CN110391624A - The low sense composite bus bar of copper-base graphite alkene and its manufacturing method - Google Patents
The low sense composite bus bar of copper-base graphite alkene and its manufacturing method Download PDFInfo
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- CN110391624A CN110391624A CN201810340696.0A CN201810340696A CN110391624A CN 110391624 A CN110391624 A CN 110391624A CN 201810340696 A CN201810340696 A CN 201810340696A CN 110391624 A CN110391624 A CN 110391624A
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- copper
- face
- graphite alkene
- graphene film
- base graphite
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/005—Laminated bus-bars
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- Carbon And Carbon Compounds (AREA)
- Non-Insulated Conductors (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of low sense composite bus bar of copper-base graphite alkene and its manufacturing methods.The low sense composite bus bar of the copper-base graphite alkene includes: copper-base graphite alkene composite conductor layer；It is set to first insulating layer in the first face of the first graphene film of the copper-base graphite alkene composite conductor layer；And it is set to the second insulating layer in the second face of the second graphene film of the copper-base graphite alkene composite conductor layer.Wherein, which includes: copper sheet；It is set to first graphene film in the first face of the copper sheet；And it is set to second graphene film in the second face of the copper sheet, first face is oppositely arranged with second face.Since the low sense composite bus bar of copper-base graphite alkene of the invention uses copper-base graphite alkene composite conductor layer as conductor layer, the temperature rise of low sense composite bus bar, the parasitic inductance for reducing low sense composite bus bar can be effectively reduced, and the switching frequency of IGBT is further promoted, the light weight degree of low sense composite bus bar significantly improves.
Description
Technical field
The present invention relates to a kind of low sense composite bus bar more particularly to a kind of low sense composite bus bar of copper-base graphite alkene and its manufactures
Method.
Background technique
Low sense composite bus bar is used as integrating the bus of various devices in the power electronics circuit of relatively high power, because it is parallel
Mutual inductance between route is very low and gains the name.In the circuit that low sense composite bus bar requires commonly used in highly integrated, low inductance, at present extensively
Applied in the current transformer in the fields such as rail traffic, wind-powered electricity generation photovoltaic, communication, inverter, generally as insulated gate bipolar crystal
Manage the electrical connection of (IGBT) between module and capacitor.
However, low sense composite bus bar structure bulky in the prior art, and under high current, the operating condition of high frequency, its own
Resistance heating amount is high, so that parasitic inductance is difficult to further decrease, is unable to satisfy hyperfrequency application.
Accordingly, it is desirable to provide a kind of low sense composite bus bar that can reduce parasitic inductance.
Summary of the invention
The technical problems to be solved by the present invention are: low sense composite bus bar structure bulky in the prior art, and in big electricity
It flows, under the operating condition of high frequency, its own resistance heating amount is high, so that parasitic inductance is difficult to further decrease, is unable to satisfy hyperfrequency
Application.
In order to solve the above technical problem, the present invention provides a kind of low sense composite bus bar of copper-base graphite alkene and its manufacturers
Method.
According to an aspect of the present invention, a kind of copper-base graphite alkene composite conductor layer is provided, low sense composite bus bar is applied to,
Comprising:
Copper sheet；
It is set to first graphene film in the first face of the copper sheet；And
It is set to second graphene film in the second face of the copper sheet, first face is opposite with second face to be set
It sets.
In a preferred embodiment, first graphene film is compound in the copper sheet by conductive adhesive
The first face；And/or
Second graphene film is compound in the second face of the copper sheet by conductive adhesive.
In a preferred embodiment, the compound mode is to paste, coat and one of leaching is covered.
In a preferred embodiment, the thickness ratio of first graphene film and the copper sheet is 0.1:100
~100:0.1；And/or
The thickness ratio of second graphene film and the copper sheet is 0.1:100~100:0.1.
