CN117457444B - Low-voltage fuse for new energy storage equipment and manufacturing process thereof - Google Patents
Low-voltage fuse for new energy storage equipment and manufacturing process thereof Download PDFInfo
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- CN117457444B CN117457444B CN202311788967.6A CN202311788967A CN117457444B CN 117457444 B CN117457444 B CN 117457444B CN 202311788967 A CN202311788967 A CN 202311788967A CN 117457444 B CN117457444 B CN 117457444B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 238000004146 energy storage Methods 0.000 title claims abstract description 40
- 239000000155 melt Substances 0.000 claims abstract description 121
- 238000003466 welding Methods 0.000 claims abstract description 105
- 239000000463 material Substances 0.000 claims abstract description 78
- 230000000694 effects Effects 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 33
- 230000006698 induction Effects 0.000 claims description 17
- 238000004080 punching Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 4
- 229910000679 solder Inorganic materials 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000003825 pressing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/06—Fusible members characterised by the fusible material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
- H01H85/11—Fusible members characterised by the shape or form of the fusible member with applied local area of a metal which, on melting, forms a eutectic with the main material of the fusible member, i.e. M-effect devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Abstract
The invention relates to the technical field of low-voltage fuses, and discloses a low-voltage fuse for new energy storage equipment and a manufacturing process thereof, wherein the low-voltage fuse comprises the following components: manufacturing a melt according to a set resistance value, and forming a groove at a pre-fusing position on the melt; quantitatively adding an effect material in an adding region of the groove, and reserving flowing regions at two sides of the adding region; heating the effect material to melt the effect material, cooling the effect material, connecting the effect material in the groove, and covering the flow area by the effect material; and respectively positioning the melt and the touch knife on a welding table, positioning a welding area where the melt and the touch knife are stacked, and then welding. The low-voltage fuse manufactured by the process can prevent the poor contact between the melt and the contact knife after long-time use and reduce the situation of false break; through the accurate interpolation to effect material, guarantee that the fusing time of different low-voltage fuses has better uniformity, promote result of use, guarantee to use this low-voltage fuse's circuit can obtain effective protection, promote safety in utilization.
Description
Technical Field
The invention relates to the technical field of low-voltage fuses, in particular to a low-voltage fuse for new energy storage equipment and a manufacturing process thereof.
Background
The fuse mainly comprises a fuse body, a fusion tube for installing the fuse body and a fusion seat, when the fuse is used, the fuse body should be connected in series in a protected circuit, under normal conditions, the fuse body of the fuse is equivalent to a section of wire, and when the circuit has a short circuit fault, the fuse body can quickly fuse and break the circuit, thereby playing a role in protecting the circuit and electrical equipment. The low-voltage fuse is a low-voltage electric appliance which cuts off a circuit by fusing one or more melts with special designs by heat generated by the low-voltage fuse after the current exceeds a specified value and a certain time passes.
When the low-voltage fuse is used on new energy storage equipment (such as a battery on a new energy automobile), the low-voltage fuse is required to have higher fusing accuracy so as to ensure the safe use of the new energy storage equipment. When the low-voltage fuse is used, false break often occurs due to the low-voltage fuse, or the fusing time is long, and the protection circuit cannot be fused in time, so that serious consequences are caused; this series of causes is:
firstly, poor contact exists at two ends of the low-voltage fuse, for example, the contact between a melt and a contact blade is poor, and the resistance of the contact position is increased, so that abnormal temperature rise is brought to the fuse, and the low-voltage fuse is broken by mistake, so that the use is influenced;
through researches, the welding quality of the melt and the contact blade has great influence on poor contact of the melt and the contact blade, such as welding position deviation, so that connection is not firm, and poor contact is caused when the contact blade is used for a long time;
the second point is that the melt resistance of the low-voltage fuse is smaller, in order to ensure the fusing time, the fusing time is prevented from being overlong, an effect material is generally added on the melt of the low-voltage fuse, the melting point of the effect material is lower than that of the melt, and a fusing part with larger resistance can be formed with the melt after the temperature is increased, so that the fusing time is ensured, but the quantity of the effect material needs to be precisely controlled, so that the fusing time of the low-voltage fuse can be ensured, if the quantity of the effect material is overlarge, the resistance after the temperature is increased is overlarge, the fusing time is shortened, otherwise, the fusing time is increased, the fusing time of the low-voltage fuse leaving the factory is different, and the application consistency of the low-voltage fuse on new energy storage equipment is poorer;
at present, an effect material (such as soldering tin) is added into a groove formed on a melt, when the effect material is heated and connected with the groove, the effect material overflows from the groove to the outside or overflows to the surface of the melt (discrete and discontinuous), when the working temperature of a low-voltage fuse is increased, the effect material has a high probability of flowing out from the groove to the outside after being melted, namely, the effect material is not combined with the melt to form an alloy with a larger resistance value, but is dripped into a melting tube, and the resistance value of a fusing part is reduced, so that the fusing time is increased, and the consistency of the fusing time is poor for different low-voltage fuses, so that the use is influenced.
