CN114204362A - Structure of laminated busbar with insulation film bending and manufacturing process thereof - Google Patents
Structure of laminated busbar with insulation film bending and manufacturing process thereof Download PDFInfo
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- CN114204362A CN114204362A CN202111526453.4A CN202111526453A CN114204362A CN 114204362 A CN114204362 A CN 114204362A CN 202111526453 A CN202111526453 A CN 202111526453A CN 114204362 A CN114204362 A CN 114204362A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
- H01R25/161—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
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- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention provides a structure of a laminated busbar with an insulating film bend and a manufacturing process thereof, wherein the structure comprises a plurality of layers of busbars and a plurality of insulating films; at least one insulating film is arranged on the busbar; the plurality of layers of the busbars and the plurality of insulating films are integrated through hot pressing; the laminated busbar is manufactured by the steps of stamping, electroplating and bending the busbar material, cutting the insulating film, mounting the insulating film, the isolation paper and the busbar material into a hot-pressing die, carrying out hot-pressing integration on the insulating film and the busbar material, bending the connecting part of the busbar material, then carrying out cold-pressing integration on the busbar material, cutting the positioning lug on the insulating film and the like, so that compared with the prior art of respectively hot-pressing the busbar, the laminated busbar has the advantages of reducing labor force, reducing production cost and improving production efficiency.
Description
Technical Field
The invention relates to the technical field of mobile phones, in particular to a structure of a laminated busbar with an insulating film bend and a manufacturing process thereof.
Background
The Laminated Busbar is also called a composite Busbar, a Laminated Busbar, a composite copper bar and is called a multilayered composite structure connecting bar which can be used as an expressway of a power distribution system. The use of composite bus bars provides a modern, easily designed, quickly installed and structurally sound power distribution system, as compared to conventional, bulky, time consuming and cumbersome wiring methods.
The current laminated busbar manufacturing mode needs to place each layer of busbars in a hot-pressing die respectively, hot-presses the busbars, bends the busbars after the hot-pressing is finished, integrates each layer of busbars together after the busbars are bent, and is tedious in whole flow, labor force waste, processing cost and overlong production time, so that improvement is urgently needed.
Disclosure of Invention
The invention aims to provide a structure of a laminated busbar with an insulating film bend and a manufacturing process thereof to solve the problems in the background art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a structure of a laminated bus bar with an insulation film bending comprises a plurality of layers of bus bars and a plurality of insulation films; at least one insulating film is arranged on the busbar; and the plurality of layers of the busbars and the plurality of insulating films are integrated through hot pressing.
Further to the present invention, the bus bar is provided with three layers; the three layers of busbars comprise a first layer of busbars, a second layer of busbars and a third layer of busbars; six insulating films are arranged; the six insulating films include a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, a fifth insulating film, and a sixth insulating film; and the upper part and the lower part of each layer of the busbar are respectively provided with the insulating films.
The invention is further described, a first positioning hole is arranged on the first layer of bus bar; the second layer busbar is provided with an insulating film positioning mechanism; a second positioning hole is formed in the third busbar; and third positioning holes matched with the busbar insulation film positioning mechanism are respectively formed in the first insulation film, the second insulation film, the third insulation film, the fourth insulation film, the fifth insulation film and the sixth insulation film.
Further describing the present invention, the first layer bus bar, the second layer bus bar and the second bus bar are respectively provided with a first terminal; the first layer of bus bar and the second layer of bus bar are also provided with connecting parts; a second terminal is arranged on the connecting part; the first terminal and the busbar are in an L shape; the second terminal and the connecting portion are L-shaped.
For further description of the present invention, the bus bar is made of copper bar or aluminum bar.
