Parallel type high-voltage heat dissipation fuse

Abstract

The utility model relates to the technical field of fuses, and particularly discloses a parallel type high-voltage heat dissipation fuse which comprises two conductive connecting plates which are arranged oppositely. At least two porcelain tubes, wherein each porcelain tube is located between the two conductive connecting plates; the plurality of melts are arranged in one-to-one correspondence with the porcelain tubes, the melts are located in the corresponding porcelain tubes, and the two ends of each melt are electrically connected to one conductive connecting plate respectively; and the heat dissipation assembly is attached to the outer part of each porcelain tube. The parallel type high-voltage heat dissipation fuse provided by the utility model can effectively solve the problems that the existing fuse is insufficient in large-current breaking capacity and easy to derate at high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses, in particular to a parallel high-voltage heat dissipation fuse. Background Art

[0002] In the field of energy storage device component protection, fuses are key overcurrent protection devices. Their core function is to quickly cut off the current when a circuit is overloaded or short-circuited, thereby protecting the circuit and its connected devices from damage. However, with the continuous expansion of energy storage system scale and the increase in voltage levels, existing traditional fuses have exposed some technical problems when dealing with high current loads.

[0003] First, traditional fuses often have insufficient capacity to interrupt high currents. When the current in the energy storage system exceeds the rated breaking capacity of the fuse, the fuse may not be able to effectively and promptly disconnect the circuit, causing damage to the energy storage equipment or even more serious safety accidents. This insufficient capacity limits the use of fuses in large-scale energy storage systems, as these systems generally require higher breaking capacity to ensure safe operation of the equipment.

[0004] Secondly, derating due to excessive fuse temperatures is a common problem. During continuous operation or when interrupting high currents, the fuse's temperature rises significantly due to heat generated by resistance and heat accumulation during arc extinguishing. This high temperature not only affects the fuse's physical properties, reducing its mechanical strength and conductivity, but also reduces its rated capacity, a phenomenon known as "derating." Derating shortens the fuse's service life, increases maintenance costs, and can lead to sudden failure during use, thereby losing its protective function.

[0005] Therefore, it is necessary to improve the existing fuses to solve the problems of insufficient large current breaking capacity and easy high temperature derating.

[0006] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0007] One purpose of the utility model is to provide a parallel high-voltage heat dissipation fuse, which can effectively solve the problems of insufficient high-current breaking capacity and easy high-temperature derating of existing fuses.

[0008] To achieve the above objectives, the present invention provides a parallel high-voltage heat dissipation fuse, comprising:

[0009] Two conductive connecting plates arranged opposite to each other;

[0010] at least two porcelain tubes, each of which is located between the two conductive connecting plates;

[0011] A plurality of melts are provided corresponding to each of the porcelain tubes, the melts are located in the corresponding porcelain tubes, and both ends of the melts are electrically connected to one of the conductive connecting plates;

[0012] The heat dissipation component is arranged on the outside of each of the porcelain tubes.

[0013] Optionally, the heat dissipation assembly includes a first heat dissipation member fitted on the upper portion of each of the porcelain tubes, a second heat dissipation member fitted on the lower portion of each of the porcelain tubes, and a heat dissipation locking bolt for fastening the two heat dissipation members.

[0014] Optionally, both of the heat sinks are provided with a plurality of U-shaped portions corresponding to the porcelain tubes, and two adjacent U-shaped portions are connected via a transverse connecting portion.

[0015] Optionally, each of the U-shaped portions is provided with a heat dissipation fin.

[0016] Optionally, each of the heat dissipation locking bolts is installed at the position where each of the transverse connecting parts is located.

[0017] Optionally, the number of the U-shaped parts is three.

[0018] Optionally, the U-shaped portion in the middle is installed with an insulating base, and the insulating base is provided with a fastening mounting hole.

[0019] Optionally, the U-shaped portion at the middle position is provided with a receiving groove for accommodating the insulating base.

[0020] Optionally, the conductive connecting plate is fastened to the end face of each of the porcelain tubes through connecting plate fixing bolts.

[0021] Optionally, an arc extinguishing medium is provided on the inner wall of the porcelain tube.

[0022] The beneficial effects of the present utility model are: providing a parallel high-voltage heat dissipation fuse, on the one hand, multiple fuses are connected in parallel between two conductive connecting plates, and each fuse only needs to bear part of the current. In this way, when interrupting a large current, the overall fuse can more effectively cut off the current, solving the problem of insufficient capacity of traditional fuses in interrupting large currents; on the other hand, a porcelain tube is used as a carrier of the melt, and a heat dissipation component is provided to effectively and quickly conduct the heat generated by the melt, thereby reducing the overall temperature of the fuse. By optimizing the heat dissipation performance, the overheating problem caused by long-term operation or interrupting large currents of the fuse can be prevented, thereby reducing the temperature rise of the fuse when interrupting large currents, which helps to prevent the fuse from being derated due to high temperature.