Therefore, there is a need for a low voltage fuse for a new energy storage device and a manufacturing process thereof, so as to at least partially solve the problems in the prior art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the above problems, the present invention provides a manufacturing process of a low voltage fuse for a new energy storage device, including:
s1, manufacturing a melt according to a set resistance value, and forming a groove at a pre-fusing position on the melt;
s2, quantitatively adding effect materials in an adding area of the groove, and reserving flowing areas on two sides of the adding area;
s3, heating the effect material to enable the effect material to be molten, connecting the effect material into the groove after the effect material is cooled, and covering a flow area by the effect material;
s4, respectively positioning and placing the melt and the touch knife on a welding table, positioning a welding area where the melt and the touch knife are stacked, and then welding.
Preferably, the groove is arranged in the width direction of the melt, the bottom surface of the adding area in the groove is a plane, the bottom surface of the flowing area in the groove is an inclined surface, and one side of the inclined surface, which is close to the adding area, is lower than the other side of the inclined surface.
Preferably, the S2 includes: positioning a groove on the melt, enabling the vertical center of an extrusion mechanism containing the effective material to coincide with the vertical center of the groove, and extruding a preset amount of the effective material into an adding area of the groove;
wherein, the extrusion head of extrusion mechanism is flat.
Preferably, the length of the effect material extruded by the extrusion head is smaller than or equal to the length of the adding area, and the height of the extruded effect material is higher than the height of the highest point of the inclined surface.
Preferably, the S4 includes:
positioning and placing a touch knife on a first bearing table positioned on two sides of a welding table, positioning and placing a melt on a second bearing table positioned between the two first bearing tables, wherein the melt is positioned above the touch knife;
detecting welding areas of the contact knife and the melt by utilizing a welding positioning mechanism, and judging whether electrode heads positioned on the upper side and the lower side for welding are positioned in the welding areas or not;
and if the electrode tip is positioned in the welding area, performing welding operation, and if the electrode tip is positioned beyond the welding area, simultaneously adjusting the electrode tip positions at the upper side and the lower side until the electrode tip is positioned in the welding area.
Preferably, the second bearing table is provided with at least two positioning columns, and the punching holes or punching notches on the melt are limited by the positioning columns, so that the melt is positioned and placed on the second bearing table;
the welding device is characterized in that a welding notch is formed in the first bearing table, positioning grooves corresponding to limiting pieces on the contact knife are formed in two sides of the welding notch, and one side, close to the second bearing table, of the contact knife is stacked below the end portion of the melt.
Preferably, the welding positioning mechanism comprises at least four positioning units uniformly distributed on the outer side of the electrode head, a connecting block is arranged at one end of the electrode head, which is far away from the welding table, and the positioning units are arranged on the connecting block; the positioning unit includes:
one end of the induction cylinder is connected with the connecting block;
one end of the induction rod is connected in the induction cylinder in a sliding way, and the other end of the induction rod extends to the outside of the induction cylinder;
the elastic piece is arranged between the induction rod and the induction cylinder;
the pressure sensor is arranged between the sensing rod and the elastic piece or between the elastic piece and the sensing cylinder.
Preferably, determining whether the electrode tip is within the welding region includes:
the electrode head moves to a first preset height towards one side of the welding area, and whether the pressure values detected by the pressure sensors are all in a preset range is respectively judged;
if yes, continuing to move to a second preset height along the same direction;
if not, judging the pressure value which is not in the preset range, if the pressure value is larger than the maximum end value of the preset range, judging that the welding area is uneven or has foreign matters, if the pressure value is smaller than the minimum end value of the preset range, marking the direction of the pressure sensor corresponding to the pressure value as a target direction, and then adjusting the electrode tip to move in the opposite direction of the target direction for position adjustment.
