Fuse, power distribution device, battery device, and electric device

Abstract

The present application provides a fuse (400), a power distribution device (2000), a battery device (100), and an electric device. The fuse (400) comprises a fuse body (410), a first conductor member (420), and a second conductor member (430); a first body portion (421) of the first conductor member (420) is connected to a first end (411); a first connection portion (422) is connected to a first electrical device (500); a first heat dissipation portion (423) is used for realizing heat dissipation; and the second conductor member (430) is connected to a second end (412). In the fuse (400) provided in embodiments of the present application, it is only necessary to electrically connect the first connection portion (421) of the first conductor member (420) and the second conductor member (430) to external structures, respectively, without needing to further connect the fuse body (410), so that the assembly process is effectively reduced, thereby simplifying the assembly operation.

Description

Fuse, power distribution equipment, battery devices and electrical appliances Technical Field

[0001] This application relates to the field of power distribution equipment technology, and in particular provides a fuse, a power distribution device, a battery device, and a power consumption device. Background Technology

[0002] A fuse is connected in series in a circuit. It uses an internal metal conductor as a fusible element. When the current exceeds a specified value for a certain period of time, the heat generated by the fusible element causes it to melt and break the circuit. As a circuit protection device, fuses are widely used in various industries such as power, electronics, and new energy vehicles.

[0003] During the assembly process, fuses require the use of electrical conductors to connect them, and these conductors must be connected to conductors that connect other electrical components, making the operation quite cumbersome.

[0004] Application content

[0005] The purpose of this application is to provide a fuse, power distribution device, battery device, and power consumption device, aiming to solve the problem that the operation of fuses connected in series in a circuit is cumbersome.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0007] In a first aspect, embodiments of this application provide a fuse, including a fuse body, a first conductor, and a second conductor. The fuse body has a first end and a second end. The first conductor includes a first main body portion connected to the first end. The first main body portion extends outward to form a first connecting portion, which is flush with the first main body portion and is used to connect a first electrical device. The first main body portion is bent toward the second end to form a first heat dissipation portion. The second conductor is connected to the second end.

[0008] The beneficial effects of the embodiments of this application are as follows: The fuse provided in the embodiments of this application has a first conductor and a second conductor as part of the fuse. The first conductor and the second conductor are respectively disposed at the first end and the second end of the fuse body. Therefore, when the fuse is assembled in series in the circuit, it is only necessary to electrically connect the first connecting part of the first conductor and the second conductor to the external structure, without having to connect the fuse body. This effectively reduces the assembly process and simplifies the assembly operation. In addition, the first heat dissipation part can also dissipate heat to reduce the temperature rise of the first conductor, thereby reducing the probability of the fuse body accidentally blowing.

[0009] In some embodiments, the second conductor includes a second body portion, which is bent toward the first end to form a second heat dissipation portion, and the second heat dissipation portion extends outward to form a second connecting portion; the second connecting portion is parallel to the second heat dissipation portion and is used to connect a second electrical device.

[0010] By adopting the above technical solution, the second main body is connected to the second end of the fuse body, and the second heat dissipation part is used to improve the heat dissipation effect. Thus, when assembling the fuse, it is only necessary to connect the second connecting part to the second electrical component.

[0011] In some embodiments, the second connecting portion is offset relative to the second heat dissipation portion toward the fuse body, and the surfaces of the second connecting portion and the second heat dissipation portion form a height difference.

[0012] By adopting the above technical solution, the height difference formed by the surfaces of the second connecting part and the second heat dissipation part can be used to avoid the connection operation of the second connecting part, thereby reducing the space requirements of the second connecting part for assembly.

[0013] In some embodiments, the first heat dissipation portion and the second heat dissipation portion are located on the same side of the fuse body.

[0014] By adopting the above technical solution, both the first heat dissipation part and the second heat dissipation part are used to achieve heat dissipation function. By setting the first heat dissipation part and the second heat dissipation part on the same side of the fuse body, heat dissipation treatment of the first heat dissipation part and the second heat dissipation part can be carried out simultaneously.

[0015] In some embodiments, the first heat dissipation portion and the second heat dissipation portion are flush.

[0016] By adopting the above technical solution, and by setting the first heat dissipation part and the second heat dissipation part to be flush, the first heat dissipation part and the second heat dissipation part can simultaneously contact the external cooling structure to perform heat dissipation operation.

[0017] In some embodiments, the first connecting portion and the second connecting portion are located on opposite sides of the fuse body.

[0018] By adopting the above technical solution, the first connecting part and the second connecting part can be connected to each other on opposite sides of the fuse body, which can effectively reduce the mutual influence between the first connecting part and the second connecting part.

[0019] In some embodiments, a second mounting hole is provided on the second connecting portion.

[0020] By adopting the above technical solution, the second connecting part can form an electrical connection with the second electrical component through the second mounting hole.

[0021] In some embodiments, a second countersunk hole is provided on the second body portion, and the fuse further includes a second fastener, which passes through the second countersunk hole and is locked to the second end.

[0022] By adopting the above technical solution, the second fastener can pass through the second countersunk hole and lock the second main body to the second end to achieve connection. The second countersunk hole can be used to accommodate the second fastener, so as to reduce the impact of the second fastener protruding from the second main body on the overall size.

[0023] In some embodiments, a first mounting hole is provided on the first connecting portion.

[0024] By adopting the above technical solution, the first connecting part can form an electrical connection with the first electrical component through the first mounting hole.

[0025] In some embodiments, a sampling hole is provided on the first connecting portion.

[0026] By adopting the above technical solution, the sampling line can be fixed using the sampling hole to realize the information collection operation of the first connection part.

[0027] In some embodiments, a first countersunk hole is provided on the first main body, and the fuse further includes a first fastener, which passes through the first countersunk hole and is locked to the first end.

