storage device, an energy storage system and a charging network. The battery monomer assembly is accommodated in the box body, and the battery monomer assembly comprises a plurality of battery monomers which are electrically connected with one another; the fuse is arranged in the box body, the fuse comprises a shell, a fuse body and a controller, the fuse body is electrically connected to a circuit in which the plurality of single batteries are electrically connected with one another, and at least one of the fuse body and the controller is detachably connected to the shell; according to the battery device provided by the embodiment of the invention, the melt and the controller are arranged on the shell, so that the melt and the controller are located at the same position or close to each other, and a worker can disassemble the melt and the controller from the same position; and the fuse and the controller can be disassembled and assembled only by disassembling one part of the box body, so that the maintenance and replacement process of the fuse is simplified, and the maintenance and replacement efficiency of the fuse is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of battery, and particularly relates to a battery device, an energy storage device, an energy storage system and a charging network. BACKGROUND

[0002] At present, from the development of market situation, the application of the battery device is more and more extensive. The battery device is not only applied to the energy storage power system such as hydroelectric power station, thermal power station, wind power station and solar power station, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric cars and electric transportation tools, and many fields such as military equipment and aerospace. With the continuous expansion of the application field of the battery device, the market demand is also increasing.

[0003] At present, when the fuse of the battery device is repaired and replaced, the fuse and the controller usually need to be detached from different positions of the battery device, which leads to a too cumbersome process of replacing the fuse and low efficiency. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a battery device, an energy storage device, an energy storage system and a charging network, which can alleviate the problem of cumbersome process of replacing the fuse of the current battery device.

[0005] In a first aspect, the embodiments of the present application provide a battery device, comprising:

[0006] a box body; a battery monomer assembly contained in the box body, the battery monomer assembly comprising a plurality of battery monomers electrically connected to each other; a fuse provided in the box body, the fuse comprising a shell, a fuse body and a controller, the fuse body being electrically connected to a circuit in which the plurality of battery monomers are electrically connected to each other, the fuse body being configured to be able to be disconnected to cut off the corresponding circuit, the controller being configured to be able to control the on-off state of the fuse body, and at least one of the fuse body and the controller being detachably connected to the shell.

[0007] In the technical solution of the embodiments, the fuse body and the controller are both arranged on the shell, so that the fuse body and the controller are located at the same position or a position close to each other, thereby enabling the worker to detach the fuse body and the controller from the same position, and the detachment and installation of the fuse body and the controller can be performed by detaching only one part of the box body, which simplifies the repair and replacement process of the fuse and improves the repair and replacement efficiency of the fuse.

[0008] In some embodiments, the shell comprises a base connected to the box body, and the fuse body is connected to the base; the shell further comprises a first bearing platform connected to the base, and the controller is connected to the first bearing platform.

[0009] The technical scheme of the embodiment provides specific structures of the shell, so that the shell comprises a base to carry and fix the fusing body, and the shell further comprises a first supporting platform to carry and fix the controller, so that the controller and the fusing body can be fixed at different positions of the shell, which facilitates the dismounting and mounting of the staff and reduces the negative influence of the fusing body on the controller.

[0010] In some embodiments, the shell further comprises a second cover connected to the first supporting platform, and the second cover is used to cover at least part of the fusing body.

[0011] In the technical scheme of the embodiment, the second cover is arranged to cover part of the fusing body, so as to protect the fusing body by the second cover, and the second cover is connected to the first supporting platform, so that the staff can dismount the first supporting platform and the second cover at the same time, thereby simplifying the dismounting process.

[0012] In some embodiments, the first supporting platform is provided with a containing cavity, and the controller is contained in the containing cavity; the shell further comprises a first cover which is detachably connected to the first supporting platform and covers an opening side of the containing cavity.

[0013] The technical scheme of the embodiment provides specific structures of the shell, so that the shell comprises the first cover, and the controller is contained in the containing cavity of the first supporting platform, the first cover covers the containing cavity, so as to form an internal space by the first cover and the inner wall of the containing cavity, and separate the controller from the external space, thereby protecting the controller; meanwhile, the first cover is detachably connected to the first supporting platform, so as to facilitate the mounting and dismounting of the controller.

[0014] In some embodiments, the first cover comprises a first main body provided with a first clamping hole, and the first supporting platform is provided with a first clamping body which can move relative to the first supporting platform to insert into or exit from the first clamping hole.

[0015] The technical scheme of the embodiment provides specific structures of the first cover, the first clamping hole is arranged on the first cover, and the first clamping body is correspondingly arranged on the first supporting platform, so that the first clamping body can be inserted into the first clamping hole to fix the first cover by cooperation of the first clamping body and the first clamping hole, and the first clamping body can move relative to the first supporting platform to exit from the first clamping hole, thereby facilitating the dismounting and mounting of the first cover.

[0016] In some embodiments, the first supporting platform is provided with a first connecting part with elasticity, and the first clamping body is arranged on the first connecting part; the first clamping body can be inserted into the first clamping hole under the action of the first connecting part.

[0017] The technical scheme of the embodiment provides specific structures of the first cover body, the first connecting part is arranged, the first clamping body can be moved relative to the first main body part through the first connecting part, so that the first clamping body can be inserted into or withdrawn from the first clamping opening; the first connecting part can not only enable the first clamping body to be inserted into the first clamping opening to fix the first cover body, but also can enable the first clamping body to be withdrawn from the first clamping opening by pressing the first connecting part, so as to facilitate dismounting and mounting of the first cover body.

[0018] In some embodiments, the first clamping opening is at least two, and the at least two first clamping openings are arranged on the circumferential side of the first main body part and are located on different sides of the first main body part; the first clamping body is a plurality, and the plurality of first clamping bodies are located on different sides of the first supporting platform and are matched with different first clamping openings.

[0019] In the technical scheme of the embodiment, the first clamping opening is at least two, and the at least two first clamping openings are arranged on different sides of the first main body part, respectively; the first clamping body is arranged correspondingly to the first clamping opening, so that the first clamping body can cooperate with the first clamping opening to fix different sides of the first main body part, thereby improving the connection stability of the first cover body.

[0020] In some embodiments, the first main body part is further provided with a protruding part, and the protruding part is configured to abut against the base along the mounting direction of the first cover body.

[0021] In the technical scheme of the embodiment, the protruding part is arranged on the first main body part, so as to limit the displacement of the first cover body, thereby reducing the risk that the first cover body deviates from the position during installation and damages the controller, and reducing the interference and collision between the first cover body and the first supporting platform during installation, so as to reduce the possible damage between the first cover body and the first supporting platform, and reduce the possible damage of the controller caused by the first cover body during installation.

[0022] In some embodiments, the first supporting platform is provided with a fixing column, and at least part of the fixing column supports the controller.

[0023] In the technical scheme of the embodiment, the fixing column is arranged on the first supporting platform, so as to support the controller through the fixing column, thereby reducing the contact area between the controller and the first supporting platform, reducing the damage caused by the friction between the controller and the first supporting platform, and providing a heat dissipation space for the bottom of the controller.

[0024] In some embodiments, the controller is provided with a fixing hole, a part of the fixing column passes through the fixing hole, and another part of the fixing column abuts against the controller.

[0025] The technical scheme of the embodiment provides the structure of the fixing column for fixing the controller, the fixing hole is arranged on the controller, a part of the fixing column passes through the fixing hole to limit the relative displacement of the controller through the part, thereby playing the role of fixing the controller, and the other part of the fixing column supports the controller to reduce the contact between the controller and the inner wall of the accommodating cavity.

[0026] In some embodiments, one side of the first cover body towards the first bearing platform is provided with a fixing groove opposite to the fixing column, and the part of the fixing column passing through the fixing hole is inserted into the fixing groove.

[0027] In the technical scheme of the embodiment, the fixing groove opposite to the fixing column is arranged on the first cover body, and the fixing column can be inserted into the fixing groove, at this time, the fixing column can also play the role of guiding and assisting in determining the position of the first cover body during the mounting process of the first cover body, and meanwhile, the fixing column can also play the role of limiting the displacement of the first cover body, so that the first cover body can be more stably connected to the first bearing platform.

[0028] In some embodiments, the base is provided with a second clamping opening, and the first bearing platform is movably connected with a second clamping body, and the second clamping body can move relative to the first bearing platform to be inserted into or withdrawn from the second clamping opening.

[0029] In the technical scheme of the embodiment, the second clamping body is arranged on the first bearing platform, and the second clamping opening is arranged on the base, so that the second clamping body can be inserted into the second clamping opening to fix the first bearing platform on the base through the cooperation of the second clamping body and the second clamping opening, and the second clamping body can be moved relative to the first bearing platform to make the second clamping body withdrawn from the second clamping opening, so as to facilitate the disassembly and mounting of the first bearing.

[0030] In some embodiments, the first bearing platform is provided with a second connecting part with elasticity, and the second clamping body is arranged on the second connecting part, and the second clamping body can be inserted into the second clamping opening under the action of the second connecting part.

[0031] The technical scheme of the embodiment provides some specific structures of the first bearing platform, the second connecting part is arranged, the second clamping body can be moved relative to the first bearing platform through the second connecting part, so that the second clamping body can be inserted into or withdrawn from the second clamping opening, and the second connecting part can make the second clamping body inserted into the second clamping opening to fix the first bearing platform, and meanwhile, the staff can also make the second clamping body withdrawn from the second clamping opening by pressing the second connecting part, so as to facilitate the disassembly and mounting of the first bearing.

[0032] In some embodiments, the number of the second connecting parts is at least two and is arranged on opposite sides of the first bearing platform, and at least part of the second connecting parts on the two sides of the first bearing platform can deform and approach each other to make the corresponding second clamping bodies withdrawn from the second clamping opening.