[0023] Therefore, the parallel high-voltage heat dissipation fuse provided by the present invention can effectively solve the problems of insufficient high-current breaking capacity and easy derating at high temperatures of existing fuses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a parallel high-voltage heat dissipation fuse provided in an embodiment;

[0026] Figure 2 Schematic diagram of an explosion of a parallel high-voltage heat dissipation fuse provided in an embodiment.

[0027] In the picture:

[0028] 1. Conductive connecting plate;

[0029] 2. Porcelain tube;

[0030] 3. Melt;

[0031] 4a, first heat dissipation element; 4b, second heat dissipation element; 401, U-shaped portion; 4011, accommodating groove; 402, horizontal connecting portion;

[0032] 5. Connecting plate fixing bolts;

[0033] 6. Heat dissipation locking bolt;

[0034] 7. Insulation base; 701. Fastening mounting hole;

[0035] 8. Arc extinguishing medium. DETAILED DESCRIPTION

[0036] References to "embodiments" in this utility model mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the utility model. The appearance of the term "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or relevance to other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the various embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0037] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0038] In the description of this utility model, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0039] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0040] Without further restrictions, in the present invention, the words "include", "comprise", "have" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0041] Consistent with the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple," such as "multiple groups" and "multiple times," are also understood in this manner, unless otherwise specifically defined.

[0042] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present invention.

[0043] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication 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 those skilled in the technical field of the present invention, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0044] The utility model provides a parallel high-voltage heat dissipation fuse, which is suitable for high-voltage power systems and industrial power applications requiring high reliability and high-current protection, and can effectively solve the problems of insufficient high-current breaking capacity and easy high-temperature derating of existing fuses.

[0045] See also Figure 1 and Figure 2 The parallel high-voltage heat dissipation fuse provided in this embodiment includes two oppositely arranged conductive connecting plates 1, at least two porcelain tubes 2, a plurality of fuses 3 arranged in one-to-one correspondence with each of the porcelain tubes 2, and a heat dissipation component.

[0046] Each porcelain tube 2 is positioned between two conductive connecting plates 1. Optionally, the conductive connecting plates 1 are secured to the end faces of each porcelain tube 2 via connecting plate fixing bolts 5 for easy assembly and disassembly. The melt 3 is positioned within the corresponding porcelain tube 2, with each end of the melt 3 electrically connected to a conductive connecting plate 1. The heat dissipation assembly is fitted onto the exterior of each porcelain tube 2.

[0047] The parallel high-voltage heat dissipation fuse provided by the present invention, on the one hand, connects a plurality of fuses 3 in parallel between two conductive connecting plates 1, and each fuse 3 only needs to bear part of the current. In this way, when interrupting a large current, the overall fuse can more effectively cut off the current, solving the problem of insufficient capacity of traditional fuses in interrupting large currents; on the other hand, a porcelain tube 2 is used as a carrier of the fuse 3, and a heat dissipation component is provided to effectively and quickly conduct the heat generated by the melt 3, thereby reducing the overall temperature of the fuse. By optimizing the heat dissipation performance, the overheating problem caused by long-term operation or interrupting a large current can be prevented, thereby reducing the temperature rise of the fuse when interrupting a large current, which helps to prevent the fuse from being derated due to high temperature.

[0048] Therefore, the parallel high-voltage heat dissipation fuse provided by the present invention can effectively solve the problems of insufficient high-current breaking capacity and easy derating at high temperatures of existing fuses.

[0049] The heat dissipation assembly includes a first heat dissipation member 4a attached to the upper portion of each of the porcelain tubes 2, a second heat dissipation member 4b attached to the lower portion of each of the porcelain tubes 2, and a heat dissipation locking bolt 6 for fastening the two heat dissipation members.

[0050] Both heat sinks are provided with a plurality of U-shaped portions 401 corresponding to the porcelain tubes 2, and adjacent U-shaped portions 401 are connected by a cross-connection 402. Each U-shaped portion 401 is provided with a heat dissipation fin; and each heat dissipation locking bolt 6 is installed at the position where each cross-connection 402 is located.

[0051] The heat dissipation fins are arranged on the U-shaped portion 401 to enhance the heat dissipation performance. The cross-connecting portion 402 connects each of the U-shaped portions 401. On the one hand, it makes the entire heat dissipation component a whole, which is convenient for assembly. On the other hand, it provides an installation position for the heat dissipation locking bolt 6, reduces the impact of the heat dissipation locking bolt 6 on the heat dissipation fins, and thus ensures the heat dissipation performance.

[0052] In this embodiment, there are three U-shaped portions 401. The middle U-shaped portion 401 has a receiving groove 4011. An insulating base 7 is mounted in the receiving groove 4011. The insulating base 7 has fastening holes 701. Fastening bolts are inserted through the fastening holes 701 to secure the parallel high-voltage heat dissipating fuse to a desired location (e.g., on an operating device or installation station).

