Fuse assembly and convergence cabinet

Abstract

The utility model provides a fuse assembly and a convergence cabinet. The fuse assembly comprises a fusing unit, and the fusing unit comprises a fuse, a first connecting piece and a second connecting piece. The first connecting piece comprises a first part and a second part which are arranged at an included angle, the first part is detachably connected to the first end face of the fuse, and the second part extends in the direction, away from the first end face, of the first part; the second connecting piece comprises a third part and a fourth part which are arranged at an included angle, the third part is detachably connected to the second end face of the fuse, and the fourth part extends in the direction, away from the second end face, of the third part; the second part and the fourth part are arranged on different sides of the fuse. The first connecting piece and the second connecting piece are arranged on the two opposite end faces of the fuse respectively, and the second part and the fourth part are located on different sides of the fuse, so that mutual shielding of the first connecting piece and the second connecting piece can be avoided, and the fuse is convenient to install and maintain.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, specifically to fuse assemblies and combiner cabinets. Background Technology

[0002] With the continuous development of the energy storage industry, the capacity of energy storage systems is constantly increasing. Using multiple combiner cabinets in parallel can increase the capacity of energy storage systems. However, when multiple combiner cabinets are in parallel, if one combiner cabinet experiences a short circuit, the short circuit point will bear the current from the other combiner cabinets, resulting in a large current and potentially damaging the combiner cabinet.

[0003] In related technologies, by installing fuses inside the combiner cabinet, the combiner cabinet experiencing a short circuit fault can be disconnected from the energy storage system, protecting the safety of the combiner cabinet. However, the space in the combiner cabinet is limited, making it difficult to install and maintain the fuses.

[0004] Therefore, it is urgent to solve the above-mentioned technical problems. Utility Model Content

[0005] The embodiments of this application provide a fuse assembly and a combiner cabinet, which can improve the technical problem of limited space in the combiner cabinet and difficulty in installing and maintaining fuses.

[0006] In a first aspect, embodiments of this application provide a fuse assembly, the fuse assembly including a fusing unit, the fusing unit comprising:

[0007] A fuse having opposing first and second end faces;

[0008] The first connector includes a first part and a second part arranged at an angle, the first part being detachably connected to the first end face, and the second part extending along the direction of the first part away from the first end face.

[0009] The second connector includes a third part and a fourth part arranged at an angle, the third part being detachably connected to the second end face, and the fourth part extending along the direction of the third part away from the second end face;

[0010] The second part and the fourth part are located on different sides of the fuse.

[0011] In some embodiments, the angle between the first part and the second part is a right angle or an obtuse angle; and / or, the angle between the third part and the fourth part is a right angle or an obtuse angle.

[0012] In some embodiments, the second part and the fourth part are disposed on adjacent sides of the fuse.

[0013] In some embodiments, the third end face of the fuse is provided with a fuse indicator, and the third end face is connected to the first end face and the second end face;

[0014] The fourth part and the fuse indicator are located on the same side of the fuse.

[0015] In some embodiments, the fuse assembly includes two fuse elements, with the fuse indicators of the two fuse elements located on the same side of the fuse assembly; and the second portion of the two fuse elements located at an end of the two first portions that are far apart from each other.

[0016] In some embodiments, the distance between the centers of the two fuses is greater than or equal to 220 mm.

[0017] In some embodiments, both the first connector and the second connector are copper busbars.

[0018] In some embodiments, both the second part and the fourth part are provided with multiple screw holes.

[0019] Secondly, embodiments of this application provide a junction box, which includes an insulating plate and the aforementioned fuse assembly, wherein the third part is disposed between the fuse and the insulating plate, and the fourth part is disposed at the edge of the insulating plate.

[0020] In some embodiments, the third part is provided with a plurality of screw holes, and the insulating plate has an opening corresponding to the plurality of screw holes.