A manufacturing process of a laminated busbar with an insulating film bending function comprises the following steps:
s1: preparing an insulating film, isolation paper and three layers of busbar materials, and stamping and electroplating the three layers of busbar materials; bending the terminals of the three layers of busbar materials; cutting the edges of two insulating films according to the installation requirement of the hot-pressing die to form positioning ears; after cutting, cutting the shape and the positioning hole of the insulating film according to the shape and the size of the three-layer bus bar material after stamping;
s2: placing the three layers of busbar materials, the insulating film and the isolation paper on a hot-pressing die, and performing hot-pressing integration;
s3: after the hot pressing technology is integrated, taking out the isolation paper, and bending the terminals of the two layers of busbar materials;
s4: after the terminal is bent, the other layer of busbar material is integrated with the other two layers of busbar materials through cold pressing, and positioning ears on the insulating film are cut off.
Further describing the present invention, in the step S1, stamping equipment is adopted to respectively stamp the first layer of busbar material, the second layer of busbar material, and the third layer of busbar material according to different shapes and sizes of the first layer of busbar material, the second layer of busbar material, and the third layer of busbar material; electroplating the punched busbar material by using electroplating equipment; bending the first terminal and the second terminal on the electroplated busbar material by adopting bending equipment; and cutting the edges of the first insulating film and the sixth insulating film by a cutting device according to the installation requirements of the thermal module, so that positioning ears are formed on the periphery of the edges of the first insulating film and the sixth insulating film.
Further describing the present invention, in the step S2, a sixth insulating film, the third layer of bus bar material, the fifth insulating film, the fourth insulating film, the second layer of bus bar material, the third insulating film, the isolation paper, the second insulating film, the first layer of bus bar material, and the first insulating film are sequentially stacked and placed on a hot-pressing mold, and after hot-pressing, the first layer of bus bar material and the insulating film are hot-pressed and integrated; and the second layer of busbar material, the insulating film and the third layer of busbar material are subjected to hot-pressing integration.
To further describe the present invention, in the step S3, the release paper is taken out, and the connection portions of the first layer of busbar material and the second layer of busbar material are respectively bent by using a bending device.
Further describing the invention, in the step S4, cold pressing equipment and 3M glue are adopted to perform cold pressing integration on the first layer of busbar material and the second layer of busbar material; and after the integration is finished, cutting off the positioning ears by a cutting device.
The invention has the beneficial effects that:
according to the invention, the laminated busbar is manufactured by stamping, electroplating and bending the busbar material, cutting the insulating film, mounting the insulating film, the isolation paper and the busbar material into a hot-pressing die, hot-pressing and integrating the insulating film and the busbar material, bending the connecting part of the busbar material, then cold-pressing and integrating the busbar material, cutting the positioning lug on the insulating film and the like, so that compared with the prior art of respectively hot-pressing the busbar, the labor force is reduced, the production cost is reduced and the production efficiency is improved.
Drawings
Fig. 1 is a flow chart of the overall structure of the laminated busbar of the invention;
FIG. 2 is a structural view of a first insulating film of the present invention;
FIG. 3 is a partial view of C of FIG. 2;
FIG. 4 is a diagram of a first layer bus bar structure according to the present invention;
FIG. 5 is a diagram of a second layer bus bar structure according to the present invention;
FIG. 6 is a partial view of D of FIG. 5;
FIG. 7 is a third layer bus bar structure diagram of the present invention;
FIG. 8 is a partial view of E in FIG. 7;
FIG. 9 is a block diagram of a locating pin on the hot press mold of the present invention;
fig. 10 is a view showing a state where the bus bar, the insulating film and the release paper of the present invention are mounted in a hot press mold;
FIG. 11 is a flow chart of the present invention.