Preferably, positioning the groove in the melt includes:
one side of the groove faces upwards, a melt image is acquired from the upper side, and first positioning data of the melt image are extracted;
processing the melt image to obtain second positioning data of the processed melt image;
judging whether the first positioning data and the second positioning data exist in melt type data stored in the storage module in advance;
if the first positioning data and the second positioning data can be inquired in the storage module, corresponding melt type data are called to position the melt image, and the positions of the grooves and the preset amount of the effect materials required by the corresponding melt types are obtained;
wherein the first positioning data includes: the edge size and position of the melt and the groove size and position of the melt; the second positioning data includes: the location of each punch hole or each punch slot on the melt.
The invention also provides a low-voltage fuse for the new energy storage device, which comprises: the melt is provided with a fusing part, two ends of the melt are provided with contact blades, and the contact blades are provided with limiting sheets; the outside of the melt is sleeved with a melt pipe, the inner sides of the two ends of the melt pipe are provided with limiting rings, and one side of each limiting ring, which is close to a port of the melt pipe, is provided with a step surface which is contacted with a limiting piece; the end outside of fusion tube is equipped with the top cap, be equipped with sealed pad between top cap and the fusion tube, touch the one end that the sword kept away from the fuse-element and pass the top cap setting.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the low-voltage fuse for the new energy storage equipment and the manufacturing process thereof, the groove is divided into three areas, the middle is the adding area for quantitatively adding the solder paste, the two sides of the adding area are the flowing areas, and a flowing space is provided for the heated solder paste, so that the solder paste is prevented from flowing out after being heated, after the flowing areas are reserved, the solder paste flows to the edge of the flowing areas after being heated, so that surface tension can be formed, no longer flows outwards, the solder paste is fixed in the groove after being cooled, more accurate control over the addition of the solder paste in the manufacturing process is realized, and the fusing time of different low-voltage fuses is ensured to have better consistency;
positioning the welding areas of the stacked melt and the contact blade before welding, and then welding, so that the situation of missing welding or welding position deviation can be prevented, the stability of the connection of the melt and the contact blade is ensured, poor contact of the melt and the contact blade after long-time use is prevented, and the situation of false breakage of the low-voltage fuse is reduced;
the low-voltage fuse manufactured by the manufacturing process can prevent the poor contact between the melt and the contact knife after long-time use, reduce the occurrence of false breaking and ensure the use stability of the fuse; through the accurate interpolation to effect material, can guarantee that the fusing time of different low-voltage fuses has better uniformity, promote result of use, guarantee to use the circuit of this low-voltage fuse can obtain effective protection, promote safety in utilization.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a manufacturing process of a low-voltage fuse for a new energy storage device according to the present invention;
FIG. 2 is a schematic diagram of a front view of a melt in a process for manufacturing a low voltage fuse for a new energy storage device according to the present invention;
fig. 3 is a schematic diagram of a distribution structure of a flow area and an adding area of a groove when a bottom surface of the adding area is an inclined surface in a manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 4 is a schematic diagram of a distribution structure of a flow area and an adding area of a groove when a bottom surface of the adding area is a plane in a manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 5 is a schematic structural diagram of an extrusion mechanism adding an effect material into a groove in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 6 is a schematic top view of an effect material added in a groove in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 7 is a schematic structural diagram of an added effect material in a groove when the bottom surface of an added area is an inclined surface in the manufacturing process of the low-voltage fuse for the new energy storage device;
fig. 8 is a schematic structural diagram of an added effect material in a groove when the bottom surface of an added area is a plane in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
FIG. 9 is a schematic diagram of an effect material in a groove after being heated and cooled when the bottom surface of an added area is an inclined surface in the manufacturing process of the low-voltage fuse for the new energy storage device;
FIG. 10 is a schematic diagram of an effect material in a groove after being heated and cooled when the bottom surface of an added area is a plane in the manufacturing process of the low-voltage fuse for the new energy storage device;
FIG. 11 is a schematic view of a flat extrusion head in a process for manufacturing a low-voltage fuse for a new energy storage device according to the present invention;
fig. 12 is a schematic diagram of the bottom structure of an extrusion head in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
FIG. 13 is a schematic view of a structure in which a melt and a contact blade are placed on a soldering station in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 14 is a schematic structural view of a welding positioning mechanism in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 15 is a schematic structural diagram of the electrode tip at a second preset height in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
FIG. 16 is a schematic view of a welding area in a manufacturing process of a low voltage fuse for a new energy storage device according to the present invention;
fig. 17 is a schematic top view of a welding table in the manufacturing process of the low-voltage fuse for the new energy storage device according to the present invention;
fig. 18 is a schematic diagram of the internal structure of the low-voltage fuse for the new energy storage device according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 to 17, the present invention provides a manufacturing process of a low voltage fuse for a new energy storage device, including:
s1, manufacturing a melt 1 according to a set resistance value, and forming a groove 2 at a pre-fusing position on the melt 1;
s2, quantitatively adding the effect material 3 in the adding area 21 of the groove 2, wherein the flowing areas 22 are reserved on two sides of the adding area 21;
s3, heating the effect material 3 to melt the effect material, cooling the effect material, connecting the effect material into the groove 2, and covering the flow area 22 with the effect material 3;
s4, positioning and placing the melt 1 and the contact blade 5 on a welding table respectively, positioning a welding area 6 where the melt 1 and the contact blade 5 are stacked, and then welding.