According to another aspect of the present invention, a kind of method for manufacturing copper-base graphite alkene composite conductor layer, the copper are provided
Base graphene composite conductor layer is applied to low sense composite bus bar, which comprises
Copper sheet is provided；
The first graphene film is formed on the first face of the copper sheet；And
The second graphene film is formed on the second face of the copper sheet, first face is opposite with second face to be set
It sets.
In a preferred embodiment, described first is formed on the first face of the copper sheet using conductive adhesive
Graphene film；And/or
Second graphene film is formed on the second face of the copper sheet using conductive adhesive.
In a preferred embodiment, the method also includes: the copper sheet is surface-treated, so that in institute
It states and forms protective coating on the first face and/or second face.
In a preferred embodiment, the protective coating is anti-oxidant coating and anti-corrosion coating.
In accordance with a further aspect of the present invention, provide a kind of copper-base graphite alkene low sense composite bus bar comprising:
Copper-base graphite alkene composite conductor layer as described above；
It is set to first insulating layer in the first face of the first graphene film of the copper-base graphite alkene composite conductor layer；With
And
It is set to the second insulating layer in the second face of the second graphene film of the copper-base graphite alkene composite conductor layer.
In a preferred embodiment, the first face of first graphene film is compound in described by adhesive layer
Second face of the first insulating layer；And/or
Second face of second graphene film is compound in the first face of the second insulating layer by adhesive layer.
Compared with prior art, one or more embodiments in above scheme can have following advantage or beneficial to effect
Fruit:
Using the low sense composite bus bar of copper-base graphite alkene provided in an embodiment of the present invention, since it is compound using copper-base graphite alkene
For conductor layer as conductor layer, which has the advantages that low resistivity, rapid heat dissipation, unit cross-sectional area carrying current capacity are strong,
And then the current carrying capacity of low sense composite bus bar can be improved, it reduces the temperature rise of low sense composite bus bar, reduce the low compound mother of sense
The parasitic inductance of row effectively increases the reliability of unsteady flow component and meets application apparatus EMC Requirements.Also, due to
It uses the composite bus bar of low inductance can be with the higher IGBT of application switch frequency, therefore can further promote the switch frequency of IGBT
Rate to keep the structure of entire current transformer simple, and makes the light weight of low sense composite bus bar so that the transformer in current transformer is smaller
Change degree significantly improves.
Further, since the thickness of copper-base graphite alkene composite conductor layer reduces, so that the thickness of entire low sense composite bus bar is bright
Aobvious to reduce, so that the volume of low sense composite bus bar reduces, overall weight is reduced, and can be effectively improved the light weight of application apparatus
The problem of change, high power density.
Other features and advantages of the present invention will be illustrated in the following description, and partly becomes from specification
It is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by wanting in specification, right
Specifically noted structure is sought in book and attached drawing to be achieved and obtained.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the sectional view of the copper-base graphite alkene composite conductor layer of the embodiment of the present invention；
Fig. 2 is the flow chart of the method for manufacturing copper-base graphite alkene composite conductor layer of the embodiment of the present invention；
Fig. 3 is the sectional view of the low sense composite bus bar of the copper-base graphite alkene of the embodiment of the present invention；
Fig. 4 is the low sense composite bus bar of multiple copper-base graphite alkene of embodiment of the present invention decomposition diagram stacked together；
Fig. 5 is the schematic diagram of the manufacturing method of the low sense composite bus bar of the copper-base graphite alkene of the embodiment of the present invention；
Fig. 6 is the temperature-time curve and pressure-time curve of the embodiment of the present invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
To solve low sense composite bus bar structure bulky in the prior art, and under high current, the operating condition of high frequency, its own
Resistance heating amount is high, so that parasitic inductance is difficult to further decrease, the technical issues of being unable to satisfy hyperfrequency application, and this hair
Bright embodiment provides a kind of low sense composite bus bar of copper-base graphite alkene and its manufacturing method.
