Fuse structure, high-voltage box, battery equipment and electric equipment

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to a fuse structure, a high-voltage box, battery equipment and electric equipment. Wherein the fuse structure comprises a plurality of fusing assemblies which are arranged in parallel, first ends of the fusing assemblies are electrically connected to form an input terminal of the fuse structure, second ends of the fusing assemblies are electrically connected to form an output terminal of the fuse structure, each fusing assembly comprises a fuse, and the internal resistances of the fusing assemblies are equal. By applying the technical scheme, the problem that a conventional fuse can not interrupt a circuit quickly enough to prevent the circuit from being damaged by short-time large current is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical equipment, and in particular relates to a fuse structure, a high-voltage box, a battery device and electrical equipment. Background Art

[0002] Fuses are connected in series in the protected circuits and equipment (for example, high-voltage transmission lines, power transformers, voltage transformers, etc.). The function of fuses is short-circuit protection. When the circuit or the equipment in the circuit is overloaded or fails, the current in the circuit where the fuse is located exceeds the specified value and after a certain period of time, the fuse element heats up and melts, thereby cutting off the circuit and achieving the purpose of protecting the circuit or equipment.

[0003] Typically, the rated current capacity value of the applicable fuse is selected based on the maximum expected operating current of the electric vehicle. Due to the nonlinear nature of the fuse, as the rated current capacity value of the fuse increases, the time required for the fuse to interrupt the circuit also increases, or the conventional fuse cannot meet the short-term high current required by the electric vehicle during acceleration. Therefore, the conventional fuse may not be able to interrupt the circuit quickly enough to prevent the short-term high current from damaging the circuit. Summary of the invention

[0004] The purpose of the present application is to provide a fuse structure, a high-voltage box, a battery device and an electrical device, aiming to solve the problem that conventional fuses may not be able to interrupt the circuit quickly enough to prevent short-term high current from damaging the circuit.

[0005] To achieve the above-mentioned purpose, according to the first aspect of the present application, the technical solution adopted in the present application is: a fuse structure, comprising a plurality of fuse components arranged in parallel, the first ends of each fuse component are electrically connected to form an input terminal of the fuse structure, the second ends of each fuse component are electrically connected to form an output terminal of the fuse structure, each fuse component includes a fuse, and the internal resistance of each fuse component is equal.

[0006] The fuse structure provided by the design of the present application is assembled on the circuit to provide short-circuit protection for each electrical load. When the circuit equipped with the fuse structure is powered on, the current flows into the input terminal of the fuse structure. Since the internal resistance of each fuse component is equal, the current is equally divided to each fuse component, so that the overcurrent of each fuse of each fuse component is equal. Then, the current flowing through each fuse component converges and outputs at the output terminal of the fuse structure, thereby providing the required short-term large current for the electrical load. In addition, when a short circuit fault occurs somewhere in the circuit, the large current caused by the short circuit flows through the fuse structure. Although the large current will be diverted to each fuse component, the current after diversion is still much larger than the maximum overcurrent of the fuse of each fuse component. Therefore, the thermal fuse in the fuse can generate a large amount of heat instantly when the large current flows and melts, thereby cutting off the circuit to protect the electrical load from being damaged.

[0007] In some embodiments of the present application, the plurality of fuse components include:

[0008] A first fuse assembly comprises a first fuse, a first connecting terminal and a second connecting terminal, wherein the first connecting terminal is electrically connected to an input terminal of the first fuse, and the second connecting terminal is electrically connected to an output terminal of the first fuse;

[0009] A second fuse assembly comprises a second fuse, a third connecting terminal and a fourth connecting terminal, wherein the third connecting terminal is electrically connected to an input terminal of the second fuse, and the fourth connecting terminal is electrically connected to an output terminal of the second fuse;

[0010] The first connection terminal and the third connection terminal are electrically connected to form an input terminal of the fuse structure, the second connection terminal and the fourth connection terminal are electrically connected to form an output terminal of the fuse structure, and the internal resistance of the first fuse component is equal to the internal resistance of the second fuse component.

[0011] The current of the circuit is input into the fuse structure through the input terminal of the fuse structure, and then the current is equally divided to the first fuse and the second fuse arranged in parallel, thereby reducing the overcurrent of each of the first fuse and the second fuse to be equal. Then, the current flowing through the first fuse component and the second fuse component converge and output at the output terminal of the fuse structure, thereby providing the required short-term large current for the electrical load. In addition, when a short circuit fault occurs somewhere in the circuit, the large current caused by the short circuit flows through the fuse structure. Although the large current will be divided into the first fuse component and the second fuse component, the current after the division is still much larger than the maximum overcurrent of the first fuse of the first fuse component and the second fuse of the second fuse component. Therefore, the thermal fuse in the first fuse and the thermal fuse in the second fuse can generate a large amount of heat instantaneously and melt when the large current flows, thereby cutting off the circuit to protect the electrical load from being damaged.

[0012] In some embodiments of the present application, the internal resistance of the first fuse is equal to the internal resistance of the second fuse, and the internal resistance of the first connection terminal is equal to the internal resistance of the third connection terminal, and the internal resistance of the second connection terminal is equal to the internal resistance of the fourth connection terminal. In this way, the service life of the fuse structure is not shortened compared with the conventional fuse of the related art, and the reliability is high.