Manufacturing a melt 1 according to a set resistance value, forming a punching hole 12 and a punching notch 13 on the melt 1, forming a groove 2, then adding an effect material 3 into the groove 2, heating the effect material 3, cooling, and fixing the effect material 3 in the groove 2;
the effect material 3 is preferably solder paste, the addition amount of the solder paste is convenient to control, and the heating is convenient;
when the effect material 3 is added, in order to avoid flowing to the outside of the groove 2 after heating, the groove 2 is divided into three areas, the middle is provided with an adding area 21 for quantitatively adding solder paste, the two sides of the adding area 21 are provided with flowing areas 22 for providing flowing space for the heated solder paste, so that the solder paste is prevented from flowing out after heating, after the flowing areas 22 are reserved, the solder paste flows to the edge of the flowing areas 22 after heating to form surface tension (as shown in fig. 9 and 10), no longer flows outwards, and is fixed in the groove 2 after cooling, so that the addition of the solder paste is more accurately controlled in the manufacturing process, and the fusing time of different low-voltage fuses is ensured to have better consistency.
When the fuse-element 1 and touch sword 5 weld, in order to prevent that both welding position from taking place the skew, the welding area 6 to fuse-element 1 and touch sword 5 that stacks before the welding fixes a position, and the back is confirmed to the position, welds again, can adopt the mode of spot welding to weld, like this, can prevent to appear leaking the condition that welds or welding position skew, guarantees the stability that fuse-element 1 and touch sword 5 are connected, prevents both contact failure after long-time use, reduces the circumstances that the low voltage fuse appears breaking by mistake.
As shown in fig. 3 and 4, further, the groove 2 is disposed throughout the width direction of the melt 1, the bottom surface of the adding region 21 in the groove 2 is a plane, the bottom surface of the flow region 22 in the groove 2 is a slope, and one side of the slope near the adding region 21 is lower than the other side thereof.
Of course, the addition zone 21 and the flow zone 22 may both be planar;
the inclined flow areas 22 provide resistance to the flow of molten effector material 3 out of the recess 2, further reducing the probability of flow.
As shown in fig. 5-8, in one embodiment, the S2 includes: positioning the groove 2 on the melt 1, enabling the vertical center of the extruding mechanism 7 containing the effective material 3 to coincide with the vertical center of the groove 2, and extruding a preset amount of the effective material 3 into the adding area 21 of the groove 2;
wherein the extrusion head 71 of the extrusion mechanism 7 is flat.
In order to ensure the accuracy of the adding position of the effect material 3, the effect material 3 is prevented from being added to the outer side of the groove 2, the extrusion head 71 is arranged to be flat, the effect material 3 extruded by the extrusion head 71 in the flat shape is strip-shaped in the groove 2, so that the effect material 3 can be prevented from being fully accumulated at the same position of the groove 2 and overflowing to the outside of the groove 2, and before the effect material is added, the position of the melt 1 is required to be positioned, so that the position of the groove 2 is positioned, the vertical center of the extrusion mechanism 7 is overlapped with the vertical center of the groove 2, the extrusion head 71 corresponds to the position of the groove 2, and a preset amount of effect material 3 is extruded into the groove 2, and the accuracy of the adding process position is ensured.
As shown in fig. 11 and 12, further, the length of the effect material 3 extruded by the extrusion head 71 is equal to or less than the length of the adding region 21, and the height of the extruded effect material 3 is higher than the height of the highest point of the inclined surface.
