Pulse-resistant melt and fuse

Abstract

The utility model belongs to the technical field of melts, and particularly relates to a pulse-resistant melt and a fuse, the pulse-resistant melt comprises a fuse piece, the surface of the fuse piece is provided with at least one row hole, one side of the fuse piece is provided with a first support, and the first support is used for supporting the fuse piece. According to the utility model, through arranging the first support, the fuse piece can be supported, and the fuse piece is prevented from being deformed excessively when encountering mechanical impact or pulse impact.

Description

Technical Field

[0001] The utility model belongs to the technical field of melts, and particularly relates to a pulse-resistant melt and a fuse. Background Art

[0002] With the increasing global emphasis on environmental protection, the development of new energy vehicles has become increasingly rapid. However, during the use of new energy vehicles, there will be a situation where the current fluctuates back and forth during the charging and discharging process of the battery system, and the battery system will be subjected to pulse shocks. When an electric vehicle is driving at high speed, braking suddenly or colliding, the fuse will be subjected to a strong mechanical shock, which may affect the safety and stability of the battery system. Therefore, in order to protect the battery system of new energy vehicles, fuses that can withstand pulse shocks and mechanical shocks are required. In addition, with the development of fast charging technology, the demand for super-fast charging piles is also increasing continuously, which also puts forward higher requirements for the performance of fuses.

[0003] Solutions of the prior art: The existing solutions mainly improve the design and materials of the fuse to enhance its ability to resist pulse shocks and mechanical shocks. For example, some fuses are made of special alloy materials to enhance their toughness and shock resistance. In addition, some fuses adopt special structural designs to improve their shock resistance and breaking capacity.

[0004] Problems of the prior art: Although the existing fuses have improved the ability to resist pulse shocks and mechanical shocks to a certain extent, there are still some problems and disadvantages in actual applications. First of all, the performance of the existing fuses in terms of resisting pulse shocks and mechanical shocks still needs to be improved and cannot meet the breaking requirements of higher voltages and larger currents. Secondly, while meeting the performance of resisting pulse shocks and mechanical shocks, the existing fuses may sacrifice their electrical performance, such as breaking capacity, temperature rise, etc. In addition, there are also certain problems with the existing fuses in terms of manufacturing cost and production efficiency.

[0005] Therefore, there is an urgent need to propose a new technical solution to solve the above problems. Summary of the Utility Model

[0006] One of the purposes of the utility model is to: aiming at the deficiencies of the prior art, provide a pulse-resistant melt, which can prevent the fuse piece from deforming too much when encountering mechanical shocks or pulse shocks, can also meet the breaking requirements of higher voltages and larger currents, will not sacrifice electrical performance, and has a lower structural complexity, which can reduce manufacturing costs and improve production efficiency.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A pulse-resistant melt includes a fuse link. At least one discharge hole is provided on the surface of the fuse link. A first bracket is installed on one side of the fuse link, and the first bracket is used to support the fuse link.

[0009] Preferably, a second bracket is installed on the other side of the fuse link, and the second bracket is used to support the fuse link.

[0010] Preferably, the side of the first bracket facing away from the fuse link is an arc structure or a square structure, and the side of the second bracket facing away from the fuse link is an arc structure or a square structure.

[0011] Preferably, the first bracket and the second bracket are symmetrically arranged along the central axis of the fuse link.

[0012] Preferably, the fuse link is provided with a bent portion, and the bent portion is arranged between two adjacent discharge holes.

[0013] Preferably, a narrow diameter is provided between adjacent holes of the discharge hole.

[0014] Preferably, the distance between adjacent discharge holes is 8 mm to 10 mm.

[0015] Preferably, a first groove is provided on the side of the first bracket, and one side of the fuse link is embedded in the first groove.

[0016] Preferably, a second groove is provided on the side of the second bracket, and the other side of the fuse link is embedded in the second groove.

[0017] Preferably, the bent portion is V-shaped.

[0018] Preferably, a first connection portion is provided at one end of the fuse link, and a second connection portion is provided at the other end of the fuse link.

[0019] The second object of the present utility model is to provide a fuse, including the pulse-resistant melt as described above.

[0020] The beneficial effects of the present utility model are as follows: The present utility model includes a fuse piece, the fuse piece is made of silver and will melt when the current is abnormal, thereby ensuring the safety of the circuit. The surface of the fuse piece has at least one discharge hole. By setting the discharge hole, the fuse piece can meet the breaking requirement of 50 kA @ 1000 Vdc. A first bracket is installed on one side of the fuse piece, and the first bracket is used to support the fuse piece. The first bracket is made of a high-strength and high-temperature-resistant insulating material. The shape of the first bracket corresponds to the shape of the fuse piece and is fixedly installed on one side of the fuse piece, so that when the fuse piece bears pulse impact and mechanical impact, it can maintain good stability and reliability and will not undergo excessive deformation or damage. By setting the first bracket, it can play a supporting role for the fuse piece to prevent the fuse piece from deforming too much when encountering mechanical impact or pulse impact. By setting the discharge hole, it meets the breaking requirements of higher voltage and larger current, and does not sacrifice electrical performance, and the structural complexity is relatively low, which can reduce the manufacturing cost and improve the production efficiency. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0022] Wherein: 1. Fuse piece; 11. First connection part; 12. Second connection part; 2. Discharge hole; 3. First bracket; 31. First groove; 4. Second bracket; 41. Second groove; 5. Bending part; 6. Narrow diameter. Detailed Embodiments