[0013] In some embodiments of the present application, the first connection terminal is welded and fixed to the input terminal of the first fuse; and / or, the second connection terminal is welded and fixed to the output terminal of the first fuse; and / or, the third connection terminal is welded and fixed to the input terminal of the second fuse; and / or, the fourth connection terminal is welded and fixed to the output terminal of the second fuse. This improves the connection efficiency.

[0014] In some embodiments of the present application, the first connection terminal is connected to the input terminal of the first fuse by bolt connection, rivet connection or press riveting connection; and / or, the second connection terminal is connected to the output terminal of the first fuse by bolt connection, rivet connection or press riveting connection; and / or, the third connection terminal is connected to the input terminal of the second fuse by bolt connection, rivet connection or press riveting connection; and / or, the fourth connection terminal is connected to the output terminal of the second fuse by bolt connection, rivet connection or press riveting connection. In this way, not only the connection efficiency is improved, but also the first connection terminal and / or the second connection terminal and / or the first fuse can be easily replaced, and the third connection terminal and / or the fourth connection terminal and / or the second fuse can be easily replaced.

[0015] In some embodiments of the present application, the first connecting terminal and the third connecting terminal are integrally formed into a first connecting bar, and the two ends of the first connecting bar are electrically connected to the input terminal of the first fuse and the input terminal of the second fuse, respectively, and an input terminal of the fuse structure is provided between the two ends of the first connecting bar, which is conducive to simplifying the component structure of the fuse structure and reducing the cost of the fuse structure.

[0016] In some embodiments of the present application, the first connecting bar is a copper sheet or an aluminum sheet, which helps to reduce the working heat generated by the fuse structure when the circuit is normally turned on.

[0017] In some embodiments of the present application, the thickness of the first connecting bar is less than 10 mm, which helps to reduce the overall volume of the fuse structure.

[0018] In some embodiments of the present application, the second connecting terminal and the fourth connecting terminal are integrally formed into a second connecting bar, and the two ends of the second connecting bar are electrically connected to the output terminal of the first fuse and the output terminal of the second fuse, respectively, and the output terminal of the fuse structure is provided between the two ends of the second connecting bar, which is conducive to simplifying the component structure of the fuse structure and reducing the cost of the fuse structure.

[0019] In some embodiments of the present application, the second connecting bar is a copper sheet or an aluminum sheet, which helps to reduce the working heat generated by the fuse structure when the circuit is normally turned on.

[0020] In some embodiments of the present application, the thickness of the second connecting bar is less than 10 mm, which helps to reduce the overall volume of the fuse structure.

[0021] In some embodiments of the present application, the thickness of the first connecting bar is equal to the thickness of the second connecting bar, which helps to reduce the overall volume of the fuse structure.

[0022] In some embodiments of the present application, the fuse structure further comprises a housing, the housing is provided with a receiving space, a first mounting platform and a second mounting platform, the first fuse and the second fuse are placed side by side in the receiving space, the input terminal of the first fuse, the input terminal of the second fuse and the first connecting bar are mounted on the first mounting platform, and the output terminal of the first fuse, the output terminal of the second fuse and the second connecting bar are mounted on the second mounting platform. In this way, the assembly efficiency of the fuse structure is improved.

[0023] In some embodiments of the present application, the input terminal of the first fuse and one end of the first connecting bar are locked to the first mounting platform by bolts, the input terminal of the second fuse and the other end of the first connecting bar are locked to the first mounting platform by bolts, the output terminal of the first fuse and one end of the second connecting bar are locked to the second mounting platform by bolts, and the output terminal of the second fuse and the other end of the second connecting bar are locked to the second mounting platform by bolts. In this way, the assembly efficiency of the fuse structure is improved.

[0024] In some embodiments of the present application, the portion of the input terminal of the fuse structure to one end of the first connecting bar and the portion of the input terminal of the fuse structure to the other end of the first connecting bar are symmetrically arranged relative to the input terminal of the fuse structure; and / or, the portion of the output terminal of the fuse structure to one end of the second connecting bar and the portion of the output terminal of the fuse structure to the other end of the second connecting bar are symmetrically arranged relative to the output terminal of the fuse structure.

[0025] According to the second aspect of the present application, a high voltage box is provided. Specifically, the high voltage box includes the aforementioned fuse structure.

[0026] According to the third aspect of the present application, a battery device is provided. Specifically, the battery device includes a battery and the high-voltage box as described above, and the high-voltage box is electrically connected to the battery.

[0027] According to the fourth aspect of the present application, a design provides an electrical device, which includes an electrical load and the aforementioned battery device, wherein the battery device is electrically connected to the electrical load. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art 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 these drawings without paying creative work.

[0029] Figure 1 This is a schematic diagram of the assembly structure of a fuse structure according to an embodiment of the present application;

[0030] Figure 2 This is a schematic diagram of the assembly structure of another fuse structure according to an embodiment of the present application;

[0031] Figure 3 A schematic diagram showing one side of the assembly position of the fuse structure in the high voltage box of the embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of an exploded view of a battery in a battery device according to an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of an electrical device according to an embodiment of the present application.

