Fuse, battery, and electric device

Abstract

The embodiment of the utility model provides a fuse, a battery and an electric device, and relates to the technical field of batteries. The fuse comprises a body, the body is provided with two terminals arranged oppositely along a first direction, the first direction is the extension direction of the body, the terminals are provided with first connection structures and second connection structures, the first connection structures are used for connecting a circuit, and the second connection structures are used for connecting an insulator. According to the fuse, the first connecting structure and the second connecting structure are arranged on the wiring terminal, so that the adapter and the corresponding assembling process of the adapter can be adaptively omitted while the requirement of connecting a circuit and an insulator is met, the contact resistance between the wiring terminal and the adapter is eliminated, the structure of the fuse can be simplified, and the service life of the fuse is prolonged. And the assembling complexity of the fuse is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more specifically, to a fuse, a battery and an electrical device. Background Art

[0002] Power battery systems typically include fuses or other overload protection devices to protect batteries and related electrical equipment from damage due to overload current or short circuit.

[0003] The two ends of the fuse are connected to the insulator and the circuit through adapters such as copper bars. After the fuse is connected to the adapter, the contact resistance is increased, and the structural complexity and assembly complexity of the fuse are increased. Utility Model Content

[0004] The present application provides a fuse, a battery and an electrical device, which can reduce the structural complexity and assembly complexity of the fuse.

[0005] In a first aspect, an embodiment of the present application provides a fuse, including a body, wherein the body has two terminals disposed opposite to each other along a first direction, wherein the first direction is the extension direction of the body, and each of the terminals is provided with a first connection structure and a second connection structure, wherein the first connection structure is used to connect a circuit, and the second connection structure is used to connect an insulator. By providing the first connection structure and the second connection structure on the terminal, while satisfying the connection between the circuit and the insulator, the adapter and the corresponding assembly process of the adapter can be adaptively omitted, and while eliminating the contact resistance between the terminal and the adapter, the fuse structure can be simplified and the complexity of fuse assembly can be reduced.

[0006] In some embodiments of the present application, the first connection structure includes a first terminal connected to the terminal, and the first terminal is used to connect the circuit. By designing the first connection structure to include the first terminal, the first terminal has a simple structure and is easier to produce and process than an adapter, thereby improving the production efficiency of the fuse.

[0007] In some embodiments of the present application, the first terminal includes a threaded connection structure, a plug-in structure, or a snap-in structure for detachably connecting with the circuit. By designing the first terminal to be detachably connected with the circuit through a threaded connection structure, a plug-in structure, or a snap-in structure, it is convenient to assemble and connect the first terminal to the circuit, and also convenient to dismantle and repair the two.

[0008] In some embodiments of the present application, the first terminal is provided with an external thread, and the first connection structure further includes a first nut, which is threadedly connected to the first terminal and is used to press one end of the circuit against the terminal. By providing an external thread on the first terminal, the first terminal and the first nut form a bolt connection assembly. When the circuit is connected, one end of the circuit is fixed by screwing the first nut on the first terminal, and the assembly process is simple; at the same time, the first terminal can play the role of a bolt while playing the role of a transfer, and has multiple uses.

[0009] In some embodiments of the present application, the first connection structure includes a first connection hole that penetrates the wiring terminal along a second direction, the second direction intersects the first direction, and the first connection hole is used to connect the circuit. By designing the first connection structure to include the first connection hole, the first connection hole has a simple structure and is easier to produce and process than an adapter, thereby improving the production efficiency of the fuse.

[0010] In some embodiments of the present application, the first connection hole includes a threaded connection structure, a plug-in structure, or a snap-in structure for detachably connecting with the circuit. By designing the first connection hole to be detachably connected with the circuit through a threaded connection structure, a plug-in structure, or a snap-in structure, it is convenient to assemble and connect the first connection hole with the circuit, and also convenient to dismantle and repair the two.