[0053] Of course, in some other embodiments, the number of the U-shaped portions 401 may be two, four, five or even more, and the present invention is not limited thereto.

[0054] In this embodiment, an arc extinguishing medium 8 is provided on the inner wall of the porcelain tube 2 .

[0055] Optionally, arc-extinguishing medium 8 functions to rapidly cool and isolate the arc when the fuse interrupts the circuit, preventing it from continuing to burn, thereby protecting the circuit and the fuse itself. Specifically, arc-extinguishing medium 8 can be a variety of materials, such as sulfur hexafluoride (SF6) or a mixture of SF6 and nitrogen. The choice of arc-extinguishing medium 8 depends on the specific application requirements, including voltage level, circuit-breaking capacity, environmental conditions, cost, and environmental protection requirements. These factors can be comprehensively considered when designing and selecting arc-extinguishing medium 8 to achieve optimal arc extinguishing effect.

[0056] The parallel high-voltage heat dissipation fuse provided in this embodiment has the following advantages:

[0057] ① Parallel structure design: By connecting multiple fuses 3 in parallel between two conductive connecting plates 1, each fuse 3 only needs to bear part of the current, significantly improving the efficiency and reliability of the overall fuse when breaking high currents, and effectively solving the problem of insufficient capacity of traditional fuses when handling high current loads;

[0058] Optimized heat dissipation: The heat dissipation assembly, including the first heat sink 4a, the second heat sink 4b, and the heat sink locking bolt 6, effectively and quickly conducts heat generated by the fuse element 3, reducing the overall temperature of the fuse. The heat dissipation fin design further enhances heat dissipation, preventing overheating caused by prolonged operation or when interrupting high currents. This reduces the temperature rise of the fuse during high current interruption, helping to prevent fuse derating due to high temperatures.

[0059] ③ Compact Structure, Easy Installation: The design of U-shaped portion 401 and the provision of insulating base 7 provide a strong integrity to the heat dissipation assembly, facilitating assembly. Furthermore, the provision of fastening mounting holes 701 allows the parallel high-voltage heat dissipation fuse to be conveniently fixed in place with fastening bolts, improving installation efficiency and device stability.

[0060] To sum up, the parallel high-voltage heat dissipation fuse provided by the utility model has significant advantages in improving large current breaking capacity, optimizing heat dissipation performance, ensuring arc extinguishing effect, and facilitating installation and maintenance. It effectively solves the problems existing in the existing technology and has high practical value and market prospects.

[0061] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A parallel high-voltage heat dissipation fuse, characterized in that: include: Two conductive connecting plates (1) arranged opposite to each other; At least two porcelain tubes (2), each of the porcelain tubes (2) being located between the two conductive connecting plates (1); A plurality of melts (3) are arranged in one-to-one correspondence with each of the porcelain tubes (2), wherein the melts (3) are located in the corresponding porcelain tubes (2), and both ends of the melts (3) are electrically connected to one of the conductive connecting plates (1); A heat dissipation component is arranged on the outside of each of the porcelain tubes (2).

2. The parallel high-voltage heat dissipation fuse according to claim 1, characterized in that: The heat dissipation assembly comprises a first heat dissipation member (4a) fitted on the upper portion of each porcelain tube (2), a second heat dissipation member (4b) fitted on the lower portion of each porcelain tube (2), and a heat dissipation locking bolt (6) for fastening and connecting the two heat dissipation members.

3. The parallel high-voltage heat dissipation fuse according to claim 2, characterized in that: Both heat sinks are provided with a plurality of U-shaped portions (401) arranged in one-to-one correspondence with the porcelain tubes (2), and two adjacent U-shaped portions (401) are connected via a transverse connecting portion (402).

4. The parallel high-voltage heat dissipation fuse according to claim 3, characterized in that: Each of the U-shaped portions (401) is provided with a heat dissipation fin.

5. The parallel high-voltage heat dissipation fuse according to claim 4, characterized in that: Each of the heat dissipation locking bolts (6) is installed at the location of each of the transverse connecting portions (402).

6. The parallel high-voltage heat dissipation fuse according to claim 3, characterized in that: The number of the U-shaped portions (401) is three.

7. The parallel high-voltage heat dissipation fuse according to claim 6, characterized in that: The U-shaped portion (401) at the middle position is installed with an insulating base (7), and the insulating base (7) is provided with a fastening installation hole (701).

8. The parallel high-voltage heat dissipation fuse according to claim 7, characterized in that: The U-shaped portion (401) at the middle position is provided with an accommodating groove (4011) for accommodating the insulating base (7).

9. The parallel high-voltage heat dissipation fuse according to claim 1, characterized in that: The conductive connecting plate (1) is fastened to the end surface of each of the porcelain tubes (2) via connecting plate fixing bolts (5).

10. The parallel high-voltage heat dissipation fuse according to claim 1, characterized in that: An arc extinguishing medium (8) is provided on the inner wall of the porcelain tube (2).

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