In order to control the extrusion size of the effect material 3 from the extrusion head 71, different extrusion heads 71 can be selected for the grooves 2 with different sizes, and the extrusion holes of the extrusion heads 71 can be a plurality of circular holes arranged side by side, so that the effect material 3 extruded into the grooves 2 is in a long strip shape, and is suitable for the length of the adding area 21 of the grooves 2, and when the bottom surface of the flowing area 22 is an inclined surface, the height of the highest point of the inclined surface is smaller than the height of the extruded effect material 3, so that not only can the flowing resistance be formed for the flowing effect material 3, but also the effect material 3 can be ensured to be filled in the bottom surface of the grooves 2.
Further, positioning the groove 2 on the melt 1, comprising:
one side of the groove 2 is directed upwards, a melt image is acquired from above, and first positioning data of the melt image are extracted;
processing the melt image to obtain second positioning data of the processed melt image;
judging whether the first positioning data and the second positioning data exist in melt type data stored in the storage module in advance;
if the first positioning data and the second positioning data can be inquired in the storage module, corresponding melt type data are called to position the melt image, and the position of the groove 2 and the preset amount of the effect material 3 required by the corresponding melt type are obtained;
wherein the first positioning data includes: the edge size and position of the melt 1 and the groove 2 size and position of the melt 1; the second positioning data includes: the location of each punched hole 12 or each punched slot 13 on the melt 1.
In the actual production and manufacturing process, a plurality of melts 1 are placed on a conveying mechanism, then an extrusion mechanism 7 is arranged above the conveying mechanism, when each melt 1 moves to the lower part of the extrusion mechanism 7, positioning is needed, and then the positions of the extrusion mechanism 7 or the melts 1 are finely adjusted according to the positioning result so as to realize the accurate addition of an effect material 3;
specifically, when the melt 1 moves below the extrusion mechanism 7, a melt image is obtained, first positioning data of the melt image, namely the edge size and the position of the melt 1 and the size and the position of the groove 2 of the melt 1 are extracted, numbering and marking are carried out on each size and each position, then the melt image is processed, namely the melt image is subjected to binarization processing, then second positioning data, namely the position of the punching hole 12 or each punching notch 13 is accurately extracted, numbering and marking are carried out, then the positioning data subjected to numbering and marking are compared with melt type data pre-stored in a storage module, the melt types of the first positioning data and the second positioning data are judged, positioning of the melt 1 can be completed according to the corresponding melt type data, and then positioning information of the groove 2 and the preset amount of the required effect material 3 are obtained;
since different types of melts 1 may be conveyed on the conveying mechanism, they differ in the outline and the size, the size and the position of the groove 2, and the positions of the punching holes 12 and the punching notches 13, by this method, different types of melts 1 can be distinguished to be positioned by the data stored in advance, and the preset amount of the effect material 3 corresponding to the type of melt and the extrusion head 71 can be selected (a plurality of extrusion heads 71 corresponding to different types of melts 1 can be provided on one extrusion mechanism 7, intelligent switching can be performed), further ensuring the accuracy of the addition of the effect material 3, and intelligent addition can be achieved.
As shown in fig. 13, in one embodiment, the S4 includes:
positioning and placing the contact knives 5 on the first bearing tables 8 positioned on two sides of the welding table, positioning and placing the melt 1 on the second bearing table 9 positioned between the two first bearing tables 8, wherein the melt 1 is positioned above the contact knives 5;
detecting a welding area 6 of the contact knife 5 and the melt 1 by using a welding positioning mechanism, and judging whether electrode tips 10 positioned on the upper side and the lower side for welding are positioned in the welding area 6 or not;
if the electrode tip 10 is in the welding area 6, the welding operation is performed, and if the electrode tip 10 is located beyond the welding area 6, the electrode tip 10 positions on the upper side and the lower side are adjusted at the same time until the electrode tip 10 is located in the welding area 6.
Because of the smaller size of the melt 1 and the contact blade 5, the stability of the connection is easily affected if the welding position is inaccurate, for example, the welding position is positioned at the edges of the melt 1 and the contact blade 5, so that the welding is easy to open, and poor contact is caused;
therefore, before welding, the welding positioning mechanism is adopted to detect the welding area 6 of the contact knife 5 and the melt 1, so that the electrode tip 10 can be ensured to be positioned in the welding area 6 during welding, the deviation of the welding position is prevented, and the welding stability is ensured;
during welding, the contact blade 5 and the melt 1 are positioned and placed on the first carrying table 8 and the second carrying table 9 respectively, and part of the two areas are overlapped, namely the areas to be welded.