[0011] In some embodiments of the present application, the first connection structure further includes a first bolt and a second nut, the first bolt includes a first nut portion and a first screw portion connected to each other, the first nut portion abuts against a surface of the terminal along the second direction, the first screw portion is inserted into the first connection hole, and the second nut is connected to the first screw portion and abuts against another surface of the terminal along the second direction; one end of the circuit is pressed against the terminal by the first nut portion or the second nut. The circuit is fixed by the bolt connection assembly formed by the first bolt and the second nut, and the structure is simple and easy to disassemble and assemble.

[0012] In some embodiments of the present application, the second connection structure includes a second connection hole that penetrates the wiring terminal along a second direction, the second direction intersects with the first direction, and the second connection hole is used to connect the insulator. The connection with the insulator through the second connection hole is simple in structure and easy to process.

[0013] In some embodiments of the present application, the second connection hole includes a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the insulator. By designing the second connection hole and the insulator to be detachably connected, the assembly and subsequent maintenance of the two are facilitated.

[0014] In some embodiments of the present application, the second connection structure further includes a second bolt, the second bolt includes a second nut portion and a second screw portion connected to each other, the second nut portion abuts against the wiring terminal, and the second screw portion is inserted into the second connection hole and is used to connect the insulator. The second bolt is used to connect the second connection hole and the insulator respectively, so the structure is simple and easy to assemble.

[0015] In a second aspect, an embodiment of the present application further provides a battery, comprising the fuse described in any one of the above technical solutions.

[0016] In a third aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0019] Figure 2 A schematic diagram of the structure of a battery provided in some embodiments of the present application;

[0020] Figure 3 A schematic structural diagram of a fuse according to a first embodiment of the present application;

[0021] Figure 4 A schematic structural diagram of a fuse according to a second embodiment of the present application;

[0022] Figure 5 A schematic structural diagram of a fuse after connecting an insulator and a circuit according to a second embodiment of some embodiments of the present application;

[0023] Figure 6 A schematic structural diagram of a fuse according to a third embodiment of the present application;

[0024] Figure 7 A schematic structural diagram of a fuse after connecting an insulator and a circuit according to a third embodiment of the present application;

[0025] Figure 8 A schematic structural diagram of a fuse according to a fourth embodiment of the present application.

[0026] The reference numerals of the specific embodiments are as follows:

[0027] 1000. Vehicles;

[0028] 100. Battery;

[0029] 10. Box body; 11. First part; 12. Second part;

[0030] 20. Battery cells;

[0031] 30. Fuse; 31. Body; 32. Terminal; 321. First surface; 322. Second surface; 33. First connection structure; 331. First terminal; 3311. External thread; 332. First nut; 333. First connection hole; 3331. First internal thread; 334. First bolt; 3341. First nut portion; 3342. First screw portion; 335. Second nut; 34. Second connection structure; 341. Second connection hole; 342. Second bolt; 3421. Second nut portion; 3422. Second screw portion; 35. Insulator;

[0032] 40. Circuit;

[0033] 200, controller;

[0034] 300, motor;

[0035] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0038] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may 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 refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0042] The term "plurality" used in the present application refers to two or more (including two).

[0043] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0044] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0045] The battery cell mentioned in the embodiments of the present application may include an electrode assembly and an electrolyte, and the electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive current collector and a positive active material layer, and the positive active material layer is coated on the surface of the positive current collector; the positive current collector includes a positive electrode coating area and a positive electrode ear connected to the positive electrode coating area, the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode ear is not coated with a positive electrode active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0046] At present, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0047] A fuse is usually provided in a power battery and is connected to the circuit of the battery, such as the loop of a battery management system, to prevent excessive current from passing through and protect the circuit from damage caused by overload or short circuit.

[0048] In the related art, a fuse generally includes a main body and an adapter connected to two terminals of the main body. The adapter can be a block-shaped copper bar with holes or a copper bar, etc. The adapter is used to connect the circuit and the insulator is connected through the adapter.