[0033] The technical scheme of the embodiment makes the number of the second connecting parts at least two, and makes the at least two second connecting parts at least located at opposite sides of the first bearing platform, and meanwhile makes the second clamping body and the second clamping hole correspondingly arranged, so that the second clamping body can fix different sides of the first bearing platform, thereby improving the connection stability of the first bearing platform.

[0034] In some embodiments, a sliding groove is arranged on the base, and at least part of the second connecting parts is slidably arranged in the sliding groove and can move relative to the sliding groove; the second connecting parts abut against at least one inner wall of the sliding groove.

[0035] In the technical scheme of the embodiment, the sliding groove is arranged on the base to accommodate at least part of the second connecting parts, so that the inner wall of the sliding groove can fix and support the first connecting parts, and the first bearing platform is supported by the inner wall of the sliding groove and the second connecting parts, thereby improving the stability of the fixing of the first bearing platform.

[0036] In some embodiments, a maintenance opening is arranged on the box body, and the fuse is arranged in the box body at a position corresponding to the maintenance opening; the battery device further comprises a shielding structure detachably connected to the box body, and the shielding structure covers the maintenance opening.

[0037] In the technical scheme of the embodiment, the maintenance opening is arranged on the box body, and the fuse is arranged opposite to the maintenance opening, so that the fuse can be replaced only by detaching the shielding structure and exposing the maintenance opening, thereby simplifying the replacement process of the fuse and improving the replacement efficiency of the fuse.

[0038] In a second aspect, the embodiments of the present application further provide a battery device, which comprises the battery device provided by some embodiments of the first aspect, and the battery device is used for storing or providing electric energy.

[0039] In a third aspect, the embodiments of the present application further provide a battery system, which comprises the battery device provided by some embodiments of the second aspect and a power conversion device, and the power conversion device is used for electrically connecting a power generation device and the battery device.

[0040] In a fourth aspect, the embodiments of the present application further provide a charging network, which comprises the battery device provided by some embodiments of the second aspect or the battery system provided by some embodiments of the third aspect; the charging network further comprises a charging pile, and the battery device is used for providing electric energy for the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are intended to depict only preferred embodiments and are therefore not intended to limit the present application in any way. Moreover, the purpose of the drawings is to provide illustrations and descriptions of the preferred embodiments, and to provide an understanding of the principles and operations of the present application. Accordingly, those skilled in the art will recognize that the drawings are illustrative only and are not necessarily drawn to scale. In the drawings:

[0042] Figure 1 An exploded view of a battery device provided for some embodiments of the present application;

[0043] Figure 2 An exploded view of a battery cell provided for some embodiments of the present application;

[0044] Figure 3 A perspective view of a fuse provided for some embodiments of the present application;

[0045] Figure 4 An exploded view of a fuse provided for some embodiments of the present application;

[0046] Figure 5 A perspective view of a first cover provided for some embodiments of the present application;

[0047] Figure 6 A perspective view of a base provided for some embodiments of the present application;

[0048] Figure 7 A perspective view of a battery device provided for some embodiments of the present application;

[0049] Figure 8 A front view of a battery device provided for some embodiments of the present application, with the obscuring structure removed;

[0050] Figure 9 A structural view of an energy storage system provided for some embodiments of the present application;

[0051] Figure 10 A structural view of a charging network provided for some embodiments of the present application.

[0052] The meanings of the labels in the figures are as follows:

[0053] 1, energy storage device; 2, power conversion device; 3, power generation device; 4, charging pile; 5, connector;

[0054] 100, battery device;

[0055] 10, box; 11, first box; 12, second box; 13, maintenance opening;

[0056] 20, battery cell assembly; 21, battery cell; 211, shell; 212, end plate; 213, electrode assembly; 214, electrode terminal;

[0057] 30, fuse; 31, housing; 311, base; 3111, second clamping opening; 3112, sliding slot; 312, first supporting platform; 3121, accommodating cavity; 3122, first clamping body; 3123, first connecting part; 3124, fixing column; 3125, second clamping body; 3126, second connecting part; 313, second cover body; 3131, first main body part; 3132, first clamping opening; 3133, protruding part; 3134, fixing groove; 314, second cover body; 32, fuse body; 33, controller; 331, fixing hole.

[0058] 40, shielding structure. DETAILED DESCRIPTION

[0059] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "include" and "have" and any variations thereof used in the specification and the claims and the above description of drawings are intended to cover the non-exclusive inclusion.

[0061] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0062] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.

[0064] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0065] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, as well as military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the demand of its market is also increasing.

[0068] The fuse is a device used to protect the battery monomer, circuit or other electrical structure in the battery device to provide overcurrent protection and reduce the risk of thermal runaway. For power batteries, a part with smaller overcurrent area can be set on the conductive structure (such as the tab) as a fuse. For battery devices of energy storage systems, the current is usually large, and the requirements for the fuse are also higher, so the fuse in the battery device is usually an independent structure and has a large volume, and the fuse also has a larger demand for space.

[0069] For the battery device applied in the energy storage system, the fuse body is usually arranged in the electrical compartment and fixed on the beam body, and the controller is usually arranged at other positions different from the fuse body.

[0070] In case of fuse triggering resulting in the fuse being cut off, fuse failure, etc., the fuse needs to be repaired or replaced, and the state of the controller needs to be checked. In the current battery device, the controller and the fuse are usually not in the same location and are far apart. Therefore, the current inspection or repair of the fuse usually requires the fuse and the controller to be removed from different locations of the battery device, and other structures at different locations of the battery device also need to be removed, which is a relatively cumbersome process.

[0071] Based on the above considerations, in order to solve the problem of the current battery device that the process of replacing the fuse is cumbersome, the embodiments of the present application provide a battery device, which connects the shell of the fuse to the box and locates the shell in the box, connects the controller and the fuse to the shell, and makes the fuse and the controller detachably connected to the shell.

[0072] In such a battery device, the fuse and the controller are both located on the shell, that is, the fuse and the controller are located at the same location or a nearby location, so that the worker can detach the fuse and the controller from the same location, and only one part of the box needs to be detached to perform the detachment and installation of the fuse and the controller, which simplifies the maintenance and replacement process of the fuse and improves the efficiency of the maintenance and replacement of the fuse. At the same time, the fuse and the controller are both detachably connected to the shell, which facilitates the installation and detachment of the worker, further simplifies the maintenance and replacement process of the fuse, and improves the efficiency.

[0073] The battery device disclosed in the embodiments of the present application can be used in a power consumption device using the battery device as a power source or various energy storage systems using the battery as an energy storage element.

[0074] The following embodiments are described for convenience of illustration, taking a battery device 100 of an embodiment of the present application applied to an energy storage device 1 as an example.

[0075] Reference Figure 1 , Figure 1 The exploded structural schematic diagram of the battery device 100 provided by some embodiments of the present application is shown in FIG. 1.

[0076] The battery device 100 (Battery Apparatus) mentioned in the embodiments of the present application can include one or more battery assemblies for providing voltage and capacity. The battery assembly (Battery Cell Assembly) can include a plurality of battery monomers 21 connected in series, in parallel, or in a mixed connection through a busbar component.

[0077] In some embodiments, the battery assembly (Battery Cell Assembly) is usually formed by arranging a plurality of battery monomers 21.

[0078] As an example, the battery assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells 21 into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells 21 with a cable tie.

[0079] In some embodiments, the battery assembly can be a battery pack, which includes a case 10 and one or more battery assemblies, the battery assemblies being housed in the case 10.

[0080] As an example, the battery assembly can be a battery module, which can be housed in the case 10 by fixing the battery module in the case 10.

[0081] As an example, the battery assembly can also be housed in the case 10 by directly fixing a plurality of battery cells 21 to the case 10.

[0082] As an example, the case 10 can include a first case 11 and a second case 12. The first case 11 and the second case 12 are fastened so that an enclosed space is formed inside the case 10 to house the battery assembly. The enclosed here means covered or closed, which can be sealed or unsealed. The first case 11 can be a top cover or a bottom plate.

[0083] As an example, the case 10 can 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 an enclosed space is formed inside the case 10 to house the battery assembly.

[0084] In some embodiments, the case 10 can be part of the chassis structure of a vehicle. For example, part of the case 10 can be at least part of the floor of the vehicle, or part of the case 10 can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0085] Reference Figure 2 , Figure 2 A schematic diagram of the exploded structure of a battery cell 21 is provided for some embodiments of the present application. The battery cell 21 refers to the smallest unit that constitutes a battery. As shown in the figure, the battery cell 21 includes a casing 211, an end cover 212, an electrode assembly 213, and other functional components.

[0086] The end cover 212 refers to a component that covers the opening of the shell 211 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cover 212 can be adapted to the shape of the shell 211 to fit the shell 211. Optionally, the end cover 212 can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cover 212 is less likely to deform when subjected to extrusion collision, allowing the battery cell 21 to have higher structural strength and improved safety performance. The end cover 212 can be provided with functional components such as the electrode terminal 214. The electrode terminal 214 can be used to electrically connect with the electrode assembly 213 for outputting or inputting the electrical energy of the battery cell 21. In some embodiments, the end cover 212 can also be provided with a pressure relief structure for relieving the internal pressure of the battery cell 21 when the internal pressure or temperature reaches a threshold value. The material of the end cover 212 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon. In some embodiments, an insulating member can also be provided on the inner side of the end cover 212, which can be used to isolate the electrical connection components in the shell 211 from the end cover 212 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0087] The shell 211 is a component for fitting the end cover 212 to form the internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, the electrolyte and other components. The shell 211 and the end cover 212 can be independent components, and a maintenance opening can be provided on the shell 211, and the end cover 212 is covered on the maintenance opening to form the internal environment of the battery cell 21. Without limitation, the end cover 212 and the shell 211 can also be integrated, specifically, the end cover 212 and the shell 211 can form a common connecting surface before other components enter the shell, and when it is necessary to encapsulate the internal environment of the shell 211, the end cover 212 is covered on the shell 211. The shell 211 can be various shapes and various sizes, such as cuboid, cylinder, hexagonal prism, etc. Specifically, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 213. The material of the shell 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special limitations thereon.