As shown in fig. 17, specifically, for positioning and placing the melt 1, at least two positioning columns 11 are disposed on the second carrying table 9, and the punching hole 12 or the punching notch 13 on the melt 1 is limited by the positioning columns 11, so that the melt 1 is positioned and placed on the second carrying table 9;
for positioning and placing the contact blade 5, a welding notch 81 is formed in the first bearing table 8, positioning grooves 82 corresponding to the limiting pieces 51 on the contact blade 5 are formed in two sides of the welding notch 81, and one side, close to the second bearing table 9, of the contact blade 5 is stacked below the end part of the melt 1.
In order to improve the welding efficiency, in the actual welding process, a plurality of welding tables can be arranged on the welding conveying mechanism, electrode heads 10 on the upper side and the lower side are respectively positioned above and below the welding tables, and when the welding conveying mechanism conveys a group of contact knives 5 (2) and melts 1 (1) in place, the welding region 6 is detected through the welding positioning mechanism, the position is adjusted, then the welding is performed, and the accuracy of the welding position is ensured.
As shown in fig. 14-16, further, the welding positioning mechanism comprises at least four positioning units 4 uniformly distributed on the outer side of the electrode tip 10, one end of the electrode tip 10 far away from the welding table is provided with a connecting block 14, and the positioning units 4 are arranged on the connecting block 14; the positioning unit 4 includes:
an induction cylinder 41 having one end connected to the connection block 14;
an induction rod 42 having one end slidably connected to the inside of the induction cylinder 41 and the other end extending to the outside of the induction cylinder 41;
an elastic member 43 disposed between the sensing rod 42 and the sensing cylinder 41;
the pressure sensor 44 is provided between the sensing rod 42 and the elastic member 43, or between the elastic member 43 and the sensing cylinder 41.
The electrode heads 10 arranged up and down are respectively connected with a pressing mechanism through a connecting block 14, the pressing mechanism can control the upper electrode head 10 and the lower electrode head 10 to press the welding area 6, and then the upper electrode head 10 and the lower electrode head 10 can be welded after being electrified.
Specifically, it is determined whether the electrode tip 10 includes in the welding region 6:
the electrode tip 10 moves to a first preset height towards one side of the welding area 6, and whether the pressure values detected by the pressure sensors 44 are all in a preset range is respectively judged;
if yes, continuing to move to a second preset height along the same direction;
if not (at least one pressure value is not within the preset range), (based on the above positioning unit 4), the magnitude of the pressure value not within the preset range is judged, if it is greater than the maximum end value of the preset range, the result of the judgment is that the welding area 6 is uneven or has foreign matter, if it is less than the minimum end value of the preset range, the direction in which the pressure sensor 44 corresponding to the pressure value is located is marked as the target direction, and then the electrode tip 10 is adjusted to move in the opposite direction to the target direction for position adjustment.
The welding area 6 is an area surrounded by a plurality of induction rods 42;
when the electrode tip 10 moves to the first preset height, the plurality of sensing rods 42 positioned above contact with the top surface of the melt 1 to form an extrusion effect on the elastic piece 43, the plurality of sensing rods 42 positioned below contact with the contact blade 5 to form an extrusion effect on the elastic piece 43, and the two electrode tips 10 arranged up and down are not contacted with the melt 1 and the contact blade 5;
at this time, if the pressure values detected by the plurality of pressure sensors 44 are all within the preset range, it indicates that each of the sensing rods 42 located above is in effective contact with the melt 1, and the sensing rod 42 located below is in effective contact with the contact blade 5, so that the electrode tips 10 can continue to move to a second preset height along the same direction, the second preset height is the welding position, the upper electrode tip 10 and the lower electrode tip 10 form extrusion on the welding area 6, and electric welding is performed;
if at least one of the pressure values detected by the plurality of pressure sensors 44 is not within the preset range, it is necessary to determine that the sensing rod 42 corresponding to the pressure sensor 44 is specific (the determination is based on the positioning unit 4 located above since the positions of the electrode tips 10 on the upper and lower sides are synchronously adjusted), that is, if the pressure value is greater than the maximum endpoint value of the preset range, the determination result is that the welding area 6 is uneven or has foreign matter, if the pressure value is less than the minimum endpoint value of the preset range, the direction in which the pressure sensor 44 corresponding to the pressure value is located is marked as the target direction, then the electrode tip 10 is adjusted to move in the opposite direction to the target direction, when the electrode tip 10 is adjusted, the upper and lower electrode tips 10 are synchronously adjusted in the minimum unit, if the positioning unit 4 located above detects that the position has been adjusted into the welding area 6, the position unit 4 located below is used for rechecked, and if the detection result is the same, the electrode tip 10 can be moved to the second preset height toward one side of the welding area 6.