[0049] During the specific assembly, it is necessary to first connect the adapter and the insulator through bolts and other components, and then install the two adapters one by one on the two terminals of the fuse through bolts and other components, and finally connect the circuit of the battery management system through the adapter. Not only is the assembly process cumbersome, but it is also necessary to ensure the straightness of the two fuses at both ends during assembly, resulting in low production efficiency. Moreover, there is a large contact resistance between the connection surface of the adapter and the terminal, which affects the conductive performance of the fuse. In addition, the adapter is heavy, which exerts a large pressure on the terminal, affecting the structural stability of the terminal, and even causing the terminal to break.

[0050] Therefore, how to improve the assembly efficiency of the fuse, reduce the contact resistance of the fuse, and improve the structural stability of the terminal is one of the problems that need to be solved urgently in batteries and related components.

[0051] In view of this, the present application provides a technical solution, in which a first connection structure and a second connection structure are provided on the terminal of the fuse, the first connection structure is used to connect the circuit, and the second connection structure is used to connect the insulator, and only two steps, circuit connection and insulator connection, are required during assembly, thereby improving the assembly efficiency of the fuse and further improving its production efficiency. Since the adapter is omitted and the first connection structure and the second connection structure are part of the terminal, the contact resistance can be reduced, and at the same time, the first connection structure and the second connection structure are used to replace the heavier adapter, which also adaptively reduces the pressure on the terminal and improves the structural stability of the terminal.

[0052] The battery cells described in the embodiments of the present application are suitable for use in batteries and electrical devices using the batteries.

[0053] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0054] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0055] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0056] Combined with Figure 1 As shown in , the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0057] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0058] Figure 2 An exploded view of a battery 100 provided for some embodiments of the present application.

[0059] Combined with Figure 2 As shown in , the battery 100 includes a box 10, a battery cell 20, a fuse 30 and a circuit 40, and the battery cell 20 is accommodated in the box 10. Among them, the box 10 is used to provide a storage space for the battery cell 20, and the box 10 can adopt a variety of structures. In some embodiments, the box 10 may include a first part 11 and a second part 12, the first part 11 and the second part 12 cover each other, and the first part 11 and the second part 12 jointly define a storage space for accommodating the battery cell 20. The second part 12 can be a hollow structure with one end open, the first part 11 can be a plate-like structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a storage space; the first part 11 and the second part 12 can also be hollow structures with one side open, and the open side of the first part 11 covers the open side of the second part 12. Of course, the box 10 formed by the first part 11 and the second part 12 can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0060] In the battery 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0061] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0062] In addition, the battery 100 also includes a battery management system (not shown in the figure), and the circuit 40 can be a line for connecting the battery cells 20 and the battery management system. In this case, the fuse 30 and the circuit 40 can be regarded as part of the battery management system. The battery management system is electrically connected to the battery module formed by multiple battery cells 20, and is used to detect parameters such as the voltage, temperature and current of the battery 100 to ensure that the above operating parameters of the battery are within a safe range. At the same time, the battery management system can also control the charging and discharging process to prevent overcharging, over-discharging, short circuiting, etc., and protect the battery 100 from damage.

[0063] Figure 3 A schematic structural diagram of a fuse according to a first embodiment of some embodiments of the present application.

[0064] Combined with Figure 3 As shown in the figure, an embodiment of the present application provides a fuse 30, including a main body 31, the main body 31 has two terminal blocks 32 arranged opposite to each other along a first direction X, the first direction X is the extension direction of the main body 31, and each terminal block 32 is provided with a first connecting structure 33 and a second connecting structure 34, the first connecting structure 33 is used to connect the circuit 40, and the second connecting structure 34 is used to connect the insulator 35.

[0065] The fuse 30 in this embodiment is used in the battery 100, specifically as a part of a battery management system. The fuse 30 is connected to the circuit 40 of the battery management system and forms a conductive loop to prevent excessive current from passing through the circuit 40 of the battery management system, thereby protecting the circuit 40 from damage caused by overload or short circuit.