[0021] The beneficial effects of the embodiments of this application are as follows:

[0022] In the embodiments of this application, by respectively setting the first connector and the second connector on the opposite two end faces of the fuse, and the second part and the fourth part being located on different sides of the fuse, the first connector and the second connector can avoid blocking each other, thereby facilitating the installation and removal of the fuse, thus improving the technical problem of limited space in the combiner cabinet and difficulty in installing and maintaining the fuse. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0024] Figure 1 This is a perspective view of a fuse assembly provided in an embodiment of this application;

[0025] Figure 2This is a perspective view of another fuse assembly provided in an embodiment of this application;

[0026] Figure 3 yes Figure 2 A front view of the fuse assembly in the installed state;

[0027] Figure 4 yes Figure 2 A bottom view of the fuse assembly in its installed state;

[0028] Figure 5 yes Figure 2 Left view of the fuse assembly in the installed state;

[0029] Figure 6 This is a partially enlarged structural schematic diagram of the combiner cabinet provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] Fuse assembly 1;

[0032] Fuse unit 10;

[0033] Fuse 11, first end face 11a, second end face 11b, third end face 11c, fuse indicator 111;

[0034] First connector 12, first part 121, second part 122;

[0035] Second connector 13, third part 131, fourth part 132;

[0036] The center-to-center distance s1 between the two fuses 11;

[0037] Screw hole 14;

[0038] Combiner cabinet 2, insulation board 21, opening 211. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0040] Firstly, such as Figures 1 to 5 As shown, Figure 1 and Figure 2 A perspective view of two fuse assemblies provided in embodiments of this application is shown. Figures 3 to 5 It shows Figure 2 Multiple views of the fuse assembly in the installed state. Figure 3 Corresponding front view, Figure 4 Corresponding bottom view, Figure 5 Corresponding to the left view.

[0041] Embodiments of this application provide a fuse assembly 1, such as Figures 1 to 5 As shown, the fuse assembly 1 includes a fuse unit 10, which includes a fuse 11, a first connector 12, and a second connector 13. The fuse 11 has a first end face 11a and a second end face 11b facing each other. The first connector 12 includes a first part 121 and a second part 122 arranged at an angle. The first part 121 is detachably connected to the first end face 11a, and the second part 122 extends in a direction away from the first end face 11a along the first part 121. The second connector 13 includes a third part 131 and a fourth part 132 arranged at an angle. The third part 131 is detachably connected to the second end face 11b, and the fourth part 132 extends in a direction away from the third part 131 along the third part 131. The second part 122 and the fourth part 132 are located on different sides of the fuse 11.

[0042] The fuse assembly 1 can be used in energy storage devices such as combiner cabinet 2. When a large instantaneous current occurs in the circuit, the fuse 11 can be used to cut off the circuit to prevent damage to the equipment in the circuit caused by the continuous large current.

[0043] The fuse assembly 1 may include one or two fuse elements 10. For example... Figure 1 As shown, the fuse assembly 1 includes a fuse element 10. When the fuse assembly 1 includes a fuse element 10, the fuse element 10 can be used to break a circuit at one point. Figure 2 As shown, the fuse assembly 1 includes two fuse elements 10. When the fuse assembly 1 includes two fuse elements 10, the fuse elements 10 can be used to achieve two points of circuit breaking in the circuit, thereby improving the reliability of circuit breaking and enhancing the safety of the energy storage device. For example, the two fuse elements 10 can be respectively set to correspond to the positive and negative terminals of the power supply.

[0044] like Figures 1 to 3 As shown, the fuse 11 has a first end face 11a and a second end face 11b opposite to each other. For example, the first end face 11a can be the upper end of the fuse 11, and the second end face 11b can be the lower end face of the fuse 11. Both the first end face 11a and the second end face 11b are flat surfaces.

[0045] Both the first connector 12 and the second connector 13 are used to connect the fuse 11 to the circuit loop. Both the first connector 12 and the second connector are made of conductive material. Both the first connector 12 and the second connector 13 can be copper busbars, but are not limited to this.

[0046] The first connector 12 includes a first part 121 and a second part 122 arranged at an angle, and the first part 121 and the second part 122 can be formed by a bending process. The first connector 12 is plate-shaped, and the first part 121 and the second part 122 have a uniform thickness.

[0047] For ease of description, the two surfaces of the first part 121 that are opposite each other in the thickness direction are referred to as the large end faces of the first part 121, and the two surfaces of the second part 122 that are opposite each other in the thickness direction are referred to as the large end faces of the second part 122. The first part 121 and the second part 122 are set at an angle, meaning that the large end faces of the first part 121 and the large end faces of the second part 122 are not parallel.

[0048] Similarly, the two surfaces of the third part 131 that are opposite each other in the thickness direction are referred to as the large end faces of the third part 131, and the two surfaces of the fourth part 132 that are opposite each other in the thickness direction are referred to as the large end faces of the fourth part 132. The fact that the third part 131 and the fourth part 132 are set at an angle means that the large end faces of the third part 131 and the large end faces of the fourth part 132 are not parallel.