[0088] The electrode assembly 213 is a component in which an electrochemical reaction occurs in the battery cell 21. One or more electrode assemblies 213 can be included inside the case 211. The electrode assembly 213 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute a main body of the electrode assembly 213, and portions without active materials that each constitute a tab. The positive electrode tab and the negative electrode tab can be located together at one end of the main body or at opposite ends of the main body. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminal 214 to form a current loop.

[0089] In a first aspect, with reference to Figure 4 、 Figure 5 , Figure 8 In an embodiment of the present application, a battery device 100 is provided, which includes a case 10, a battery cell assembly 20, and a fuse 30. The battery cell assembly 20 is accommodated in the case 10 and includes a plurality of battery cells 21 electrically connected to each other. The fuse 30 is provided in the case 10 and includes a housing 31, a fuse body 32, and a controller 33. The fuse body 32 is electrically connected to a circuit in which the plurality of battery cells 21 are electrically connected to each other, and is configured to be able to be disconnected to cut off the corresponding circuit. The controller 33 is configured to be able to control the on-off state of the fuse body 32. At least one of the fuse body 32 and the controller 33 is detachably connected to the housing 31.

[0090] The case 10 refers to a structure in the battery device 100 for providing a fixed base for the battery cells 21, electrical structures, and the fuse 30 and the like. The case 10 can be cuboid, cylindrical, or other shapes.

[0091] The battery cell assembly 20 refers to a structure in the battery device 100 for providing voltage and capacity. The battery device 100 can include one or more battery cell assemblies 20. One battery cell assembly 20 can include one or more battery cells. The battery cell 21 refers to the smallest unit that constitutes the battery device 100. In the case of a plurality of battery cells 21, the plurality of battery cells 21 can be connected in series, in parallel, or in a hybrid manner.

[0092] The fuse 30 refers to a device in the battery device 100 for protecting the battery cells 21, circuits, or other electronic components in the battery device 100, to provide overcurrent protection and reduce the risk of thermal runaway. In the case where the fuse 30 is electrically connected to the battery cells 21, the fuse 30 can be electrically connected to some two or some of the battery cells 21, or the fuse 30 can be electrically connected to each of the battery cells 21.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] The controller 33 refers to a structure in the fuse 30 for receiving an external signal and controlling the state of the fuse body 32 according to the signal. The controller 33 can control the on-off state of the fuse body 32 according to the received external signal. For example, in the case where the fuse 30 includes a cutting structure, the cutting structure can cut off the fuse body 32 to disconnect the circuit. The cutting structure can include a piston, an igniter, or the like. In this case, the controller 33 is configured to control the action of the cutting structure. For example, the controller 33 is an excitation controller.

[0099] In the case where the fuse 30 includes the controller 33, the fuse body 32 can be heated to a high temperature and melted when the current flowing therethrough is greater than a preset threshold, or the fuse body 32 can be cut off under the control of the controller 33.

[0100] In the current battery device 100, the circuit board of the controller 33 is usually located at a different position from the fuse body 32. In the case where the fuse 30 needs to be replaced or repaired, the worker needs to separately disassemble the controller 33 and the fuse body 32 at different positions, which is relatively cumbersome.

[0101] At least one of the fuse body 32 and the controller 33 is detachably connected to the shell 31. That is, only one of the fuse body 32 and the controller 33 can be detachably connected to the shell 31, or both the fuse body 32 and the controller 33 can be detachably connected to the shell 31. The fuse body 32 and the controller 33 can be detachably connected to the shell 31 by screwing, clamping, or other means, so as to facilitate the installation and disassembly of the worker and simplify the maintenance and replacement process of the fuse 30.

[0102] Accordingly, in the embodiment, the fuse body 32 and the controller 33 are both arranged on the shell 31, that is, the fuse body 32 and the controller 33 are located at the same position or a position close to each other, so that the worker can disassemble the fuse body 32 and the controller 33 from the same position, and the disassembly and installation of the fuse body 32 and the controller 33 can be performed by disassembling only one part of the box body 10, thereby simplifying the maintenance and replacement process of the fuse 30 and improving the efficiency of the maintenance and replacement of the fuse 30. Meanwhile, the fuse body 32 and the controller 33 are both detachably connected to the shell 31, so as to facilitate the installation and disassembly of the worker and further simplify the maintenance and replacement process of the fuse 30 and improve the efficiency.

[0103] Reference Figure 3 , Figure 4 In some embodiments, the shell 31 includes a base 311 connected to the box body 10, and the fuse body 32 is connected to the base 311. The shell 31 further includes a first bearing platform 312 connected to the base 311, and the controller 33 is connected to the first bearing platform 312.

[0104] The base 311 refers to a structure in the fuse 30 for providing a fixed base for structures such as the fuse body 32, and 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 box body 10 by welding, screwing or other means; the base 311 can be directly connected to the box body 10, or indirectly connected to the box body 10 through an intermediate structure; the material of the base 311 can include metal, plastic or other materials.

[0105] The first supporting platform 312 refers to a structure in the fuse 30 for bearing the controller 33, and the controller 33 can be mounted on the first supporting platform 312; the first supporting platform 312 can be a square plate body, a circular plate body, a prism, a cylinder, a prism, a circular platform or other shaped structure; the first supporting platform 312 is connected to the first cover body 313, and the first supporting platform 312 can be connected to the first cover body 313 by welding, bonding or other means, or the first supporting platform 312 can be integrally formed with the first cover body 313; the material of the first supporting platform 312 can include metal, plastic or other materials.

[0106] In addition to bearing the controller 33, the first supporting platform 312 can also separate the controller 33 and the fuse body 32, and in the case of high-temperature fusing of the fuse body 32, this arrangement can reduce the damage that the fuse body 32 may cause to the controller 33.

[0107] Only one of the fuse body 32 or the controller 33 can be detachably connected to the shell 31, or both the fuse body 32 and the controller 33 can be detachably connected to the shell 31.

[0108] In the case where the fuse body 32 is detachably connected to the shell 31, the fuse body 32 is detachably connected to the base 311, and the fuse body 32 can be detachably connected to the base 311 by screwing, clamping or other means; after the fuse 30 is triggered, the worker can only replace the fuse body 32, so that the fuse 30 can continue to be used.

[0109] In the case where the controller 33 is detachably connected to the shell 31, the controller 33 is detachably connected to the first supporting platform 312, and the controller 33 can be detachably connected to the first supporting platform 312 by screwing, clamping or other means; after the fuse 30 is triggered, the worker needs to disassemble and check the controller 33, and replace a new controller 33 according to the condition of the controller 33, so that the controller 33 is detachably connected to the first supporting platform 312, which can reduce the difficulty of disassembly and installation of the controller 33.

[0110] The embodiment provides specific structures of the shell 31, so that the shell 31 comprises a base 311 for carrying and fixing the fuse 32, and the shell 31 further comprises a first supporting platform 312 for carrying and fixing the controller 33, so that the controller 33 and the fuse 32 can be fixed at different positions of the shell 31, which facilitates dismounting and mounting of the staff and reduces negative influence of fuse breaking on the controller 33.

[0111] With reference to Figure 3 , Figure 4 In some embodiments, the shell 31 further comprises a second cover 314 connected to the first supporting platform 312, and the second cover 314 is used for covering at least part of the fuse 32.

[0112] The second cover 314 refers to a structure for protecting the fuse 32 in the shell 31, and the second cover 314 covers at least part of the fuse 32; the second cover 314 can completely cover the fuse 32, so that the second cover 314 can form a containing space together with the base 311 to completely cover and protect the fuse 32; the second cover 314 can also cover only part of the fuse 32, so that the second cover 314 can cover key parts or parts vulnerable to damage of the fuse 32; for example, the second cover 314 can cover connection parts of the fuse 32 and electrical connection structures of the base 311 or corresponding circuits, so as to reduce negative influence of external impurities or other structures on connection stability of the fuse 32.

[0113] The second cover 314 can be a plate-shaped structure, a box-shaped structure with one side open or other shaped structures; the material of the second cover 314 can comprise metal, plastic or other materials; for example, the second cover 314 can be a box-shaped insulating structure with one side open, and the open side is connected to the base 311 to form a containing space and contain at least part of the fuse 32.

[0114] The second cover 314 is connected to the first supporting platform 312, that is, the second cover 314 can be fixedly connected to the base 311 through the first supporting platform 312, and the second cover 314 can be synchronously dismounted together with the first supporting platform 312; the second cover 314 can be connected to the first supporting platform 312 through welding, bonding or other manners, or the second cover 314 can be integrally formed with the first supporting platform 312; for example, the second cover 314 is integrally formed with the first supporting platform 312.

[0115] In the case of needing to repair, overhaul or the like of the fuse 30, the first supporting platform 312 can be dismounted from the base 311, and at this time, the second cover 314 can also be dismounted synchronously, so as to facilitate the staff to dismount the fuse 32 and simplify the dismounting process of the fuse 32 and the controller 33.

[0116] In this embodiment, the second cover 314 is arranged to cover part of the melt 32, thereby protecting the melt 32 by the second cover 314; the second cover 314 is connected to the first support 312, so that the worker can simultaneously remove the first support 312 and the second cover 314, thereby simplifying the disassembly process.

[0117] With reference to Figure 3 、 Figure 4 In some embodiments in which the shell 31 includes the 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 shell 31 further includes a first cover 313 which is detachably connected to the first support 312 and covers the opening side of the receiving cavity 3121.