[0023] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". In the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", etc. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] The following combines the attached Figure 1 drawings and specific embodiments to further elaborate on the present utility model in detail, but it is not a limitation to the present utility model.

[0025] Embodiment 1

[0026] A pulse-resistant melt includes a fuse link 1 made of silver. When the current is abnormal, the fuse link 1 will melt, thus ensuring the safety of the circuit. The surface of the fuse link 1 has at least one discharge hole 2. By setting the discharge hole 2, the fuse link 1 can meet the breaking requirement of 50 kA @ 1000 Vdc. A first support 3 is installed on one side of the fuse link 1. The first support 3 is used to support the fuse link 1 and is made of a high-strength and high-temperature-resistant insulating material. The shape of the first support 3 corresponds to that of the fuse link 1 and is fixedly installed on one side of the fuse link 1, so that when the fuse link 1 is subjected to pulse shock and mechanical shock, it can maintain good stability and reliability and will not undergo excessive deformation or damage. By setting the first support 3, it can play a supporting role for the fuse link 1 to prevent the fuse link 1 from deforming too much when encountering mechanical shock or pulse shock. By setting the discharge hole 2, it meets the breaking requirements of higher voltage and larger current, and does not sacrifice electrical performance. Moreover, the structural complexity is relatively low, which can reduce the manufacturing cost and improve the production efficiency.

[0027] In this embodiment, a second support 4 is installed on the other side of the fuse link 1. The second support 4 is used to support the fuse link 1. The second support 4 is made of a high-strength and high-temperature-resistant insulating material. The shape of the second support 4 corresponds to that of the fuse link 1 and is fixedly installed on one side of the fuse link 1, so that when the fuse link 1 is subjected to pulse shock and mechanical shock, it can maintain good stability and reliability and will not undergo excessive deformation or damage. The first support 3 and the second support 4 are oppositely arranged on both sides of the fuse link 1, making the stability of the fuse link 1 higher and avoiding excessive deformation of the fuse link 1.

[0028] In this embodiment, the fuse link 1 is provided with a bending part 5, and the bending part 5 is arranged between two adjacent discharge holes 2. By setting the bending part 5, the fuse link 1 has a certain elasticity, thus having a higher ability to resist pulse shock and mechanical shock.

[0029] In this embodiment, a narrow diameter 6 is arranged between adjacent holes of the discharge hole 2. The length of the fuse link 1 needs to meet the voltage requirement of 1000 Vdc. The specific length setting can be designed according to the actual situation and is not specifically limited here. By designing the width of the narrow diameter 6 to meet the requirement of a current density of 50 kA, the specific width setting can be designed according to the actual situation and is not specifically limited here.

[0030] In this embodiment, the distance L between adjacent rows of holes 2 is 8 mm to 10 mm. For example, it can be 8 mm to 8.5 mm, 8.5 mm to 9 mm, 9 mm to 9.5 mm, or 9.5 mm to 10 mm. Preferably, L is 8.5 mm to 9.5 mm. By designing the pitch between the rows of holes 2, there are sufficient fracture surfaces to withstand the voltage after fusing, enabling the fuse piece 1 to withstand a DC voltage of 1000 V and a large current of 50 kA in a tube body less than 90 mm, and to break normally without catching fire or arcing.

[0031] In this embodiment, a first groove 31 is provided on the side of the first bracket 3, and one side of the fuse piece 1 is embedded in the first groove 31. The shape of the first groove 31 corresponds to the shape of the fuse piece 1, so that one side of the fuse piece 1 can be embedded in the first groove 31. The width of the first groove 31 and the thickness of the fuse piece 1 also correspond to each other, ensuring that the fuse piece 1 can convert electrical energy into mechanical energy without being unable to do so, and at the same time, not all of the electrical energy can be converted into mechanical energy to cause it to deform too much and lose its elasticity. By clamping the fuse piece 1 into the first groove 31, its excessive deformation can be prevented when a pulse appears.

[0032] In this embodiment, a second groove 41 is provided on the side of the second bracket 4, and the other side of the fuse piece 1 is embedded in the second groove 41. The shape of the second groove 41 corresponds to the shape of the fuse piece 1, so that the other side of the fuse piece 1 can be embedded in the second groove 41. The width of the second groove 41 and the thickness of the fuse piece 1 also correspond to each other, ensuring that the fuse piece 1 can convert electrical energy into mechanical energy without being unable to do so, and at the same time, not all of the electrical energy can be converted into mechanical energy to cause it to deform too much and lose its elasticity. By clamping the fuse piece 1 into the second groove 41, its excessive deformation can be prevented when a pulse appears.