1. A busbar; 11. a first layer of busbars; 111. a first positioning hole; 12. a second layer of busbars; 121. an insulating film positioning mechanism; a1, a fourth positioning hole; 13. a third layer of busbars; 131. a second positioning hole; 2. an insulating film; 21. a first insulating film; 22. a second insulating film; 23. a third insulating film; 24. a fourth insulating film; 25. A fifth insulating film; 26. a sixth insulating film; 27. a third positioning hole; 3. release paper; 4. positioning the ears; 5. a first terminal; 6. a connecting portion; 61. a second terminal; 7. hot pressing the mold; b1, a first alignment pin; b2, a second positioning pin; b3, a third positioning pin; b4 and a fourth positioning pin.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-10, a laminated busbar structure with insulation film bending comprises a plurality of layers of busbars 1 and a plurality of insulation films 2; at least one insulating film 2 is arranged on the busbar 1; the plurality of layers of busbars 1 and the plurality of insulating films 2 are integrated through hot pressing; in the embodiment, the busbar 1 is provided with three layers; the three-layer busbar 1 comprises a first layer busbar 11, a second layer busbar 12 and a third layer busbar 13; six pieces of the insulating film 2 are provided; the six insulating films 2 include a first insulating film 21, a second insulating film 22, a third insulating film 23, a fourth insulating film 24, a fifth insulating film 25, and a sixth insulating film 26; an insulating film 2 is respectively arranged on the upper part and the lower part of each layer of busbar 1; a first positioning hole 111 is formed in the first layer busbar 11; the second layer busbar 12 is provided with an insulating film positioning mechanism 121; a second positioning hole 131 is formed in the third layer of bus bar 13; the bus bar 1 is provided with a positioning hole for better positioning in a hot-pressing die 7 during hot pressing; third positioning holes 27 matched with the insulating film positioning mechanisms 121 are formed in the first insulating film 21, the second insulating film 22, the third insulating film 23, the fourth insulating film 24, the fifth insulating film 25 and the sixth insulating film 26 respectively; the insulating film positioning mechanism 121 and the third positioning hole 27 are arranged, so that the insulating film 2 can be more accurately arranged on the busbar 1 through the matching of the second positioning hole 131 and the insulating film positioning mechanism 121, and the hot pressing precision is higher; the first layer bus bar 11, the second layer bus bar 12 and the second bus bar are respectively provided with a first terminal 5; the first layer busbar 11 and the second layer busbar 12 are also provided with connecting parts 6; the connecting part 6 is provided with a second terminal 61; the first terminal 5 and the busbar 1 are in an L shape; the second terminal 61 and the connection portion 6 are L-shaped; the bus bar 1 adopts a copper bar or an aluminum bar, in the example, the bus bar 1 can adopt the copper bar as required, the conductivity of the copper bar is high, the hardness is good, the aluminum bar can also be adopted, the aluminum bar is light in weight, a layer of copper surface layer can be coated on the surface of the aluminum bar, the conductivity of the laminated bus bar 1 can be improved, the requirement of heavy current can be met, the quality of the laminated bus bar 1 is reduced, and the cost of the laminated bus bar is reduced, in the example, the bus bar 1 adopts the copper bar, the thickness of the copper bar is preferably 1.2mm, but not limited to 1.2mm, the copper bar is a heavy current conductive product, and the copper bar has low resistivity and large bending degree; the three-layer bus bar 1 is suitable for an inverter, because the bus bar 1 is designed into a three-phase alternating current form for electric energy output, the inverter outputs the electric energy in the three-phase alternating current form; the three-phase AC power supply consists of three AC potentials with the same frequency, equal amplitude and phase difference of 120 deg.
A manufacturing process of a laminated busbar with an insulating film bending function comprises the following steps:
as shown in fig. 1 and 11, S1: preparing an insulating film 2, isolation paper 3 and three layers of busbar 1 materials, and stamping and electroplating the three layers of busbar 1 materials; bending the terminals of the three-layer busbar 1 material; cutting the edges of the two insulating films 2 according to the installation requirement of the hot-pressing mold 7 to form positioning ears 4; after cutting, cutting the shape and the size of the insulating film 2 and the positioning hole according to the shape and the size of the three-layer bus bar 1 material after punching; in the step S1, stamping equipment is adopted to stamp the shapes of the first layer of busbar 11 material, the second layer of busbar 12 material and the third layer of busbar 13 material respectively according to the different shapes and sizes of the first layer of busbar 11 material, the second layer of busbar 12 material and the third layer of busbar 13 material; stamping a first positioning hole 111 of a first layer of busbar 11 material and an insulating film positioning mechanism 121 of a second layer of busbar 12 material to form a required shape by stamping; electroplating equipment is adopted to electroplate the female 1 material that arranges that has punched out, arrange 1 and carry out tin-plating or zinc-plating to the mother and handle, in this example, tin-plating or zinc-plating handle can prevent to oxidize in the copper bar, because oxidation blackens or produce verdigris very easily in industry atmosphere, marine climate or moist atmospheric environment, so in order to increase area of contact, reduce the contact resistance of faying surface, strengthen electric conductivity and at copper bar surface tin-plating, the tin coating has better stability in the air, reach permanent atom intercrystalline bonding in various ambient temperature between two kinds of different metal material, and copper layer tin-plating, zinc layer distribution is even.