[0034] Among them, the reference numerals in the figure are:

[0035] 100. Fuse structure; 110. Input terminal of the fuse structure; 120. Output terminal of the fuse structure;

[0036] 10. First fuse assembly; 11. First fuse; 12. First connecting terminal; 13. Second connecting terminal;

[0037] 20. Second fuse assembly; 21. Second fuse; 22. Third connection terminal; 23. Fourth connection terminal;

[0038] 30. A first connecting bar;

[0039] 40. A second connecting bar;

[0040] 50. Shell; 51. First mounting platform; 52. Second mounting platform; 53. Accommodating space;

[0041] 61, first bolt; 62, second bolt; 63, third bolt; 64, fourth bolt;

[0042] 200, battery; 210, box shell; 211, box body; 212, box cover; 213, assembly space; 220, battery cell;

[0043] 300. Battery equipment;

[0044] 400, electrical equipment; 410, electrical load; 420, vehicle frame;

[0045] 500. High voltage box; 510. Electrical components. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the feature. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0050] As people's quality of life continues to improve, the frequency of people using cars for transportation has gradually increased, thus driving the continuous development of the automobile industry. The growth and development of new energy electric vehicles in recent years has been particularly significant, involving family cars for transportation, short-distance passenger buses, long-distance passenger rail trains, short-distance freight trucks and other types of vehicles. Among them, the development momentum of new energy electric vehicles (hereinafter referred to as electric vehicles, electric vehicles in a narrow sense refer to family cars for transportation) is particularly rapid, and the market share of electric vehicles in the automobile market has increased year by year.

[0051] Electric vehicles output power through drive motors, and drive motors require batteries to provide the required electrical energy. In addition, batteries also power the electrical loads on electric vehicles. Among them, the high-voltage box is an energy distribution unit that distributes energy to the drive motor and other electrical loads, and it plays an irreplaceable and important role in the electric vehicle as a whole. In addition, during the driving of the electric vehicle, each electrical load is powered on. In order to protect the power-on safety of each electrical load and prevent short-circuit faults from damaging the corresponding electrical loads, a fuse is set for the high-voltage box that distributes energy to each electrical load. When a short circuit occurs in the power-on circuit of any electrical load, causing the circuit flowing through the high-voltage box to be too large and exceeding the preset maximum current of the fuse, the thermal fuse in the fuse that plays a protective role generates a large amount of heat in a short period of time, and then the thermal fuse is melted by high temperature, thereby cutting off the circuit to protect the electrical load.

[0052] Generally, when an electric vehicle is accelerating, it is necessary to increase the ignition switch instantaneously, that is, to increase the power supply current to the drive motor instantaneously to increase the output power of the drive motor, and the current flowing through the high-voltage box in the circuit is instantaneously increased. In the related art, the high-voltage box is assembled using conventional fuses. As the requirements for 0-100km acceleration performance of electric vehicles continue to increase, and due to the nonlinear nature of the fuse, as the rated current capacity value of the fuse increases, the time required for the fuse to interrupt the circuit also increases, or conventional fuses cannot meet the short-term high current required by electric vehicles during acceleration. Therefore, conventional fuses may not be able to interrupt the circuit quickly enough to prevent damage to the circuit by short-term high currents.

[0053] Based on the above considerations, the embodiment of the present application is designed to provide a fuse structure, and the fuse structure is assembled and applied to a high-voltage box, thereby forming a new high-voltage box that can meet the short-term high current requirements of electric vehicles during acceleration. Furthermore, the high-voltage box is assembled with a battery to form a battery device, and the battery device is assembled on the electric vehicle, so that the high-voltage box distributes the energy of the battery to the electric loads such as the drive motor of the electric vehicle. In addition, the high-voltage box equipped with the fuse structure provided by the design of the present application can better protect each electrical load when a short circuit occurs in the circuit, and prevent the electrical load from being damaged due to a short circuit.

[0054] The fuse structure 100 provided by the embodiment of the present application includes a plurality of fuse components arranged in parallel, the first ends of the fuse components are electrically connected to form an input terminal 110 of the fuse structure, the second ends of the fuse components are electrically connected to form an output terminal 120 of the fuse structure, each fuse component includes a fuse, and the internal resistance of each fuse component is equal. The fuse of each fuse component can be assembled using conventional fuses in the relevant technology.

[0055] The fuse structure 100 provided by the application design is installed on the circuit to provide short-circuit protection for each electrical load. When the circuit equipped with the fuse structure 100 is powered on, current flows into the input terminal 110 of the fuse structure. Since the internal resistance of each fuse component is equal, the current is equally divided to each fuse component, so that the overcurrent of each fuse of each fuse component is equal. Then, the current flowing through each fuse component is converged and output at the output terminal 120 of the fuse structure, thereby providing the required short-term large current for the electrical load. In addition, when a short circuit fault occurs somewhere in the circuit, the large current caused by the short circuit flows through the fuse structure 100. Although the large current will be diverted to each fuse component, the current after diversion is still much larger than the maximum overcurrent of the fuse of each fuse component. Therefore, the thermal fuse in the fuse can generate a large amount of heat instantly when the large current flows and melts, thereby cutting off the circuit to protect the electrical load from being damaged. Subsequently, after the short circuit fault in the circuit was eliminated and the fuse of the corresponding fuse component was replaced, the circuit was able to work normally again.