[0028] By adopting the above technical solution, the first fastener can pass through the first countersunk hole and lock the first main body to the first end to achieve connection. The first countersunk hole can be used to accommodate the first fastener, so as to reduce the impact of the first fastener protruding from the first main body on the overall size.

[0029] Secondly, embodiments of this application also provide a power distribution device, including a first electrical component, a second electrical component, and a fuse as described above, wherein a first connection portion of the fuse is connected to the first electrical component, and a second connection portion of the fuse is connected to the second electrical component.

[0030] The beneficial effects of the embodiments of this application are as follows: The power distribution device provided in the embodiments of this application includes the above-mentioned fuse, so the assembly and operation of the power distribution device is more convenient.

[0031] In some embodiments, the first electrical component is a relay, the second electrical component is a current sensor, and the relay and the current sensor are respectively disposed on opposite sides of the fuse body; the power distribution device also includes an electrical connector, the first connector is connected to the high-voltage contact of the relay, the current sensor is connected to the electrical connector, and the electrical connector is connected to the second connector.

[0032] By adopting the above technical solution, the first connection part of the fuse can be electrically connected to the current sensor through an electrical connector, while the second connection part of the fuse can be directly connected to the high-voltage contact of the relay, so as to realize the connection and assembly of the fuse.

[0033] In some embodiments, the power distribution device further includes a first housing and a second housing, wherein a first electrical component, a second electrical component, and a fuse are disposed within the first housing; the first housing has a first connection end, and a first heat dissipation portion and a second heat dissipation portion of the fuse are disposed on the first connection end; the second housing has an opening, and the second housing covers the first connection end, with at least a portion of the first heat dissipation portion and a portion of the second heat dissipation portion exposed outside the opening.

[0034] By adopting the above technical solution, the second housing can cover and protect the fuse, the first electrical component, and the second electrical component installed in the first housing. At the same time, the first heat dissipation part and the second heat dissipation part can be exposed from the opening to achieve the purpose of heat dissipation.

[0035] Thirdly, embodiments of this application also provide a battery device, including a housing, a battery cell assembly, and a power distribution device as described above, wherein the battery cell assembly is housed within the housing, and the power distribution device is electrically connected to the battery cell assembly.

[0036] The beneficial effects of the embodiments of this application: The battery device provided in the embodiments of this application includes the above-mentioned power distribution device, thereby simplifying the assembly process of the battery device.

[0037] Fourthly, embodiments of this application also provide an electrical device, including the battery device as described above, which is used to provide electrical energy.

[0038] The beneficial effects of the embodiments of this application: The electrical device provided in the embodiments of this application includes the above-mentioned battery device, thereby simplifying the assembly process of the electrical device. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 is a structural schematic diagram of the vehicle provided in an embodiment of this application;

[0041] Figure 2 is an exploded view of the battery device provided in an embodiment of this application;

[0042] Figure 3 is an exploded structural diagram of a battery cell provided in an embodiment of this application;

[0043] Figure 4 is a schematic diagram of the power distribution device provided in an embodiment of this application;

[0044] Figure 5 is a schematic diagram showing the connection between the first housing and the second housing of the power distribution device provided in the embodiment of this application;

[0045] Figure 6 is a schematic diagram of the structure of the fuse provided in an embodiment of this application;

[0046] Figure 7 is a schematic diagram of the structure of the first conductor provided in an embodiment of this application;

[0047] Figure 8 is a schematic diagram of the structure of the second conductor provided in an embodiment of this application.

[0048] In the figures, the following reference numerals are used: 1000, vehicle; 100, battery device; 110, battery cell assembly; 200, controller; 300, motor; 10, housing; 30, heat exchange plate; 20, battery cell; 21, end cap; 21a, electrode terminal; 22, housing; 23, electrode assembly; 23a, tab; 2000, power distribution device; 2100, first housing; 2101, first connection end; 2200, second housing; 2201, opening; 400, fuse; 410, fuse body; 411, first end; 412, second end; 420, first conductor; 420a, clearance groove; 421, first main body; 4211, first countersunk hole; 422, first connection part; 4221. 4222, Sampling hole; 423, First heat dissipation part; 424, First fastener; 430, Second conductor; 431, Second main body part; 4311, Second countersunk hole; 432, Second heat dissipation part; 433, Second connecting part; 4331, Second mounting hole; 434, Second fastener; 500, First electrical component; 600, Second electrical component; 700, Electrical connector. Detailed Implementation

[0049] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0050] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] A fuse is connected in series in a circuit. It uses an internal metal conductor as a fusible element. When the current exceeds a specified value for a certain period, the heat generated by the fusible element causes it to melt and break the circuit. Fuses are widely used as circuit protection devices in various industries such as power, electronics, and new energy vehicles. The assembly process of a fuse requires connecting it with an electrical conductor, and then connecting this conductor to the conductors of other electrical components, making the operation relatively cumbersome.

[0054] Based on the above considerations, in order to solve the problem of the cumbersome operation of assembling fuses in series in a circuit, a fuse is designed, including a fuse body and a first conductor and a second conductor connected to a first end and a second end of the fuse body. The first conductor includes a first main body, a first heat dissipation part, and a first connecting part. The first main body is connected to the first end of the fuse body, the first heat dissipation part is used for heat dissipation, and the first connecting part is used to connect with an external electrical component. Meanwhile, the second conductor can connect with other electrical components. Therefore, when assembling the fuse, only the first connecting part and the second conductor need to be connected and assembled separately, which can effectively reduce assembly steps and simplify the fuse assembly operation.

[0055] The fuses disclosed in this application can be used in various circuits. For example, they can be used, but are not limited to, in power distribution devices. The power distribution device with the fuse can be used in electrical devices that use battery devices as power sources or in various energy storage systems that use battery devices as energy storage elements.