Due to the innovation of the invention consists in that copper-base graphite alkene composite conductor layer is applied to low sense composite bus bar, lower kept man of a noblewoman
It is described in detail referring initially to copper-base graphite alkene composite conductor layer of the Fig. 1 to the embodiment of the present invention.
Fig. 1 is the sectional view of the copper-base graphite alkene composite conductor layer of the embodiment of the present invention.
As shown in Figure 1, the copper-base graphite alkene composite conductor layer of the embodiment of the present invention specifically includes that copper sheet 101；It is set to copper
First graphene film 102 in the first face of plate 101；And it is set to second graphene film in the second face of copper sheet 101
103.What needs to be explained here is that the first face of copper sheet 101 is preferably the upper surface of copper sheet 101, the second face of copper sheet 101 is preferred
For the lower surface of copper sheet 101.Certainly, the present embodiment is not restricted to this, graphene can also be arranged in other faces of copper sheet 101
Film.
In an embodiment of the present invention, the first graphene film 102 is compound in the first of copper sheet 101 by conductive adhesive
Face, the second graphene film 103 are compound in the second face of copper sheet 101 by conductive adhesive.
Preferably, compound mode is to paste, coat and one of leaching is covered.
Preferably, the thickness ratio of the first graphene film 102 and copper sheet 101 is 0.1:100~100:0.1, the second graphite
The thickness ratio of alkene film 103 and copper sheet 101 is 0.1:100~100:0.1.So set, so as to being made of graphene film
The characteristics such as conductive, thermally conductive are better achieved in copper-base graphite alkene composite conductor layer.
Using copper-base graphite alkene composite conductor layer provided in an embodiment of the present invention, due to graphene have excellent conductive rate and
Thermal conductivity, so that the copper-base graphite alkene composite conductor layer being made of graphene film has, resistivity is low, rapid heat dissipation, unit section
The strong advantage of product carrying current capacity.
In addition, copper sheet has current-carrying capability, current-carrying capacity 3-5A/mm2, and graphene film is compound in copper sheet
Upper and lower surfaces allow the graphene film with excellent conductive rate to share the current-carrying of copper sheet.Therefore, in same electric current work
Under condition, the thickness of required copper sheet can be substantially reduced.Again since graphene is that presently found most thin, intensity is newer than maximum
Type nano material so that the thickness for the copper-base graphite alkene composite conductor layer being made of graphene film is substantially reduced, and is easy into
Type.
Then, it is carried out with reference to method for manufacture copper-base graphite alkene composite conductor layer of the Fig. 2 to the embodiment of the present invention detailed
Thin description.
As shown in Fig. 2, the method for manufacturing copper-base graphite alkene composite conductor layer of the embodiment of the present invention, mainly include with
Lower step S101 to step S103.
In step s101, copper sheet 101 is provided.
Specifically, firstly, copper sheet 101 is machined into required profile, and deburring, greasy dirt, metallic dust.Then,
Copper sheet 101 is further processed so that copper sheet include polarity connecting pin 41, for opposed polarity interface pass through need and
The fabrication hole or technology groove 42 of setting and the screw hole being arranged for being equipped with screw 43, nut 44 etc., here, screw 43, spiral shell
Mother 44 etc. is to need and be arranged for composite conductor layer external interface itself.Next, the copper sheet 101 after processing is carried out surface
Processing, to form protective coating on its first face and the second face.Preferably, which is anti-oxidant coating and anticorrosive
Coating.Finally, being machined as needed to the polarity connecting pin 41 of copper sheet 101, for example, riveting, welding, bending etc..
What needs to be explained here is that the first face of copper sheet 101 is preferably the upper surface of copper sheet 101, the second face of copper sheet 101 is preferably copper
The lower surface of plate 101.Certainly, the present embodiment is not restricted to this, can also form protective coating in other faces of copper sheet 101.