[0056] Among them, in the actual finished products of each fuse component, there may be differences in the internal resistance of each fuse component due to tolerances in production assembly, material selection, component manufacturing, etc. However, the difference in internal resistance is controlled within 5%-7%, that is, within 0.01mΩ, so it can be considered that the internal resistance of each fuse component is equal and within a reasonable allowable tolerance.

[0057] like Figure 1As shown, in some embodiments of the present application, a plurality of fuse assemblies include but are not limited to a first fuse assembly 10 and a second fuse assembly 20 arranged in parallel. The first fuse assembly 10 includes a first fuse 11, a first connection terminal 12 and a second connection terminal 13, and the second fuse assembly 20 includes a second fuse 21, a third connection terminal 22 and a fourth connection terminal 23, wherein the first fuse 11 and the second fuse 21 can both be assembled using conventional fuses in the relevant technology. The first connection terminal 12 is electrically connected to the input terminal of the first fuse 11, the second connection terminal 13 is electrically connected to the output terminal of the first fuse 11, the third connection terminal 22 is electrically connected to the input terminal of the second fuse 21, and the fourth connection terminal 23 is electrically connected to the output terminal of the second fuse 21. Among them, one end of the first connection terminal 12 away from the input terminal of the first fuse 11 and one end of the third connection terminal 22 away from the input terminal of the second fuse 21 are electrically connected to form an input terminal 110 of the fuse structure, and one end of the second connection terminal 13 away from the output terminal of the first fuse 11 and one end of the fourth connection terminal 23 away from the output terminal of the second fuse 21 are electrically connected to form an output terminal 120 of the fuse structure. In addition, the internal resistance of the first fuse component 10 is equal to the internal resistance of the second fuse component 20.

[0058] In some embodiments of the present application, the plurality of fuse components may further include a third fuse component; or, the plurality of fuse components may further include a third fuse component and a fourth fuse component; etc. Taking the case where the plurality of fuse components include a first fuse component, a second fuse component, a third fuse component and a fourth fuse component arranged in parallel as an example, the internal resistance of the first fuse component, the internal resistance of the second fuse component, the internal resistance of the third fuse component and the internal resistance of the fourth fuse component are equal.

[0059] In the embodiment of the present application, the fuse structure equipped with the first fuse component 10 and the second fuse component 20 can basically meet the application requirements. Therefore, the following description is based on the example of the fuse structure equipped with the first fuse component 10 and the second fuse component 20.

[0060] exist Figure 1In the fuse structure 100 shown, the first fuse 11, the first connection terminal 12 and the second connection terminal 13 constitute the first fuse assembly 10, the second fuse 21, the third connection terminal 22 and the fourth connection terminal 23 constitute the second fuse assembly 20, and the internal resistance of the first fuse assembly 10 is equal to the internal resistance of the second fuse assembly 20. In this way, the current of the circuit is input into the fuse structure 100 through the input terminal 110 of the fuse structure, and then the current is equally divided to the first fuse 11 and the second fuse 21 arranged in parallel, thereby reducing the overcurrent of each of the first fuse 11 and the second fuse 21. Then, the current flowing through the first fuse assembly 10 and the second fuse assembly 20 is converged and output at the output terminal 120 of the fuse structure, thereby providing the required short-term large current for the electrical load. Furthermore, when a short circuit occurs somewhere in the circuit, a large current caused by the short circuit flows through the fuse structure 100. Although the large current will be shunted to the first fuse assembly 10 and the second fuse assembly 20, the shunted current is still much larger than the maximum overcurrent of the first fuse 11 of the first fuse assembly 10 and the second fuse 21 of the second fuse assembly 20. Therefore, the thermal fuse in the first fuse 11 and the thermal fuse in the second fuse 21 can generate a large amount of heat and melt when a large current flows, thereby cutting off the circuit to protect the electrical load from being damaged. Subsequently, after eliminating the short circuit fault in the circuit and replacing the fuse of the corresponding fuse assembly (replacing the first fuse 11 and / or the second fuse 21), the circuit can work normally again.

[0061] In some embodiments of the present application, the internal resistance of the first fuse 11 is equal to the internal resistance of the second fuse 21, and, as Figure 1 As shown, the internal resistance of the first connection terminal 12 is equal to the internal resistance of the third connection terminal 22, and the internal resistance of the second connection terminal 13 is equal to the internal resistance of the fourth connection terminal 23. In this way, the internal resistance of the first fuse assembly 10 and the second fuse assembly 20 are equal. In this way, when the circuit is powered on and working, the current flowing through the first fuse 11 and the second fuse 21 is always equal, that is, the working loads of the first fuse 11 and the second fuse 21 are always consistent, then the load life of the first fuse 11 and the second fuse 21 is almost equal, therefore, the service life of the first fuse 11 and the second fuse 21 is also the service life of the assembled fuse structure 100. In this way, the assembled fuse structure 100 not only meets the demand for short-term large current provided by the electrical load, but also has no shortened service life compared with the conventional fuses in the related art, and has high reliability.