[0033] In this embodiment, the bent portion 5 is V-shaped, adopting a V-shaped bending structure, so that the fuse piece 1 has higher anti-pulse impact and mechanical impact capabilities.

[0034] In this embodiment, a first connecting portion 11 is provided at one end of the fuse piece 1, and a second connecting portion 12 is provided at the other end of the fuse piece 1. The first connecting portion 11 is used to connect to other components, and the second connecting portion 12 is used to connect to other components. Both the first connecting portion 11 and the second connecting portion 12 are sheet-like structures, increasing the connection area between the fuse piece 1 and other components and facilitating the connection between the fuse piece 1 and other components.

[0035] The fuse 1 of the present invention can withstand the interruption of 1000Vdc voltage and 50kA current. Compared with the existing technology, its voltage resistance and interruption capacity have been significantly improved, which can better protect the battery system of new energy vehicles and meet the interruption requirements of higher voltage and larger current; the fuse 1 of the present invention takes into account the protection of pulse shock and mechanical shock in its design, and meets the requirements of UL248-20 standard. Compared with the existing technology, its performance of resisting pulse shock and mechanical shock has been significantly improved, which can better protect the battery system of new energy vehicles and improve its safety and stability; the fuse of the present invention not only meets the performance of resisting pulse shock and mechanical shock, but also takes into account the electrical performance, such as breaking capacity, temperature rise, etc. Compared with the existing technology, its electrical performance is better and can better meet the actual application needs.

[0036] Example 2

[0037] A fuse includes the pulse-resistant fuse described in Example 1. By using a high-strength, high-temperature-resistant insulating material to form a correspondingly shaped fuse housing to secure the fuse, the fuse can maintain good stability and reliability when subjected to pulse shock and mechanical shock without deformation or damage.

[0038] Obviously, the utility model includes a fuse, which can be silver and will melt when the current is abnormal, thereby ensuring the safety of the circuit. The surface of the fuse has at least one row of holes. By setting the row of holes, the fuse can meet the breaking requirements of 50kA@1000Vdc. A first bracket is installed on one side of the fuse. The first bracket is used to support the fuse. The first bracket is made of high-strength and high-temperature resistant insulating material. The shape of the first bracket corresponds to the shape of the fuse. It is fixedly installed on one side of the fuse, so that the fuse can maintain good stability and reliability when subjected to pulse impact and mechanical impact, and will not be excessively deformed or damaged. By setting the first bracket, it can play a supporting role for the fuse, preventing the fuse from excessively deforming when encountering mechanical impact or pulse impact. By setting the row of holes, the breaking requirements of higher voltage and larger current are met without sacrificing electrical performance. In addition, the structural complexity is relatively low, which can reduce manufacturing costs and improve production efficiency.

[0039] Based on the disclosure and teachings of the above description, those skilled in the art will be able to make changes and modifications to the above embodiments. Therefore, the utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present utility model fall within the scope of protection of the present utility model. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation on the present utility model.

Claims

1. A pulse-resistant melt, characterized in that, It includes a fuse piece (1), at least one row of holes (2) is provided on the surface of the fuse piece (1), and a first bracket (3) is installed on one side of the fuse piece (1), and the first bracket (3) is used to support the fuse piece (1).

2. The pulse-resistant melt according to claim 1, characterized in that, A second bracket (4) is installed on the other side of the fuse piece (1), and the second bracket (4) is used to support the fuse piece (1).

3. The pulse-resistant melt according to claim 1, characterized in that, The fuse piece (1) is provided with a bending part (5), and the bending part (5) is arranged between two adjacent rows of holes (2).

4. The pulse-resistant melt according to claim 1, characterized in that, A narrow diameter (6) is provided between adjacent holes of the row of holes (2).

5. The pulse-resistant melt according to claim 1, characterized in that, The distance between adjacent rows of holes (2) is 8 mm to 10 mm.

6. The pulse-resistant melt according to claim 1, characterized in that, A first groove (31) is provided on the side of the first bracket (3), and one side of the fuse piece (1) is embedded into the first groove (31).

7. The pulse-resistant melt according to claim 2, characterized in that, A second groove (41) is provided on the side of the second bracket (4), and the other side of the fuse piece (1) is embedded into the second groove (41).

8. The pulse-resistant melt according to claim 3, wherein The bending part (5) is V-shaped.

9. The pulse-resistant melt according to claim 1, characterized in that, One end of the fuse piece (1) is provided with a first connecting part (11), and the other end of the fuse piece (1) is provided with a second connecting part (12).

10. A fuse, characterized in that, It includes the pulse-resistant fuse as described in any one of claims 1 to 9.

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