In step s 102, the first graphene film 102 is formed on the first face of copper sheet 101.
Specifically, firstly, the first graphene film 102 is processed into required shape.Secondly, will be added using conductive adhesive
The first graphene film 102 after work is compound on the first face of copper sheet 101.Here preferably, compound mode is to paste, apply
It covers and one of leaching is covered.It is highly preferred that the thickness ratio of the first graphene film 102 and copper sheet 101 is 0.1:100~100:
0.1, so that the characteristics such as conductive, thermally conductive are better achieved in the copper-base graphite alkene composite conductor layer being made of graphene film.
In step s 103, the second graphene film 103 is formed on the second face of copper sheet 101.It specifically, firstly, will
Second graphene film 103 is processed into required shape.Secondly, using conductive adhesive by the second graphene film after processing
103 are compound on the second face of copper sheet 101.Preferably, compound mode is to paste, coat and one of leaching is covered.More preferably
The thickness ratio on ground, the second graphene film 103 and copper sheet 101 is 0.1:100~100:0.1, so as to be made of graphene film
Copper-base graphite alkene composite conductor layer the characteristics such as conductive, thermally conductive are better achieved.
What needs to be explained here is that the first face of copper sheet 101 is preferably the upper surface of copper sheet 101, the second face of copper sheet 101
The preferably lower surface of copper sheet 101.Certainly, the present embodiment is not restricted to this, stone can also be arranged in other faces of copper sheet 101
Black alkene film.
Based on this, the copper-base graphite alkene composite conductor layer of the embodiment of the present invention can be formed.
Using the method provided in an embodiment of the present invention for manufacturing copper-base graphite alkene composite conductor layer, due to manufacturing plant
Simply, therefore using existing manufacturing equipment the processing of copper-base graphite alkene composite conductor layer can be completed, to be conducive to advise greatly
Mould consecutive production.
Then, it is described in detail with reference to the structure of the low sense composite bus bar of copper-base graphite alkene of the Fig. 3 to the embodiment of the present invention.
As shown in figure 3, the low sense composite bus bar of the copper-base graphite alkene of the embodiment of the present invention, specifically includes that above-mentioned copper-base graphite
Alkene composite conductor layer, the first insulating layer 104, second insulating layer 105, the first adhesive layer 106 and the second adhesive layer 107.Wherein,
One insulating layer 104 is set to the first face of the first graphene film 102 of copper-base graphite alkene composite conductor layer, second insulating layer
105 are set to the second face of the second graphene film 103 of copper-base graphite alkene composite conductor layer.What needs to be explained here is that the
First face of one graphene film 102 is preferably the upper surface of the first graphene film 102, and the of the first graphene film 102
Two faces are preferably the lower surface of the first graphene film 102.First face of the second graphene film 103 is preferably the second graphene
The upper surface of film 103, the second face of the second graphene film 103 are preferably the lower surface of the second graphene film 103.When
So, the present embodiment is not restricted to this.
In an embodiment of the present invention, the first face of the first graphene film 102 is compound in the by the first adhesive layer 106
Second face in the second face of one insulating layer 104, the second graphene film 103 is compound in the second insulation by the second adhesive layer 107
First face of layer 105.What needs to be explained here is that the first face of the first insulating layer 104 is preferably the upper table of the first insulating layer 104
Face, the second face of the first insulating layer 104 are preferably the lower surface of the first insulating layer 104.First face of second insulating layer 105 is preferred
For the upper surface of second insulating layer 105, the second face of second insulating layer 105 is preferably the lower surface of second insulating layer 105.When
So, the present embodiment is not restricted to this.
Preferably, the first insulating layer 104 and second insulating layer 105 are laminate polyester, epoxy resin insulation board, poly- carbonic acid
One of ester plate, GPO-3 laminate and aramid insulative paper.First insulating layer 104 and second insulating layer 105 can phases
Together, it can also be different.