[0049] like Figures 1 to 3 As shown, the large end face of the first part 121 is a flat surface. The first part 121 is detachably connected to the first end face 11a. The detachable connection includes threaded connection, etc. For example, multiple screw holes 14 can be provided on the first part 121, and multiple screw holes 14 can be correspondingly provided on the first end face 11a. The first part 121 and the first end face 11a are connected by screws, bolts, etc.

[0050] like Figure 1 and Figure 2 As shown, the large end face of the third part 131 is a flat surface. The third part 131 is detachably connected to the second end face 11b. The detachable connection includes threaded connections, etc. Multiple screw holes 14 can be provided on the third part 131, and multiple screw holes 14 can be correspondingly provided on the second end face 11b. The third part 131 and the second end face 11b are connected by screws, bolts, etc.

[0051] like Figures 1 to 3As shown, the second part 122 extends along the direction away from the first end face 11a of the first part 121, meaning that the second part 122 is located on the side of the first part 121 away from the fuse 11. The fourth part 132 extends along the direction away from the second end face 11b of the third part 131, meaning that the fourth part 132 is located on the side of the third part 131 away from the fuse 11. For example, when the first end face 11a is a horizontal plane, the second part 122 can extend upwards towards the fuse 11, and the fourth part 132 can extend downwards towards the fuse 11. By extending the second part 122 and the fourth part 132 in opposite directions, sufficient space can be reserved for the second part 122 and the fourth part 132, facilitating the installation and maintenance of the fuse assembly 1.

[0052] like Figures 1 to 3 As shown, the second part 122 and the fourth part 132 are located on different sides of the fuse 11. When the first end face 11a is horizontal, the fuse 11 has four sides: front, back, left, and right. The second part 122 and the fourth part 132 being located on different sides of the fuse 11 means that when the fourth part 132 is located on the front side of the fuse 11, the second part 122 can be located on the left, right, or rear side of the fuse 11; the second part 122 and the fourth part 132 are not simultaneously located on the front side of the fuse 11. The same applies when the fourth part 132 is located on other sides of the fuse 11; simply ensure that the second part 122 and the fourth part 132 are not on the same side of the fuse 11. This arrangement allows the second part 122 and the fourth part 132 to be staggered, thereby increasing the disassembly space for the first connector 12 and the second connector 13, facilitating the installation and maintenance of the fuse 11.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the angle between the first part 121 and the second part 122 is a right angle or an obtuse angle; and / or, the angle between the third part 131 and the fourth part 132 is a right angle or an obtuse angle.

[0054] The angle between the first part 121 and the second part 122 being a right angle or an obtuse angle means that the angle between the large end face of the first part 121 and the large end face of the second part 122 is greater than or equal to 90 degrees and less than 180 degrees. The angle between the third part 131 and the fourth part 132 being a right angle or an obtuse angle means that the angle between the large end face of the third part 131 and the large end face of the fourth part 132 is greater than or equal to 90 degrees and less than 180 degrees.

[0055] Optionally, in some embodiments, the included angle between the first part 121 and the second part 122 is a right angle, and the included angle between the third part 131 and the fourth part 132 is an obtuse angle.

[0056] Optionally, in some embodiments, the included angle between the first part 121 and the second part 122 is an obtuse angle, and the included angle between the third part 131 and the fourth part 132 is a right angle.

[0057] Optionally, in some embodiments, the angle between the first part 121 and the second part 122 is a right angle, and the angle between the third part 131 and the fourth part 132 is a right angle.

[0058] It should be noted that due to machining errors, the actual angle of a right angle may deviate slightly from 90 degrees. For example, the actual machined right angle may be slightly less than 90 degrees, such as 85 degrees, 86 degrees, 87 degrees, 88 degrees, 89 degrees, etc. Similarly, the actual machined right angle may be slightly greater than 90 degrees, such as 91 degrees, 92 degrees, 93 degrees, 94 degrees, 95 degrees, etc. Here, "right angle" refers to a right angle within the allowable tolerance range.

[0059] Optionally, the angle between the large end face of the first part 121 and the large end face of the second part 122 is 85 degrees to 95 degrees, and the angle between the large end face of the third part 131 and the large end face of the fourth part 132 is 85 degrees to 95 degrees, thereby reducing the area occupied by the second part 122 and the fourth part 132 on the plane parallel to the first end face 11a, making the structure of the fuse unit 10 compact.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the second part 122 and the fourth part 132 are disposed on adjacent sides of the fuse 11. Adjacent sides refer to two adjacent directions. For example, the front side is adjacent to the left side, and the front side is adjacent to the right side. The front side and the rear side are not adjacent.

