Fuse

Abstract

The invention discloses a fuse which comprises a first section, a first connector, a second section, a second connector and a third section which are connected in sequence, and the first section, the second section and the third section are all horizontally arranged. The third section and the first section are in central symmetry, the first section comprises a plurality of first main bodies and second main bodies which are alternately connected, the first section further comprises a third main body, one end of the third main body is connected with one second main body, the other end of the third main body is connected with the first connecting body, and the third main body and the first main body are both narrower than the second main body; the center lines of the third main body, the first main bodies and the second main bodies coincide; the width of the second section is uniform, and the widths of the first connector and the second connector are greater than those of the first main body, the third main body and the second section. Compared with the prior art, the fuse processing device has the advantages that the change of line width is increased, the length of a single fine line is reduced, the deviation risk is reduced, meanwhile, the heat loss in the fusing process can be reduced, the quality of fuses after waste discharge can be guaranteed, and the effect of improving the yield of the fuses is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of fuses, and in particular relates to a fuse. Background Art

[0002] At present, with the rapid development of new energy vehicles, fuses are also used in new energy vehicle battery sampling boards. They play a very critical role in new energy vehicles. Fuses mainly play an overload protection role. If the fuse is correctly placed in the circuit, when the circuit is abnormal, the fuse will heat up and melt itself, cutting off the current and protecting the safe operation of the circuit.

[0003] At present, most fuses adopt a serpentine or straight line design with uniform line width. In actual production, etched fuses are easily pulled off-center or even broken when discharging waste after die-cutting due to the long single-segment thin line, thus causing the fuse to be scrapped. This is especially serious for serpentine fuses. During the die-cutting process, it is difficult to ensure the quality of the fuse.

[0004] Therefore, a new technology is needed to solve the problem that the fuse is easily damaged during the die-cutting process in the prior art. Summary of the invention

[0005] In order to solve the above problems in the prior art, the present invention provides a fuse, which has the effect of improving the yield of the fuse in the die-cutting process.

[0006] The present invention adopts the following technical solutions:

[0007] A fuse comprises a first section, a first connector, a second section, a second connector and a third section which are sequentially connected in a shape of a letter "H", wherein the first section, the second section and the third section are all arranged horizontally;

[0008] The third section is centrally symmetrically arranged with the first section, the first section includes a plurality of first bodies and second bodies connected alternately, the first section also includes a third body, one end of the third body is connected to one of the second bodies, and the other end is connected to the first connector, the widths of the third body and the first body are both smaller than the width of the second body, and the midline of the third body coincides with the midline of each of the first body and each of the second body;

[0009] The width of the second section is uniform, and the widths of the first connector and the second connector are both greater than the widths of the first main body, the third main body, and the second section.

[0010] As a further improvement of the technical solution of the present invention, it also includes a first end and a second end with the same structure, the first end is connected to an end of the first section away from the second section, and the width of the first end is greater than the width of the first body and the third body;

[0011] The second end portion is connected to an end of the third segment away from the second segment.

[0012] As a further improvement of the technical solution of the present invention, the width of the first connector is equal to the width of the second connector.

[0013] As a further improvement of the technical solution of the present invention, the width of the first connector is equal to the width of the second main body.

[0014] As a further improvement of the technical solution of the present invention, the width of the first end portion is greater than the width of the first connector.

[0015] As a further improvement of the technical solution of the present invention, the first connector and the second connector are parallel to each other and are both perpendicular to the first section.

[0016] As a further improvement of the technical solution of the present invention, the width of the third body is equal to the width of the first body, and the length of the third body is shorter than the length of the first body.

[0017] As a further improvement of the technical solution of the present invention, the first end is connected to the first body.

[0018] As a further improvement of the technical solution of the present invention, the width of the second section is equal to the width of the first body.

[0019] As a further improvement of the technical solution of the present invention, the width of the second body is 1.5 times the width of the first body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The fuse of this scheme adopts a three-stage design, and the line width change is added to the upper and lower first and third sections, and the length of the single-segment thin line is reduced, that is, the length of each first body is much smaller than the overall length of the first section, and the length of the second section is much smaller than the sum of the lengths of the first, second and third sections, thereby reducing the risk of deviation and reducing the heat loss during the fusing process. Although the second section in the middle does not have a line width change, the length of the second section is much smaller than the sum of the lengths of the first, second and third sections, and the length of the single-segment thin line of the traditional fuse is reduced by more than half. In the case that there is no excessively long thin line in the first and second sections, it is not easy to pull the fuse off or even break it when discharging waste after die-cutting, thereby avoiding the scrapping of the fuse, and ensuring the quality of the fuse after discharging waste, which has the effect of improving the yield rate of the fuse during the die-cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Reference numerals:

[0025] 1-first section; 11-first body; 12-second body; 13-third body; 14-first end;

[0026] 2-Second paragraph;

[0027] 3-third section; 31-second end;

[0028] 4-first connector;

[0029] 5- Second connector. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0031] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0032] Reference Figure 1A fuse comprises a first section 1, a first connector 4, a second section 2, a second connector 5 and a third section 3 which are connected in sequence in an approximately H-shaped shape. The first connector 4 and the second connector 5 are both arranged vertically. The first connector 4 has the function of connecting the first section 1 and the second section 2, and the second connector 5 has the function of connecting the second section 2 and the third section 3. The first section 1, the second section 2 and the third section 3 are all arranged horizontally and form a horizontal main structure of the fuse. The first section 1, the second section 2 and the third section 3 are parallel to each other and spaced apart.

[0033] The third section 3 is centrally symmetrical with the first section 1. The first section 1 includes a plurality of first bodies 11 and second bodies 12 that are alternately connected. The specific structure of the first section 1 can be referred to Figure 1 As shown, the first section 1 also includes a third body 13, one end of the third body 13 is connected to the second body 12, and the other end is connected to the first connector 4, the width of the third body 13 and the second body 12 are both smaller than the width of the second body 12, and the center line of the third body 13 coincides with the center line of each of the first bodies 11 and the second bodies 12.

[0034] The width of the second section 2 is uniform, and the widths of the first connector 4 and the second connector 5 are both greater than the widths of the first main body 11 , the third main body 13 , and the second section 2 .

[0035] After die-cutting, although it has been cut off, because the tool is very thin, there is still contact between the waste and the fuse circuit before the waste copper is discharged. When the waste is discharged, the circuit is only adhered by a micro-mucous membrane. The viscosity of the micro-mucous membrane is the same as the tension of the circuit. Under the same conditions, the larger the force area, the smaller the possibility of being pulled out of position. Among them, in order to reduce the length of a single-segment thin line and thus reduce the deviation, the line width of each interval between the first segment 1 and the second segment 2 is increased by 1.5 times, that is, the width of the second body 12 is 1.5 times the width of the first body 11. In order to reduce the length of a single-segment line and thus reduce the deviation, and to reduce the heat loss during overload, this scheme adopts a horizontal three-segment design, that is, the first segment 1, the second segment 2, and the third segment 3 are all horizontally arranged, and the three-segment design allows the heat to be in the middle position as much as possible. In order to ensure heat generation during overload, the middle line segment adopts a whole section of uniform thin wire, that is, the line width of the second section 2 located in the middle is uniformly set. Compared with traditional fuses, when the melting time is equal, the heat loss during the melting process is greatly reduced because the length of the second section 2 as the middle thin wire is less than half of that of the traditional fuse.

[0036] The fuse generates heat based on the current passing through the copper line, so that the heat generated by the copper material in a short time does not have time to dissipate and melts itself off. When the fuse melts and generates heat, some of the heat will be lost. Since the traditional fuse is a straight line, the area in contact with the outside world is larger than the fuse of this solution, so the traditional fuse loses more heat. The three-section design of the first section 1, the second section 2, and the third section 3 in this solution can reduce the heat loss during the melting process.

[0037] The fuse of this scheme adopts a three-stage design, and the line width changes are added to the upper and lower first sections 1 and the third section 3, and the length of the single-segment thin line is reduced, that is, the length of each first body 11 is much smaller than the overall length of the first section 1, and the length of the second section 2 is much smaller than the sum of the lengths of the first section 1, the second section 2 and the third section 3, thereby reducing the risk of deviation and reducing the heat loss during the fusing process. Although the second section 2 located in the middle does not have a line width change, the length of the second section 2 is much smaller than the sum of the lengths of the first section 1, the second section 2 and the third section 3, and the length of the single-segment thin line of the traditional fuse is reduced by more than half. In the case that there is no excessively long thin line in the first section 1 and the second section 2, it is not easy to pull the fuse off or even break it when discharging waste after die-cutting, thereby avoiding the scrapping of the fuse, and ensuring the quality of the fuse after discharging waste, which has the effect of improving the yield rate of the fuse during the die-cutting process.

[0038] Specifically, the fuse of this solution further includes a first end 14 and a second end 31 having the same structure, wherein the first end 14 is connected to an end of the first section 1 away from the second section 2, and the width of the first end 14 is greater than the width of the first body 11 and the third body 13. The second end 31 is connected to an end of the third section 3 away from the second section 2.