[0056] Electrical devices can include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0057] Electrical devices can refer to devices that use power batteries as their power source. The power source provides electrical energy to the electrical device, thereby driving its operation. Electrical devices typically have power distribution devices, which control the operation of high-voltage circuits within the device. Here, "voltage" in high-voltage circuit refers to voltage, and a high-voltage circuit is a circuit with a voltage exceeding 60V. For example, a power distribution device can be a high-voltage distribution box, which is responsible for the power distribution and management of high-voltage circuits in the electrical device. For instance, a PDU (Power Distribution Unit) used in new energy vehicles is responsible for the power distribution and management of the high-voltage circuits in the new energy vehicle, providing functions such as charging and discharging control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, and low-voltage control, protecting and monitoring the operation of the high-voltage circuits. A high-voltage distribution box can also refer to a component used in batteries to control battery charging and discharging, such as a BDU (Battery Disconnect Unit). A BDU is a high-voltage distribution box specifically designed for batteries, controlling their charging and discharging.

[0058] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0059] Please refer to Figure 1, which is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0060] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0061] Please refer to Figure 2, which is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 110 for providing voltage and capacity. The battery cell assembly 110 may include multiple battery cells 20, which are connected in series, parallel, or mixed connection via a busbar.

[0062] In some embodiments, the battery cell assembly 110 is typically formed by arranging a plurality of battery cells 20.

[0063] As an example, the battery cell assembly 110 can be a battery module, which is formed by arranging and fixing multiple battery cells 20 into an independent module. As an example, the battery module can be formed by bundling multiple battery cells 20 together with cable ties.

[0064] In some embodiments, the battery device may be a battery pack, which includes a housing 10 and one or more battery cell assemblies 110, the battery cell assemblies 110 being housed within the housing 10.

[0065] As an example, the battery cell assembly 110 can be a battery module, and the battery cell assembly 110 can be housed in the housing 10 by fixing the battery module in the housing 10.

[0066] As an example, the battery cell assembly 110 can also be housed in the housing 10 by directly fixing multiple battery cells 20 to the housing 10.

[0067] As an example, the housing 10 may include a first housing and a second housing. The first housing and the second housing are fastened together to form a closed space inside the housing 10 to house the battery cell assembly 110. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0068] As an example, the housing 10 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that the interior of the housing 10 forms an enclosed space to house the battery cell assembly 110.

[0069] In some embodiments, the housing 10 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 10 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 10 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0070] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery cells 20, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft.

[0071] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after the battery cell has been discharged by recharging to activate the active materials.

[0072] The battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0073] Please refer to Figure 3, which is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. A battery cell 20 refers to the smallest unit constituting a battery device 100. As shown in Figure 3, the battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0074] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved reliability. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0075] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The housing 22 can be made of various materials, such as, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0076] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals 21a to form a current loop.

[0077] According to some embodiments of this application, referring to Figures 5 to 7, this application provides a fuse 400, including a fuse body 410, a first conductor 420, and a second conductor 430. The fuse body 410 has a first end 411 and a second end 412. The first conductor 420 includes a first main body portion 421, which is connected to the first end 411. The first main body portion 421 extends outward to form a first connecting portion 422, which is flush with the first main body portion 421 and is used to connect a first electrical device 500. The first main body portion 421 is bent toward the second end 412 to form a first heat dissipation portion 423. The second conductor 430 is connected to the second end 412.

[0078] The fuse body 410 refers to the main part that enables the fuse to break the circuit. The fuse body 410 includes a fuse wire and a housing for encapsulating the fuse wire. The first end 411 and the second end 412 of the fuse body 410 are respectively the two opposite ends used for electrically connecting the fuse wire. Thus, when the fuse 400 is connected in series in a circuit, current can flow from the first end 411 and the second end 412 through the fuse wire inside the fuse body 410 to achieve circuit protection by breaking the circuit.

[0079] The first conductor 420 is part of the fuse 400 and is used to electrically connect with the first electrical device 500 to achieve series assembly of the fuse 400. The first electrical device can refer to a relay, current sensor, resistor, etc. The first conductor 420 refers to a conductive sheet or busbar with good conductivity; for example, the first conductor 420 can be, but is not limited to, a copper sheet, aluminum sheet, silver sheet, gold sheet, etc.

[0080] The first conductor 420 includes a first main body 421; wherein, the first main body 421 refers to a portion of the first conductor 420, and the first main body 421 is used to connect with the first end 411 to realize electrical conduction between the first conductor 420 and the fuse body 410. The first main body 421 can be fixed to the first end 411 by welding, fastener fastening or other means; exemplaryly, in some embodiments, the first main body 421 can be fastened to the first end 411 by fasteners such as screws, so that the first main body 421 and the first end 411 are in close contact to realize electrical conduction.

[0081] Optionally, the first main body 421 may be, but is not limited to, a circular conductive sheet, a rectangular conductive sheet, or other polygonal conductive sheets; for example, in some embodiments, when the fuse body 410 has a rectangular structure, the first end 411 of the fuse body 410 is a rectangular end face, so the first main body 421 may correspond to a rectangular conductive sheet.

[0082] The first conductor 420 also includes a first connecting portion 422. The first connecting portion 422 refers to a part of the first conductor 420, and is formed by extending outward from the first main body 421. The first connecting portion 422 and the first main body 421 are integrally formed. The first connecting portion 422 is used to connect with the first electrical device 500 to achieve electrical conduction between the fuse body 410 and the first electrical device 500. Optionally, the first connecting portion 422 can be connected to the first electrical device 500 by fastening with bolts or other fasteners. The first connecting portion 422 is flush with the first main body 421, that is, the first connecting portion 422 is formed by extending outward from the first main body 421 along the extension direction of the plane. In this way, the connection end face of the first connecting portion 422 and the first electrical device 500 is in the same plane as the connection end face of the first main body 421 and the first end 411, which can effectively improve the assembly regularity of the first electrical device 500 and the fuse body 410. In some embodiments, a clearance groove 420a may be formed between the first connecting portion 422 and the first main body portion 421, and the clearance groove 420a is formed through the thickness direction of the first connecting portion 422. In this way, when the fuse 400 is assembled and used, the first conductor 420 can use the clearance groove 420a to avoid external structures (such as the base used to assemble the fuse 400), so as to facilitate the assembly and use of the fuse 400.