[0066] The body 31 is the main part of the fuse 30. A fuse (not shown) or other fuse element is arranged inside the body 31. When the current exceeds the set safety value, the fuse will quickly melt and disconnect the circuit 40, thereby preventing excessive current from passing through. This can prevent the circuit 40 from being damaged due to overload, and can also reduce fire and other safety risks.

[0067] There are two terminals 32, which are arranged opposite to each other along the first direction X. Each terminal 32 is provided with the first connection structure 33 and the second connection structure 34. The terminal 32 may be in the shape of a plate-like structure as shown in the figure, and in order to have space for the first connection structure 33 and the second connection structure 34, the length of the terminal 32 may be appropriately lengthened, for example, compared with the length of the terminal 32 in the related art, it may be lengthened by 1-10 cm. The terminal 32 has a first surface 321 and a second surface 322 opposite to each other along the second direction Y.

[0068] The fuse 30 provided in the embodiment of the present application replaces the adapter with the first connection structure 33 and the second connection structure 34. While satisfying the connection circuit 40 and the insulator 35, the adapter and the corresponding assembly process of the adapter can be adaptively omitted. While eliminating the contact resistance between the terminal 32 and the adapter, the structure of the fuse 30 can be simplified, the complexity of the assembly of the fuse 30 can be reduced, and the production efficiency can be improved. At the same time, the pressure on the terminal 32 can be reduced, the structural stability of the terminal 32 can be improved, and the possibility of the terminal 32 being broken can be reduced.

[0069] In some examples, optionally, the first connection structure 33 includes a first terminal 331 connected to the terminal 32 , and the first terminal 331 is used to connect the circuit 40 .

[0070] The first terminal 331 can be located on the first surface 321. The first terminal 331 and the terminal 32 can be integrally formed during processing, or the first terminal 331 and the terminal 32 can form an integral structure by welding or the like. The axial direction of the first terminal 331 is set along the second direction Y in the figure and is perpendicular to the surface of the terminal 32.

[0071] There are many ways to connect the first terminal 331 to the circuit 40. For example, one end of the circuit 40 can be directly wrapped around the first terminal 331, or one end of the circuit 40 can be fixed to the first terminal 331 by a connecting member such as the first nut 332 described below.

[0072] By designing the first connection structure 33 to include the first terminal 331 , the first terminal 331 has a simple structure and is easier to produce and process than a transition piece, thereby improving the production efficiency of the fuse 30 .

[0073] In some examples, optionally, the first terminal 331 includes a threaded connection structure, a plug-in structure, or a snap-on structure for detachably connecting to the circuit 40 .

[0074] There are many ways to detachably connect the first terminal 331 to the circuit 40, such as bolt connection, plug-in connection, snap-in connection, etc. When plug-in connection is adopted, a jack or slot can be provided at one end of the circuit 40, and the first terminal 331 is conductively connected to the jack / slot; when snap-in connection is adopted, a slot can be opened on the first terminal 331, and a buckle can be provided at one end of the circuit 40 (the implementation methods of plug-in connection and snap-in connection are not shown in the figure).

[0075] The above structure is designed to be connected to the circuit 40 in a detachable manner, which not only facilitates the assembly connection between the first terminal 331 and the circuit 40, but also facilitates the disassembly and maintenance between the two.

[0076] Figure 4 A schematic diagram of the structure of a fuse according to a second embodiment of the present application is provided. Figure 5 A schematic structural diagram of a fuse of a second embodiment provided in some embodiments of the present application after connecting an insulator and a circuit.

[0077] Combined with Figure 4 and attached Figure 5 As shown in , in some examples, optionally, the first terminal is provided with an external thread 3311 , and the first connection structure 33 further includes a first nut 332 , which is threadedly connected to the first terminal 331 and presses one end of the circuit 40 to the terminal 32 .