As shown in fig. 18, the present invention further provides a low voltage fuse for a new energy storage device, and a manufacturing process of the low voltage fuse for the new energy storage device includes: the melt 1 is provided with a fusing part 15, two ends of the melt 1 are provided with contact knives 5, and the contact knives 5 are provided with limiting sheets 51; the outside of the melt 1 is sleeved with a melting pipe 16, the inner sides of two ends of the melting pipe 16 are provided with limiting rings 17, and one side of the limiting rings 17, which is close to the port of the melting pipe 16, is provided with a step surface which is contacted with a limiting piece 51; a top cover 18 is arranged on the outer side of the end part of the melting pipe 16, a sealing gasket 19 is arranged between the top cover 18 and the melting pipe 16, and one end, far away from the melt 1, of the contact knife 5 penetrates through the top cover 18.
The limiting piece 51 can be tightly pressed between the limiting ring 17 and the sealing gasket 19 through the limiting ring 17, the pressing force is provided through the top cover 18, the tightness of the fusion tube 16 is ensured, the inside of the low-voltage fuse is prevented from being corroded by moisture, and the service life and the stability of the low-voltage fuse are ensured;
the low-voltage fuse manufactured by the manufacturing process can prevent the melt 1 from being in poor contact with the contact blade 5 after long-time use, reduce the occurrence of false breaking and ensure the use stability of the low-voltage fuse; through the accurate interpolation to effect material 3, can guarantee that the fusing time of different low-voltage fuses has better uniformity, promote result of use, guarantee that the circuit that uses this low-voltage fuse can obtain effective protection, promote safety in utilization.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. A method of manufacturing a low voltage fuse for a new energy storage device, comprising:
s1, manufacturing a melt (1) according to a set resistance value, and forming a groove (2) at a pre-fusing position on the melt (1);
s2, quantitatively adding an effect material (3) in an adding area (21) of the groove (2), and reserving flowing areas (22) on two sides of the adding area (21);
s3, heating the effect material (3) to enable the effect material to be molten, connecting the effect material into the groove (2) after the effect material is cooled, and covering the flow area (22) by the effect material (3);
s4, respectively positioning and placing the melt (1) and the contact blade (5) on a welding table, positioning a welding area (6) where the melt (1) and the contact blade (5) are stacked, and then welding;
the step S4 comprises the following steps:
positioning and placing the contact knives (5) on the first bearing tables (8) positioned on two sides of the welding table, positioning and placing the melt (1) on the second bearing table (9) between the two first bearing tables (8), wherein the melt (1) is positioned above the contact knives (5);
detecting a welding area (6) of the contact knife (5) and the melt (1) by utilizing a welding positioning mechanism, and judging whether electrode tips (10) positioned at the upper side and the lower side for welding are positioned in the welding area (6);
if the electrode tip (10) is positioned in the welding area (6), performing welding operation, and if the position of the electrode tip (10) exceeds the range of the welding area (6), simultaneously adjusting the positions of the electrode tip (10) at the upper side and the lower side until the electrode tip (10) is positioned in the welding area (6);
at least two positioning columns (11) are arranged on the second bearing table (9), and a punching hole (12) or a punching notch (13) on the melt (1) is limited with the positioning columns (11) to position and place the melt (1) on the second bearing table (9);
a welding notch (81) is formed in the first bearing table (8), positioning grooves (82) corresponding to the limiting sheets (51) on the contact knife (5) are formed in two sides of the welding notch (81), and one side, close to the second bearing table (9), of the contact knife (5) is stacked below the end part of the melt (1);
the welding positioning mechanism comprises at least four positioning units (4) which are uniformly distributed on the outer side of the electrode head (10), a connecting block (14) is arranged at one end, far away from the welding table, of the electrode head (10), and the positioning units (4) are arranged on the connecting block (14); the positioning unit (4) comprises:
an induction cylinder (41) one end of which is connected to the connection block (14);
one end of the induction rod (42) is connected in the induction cylinder (41) in a sliding way, and the other end of the induction rod extends to the outside of the induction cylinder (41);
an elastic member (43) provided between the sensing rod (42) and the sensing cylinder (41);
and a pressure sensor (44) provided between the sensing rod (42) and the elastic member (43), or between the elastic member (43) and the sensing cylinder (41).