[0083] The first conductor 420 also includes a first heat dissipation portion 423, which is used to achieve heat dissipation, for example, by radiating heat outward from the first heat dissipation portion 423, or by using a heat-conducting structure or cooling plate to conduct heat through contact with the first heat dissipation portion 423. The first heat dissipation portion 423 refers to a part of the first conductor 420, and is formed by bending the first main body portion 421 toward the second end 412. Thus, the first heat dissipation portion 423 and the first main body portion 421 are an integral structure, and are located on different sides of the fuse body 410. When the first heat dissipation portion 423 dissipates heat outward by radiating heat, its impact on the first main body portion 421 is low; or, when the first heat dissipation portion 423 dissipates heat by contacting the heat-conducting component, the probability of interference between the heat-conducting component and the first main body portion 421 is low. In some embodiments, the first heat dissipation part 423 is also connected to the first connecting part 422 to form an integral unit, that is, the three parts of the first heat dissipation part 423, the first connecting part 422 and the first main body part 421 are all connected.

[0084] The second conductor 430, as part of the fuse 400, is used for electrical connection with external structures such as the second electrical device 600 or other electrical conductors to achieve series assembly of the fuse 400. The second electrical device 600 can refer to a relay, current sensor, resistor, etc. The second conductor 430 refers to a conductive sheet or busbar with superior conductivity; exemplarily, the second conductor 430 can be, but is not limited to, a copper sheet, aluminum sheet, silver sheet, gold sheet, etc.

[0085] With this configuration, the first conductor 420 and the second conductor 430 are part of the fuse 400. The first conductor 420 and the second conductor 430 are respectively disposed at the first end 411 and the second end 412 of the fuse body 410. Thus, when the fuse 400 is assembled in series in a circuit, it is only necessary to electrically connect the first connecting part 422 of the first conductor 420 and the second conductor 430 to the external structure, without having to connect the fuse body 410, thereby effectively reducing the assembly process and simplifying the assembly operation. In addition, the first heat dissipation part 423 can also dissipate heat to reduce the temperature rise of the first conductor 420, thereby reducing the probability of the fuse body 410 accidentally blowing.

[0086] Referring to Figures 5 to 8, in some embodiments, the second conductor 430 includes a second main body 431, which is bent toward the first end 411 to form a second heat dissipation portion 432. The second heat dissipation portion 432 extends outward to form a second connecting portion 433. The second connecting portion 433 is parallel to the second heat dissipation portion 432 and is used to connect the second electrical device 600.

[0087] The second conductor 430 includes a second main body 431; wherein, the second main body 431 refers to a portion of the second conductor 430, and the second main body 431 is used to connect with the second end 412 to achieve electrical conduction between the second conductor 430 and the fuse body 410. The second main body 431 can be fixed to the second end 412 by welding, fastener fastening, or other methods; exemplaryly, in some embodiments, the second main body 431 can be fastened to the second end 412 by fasteners such as screws, thereby making the second main body 431 and the second end 412 in close contact to achieve electrical conduction.

[0088] Optionally, the second main body 431 may be, but is not limited to, a circular conductive sheet, a rectangular conductive sheet, or other polygonal conductive sheets; for example, in some embodiments, when the fuse body 410 has a rectangular structure, the second end 412 of the fuse body 410 is a rectangular end face, so the second main body 431 may correspond to a rectangular conductive sheet.

[0089] The second conductor 430 also includes a second heat dissipation portion 432, which is used to achieve heat dissipation, for example, by radiating heat outward from the second heat dissipation portion 432, or by using a heat-conducting structure or cooling plate to conduct heat through contact with the second heat dissipation portion 432. The second heat dissipation portion 432 refers to a part of the second conductor 430, and is formed by bending the second main body portion 431 towards the first end 411. Thus, the second heat dissipation portion 432 and the second main body portion 431 are an integral structure, and are located on different sides of the fuse body 410. When the second heat dissipation portion 432 dissipates heat outward by radiating heat, its impact on the second main body portion 431 is low; or, when the second heat dissipation portion 432 dissipates heat by contacting the heat-conducting component, the probability of interference between the assembly of the heat-conducting component and the second main body portion 431 is low. In some embodiments, the first heat dissipation part 423 and the second heat dissipation part 432 may be located on different sides of the fuse body 410, or the first heat dissipation part 423 and the second heat dissipation part 432 may be located on the same side of the first heat dissipation part 423.

[0090] The second conductor 430 also includes a second connecting portion 433; the second connecting portion 433 refers to a part of the second conductor 430, and the second connecting portion 433 extends outward from the second heat dissipation portion 432, and the second connecting portion 433 and the second heat dissipation portion 432 are integral structures. The second connecting portion 433 is used to connect with the second electrical device 600 to realize electrical conduction between the fuse body 410 and the second electrical device 600. Optionally, the second connecting portion 433 can be connected to the second electrical device 600 by fastening with bolts or other fasteners; or the second connecting portion 433 can also be fastened to other conductive structures by fastening with bolts or other fasteners, and then connected to the second connector through the conductive structure. The second connecting portion 433 is parallel to the second heat dissipation portion 432. Optionally, the second connecting portion 433 can be flush with the second heat dissipation portion 432, or a height difference can be formed between the surfaces of the second connecting portion 433 and the second heat dissipation portion 432.