As shown in fig. 2-11, a first terminal 5 and a second terminal 61 on a material of a busbar 1 after electroplating are bent by a bending device, the bending process is to bend the first terminal 5 on a first layer of busbar 11 material, a second layer of busbar 12 material and a third layer of busbar 13 material, and then bend the second terminal 61, so that the busbar 1 can be connected with an output device through the terminal by bending the terminal, and the complexity of line connection is reduced; according to the installation requirement of the hot-pressing die, the edges of the first insulating film 21 and the sixth insulating film 26 are cut through a cutting device, so that positioning ears 4 are formed on the periphery of the edges of the first insulating film 21 and the sixth insulating film 26, the positioning ears 4 are formed, the first insulating film 21 and the sixth insulating film 26 are placed on the hot-pressing die 7, the accurate positioning can be better realized, and the hot-pressing precision is increased; after the first insulating film 21 and the sixth insulating film 26 are cut to position the ears 4, the shape of the insulating film 2 and the shape and size of the punched first layer busbar 11 material, second layer busbar 12 material and third layer busbar 13 material are cut to the second positioning hole 131 respectively.
As shown in fig. 2-11, in this embodiment, the insulating film is generally formed by bonding glass fiber cloth and epoxy resin, for example, FR4 material (epoxy glass cloth laminated board or epoxy resin board) is commonly used in high-voltage environment or PET material, and the insulating film 2 will provide electrical isolation between multiple units of the busbar 1 in parallel in the horizontal direction and between different busbars 1 in the vertical direction.
As shown in fig. 2 to 10, in the present example, the hot press mold 7 is used, on which a first positioning pin B1, a second positioning pin B2, a third positioning pin B3, and a fourth positioning pin B4 are provided; the first positioning pin B1 is matched with the first positioning hole 111; the insulating film positioning mechanism 121 is provided with a fourth positioning hole A1, and the second positioning hole 131 is matched with the second positioning pin B2; the third positioning pin B3 is matched with the positioning ear 4, and the fourth positioning hole A1 is matched with the fourth positioning pin B4; set up a plurality of locating pins for female arranging 1 and insulating film 2 can be more accurately fixed a position in hot pressing mould 7 when the hot pressing, increase the precision of hot pressing.
As shown in fig. 1 to 11, S2: placing the three-layer busbar 1 material, the insulating film 2 and the isolation paper 3 on a hot-pressing die 7 for hot-pressing integration; in the step S2, sequentially stacking a sixth insulating film 26, a third layer of bus bar 13 material, a fifth insulating film 25, a fourth insulating film 24, a second layer of bus bar 12 material, a third insulating film 23, a piece of separator paper 3, a second insulating film 22, a first layer of bus bar 11 material and a first insulating film 21 on a hot-pressing mold 7 in a stacking manner, wherein in the stacking process, a positioning lug 4 and a positioning hole are respectively matched with a positioning pin on the hot-pressing mold 7, and after hot pressing, the first insulating film 21 and the second insulating film 22 are respectively adhered to the surface of the first layer of bus bar 11 material by a hot-pressing technology; the third insulating film 23 and the fourth insulating film 24 are respectively adhered to the surface of the second layer of busbar 12 material through a hot pressing technology; the fifth insulating film 25 and the sixth insulating film 26 are respectively adhered to the surface of the third layer bus bar 13 material through a hot pressing technology, meanwhile, the second layer bus bar 12 material adhered with the insulating film 2 and the third layer bus bar 13 material adhered with the insulating film 2 are also integrated together through hot pressing, and the first layer bus bar 11 material adhered with the insulating film 2 and the second layer bus bar 12 material adhered with the insulating film 2 are not integrated together through hot pressing because the isolating paper 3 is arranged between the first layer bus bar 11 material adhered with the insulating film 2 and the second layer bus bar 12 material adhered with the insulating film 2; in the manufacturing process, the multilayer busbar is subjected to hot-pressing integration simultaneously, so that the processing efficiency is increased, and the processing cost is reduced.