[0078] The first terminal 331 of this embodiment fixes one end of the circuit 40 by bolt connection, for example, an external thread 3311 may be provided on the first terminal 331, so that the first terminal 331 forms a bolt, and then the first nut 332 is threadedly connected to the bolt to press one end of the circuit 40 against one surface of the terminal 32. Of course, one end of the circuit 40 may be directly connected to the first nut 332, so that the circuit 40, the first nut 332, the first bolt 334 and the terminal 32 can be electrically connected.

[0079] When the above structure is used to connect the circuit 40, one end of the circuit 40 is fixed by screwing the first nut 332 on the first terminal 331, and the assembly process is simple; at the same time, the first terminal 331 can act as a bolt while playing a transfer role, and has multiple uses.

[0080] Figure 6 A schematic diagram of the structure of a fuse according to a third embodiment of the present application is provided. Figure 7A schematic structural diagram of a fuse of a third embodiment provided in some embodiments of the present application after connecting an insulator and a circuit.

[0081] Combined with Figure 6 and attached Figure 7 As shown in , in some examples, optionally, the first connection structure 33 includes a first connection hole 333 penetrating the terminal 32 along the second direction Y, the second direction Y intersects with the first direction X, and the first connection hole 333 is used to connect the circuit 40.

[0082] In this embodiment, the first connection hole 333 passes through the terminal 32, and specifically passes through the first surface 321 and the second surface 322 of the terminal 32. By designing the first connection structure 33 to include the first connection hole 333, it has the characteristics of simple structure and easy production and processing, which can improve the production efficiency of the fuse 30 to a certain extent.

[0083] In some examples, optionally, the first connection hole 333 includes a threaded connection structure, a plug-in structure, or a snap-on structure for detachably connecting to the terminal 32 of the circuit 40 .

[0084] There are many ways to detachably connect the first connection hole 333 and the circuit 40, such as plugging, clamping or bolting. When the first connection hole 333 is plugged with one end of the circuit 40, the plug of the circuit 40 can be directly inserted into the first connection hole 333; when the first connection hole 333 is clamped with the circuit 40, the first connection hole 333 can be designed as a rectangular clamping hole structure, the circuit 40 is connected by a clamping member, and the conductive connection between the circuit 40 and the terminal 32 is achieved by the cooperation of the clamping member and the clamping hole (the plugging and clamping methods are not shown in the figure).

[0085] In this embodiment, the first connection hole 333 is designed to be connected to the circuit 40 in a detachable manner, so that the assembly connection between the first connection hole 333 and the circuit 40 is convenient, and the disassembly and maintenance between the two are also convenient.

[0086] In some examples, optionally, the first connection structure 33 further includes a first bolt 334 and a second nut 335, the first bolt 334 includes a first nut portion 3341 and a first screw portion 3342 connected to each other, the first nut portion 3341 abuts against a surface of the terminal 32 along the second direction Y, and the first screw portion 3342 is plugged into the first connection hole 333, in which case the first connection hole 333 can be regarded as a plug-in hole matching the first screw portion 3342, that is, the first connection hole 333 includes a plug-in structure detachably connected to one end of the circuit 40). Further, the second nut 335 is connected to the first screw portion 3342 and abuts against another surface of the terminal 32 along the second direction Y; one end of the circuit 40 is pressed against the terminal 32 by the first nut portion 3341 or the second nut 335.

[0087] When the first connection hole 333 is connected to one end of the circuit 40, the first bolt 334 is inserted into the first connection hole 333, at which time the first nut portion 3341 of the first bolt 334 is adjacent to the first surface 321, and one end of the circuit 40 can be placed between the first nut portion 3341 and the first surface 321; then the second nut 335 is screwed to press the second surface 322, so that one end of the circuit 40 is pressed against the first nut portion 3341 and the first surface 321. Of course, the circuit 40 can also be pressed between the second surface 322 of the second nut 335 (this embodiment is not shown in the figure).

[0088] The above structure fixes the circuit 40 through a bolt connection assembly formed by the first bolt 334 and the second nut 335 , and has a simple structure and is easy to assemble and disassemble.