[0091] With this configuration, the second main body 431 is connected to the second end 412 of the fuse body 410, and the second heat dissipation part 432 is used to improve the heat dissipation effect. Thus, when assembling the fuse 400, it is only necessary to connect the second connecting part 433 to the second electrical component 600, which effectively simplifies the assembly process of the fuse 400.

[0092] Referring to Figures 6 to 8, in some embodiments, the second connecting portion 433 is offset relative to the second heat dissipation portion 432 toward the fuse body 410, and the surfaces of the second connecting portion 433 and the second heat dissipation portion 432 form a height difference.

[0093] In this embodiment, the second connecting portion 433 is offset relative to the second heat dissipation portion 432 towards the fuse body 410, that is, the second connecting portion 433 is closer to the fuse body 410. Optionally, the offset setting of the second connecting portion 433 can be achieved by bending. By bending the connection between the second connecting portion 433 and the second heat dissipation portion 432 at least twice, the second connecting portion 433 is made to settle relative to the second heat dissipation portion 432, thereby creating a height difference between the surfaces of the second connecting portion 433 and the second heat dissipation portion 432.

[0094] For example, in some embodiments, the connection between the second connecting portion 433 and the second heat dissipation portion 432 can be bent twice, that is, first bent towards the fuse body 410, and then bent away from the second heat dissipation portion 432, so that the second connecting portion 433 is offset close to the fuse body 410 and the second connecting portion 433 and the second heat dissipation portion 432 remain parallel.

[0095] With this configuration, when the second connecting part 433 is directly connected to the second connector or electrically connected through other conductive parts, the height difference formed between the surfaces of the second connecting part 433 and the second heat dissipation part 432 can be used to avoid the connection operation of the second connecting part 433, thereby reducing the space requirements of the second connecting part 433 for assembly.

[0096] Referring to Figures 6 to 8, in some embodiments, the first heat dissipation part 423 and the second heat dissipation part 432 are located on the same side of the fuse body 410.

[0097] The first heat dissipation part 423 is formed by bending the first main body part 421 toward the second end 412, and the second heat dissipation part 432 is formed by bending the second main body part 431 toward the first end 411. The first heat dissipation part 423 and the second heat dissipation part 432 can be bent toward the same side of the fuse 400 so that the first heat dissipation part 423 and the second heat dissipation part 432 are located on the same side.

[0098] It should be understood that there should be sufficient spacing between the first heat dissipation part 423 and the second heat dissipation part 432 to meet the requirements of electrical clearance and creepage distance, and reduce the probability of short circuit arcing.

[0099] With this configuration, both the first heat dissipation part 423 and the second heat dissipation part 432 are used to achieve heat dissipation function. By placing the first heat dissipation part 423 and the second heat dissipation part 432 on the same side of the fuse body 410, the first heat dissipation part 423 and the second heat dissipation part 432 can be simultaneously subjected to heat exchange and cooling treatment by an external heat conduction structure or cooling structure, thereby improving the heat dissipation effect of the first heat dissipation part 423 and the second heat dissipation part 432.

[0100] Please refer to Figures 6 to 8. In some embodiments, the first heat dissipation part 423 and the second heat dissipation part 432 are flush.

[0101] In this embodiment, the surfaces of the first heat dissipation part 423 and the second heat dissipation part 432 are set to be flush, that is, the surface of the first heat dissipation part 423 facing away from the fuse body 410 and the surface of the second heat dissipation part 432 facing away from the fuse body 410 are flush.

[0102] With this configuration, by setting the first heat dissipation part 423 and the second heat dissipation part 432 to be flush, the first heat dissipation part 423 and the second heat dissipation part 432 can simultaneously contact the external heat conduction structure or cooling structure to perform heat dissipation operation.

[0103] Please refer to Figures 6 to 8. In some embodiments, the first connecting portion 422 and the second connecting portion 433 are located on opposite sides of the fuse body 410.

[0104] The first connecting portion 422 and the second connecting portion 433 can be located on any opposite sides of the fuse body 410. For illustrative purposes, the fuse body 410 can be shown as having a prism structure. Along the length of the fuse body 410, the first end 411 and the second end 412 are located at opposite ends of the fuse body 410. The first main body portion 421 is connected to the first end 411, and the first main body portion 421 can extend along the width of the fuse body 410 towards one end to form the first connecting portion 422. Simultaneously, the second main body portion 431 is connected to the second end 412, and the second main body portion 431 can be bent along the length of the fuse body 410 towards the first end 411 to form the second heat dissipation portion 432. The second heat dissipation portion 432 can extend along the width of the fuse body 410 towards the other end and be bent to form the second connecting portion 433. Thus, the first connecting part 422 and the second connecting part 433 will be located at opposite ends of the fuse body 410 along the width direction.

[0105] With this configuration, the first connecting part 422 and the second connecting part 433 can be connected to each other on opposite sides of the fuse body 410, which can effectively reduce the mutual influence between the first connecting part 422 and the second connecting part 433.

[0106] Please refer to Figures 6 to 8. In some embodiments, the second connecting portion 433 is provided with a second mounting hole 4331.

[0107] The second mounting hole 4331 is a through hole structure formed on the second connecting portion 433 and extending along the thickness direction of the second connecting portion 433; optionally, the number of the second mounting holes 4331 can be one, two or more. The second mounting hole 4331 can be, but is not limited to, various hole shapes such as round hole, oblong hole, and rectangular hole.

[0108] The second mounting hole 4331 can be formed at any location on the second connecting portion 433; for example, the second mounting hole 4331 can be formed in the middle region of the second connecting portion 433, or the second mounting hole 4331 can also be formed in the outer peripheral region of the second connecting portion 433, etc.

[0109] With this configuration, the second connection part 433 can be locked onto the second electrical component 600 using the second connection hole, or the second connection part 433 can be locked and fixed to other electrical conductor structures using fasteners through the second connection hole.