[0039] Specifically, the width of the second segment 2 is equal to that of the first body 11 , and is smaller than the second body 12 , the first connector 4 , the second connector 5 , the first end 14 and the second end 31 , that is, the second segment 2 is a thin line segment.

[0040] Specifically, for the structure in which the first end 14, the first section 1, the first connector 4, the second section 2, the second connector 5, the third section 3, and the second end 31 are connected in sequence, other structures such as chamfers can be used at the connection nodes of two adjacent structures to achieve a smooth transition according to actual conditions.

[0041] Specifically, the width of the first connector 4 is equal to the width of the second connector 5, and the widths of the first connector 4 and the second connector 5 are both equal to the width of the second body 12, so there will be no sudden change or excessive change in size, which is convenient for die-cutting and waste removal.

[0042] Specifically, the width of the first end 14 is equal to the width of the second end 31 and is greater than the width of the first connector 4. The sizes of both ends are relatively large, which is conducive to waste discharge after die-cutting, can avoid damage to the overall structure during waste discharge, and improve the yield of the fuse during the die-cutting process.

[0043] Specifically, the first connector 4 and the second connector 5 are parallel to each other and perpendicular to the first section 1 .

[0044] Specifically, the width of the third body 13 is equal to the width of the first body 11 , and the length of the third body 13 is shorter than the length of the first body 11 .

[0045] Specifically, the first end 14 is connected to the first body 11 , and the first end 14 is located at the outermost end of the first section 1 , and has a large width, which is convenient for waste discharge after die cutting. The other end of the first section 1 is connected to the first connector 4 through the third body 13 .

[0046] Reference Figure 1 In one embodiment, the first end 14 is arranged at the leftmost end of the first section 1, and the third body 13 is arranged at the rightmost end of the first section 1. Between the first end 14 and the third body 13, the first body 11 and the second body 12 are arranged alternately from left to right, and the number of the first body 11 and the second body 12 is equal, that is, the first end 14, the first body 11, the second body 12, the first body 11, the second body 12, the first body 11, the second body 12, the first body 11, the second body 12, and the third body 13 are connected in sequence from left to right in a straight line and arranged horizontally. The length of each section structure can be set according to actual conditions. The second section 2 is arranged horizontally. Since the first section 1 and the third section 3 are symmetrical with the center of the second section 2 as the center, they are centrally symmetrical. In the third section 3, the corresponding structure is connected in sequence from right to left in a straight line and arranged horizontally. The second end 31 is located at the rightmost end, and the third body 13 is located at the leftmost end. The first connector 4 and the second connector 5 are both vertically arranged, the upper end of the first connector 4 is connected to the right end of the third main body 13 in the first section 1, and the lower end is connected to the right end of the second section 2; the upper end of the second connector 5 is connected to the left end of the second section 2, and the lower end is connected to the left end of the third main body 13 in the second section 2.

[0047] For other contents of the fuse described in the present invention, please refer to the prior art and will not be described in detail here.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A fuse, characterized in that: It comprises a first section, a first connector, a second section, a second connector and a third section which are connected in sequence in an approximately H-shaped shape, wherein the first section, the second section and the third section are all arranged horizontally; The third section is centrally symmetrically arranged with the first section, the first section includes a plurality of first bodies and second bodies connected alternately, the first section also includes a third body, one end of the third body is connected to one of the second bodies, and the other end is connected to the first connector, the widths of the third body and the first body are both smaller than the width of the second body, and the midline of the third body coincides with the midline of each of the first body and each of the second body; The width of the second section is uniform, and the widths of the first connector and the second connector are both greater than the widths of the first main body, the third main body, and the second section.

2. The fuse according to claim 1, characterized in that: It also includes a first end and a second end with the same structure, the first end is connected to an end of the first section away from the second section, and the width of the first end is greater than the width of the first body and the third body; The second end portion is connected to an end of the third segment away from the second segment.

3. The fuse according to claim 2, characterized in that: The width of the first connecting body is equal to the width of the second connecting body.

4. The fuse according to claim 2, characterized in that: The width of the first connecting body is equal to the width of the second main body.

5. The fuse according to claim 4, characterized in that: The width of the first end portion is greater than the width of the first connecting body.

6. The fuse according to claim 2, characterized in that: The first end is connected to the first body.

7. The fuse according to claim 1, characterized in that: The first connector and the second connector are parallel to each other and perpendicular to the first section.

8. The fuse according to claim 1, characterized in that: The width of the third body is equal to that of the first body, and the length of the third body is less than that of the first body.

9. The fuse according to claim 1, characterized in that: The width of the second section is equal to the width of the first body.

10. The fuse according to claim 1, characterized in that: The width of the second body is 1.5 times the width of the first body.

Images