Preferably, the first adhesive layer 106 and the second adhesive layer 107 are prepreg, acrylic acid glue film and the pure glue film of polyester
One of.First adhesive layer 106 and the second adhesive layer 107 may be the same or different.
Using the low sense composite bus bar of copper-base graphite alkene provided in an embodiment of the present invention, since it is compound using copper-base graphite alkene
For conductor layer as conductor layer, which has the advantages that low resistivity, rapid heat dissipation, unit cross-sectional area carrying current capacity are strong,
And then the current carrying capacity of low sense composite bus bar can be improved, it reduces the temperature rise of low sense composite bus bar, reduce the low compound mother of sense
The parasitic inductance of row effectively increases the reliability of unsteady flow component and meets application apparatus EMC Requirements.Also, due to
It uses the composite bus bar of low inductance can be with the higher IGBT of application switch frequency, therefore can further promote the switch frequency of IGBT
Rate to keep the structure of entire current transformer simple, and makes the light weight of low sense composite bus bar so that the transformer in current transformer is smaller
Change degree significantly improves.
Further, since the thickness of copper-base graphite alkene composite conductor layer reduces, so that the thickness of entire low sense composite bus bar is bright
Aobvious to reduce, so that the volume of low sense composite bus bar reduces, overall weight is reduced, and can be effectively improved the light weight of application apparatus
The problem of change, high power density.
Finally, the manufacturing method of sense composite bus bar low to the copper-base graphite alkene of the embodiment of the present invention is described in detail.
Firstly, manufacturing copper-base graphite alkene composite conductor layer according to above-mentioned steps S101 to step S103.
Secondly, the first insulating layer 104, second insulating layer 105, the first adhesive layer 106 and the second adhesive layer 107 are added respectively
Work is dried, dedusting at required shape.
Then, successively by after processing second insulating layer 105, the second adhesive layer 107, copper-base graphite alkene composite conductor layer,
First adhesive layer 106 and the first insulating layer 104 are placed in the lower template 52 of positioning pressing mold, and using in lower template 52
It is fixed in multiple positioning pins 521, covers cope plate 51, and will position pressing mold be put into the top board 53 of press machine with
Between lower platen 54.
It then, will by top board 53 and lower platen 54 according to temperature-time curve shown in fig. 6 (indicated by the solid line)
Positioning pressing mold is heated to predetermined temperature and is kept for the first predetermined time.Meanwhile according to pressure-time curve shown in fig. 6
(being represented by dashed line) applies predetermined pressure by the upper and lower surfaces of 55 pairs of pressure cylinder positioning pressing molds of press machine and keeps
Second predetermined time.In this way, it is multiple to make to position the second insulating layer 105 in pressing mold, the second adhesive layer 107, copper-base graphite alkene
Conductor layer, the first adhesive layer 106, the first insulating layer 104 is closed to be bonded as one.What needs to be explained here is that in the present embodiment,
Top board 53 can generate heat with lower platen 54.However, the present invention is not limited thereto, can also be by top board 53 and lower platen 54
High-temp liquid medium is connected with to realize the fever to top board 53 and lower platen 54.
Preferably, predetermined temperature is 135 DEG C~500 DEG C, and the first predetermined time was 10min~120min.Predetermined pressure is
0.01MPa·cm2~10MPacm2, the second predetermined time was 10min~120min.
Then, to press machine decrease temperature and pressure, and the second insulating layer being bonded as one is taken out out of positioning pressing mold
105, the second adhesive layer 107, copper-base graphite alkene composite conductor layer, the first adhesive layer 106, the first insulating layer 104.
Finally, to the not polarity connecting pin 41 compound with the first insulating layer 104 and second insulating layer 105 of copper sheet 101 into
Row machining, for example, riveting, bending and molding etc., can form the low sense composite bus bar of copper-base graphite alkene of the embodiment of the present invention.