[0110] Please refer to Figures 6 to 8. In some embodiments, the second main body 431 is provided with a second countersunk hole 4311, and the fuse 400 also includes a second fastener 434, which passes through the second countersunk hole 4311 and is locked to the second end 412.

[0111] The second countersunk hole 4311 refers to a hole type in which the upper half of the hole section is conical or tapered, forming a certain angle with the lower half of the hole section, so that the head of the second fastener 434 can be fully or partially embedded in the upper half of the hole section, flush with or lower than the surface of the hole opening. The second fastener 434 can be a countersunk screw.

[0112] The number of second countersunk holes 4311 can be one, two or more; the second countersunk holes 4311 can be opened in the middle region of the second main body 431, or the second countersunk holes 4311 can be opened in the outer peripheral region of the second main body 431.

[0113] With this configuration, the second fastener 434 can pass through the second countersunk hole 4311 and the second main body 431 can be locked to the second end 412 to achieve connection. The second countersunk hole 4311 can be used to accommodate the second fastener 434 to reduce the impact of the second fastener 434 protruding out of the second main body 431 on the overall size.

[0114] Please refer to Figures 6 to 8. In some embodiments, the first connecting portion 422 is provided with a first mounting hole 4221.

[0115] The first mounting hole 4221 is a through hole structure formed on the first connecting portion 422 and extending along the thickness direction of the first connecting portion 422; optionally, the number of the first mounting holes 4221 can be one, two or more. The first mounting hole 4221 can be, but is not limited to, various hole shapes such as round hole, oblong hole, and rectangular hole.

[0116] The first mounting hole 4221 can be formed at any location on the first connecting portion 422; for example, the first mounting hole 4221 can be formed in the middle region of the first connecting portion 422, or the first mounting hole 4221 can also be formed in the outer peripheral region of the first connecting portion 422, etc.

[0117] With this configuration, the first connecting part 422 can be locked onto the second electrical component 600 using the first mounting hole 4221, or the first connecting part 422 can be locked and fixed onto other electrical conductor structures using fasteners through the first mounting hole 4221.

[0118] Please refer to Figures 6 to 8. In some embodiments, a sampling hole 4222 is provided on the first connecting part 422.

[0119] The sampling hole 4222 is used for the sampling line to be latched and connected, so that the sampling operation of the first connection part 422 can be performed, such as sampling the current and voltage data of the first connection part 422.

[0120] Optionally, the sampling hole 4222 may be, but is not limited to, a through hole structure, a countersunk hole structure, etc. The sampling hole 4222 may be formed at any location of the first connecting portion 422, such as in the middle region of the first connecting portion 422, or in the outer peripheral region of the first connecting portion 422, etc.

[0121] With this setup, the sampling line can be fixed using the sampling hole 4222 to achieve information acquisition operation of the first connection part 422.

[0122] It should be understood that, in some embodiments, sampling holes 4222 may be provided on the first main body 421 or the first heat dissipation part 423 to realize information collection operations.

[0123] Referring to Figures 6 to 8, in some embodiments, a first countersunk hole 4211 is provided on the first main body 421, and the fuse 400 also includes a first fastener 424, which passes through the first countersunk hole 4211 and is locked to the first end 411.

[0124] The first countersunk hole 4211 refers to a hole type in which the upper half of the hole section is conical or conical, forming a certain angle with the lower half of the hole section, so that the head of the first fastener 424 can be fully or partially embedded in the upper half of the hole section, flush with or lower than the surface of the hole opening. The first fastener 424 can be a countersunk screw.

[0125] The number of first countersunk holes 4211 can be one, two or more; the first countersunk holes 4211 can be opened in the middle region of the first main body 421, or the first countersunk holes 4211 can be opened in the outer peripheral region of the first main body 421.

[0126] With this configuration, the first fastener 424 can pass through the first countersunk hole 4211 and the first main body 421 can be locked to the first end 411 to achieve connection. The first countersunk hole 4211 can be used to accommodate the head of the first fastener 424 to reduce the impact of the first fastener 424 protruding outward from the second main body 431 on the overall size.

[0127] The fuse 400 provided in this application will now be described in detail according to specific embodiments.

[0128] Referring to Figures 5 to 8, in some embodiments, the fuse 400 includes a fuse body 410, a first conductor 420, and a second conductor 430. The fuse body 410 has a first end 411 and a second end 412. The first conductor 420 includes a first main body portion 421 connected to the first end 411. The first main body portion 421 extends outward to form a first connecting portion 422, which is flush with the first main body portion 421. The first connecting portion 422 is used to connect a first electrical device 500. The first main body portion 421 is bent toward the second end 412 to form a first heat dissipation portion 423. The second conductor 430 includes a second main body 431, which is bent toward the first end 411 to form a second heat dissipation portion 432. The second heat dissipation portion 432 extends outward to form a second connecting portion 433. The second connecting portion 433 is offset toward the fuse body 410 relative to the second heat dissipation portion 432, and the surfaces of the second connecting portion 433 and the second heat dissipation portion 432 form a height difference. The second connecting portion 433 is parallel to the second heat dissipation portion 432. The second connecting portion 433 is used to connect the second electrical device 600.

[0129] The first heat dissipation part 423 and the second heat dissipation part 432 are located on the same side of the fuse body 410, and the first heat dissipation part 423 and the second heat dissipation part 432 are flush.

[0130] The first connecting part 422 is provided with a first mounting hole 4221 and a sampling hole 4222; the first main body part 421 is provided with a first countersunk hole 4211; the fuse 400 also includes a first fastener 424, which passes through the first countersunk hole 4211 and is locked to the first end 411.

[0131] The second connecting part 433 has a second mounting hole 4331; the second main body part 431 has a second countersunk hole 4311; the fuse 400 also includes a second fastener 434, which passes through the second countersunk hole 4311 and is locked to the second end 412.