[0118] The receiving cavity 3121 refers to a groove-shaped structure arranged on the first support 312, which can form an open-ended space structure on the first support 312, and is used to receive at least 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.

[0119] The controller 33 is received in the receiving cavity 3121, and the controller 33 can be only partially received in the receiving cavity 3121, or can be completely received in the receiving cavity 3121; in the receiving cavity 3121, the controller 33 can be directly connected to the inner wall of the receiving cavity 3121, or can be indirectly connected to the inner wall of the receiving cavity 3121 through an intermediate structure; the controller 33 can be connected to the inner wall of the receiving cavity 3121 by screwing, clamping or other means.

[0120] The first cover 313 refers to a structure in the fuse 30 for protecting the controller 33, which covers the opening side of the receiving cavity 3121 to form an internal space separated from the outside on the first support 312, and the controller 33 is received in the internal space; both the first cover 313 and the first support 312 can protect the controller 33.

[0121] The first cover 313 can be a plate-shaped structure, a box-shaped structure with one side open, 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-shaped insulating structure with one side open, and the opening side is connected to the first support 312 to form an internal space separated from the outside and used to receive the controller 33.

[0122] 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, clamping or other means. This arrangement facilitates the disassembly of the first cover 313, thereby facilitating the replacement of the controller 33 by the staff.

[0123] The embodiment provides specific structures of the shell 31, so that the shell 31 comprises the first cover 313, and the controller 33 is accommodated in the accommodation cavity 3121 of the first support 312. The first cover 313 covers the accommodation cavity 3121, so as to form an internal space through the first cover 313 and the inner wall of the accommodation cavity 3121, and separate the controller 33 from the external space, thereby playing a role in protecting the controller 33. Meanwhile, the first cover 313 is detachably connected to the first support 312, so as to facilitate the installation and disassembly of the controller 33.

[0124] Reference Figures 3 to 5 In some embodiments in which the shell 31 comprises the first cover 313, the first cover 313 comprises a first main body part 3131, and the first main body part 3131 is provided with a first clamping opening 3132. The first support 312 is provided with a first clamping body 3122, and the first clamping body 3122 is capable of moving relative to the first support 312, so as to be inserted into or withdrawn from the first clamping opening 3132.

[0125] The first main body part 3131 refers to a part of the first cover 313 for covering and protecting the controller 33. The first main body part 3131 also serves as a carrier of the first clamping opening 3132 and other structures. The first main body part 3131 can be a plate-shaped structure, a box-shaped structure with one end open, or a structure of other shapes. The material of the first main body part 3131 can include metal, plastic or other materials.

[0126] The first clamping opening 3132 refers to a clamping structure provided on the first main body part 3131, and is used in cooperation with the first clamping body 3122. The first clamping opening 3132 can be a hole structure penetrating through the first main body part 3131, or a slot structure not penetrating through the first main body part 3131. The shape of the first clamping opening 3132 can be circular, square or other shapes. The number of the first clamping opening 3132 can be one, two or more.

[0127] The first clamping body 3122 refers to a structure on the first support 312 for cooperating with the first clamping opening 3132 to fix the first main body part 3131. The first clamping body 3122 can be a columnar structure, a plate-shaped structure or a structure of other shapes. The material of the first clamping body 3122 can include metal, plastic or other materials. The material of the first clamping body 3122 can be the same as or different from the material of the first support 312.

[0128] The first clamping body 3122 is connected to the first supporting platform 312 and is movable relative to the first supporting platform 312, so that the first clamping body 3122 can be inserted into or withdrawn from the first clamping hole 3132; when the first clamping body 3122 is inserted into the first clamping hole 3132, the first main body part 3131 can be fixed on the first supporting platform 312, and when the first clamping body 3122 is withdrawn from the first clamping hole 3132, the first main body part 3131 can be separated from the first supporting platform 312.

[0129] When the first clamping body 3122 is inserted into the first clamping hole 3132, in order to stably fix the first main body part 3131, there should be no gap or a small gap between the first clamping body 3122 and the inner wall of the first clamping hole 3132; for example, each side of the first clamping body 3122 perpendicular to the moving direction of the first clamping body 3122 can abut against the inner wall of the corresponding first clamping hole 3132; for example, in the direction perpendicular to the moving direction of the first clamping body 3122, the cross-sectional shape of the first clamping body 3122 is the same as the shape of the first clamping hole 3132.

[0130] The first clamping body 3122 can be movably connected to the first supporting platform 312 in various ways. The first clamping body 3122 can be directly connected to the first supporting platform 312; for example, a groove structure can be provided on the first supporting platform 312, and the first clamping body 3122 is slidably connected in the groove structure, so that the first clamping body 3122 moves along the groove structure to be inserted into or withdrawn from the first clamping hole 3132; for example, a guide rail structure can be provided on the first supporting platform 312, and the first clamping body 3122 is slidably connected to the guide rail structure, so that the first clamping body 3122 moves along the guide rail structure to be inserted into or withdrawn from the first clamping hole 3132. The first clamping body 3122 can also be indirectly connected to the first supporting platform 312; for example, the first clamping body 3122 can be indirectly connected to the first supporting platform 312 through an elastic structure, so that the first clamping body 3122 moves relative to the first supporting platform 312 to deform the elastic structure; for example, the first clamping body 3122 can also be indirectly connected to the first supporting platform 312 through a flexible structure, so that the first clamping body 3122 moves relative to the first supporting platform 312 to deform the flexible structure.

[0131] When the first cover body 313 is fixed on the first supporting platform 312, the first clamping body 3122 is inserted into the first clamping hole 3132; when the first cover body 313 needs to be disassembled, the worker can withdraw the first clamping body 3122 from the first clamping hole 3132, and then take out the first cover body 313; when the first cover body 313 needs to be assembled, the worker can first move the first clamping body 3122 away from the first clamping hole 3132, and then insert the first clamping body 3122 into the first clamping hole 3132.

[0132] The embodiment provides specific structures of the first cover body 313. The first clamping hole 3132 is arranged on the first cover body 313, and the first clamping body 3122 is correspondingly arranged on the first supporting table 312, so that the first clamping body 3122 can be inserted into the first clamping hole 3132, and the first cover body 313 is fixed by cooperation of the first clamping body 3122 and the first clamping hole 3132; and the first clamping body 3122 can move relative to the first supporting table 312, so that the first clamping body 3122 can be withdrawn from the first clamping hole 3132, thereby facilitating dismounting and mounting of the first cover body 313.

[0133] Reference Figures 3 to 5 In the embodiment in which the first clamping body 3122 is arranged on the first supporting table 312, the first supporting table 312 is provided with the first connecting part 3123 having elasticity, and the first clamping body 3122 is arranged on the first connecting part 3123; and the first clamping body 3122 can be inserted into the first clamping hole 3132 under the action of the first connecting part 3123.

[0134] The first connecting part 3123 refers to a structure for connecting the first clamping body 3122 to the first main body part 3131 on the first supporting table 312; the first connecting part 3123 is an elastic structure, the first connecting part 3123 can be a plate body, a column body or the like having elasticity, or the first connecting part 3123 can be a screw structure (for example, a spring); the number of the first connecting part 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 that of the first supporting table 312.

[0135] One end of the first connecting part 3123 is connected to the first supporting table 312, and the other end of the first connecting part 3123 is connected to the first clamping body 3122, so that the first clamping body 3122 can be indirectly connected to the first supporting table 312 through the first connecting part 3123; the first connecting part 3123 can be connected to the first supporting table 312 by welding, bonding or the like, or the first connecting part 3123 can be integrally formed with the first supporting table 312; and the first clamping body 3122 can be connected to the first connecting part 3123 by welding, bonding or the like, or the first clamping body 3122 can be integrally formed with the first connecting part 3123.

[0136] The first connecting part 3123 can be inserted into the first card hole 3132 under the action of the first connecting part 3123, that is, the force of the first connecting part 3123 to the first connecting part 3122 points to the first card hole 3132; because the first connecting part 3123 is located between the first connecting part 3122 and the first supporting table 312, during the movement of the first connecting part 3122 away from the first card hole 3132, the first connecting part 3123 is compressed and deformed and provides a force to the first connecting part 3122 in the direction of the first card hole 3132, and in the case that the first connecting part 3122 is opposite to the first card hole 3132, the first connecting part 3123 is compressed and deformed to provide a force to the first connecting part 3122 in the direction of the first card hole 3132.

[0137] In the case that the first connecting part 3122 is inserted into the first card hole 3132, the first connecting part 3123 can be in a natural state, at this time the first connecting part 3122 is not subjected to the force of the first connecting part 3123, but in the case that the first connecting part 3122 moves in the direction of exiting the first card hole 3132, the first connecting part 3123 will apply a force to the first connecting part 3122 in the direction of the first card hole 3132 to hinder the first connecting part 3122 from exiting the first card hole 3132, so that the first cover body 313 can be more stably fixed on the first supporting table 312.

[0138] In the case that the first connecting part 3122 is inserted into the first card hole 3132, the first connecting part 3123 can also be in a compressed state, at this time the first connecting part 3123 will apply a force to the first connecting part 3122 in the direction of the first card hole 3132 to enable the first connecting part 3122 to be more stably located in the first card hole 3132, so that the first cover body 313 can be more stably fixed on the first supporting table 312.

[0139] In the case that the staff needs to disassemble the first cover body 313, the staff can press the first connecting part 3123 to deform away from the first card hole 3132 to enable the first connecting part 3122 to exit the first card hole 3132; in the case that the staff needs to install the first cover body 313, the staff can press the first connecting part 3123 to deform away from the first card hole 3132, then place the first cover body 313 at the corresponding position of the first supporting table 312, and release the first connecting part 3123 when the first connecting part 3122 is opposite to the first card hole 3132, at this time the first connecting part 3123 resets and enables the first connecting part 3122 to be inserted into the first card hole 3132.