2. The method of manufacturing a low voltage fuse for a new energy storage device according to claim 1, wherein the groove (2) is provided through the width direction of the melt (1), the bottom surface of the addition region (21) in the groove (2) is a plane, the bottom surface of the inner flow region (22) in the groove (2) is an inclined surface, and one side of the inclined surface near the addition region (21) is lower than the other side thereof.
3. The method of manufacturing a low voltage fuse for a new energy storage device according to claim 2, wherein S2 comprises: positioning a groove (2) on a melt (1) to enable the vertical center of an extrusion mechanism (7) containing an effective material (3) to coincide with the vertical center of the groove (2), and extruding a preset amount of the effective material (3) into an adding area (21) of the groove (2);
wherein the extrusion head (71) of the extrusion mechanism (7) is flat.
4. A method of manufacturing a low voltage fuse for a new energy storage device as claimed in claim 3, wherein the length of the extruded effect material (3) from the extrusion head (71) is equal to or less than the length of the addition region (21), and the height of the extruded effect material (3) is higher than the height of the highest point of the inclined surface.
5. The method of manufacturing a low-voltage fuse for a new energy storage device according to claim 1, wherein determining whether the electrode tip (10) is within the welding region (6) comprises:
the electrode tip (10) moves to a first preset height towards one side of the welding area (6), and whether the pressure values detected by the pressure sensors (44) are all in a preset range is respectively judged;
if yes, continuing to move to a second preset height along the same direction;
if not, judging the magnitude of the pressure value which is not in the preset range, if the pressure value is larger than the maximum end value of the preset range, judging that the welding area (6) is uneven or has foreign matters, if the pressure value is smaller than the minimum end value of the preset range, marking the direction of the pressure sensor (44) corresponding to the pressure value as the target direction, and then adjusting the electrode tip (10) to move in the opposite direction of the target direction to adjust the position.
6. A method of manufacturing a low voltage fuse for a new energy storage device as claimed in claim 3, characterized in that positioning the recess (2) in the melt (1) comprises:
one side of the groove (2) faces upwards, a melt image is acquired from the upper side, and first positioning data of the melt image are extracted;
processing the melt image to obtain second positioning data of the processed melt image;
judging whether the first positioning data and the second positioning data exist in melt type data stored in the storage module in advance;
if the first positioning data and the second positioning data can be inquired in the storage module, corresponding melt type data are called to position the melt image, and the position of the groove (2) and the preset amount of the effect material (3) required by the corresponding melt type are obtained;
wherein the first positioning data includes: the edge size and position of the melt (1) and the groove (2) size and position of the melt (1); the second positioning data includes: the position of each punch hole (12) or each punch notch (13) on the melt (1).
7. A low-voltage fuse for a new energy storage device, a method for manufacturing a low-voltage fuse for a new energy storage device according to any one of claims 1 to 6, comprising: the melt (1) is provided with a fusing part (15), two ends of the melt (1) are provided with contact knives (5), and the contact knives (5) are provided with limiting sheets (51); the outer side of the melt (1) is sleeved with a melting pipe (16), the inner sides of two ends of the melting pipe (16) are provided with limiting rings (17), and one side, close to the port of the melting pipe (16), of the limiting rings (17) is provided with a step surface which is contacted with a limiting piece (51); the end outside of fusion tube (16) is equipped with top cap (18), be equipped with sealed pad (19) between top cap (18) and fusion tube (16), the one end that touch sword (5) kept away from fuse-element (1) passes top cap (18) setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311788967.6A CN117457444B (en) | 2023-12-25 | 2023-12-25 | Low-voltage fuse for new energy storage equipment and manufacturing process thereof |
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| CN202311788967.6A CN117457444B (en) | 2023-12-25 | 2023-12-25 | Low-voltage fuse for new energy storage equipment and manufacturing process thereof |
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| CN117457444B true CN117457444B (en) | 2024-03-05 |
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|---|---|
| CN117457444A (en) | 2024-01-26 |
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