[0132] Referring to Figures 4 to 6, this application embodiment also provides a power distribution device 2000, including a first electrical component 500, a second electrical component 600, and a fuse 400 as described above. The first connection portion 422 of the fuse 400 is connected to the first electrical component 500, and the second connection portion 433 of the fuse 400 is connected to the second electrical component 600.

[0133] The first electrical component 500 can refer to a relay, current sensor, resistor, etc. The first connecting part 422 of the fuse 400 is connected to the first electrical component 500; optionally, the first connecting part 422 of the fuse 400 can be directly connected to the terminal of the first electrical component 500; or, the first connecting part 422 of the fuse 400 can also be connected to an electrical connecting piece, and then connected to the terminal of the first electrical component 500 through the electrical connecting piece.

[0134] Similarly, the second electrical device 600 can refer to a relay, current sensor, resistor, etc. The second connection portion 433 of the fuse 400 is connected to the second electrical device 600; optionally, the second connection portion 433 of the fuse 400 can be directly connected to the terminal of the second electrical device 600; or, the second connection portion 433 of the fuse 400 can also be connected to an electrical connecting piece, and then connected to the terminal of the first electrical device 500 through the electrical connecting piece.

[0135] The power distribution device 2000 provided in this application embodiment includes the aforementioned fuse 400, thus making the assembly operation of the power distribution device 2000 simpler.

[0136] Referring to Figures 4 to 6, in some embodiments, the first electrical component 500 is a relay, and the second electrical component 600 is a current sensor. The relay and the current sensor are respectively disposed on opposite sides of the fuse body 410. The power distribution device 2000 also includes an electrical connector 700. The first connecting part 422 is connected to the high-voltage contact of the relay, the current sensor is connected to the electrical connector 700, and the electrical connector 700 is connected to the second connecting part 433.

[0137] A relay is an electrical device that connects or disconnects a circuit based on changes in an input quantity (such as voltage, current, temperature, speed, or time). A relay includes a housing, an electromagnet, and a coil. When the input quantity to the coil reaches a specified value, the electromagnet moves under the magnetic force of the coil. This movement of the electromagnet causes the high-voltage contacts to move, thereby changing the on / off state of the controlled circuit.

[0138] The first connecting part 422 is connected to the high-voltage contact of the relay. For example, fasteners such as bolts can be used to pass through the first mounting hole 4221 opened on the first connecting part 422 and lock it to the high-voltage contact to achieve electrical connection.

[0139] A current sensor can refer to a current detection device connected in series with a relay; among them, current sensors can be, but are not limited to, shunts, electromagnetic current transformers, electronic current transformers, etc.

[0140] A current sensor is connected to an electrical connector 700, and the electrical connector 700 is connected to a second connecting part 433; that is, the second connecting part 433 can be connected to the electrical connector 700 to achieve electrical conduction with the current sensor. The electrical connector 700 can be, but is not limited to, a conductive sheet, a conductive busbar, or other conductor structure with good conductivity. For example, in some embodiments, the electrical connector 700 can be a copper conductive sheet, and the current sensor can be a Hall effect current sensor. The Hall effect current sensor can be arranged around the electrical connector 700 to achieve current detection. Meanwhile, the second connecting part 433 can be fixedly connected to the electrical connector 700 by fastener fastening.

[0141] With this configuration, the first connection part 422 of the fuse 400 can be electrically connected to the current sensor through the electrical connector 700, while the second connection part 433 of the fuse 400 can be directly connected to the high-voltage contact of the relay, so as to realize the connection and assembly of the fuse 400.

[0142] Referring to Figures 4 to 6, in some embodiments, the power distribution device 2000 further includes a first housing 2100 and a second housing 2200. A first electrical component 500, a second electrical component 600, and a fuse 400 are disposed within the first housing 2100. The first housing 2100 has a first connection end 2101, and a first heat dissipation portion 423 and a second heat dissipation portion 432 of the fuse 400 are disposed on the first connection end 2101. An opening 2201 is provided on the second housing 2200, and the second housing 2200 covers the first connection end 2101. At least a portion of the first heat dissipation portion 423 and a portion of the second heat dissipation portion 432 are exposed through the opening 2201.

[0143] The fuse 400, the first electrical component 500, and the second electrical component 600 can be fixedly assembled onto the first housing 2100 by means of snap-fit ​​connection, plug-in connection, fastener connection, etc.; or, the first housing 2100 can be provided with receiving grooves, mounting holes, and other receiving structures to receive the fuse 400, the first electrical component 500, and the second electrical component 600, and to provide protection and positioning for the fuse 400, the first electrical component 500, and the second electrical component 600.

[0144] The first housing 2100 has a first connection end 2101; it should be understood that the first connection end 2101 refers to the end of the second housing 2200 facing the first housing 2100. The second housing 2200 can cover the first connection end 2101 of the first housing 2100 to provide protection for the fuse 400, the first electrical component 500, and the second electrical component 600 mounted on the first housing 2100.

[0145] The first housing 2100 and the second housing 2200 can be connected by means of snap-fit, fastening, or fastener connection. For example, in some embodiments, the second housing 2200 and the first housing 2100 can be fixed by a snap-fit ​​connection. A snap-fit ​​protrusion can be provided on the outer peripheral wall of the first housing 2100, and a corresponding slot can be provided on the second housing 2200. The second housing 2200 is placed over the first connecting end 2101 of the first housing 2100, and the snap-fit ​​protrusion is engaged in the slot to achieve the connection.

[0146] The first heat dissipation part 423 is disposed on the first connecting end 2101. Optionally, the first heat dissipation part 423 can be fixed to the first connecting end 2101 by fasteners such as bolts and screws. Alternatively, an embedding groove can be opened on the first connecting end 2101, and the first heat dissipation part 423 can be fixedly embedded in the embedding groove. Alternatively, the first heat dissipation part 423 may not be connected to the first connecting end 2101, and the first heat dissipation part 423 is located above the end face of the first connecting end 2101 and abuts against or forms a certain gap with the first connecting end 2101.