[0140] The embodiment provides specific structures of the first cover body 313, and the first connecting part 3123 is arranged, so that the first clamping body 3122 can be moved relative to the first main body part 3131 through the first connecting part 3123, and the first clamping body 3122 can be inserted into or withdrawn from the first clamping opening 3132; the first connecting part 3123 can not only enable the first clamping body 3122 to be inserted into the first clamping opening 3132 to fix the first cover body 313, but also enable the first clamping body 3122 to be withdrawn from the first clamping opening 3132 by pressing the first connecting part 3123, so that the first cover body 313 can be disassembled and assembled conveniently.

[0141] Reference Figures 3 to 5 In the embodiment in which the first clamping opening 3132 is arranged on the first cover body 313, the first clamping opening 3132 is at least two, and the at least two first clamping openings 3132 are arranged on the circumferential side of the first main body part 3131 and located on different sides of the first main body part 3131; the first clamping body 3122 is multiple, and the multiple first clamping bodies 3122 are located on different sides of the first bearing platform 312 and matched with different first clamping openings 3132.

[0142] The first clamping opening 3132 is at least two, and the number of the first clamping opening 3132 can be two, three or more; accordingly, the number of the first clamping body 3122 can also be two, three or more.

[0143] The at least two first clamping openings 3132 are arranged on the circumferential side of the first main body part 3131 and located on different sides, and accordingly, the at least two first clamping bodies 3122 are arranged on the circumferential side of the first bearing platform 312 and located on different sides, that is, the first clamping body 3122 is also located on different sides of the first main body part 3131, so that the first clamping body 3122 and the first clamping opening 3132 on different sides can stably fix the first cover body 313 on the first bearing platform 312, thereby improving the connection stability of the first cover body 313.

[0144] In the embodiment, the first clamping opening 3132 is at least two, and the at least two first clamping openings 3132 are located on different sides of the first main body part 3131, and the first clamping body 3122 is arranged correspondingly to the first clamping opening 3132, so that the first clamping body 3122 can fix different sides of the first main body part 3131 in cooperation with the first clamping opening 3132, thereby improving the connection stability of the first cover body 313.

[0145] Reference Figures 3 to 5 In some embodiments, the first main body part 3131 is further provided with a protruding part 3133, and the protruding part 3133 is configured to abut the base 311 in the mounting direction of the first cover body 313.

[0146] The protruding portion 3133 refers to a structure for limiting on the first body portion 3131, the protruding portion 3133 extends outward from the first body portion 3131, the shape of the protruding portion 3133 can be a square plate, a semicircular plate, a prism, a prism, or other shapes; the protruding portion 3133 can be connected to the first body portion 3131 by welding, bonding or other means, the protruding portion 3133 can also be integrally formed with the first body portion 3131; the material of the protruding portion 3133 can include metal, plastic or other materials, the material of the protruding portion 3133 can be the same as that of the first body portion 3131, or it can be different.

[0147] The number of protruding portions 3133 can be one, two or more, in the case of two or more protruding portions 3133, each protruding portion 3133 can be located on a different side of the first body portion 3131.

[0148] The protruding portion 3133 can be abutted on the base 311 along the installation direction of the first cover body 313 to prevent the first cover body 313 from continuing to move; since the first cover body 313 is mainly used to cooperate with the first bearing platform 312 to form an internal space to accommodate and protect the controller 33, the installation direction of the first cover body 313 is the direction close to the controller 33, so the protruding portion 3133 is provided to limit the displacement of the first cover body 313 by the protruding portion 3133, to reduce the risk of collision and pressing the controller 33 caused by excessive movement of the first cover body 313.

[0149] For example, the first cover body 313 can be installed on the first bearing platform 312 from top to bottom along the direction of gravity, at this time the opening of the accommodating cavity 3121 faces upward, in the case that the first cover body 313 is connected to the first bearing platform 312, the protruding portion 3133 abuts on the upper side of the first bearing platform 312 to limit the movement of the first cover body 313.

[0150] In this embodiment, the protruding portion 3133 is provided on the first body portion 3131 to limit the displacement of the first cover body 313 by the protruding portion 3133, to reduce the risk of damage to the controller 33 caused by position deviation of the first cover body 313 during installation, and to reduce the interference and collision between the first cover body 313 and the first bearing platform 312 during installation, thereby reducing the possible damage between the first cover body 313 and the first bearing platform 312, and reducing the possible damage to the controller 33 caused by the first cover body 313 during installation.

[0151] Reference Figure 3 , Figure 4 In some embodiments, the first bearing platform 312 is provided with a fixing column 3124, at least part of the fixing column 3124 supports the controller 33.

[0152] The fixed column 3124 refers to a structure on the first bearing platform 312 for supporting the controller 33. The fixed column 3124 can be a prismatic column, a cylindrical column, a prismatic frustum, a circular frustum, or other shapes. The fixed column 3124 is connected to the first bearing platform 312, and can be connected to the first bearing platform 312 by welding, bonding, or other means. The fixed column 3124 can be formed with the first bearing platform 312. The number of fixed columns 3124 can be one, two, or more. The material of the fixed column 3124 can include metal, plastic, or other materials. The material of the fixed column 3124 can be the same as or different from that of the first bearing platform 312.

[0153] When the first bearing platform 312 is provided with a receiving cavity 3121, the fixed column 3124 can be located in the receiving cavity 3121, so that the controller 33 can be accommodated in the receiving cavity 3121.

[0154] The fixed column 3124 is used to support the controller 33, i.e., the controller 33 is located on the fixed column 3124, and the controller 33 can be connected to the fixed column 3124 by clamping, screwing, or other means. The fixed column 3124 can make the controller 33 in a suspended state away from the first bearing platform 312, so as to reduce the contact area between the controller 33 and the first bearing platform 312, thereby reducing the damage to the controller 33 caused by the collision of the first bearing platform 312. At the same time, in the case of high-temperature melting of the melt 32, this arrangement can also reduce the temperature transmitted to the controller 33, thereby protecting the controller 33 and facilitating better heat dissipation of the controller 33.

[0155] When the first bearing platform 312 is provided with a receiving cavity 3121, the fixed column 3124 can be located in the receiving cavity 3121, so that the controller 33 can be accommodated in the receiving cavity 3121.

[0156] In this embodiment, the fixed column 3124 is provided on the first bearing platform 312 to support the controller 33, thereby reducing the contact area between the controller 33 and the first bearing platform 312, and reducing the damage caused by the friction between the controller 33 and the first bearing platform 312. The fixed column 3124 also provides a heat dissipation space for the bottom of the controller 33.

[0157] Reference Figures 3 to 5 In some embodiments in which the first bearing platform 312 is provided with the fixed column 3124, the controller 33 is provided with a fixed hole 331, a portion of the fixed column 3124 passes through the fixed hole 331, and another portion of the fixed column 3124 abuts against the controller 33.

[0158] The fixing hole 331 refers to a hole structure provided on the controller 33. The fixing hole 331 can be a square hole, a round hole or a hole structure of other shapes. The fixing hole 331 can be a straight hole, a stepped hole, a tapered hole or a hole structure of other shapes.

[0159] The fixing hole 331 is used in cooperation with the fixing column 3124, so that a part of the fixing column 3124 can pass through the fixing hole 331. The part of the fixing column 3124 passing through the fixing hole 331 can limit the displacement of the controller 33 in the radial direction of the fixing column 3124. The part of the fixing column 3124 passing through the fixing hole 331 can abut against the inner wall of the fixing hole 331 or be spaced apart from the inner wall of the fixing hole 331.

[0160] Another part of the fixing column 3124 can abut against the controller 33 at the edge of the fixing hole 331. The part of the fixing column 3124 abutting against the controller 33 can support the controller 33 in the axial direction of the fixing column 3124. In the case where the part of the fixing column 3124 abuts against the edge of the fixing hole 331, the part of the fixing column 3124 can also limit the movement of the fixing column 3124 in the radial direction of the fixing column 3124.

[0161] Accordingly, the fixing column 3124 can be a circular truncated cone, a prism truncated cone, a circular cone or a circular truncated cone structure. In this case, the diameter of a part of the fixing column 3124 is equal to the inner diameter of the fixing hole 331. The part of the fixing column 3124 abuts against the edge of the fixing hole 331 to support the fixing column 3124 and limit the displacement of the controller 33 in the radial direction of the fixing column 3124. In this case, the part of the fixing column 3124 with a smaller diameter can be located in the fixing hole 331 or pass through the fixing hole 331.

[0162] The fixing column 3124 can also be a stepped structure. In this case, the fixing column 3124 can include two parts with different diameters. The part with a smaller diameter can be located in the fixing hole 331 or pass through the fixing hole 331. The part with a smaller diameter 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 part with a larger diameter can be located on one side of the fixing hole 331 and abut against the controller 33 to support the controller 33.

[0163] The number of the fixing holes 331 can be one, two or more. Since the fixing holes 331 are used in cooperation with the fixing columns 3124, the number of the fixing holes 331 can be the same as the number of the fixing columns 3124 or more than the number of the fixing columns 3124.

[0164] For example, the number of the fixing holes 331 is four and they are located at the four corners of the controller 33 respectively, and the number of the fixing columns 3124 is also four and they are opposite to the four fixing holes 331 respectively; the fixing column 3124 is a conical structure, a part of the fixing column 3124 can extend into the fixing hole 331, and another part of the fixing column 3124 can support and resist the controller 33 from below.