[0089] Figure 8 A schematic structural diagram of a fuse according to a fourth embodiment of the present application.

[0090] Combined with Figure 8 As shown in , in some examples, optionally, the first connecting hole 333 of the present embodiment is provided with a first internal thread 3331, and accordingly, the first connecting structure 33 may only include the above-mentioned first bolt 334, and the second nut 335 may be adaptively omitted, and at this time, the first connecting hole 333 may be regarded as a threaded connection structure including a detachable connection with one end of the circuit 40.

[0091] The screw hole formed by the first connection hole 333 is connected to the first bolt 334 , so that one end of the circuit 40 can be pressed between the first nut portion 3341 of the first bolt 334 and the first surface 321 .

[0092] Combined with the attachment again Figure 3-8As shown in the figure, the second connection structure 34 of this embodiment includes a second connection hole 341 that penetrates the terminal 32 along the second direction Y, the second direction Y intersects with the first direction X, and the second connection hole 341 is used to connect the insulator 35. The second connection hole 341 is connected to the insulator 35, and the structure is simple and easy to process.

[0093] In some examples, optionally, the second connection hole 341 includes a threaded connection structure, a plug-in structure, or a clamping structure for detachably connecting with the insulator 35 .

[0094] The insulator 35 may be a columnar structure as shown in the figure. The insulator 35 may be a part of the fuse 30, and may prevent the current from passing through the material outside the fuse 30, thereby ensuring safe operation and preventing the risk of electric shock. Of course, the insulator 35 may also be regarded as an external mounting component of the fuse 30, which will not be described in detail in this embodiment.

[0095] There are many ways to detachably connect the second connection hole 341 and the insulator 35, for example, by providing a plug that can be inserted into the second connection hole 341 on the top of the insulator 35, so as to achieve plug-in matching between the two (this embodiment is not shown in the figure); or a second internal thread can be provided on the second connection hole 341 (not shown in the figure), so that the second connection hole 341 also forms a screw hole structure, and accordingly, a screw structure adapted to the second internal thread can be provided on the insulator 35 (not shown in the figure), so as to directly connect the insulator 35 and the second connection hole 341. Alternatively, the connection can be made by the following bolt connection method. By designing the second connection hole 341 and the insulator 35 to be detachably connected, the assembly and subsequent maintenance of the two are facilitated.

[0096] In some examples, optionally, the second connecting structure 34 also includes a second bolt 342, the second bolt 342 includes a second nut portion 3421 and a second screw portion 3422 connected to each other, the second nut portion 3421 abuts against the terminal 32, the second screw portion 3422 is inserted into the second connecting hole 341, and is used to connect the insulator 35. At this time, the second connecting hole 341 can be regarded as a socket matching the second screw portion 3422, that is, the second connecting hole 341 includes a plug-in structure that is detachably connected to one end of the circuit 40.

[0097] The second screw portion 3422 of the second bolt 342 passes through the second connection hole 341 and is plugged or bolted to the insulator 35, and the second nut portion 3421 of the second bolt 342 is pressed against the first surface 321. The second bolt 342 is connected to the second connection hole 341 and the insulator 35 respectively, which has a simple structure and is easy to assemble.

[0098] Of course, the structural form of the second connection structure 34 of this embodiment is not limited to this. For example, the second connection structure can also be a columnar structure similar to the structure of the above-mentioned first terminal 331 (not shown in the figure), and this embodiment will not list too many examples.