[0062] In the actual product of the fuse, there may be tolerances in production assembly, material selection, and component manufacturing, so that there may be differences in the internal resistance of the first fuse 11 and the internal resistance of the second fuse 21. However, the difference in internal resistance is controlled within 5%-7%, that is, within 0.01mΩ, so it can be considered that the internal resistance of the first fuse 11 and the internal resistance of the second fuse 21 are equal, which is within a reasonable allowable tolerance.

[0063] In some embodiments of the present application, the internal resistance of the first fuse 11 and the internal resistance of the second fuse 21 may also be unequal, in which case the internal resistance of the first connection terminal 12 and the internal resistance of the third connection terminal 22 are unequal, and the internal resistance of the second connection terminal 13 and the internal resistance of the fourth connection terminal 23 are unequal. However, after assembly, the total internal resistance of the first fuse 11, the internal resistance of the first connection terminal 12, and the internal resistance of the second connection terminal 13 is equal to the total internal resistance of the internal resistance of the second fuse 21, the internal resistance of the third connection terminal 22, and the internal resistance of the fourth connection terminal 23, that is, the internal resistance of the first fuse assembly 10 is equal to the internal resistance of the second fuse assembly 20.

[0064] In some embodiments of the present application, the first connection terminal 12 is welded to the input terminal of the first fuse 11. The first connection terminal 12 and the input terminal of the first fuse 11 are welded to each other, including but not limited to brazing, hot melt welding, and soldering to improve connection efficiency.

[0065] In some embodiments of the present application, the second connection terminal 13 is fixed by welding to the output terminal of the first fuse 11. The second connection terminal 13 and the output terminal of the first fuse 11 are fixed by welding, including but not limited to brazing, hot melt welding, and soldering to improve connection efficiency.

[0066] In some embodiments of the present application, the third connection terminal 22 is welded to the input terminal of the second fuse 21. The third connection terminal 22 and the input terminal of the second fuse 21 are welded to each other, including but not limited to brazing, hot melt welding, and soldering to improve connection efficiency.

[0067] In some embodiments of the present application, the fourth connection terminal 23 is welded to the output terminal of the second fuse 21. The fourth connection terminal 23 and the output terminal of the second fuse 21 are welded to each other, including but not limited to brazing, hot melt welding, and soldering to improve connection efficiency.

[0068] In the fuse structure 100 of the present application, preferably, the first connecting terminal 12 is welded and fixed to the input terminal of the first fuse 11, the second connecting terminal 13 is welded and fixed to the output terminal of the first fuse 11, the third connecting terminal 22 is welded and fixed to the input terminal of the second fuse 21, and the fourth connecting terminal 23 is welded and fixed to the output terminal of the second fuse 21.

[0069] like Figure 1 and Figure 2 As shown, in some embodiments of the present application, the first connection terminal 12 is connected to the input terminal of the first fuse 11 through a first bolt 61. Further, as Figure 1 and Figure 2 As shown, the second connection terminal 13 and the output terminal of the first fuse 11 are connected by the second bolt 62. Through the first bolt 61, not only the first connection terminal 12 and the input terminal of the first fuse 11 can be quickly connected, but also the first connection terminal 12 and the input terminal of the first fuse 11 can be quickly disassembled and separated; through the second bolt 62, not only the second connection terminal 13 and the output terminal of the first fuse 11 can be quickly connected, but also the second connection terminal 13 and the output terminal of the first fuse 11 can be quickly disassembled and separated. In this way, the first connection terminal 12 and / or the second connection terminal 13 and / or the first fuse 11 can be easily replaced.

[0070] In some embodiments of the present application, the first connection terminal 12 and the input terminal of the first fuse 11 can also be connected by riveting, that is, the first connection terminal 12 and the input terminal of the first fuse 11 can be connected by a pull rivet connection or a press rivet connection. Furthermore, the second connection terminal 13 and the output terminal of the first fuse 11 can also be connected by a riveting connection, that is, the second connection terminal 13 and the output terminal of the first fuse 11 can be connected by a pull rivet connection or a press rivet connection. The above-mentioned bolt connection method is replaced by a riveting connection method.

[0071] like Figure 1 and Figure 2 As shown, in some embodiments of the present application, the third connection terminal 22 and the input terminal of the second fuse 21 are connected by a third bolt 63. Further, as Figure 1 and Figure 2As shown, the fourth connection terminal 23 and the output terminal of the second fuse 21 are connected by a fourth bolt 64. Through the third bolt 63, not only the third connection terminal 22 and the input terminal of the second fuse 21 can be quickly connected, but also the third connection terminal 22 and the input terminal of the second fuse 21 can be quickly disassembled and separated; through the fourth bolt 64, not only the fourth connection terminal 23 and the output terminal of the second fuse 21 can be quickly connected, but also the fourth connection terminal 23 and the output terminal of the second fuse 21 can be quickly disassembled and separated. In this way, the third connection terminal 22 and / or the fourth connection terminal 23 and / or the second fuse 21 can be easily replaced.