What needs to be explained here is that according to the architectural difference of different low sense composite bus bars, some low sense composite bus bars are needed before pressing
It is machined (for example, riveting, bending and molding etc.), and some low sense composite bus bar needs are machined after pressing
(for example, riveting, bending and molding etc.).
Using the manufacturing method of the low sense composite bus bar of copper-base graphite alkene provided in an embodiment of the present invention, due to manufacturing plant's letter
It is single, therefore the low processing for feeling composite bus bar of copper-base graphite alkene can be completed using existing manufacturing equipment, to be conducive to advise greatly
Mould consecutive production.
It should be noted that above-described embodiment is merely illustrative embodiment, it is not intended to restrict the invention.For example, at it
In his embodiment, the first insulating layer 104 and second insulating layer 105 can be made of one of above-mentioned material or multiple material,
First adhesive layer 106 and the second adhesive layer 107 can also be made of one of above-mentioned material or multiple material.
In addition, in other embodiments, any other conductor apart from copper also can be used as in composite conductor layer
Substrate, and can be used cold pressing mode come realize it is above-mentioned it is low sense composite bus bar each layer between bonding forming.
While it is disclosed that embodiment content as above but described only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But protection scope of the present invention still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of copper-base graphite alkene composite conductor layer, which is characterized in that it is applied to low sense composite bus bar comprising:
Copper sheet；
It is set to first graphene film in the first face of the copper sheet；And
It is set to second graphene film in the second face of the copper sheet, first face is oppositely arranged with second face.
2. copper-base graphite alkene composite conductor layer according to claim 1, which is characterized in that
First graphene film is compound in the first face of the copper sheet by conductive adhesive；And/or
Second graphene film is compound in the second face of the copper sheet by conductive adhesive.
3. copper-base graphite alkene composite conductor layer according to claim 2, which is characterized in that the compound mode is patch
It covers, coat and one of leaching is covered.
4. copper-base graphite alkene composite conductor layer according to any one of claim 1 to 3, which is characterized in that
The thickness ratio of first graphene film and the copper sheet is 0.1:100~100:0.1；And/or
The thickness ratio of second graphene film and the copper sheet is 0.1:100~100:0.1.
5. a kind of method for manufacturing copper-base graphite alkene composite conductor layer, which is characterized in that the copper-base graphite alkene composite conductor
Layer is applied to low sense composite bus bar, which comprises
Copper sheet is provided；
The first graphene film is formed on the first face of the copper sheet；And
The second graphene film is formed on the second face of the copper sheet, first face is oppositely arranged with second face.
6. according to the method described in claim 5, it is characterized in that,
First graphene film is formed on the first face of the copper sheet using conductive adhesive；And/or
Second graphene film is formed on the second face of the copper sheet using conductive adhesive.
7. method according to claim 5 or 6, which is characterized in that the method also includes: surface is carried out to the copper sheet
Processing, so as to form protective coating on first face and/or second face.
8. the method according to the description of claim 7 is characterized in that the protective coating is anti-oxidant coating and anticorrosive plating
Layer.
9. a kind of low sense composite bus bar of copper-base graphite alkene characterized by comprising
Copper-base graphite alkene composite conductor layer according to any one of claims 1 to 4；
It is set to first insulating layer in the first face of the first graphene film of the copper-base graphite alkene composite conductor layer；And
It is set to the second insulating layer in the second face of the second graphene film of the copper-base graphite alkene composite conductor layer.
10. the low sense composite bus bar of copper-base graphite alkene according to claim 9, which is characterized in that
First face of first graphene film is compound in the second face of first insulating layer by adhesive layer；And/or
Second face of second graphene film is compound in the first face of the second insulating layer by adhesive layer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708668A (en) * | 2021-09-27 | 2021-11-26 | 中车青岛四方车辆研究所有限公司 | Discrete IGBT parallel power assembly and dual-motor driving system |
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Application publication date: 20191029 |