As shown in fig. 2 to 11, S3: after the hot pressing technology is integrated, taking out the isolation paper 3, and bending the terminals of the two layers of the busbar 1 materials; in the step S3, after hot pressing, the separation paper 3 between the first layer of busbar 11 material and the second layer of busbar 12 material is taken out, and the connection portions 6 of the first layer of busbar 11 material and the second layer of busbar 12 material are respectively bent by using a bending device; in this example, set up barrier paper 3 in female row 11 material of first layer and the female 12 materials of second layer, because two-layer material is different, if the integration is bent connecting portion 6 again and can lead to the female 6 angle increase of bending of connecting portion that arranges 11 of first layer, make female 1 of arranging tensile too big of bending, influence the female structure of arranging of stromatolite, set up barrier paper 3, can make female 12 materials of arranging 11 materials of first layer and second layer can both be better bending, thereby can not influence the female structure of arranging of stromatolite.
As shown in fig. 2 to 11, S4: after the terminal is bent, integrating another layer of bus bar 1 material with the other two layers of bus bar 1 materials through cold pressing, and cutting off the positioning ears 4 on the insulating film 2; in the step S4, since the first layer of busbar 11 material and the second layer of busbar 12 material cannot be hot pressed at the same time during hot pressing, cold pressing equipment and 3M glue are adopted to perform cold pressing integration on the first layer of busbar 11 material and the second layer of busbar 12 material after the connecting portion 6 is bent, and the first layer of busbar 11 material, the second layer of busbar 12 material and the third layer of busbar 13 are integrated together to form a laminated busbar after the integration is completed; after the integration is completed, the positioning ears 4 on the integrated insulating film 2 are cut by a cutting device.
Compared with the prior art, the laminated busbar is manufactured by stamping, electroplating and bending the busbar 1 material, cutting the insulating film 2, installing the insulating film 2, the isolation paper 3 and the busbar 1 material into a hot-pressing die 7, hot-pressing and integrating the insulating film 2 and the busbar 1 material, bending the busbar 1 material connecting part 6, then cold-pressing and integrating the busbar 1 material, cutting the positioning ear 4 on the insulating film 2 and the like, so that compared with the prior art of respectively hot-pressing the busbar 1, the laminated busbar has the advantages of reducing labor force, reducing production cost and improving production efficiency.
The above description is not intended to limit the technical scope of the present invention, and any modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are still within the scope of the present invention.
Claims (10)
1. The utility model provides a take female structure of arranging of range upon range of bending of insulating film which characterized in that: comprises a plurality of layers of busbars and a plurality of insulating films; at least one insulating film is arranged on the busbar; and the plurality of layers of the busbars and the plurality of insulating films are integrated through hot pressing.
2. The structure of the laminated busbar with the insulation film bend according to claim 1, wherein: the bus bar is provided with three layers; the three layers of busbars comprise a first layer of busbars, a second layer of busbars and a third layer of busbars; six insulating films are arranged; the six insulating films include a first insulating film, a second insulating film, a third insulating film, a fourth insulating film, a fifth insulating film, and a sixth insulating film; and the upper part and the lower part of each layer of the busbar are respectively provided with the insulating films.
3. The structure of the laminated busbar with the insulation film bend according to claim 2, wherein: the first layer of bus bars are provided with first positioning holes; the second layer busbar is provided with an insulating film positioning mechanism; a second positioning hole is formed in the third busbar; and third positioning holes matched with the busbar insulation film positioning mechanism are respectively formed in the first insulation film, the second insulation film, the third insulation film, the fourth insulation film, the fifth insulation film and the sixth insulation film.