[0165] The embodiment provides a structure of fixing the controller 33 by some fixing columns 3124, the fixing holes 331 are arranged on the controller 33, a part of the fixing column 3124 passes through the fixing hole 331, so that the relative displacement of the controller 33 is limited by the part, thereby playing a role of fixing the controller 33; and another part of the fixing column 3124 supports the controller 33, so that the contact between the controller 33 and the inner wall of the accommodating cavity 3121 is reduced.

[0166] Reference Figures 3 to 5 In some embodiments, the first cover body 313 is provided with a fixing groove 3134 opposite to the fixing column 3124 on the side facing the first support platform 312, and the part of the fixing column 3124 extending through the fixing hole 331 is inserted into the fixing groove 3134.

[0167] The fixing groove 3134 refers to a groove structure arranged on the first cover body 313, and the fixing groove 3134 can be a groove structure arranged on the first cover body 313 or a groove structure surrounded by other structures arranged on the first cover body 313; for example, a sleeve structure is arranged on the first cover body 313, 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 the fixing groove 3134 can be one, two or more.

[0168] The fixing groove 3134 is used for accommodating the part of the fixing column 3124 extending through the fixing hole 331, so the fixing groove 3134 should be arranged on the side of the first cover body 313 facing the fixing column 3124, that is, the side of the first cover body 313 facing the first support platform 312; the part of the fixing column 3124 extending through the fixing hole 331 can be accommodated in the fixing groove 3134, so as to limit the displacement of the first cover body 313 and guide the installation of the first cover body 313.

[0169] During the installation of the first cover body 313 on the first support platform 312, the fixing groove 3134 is opposite to the fixing column 3124, the first cover body 313 can be buckled on the first support platform 312 along the axial direction of the fixing column 3124, and the first clamping body 3122 can be inserted into the first clamping hole 3132.

[0170] In this embodiment, a fixing groove 3134 is arranged on the first cover 313 opposite to the fixing column 3124, and the fixing column 3124 can be inserted into the fixing groove 3134, and at this time, the fixing column 3124 can also play a role of guiding and assisting in determining the position of the first cover 313 during the installation of the first cover 313; at the same time, the fixing column 3124 can also play a role of limiting the displacement of the first cover 313, so that the first cover 313 can be more stably connected to the first support 312.

[0171] Reference Figures 3 to 5 In some embodiments, the base 311 is provided with a second clamping opening 3111; the first support 312 is movably connected with a second clamping body 3125, and the second clamping body 3125 can move relative to the first support 312 to be inserted into or withdrawn from the second clamping opening 3111.

[0172] The second clamping opening 3111 refers to a clamping structure arranged on the base 311, which is used in cooperation with the second clamping body 3125 of the first support 312; the second clamping opening 3111 can be a hole structure penetrating through the base 311, or a slot structure not penetrating through the base 311; the shape of the second clamping opening 3111 can be circular, square or other shapes; the number of the second clamping opening 3111 can be one, two or more.

[0173] The second clamping body 3125 refers to a structure in the first support 312 for cooperating with the second clamping opening 3111 to fix the first support 312; the second clamping body 3125 can be a columnar structure, a plate-like structure or other shaped structures; the material of the second clamping body 3125 can include metal, plastic or other materials, and the material of the second clamping body 3125 can be the same as or different from that of the first support 312.

[0174] The second clamping body 3125 is connected to the first support 312 and can move relative to the first support 312, so that the second clamping body 3125 can be inserted into or withdrawn from the second clamping opening 3111; when the second clamping body 3125 is inserted into the second clamping opening 3111, the first support 312 can be fixed on the base 311, and when the second clamping body 3125 is withdrawn from the second clamping opening 3111, the first support 312 can be separated from the base 311.

[0175] In the case that the second clamping body 3125 is inserted into the second clamping opening 3111, in order for the first support 312 to be more stably fixed, there should be no gap or a smaller gap between the second clamping body 3125 and the inner wall of the second clamping opening 3111; for example, each side of the second clamping body 3125 perpendicular to the moving direction of the second clamping body 3125 can abut against the inner wall of the corresponding second clamping opening 3111; for example, in the direction perpendicular to the moving direction of the second clamping body 3125, the cross-sectional shape of the second clamping body 3125 is the same as the shape of the second clamping opening 3111.

[0176] The second clamping body 3125 can be movably connected to the first supporting platform 312 in various ways. The second clamping body 3125 can be directly connected to the first supporting platform 312. For example, a groove structure can be arranged on the first supporting platform 312, and the second clamping body 3125 is slidably connected in the groove structure. In this case, the second clamping body 3125 can be inserted into or withdrawn from the second clamping hole 3111 by moving along the groove structure. For example, a guide rail structure can be arranged on the first supporting platform 312, and the second clamping body 3125 is slidably connected to the guide rail structure. In this case, the second clamping body 3125 can be inserted into or withdrawn from the second clamping hole 3111 by moving along the guide rail structure. The second clamping body 3125 can also be indirectly connected to the first supporting platform 312. For example, the second clamping body 3125 can be indirectly connected to the first supporting platform 312 through a resilient structure. In this case, the second clamping body 3125 can deform the resilient structure by moving relative to the first supporting platform 312. For example, the second clamping body 3125 can also be indirectly connected to the first supporting platform 312 through a flexible structure. In this case, the second clamping body 3125 can deform the flexible structure by moving relative to the first supporting platform 312.

[0177] When the first supporting platform 312 is fixed to the base 311, the second clamping body 3125 is inserted into the second clamping hole 3111. When the first supporting platform 312 needs to be disassembled, the worker can make the second clamping body 3125 exit the second clamping hole 3111, that is, make the second clamping body 3125 move towards the second main body part, and then take out the first supporting platform 312. When the first supporting platform 312 needs to be installed, the worker can first make the second clamping body 3125 move towards the second main body part, and then make the second clamping body 3125 insert into the second clamping hole 3111.

[0178] In this embodiment, the second clamping body 3125 is arranged on the first supporting platform 312, and the second clamping hole 3111 is arranged on the base 311. The second clamping body 3125 can be inserted into the second clamping hole 3111, so that the first supporting platform 312 is fixed on the base 311 through the cooperation of the second clamping body 3125 and the second clamping hole 3111. The second clamping body 3125 can move relative to the first supporting platform 312, so that the second clamping body 3125 can exit the second clamping hole 3111, thereby facilitating the disassembly and installation of the first supporting platform.

[0179] Reference Figures 3 to 5 In some embodiments, the first supporting platform 312 is provided with a second connecting part 3126 having elasticity, and the second clamping body 3125 is arranged on the second connecting part 3126. The second clamping body 3125 can be inserted into the second clamping hole 3111 under the action of the second connecting part 3126.

[0180] The second connecting part 3126 refers to a structure on the first bearing platform 312 for connecting the second clamping body 3125 to the first bearing platform 312. The second connecting part 3126 is an elastic structure. The second connecting part 3126 can be a plate body, a column body or the like with elasticity. The second connecting part 3126 can also be a spiral structure (e.g., a spring). The number of the second connecting part 3126 can be one, two or more. The material of the second connecting part 3126 can include metal, plastic or other materials. The material of the second connecting part 3126 can be the same as or different from that of the first bearing platform 312.

[0181] One end of the second connecting part 3126 is connected to the first bearing platform 312, and the other end of the second connecting part 3126 is connected to the second clamping body 3125, so that the second clamping body 3125 can be indirectly connected to the first bearing platform 312 through the second connecting part 3126. The second connecting part 3126 can be connected to the first bearing platform 312 by welding, bonding or the like, or can be integrally formed with the first bearing platform 312. The second clamping body 3125 can be connected to the second connecting part 3126 by welding, bonding or the like, or can be integrally formed with the second connecting part 3126.

[0182] The second clamping body 3125 can be inserted into the second clamping opening 3111 under the action of the second connecting part 3126, that is, the force of the second connecting part 3126 under pressure deformation is directed to the second clamping body 3125. Since the second connecting part 3126 is located between the second clamping body 3125 and the first bearing platform 312, during the movement of the second clamping body 3125 close to the first bearing platform 312, the second connecting part 3126 is deformed under pressure and provides a force to the second clamping body 3125 in a direction away from the first bearing platform 312. In the case where the second clamping body 3125 is opposite to the second clamping opening 3111, the second connecting part 3126 deformed under pressure provides a force to the second clamping body 3125 in the direction of the second clamping opening 3111.

[0183] When the second clamping body 3125 is inserted into the second clamping opening 3111, the second connecting part 3126 can be in a natural state, at which time the second clamping body 3125 is not subjected to the force of the second connecting part 3126. However, when the second clamping body 3125 moves in a direction away from the second clamping opening 3111, the second connecting part 3126 will apply a force to the second clamping body 3125 in the direction of the second clamping opening 3111 to hinder the second clamping body 3125 from exiting the second clamping opening 3111, so that the first bearing platform 312 can be more stably fixed on the base 311.

[0184] In the case that the second card body 3125 is inserted into the second card slot 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, which is directed to the second card slot 3111, so that the second card body 3125 can be more stably located in the second card slot 3111, thereby making the first supporting platform 312 more stably fixed on the base 311.

[0185] In the case that the staff needs to disassemble the first supporting platform 312, the staff can press the second connecting part 3126 to deform in the direction close to the first supporting platform 312, so that the second card body 3125 exits the second card slot 3111; in the case that the staff needs to install the first supporting platform 312, the staff can press the second connecting part 3126 to deform in the direction close to the first supporting platform 312, and then release the second connecting part 3126 when the second card body 3125 is opposite to the second card slot 3111, at this time the second connecting part 3126 resets and makes the second card body 3125 inserted into the second card slot 3111.