[0061] Optionally, the fourth part 132 is disposed on the front side of the fuse 11, and the second part 122 is disposed on the left or right side of the fuse 11.

[0062] In some embodiments, such as Figure 1 and Figure 2 As shown, the third end face 11c of the fuse 11 is provided with a fuse indicator 111, and the third end face 11c is connected to the first end face 11a and the second end face 11b; wherein, the fourth part 132 and the fuse indicator 111 are disposed on the same side of the fuse 11.

[0063] like Figures 1 to 3 As shown, the third end face 11c connects the first end face 11a and the second end face 11b. For example, when the first end face 11a is a horizontal plane, the third end face 11c can be a side face.

[0064] The main function of the fuse indicator 111 is to display the fuse-broken state of the fuse 11. When the fusible element in the fuse 11 melts, the fuse indicator 111 will react immediately. For example, the fuse-broken state can be indicated by a color change or a physical change, allowing personnel to visually identify whether the fuse 11 has melted.

[0065] To facilitate observation of the fuse indicator 111, the fuse indicator 111 and the fourth part 132 can be positioned on the same side. For example, when the fuse 11 is assembled and installed in the combiner cabinet 2, the fuse indicator 11 can face the front of the combiner cabinet 2. The front of the combiner cabinet 2 can face the cabinet door of the combiner cabinet 2, or the front of the combiner cabinet 2 can face outwards, and the front of the combiner cabinet 2 is not obstructed by other components.

[0066] In some embodiments, such as Figure 2 As shown, the fuse assembly 1 includes two fuse elements 10, and the fuse indicators 111 of the two fuse elements 10 are located on the same side of the fuse assembly 1; the second part 122 of the two fuse elements 10 is located at the end of the two first parts 121 that are far away from each other.

[0067] One of the two fuse units 10 can be connected to the positive terminal of the energy storage device, and the other can be connected to the negative terminal of the energy storage device, thereby providing more reliable protection for the energy storage device and improving its safety. For example, the first connector 12 of one fuse unit 10 can be a positive terminal inlet copper busbar, and the second connector 13 can be a positive terminal outlet copper busbar. The first connector 12 of the other fuse unit 10 can be a negative terminal inlet copper busbar, and the second connector 13 can be a negative terminal outlet copper busbar.

[0068] In some embodiments, such as Figure 2 As shown, the fuse indicators 111 of the two fuse units 10 are located on the same side of the fuse assembly 1, so as to facilitate simultaneous observation and identification of whether the fuse 11 has blown.

[0069] In some embodiments, such as Figure 2 As shown, the second part 122 of the two fuse units 10 is located at the ends of the two first parts 121 that are far apart from each other. For example, in one first connector 12, the second part 122 is located to the left of the first part 121; in the other first connector 12, the second part 122 is located to the right of the first part 121. With the above arrangement, the distance between the two second parts 122 can be increased, the disassembly space of the two first connectors 12 can be increased, and the installation and maintenance of the fuse assembly 1 can be facilitated.

[0070] In some embodiments, such as Figure 3 As shown, when the two fuses 11 are installed in the energy storage device, the center-to-center distance s1 between the two fuses 11 is greater than or equal to 220 mm. This arrangement provides sufficient space for installation and maintenance, facilitating personnel operation.

[0071] In some embodiments, both the first connector 12 and the second connector 13 are copper busbars. The thickness of the copper busbar can be set as needed; for example, the thickness of the copper busbar can be 10 mm. The width of the copper busbar can be 120 mm. The width of the copper busbar refers to the dimension of the copper busbar in the direction parallel to the boundary line between the first part 121 and the second part 122.

[0072] In some embodiments, such as Figure 1 and Figure 2 As shown, both the second part 122 and the fourth part 132 are provided with multiple screw holes 14. The second part 122 can be screwed to other components, and the fourth part 132 can be screwed to other components. Through the above arrangement, the second part 122 and the fourth part 132 can adopt the same connection method, which facilitates the use of the same tool to install and maintain the first connector 12 and the second connector 13, reducing the difficulty of installation and maintenance.

[0073] Similarly, as Figures 2 to 5 As shown, the first part 121, the second part 122, the third part 131, and the fourth part 132 can all be screwed together, so that the same tool can be used to install and maintain the fuse assembly 1, reducing the difficulty of installation and maintenance.