4. The structure of the laminated busbar with the insulation film bend according to claim 3, wherein: the first layer bus bar, the second layer bus bar and the second bus bar are respectively provided with a first terminal; the first layer of bus bar and the second layer of bus bar are also provided with connecting parts; a second terminal is arranged on the connecting part; the first terminal and the busbar are in an L shape; the second terminal and the connecting portion are L-shaped.
5. The structure of the laminated busbar with the insulation film bend according to claim 1, wherein: the busbar adopts a copper bar or an aluminum bar.
6. The manufacturing process of the laminated busbar with the insulation film bend according to claim 4, characterized in that: the method comprises the following steps:
s1: preparing an insulating film, isolation paper and three layers of busbar materials, and stamping and electroplating the three layers of busbar materials; bending the terminals of the three layers of busbar materials; cutting the edges of two insulating films according to the installation requirement of the hot-pressing die to form positioning ears; after cutting, cutting the shape and the positioning hole of the insulating film according to the shape and the size of the three-layer bus bar material after stamping;
s2: placing the three layers of busbar materials, the insulating film and the isolation paper on a hot-pressing die, and performing hot-pressing integration;
s3: after the hot pressing technology is integrated, taking out the isolation paper, and bending the terminals of the two layers of busbar materials;
s4: after the terminal is bent, the other layer of busbar material is integrated with the other two layers of busbar materials through cold pressing, and positioning ears on the insulating film are cut off.
7. The manufacturing process of the laminated busbar with the insulation film bend according to claim 6, characterized in that: in the step S1, stamping equipment is adopted to respectively stamp the first layer of busbar material, the second layer of busbar material and the third layer of busbar material according to different shapes and sizes of the first layer of busbar material, the second layer of busbar material and the third layer of busbar material; electroplating the punched busbar material by using electroplating equipment; bending the first terminal and the second terminal on the electroplated busbar material by adopting bending equipment; and cutting the edges of the first insulating film and the sixth insulating film by a cutting device according to the installation requirements of the thermal module, so that positioning ears are formed on the periphery of the edges of the first insulating film and the sixth insulating film.
8. The process for manufacturing the laminated busbar with the bent insulating film according to claim 7, wherein the process comprises the following steps: in the step S2, sequentially stacking a sixth insulating film, the third layer of bus bar material, the fifth insulating film, the fourth insulating film, the second layer of bus bar material, the third insulating film, the isolation paper, the second insulating film, the first layer of bus bar material, and the first insulating film on a hot-pressing mold, and after hot pressing, hot-pressing and integrating the first layer of bus bar material and the insulating film; and the second layer of busbar material, the insulating film and the third layer of busbar material are subjected to hot-pressing integration.
9. The manufacturing process of the laminated busbar with the insulation film bend according to claim 6, characterized in that: and in the step S3, taking out the isolation paper, and respectively bending the connecting parts of the first layer of busbar material and the second layer of busbar material by adopting bending equipment.
10. The process for manufacturing the laminated busbar with the bent insulating film according to claim 7, wherein the process comprises the following steps: in the step S4, cold pressing equipment and 3M glue are used to perform cold pressing integration on the first layer of busbar material and the second layer of busbar material; and after the integration is finished, cutting off the positioning ears by a cutting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111526453.4A CN114204362A (en) | 2021-12-14 | 2021-12-14 | Structure of laminated busbar with insulation film bending and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111526453.4A CN114204362A (en) | 2021-12-14 | 2021-12-14 | Structure of laminated busbar with insulation film bending and manufacturing process thereof |
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| Publication Number | Publication Date |
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| CN114204362A true CN114204362A (en) | 2022-03-18 |
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| CN202111526453.4A Pending CN114204362A (en) | 2021-12-14 | 2021-12-14 | Structure of laminated busbar with insulation film bending and manufacturing process thereof |
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