[0072] In some embodiments of the present application, the third connection terminal 22 and the input terminal of the second fuse 21 can also be connected by riveting, that is, the third connection terminal 22 and the input terminal of the second fuse 21 can be connected by a pull rivet connection or a press rivet connection. Furthermore, the fourth connection terminal 23 and the output terminal of the second fuse 21 can also be connected by a riveting connection, that is, the fourth connection terminal 23 and the output terminal of the second fuse 21 can be connected by a pull rivet connection or a press rivet connection. The above-mentioned bolt connection method is replaced by a riveting connection method.

[0073] like Figure 2 As shown, in some embodiments of the present application, the first connection terminal 12 and the third connection terminal 22 are integrally formed into a first connection bar 30, and the two ends of the first connection bar 30 are electrically connected to the input terminal of the first fuse 11 and the input terminal of the second fuse 21, respectively, and the input terminal 110 of the fuse structure is provided between the two ends of the first connection bar 30. The use of the integrally formed first connection bar 30 for assembly is conducive to simplifying the component structure of the fuse structure 100, so that the cost of the fuse structure 100 is reduced.

[0074] In some embodiments of the present application, the first connecting bar 30 is a copper sheet or an aluminum sheet. The material resistivity of copper and aluminum is lower than that of other metals, so the overall internal resistance of the first connecting bar 30 is lower, which helps to reduce the working heat generated by the fuse structure 100 when the circuit is normally turned on.

[0075] In some embodiments of the present application, the thickness of the first connecting bar 30 is preferably less than or equal to 10 mm, and the first connecting bar 30 only needs to be able to allow a short-term large current to pass (generally, it can allow a large current of more than 2000A to pass). Generally, the thickness of the first connecting bar 30 is selected to be between 3mm and 6mm, and the volume of the first connecting bar 30 is reduced while meeting a sufficiently large overcurrent, thereby reducing the overall volume of the fuse structure 100. In other embodiments of the present application, the thickness of the first connecting bar 30 can actually be greater than 10 mm, and the first connecting bar 30 is also required to be able to allow a short-term large current to pass (generally, it can allow a large current of more than 2000A to pass).

[0076] like Figure 2 As shown, in some embodiments of the present application, the second connection terminal 13 and the fourth connection terminal 23 are integrally formed into a second connection bar 40, and the two ends of the second connection bar 40 are electrically connected to the output terminal of the first fuse 11 and the output terminal of the second fuse 21, respectively, and the output terminal 120 of the fuse structure is provided between the two ends of the second connection bar 40. The use of the integrally formed second connection bar 40 for assembly is conducive to simplifying the component structure of the fuse structure 100, so that the cost of the fuse structure 100 is reduced.

[0077] In some embodiments of the present application, the second connecting bar 40 is a copper sheet or an aluminum sheet. The material resistivity of copper and aluminum is lower than that of other metals, so the overall internal resistance of the second connecting bar 40 is lower, which helps to reduce the working heat generated by the fuse structure 100 when the circuit is normally turned on.

[0078] In some embodiments of the present application, the thickness of the second connecting bar 40 is preferably less than or equal to 10 mm, and the second connecting bar 40 only needs to be able to allow a short-term large current to pass (generally, it can allow a large current of more than 2000A to pass). Generally, the thickness of the second connecting bar 40 is selected to be between 3mm and 6mm, and the volume of the second connecting bar 40 is reduced while meeting a sufficiently large overcurrent, thereby reducing the overall volume of the fuse structure 100. In other embodiments of the present application, the thickness of the second connecting bar 40 can actually be greater than 10 mm, and the second connecting bar 40 is also required to be able to allow a short-term large current to pass (generally, it can allow a large current of more than 2000A to pass).

[0079] Furthermore, in some embodiments of the present application, the thickness of the first connecting bar 30 is equal to the thickness of the second connecting bar 40 , which is beneficial to reducing the overall volume of the fuse structure 100 .

[0080] like Figure 1 and Figure 2As shown, in some embodiments of the present application, the fuse structure 100 further includes a housing 50, and the housing 50 is provided with a receiving space 53, a first mounting platform 51, and a second mounting platform 52. The first fuse 11 and the second fuse 21 are placed side by side in the receiving space 53. The input terminal of the first fuse 11, the input terminal of the second fuse 21, and the first connecting bar 30 are installed on the first mounting platform 51, and the output terminal of the first fuse 11, the output terminal of the second fuse 21, and the second connecting bar 40 are installed on the second mounting platform 52. Through the first mounting platform 51, not only the first connection bar 30, the input terminal of the first fuse 11 and the input terminal of the second fuse 21 can be quickly positioned and placed, but also the first connection bar 30, the input terminal of the first fuse 11 and the input terminal of the second fuse 21 can be quickly connected; through the second mounting platform 52, not only the second connection bar 40, the output terminal of the first fuse 11 and the input terminal of the second fuse 21 can be quickly positioned and placed, but also the second connection bar 40, the output terminal of the first fuse 11 and the output terminal of the second fuse 21 can be quickly connected. In this way, the assembly efficiency of the fuse structure 100 is improved.