[0186] In the embodiment, the second connecting part 3126 is provided, which makes the second card body 3125 movable relative to the first supporting platform 312, so that the second card body 3125 can be inserted into or exited from the second card slot 3111; the second connecting part 3126 can not only make the second card body 3125 inserted into the second card slot 3111 to fix the first supporting platform 312, but also can make the second card body 3125 exited from the second card slot 3111 by pressing the second connecting part 3126, so as to facilitate the disassembly and installation of the first supporting platform 312.

[0187] Reference Figures 3 to 5 In some embodiments, the number of the second connecting parts 3126 is at least two and is respectively arranged on the opposite sides of the first supporting platform 312, at least part of the second connecting parts 3126 on the two sides of the first supporting platform 312 can deform and move close to each other, so that the corresponding second card body 3125 exits the second card slot 3111.

[0188] The number of the second connecting parts 3126 is at least two, that is, the number of the second connecting parts 3126 can be two, or three or more, since one end of the second connecting part 3126 is connected to the second card body 3125, in the case that there are multiple second connecting parts 3126, the number of the second card bodies 3125 can also be multiple, at this time the number of the second card slots 3111 can also be multiple.

[0189] In the case that the number of the second connecting portions 3126 is at least two, each second connecting portion 3126 is arranged at the two sides of the first supporting platform 312, the corresponding second clamping body 3125 is also located at the opposite sides of the first supporting platform 312, and the second clamping hole 3111 corresponding to the second clamping body 3125 is also arranged at the opposite sides of the first supporting platform 312. At this time, the first supporting platform 312 can be more stably and balancedly fixed on the base 311 through the second clamping body 3125 and the second clamping hole 3111 at the two sides.

[0190] Since the second connecting portion 3126 can drive the second clamping body 3125 to exit the corresponding second clamping hole 3111 when it is deformed to approach the first supporting platform 312, in the case that each second connecting portion 3126 is located at the opposite sides of the first supporting platform 312, the second connecting portions 3126 at the two sides of the first supporting platform 312 can be moved to approach each other to drive each second clamping body 3125 to exit the corresponding second clamping hole 3111.

[0191] In the case that the staff needs to disassemble the first supporting platform 312, the fingers of the staff can be pressed on each second connecting portion 3126 at the two sides of the first supporting platform 312, and then the fingers are folded inward to press each second connecting portion 3126 to deform in the direction of approaching the first supporting platform 312, so as to drive each second clamping body 3125 to exit the corresponding second clamping hole 3111.

[0192] In the case that the staff needs to install the first supporting platform 312, the staff can first press each second connecting portion 3126 inward, and then place the first supporting platform 312 at the corresponding position of the base 311. In the case that each second clamping body 3125 is opposite to the corresponding second clamping hole 3111, the second connecting portion 3126 can be released at this time. The second connecting portion 3126 is reset and drives the second clamping body 3125 to be inserted into the second clamping hole 3111.

[0193] In the embodiment, the number of the second connecting portions 3126 is at least two, and at least two second connecting portions 3126 are located at the opposite sides of the first supporting platform 312. Meanwhile, the second clamping body 3125 and the second clamping hole 3111 are correspondingly arranged, so that the second clamping body 3125 can cooperate with the second clamping hole to fix different sides of the first supporting platform 312, thereby improving the connection stability of the first supporting platform 312.

[0194] Reference Figures 3 to 6 In some embodiments, the base 311 is provided with a sliding groove 3112, at least part of the second connecting portion 3126 is slidably arranged in the sliding groove 3112 and can move relative to the sliding groove 3112. The second connecting portion 3126 abuts against at least one inner wall of the sliding groove 3112.

[0195] The sliding groove 3112 refers to a groove structure arranged on the base 311; in a direction perpendicular to the extending direction of the sliding groove 3112, the cross-sectional shape of the sliding groove 3112 can be square, semicircular or other shapes; according to the number of the second connecting portions 3126, the number of the sliding grooves 3112 can be one, two or more.

[0196] In the case where the second connecting portions 3126 are multiple and located on opposite sides of the first bearing platform 312, the sliding grooves 3112 are also multiple and located on opposite sides of the first bearing platform 312, respectively, to correspond to the respective second connecting portions 3126.

[0197] The sliding groove 3112 is used to accommodate at least part of the second connecting portion 3126, that is, the second connecting portion 3126 can be only partially accommodated in the sliding groove 3112, or the second connecting portion 3126 can be completely accommodated in the sliding groove 3112; for example, part of the second connecting portion 3126 is accommodated in the sliding groove 3112, at which time the worker can press the part of the second connecting portion 3126 outside the sliding groove 3112 to facilitate the installation and disassembly of the first bearing platform 312.

[0198] The second connecting portion 3126 can move relative to the sliding groove 3112, so that the second connecting portion 3126 can enter or exit the sliding groove 3112 to facilitate the installation or disassembly of the first bearing platform 312; the second connecting portion 3126 can abut against at least one inner wall of the sliding groove 3112, at which time the inner wall of the sliding groove 3112 can play a role in assisting the fixation of the second connecting portion 3126, and further play a role in assisting the fixation of the first bearing platform 312.

[0199] According to the relative positions of the second connecting portion 3126 and the sliding groove 3112, the second clamping opening 3111 can be located on the inner wall of the sliding groove 3112, or the second clamping opening 3111 can be located at other positions of the base 311.

[0200] For example, the second clamping opening 3111 is arranged on the inner wall of the sliding groove 3112, in the case where the second connecting portion 3126 is inserted into the corresponding second clamping opening 3111, at least part of the second connecting portion 3126 is accommodated in the sliding groove 3112, and the part of the second connecting portion 3126 outside the sliding groove 3112 is used for the worker to press.

[0201] In this embodiment, the sliding groove 3112 is arranged on the base 311 to accommodate at least part of the second connecting portion 3126 through the sliding groove 3112, so that the inner wall of the sliding groove 3112 can play a role in fixing and supporting the first connecting portion 3123, and the first bearing platform 312 is supported by the inner wall of the sliding groove 3112 and the second connecting portion 3126, to improve the stability of the fixation of the first bearing platform 312.

[0202] Reference Figure 7 ,Figure 8 In some embodiments, the box 10 is provided with a maintenance opening 13, and the fuse 30 is arranged in the box 10 opposite the maintenance opening 13. The box 10 is further detachably connected with a shielding structure 40, and the shielding structure 40 covers the maintenance opening 13.

[0203] The maintenance opening 13 refers to an opening structure arranged on the box 10. The maintenance opening 13 penetrates the box 10, so that the internal space of the box 10 can communicate with the space outside the box 10. The maintenance opening 13 can be square, circular or other shapes. The number of the maintenance opening 13 can be one, two or more. The maintenance opening 13 can be arranged on the first box 11, or on the second box 12, or on both the first box 11 and the second box 12.

[0204] The fuse 30 is arranged in the box 10 opposite the maintenance opening 13, that is, the fuse 30 is located near or opposite the maintenance opening 13, so that the worker can install and remove the fuse 32 and the controller 33 from the maintenance opening 13 without disassembling the box 10.

[0205] The shielding structure 40 refers to a structure for shielding the maintenance opening 13 in the battery device 100. The shielding structure 40 can include a cover plate and other structures specially used for shielding the maintenance opening 13. The shielding structure 40 can include a battery monitoring unit (CSC), an input and output interface of the battery device 100 and other structures. In this case, these structures can shield the maintenance opening 13 in addition to their original functions.

[0206] The shielding structure 40 is detachably connected to the box 10. The shielding structure 40 can be detachably connected to the box 10 by screwing, clamping or other means. This arrangement can facilitate the worker to disassemble and install the shielding structure 40, so as to facilitate the worker to install and remove the fuse 32 and the controller 33 from the maintenance opening 13.

[0207] Corresponding to the maintenance opening 13, the shielding structure 40 can be arranged on the first box 11, or on the second box 12, or on both the first box 11 and the second box 12. For example, the first box 11 is provided with the maintenance opening 13, the shielding structure 40 is arranged on the first box 11, and the shielding structure 40 includes a battery monitoring unit.

[0208] At present, the replacement of the fuse 30 usually needs to first remove the top cover of the box body 10, and the top cover is usually fixed by a large number of rivets, screws and the like, and there are also some electrical connection structures on the top cover. In the process of removing the top cover, a large number of rivets and screws need to be removed, and the electrical connection structures provided on the top cover also need to be disconnected, and the process is very cumbersome, and the replacement efficiency of the fuse 30 is low. Accordingly, the maintenance opening 13 is arranged on the box body 10, so that the worker can maintain and replace the fuse 30 without disassembling the box body 10, thereby simplifying the replacement process of the fuse 30 and improving the replacement efficiency of the fuse 30.

[0209] In addition, the battery device 100 has certain requirements for the dustproof and waterproof performance of the box body 10, and therefore the shielding structure 40 is arranged at the maintenance opening 13 to reduce the negative influence of the maintenance opening 13 on the dustproof and waterproof performance of the box body 10. Meanwhile, compared with the process of disassembling the box body 10, the operation of disassembling the shielding structure 40 is relatively simple.

[0210] In the embodiment, the maintenance opening 13 is arranged on the box body 10, and the fuse 30 is opposite to the maintenance opening 13, so that the replacement of the fuse 30 can be performed only by disassembling the shielding structure 40 and exposing the maintenance opening 13, thereby simplifying the replacement process of the fuse 30 and improving the replacement efficiency of the fuse 30.

[0211] In some embodiments, the box body 10 includes a first box body 11 and a second box body 12 that are covered with each other, and the battery cell 21 and the fuse 30 are accommodated in the box body 10.

[0212] The fuse 30 includes a shell 31, a fuse body 32 and a controller 33. The shell 31 includes a base 311, a first bearing platform 312, a first cover 313 and a second cover 314.