[0074] Secondly, such as Figure 6 As shown, an embodiment of this application provides a combiner cabinet 2, which includes an insulating plate 21 and the aforementioned fuse assembly 1. A third part 131 is disposed between the fuse 11 and the insulating plate 21, and a fourth part 132 is disposed at the edge of the insulating plate 21.

[0075] The combiner cabinet 2 is equipped with multiple insulating plates 21, which are used to house various components. Figure 6 Only one insulating plate 21 is shown to illustrate the mounting method of the fuse assembly 1. The fuse assembly 1 can be mounted on an insulating plate 21. The thickness of the insulating plate 21 can be set as needed so that the insulating plate 21 can support the fuse assembly 1. For example, the thickness of the insulating plate 21 can be greater than or equal to 10 mm.

[0076] like Figures 3 to 6 As shown, the third part 131 is disposed between the fuse 11 and the insulating plate 21, and the large end face of the third part 131 can be close to the bearing surface of the insulating plate 21. The third part 131 can be screwed to the insulating plate 21 to fix the fuse assembly 1.

[0077] like Figures 3 to 6 As shown, the fourth part 132 is disposed at the edge of the insulating plate 21. The fourth part 132 extends out of the insulating plate 21 and extends downward along the thickness direction of the insulating plate 21. Since the fourth part 132 is suspended, the operating space for disassembling the fourth part 132 from other components can be increased.

[0078] In some embodiments, combined with Figure 4 and Figure 6 The third part 131 is provided with multiple screw holes 14, and the insulating plate 21 has an opening 211 corresponding to the multiple screw holes 14. The opening 211 exposes the multiple screw holes 14, which facilitates the removal or installation of the fuse 11 and the third part 131 through the opening 211. At the same time, the opening 211 can also facilitate the heat dissipation of the second connector 13 and the fuse 11.

[0079] The size of the opening 211 can be greater than or equal to 95 mm, but is not limited to this.

[0080] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A fuse assembly (1), characterized in that, Includes a fuse unit (10), said fuse unit (10) comprising: The fuse (11) has a first end face (11a) and a second end face (11b) opposite each other; The first connector (12) includes a first part (121) and a second part (122) arranged at an angle. The first part (121) is detachably connected to the first end face (11a), and the second part (122) extends in a direction away from the first end face (11a) from the first part (121). The second connector (13) includes a third part (131) and a fourth part (132) arranged at an angle. The third part (131) is detachably connected to the second end face (11b), and the fourth part (132) extends in a direction away from the second end face (11b) from the third part (131). The second part (122) and the fourth part (132) are located on different sides of the fuse (11).

2. The fuse assembly (1) according to claim 1, characterized in that, The angle between the first part (121) and the second part (122) is a right angle or an obtuse angle; and / or, the angle between the third part (131) and the fourth part (132) is a right angle or an obtuse angle.

3. The fuse assembly (1) according to claim 1, characterized in that, The second part (122) and the fourth part (132) are disposed on adjacent sides of the fuse (11).

4. The fuse assembly (1) according to claim 3, characterized in that, The fuse (11) has a fuse indicator (111) on its third end face (11c), and the third end face (11c) is connected to the first end face (11a) and the second end face (11b). The fourth part (132) and the fuse indicator (111) are located on the same side of the fuse (11).

5. The fuse assembly (1) according to claim 4, characterized in that, The fuse assembly (1) includes two fuse units (10), the fuse indicators (111) of the two fuse units (10) are located on the same side of the fuse assembly (1); the second part (122) of the two fuse units (10) is located at the end of the two first parts (121) that are far away from each other.

6. The fuse assembly (1) according to any one of claims 1 to 5, characterized in that, The distance between the centers of the two fuses (11) is greater than or equal to 220 mm.

7. The fuse assembly (1) according to claim 6, characterized in that, Both the first connector (12) and the second connector (13) are copper busbars.

8. The fuse assembly (1) according to claim 6, characterized in that, Both the second part (122) and the fourth part (132) are provided with multiple screw holes (14).

9. A combiner cabinet (2), characterized in that, Includes an insulating plate (21) and a fuse assembly (1) as claimed in any one of claims 1 to 8, wherein the third part (131) is disposed between the fuse (11) and the insulating plate (21), and the fourth part (132) is disposed at the edge of the insulating plate (21).

10. The combiner cabinet (2) according to claim 9, characterized in that, The third part (131) is provided with a plurality of screw holes (14), and the insulating plate (21) is provided with an opening (211) corresponding to the plurality of screw holes (14).

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