[0081] like Figure 1 and Figure 2 As shown, in some embodiments of the present application, the input terminal of the first fuse 11 and one end of the first connecting bar 30 are locked to the first mounting platform 51 by a first bolt 61, the input terminal of the second fuse 21 and the other end of the first connecting bar 30 are locked to the first mounting platform 51 by a third bolt 63, the output terminal of the first fuse 11 and one end of the second connecting bar 40 are locked to the second mounting platform 52 by a second bolt 62, and the output terminal of the second fuse 21 and the other end of the second connecting bar 40 are locked to the second mounting platform 52 by a fourth bolt 64. In the fuse structure 100 of the present embodiment, the first connecting bar 30, the input terminal of the first fuse 11 and the input terminal of the second fuse 21 are connected to the first mounting platform 51 by bolt connection, and the second connecting bar 40, the output terminal of the first fuse 11 and the output terminal of the second fuse 21 are connected to the second mounting platform 52 by bolt connection, thereby improving the assembly efficiency of the fuse structure 100.

[0082] like Figure 2As shown, in some embodiments of the present application, the portion of the input terminal 110 of the fuse structure to one end of the first connection bar 30 and the portion of the input terminal 110 of the fuse structure to the other end of the first connection bar 30 are symmetrically arranged relative to the input terminal 110 of the fuse structure. In this embodiment, the first connection bar 30 is a rectangular copper sheet, and the input terminal 110 of the fuse structure is located in the middle of the copper sheet, that is, the internal resistance of the first connection terminal 12 is equal to the internal resistance of the third connection terminal 22. Further, the portion of the output terminal 120 of the fuse structure to one end of the second connection bar 40 and the portion of the output terminal of the fuse structure 100 to the other end of the second connection bar 40 are symmetrically arranged relative to the output terminal 120 of the fuse structure. In this embodiment, the second connection bar 40 is a rectangular copper sheet, and the output terminal 120 of the fuse structure is located in the middle of the copper sheet, that is, the internal resistance of the second connection terminal 13 is equal to the internal resistance of the fourth connection terminal 23.

[0083] In the fuse structure 100 designed and provided in the present application: the internal resistance of the first fuse 11 is equal to the internal resistance of the second fuse 21, and the first connecting bar 30 and the second connecting bar 40 are assembled in one piece, so that the internal resistance of the first connecting terminal 12 is equal to the internal resistance of the third connecting terminal 22, and the internal resistance of the second connecting terminal 13 is equal to the internal resistance of the fourth connecting terminal 23, so that the internal resistance of the first fuse assembly 10 is equal to the internal resistance of the second fuse assembly 20. In addition, the first connecting bar 30, the input terminal of the first fuse 11 and the input terminal of the second fuse 21 are all bolted to the first mounting platform 51 of the housing 50, and the second connecting bar 40, the output terminal of the first fuse 11 and the output terminal of the second fuse 21 are all bolted to the second mounting platform 52 of the housing 50.

[0084] According to the second aspect of the present application, a high voltage box 500 is designed and provided, such as Figure 3 Specifically, the high voltage box 500 includes the aforementioned fuse structure 100. In the high voltage box 500, the fuse structure 100 is arranged in series between the electrical component 510 of the high voltage box 500 and the electrical load, and the high voltage box 500 distributes energy to the electrical load to realize power supply.

[0085] According to the third aspect of the present application, a battery device 300 is provided. Specifically, the battery device 300 includes a battery 200 and a high-voltage box 500 as described above, and the high-voltage box 500 is electrically connected to the battery 200.

[0086] like Figure 4As shown, in some embodiments of the present application, the battery 200 of the battery device 300 includes a box shell 210 and a plurality of battery cells 220, and the plurality of battery cells 220 are installed in a rectangular array in the assembly space 213 of the box shell 210. Specifically, the box shell 210 includes a box body 211 and a box cover 212, and the box cover 212 covers the box body 211 to form an assembly space 213. First, the plurality of battery cells 220 are placed in the box body 211 in sequence to form an array arrangement, and then the plurality of battery cells 220 are assembled and connected by connecting the wiring harness using at least one of a series connection mode, a parallel connection mode, and a mixed connection mode, so that the assembled battery 200 meets the preset rated output voltage and rated output power. Then, the battery 200 is electrically connected to the high-voltage box 500 to form the battery device 300.

[0087] The manufactured battery device 300 can be applied to, but not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. to provide electric energy. Among them, electric toys can include, but are not limited to, fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Spacecraft can include, but are not limited to, airplanes, rockets, space shuttles, and spacecrafts.

[0088] According to a fourth aspect of the present application, a power-consuming device 400 is provided. The power-consuming device 400 includes a power load 410 and the aforementioned battery device 300 , wherein the battery device 300 is electrically connected to the power load 410 .

[0089] like Figure 5 As shown, in some embodiments of the present application, the power-consuming device 400 includes but is not limited to an electric vehicle. The battery device 300 provided by the embodiment of the present application is used to power the drive motor of the electric vehicle, and the drive motor is one of the power loads 410 on the electric vehicle, so that the electric vehicle can run normally. Specifically, the battery device 300 is mounted and fixed on the frame 420 of the electric vehicle, and the drive motor is mounted on the frame 420, and the drive motor and the battery device 300 are electrically connected by wiring on the frame 420, and other power loads of the electric vehicle are electrically connected to the battery device 300 by wiring, so that the battery 200 of the battery device 300 supplies power to the drive motor and other power loads on the electric vehicle.