[0213] The base 311 is connected to the box body 10, and the fuse body 32 is detachably connected to the base 311. The base 311 is provided with a terminal for connecting the fuse body 32 to a corresponding circuit. The base 311 is provided with two sliding grooves 3112, and the sidewalls of the two sliding grooves 3112 are provided with first clamping holes 3132.

[0214] The first bearing platform 312 is detachably connected to the base 311. The two sides of the first bearing platform 312 are respectively connected to second connecting portions 3126, and the second connecting portions 3126 are connected to second clamping bodies 3125. The two second connecting portions 3126 are opposite to the two sliding grooves 3112, and part of the second connecting portion 3126 can be accommodated in the sliding groove 3112. When the part of the second connecting portion 3126 is accommodated in the sliding groove 3112, the corresponding second clamping body 3125 is inserted into the corresponding second clamping hole 3111. At this time, the second cover 314 is installed on the base 311, and the second main body portion covers part of the fuse body 32.

[0215] The first supporting platform 312 is provided with a containing cavity 3121, and the controller 33 is contained in the containing cavity 3121. The first supporting platform 312 is connected with a second connecting part 3126, and the second connecting part 3126 is connected with a second clamping body 3125.

[0216] The first cover body 313 comprises a first main body part 3131, and the first main body part 3131 is provided with a first clamping hole 3132. The first connecting part 3123 can be inserted into the first clamping hole 3132. When the first connecting part 3123 is inserted into the first clamping hole 3132, the first cover body 313 is installed on the first supporting platform 312, and the first main body part 3131 covers the controller 33.

[0217] The second cover body 314 is connected to the first supporting platform 312. When the first supporting platform 312 is connected to the base 311, the second cover body 314 is also installed on the base 311, and the second cover body 314 covers part of the melt 32.

[0218] The box body 10 is provided with a maintenance opening 13, and the shielding structure 40 is detachably connected to the box body 10. The shielding structure 40 comprises a battery monitoring unit, and the fuse 30 is connected to the box body 10 and opposite to the battery monitoring unit.

[0219] In the second aspect, some embodiments of the present application further provide a storage device 1, comprising the battery device 100 provided by some embodiments of the first aspect; wherein the battery device 100 is used for storing or providing electric energy.

[0220] The storage device 1 comprises one or more battery clusters to improve the voltage and capacity of the storage device 1. The battery cluster can comprise a plurality of battery devices 100, and the plurality of battery devices 100 are connected in series through a busbar component to improve the voltage of the storage device 1. When the storage device 1 comprises a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the storage device 1.

[0221] The storage device 1 can be used in a storage power station, a wind power system, a solar power system, a mobile power system or a temporary power supply system, etc. The storage device 1 can store electric energy as needed and output electric energy at an appropriate time. For example, the storage device 1 can store electric energy at a low electricity consumption valley, and provide electric energy for related users or electric equipment at a high electricity consumption peak. The storage system provided by the embodiments of the present application can be any power system that needs to use the storage device 1.

[0222] In some embodiments, the storage device 1 is a storage container or a storage cabinet.

[0223] In some embodiments, the storage device 1 can comprise a cabinet body and one or more battery clusters, and the battery clusters are contained in the cabinet body.

[0224] In some embodiments, the energy storage device 1 can include a thermal management module, a master control module, a general control module, a power distribution module, a fire control module, and the like.

[0225] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid to each battery device 100 through a pipeline for adjusting the temperature of the battery monomer 21.

[0226] As an example, the master control module can serve as a battery management unit of the battery cluster for monitoring and managing the battery cluster. The master control module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current, voltage, and the like of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch, and the like.

[0227] As an example, the general control module can serve as a battery management unit of the energy storage device 1 for monitoring and managing the energy storage device 1. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device 1. For example, the charging and discharging current, voltage, and the like of the energy storage device 1 can be controlled. As an example, the general control module includes an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and an optical fiber conversion module, and the like.

[0228] As an example, the fire control module includes a control panel, a detector, an alarm device, and the like, for detecting, alarming, or extinguishing the energy storage system.

[0229] As an example, the power distribution module can be used to distribute power to the modules that need power in the energy storage device 1.

[0230] In a third aspect, with reference to Figure 9 Some embodiments of the present application also provide an energy storage system, which includes the energy storage device 1 provided by some embodiments of the second aspect and the power conversion device 2, and the power conversion device 2 is used to electrically connect the power generation device 3 and the energy storage device 1.

[0231] The energy storage system can include one or more energy storage devices 1 and a power conversion device 2 (Power Converter System, PCS) connected between the power generation device 3 and the energy storage device 1. The power generation device 3 is used to generate electric energy, and the electric energy generated by the power generation device 3 can be stored in the energy storage device 1 through the power conversion device 2. As an example, the power generation device 3 can be a solar panel, a water power generation device 3, a fire power generation device 3, a wind power generation device 3, etc. The specific type of the power generation device 3 is not limited in the present application.

[0232] In a fourth aspect, some embodiments of the present application further provide a charging network, including a charging pile 4 and the energy storage device 1 provided by some embodiments of the second aspect, or the energy storage system provided by some embodiments of the third aspect. The energy storage device 1 is used to provide electric energy for the charging pile 4. Figure 10

[0233] The charging pile 4 is electrically connected with the energy storage device 1, and the energy storage device 1 is used to provide electric energy for the charging pile 4. The charging pile 4 is electrically connected with the battery device 100 in the energy storage device 1 through a cable, and the battery device 100 can provide the electric energy stored by itself to the charging pile 4. The charging pile 4 has one or more connectors 5, which are used to connect with the electric equipment (such as a vehicle), so as to charge the electric equipment.

[0234] The energy storage device 1 can be located inside the charging pile 4 (for example, a charging and storage integrated machine), or outside the charging pile 4.

[0235] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.​

Claims

1. A battery device, characterized by, The application relates to a battery pack, comprising: a box; a battery cell assembly contained in the box, the battery cell assembly comprising a plurality of battery cells electrically connected with each other; a fuse provided in the box, the fuse comprising a housing, a fuse body and a controller, the fuse body being electrically connected in a circuit in which the battery cells are electrically connected with each other, the fuse body being configured to be able to be broken to cut off the corresponding circuit, the controller being configured to be able to control the on-off state of the fuse body, at least one of the fuse body and the controller being detachably connected to the housing.

2. The battery device according to claim 1, characterized by The housing comprises a base connected to the box, and the fuse body is connected to the base. The housing further comprises a first support connected to the base, and the controller is connected to the first support.

3. The battery device of claim 2, wherein, The housing further comprises a second cover connected to the first support, and the second cover is used for covering at least part of the fuse body.

4. The battery device according to claim 2 or 3, characterized by The first support is provided with a side-opened accommodating cavity, and the controller is accommodated in the accommodating cavity. The housing further comprises a first cover which is detachably connected to the first support and covers the open side of the accommodating cavity.

5. The battery device of claim 4, wherein, The first cover comprises a first main body portion, and the first main body portion is provided with a first clamping opening. The first support is provided with a first clamping body which is capable of moving relative to the first support to be inserted into or withdrawn from the first clamping opening.

6. The battery device of claim 5, wherein The first support is provided with a first connecting portion with elasticity, and the first clamping body is arranged on the first connecting portion. The first clamping body is capable of being inserted into the first clamping opening under the action of the first connecting portion.

7. The battery device according to claim 5 or 6, characterized by The first clamping opening has at least two, and the at least two first clamping openings are arranged on the circumferential side of the first main body portion and are located on different sides of the first main body portion. The first clamping body has a plurality of first clamping bodies which are located on different sides of the first support and are matched with different first clamping openings.

8. The battery device of claim 5, wherein, The first main body portion is further provided with a protruding portion which is configured to abut against the base along the mounting direction of the first cover.

9. The battery device of claim 4, wherein, The first support is provided with a fixing column, and at least part of the fixing column supports the controller.

10. The battery device of claim 9, wherein, The controller is provided with a fixing hole, and part of the fixing column passes through the fixing hole and the other part of the fixing column abuts against the controller.

11. The battery device of claim 10, wherein, The side of the first cover facing the first support is provided with a fixing groove opposite to the fixing column, and the part of the fixing column passing through the fixing hole is inserted into the fixing groove.

12. The battery device according to claim 2 or 3, characterized by The base is provided with a second clamping opening. The first support is movably connected with a second clamping body, and the second clamping body is capable of moving relative to the first support to be inserted into or withdrawn from the second clamping opening.

13. The battery device of claim 12, wherein, The first support is provided with a second connecting portion with elasticity, and the second clamping body is arranged on the second connecting portion. The second clamping body is capable of being inserted into the second clamping opening under the action of the second connecting portion.

14. The battery device of claim 13, wherein, The number of the second connecting portions is at least two and is arranged on opposite sides of the first support, and at least part of the second connecting portions on the two sides of the first support is capable of deforming and approaching each other to make the corresponding second clamping body withdrawn from the second clamping opening.

15. The battery device of claim 13, wherein, The base is provided with a sliding groove, at least part of the second connecting part is slidably arranged in the sliding groove and can move relative to the sliding groove; The second connecting part abuts against at least one inner wall of the sliding groove.

16. The battery device of any one of claims 1-3, wherein, The box is provided with a maintenance opening, and the fuse is arranged in the box at a position corresponding to the maintenance opening; The battery device further comprises a shielding structure detachably connected to the box, and the shielding structure covers the maintenance opening.

17. An energy storage device, characterized by The battery device as claimed in any one of claims 1-16 is used for storing or providing electric energy.

18. An energy storage system characterized by, The energy storage device as claimed in claim 17 and a power conversion device are electrically connected to a power generation device and the energy storage device.

19. A charging network characterized in that, The energy storage device as claimed in claim 17 or the energy storage system as claimed in claim 18; The charging network further comprises a charging pile, and the energy storage device is used for providing electric energy for the charging pile.

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