[0099] Finally, please refer to the attached Figure 3-8 The embodiment of the present application provides a fuse 30, including a body 31, the body 31 has two terminals 32 arranged opposite to each other along a first direction X, the first direction X is the extension direction of the body 31, each terminal 32 is provided with a first connection structure 33 and a second connection structure 34, the first connection structure 33 is used to connect the circuit 40, and the second connection structure 34 is used to connect the insulator 35. The first connection structure 33 includes a first terminal 331 connected to the terminal 32, and the first terminal 331 is used to connect the circuit 40. The first terminal 331 includes a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the circuit 40. The first terminal 331 is provided with an external thread 3311, and the first connection structure 33 also includes a first nut 332, the first nut 332 is threadedly connected to the first terminal 331, and is used to press one end of the circuit 40 to the terminal 32. The first connection structure 33 includes a first connection hole 333 that penetrates the terminal 32 along the second direction Y, the second direction Y intersects with the first direction X, and the first connection hole 333 is used to connect the circuit 40. The first connection hole 333 includes a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the circuit 40. The first connection structure 33 also includes a first bolt 334 and a second nut 335. The first bolt 334 includes a first nut portion 3341 and a first screw portion 3342 that are connected. The first nut portion 3341 abuts against a surface of the terminal 32 along the second direction Y, the first screw portion 3342 is plugged into the first connection hole 333, and the second nut 335 is connected to the first screw portion 3342 and abuts against another surface of the terminal 32 along the second direction Y; one end of the circuit 40 is pressed against the terminal 32 by the first nut portion 3341 or the second nut 335. The second connection structure 34 includes a second connection hole 341 that penetrates the terminal 32 along a second direction Y, the second direction Y intersects with the first direction X, and the second connection hole 341 is used to connect the insulator 35. The second connection hole 341 includes a threaded connection structure, a plug-in structure, or a clamping structure that is detachably connected to the insulator 35. The second connection structure 34 also includes a second bolt 342, and the second bolt 342 includes a second nut portion 3421 and a second screw portion 3422 that are connected, the second nut portion 3421 abuts against the terminal 32, and the second screw portion 3422 is plugged into the second connection hole 341, and is used to connect the insulator 35.

[0100] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for the intermediate technical features, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A fuse, comprising a body, wherein the body has two connection terminals arranged opposite to each other along a first direction, wherein the first direction is an extension direction of the body, and wherein: Each of the wiring terminals is provided with a first connection structure and a second connection structure, wherein the first connection structure is used for connecting a circuit, and the second connection structure is used for connecting an insulator.

2. The fuse according to claim 1, characterized in that: The first connection structure includes a first terminal connected to the terminal, and the first terminal is used to connect the circuit.

3. The fuse according to claim 2, characterized in that: The first terminal comprises a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the circuit.

4. The fuse according to claim 3, characterized in that: The first terminal is provided with an external thread, and the first connection structure further comprises a first nut, which is threadably connected to the first terminal and is used to press one end of the circuit against the terminal.

5. The fuse according to claim 1, characterized in that: The first connection structure includes a first connection hole penetrating through the wiring terminal along a second direction, the second direction intersects with the first direction, and the first connection hole is used to connect the circuit.

6. The fuse according to claim 5, characterized in that: The first connection hole includes a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the circuit.

7. The fuse according to claim 6, characterized in that: The first connection structure also includes a first bolt and a second nut, the first bolt includes a first nut portion and a first screw portion connected to each other, the first nut portion abuts against a surface of the terminal along the second direction, the first screw portion is inserted into the first connection hole, and the second nut is connected to the first screw portion and abuts against another surface of the terminal along the second direction; one end of the circuit is pressed against the terminal by the first nut portion or the second nut.

8. The fuse according to any one of claims 1 to 7, characterized in that: The second connection structure includes a second connection hole penetrating through the wiring terminal along a second direction, the second direction intersects with the first direction, and the second connection hole is used to connect the insulator.

9. The fuse according to claim 8, characterized in that: The second connecting hole includes a threaded connection structure, a plug-in structure or a clamping structure for detachably connecting with the insulator.

10. The fuse according to claim 9, characterized in that: The second connection structure also includes a second bolt, which includes a second nut portion and a second screw portion connected to each other, the second nut portion abuts against the wiring terminal, and the second screw portion is inserted into the second connection hole and is used to connect the insulator.

11. A battery, characterized in that: Comprising the fuse as described in any one of claims 1-10.

12. An electrical device, characterized in that: Comprising the battery of claim 11, the battery is used to provide electrical energy.

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