[0090] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fuse structure, characterized in that: It comprises a plurality of fuse components arranged in parallel, wherein the first ends of the respective fuse components are electrically connected to form the input terminals of the fuse structure, the second ends of the respective fuse components are electrically connected to form the output terminals of the fuse structure, each of the fuse components comprises a fuse, and the internal resistance of each of the fuse components is equal.

2. The fuse structure according to claim 1, characterized in that: The plurality of fuse components include: A first fuse assembly, comprising a first fuse, a first connecting terminal and a second connecting terminal, wherein the first connecting terminal is electrically connected to an input terminal of the first fuse, and the second connecting terminal is electrically connected to an output terminal of the first fuse; A second fuse assembly, comprising a second fuse, a third connection terminal and a fourth connection terminal, wherein the third connection terminal is electrically connected to an input terminal of the second fuse, and the fourth connection terminal is electrically connected to an output terminal of the second fuse; The first connection terminal and the third connection terminal are electrically connected to form an input terminal of the fuse structure, and the second connection terminal and the fourth connection terminal are electrically connected to form an output terminal of the fuse structure.

3. The fuse structure according to claim 2, characterized in that: The internal resistance of the first fuse is equal to the internal resistance of the second fuse, the internal resistance of the first connection terminal is equal to the internal resistance of the third connection terminal, and the internal resistance of the second connection terminal is equal to the internal resistance of the fourth connection terminal.

4. The fuse structure according to claim 2 or 3, characterized in that: The first connecting terminal is fixedly welded to the input terminal of the first fuse; And / or, the second connecting terminal and the output terminal of the first fuse are fixed by welding; And / or, the third connecting terminal and the input terminal of the second fuse are fixed by welding; And / or, the fourth connecting terminal and the output terminal of the second fuse are fixed by welding.

5. The fuse structure according to claim 2 or 3, characterized in that: The first connecting terminal is connected to the input terminal of the first fuse by means of bolt connection, riveting connection or press riveting connection; And / or, the second connecting terminal and the output terminal of the first fuse are connected by bolt connection, riveting connection or press riveting connection; And / or, the third connection terminal and the input terminal of the second fuse are connected by bolt connection, riveting connection or press riveting connection; And / or, the fourth connecting terminal and the output terminal of the second fuse are connected by bolt connection, rivet connection or press riveting connection.

6. The fuse structure according to any one of claims 2 to 5, characterized in that: The first connecting terminal and the third connecting terminal are integrally formed into a first connecting bar, two ends of the first connecting bar are electrically connected to the input terminal of the first fuse and the input terminal of the second fuse respectively, and the input terminal of the fuse structure is provided on the first connecting bar.

7. The fuse structure according to claim 6, characterized in that: The first connecting bar sheet is a copper sheet or an aluminum sheet.

8. The fuse structure according to claim 6 or 7, characterized in that: The second connecting terminal and the fourth connecting terminal are integrally formed into a second connecting bar, two ends of the second connecting bar are electrically connected to the output terminal of the first fuse and the output terminal of the second fuse respectively, and the output terminal of the fuse structure is provided on the second connecting bar.

9. The fuse structure according to claim 8, characterized in that: The second connecting bar sheet is a copper sheet or an aluminum sheet.

10. The fuse structure according to claim 8 or 9, characterized in that: The thickness of the first connecting bar is equal to the thickness of the second connecting bar.

11. The fuse structure according to any one of claims 8 to 10, characterized in that: The fuse structure also includes a shell, which is provided with a accommodating space, a first mounting platform and a second mounting platform. The first fuse and the second fuse are arranged in the accommodating space, the input terminal of the first fuse, the input terminal of the second fuse and the first connecting bar are installed on the first mounting platform, and the output terminal of the first fuse, the output terminal of the second fuse and the second connecting bar are installed on the second mounting platform.

12. The fuse structure according to claim 11, characterized in that: The input terminal of the first fuse and one end of the first connecting bar are locked to the first mounting platform by bolts, the input terminal of the second fuse and the other end of the first connecting bar are locked to the first mounting platform by bolts, the output terminal of the first fuse and one end of the second connecting bar are locked to the second mounting platform by bolts, and the output terminal of the second fuse and the other end of the second connecting bar are locked to the second mounting platform by bolts.

13. The fuse structure according to claim 11 or 12, characterized in that: A portion from the input terminal of the fuse structure to one end of the first connecting bar and a portion from the input terminal of the fuse structure to the other end of the first connecting bar are symmetrically arranged relative to the input terminal of the fuse structure; And / or, the portion from the output terminal of the fuse structure to one end of the second connecting bar and the portion from the output terminal of the fuse structure to the other end of the second connecting bar are symmetrically arranged relative to the output terminal of the fuse structure.

14. A high voltage box, characterized in that: Comprising a fuse structure as described in any one of claims 1-13.

15. A battery device, characterized in that: It comprises a battery and the high voltage box as claimed in claim 14, wherein the high voltage box is electrically connected to the battery.

16. An electrical equipment, characterized in that: It comprises an electrical load and the battery device as claimed in claim 15, wherein the battery device is electrically connected to the electrical load.

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