[0147] The second heat dissipation part 432 is disposed on the first connecting end 2101. Optionally, the second heat dissipation part 432 can be fixed to the first connecting end 2101 by fasteners such as bolts and screws. Alternatively, an embedding groove can be opened on the first connecting end 2101, and the second heat dissipation part 432 can be fixedly embedded in the embedding groove. Alternatively, the second heat dissipation part 432 may not be connected to the first connecting end 2101, and the second heat dissipation part 432 is located above the end face of the first connecting end 2101 and abuts against or forms a certain gap with the first connecting end 2101.

[0148] The second housing 2200 has an opening 2201; the opening 2201 refers to a through structure formed along the thickness direction of the second housing 2200. The number of openings 2201 can be one, two, three, or more, and the openings 2201 can be located anywhere on the second housing 2200, such as in the middle or at the outer edge. Thus, when the second housing 2200 covers the first connecting end 2101 of the first housing 2100, it can cover and protect the first connecting end 2101, while the openings 2201 allow at least a portion of the first heat dissipation part 423 and the second heat dissipation part 432 to be exposed, thereby reducing the impact of the second housing 2200 on the heat dissipation of the first heat dissipation part 423 and the second heat dissipation part 432.

[0149] With this configuration, the second housing 2200 can cover and protect the fuse 400, the first electrical component 500, and the second electrical component 600 located inside the first housing 2100. At the same time, the first heat dissipation part 423 and the second heat dissipation part 432 can be exposed from the opening 2201 to achieve the purpose of dissipating heat outward.

[0150] Referring to Figures 2 to 4, this application embodiment also provides a battery device 100, including a housing 10, a battery cell assembly 110, and a power distribution device 2000 as described above. The battery cell assembly 110 is housed within the housing 10, and the power distribution device 2000 is electrically connected to the battery cell assembly 110.

[0151] The battery device 100 provided in this application embodiment includes the aforementioned power distribution device 2000, thereby simplifying the assembly process of the battery device 100.

[0152] Referring to Figures 1 and 2, this application embodiment also provides an electrical device, including the battery device 100 as described above, which is used to provide electrical energy.

[0153] The electrical device provided in this application includes the battery device 100 described above, thereby simplifying the assembly process of the electrical device.

[0154] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fuse, characterized in that: include A fuse body having a first end and a second end; A first conductor, the first conductor including a first main body portion, the first main body portion being connected to the first end; The first main body extends outward to form a first connecting portion, which is flush with the first main body and is used to connect a first electrical component; the first main body bends toward the second end to form a first heat dissipation portion; as well as The second conductor is connected to the second end.

2. The fuse according to claim 1, characterized in that: The second conductor includes a second main body portion, which is bent toward the first end to form a second heat dissipation portion, and the second heat dissipation portion extends outward to form a second connecting portion; the second connecting portion is parallel to the second heat dissipation portion, and the second connecting portion is used to connect a second electrical device.

3. The fuse according to claim 2, characterized in that: The second connecting portion is offset relative to the second heat dissipation portion toward the fuse body, and the surfaces of the second connecting portion and the second heat dissipation portion form a height difference.

4. The fuse according to claim 2 or 3, characterized in that: The first heat dissipation part and the second heat dissipation part are located on the same side of the fuse body.

5. The fuse according to claim 4, characterized in that: The first heat dissipation part and the second heat dissipation part are flush.

6. The fuse according to any one of claims 2 to 5, characterized in that: The first connecting portion and the second connecting portion are located on opposite sides of the fuse body.

7. The fuse according to any one of claims 2 to 6, characterized in that: The second connecting part has a second mounting hole.

8. The fuse according to any one of claims 2 to 7, characterized in that: The second main body has a second countersunk hole, and the fuse also includes a second fastener, which passes through the second countersunk hole and is locked to the second end.

9. The fuse according to any one of claims 1 to 8, characterized in that: The first connecting part has a first mounting hole.

10. The fuse according to any one of claims 1 to 9, characterized in that: A sampling hole is provided on the first connecting part.

11. The fuse according to any one of claims 1 to 10, characterized in that: The first main body has a first countersunk hole, and the fuse also includes a first fastener, which passes through the first countersunk hole and is locked to the first end.

12. A power distribution device, characterized in that: It includes a first electrical component, a second electrical component, and a fuse as described in any one of claims 1 to 11, wherein a first connection portion of the fuse is connected to the first electrical component, and a second connection portion of the fuse is connected to the second electrical component.

13. The power distribution device according to claim 12, characterized in that: The first electrical component is a relay, and the second electrical component is a current sensor. The relay and the current sensor are respectively disposed on opposite sides of the fuse body. The power distribution device also includes an electrical connector. The first connector is connected to the high-voltage contact of the relay, the current sensor is connected to the electrical connector, and the electrical connector is connected to the second connector.

14. The power distribution device according to claim 12 or 13, characterized in that: The power distribution device further includes a first housing and a second housing, wherein the first electrical component, the second electrical component, and the fuse are disposed within the first housing; The first housing has a first connecting end, and the first heat dissipation part and the second heat dissipation part of the fuse are disposed on the first connecting end; The second housing has an opening, and the second housing covers the first connecting end, with at least a portion of the first heat dissipation part and at least a portion of the second heat dissipation part exposed through the opening.

15. A battery device, characterized in that: It includes a housing, a battery cell assembly, and a power distribution device as described in any one of claims 12 to 14, wherein the battery cell assembly is housed within the housing and the power distribution device is electrically connected to the battery cell assembly.

16. An electrical appliance, characterized in that: Includes the battery device as described in claim 15, wherein the battery device is used to provide electrical energy.

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